Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1 | /* libFLAC - Free Lossless Audio Codec library |
Josh Coalson | 9564390 | 2004-01-17 04:14:43 +0000 | [diff] [blame] | 2 | * Copyright (C) 2001,2002,2003,2004 Josh Coalson |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 3 | * |
Josh Coalson | afd8107 | 2003-01-31 23:34:56 +0000 | [diff] [blame] | 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions |
| 6 | * are met: |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 7 | * |
Josh Coalson | afd8107 | 2003-01-31 23:34:56 +0000 | [diff] [blame] | 8 | * - Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 10 | * |
Josh Coalson | afd8107 | 2003-01-31 23:34:56 +0000 | [diff] [blame] | 11 | * - Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * |
| 15 | * - Neither the name of the Xiph.org Foundation nor the names of its |
| 16 | * contributors may be used to endorse or promote products derived from |
| 17 | * this software without specific prior written permission. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
| 23 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 24 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 25 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 26 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 27 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 28 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 29 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 30 | */ |
| 31 | |
| 32 | #include <errno.h> |
| 33 | #include <stdio.h> |
| 34 | #include <stdlib.h> |
| 35 | #include <string.h> |
| 36 | |
| 37 | #if defined _MSC_VER || defined __MINGW32__ |
| 38 | #include <sys/utime.h> /* for utime() */ |
| 39 | #include <io.h> /* for chmod() */ |
| 40 | #else |
| 41 | #include <sys/types.h> /* some flavors of BSD (like OS X) require this to get time_t */ |
| 42 | #include <utime.h> /* for utime() */ |
| 43 | #include <unistd.h> /* for chown(), unlink() */ |
| 44 | #endif |
| 45 | #include <sys/stat.h> /* for stat(), maybe chmod() */ |
| 46 | |
Josh Coalson | 90ced91 | 2002-05-30 05:23:38 +0000 | [diff] [blame] | 47 | #include "private/metadata.h" |
| 48 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 49 | #include "FLAC/assert.h" |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 50 | #include "FLAC/file_decoder.h" |
| 51 | |
| 52 | #ifdef max |
| 53 | #undef max |
| 54 | #endif |
| 55 | #define max(a,b) ((a)>(b)?(a):(b)) |
| 56 | #ifdef min |
| 57 | #undef min |
| 58 | #endif |
| 59 | #define min(a,b) ((a)<(b)?(a):(b)) |
| 60 | |
| 61 | |
| 62 | /**************************************************************************** |
| 63 | * |
| 64 | * Local function declarations |
| 65 | * |
| 66 | ***************************************************************************/ |
| 67 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 68 | static void pack_uint32_(FLAC__uint32 val, FLAC__byte *b, unsigned bytes); |
| 69 | static void pack_uint32_little_endian_(FLAC__uint32 val, FLAC__byte *b, unsigned bytes); |
| 70 | static void pack_uint64_(FLAC__uint64 val, FLAC__byte *b, unsigned bytes); |
| 71 | static FLAC__uint32 unpack_uint32_(FLAC__byte *b, unsigned bytes); |
| 72 | static FLAC__uint32 unpack_uint32_little_endian_(FLAC__byte *b, unsigned bytes); |
| 73 | static FLAC__uint64 unpack_uint64_(FLAC__byte *b, unsigned bytes); |
| 74 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 75 | static FLAC__bool read_metadata_block_header_(FLAC__Metadata_SimpleIterator *iterator); |
| 76 | static FLAC__bool read_metadata_block_data_(FLAC__Metadata_SimpleIterator *iterator, FLAC__StreamMetadata *block); |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 77 | static FLAC__bool read_metadata_block_header_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__bool *is_last, FLAC__MetadataType *type, unsigned *length); |
| 78 | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOCallback_Seek seek_cb, FLAC__StreamMetadata *block); |
| 79 | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_streaminfo_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_StreamInfo *block); |
| 80 | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_padding_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Seek seek_cb, FLAC__StreamMetadata_Padding *block, unsigned block_length); |
| 81 | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_application_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_Application *block, unsigned block_length); |
| 82 | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_seektable_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_SeekTable *block, unsigned block_length); |
| 83 | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_vorbis_comment_entry_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_VorbisComment_Entry *entry); |
| 84 | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_vorbis_comment_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_VorbisComment *block); |
| 85 | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_cuesheet_track_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_CueSheet_Track *track); |
| 86 | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_cuesheet_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_CueSheet *block); |
| 87 | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_unknown_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_Unknown *block, unsigned block_length); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 88 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 89 | static FLAC__bool write_metadata_block_header_(FILE *file, FLAC__Metadata_SimpleIteratorStatus *status, const FLAC__StreamMetadata *block); |
| 90 | static FLAC__bool write_metadata_block_data_(FILE *file, FLAC__Metadata_SimpleIteratorStatus *status, const FLAC__StreamMetadata *block); |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 91 | static FLAC__bool write_metadata_block_header_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata *block); |
| 92 | static FLAC__bool write_metadata_block_data_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata *block); |
| 93 | static FLAC__bool write_metadata_block_data_streaminfo_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_StreamInfo *block); |
| 94 | static FLAC__bool write_metadata_block_data_padding_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_Padding *block, unsigned block_length); |
| 95 | static FLAC__bool write_metadata_block_data_application_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_Application *block, unsigned block_length); |
| 96 | static FLAC__bool write_metadata_block_data_seektable_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_SeekTable *block); |
| 97 | static FLAC__bool write_metadata_block_data_vorbis_comment_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_VorbisComment *block); |
| 98 | static FLAC__bool write_metadata_block_data_cuesheet_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_CueSheet *block); |
| 99 | static FLAC__bool write_metadata_block_data_unknown_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_Unknown *block, unsigned block_length); |
| 100 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 101 | static FLAC__bool write_metadata_block_stationary_(FLAC__Metadata_SimpleIterator *iterator, const FLAC__StreamMetadata *block); |
| 102 | static FLAC__bool write_metadata_block_stationary_with_padding_(FLAC__Metadata_SimpleIterator *iterator, FLAC__StreamMetadata *block, unsigned padding_length, FLAC__bool padding_is_last); |
| 103 | static FLAC__bool rewrite_whole_file_(FLAC__Metadata_SimpleIterator *iterator, FLAC__StreamMetadata *block, FLAC__bool append); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 104 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 105 | static void simple_iterator_push_(FLAC__Metadata_SimpleIterator *iterator); |
| 106 | static FLAC__bool simple_iterator_pop_(FLAC__Metadata_SimpleIterator *iterator); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 107 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 108 | static unsigned seek_to_first_metadata_block_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOCallback_Seek seek_cb); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 109 | static unsigned seek_to_first_metadata_block_(FILE *f); |
| 110 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 111 | static FLAC__bool simple_iterator_copy_file_prefix_(FLAC__Metadata_SimpleIterator *iterator, FILE **tempfile, char **tempfilename, FLAC__bool append); |
| 112 | static FLAC__bool simple_iterator_copy_file_postfix_(FLAC__Metadata_SimpleIterator *iterator, FILE **tempfile, char **tempfilename, int fixup_is_last_code, long fixup_is_last_flag_offset, FLAC__bool backup); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 113 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 114 | static FLAC__bool copy_n_bytes_from_file_(FILE *file, FILE *tempfile, unsigned bytes/*@@@ 4G limit*/, FLAC__Metadata_SimpleIteratorStatus *status); |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 115 | static FLAC__bool copy_n_bytes_from_file_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOHandle temp_handle, FLAC__IOCallback_Write temp_write_cb, unsigned bytes/*@@@ 4G limit*/, FLAC__Metadata_SimpleIteratorStatus *status); |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 116 | static FLAC__bool copy_remaining_bytes_from_file_(FILE *file, FILE *tempfile, FLAC__Metadata_SimpleIteratorStatus *status); |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 117 | static FLAC__bool copy_remaining_bytes_from_file_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOCallback_Eof eof_cb, FLAC__IOHandle temp_handle, FLAC__IOCallback_Write temp_write_cb, FLAC__Metadata_SimpleIteratorStatus *status); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 118 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 119 | static FLAC__bool open_tempfile_(const char *filename, const char *tempfile_path_prefix, FILE **tempfile, char **tempfilename, FLAC__Metadata_SimpleIteratorStatus *status); |
| 120 | static FLAC__bool transport_tempfile_(const char *filename, FILE **tempfile, char **tempfilename, FLAC__Metadata_SimpleIteratorStatus *status); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 121 | static void cleanup_tempfile_(FILE **tempfile, char **tempfilename); |
| 122 | |
| 123 | static FLAC__bool get_file_stats_(const char *filename, struct stat *stats); |
| 124 | static void set_file_stats_(const char *filename, struct stat *stats); |
| 125 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 126 | static int fseek_wrapper_(FLAC__IOHandle handle, FLAC__int64 offset, int whence); |
| 127 | static FLAC__int64 ftell_wrapper_(FLAC__IOHandle handle); |
| 128 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 129 | static FLAC__Metadata_ChainStatus get_equivalent_status_(FLAC__Metadata_SimpleIteratorStatus status); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 130 | |
| 131 | |
Josh Coalson | f91251d | 2002-12-28 07:04:49 +0000 | [diff] [blame] | 132 | #ifdef FLAC__VALGRIND_TESTING |
| 133 | static size_t local__fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream) |
| 134 | { |
| 135 | size_t ret = fwrite(ptr, size, nmemb, stream); |
| 136 | if(!ferror(stream)) |
| 137 | fflush(stream); |
| 138 | return ret; |
| 139 | } |
| 140 | #else |
| 141 | #define local__fwrite fwrite |
| 142 | #endif |
| 143 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 144 | /**************************************************************************** |
| 145 | * |
| 146 | * Level 0 implementation |
| 147 | * |
| 148 | ***************************************************************************/ |
| 149 | |
Josh Coalson | 57ba6f4 | 2002-06-07 05:27:37 +0000 | [diff] [blame] | 150 | static FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__FileDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data); |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 151 | static void metadata_callback_(const FLAC__FileDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 152 | static void error_callback_(const FLAC__FileDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data); |
| 153 | |
Josh Coalson | 57ba6f4 | 2002-06-07 05:27:37 +0000 | [diff] [blame] | 154 | typedef struct { |
| 155 | FLAC__bool got_error; |
| 156 | FLAC__bool got_streaminfo; |
Josh Coalson | 999be3b | 2002-06-10 04:42:35 +0000 | [diff] [blame] | 157 | FLAC__StreamMetadata *streaminfo; |
Josh Coalson | 57ba6f4 | 2002-06-07 05:27:37 +0000 | [diff] [blame] | 158 | } level0_client_data; |
| 159 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 160 | FLAC_API FLAC__bool FLAC__metadata_get_streaminfo(const char *filename, FLAC__StreamMetadata *streaminfo) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 161 | { |
Josh Coalson | 57ba6f4 | 2002-06-07 05:27:37 +0000 | [diff] [blame] | 162 | level0_client_data cd; |
Josh Coalson | 9b86c96 | 2002-07-10 07:11:15 +0000 | [diff] [blame] | 163 | FLAC__FileDecoder *decoder; |
| 164 | |
| 165 | FLAC__ASSERT(0 != filename); |
| 166 | FLAC__ASSERT(0 != streaminfo); |
| 167 | |
| 168 | decoder = FLAC__file_decoder_new(); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 169 | |
| 170 | if(0 == decoder) |
| 171 | return false; |
| 172 | |
Josh Coalson | 57ba6f4 | 2002-06-07 05:27:37 +0000 | [diff] [blame] | 173 | cd.got_error = false; |
| 174 | cd.got_streaminfo = false; |
| 175 | cd.streaminfo = streaminfo; |
| 176 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 177 | FLAC__file_decoder_set_md5_checking(decoder, false); |
| 178 | FLAC__file_decoder_set_filename(decoder, filename); |
Josh Coalson | b4e186a | 2002-08-12 21:35:43 +0000 | [diff] [blame] | 179 | FLAC__file_decoder_set_metadata_ignore_all(decoder); |
| 180 | FLAC__file_decoder_set_metadata_respond(decoder, FLAC__METADATA_TYPE_STREAMINFO); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 181 | FLAC__file_decoder_set_write_callback(decoder, write_callback_); |
| 182 | FLAC__file_decoder_set_metadata_callback(decoder, metadata_callback_); |
| 183 | FLAC__file_decoder_set_error_callback(decoder, error_callback_); |
Josh Coalson | 57ba6f4 | 2002-06-07 05:27:37 +0000 | [diff] [blame] | 184 | FLAC__file_decoder_set_client_data(decoder, &cd); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 185 | |
Josh Coalson | 57ba6f4 | 2002-06-07 05:27:37 +0000 | [diff] [blame] | 186 | if(FLAC__file_decoder_init(decoder) != FLAC__FILE_DECODER_OK || cd.got_error) { |
| 187 | FLAC__file_decoder_finish(decoder); |
| 188 | FLAC__file_decoder_delete(decoder); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 189 | return false; |
Josh Coalson | 57ba6f4 | 2002-06-07 05:27:37 +0000 | [diff] [blame] | 190 | } |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 191 | |
Josh Coalson | 3cec051 | 2002-08-02 06:26:12 +0000 | [diff] [blame] | 192 | /* the first thing decoded must be the STREAMINFO block: */ |
Josh Coalson | b4e186a | 2002-08-12 21:35:43 +0000 | [diff] [blame] | 193 | if(!FLAC__file_decoder_process_until_end_of_metadata(decoder) || cd.got_error) { |
Josh Coalson | 57ba6f4 | 2002-06-07 05:27:37 +0000 | [diff] [blame] | 194 | FLAC__file_decoder_finish(decoder); |
| 195 | FLAC__file_decoder_delete(decoder); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 196 | return false; |
Josh Coalson | 57ba6f4 | 2002-06-07 05:27:37 +0000 | [diff] [blame] | 197 | } |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 198 | |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 199 | FLAC__file_decoder_finish(decoder); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 200 | FLAC__file_decoder_delete(decoder); |
| 201 | |
Josh Coalson | 57ba6f4 | 2002-06-07 05:27:37 +0000 | [diff] [blame] | 202 | return !cd.got_error && cd.got_streaminfo; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 203 | } |
| 204 | |
Josh Coalson | 57ba6f4 | 2002-06-07 05:27:37 +0000 | [diff] [blame] | 205 | FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__FileDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 206 | { |
| 207 | (void)decoder, (void)frame, (void)buffer, (void)client_data; |
| 208 | |
Josh Coalson | 2835f43 | 2002-06-04 05:54:44 +0000 | [diff] [blame] | 209 | return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 210 | } |
| 211 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 212 | void metadata_callback_(const FLAC__FileDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 213 | { |
Josh Coalson | 57ba6f4 | 2002-06-07 05:27:37 +0000 | [diff] [blame] | 214 | level0_client_data *cd = (level0_client_data *)client_data; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 215 | (void)decoder; |
| 216 | |
Josh Coalson | 57ba6f4 | 2002-06-07 05:27:37 +0000 | [diff] [blame] | 217 | if(metadata->type == FLAC__METADATA_TYPE_STREAMINFO && 0 != cd->streaminfo) { |
Josh Coalson | 999be3b | 2002-06-10 04:42:35 +0000 | [diff] [blame] | 218 | *(cd->streaminfo) = *metadata; |
Josh Coalson | 57ba6f4 | 2002-06-07 05:27:37 +0000 | [diff] [blame] | 219 | cd->got_streaminfo = true; |
| 220 | } |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 221 | } |
| 222 | |
| 223 | void error_callback_(const FLAC__FileDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data) |
| 224 | { |
Josh Coalson | 57ba6f4 | 2002-06-07 05:27:37 +0000 | [diff] [blame] | 225 | level0_client_data *cd = (level0_client_data *)client_data; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 226 | (void)decoder; |
| 227 | |
Josh Coalson | 2835f43 | 2002-06-04 05:54:44 +0000 | [diff] [blame] | 228 | if(status != FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC) |
Josh Coalson | 57ba6f4 | 2002-06-07 05:27:37 +0000 | [diff] [blame] | 229 | cd->got_error = true; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 230 | } |
| 231 | |
| 232 | |
| 233 | /**************************************************************************** |
| 234 | * |
| 235 | * Level 1 implementation |
| 236 | * |
| 237 | ***************************************************************************/ |
| 238 | |
| 239 | #define SIMPLE_ITERATOR_MAX_PUSH_DEPTH (1+4) |
| 240 | /* 1 for initial offset, +4 for our own personal use */ |
| 241 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 242 | struct FLAC__Metadata_SimpleIterator { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 243 | FILE *file; |
| 244 | char *filename, *tempfile_path_prefix; |
| 245 | struct stat stats; |
| 246 | FLAC__bool has_stats; |
| 247 | FLAC__bool is_writable; |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 248 | FLAC__Metadata_SimpleIteratorStatus status; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 249 | /*@@@ 2G limits here because of the offset type: */ |
| 250 | long offset[SIMPLE_ITERATOR_MAX_PUSH_DEPTH]; |
| 251 | long first_offset; /* this is the offset to the STREAMINFO block */ |
| 252 | unsigned depth; |
| 253 | /* this is the metadata block header of the current block we are pointing to: */ |
| 254 | FLAC__bool is_last; |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 255 | FLAC__MetadataType type; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 256 | unsigned length; |
| 257 | }; |
| 258 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 259 | FLAC_API const char * const FLAC__Metadata_SimpleIteratorStatusString[] = { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 260 | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK", |
| 261 | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ILLEGAL_INPUT", |
| 262 | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ERROR_OPENING_FILE", |
| 263 | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_A_FLAC_FILE", |
| 264 | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_WRITABLE", |
Josh Coalson | a7b673c | 2002-05-25 02:13:38 +0000 | [diff] [blame] | 265 | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_BAD_METADATA", |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 266 | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR", |
| 267 | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR", |
| 268 | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_WRITE_ERROR", |
| 269 | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_RENAME_ERROR", |
| 270 | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_UNLINK_ERROR", |
| 271 | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR", |
| 272 | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_INTERNAL_ERROR" |
| 273 | }; |
| 274 | |
| 275 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 276 | FLAC_API FLAC__Metadata_SimpleIterator *FLAC__metadata_simple_iterator_new() |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 277 | { |
Josh Coalson | 5e3fcb2 | 2002-11-06 07:11:26 +0000 | [diff] [blame] | 278 | FLAC__Metadata_SimpleIterator *iterator = (FLAC__Metadata_SimpleIterator*)calloc(1, sizeof(FLAC__Metadata_SimpleIterator)); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 279 | |
| 280 | if(0 != iterator) { |
| 281 | iterator->file = 0; |
| 282 | iterator->filename = 0; |
| 283 | iterator->tempfile_path_prefix = 0; |
| 284 | iterator->has_stats = false; |
| 285 | iterator->is_writable = false; |
| 286 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
| 287 | iterator->first_offset = iterator->offset[0] = -1; |
| 288 | iterator->depth = 0; |
| 289 | } |
| 290 | |
| 291 | return iterator; |
| 292 | } |
| 293 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 294 | static void simple_iterator_free_guts_(FLAC__Metadata_SimpleIterator *iterator) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 295 | { |
| 296 | FLAC__ASSERT(0 != iterator); |
| 297 | |
| 298 | if(0 != iterator->file) { |
| 299 | fclose(iterator->file); |
| 300 | iterator->file = 0; |
| 301 | if(iterator->has_stats) |
| 302 | set_file_stats_(iterator->filename, &iterator->stats); |
| 303 | } |
| 304 | if(0 != iterator->filename) { |
| 305 | free(iterator->filename); |
| 306 | iterator->filename = 0; |
| 307 | } |
| 308 | if(0 != iterator->tempfile_path_prefix) { |
| 309 | free(iterator->tempfile_path_prefix); |
| 310 | iterator->tempfile_path_prefix = 0; |
| 311 | } |
| 312 | } |
| 313 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 314 | FLAC_API void FLAC__metadata_simple_iterator_delete(FLAC__Metadata_SimpleIterator *iterator) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 315 | { |
| 316 | FLAC__ASSERT(0 != iterator); |
| 317 | |
| 318 | simple_iterator_free_guts_(iterator); |
| 319 | free(iterator); |
| 320 | } |
| 321 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 322 | FLAC_API FLAC__Metadata_SimpleIteratorStatus FLAC__metadata_simple_iterator_status(FLAC__Metadata_SimpleIterator *iterator) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 323 | { |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 324 | FLAC__Metadata_SimpleIteratorStatus status; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 325 | |
| 326 | FLAC__ASSERT(0 != iterator); |
| 327 | |
| 328 | status = iterator->status; |
| 329 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
| 330 | return status; |
| 331 | } |
| 332 | |
Josh Coalson | 3ac6693 | 2002-08-30 05:41:31 +0000 | [diff] [blame] | 333 | static FLAC__bool simple_iterator_prime_input_(FLAC__Metadata_SimpleIterator *iterator, FLAC__bool read_only) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 334 | { |
| 335 | unsigned ret; |
| 336 | |
| 337 | FLAC__ASSERT(0 != iterator); |
| 338 | |
Josh Coalson | 3ac6693 | 2002-08-30 05:41:31 +0000 | [diff] [blame] | 339 | if(read_only || 0 == (iterator->file = fopen(iterator->filename, "r+b"))) { |
| 340 | iterator->is_writable = false; |
Josh Coalson | 3ac6693 | 2002-08-30 05:41:31 +0000 | [diff] [blame] | 341 | if(read_only || errno == EACCES) { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 342 | if(0 == (iterator->file = fopen(iterator->filename, "rb"))) { |
| 343 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ERROR_OPENING_FILE; |
| 344 | return false; |
| 345 | } |
| 346 | } |
| 347 | else { |
| 348 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ERROR_OPENING_FILE; |
| 349 | return false; |
| 350 | } |
| 351 | } |
| 352 | else { |
| 353 | iterator->is_writable = true; |
| 354 | } |
| 355 | |
| 356 | ret = seek_to_first_metadata_block_(iterator->file); |
| 357 | switch(ret) { |
| 358 | case 0: |
| 359 | iterator->depth = 0; |
| 360 | iterator->first_offset = iterator->offset[iterator->depth] = ftell(iterator->file); |
| 361 | return read_metadata_block_header_(iterator); |
| 362 | case 1: |
| 363 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 364 | return false; |
| 365 | case 2: |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 366 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
| 367 | return false; |
| 368 | case 3: |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 369 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_A_FLAC_FILE; |
| 370 | return false; |
| 371 | default: |
| 372 | FLAC__ASSERT(0); |
| 373 | return false; |
| 374 | } |
| 375 | } |
| 376 | |
| 377 | #if 0 |
| 378 | @@@ If we decide to finish implementing this, put this comment back in metadata.h |
| 379 | /* |
| 380 | * The 'tempfile_path_prefix' allows you to specify a directory where |
| 381 | * tempfiles should go. Remember that if your metadata edits cause the |
| 382 | * FLAC file to grow, the entire file will have to be rewritten. If |
| 383 | * 'tempfile_path_prefix' is NULL, the temp file will be written in the |
| 384 | * same directory as the original FLAC file. This makes replacing the |
| 385 | * original with the tempfile fast but requires extra space in the same |
| 386 | * partition for the tempfile. If space is a problem, you can pass a |
| 387 | * directory name belonging to a different partition in |
| 388 | * 'tempfile_path_prefix'. Note that you should use the forward slash |
| 389 | * '/' as the directory separator. A trailing slash is not needed; it |
| 390 | * will be added automatically. |
| 391 | */ |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 392 | FLAC__bool FLAC__metadata_simple_iterator_init(FLAC__Metadata_SimpleIterator *iterator, const char *filename, FLAC__bool preserve_file_stats, const char *tempfile_path_prefix); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 393 | #endif |
| 394 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 395 | FLAC_API FLAC__bool FLAC__metadata_simple_iterator_init(FLAC__Metadata_SimpleIterator *iterator, const char *filename, FLAC__bool read_only, FLAC__bool preserve_file_stats) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 396 | { |
Josh Coalson | 7294309 | 2002-05-22 05:35:43 +0000 | [diff] [blame] | 397 | const char *tempfile_path_prefix = 0; /*@@@ search for comments near 'rename(...)' for what it will take to finish implementing this */ |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 398 | |
| 399 | FLAC__ASSERT(0 != iterator); |
| 400 | FLAC__ASSERT(0 != filename); |
| 401 | |
| 402 | simple_iterator_free_guts_(iterator); |
| 403 | |
Josh Coalson | 3ac6693 | 2002-08-30 05:41:31 +0000 | [diff] [blame] | 404 | if(!read_only && preserve_file_stats) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 405 | iterator->has_stats = get_file_stats_(filename, &iterator->stats); |
| 406 | |
| 407 | if(0 == (iterator->filename = strdup(filename))) { |
| 408 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
| 409 | return false; |
| 410 | } |
| 411 | if(0 != tempfile_path_prefix && 0 == (iterator->tempfile_path_prefix = strdup(tempfile_path_prefix))) { |
| 412 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
| 413 | return false; |
| 414 | } |
| 415 | |
Josh Coalson | 3ac6693 | 2002-08-30 05:41:31 +0000 | [diff] [blame] | 416 | return simple_iterator_prime_input_(iterator, read_only); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 417 | } |
| 418 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 419 | FLAC_API FLAC__bool FLAC__metadata_simple_iterator_is_writable(const FLAC__Metadata_SimpleIterator *iterator) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 420 | { |
| 421 | FLAC__ASSERT(0 != iterator); |
| 422 | FLAC__ASSERT(0 != iterator->file); |
| 423 | |
| 424 | return iterator->is_writable; |
| 425 | } |
| 426 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 427 | FLAC_API FLAC__bool FLAC__metadata_simple_iterator_next(FLAC__Metadata_SimpleIterator *iterator) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 428 | { |
| 429 | FLAC__ASSERT(0 != iterator); |
| 430 | FLAC__ASSERT(0 != iterator->file); |
| 431 | |
| 432 | if(iterator->is_last) |
| 433 | return false; |
| 434 | |
| 435 | if(0 != fseek(iterator->file, iterator->length, SEEK_CUR)) { |
| 436 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
| 437 | return false; |
| 438 | } |
| 439 | |
| 440 | iterator->offset[iterator->depth] = ftell(iterator->file); |
| 441 | |
| 442 | return read_metadata_block_header_(iterator); |
| 443 | } |
| 444 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 445 | FLAC_API FLAC__bool FLAC__metadata_simple_iterator_prev(FLAC__Metadata_SimpleIterator *iterator) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 446 | { |
| 447 | long this_offset; |
| 448 | |
| 449 | FLAC__ASSERT(0 != iterator); |
| 450 | FLAC__ASSERT(0 != iterator->file); |
| 451 | |
| 452 | if(iterator->offset[iterator->depth] == iterator->first_offset) |
| 453 | return false; |
| 454 | |
| 455 | if(0 != fseek(iterator->file, iterator->first_offset, SEEK_SET)) { |
| 456 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
| 457 | return false; |
| 458 | } |
| 459 | this_offset = iterator->first_offset; |
| 460 | if(!read_metadata_block_header_(iterator)) |
| 461 | return false; |
| 462 | |
| 463 | /* we ignore any error from ftell() and catch it in fseek() */ |
| 464 | while(ftell(iterator->file) + (long)iterator->length < iterator->offset[iterator->depth]) { |
| 465 | if(0 != fseek(iterator->file, iterator->length, SEEK_CUR)) { |
| 466 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
| 467 | return false; |
| 468 | } |
| 469 | this_offset = ftell(iterator->file); |
| 470 | if(!read_metadata_block_header_(iterator)) |
| 471 | return false; |
| 472 | } |
| 473 | |
| 474 | iterator->offset[iterator->depth] = this_offset; |
| 475 | |
| 476 | return true; |
| 477 | } |
| 478 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 479 | FLAC_API FLAC__MetadataType FLAC__metadata_simple_iterator_get_block_type(const FLAC__Metadata_SimpleIterator *iterator) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 480 | { |
| 481 | FLAC__ASSERT(0 != iterator); |
| 482 | FLAC__ASSERT(0 != iterator->file); |
| 483 | |
| 484 | return iterator->type; |
| 485 | } |
| 486 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 487 | FLAC_API FLAC__StreamMetadata *FLAC__metadata_simple_iterator_get_block(FLAC__Metadata_SimpleIterator *iterator) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 488 | { |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 489 | FLAC__StreamMetadata *block = FLAC__metadata_object_new(iterator->type); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 490 | |
| 491 | FLAC__ASSERT(0 != iterator); |
| 492 | FLAC__ASSERT(0 != iterator->file); |
| 493 | |
| 494 | if(0 != block) { |
| 495 | block->is_last = iterator->is_last; |
| 496 | block->length = iterator->length; |
| 497 | |
| 498 | if(!read_metadata_block_data_(iterator, block)) { |
| 499 | FLAC__metadata_object_delete(block); |
| 500 | return 0; |
| 501 | } |
| 502 | |
| 503 | /* back up to the beginning of the block data to stay consistent */ |
Josh Coalson | eb643a2 | 2002-05-20 05:58:50 +0000 | [diff] [blame] | 504 | if(0 != fseek(iterator->file, iterator->offset[iterator->depth] + FLAC__STREAM_METADATA_HEADER_LENGTH, SEEK_SET)) { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 505 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
| 506 | FLAC__metadata_object_delete(block); |
| 507 | return 0; |
| 508 | } |
| 509 | } |
| 510 | else |
| 511 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
| 512 | |
| 513 | return block; |
| 514 | } |
| 515 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 516 | FLAC_API FLAC__bool FLAC__metadata_simple_iterator_set_block(FLAC__Metadata_SimpleIterator *iterator, FLAC__StreamMetadata *block, FLAC__bool use_padding) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 517 | { |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 518 | FLAC__ASSERT_DECLARATION(long debug_target_offset = iterator->offset[iterator->depth];) |
| 519 | FLAC__bool ret; |
| 520 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 521 | FLAC__ASSERT(0 != iterator); |
| 522 | FLAC__ASSERT(0 != iterator->file); |
Josh Coalson | d8ab346 | 2002-07-11 05:54:05 +0000 | [diff] [blame] | 523 | FLAC__ASSERT(0 != block); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 524 | |
| 525 | if(!iterator->is_writable) { |
| 526 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_WRITABLE; |
| 527 | return false; |
| 528 | } |
| 529 | |
| 530 | if(iterator->type == FLAC__METADATA_TYPE_STREAMINFO || block->type == FLAC__METADATA_TYPE_STREAMINFO) { |
| 531 | if(iterator->type != block->type) { |
| 532 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ILLEGAL_INPUT; |
| 533 | return false; |
| 534 | } |
| 535 | } |
| 536 | |
| 537 | block->is_last = iterator->is_last; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 538 | |
| 539 | if(iterator->length == block->length) |
| 540 | return write_metadata_block_stationary_(iterator, block); |
| 541 | else if(iterator->length > block->length) { |
Josh Coalson | eb643a2 | 2002-05-20 05:58:50 +0000 | [diff] [blame] | 542 | if(use_padding && iterator->length >= FLAC__STREAM_METADATA_HEADER_LENGTH + block->length) { |
Josh Coalson | ccce9ed | 2003-01-13 02:06:40 +0000 | [diff] [blame] | 543 | ret = write_metadata_block_stationary_with_padding_(iterator, block, iterator->length - FLAC__STREAM_METADATA_HEADER_LENGTH - block->length, block->is_last); |
| 544 | FLAC__ASSERT(!ret || iterator->offset[iterator->depth] == debug_target_offset); |
| 545 | FLAC__ASSERT(!ret || ftell(iterator->file) == debug_target_offset + (long)FLAC__STREAM_METADATA_HEADER_LENGTH); |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 546 | return ret; |
| 547 | } |
| 548 | else { |
| 549 | ret = rewrite_whole_file_(iterator, block, /*append=*/false); |
Josh Coalson | ccce9ed | 2003-01-13 02:06:40 +0000 | [diff] [blame] | 550 | FLAC__ASSERT(!ret || iterator->offset[iterator->depth] == debug_target_offset); |
| 551 | FLAC__ASSERT(!ret || ftell(iterator->file) == debug_target_offset + (long)FLAC__STREAM_METADATA_HEADER_LENGTH); |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 552 | return ret; |
| 553 | } |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 554 | } |
| 555 | else /* iterator->length < block->length */ { |
| 556 | unsigned padding_leftover = 0; |
| 557 | FLAC__bool padding_is_last = false; |
| 558 | if(use_padding) { |
| 559 | /* first see if we can even use padding */ |
| 560 | if(iterator->is_last) { |
| 561 | use_padding = false; |
| 562 | } |
| 563 | else { |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 564 | const unsigned extra_padding_bytes_required = block->length - iterator->length; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 565 | simple_iterator_push_(iterator); |
| 566 | if(!FLAC__metadata_simple_iterator_next(iterator)) { |
| 567 | (void)simple_iterator_pop_(iterator); |
| 568 | return false; |
| 569 | } |
| 570 | if(iterator->type != FLAC__METADATA_TYPE_PADDING) { |
| 571 | use_padding = false; |
| 572 | } |
| 573 | else { |
Josh Coalson | eb643a2 | 2002-05-20 05:58:50 +0000 | [diff] [blame] | 574 | if(FLAC__STREAM_METADATA_HEADER_LENGTH + iterator->length == extra_padding_bytes_required) { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 575 | padding_leftover = 0; |
| 576 | block->is_last = iterator->is_last; |
| 577 | } |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 578 | else if(iterator->length < extra_padding_bytes_required) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 579 | use_padding = false; |
| 580 | else { |
Josh Coalson | eb643a2 | 2002-05-20 05:58:50 +0000 | [diff] [blame] | 581 | padding_leftover = FLAC__STREAM_METADATA_HEADER_LENGTH + iterator->length - extra_padding_bytes_required; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 582 | padding_is_last = iterator->is_last; |
| 583 | block->is_last = false; |
| 584 | } |
| 585 | } |
| 586 | if(!simple_iterator_pop_(iterator)) |
| 587 | return false; |
| 588 | } |
| 589 | } |
| 590 | if(use_padding) { |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 591 | if(padding_leftover == 0) { |
| 592 | ret = write_metadata_block_stationary_(iterator, block); |
Josh Coalson | ccce9ed | 2003-01-13 02:06:40 +0000 | [diff] [blame] | 593 | FLAC__ASSERT(!ret || iterator->offset[iterator->depth] == debug_target_offset); |
| 594 | FLAC__ASSERT(!ret || ftell(iterator->file) == debug_target_offset + (long)FLAC__STREAM_METADATA_HEADER_LENGTH); |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 595 | return ret; |
| 596 | } |
| 597 | else { |
Josh Coalson | eb643a2 | 2002-05-20 05:58:50 +0000 | [diff] [blame] | 598 | FLAC__ASSERT(padding_leftover >= FLAC__STREAM_METADATA_HEADER_LENGTH); |
| 599 | ret = write_metadata_block_stationary_with_padding_(iterator, block, padding_leftover - FLAC__STREAM_METADATA_HEADER_LENGTH, padding_is_last); |
Josh Coalson | ccce9ed | 2003-01-13 02:06:40 +0000 | [diff] [blame] | 600 | FLAC__ASSERT(!ret || iterator->offset[iterator->depth] == debug_target_offset); |
| 601 | FLAC__ASSERT(!ret || ftell(iterator->file) == debug_target_offset + (long)FLAC__STREAM_METADATA_HEADER_LENGTH); |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 602 | return ret; |
| 603 | } |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 604 | } |
| 605 | else { |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 606 | ret = rewrite_whole_file_(iterator, block, /*append=*/false); |
Josh Coalson | ccce9ed | 2003-01-13 02:06:40 +0000 | [diff] [blame] | 607 | FLAC__ASSERT(!ret || iterator->offset[iterator->depth] == debug_target_offset); |
| 608 | FLAC__ASSERT(!ret || ftell(iterator->file) == debug_target_offset + (long)FLAC__STREAM_METADATA_HEADER_LENGTH); |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 609 | return ret; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 610 | } |
| 611 | } |
| 612 | } |
| 613 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 614 | FLAC_API FLAC__bool FLAC__metadata_simple_iterator_insert_block_after(FLAC__Metadata_SimpleIterator *iterator, FLAC__StreamMetadata *block, FLAC__bool use_padding) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 615 | { |
| 616 | unsigned padding_leftover = 0; |
| 617 | FLAC__bool padding_is_last = false; |
| 618 | |
Josh Coalson | eb643a2 | 2002-05-20 05:58:50 +0000 | [diff] [blame] | 619 | FLAC__ASSERT_DECLARATION(long debug_target_offset = iterator->offset[iterator->depth] + FLAC__STREAM_METADATA_HEADER_LENGTH + iterator->length;) |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 620 | FLAC__bool ret; |
| 621 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 622 | FLAC__ASSERT(0 != iterator); |
| 623 | FLAC__ASSERT(0 != iterator->file); |
Josh Coalson | d8ab346 | 2002-07-11 05:54:05 +0000 | [diff] [blame] | 624 | FLAC__ASSERT(0 != block); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 625 | |
| 626 | if(!iterator->is_writable) |
| 627 | return false; |
| 628 | |
| 629 | if(block->type == FLAC__METADATA_TYPE_STREAMINFO) { |
| 630 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ILLEGAL_INPUT; |
| 631 | return false; |
| 632 | } |
| 633 | |
Josh Coalson | 6b02a75 | 2002-05-10 06:42:02 +0000 | [diff] [blame] | 634 | block->is_last = iterator->is_last; |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 635 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 636 | if(use_padding) { |
| 637 | /* first see if we can even use padding */ |
| 638 | if(iterator->is_last) { |
| 639 | use_padding = false; |
| 640 | } |
| 641 | else { |
| 642 | simple_iterator_push_(iterator); |
| 643 | if(!FLAC__metadata_simple_iterator_next(iterator)) { |
| 644 | (void)simple_iterator_pop_(iterator); |
| 645 | return false; |
| 646 | } |
| 647 | if(iterator->type != FLAC__METADATA_TYPE_PADDING) { |
| 648 | use_padding = false; |
| 649 | } |
| 650 | else { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 651 | if(iterator->length == block->length) { |
| 652 | padding_leftover = 0; |
| 653 | block->is_last = iterator->is_last; |
| 654 | } |
Josh Coalson | eb643a2 | 2002-05-20 05:58:50 +0000 | [diff] [blame] | 655 | else if(iterator->length < FLAC__STREAM_METADATA_HEADER_LENGTH + block->length) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 656 | use_padding = false; |
| 657 | else { |
Josh Coalson | 6b02a75 | 2002-05-10 06:42:02 +0000 | [diff] [blame] | 658 | padding_leftover = iterator->length - block->length; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 659 | padding_is_last = iterator->is_last; |
| 660 | block->is_last = false; |
| 661 | } |
| 662 | } |
| 663 | if(!simple_iterator_pop_(iterator)) |
| 664 | return false; |
| 665 | } |
| 666 | } |
| 667 | if(use_padding) { |
| 668 | /* move to the next block, which is suitable padding */ |
| 669 | if(!FLAC__metadata_simple_iterator_next(iterator)) |
| 670 | return false; |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 671 | if(padding_leftover == 0) { |
| 672 | ret = write_metadata_block_stationary_(iterator, block); |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 673 | FLAC__ASSERT(iterator->offset[iterator->depth] == debug_target_offset); |
Josh Coalson | 7294309 | 2002-05-22 05:35:43 +0000 | [diff] [blame] | 674 | FLAC__ASSERT(ftell(iterator->file) == debug_target_offset + (long)FLAC__STREAM_METADATA_HEADER_LENGTH); |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 675 | return ret; |
| 676 | } |
| 677 | else { |
Josh Coalson | eb643a2 | 2002-05-20 05:58:50 +0000 | [diff] [blame] | 678 | FLAC__ASSERT(padding_leftover >= FLAC__STREAM_METADATA_HEADER_LENGTH); |
| 679 | ret = write_metadata_block_stationary_with_padding_(iterator, block, padding_leftover - FLAC__STREAM_METADATA_HEADER_LENGTH, padding_is_last); |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 680 | FLAC__ASSERT(iterator->offset[iterator->depth] == debug_target_offset); |
Josh Coalson | 7294309 | 2002-05-22 05:35:43 +0000 | [diff] [blame] | 681 | FLAC__ASSERT(ftell(iterator->file) == debug_target_offset + (long)FLAC__STREAM_METADATA_HEADER_LENGTH); |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 682 | return ret; |
| 683 | } |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 684 | } |
| 685 | else { |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 686 | ret = rewrite_whole_file_(iterator, block, /*append=*/true); |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 687 | FLAC__ASSERT(iterator->offset[iterator->depth] == debug_target_offset); |
Josh Coalson | 7294309 | 2002-05-22 05:35:43 +0000 | [diff] [blame] | 688 | FLAC__ASSERT(ftell(iterator->file) == debug_target_offset + (long)FLAC__STREAM_METADATA_HEADER_LENGTH); |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 689 | return ret; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 690 | } |
| 691 | } |
| 692 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 693 | FLAC_API FLAC__bool FLAC__metadata_simple_iterator_delete_block(FLAC__Metadata_SimpleIterator *iterator, FLAC__bool use_padding) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 694 | { |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 695 | FLAC__ASSERT_DECLARATION(long debug_target_offset = iterator->offset[iterator->depth];) |
| 696 | FLAC__bool ret; |
| 697 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 698 | if(iterator->type == FLAC__METADATA_TYPE_STREAMINFO) { |
| 699 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ILLEGAL_INPUT; |
| 700 | return false; |
| 701 | } |
| 702 | |
| 703 | if(use_padding) { |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 704 | FLAC__StreamMetadata *padding = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 705 | if(0 == padding) { |
| 706 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
| 707 | return false; |
| 708 | } |
| 709 | padding->length = iterator->length; |
| 710 | if(!FLAC__metadata_simple_iterator_set_block(iterator, padding, false)) { |
| 711 | FLAC__metadata_object_delete(padding); |
| 712 | return false; |
| 713 | } |
| 714 | FLAC__metadata_object_delete(padding); |
Josh Coalson | 6b02a75 | 2002-05-10 06:42:02 +0000 | [diff] [blame] | 715 | if(!FLAC__metadata_simple_iterator_prev(iterator)) |
| 716 | return false; |
Josh Coalson | 7294309 | 2002-05-22 05:35:43 +0000 | [diff] [blame] | 717 | FLAC__ASSERT(iterator->offset[iterator->depth] + (long)FLAC__STREAM_METADATA_HEADER_LENGTH + (long)iterator->length == debug_target_offset); |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 718 | FLAC__ASSERT(ftell(iterator->file) + (long)iterator->length == debug_target_offset); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 719 | return true; |
| 720 | } |
| 721 | else { |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 722 | ret = rewrite_whole_file_(iterator, 0, /*append=*/false); |
Josh Coalson | 7294309 | 2002-05-22 05:35:43 +0000 | [diff] [blame] | 723 | FLAC__ASSERT(iterator->offset[iterator->depth] + (long)FLAC__STREAM_METADATA_HEADER_LENGTH + (long)iterator->length == debug_target_offset); |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 724 | FLAC__ASSERT(ftell(iterator->file) + (long)iterator->length == debug_target_offset); |
| 725 | return ret; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 726 | } |
| 727 | } |
| 728 | |
| 729 | |
| 730 | |
| 731 | /**************************************************************************** |
| 732 | * |
| 733 | * Level 2 implementation |
| 734 | * |
| 735 | ***************************************************************************/ |
| 736 | |
| 737 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 738 | typedef struct FLAC__Metadata_Node { |
| 739 | FLAC__StreamMetadata *data; |
| 740 | struct FLAC__Metadata_Node *prev, *next; |
| 741 | } FLAC__Metadata_Node; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 742 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 743 | struct FLAC__Metadata_Chain { |
Josh Coalson | 91748be | 2004-07-10 22:28:03 +0000 | [diff] [blame] | 744 | char *filename; /* will be NULL if using callbacks */ |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 745 | FLAC__Metadata_Node *head; |
| 746 | FLAC__Metadata_Node *tail; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 747 | unsigned nodes; |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 748 | FLAC__Metadata_ChainStatus status; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 749 | long first_offset, last_offset; /*@@@ 2G limit */ |
| 750 | /* |
| 751 | * This is the length of the chain initially read from the FLAC file. |
Josh Coalson | 3ecb117 | 2002-06-15 05:09:47 +0000 | [diff] [blame] | 752 | * it is used to compare against the current length to decide whether |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 753 | * or not the whole file has to be rewritten. |
| 754 | */ |
| 755 | unsigned initial_length; /*@@@ 4G limit */ |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 756 | }; |
| 757 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 758 | struct FLAC__Metadata_Iterator { |
| 759 | FLAC__Metadata_Chain *chain; |
| 760 | FLAC__Metadata_Node *current; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 761 | }; |
| 762 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 763 | FLAC_API const char * const FLAC__Metadata_ChainStatusString[] = { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 764 | "FLAC__METADATA_CHAIN_STATUS_OK", |
| 765 | "FLAC__METADATA_CHAIN_STATUS_ILLEGAL_INPUT", |
| 766 | "FLAC__METADATA_CHAIN_STATUS_ERROR_OPENING_FILE", |
| 767 | "FLAC__METADATA_CHAIN_STATUS_NOT_A_FLAC_FILE", |
| 768 | "FLAC__METADATA_CHAIN_STATUS_NOT_WRITABLE", |
Josh Coalson | a7b673c | 2002-05-25 02:13:38 +0000 | [diff] [blame] | 769 | "FLAC__METADATA_CHAIN_STATUS_BAD_METADATA", |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 770 | "FLAC__METADATA_CHAIN_STATUS_READ_ERROR", |
| 771 | "FLAC__METADATA_CHAIN_STATUS_SEEK_ERROR", |
| 772 | "FLAC__METADATA_CHAIN_STATUS_WRITE_ERROR", |
| 773 | "FLAC__METADATA_CHAIN_STATUS_RENAME_ERROR", |
| 774 | "FLAC__METADATA_CHAIN_STATUS_UNLINK_ERROR", |
| 775 | "FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR", |
Josh Coalson | 91748be | 2004-07-10 22:28:03 +0000 | [diff] [blame] | 776 | "FLAC__METADATA_CHAIN_STATUS_INTERNAL_ERROR", |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 777 | "FLAC__METADATA_CHAIN_STATUS_INVALID_CALLBACKS", |
| 778 | "FLAC__METADATA_CHAIN_STATUS_READ_WRITE_MISMATCH", |
| 779 | "FLAC__METADATA_CHAIN_STATUS_WRONG_WRITE_CALL" |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 780 | }; |
| 781 | |
| 782 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 783 | static FLAC__Metadata_Node *node_new_() |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 784 | { |
Josh Coalson | ea7155f | 2002-10-18 05:49:19 +0000 | [diff] [blame] | 785 | return (FLAC__Metadata_Node*)calloc(1, sizeof(FLAC__Metadata_Node)); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 786 | } |
| 787 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 788 | static void node_delete_(FLAC__Metadata_Node *node) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 789 | { |
| 790 | FLAC__ASSERT(0 != node); |
| 791 | if(0 != node->data) |
| 792 | FLAC__metadata_object_delete(node->data); |
| 793 | free(node); |
| 794 | } |
| 795 | |
Josh Coalson | 91748be | 2004-07-10 22:28:03 +0000 | [diff] [blame] | 796 | static void chain_init_(FLAC__Metadata_Chain *chain) |
| 797 | { |
| 798 | FLAC__ASSERT(0 != chain); |
| 799 | |
| 800 | chain->filename = 0; |
| 801 | chain->head = chain->tail = 0; |
| 802 | chain->nodes = 0; |
| 803 | chain->status = FLAC__METADATA_CHAIN_STATUS_OK; |
| 804 | chain->initial_length = 0; |
| 805 | } |
| 806 | |
| 807 | static void chain_clear_(FLAC__Metadata_Chain *chain) |
| 808 | { |
| 809 | FLAC__Metadata_Node *node, *next; |
| 810 | |
| 811 | FLAC__ASSERT(0 != chain); |
| 812 | |
| 813 | for(node = chain->head; node; ) { |
| 814 | next = node->next; |
| 815 | node_delete_(node); |
| 816 | node = next; |
| 817 | } |
| 818 | |
| 819 | if(0 != chain->filename) |
| 820 | free(chain->filename); |
| 821 | |
| 822 | chain_init_(chain); |
| 823 | } |
| 824 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 825 | static void chain_append_node_(FLAC__Metadata_Chain *chain, FLAC__Metadata_Node *node) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 826 | { |
| 827 | FLAC__ASSERT(0 != chain); |
| 828 | FLAC__ASSERT(0 != node); |
Josh Coalson | 6b02a75 | 2002-05-10 06:42:02 +0000 | [diff] [blame] | 829 | FLAC__ASSERT(0 != node->data); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 830 | |
Josh Coalson | 6b02a75 | 2002-05-10 06:42:02 +0000 | [diff] [blame] | 831 | node->next = node->prev = 0; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 832 | node->data->is_last = true; |
| 833 | if(0 != chain->tail) |
| 834 | chain->tail->data->is_last = false; |
| 835 | |
| 836 | if(0 == chain->head) |
| 837 | chain->head = node; |
| 838 | else { |
Josh Coalson | 6b02a75 | 2002-05-10 06:42:02 +0000 | [diff] [blame] | 839 | FLAC__ASSERT(0 != chain->tail); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 840 | chain->tail->next = node; |
| 841 | node->prev = chain->tail; |
| 842 | } |
| 843 | chain->tail = node; |
| 844 | chain->nodes++; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 845 | } |
| 846 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 847 | static void chain_remove_node_(FLAC__Metadata_Chain *chain, FLAC__Metadata_Node *node) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 848 | { |
| 849 | FLAC__ASSERT(0 != chain); |
| 850 | FLAC__ASSERT(0 != node); |
| 851 | |
| 852 | if(node == chain->head) |
| 853 | chain->head = node->next; |
| 854 | else |
| 855 | node->prev->next = node->next; |
| 856 | |
| 857 | if(node == chain->tail) |
| 858 | chain->tail = node->prev; |
| 859 | else |
| 860 | node->next->prev = node->prev; |
| 861 | |
Josh Coalson | 6b02a75 | 2002-05-10 06:42:02 +0000 | [diff] [blame] | 862 | if(0 != chain->tail) |
| 863 | chain->tail->data->is_last = true; |
| 864 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 865 | chain->nodes--; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 866 | } |
| 867 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 868 | static void chain_delete_node_(FLAC__Metadata_Chain *chain, FLAC__Metadata_Node *node) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 869 | { |
| 870 | chain_remove_node_(chain, node); |
| 871 | node_delete_(node); |
| 872 | } |
| 873 | |
Josh Coalson | 3ecb117 | 2002-06-15 05:09:47 +0000 | [diff] [blame] | 874 | static unsigned chain_calculate_length_(FLAC__Metadata_Chain *chain) |
| 875 | { |
| 876 | const FLAC__Metadata_Node *node; |
| 877 | unsigned length = 0; |
| 878 | for(node = chain->head; node; node = node->next) |
| 879 | length += (FLAC__STREAM_METADATA_HEADER_LENGTH + node->data->length); |
| 880 | return length; |
| 881 | } |
| 882 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 883 | static void iterator_insert_node_(FLAC__Metadata_Iterator *iterator, FLAC__Metadata_Node *node) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 884 | { |
| 885 | FLAC__ASSERT(0 != node); |
Josh Coalson | 6b02a75 | 2002-05-10 06:42:02 +0000 | [diff] [blame] | 886 | FLAC__ASSERT(0 != node->data); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 887 | FLAC__ASSERT(0 != iterator); |
| 888 | FLAC__ASSERT(0 != iterator->current); |
| 889 | FLAC__ASSERT(0 != iterator->chain); |
| 890 | FLAC__ASSERT(0 != iterator->chain->head); |
| 891 | FLAC__ASSERT(0 != iterator->chain->tail); |
| 892 | |
Josh Coalson | 6b02a75 | 2002-05-10 06:42:02 +0000 | [diff] [blame] | 893 | node->data->is_last = false; |
Josh Coalson | 2745fe7 | 2002-05-11 05:31:56 +0000 | [diff] [blame] | 894 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 895 | node->prev = iterator->current->prev; |
Josh Coalson | 2745fe7 | 2002-05-11 05:31:56 +0000 | [diff] [blame] | 896 | node->next = iterator->current; |
| 897 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 898 | if(0 == node->prev) |
| 899 | iterator->chain->head = node; |
| 900 | else |
| 901 | node->prev->next = node; |
| 902 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 903 | iterator->current->prev = node; |
| 904 | |
| 905 | iterator->chain->nodes++; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 906 | } |
| 907 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 908 | static void iterator_insert_node_after_(FLAC__Metadata_Iterator *iterator, FLAC__Metadata_Node *node) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 909 | { |
| 910 | FLAC__ASSERT(0 != node); |
Josh Coalson | 6b02a75 | 2002-05-10 06:42:02 +0000 | [diff] [blame] | 911 | FLAC__ASSERT(0 != node->data); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 912 | FLAC__ASSERT(0 != iterator); |
| 913 | FLAC__ASSERT(0 != iterator->current); |
| 914 | FLAC__ASSERT(0 != iterator->chain); |
| 915 | FLAC__ASSERT(0 != iterator->chain->head); |
| 916 | FLAC__ASSERT(0 != iterator->chain->tail); |
| 917 | |
| 918 | iterator->current->data->is_last = false; |
| 919 | |
| 920 | node->prev = iterator->current; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 921 | node->next = iterator->current->next; |
Josh Coalson | 2745fe7 | 2002-05-11 05:31:56 +0000 | [diff] [blame] | 922 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 923 | if(0 == node->next) |
| 924 | iterator->chain->tail = node; |
| 925 | else |
| 926 | node->next->prev = node; |
| 927 | |
Josh Coalson | 2745fe7 | 2002-05-11 05:31:56 +0000 | [diff] [blame] | 928 | node->prev->next = node; |
| 929 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 930 | iterator->chain->tail->data->is_last = true; |
| 931 | |
| 932 | iterator->chain->nodes++; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 933 | } |
| 934 | |
Josh Coalson | 2745fe7 | 2002-05-11 05:31:56 +0000 | [diff] [blame] | 935 | /* return true iff node and node->next are both padding */ |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 936 | static FLAC__bool chain_merge_adjacent_padding_(FLAC__Metadata_Chain *chain, FLAC__Metadata_Node *node) |
Josh Coalson | 2745fe7 | 2002-05-11 05:31:56 +0000 | [diff] [blame] | 937 | { |
| 938 | if(node->data->type == FLAC__METADATA_TYPE_PADDING && 0 != node->next && node->next->data->type == FLAC__METADATA_TYPE_PADDING) { |
Josh Coalson | eb643a2 | 2002-05-20 05:58:50 +0000 | [diff] [blame] | 939 | const unsigned growth = FLAC__STREAM_METADATA_HEADER_LENGTH + node->next->data->length; |
Josh Coalson | 2745fe7 | 2002-05-11 05:31:56 +0000 | [diff] [blame] | 940 | node->data->length += growth; |
Josh Coalson | 2745fe7 | 2002-05-11 05:31:56 +0000 | [diff] [blame] | 941 | |
| 942 | chain_delete_node_(chain, node->next); |
| 943 | return true; |
| 944 | } |
| 945 | else |
| 946 | return false; |
| 947 | } |
| 948 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 949 | /* Returns the new length of the chain, or 0 if there was an error. */ |
| 950 | /* WATCHOUT: This can get called multiple times before a write, so |
| 951 | * it should still work when this happens. |
| 952 | */ |
| 953 | /* WATCHOUT: Make sure to also update the logic in |
| 954 | * FLAC__metadata_chain_check_if_tempfile_needed() if the logic here changes. |
| 955 | */ |
| 956 | static unsigned chain_prepare_for_write_(FLAC__Metadata_Chain *chain, FLAC__bool use_padding) |
| 957 | { |
| 958 | unsigned current_length = chain_calculate_length_(chain); |
| 959 | |
| 960 | if(use_padding) { |
| 961 | /* if the metadata shrank and the last block is padding, we just extend the last padding block */ |
| 962 | if(current_length < chain->initial_length && chain->tail->data->type == FLAC__METADATA_TYPE_PADDING) { |
| 963 | const unsigned delta = chain->initial_length - current_length; |
| 964 | chain->tail->data->length += delta; |
| 965 | current_length += delta; |
| 966 | FLAC__ASSERT(current_length == chain->initial_length); |
| 967 | } |
| 968 | /* if the metadata shrank more than 4 bytes then there's room to add another padding block */ |
| 969 | else if(current_length + FLAC__STREAM_METADATA_HEADER_LENGTH <= chain->initial_length) { |
| 970 | FLAC__StreamMetadata *padding; |
| 971 | FLAC__Metadata_Node *node; |
| 972 | if(0 == (padding = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING))) { |
| 973 | chain->status = FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR; |
| 974 | return 0; |
| 975 | } |
| 976 | padding->length = chain->initial_length - (FLAC__STREAM_METADATA_HEADER_LENGTH + current_length); |
| 977 | if(0 == (node = node_new_())) { |
| 978 | FLAC__metadata_object_delete(padding); |
| 979 | chain->status = FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR; |
| 980 | return 0; |
| 981 | } |
| 982 | node->data = padding; |
| 983 | chain_append_node_(chain, node); |
| 984 | current_length = chain_calculate_length_(chain); |
| 985 | FLAC__ASSERT(current_length == chain->initial_length); |
| 986 | } |
| 987 | /* if the metadata grew but the last block is padding, try cutting the padding to restore the original length so we don't have to rewrite the whole file */ |
| 988 | else if(current_length > chain->initial_length) { |
| 989 | const unsigned delta = current_length - chain->initial_length; |
| 990 | if(chain->tail->data->type == FLAC__METADATA_TYPE_PADDING) { |
| 991 | /* if the delta is exactly the size of the last padding block, remove the padding block */ |
| 992 | if(chain->tail->data->length + FLAC__STREAM_METADATA_HEADER_LENGTH == delta) { |
| 993 | chain_delete_node_(chain, chain->tail); |
| 994 | current_length = chain_calculate_length_(chain); |
| 995 | FLAC__ASSERT(current_length == chain->initial_length); |
| 996 | } |
| 997 | /* if there is at least 'delta' bytes of padding, trim the padding down */ |
| 998 | else if(chain->tail->data->length >= delta) { |
| 999 | chain->tail->data->length -= delta; |
| 1000 | current_length -= delta; |
| 1001 | FLAC__ASSERT(current_length == chain->initial_length); |
| 1002 | } |
| 1003 | } |
| 1004 | } |
| 1005 | } |
| 1006 | |
| 1007 | return current_length; |
| 1008 | } |
| 1009 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1010 | static FLAC__bool chain_read_cb_(FLAC__Metadata_Chain *chain, FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOCallback_Seek seek_cb, FLAC__IOCallback_Tell tell_cb, FLAC__IOCallback_Close close_cb) |
| 1011 | { |
| 1012 | FLAC__Metadata_Node *node; |
| 1013 | |
| 1014 | FLAC__ASSERT(0 != chain); |
| 1015 | |
| 1016 | /* we assume we're already at the beginning of the file */ |
| 1017 | |
| 1018 | switch(seek_to_first_metadata_block_cb_(handle, read_cb, seek_cb)) { |
| 1019 | case 0: |
| 1020 | break; |
| 1021 | case 1: |
| 1022 | chain->status = FLAC__METADATA_CHAIN_STATUS_READ_ERROR; |
| 1023 | return false; |
| 1024 | case 2: |
| 1025 | chain->status = FLAC__METADATA_CHAIN_STATUS_SEEK_ERROR; |
| 1026 | return false; |
| 1027 | case 3: |
| 1028 | chain->status = FLAC__METADATA_CHAIN_STATUS_NOT_A_FLAC_FILE; |
| 1029 | return false; |
| 1030 | default: |
| 1031 | FLAC__ASSERT(0); |
| 1032 | return false; |
| 1033 | } |
| 1034 | |
| 1035 | { |
| 1036 | FLAC__int64 pos = tell_cb(handle); |
| 1037 | if(pos < 0) { |
| 1038 | chain->status = FLAC__METADATA_CHAIN_STATUS_READ_ERROR; |
| 1039 | return false; |
| 1040 | } |
| 1041 | chain->first_offset = (long)pos; |
| 1042 | } |
| 1043 | |
| 1044 | { |
| 1045 | FLAC__bool is_last; |
| 1046 | FLAC__MetadataType type; |
| 1047 | unsigned length; |
| 1048 | |
| 1049 | do { |
| 1050 | node = node_new_(); |
| 1051 | if(0 == node) { |
| 1052 | chain->status = FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR; |
| 1053 | return false; |
| 1054 | } |
| 1055 | |
| 1056 | if(!read_metadata_block_header_cb_(handle, read_cb, &is_last, &type, &length)) { |
| 1057 | chain->status = FLAC__METADATA_CHAIN_STATUS_READ_ERROR; |
| 1058 | return false; |
| 1059 | } |
| 1060 | |
| 1061 | node->data = FLAC__metadata_object_new(type); |
| 1062 | if(0 == node->data) { |
| 1063 | node_delete_(node); |
| 1064 | chain->status = FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR; |
| 1065 | return false; |
| 1066 | } |
| 1067 | |
| 1068 | node->data->is_last = is_last; |
| 1069 | node->data->length = length; |
| 1070 | |
| 1071 | chain->status = get_equivalent_status_(read_metadata_block_data_cb_(handle, read_cb, seek_cb, node->data)); |
| 1072 | if(chain->status != FLAC__METADATA_CHAIN_STATUS_OK) { |
| 1073 | node_delete_(node); |
| 1074 | return false; |
| 1075 | } |
| 1076 | chain_append_node_(chain, node); |
| 1077 | } while(!is_last); |
| 1078 | } |
| 1079 | |
| 1080 | { |
| 1081 | FLAC__int64 pos = tell_cb(handle); |
| 1082 | if(pos < 0) { |
| 1083 | chain->status = FLAC__METADATA_CHAIN_STATUS_READ_ERROR; |
| 1084 | return false; |
| 1085 | } |
| 1086 | chain->last_offset = (long)pos; |
| 1087 | } |
| 1088 | |
| 1089 | close_cb(handle); |
| 1090 | |
| 1091 | chain->initial_length = chain_calculate_length_(chain); |
| 1092 | |
| 1093 | return true; |
| 1094 | } |
| 1095 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 1096 | static FLAC__bool chain_rewrite_metadata_in_place_cb_(FLAC__Metadata_Chain *chain, FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, FLAC__IOCallback_Seek seek_cb, FLAC__IOCallback_Close close_cb) |
| 1097 | { |
| 1098 | FLAC__Metadata_Node *node; |
| 1099 | |
| 1100 | FLAC__ASSERT(0 != chain); |
| 1101 | FLAC__ASSERT(0 != chain->head); |
| 1102 | |
| 1103 | if(0 != seek_cb(handle, chain->first_offset, SEEK_SET)) { |
| 1104 | (void)close_cb(handle); |
| 1105 | chain->status = FLAC__METADATA_CHAIN_STATUS_SEEK_ERROR; |
| 1106 | return false; |
| 1107 | } |
| 1108 | |
| 1109 | for(node = chain->head; node; node = node->next) { |
| 1110 | if(!write_metadata_block_header_cb_(handle, write_cb, node->data)) { |
| 1111 | (void)close_cb(handle); |
| 1112 | chain->status = FLAC__METADATA_CHAIN_STATUS_WRITE_ERROR; |
| 1113 | return false; |
| 1114 | } |
| 1115 | if(!write_metadata_block_data_cb_(handle, write_cb, node->data)) { |
| 1116 | (void)close_cb(handle); |
| 1117 | chain->status = FLAC__METADATA_CHAIN_STATUS_WRITE_ERROR; |
| 1118 | return false; |
| 1119 | } |
| 1120 | } |
| 1121 | |
| 1122 | /*FLAC__ASSERT(fflush(), ftell() == chain->last_offset);*/ |
| 1123 | |
| 1124 | (void)close_cb(handle); |
| 1125 | |
| 1126 | chain->status = FLAC__METADATA_CHAIN_STATUS_OK; |
| 1127 | return true; |
| 1128 | } |
| 1129 | |
| 1130 | static FLAC__bool chain_rewrite_metadata_in_place_(FLAC__Metadata_Chain *chain) |
| 1131 | { |
| 1132 | FILE *file; |
| 1133 | |
| 1134 | FLAC__ASSERT(0 != chain->filename); |
| 1135 | |
| 1136 | if(0 == (file = fopen(chain->filename, "r+b"))) { |
| 1137 | chain->status = FLAC__METADATA_CHAIN_STATUS_ERROR_OPENING_FILE; |
| 1138 | return false; |
| 1139 | } |
| 1140 | |
| 1141 | /* chain_rewrite_metadata_in_place_cb_() sets chain->status and closes the file for us */ |
| 1142 | return chain_rewrite_metadata_in_place_cb_(chain, (FLAC__IOHandle)file, (FLAC__IOCallback_Write)fwrite, fseek_wrapper_, (FLAC__IOCallback_Close)fclose); |
| 1143 | } |
| 1144 | |
| 1145 | static FLAC__bool chain_rewrite_file_(FLAC__Metadata_Chain *chain, const char *tempfile_path_prefix) |
| 1146 | { |
| 1147 | FILE *f, *tempfile; |
| 1148 | char *tempfilename; |
| 1149 | FLAC__Metadata_SimpleIteratorStatus status; |
| 1150 | const FLAC__Metadata_Node *node; |
| 1151 | |
| 1152 | FLAC__ASSERT(0 != chain); |
| 1153 | FLAC__ASSERT(0 != chain->filename); |
| 1154 | FLAC__ASSERT(0 != chain->head); |
| 1155 | |
| 1156 | /* copy the file prefix (data up to first metadata block */ |
| 1157 | if(0 == (f = fopen(chain->filename, "rb"))) { |
| 1158 | chain->status = FLAC__METADATA_CHAIN_STATUS_ERROR_OPENING_FILE; |
| 1159 | return false; |
| 1160 | } |
| 1161 | if(!open_tempfile_(chain->filename, tempfile_path_prefix, &tempfile, &tempfilename, &status)) { |
| 1162 | chain->status = get_equivalent_status_(status); |
| 1163 | cleanup_tempfile_(&tempfile, &tempfilename); |
| 1164 | return false; |
| 1165 | } |
| 1166 | if(!copy_n_bytes_from_file_(f, tempfile, chain->first_offset, &status)) { |
| 1167 | chain->status = get_equivalent_status_(status); |
| 1168 | cleanup_tempfile_(&tempfile, &tempfilename); |
| 1169 | return false; |
| 1170 | } |
| 1171 | |
| 1172 | /* write the metadata */ |
| 1173 | for(node = chain->head; node; node = node->next) { |
| 1174 | if(!write_metadata_block_header_(tempfile, &status, node->data)) { |
| 1175 | chain->status = get_equivalent_status_(status); |
| 1176 | return false; |
| 1177 | } |
| 1178 | if(!write_metadata_block_data_(tempfile, &status, node->data)) { |
| 1179 | chain->status = get_equivalent_status_(status); |
| 1180 | return false; |
| 1181 | } |
| 1182 | } |
| 1183 | /*FLAC__ASSERT(fflush(), ftell() == chain->last_offset);*/ |
| 1184 | |
| 1185 | /* copy the file postfix (everything after the metadata) */ |
| 1186 | if(0 != fseek(f, chain->last_offset, SEEK_SET)) { |
| 1187 | cleanup_tempfile_(&tempfile, &tempfilename); |
| 1188 | chain->status = FLAC__METADATA_CHAIN_STATUS_SEEK_ERROR; |
| 1189 | return false; |
| 1190 | } |
| 1191 | if(!copy_remaining_bytes_from_file_(f, tempfile, &status)) { |
| 1192 | cleanup_tempfile_(&tempfile, &tempfilename); |
| 1193 | chain->status = get_equivalent_status_(status); |
| 1194 | return false; |
| 1195 | } |
| 1196 | |
| 1197 | /* move the tempfile on top of the original */ |
| 1198 | (void)fclose(f); |
| 1199 | if(!transport_tempfile_(chain->filename, &tempfile, &tempfilename, &status)) |
| 1200 | return false; |
| 1201 | |
| 1202 | return true; |
| 1203 | } |
| 1204 | |
| 1205 | static FLAC__bool chain_rewrite_file_cb_(FLAC__Metadata_Chain *chain, FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOCallback_Seek seek_cb, FLAC__IOCallback_Eof eof_cb, FLAC__IOCallback_Close close_cb, FLAC__IOHandle temp_handle, FLAC__IOCallback_Write temp_write_cb, FLAC__IOCallback_Close temp_close_cb) |
| 1206 | { |
| 1207 | FLAC__Metadata_SimpleIteratorStatus status; |
| 1208 | const FLAC__Metadata_Node *node; |
| 1209 | |
| 1210 | FLAC__ASSERT(0 != chain); |
| 1211 | FLAC__ASSERT(0 == chain->filename); |
| 1212 | FLAC__ASSERT(0 != chain->head); |
| 1213 | |
| 1214 | /* copy the file prefix (data up to first metadata block */ |
| 1215 | if(!copy_n_bytes_from_file_cb_(handle, read_cb, temp_handle, temp_write_cb, chain->first_offset, &status)) { |
| 1216 | (void)temp_close_cb(temp_handle); |
| 1217 | chain->status = get_equivalent_status_(status); |
| 1218 | return false; |
| 1219 | } |
| 1220 | |
| 1221 | /* write the metadata */ |
| 1222 | for(node = chain->head; node; node = node->next) { |
| 1223 | if(!write_metadata_block_header_cb_(temp_handle, temp_write_cb, node->data)) { |
| 1224 | (void)temp_close_cb(temp_handle); |
| 1225 | chain->status = FLAC__METADATA_CHAIN_STATUS_WRITE_ERROR; |
| 1226 | return false; |
| 1227 | } |
| 1228 | if(!write_metadata_block_data_cb_(temp_handle, temp_write_cb, node->data)) { |
| 1229 | (void)temp_close_cb(temp_handle); |
| 1230 | chain->status = FLAC__METADATA_CHAIN_STATUS_WRITE_ERROR; |
| 1231 | return false; |
| 1232 | } |
| 1233 | } |
| 1234 | /*FLAC__ASSERT(fflush(), ftell() == chain->last_offset);*/ |
| 1235 | |
| 1236 | /* copy the file postfix (everything after the metadata) */ |
| 1237 | if(0 != seek_cb(handle, chain->last_offset, SEEK_SET)) { |
| 1238 | (void)temp_close_cb(temp_handle); |
| 1239 | chain->status = FLAC__METADATA_CHAIN_STATUS_SEEK_ERROR; |
| 1240 | return false; |
| 1241 | } |
| 1242 | if(!copy_remaining_bytes_from_file_cb_(handle, read_cb, eof_cb, temp_handle, temp_write_cb, &status)) { |
| 1243 | (void)temp_close_cb(temp_handle); |
| 1244 | chain->status = get_equivalent_status_(status); |
| 1245 | return false; |
| 1246 | } |
| 1247 | |
| 1248 | (void)close_cb(handle); |
| 1249 | (void)temp_close_cb(temp_handle); |
| 1250 | |
| 1251 | return true; |
| 1252 | } |
| 1253 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 1254 | FLAC_API FLAC__Metadata_Chain *FLAC__metadata_chain_new() |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1255 | { |
Josh Coalson | 5e3fcb2 | 2002-11-06 07:11:26 +0000 | [diff] [blame] | 1256 | FLAC__Metadata_Chain *chain = (FLAC__Metadata_Chain*)calloc(1, sizeof(FLAC__Metadata_Chain)); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1257 | |
Josh Coalson | 91748be | 2004-07-10 22:28:03 +0000 | [diff] [blame] | 1258 | if(0 != chain) |
| 1259 | chain_init_(chain); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1260 | |
| 1261 | return chain; |
| 1262 | } |
| 1263 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 1264 | FLAC_API void FLAC__metadata_chain_delete(FLAC__Metadata_Chain *chain) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1265 | { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1266 | FLAC__ASSERT(0 != chain); |
| 1267 | |
Josh Coalson | 91748be | 2004-07-10 22:28:03 +0000 | [diff] [blame] | 1268 | chain_clear_(chain); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1269 | |
| 1270 | free(chain); |
| 1271 | } |
| 1272 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 1273 | FLAC_API FLAC__Metadata_ChainStatus FLAC__metadata_chain_status(FLAC__Metadata_Chain *chain) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1274 | { |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 1275 | FLAC__Metadata_ChainStatus status; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1276 | |
| 1277 | FLAC__ASSERT(0 != chain); |
| 1278 | |
| 1279 | status = chain->status; |
| 1280 | chain->status = FLAC__METADATA_CHAIN_STATUS_OK; |
| 1281 | return status; |
| 1282 | } |
| 1283 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 1284 | FLAC_API FLAC__bool FLAC__metadata_chain_read(FLAC__Metadata_Chain *chain, const char *filename) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1285 | { |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1286 | FILE *file; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1287 | |
| 1288 | FLAC__ASSERT(0 != chain); |
| 1289 | FLAC__ASSERT(0 != filename); |
| 1290 | |
Josh Coalson | 91748be | 2004-07-10 22:28:03 +0000 | [diff] [blame] | 1291 | chain_clear_(chain); |
| 1292 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1293 | if(0 == (chain->filename = strdup(filename))) { |
| 1294 | chain->status = FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR; |
| 1295 | return false; |
| 1296 | } |
| 1297 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1298 | if(0 == (file = fopen(filename, "rb"))) { |
| 1299 | chain->status = FLAC__METADATA_CHAIN_STATUS_ERROR_OPENING_FILE; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1300 | return false; |
| 1301 | } |
| 1302 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1303 | if(!chain_read_cb_(chain, file, (FLAC__IOCallback_Read)fread, fseek_wrapper_, ftell_wrapper_, (FLAC__IOCallback_Close)fclose)) |
| 1304 | return false; /* chain->status is already set by chain_read_cb_ */ |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1305 | |
Josh Coalson | 91748be | 2004-07-10 22:28:03 +0000 | [diff] [blame] | 1306 | /* chain_read_cb_() closes the file handle */ |
| 1307 | |
| 1308 | return true; |
| 1309 | } |
| 1310 | |
| 1311 | FLAC_API FLAC__bool FLAC__metadata_chain_read_with_callbacks(FLAC__Metadata_Chain *chain, FLAC__IOHandle handle, FLAC__IOCallbacks callbacks) |
| 1312 | { |
Josh Coalson | 91748be | 2004-07-10 22:28:03 +0000 | [diff] [blame] | 1313 | FLAC__ASSERT(0 != chain); |
| 1314 | |
| 1315 | chain_clear_(chain); |
| 1316 | |
| 1317 | if (0 == callbacks.read || 0 == callbacks.seek || 0 == callbacks.tell || 0 == callbacks.close) { |
| 1318 | chain->status = FLAC__METADATA_CHAIN_STATUS_INVALID_CALLBACKS; |
| 1319 | return false; |
| 1320 | } |
| 1321 | |
| 1322 | if(!chain_read_cb_(chain, handle, callbacks.read, callbacks.seek, callbacks.tell, callbacks.close)) |
| 1323 | return false; /* chain->status is already set by chain_read_cb_ */ |
| 1324 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1325 | return true; |
| 1326 | } |
| 1327 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 1328 | FLAC_API FLAC__bool FLAC__metadata_chain_check_if_tempfile_needed(FLAC__Metadata_Chain *chain, FLAC__bool use_padding) |
| 1329 | { |
| 1330 | /* This does all the same checks that are in chain_prepare_for_write_() |
| 1331 | * but doesn't actually alter the chain. Make sure to update the logic |
| 1332 | * here if chain_prepare_for_write_() changes. |
| 1333 | */ |
| 1334 | const unsigned current_length = chain_calculate_length_(chain); |
| 1335 | |
| 1336 | FLAC__ASSERT(0 != chain); |
| 1337 | |
| 1338 | if(use_padding) { |
| 1339 | /* if the metadata shrank and the last block is padding, we just extend the last padding block */ |
| 1340 | if(current_length < chain->initial_length && chain->tail->data->type == FLAC__METADATA_TYPE_PADDING) |
| 1341 | return false; |
| 1342 | /* if the metadata shrank more than 4 bytes then there's room to add another padding block */ |
| 1343 | else if(current_length + FLAC__STREAM_METADATA_HEADER_LENGTH <= chain->initial_length) |
| 1344 | return false; |
| 1345 | /* if the metadata grew but the last block is padding, try cutting the padding to restore the original length so we don't have to rewrite the whole file */ |
| 1346 | else if(current_length > chain->initial_length) { |
| 1347 | const unsigned delta = current_length - chain->initial_length; |
| 1348 | if(chain->tail->data->type == FLAC__METADATA_TYPE_PADDING) { |
| 1349 | /* if the delta is exactly the size of the last padding block, remove the padding block */ |
| 1350 | if(chain->tail->data->length + FLAC__STREAM_METADATA_HEADER_LENGTH == delta) |
| 1351 | return false; |
| 1352 | /* if there is at least 'delta' bytes of padding, trim the padding down */ |
| 1353 | else if(chain->tail->data->length >= delta) |
| 1354 | return false; |
| 1355 | } |
| 1356 | } |
| 1357 | } |
| 1358 | |
Josh Coalson | 028d97e | 2004-07-14 00:49:56 +0000 | [diff] [blame^] | 1359 | return (current_length != chain->initial_length); |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 1360 | } |
| 1361 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 1362 | FLAC_API FLAC__bool FLAC__metadata_chain_write(FLAC__Metadata_Chain *chain, FLAC__bool use_padding, FLAC__bool preserve_file_stats) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1363 | { |
| 1364 | struct stat stats; |
| 1365 | const char *tempfile_path_prefix = 0; |
Josh Coalson | 3ecb117 | 2002-06-15 05:09:47 +0000 | [diff] [blame] | 1366 | unsigned current_length; |
| 1367 | |
| 1368 | FLAC__ASSERT(0 != chain); |
| 1369 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 1370 | if (0 == chain->filename) { |
| 1371 | chain->status = FLAC__METADATA_CHAIN_STATUS_READ_WRITE_MISMATCH; |
| 1372 | return false; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1373 | } |
| 1374 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 1375 | current_length = chain_prepare_for_write_(chain, use_padding); |
| 1376 | |
| 1377 | /* a return value of 0 means there was an error; chain->status is already set */ |
| 1378 | if (0 == current_length) |
| 1379 | return false; |
| 1380 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1381 | if(preserve_file_stats) |
| 1382 | get_file_stats_(chain->filename, &stats); |
| 1383 | |
Josh Coalson | 3ecb117 | 2002-06-15 05:09:47 +0000 | [diff] [blame] | 1384 | if(current_length == chain->initial_length) { |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 1385 | if(!chain_rewrite_metadata_in_place_(chain)) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1386 | return false; |
| 1387 | } |
| 1388 | else { |
| 1389 | if(!chain_rewrite_file_(chain, tempfile_path_prefix)) |
| 1390 | return false; |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 1391 | |
| 1392 | /* recompute lengths and offsets */ |
| 1393 | { |
| 1394 | const FLAC__Metadata_Node *node; |
| 1395 | chain->initial_length = current_length; |
| 1396 | chain->last_offset = chain->first_offset; |
| 1397 | for(node = chain->head; node; node = node->next) |
| 1398 | chain->last_offset += (FLAC__STREAM_METADATA_HEADER_LENGTH + node->data->length); |
| 1399 | } |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1400 | } |
| 1401 | |
| 1402 | if(preserve_file_stats) |
| 1403 | set_file_stats_(chain->filename, &stats); |
| 1404 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 1405 | return true; |
| 1406 | } |
| 1407 | |
| 1408 | FLAC_API FLAC__bool FLAC__metadata_chain_write_with_callbacks(FLAC__Metadata_Chain *chain, FLAC__bool use_padding, FLAC__IOHandle handle, FLAC__IOCallbacks callbacks) |
| 1409 | { |
| 1410 | unsigned current_length; |
| 1411 | |
| 1412 | FLAC__ASSERT(0 != chain); |
| 1413 | |
| 1414 | if (0 != chain->filename) { |
| 1415 | chain->status = FLAC__METADATA_CHAIN_STATUS_READ_WRITE_MISMATCH; |
| 1416 | return false; |
| 1417 | } |
| 1418 | |
| 1419 | if (0 == callbacks.write || 0 == callbacks.seek || 0 == callbacks.close) { |
| 1420 | chain->status = FLAC__METADATA_CHAIN_STATUS_INVALID_CALLBACKS; |
| 1421 | return false; |
| 1422 | } |
| 1423 | |
| 1424 | if (FLAC__metadata_chain_check_if_tempfile_needed(chain, use_padding)) { |
| 1425 | chain->status = FLAC__METADATA_CHAIN_STATUS_WRONG_WRITE_CALL; |
| 1426 | return false; |
| 1427 | } |
| 1428 | |
| 1429 | current_length = chain_prepare_for_write_(chain, use_padding); |
| 1430 | |
| 1431 | /* a return value of 0 means there was an error; chain->status is already set */ |
| 1432 | if (0 == current_length) |
| 1433 | return false; |
| 1434 | |
| 1435 | FLAC__ASSERT(current_length == chain->initial_length); |
| 1436 | |
| 1437 | if(!chain_rewrite_metadata_in_place_cb_(chain, handle, callbacks.write, callbacks.seek, callbacks.close)) |
| 1438 | return false; |
| 1439 | |
| 1440 | return true; |
| 1441 | } |
| 1442 | |
| 1443 | FLAC_API FLAC__bool FLAC__metadata_chain_write_with_callbacks_and_tempfile(FLAC__Metadata_Chain *chain, FLAC__bool use_padding, FLAC__IOHandle handle, FLAC__IOCallbacks callbacks, FLAC__IOHandle temp_handle, FLAC__IOCallbacks temp_callbacks) |
| 1444 | { |
| 1445 | unsigned current_length; |
| 1446 | |
| 1447 | FLAC__ASSERT(0 != chain); |
| 1448 | |
| 1449 | if (0 != chain->filename) { |
| 1450 | chain->status = FLAC__METADATA_CHAIN_STATUS_READ_WRITE_MISMATCH; |
| 1451 | return false; |
| 1452 | } |
| 1453 | |
| 1454 | if (0 == callbacks.read || 0 == callbacks.seek || 0 == callbacks.eof || 0 == callbacks.close) { |
| 1455 | chain->status = FLAC__METADATA_CHAIN_STATUS_INVALID_CALLBACKS; |
| 1456 | return false; |
| 1457 | } |
| 1458 | if (0 == temp_callbacks.write || 0 == callbacks.close) { |
| 1459 | chain->status = FLAC__METADATA_CHAIN_STATUS_INVALID_CALLBACKS; |
| 1460 | return false; |
| 1461 | } |
| 1462 | |
| 1463 | if (!FLAC__metadata_chain_check_if_tempfile_needed(chain, use_padding)) { |
| 1464 | chain->status = FLAC__METADATA_CHAIN_STATUS_WRONG_WRITE_CALL; |
| 1465 | return false; |
| 1466 | } |
| 1467 | |
| 1468 | current_length = chain_prepare_for_write_(chain, use_padding); |
| 1469 | |
| 1470 | /* a return value of 0 means there was an error; chain->status is already set */ |
| 1471 | if (0 == current_length) |
| 1472 | return false; |
| 1473 | |
| 1474 | FLAC__ASSERT(current_length != chain->initial_length); |
| 1475 | |
| 1476 | if(!chain_rewrite_file_cb_(chain, handle, callbacks.read, callbacks.seek, callbacks.eof, callbacks.close, temp_handle, temp_callbacks.write, temp_callbacks.close)) |
| 1477 | return false; |
| 1478 | |
| 1479 | /* recompute lengths and offsets */ |
| 1480 | { |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 1481 | const FLAC__Metadata_Node *node; |
Josh Coalson | 3ecb117 | 2002-06-15 05:09:47 +0000 | [diff] [blame] | 1482 | chain->initial_length = current_length; |
Josh Coalson | e2ba10f | 2002-05-14 06:03:17 +0000 | [diff] [blame] | 1483 | chain->last_offset = chain->first_offset; |
| 1484 | for(node = chain->head; node; node = node->next) |
Josh Coalson | eb643a2 | 2002-05-20 05:58:50 +0000 | [diff] [blame] | 1485 | chain->last_offset += (FLAC__STREAM_METADATA_HEADER_LENGTH + node->data->length); |
Josh Coalson | e2ba10f | 2002-05-14 06:03:17 +0000 | [diff] [blame] | 1486 | } |
| 1487 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1488 | return true; |
| 1489 | } |
| 1490 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 1491 | FLAC_API void FLAC__metadata_chain_merge_padding(FLAC__Metadata_Chain *chain) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1492 | { |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 1493 | FLAC__Metadata_Node *node; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1494 | |
| 1495 | FLAC__ASSERT(0 != chain); |
| 1496 | |
| 1497 | for(node = chain->head; node; ) { |
Josh Coalson | 2745fe7 | 2002-05-11 05:31:56 +0000 | [diff] [blame] | 1498 | if(!chain_merge_adjacent_padding_(chain, node)) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1499 | node = node->next; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1500 | } |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1501 | } |
| 1502 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 1503 | FLAC_API void FLAC__metadata_chain_sort_padding(FLAC__Metadata_Chain *chain) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1504 | { |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 1505 | FLAC__Metadata_Node *node, *save; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1506 | unsigned i; |
| 1507 | |
| 1508 | FLAC__ASSERT(0 != chain); |
| 1509 | |
| 1510 | /* |
| 1511 | * Don't try and be too smart... this simple algo is good enough for |
| 1512 | * the small number of nodes that we deal with. |
| 1513 | */ |
| 1514 | for(i = 0, node = chain->head; i < chain->nodes; i++) { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1515 | if(node->data->type == FLAC__METADATA_TYPE_PADDING) { |
| 1516 | save = node->next; |
| 1517 | chain_remove_node_(chain, node); |
| 1518 | chain_append_node_(chain, node); |
| 1519 | node = save; |
| 1520 | } |
| 1521 | else { |
| 1522 | node = node->next; |
| 1523 | } |
| 1524 | } |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1525 | |
| 1526 | FLAC__metadata_chain_merge_padding(chain); |
| 1527 | } |
| 1528 | |
| 1529 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 1530 | FLAC_API FLAC__Metadata_Iterator *FLAC__metadata_iterator_new() |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1531 | { |
Josh Coalson | 5e3fcb2 | 2002-11-06 07:11:26 +0000 | [diff] [blame] | 1532 | FLAC__Metadata_Iterator *iterator = (FLAC__Metadata_Iterator*)calloc(1, sizeof(FLAC__Metadata_Iterator)); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1533 | |
Josh Coalson | ea7155f | 2002-10-18 05:49:19 +0000 | [diff] [blame] | 1534 | /* calloc() implies: |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1535 | iterator->current = 0; |
| 1536 | iterator->chain = 0; |
Josh Coalson | ea7155f | 2002-10-18 05:49:19 +0000 | [diff] [blame] | 1537 | */ |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1538 | |
| 1539 | return iterator; |
| 1540 | } |
| 1541 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 1542 | FLAC_API void FLAC__metadata_iterator_delete(FLAC__Metadata_Iterator *iterator) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1543 | { |
| 1544 | FLAC__ASSERT(0 != iterator); |
| 1545 | |
| 1546 | free(iterator); |
| 1547 | } |
| 1548 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 1549 | FLAC_API void FLAC__metadata_iterator_init(FLAC__Metadata_Iterator *iterator, FLAC__Metadata_Chain *chain) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1550 | { |
| 1551 | FLAC__ASSERT(0 != iterator); |
| 1552 | FLAC__ASSERT(0 != chain); |
| 1553 | FLAC__ASSERT(0 != chain->head); |
| 1554 | |
| 1555 | iterator->chain = chain; |
| 1556 | iterator->current = chain->head; |
| 1557 | } |
| 1558 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 1559 | FLAC_API FLAC__bool FLAC__metadata_iterator_next(FLAC__Metadata_Iterator *iterator) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1560 | { |
| 1561 | FLAC__ASSERT(0 != iterator); |
| 1562 | |
| 1563 | if(0 == iterator->current || 0 == iterator->current->next) |
| 1564 | return false; |
| 1565 | |
| 1566 | iterator->current = iterator->current->next; |
| 1567 | return true; |
| 1568 | } |
| 1569 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 1570 | FLAC_API FLAC__bool FLAC__metadata_iterator_prev(FLAC__Metadata_Iterator *iterator) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1571 | { |
| 1572 | FLAC__ASSERT(0 != iterator); |
| 1573 | |
| 1574 | if(0 == iterator->current || 0 == iterator->current->prev) |
| 1575 | return false; |
| 1576 | |
| 1577 | iterator->current = iterator->current->prev; |
| 1578 | return true; |
| 1579 | } |
| 1580 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 1581 | FLAC_API FLAC__MetadataType FLAC__metadata_iterator_get_block_type(const FLAC__Metadata_Iterator *iterator) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1582 | { |
| 1583 | FLAC__ASSERT(0 != iterator); |
| 1584 | FLAC__ASSERT(0 != iterator->current); |
Josh Coalson | 2745fe7 | 2002-05-11 05:31:56 +0000 | [diff] [blame] | 1585 | FLAC__ASSERT(0 != iterator->current->data); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1586 | |
| 1587 | return iterator->current->data->type; |
| 1588 | } |
| 1589 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 1590 | FLAC_API FLAC__StreamMetadata *FLAC__metadata_iterator_get_block(FLAC__Metadata_Iterator *iterator) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1591 | { |
| 1592 | FLAC__ASSERT(0 != iterator); |
| 1593 | FLAC__ASSERT(0 != iterator->current); |
| 1594 | |
| 1595 | return iterator->current->data; |
| 1596 | } |
| 1597 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 1598 | FLAC_API FLAC__bool FLAC__metadata_iterator_set_block(FLAC__Metadata_Iterator *iterator, FLAC__StreamMetadata *block) |
Josh Coalson | 2745fe7 | 2002-05-11 05:31:56 +0000 | [diff] [blame] | 1599 | { |
Josh Coalson | 9b86c96 | 2002-07-10 07:11:15 +0000 | [diff] [blame] | 1600 | FLAC__ASSERT(0 != iterator); |
| 1601 | FLAC__ASSERT(0 != block); |
Josh Coalson | 2745fe7 | 2002-05-11 05:31:56 +0000 | [diff] [blame] | 1602 | return FLAC__metadata_iterator_delete_block(iterator, false) && FLAC__metadata_iterator_insert_block_after(iterator, block); |
| 1603 | } |
| 1604 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 1605 | FLAC_API FLAC__bool FLAC__metadata_iterator_delete_block(FLAC__Metadata_Iterator *iterator, FLAC__bool replace_with_padding) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1606 | { |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 1607 | FLAC__Metadata_Node *save; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1608 | |
| 1609 | FLAC__ASSERT(0 != iterator); |
| 1610 | FLAC__ASSERT(0 != iterator->current); |
| 1611 | |
| 1612 | if(0 == iterator->current->prev) { |
| 1613 | FLAC__ASSERT(iterator->current->data->type == FLAC__METADATA_TYPE_STREAMINFO); |
| 1614 | return false; |
| 1615 | } |
| 1616 | |
| 1617 | save = iterator->current->prev; |
| 1618 | |
| 1619 | if(replace_with_padding) { |
Josh Coalson | 90ced91 | 2002-05-30 05:23:38 +0000 | [diff] [blame] | 1620 | FLAC__metadata_object_delete_data(iterator->current->data); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1621 | iterator->current->data->type = FLAC__METADATA_TYPE_PADDING; |
| 1622 | } |
| 1623 | else { |
| 1624 | chain_delete_node_(iterator->chain, iterator->current); |
| 1625 | } |
| 1626 | |
| 1627 | iterator->current = save; |
| 1628 | return true; |
| 1629 | } |
| 1630 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 1631 | FLAC_API FLAC__bool FLAC__metadata_iterator_insert_block_before(FLAC__Metadata_Iterator *iterator, FLAC__StreamMetadata *block) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1632 | { |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 1633 | FLAC__Metadata_Node *node; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1634 | |
| 1635 | FLAC__ASSERT(0 != iterator); |
| 1636 | FLAC__ASSERT(0 != iterator->current); |
Josh Coalson | 9b86c96 | 2002-07-10 07:11:15 +0000 | [diff] [blame] | 1637 | FLAC__ASSERT(0 != block); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1638 | |
| 1639 | if(block->type == FLAC__METADATA_TYPE_STREAMINFO) |
| 1640 | return false; |
| 1641 | |
| 1642 | if(0 == iterator->current->prev) { |
| 1643 | FLAC__ASSERT(iterator->current->data->type == FLAC__METADATA_TYPE_STREAMINFO); |
| 1644 | return false; |
| 1645 | } |
| 1646 | |
| 1647 | if(0 == (node = node_new_())) |
| 1648 | return false; |
| 1649 | |
| 1650 | node->data = block; |
| 1651 | iterator_insert_node_(iterator, node); |
| 1652 | iterator->current = node; |
| 1653 | return true; |
| 1654 | } |
| 1655 | |
Josh Coalson | 6afed9f | 2002-10-16 22:29:47 +0000 | [diff] [blame] | 1656 | FLAC_API FLAC__bool FLAC__metadata_iterator_insert_block_after(FLAC__Metadata_Iterator *iterator, FLAC__StreamMetadata *block) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1657 | { |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 1658 | FLAC__Metadata_Node *node; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1659 | |
| 1660 | FLAC__ASSERT(0 != iterator); |
| 1661 | FLAC__ASSERT(0 != iterator->current); |
Josh Coalson | 9b86c96 | 2002-07-10 07:11:15 +0000 | [diff] [blame] | 1662 | FLAC__ASSERT(0 != block); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1663 | |
| 1664 | if(block->type == FLAC__METADATA_TYPE_STREAMINFO) |
| 1665 | return false; |
| 1666 | |
| 1667 | if(0 == (node = node_new_())) |
| 1668 | return false; |
| 1669 | |
| 1670 | node->data = block; |
| 1671 | iterator_insert_node_after_(iterator, node); |
| 1672 | iterator->current = node; |
| 1673 | return true; |
| 1674 | } |
| 1675 | |
| 1676 | |
| 1677 | /**************************************************************************** |
| 1678 | * |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1679 | * Local function definitions |
| 1680 | * |
| 1681 | ***************************************************************************/ |
| 1682 | |
| 1683 | void pack_uint32_(FLAC__uint32 val, FLAC__byte *b, unsigned bytes) |
| 1684 | { |
| 1685 | unsigned i; |
| 1686 | |
| 1687 | b += bytes; |
| 1688 | |
| 1689 | for(i = 0; i < bytes; i++) { |
Josh Coalson | eb643a2 | 2002-05-20 05:58:50 +0000 | [diff] [blame] | 1690 | *(--b) = (FLAC__byte)(val & 0xff); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1691 | val >>= 8; |
| 1692 | } |
| 1693 | } |
| 1694 | |
| 1695 | void pack_uint32_little_endian_(FLAC__uint32 val, FLAC__byte *b, unsigned bytes) |
| 1696 | { |
| 1697 | unsigned i; |
| 1698 | |
| 1699 | for(i = 0; i < bytes; i++) { |
Josh Coalson | eb643a2 | 2002-05-20 05:58:50 +0000 | [diff] [blame] | 1700 | *(b++) = (FLAC__byte)(val & 0xff); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1701 | val >>= 8; |
| 1702 | } |
| 1703 | } |
| 1704 | |
| 1705 | void pack_uint64_(FLAC__uint64 val, FLAC__byte *b, unsigned bytes) |
| 1706 | { |
| 1707 | unsigned i; |
| 1708 | |
| 1709 | b += bytes; |
| 1710 | |
| 1711 | for(i = 0; i < bytes; i++) { |
Josh Coalson | 7294309 | 2002-05-22 05:35:43 +0000 | [diff] [blame] | 1712 | *(--b) = (FLAC__byte)(val & 0xff); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1713 | val >>= 8; |
| 1714 | } |
| 1715 | } |
| 1716 | |
| 1717 | FLAC__uint32 unpack_uint32_(FLAC__byte *b, unsigned bytes) |
| 1718 | { |
| 1719 | FLAC__uint32 ret = 0; |
| 1720 | unsigned i; |
| 1721 | |
| 1722 | for(i = 0; i < bytes; i++) |
| 1723 | ret = (ret << 8) | (FLAC__uint32)(*b++); |
| 1724 | |
| 1725 | return ret; |
| 1726 | } |
| 1727 | |
| 1728 | FLAC__uint32 unpack_uint32_little_endian_(FLAC__byte *b, unsigned bytes) |
| 1729 | { |
| 1730 | FLAC__uint32 ret = 0; |
| 1731 | unsigned i; |
| 1732 | |
| 1733 | b += bytes; |
| 1734 | |
| 1735 | for(i = 0; i < bytes; i++) |
| 1736 | ret = (ret << 8) | (FLAC__uint32)(*--b); |
| 1737 | |
| 1738 | return ret; |
| 1739 | } |
| 1740 | |
| 1741 | FLAC__uint64 unpack_uint64_(FLAC__byte *b, unsigned bytes) |
| 1742 | { |
| 1743 | FLAC__uint64 ret = 0; |
| 1744 | unsigned i; |
| 1745 | |
| 1746 | for(i = 0; i < bytes; i++) |
| 1747 | ret = (ret << 8) | (FLAC__uint64)(*b++); |
| 1748 | |
| 1749 | return ret; |
| 1750 | } |
| 1751 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 1752 | FLAC__bool read_metadata_block_header_(FLAC__Metadata_SimpleIterator *iterator) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1753 | { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1754 | FLAC__ASSERT(0 != iterator); |
| 1755 | FLAC__ASSERT(0 != iterator->file); |
| 1756 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1757 | if(!read_metadata_block_header_cb_((FLAC__IOHandle)iterator->file, (FLAC__IOCallback_Read)fread, &iterator->is_last, &iterator->type, &iterator->length)) { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1758 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 1759 | return false; |
| 1760 | } |
| 1761 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1762 | return true; |
| 1763 | } |
| 1764 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 1765 | FLAC__bool read_metadata_block_data_(FLAC__Metadata_SimpleIterator *iterator, FLAC__StreamMetadata *block) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1766 | { |
| 1767 | FLAC__ASSERT(0 != iterator); |
| 1768 | FLAC__ASSERT(0 != iterator->file); |
| 1769 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1770 | iterator->status = read_metadata_block_data_cb_((FLAC__IOHandle)iterator->file, (FLAC__IOCallback_Read)fread, fseek_wrapper_, block); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1771 | |
| 1772 | return (iterator->status == FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK); |
| 1773 | } |
| 1774 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1775 | FLAC__bool read_metadata_block_header_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__bool *is_last, FLAC__MetadataType *type, unsigned *length) |
| 1776 | { |
| 1777 | FLAC__byte raw_header[FLAC__STREAM_METADATA_HEADER_LENGTH]; |
| 1778 | |
| 1779 | if(read_cb(raw_header, 1, FLAC__STREAM_METADATA_HEADER_LENGTH, handle) != FLAC__STREAM_METADATA_HEADER_LENGTH) |
| 1780 | return false; |
| 1781 | |
| 1782 | *is_last = raw_header[0] & 0x80? true : false; |
| 1783 | *type = (FLAC__MetadataType)(raw_header[0] & 0x7f); |
| 1784 | *length = unpack_uint32_(raw_header + 1, 3); |
| 1785 | |
| 1786 | /* Note that we don't check: |
| 1787 | * if(iterator->type >= FLAC__METADATA_TYPE_UNDEFINED) |
| 1788 | * we just will read in an opaque block |
| 1789 | */ |
| 1790 | |
| 1791 | return true; |
| 1792 | } |
| 1793 | |
| 1794 | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOCallback_Seek seek_cb, FLAC__StreamMetadata *block) |
| 1795 | { |
| 1796 | switch(block->type) { |
| 1797 | case FLAC__METADATA_TYPE_STREAMINFO: |
| 1798 | return read_metadata_block_data_streaminfo_cb_(handle, read_cb, &block->data.stream_info); |
| 1799 | case FLAC__METADATA_TYPE_PADDING: |
| 1800 | return read_metadata_block_data_padding_cb_(handle, seek_cb, &block->data.padding, block->length); |
| 1801 | case FLAC__METADATA_TYPE_APPLICATION: |
| 1802 | return read_metadata_block_data_application_cb_(handle, read_cb, &block->data.application, block->length); |
| 1803 | case FLAC__METADATA_TYPE_SEEKTABLE: |
| 1804 | return read_metadata_block_data_seektable_cb_(handle, read_cb, &block->data.seek_table, block->length); |
| 1805 | case FLAC__METADATA_TYPE_VORBIS_COMMENT: |
| 1806 | return read_metadata_block_data_vorbis_comment_cb_(handle, read_cb, &block->data.vorbis_comment); |
| 1807 | case FLAC__METADATA_TYPE_CUESHEET: |
| 1808 | return read_metadata_block_data_cuesheet_cb_(handle, read_cb, &block->data.cue_sheet); |
| 1809 | default: |
| 1810 | return read_metadata_block_data_unknown_cb_(handle, read_cb, &block->data.unknown, block->length); |
| 1811 | } |
| 1812 | } |
| 1813 | |
| 1814 | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_streaminfo_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_StreamInfo *block) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1815 | { |
| 1816 | FLAC__byte buffer[FLAC__STREAM_METADATA_STREAMINFO_LENGTH], *b; |
| 1817 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1818 | if(read_cb(buffer, 1, FLAC__STREAM_METADATA_STREAMINFO_LENGTH, handle) != FLAC__STREAM_METADATA_STREAMINFO_LENGTH) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1819 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 1820 | |
| 1821 | b = buffer; |
| 1822 | |
Josh Coalson | f0a8c4f | 2003-01-15 03:17:51 +0000 | [diff] [blame] | 1823 | /* we are using hardcoded numbers for simplicity but we should |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1824 | * probably eventually write a bit-level unpacker and use the |
| 1825 | * _STREAMINFO_ constants. |
| 1826 | */ |
| 1827 | block->min_blocksize = unpack_uint32_(b, 2); b += 2; |
| 1828 | block->max_blocksize = unpack_uint32_(b, 2); b += 2; |
| 1829 | block->min_framesize = unpack_uint32_(b, 3); b += 3; |
| 1830 | block->max_framesize = unpack_uint32_(b, 3); b += 3; |
| 1831 | block->sample_rate = (unpack_uint32_(b, 2) << 4) | ((unsigned)(b[2] & 0xf0) >> 4); |
| 1832 | block->channels = (unsigned)((b[2] & 0x0e) >> 1) + 1; |
Josh Coalson | b4e186a | 2002-08-12 21:35:43 +0000 | [diff] [blame] | 1833 | block->bits_per_sample = ((((unsigned)(b[2] & 0x01)) << 4) | (((unsigned)(b[3] & 0xf0)) >> 4)) + 1; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1834 | block->total_samples = (((FLAC__uint64)(b[3] & 0x0f)) << 32) | unpack_uint64_(b+4, 4); |
| 1835 | memcpy(block->md5sum, b+8, 16); |
| 1836 | |
| 1837 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
| 1838 | } |
| 1839 | |
| 1840 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1841 | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_padding_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Seek seek_cb, FLAC__StreamMetadata_Padding *block, unsigned block_length) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1842 | { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1843 | (void)block; /* nothing to do; we don't care about reading the padding bytes */ |
| 1844 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1845 | if(0 != seek_cb(handle, block_length, SEEK_CUR)) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1846 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
| 1847 | |
| 1848 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
| 1849 | } |
| 1850 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1851 | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_application_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_Application *block, unsigned block_length) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1852 | { |
| 1853 | const unsigned id_bytes = FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8; |
| 1854 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1855 | if(read_cb(block->id, 1, id_bytes, handle) != id_bytes) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1856 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 1857 | |
| 1858 | block_length -= id_bytes; |
| 1859 | |
Josh Coalson | 7294309 | 2002-05-22 05:35:43 +0000 | [diff] [blame] | 1860 | if(block_length == 0) { |
| 1861 | block->data = 0; |
| 1862 | } |
| 1863 | else { |
Josh Coalson | 5e3fcb2 | 2002-11-06 07:11:26 +0000 | [diff] [blame] | 1864 | if(0 == (block->data = (FLAC__byte*)malloc(block_length))) |
Josh Coalson | 7294309 | 2002-05-22 05:35:43 +0000 | [diff] [blame] | 1865 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1866 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1867 | if(read_cb(block->data, 1, block_length, handle) != block_length) |
Josh Coalson | 7294309 | 2002-05-22 05:35:43 +0000 | [diff] [blame] | 1868 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 1869 | } |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1870 | |
| 1871 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
| 1872 | } |
| 1873 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1874 | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_seektable_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_SeekTable *block, unsigned block_length) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1875 | { |
| 1876 | unsigned i; |
| 1877 | FLAC__byte buffer[FLAC__STREAM_METADATA_SEEKPOINT_LENGTH]; |
| 1878 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1879 | FLAC__ASSERT(block_length % FLAC__STREAM_METADATA_SEEKPOINT_LENGTH == 0); |
| 1880 | |
| 1881 | block->num_points = block_length / FLAC__STREAM_METADATA_SEEKPOINT_LENGTH; |
| 1882 | |
Josh Coalson | 7294309 | 2002-05-22 05:35:43 +0000 | [diff] [blame] | 1883 | if(block->num_points == 0) |
| 1884 | block->points = 0; |
Josh Coalson | 5e3fcb2 | 2002-11-06 07:11:26 +0000 | [diff] [blame] | 1885 | else if(0 == (block->points = (FLAC__StreamMetadata_SeekPoint*)malloc(block->num_points * sizeof(FLAC__StreamMetadata_SeekPoint)))) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1886 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
| 1887 | |
| 1888 | for(i = 0; i < block->num_points; i++) { |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1889 | if(read_cb(buffer, 1, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH, handle) != FLAC__STREAM_METADATA_SEEKPOINT_LENGTH) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1890 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
Josh Coalson | f0a8c4f | 2003-01-15 03:17:51 +0000 | [diff] [blame] | 1891 | /* some MAGIC NUMBERs here */ |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1892 | block->points[i].sample_number = unpack_uint64_(buffer, 8); |
| 1893 | block->points[i].stream_offset = unpack_uint64_(buffer+8, 8); |
| 1894 | block->points[i].frame_samples = unpack_uint32_(buffer+16, 2); |
| 1895 | } |
| 1896 | |
| 1897 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
| 1898 | } |
| 1899 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1900 | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_vorbis_comment_entry_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_VorbisComment_Entry *entry) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1901 | { |
| 1902 | const unsigned entry_length_len = FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN / 8; |
Josh Coalson | 7ee4d17 | 2002-06-01 06:31:27 +0000 | [diff] [blame] | 1903 | FLAC__byte buffer[4]; /* magic number is asserted below */ |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1904 | |
Josh Coalson | 7ee4d17 | 2002-06-01 06:31:27 +0000 | [diff] [blame] | 1905 | FLAC__ASSERT(FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN / 8 == 4); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1906 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1907 | if(read_cb(buffer, 1, entry_length_len, handle) != entry_length_len) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1908 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
Josh Coalson | eb643a2 | 2002-05-20 05:58:50 +0000 | [diff] [blame] | 1909 | entry->length = unpack_uint32_little_endian_(buffer, entry_length_len); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1910 | |
Josh Coalson | 6ffe8da | 2002-10-26 04:35:00 +0000 | [diff] [blame] | 1911 | if(0 != entry->entry) |
| 1912 | free(entry->entry); |
| 1913 | |
Josh Coalson | 7294309 | 2002-05-22 05:35:43 +0000 | [diff] [blame] | 1914 | if(entry->length == 0) { |
| 1915 | entry->entry = 0; |
| 1916 | } |
| 1917 | else { |
Josh Coalson | 5e3fcb2 | 2002-11-06 07:11:26 +0000 | [diff] [blame] | 1918 | if(0 == (entry->entry = (FLAC__byte*)malloc(entry->length))) |
Josh Coalson | 7294309 | 2002-05-22 05:35:43 +0000 | [diff] [blame] | 1919 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1920 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1921 | if(read_cb(entry->entry, 1, entry->length, handle) != entry->length) |
Josh Coalson | 7294309 | 2002-05-22 05:35:43 +0000 | [diff] [blame] | 1922 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 1923 | } |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1924 | |
| 1925 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
| 1926 | } |
| 1927 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1928 | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_vorbis_comment_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_VorbisComment *block) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1929 | { |
| 1930 | unsigned i; |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 1931 | FLAC__Metadata_SimpleIteratorStatus status; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1932 | const unsigned num_comments_len = FLAC__STREAM_METADATA_VORBIS_COMMENT_NUM_COMMENTS_LEN / 8; |
Josh Coalson | 7ee4d17 | 2002-06-01 06:31:27 +0000 | [diff] [blame] | 1933 | FLAC__byte buffer[4]; /* magic number is asserted below */ |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1934 | |
Josh Coalson | 7ee4d17 | 2002-06-01 06:31:27 +0000 | [diff] [blame] | 1935 | FLAC__ASSERT(FLAC__STREAM_METADATA_VORBIS_COMMENT_NUM_COMMENTS_LEN / 8 == 4); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1936 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1937 | if(FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK != (status = read_metadata_block_data_vorbis_comment_entry_cb_(handle, read_cb, &(block->vendor_string)))) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1938 | return status; |
| 1939 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1940 | if(read_cb(buffer, 1, num_comments_len, handle) != num_comments_len) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1941 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 1942 | block->num_comments = unpack_uint32_little_endian_(buffer, num_comments_len); |
| 1943 | |
Josh Coalson | 7294309 | 2002-05-22 05:35:43 +0000 | [diff] [blame] | 1944 | if(block->num_comments == 0) { |
| 1945 | block->comments = 0; |
| 1946 | } |
Josh Coalson | 38162d5 | 2002-11-16 06:31:54 +0000 | [diff] [blame] | 1947 | else if(0 == (block->comments = (FLAC__StreamMetadata_VorbisComment_Entry*)calloc(block->num_comments, sizeof(FLAC__StreamMetadata_VorbisComment_Entry)))) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1948 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
| 1949 | |
| 1950 | for(i = 0; i < block->num_comments; i++) { |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1951 | if(FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK != (status = read_metadata_block_data_vorbis_comment_entry_cb_(handle, read_cb, block->comments + i))) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 1952 | return status; |
| 1953 | } |
| 1954 | |
| 1955 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
| 1956 | } |
| 1957 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1958 | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_cuesheet_track_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_CueSheet_Track *track) |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 1959 | { |
| 1960 | unsigned i, len; |
| 1961 | FLAC__byte buffer[32]; /* asserted below that this is big enough */ |
| 1962 | |
| 1963 | FLAC__ASSERT(sizeof(buffer) >= sizeof(FLAC__uint64)); |
| 1964 | FLAC__ASSERT(sizeof(buffer) >= FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN/8); |
| 1965 | FLAC__ASSERT(sizeof(buffer) >= (FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN) / 8); |
| 1966 | |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 1967 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN % 8 == 0); |
| 1968 | len = FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN / 8; |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1969 | if(read_cb(buffer, 1, len, handle) != len) |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 1970 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 1971 | track->offset = unpack_uint64_(buffer, len); |
| 1972 | |
| 1973 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN % 8 == 0); |
| 1974 | len = FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN / 8; |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1975 | if(read_cb(buffer, 1, len, handle) != len) |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 1976 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 1977 | track->number = (FLAC__byte)unpack_uint32_(buffer, len); |
| 1978 | |
| 1979 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN % 8 == 0); |
| 1980 | len = FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN / 8; |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1981 | if(read_cb(track->isrc, 1, len, handle) != len) |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 1982 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 1983 | |
| 1984 | FLAC__ASSERT((FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN) % 8 == 0); |
| 1985 | len = (FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN) / 8; |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1986 | if(read_cb(buffer, 1, len, handle) != len) |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 1987 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 1988 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN == 1); |
| 1989 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN == 1); |
| 1990 | track->type = buffer[0] >> 7; |
| 1991 | track->pre_emphasis = (buffer[0] >> 6) & 1; |
| 1992 | |
| 1993 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN % 8 == 0); |
| 1994 | len = FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN / 8; |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 1995 | if(read_cb(buffer, 1, len, handle) != len) |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 1996 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 1997 | track->num_indices = (FLAC__byte)unpack_uint32_(buffer, len); |
| 1998 | |
| 1999 | if(track->num_indices == 0) { |
| 2000 | track->indices = 0; |
| 2001 | } |
| 2002 | else if(0 == (track->indices = (FLAC__StreamMetadata_CueSheet_Index*)calloc(track->num_indices, sizeof(FLAC__StreamMetadata_CueSheet_Index)))) |
| 2003 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
| 2004 | |
| 2005 | for(i = 0; i < track->num_indices; i++) { |
| 2006 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN % 8 == 0); |
| 2007 | len = FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN / 8; |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2008 | if(read_cb(buffer, 1, len, handle) != len) |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2009 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 2010 | track->indices[i].offset = unpack_uint64_(buffer, len); |
| 2011 | |
| 2012 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN % 8 == 0); |
| 2013 | len = FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN / 8; |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2014 | if(read_cb(buffer, 1, len, handle) != len) |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2015 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 2016 | track->indices[i].number = (FLAC__byte)unpack_uint32_(buffer, len); |
| 2017 | |
| 2018 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN % 8 == 0); |
| 2019 | len = FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN / 8; |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2020 | if(read_cb(buffer, 1, len, handle) != len) |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2021 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 2022 | } |
| 2023 | |
| 2024 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
| 2025 | } |
| 2026 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2027 | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_cuesheet_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_CueSheet *block) |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2028 | { |
| 2029 | unsigned i, len; |
| 2030 | FLAC__Metadata_SimpleIteratorStatus status; |
Josh Coalson | bfc8e31 | 2002-11-21 09:00:25 +0000 | [diff] [blame] | 2031 | FLAC__byte buffer[1024]; /* MSVC needs a constant expression so we put a magic number and assert */ |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2032 | |
Josh Coalson | 8f0c71b | 2002-12-05 06:37:46 +0000 | [diff] [blame] | 2033 | FLAC__ASSERT((FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN + FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN)/8 <= sizeof(buffer)); |
Josh Coalson | bfc8e31 | 2002-11-21 09:00:25 +0000 | [diff] [blame] | 2034 | FLAC__ASSERT(sizeof(FLAC__uint64) <= sizeof(buffer)); |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2035 | |
| 2036 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN % 8 == 0); |
| 2037 | len = FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN / 8; |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2038 | if(read_cb(block->media_catalog_number, 1, len, handle) != len) |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2039 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 2040 | |
| 2041 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN % 8 == 0); |
| 2042 | len = FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN / 8; |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2043 | if(read_cb(buffer, 1, len, handle) != len) |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2044 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 2045 | block->lead_in = unpack_uint64_(buffer, len); |
| 2046 | |
Josh Coalson | 8f0c71b | 2002-12-05 06:37:46 +0000 | [diff] [blame] | 2047 | FLAC__ASSERT((FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN + FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN) % 8 == 0); |
| 2048 | len = (FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN + FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN) / 8; |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2049 | if(read_cb(buffer, 1, len, handle) != len) |
Josh Coalson | 38162d5 | 2002-11-16 06:31:54 +0000 | [diff] [blame] | 2050 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
Josh Coalson | 8f0c71b | 2002-12-05 06:37:46 +0000 | [diff] [blame] | 2051 | block->is_cd = buffer[0]&0x80? true : false; |
Josh Coalson | 38162d5 | 2002-11-16 06:31:54 +0000 | [diff] [blame] | 2052 | |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2053 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN % 8 == 0); |
| 2054 | len = FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN / 8; |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2055 | if(read_cb(buffer, 1, len, handle) != len) |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2056 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 2057 | block->num_tracks = unpack_uint32_(buffer, len); |
| 2058 | |
| 2059 | if(block->num_tracks == 0) { |
| 2060 | block->tracks = 0; |
| 2061 | } |
| 2062 | else if(0 == (block->tracks = (FLAC__StreamMetadata_CueSheet_Track*)calloc(block->num_tracks, sizeof(FLAC__StreamMetadata_CueSheet_Track)))) |
| 2063 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
| 2064 | |
| 2065 | for(i = 0; i < block->num_tracks; i++) { |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2066 | if(FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK != (status = read_metadata_block_data_cuesheet_track_cb_(handle, read_cb, block->tracks + i))) |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2067 | return status; |
| 2068 | } |
| 2069 | |
| 2070 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
| 2071 | } |
| 2072 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2073 | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_unknown_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_Unknown *block, unsigned block_length) |
Josh Coalson | d060947 | 2003-01-10 05:37:13 +0000 | [diff] [blame] | 2074 | { |
Josh Coalson | d060947 | 2003-01-10 05:37:13 +0000 | [diff] [blame] | 2075 | if(block_length == 0) { |
| 2076 | block->data = 0; |
| 2077 | } |
| 2078 | else { |
| 2079 | if(0 == (block->data = (FLAC__byte*)malloc(block_length))) |
| 2080 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
| 2081 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2082 | if(read_cb(block->data, 1, block_length, handle) != block_length) |
Josh Coalson | d060947 | 2003-01-10 05:37:13 +0000 | [diff] [blame] | 2083 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 2084 | } |
| 2085 | |
| 2086 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
| 2087 | } |
| 2088 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 2089 | FLAC__bool write_metadata_block_header_(FILE *file, FLAC__Metadata_SimpleIteratorStatus *status, const FLAC__StreamMetadata *block) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2090 | { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2091 | FLAC__ASSERT(0 != file); |
| 2092 | FLAC__ASSERT(0 != status); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2093 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2094 | if(!write_metadata_block_header_cb_((FLAC__IOHandle)file, (FLAC__IOCallback_Write)fwrite, block)) { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2095 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_WRITE_ERROR; |
| 2096 | return false; |
| 2097 | } |
| 2098 | |
| 2099 | return true; |
| 2100 | } |
| 2101 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 2102 | FLAC__bool write_metadata_block_data_(FILE *file, FLAC__Metadata_SimpleIteratorStatus *status, const FLAC__StreamMetadata *block) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2103 | { |
| 2104 | FLAC__ASSERT(0 != file); |
| 2105 | FLAC__ASSERT(0 != status); |
| 2106 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2107 | if (write_metadata_block_data_cb_((FLAC__IOHandle)file, (FLAC__IOCallback_Write)fwrite, block)) { |
| 2108 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
| 2109 | return true; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2110 | } |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2111 | else { |
| 2112 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_WRITE_ERROR; |
| 2113 | return false; |
| 2114 | } |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2115 | } |
| 2116 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2117 | FLAC__bool write_metadata_block_header_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata *block) |
| 2118 | { |
| 2119 | FLAC__byte buffer[FLAC__STREAM_METADATA_HEADER_LENGTH]; |
| 2120 | |
| 2121 | FLAC__ASSERT(block->length < (1u << FLAC__STREAM_METADATA_LENGTH_LEN)); |
| 2122 | |
| 2123 | buffer[0] = (block->is_last? 0x80 : 0) | (FLAC__byte)block->type; |
| 2124 | pack_uint32_(block->length, buffer + 1, 3); |
| 2125 | |
| 2126 | if(write_cb(buffer, 1, FLAC__STREAM_METADATA_HEADER_LENGTH, handle) != FLAC__STREAM_METADATA_HEADER_LENGTH) |
| 2127 | return false; |
| 2128 | |
| 2129 | return true; |
| 2130 | } |
| 2131 | |
| 2132 | FLAC__bool write_metadata_block_data_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata *block) |
| 2133 | { |
| 2134 | FLAC__ASSERT(0 != block); |
| 2135 | |
| 2136 | switch(block->type) { |
| 2137 | case FLAC__METADATA_TYPE_STREAMINFO: |
| 2138 | return write_metadata_block_data_streaminfo_cb_(handle, write_cb, &block->data.stream_info); |
| 2139 | case FLAC__METADATA_TYPE_PADDING: |
| 2140 | return write_metadata_block_data_padding_cb_(handle, write_cb, &block->data.padding, block->length); |
| 2141 | case FLAC__METADATA_TYPE_APPLICATION: |
| 2142 | return write_metadata_block_data_application_cb_(handle, write_cb, &block->data.application, block->length); |
| 2143 | case FLAC__METADATA_TYPE_SEEKTABLE: |
| 2144 | return write_metadata_block_data_seektable_cb_(handle, write_cb, &block->data.seek_table); |
| 2145 | case FLAC__METADATA_TYPE_VORBIS_COMMENT: |
| 2146 | return write_metadata_block_data_vorbis_comment_cb_(handle, write_cb, &block->data.vorbis_comment); |
| 2147 | case FLAC__METADATA_TYPE_CUESHEET: |
| 2148 | return write_metadata_block_data_cuesheet_cb_(handle, write_cb, &block->data.cue_sheet); |
| 2149 | default: |
| 2150 | return write_metadata_block_data_unknown_cb_(handle, write_cb, &block->data.unknown, block->length); |
| 2151 | } |
| 2152 | } |
| 2153 | |
| 2154 | FLAC__bool write_metadata_block_data_streaminfo_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_StreamInfo *block) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2155 | { |
| 2156 | FLAC__byte buffer[FLAC__STREAM_METADATA_STREAMINFO_LENGTH]; |
| 2157 | const unsigned channels1 = block->channels - 1; |
| 2158 | const unsigned bps1 = block->bits_per_sample - 1; |
| 2159 | |
Josh Coalson | f0a8c4f | 2003-01-15 03:17:51 +0000 | [diff] [blame] | 2160 | /* we are using hardcoded numbers for simplicity but we should |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2161 | * probably eventually write a bit-level packer and use the |
| 2162 | * _STREAMINFO_ constants. |
| 2163 | */ |
| 2164 | pack_uint32_(block->min_blocksize, buffer, 2); |
| 2165 | pack_uint32_(block->max_blocksize, buffer+2, 2); |
| 2166 | pack_uint32_(block->min_framesize, buffer+4, 3); |
| 2167 | pack_uint32_(block->max_framesize, buffer+7, 3); |
| 2168 | buffer[10] = (block->sample_rate >> 12) & 0xff; |
| 2169 | buffer[11] = (block->sample_rate >> 4) & 0xff; |
| 2170 | buffer[12] = ((block->sample_rate & 0x0f) << 4) | (channels1 << 1) | (bps1 >> 4); |
Josh Coalson | 7ee4d17 | 2002-06-01 06:31:27 +0000 | [diff] [blame] | 2171 | buffer[13] = (FLAC__byte)(((bps1 & 0x0f) << 4) | ((block->total_samples >> 32) & 0x0f)); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2172 | pack_uint32_((FLAC__uint32)block->total_samples, buffer+14, 4); |
| 2173 | memcpy(buffer+18, block->md5sum, 16); |
| 2174 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2175 | if(write_cb(buffer, 1, FLAC__STREAM_METADATA_STREAMINFO_LENGTH, handle) != FLAC__STREAM_METADATA_STREAMINFO_LENGTH) |
| 2176 | return false; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2177 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2178 | return true; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2179 | } |
| 2180 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2181 | FLAC__bool write_metadata_block_data_padding_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_Padding *block, unsigned block_length) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2182 | { |
| 2183 | unsigned i, n = block_length; |
| 2184 | FLAC__byte buffer[1024]; |
| 2185 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2186 | (void)block; |
| 2187 | |
| 2188 | memset(buffer, 0, 1024); |
| 2189 | |
| 2190 | for(i = 0; i < n/1024; i++) |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2191 | if(write_cb(buffer, 1, 1024, handle) != 1024) |
| 2192 | return false; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2193 | |
| 2194 | n %= 1024; |
Josh Coalson | 765ff50 | 2002-08-27 05:46:11 +0000 | [diff] [blame] | 2195 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2196 | if(write_cb(buffer, 1, n, handle) != n) |
| 2197 | return false; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2198 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2199 | return true; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2200 | } |
| 2201 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2202 | FLAC__bool write_metadata_block_data_application_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_Application *block, unsigned block_length) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2203 | { |
| 2204 | const unsigned id_bytes = FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8; |
| 2205 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2206 | if(write_cb(block->id, 1, id_bytes, handle) != id_bytes) |
| 2207 | return false; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2208 | |
| 2209 | block_length -= id_bytes; |
| 2210 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2211 | if(write_cb(block->data, 1, block_length, handle) != block_length) |
| 2212 | return false; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2213 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2214 | return true; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2215 | } |
| 2216 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2217 | FLAC__bool write_metadata_block_data_seektable_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_SeekTable *block) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2218 | { |
| 2219 | unsigned i; |
| 2220 | FLAC__byte buffer[FLAC__STREAM_METADATA_SEEKPOINT_LENGTH]; |
| 2221 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2222 | for(i = 0; i < block->num_points; i++) { |
Josh Coalson | f0a8c4f | 2003-01-15 03:17:51 +0000 | [diff] [blame] | 2223 | /* some MAGIC NUMBERs here */ |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2224 | pack_uint64_(block->points[i].sample_number, buffer, 8); |
| 2225 | pack_uint64_(block->points[i].stream_offset, buffer+8, 8); |
| 2226 | pack_uint32_(block->points[i].frame_samples, buffer+16, 2); |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2227 | if(write_cb(buffer, 1, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH, handle) != FLAC__STREAM_METADATA_SEEKPOINT_LENGTH) |
| 2228 | return false; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2229 | } |
| 2230 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2231 | return true; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2232 | } |
| 2233 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2234 | FLAC__bool write_metadata_block_data_vorbis_comment_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_VorbisComment *block) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2235 | { |
| 2236 | unsigned i; |
| 2237 | const unsigned entry_length_len = FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN / 8; |
| 2238 | const unsigned num_comments_len = FLAC__STREAM_METADATA_VORBIS_COMMENT_NUM_COMMENTS_LEN / 8; |
Josh Coalson | 7ee4d17 | 2002-06-01 06:31:27 +0000 | [diff] [blame] | 2239 | FLAC__byte buffer[4]; /* magic number is asserted below */ |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2240 | |
Josh Coalson | 7ee4d17 | 2002-06-01 06:31:27 +0000 | [diff] [blame] | 2241 | FLAC__ASSERT(max(FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN, FLAC__STREAM_METADATA_VORBIS_COMMENT_NUM_COMMENTS_LEN) / 8 == 4); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2242 | |
| 2243 | pack_uint32_little_endian_(block->vendor_string.length, buffer, entry_length_len); |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2244 | if(write_cb(buffer, 1, entry_length_len, handle) != entry_length_len) |
| 2245 | return false; |
| 2246 | if(write_cb(block->vendor_string.entry, 1, block->vendor_string.length, handle) != block->vendor_string.length) |
| 2247 | return false; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2248 | |
| 2249 | pack_uint32_little_endian_(block->num_comments, buffer, num_comments_len); |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2250 | if(write_cb(buffer, 1, num_comments_len, handle) != num_comments_len) |
| 2251 | return false; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2252 | |
| 2253 | for(i = 0; i < block->num_comments; i++) { |
| 2254 | pack_uint32_little_endian_(block->comments[i].length, buffer, entry_length_len); |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2255 | if(write_cb(buffer, 1, entry_length_len, handle) != entry_length_len) |
| 2256 | return false; |
| 2257 | if(write_cb(block->comments[i].entry, 1, block->comments[i].length, handle) != block->comments[i].length) |
| 2258 | return false; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2259 | } |
| 2260 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2261 | return true; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2262 | } |
| 2263 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2264 | FLAC__bool write_metadata_block_data_cuesheet_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_CueSheet *block) |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2265 | { |
| 2266 | unsigned i, j, len; |
Josh Coalson | 38162d5 | 2002-11-16 06:31:54 +0000 | [diff] [blame] | 2267 | FLAC__byte buffer[1024]; /* asserted below that this is big enough */ |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2268 | |
| 2269 | FLAC__ASSERT(sizeof(buffer) >= sizeof(FLAC__uint64)); |
Josh Coalson | 38162d5 | 2002-11-16 06:31:54 +0000 | [diff] [blame] | 2270 | FLAC__ASSERT(sizeof(buffer) >= FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN/8); |
Josh Coalson | 8f0c71b | 2002-12-05 06:37:46 +0000 | [diff] [blame] | 2271 | FLAC__ASSERT(sizeof(buffer) >= (FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN + FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN)/8); |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2272 | FLAC__ASSERT(sizeof(buffer) >= FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN/8); |
| 2273 | |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2274 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN % 8 == 0); |
| 2275 | len = FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN / 8; |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2276 | if(write_cb(block->media_catalog_number, 1, len, handle) != len) |
| 2277 | return false; |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2278 | |
| 2279 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN % 8 == 0); |
| 2280 | len = FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN / 8; |
| 2281 | pack_uint64_(block->lead_in, buffer, len); |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2282 | if(write_cb(buffer, 1, len, handle) != len) |
| 2283 | return false; |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2284 | |
Josh Coalson | 8f0c71b | 2002-12-05 06:37:46 +0000 | [diff] [blame] | 2285 | FLAC__ASSERT((FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN + FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN) % 8 == 0); |
| 2286 | len = (FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN + FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN) / 8; |
Josh Coalson | 38162d5 | 2002-11-16 06:31:54 +0000 | [diff] [blame] | 2287 | memset(buffer, 0, len); |
Josh Coalson | 8f0c71b | 2002-12-05 06:37:46 +0000 | [diff] [blame] | 2288 | if(block->is_cd) |
| 2289 | buffer[0] |= 0x80; |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2290 | if(write_cb(buffer, 1, len, handle) != len) |
| 2291 | return false; |
Josh Coalson | 38162d5 | 2002-11-16 06:31:54 +0000 | [diff] [blame] | 2292 | |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2293 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN % 8 == 0); |
| 2294 | len = FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN / 8; |
| 2295 | pack_uint32_(block->num_tracks, buffer, len); |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2296 | if(write_cb(buffer, 1, len, handle) != len) |
| 2297 | return false; |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2298 | |
| 2299 | for(i = 0; i < block->num_tracks; i++) { |
| 2300 | FLAC__StreamMetadata_CueSheet_Track *track = block->tracks + i; |
| 2301 | |
| 2302 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN % 8 == 0); |
| 2303 | len = FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN / 8; |
| 2304 | pack_uint64_(track->offset, buffer, len); |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2305 | if(write_cb(buffer, 1, len, handle) != len) |
| 2306 | return false; |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2307 | |
| 2308 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN % 8 == 0); |
| 2309 | len = FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN / 8; |
| 2310 | pack_uint32_(track->number, buffer, len); |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2311 | if(write_cb(buffer, 1, len, handle) != len) |
| 2312 | return false; |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2313 | |
| 2314 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN % 8 == 0); |
| 2315 | len = FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN / 8; |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2316 | if(write_cb(track->isrc, 1, len, handle) != len) |
| 2317 | return false; |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2318 | |
| 2319 | FLAC__ASSERT((FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN) % 8 == 0); |
| 2320 | len = (FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN) / 8; |
| 2321 | memset(buffer, 0, len); |
| 2322 | buffer[0] = (track->type << 7) | (track->pre_emphasis << 6); |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2323 | if(write_cb(buffer, 1, len, handle) != len) |
| 2324 | return false; |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2325 | |
| 2326 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN % 8 == 0); |
| 2327 | len = FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN / 8; |
| 2328 | pack_uint32_(track->num_indices, buffer, len); |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2329 | if(write_cb(buffer, 1, len, handle) != len) |
| 2330 | return false; |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2331 | |
| 2332 | for(j = 0; j < track->num_indices; j++) { |
| 2333 | FLAC__StreamMetadata_CueSheet_Index *index = track->indices + j; |
| 2334 | |
| 2335 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN % 8 == 0); |
| 2336 | len = FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN / 8; |
| 2337 | pack_uint64_(index->offset, buffer, len); |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2338 | if(write_cb(buffer, 1, len, handle) != len) |
| 2339 | return false; |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2340 | |
| 2341 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN % 8 == 0); |
| 2342 | len = FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN / 8; |
| 2343 | pack_uint32_(index->number, buffer, len); |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2344 | if(write_cb(buffer, 1, len, handle) != len) |
| 2345 | return false; |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2346 | |
| 2347 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN % 8 == 0); |
| 2348 | len = FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN / 8; |
| 2349 | memset(buffer, 0, len); |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2350 | if(write_cb(buffer, 1, len, handle) != len) |
| 2351 | return false; |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2352 | } |
| 2353 | } |
| 2354 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2355 | return true; |
Josh Coalson | e486938 | 2002-11-15 05:41:48 +0000 | [diff] [blame] | 2356 | } |
| 2357 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2358 | FLAC__bool write_metadata_block_data_unknown_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_Unknown *block, unsigned block_length) |
Josh Coalson | d060947 | 2003-01-10 05:37:13 +0000 | [diff] [blame] | 2359 | { |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2360 | if(write_cb(block->data, 1, block_length, handle) != block_length) |
| 2361 | return false; |
Josh Coalson | d060947 | 2003-01-10 05:37:13 +0000 | [diff] [blame] | 2362 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2363 | return true; |
Josh Coalson | d060947 | 2003-01-10 05:37:13 +0000 | [diff] [blame] | 2364 | } |
| 2365 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 2366 | FLAC__bool write_metadata_block_stationary_(FLAC__Metadata_SimpleIterator *iterator, const FLAC__StreamMetadata *block) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2367 | { |
| 2368 | if(0 != fseek(iterator->file, iterator->offset[iterator->depth], SEEK_SET)) { |
| 2369 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
| 2370 | return false; |
| 2371 | } |
| 2372 | |
| 2373 | if(!write_metadata_block_header_(iterator->file, &iterator->status, block)) |
| 2374 | return false; |
| 2375 | |
| 2376 | if(!write_metadata_block_data_(iterator->file, &iterator->status, block)) |
| 2377 | return false; |
| 2378 | |
| 2379 | if(0 != fseek(iterator->file, iterator->offset[iterator->depth], SEEK_SET)) { |
| 2380 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
| 2381 | return false; |
| 2382 | } |
| 2383 | |
| 2384 | return read_metadata_block_header_(iterator); |
| 2385 | } |
| 2386 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 2387 | FLAC__bool write_metadata_block_stationary_with_padding_(FLAC__Metadata_SimpleIterator *iterator, FLAC__StreamMetadata *block, unsigned padding_length, FLAC__bool padding_is_last) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2388 | { |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 2389 | FLAC__StreamMetadata *padding; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2390 | |
| 2391 | if(0 != fseek(iterator->file, iterator->offset[iterator->depth], SEEK_SET)) { |
| 2392 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
| 2393 | return false; |
| 2394 | } |
| 2395 | |
| 2396 | block->is_last = false; |
| 2397 | |
| 2398 | if(!write_metadata_block_header_(iterator->file, &iterator->status, block)) |
| 2399 | return false; |
| 2400 | |
| 2401 | if(!write_metadata_block_data_(iterator->file, &iterator->status, block)) |
| 2402 | return false; |
| 2403 | |
| 2404 | if(0 == (padding = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING))) |
| 2405 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
| 2406 | |
| 2407 | padding->is_last = padding_is_last; |
| 2408 | padding->length = padding_length; |
| 2409 | |
| 2410 | if(!write_metadata_block_header_(iterator->file, &iterator->status, padding)) { |
| 2411 | FLAC__metadata_object_delete(padding); |
| 2412 | return false; |
| 2413 | } |
| 2414 | |
| 2415 | if(!write_metadata_block_data_(iterator->file, &iterator->status, padding)) { |
| 2416 | FLAC__metadata_object_delete(padding); |
| 2417 | return false; |
| 2418 | } |
| 2419 | |
| 2420 | FLAC__metadata_object_delete(padding); |
| 2421 | |
| 2422 | if(0 != fseek(iterator->file, iterator->offset[iterator->depth], SEEK_SET)) { |
| 2423 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
| 2424 | return false; |
| 2425 | } |
| 2426 | |
| 2427 | return read_metadata_block_header_(iterator); |
| 2428 | } |
| 2429 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 2430 | FLAC__bool rewrite_whole_file_(FLAC__Metadata_SimpleIterator *iterator, FLAC__StreamMetadata *block, FLAC__bool append) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2431 | { |
| 2432 | FILE *tempfile; |
| 2433 | char *tempfilename; |
Josh Coalson | 6b02a75 | 2002-05-10 06:42:02 +0000 | [diff] [blame] | 2434 | int fixup_is_last_code = 0; /* 0 => no need to change any is_last flags */ |
| 2435 | long fixup_is_last_flag_offset = -1; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2436 | |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 2437 | FLAC__ASSERT(0 != block || append == false); |
| 2438 | |
Josh Coalson | 6b02a75 | 2002-05-10 06:42:02 +0000 | [diff] [blame] | 2439 | if(iterator->is_last) { |
| 2440 | if(append) { |
| 2441 | fixup_is_last_code = 1; /* 1 => clear the is_last flag at the following offset */ |
| 2442 | fixup_is_last_flag_offset = iterator->offset[iterator->depth]; |
| 2443 | } |
| 2444 | else if(0 == block) { |
| 2445 | simple_iterator_push_(iterator); |
| 2446 | if(!FLAC__metadata_simple_iterator_prev(iterator)) { |
| 2447 | (void)simple_iterator_pop_(iterator); |
| 2448 | return false; |
| 2449 | } |
| 2450 | fixup_is_last_code = -1; /* -1 => set the is_last the flag at the following offset */ |
| 2451 | fixup_is_last_flag_offset = iterator->offset[iterator->depth]; |
| 2452 | if(!simple_iterator_pop_(iterator)) |
| 2453 | return false; |
| 2454 | } |
| 2455 | } |
| 2456 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2457 | if(!simple_iterator_copy_file_prefix_(iterator, &tempfile, &tempfilename, append)) |
| 2458 | return false; |
| 2459 | |
| 2460 | if(0 != block) { |
| 2461 | if(!write_metadata_block_header_(tempfile, &iterator->status, block)) { |
| 2462 | cleanup_tempfile_(&tempfile, &tempfilename); |
| 2463 | return false; |
| 2464 | } |
| 2465 | |
| 2466 | if(!write_metadata_block_data_(tempfile, &iterator->status, block)) { |
| 2467 | cleanup_tempfile_(&tempfile, &tempfilename); |
| 2468 | return false; |
| 2469 | } |
| 2470 | } |
| 2471 | |
Josh Coalson | 6b02a75 | 2002-05-10 06:42:02 +0000 | [diff] [blame] | 2472 | if(!simple_iterator_copy_file_postfix_(iterator, &tempfile, &tempfilename, fixup_is_last_code, fixup_is_last_flag_offset, block==0)) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2473 | return false; |
| 2474 | |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 2475 | if(append) |
| 2476 | return FLAC__metadata_simple_iterator_next(iterator); |
| 2477 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2478 | return true; |
| 2479 | } |
| 2480 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 2481 | void simple_iterator_push_(FLAC__Metadata_SimpleIterator *iterator) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2482 | { |
| 2483 | FLAC__ASSERT(iterator->depth+1 < SIMPLE_ITERATOR_MAX_PUSH_DEPTH); |
| 2484 | iterator->offset[iterator->depth+1] = iterator->offset[iterator->depth]; |
| 2485 | iterator->depth++; |
| 2486 | } |
| 2487 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 2488 | FLAC__bool simple_iterator_pop_(FLAC__Metadata_SimpleIterator *iterator) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2489 | { |
| 2490 | FLAC__ASSERT(iterator->depth > 0); |
| 2491 | iterator->depth--; |
| 2492 | if(0 != fseek(iterator->file, iterator->offset[iterator->depth], SEEK_SET)) { |
| 2493 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
| 2494 | return false; |
| 2495 | } |
| 2496 | |
| 2497 | return read_metadata_block_header_(iterator); |
| 2498 | } |
| 2499 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2500 | /* return meanings: |
| 2501 | * 0: ok |
| 2502 | * 1: read error |
| 2503 | * 2: seek error |
| 2504 | * 3: not a FLAC file |
| 2505 | */ |
| 2506 | unsigned seek_to_first_metadata_block_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOCallback_Seek seek_cb) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2507 | { |
Josh Coalson | a7b673c | 2002-05-25 02:13:38 +0000 | [diff] [blame] | 2508 | FLAC__byte buffer[4]; |
| 2509 | size_t n; |
| 2510 | unsigned i; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2511 | |
Josh Coalson | a7b673c | 2002-05-25 02:13:38 +0000 | [diff] [blame] | 2512 | FLAC__ASSERT(FLAC__STREAM_SYNC_LENGTH == 4); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2513 | |
Josh Coalson | a7b673c | 2002-05-25 02:13:38 +0000 | [diff] [blame] | 2514 | /* skip any id3v2 tag */ |
| 2515 | errno = 0; |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2516 | n = read_cb(buffer, 1, 4, handle); |
Josh Coalson | a7b673c | 2002-05-25 02:13:38 +0000 | [diff] [blame] | 2517 | if(errno) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2518 | return 1; |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2519 | else if(n != 4) |
| 2520 | return 3; |
Josh Coalson | a7b673c | 2002-05-25 02:13:38 +0000 | [diff] [blame] | 2521 | else if(0 == memcmp(buffer, "ID3", 3)) { |
| 2522 | unsigned tag_length = 0; |
| 2523 | |
| 2524 | /* skip to the tag length */ |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2525 | if(seek_cb(handle, 2, SEEK_CUR) < 0) |
| 2526 | return 2; |
Josh Coalson | a7b673c | 2002-05-25 02:13:38 +0000 | [diff] [blame] | 2527 | |
| 2528 | /* read the length */ |
| 2529 | for(i = 0; i < 4; i++) { |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2530 | if(read_cb(buffer, 1, 1, handle) < 1 || buffer[0] & 0x80) |
Josh Coalson | a7b673c | 2002-05-25 02:13:38 +0000 | [diff] [blame] | 2531 | return 1; |
| 2532 | tag_length <<= 7; |
| 2533 | tag_length |= (buffer[0] & 0x7f); |
| 2534 | } |
| 2535 | |
| 2536 | /* skip the rest of the tag */ |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2537 | if(seek_cb(handle, tag_length, SEEK_CUR) < 0) |
| 2538 | return 2; |
Josh Coalson | a7b673c | 2002-05-25 02:13:38 +0000 | [diff] [blame] | 2539 | |
| 2540 | /* read the stream sync code */ |
| 2541 | errno = 0; |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2542 | n = read_cb(buffer, 1, 4, handle); |
Josh Coalson | a7b673c | 2002-05-25 02:13:38 +0000 | [diff] [blame] | 2543 | if(errno) |
| 2544 | return 1; |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2545 | else if(n != 4) |
| 2546 | return 3; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2547 | } |
Josh Coalson | a7b673c | 2002-05-25 02:13:38 +0000 | [diff] [blame] | 2548 | |
| 2549 | /* check for the fLaC signature */ |
| 2550 | if(0 == memcmp(FLAC__STREAM_SYNC_STRING, buffer, FLAC__STREAM_SYNC_LENGTH)) |
| 2551 | return 0; |
| 2552 | else |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2553 | return 3; |
| 2554 | } |
| 2555 | |
| 2556 | unsigned seek_to_first_metadata_block_(FILE *f) |
| 2557 | { |
| 2558 | return seek_to_first_metadata_block_cb_((FLAC__IOHandle)f, (FLAC__IOCallback_Read)fread, fseek_wrapper_); |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2559 | } |
| 2560 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 2561 | FLAC__bool simple_iterator_copy_file_prefix_(FLAC__Metadata_SimpleIterator *iterator, FILE **tempfile, char **tempfilename, FLAC__bool append) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2562 | { |
Josh Coalson | 7294309 | 2002-05-22 05:35:43 +0000 | [diff] [blame] | 2563 | const long offset_end = append? iterator->offset[iterator->depth] + (long)FLAC__STREAM_METADATA_HEADER_LENGTH + (long)iterator->length : iterator->offset[iterator->depth]; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2564 | |
| 2565 | if(0 != fseek(iterator->file, 0, SEEK_SET)) { |
| 2566 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
| 2567 | return false; |
| 2568 | } |
| 2569 | if(!open_tempfile_(iterator->filename, iterator->tempfile_path_prefix, tempfile, tempfilename, &iterator->status)) { |
| 2570 | cleanup_tempfile_(tempfile, tempfilename); |
| 2571 | return false; |
| 2572 | } |
| 2573 | if(!copy_n_bytes_from_file_(iterator->file, *tempfile, offset_end, &iterator->status)) { |
| 2574 | cleanup_tempfile_(tempfile, tempfilename); |
| 2575 | return false; |
| 2576 | } |
| 2577 | |
| 2578 | return true; |
| 2579 | } |
| 2580 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 2581 | FLAC__bool simple_iterator_copy_file_postfix_(FLAC__Metadata_SimpleIterator *iterator, FILE **tempfile, char **tempfilename, int fixup_is_last_code, long fixup_is_last_flag_offset, FLAC__bool backup) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2582 | { |
| 2583 | long save_offset = iterator->offset[iterator->depth]; /*@@@ 2G limit */ |
| 2584 | FLAC__ASSERT(0 != *tempfile); |
| 2585 | |
Josh Coalson | eb643a2 | 2002-05-20 05:58:50 +0000 | [diff] [blame] | 2586 | if(0 != fseek(iterator->file, save_offset + FLAC__STREAM_METADATA_HEADER_LENGTH + iterator->length, SEEK_SET)) { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2587 | cleanup_tempfile_(tempfile, tempfilename); |
| 2588 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
| 2589 | return false; |
| 2590 | } |
| 2591 | if(!copy_remaining_bytes_from_file_(iterator->file, *tempfile, &iterator->status)) { |
| 2592 | cleanup_tempfile_(tempfile, tempfilename); |
| 2593 | return false; |
| 2594 | } |
| 2595 | |
Josh Coalson | 6b02a75 | 2002-05-10 06:42:02 +0000 | [diff] [blame] | 2596 | if(fixup_is_last_code != 0) { |
| 2597 | /* |
| 2598 | * if code == 1, it means a block was appended to the end so |
| 2599 | * we have to clear the is_last flag of the previous block |
| 2600 | * if code == -1, it means the last block was deleted so |
| 2601 | * we have to set the is_last flag of the previous block |
| 2602 | */ |
Josh Coalson | f0a8c4f | 2003-01-15 03:17:51 +0000 | [diff] [blame] | 2603 | /* MAGIC NUMBERs here; we know the is_last flag is the high bit of the byte at this location */ |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2604 | FLAC__byte x; |
| 2605 | if(0 != fseek(*tempfile, fixup_is_last_flag_offset, SEEK_SET)) { |
| 2606 | cleanup_tempfile_(tempfile, tempfilename); |
| 2607 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
| 2608 | return false; |
| 2609 | } |
| 2610 | if(fread(&x, 1, 1, *tempfile) != 1) { |
| 2611 | cleanup_tempfile_(tempfile, tempfilename); |
| 2612 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 2613 | return false; |
| 2614 | } |
Josh Coalson | 6b02a75 | 2002-05-10 06:42:02 +0000 | [diff] [blame] | 2615 | if(fixup_is_last_code > 0) { |
| 2616 | FLAC__ASSERT(x & 0x80); |
| 2617 | x &= 0x7f; |
| 2618 | } |
| 2619 | else { |
| 2620 | FLAC__ASSERT(!(x & 0x80)); |
| 2621 | x |= 0x80; |
| 2622 | } |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2623 | if(0 != fseek(*tempfile, fixup_is_last_flag_offset, SEEK_SET)) { |
| 2624 | cleanup_tempfile_(tempfile, tempfilename); |
| 2625 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
| 2626 | return false; |
| 2627 | } |
Josh Coalson | f91251d | 2002-12-28 07:04:49 +0000 | [diff] [blame] | 2628 | if(local__fwrite(&x, 1, 1, *tempfile) != 1) { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2629 | cleanup_tempfile_(tempfile, tempfilename); |
| 2630 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_WRITE_ERROR; |
| 2631 | return false; |
| 2632 | } |
| 2633 | } |
| 2634 | |
| 2635 | (void)fclose(iterator->file); |
| 2636 | |
| 2637 | if(!transport_tempfile_(iterator->filename, tempfile, tempfilename, &iterator->status)) |
| 2638 | return false; |
| 2639 | |
| 2640 | if(iterator->has_stats) |
| 2641 | set_file_stats_(iterator->filename, &iterator->stats); |
| 2642 | |
Josh Coalson | 3ac6693 | 2002-08-30 05:41:31 +0000 | [diff] [blame] | 2643 | if(!simple_iterator_prime_input_(iterator, !iterator->is_writable)) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2644 | return false; |
| 2645 | if(backup) { |
Josh Coalson | eb643a2 | 2002-05-20 05:58:50 +0000 | [diff] [blame] | 2646 | while(iterator->offset[iterator->depth] + (long)FLAC__STREAM_METADATA_HEADER_LENGTH + (long)iterator->length < save_offset) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2647 | if(!FLAC__metadata_simple_iterator_next(iterator)) |
| 2648 | return false; |
| 2649 | return true; |
| 2650 | } |
| 2651 | else { |
| 2652 | /* move the iterator to it's original block faster by faking a push, then doing a pop_ */ |
| 2653 | FLAC__ASSERT(iterator->depth == 0); |
| 2654 | iterator->offset[0] = save_offset; |
| 2655 | iterator->depth++; |
| 2656 | return simple_iterator_pop_(iterator); |
| 2657 | } |
| 2658 | } |
| 2659 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 2660 | FLAC__bool copy_n_bytes_from_file_(FILE *file, FILE *tempfile, unsigned bytes/*@@@ 4G limit*/, FLAC__Metadata_SimpleIteratorStatus *status) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2661 | { |
| 2662 | FLAC__byte buffer[8192]; |
| 2663 | unsigned n; |
| 2664 | |
| 2665 | while(bytes > 0) { |
| 2666 | n = min(sizeof(buffer), bytes); |
| 2667 | if(fread(buffer, 1, n, file) != n) { |
| 2668 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 2669 | return false; |
| 2670 | } |
Josh Coalson | f91251d | 2002-12-28 07:04:49 +0000 | [diff] [blame] | 2671 | if(local__fwrite(buffer, 1, n, tempfile) != n) { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2672 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_WRITE_ERROR; |
| 2673 | return false; |
| 2674 | } |
| 2675 | bytes -= n; |
| 2676 | } |
| 2677 | |
| 2678 | return true; |
| 2679 | } |
| 2680 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2681 | FLAC__bool copy_n_bytes_from_file_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOHandle temp_handle, FLAC__IOCallback_Write temp_write_cb, unsigned bytes/*@@@ 4G limit*/, FLAC__Metadata_SimpleIteratorStatus *status) |
| 2682 | { |
| 2683 | FLAC__byte buffer[8192]; |
| 2684 | unsigned n; |
| 2685 | |
| 2686 | while(bytes > 0) { |
| 2687 | n = min(sizeof(buffer), bytes); |
| 2688 | if(read_cb(buffer, 1, n, handle) != n) { |
| 2689 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 2690 | return false; |
| 2691 | } |
| 2692 | if(temp_write_cb(buffer, 1, n, temp_handle) != n) { |
| 2693 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_WRITE_ERROR; |
| 2694 | return false; |
| 2695 | } |
| 2696 | bytes -= n; |
| 2697 | } |
| 2698 | |
| 2699 | return true; |
| 2700 | } |
| 2701 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 2702 | FLAC__bool copy_remaining_bytes_from_file_(FILE *file, FILE *tempfile, FLAC__Metadata_SimpleIteratorStatus *status) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2703 | { |
| 2704 | FLAC__byte buffer[8192]; |
| 2705 | size_t n; |
| 2706 | |
| 2707 | while(!feof(file)) { |
| 2708 | n = fread(buffer, 1, sizeof(buffer), file); |
| 2709 | if(n == 0 && !feof(file)) { |
| 2710 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 2711 | return false; |
| 2712 | } |
Josh Coalson | f91251d | 2002-12-28 07:04:49 +0000 | [diff] [blame] | 2713 | if(n > 0 && local__fwrite(buffer, 1, n, tempfile) != n) { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2714 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_WRITE_ERROR; |
| 2715 | return false; |
| 2716 | } |
| 2717 | } |
| 2718 | |
| 2719 | return true; |
| 2720 | } |
| 2721 | |
Josh Coalson | 463a22c | 2004-07-11 06:41:00 +0000 | [diff] [blame] | 2722 | FLAC__bool copy_remaining_bytes_from_file_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOCallback_Eof eof_cb, FLAC__IOHandle temp_handle, FLAC__IOCallback_Write temp_write_cb, FLAC__Metadata_SimpleIteratorStatus *status) |
| 2723 | { |
| 2724 | FLAC__byte buffer[8192]; |
| 2725 | size_t n; |
| 2726 | |
| 2727 | while(!eof_cb(handle)) { |
| 2728 | n = read_cb(buffer, 1, sizeof(buffer), handle); |
| 2729 | if(n == 0 && !eof_cb(handle)) { |
| 2730 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
| 2731 | return false; |
| 2732 | } |
| 2733 | if(n > 0 && temp_write_cb(buffer, 1, n, temp_handle) != n) { |
| 2734 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_WRITE_ERROR; |
| 2735 | return false; |
| 2736 | } |
| 2737 | } |
| 2738 | |
| 2739 | return true; |
| 2740 | } |
| 2741 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 2742 | FLAC__bool open_tempfile_(const char *filename, const char *tempfile_path_prefix, FILE **tempfile, char **tempfilename, FLAC__Metadata_SimpleIteratorStatus *status) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2743 | { |
| 2744 | static const char *tempfile_suffix = ".metadata_edit"; |
| 2745 | if(0 == tempfile_path_prefix) { |
Josh Coalson | 5e3fcb2 | 2002-11-06 07:11:26 +0000 | [diff] [blame] | 2746 | if(0 == (*tempfilename = (char*)malloc(strlen(filename) + strlen(tempfile_suffix) + 1))) { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2747 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
| 2748 | return false; |
| 2749 | } |
| 2750 | strcpy(*tempfilename, filename); |
| 2751 | strcat(*tempfilename, tempfile_suffix); |
| 2752 | } |
| 2753 | else { |
| 2754 | const char *p = strrchr(filename, '/'); |
| 2755 | if(0 == p) |
| 2756 | p = filename; |
| 2757 | else |
| 2758 | p++; |
| 2759 | |
Josh Coalson | 5e3fcb2 | 2002-11-06 07:11:26 +0000 | [diff] [blame] | 2760 | if(0 == (*tempfilename = (char*)malloc(strlen(tempfile_path_prefix) + 1 + strlen(p) + strlen(tempfile_suffix) + 1))) { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2761 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
| 2762 | return false; |
| 2763 | } |
| 2764 | strcpy(*tempfilename, tempfile_path_prefix); |
| 2765 | strcat(*tempfilename, "/"); |
| 2766 | strcat(*tempfilename, p); |
| 2767 | strcat(*tempfilename, tempfile_suffix); |
| 2768 | } |
| 2769 | |
Josh Coalson | 51ee465 | 2002-05-09 05:46:23 +0000 | [diff] [blame] | 2770 | if(0 == (*tempfile = fopen(*tempfilename, "w+b"))) { |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2771 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ERROR_OPENING_FILE; |
| 2772 | return false; |
| 2773 | } |
| 2774 | |
| 2775 | return true; |
| 2776 | } |
| 2777 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 2778 | FLAC__bool transport_tempfile_(const char *filename, FILE **tempfile, char **tempfilename, FLAC__Metadata_SimpleIteratorStatus *status) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2779 | { |
| 2780 | FLAC__ASSERT(0 != filename); |
| 2781 | FLAC__ASSERT(0 != tempfile); |
| 2782 | FLAC__ASSERT(0 != *tempfile); |
| 2783 | FLAC__ASSERT(0 != tempfilename); |
| 2784 | FLAC__ASSERT(0 != *tempfilename); |
| 2785 | FLAC__ASSERT(0 != status); |
| 2786 | |
| 2787 | (void)fclose(*tempfile); |
| 2788 | *tempfile = 0; |
Josh Coalson | d57c8d3 | 2002-06-11 06:15:28 +0000 | [diff] [blame] | 2789 | |
| 2790 | #if defined _MSC_VER || defined __MINGW32__ |
| 2791 | if(unlink(filename) < 0) { |
| 2792 | cleanup_tempfile_(tempfile, tempfilename); |
| 2793 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_UNLINK_ERROR; |
| 2794 | return false; |
| 2795 | } |
| 2796 | #endif |
| 2797 | |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2798 | /*@@@ to fully support the tempfile_path_prefix we need to update this piece to actually copy across filesystems instead of just rename(): */ |
| 2799 | if(0 != rename(*tempfilename, filename)) { |
| 2800 | cleanup_tempfile_(tempfile, tempfilename); |
| 2801 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_RENAME_ERROR; |
| 2802 | return false; |
| 2803 | } |
| 2804 | |
| 2805 | cleanup_tempfile_(tempfile, tempfilename); |
| 2806 | |
| 2807 | return true; |
| 2808 | } |
| 2809 | |
| 2810 | void cleanup_tempfile_(FILE **tempfile, char **tempfilename) |
| 2811 | { |
| 2812 | if(0 != *tempfile) { |
| 2813 | (void)fclose(*tempfile); |
| 2814 | *tempfile = 0; |
| 2815 | } |
| 2816 | |
| 2817 | if(0 != *tempfilename) { |
| 2818 | (void)unlink(*tempfilename); |
| 2819 | free(*tempfilename); |
| 2820 | *tempfilename = 0; |
| 2821 | } |
| 2822 | } |
| 2823 | |
| 2824 | FLAC__bool get_file_stats_(const char *filename, struct stat *stats) |
| 2825 | { |
| 2826 | FLAC__ASSERT(0 != filename); |
| 2827 | FLAC__ASSERT(0 != stats); |
| 2828 | return (0 == stat(filename, stats)); |
| 2829 | } |
| 2830 | |
| 2831 | void set_file_stats_(const char *filename, struct stat *stats) |
| 2832 | { |
| 2833 | struct utimbuf srctime; |
| 2834 | |
| 2835 | FLAC__ASSERT(0 != filename); |
| 2836 | FLAC__ASSERT(0 != stats); |
| 2837 | |
| 2838 | srctime.actime = stats->st_atime; |
| 2839 | srctime.modtime = stats->st_mtime; |
| 2840 | (void)chmod(filename, stats->st_mode); |
| 2841 | (void)utime(filename, &srctime); |
| 2842 | #if !defined _MSC_VER && !defined __MINGW32__ |
| 2843 | (void)chown(filename, stats->st_uid, -1); |
| 2844 | (void)chown(filename, -1, stats->st_gid); |
| 2845 | #endif |
| 2846 | } |
| 2847 | |
Josh Coalson | ea25cb3 | 2004-07-10 00:39:01 +0000 | [diff] [blame] | 2848 | /* @@@ WATCHOUT @@@ |
| 2849 | * We cast FLAC__int64 to long and use fseek()/ftell() because |
| 2850 | * none of our operations on metadata is ever likely to go past |
| 2851 | * 2 gigabytes. |
| 2852 | */ |
| 2853 | int fseek_wrapper_(FLAC__IOHandle handle, FLAC__int64 offset, int whence) |
| 2854 | { |
| 2855 | FLAC__ASSERT(offset <= 0x7fffffff); |
| 2856 | return fseek((FILE*)handle, (long)offset, whence); |
| 2857 | } |
| 2858 | |
| 2859 | FLAC__int64 ftell_wrapper_(FLAC__IOHandle handle) |
| 2860 | { |
| 2861 | return (long)ftell((FILE*)handle); |
| 2862 | } |
| 2863 | |
Josh Coalson | cc68251 | 2002-06-08 04:53:42 +0000 | [diff] [blame] | 2864 | FLAC__Metadata_ChainStatus get_equivalent_status_(FLAC__Metadata_SimpleIteratorStatus status) |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2865 | { |
| 2866 | switch(status) { |
| 2867 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK: |
| 2868 | return FLAC__METADATA_CHAIN_STATUS_OK; |
| 2869 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ILLEGAL_INPUT: |
| 2870 | return FLAC__METADATA_CHAIN_STATUS_ILLEGAL_INPUT; |
| 2871 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ERROR_OPENING_FILE: |
| 2872 | return FLAC__METADATA_CHAIN_STATUS_ERROR_OPENING_FILE; |
| 2873 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_A_FLAC_FILE: |
| 2874 | return FLAC__METADATA_CHAIN_STATUS_NOT_A_FLAC_FILE; |
| 2875 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_WRITABLE: |
| 2876 | return FLAC__METADATA_CHAIN_STATUS_NOT_WRITABLE; |
Josh Coalson | a7b673c | 2002-05-25 02:13:38 +0000 | [diff] [blame] | 2877 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_BAD_METADATA: |
| 2878 | return FLAC__METADATA_CHAIN_STATUS_BAD_METADATA; |
Josh Coalson | cae5873 | 2002-05-04 17:30:32 +0000 | [diff] [blame] | 2879 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR: |
| 2880 | return FLAC__METADATA_CHAIN_STATUS_READ_ERROR; |
| 2881 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR: |
| 2882 | return FLAC__METADATA_CHAIN_STATUS_SEEK_ERROR; |
| 2883 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_WRITE_ERROR: |
| 2884 | return FLAC__METADATA_CHAIN_STATUS_WRITE_ERROR; |
| 2885 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_RENAME_ERROR: |
| 2886 | return FLAC__METADATA_CHAIN_STATUS_RENAME_ERROR; |
| 2887 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_UNLINK_ERROR: |
| 2888 | return FLAC__METADATA_CHAIN_STATUS_UNLINK_ERROR; |
| 2889 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR: |
| 2890 | return FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR; |
| 2891 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_INTERNAL_ERROR: |
| 2892 | default: |
| 2893 | return FLAC__METADATA_CHAIN_STATUS_INTERNAL_ERROR; |
| 2894 | } |
| 2895 | } |