Kenny Root | c746637 | 2009-11-08 12:46:32 -0600 | [diff] [blame] | 1 | /* libFLAC - Free Lossless Audio Codec library |
Robert Shih | 31e4f31 | 2015-01-05 17:35:54 -0800 | [diff] [blame] | 2 | * Copyright (C) 2000-2009 Josh Coalson |
Elliott Hughes | ae0e7bc | 2018-01-12 14:46:04 -0800 | [diff] [blame] | 3 | * Copyright (C) 2011-2016 Xiph.Org Foundation |
Kenny Root | c746637 | 2009-11-08 12:46:32 -0600 | [diff] [blame] | 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * |
| 9 | * - Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * |
| 12 | * - Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * - Neither the name of the Xiph.org Foundation nor the names of its |
| 17 | * contributors may be used to endorse or promote products derived from |
| 18 | * this software without specific prior written permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 21 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 22 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 23 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
| 24 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 25 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 26 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 27 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 28 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 29 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 30 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | */ |
| 32 | |
Robert Shih | 31e4f31 | 2015-01-05 17:35:54 -0800 | [diff] [blame] | 33 | #ifdef HAVE_CONFIG_H |
Kenny Root | c746637 | 2009-11-08 12:46:32 -0600 | [diff] [blame] | 34 | # include <config.h> |
| 35 | #endif |
| 36 | |
| 37 | #include <stdio.h> |
| 38 | #include <string.h> /* for strlen() */ |
| 39 | #include "private/stream_encoder_framing.h" |
| 40 | #include "private/crc.h" |
| 41 | #include "FLAC/assert.h" |
Elliott Hughes | ae0e7bc | 2018-01-12 14:46:04 -0800 | [diff] [blame] | 42 | #include "share/compat.h" |
Kenny Root | c746637 | 2009-11-08 12:46:32 -0600 | [diff] [blame] | 43 | |
Kenny Root | c746637 | 2009-11-08 12:46:32 -0600 | [diff] [blame] | 44 | static FLAC__bool add_entropy_coding_method_(FLAC__BitWriter *bw, const FLAC__EntropyCodingMethod *method); |
| 45 | static FLAC__bool add_residual_partitioned_rice_(FLAC__BitWriter *bw, const FLAC__int32 residual[], const unsigned residual_samples, const unsigned predictor_order, const unsigned rice_parameters[], const unsigned raw_bits[], const unsigned partition_order, const FLAC__bool is_extended); |
| 46 | |
| 47 | FLAC__bool FLAC__add_metadata_block(const FLAC__StreamMetadata *metadata, FLAC__BitWriter *bw) |
| 48 | { |
| 49 | unsigned i, j; |
| 50 | const unsigned vendor_string_length = (unsigned)strlen(FLAC__VENDOR_STRING); |
| 51 | |
| 52 | if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->is_last, FLAC__STREAM_METADATA_IS_LAST_LEN)) |
| 53 | return false; |
| 54 | |
| 55 | if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->type, FLAC__STREAM_METADATA_TYPE_LEN)) |
| 56 | return false; |
| 57 | |
| 58 | /* |
| 59 | * First, for VORBIS_COMMENTs, adjust the length to reflect our vendor string |
| 60 | */ |
| 61 | i = metadata->length; |
| 62 | if(metadata->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) { |
| 63 | FLAC__ASSERT(metadata->data.vorbis_comment.vendor_string.length == 0 || 0 != metadata->data.vorbis_comment.vendor_string.entry); |
| 64 | i -= metadata->data.vorbis_comment.vendor_string.length; |
| 65 | i += vendor_string_length; |
| 66 | } |
| 67 | FLAC__ASSERT(i < (1u << FLAC__STREAM_METADATA_LENGTH_LEN)); |
Elliott Hughes | ae0e7bc | 2018-01-12 14:46:04 -0800 | [diff] [blame] | 68 | /* double protection */ |
| 69 | if(i >= (1u << FLAC__STREAM_METADATA_LENGTH_LEN)) |
| 70 | return false; |
Kenny Root | c746637 | 2009-11-08 12:46:32 -0600 | [diff] [blame] | 71 | if(!FLAC__bitwriter_write_raw_uint32(bw, i, FLAC__STREAM_METADATA_LENGTH_LEN)) |
| 72 | return false; |
| 73 | |
| 74 | switch(metadata->type) { |
| 75 | case FLAC__METADATA_TYPE_STREAMINFO: |
| 76 | FLAC__ASSERT(metadata->data.stream_info.min_blocksize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN)); |
| 77 | if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.min_blocksize, FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN)) |
| 78 | return false; |
| 79 | FLAC__ASSERT(metadata->data.stream_info.max_blocksize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN)); |
| 80 | if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.max_blocksize, FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN)) |
| 81 | return false; |
| 82 | FLAC__ASSERT(metadata->data.stream_info.min_framesize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN)); |
| 83 | if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.min_framesize, FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN)) |
| 84 | return false; |
| 85 | FLAC__ASSERT(metadata->data.stream_info.max_framesize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN)); |
| 86 | if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.max_framesize, FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN)) |
| 87 | return false; |
| 88 | FLAC__ASSERT(FLAC__format_sample_rate_is_valid(metadata->data.stream_info.sample_rate)); |
| 89 | if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.sample_rate, FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN)) |
| 90 | return false; |
| 91 | FLAC__ASSERT(metadata->data.stream_info.channels > 0); |
| 92 | FLAC__ASSERT(metadata->data.stream_info.channels <= (1u << FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN)); |
| 93 | if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.channels-1, FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN)) |
| 94 | return false; |
| 95 | FLAC__ASSERT(metadata->data.stream_info.bits_per_sample > 0); |
| 96 | FLAC__ASSERT(metadata->data.stream_info.bits_per_sample <= (1u << FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN)); |
| 97 | if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.bits_per_sample-1, FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN)) |
| 98 | return false; |
Elliott Hughes | ae0e7bc | 2018-01-12 14:46:04 -0800 | [diff] [blame] | 99 | FLAC__ASSERT(metadata->data.stream_info.total_samples < (FLAC__U64L(1) << FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN)); |
Kenny Root | c746637 | 2009-11-08 12:46:32 -0600 | [diff] [blame] | 100 | if(!FLAC__bitwriter_write_raw_uint64(bw, metadata->data.stream_info.total_samples, FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN)) |
| 101 | return false; |
| 102 | if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.stream_info.md5sum, 16)) |
| 103 | return false; |
| 104 | break; |
| 105 | case FLAC__METADATA_TYPE_PADDING: |
| 106 | if(!FLAC__bitwriter_write_zeroes(bw, metadata->length * 8)) |
| 107 | return false; |
| 108 | break; |
| 109 | case FLAC__METADATA_TYPE_APPLICATION: |
| 110 | if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.application.id, FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8)) |
| 111 | return false; |
| 112 | if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.application.data, metadata->length - (FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8))) |
| 113 | return false; |
| 114 | break; |
| 115 | case FLAC__METADATA_TYPE_SEEKTABLE: |
| 116 | for(i = 0; i < metadata->data.seek_table.num_points; i++) { |
| 117 | if(!FLAC__bitwriter_write_raw_uint64(bw, metadata->data.seek_table.points[i].sample_number, FLAC__STREAM_METADATA_SEEKPOINT_SAMPLE_NUMBER_LEN)) |
| 118 | return false; |
| 119 | if(!FLAC__bitwriter_write_raw_uint64(bw, metadata->data.seek_table.points[i].stream_offset, FLAC__STREAM_METADATA_SEEKPOINT_STREAM_OFFSET_LEN)) |
| 120 | return false; |
| 121 | if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.seek_table.points[i].frame_samples, FLAC__STREAM_METADATA_SEEKPOINT_FRAME_SAMPLES_LEN)) |
| 122 | return false; |
| 123 | } |
| 124 | break; |
| 125 | case FLAC__METADATA_TYPE_VORBIS_COMMENT: |
| 126 | if(!FLAC__bitwriter_write_raw_uint32_little_endian(bw, vendor_string_length)) |
| 127 | return false; |
| 128 | if(!FLAC__bitwriter_write_byte_block(bw, (const FLAC__byte*)FLAC__VENDOR_STRING, vendor_string_length)) |
| 129 | return false; |
| 130 | if(!FLAC__bitwriter_write_raw_uint32_little_endian(bw, metadata->data.vorbis_comment.num_comments)) |
| 131 | return false; |
| 132 | for(i = 0; i < metadata->data.vorbis_comment.num_comments; i++) { |
| 133 | if(!FLAC__bitwriter_write_raw_uint32_little_endian(bw, metadata->data.vorbis_comment.comments[i].length)) |
| 134 | return false; |
| 135 | if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.vorbis_comment.comments[i].entry, metadata->data.vorbis_comment.comments[i].length)) |
| 136 | return false; |
| 137 | } |
| 138 | break; |
| 139 | case FLAC__METADATA_TYPE_CUESHEET: |
| 140 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN % 8 == 0); |
| 141 | if(!FLAC__bitwriter_write_byte_block(bw, (const FLAC__byte*)metadata->data.cue_sheet.media_catalog_number, FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN/8)) |
| 142 | return false; |
| 143 | if(!FLAC__bitwriter_write_raw_uint64(bw, metadata->data.cue_sheet.lead_in, FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN)) |
| 144 | return false; |
| 145 | if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.cue_sheet.is_cd? 1 : 0, FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN)) |
| 146 | return false; |
| 147 | if(!FLAC__bitwriter_write_zeroes(bw, FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN)) |
| 148 | return false; |
| 149 | if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.cue_sheet.num_tracks, FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN)) |
| 150 | return false; |
| 151 | for(i = 0; i < metadata->data.cue_sheet.num_tracks; i++) { |
| 152 | const FLAC__StreamMetadata_CueSheet_Track *track = metadata->data.cue_sheet.tracks + i; |
| 153 | |
| 154 | if(!FLAC__bitwriter_write_raw_uint64(bw, track->offset, FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN)) |
| 155 | return false; |
| 156 | if(!FLAC__bitwriter_write_raw_uint32(bw, track->number, FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN)) |
| 157 | return false; |
| 158 | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN % 8 == 0); |
| 159 | if(!FLAC__bitwriter_write_byte_block(bw, (const FLAC__byte*)track->isrc, FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN/8)) |
| 160 | return false; |
| 161 | if(!FLAC__bitwriter_write_raw_uint32(bw, track->type, FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN)) |
| 162 | return false; |
| 163 | if(!FLAC__bitwriter_write_raw_uint32(bw, track->pre_emphasis, FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN)) |
| 164 | return false; |
| 165 | if(!FLAC__bitwriter_write_zeroes(bw, FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN)) |
| 166 | return false; |
| 167 | if(!FLAC__bitwriter_write_raw_uint32(bw, track->num_indices, FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN)) |
| 168 | return false; |
| 169 | for(j = 0; j < track->num_indices; j++) { |
Robert Shih | 31e4f31 | 2015-01-05 17:35:54 -0800 | [diff] [blame] | 170 | const FLAC__StreamMetadata_CueSheet_Index *indx = track->indices + j; |
Kenny Root | c746637 | 2009-11-08 12:46:32 -0600 | [diff] [blame] | 171 | |
Robert Shih | 31e4f31 | 2015-01-05 17:35:54 -0800 | [diff] [blame] | 172 | if(!FLAC__bitwriter_write_raw_uint64(bw, indx->offset, FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN)) |
Kenny Root | c746637 | 2009-11-08 12:46:32 -0600 | [diff] [blame] | 173 | return false; |
Robert Shih | 31e4f31 | 2015-01-05 17:35:54 -0800 | [diff] [blame] | 174 | if(!FLAC__bitwriter_write_raw_uint32(bw, indx->number, FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN)) |
Kenny Root | c746637 | 2009-11-08 12:46:32 -0600 | [diff] [blame] | 175 | return false; |
| 176 | if(!FLAC__bitwriter_write_zeroes(bw, FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN)) |
| 177 | return false; |
| 178 | } |
| 179 | } |
| 180 | break; |
| 181 | case FLAC__METADATA_TYPE_PICTURE: |
| 182 | { |
| 183 | size_t len; |
| 184 | if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.type, FLAC__STREAM_METADATA_PICTURE_TYPE_LEN)) |
| 185 | return false; |
| 186 | len = strlen(metadata->data.picture.mime_type); |
| 187 | if(!FLAC__bitwriter_write_raw_uint32(bw, len, FLAC__STREAM_METADATA_PICTURE_MIME_TYPE_LENGTH_LEN)) |
| 188 | return false; |
| 189 | if(!FLAC__bitwriter_write_byte_block(bw, (const FLAC__byte*)metadata->data.picture.mime_type, len)) |
| 190 | return false; |
| 191 | len = strlen((const char *)metadata->data.picture.description); |
| 192 | if(!FLAC__bitwriter_write_raw_uint32(bw, len, FLAC__STREAM_METADATA_PICTURE_DESCRIPTION_LENGTH_LEN)) |
| 193 | return false; |
| 194 | if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.picture.description, len)) |
| 195 | return false; |
| 196 | if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.width, FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN)) |
| 197 | return false; |
| 198 | if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.height, FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN)) |
| 199 | return false; |
| 200 | if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.depth, FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN)) |
| 201 | return false; |
| 202 | if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.colors, FLAC__STREAM_METADATA_PICTURE_COLORS_LEN)) |
| 203 | return false; |
| 204 | if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.data_length, FLAC__STREAM_METADATA_PICTURE_DATA_LENGTH_LEN)) |
| 205 | return false; |
| 206 | if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.picture.data, metadata->data.picture.data_length)) |
| 207 | return false; |
| 208 | } |
| 209 | break; |
| 210 | default: |
| 211 | if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.unknown.data, metadata->length)) |
| 212 | return false; |
| 213 | break; |
| 214 | } |
| 215 | |
| 216 | FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(bw)); |
| 217 | return true; |
| 218 | } |
| 219 | |
| 220 | FLAC__bool FLAC__frame_add_header(const FLAC__FrameHeader *header, FLAC__BitWriter *bw) |
| 221 | { |
| 222 | unsigned u, blocksize_hint, sample_rate_hint; |
| 223 | FLAC__byte crc; |
| 224 | |
| 225 | FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(bw)); |
| 226 | |
| 227 | if(!FLAC__bitwriter_write_raw_uint32(bw, FLAC__FRAME_HEADER_SYNC, FLAC__FRAME_HEADER_SYNC_LEN)) |
| 228 | return false; |
| 229 | |
| 230 | if(!FLAC__bitwriter_write_raw_uint32(bw, 0, FLAC__FRAME_HEADER_RESERVED_LEN)) |
| 231 | return false; |
| 232 | |
| 233 | if(!FLAC__bitwriter_write_raw_uint32(bw, (header->number_type == FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER)? 0 : 1, FLAC__FRAME_HEADER_BLOCKING_STRATEGY_LEN)) |
| 234 | return false; |
| 235 | |
| 236 | FLAC__ASSERT(header->blocksize > 0 && header->blocksize <= FLAC__MAX_BLOCK_SIZE); |
| 237 | /* when this assertion holds true, any legal blocksize can be expressed in the frame header */ |
| 238 | FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535u); |
| 239 | blocksize_hint = 0; |
| 240 | switch(header->blocksize) { |
| 241 | case 192: u = 1; break; |
| 242 | case 576: u = 2; break; |
| 243 | case 1152: u = 3; break; |
| 244 | case 2304: u = 4; break; |
| 245 | case 4608: u = 5; break; |
| 246 | case 256: u = 8; break; |
| 247 | case 512: u = 9; break; |
| 248 | case 1024: u = 10; break; |
| 249 | case 2048: u = 11; break; |
| 250 | case 4096: u = 12; break; |
| 251 | case 8192: u = 13; break; |
| 252 | case 16384: u = 14; break; |
| 253 | case 32768: u = 15; break; |
| 254 | default: |
| 255 | if(header->blocksize <= 0x100) |
| 256 | blocksize_hint = u = 6; |
| 257 | else |
| 258 | blocksize_hint = u = 7; |
| 259 | break; |
| 260 | } |
| 261 | if(!FLAC__bitwriter_write_raw_uint32(bw, u, FLAC__FRAME_HEADER_BLOCK_SIZE_LEN)) |
| 262 | return false; |
| 263 | |
| 264 | FLAC__ASSERT(FLAC__format_sample_rate_is_valid(header->sample_rate)); |
| 265 | sample_rate_hint = 0; |
| 266 | switch(header->sample_rate) { |
| 267 | case 88200: u = 1; break; |
| 268 | case 176400: u = 2; break; |
| 269 | case 192000: u = 3; break; |
| 270 | case 8000: u = 4; break; |
| 271 | case 16000: u = 5; break; |
| 272 | case 22050: u = 6; break; |
| 273 | case 24000: u = 7; break; |
| 274 | case 32000: u = 8; break; |
| 275 | case 44100: u = 9; break; |
| 276 | case 48000: u = 10; break; |
| 277 | case 96000: u = 11; break; |
| 278 | default: |
| 279 | if(header->sample_rate <= 255000 && header->sample_rate % 1000 == 0) |
| 280 | sample_rate_hint = u = 12; |
| 281 | else if(header->sample_rate % 10 == 0) |
| 282 | sample_rate_hint = u = 14; |
| 283 | else if(header->sample_rate <= 0xffff) |
| 284 | sample_rate_hint = u = 13; |
| 285 | else |
| 286 | u = 0; |
| 287 | break; |
| 288 | } |
| 289 | if(!FLAC__bitwriter_write_raw_uint32(bw, u, FLAC__FRAME_HEADER_SAMPLE_RATE_LEN)) |
| 290 | return false; |
| 291 | |
| 292 | FLAC__ASSERT(header->channels > 0 && header->channels <= (1u << FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN) && header->channels <= FLAC__MAX_CHANNELS); |
| 293 | switch(header->channel_assignment) { |
| 294 | case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT: |
| 295 | u = header->channels - 1; |
| 296 | break; |
| 297 | case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE: |
| 298 | FLAC__ASSERT(header->channels == 2); |
| 299 | u = 8; |
| 300 | break; |
| 301 | case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE: |
| 302 | FLAC__ASSERT(header->channels == 2); |
| 303 | u = 9; |
| 304 | break; |
| 305 | case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE: |
| 306 | FLAC__ASSERT(header->channels == 2); |
| 307 | u = 10; |
| 308 | break; |
| 309 | default: |
| 310 | FLAC__ASSERT(0); |
| 311 | } |
| 312 | if(!FLAC__bitwriter_write_raw_uint32(bw, u, FLAC__FRAME_HEADER_CHANNEL_ASSIGNMENT_LEN)) |
| 313 | return false; |
| 314 | |
| 315 | FLAC__ASSERT(header->bits_per_sample > 0 && header->bits_per_sample <= (1u << FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN)); |
| 316 | switch(header->bits_per_sample) { |
| 317 | case 8 : u = 1; break; |
| 318 | case 12: u = 2; break; |
| 319 | case 16: u = 4; break; |
| 320 | case 20: u = 5; break; |
| 321 | case 24: u = 6; break; |
| 322 | default: u = 0; break; |
| 323 | } |
| 324 | if(!FLAC__bitwriter_write_raw_uint32(bw, u, FLAC__FRAME_HEADER_BITS_PER_SAMPLE_LEN)) |
| 325 | return false; |
| 326 | |
| 327 | if(!FLAC__bitwriter_write_raw_uint32(bw, 0, FLAC__FRAME_HEADER_ZERO_PAD_LEN)) |
| 328 | return false; |
| 329 | |
| 330 | if(header->number_type == FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER) { |
| 331 | if(!FLAC__bitwriter_write_utf8_uint32(bw, header->number.frame_number)) |
| 332 | return false; |
| 333 | } |
| 334 | else { |
| 335 | if(!FLAC__bitwriter_write_utf8_uint64(bw, header->number.sample_number)) |
| 336 | return false; |
| 337 | } |
| 338 | |
| 339 | if(blocksize_hint) |
| 340 | if(!FLAC__bitwriter_write_raw_uint32(bw, header->blocksize-1, (blocksize_hint==6)? 8:16)) |
| 341 | return false; |
| 342 | |
| 343 | switch(sample_rate_hint) { |
| 344 | case 12: |
| 345 | if(!FLAC__bitwriter_write_raw_uint32(bw, header->sample_rate / 1000, 8)) |
| 346 | return false; |
| 347 | break; |
| 348 | case 13: |
| 349 | if(!FLAC__bitwriter_write_raw_uint32(bw, header->sample_rate, 16)) |
| 350 | return false; |
| 351 | break; |
| 352 | case 14: |
| 353 | if(!FLAC__bitwriter_write_raw_uint32(bw, header->sample_rate / 10, 16)) |
| 354 | return false; |
| 355 | break; |
| 356 | } |
| 357 | |
| 358 | /* write the CRC */ |
| 359 | if(!FLAC__bitwriter_get_write_crc8(bw, &crc)) |
| 360 | return false; |
| 361 | if(!FLAC__bitwriter_write_raw_uint32(bw, crc, FLAC__FRAME_HEADER_CRC_LEN)) |
| 362 | return false; |
| 363 | |
| 364 | return true; |
| 365 | } |
| 366 | |
| 367 | FLAC__bool FLAC__subframe_add_constant(const FLAC__Subframe_Constant *subframe, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitWriter *bw) |
| 368 | { |
| 369 | FLAC__bool ok; |
| 370 | |
| 371 | ok = |
| 372 | FLAC__bitwriter_write_raw_uint32(bw, FLAC__SUBFRAME_TYPE_CONSTANT_BYTE_ALIGNED_MASK | (wasted_bits? 1:0), FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN) && |
| 373 | (wasted_bits? FLAC__bitwriter_write_unary_unsigned(bw, wasted_bits-1) : true) && |
| 374 | FLAC__bitwriter_write_raw_int32(bw, subframe->value, subframe_bps) |
| 375 | ; |
| 376 | |
| 377 | return ok; |
| 378 | } |
| 379 | |
| 380 | FLAC__bool FLAC__subframe_add_fixed(const FLAC__Subframe_Fixed *subframe, unsigned residual_samples, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitWriter *bw) |
| 381 | { |
| 382 | unsigned i; |
| 383 | |
| 384 | if(!FLAC__bitwriter_write_raw_uint32(bw, FLAC__SUBFRAME_TYPE_FIXED_BYTE_ALIGNED_MASK | (subframe->order<<1) | (wasted_bits? 1:0), FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN)) |
| 385 | return false; |
| 386 | if(wasted_bits) |
| 387 | if(!FLAC__bitwriter_write_unary_unsigned(bw, wasted_bits-1)) |
| 388 | return false; |
| 389 | |
| 390 | for(i = 0; i < subframe->order; i++) |
| 391 | if(!FLAC__bitwriter_write_raw_int32(bw, subframe->warmup[i], subframe_bps)) |
| 392 | return false; |
| 393 | |
| 394 | if(!add_entropy_coding_method_(bw, &subframe->entropy_coding_method)) |
| 395 | return false; |
| 396 | switch(subframe->entropy_coding_method.type) { |
| 397 | case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE: |
| 398 | case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2: |
| 399 | if(!add_residual_partitioned_rice_( |
| 400 | bw, |
| 401 | subframe->residual, |
| 402 | residual_samples, |
| 403 | subframe->order, |
| 404 | subframe->entropy_coding_method.data.partitioned_rice.contents->parameters, |
| 405 | subframe->entropy_coding_method.data.partitioned_rice.contents->raw_bits, |
| 406 | subframe->entropy_coding_method.data.partitioned_rice.order, |
| 407 | /*is_extended=*/subframe->entropy_coding_method.type == FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2 |
| 408 | )) |
| 409 | return false; |
| 410 | break; |
| 411 | default: |
| 412 | FLAC__ASSERT(0); |
| 413 | } |
| 414 | |
| 415 | return true; |
| 416 | } |
| 417 | |
| 418 | FLAC__bool FLAC__subframe_add_lpc(const FLAC__Subframe_LPC *subframe, unsigned residual_samples, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitWriter *bw) |
| 419 | { |
| 420 | unsigned i; |
| 421 | |
| 422 | if(!FLAC__bitwriter_write_raw_uint32(bw, FLAC__SUBFRAME_TYPE_LPC_BYTE_ALIGNED_MASK | ((subframe->order-1)<<1) | (wasted_bits? 1:0), FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN)) |
| 423 | return false; |
| 424 | if(wasted_bits) |
| 425 | if(!FLAC__bitwriter_write_unary_unsigned(bw, wasted_bits-1)) |
| 426 | return false; |
| 427 | |
| 428 | for(i = 0; i < subframe->order; i++) |
| 429 | if(!FLAC__bitwriter_write_raw_int32(bw, subframe->warmup[i], subframe_bps)) |
| 430 | return false; |
| 431 | |
| 432 | if(!FLAC__bitwriter_write_raw_uint32(bw, subframe->qlp_coeff_precision-1, FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN)) |
| 433 | return false; |
| 434 | if(!FLAC__bitwriter_write_raw_int32(bw, subframe->quantization_level, FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN)) |
| 435 | return false; |
| 436 | for(i = 0; i < subframe->order; i++) |
| 437 | if(!FLAC__bitwriter_write_raw_int32(bw, subframe->qlp_coeff[i], subframe->qlp_coeff_precision)) |
| 438 | return false; |
| 439 | |
| 440 | if(!add_entropy_coding_method_(bw, &subframe->entropy_coding_method)) |
| 441 | return false; |
| 442 | switch(subframe->entropy_coding_method.type) { |
| 443 | case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE: |
| 444 | case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2: |
| 445 | if(!add_residual_partitioned_rice_( |
| 446 | bw, |
| 447 | subframe->residual, |
| 448 | residual_samples, |
| 449 | subframe->order, |
| 450 | subframe->entropy_coding_method.data.partitioned_rice.contents->parameters, |
| 451 | subframe->entropy_coding_method.data.partitioned_rice.contents->raw_bits, |
| 452 | subframe->entropy_coding_method.data.partitioned_rice.order, |
| 453 | /*is_extended=*/subframe->entropy_coding_method.type == FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2 |
| 454 | )) |
| 455 | return false; |
| 456 | break; |
| 457 | default: |
| 458 | FLAC__ASSERT(0); |
| 459 | } |
| 460 | |
| 461 | return true; |
| 462 | } |
| 463 | |
| 464 | FLAC__bool FLAC__subframe_add_verbatim(const FLAC__Subframe_Verbatim *subframe, unsigned samples, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitWriter *bw) |
| 465 | { |
| 466 | unsigned i; |
| 467 | const FLAC__int32 *signal = subframe->data; |
| 468 | |
| 469 | if(!FLAC__bitwriter_write_raw_uint32(bw, FLAC__SUBFRAME_TYPE_VERBATIM_BYTE_ALIGNED_MASK | (wasted_bits? 1:0), FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN)) |
| 470 | return false; |
| 471 | if(wasted_bits) |
| 472 | if(!FLAC__bitwriter_write_unary_unsigned(bw, wasted_bits-1)) |
| 473 | return false; |
| 474 | |
| 475 | for(i = 0; i < samples; i++) |
| 476 | if(!FLAC__bitwriter_write_raw_int32(bw, signal[i], subframe_bps)) |
| 477 | return false; |
| 478 | |
| 479 | return true; |
| 480 | } |
| 481 | |
| 482 | FLAC__bool add_entropy_coding_method_(FLAC__BitWriter *bw, const FLAC__EntropyCodingMethod *method) |
| 483 | { |
| 484 | if(!FLAC__bitwriter_write_raw_uint32(bw, method->type, FLAC__ENTROPY_CODING_METHOD_TYPE_LEN)) |
| 485 | return false; |
| 486 | switch(method->type) { |
| 487 | case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE: |
| 488 | case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2: |
| 489 | if(!FLAC__bitwriter_write_raw_uint32(bw, method->data.partitioned_rice.order, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN)) |
| 490 | return false; |
| 491 | break; |
| 492 | default: |
| 493 | FLAC__ASSERT(0); |
| 494 | } |
| 495 | return true; |
| 496 | } |
| 497 | |
| 498 | FLAC__bool add_residual_partitioned_rice_(FLAC__BitWriter *bw, const FLAC__int32 residual[], const unsigned residual_samples, const unsigned predictor_order, const unsigned rice_parameters[], const unsigned raw_bits[], const unsigned partition_order, const FLAC__bool is_extended) |
| 499 | { |
| 500 | const unsigned plen = is_extended? FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN : FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN; |
| 501 | const unsigned pesc = is_extended? FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER : FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER; |
| 502 | |
| 503 | if(partition_order == 0) { |
| 504 | unsigned i; |
| 505 | |
| 506 | if(raw_bits[0] == 0) { |
| 507 | if(!FLAC__bitwriter_write_raw_uint32(bw, rice_parameters[0], plen)) |
| 508 | return false; |
| 509 | if(!FLAC__bitwriter_write_rice_signed_block(bw, residual, residual_samples, rice_parameters[0])) |
| 510 | return false; |
| 511 | } |
| 512 | else { |
| 513 | FLAC__ASSERT(rice_parameters[0] == 0); |
| 514 | if(!FLAC__bitwriter_write_raw_uint32(bw, pesc, plen)) |
| 515 | return false; |
| 516 | if(!FLAC__bitwriter_write_raw_uint32(bw, raw_bits[0], FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN)) |
| 517 | return false; |
| 518 | for(i = 0; i < residual_samples; i++) { |
| 519 | if(!FLAC__bitwriter_write_raw_int32(bw, residual[i], raw_bits[0])) |
| 520 | return false; |
| 521 | } |
| 522 | } |
| 523 | return true; |
| 524 | } |
| 525 | else { |
| 526 | unsigned i, j, k = 0, k_last = 0; |
| 527 | unsigned partition_samples; |
| 528 | const unsigned default_partition_samples = (residual_samples+predictor_order) >> partition_order; |
| 529 | for(i = 0; i < (1u<<partition_order); i++) { |
| 530 | partition_samples = default_partition_samples; |
| 531 | if(i == 0) |
| 532 | partition_samples -= predictor_order; |
| 533 | k += partition_samples; |
| 534 | if(raw_bits[i] == 0) { |
| 535 | if(!FLAC__bitwriter_write_raw_uint32(bw, rice_parameters[i], plen)) |
| 536 | return false; |
| 537 | if(!FLAC__bitwriter_write_rice_signed_block(bw, residual+k_last, k-k_last, rice_parameters[i])) |
| 538 | return false; |
| 539 | } |
| 540 | else { |
| 541 | if(!FLAC__bitwriter_write_raw_uint32(bw, pesc, plen)) |
| 542 | return false; |
| 543 | if(!FLAC__bitwriter_write_raw_uint32(bw, raw_bits[i], FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN)) |
| 544 | return false; |
| 545 | for(j = k_last; j < k; j++) { |
| 546 | if(!FLAC__bitwriter_write_raw_int32(bw, residual[j], raw_bits[i])) |
| 547 | return false; |
| 548 | } |
| 549 | } |
| 550 | k_last = k; |
| 551 | } |
| 552 | return true; |
| 553 | } |
| 554 | } |