| /* libxmms-flac - XMMS FLAC input plugin |
| * Copyright (C) 2000,2001,2002,2003,2004,2005 Josh Coalson |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| */ |
| |
| #include <pthread.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <stdio.h> |
| #include <glib.h> |
| #include <pwd.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| |
| #include <xmms/plugin.h> |
| #include <xmms/util.h> |
| #include <xmms/configfile.h> |
| #include <xmms/titlestring.h> |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #ifdef HAVE_LANGINFO_CODESET |
| #include <langinfo.h> |
| #endif |
| |
| #include "FLAC/all.h" |
| #include "plugin_common/all.h" |
| #include "share/grabbag.h" |
| #include "share/replaygain_synthesis.h" |
| #include "configure.h" |
| #include "charset.h" |
| #include "http.h" |
| #include "tag.h" |
| |
| #ifdef min |
| #undef min |
| #endif |
| #define min(x,y) ((x)<(y)?(x):(y)) |
| |
| /* adjust for compilers that can't understand using LLU suffix for uint64_t literals */ |
| #ifdef _MSC_VER |
| #define FLAC__U64L(x) x |
| #else |
| #define FLAC__U64L(x) x##LLU |
| #endif |
| |
| extern void FLAC_XMMS__file_info_box(char *filename); |
| |
| typedef struct { |
| FLAC__bool abort_flag; |
| FLAC__bool is_playing; |
| FLAC__bool eof; |
| FLAC__bool play_thread_open; /* if true, is_playing must also be true */ |
| unsigned total_samples; |
| unsigned bits_per_sample; |
| unsigned channels; |
| unsigned sample_rate; |
| unsigned length_in_msec; |
| gchar *title; |
| AFormat sample_format; |
| unsigned sample_format_bytes_per_sample; |
| int seek_to_in_sec; |
| FLAC__bool has_replaygain; |
| double replay_scale; |
| DitherContext dither_context; |
| } file_info_struct; |
| |
| typedef FLAC__StreamDecoderWriteStatus (*WriteCallback) (const void *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data); |
| typedef void (*MetadataCallback) (const void *decoder, const FLAC__StreamMetadata *metadata, void *client_data); |
| typedef void (*ErrorCallback) (const void *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data); |
| |
| typedef struct { |
| FLAC__bool seekable; |
| void* (*new_decoder) (void); |
| FLAC__bool (*set_md5_checking) (void *decoder, FLAC__bool value); |
| FLAC__bool (*set_source) (void *decoder, const char* source); |
| FLAC__bool (*set_metadata_ignore_all) (void *decoder); |
| FLAC__bool (*set_metadata_respond) (void *decoder, FLAC__MetadataType type); |
| FLAC__bool (*set_write_callback) (void *decoder, WriteCallback value); |
| FLAC__bool (*set_metadata_callback) (void *decoder, MetadataCallback value); |
| FLAC__bool (*set_error_callback) (void *decoder, ErrorCallback value); |
| FLAC__bool (*set_client_data) (void *decoder, void *value); |
| FLAC__bool (*decoder_init) (void *decoder); |
| void (*safe_decoder_finish) (void *decoder); |
| void (*safe_decoder_delete) (void *decoder); |
| FLAC__bool (*process_until_end_of_metadata) (void *decoder); |
| FLAC__bool (*process_single) (void *decoder); |
| FLAC__bool (*is_eof) (void *decoder); |
| } decoder_funcs_t; |
| |
| #define NUM_DECODER_TYPES 2 |
| typedef enum { |
| DECODER_FILE, |
| DECODER_HTTP |
| } decoder_t; |
| |
| static void FLAC_XMMS__init(); |
| static int FLAC_XMMS__is_our_file(char *filename); |
| static void FLAC_XMMS__play_file(char *filename); |
| static void FLAC_XMMS__stop(); |
| static void FLAC_XMMS__pause(short p); |
| static void FLAC_XMMS__seek(int time); |
| static int FLAC_XMMS__get_time(); |
| static void FLAC_XMMS__cleanup(); |
| static void FLAC_XMMS__get_song_info(char *filename, char **title, int *length); |
| |
| static void *play_loop_(void *arg); |
| |
| static FLAC__bool safe_decoder_init_(const char *filename, void **decoderp, decoder_funcs_t const ** fnsp); |
| static void file_decoder_safe_decoder_finish_(void *decoder); |
| static void file_decoder_safe_decoder_delete_(void *decoder); |
| static FLAC__StreamDecoderWriteStatus write_callback_(const void *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data); |
| static void metadata_callback_(const void *decoder, const FLAC__StreamMetadata *metadata, void *client_data); |
| static void error_callback_(const void *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data); |
| |
| static void init_decoder_func_tables(); |
| static decoder_t source_to_decoder_type (const char *source); |
| |
| InputPlugin flac_ip = |
| { |
| NULL, |
| NULL, |
| "Reference FLAC Player v" VERSION, |
| FLAC_XMMS__init, |
| FLAC_XMMS__aboutbox, |
| FLAC_XMMS__configure, |
| FLAC_XMMS__is_our_file, |
| NULL, |
| FLAC_XMMS__play_file, |
| FLAC_XMMS__stop, |
| FLAC_XMMS__pause, |
| FLAC_XMMS__seek, |
| NULL, |
| FLAC_XMMS__get_time, |
| NULL, |
| NULL, |
| FLAC_XMMS__cleanup, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| FLAC_XMMS__get_song_info, |
| FLAC_XMMS__file_info_box, |
| NULL |
| }; |
| |
| #define SAMPLES_PER_WRITE 512 |
| #define SAMPLE_BUFFER_SIZE ((FLAC__MAX_BLOCK_SIZE + SAMPLES_PER_WRITE) * FLAC_PLUGIN__MAX_SUPPORTED_CHANNELS * (24/8)) |
| static FLAC__byte sample_buffer_[SAMPLE_BUFFER_SIZE]; |
| static unsigned sample_buffer_first_, sample_buffer_last_; |
| |
| static void *decoder_ = 0; |
| static file_info_struct file_info_; |
| static pthread_t decode_thread_; |
| static FLAC__bool audio_error_ = false; |
| static FLAC__bool is_big_endian_host_; |
| |
| #define BITRATE_HIST_SEGMENT_MSEC 500 |
| /* 500ms * 50 = 25s should be enough */ |
| #define BITRATE_HIST_SIZE 50 |
| static unsigned bitrate_history_[BITRATE_HIST_SIZE]; |
| |
| /* A table of sets of decoder functions, indexed by decoder_t */ |
| static const decoder_funcs_t* DECODER_FUNCS[NUM_DECODER_TYPES]; |
| |
| static decoder_funcs_t const * decoder_func_table_; |
| |
| |
| InputPlugin *get_iplugin_info() |
| { |
| flac_ip.description = g_strdup_printf("Reference FLAC Player v%s", FLAC__VERSION_STRING); |
| return &flac_ip; |
| } |
| |
| void set_track_info(const char* title, int length_in_msec) |
| { |
| if (file_info_.is_playing) { |
| flac_ip.set_info((char*) title, length_in_msec, file_info_.sample_rate * file_info_.channels * file_info_.bits_per_sample, file_info_.sample_rate, file_info_.channels); |
| } |
| } |
| |
| static gchar* homedir() |
| { |
| gchar *result; |
| char *env_home = getenv("HOME"); |
| if (env_home) { |
| result = g_strdup (env_home); |
| } else { |
| uid_t uid = getuid(); |
| struct passwd *pwent; |
| do { |
| pwent = getpwent(); |
| } while (pwent && pwent->pw_uid != uid); |
| result = pwent ? g_strdup (pwent->pw_dir) : NULL; |
| endpwent(); |
| } |
| return result; |
| } |
| |
| void FLAC_XMMS__init() |
| { |
| ConfigFile *cfg; |
| FLAC__uint32 test = 1; |
| |
| is_big_endian_host_ = (*((FLAC__byte*)(&test)))? false : true; |
| |
| flac_cfg.title.tag_override = FALSE; |
| g_free(flac_cfg.title.tag_format); |
| flac_cfg.title.convert_char_set = FALSE; |
| |
| cfg = xmms_cfg_open_default_file(); |
| |
| /* title */ |
| |
| xmms_cfg_read_boolean(cfg, "flac", "title.tag_override", &flac_cfg.title.tag_override); |
| |
| if(!xmms_cfg_read_string(cfg, "flac", "title.tag_format", &flac_cfg.title.tag_format)) |
| flac_cfg.title.tag_format = g_strdup("%p - %t"); |
| |
| xmms_cfg_read_boolean(cfg, "flac", "title.convert_char_set", &flac_cfg.title.convert_char_set); |
| |
| if(!xmms_cfg_read_string(cfg, "flac", "title.user_char_set", &flac_cfg.title.user_char_set)) |
| flac_cfg.title.user_char_set = FLAC_plugin__charset_get_current(); |
| |
| /* replaygain */ |
| |
| xmms_cfg_read_boolean(cfg, "flac", "output.replaygain.enable", &flac_cfg.output.replaygain.enable); |
| |
| xmms_cfg_read_boolean(cfg, "flac", "output.replaygain.album_mode", &flac_cfg.output.replaygain.album_mode); |
| |
| if(!xmms_cfg_read_int(cfg, "flac", "output.replaygain.preamp", &flac_cfg.output.replaygain.preamp)) |
| flac_cfg.output.replaygain.preamp = 0; |
| |
| xmms_cfg_read_boolean(cfg, "flac", "output.replaygain.hard_limit", &flac_cfg.output.replaygain.hard_limit); |
| |
| xmms_cfg_read_boolean(cfg, "flac", "output.resolution.normal.dither_24_to_16", &flac_cfg.output.resolution.normal.dither_24_to_16); |
| xmms_cfg_read_boolean(cfg, "flac", "output.resolution.replaygain.dither", &flac_cfg.output.resolution.replaygain.dither); |
| |
| if(!xmms_cfg_read_int(cfg, "flac", "output.resolution.replaygain.noise_shaping", &flac_cfg.output.resolution.replaygain.noise_shaping)) |
| flac_cfg.output.resolution.replaygain.noise_shaping = 1; |
| |
| if(!xmms_cfg_read_int(cfg, "flac", "output.resolution.replaygain.bps_out", &flac_cfg.output.resolution.replaygain.bps_out)) |
| flac_cfg.output.resolution.replaygain.bps_out = 16; |
| |
| /* stream */ |
| |
| xmms_cfg_read_int(cfg, "flac", "stream.http_buffer_size", &flac_cfg.stream.http_buffer_size); |
| xmms_cfg_read_int(cfg, "flac", "stream.http_prebuffer", &flac_cfg.stream.http_prebuffer); |
| xmms_cfg_read_boolean(cfg, "flac", "stream.use_proxy", &flac_cfg.stream.use_proxy); |
| xmms_cfg_read_string(cfg, "flac", "stream.proxy_host", &flac_cfg.stream.proxy_host); |
| xmms_cfg_read_int(cfg, "flac", "stream.proxy_port", &flac_cfg.stream.proxy_port); |
| xmms_cfg_read_boolean(cfg, "flac", "stream.proxy_use_auth", &flac_cfg.stream.proxy_use_auth); |
| xmms_cfg_read_string(cfg, "flac", "stream.proxy_user", &flac_cfg.stream.proxy_user); |
| xmms_cfg_read_string(cfg, "flac", "stream.proxy_pass", &flac_cfg.stream.proxy_pass); |
| xmms_cfg_read_boolean(cfg, "flac", "stream.save_http_stream", &flac_cfg.stream.save_http_stream); |
| if (!xmms_cfg_read_string(cfg, "flac", "stream.save_http_path", &flac_cfg.stream.save_http_path) || |
| ! *flac_cfg.stream.save_http_path) { |
| if (flac_cfg.stream.save_http_path) |
| g_free (flac_cfg.stream.save_http_path); |
| flac_cfg.stream.save_http_path = homedir(); |
| } |
| xmms_cfg_read_boolean(cfg, "flac", "stream.cast_title_streaming", &flac_cfg.stream.cast_title_streaming); |
| xmms_cfg_read_boolean(cfg, "flac", "stream.use_udp_channel", &flac_cfg.stream.use_udp_channel); |
| |
| init_decoder_func_tables(); |
| decoder_func_table_ = DECODER_FUNCS [DECODER_FILE]; |
| decoder_ = decoder_func_table_ -> new_decoder(); |
| |
| xmms_cfg_free(cfg); |
| } |
| |
| int FLAC_XMMS__is_our_file(char *filename) |
| { |
| char *ext; |
| |
| ext = strrchr(filename, '.'); |
| if(ext) |
| if(!strcasecmp(ext, ".flac") || !strcasecmp(ext, ".fla")) |
| return 1; |
| return 0; |
| } |
| |
| void FLAC_XMMS__play_file(char *filename) |
| { |
| FILE *f; |
| |
| sample_buffer_first_ = sample_buffer_last_ = 0; |
| audio_error_ = false; |
| file_info_.abort_flag = false; |
| file_info_.is_playing = false; |
| file_info_.eof = false; |
| file_info_.play_thread_open = false; |
| file_info_.has_replaygain = false; |
| |
| if (source_to_decoder_type (filename) == DECODER_FILE) { |
| if(0 == (f = fopen(filename, "r"))) |
| return; |
| fclose(f); |
| } |
| |
| if(decoder_ == 0) |
| return; |
| |
| if(!safe_decoder_init_(filename, &decoder_, &decoder_func_table_)) |
| return; |
| |
| if(file_info_.has_replaygain && flac_cfg.output.replaygain.enable) { |
| if(flac_cfg.output.resolution.replaygain.bps_out == 8) { |
| file_info_.sample_format = FMT_U8; |
| file_info_.sample_format_bytes_per_sample = 1; |
| } |
| else if(flac_cfg.output.resolution.replaygain.bps_out == 16) { |
| file_info_.sample_format = (is_big_endian_host_) ? FMT_S16_BE : FMT_S16_LE; |
| file_info_.sample_format_bytes_per_sample = 2; |
| } |
| else { |
| /*@@@ need some error here like wa2: MessageBox(mod_.hMainWindow, "ERROR: plugin can only handle 8/16-bit samples\n", "ERROR: plugin can only handle 8/16-bit samples", 0); */ |
| fprintf(stderr, "libxmms-flac: can't handle %d bit output\n", flac_cfg.output.resolution.replaygain.bps_out); |
| decoder_func_table_ -> safe_decoder_finish(decoder_); |
| return; |
| } |
| } |
| else { |
| if(file_info_.bits_per_sample == 8) { |
| file_info_.sample_format = FMT_U8; |
| file_info_.sample_format_bytes_per_sample = 1; |
| } |
| else if(file_info_.bits_per_sample == 16 || (file_info_.bits_per_sample == 24 && flac_cfg.output.resolution.normal.dither_24_to_16)) { |
| file_info_.sample_format = (is_big_endian_host_) ? FMT_S16_BE : FMT_S16_LE; |
| file_info_.sample_format_bytes_per_sample = 2; |
| } |
| else { |
| /*@@@ need some error here like wa2: MessageBox(mod_.hMainWindow, "ERROR: plugin can only handle 8/16-bit samples\n", "ERROR: plugin can only handle 8/16-bit samples", 0); */ |
| fprintf(stderr, "libxmms-flac: can't handle %d bit output\n", file_info_.bits_per_sample); |
| decoder_func_table_ -> safe_decoder_finish(decoder_); |
| return; |
| } |
| } |
| FLAC__replaygain_synthesis__init_dither_context(&file_info_.dither_context, file_info_.sample_format_bytes_per_sample * 8, flac_cfg.output.resolution.replaygain.noise_shaping); |
| file_info_.is_playing = true; |
| |
| if(flac_ip.output->open_audio(file_info_.sample_format, file_info_.sample_rate, file_info_.channels) == 0) { |
| audio_error_ = true; |
| decoder_func_table_ -> safe_decoder_finish(decoder_); |
| return; |
| } |
| |
| file_info_.title = flac_format_song_title(filename); |
| flac_ip.set_info(file_info_.title, file_info_.length_in_msec, file_info_.sample_rate * file_info_.channels * file_info_.bits_per_sample, file_info_.sample_rate, file_info_.channels); |
| |
| file_info_.seek_to_in_sec = -1; |
| file_info_.play_thread_open = true; |
| pthread_create(&decode_thread_, NULL, play_loop_, NULL); |
| } |
| |
| void FLAC_XMMS__stop() |
| { |
| if(file_info_.is_playing) { |
| file_info_.is_playing = false; |
| if(file_info_.play_thread_open) { |
| file_info_.play_thread_open = false; |
| pthread_join(decode_thread_, NULL); |
| } |
| flac_ip.output->close_audio(); |
| decoder_func_table_ -> safe_decoder_finish (decoder_); |
| } |
| } |
| |
| void FLAC_XMMS__pause(short p) |
| { |
| flac_ip.output->pause(p); |
| } |
| |
| void FLAC_XMMS__seek(int time) |
| { |
| if (decoder_func_table_->seekable) { |
| file_info_.seek_to_in_sec = time; |
| file_info_.eof = false; |
| |
| while(file_info_.seek_to_in_sec != -1) |
| xmms_usleep(10000); |
| } |
| } |
| |
| int FLAC_XMMS__get_time() |
| { |
| if(audio_error_) |
| return -2; |
| if(!file_info_.is_playing || (file_info_.eof && !flac_ip.output->buffer_playing())) |
| return -1; |
| else |
| return flac_ip.output->output_time(); |
| } |
| |
| void FLAC_XMMS__cleanup() |
| { |
| decoder_func_table_ -> safe_decoder_delete(decoder_); |
| decoder_ = 0; |
| } |
| |
| void FLAC_XMMS__get_song_info(char *filename, char **title, int *length_in_msec) |
| { |
| FLAC__StreamMetadata streaminfo; |
| |
| if(0 == filename) |
| filename = ""; |
| |
| if(!FLAC__metadata_get_streaminfo(filename, &streaminfo)) { |
| /* @@@ how to report the error? */ |
| if(title) { |
| if (source_to_decoder_type (filename) == DECODER_FILE) { |
| static const char *errtitle = "Invalid FLAC File: "; |
| *title = g_malloc(strlen(errtitle) + 1 + strlen(filename) + 1 + 1); |
| sprintf(*title, "%s\"%s\"", errtitle, filename); |
| } else { |
| *title = NULL; |
| } |
| } |
| if(length_in_msec) |
| *length_in_msec = -1; |
| return; |
| } |
| |
| if(title) { |
| *title = flac_format_song_title(filename); |
| } |
| if(length_in_msec) |
| *length_in_msec = (unsigned)((double)streaminfo.data.stream_info.total_samples / (double)streaminfo.data.stream_info.sample_rate * 1000.0 + 0.5); |
| } |
| |
| /*********************************************************************** |
| * local routines |
| **********************************************************************/ |
| |
| void *play_loop_(void *arg) |
| { |
| unsigned written_time_last = 0, bh_index_last_w = 0, bh_index_last_o = BITRATE_HIST_SIZE, blocksize = 1; |
| FLAC__uint64 decode_position_last = 0, decode_position_frame_last = 0, decode_position_frame = 0; |
| |
| (void)arg; |
| |
| while(file_info_.is_playing) { |
| if(!file_info_.eof) { |
| while(sample_buffer_last_ - sample_buffer_first_ < SAMPLES_PER_WRITE) { |
| unsigned s; |
| |
| s = sample_buffer_last_ - sample_buffer_first_; |
| if(decoder_func_table_ -> is_eof(decoder_)) { |
| file_info_.eof = true; |
| break; |
| } |
| else if (!decoder_func_table_ -> process_single(decoder_)) { |
| /*@@@ this should probably be a dialog */ |
| fprintf(stderr, "libxmms-flac: READ ERROR processing frame\n"); |
| file_info_.eof = true; |
| break; |
| } |
| blocksize = sample_buffer_last_ - sample_buffer_first_ - s; |
| decode_position_frame_last = decode_position_frame; |
| if(!decoder_func_table_->seekable || !FLAC__file_decoder_get_decode_position(decoder_, &decode_position_frame)) |
| decode_position_frame = 0; |
| } |
| if(sample_buffer_last_ - sample_buffer_first_ > 0) { |
| const unsigned n = min(sample_buffer_last_ - sample_buffer_first_, SAMPLES_PER_WRITE); |
| int bytes = n * file_info_.channels * file_info_.sample_format_bytes_per_sample; |
| FLAC__byte *sample_buffer_start = sample_buffer_ + sample_buffer_first_ * file_info_.channels * file_info_.sample_format_bytes_per_sample; |
| unsigned written_time, bh_index_w; |
| FLAC__uint64 decode_position; |
| |
| sample_buffer_first_ += n; |
| flac_ip.add_vis_pcm(flac_ip.output->written_time(), file_info_.sample_format, file_info_.channels, bytes, sample_buffer_start); |
| while(flac_ip.output->buffer_free() < (int)bytes && file_info_.is_playing && file_info_.seek_to_in_sec == -1) |
| xmms_usleep(10000); |
| if(file_info_.is_playing && file_info_.seek_to_in_sec == -1) |
| flac_ip.output->write_audio(sample_buffer_start, bytes); |
| |
| /* compute current bitrate */ |
| |
| written_time = flac_ip.output->written_time(); |
| bh_index_w = written_time / BITRATE_HIST_SEGMENT_MSEC % BITRATE_HIST_SIZE; |
| if(bh_index_w != bh_index_last_w) { |
| bh_index_last_w = bh_index_w; |
| decode_position = decode_position_frame - (double)(sample_buffer_last_ - sample_buffer_first_) * (double)(decode_position_frame - decode_position_frame_last) / (double)blocksize; |
| bitrate_history_[(bh_index_w + BITRATE_HIST_SIZE - 1) % BITRATE_HIST_SIZE] = |
| decode_position > decode_position_last && written_time > written_time_last ? |
| 8000 * (decode_position - decode_position_last) / (written_time - written_time_last) : |
| file_info_.sample_rate * file_info_.channels * file_info_.bits_per_sample; |
| decode_position_last = decode_position; |
| written_time_last = written_time; |
| } |
| } |
| else { |
| file_info_.eof = true; |
| xmms_usleep(10000); |
| } |
| } |
| else |
| xmms_usleep(10000); |
| if(decoder_func_table_->seekable && file_info_.seek_to_in_sec != -1) { |
| const double distance = (double)file_info_.seek_to_in_sec * 1000.0 / (double)file_info_.length_in_msec; |
| unsigned target_sample = (unsigned)(distance * (double)file_info_.total_samples); |
| if(FLAC__file_decoder_seek_absolute(decoder_, (FLAC__uint64)target_sample)) { |
| flac_ip.output->flush(file_info_.seek_to_in_sec * 1000); |
| bh_index_last_w = bh_index_last_o = flac_ip.output->output_time() / BITRATE_HIST_SEGMENT_MSEC % BITRATE_HIST_SIZE; |
| if(!FLAC__file_decoder_get_decode_position(decoder_, &decode_position_frame)) |
| decode_position_frame = 0; |
| file_info_.seek_to_in_sec = -1; |
| file_info_.eof = false; |
| sample_buffer_first_ = sample_buffer_last_ = 0; |
| } |
| } |
| else { |
| /* display the right bitrate from history */ |
| unsigned bh_index_o = flac_ip.output->output_time() / BITRATE_HIST_SEGMENT_MSEC % BITRATE_HIST_SIZE; |
| if(bh_index_o != bh_index_last_o && bh_index_o != bh_index_last_w && bh_index_o != (bh_index_last_w + 1) % BITRATE_HIST_SIZE) { |
| bh_index_last_o = bh_index_o; |
| flac_ip.set_info(file_info_.title, file_info_.length_in_msec, bitrate_history_[bh_index_o], file_info_.sample_rate, file_info_.channels); |
| } |
| } |
| } |
| |
| decoder_func_table_ -> safe_decoder_finish(decoder_); |
| |
| /* are these two calls necessary? */ |
| flac_ip.output->buffer_free(); |
| flac_ip.output->buffer_free(); |
| |
| g_free(file_info_.title); |
| |
| pthread_exit(NULL); |
| return 0; /* to silence the compiler warning about not returning a value */ |
| } |
| |
| /*********** File decoder functions */ |
| |
| static FLAC__bool file_decoder_init (void *decoder) |
| { |
| return FLAC__file_decoder_init( (FLAC__FileDecoder*) decoder) == FLAC__FILE_DECODER_OK; |
| } |
| |
| static void file_decoder_safe_decoder_finish_(void *decoder) |
| { |
| if(decoder && FLAC__file_decoder_get_state((FLAC__FileDecoder *) decoder) != FLAC__FILE_DECODER_UNINITIALIZED) |
| FLAC__file_decoder_finish((FLAC__FileDecoder *) decoder); |
| } |
| |
| static void file_decoder_safe_decoder_delete_(void *decoder) |
| { |
| if(decoder) { |
| file_decoder_safe_decoder_finish_(decoder); |
| FLAC__file_decoder_delete( (FLAC__FileDecoder *) decoder); |
| } |
| } |
| |
| static FLAC__bool file_decoder_is_eof(void *decoder) |
| { |
| return FLAC__file_decoder_get_state((FLAC__FileDecoder *) decoder) == FLAC__FILE_DECODER_END_OF_FILE; |
| } |
| |
| static const decoder_funcs_t FILE_DECODER_FUNCTIONS = { |
| true, |
| (void* (*) (void)) FLAC__file_decoder_new, |
| (FLAC__bool (*) (void *, FLAC__bool)) FLAC__file_decoder_set_md5_checking, |
| (FLAC__bool (*) (void *, const char*)) FLAC__file_decoder_set_filename, |
| (FLAC__bool (*) (void *)) FLAC__file_decoder_set_metadata_ignore_all, |
| (FLAC__bool (*) (void *, FLAC__MetadataType)) FLAC__file_decoder_set_metadata_respond, |
| (FLAC__bool (*) (void *, WriteCallback)) FLAC__file_decoder_set_write_callback, |
| (FLAC__bool (*) (void *, MetadataCallback)) FLAC__file_decoder_set_metadata_callback, |
| (FLAC__bool (*) (void *, ErrorCallback)) FLAC__file_decoder_set_error_callback, |
| (FLAC__bool (*) (void *, void *)) FLAC__file_decoder_set_client_data, |
| (FLAC__bool (*) (void *)) file_decoder_init, |
| (void (*) (void *)) file_decoder_safe_decoder_finish_, |
| (void (*) (void *)) file_decoder_safe_decoder_delete_, |
| (FLAC__bool (*) (void *)) FLAC__file_decoder_process_until_end_of_metadata, |
| (FLAC__bool (*) (void *)) FLAC__file_decoder_process_single, |
| file_decoder_is_eof |
| }; |
| |
| /*********** HTTP decoder functions */ |
| |
| static gchar *url_; |
| |
| static FLAC__bool http_decoder_set_md5_checking (void *decoder, FLAC__bool value) |
| { |
| (void) value; |
| // operation unsupported |
| return FLAC__stream_decoder_get_state ((const FLAC__StreamDecoder *) decoder) == |
| FLAC__STREAM_DECODER_UNINITIALIZED; |
| } |
| |
| static FLAC__bool http_decoder_set_url (void *decoder, const char* url) |
| { |
| (void) decoder; |
| url_ = g_strdup (url); |
| return true; |
| } |
| |
| static FLAC__StreamDecoderReadStatus http_decoder_read_callback (const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data) |
| { |
| (void) decoder; |
| (void) client_data; |
| *bytes = flac_http_read (buffer, *bytes); |
| return *bytes ? FLAC__STREAM_DECODER_READ_STATUS_CONTINUE : FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM; |
| } |
| |
| static FLAC__bool http_decoder_init (void *decoder) |
| { |
| flac_http_open (url_, 0); |
| g_free (url_); |
| FLAC__stream_decoder_set_read_callback (decoder, http_decoder_read_callback); |
| return FLAC__stream_decoder_init( (FLAC__StreamDecoder*) decoder) == FLAC__STREAM_DECODER_SEARCH_FOR_METADATA; |
| } |
| |
| static void http_decoder_safe_decoder_finish_(void *decoder) |
| { |
| if(decoder && FLAC__stream_decoder_get_state((FLAC__StreamDecoder *) decoder) != FLAC__STREAM_DECODER_UNINITIALIZED) { |
| FLAC__stream_decoder_finish((FLAC__StreamDecoder *) decoder); |
| flac_http_close(); |
| } |
| } |
| |
| static void http_decoder_safe_decoder_delete_(void *decoder) |
| { |
| if(decoder) { |
| http_decoder_safe_decoder_finish_(decoder); |
| FLAC__stream_decoder_delete( (FLAC__StreamDecoder *) decoder); |
| } |
| } |
| |
| static FLAC__bool http_decoder_is_eof(void *decoder) |
| { |
| return FLAC__stream_decoder_get_state((FLAC__StreamDecoder *) decoder) == FLAC__STREAM_DECODER_END_OF_STREAM; |
| } |
| |
| static const decoder_funcs_t HTTP_DECODER_FUNCTIONS = { |
| false, |
| (void* (*) (void)) FLAC__stream_decoder_new, |
| http_decoder_set_md5_checking, |
| (FLAC__bool (*) (void *, const char*)) http_decoder_set_url, |
| (FLAC__bool (*) (void *)) FLAC__stream_decoder_set_metadata_ignore_all, |
| (FLAC__bool (*) (void *, FLAC__MetadataType)) FLAC__stream_decoder_set_metadata_respond, |
| (FLAC__bool (*) (void *, WriteCallback)) FLAC__stream_decoder_set_write_callback, |
| (FLAC__bool (*) (void *, MetadataCallback)) FLAC__stream_decoder_set_metadata_callback, |
| (FLAC__bool (*) (void *, ErrorCallback)) FLAC__stream_decoder_set_error_callback, |
| (FLAC__bool (*) (void *, void *)) FLAC__stream_decoder_set_client_data, |
| (FLAC__bool (*) (void *)) http_decoder_init, |
| (void (*) (void *)) http_decoder_safe_decoder_finish_, |
| (void (*) (void *)) http_decoder_safe_decoder_delete_, |
| (FLAC__bool (*) (void *)) FLAC__stream_decoder_process_until_end_of_metadata, |
| (FLAC__bool (*) (void *)) FLAC__stream_decoder_process_single, |
| http_decoder_is_eof |
| }; |
| |
| static decoder_funcs_t const *decoder_func_table_; |
| |
| static void init_decoder_func_tables() |
| { |
| DECODER_FUNCS [DECODER_FILE] = & FILE_DECODER_FUNCTIONS; |
| DECODER_FUNCS [DECODER_HTTP] = & HTTP_DECODER_FUNCTIONS; |
| } |
| |
| static decoder_t source_to_decoder_type (const char *source) |
| { |
| return strncasecmp(source, "http://", 7) ? DECODER_FILE : DECODER_HTTP; |
| } |
| |
| static void change_decoder_if_needed (decoder_t new_decoder_type, void **decoderp, decoder_funcs_t const ** fntabp) |
| { |
| const decoder_funcs_t *new_fn_table = DECODER_FUNCS [new_decoder_type]; |
| if (*fntabp != new_fn_table) { |
| (*fntabp)->safe_decoder_delete(*decoderp); |
| *fntabp = new_fn_table; |
| *decoderp = new_fn_table -> new_decoder(); |
| } |
| } |
| |
| FLAC__bool safe_decoder_init_(const char *filename, void **decoderp, decoder_funcs_t const ** fntabp) |
| { |
| if(decoderp == 0 || *decoderp == 0) |
| return false; |
| |
| (*fntabp)->safe_decoder_finish(*decoderp); |
| |
| change_decoder_if_needed(source_to_decoder_type(filename), decoderp, fntabp); |
| |
| { |
| decoder_funcs_t const *fntab = *fntabp; |
| void *decoder = *decoderp; |
| |
| decoder = *decoderp; |
| fntab = *fntabp; |
| |
| fntab -> set_md5_checking(decoder, false); |
| fntab -> set_source(decoder, filename); |
| fntab -> set_metadata_ignore_all(decoder); |
| fntab -> set_metadata_respond(decoder, FLAC__METADATA_TYPE_STREAMINFO); |
| fntab -> set_metadata_respond(decoder, FLAC__METADATA_TYPE_VORBIS_COMMENT); |
| fntab -> set_write_callback(decoder, write_callback_); |
| fntab -> set_metadata_callback(decoder, metadata_callback_); |
| fntab -> set_error_callback(decoder, error_callback_); |
| fntab -> set_client_data(decoder, &file_info_); |
| if(!fntab -> decoder_init(decoder)) |
| return false; |
| |
| if(!fntab -> process_until_end_of_metadata(decoder)) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| FLAC__StreamDecoderWriteStatus write_callback_(const void *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data) |
| { |
| file_info_struct *file_info = (file_info_struct *)client_data; |
| const unsigned channels = file_info->channels, wide_samples = frame->header.blocksize; |
| const unsigned bits_per_sample = file_info->bits_per_sample; |
| FLAC__byte *sample_buffer_start; |
| |
| (void)decoder; |
| |
| if(file_info->abort_flag) |
| return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; |
| |
| if((sample_buffer_last_ + wide_samples) > (SAMPLE_BUFFER_SIZE / (channels * file_info->sample_format_bytes_per_sample))) { |
| memmove(sample_buffer_, sample_buffer_ + sample_buffer_first_ * channels * file_info->sample_format_bytes_per_sample, (sample_buffer_last_ - sample_buffer_first_) * channels * file_info->sample_format_bytes_per_sample); |
| sample_buffer_last_ -= sample_buffer_first_; |
| sample_buffer_first_ = 0; |
| } |
| sample_buffer_start = sample_buffer_ + sample_buffer_last_ * channels * file_info->sample_format_bytes_per_sample; |
| if(file_info->has_replaygain && flac_cfg.output.replaygain.enable) { |
| FLAC__replaygain_synthesis__apply_gain( |
| sample_buffer_start, |
| !is_big_endian_host_, |
| file_info->sample_format_bytes_per_sample == 1, /* unsigned_data_out */ |
| buffer, |
| wide_samples, |
| channels, |
| bits_per_sample, |
| file_info->sample_format_bytes_per_sample * 8, |
| file_info->replay_scale, |
| flac_cfg.output.replaygain.hard_limit, |
| flac_cfg.output.resolution.replaygain.dither, |
| &file_info->dither_context |
| ); |
| } |
| else if(is_big_endian_host_) { |
| FLAC__plugin_common__pack_pcm_signed_big_endian( |
| sample_buffer_start, |
| buffer, |
| wide_samples, |
| channels, |
| bits_per_sample, |
| file_info->sample_format_bytes_per_sample * 8 |
| ); |
| } |
| else { |
| FLAC__plugin_common__pack_pcm_signed_little_endian( |
| sample_buffer_start, |
| buffer, |
| wide_samples, |
| channels, |
| bits_per_sample, |
| file_info->sample_format_bytes_per_sample * 8 |
| ); |
| } |
| |
| sample_buffer_last_ += wide_samples; |
| |
| return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; |
| } |
| |
| void metadata_callback_(const void *decoder, const FLAC__StreamMetadata *metadata, void *client_data) |
| { |
| file_info_struct *file_info = (file_info_struct *)client_data; |
| (void)decoder; |
| if(metadata->type == FLAC__METADATA_TYPE_STREAMINFO) { |
| FLAC__ASSERT(metadata->data.stream_info.total_samples < FLAC__U64L(0x100000000)); /* this plugin can only handle < 4 gigasamples */ |
| file_info->total_samples = (unsigned)(metadata->data.stream_info.total_samples&0xffffffff); |
| file_info->bits_per_sample = metadata->data.stream_info.bits_per_sample; |
| file_info->channels = metadata->data.stream_info.channels; |
| file_info->sample_rate = metadata->data.stream_info.sample_rate; |
| file_info->length_in_msec = (unsigned)((double)file_info->total_samples / (double)file_info->sample_rate * 1000.0 + 0.5); |
| } |
| else if(metadata->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) { |
| double gain, peak; |
| if(grabbag__replaygain_load_from_vorbiscomment(metadata, flac_cfg.output.replaygain.album_mode, &gain, &peak)) { |
| file_info->has_replaygain = true; |
| file_info->replay_scale = grabbag__replaygain_compute_scale_factor(peak, gain, (double)flac_cfg.output.replaygain.preamp, /*prevent_clipping=*/!flac_cfg.output.replaygain.hard_limit); |
| } |
| } |
| } |
| |
| void error_callback_(const void *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data) |
| { |
| file_info_struct *file_info = (file_info_struct *)client_data; |
| (void)decoder; |
| if(status != FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC) |
| file_info->abort_flag = true; |
| } |