src/plugin_xmms/plugin.c

   1 /* libxmms-flac - XMMS FLAC input plugin
   2  * Copyright (C) 2000,2001,2002  Josh Coalson
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  17  */
  18
  19 #include <pthread.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22 #include <stdio.h>
  23 #include <glib.h>
  24
  25 #include <xmms/plugin.h>
  26 #include <xmms/util.h>
  27 #include <xmms/configfile.h>
  28 #include <xmms/titlestring.h>
  29
  30 #ifdef HAVE_CONFIG_H
  31 #include <config.h>
  32 #endif
  33
  34 #ifdef HAVE_LANGINFO_CODESET
  35 #include <langinfo.h>
  36 #endif
  37
  38 #include "FLAC/all.h"
  39 #include "plugin_common/all.h"
  40 #include "share/grabbag.h"
  41 #include "configure.h"
  42 #include "wrap_id3.h"
  43 #include "charset.h"
  44
  45 #ifdef min
  46 #undef min
  47 #endif
  48 #define min(x,y) ((x)<(y)?(x):(y))
  49
  50
  51 typedef struct {
  52         FLAC__bool abort_flag;
  53         FLAC__bool is_playing;
  54         FLAC__bool eof;
  55         FLAC__bool play_thread_open; /* if true, is_playing must also be true */
  56         unsigned total_samples;
  57         unsigned bits_per_sample;
  58         unsigned channels;
  59         unsigned sample_rate;
  60         unsigned length_in_msec;
  61         gchar *title;
  62         AFormat sample_format;
  63         int seek_to_in_sec;
  64         FLAC__bool has_replaygain;
  65         double replay_scale;
  66         DitherContext dither_context;
  67 } file_info_struct;
  68
  69 static void FLAC_XMMS__init();
  70 static int  FLAC_XMMS__is_our_file(char *filename);
  71 static void FLAC_XMMS__play_file(char *filename);
  72 static void FLAC_XMMS__stop();
  73 static void FLAC_XMMS__pause(short p);
  74 static void FLAC_XMMS__seek(int time);
  75 static int  FLAC_XMMS__get_time();
  76 static void FLAC_XMMS__cleanup();
  77 static void FLAC_XMMS__get_song_info(char *filename, char **title, int *length);
  78
  79 static void *play_loop_(void *arg);
  80 static FLAC__bool safe_decoder_init_(const char *filename, FLAC__FileDecoder *decoder);
  81 static void safe_decoder_finish_(FLAC__FileDecoder *decoder);
  82 static void safe_decoder_delete_(FLAC__FileDecoder *decoder);
  83 static FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__FileDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
  84 static void metadata_callback_(const FLAC__FileDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
  85 static void error_callback_(const FLAC__FileDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
  86
  87 InputPlugin flac_ip =
  88 {
  89         NULL,
  90         NULL,
  91         "Reference FLAC Player v" VERSION,
  92         FLAC_XMMS__init,
  93         FLAC_XMMS__aboutbox,
  94         FLAC_XMMS__configure,
  95         FLAC_XMMS__is_our_file,
  96         NULL,
  97         FLAC_XMMS__play_file,
  98         FLAC_XMMS__stop,
  99         FLAC_XMMS__pause,
 100         FLAC_XMMS__seek,
 101         NULL,
 102         FLAC_XMMS__get_time,
 103         NULL,
 104         NULL,
 105         FLAC_XMMS__cleanup,
 106         NULL,
 107         NULL,
 108         NULL,
 109         NULL,
 110         FLAC_XMMS__get_song_info,
 111         NULL,           /* file_info_box */
 112         NULL
 113 };
 114
 115 #define SAMPLES_PER_WRITE 512
 116 static FLAC__int32 reservoir_[FLAC__MAX_BLOCK_SIZE * 2/*for overflow*/ * FLAC_PLUGIN__MAX_SUPPORTED_CHANNELS];
 117 static FLAC__byte sample_buffer_[SAMPLES_PER_WRITE * FLAC_PLUGIN__MAX_SUPPORTED_CHANNELS * (24/8)]; /* (24/8) for max bytes per sample */
 118 static unsigned wide_samples_in_reservoir_ = 0;
 119
 120 static FLAC__FileDecoder *decoder_ = 0;
 121 static file_info_struct file_info_;
 122 static pthread_t decode_thread_;
 123 static FLAC__bool audio_error_ = false;
 124
 125 #define BITRATE_HIST_SEGMENT_MSEC 500
 126 /* 500ms * 50 = 25s should be enough */
 127 #define BITRATE_HIST_SIZE 50
 128 static unsigned bitrate_history_[BITRATE_HIST_SIZE];
 129
 130
 131 InputPlugin *get_iplugin_info()
 132 {
 133         flac_ip.description = g_strdup_printf("Reference FLAC Player v%s", FLAC__VERSION_STRING);
 134         return &flac_ip;
 135 }
 136
 137 void FLAC_XMMS__init()
 138 {
 139         ConfigFile *cfg;
 140
 141         flac_cfg.title.tag_override = FALSE;
 142         g_free(flac_cfg.title.tag_format);
 143         flac_cfg.title.convert_char_set = FALSE;
 144
 145         cfg = xmms_cfg_open_default_file();
 146
 147         /* title */
 148
 149         xmms_cfg_read_boolean(cfg, "flac", "title.tag_override", &flac_cfg.title.tag_override);
 150
 151         if(!xmms_cfg_read_string(cfg, "flac", "title.tag_format", &flac_cfg.title.tag_format))
 152                 flac_cfg.title.tag_format = g_strdup("%p - %t");
 153
 154         xmms_cfg_read_boolean(cfg, "flac", "title.convert_char_set", &flac_cfg.title.convert_char_set);
 155
 156         if(!xmms_cfg_read_string(cfg, "flac", "title.file_char_set", &flac_cfg.title.file_char_set))
 157                 flac_cfg.title.file_char_set = FLAC_plugin__charset_get_current();
 158
 159         if(!xmms_cfg_read_string(cfg, "flac", "title.user_char_set", &flac_cfg.title.user_char_set))
 160                 flac_cfg.title.user_char_set = FLAC_plugin__charset_get_current();
 161
 162         /* replaygain */
 163
 164         xmms_cfg_read_boolean(cfg, "flac", "output.replaygain.enable", &flac_cfg.output.replaygain.enable);
 165
 166         xmms_cfg_read_boolean(cfg, "flac", "output.replaygain.album_mode", &flac_cfg.output.replaygain.album_mode);
 167
 168         if(!xmms_cfg_read_int(cfg, "flac", "output.replaygain.preamp", &flac_cfg.output.replaygain.preamp))
 169                 flac_cfg.output.replaygain.preamp = 0;
 170
 171         xmms_cfg_read_boolean(cfg, "flac", "output.replaygain.hard_limit", &flac_cfg.output.replaygain.hard_limit);
 172
 173         xmms_cfg_read_boolean(cfg, "flac", "output.resolution.normal.dither_24_to_16", &flac_cfg.output.resolution.normal.dither_24_to_16);
 174         xmms_cfg_read_boolean(cfg, "flac", "output.resolution.replaygain.dither", &flac_cfg.output.resolution.replaygain.dither);
 175
 176         if(!xmms_cfg_read_int(cfg, "flac", "output.resolution.replaygain.noise_shaping", &flac_cfg.output.resolution.replaygain.noise_shaping))
 177                 flac_cfg.output.resolution.replaygain.noise_shaping = 1;
 178
 179         if(!xmms_cfg_read_int(cfg, "flac", "output.resolution.replaygain.bps_out", &flac_cfg.output.resolution.replaygain.bps_out))
 180                 flac_cfg.output.resolution.replaygain.bps_out = 16;
 181
 182         decoder_ = FLAC__file_decoder_new();
 183 }
 184
 185 int FLAC_XMMS__is_our_file(char *filename)
 186 {
 187         char *ext;
 188
 189         ext = strrchr(filename, '.');
 190         if(ext)
 191                 if(!strcasecmp(ext, ".flac") || !strcasecmp(ext, ".fla"))
 192                         return 1;
 193         return 0;
 194 }
 195
 196 void FLAC_XMMS__play_file(char *filename)
 197 {
 198         FILE *f;
 199
 200         wide_samples_in_reservoir_ = 0;
 201         audio_error_ = false;
 202         file_info_.abort_flag = false;
 203         file_info_.is_playing = false;
 204         file_info_.eof = false;
 205         file_info_.play_thread_open = false;
 206         file_info_.has_replaygain = false;
 207
 208         if(0 == (f = fopen(filename, "r")))
 209                 return;
 210         fclose(f);
 211
 212         if(decoder_ == 0)
 213                 return;
 214
 215         if(!safe_decoder_init_(filename, decoder_))
 216                 return;
 217
 218         if(file_info_.has_replaygain && flac_cfg.output.replaygain.enable && flac_cfg.output.resolution.replaygain.dither)
 219                 FLAC__plugin_common__init_dither_context(&file_info_.dither_context, file_info_.bits_per_sample, flac_cfg.output.resolution.replaygain.noise_shaping);
 220
 221         file_info_.is_playing = true;
 222
 223         if(flac_ip.output->open_audio(file_info_.sample_format, file_info_.sample_rate, file_info_.channels) == 0) {
 224                 audio_error_ = true;
 225                 safe_decoder_finish_(decoder_);
 226                 return;
 227         }
 228
 229         file_info_.title = flac_format_song_title(filename);
 230         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);
 231
 232         file_info_.seek_to_in_sec = -1;
 233         file_info_.play_thread_open = true;
 234         pthread_create(&decode_thread_, NULL, play_loop_, NULL);
 235 }
 236
 237 void FLAC_XMMS__stop()
 238 {
 239         if(file_info_.is_playing) {
 240                 file_info_.is_playing = false;
 241                 if(file_info_.play_thread_open) {
 242                         file_info_.play_thread_open = false;
 243                         pthread_join(decode_thread_, NULL);
 244                 }
 245                 flac_ip.output->close_audio();
 246                 safe_decoder_finish_(decoder_);
 247         }
 248 }
 249
 250 void FLAC_XMMS__pause(short p)
 251 {
 252         flac_ip.output->pause(p);
 253 }
 254
 255 void FLAC_XMMS__seek(int time)
 256 {
 257         file_info_.seek_to_in_sec = time;
 258         file_info_.eof = false;
 259
 260         while(file_info_.seek_to_in_sec != -1)
 261                 xmms_usleep(10000);
 262 }
 263
 264 int FLAC_XMMS__get_time()
 265 {
 266         if(audio_error_)
 267                 return -2;
 268         if(!file_info_.is_playing || (file_info_.eof && !flac_ip.output->buffer_playing()))
 269                 return -1;
 270         else
 271                 return flac_ip.output->output_time();
 272 }
 273
 274 void FLAC_XMMS__cleanup()
 275 {
 276         safe_decoder_delete_(decoder_);
 277         decoder_ = 0;
 278 }
 279
 280 void FLAC_XMMS__get_song_info(char *filename, char **title, int *length_in_msec)
 281 {
 282         FLAC__StreamMetadata streaminfo;
 283
 284         if(0 == filename)
 285                 filename = "";
 286
 287         if(!FLAC__metadata_get_streaminfo(filename, &streaminfo)) {
 288                 /* @@@ how to report the error? */
 289                 if(title) {
 290                         static const char *errtitle = "Invalid FLAC File: ";
 291                         *title = g_malloc(strlen(errtitle) + 1 + strlen(filename) + 1 + 1);
 292                         sprintf(*title, "%s\"%s\"", errtitle, filename);
 293                 }
 294                 if(length_in_msec)
 295                         *length_in_msec = -1;
 296                 return;
 297         }
 298
 299         if(title) {
 300                 *title = flac_format_song_title(filename);
 301         }
 302         if(length_in_msec)
 303                 *length_in_msec = streaminfo.data.stream_info.total_samples * 10 / (streaminfo.data.stream_info.sample_rate / 100);
 304 }
 305
 306 /***********************************************************************
 307  * local routines
 308  **********************************************************************/
 309
 310 void *play_loop_(void *arg)
 311 {
 312         unsigned written_time_last = 0, bh_index_last_w = 0, bh_index_last_o = BITRATE_HIST_SIZE;
 313         FLAC__uint64 decode_position_last = 0;
 314
 315         (void)arg;
 316
 317         while(file_info_.is_playing) {
 318                 if(!file_info_.eof) {
 319                         while(wide_samples_in_reservoir_ < SAMPLES_PER_WRITE) {
 320                                 if(FLAC__file_decoder_get_state(decoder_) == FLAC__FILE_DECODER_END_OF_FILE) {
 321                                         file_info_.eof = true;
 322                                         break;
 323                                 }
 324                                 else if(!FLAC__file_decoder_process_single(decoder_)) {
 325                                         /*@@@ this should probably be a dialog */
 326                                         fprintf(stderr, "libxmms-flac: READ ERROR processing frame\n");
 327                                         file_info_.eof = true;
 328                                         break;
 329                                 }
 330                         }
 331                         if(wide_samples_in_reservoir_ > 0) {
 332                                 const unsigned channels = file_info_.channels;
 333                                 const unsigned bits_per_sample = file_info_.bits_per_sample;
 334                                 const unsigned n = min(wide_samples_in_reservoir_, SAMPLES_PER_WRITE);
 335                                 const unsigned delta = n * channels;
 336                                 int bytes;
 337                                 unsigned i, written_time, bh_index_w;
 338                                 FLAC__uint64 decode_position;
 339
 340                                 if(flac_cfg.output.replaygain.enable && file_info_.has_replaygain) {
 341                                         bytes = (int)FLAC__plugin_common__apply_gain(
 342                                                 sample_buffer_,
 343                                                 reservoir_,
 344                                                 n,
 345                                                 channels,
 346                                                 bits_per_sample,
 347                                                 flac_cfg.output.resolution.replaygain.bps_out,
 348                                                 file_info_.replay_scale,
 349                                                 flac_cfg.output.replaygain.hard_limit,
 350                                                 flac_cfg.output.resolution.replaygain.dither,
 351                                                 (NoiseShaping)flac_cfg.output.resolution.replaygain.noise_shaping,
 352                                                 &file_info_.dither_context
 353                                         );
 354                                 }
 355                                 else {
 356                                         bytes = (int)FLAC__plugin_common__pack_pcm_signed_little_endian(
 357                                                 sample_buffer_,
 358                                                 reservoir_,
 359                                                 n,
 360                                                 channels,
 361                                                 bits_per_sample,
 362                                                 flac_cfg.output.resolution.normal.dither_24_to_16?
 363                                                         min(bits_per_sample, 16) :
 364                                                         bits_per_sample
 365                                         );
 366                                 }
 367
 368                                 for(i = delta; i < wide_samples_in_reservoir_ * channels; i++)
 369                                         reservoir_[i-delta] = reservoir_[i];
 370                                 wide_samples_in_reservoir_ -= n;
 371
 372                                 flac_ip.add_vis_pcm(flac_ip.output->written_time(), file_info_.sample_format, channels, bytes, sample_buffer_);
 373                                 while(flac_ip.output->buffer_free() < (int)bytes && file_info_.is_playing && file_info_.seek_to_in_sec == -1)
 374                                         xmms_usleep(10000);
 375                                 if(file_info_.is_playing && file_info_.seek_to_in_sec == -1)
 376                                         flac_ip.output->write_audio(sample_buffer_, bytes);
 377
 378                                 /* compute current bitrate */
 379
 380                                 written_time = flac_ip.output->written_time();
 381                                 bh_index_w = written_time / BITRATE_HIST_SEGMENT_MSEC % BITRATE_HIST_SIZE ;
 382                                 if(bh_index_w != bh_index_last_w && wide_samples_in_reservoir_ < SAMPLES_PER_WRITE) {
 383                                         bh_index_last_w = bh_index_w;
 384                                         if(!FLAC__file_decoder_get_decode_position(decoder_, &decode_position))
 385                                                 decode_position = 0;
 386
 387                                         bitrate_history_[(bh_index_w + BITRATE_HIST_SIZE - 1) % BITRATE_HIST_SIZE] =
 388                                                 decode_position > decode_position_last && written_time > written_time_last ?
 389                                                         8000 * (decode_position - decode_position_last) / (written_time - written_time_last) :
 390                                                         file_info_.sample_rate * file_info_.channels * file_info_.bits_per_sample;
 391                                         decode_position_last = decode_position;
 392                                         written_time_last = written_time;
 393                                 }
 394                         }
 395                         else {
 396                                 file_info_.eof = true;
 397                                 xmms_usleep(10000);
 398                         }
 399                 }
 400                 else
 401                         xmms_usleep(10000);
 402                 if(file_info_.seek_to_in_sec != -1) {
 403                         const double distance = (double)file_info_.seek_to_in_sec * 1000.0 / (double)file_info_.length_in_msec;
 404                         unsigned target_sample = (unsigned)(distance * (double)file_info_.total_samples);
 405                         if(FLAC__file_decoder_seek_absolute(decoder_, (FLAC__uint64)target_sample)) {
 406                                 flac_ip.output->flush(file_info_.seek_to_in_sec * 1000);
 407                                 bh_index_last_w = bh_index_last_o = file_info_.seek_to_in_sec * 1000 / BITRATE_HIST_SEGMENT_MSEC % BITRATE_HIST_SIZE;
 408                                 file_info_.seek_to_in_sec = -1;
 409                                 file_info_.eof = false;
 410                                 wide_samples_in_reservoir_ = 0;
 411                         }
 412                 }
 413                 else {
 414                         /* display the right bitrate from history */
 415                         unsigned bh_index_o = flac_ip.output->output_time() / BITRATE_HIST_SEGMENT_MSEC % BITRATE_HIST_SIZE;
 416                         if(bh_index_o != bh_index_last_o && bh_index_last_w != bh_index_o) {
 417                                 bh_index_last_o = bh_index_o;
 418                                 flac_ip.set_info(file_info_.title, file_info_.length_in_msec, bitrate_history_[bh_index_o], file_info_.sample_rate, file_info_.channels);
 419                         }
 420                 }
 421         }
 422
 423         safe_decoder_finish_(decoder_);
 424
 425         /* are these two calls necessary? */
 426         flac_ip.output->buffer_free();
 427         flac_ip.output->buffer_free();
 428
 429         g_free(file_info_.title);
 430
 431         pthread_exit(NULL);
 432         return 0; /* to silence the compiler warning about not returning a value */
 433 }
 434
 435 FLAC__bool safe_decoder_init_(const char *filename, FLAC__FileDecoder *decoder)
 436 {
 437         if(decoder == 0)
 438                 return false;
 439
 440         safe_decoder_finish_(decoder);
 441
 442         FLAC__file_decoder_set_md5_checking(decoder, false);
 443         FLAC__file_decoder_set_filename(decoder, filename);
 444         FLAC__file_decoder_set_metadata_ignore_all(decoder);
 445         FLAC__file_decoder_set_metadata_respond(decoder, FLAC__METADATA_TYPE_STREAMINFO);
 446         FLAC__file_decoder_set_metadata_respond(decoder, FLAC__METADATA_TYPE_VORBIS_COMMENT);
 447         FLAC__file_decoder_set_write_callback(decoder, write_callback_);
 448         FLAC__file_decoder_set_metadata_callback(decoder, metadata_callback_);
 449         FLAC__file_decoder_set_error_callback(decoder, error_callback_);
 450         FLAC__file_decoder_set_client_data(decoder, &file_info_);
 451         if(FLAC__file_decoder_init(decoder) != FLAC__FILE_DECODER_OK)
 452                 return false;
 453
 454         if(!FLAC__file_decoder_process_until_end_of_metadata(decoder))
 455                 return false;
 456
 457         return true;
 458 }
 459
 460 void safe_decoder_finish_(FLAC__FileDecoder *decoder)
 461 {
 462         if(decoder && FLAC__file_decoder_get_state(decoder) != FLAC__FILE_DECODER_UNINITIALIZED)
 463                 FLAC__file_decoder_finish(decoder);
 464 }
 465
 466 void safe_decoder_delete_(FLAC__FileDecoder *decoder)
 467 {
 468         if(decoder) {
 469                 safe_decoder_finish_(decoder);
 470                 FLAC__file_decoder_delete(decoder);
 471         }
 472 }
 473
 474 FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__FileDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
 475 {
 476         file_info_struct *file_info = (file_info_struct *)client_data;
 477         const unsigned channels = file_info->channels, wide_samples = frame->header.blocksize;
 478         unsigned wide_sample, offset_sample, channel;
 479
 480         (void)decoder;
 481
 482         if(file_info->abort_flag)
 483                 return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
 484
 485         for(offset_sample = wide_samples_in_reservoir_ * channels, wide_sample = 0; wide_sample < wide_samples; wide_sample++)
 486                 for(channel = 0; channel < channels; channel++, offset_sample++)
 487                         reservoir_[offset_sample] = buffer[channel][wide_sample];
 488
 489         wide_samples_in_reservoir_ += wide_samples;
 490
 491         return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
 492 }
 493
 494 void metadata_callback_(const FLAC__FileDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
 495 {
 496         file_info_struct *file_info = (file_info_struct *)client_data;
 497         (void)decoder;
 498         if(metadata->type == FLAC__METADATA_TYPE_STREAMINFO) {
 499                 FLAC__ASSERT(metadata->data.stream_info.total_samples < 0x100000000); /* this plugin can only handle < 4 gigasamples */
 500                 file_info->total_samples = (unsigned)(metadata->data.stream_info.total_samples&0xffffffff);
 501                 file_info->bits_per_sample = metadata->data.stream_info.bits_per_sample;
 502                 file_info->channels = metadata->data.stream_info.channels;
 503                 file_info->sample_rate = metadata->data.stream_info.sample_rate;
 504
 505 #ifdef FLAC__DO_DITHER
 506                 if(file_info->bits_per_sample == 8) {
 507                         file_info->sample_format = FMT_S8;
 508                 }
 509                 else if(file_info->bits_per_sample == 16 || file_info->bits_per_sample == 24) {
 510                         file_info->sample_format = FMT_S16_LE;
 511                 }
 512                 else {
 513                         /*@@@ need some error here like wa2: MessageBox(mod_.hMainWindow, "ERROR: plugin can only handle 8/16/24-bit samples\n", "ERROR: plugin can only handle 8/16/24-bit samples", 0); */
 514                         file_info->abort_flag = true;
 515                         return;
 516                 }
 517 #else
 518                 if(file_info->bits_per_sample == 8) {
 519                         file_info->sample_format = FMT_S8;
 520                 }
 521                 else if(file_info->bits_per_sample == 16) {
 522                         file_info->sample_format = FMT_S16_LE;
 523                 }
 524                 else {
 525                         /*@@@ 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); */
 526                         file_info->abort_flag = true;
 527                         return;
 528                 }
 529 #endif
 530                 file_info->length_in_msec = file_info->total_samples * 10 / (file_info->sample_rate / 100);
 531         }
 532         else if(metadata->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
 533                 double gain, peak;
 534                 if(grabbag__replaygain_load_from_vorbiscomment(metadata, flac_cfg.output.replaygain.album_mode, &gain, &peak)) {
 535                         file_info_.has_replaygain = true;
 536                         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);
 537                 }
 538         }
 539 }
 540
 541 void error_callback_(const FLAC__FileDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
 542 {
 543         file_info_struct *file_info = (file_info_struct *)client_data;
 544         (void)decoder;
 545         if(status != FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC)
 546                 file_info->abort_flag = true;
 547 }