static void oggflac_decode(struct decoder *decoder, struct input_stream *input_stream) { if (ogg_stream_type_detect(input_stream) != FLAC) return; /* rewind the stream, because ogg_stream_type_detect() has moved it */ input_stream_lock_seek(input_stream, 0, SEEK_SET, NULL); flac_decode_internal(decoder, input_stream, true); }
/* public */ static void vorbis_stream_decode(struct decoder *decoder, struct input_stream *input_stream) { GError *error = NULL; OggVorbis_File vf; struct vorbis_input_stream vis; struct audio_format audio_format; float total_time; int current_section; int prev_section = -1; long ret; char chunk[OGG_CHUNK_SIZE]; long bitRate = 0; long test; const vorbis_info *vi; enum decoder_command cmd = DECODE_COMMAND_NONE; if (ogg_stream_type_detect(input_stream) != VORBIS) return; /* rewind the stream, because ogg_stream_type_detect() has moved it */ input_stream_lock_seek(input_stream, 0, SEEK_SET, NULL); if (!vorbis_is_open(&vis, &vf, decoder, input_stream)) return; vi = ov_info(&vf, -1); if (vi == NULL) { g_warning("ov_info() has failed"); return; } if (!audio_format_init_checked(&audio_format, vi->rate, SAMPLE_FORMAT_S16, vi->channels, &error)) { g_warning("%s", error->message); g_error_free(error); return; } total_time = ov_time_total(&vf, -1); if (total_time < 0) total_time = 0; decoder_initialized(decoder, &audio_format, vis.seekable, total_time); do { if (cmd == DECODE_COMMAND_SEEK) { double seek_where = decoder_seek_where(decoder); if (0 == ov_time_seek_page(&vf, seek_where)) { decoder_command_finished(decoder); } else decoder_seek_error(decoder); } ret = ov_read(&vf, chunk, sizeof(chunk), OGG_DECODE_USE_BIGENDIAN, 2, 1, ¤t_section); if (ret == OV_HOLE) /* bad packet */ ret = 0; else if (ret <= 0) /* break on EOF or other error */ break; if (current_section != prev_section) { char **comments; vi = ov_info(&vf, -1); if (vi == NULL) { g_warning("ov_info() has failed"); break; } if (vi->rate != (long)audio_format.sample_rate || vi->channels != (int)audio_format.channels) { /* we don't support audio format change yet */ g_warning("audio format change, stopping here"); break; } comments = ov_comment(&vf, -1)->user_comments; vorbis_send_comments(decoder, input_stream, comments); struct replay_gain_info rgi; if (vorbis_comments_to_replay_gain(&rgi, comments)) decoder_replay_gain(decoder, &rgi); prev_section = current_section; } if ((test = ov_bitrate_instant(&vf)) > 0) bitRate = test / 1000; cmd = decoder_data(decoder, input_stream, chunk, ret, bitRate); } while (cmd != DECODE_COMMAND_STOP); ov_clear(&vf); }