float decoder_replay_gain(struct decoder *decoder, const struct replay_gain_info *replay_gain_info) { float return_db = 0; assert(decoder != NULL); if (replay_gain_info != NULL) { static unsigned serial; if (++serial == 0) serial = 1; if (REPLAY_GAIN_OFF != replay_gain_mode) { return_db = 20.0 * log10f( replay_gain_tuple_scale( &replay_gain_info->tuples[replay_gain_get_real_mode()], replay_gain_preamp, replay_gain_missing_preamp, replay_gain_limit)); } decoder->replay_gain_info = *replay_gain_info; decoder->replay_gain_serial = serial; if (decoder->chunk != NULL) { /* flush the current chunk because the new replay gain values affect the following samples */ decoder_flush_chunk(decoder); player_lock_signal(); } } else decoder->replay_gain_serial = 0; return return_db; }
void decoder_command_finished(struct decoder *decoder) { struct decoder_control *dc = decoder->dc; decoder_lock(dc); assert(dc->command != DECODE_COMMAND_NONE); assert(dc->command != DECODE_COMMAND_SEEK || dc->seek_error || decoder->seeking); assert(dc->pipe != NULL); if (decoder->seeking) { decoder->seeking = false; /* delete frames from the old song position */ if (decoder->chunk != NULL) { music_buffer_return(dc->buffer, decoder->chunk); decoder->chunk = NULL; } music_pipe_clear(dc->pipe, dc->buffer); decoder->timestamp = dc->seek_where; } dc->command = DECODE_COMMAND_NONE; decoder_unlock(dc); player_lock_signal(); }
void decoder_initialized(struct decoder *decoder, const struct audio_format *audio_format, bool seekable, float total_time) { struct decoder_control *dc = decoder->dc; struct audio_format_string af_string; assert(dc->state == DECODE_STATE_START); assert(dc->pipe != NULL); assert(decoder != NULL); assert(decoder->stream_tag == NULL); assert(decoder->decoder_tag == NULL); assert(!decoder->seeking); assert(audio_format != NULL); assert(audio_format_defined(audio_format)); assert(audio_format_valid(audio_format)); dc->in_audio_format = *audio_format; getOutputAudioFormat(audio_format, &dc->out_audio_format); dc->seekable = seekable; dc->total_time = total_time; decoder_lock(dc); dc->state = DECODE_STATE_DECODE; decoder_unlock(dc); player_lock_signal(); g_debug("audio_format=%s, seekable=%s", audio_format_to_string(&dc->in_audio_format, &af_string), seekable ? "true" : "false"); if (!audio_format_equals(&dc->in_audio_format, &dc->out_audio_format)) g_debug("converting to %s", audio_format_to_string(&dc->out_audio_format, &af_string)); }
/** * Plays all remaining chunks, until the tail of the pipe has been * reached (and no more chunks are queued), or until a command is * received. * * @return true if at least one chunk has been available, false if the * tail of the pipe was already reached */ static bool ao_play(struct audio_output *ao) { bool success; const struct music_chunk *chunk; assert(ao->pipe != NULL); chunk = ao_next_chunk(ao); if (chunk == NULL) /* no chunk available */ return false; ao->chunk_finished = false; while (chunk != NULL && ao->command == AO_COMMAND_NONE) { assert(!ao->chunk_finished); ao->chunk = chunk; success = ao_play_chunk(ao, chunk); if (!success) { assert(ao->chunk == NULL); break; } assert(ao->chunk == chunk); chunk = chunk->next; } ao->chunk_finished = true; g_mutex_unlock(ao->mutex); player_lock_signal(); g_mutex_lock(ao->mutex); return true; }
/** * Sends a #tag as-is to the music pipe. Flushes the current chunk * (decoder.chunk) if there is one. */ static enum decoder_command do_send_tag(struct decoder *decoder, struct input_stream *is, const struct tag *tag) { struct music_chunk *chunk; if (decoder->chunk != NULL) { /* there is a partial chunk - flush it, we want the tag in a new chunk */ decoder_flush_chunk(decoder); player_lock_signal(); } assert(decoder->chunk == NULL); chunk = decoder_get_chunk(decoder, is); if (chunk == NULL) { assert(decoder->dc->command != DECODE_COMMAND_NONE); return decoder->dc->command; } chunk->tag = tag_dup(tag); return DECODE_COMMAND_NONE; }
void decoder_replay_gain(struct decoder *decoder, const struct replay_gain_info *replay_gain_info) { assert(decoder != NULL); if (replay_gain_info != NULL) { static unsigned serial; if (++serial == 0) serial = 1; decoder->replay_gain_info = *replay_gain_info; decoder->replay_gain_serial = serial; if (decoder->chunk != NULL) { /* flush the current chunk because the new replay gain values affect the following samples */ decoder_flush_chunk(decoder); player_lock_signal(); } } else decoder->replay_gain_serial = 0; }
enum decoder_command decoder_data(struct decoder *decoder, struct input_stream *is, const void *_data, size_t length, uint16_t kbit_rate) { struct decoder_control *dc = decoder->dc; const char *data = _data; GError *error = NULL; enum decoder_command cmd; assert(dc->state == DECODE_STATE_DECODE); assert(dc->pipe != NULL); assert(length % audio_format_frame_size(&dc->in_audio_format) == 0); decoder_lock(dc); cmd = decoder_get_virtual_command(decoder); decoder_unlock(dc); if (cmd == DECODE_COMMAND_STOP || cmd == DECODE_COMMAND_SEEK || length == 0) return cmd; /* send stream tags */ if (update_stream_tag(decoder, is)) { if (decoder->decoder_tag != NULL) { /* merge with tag from decoder plugin */ struct tag *tag; tag = tag_merge(decoder->decoder_tag, decoder->stream_tag); cmd = do_send_tag(decoder, is, tag); tag_free(tag); } else /* send only the stream tag */ cmd = do_send_tag(decoder, is, decoder->stream_tag); if (cmd != DECODE_COMMAND_NONE) return cmd; } if (!audio_format_equals(&dc->in_audio_format, &dc->out_audio_format)) { data = pcm_convert(&decoder->conv_state, &dc->in_audio_format, data, length, &dc->out_audio_format, &length, &error); if (data == NULL) { /* the PCM conversion has failed - stop playback, since we have no better way to bail out */ g_warning("%s", error->message); return DECODE_COMMAND_STOP; } } while (length > 0) { struct music_chunk *chunk; char *dest; size_t nbytes; bool full; chunk = decoder_get_chunk(decoder, is); if (chunk == NULL) { assert(dc->command != DECODE_COMMAND_NONE); return dc->command; } dest = music_chunk_write(chunk, &dc->out_audio_format, decoder->timestamp - dc->song->start_ms / 1000.0, kbit_rate, &nbytes); if (dest == NULL) { /* the chunk is full, flush it */ decoder_flush_chunk(decoder); player_lock_signal(); continue; } assert(nbytes > 0); if (nbytes > length) nbytes = length; /* copy the buffer */ memcpy(dest, data, nbytes); /* expand the music pipe chunk */ full = music_chunk_expand(chunk, &dc->out_audio_format, nbytes); if (full) { /* the chunk is full, flush it */ decoder_flush_chunk(decoder); player_lock_signal(); } data += nbytes; length -= nbytes; decoder->timestamp += (double)nbytes / audio_format_time_to_size(&dc->out_audio_format); if (dc->end_ms > 0 && decoder->timestamp >= dc->end_ms / 1000.0) /* the end of this range has been reached: stop decoding */ return DECODE_COMMAND_STOP; } return DECODE_COMMAND_NONE; }