b73ecbb073
Provide a struct type which can be forward-declared. The typedef InputStream is deprecated now.
217 lines
5.3 KiB
C
217 lines
5.3 KiB
C
/* the Music Player Daemon (MPD)
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* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
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* Copyright (C) 2008 Max Kellermann <max@duempel.org>
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* This project's homepage is: http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "decoder_internal.h"
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#include "decoder_list.h"
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#include "decoder_control.h"
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#include "player_control.h"
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#include "audio.h"
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#include "song.h"
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#include "utils.h"
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#include "normalize.h"
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#include "outputBuffer.h"
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#include "gcc.h"
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#include <assert.h>
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void decoder_plugin_register(struct decoder_plugin *plugin)
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{
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decoder_plugin_load(plugin);
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}
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void decoder_plugin_unregister(struct decoder_plugin *plugin)
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{
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decoder_plugin_unload(plugin);
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}
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void decoder_initialized(struct decoder * decoder,
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const struct audio_format *audio_format,
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float total_time)
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{
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assert(dc.state == DECODE_STATE_START);
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memset(&decoder->conv_state, 0, sizeof(decoder->conv_state));
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if (audio_format != NULL) {
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dc.audioFormat = *audio_format;
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getOutputAudioFormat(audio_format,
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&(ob.audioFormat));
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}
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dc.totalTime = total_time;
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dc.state = DECODE_STATE_DECODE;
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notify_signal(&pc.notify);
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}
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const char *decoder_get_url(mpd_unused struct decoder * decoder, char * buffer)
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{
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return song_get_url(dc.current_song, buffer);
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}
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enum decoder_command decoder_get_command(mpd_unused struct decoder * decoder)
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{
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return dc.command;
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}
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void decoder_command_finished(mpd_unused struct decoder * decoder)
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{
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assert(dc.command != DECODE_COMMAND_NONE);
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assert(dc.command != DECODE_COMMAND_SEEK ||
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dc.seekError || decoder->seeking);
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dc.command = DECODE_COMMAND_NONE;
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notify_signal(&pc.notify);
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}
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double decoder_seek_where(mpd_unused struct decoder * decoder)
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{
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assert(dc.command == DECODE_COMMAND_SEEK);
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decoder->seeking = true;
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return dc.seekWhere;
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}
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void decoder_seek_error(struct decoder * decoder)
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{
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assert(dc.command == DECODE_COMMAND_SEEK);
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dc.seekError = 1;
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decoder_command_finished(decoder);
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}
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size_t decoder_read(struct decoder *decoder,
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struct input_stream *inStream,
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void *buffer, size_t length)
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{
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size_t nbytes;
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assert(inStream != NULL);
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assert(buffer != NULL);
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while (1) {
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/* XXX don't allow decoder==NULL */
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if (decoder != NULL &&
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(dc.command != DECODE_COMMAND_SEEK ||
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!decoder->seeking) &&
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dc.command != DECODE_COMMAND_NONE)
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return 0;
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nbytes = readFromInputStream(inStream, buffer, 1, length);
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if (nbytes > 0 || inputStreamAtEOF(inStream))
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return nbytes;
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/* sleep for a fraction of a second! */
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/* XXX don't sleep, wait for an event instead */
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my_usleep(10000);
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}
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}
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/**
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* All chunks are full of decoded data; wait for the player to free
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* one.
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*/
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static enum decoder_command
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need_chunks(struct decoder *decoder,
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struct input_stream *inStream, int seekable)
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{
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if (dc.command == DECODE_COMMAND_STOP)
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return DECODE_COMMAND_STOP;
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if (dc.command == DECODE_COMMAND_SEEK) {
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if (seekable) {
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return DECODE_COMMAND_SEEK;
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} else {
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decoder_seek_error(decoder);
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}
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}
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if (!inStream ||
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bufferInputStream(inStream) <= 0) {
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notify_wait(&dc.notify);
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notify_signal(&pc.notify);
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}
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return DECODE_COMMAND_NONE;
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}
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enum decoder_command
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decoder_data(struct decoder *decoder,
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struct input_stream *inStream, int seekable,
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void *dataIn, size_t dataInLen,
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float data_time, uint16_t bitRate,
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ReplayGainInfo * replayGainInfo)
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{
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size_t nbytes;
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char *data;
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size_t datalen;
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static char *convBuffer;
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static size_t convBufferLen;
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int ret;
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if (audio_format_equals(&ob.audioFormat, &dc.audioFormat)) {
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data = dataIn;
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datalen = dataInLen;
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} else {
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datalen = pcm_sizeOfConvBuffer(&(dc.audioFormat), dataInLen,
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&(ob.audioFormat));
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if (datalen > convBufferLen) {
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if (convBuffer != NULL)
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free(convBuffer);
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convBuffer = xmalloc(datalen);
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convBufferLen = datalen;
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}
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data = convBuffer;
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datalen = pcm_convertAudioFormat(&(dc.audioFormat), dataIn,
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dataInLen, &(ob.audioFormat),
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data, &decoder->conv_state);
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}
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if (replayGainInfo != NULL && (replayGainState != REPLAYGAIN_OFF))
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doReplayGain(replayGainInfo, data, datalen, &ob.audioFormat);
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else if (normalizationEnabled)
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normalizeData(data, datalen, &ob.audioFormat);
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while (datalen > 0) {
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nbytes = ob_append(data, datalen, data_time, bitRate);
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datalen -= nbytes;
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data += nbytes;
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if (datalen > 0) {
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ret = need_chunks(decoder, inStream, seekable);
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if (ret != 0)
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return ret;
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}
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}
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return DECODE_COMMAND_NONE;
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}
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void decoder_flush(mpd_unused struct decoder *decoder)
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{
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ob_flush();
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}
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void decoder_clear(mpd_unused struct decoder *decoder)
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{
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ob_clear();
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}
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