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/* the Music Player Daemon (MPD)
* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
* Copyright (C) 2008 Max Kellermann <max@duempel.org>
* This project's homepage is: http://www.musicpd.org
*
* 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 "decoder_internal.h"
#include "decoder_control.h"
#include "player_control.h"
#include "audio.h"
#include "song.h"
#include "utils.h"
#include "normalize.h"
#include "pipe.h"
#include "gcc.h"
#include <assert.h>
void decoder_initialized(struct decoder * decoder,
const struct audio_format *audio_format,
float total_time)
{
assert(dc.state == DECODE_STATE_START);
assert(audio_format != NULL);
pcm_convert_init(&decoder->conv_state);
dc.audioFormat = *audio_format;
getOutputAudioFormat(audio_format, &ob.audioFormat);
dc.totalTime = total_time;
dc.state = DECODE_STATE_DECODE;
notify_signal(&pc.notify);
}
const char *decoder_get_url(mpd_unused struct decoder * decoder, char * buffer)
{
return song_get_url(dc.current_song, buffer);
}
enum decoder_command decoder_get_command(mpd_unused struct decoder * decoder)
{
return dc.command;
}
void decoder_command_finished(mpd_unused struct decoder * decoder)
{
assert(dc.command != DECODE_COMMAND_NONE);
assert(dc.command != DECODE_COMMAND_SEEK ||
dc.seekError || decoder->seeking);
if (dc.command == DECODE_COMMAND_SEEK)
/* delete frames from the old song position */
music_pipe_clear();
dc.command = DECODE_COMMAND_NONE;
notify_signal(&pc.notify);
}
double decoder_seek_where(mpd_unused struct decoder * decoder)
{
assert(dc.command == DECODE_COMMAND_SEEK);
decoder->seeking = true;
return dc.seekWhere;
}
void decoder_seek_error(struct decoder * decoder)
{
assert(dc.command == DECODE_COMMAND_SEEK);
dc.seekError = true;
decoder_command_finished(decoder);
}
size_t decoder_read(struct decoder *decoder,
struct input_stream *inStream,
void *buffer, size_t length)
{
size_t nbytes;
assert(inStream != NULL);
assert(buffer != NULL);
while (true) {
/* XXX don't allow decoder==NULL */
if (decoder != NULL &&
(dc.command != DECODE_COMMAND_SEEK ||
!decoder->seeking) &&
dc.command != DECODE_COMMAND_NONE)
return 0;
nbytes = input_stream_read(inStream, buffer, length);
if (nbytes > 0 || input_stream_eof(inStream))
return nbytes;
/* sleep for a fraction of a second! */
/* XXX don't sleep, wait for an event instead */
my_usleep(10000);
}
}
/**
* All chunks are full of decoded data; wait for the player to free
* one.
*/
static enum decoder_command
need_chunks(struct decoder *decoder,
struct input_stream *inStream, int seekable)
{
if (dc.command == DECODE_COMMAND_STOP)
return DECODE_COMMAND_STOP;
if (dc.command == DECODE_COMMAND_SEEK) {
if (seekable) {
return DECODE_COMMAND_SEEK;
} else {
decoder_seek_error(decoder);
}
}
if (!inStream ||
input_stream_buffer(inStream) <= 0) {
notify_wait(&dc.notify);
notify_signal(&pc.notify);
}
return DECODE_COMMAND_NONE;
}
enum decoder_command
decoder_data(struct decoder *decoder,
struct input_stream *inStream, int seekable,
void *dataIn, size_t dataInLen,
float data_time, uint16_t bitRate,
ReplayGainInfo * replayGainInfo)
{
size_t nbytes;
char *data;
size_t datalen;
static char *convBuffer;
static size_t convBufferLen;
if (audio_format_equals(&ob.audioFormat, &dc.audioFormat)) {
data = dataIn;
datalen = dataInLen;
} else {
datalen = pcm_convert_size(&(dc.audioFormat), dataInLen,
&(ob.audioFormat));
if (datalen > convBufferLen) {
if (convBuffer != NULL)
free(convBuffer);
convBuffer = xmalloc(datalen);
convBufferLen = datalen;
}
data = convBuffer;
datalen = pcm_convert(&(dc.audioFormat), dataIn,
dataInLen, &(ob.audioFormat),
data, &decoder->conv_state);
}
if (replayGainInfo != NULL && (replayGainState != REPLAYGAIN_OFF))
doReplayGain(replayGainInfo, data, datalen, &ob.audioFormat);
else if (normalizationEnabled)
normalizeData(data, datalen, &ob.audioFormat);
while (datalen > 0) {
nbytes = music_pipe_append(data, datalen, data_time, bitRate);
datalen -= nbytes;
data += nbytes;
if (datalen > 0) {
enum decoder_command cmd =
need_chunks(decoder, inStream, seekable);
if (cmd != DECODE_COMMAND_NONE)
return cmd;
}
}
return DECODE_COMMAND_NONE;
}
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