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/* the Music Player Daemon (MPD)
* (c)2003-2006 by Warren Dukes (shank@mercury.chem.pitt.edu)
* 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 "outputBuffer.h"
#include "pcm_utils.h"
#include "playerData.h"
#include "utils.h"
#include "log.h"
#include <string.h>
static mpd_sint16 currentChunk = -1;
static mpd_sint8 currentMetaChunk = -1;
static mpd_sint8 sendMetaChunk = 0;
void clearAllMetaChunkSets(OutputBuffer * cb) {
memset(cb->metaChunkSet, 0, BUFFERED_METACHUNKS);
}
void clearOutputBuffer(OutputBuffer * cb) {
int currentSet = 1;
currentChunk = -1;
cb->end = cb->begin;
/* be sure to reset metaChunkSets cause we are skipping over audio
* audio chunks, and thus skipping over metadata */
if(sendMetaChunk == 0 && currentMetaChunk >= 0) {
currentSet = cb->metaChunkSet[currentChunk];
}
clearAllMetaChunkSets(cb);
if(sendMetaChunk == 0 && currentMetaChunk >= 0) {
cb->metaChunkSet[currentChunk] = currentSet;
}
}
void flushOutputBuffer(OutputBuffer * cb) {
if(currentChunk == cb->end) {
int next = cb->end+1;
if(next>=buffered_chunks) {
next = 0;
}
cb->end = next;
currentChunk = -1;
}
}
int sendDataToOutputBuffer(OutputBuffer * cb, InputStream * inStream,
DecoderControl * dc, int seekable, char * dataIn,
long dataInLen, float time, mpd_uint16 bitRate,
ReplayGainInfo * replayGainInfo)
{
mpd_uint16 dataToSend;
mpd_uint16 chunkLeft;
char * data;
size_t datalen;
static char * convBuffer = NULL;
static long convBufferLen = 0;
if(cmpAudioFormat(&(cb->audioFormat),&(dc->audioFormat))==0)
{
data = dataIn;
datalen = dataInLen;
}
else {
datalen = pcm_sizeOfOutputBufferForAudioFormatConversion(
&(dc->audioFormat), dataInLen,
&(cb->audioFormat));
if(datalen > convBufferLen) {
convBuffer = realloc(convBuffer,datalen);
convBufferLen = datalen;
}
data = convBuffer;
pcm_convertAudioFormat(&(dc->audioFormat), dataIn, dataInLen,
&(cb->audioFormat),data);
}
if(replayGainInfo) {
doReplayGain(replayGainInfo, data, datalen, &cb->audioFormat);
}
while(datalen) {
if(currentChunk != cb->end) {
int next = cb->end+1;
if(next>=buffered_chunks) {
next = 0;
}
while(cb->begin==next && !dc->stop) {
if(dc->seek) {
if(seekable) {
return OUTPUT_BUFFER_DC_SEEK;
}
else {
dc->seekError = 1;
dc->seek = 0;
}
}
if(!inStream ||
bufferInputStream(inStream) <= 0)
{
my_usleep(10000);
}
}
if(dc->stop) return OUTPUT_BUFFER_DC_STOP;
currentChunk = cb->end;
cb->chunkSize[currentChunk] = 0;
if(sendMetaChunk) {
cb->metaChunk[currentChunk] = currentMetaChunk;
}
else cb->metaChunk[currentChunk] = -1;
cb->bitRate[currentChunk] = bitRate;
cb->times[currentChunk] = time;
}
chunkLeft = CHUNK_SIZE-cb->chunkSize[currentChunk];
dataToSend = datalen > chunkLeft ? chunkLeft : datalen;
memcpy(cb->chunks+currentChunk*CHUNK_SIZE+
cb->chunkSize[currentChunk],
data, dataToSend);
cb->chunkSize[currentChunk]+= dataToSend;
datalen-= dataToSend;
data+= dataToSend;
if(cb->chunkSize[currentChunk] == CHUNK_SIZE) {
flushOutputBuffer(cb);
}
}
return 0;
}
int copyMpdTagToOutputBuffer(OutputBuffer * cb, MpdTag * tag) {
int nextChunk;
static MpdTag * last = NULL;
if(!cb->acceptMetadata || !tag) {
sendMetaChunk = 0;
if(last) freeMpdTag(last);
last = NULL;
DEBUG("copyMpdTagToOB: !acceptMetadata || !tag\n");
return 0;
}
if(last && mpdTagsAreEqual(last, tag)) {
DEBUG("copyMpdTagToOB: same as last\n");
return 0;
}
if(last) freeMpdTag(last);
last = NULL;
nextChunk = currentMetaChunk+1;
if(nextChunk >= BUFFERED_METACHUNKS) nextChunk = 0;
if(cb->metaChunkSet[nextChunk]) {
sendMetaChunk = 0;
DEBUG("copyMpdTagToOB: metachunk in use!\n");
return -1;
}
sendMetaChunk = 1;
currentMetaChunk = nextChunk;
last = mpdTagDup(tag);
copyMpdTagToMetadataChunk(tag, &(cb->metadataChunks[currentMetaChunk]));
cb->metaChunkSet[nextChunk] = 1;
DEBUG("copyMpdTagToOB: copiedTag\n");
return 0;
}
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