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/* the Music Player Daemon (MPD)
* (c)2003-2004 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 <string.h>
static mpd_sint16 currentChunk = -1;
void flushOutputBuffer(OutputBuffer * cb) {
if(currentChunk == cb->end) {
cb->end++;
if(cb->end>=buffered_chunks) {
cb->end = 0;
cb->wrap = 1;
}
currentChunk = -1;
}
}
int sendDataToOutputBuffer(OutputBuffer * cb, DecoderControl * dc,
char * dataIn, long dataInLen, float time, mpd_uint16 bitRate)
{
mpd_uint16 dataToSend;
mpd_uint16 chunkLeft;
char * data;
size_t datalen;
static char * convBuffer = NULL;
static long convBufferLen = 0;
if(memcmp(&(cb->audioFormat),&(dc->audioFormat),sizeof(AudioFormat))==0)
{
data = dataIn;
datalen = dataInLen;
}
else {
datalen = pcm_sizeOfOutputBufferForAudioFormatConversion(
&(dc->audioFormat), dataIn, dataInLen,
&(cb->audioFormat));
if(datalen > convBufferLen) {
convBuffer = realloc(convBuffer,datalen);
convBufferLen = datalen;
}
data = convBuffer;
pcm_convertAudioFormat(&(dc->audioFormat), dataIn, dataInLen,
&(cb->audioFormat),data);
}
while(datalen) {
if(currentChunk != cb->end) {
while(cb->begin==cb->end && cb->wrap && !dc->stop &&
!dc->seek)
{
my_usleep(10000);
}
if(dc->stop) return OUTPUT_BUFFER_DC_STOP;
if(dc->seek) return OUTPUT_BUFFER_DC_SEEK;
currentChunk = cb->end;
cb->chunkSize[currentChunk] = 0;
}
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;
cb->bitRate[currentChunk] = bitRate;
cb->times[currentChunk] = time;
datalen-= dataToSend;
data+= dataToSend;
if(cb->chunkSize[currentChunk] == CHUNK_SIZE) {
flushOutputBuffer(cb);
}
}
return 0;
}
/* vim:set shiftwidth=4 tabstop=8 expandtab: */
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