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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 "playerData.h"
#include "conf.h"
#include "log.h"
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int buffered_before_play;
int buffered_chunks;
#define DEFAULT_BUFFER_SIZE 2048
#define DEFAULT_BUFFER_BEFORE_PLAY 25
PlayerData * playerData_pd;
void initPlayerData() {
float perc = DEFAULT_BUFFER_BEFORE_PLAY;
char * test;
int shmid;
int crossfade = 0;
size_t bufferSize = DEFAULT_BUFFER_SIZE;
size_t allocationSize;
OutputBuffer * buffer;
ConfigParam * param;
param = getConfigParam(CONF_AUDIO_BUFFER_SIZE);
if(param) {
bufferSize = strtol(param->value, &test, 10);
if(*test!='\0' || bufferSize<=0) {
ERROR("buffer size \"%s\" is not a positive integer, "
"line %i\n", param->value, param->line);
exit(EXIT_FAILURE);
}
}
bufferSize*=1024;
buffered_chunks = bufferSize/CHUNK_SIZE;
if(buffered_chunks >= 1<<15) {
ERROR("buffer size \"%i\" is too big\n",bufferSize);
exit(EXIT_FAILURE);
}
param = getConfigParam(CONF_BUFFER_BEFORE_PLAY);
if(param) {
perc = strtod(param->value, &test);
if(*test!='%' || perc<0 || perc>100) {
ERROR("buffered before play \"%s\" is not a positive "
"percentage and less than 100 percent, line %i"
"\n", param->value, param->line);
exit(EXIT_FAILURE);
}
}
buffered_before_play = (perc/100)*buffered_chunks;
if(buffered_before_play>buffered_chunks) {
buffered_before_play = buffered_chunks;
}
else if(buffered_before_play<0) buffered_before_play = 0;
allocationSize = buffered_chunks*CHUNK_SIZE; /*actual buffer*/
allocationSize+= buffered_chunks*sizeof(float); /*for times*/
allocationSize+= buffered_chunks*sizeof(mpd_sint16); /*for chunkSize*/
allocationSize+= buffered_chunks*sizeof(mpd_sint16); /*for bitRate*/
allocationSize+= buffered_chunks*sizeof(mpd_sint8); /*for metaChunk*/
allocationSize+= sizeof(PlayerData); /*for playerData struct*/
if((shmid = shmget(IPC_PRIVATE,allocationSize,IPC_CREAT|0600))<0) {
ERROR("problems shmget'ing\n");
exit(EXIT_FAILURE);
}
if((playerData_pd = shmat(shmid,NULL,0))<0) {
ERROR("problems shmat'ing\n");
exit(EXIT_FAILURE);
}
if (shmctl(shmid, IPC_RMID, 0)<0) {
ERROR("problems shmctl'ing\n");
exit(EXIT_FAILURE);
}
buffer = &(playerData_pd->buffer);
buffer->chunks = ((char *)playerData_pd)+sizeof(PlayerData);
buffer->chunkSize = (mpd_uint16 *)(((char *)buffer->chunks)+
buffered_chunks*CHUNK_SIZE);
buffer->bitRate = (mpd_uint16 *)(((char *)buffer->chunkSize)+
buffered_chunks*sizeof(mpd_sint16));
buffer->metaChunk = (mpd_sint8 *)(((char *)buffer->bitRate)+
buffered_chunks*sizeof(mpd_sint16));
buffer->times = (float *)(((char *)buffer->metaChunk)+
buffered_chunks*sizeof(mpd_sint8));
playerData_pd->playerControl.stop = 0;
playerData_pd->playerControl.pause = 0;
playerData_pd->playerControl.play = 0;
playerData_pd->playerControl.error = PLAYER_ERROR_NOERROR;
playerData_pd->playerControl.lockQueue = 0;
playerData_pd->playerControl.unlockQueue = 0;
playerData_pd->playerControl.state = PLAYER_STATE_STOP;
playerData_pd->playerControl.queueState = PLAYER_QUEUE_BLANK;
playerData_pd->playerControl.queueLockState = PLAYER_QUEUE_UNLOCKED;
playerData_pd->playerControl.seek = 0;
memset(playerData_pd->playerControl.utf8url, 0, MAXPATHLEN+1);
memset(playerData_pd->playerControl.erroredUrl, 0, MAXPATHLEN+1);
memset(playerData_pd->playerControl.currentUrl, 0, MAXPATHLEN+1);
playerData_pd->playerControl.crossFade = crossfade;
playerData_pd->playerControl.softwareVolume = 1000;
playerData_pd->playerControl.totalPlayTime = 0;
playerData_pd->playerControl.decode_pid = 0;
playerData_pd->playerControl.metadataState =
PLAYER_METADATA_STATE_WRITE;
playerData_pd->decoderControl.stop = 0;
playerData_pd->decoderControl.start = 0;
playerData_pd->decoderControl.state = DECODE_STATE_STOP;
playerData_pd->decoderControl.seek = 0;
playerData_pd->decoderControl.error = DECODE_ERROR_NOERROR;
memset(playerData_pd->decoderControl.utf8url, 0, MAXPATHLEN+1);
}
PlayerData * getPlayerData() {
return playerData_pd;
}
void freePlayerData() {
shmdt(playerData_pd);
}
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