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/******************************************************************************
* recordMyDesktop *
*******************************************************************************
* *
* Copyright (C) 2006,2007,2008 John Varouhakis *
* *
* *
* 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 *
* *
* *
* *
* For further information contact me at johnvarouhakis@gmail.com *
******************************************************************************/
#include "config.h"
#include "rmd_capture_sound.h"
#include "rmd_jack.h"
#include "rmd_opendev.h"
#include "rmd_types.h"
#include <pthread.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <unistd.h>
#include <stdlib.h>
void *rmdCaptureSound(ProgData *pdata) {
#ifdef HAVE_LIBASOUND
int frames=pdata->periodsize;
#endif
//start capturing only after first frame is taken
usleep(pdata->frametime);
while (pdata->running) {
int sret=0;
SndBuffer *newbuf,*tmp;
if (pdata->paused) {
#ifdef HAVE_LIBASOUND
if (!pdata->hard_pause) {
snd_pcm_pause(pdata->sound_handle,1);
pthread_mutex_lock(&pdata->pause_mutex);
pthread_cond_wait(&pdata->pause_cond, &pdata->pause_mutex);
pthread_mutex_unlock(&pdata->pause_mutex);
snd_pcm_pause(pdata->sound_handle,0);
} else {//device doesn't support pause(is this the norm?mine doesn't)
snd_pcm_close(pdata->sound_handle);
pthread_mutex_lock(&pdata->pause_mutex);
pthread_cond_wait(&pdata->pause_cond, &pdata->pause_mutex);
pthread_mutex_unlock(&pdata->pause_mutex);
pdata->sound_handle=
rmdOpenDev(pdata->args.device,
&pdata->args.channels,
&pdata->args.frequency,
&pdata->args.buffsize,
NULL,
NULL,
NULL//let's hope that the device capabilities
//didn't magically change
);
if (pdata->sound_handle==NULL) {
fprintf(stderr,"Couldn't reopen sound device.Exiting\n");
pdata->running = FALSE;
errno=3;
pthread_exit(&errno);
}
}
#else
close(pdata->sound_handle);
pthread_mutex_lock(&pdata->pause_mutex);
pthread_cond_wait(&pdata->pause_cond, &pdata->pause_mutex);
pthread_mutex_unlock(&pdata->pause_mutex);
pdata->sound_handle=
rmdOpenDev(pdata->args.device,
pdata->args.channels,
pdata->args.frequency);
if (pdata->sound_handle<0) {
fprintf(stderr,"Couldn't reopen sound device.Exiting\n");
pdata->running = FALSE;
errno=3;
pthread_exit(&errno);
}
#endif
}
//create new buffer
newbuf=(SndBuffer *)malloc(sizeof(SndBuffer));
#ifdef HAVE_LIBASOUND
newbuf->data=(signed char *)malloc(frames*pdata->sound_framesize);
#else
newbuf->data=(signed char *)malloc(((pdata->args.buffsize<<1)*
pdata->args.channels));
#endif
newbuf->next=NULL;
//read data into new buffer
#ifdef HAVE_LIBASOUND
while (sret<frames) {
int temp_sret=snd_pcm_readi(pdata->sound_handle,
newbuf->data+pdata->sound_framesize*sret,
frames-sret);
if (temp_sret==-EPIPE) {
fprintf(stderr,"%s: Overrun occurred.\n",
snd_strerror(temp_sret));
snd_pcm_prepare(pdata->sound_handle);
} else if (temp_sret<0) {
fprintf(stderr,"An error occured while reading sound data:\n"
" %s\n",
snd_strerror(temp_sret));
snd_pcm_prepare(pdata->sound_handle);
} else
sret+=temp_sret;
}
#else
sret=0;
//oss recording loop
do {
int temp_sret=read(pdata->sound_handle,
&newbuf->data[sret],
((pdata->args.buffsize<<1)*
pdata->args.channels)-sret);
if (temp_sret<0) {
fprintf(stderr,"An error occured while reading from soundcard"
"%s\n"
"Error description:\n"
"%s\n",pdata->args.device,strerror(errno));
} else
sret+=temp_sret;
} while (sret<((pdata->args.buffsize<<1)*
pdata->args.channels));
#endif
//queue the new buffer
pthread_mutex_lock(&pdata->sound_buffer_mutex);
tmp=pdata->sound_buffer;
if (pdata->sound_buffer==NULL)
pdata->sound_buffer=newbuf;
else {
while (tmp->next!=NULL)
tmp=tmp->next;
tmp->next=newbuf;
}
pthread_mutex_unlock(&pdata->sound_buffer_mutex);
//signal that there are data to be proccessed
pthread_mutex_lock(&pdata->snd_buff_ready_mutex);
pthread_cond_signal(&pdata->sound_data_read);
pthread_mutex_unlock(&pdata->snd_buff_ready_mutex);
}
#ifdef HAVE_LIBASOUND
snd_pcm_close(pdata->sound_handle);
#else
close(pdata->sound_handle);
#endif
pthread_exit(&errno);
}
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