static void *msv4l2_thread(void *ptr){
V4l2State *s=(V4l2State*)ptr;
int try=0;
ms_message("msv4l2_thread starting");
if (s->fd==-1){
if( msv4l2_open(s)!=0){
ms_warning("msv4l2 could not be openned");
goto close;
}
}
if (!s->configured && msv4l2_configure(s)!=0){
ms_warning("msv4l2 could not be configured");
goto close;
}
if (msv4l2_do_mmap(s)!=0)
{
ms_warning("msv4l2 do mmap");
goto close;
}
ms_message("V4L2 video capture started.");
while(s->thread_run)
{
if (s->fd!=-1){
mblk_t *m;
m=v4lv2_grab_image(s,50);
if (m){
mblk_t *om=dupmsg(m);
mblk_set_marker_info(om,(s->pix_fmt==MS_MJPEG));
ms_mutex_lock(&s->mutex);
putq(&s->rq,om);
ms_mutex_unlock(&s->mutex);
}
}
}
/*dequeue pending buffers so that we can properly unref them (avoids memleak )*/
while(s->queued && try<10){
v4l2_dequeue_ready_buffer(s,50);
try++;
}
if (try==10) ms_warning("msv4l2: buffers not dequeued at exit !");
msv4l2_do_munmap(s);
close:
msv4l2_close(s);
ms_message("msv4l2_thread exited.");
ms_thread_exit(NULL);
return NULL;
}
static void msv4l2_preprocess(MSFilter *f){
V4l2State *s=(V4l2State*)f->data;
s->thread_run=TRUE;
ms_thread_create(&s->thread,NULL,msv4l2_thread,s);
s->th_frame_count=-1;
s->mean_inter_frame=0;
}
static void *msv4l2_thread(void *ptr){
V4l2State *s=(V4l2State*)ptr;
int err=-1;
ms_message("msv4l2_thread starting");
if (s->fd!=-1)
{
ms_warning("msv4l2 file descriptor already openned fd:%d",s->fd);
goto exit;
}
if( msv4l2_open(s)!=0){
ms_warning("msv4l2 could not be openned");
goto close;
}
if (!s->configured && msv4l2_configure(s)!=0){
ms_warning("msv4l2 could not be configured");
goto close;
}
if (msv4l2_do_mmap(s)!=0)
{
ms_warning("msv4l2 do mmap");
goto close;
}
ms_message("V4L2 video capture started.");
while(s->thread_run)
{
mblk_t *m;
if (s->fd!=-1){
mblk_t *m;
m=v4lv2_grab_image(s);
if (m){
mblk_t *om=dupb(m);
mblk_set_marker_info(om,(s->pix_fmt==MS_MJPEG));
ms_mutex_lock(&s->mutex);
putq(&s->rq,om);
ms_mutex_unlock(&s->mutex);
}
}
}
ms_message("thread:%d",s->thread_run);
munmap:
msv4l2_do_munmap(s);
close:
msv4l2_close(s);
exit:
ms_message("msv4l2_thread exited.");
s->fd = -1;
ms_thread_exit(NULL);
}
static void msv4l2_postprocess(MSFilter *f){
V4l2State *s=(V4l2State*)f->data;
#ifdef V4L2_THREADED
s->thread_run = FALSE;
if(ms_thread_join(s->thread,NULL))
ms_warning("msv4l2 thread was already stopped");
else
ms_message("msv4l2 thread has joined.");
flushq(&s->rq,0);
#else
if (s->fd!=-1){
msv4l2_do_munmap(s);
msv4l2_close(s);
}
#endif
}