Teletext support for V4Lv1

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@23946 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
voroshil 2007-07-30 18:00:11 +00:00
parent aae0e9dcde
commit 8ff547240b
1 changed files with 174 additions and 0 deletions

View File

@ -142,6 +142,14 @@ typedef struct {
long audio_recv_blocks_total;
long audio_sent_blocks_total;
long mjpeg_bufsize;
#ifdef HAVE_TV_TELETEXT
char *vbi_dev;
int vbi_fd;
int vbi_bufsize;
int vbi_shutdown;
pthread_t vbi_grabber_thread;
void *priv_vbi;
#endif
tv_param_t *tv_param;
} priv_t;
@ -655,6 +663,27 @@ err:
static int uninit(priv_t *priv)
{
unsigned long num;
#ifdef HAVE_TV_TELETEXT
priv->vbi_shutdown=1;
if(priv->vbi_grabber_thread)
pthread_join(priv->vbi_grabber_thread, NULL);
teletext_control(priv->priv_vbi,TV_VBI_CONTROL_STOP,(void*)1);
priv->priv_vbi=NULL;
if(priv->vbi_fd){
close(priv->vbi_fd);
priv->vbi_fd=0;
}
if(priv->vbi_dev){
free(priv->vbi_dev);
priv->vbi_dev=0;
}
#endif
priv->shutdown = 1;
mp_msg(MSGT_TV, MSGL_V, "Waiting for threads to finish... ");
@ -739,6 +768,122 @@ static int get_capture_buffer_size(priv_t *priv)
return cnt;
}
#ifdef HAVE_TV_TELETEXT
static int vbi_init(priv_t* priv,char* device)
{
int vbi_fd=0;
struct video_capability cap;
if(!device)
return TVI_CONTROL_FALSE;
priv->vbi_dev=strdup(device);
vbi_fd=open(priv->vbi_dev,O_RDWR);
if(vbi_fd<0){
mp_msg(MSGT_TV,MSGL_ERR,"vbi: could not open device %s\n",priv->vbi_dev);
return TVI_CONTROL_FALSE;
}
if(ioctl(vbi_fd,VIDIOCGCAP,&cap)<0){
mp_msg(MSGT_TV,MSGL_ERR,"vbi: Query capatibilities failed for %s\n",priv->vbi_dev);
close(vbi_fd);
return TVI_CONTROL_FALSE;
}
if(!cap.type & VID_TYPE_CAPTURE){
mp_msg(MSGT_TV,MSGL_ERR,"vbi: %s is not capture device\n",priv->vbi_dev);
close(vbi_fd);
return TVI_CONTROL_FALSE;
}
priv->vbi_fd=vbi_fd;
mp_msg(MSGT_TV,MSGL_DBG3,"vbi: init ok\n");
return TVI_CONTROL_TRUE;
}
static int vbi_get_props(priv_t* priv,tt_stream_props* ptsp)
{
struct vbi_format fmt;
int res;
if(!priv || !ptsp)
return TVI_CONTROL_FALSE;
memset(&fmt,0,sizeof(struct vbi_format));
if((res=ioctl(priv->vbi_fd,VIDIOCGVBIFMT,&fmt))<0){
mp_msg(MSGT_TV,MSGL_ERR,"vbi_get_props: Query format failed: %x\n",res);
return TVI_CONTROL_FALSE;
}
ptsp->interlaced=(fmt.flags& VBI_INTERLACED?1:0);
if(fmt.start[1]>0 && fmt.count[1]){
if(fmt.start[1]>=286)
//625
ptsp->offset=10.2e-6*fmt.sampling_rate;
else
//525
ptsp->offset=9.2e-6*fmt.sampling_rate;
}else
ptsp->offset=9.7e-6*fmt.sampling_rate;
ptsp->sampling_rate=fmt.sampling_rate;
ptsp->samples_per_line=fmt.samples_per_line,
ptsp->count[0]=fmt.count[0];
ptsp->count[1]=fmt.count[1];
ptsp->bufsize = ptsp->samples_per_line * (ptsp->count[0] + ptsp->count[1]);
mp_msg(MSGT_TV,MSGL_V,"vbi_get_props: sampling_rate=%d,offset:%d,samples_per_line: %d\n interlaced:%s, count=[%d,%d]\n",
ptsp->sampling_rate,
ptsp->offset,
ptsp->samples_per_line,
ptsp->interlaced?"Yes":"No",
ptsp->count[0],
ptsp->count[1]);
return TVI_CONTROL_TRUE;
}
static void *vbi_grabber(void *data)
{
priv_t *priv = (priv_t *) data;
int bytes,seq,prev_seq;
unsigned char* buf;
tt_stream_props tsp;
if(!priv->priv_vbi){
mp_msg(MSGT_TV,MSGL_WARN,"vbi: vbi not initialized. stopping thread.\n");
return NULL;
}
if(vbi_get_props(priv,&tsp)!=TVI_CONTROL_TRUE)
return NULL;
buf=malloc(tsp.bufsize);
seq=0;
prev_seq=0;
mp_msg(MSGT_TV,MSGL_V,"vbi: vbi capture thread started.\n");
while (!priv->vbi_shutdown){
bytes=read(priv->vbi_fd,buf,tsp.bufsize);
if (bytes!=tsp.bufsize){
mp_msg(MSGT_TV,MSGL_WARN,"vbi: expecting bytes: %d, got: %d",tsp.bufsize,bytes);
break;
}
seq=*(int*)(buf+bytes-4);
if(seq<=1) continue;
if (prev_seq && seq!=prev_seq+1){
prev_seq=0;
seq=0;
}
prev_seq=seq;
teletext_control(priv->priv_vbi,TV_VBI_CONTROL_DECODE_PAGE,&buf);
mp_msg(MSGT_TV,MSGL_DBG3,"grabber: seq:%d\n",seq);
}
free(buf);
return NULL;
}
#endif //HAVE_TV_TELETEXT
static int start(priv_t *priv)
{
int i;
@ -951,6 +1096,14 @@ static int start(priv_t *priv)
ioctl(priv->video_fd, VIDIOCSAUDIO, &priv->audio[priv->audio_id]);
}
#ifdef HAVE_TV_TELETEXT
/* start vbi thread */
if(priv->priv_vbi){
priv->vbi_shutdown = 0;
pthread_create(&priv->vbi_grabber_thread, NULL, vbi_grabber, priv);
}
#endif
/* launch capture threads */
priv->shutdown = 0;
if (!priv->tv_param->noaudio) {
@ -1378,6 +1531,27 @@ static int control(priv_t *priv, int cmd, void *arg)
priv->immediate_mode = 1;
return(TVI_CONTROL_TRUE);
}
#ifdef HAVE_TV_TELETEXT
case TVI_CONTROL_VBI_INIT:
{
void* ptr;
tt_stream_props tsp;
if (vbi_init(priv,*(char**)arg)!=TVI_CONTROL_TRUE)
return TVI_CONTROL_FALSE;
if(vbi_get_props(priv,&tsp)==TVI_CONTROL_TRUE)
{
ptr=&tsp;
if(teletext_control(NULL,TV_VBI_CONTROL_START,&ptr)==TVI_CONTROL_TRUE)
priv->priv_vbi=ptr;
else
priv->priv_vbi=NULL;
}
return TVI_CONTROL_TRUE;
}
default:
return teletext_control(priv->priv_vbi,cmd,arg);
#endif
}
return(TVI_CONTROL_UNKNOWN);