[MPlayer-cvslog] r23946 - trunk/stream/tvi_v4l.c
voroshil
subversion at mplayerhq.hu
Mon Jul 30 20:00:11 CEST 2007
Author: voroshil
Date: Mon Jul 30 20:00:11 2007
New Revision: 23946
Log:
Teletext support for V4Lv1
Modified:
trunk/stream/tvi_v4l.c
Modified: trunk/stream/tvi_v4l.c
==============================================================================
--- trunk/stream/tvi_v4l.c (original)
+++ trunk/stream/tvi_v4l.c Mon Jul 30 20:00:11 2007
@@ -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_
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
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);
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