From 8ff547240b3dfe18e22ccf6ebb4b3652ebbb4c87 Mon Sep 17 00:00:00 2001 From: voroshil Date: Mon, 30 Jul 2007 18:00:11 +0000 Subject: Teletext support for V4Lv1 git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@23946 b3059339-0415-0410-9bf9-f77b7e298cf2 --- stream/tvi_v4l.c | 174 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 174 insertions(+) (limited to 'stream/tvi_v4l.c') diff --git a/stream/tvi_v4l.c b/stream/tvi_v4l.c index b27dda0d5d..bfcf62d916 100644 --- a/stream/tvi_v4l.c +++ b/stream/tvi_v4l.c @@ -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); -- cgit v1.2.3