int DemuxOpen( vlc_object_t *obj )
{
demux_t *demux = (demux_t *)obj;
demux_sys_t *sys = malloc (sizeof (*sys));
if (unlikely(sys == NULL))
return VLC_ENOMEM;
demux->p_sys = sys;
ParseMRL( obj, demux->psz_location );
char *path = var_InheritString (obj, CFG_PREFIX"dev");
if (unlikely(path == NULL))
goto error; /* probably OOM */
msg_Dbg (obj, "opening device '%s'", path);
int rawfd = vlc_open (path, O_RDWR);
if (rawfd == -1)
{
msg_Err (obj, "cannot open device '%s': %m", path);
free (path);
goto error;
}
free (path);
int fd = v4l2_fd_open (rawfd, 0);
if (fd == -1)
{
msg_Warn (obj, "cannot initialize user-space library: %m");
/* fallback to direct kernel mode anyway */
fd = rawfd;
}
sys->fd = fd;
if (InitVideo (demux, fd))
{
v4l2_close (fd);
goto error;
}
sys->controls = ControlsInit (VLC_OBJECT(demux), fd);
demux->pf_demux = NULL;
demux->pf_control = DemuxControl;
demux->info.i_update = 0;
demux->info.i_title = 0;
demux->info.i_seekpoint = 0;
return VLC_SUCCESS;
error:
free (sys);
return VLC_EGENERIC;
}
int DemuxOpen( vlc_object_t *obj )
{
demux_t *demux = (demux_t *)obj;
demux_sys_t *sys = malloc (sizeof (*sys));
if (unlikely(sys == NULL))
return VLC_ENOMEM;
demux->p_sys = sys;
#ifdef ZVBI_COMPILED
sys->vbi = NULL;
#endif
ParseMRL( obj, demux->psz_location );
char *path = var_InheritString (obj, CFG_PREFIX"dev");
if (unlikely(path == NULL))
goto error; /* probably OOM */
uint32_t caps;
int fd = OpenDevice (obj, path, &caps);
free (path);
if (fd == -1)
goto error;
sys->fd = fd;
if (InitVideo (demux, fd, caps))
{
v4l2_close (fd);
goto error;
}
sys->controls = ControlsInit (VLC_OBJECT(demux), fd);
sys->start = mdate ();
demux->pf_demux = NULL;
demux->pf_control = DemuxControl;
demux->info.i_update = 0;
demux->info.i_title = 0;
demux->info.i_seekpoint = 0;
return VLC_SUCCESS;
error:
free (sys);
return VLC_EGENERIC;
}
int AccessOpen( vlc_object_t *obj )
{
access_t *access = (access_t *)obj;
access_InitFields( access );
access_sys_t *sys = calloc (1, sizeof (*sys));
if( unlikely(sys == NULL) )
return VLC_ENOMEM;
access->p_sys = sys;
ParseMRL( obj, access->psz_location );
char *path = var_InheritString (obj, CFG_PREFIX"dev");
if (unlikely(path == NULL))
goto error; /* probably OOM */
uint32_t caps;
int fd = OpenDevice (obj, path, &caps);
free (path);
if (fd == -1)
goto error;
sys->fd = fd;
if (InitVideo (access, fd, caps))
{
v4l2_close (fd);
goto error;
}
sys->controls = ControlsInit (VLC_OBJECT(access), fd);
access->pf_seek = NULL;
access->pf_control = AccessControl;
return VLC_SUCCESS;
error:
free (sys);
return VLC_EGENERIC;
}
int InitVideo (access_t *access, int fd, uint32_t caps)
{
access_sys_t *sys = access->p_sys;
if (!(caps & V4L2_CAP_VIDEO_CAPTURE))
{
msg_Err (access, "not a video capture device");
return -1;
}
if (SetupInput (VLC_OBJECT(access), fd))
return -1;
sys->controls = ControlsInit (VLC_OBJECT(access), fd);
/* Try and find default resolution if not specified */
struct v4l2_format fmt = { .type = V4L2_BUF_TYPE_VIDEO_CAPTURE };
if (v4l2_ioctl (fd, VIDIOC_G_FMT, &fmt) < 0)
{
msg_Err (access, "cannot get default format: %m");
return -1;
}
/* Print extra info */
msg_Dbg (access, "%d bytes maximum for complete image",
fmt.fmt.pix.sizeimage );
/* Check interlacing */
switch (fmt.fmt.pix.field)
{
case V4L2_FIELD_INTERLACED:
msg_Dbg (access, "Interlacing setting: interleaved");
/*if (NTSC)
sys->block_flags = BLOCK_FLAG_BOTTOM_FIELD_FIRST;
else*/
sys->block_flags = BLOCK_FLAG_TOP_FIELD_FIRST;
break;
case V4L2_FIELD_INTERLACED_TB:
msg_Dbg (access, "Interlacing setting: interleaved top bottom" );
sys->block_flags = BLOCK_FLAG_TOP_FIELD_FIRST;
break;
case V4L2_FIELD_INTERLACED_BT:
msg_Dbg (access, "Interlacing setting: interleaved bottom top" );
sys->block_flags = BLOCK_FLAG_BOTTOM_FIELD_FIRST;
break;
default:
break;
}
/* Init I/O method */
if (caps & V4L2_CAP_STREAMING)
{
sys->bufc = 4;
sys->bufv = StartMmap (VLC_OBJECT(access), fd, &sys->bufc);
if (sys->bufv == NULL)
return -1;
access->pf_block = AccessRead;
}
else if (caps & V4L2_CAP_READWRITE)
{
sys->blocksize = fmt.fmt.pix.sizeimage;
sys->bufv = NULL;
access->pf_read = AccessReadStream;
}
else
{
msg_Err (access, "no supported I/O method");
return -1;
}
return 0;
}
