void AccessClose( vlc_object_t *obj )
{
access_t *access = (access_t *)obj;
demux_sys_t *sys = (demux_sys_t *)access->p_sys;
ControlsDeinit( obj, sys->controls );
v4l2_close( sys->i_fd );
free( sys );
}
void AccessClose( vlc_object_t *obj )
{
access_t *access = (access_t *)obj;
access_sys_t *sys = access->p_sys;
if (sys->bufv != NULL)
StopMmap (sys->fd, sys->bufv, sys->bufc);
ControlsDeinit( obj, sys->controls );
v4l2_close (sys->fd);
free( sys );
}
void DemuxClose( vlc_object_t *obj )
{
demux_t *demux = (demux_t *)obj;
demux_sys_t *sys = demux->p_sys;
int fd = sys->i_fd;
/* Stop video capture */
switch( sys->io )
{
case IO_METHOD_READ:
/* Nothing to do */
break;
case IO_METHOD_MMAP:
case IO_METHOD_USERPTR:
{
/* NOTE: Some buggy drivers hang if buffers are not unmapped before
* streamoff */
for( unsigned i = 0; i < sys->i_nbuffers; i++ )
{
struct v4l2_buffer buf = {
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
.memory = ( sys->io == IO_METHOD_USERPTR ) ?
V4L2_MEMORY_USERPTR : V4L2_MEMORY_MMAP,
};
v4l2_ioctl( fd, VIDIOC_DQBUF, &buf );
}
enum v4l2_buf_type buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
v4l2_ioctl( sys->i_fd, VIDIOC_STREAMOFF, &buf_type );
break;
}
}
/* Free Video Buffers */
if( sys->p_buffers ) {
switch( sys->io )
{
case IO_METHOD_READ:
free( sys->p_buffers[0].start );
break;
case IO_METHOD_MMAP:
for( unsigned i = 0; i < sys->i_nbuffers; ++i )
v4l2_munmap( sys->p_buffers[i].start,
sys->p_buffers[i].length );
break;
case IO_METHOD_USERPTR:
for( unsigned i = 0; i < sys->i_nbuffers; ++i )
free( sys->p_buffers[i].start );
break;
}
free( sys->p_buffers );
}
ControlsDeinit( obj, sys->controls );
v4l2_close( fd );
free( sys );
}
static int DemuxControl( demux_t *demux, int query, va_list args )
{
switch( query )
{
/* Special for access_demux */
case DEMUX_CAN_PAUSE:
case DEMUX_CAN_SEEK:
case DEMUX_CAN_CONTROL_PACE:
*va_arg( args, bool * ) = false;
return VLC_SUCCESS;
case DEMUX_GET_PTS_DELAY:
*va_arg(args,int64_t *) = INT64_C(1000)
* var_InheritInteger( demux, "live-caching" );
return VLC_SUCCESS;
case DEMUX_GET_TIME:
*va_arg( args, int64_t * ) = mdate();
return VLC_SUCCESS;
/* TODO implement others */
default:
return VLC_EGENERIC;
}
return VLC_EGENERIC;
}
/** Gets a frame in read/write mode */
static block_t *BlockRead( vlc_object_t *obj, int fd, size_t size )
{
block_t *block = block_Alloc( size );
if( unlikely(block == NULL) )
return NULL;
ssize_t val = v4l2_read( fd, block->p_buffer, size );
if( val == -1 )
{
block_Release( block );
switch( errno )
{
case EAGAIN:
return NULL;
case EIO: /* could be ignored per specification */
/* fall through */
default:
msg_Err( obj, "cannot read frame: %m" );
return NULL;
}
}
block->i_buffer = val;
return block;
}
