static int AccessControl( access_t *, int, va_list );
static int Demux( demux_t * );
-static ssize_t AccessRead( access_t *, uint8_t *, size_t );
+static block_t *AccessRead( access_t * );
-static block_t* GrabVideo( demux_t *p_demux );
-static block_t* ProcessVideoFrame( demux_t *p_demux, uint8_t *p_frame, size_t );
+static block_t* GrabVideo( vlc_object_t *p_demux, demux_sys_t *p_sys );
+static block_t* ProcessVideoFrame( vlc_object_t *p_demux, uint8_t *p_frame, size_t );
static bool IsPixelFormatSupported( demux_t *p_demux,
unsigned int i_pixelformat );
if( *p_access->psz_access == '\0' ) return VLC_EGENERIC;
access_InitFields( p_access );
- ACCESS_SET_CALLBACKS( AccessRead, NULL, AccessControl, NULL );
+ ACCESS_SET_CALLBACKS( NULL, AccessRead, AccessControl, NULL );
p_sys = calloc( 1, sizeof( demux_sys_t ));
if( !p_sys ) return VLC_ENOMEM;
p_access->p_sys = (access_sys_t*)p_sys;
/*****************************************************************************
* AccessRead: access callback
******************************************************************************/
-static ssize_t AccessRead( access_t * p_access, uint8_t * p_buffer, size_t i_len )
+static block_t *AccessRead( access_t * p_access )
{
- demux_sys_t *p_sys = (demux_sys_t *) p_access->p_sys;
- struct pollfd ufd;
- int i_ret;
-
- ufd.fd = p_sys->i_fd;
- ufd.events = POLLIN;
-
- if( p_access->info.b_eof )
- return 0;
-
- do
- {
- if( !vlc_object_alive (p_access) )
- return 0;
-
- ufd.revents = 0;
- }
- while( ( i_ret = poll( &ufd, 1, 500 ) ) == 0 );
+ demux_sys_t *p_sys = (demux_sys_t *)p_access->p_sys;
- if( i_ret < 0 )
- {
- msg_Err( p_access, "Polling error (%m)." );
- return -1;
- }
+ struct pollfd fd;
+ fd.fd = p_sys->i_fd;
+ fd.events = POLLIN|POLLPRI;
+ fd.revents = 0;
- i_ret = v4l2_read( p_sys->i_fd, p_buffer, i_len );
- if( i_ret == 0 )
- {
- p_access->info.b_eof = true;
- }
- else if( i_ret > 0 )
+ /* Wait for data */
+ if( poll( &fd, 1, 500 ) ) /* Timeout after 0.5 seconds since I don't know if pf_demux can be blocking. */
{
- p_access->info.i_pos += i_ret;
+ if( fd.revents & (POLLIN|POLLPRI) )
+ {
+ return GrabVideo( VLC_OBJECT(p_access), p_sys );
+ }
}
- return i_ret;
+ return NULL;
}
/*****************************************************************************
{
if( fd.revents & (POLLIN|POLLPRI) )
{
- block_t *p_block = GrabVideo( p_demux );
+ block_t *p_block = GrabVideo( VLC_OBJECT(p_demux), p_sys );
if( p_block )
{
es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts );
/*****************************************************************************
* GrabVideo: Grab a video frame
*****************************************************************************/
-static block_t* GrabVideo( demux_t *p_demux )
+static block_t* GrabVideo( vlc_object_t *p_demux, demux_sys_t *p_sys )
{
- demux_sys_t *p_sys = p_demux->p_sys;
-
block_t *p_block = NULL;
struct v4l2_buffer buf;
ssize_t i_ret;
* ProcessVideoFrame: Helper function to take a buffer and copy it into
* a new block
*****************************************************************************/
-static block_t* ProcessVideoFrame( demux_t *p_demux, uint8_t *p_frame, size_t i_size )
+static block_t* ProcessVideoFrame( vlc_object_t *p_demux, uint8_t *p_frame, size_t i_size )
{
block_t *p_block;
/*****************************************************************************
* Helper function to initalise video IO using the Read method
*****************************************************************************/
-static int InitRead( demux_t *p_demux, unsigned int i_buffer_size )
+static int InitRead( vlc_object_t *p_demux, demux_sys_t *p_sys, unsigned int i_buffer_size )
{
- demux_sys_t *p_sys = p_demux->p_sys;
+ (void)p_demux;
p_sys->p_buffers = calloc( 1, sizeof( *p_sys->p_buffers ) );
if( !p_sys->p_buffers )
/*****************************************************************************
* Helper function to initalise video IO using the mmap method
*****************************************************************************/
-static int InitMmap( demux_t *p_demux, int i_fd )
+static int InitMmap( vlc_object_t *p_demux, demux_sys_t *p_sys, int i_fd )
{
- demux_sys_t *p_sys = p_demux->p_sys;
struct v4l2_requestbuffers req;
memset( &req, 0, sizeof(req) );
/*****************************************************************************
* Helper function to initalise video IO using the userbuf method
*****************************************************************************/
-static int InitUserP( demux_t *p_demux, int i_fd, unsigned int i_buffer_size )
+static int InitUserP( vlc_object_t *p_demux, demux_sys_t *p_sys, int i_fd, unsigned int i_buffer_size )
{
- demux_sys_t *p_sys = p_demux->p_sys;
struct v4l2_requestbuffers req;
unsigned int i_page_size;
var_GetBool( p_obj, "v4l2-controls-reset" ), b_demux );
SetAvailControlsByString( p_obj, p_sys, i_fd );
- if( false == b_demux)
- {
- return i_fd;
- }
-
- demux_t *p_demux = (demux_t *) p_obj;
-
/* Verify device support for the various IO methods */
switch( p_sys->io )
{
/* Use current width and height settings */
if( v4l2_ioctl( i_fd, VIDIOC_G_FMT, &fmt ) < 0 )
{
- msg_Err( p_demux, "Cannot get default width and height." );
+ msg_Err( p_obj, "Cannot get default width and height." );
goto open_failed;
}
}
else if( p_sys->i_width < 0 || p_sys->i_height < 0 )
{
- msg_Dbg( p_demux, "will try to find optimal width and height." );
+ msg_Dbg( p_obj, "will try to find optimal width and height." );
}
else
{
/* Use user specified width and height */
- msg_Dbg( p_demux, "trying specified size %dx%d", p_sys->i_width, p_sys->i_height );
+ msg_Dbg( p_obj, "trying specified size %dx%d", p_sys->i_width, p_sys->i_height );
}
fmt.fmt.pix.width = p_sys->i_width;
fmt.fmt.pix.height = p_sys->i_height;
fmt.fmt.pix.field = V4L2_FIELD_NONE;
- /* Test and set Chroma */
- fmt.fmt.pix.pixelformat = 0;
- if( p_sys->psz_requested_chroma && *p_sys->psz_requested_chroma )
+ if (b_demux)
{
- /* User specified chroma */
- const vlc_fourcc_t i_requested_fourcc =
- vlc_fourcc_GetCodecFromString( VIDEO_ES, p_sys->psz_requested_chroma );
+ demux_t *p_demux = (demux_t *) p_obj;
- for( int i = 0; v4l2chroma_to_fourcc[i].i_v4l2 != 0; i++ )
+ /* Test and set Chroma */
+ fmt.fmt.pix.pixelformat = 0;
+ if( p_sys->psz_requested_chroma && *p_sys->psz_requested_chroma )
{
- if( v4l2chroma_to_fourcc[i].i_fourcc == i_requested_fourcc )
+ /* User specified chroma */
+ const vlc_fourcc_t i_requested_fourcc =
+ vlc_fourcc_GetCodecFromString( VIDEO_ES, p_sys->psz_requested_chroma );
+
+ for( int i = 0; v4l2chroma_to_fourcc[i].i_v4l2 != 0; i++ )
{
- fmt.fmt.pix.pixelformat = v4l2chroma_to_fourcc[i].i_v4l2;
- break;
+ if( v4l2chroma_to_fourcc[i].i_fourcc == i_requested_fourcc )
+ {
+ fmt.fmt.pix.pixelformat = v4l2chroma_to_fourcc[i].i_v4l2;
+ break;
+ }
+ }
+ /* Try and set user chroma */
+ if( !IsPixelFormatSupported( p_demux, fmt.fmt.pix.pixelformat ) || ( fmt.fmt.pix.pixelformat && v4l2_ioctl( i_fd, VIDIOC_S_FMT, &fmt ) < 0 ) )
+ {
+ msg_Warn( p_demux, "Driver is unable to use specified chroma %s. Trying defaults.", p_sys->psz_requested_chroma );
+ fmt.fmt.pix.pixelformat = 0;
}
}
- /* Try and set user chroma */
- if( !IsPixelFormatSupported( p_demux, fmt.fmt.pix.pixelformat ) || ( fmt.fmt.pix.pixelformat && v4l2_ioctl( i_fd, VIDIOC_S_FMT, &fmt ) < 0 ) )
- {
- msg_Warn( p_demux, "Driver is unable to use specified chroma %s. Trying defaults.", p_sys->psz_requested_chroma );
- fmt.fmt.pix.pixelformat = 0;
- }
- }
- /* If no user specified chroma, find best */
- /* This also decides if MPEG encoder card or not */
- if( !fmt.fmt.pix.pixelformat )
- {
- unsigned int i;
- for( i = 0; i < ARRAY_SIZE( p_chroma_fallbacks ); i++ )
+ /* If no user specified chroma, find best */
+ /* This also decides if MPEG encoder card or not */
+ if( !fmt.fmt.pix.pixelformat )
{
- fmt.fmt.pix.pixelformat = p_chroma_fallbacks[i];
- if( IsPixelFormatSupported( p_demux, fmt.fmt.pix.pixelformat )
- && v4l2_ioctl( i_fd, VIDIOC_S_FMT, &fmt ) >= 0 )
- break;
- }
- if( i == ARRAY_SIZE( p_chroma_fallbacks ) )
- {
- msg_Warn( p_demux, "Could not select any of the default chromas; attempting to open as MPEG encoder card (access)" );
- goto open_failed;
+ unsigned int i;
+ for( i = 0; i < ARRAY_SIZE( p_chroma_fallbacks ); i++ )
+ {
+ fmt.fmt.pix.pixelformat = p_chroma_fallbacks[i];
+ if( IsPixelFormatSupported( p_demux, fmt.fmt.pix.pixelformat )
+ && v4l2_ioctl( i_fd, VIDIOC_S_FMT, &fmt ) >= 0 )
+ break;
+ }
+ if( i == ARRAY_SIZE( p_chroma_fallbacks ) )
+ {
+ msg_Warn( p_demux, "Could not select any of the default chromas; attempting to open as MPEG encoder card (access)" );
+ goto open_failed;
+ }
}
- }
- if( p_sys->i_width < 0 || p_sys->i_height < 0 )
- {
- if( p_sys->f_fps <= 0 )
+ if( p_sys->i_width < 0 || p_sys->i_height < 0 )
{
- p_sys->f_fps = GetAbsoluteMaxFrameRate( p_demux, i_fd,
- fmt.fmt.pix.pixelformat );
- msg_Dbg( p_demux, "Found maximum framerate of %f", p_sys->f_fps );
+ if( p_sys->f_fps <= 0 )
+ {
+ p_sys->f_fps = GetAbsoluteMaxFrameRate( p_demux, i_fd,
+ fmt.fmt.pix.pixelformat );
+ msg_Dbg( p_demux, "Found maximum framerate of %f", p_sys->f_fps );
+ }
+ GetMaxDimensions( p_demux, i_fd,
+ fmt.fmt.pix.pixelformat, p_sys->f_fps,
+ &fmt.fmt.pix.width, &fmt.fmt.pix.height );
+ msg_Dbg( p_demux, "Found optimal dimensions for framerate %f of %dx%d",
+ p_sys->f_fps, fmt.fmt.pix.width, fmt.fmt.pix.height );
+ if( v4l2_ioctl( i_fd, VIDIOC_S_FMT, &fmt ) < 0 ) {;}
}
- GetMaxDimensions( p_demux, i_fd,
- fmt.fmt.pix.pixelformat, p_sys->f_fps,
- &fmt.fmt.pix.width, &fmt.fmt.pix.height );
- msg_Dbg( p_demux, "Found optimal dimensions for framerate %f of %dx%d",
- p_sys->f_fps, fmt.fmt.pix.width, fmt.fmt.pix.height );
- if( v4l2_ioctl( i_fd, VIDIOC_S_FMT, &fmt ) < 0 ) {;}
- }
- /* Reassign width, height and chroma incase driver override */
- p_sys->i_width = fmt.fmt.pix.width;
- p_sys->i_height = fmt.fmt.pix.height;
+ /* Reassign width, height and chroma incase driver override */
+ p_sys->i_width = fmt.fmt.pix.width;
+ p_sys->i_height = fmt.fmt.pix.height;
+ }
if( v4l2_ioctl( i_fd, VIDIOC_G_FMT, &fmt ) < 0 ) {;}
/* Print extra info */
- msg_Dbg( p_demux, "Driver requires at most %d bytes to store a complete image", fmt.fmt.pix.sizeimage );
+ msg_Dbg( p_obj, "Driver requires at most %d bytes to store a complete image", fmt.fmt.pix.sizeimage );
/* Check interlacing */
switch( fmt.fmt.pix.field )
{
case V4L2_FIELD_NONE:
- msg_Dbg( p_demux, "Interlacing setting: progressive" );
+ msg_Dbg( p_obj, "Interlacing setting: progressive" );
break;
case V4L2_FIELD_TOP:
- msg_Dbg( p_demux, "Interlacing setting: top field only" );
+ msg_Dbg( p_obj, "Interlacing setting: top field only" );
break;
case V4L2_FIELD_BOTTOM:
- msg_Dbg( p_demux, "Interlacing setting: bottom field only" );
+ msg_Dbg( p_obj, "Interlacing setting: bottom field only" );
break;
case V4L2_FIELD_INTERLACED:
- msg_Dbg( p_demux, "Interlacing setting: interleaved (bottom top if M/NTSC, top bottom otherwise)" );
+ msg_Dbg( p_obj, "Interlacing setting: interleaved (bottom top if M/NTSC, top bottom otherwise)" );
break;
case V4L2_FIELD_SEQ_TB:
- msg_Dbg( p_demux, "Interlacing setting: sequential top bottom" );
+ msg_Dbg( p_obj, "Interlacing setting: sequential top bottom" );
break;
case V4L2_FIELD_SEQ_BT:
- msg_Dbg( p_demux, "Interlacing setting: sequential bottom top" );
+ msg_Dbg( p_obj, "Interlacing setting: sequential bottom top" );
break;
case V4L2_FIELD_ALTERNATE:
- msg_Dbg( p_demux, "Interlacing setting: alternate fields" );
+ msg_Dbg( p_obj, "Interlacing setting: alternate fields" );
break;
case V4L2_FIELD_INTERLACED_TB:
- msg_Dbg( p_demux, "Interlacing setting: interleaved top bottom" );
+ msg_Dbg( p_obj, "Interlacing setting: interleaved top bottom" );
break;
case V4L2_FIELD_INTERLACED_BT:
- msg_Dbg( p_demux, "Interlacing setting: interleaved bottom top" );
+ msg_Dbg( p_obj, "Interlacing setting: interleaved bottom top" );
break;
default:
- msg_Warn( p_demux, "Interlacing setting: unknown type (%d)",
+ msg_Warn( p_obj, "Interlacing setting: unknown type (%d)",
fmt.fmt.pix.field );
break;
}
if( fmt.fmt.pix.field != V4L2_FIELD_NONE )
- msg_Warn( p_demux, "Interlaced inputs haven't been tested. Please report any issue." );
+ msg_Warn( p_obj, "Interlaced inputs haven't been tested. Please report any issue." );
/* Look up final fourcc */
p_sys->i_fourcc = 0;
char psz_fourcc[5];
memset( &psz_fourcc, 0, sizeof( psz_fourcc ) );
vlc_fourcc_to_char( p_sys->i_fourcc, &psz_fourcc );
- msg_Dbg( p_demux, "supported frame intervals for %4s, %dx%d:",
+ msg_Dbg( p_obj, "supported frame intervals for %4s, %dx%d:",
psz_fourcc, frmival.width, frmival.height );
switch( frmival.type )
{
case V4L2_FRMIVAL_TYPE_DISCRETE:
do
{
- msg_Dbg( p_demux, " supported frame interval: %d/%d",
+ msg_Dbg( p_obj, " supported frame interval: %d/%d",
frmival.discrete.numerator,
frmival.discrete.denominator );
frmival.index++;
} while( v4l2_ioctl( i_fd, VIDIOC_ENUM_FRAMEINTERVALS, &frmival ) >= 0 );
break;
case V4L2_FRMIVAL_TYPE_STEPWISE:
- msg_Dbg( p_demux, " supported frame intervals: %d/%d to "
+ msg_Dbg( p_obj, " supported frame intervals: %d/%d to "
"%d/%d using %d/%d increments",
frmival.stepwise.min.numerator,
frmival.stepwise.min.denominator,
frmival.stepwise.step.denominator );
break;
case V4L2_FRMIVAL_TYPE_CONTINUOUS:
- msg_Dbg( p_demux, " supported frame intervals: %d/%d to %d/%d",
+ msg_Dbg( p_obj, " supported frame intervals: %d/%d to %d/%d",
frmival.stepwise.min.numerator,
frmival.stepwise.min.denominator,
frmival.stepwise.max.numerator,
switch( p_sys->io )
{
case IO_METHOD_READ:
- if( InitRead( p_demux, fmt.fmt.pix.sizeimage ) != VLC_SUCCESS ) goto open_failed;
+ if( InitRead( p_obj, p_sys, fmt.fmt.pix.sizeimage ) != VLC_SUCCESS ) goto open_failed;
break;
case IO_METHOD_MMAP:
- if( InitMmap( p_demux, i_fd ) != VLC_SUCCESS ) goto open_failed;
+ if( InitMmap( p_obj, p_sys, i_fd ) != VLC_SUCCESS ) goto open_failed;
break;
case IO_METHOD_USERPTR:
- if( InitUserP( p_demux, i_fd, fmt.fmt.pix.sizeimage ) != VLC_SUCCESS ) goto open_failed;
+ if( InitUserP( p_obj, p_sys, i_fd, fmt.fmt.pix.sizeimage ) != VLC_SUCCESS ) goto open_failed;
break;
}
es_fmt.video.i_height = p_sys->i_height;
es_fmt.video.i_aspect = 4 * VOUT_ASPECT_FACTOR / 3;
- msg_Dbg( p_demux, "added new video es %4.4s %dx%d",
- (char*)&es_fmt.i_codec, es_fmt.video.i_width, es_fmt.video.i_height );
- p_sys->p_es = es_out_Add( p_demux->out, &es_fmt );
+ if( b_demux )
+ {
+ demux_t *p_demux = (demux_t *) p_obj;
+ msg_Dbg( p_demux, "added new video es %4.4s %dx%d",
+ (char*)&es_fmt.i_codec, es_fmt.video.i_width, es_fmt.video.i_height );
+ p_sys->p_es = es_out_Add( p_demux->out, &es_fmt );
+ }
/* Start Capture */
if( v4l2_ioctl( i_fd, VIDIOC_QBUF, &buf ) < 0 )
{
- msg_Err( p_demux, "VIDIOC_QBUF failed" );
+ msg_Err( p_obj, "VIDIOC_QBUF failed" );
goto open_failed;
}
}
buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if( v4l2_ioctl( i_fd, VIDIOC_STREAMON, &buf_type ) < 0 )
{
- msg_Err( p_demux, "VIDIOC_STREAMON failed" );
+ msg_Err( p_obj, "VIDIOC_STREAMON failed" );
goto open_failed;
}
if( v4l2_ioctl( i_fd, VIDIOC_QBUF, &buf ) < 0 )
{
- msg_Err( p_demux, "VIDIOC_QBUF failed" );
+ msg_Err( p_obj, "VIDIOC_QBUF failed" );
goto open_failed;
}
}
buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if( v4l2_ioctl( i_fd, VIDIOC_STREAMON, &buf_type ) < 0 )
{
- msg_Err( p_demux, "VIDIOC_STREAMON failed" );
+ msg_Err( p_obj, "VIDIOC_STREAMON failed" );
goto open_failed;
}
/* report fps */
if( p_sys->f_fps >= 0.1 )
{
- msg_Dbg( p_demux, "User set fps=%f", p_sys->f_fps );
+ msg_Dbg( p_obj, "User set fps=%f", p_sys->f_fps );
}
return i_fd;
projects / vlc / commitdiff