#define ASPECT_LONGTEXT N_("Define input picture aspect-ratio to use. Default is 4:3" )
typedef enum {
+ IO_METHOD_AUTO,
IO_METHOD_READ,
IO_METHOD_MMAP,
IO_METHOD_USERPTR,
{ N_("Default"), N_("SECAM"), N_("PAL"), N_("NTSC") };
static const int i_iomethod_list[] =
- { IO_METHOD_READ, IO_METHOD_MMAP, IO_METHOD_USERPTR };
+ { IO_METHOD_AUTO, IO_METHOD_READ, IO_METHOD_MMAP, IO_METHOD_USERPTR };
static const char *const psz_iomethod_list_text[] =
- { N_("READ"), N_("MMAP"), N_("USERPTR") };
+ { N_("AUTO"), N_("READ"), N_("MMAP"), N_("USERPTR") };
static const int i_tuner_audio_modes_list[] =
{ V4L2_TUNER_MODE_MONO, V4L2_TUNER_MODE_STEREO,
true )
add_integer( CFG_PREFIX "audio-input", 0, NULL, AUDIO_INPUT_TEXT,
AUDIO_INPUT_LONGTEXT, true )
- add_integer( CFG_PREFIX "io", IO_METHOD_MMAP, NULL, IOMETHOD_TEXT,
+ add_integer( CFG_PREFIX "io", IO_METHOD_AUTO, NULL, IOMETHOD_TEXT,
IOMETHOD_LONGTEXT, true )
change_integer_list( i_iomethod_list, psz_iomethod_list_text, NULL )
add_integer( CFG_PREFIX "width", -1, NULL, WIDTH_TEXT,
static int Demux( demux_t * );
static block_t *AccessRead( access_t * );
+static ssize_t AccessReadStream( access_t * p_access, uint8_t * p_buffer, size_t i_len );
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 );
p_sys->io = IO_METHOD_USERPTR;
psz_parser += strlen( "userptr" );
}
+ else if( !strncmp( psz_parser, "auto", strlen( "auto" ) ) )
+ {
+ p_sys->io = IO_METHOD_AUTO;
+ psz_parser += strlen( "auto" );
+ }
else
{
p_sys->io = strtol( psz_parser, &psz_parser, 0 );
}
break;
+
+ default:
+ break;
}
}
free( p_sys->p_buffers[i].start );
}
break;
+
+ default:
+ break;
}
free( p_sys->p_buffers );
}
if( *p_access->psz_access == '\0' ) return VLC_EGENERIC;
access_InitFields( p_access );
- 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;
msg_Dbg( p_this, "Trying direct kernel v4l2" );
use_kernel_v4l2( p_sys );
if( FindMainDevice( p_this, p_sys, false ) == VLC_SUCCESS)
+ {
+ if( p_sys->io == IO_METHOD_READ )
+ ACCESS_SET_CALLBACKS( AccessReadStream, NULL, AccessControl, NULL );
+ else
+ ACCESS_SET_CALLBACKS( NULL, AccessRead, AccessControl, NULL );
return VLC_SUCCESS;
+ }
}
msg_Dbg( p_this, "Trying libv4l2 wrapper" );
use_libv4l2( p_sys );
#endif
if( FindMainDevice( p_this, p_sys, false ) == VLC_SUCCESS )
+ {
+ if( p_sys->io == IO_METHOD_READ )
+ ACCESS_SET_CALLBACKS( AccessReadStream, NULL, AccessControl, NULL );
+ else
+ ACCESS_SET_CALLBACKS( NULL, AccessRead, AccessControl, NULL );
return VLC_SUCCESS;
+ }
AccessClose( p_this );
return VLC_EGENERIC;
return NULL;
}
+static ssize_t AccessReadStream( access_t * p_access, uint8_t * p_buffer, size_t i_len )
+{
+ 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 );
+
+ if( i_ret < 0 )
+ {
+ msg_Err( p_access, "Polling error (%m)." );
+ return -1;
+ }
+
+ 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 )
+ {
+ p_access->info.i_pos += i_ret;
+ }
+
+ return i_ret;
+}
+
/*****************************************************************************
* Demux: Processes the audio or video frame
*****************************************************************************/
break;
+ default:
+ break;
}
/* Timestamp */
msg_Err( p_obj, "device does not support read i/o" );
goto open_failed;
}
+ msg_Dbg( p_obj, "using read i/o" );
break;
case IO_METHOD_MMAP:
msg_Err( p_obj, "device does not support streaming i/o" );
goto open_failed;
}
+ if( p_sys->io == IO_METHOD_MMAP )
+ msg_Dbg( p_obj, "using streaming i/o (mmap)" );
+ else
+ msg_Dbg( p_obj, "using streaming i/o (userptr)" );
break;
default:
{
crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
crop.c = cropcap.defrect; /* reset to default */
- if( v4l2_ioctl( i_fd, VIDIOC_S_CROP, &crop ) < 0 )
+ if( crop.c.width > 0 && crop.c.height > 0 ) /* Fix for fm tuners */
{
- switch( errno )
+ if( v4l2_ioctl( i_fd, VIDIOC_S_CROP, &crop ) < 0 )
{
- case EINVAL:
- /* Cropping not supported. */
- break;
- default:
- /* Errors ignored. */
- break;
+ switch( errno )
+ {
+ case EINVAL:
+ /* Cropping not supported. */
+ break;
+ default:
+ /* Errors ignored. */
+ break;
+ }
}
}
}
switch( p_sys->io )
{
case IO_METHOD_READ:
- if( InitRead( p_obj, p_sys, fmt.fmt.pix.sizeimage ) != VLC_SUCCESS ) goto open_failed;
+ if( b_demux )
+ if( InitRead( p_obj, p_sys, fmt.fmt.pix.sizeimage ) != VLC_SUCCESS ) goto open_failed;
break;
case IO_METHOD_MMAP:
if( InitUserP( p_obj, p_sys, i_fd, fmt.fmt.pix.sizeimage ) != VLC_SUCCESS ) goto open_failed;
break;
+ default:
+ goto open_failed;
+ break;
}
- /* Add */
- es_fmt.video.i_width = p_sys->i_width;
- es_fmt.video.i_height = p_sys->i_height;
-
- /* Get aspect-ratio */
- es_fmt.video.i_aspect = p_sys->i_aspect;
-
if( b_demux )
{
+ /* Add */
+ es_fmt.video.i_width = p_sys->i_width;
+ es_fmt.video.i_height = p_sys->i_height;
+
+ /* Get aspect-ratio */
+ es_fmt.video.i_aspect = p_sys->i_aspect;
+
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 );
}
break;
+
+ default:
+ goto open_failed;
+ break;
}
/* report fps */
msg_Dbg( p_obj, "the device has the capabilities: (%c) Video Capure, "
"(%c) Audio, "
- "(%c) Tuner",
+ "(%c) Tuner, "
+ "(%c) Radio",
( p_sys->dev_cap.capabilities & V4L2_CAP_VIDEO_CAPTURE ? 'X':' '),
( p_sys->dev_cap.capabilities & V4L2_CAP_AUDIO ? 'X':' '),
- ( p_sys->dev_cap.capabilities & V4L2_CAP_TUNER ? 'X':' ') );
+ ( p_sys->dev_cap.capabilities & V4L2_CAP_TUNER ? 'X':' '),
+ ( p_sys->dev_cap.capabilities & V4L2_CAP_RADIO ? 'X':' ') );
msg_Dbg( p_obj, "supported I/O methods are: (%c) Read/Write, "
"(%c) Streaming, "
( p_sys->dev_cap.capabilities & V4L2_CAP_STREAMING ? 'X':' ' ),
( p_sys->dev_cap.capabilities & V4L2_CAP_ASYNCIO ? 'X':' ' ) );
+ if( p_sys->io == IO_METHOD_AUTO )
+ {
+ if( p_sys->dev_cap.capabilities & V4L2_CAP_STREAMING )
+ {
+ msg_Err(p_obj, "Set p_sys->io to MMAP" );
+ p_sys->io = IO_METHOD_MMAP;
+ }
+ else if( p_sys->dev_cap.capabilities & V4L2_CAP_READWRITE )
+ {
+ msg_Err(p_obj, "Set p_sys->io to READ" );
+ p_sys->io = IO_METHOD_READ;
+ }
+ else
+ msg_Err( p_obj, "No known I/O method supported" );
+ }
+
/* Now, enumerate all the video inputs. This is useless at the moment
since we have no way to present that info to the user except with
debug messages */