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Patch by Richard Hosking: Allow users specified width and height of v4l2 source.

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This commit is contained in:
Jean-Paul Saman 2007-11-20 08:30:30 +00:00
parent 0d38084be8
commit 78a05dbc4c
1 changed files with 36 additions and 5 deletions
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41
modules/access/v4l2.c
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@ -81,6 +81,12 @@ static void Close( vlc_object_t * );
#define IOMETHOD_TEXT N_( "IO Method" )
#define IOMETHOD_LONGTEXT N_( \
"IO Method (READ, MMAP, USERPTR)." )
#define WIDTH_TEXT N_( "Width" )
#define WIDTH_LONGTEXT N_( \
"Force width (-1 for autodetect)." )
#define HEIGHT_TEXT N_( "Height" )
#define HEIGHT_LONGTEXT N_( \
"Force height (-1 for autodetect)." )
#define FPS_TEXT N_( "Framerate" )
#define FPS_LONGTEXT N_( "Framerate to capture, if applicable " \
"(-1 for autodetect)." )
@ -129,8 +135,12 @@ vlc_module_begin();
add_integer( "v4l2-input", 0, NULL, INPUT_TEXT, INPUT_LONGTEXT,
VLC_TRUE );
add_integer( "v4l2-io", IO_METHOD_MMAP, NULL, IOMETHOD_TEXT,
IOMETHOD_LONGTEXT, VLC_FALSE );
IOMETHOD_LONGTEXT, VLC_TRUE );
change_integer_list( i_iomethod_list, psz_iomethod_list_text, 0 );
add_integer( "v4l2-width", 0, NULL, WIDTH_TEXT,
WIDTH_LONGTEXT, VLC_TRUE );
add_integer( "v4l2-height", 0, NULL, HEIGHT_TEXT,
HEIGHT_LONGTEXT, VLC_TRUE );
add_float( "v4l2-fps", 0, NULL, FPS_TEXT, FPS_LONGTEXT, VLC_TRUE );
add_bool( "v4l2-stereo", VLC_TRUE, NULL, STEREO_TEXT, STEREO_LONGTEXT,
VLC_TRUE );
@ -289,6 +299,9 @@ static int Open( vlc_object_t *p_this )
p_sys->io = var_CreateGetInteger( p_demux, "v4l2-io" );
p_sys->i_width = var_CreateGetInteger( p_demux, "v4l2-width" );
p_sys->i_height = var_CreateGetInteger( p_demux, "v4l2-height" );
var_Create( p_demux, "v4l2-fps", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
var_Get( p_demux, "v4l2-fps", &val );
p_sys->f_fps = val.f_float;
@ -527,6 +540,20 @@ static void ParseMRL( demux_t *p_demux )
p_sys->io = strtol( psz_parser, &psz_parser, 0 );
}
}
else if( !strncmp( psz_parser, "width=",
strlen( "width=" ) ) )
{
p_sys->i_width =
strtol( psz_parser + strlen( "width=" ),
&psz_parser, 0 );
}
else if( !strncmp( psz_parser, "height=",
strlen( "height=" ) ) )
{
p_sys->i_height =
strtol( psz_parser + strlen( "height=" ),
&psz_parser, 0 );
}
else if( !strncmp( psz_parser, "samplerate=",
strlen( "samplerate=" ) ) )
{
@ -1185,11 +1212,11 @@ int OpenVideoDev( demux_t *p_demux, char *psz_device )
}
/* Try and find default resolution if not specified */
if( !p_sys->i_width && !p_sys->i_height )
{
memset( &fmt, 0, sizeof(fmt) );
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
memset( &fmt, 0, sizeof(fmt) );
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if( p_sys->i_width <= 0 || p_sys->i_height <= 0 )
{
if( ioctl( i_fd, VIDIOC_G_FMT, &fmt ) < 0 )
{
msg_Err( p_demux, "Cannot get default width and height." );
@ -1204,6 +1231,10 @@ int OpenVideoDev( demux_t *p_demux, char *psz_device )
p_sys->i_height = p_sys->i_height * 2;
}
}
else
{
msg_Dbg( p_demux, "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;