From 06bf999c829eac0ad1ba6b887ae1c7c105425bc1 Mon Sep 17 00:00:00 2001
From: Antoine Cellerier <dionoea@videolan.org>
Date: Sun, 2 Dec 2007 14:04:32 +0000
Subject: [PATCH] Add v4l2-gamma control. Also print control details for
private controls.
---
modules/access/v4l2.c | 152 ++++++++++++++++++++++++++----------------
1 file changed, 95 insertions(+), 57 deletions(-)
diff --git a/modules/access/v4l2.c b/modules/access/v4l2.c
index 999404045f2a..ce3002fa5f59 100644
--- a/modules/access/v4l2.c
+++ b/modules/access/v4l2.c
@@ -74,10 +74,6 @@ static void Close( vlc_object_t * );
#define DEV_LONGTEXT N_( \
"Name of the device to use. " \
"If you don't specify anything, /dev/video0 will be used.")
-#define ADEV_TEXT N_("Audio device name")
-#define ADEV_LONGTEXT N_( \
- "Name of the audio device to use. " \
- "If you don't specify anything, /dev/dsp will be used.")
#define STANDARD_TEXT N_( "Standard" )
#define STANDARD_LONGTEXT N_( \
"Video standard (Default, SECAM, PAL, or NTSC)." )
@@ -98,6 +94,10 @@ static void Close( vlc_object_t * );
#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)." )
+
#define BRIGHTNESS_TEXT N_( "Brightness" )
#define BRIGHTNESS_LONGTEXT N_( \
"Brightness of the video input." )
@@ -110,9 +110,14 @@ static void Close( vlc_object_t * );
#define HUE_TEXT N_( "Hue" )
#define HUE_LONGTEXT N_( \
"Hue of the video input." )
-#define FPS_TEXT N_( "Framerate" )
-#define FPS_LONGTEXT N_( "Framerate to capture, if applicable " \
- "(-1 for autodetect)." )
+#define GAMMA_TEXT N_( "Gamma" )
+#define GAMMA_LONGTEXT N_( \
+ "Gamma of the video input." )
+
+#define ADEV_TEXT N_("Audio device name")
+#define ADEV_LONGTEXT N_( \
+ "Name of the audio device to use. " \
+ "If you don't specify anything, /dev/dsp will be used.")
#define ALSA_TEXT N_( "Use Alsa" )
#define ALSA_LONGTEXT N_( \
"Use ALSA instead of OSS for audio" )
@@ -122,6 +127,7 @@ static void Close( vlc_object_t * );
#define SAMPLERATE_TEXT N_( "Samplerate" )
#define SAMPLERATE_LONGTEXT N_( \
"Samplerate of the captured audio stream, in Hz (eg: 11025, 22050, 44100, 48000)" )
+
#define CACHING_TEXT N_("Caching value in ms")
#define CACHING_LONGTEXT N_( \
"Caching value for V4L2 captures. This " \
@@ -149,10 +155,9 @@ vlc_module_begin();
set_category( CAT_INPUT );
set_subcategory( SUBCAT_INPUT_ACCESS );
+ set_section( N_( "Video input" ), NULL );
add_string( "v4l2-dev", "/dev/video0", 0, DEV_TEXT, DEV_LONGTEXT,
VLC_FALSE );
- add_string( "v4l2-adev", "/dev/dsp", 0, ADEV_TEXT, ADEV_LONGTEXT,
- VLC_FALSE );
add_integer( "v4l2-standard", 0, NULL, STANDARD_TEXT, STANDARD_LONGTEXT,
VLC_FALSE );
change_integer_list( i_standards_list, psz_standards_list_text, 0 );
@@ -167,6 +172,9 @@ vlc_module_begin();
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 );
+
+ set_section( N_( "Video controls" ), NULL );
add_integer( "v4l2-brightness", -1, NULL, BRIGHTNESS_TEXT,
BRIGHTNESS_LONGTEXT, VLC_TRUE );
add_integer( "v4l2-contrast", -1, NULL, CONTRAST_TEXT,
@@ -175,7 +183,12 @@ vlc_module_begin();
SATURATION_LONGTEXT, VLC_TRUE );
add_integer( "v4l2-hue", -1, NULL, HUE_TEXT,
HUE_LONGTEXT, VLC_TRUE );
- add_float( "v4l2-fps", 0, NULL, FPS_TEXT, FPS_LONGTEXT, VLC_TRUE );
+ add_integer( "v4l2-gamma", -1, NULL, GAMMA_TEXT,
+ GAMMA_LONGTEXT, VLC_TRUE );
+
+ set_section( N_( "Audio input" ), NULL );
+ add_string( "v4l2-adev", "/dev/dsp", 0, ADEV_TEXT, ADEV_LONGTEXT,
+ VLC_FALSE );
#ifdef HAVE_ALSA
add_bool( "v4l2-alsa", VLC_FALSE, NULL, ALSA_TEXT, ALSA_LONGTEXT,
VLC_TRUE );
@@ -300,6 +313,7 @@ struct demux_sys_t
int i_contrast;
int i_saturation;
int i_hue;
+ int i_gamma;
picture_t pic;
int i_video_frame_size;
@@ -369,11 +383,14 @@ static int Open( vlc_object_t *p_this )
var_CreateGetIntegerCommand( p_demux, "v4l2-saturation" );
p_sys->i_hue =
var_CreateGetIntegerCommand( p_demux, "v4l2-hue" );
+ p_sys->i_gamma =
+ var_CreateGetIntegerCommand( p_demux, "v4l2-gamma" );
var_AddCallback( p_demux, "v4l2-brightness", VideoControlCallback, NULL );
var_AddCallback( p_demux, "v4l2-contrast", VideoControlCallback, NULL );
var_AddCallback( p_demux, "v4l2-saturation", VideoControlCallback, NULL );
var_AddCallback( p_demux, "v4l2-hue", VideoControlCallback, NULL );
+ var_AddCallback( p_demux, "v4l2-gamma", VideoControlCallback, NULL );
var_Create( p_demux, "v4l2-fps", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
var_Get( p_demux, "v4l2-fps", &val );
@@ -666,6 +683,13 @@ static void ParseMRL( demux_t *p_demux )
strtol( psz_parser + strlen( "hue=" ),
&psz_parser, 0 );
}
+ else if( !strncmp( psz_parser, "gamma=",
+ strlen( "gamma=" ) ) )
+ {
+ p_sys->i_gamma =
+ strtol( psz_parser + strlen( "gamma=" ),
+ &psz_parser, 0 );
+ }
else if( !strncmp( psz_parser, "samplerate=",
strlen( "samplerate=" ) ) )
{
@@ -1536,6 +1560,7 @@ int OpenVideoDev( demux_t *p_demux, char *psz_device )
VideoControl( p_demux, i_fd,
"saturation", V4L2_CID_SATURATION, p_sys->i_saturation );
VideoControl( p_demux, i_fd, "hue", V4L2_CID_HUE, p_sys->i_hue );
+ VideoControl( p_demux, i_fd, "gamma", V4L2_CID_GAMMA, p_sys->i_gamma );
/* Init vout Picture */
vout_InitPicture( VLC_OBJECT(p_demux), &p_sys->pic, p_sys->i_fourcc,
@@ -2282,10 +2307,59 @@ open_failed:
/*****************************************************************************
* List available controls
*****************************************************************************/
+static void VideoControlListPrint( demux_t *p_demux, int i_fd,
+ struct v4l2_queryctrl queryctrl )
+{
+ struct v4l2_querymenu querymenu;
+ if( queryctrl.flags & V4L2_CTRL_FLAG_GRABBED )
+ msg_Dbg( p_demux, " control is busy" );
+ if( queryctrl.flags & V4L2_CTRL_FLAG_READ_ONLY )
+ msg_Dbg( p_demux, " control is read-only" );
+ switch( queryctrl.type )
+ {
+ case V4L2_CTRL_TYPE_INTEGER:
+ msg_Dbg( p_demux, " integer control" );
+ msg_Dbg( p_demux,
+ " valid values: %d to %d by steps of %d",
+ queryctrl.minimum, queryctrl.maximum,
+ queryctrl.step );
+ msg_Dbg( p_demux, " default value: %d",
+ queryctrl.default_value );
+ break;
+ case V4L2_CTRL_TYPE_BOOLEAN:
+ msg_Dbg( p_demux, " boolean control" );
+ msg_Dbg( p_demux, " default value: %d",
+ queryctrl.default_value );
+ break;
+ case V4L2_CTRL_TYPE_MENU:
+ msg_Dbg( p_demux, " menu control" );
+ memset( &querymenu, 0, sizeof( querymenu ) );
+ for( querymenu.index = queryctrl.minimum;
+ querymenu.index <= (unsigned)queryctrl.maximum;
+ querymenu.index++ )
+ {
+ if( ioctl( i_fd, VIDIOC_QUERYMENU, &querymenu ) >= 0 )
+ {
+ msg_Dbg( p_demux, " %d: %s",
+ querymenu.index, querymenu.name );
+ }
+ }
+ msg_Dbg( p_demux, " default value: %d",
+ queryctrl.default_value );
+ break;
+ case V4L2_CTRL_TYPE_BUTTON:
+ msg_Dbg( p_demux, " button control" );
+ break;
+ default:
+ msg_Dbg( p_demux, " unknown control type (FIXME)" );
+ /* FIXME */
+ break;
+ }
+}
+
static int VideoControlList( demux_t *p_demux, int i_fd )
{
struct v4l2_queryctrl queryctrl;
- struct v4l2_querymenu querymenu;
memset( &queryctrl, 0, sizeof( queryctrl ) );
@@ -2300,50 +2374,7 @@ static int VideoControlList( demux_t *p_demux, int i_fd )
continue;
msg_Dbg( p_demux, "Available control: %s (%x)",
queryctrl.name, queryctrl.id );
- if( queryctrl.flags & V4L2_CTRL_FLAG_GRABBED )
- msg_Dbg( p_demux, " control is busy" );
- if( queryctrl.flags & V4L2_CTRL_FLAG_READ_ONLY )
- msg_Dbg( p_demux, " control is read-only" );
- switch( queryctrl.type )
- {
- case V4L2_CTRL_TYPE_INTEGER:
- msg_Dbg( p_demux, " integer control" );
- msg_Dbg( p_demux,
- " valid values: %d to %d by steps of %d",
- queryctrl.minimum, queryctrl.maximum,
- queryctrl.step );
- msg_Dbg( p_demux, " default value: %d",
- queryctrl.default_value );
- break;
- case V4L2_CTRL_TYPE_BOOLEAN:
- msg_Dbg( p_demux, " boolean control" );
- msg_Dbg( p_demux, " default value: %d",
- queryctrl.default_value );
- break;
- case V4L2_CTRL_TYPE_MENU:
- msg_Dbg( p_demux, " menu control" );
- memset( &querymenu, 0, sizeof( querymenu ) );
- for( querymenu.index = queryctrl.minimum;
- querymenu.index <= (unsigned)queryctrl.maximum;
- querymenu.index++ )
- {
- if( ioctl( i_fd, VIDIOC_QUERYMENU, &querymenu ) >= 0 )
- {
- msg_Dbg( p_demux, " %d: %s",
- querymenu.index, querymenu.name );
- }
- }
- msg_Dbg( p_demux, " default value: %d",
- queryctrl.default_value );
- break;
- case V4L2_CTRL_TYPE_BUTTON:
- msg_Dbg( p_demux, " button control" );
- break;
- default:
- msg_Dbg( p_demux, " unknown control type (FIXME)" );
- /* FIXME */
- break;
- }
+ VideoControlListPrint( p_demux, i_fd, queryctrl );
}
}
@@ -2356,8 +2387,9 @@ static int VideoControlList( demux_t *p_demux, int i_fd )
{
if( queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
continue;
- msg_Dbg( p_demux, "Available private control: %s",
- queryctrl.name );
+ msg_Dbg( p_demux, "Available private control: %s (%x)",
+ queryctrl.name, queryctrl.id );
+ VideoControlListPrint( p_demux, i_fd, queryctrl );
}
else
break;
@@ -2447,6 +2479,12 @@ static int VideoControlCallback( vlc_object_t *p_this,
return VideoControl( p_demux, i_fd,
"hue", V4L2_CID_HUE, p_sys->i_hue );
}
+ else if( !strcmp( psz_var, "v4l2-gamma" ) )
+ {
+ p_sys->i_gamma = newval.i_int;
+ return VideoControl( p_demux, i_fd,
+ "gamma", V4L2_CID_HUE, p_sys->i_gamma );
+ }
return VLC_EGENERIC;
}
--
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