Skip to content

V
vlc
Commit 2d40161c authored by Antoine Cellerier's avatar Antoine Cellerier
Browse files
Options

Add option to reset controls to their default value at runtime. Add... 

Add option to reset controls to their default value at runtime. Add "controls-update" variable which is triggered if any of the controls value is changed. Add some comments and change some function names.
parent fbe32b99
Hide whitespace changes
Inline Side-by-side
Showing with 133 additions and 33 deletions
modules/access/v4l2.c
View file @ 2d40161c
......@@ -34,7 +34,6 @@
*/
/*
* TODO: No mjpeg support yet.
* TODO: Tuner partial implementation.
* TODO: Alsa input support - experimental
*/
......@@ -183,7 +182,7 @@ vlc_module_begin();
add_float( CFG_PREFIX "fps", 0, NULL, FPS_TEXT, FPS_LONGTEXT, VLC_TRUE );
set_section( N_( "Video controls" ), NULL );
add_bool( CFG_PREFIX "control-reset", VLC_FALSE, NULL, CTRL_RESET_TEXT,
add_bool( CFG_PREFIX "controls-reset", VLC_FALSE, NULL, CTRL_RESET_TEXT,
CTRL_RESET_LONGTEXT, VLC_TRUE );
add_integer( CFG_PREFIX "brightness", -1, NULL, BRIGHTNESS_TEXT,
BRIGHTNESS_LONGTEXT, VLC_TRUE );
......@@ -221,7 +220,7 @@ vlc_module_end();
static void ParseMRL( demux_t * );
static int Control( demux_t *, int, va_list );
static int DemuxControl( demux_t *, int, va_list );
static int Demux( demux_t * );
static block_t* GrabVideo( demux_t *p_demux );
......@@ -236,10 +235,13 @@ static int OpenAudioDev( demux_t *, char *psz_device );
static vlc_bool_t ProbeVideoDev( demux_t *, char *psz_device );
static vlc_bool_t ProbeAudioDev( demux_t *, char *psz_device );
static int VideoControlList( demux_t *p_demux, int i_fd, vlc_bool_t b_reset );
static int VideoControl( demux_t *, int i_fd,
const char *psz_name, int i_cid, int i_value );
static int VideoControlCallback( vlc_object_t *p_this,
static int ControlList( demux_t *p_demux, int i_fd, vlc_bool_t b_reset );
static int Control( demux_t *, int i_fd,
const char *psz_name, int i_cid, int i_value );
static int ControlCallback( vlc_object_t *p_this,
const char *psz_var, vlc_value_t oldval, vlc_value_t newval,
void *p_data );
static int ControlResetCallback( vlc_object_t *p_this,
const char *psz_var, vlc_value_t oldval, vlc_value_t newval,
void *p_data );
......@@ -394,7 +396,7 @@ static int Open( vlc_object_t *p_this )
if( *p_demux->psz_access == '\0' ) return VLC_EGENERIC;
/* Set up p_demux */
p_demux->pf_control = Control;
p_demux->pf_control = DemuxControl;
p_demux->pf_demux = Demux;
p_demux->info.i_update = 0;
p_demux->info.i_title = 0;
......@@ -416,7 +418,7 @@ static int Open( vlc_object_t *p_this )
p_sys->i_width = var_CreateGetInteger( p_demux, "v4l2-width" );
p_sys->i_height = var_CreateGetInteger( p_demux, "v4l2-height" );
var_CreateGetBool( p_demux, "v4l2-control-reset" );
var_CreateGetBool( p_demux, "v4l2-controls-reset" );
var_Create( p_demux, "v4l2-fps", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
var_Get( p_demux, "v4l2-fps", &val );
......@@ -681,11 +683,11 @@ static void ParseMRL( demux_t *p_demux )
strtol( psz_parser + strlen( "height=" ),
&psz_parser, 0 );
}
else if( !strncmp( psz_parser, "control-reset",
strlen( "control-reset" ) ) )
else if( !strncmp( psz_parser, "controls-reset",
strlen( "controls-reset" ) ) )
{
var_SetBool( p_demux, "v4l2-control-reset", VLC_TRUE );
psz_parser += strlen( "control-reset" );
var_SetBool( p_demux, "v4l2-controls-reset", VLC_TRUE );
psz_parser += strlen( "controls-reset" );
}
#if 0
else if( !strncmp( psz_parser, "brightness=",
......@@ -874,9 +876,9 @@ static void Close( vlc_object_t *p_this )
}
/*****************************************************************************
* Control:
* DemuxControl:
*****************************************************************************/
static int Control( demux_t *p_demux, int i_query, va_list args )
static int DemuxControl( demux_t *p_demux, int i_query, va_list args )
{
demux_sys_t *p_sys = p_demux->p_sys;
vlc_bool_t *pb;
......@@ -1365,7 +1367,6 @@ int OpenVideoDev( demux_t *p_demux, char *psz_device )
struct v4l2_format fmt;
unsigned int i_min;
enum v4l2_buf_type buf_type;
int i;
if( ( i_fd = open( psz_device, O_RDWR ) ) < 0 )
{
......@@ -1590,8 +1591,8 @@ int OpenVideoDev( demux_t *p_demux, char *psz_device )
}
#endif
VideoControlList( p_demux, i_fd,
var_GetBool( p_demux, "v4l2-control-reset" ) );
ControlList( p_demux, i_fd,
var_GetBool( p_demux, "v4l2-controls-reset" ) );
/* Init IO method */
switch( p_sys->io )
......@@ -2325,11 +2326,12 @@ open_failed:
}
/*****************************************************************************
* List available controls
* Print a user-class v4l2 control's details, create the relevant variable,
* change the value if needed.
*****************************************************************************/
static void VideoControlListPrint( demux_t *p_demux, int i_fd,
struct v4l2_queryctrl queryctrl,
vlc_bool_t b_reset )
static void ControlListPrint( demux_t *p_demux, int i_fd,
struct v4l2_queryctrl queryctrl,
vlc_bool_t b_reset )
{
struct v4l2_querymenu querymenu;
unsigned int i_mid;
......@@ -2446,13 +2448,13 @@ static void VideoControlListPrint( demux_t *p_demux, int i_fd,
if( b_reset && queryctrl.default_value != control.value )
{
msg_Dbg( p_demux, " reset value to default" );
VideoControl( p_demux, i_fd, psz_name,
Control( p_demux, i_fd, psz_name,
queryctrl.id, queryctrl.default_value );
}
}
else
{
VideoControl( p_demux, i_fd, psz_name,
Control( p_demux, i_fd, psz_name,
queryctrl.id, i_val );
}
}
......@@ -2484,12 +2486,16 @@ static void VideoControlListPrint( demux_t *p_demux, int i_fd,
}
var_AddCallback( p_demux, psz_name,
VideoControlCallback, (void*)queryctrl.id );
ControlCallback, (void*)queryctrl.id );
free( psz_name );
}
static int VideoControlList( demux_t *p_demux, int i_fd, vlc_bool_t b_reset )
/*****************************************************************************
* List all user-class v4l2 controls, set them to the user specified
* value and create the relevant variables to enable runtime changes
*****************************************************************************/
static int ControlList( demux_t *p_demux, int i_fd, vlc_bool_t b_reset )
{
struct v4l2_queryctrl queryctrl;
int i_cid;
......@@ -2501,6 +2507,18 @@ static int VideoControlList( demux_t *p_demux, int i_fd, vlc_bool_t b_reset )
* to use those to create an appropriate interface */
var_Create( p_demux, "controls", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
var_Create( p_demux, "controls-update", VLC_VAR_VOID | VLC_VAR_ISCOMMAND );
/* Add a control to reset all controls to their default values */
vlc_value_t val, val2;
var_Create( p_demux, "controls-reset", VLC_VAR_VOID | VLC_VAR_ISCOMMAND );
val.psz_string = _( "Reset controls to default" );
var_Change( p_demux, "controls-reset", VLC_VAR_SETTEXT, &val, NULL );
val.i_int = -1;
val2.psz_string = (char *)"controls-reset";
var_Change( p_demux, "controls", VLC_VAR_ADDCHOICE, &val, &val2 );
var_AddCallback( p_demux, "controls-reset", ControlResetCallback, NULL );
/* List public controls */
for( i_cid = V4L2_CID_BASE;
i_cid < V4L2_CID_LASTP1;
......@@ -2513,7 +2531,7 @@ static int VideoControlList( demux_t *p_demux, int i_fd, vlc_bool_t b_reset )
continue;
msg_Dbg( p_demux, "Available control: %s (%x)",
queryctrl.name, queryctrl.id );
VideoControlListPrint( p_demux, i_fd, queryctrl, b_reset );
ControlListPrint( p_demux, i_fd, queryctrl, b_reset );
}
}
......@@ -2529,7 +2547,70 @@ static int VideoControlList( demux_t *p_demux, int i_fd, vlc_bool_t b_reset )
continue;
msg_Dbg( p_demux, "Available private control: %s (%x)",
queryctrl.name, queryctrl.id );
VideoControlListPrint( p_demux, i_fd, queryctrl, b_reset );
ControlListPrint( p_demux, i_fd, queryctrl, b_reset );
}
else
break;
}
return VLC_SUCCESS;
}
/*****************************************************************************
* Reset all user-class v4l2 controls to their default value
*****************************************************************************/
static int ControlReset( demux_t *p_demux, int i_fd )
{
struct v4l2_queryctrl queryctrl;
int i_cid;
memset( &queryctrl, 0, sizeof( queryctrl ) );
/* public controls */
for( i_cid = V4L2_CID_BASE;
i_cid < V4L2_CID_LASTP1;
i_cid ++ )
{
queryctrl.id = i_cid;
if( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
{
struct v4l2_control control;
if( queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
continue;
memset( &control, 0, sizeof( control ) );
control.id = queryctrl.id;
if( ioctl( i_fd, VIDIOC_G_CTRL, &control ) >= 0
&& queryctrl.default_value != control.value )
{
int i;
for( i = 0; controls[i].psz_name != NULL; i++ )
if( controls[i].i_cid == queryctrl.id ) break;
Control( p_demux, i_fd,
controls[i].psz_name ? controls[i].psz_name
: (const char *)queryctrl.name,
queryctrl.id, queryctrl.default_value );
}
}
}
/* private controls */
for( i_cid = V4L2_CID_PRIVATE_BASE;
;
i_cid ++ )
{
queryctrl.id = i_cid;
if( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
{
struct v4l2_control control;
if( queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
continue;
memset( &control, 0, sizeof( control ) );
control.id = queryctrl.id;
if( ioctl( i_fd, VIDIOC_G_CTRL, &control ) >= 0
&& queryctrl.default_value != control.value )
{
Control( p_demux, i_fd, (const char *)queryctrl.name,
queryctrl.id, queryctrl.default_value );
}
}
else
break;
......@@ -2538,10 +2619,10 @@ static int VideoControlList( demux_t *p_demux, int i_fd, vlc_bool_t b_reset )
}
/*****************************************************************************
* Issue video controls
* Issue user-class v4l2 controls
*****************************************************************************/
static int VideoControl( demux_t *p_demux, int i_fd,
const char *psz_name, int i_cid, int i_value )
static int Control( demux_t *p_demux, int i_fd,
const char *psz_name, int i_cid, int i_value )
{
struct v4l2_queryctrl queryctrl;
struct v4l2_control control;
......@@ -2583,10 +2664,12 @@ static int VideoControl( demux_t *p_demux, int i_fd,
case VLC_VAR_BOOL:
val.b_bool = control.value;
var_Change( p_demux, psz_name, VLC_VAR_SETVALUE, &val, NULL );
var_SetVoid( p_demux, "controls-update" );
break;
case VLC_VAR_INTEGER:
val.i_int = control.value;
var_Change( p_demux, psz_name, VLC_VAR_SETVALUE, &val, NULL );
var_SetVoid( p_demux, "controls-update" );
break;
}
}
......@@ -2596,7 +2679,7 @@ static int VideoControl( demux_t *p_demux, int i_fd,
/*****************************************************************************
* On the fly change settings callback
*****************************************************************************/
static int VideoControlCallback( vlc_object_t *p_this,
static int ControlCallback( vlc_object_t *p_this,
const char *psz_var, vlc_value_t oldval, vlc_value_t newval,
void *p_data )
{
......@@ -2609,7 +2692,24 @@ static int VideoControlCallback( vlc_object_t *p_this,
if( i_fd < 0 )
return VLC_EGENERIC;
VideoControl( p_demux, i_fd, psz_var, i_cid, newval.i_int );
Control( p_demux, i_fd, psz_var, i_cid, newval.i_int );
return VLC_EGENERIC;
}
static int ControlResetCallback( vlc_object_t *p_this,
const char *psz_var, vlc_value_t oldval, vlc_value_t newval,
void *p_data )
{
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys = p_demux->p_sys;
int i_fd = p_sys->i_fd_video;
if( i_fd < 0 )
return VLC_EGENERIC;
ControlReset( p_demux, i_fd );
return VLC_EGENERIC;
}
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment