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vlc/modules/video_filter/logo.c
Rémi Denis-Courmont 27d483e9ef Include vlc_plugin.h as needed
2008-05-08 19:20:21 +03:00

956 lines
34 KiB
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/*****************************************************************************
* logo.c : logo video plugin for vlc
*****************************************************************************
* Copyright (C) 2003-2006 the VideoLAN team
* $Id$
*
* Authors: Gildas Bazin <gbazin@videolan.org>
* Simon Latapie <garf@videolan.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc/vlc.h>
#include <vlc_plugin.h>
#include <vlc_vout.h>
#include "vlc_filter.h"
#include "filter_common.h"
#include "vlc_image.h"
#include "vlc_osd.h"
#ifdef LoadImage
# undef LoadImage
#endif
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int Create ( vlc_object_t * );
static void Destroy ( vlc_object_t * );
static int Init ( vout_thread_t * );
static void End ( vout_thread_t * );
static void Render ( vout_thread_t *, picture_t * );
static int SendEvents( vlc_object_t *, char const *,
vlc_value_t, vlc_value_t, void * );
static int MouseEvent( vlc_object_t *, char const *,
vlc_value_t , vlc_value_t , void * );
static int Control ( vout_thread_t *, int, va_list );
static int CreateFilter ( vlc_object_t * );
static void DestroyFilter( vlc_object_t * );
static int LogoCallback( vlc_object_t *, char const *,
vlc_value_t, vlc_value_t, void * );
/*****************************************************************************
* Module descriptor
*****************************************************************************/
#define FILE_TEXT N_("Logo filenames")
#define FILE_LONGTEXT N_("Full path of the image files to use. Format is " \
"<image>[,<delay in ms>[,<alpha>]][;<image>[,<delay>[,<alpha>]]][;...]. " \
"If you only have one file, simply enter its filename.")
#define REPEAT_TEXT N_("Logo animation # of loops")
#define REPEAT_LONGTEXT N_("Number of loops for the logo animation." \
"-1 = continuous, 0 = disabled")
#define DELAY_TEXT N_("Logo individual image time in ms")
#define DELAY_LONGTEXT N_("Individual image display time of 0 - 60000 ms.")
#define POSX_TEXT N_("X coordinate")
#define POSX_LONGTEXT N_("X coordinate of the logo. You can move the logo " \
"by left-clicking it." )
#define POSY_TEXT N_("Y coordinate")
#define POSY_LONGTEXT N_("Y coordinate of the logo. You can move the logo " \
"by left-clicking it." )
#define TRANS_TEXT N_("Transparency of the logo")
#define TRANS_LONGTEXT N_("Logo transparency value " \
"(from 0 for full transparency to 255 for full opacity)." )
#define POS_TEXT N_("Logo position")
#define POS_LONGTEXT N_( \
"Enforce the logo position on the video " \
"(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
"also use combinations of these values, eg 6 = top-right).")
#define CFG_PREFIX "logo-"
static int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
static const char *ppsz_pos_descriptions[] =
{ N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
vlc_module_begin();
set_description( _("Logo video filter") );
set_capability( "video filter", 0 );
set_shortname( _("Logo overlay") );
set_category( CAT_VIDEO );
set_subcategory( SUBCAT_VIDEO_SUBPIC );
add_shortcut( "logo" );
set_callbacks( Create, Destroy );
add_file( CFG_PREFIX "file", NULL, NULL, FILE_TEXT, FILE_LONGTEXT, false );
add_integer( CFG_PREFIX "x", 0, NULL, POSX_TEXT, POSX_LONGTEXT, true );
add_integer( CFG_PREFIX "y", 0, NULL, POSY_TEXT, POSY_LONGTEXT, true );
/* default to 1000 ms per image, continuously cycle through them */
add_integer( CFG_PREFIX "delay", 1000, NULL, DELAY_TEXT, DELAY_LONGTEXT, true );
add_integer( CFG_PREFIX "repeat", -1, NULL, REPEAT_TEXT, REPEAT_LONGTEXT, true );
add_integer_with_range( CFG_PREFIX "transparency", 255, 0, 255, NULL,
TRANS_TEXT, TRANS_LONGTEXT, false );
add_integer( CFG_PREFIX "position", -1, NULL, POS_TEXT, POS_LONGTEXT, false );
change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
/* subpicture filter submodule */
add_submodule();
set_capability( "sub filter", 0 );
set_callbacks( CreateFilter, DestroyFilter );
set_description( _("Logo sub filter") );
vlc_module_end();
static const char *ppsz_filter_options[] = {
"file", "x", "y", "delay", "repeat", "transparency", "position", NULL
};
/*****************************************************************************
* Structure to hold the set of individual logo image names, times,
* transparencies
****************************************************************************/
typedef struct
{
char *psz_file; /* candidate for deletion -- not needed */
int i_delay; /* -1 means use default delay */
int i_alpha; /* -1 means use default alpha */
picture_t *p_pic;
} logo_t;
/*****************************************************************************
* Logo list structure. Common to both the vout and sub picture filter
****************************************************************************/
typedef struct
{
logo_t *p_logo; /* the parsing's result */
unsigned int i_count; /* the number of logo images to be displayed */
int i_repeat; /* how often to repeat the images, image time in ms */
mtime_t i_next_pic; /* when to bring up a new logo image */
unsigned int i_counter; /* index into the list of logo images */
int i_delay; /* default delay (0 - 60000 ms) */
int i_alpha; /* default alpha */
char *psz_filename; /* --logo-file string ( is it really useful
* to store it ? ) */
vlc_mutex_t lock;
} logo_list_t;
/*****************************************************************************
* LoadImage: loads the logo image into memory
*****************************************************************************/
static picture_t *LoadImage( vlc_object_t *p_this, char *psz_filename )
{
picture_t *p_pic;
image_handler_t *p_image;
video_format_t fmt_in;
video_format_t fmt_out;
memset( &fmt_in, 0, sizeof(video_format_t) );
memset( &fmt_out, 0, sizeof(video_format_t) );
fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
p_image = image_HandlerCreate( p_this );
p_pic = image_ReadUrl( p_image, psz_filename, &fmt_in, &fmt_out );
image_HandlerDelete( p_image );
return p_pic;
}
/*****************************************************************************
* LoadLogoList: loads the logo images into memory
*****************************************************************************
* Read the logo-file input switch, obtaining a list of images and associated
* durations and transparencies. Store the image(s), and times. An image
* without a stated time or transparency will use the logo-delay and
* logo-transparency values.
*****************************************************************************/
#define LoadLogoList( a, b ) __LoadLogoList( VLC_OBJECT( a ), b )
static void __LoadLogoList( vlc_object_t *p_this, logo_list_t *p_logo_list )
{
char *psz_list; /* the list: <logo>[,[<delay>[,[<alpha>]]]][;...] */
unsigned int i;
logo_t *p_logo; /* the parsing's result */
p_logo_list->i_counter = 0;
p_logo_list->i_next_pic = 0;
psz_list = strdup( p_logo_list->psz_filename );
/* Count the number logos == number of ';' + 1 */
p_logo_list->i_count = 1;
for( i = 0; i < strlen( psz_list ); i++ )
{
if( psz_list[i] == ';' ) p_logo_list->i_count++;
}
p_logo_list->p_logo = p_logo =
(logo_t *)malloc( p_logo_list->i_count * sizeof(logo_t) );
/* Fill the data */
for( i = 0; i < p_logo_list->i_count; i++ )
{
char *p_c;
char *p_c2;
p_c = strchr( psz_list, ';' );
p_c2 = strchr( psz_list, ',' );
p_logo[i].i_alpha = -1; /* use default settings */
p_logo[i].i_delay = -1; /* use default settings */
if( p_c2 && ( p_c2 < p_c || !p_c ) )
{
/* <logo>,<delay>[,<alpha>] type */
if( p_c2[1] != ',' && p_c2[1] != ';' && p_c2[1] != '\0' )
p_logo[i].i_delay = atoi( p_c2+1 );
*p_c2 = '\0';
if( ( p_c2 = strchr( p_c2+1, ',' ) )
&& ( p_c2 < p_c || !p_c ) && p_c2[1] != ';' && p_c2[1] != '\0' )
p_logo[i].i_alpha = atoi( p_c2 + 1 );
}
else
{
/* <logo> type */
if( p_c ) *p_c = '\0';
}
p_logo[i].psz_file = strdup( psz_list );
p_logo[i].p_pic = LoadImage( p_this, p_logo[i].psz_file );
if( !p_logo[i].p_pic )
{
msg_Warn( p_this, "error while loading logo %s, will be skipped",
p_logo[i].psz_file );
}
if( p_c ) psz_list = p_c + 1;
}
for( i = 0; i < p_logo_list->i_count; i++ )
{
msg_Dbg( p_this, "logo file name %s, delay %d, alpha %d",
p_logo[i].psz_file, p_logo[i].i_delay, p_logo[i].i_alpha );
}
/* initialize so that on the first update it will wrap back to 0 */
p_logo_list->i_counter = p_logo_list->i_count;
}
/*****************************************************************************
* FreeLogoList
*****************************************************************************/
static void FreeLogoList( logo_list_t *p_logo_list )
{
unsigned int i;
FREENULL( p_logo_list->psz_filename );
for( i = 0; i < p_logo_list->i_count; i++ )
{
logo_t *p_logo = &p_logo_list->p_logo[i];
FREENULL( p_logo->psz_file );
if( p_logo->p_pic )
{
p_logo->p_pic->pf_release( p_logo->p_pic );
p_logo->p_pic = NULL;
}
}
}
/*****************************************************************************
* vout_sys_t: logo video output method descriptor
*****************************************************************************
* This structure is part of the video output thread descriptor.
* It describes the Invert specific properties of an output thread.
*****************************************************************************/
struct vout_sys_t
{
logo_list_t *p_logo_list;
vout_thread_t *p_vout;
filter_t *p_blend;
int i_width, i_height;
int pos, posx, posy;
};
/*****************************************************************************
* Create: allocates logo video thread output method
*****************************************************************************/
static int Create( vlc_object_t *p_this )
{
vout_thread_t *p_vout = (vout_thread_t *)p_this;
vout_sys_t *p_sys;
logo_list_t *p_logo_list;
/* Allocate structure */
p_sys = p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
if( p_sys == NULL )
{
msg_Err( p_vout, "out of memory" );
return VLC_ENOMEM;
}
p_logo_list = p_sys->p_logo_list = malloc( sizeof( logo_list_t ) );
if( p_logo_list == NULL )
{
msg_Err( p_vout, "out of memory" );
free( p_sys );
return VLC_ENOMEM;
}
config_ChainParse( p_vout, CFG_PREFIX, ppsz_filter_options,
p_vout->p_cfg );
p_logo_list->psz_filename = var_CreateGetStringCommand( p_vout,
"logo-file" );
if( !p_logo_list->psz_filename || !*p_logo_list->psz_filename )
{
msg_Err( p_vout, "logo file not specified" );
return VLC_EGENERIC;
}
p_vout->pf_init = Init;
p_vout->pf_end = End;
p_vout->pf_manage = NULL;
p_vout->pf_render = Render;
p_vout->pf_display = NULL;
p_vout->pf_control = Control;
p_sys->pos = var_CreateGetIntegerCommand( p_vout, "logo-position" );
p_sys->posx = var_CreateGetIntegerCommand( p_vout, "logo-x" );
p_sys->posy = var_CreateGetIntegerCommand( p_vout, "logo-y" );
p_logo_list->i_delay = __MAX( __MIN(
var_CreateGetIntegerCommand( p_vout, "logo-delay" ) , 60000 ), 0 );
p_logo_list->i_repeat = var_CreateGetIntegerCommand( p_vout, "logo-repeat");
p_logo_list->i_alpha = __MAX( __MIN(
var_CreateGetIntegerCommand( p_vout, "logo-transparency" ), 255 ), 0 );
LoadLogoList( p_vout, p_logo_list );
return VLC_SUCCESS;
}
/*****************************************************************************
* Init: initialize logo video thread output method
*****************************************************************************/
static int Init( vout_thread_t *p_vout )
{
vout_sys_t *p_sys = p_vout->p_sys;
picture_t *p_pic;
int i_index;
video_format_t fmt;
logo_list_t *p_logo_list = p_sys->p_logo_list;
I_OUTPUTPICTURES = 0;
memset( &fmt, 0, sizeof(video_format_t) );
/* adjust index to the next logo */
p_logo_list->i_counter =
( p_logo_list->i_counter + 1 )%p_logo_list->i_count;
p_pic = p_logo_list->p_logo[p_logo_list->i_counter].p_pic;
/* Initialize the output structure */
p_vout->output.i_chroma = p_vout->render.i_chroma;
p_vout->output.i_width = p_vout->render.i_width;
p_vout->output.i_height = p_vout->render.i_height;
p_vout->output.i_aspect = p_vout->render.i_aspect;
p_vout->fmt_out = p_vout->fmt_in;
fmt = p_vout->fmt_out;
/* Load the video blending filter */
p_sys->p_blend = vlc_object_create( p_vout, sizeof(filter_t) );
vlc_object_attach( p_sys->p_blend, p_vout );
p_sys->p_blend->fmt_out.video.i_x_offset =
p_sys->p_blend->fmt_out.video.i_y_offset = 0;
p_sys->p_blend->fmt_in.video.i_x_offset =
p_sys->p_blend->fmt_in.video.i_y_offset = 0;
p_sys->p_blend->fmt_out.video.i_aspect = p_vout->render.i_aspect;
p_sys->p_blend->fmt_out.video.i_chroma = p_vout->output.i_chroma;
p_sys->p_blend->fmt_in.video.i_chroma = VLC_FOURCC('Y','U','V','A');
p_sys->p_blend->fmt_in.video.i_aspect = VOUT_ASPECT_FACTOR;
p_sys->i_width =
p_sys->p_blend->fmt_in.video.i_width =
p_sys->p_blend->fmt_in.video.i_visible_width =
p_pic ? p_pic->p[Y_PLANE].i_visible_pitch : 0;
p_sys->i_height =
p_sys->p_blend->fmt_in.video.i_height =
p_sys->p_blend->fmt_in.video.i_visible_height =
p_pic ? p_pic->p[Y_PLANE].i_visible_lines : 0;
p_sys->p_blend->fmt_out.video.i_width =
p_sys->p_blend->fmt_out.video.i_visible_width =
p_vout->output.i_width;
p_sys->p_blend->fmt_out.video.i_height =
p_sys->p_blend->fmt_out.video.i_visible_height =
p_vout->output.i_height;
p_sys->p_blend->p_module =
module_Need( p_sys->p_blend, "video blending", 0, 0 );
if( !p_sys->p_blend->p_module )
{
msg_Err( p_vout, "can't open blending filter, aborting" );
vlc_object_detach( p_sys->p_blend );
vlc_object_release( p_sys->p_blend );
return VLC_EGENERIC;
}
if( p_sys->posx < 0 || p_sys->posy < 0 )
{
p_sys->posx = 0; p_sys->posy = 0;
if( p_sys->pos & SUBPICTURE_ALIGN_BOTTOM )
{
p_sys->posy = p_vout->render.i_height - p_sys->i_height;
}
else if ( !(p_sys->pos & SUBPICTURE_ALIGN_TOP) )
{
p_sys->posy = p_vout->render.i_height / 2 - p_sys->i_height / 2;
}
if( p_sys->pos & SUBPICTURE_ALIGN_RIGHT )
{
p_sys->posx = p_vout->render.i_width - p_sys->i_width;
}
else if ( !(p_sys->pos & SUBPICTURE_ALIGN_LEFT) )
{
p_sys->posx = p_vout->render.i_width / 2 - p_sys->i_width / 2;
}
}
else
{
p_sys->pos = 0;
}
/* Try to open the real video output */
msg_Dbg( p_vout, "spawning the real video output" );
p_sys->p_vout = vout_Create( p_vout, &fmt );
/* Everything failed */
if( p_sys->p_vout == NULL )
{
msg_Err( p_vout, "can't open vout, aborting" );
return VLC_EGENERIC;
}
var_AddCallback( p_sys->p_vout, "mouse-x", MouseEvent, p_vout);
var_AddCallback( p_sys->p_vout, "mouse-y", MouseEvent, p_vout);
ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
ADD_CALLBACKS( p_sys->p_vout, SendEvents );
ADD_PARENT_CALLBACKS( SendEventsToChild );
return VLC_SUCCESS;
}
/*****************************************************************************
* End: terminate logo video thread output method
*****************************************************************************/
static void End( vout_thread_t *p_vout )
{
vout_sys_t *p_sys = p_vout->p_sys;
int i_index;
/* Free the fake output buffers we allocated */
for( i_index = I_OUTPUTPICTURES ; i_index ; )
{
i_index--;
free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
}
var_DelCallback( p_sys->p_vout, "mouse-x", MouseEvent, p_vout);
var_DelCallback( p_sys->p_vout, "mouse-y", MouseEvent, p_vout);
if( p_sys->p_vout )
{
DEL_CALLBACKS( p_sys->p_vout, SendEvents );
vlc_object_detach( p_sys->p_vout );
vout_Destroy( p_sys->p_vout );
}
if( p_sys->p_blend->p_module )
module_Unneed( p_sys->p_blend, p_sys->p_blend->p_module );
vlc_object_detach( p_sys->p_blend );
vlc_object_release( p_sys->p_blend );
}
/*****************************************************************************
* Destroy: destroy logo video thread output method
*****************************************************************************/
static void Destroy( vlc_object_t *p_this )
{
vout_thread_t *p_vout = (vout_thread_t *)p_this;
vout_sys_t *p_sys = p_vout->p_sys;
DEL_PARENT_CALLBACKS( SendEventsToChild );
FreeLogoList( p_sys->p_logo_list );
free( p_sys->p_logo_list );
free( p_sys );
}
/*****************************************************************************
* Render: render the logo onto the video
*****************************************************************************/
static void Render( vout_thread_t *p_vout, picture_t *p_inpic )
{
vout_sys_t *p_sys = p_vout->p_sys;
picture_t *p_outpic;
picture_t *p_pic;
logo_list_t *p_logo_list;
logo_t * p_logo;
p_logo_list = p_sys->p_logo_list;
if( p_logo_list->i_next_pic < p_inpic->date )
{
/* It's time to use a new logo */
p_logo_list->i_counter =
( p_logo_list->i_counter + 1 )%p_logo_list->i_count;
p_logo = &p_logo_list->p_logo[p_sys->p_logo_list->i_counter];
p_pic = p_logo->p_pic;
p_logo_list->i_next_pic = p_inpic->date + ( p_logo->i_delay != -1 ?
p_logo->i_delay : p_logo_list->i_delay ) * 1000;
if( p_pic )
{
p_sys->i_width =
p_sys->p_blend->fmt_in.video.i_width =
p_sys->p_blend->fmt_in.video.i_visible_width =
p_pic->p[Y_PLANE].i_visible_pitch;
p_sys->i_height =
p_sys->p_blend->fmt_in.video.i_height =
p_sys->p_blend->fmt_in.video.i_visible_height =
p_pic->p[Y_PLANE].i_visible_lines;
if( p_sys->pos )
{
if( p_sys->pos & SUBPICTURE_ALIGN_BOTTOM )
{
p_sys->posy = p_vout->render.i_height - p_sys->i_height;
}
else if ( !(p_sys->pos & SUBPICTURE_ALIGN_TOP) )
{
p_sys->posy = p_vout->render.i_height/2 - p_sys->i_height/2;
}
if( p_sys->pos & SUBPICTURE_ALIGN_RIGHT )
{
p_sys->posx = p_vout->render.i_width - p_sys->i_width;
}
else if ( !(p_sys->pos & SUBPICTURE_ALIGN_LEFT) )
{
p_sys->posx = p_vout->render.i_width/2 - p_sys->i_width/2;
}
}
}
}
else
{
p_logo = &p_logo_list->p_logo[p_sys->p_logo_list->i_counter];
p_pic = p_logo->p_pic;
}
/* This is a new frame. Get a structure from the video_output. */
while( !(p_outpic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 )) )
{
if( p_vout->b_die || p_vout->b_error ) return;
msleep( VOUT_OUTMEM_SLEEP );
}
vout_CopyPicture( p_vout, p_outpic, p_inpic );
vout_DatePicture( p_sys->p_vout, p_outpic, p_inpic->date );
if( p_pic )
p_sys->p_blend->pf_video_blend( p_sys->p_blend, p_outpic, p_outpic,
p_pic, p_sys->posx, p_sys->posy,
p_logo->i_alpha != -1 ? p_logo->i_alpha
: p_logo_list->i_alpha );
vout_DisplayPicture( p_sys->p_vout, p_outpic );
}
/*****************************************************************************
* SendEvents: forward mouse and keyboard events to the parent p_vout
*****************************************************************************/
static int SendEvents( vlc_object_t *p_this, char const *psz_var,
vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
VLC_UNUSED(p_this); VLC_UNUSED(oldval);
var_Set( (vlc_object_t *)p_data, psz_var, newval );
return VLC_SUCCESS;
}
/*****************************************************************************
* MouseEvent: callback for mouse events
*****************************************************************************/
static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
VLC_UNUSED(p_this); VLC_UNUSED(oldval);
vout_thread_t *p_vout = (vout_thread_t*)p_data;
vout_sys_t *p_sys = p_vout->p_sys;
vlc_value_t valb;
int i_delta;
var_Get( p_vout->p_sys->p_vout, "mouse-button-down", &valb );
i_delta = newval.i_int - oldval.i_int;
if( (valb.i_int & 0x1) == 0 )
{
return VLC_SUCCESS;
}
if( psz_var[6] == 'x' )
{
vlc_value_t valy;
var_Get( p_vout->p_sys->p_vout, "mouse-y", &valy );
if( newval.i_int >= (int)p_sys->posx &&
valy.i_int >= (int)p_sys->posy &&
newval.i_int <= (int)(p_sys->posx + p_sys->i_width) &&
valy.i_int <= (int)(p_sys->posy + p_sys->i_height) )
{
p_sys->posx = __MIN( __MAX( p_sys->posx + i_delta, 0 ),
p_vout->output.i_width - p_sys->i_width );
}
}
else if( psz_var[6] == 'y' )
{
vlc_value_t valx;
var_Get( p_vout->p_sys->p_vout, "mouse-x", &valx );
if( valx.i_int >= (int)p_sys->posx &&
newval.i_int >= (int)p_sys->posy &&
valx.i_int <= (int)(p_sys->posx + p_sys->i_width) &&
newval.i_int <= (int)(p_sys->posy + p_sys->i_height) )
{
p_sys->posy = __MIN( __MAX( p_sys->posy + i_delta, 0 ),
p_vout->output.i_height - p_sys->i_height );
}
}
return VLC_SUCCESS;
}
/*****************************************************************************
* Control: control facility for the vout (forwards to child vout)
*****************************************************************************/
static int Control( vout_thread_t *p_vout, int i_query, va_list args )
{
return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
}
/*****************************************************************************
* SendEventsToChild: forward events to the child/children vout
*****************************************************************************/
static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
VLC_UNUSED(p_data); VLC_UNUSED(oldval);
vout_thread_t *p_vout = (vout_thread_t *)p_this;
var_Set( p_vout->p_sys->p_vout, psz_var, newval );
return VLC_SUCCESS;
}
/*****************************************************************************
* filter_sys_t: logo filter descriptor
*****************************************************************************/
struct filter_sys_t
{
logo_list_t *p_logo_list;
int pos, posx, posy;
bool b_absolute;
mtime_t i_last_date;
/* On the fly control variable */
bool b_need_update;
};
static subpicture_t *Filter( filter_t *, mtime_t );
/*****************************************************************************
* CreateFilter: allocates logo video filter
*****************************************************************************/
static int CreateFilter( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t *)p_this;
filter_sys_t *p_sys;
logo_list_t *p_logo_list;
/* Allocate structure */
p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
if( p_sys == NULL )
{
msg_Err( p_filter, "out of memory" );
return VLC_ENOMEM;
}
p_logo_list = p_sys->p_logo_list = malloc( sizeof( logo_list_t ) );
if( p_logo_list == NULL )
{
msg_Err( p_filter, "out of memory" );
free( p_sys );
return VLC_ENOMEM;
}
config_ChainParse( p_filter, CFG_PREFIX, ppsz_filter_options,
p_filter->p_cfg );
/* Hook used for callback variables */
p_logo_list->psz_filename =
var_CreateGetStringCommand( p_filter, "logo-file" );
if( !p_logo_list->psz_filename || !*p_logo_list->psz_filename )
{
msg_Err( p_this, "logo file not specified" );
free( p_sys );
free( p_logo_list );
return VLC_EGENERIC;
}
p_sys->posx = var_CreateGetIntegerCommand( p_filter, "logo-x" );
p_sys->posy = var_CreateGetIntegerCommand( p_filter, "logo-y" );
p_sys->pos = var_CreateGetIntegerCommand( p_filter, "logo-position" );
p_logo_list->i_alpha = __MAX( __MIN( var_CreateGetIntegerCommand(
p_filter, "logo-transparency"), 255 ), 0 );
p_logo_list->i_delay =
var_CreateGetIntegerCommand( p_filter, "logo-delay" );
p_logo_list->i_repeat =
var_CreateGetIntegerCommand( p_filter, "logo-repeat" );
var_AddCallback( p_filter, "logo-file", LogoCallback, p_sys );
var_AddCallback( p_filter, "logo-x", LogoCallback, p_sys );
var_AddCallback( p_filter, "logo-y", LogoCallback, p_sys );
var_AddCallback( p_filter, "logo-position", LogoCallback, p_sys );
var_AddCallback( p_filter, "logo-transparency", LogoCallback, p_sys );
var_AddCallback( p_filter, "logo-repeat", LogoCallback, p_sys );
vlc_mutex_init( &p_logo_list->lock );
vlc_mutex_lock( &p_logo_list->lock );
LoadLogoList( p_this, p_logo_list );
vlc_mutex_unlock( &p_logo_list->lock );
/* Misc init */
p_filter->pf_sub_filter = Filter;
p_sys->b_need_update = true;
p_sys->i_last_date = 0;
return VLC_SUCCESS;
}
/*****************************************************************************
* DestroyFilter: destroy logo video filter
*****************************************************************************/
static void DestroyFilter( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t *)p_this;
filter_sys_t *p_sys = p_filter->p_sys;
vlc_mutex_destroy( &p_sys->p_logo_list->lock );
FreeLogoList( p_sys->p_logo_list );
free( p_sys->p_logo_list );
free( p_sys );
/* Delete the logo variables from INPUT */
var_Destroy( p_filter->p_libvlc, "logo-file" );
var_Destroy( p_filter->p_libvlc, "logo-x" );
var_Destroy( p_filter->p_libvlc, "logo-y" );
var_Destroy( p_filter->p_libvlc, "logo-delay" );
var_Destroy( p_filter->p_libvlc, "logo-repeat" );
var_Destroy( p_filter->p_libvlc, "logo-position" );
var_Destroy( p_filter->p_libvlc, "logo-transparency" );
}
/*****************************************************************************
* Filter: the whole thing
*****************************************************************************
* This function outputs subpictures at regular time intervals.
*****************************************************************************/
static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
{
filter_sys_t *p_sys = p_filter->p_sys;
logo_list_t *p_logo_list = p_sys->p_logo_list;
subpicture_t *p_spu;
subpicture_region_t *p_region;
video_format_t fmt;
picture_t *p_pic;
logo_t *p_logo;
vlc_mutex_lock( &p_logo_list->lock );
/* Basic test: b_need_update occurs on a dynamic change,
& i_next_pic is the general timer, when to
look at updating the logo image */
if( ( ( !p_sys->b_need_update ) && ( p_logo_list->i_next_pic > date ) )
|| !p_logo_list->i_repeat )
{
vlc_mutex_unlock( &p_logo_list->lock );
return 0;
}
/* prior code tested on && p_sys->i_last_date +5000000 > date ) return 0; */
/* adjust index to the next logo */
p_logo_list->i_counter =
( p_logo_list->i_counter + 1 )%p_logo_list->i_count;
p_logo = &p_logo_list->p_logo[p_logo_list->i_counter];
p_pic = p_logo->p_pic;
/* Allocate the subpicture internal data. */
p_spu = p_filter->pf_sub_buffer_new( p_filter );
if( !p_spu )
{
vlc_mutex_unlock( &p_logo_list->lock );
return NULL;
}
p_spu->b_absolute = p_sys->b_absolute;
p_spu->i_start = p_sys->i_last_date = date;
p_spu->i_stop = 0;
p_spu->b_ephemer = true;
p_sys->b_need_update = false;
p_logo_list->i_next_pic = date +
( p_logo->i_delay != -1 ? p_logo->i_delay : p_logo_list->i_delay ) * 1000;
if( p_logo_list->i_repeat != -1
&& p_logo_list->i_counter == 0 )
{
p_logo_list->i_repeat--;
if( p_logo_list->i_repeat == 0 )
{
vlc_mutex_unlock( &p_logo_list->lock );
return p_spu;
}
}
if( !p_pic || !p_logo->i_alpha
|| ( p_logo->i_alpha == -1 && !p_logo_list->i_alpha ) )
{
/* Send an empty subpicture to clear the display */
vlc_mutex_unlock( &p_logo_list->lock );
return p_spu;
}
/* Create new SPU region */
memset( &fmt, 0, sizeof(video_format_t) );
fmt.i_chroma = VLC_FOURCC('Y','U','V','A');
fmt.i_aspect = VOUT_ASPECT_FACTOR;
fmt.i_sar_num = fmt.i_sar_den = 1;
fmt.i_width = fmt.i_visible_width = p_pic->p[Y_PLANE].i_visible_pitch;
fmt.i_height = fmt.i_visible_height = p_pic->p[Y_PLANE].i_visible_lines;
fmt.i_x_offset = fmt.i_y_offset = 0;
p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt );
if( !p_region )
{
msg_Err( p_filter, "cannot allocate SPU region" );
p_filter->pf_sub_buffer_del( p_filter, p_spu );
vlc_mutex_unlock( &p_logo_list->lock );
return NULL;
}
vout_CopyPicture( p_filter, &p_region->picture, p_pic );
vlc_mutex_unlock( &p_logo_list->lock );
/* where to locate the logo: */
if( p_sys->pos < 0 )
{ /* set to an absolute xy */
p_region->i_align = OSD_ALIGN_RIGHT | OSD_ALIGN_TOP;
p_spu->b_absolute = true;
}
else
{ /* set to one of the 9 relative locations */
p_region->i_align = p_sys->pos;
p_spu->b_absolute = false;
}
p_spu->i_x = p_sys->posx;
p_spu->i_y = p_sys->posy;
p_spu->p_region = p_region;
p_spu->i_alpha = ( p_logo->i_alpha != -1 ?
p_logo->i_alpha : p_logo_list->i_alpha );
return p_spu;
}
/*****************************************************************************
* Callback to update params on the fly
*****************************************************************************/
static int LogoCallback( vlc_object_t *p_this, char const *psz_var,
vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
VLC_UNUSED(oldval);
filter_sys_t *p_sys = (filter_sys_t *)p_data;
logo_list_t *p_logo_list = p_sys->p_logo_list;
if( !strncmp( psz_var, "logo-file", 6 ) )
{
vlc_mutex_lock( &p_logo_list->lock );
FreeLogoList( p_logo_list );
p_logo_list->psz_filename = strdup( newval.psz_string );
LoadLogoList( p_this, p_logo_list );
vlc_mutex_unlock( &p_logo_list->lock );
p_sys->b_need_update = true;
}
else if ( !strncmp( psz_var, "logo-x", 6 ) )
{
p_sys->posx = newval.i_int;
}
else if ( !strncmp( psz_var, "logo-y", 6 ) )
{
p_sys->posy = newval.i_int;
}
else if ( !strncmp( psz_var, "logo-position", 12 ) )
{
p_sys->pos = newval.i_int;
}
else if ( !strncmp( psz_var, "logo-transparency", 9 ) )
{
vlc_mutex_lock( &p_logo_list->lock );
p_logo_list->i_alpha = __MAX( __MIN( newval.i_int, 255 ), 0 );
vlc_mutex_unlock( &p_logo_list->lock );
}
else if ( !strncmp( psz_var, "logo-repeat", 11 ) )
{
vlc_mutex_lock( &p_logo_list->lock );
p_logo_list->i_repeat = newval.i_int;
vlc_mutex_unlock( &p_logo_list->lock );
}
p_sys->b_need_update = true;
return VLC_SUCCESS;
}
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