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vlc/modules/video_filter/dynamicoverlay/dynamicoverlay_commands.c

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/*****************************************************************************
* dynamicoverlay_commands.c : dynamic overlay plugin commands
*****************************************************************************
* Copyright (C) 2008 the VideoLAN team
* $Id$
*
* Author: Søren Bøg <avacore@videolan.org>
* Jean-Paul Saman <jpsaman@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.
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_arrays.h>
#include <vlc_vout.h>
#include <vlc_filter.h>
#include <vlc_osd.h>
#include <string.h>
#include <ctype.h>
#if defined(HAVE_SYS_SHM_H)
#include <sys/shm.h>
#endif
#include "dynamicoverlay.h"
/*****************************************************************************
* overlay_t: Overlay descriptor
*****************************************************************************/
overlay_t *OverlayCreate( void )
{
overlay_t *p_ovl = calloc( 1, sizeof( overlay_t ) );
if( p_ovl == NULL )
return NULL;
p_ovl->i_x = p_ovl->i_y = 0;
p_ovl->i_alpha = 0xFF;
p_ovl->b_active = false;
video_format_Setup( &p_ovl->format, VLC_FOURCC( '\0','\0','\0','\0') , 0, 0,
1, 1 );
p_ovl->p_fontstyle = text_style_New();
p_ovl->data.p_text = NULL;
return p_ovl;
}
int OverlayDestroy( overlay_t *p_ovl )
{
free( p_ovl->data.p_text );
text_style_Delete( p_ovl->p_fontstyle );
return VLC_SUCCESS;
}
/*****************************************************************************
* Command parsers
*****************************************************************************/
static int skip_space( char **psz_command )
{
char *psz_temp = *psz_command;
while( isspace( (unsigned char)*psz_temp ) )
{
++psz_temp;
}
if( psz_temp == *psz_command )
{
return VLC_EGENERIC;
}
*psz_command = psz_temp;
return VLC_SUCCESS;
}
static int parse_digit( char **psz_command, int32_t *value )
{
char *psz_temp;
*value = strtol( *psz_command, &psz_temp, 10 );
if( psz_temp == *psz_command )
{
return VLC_EGENERIC;
}
*psz_command = psz_temp;
return VLC_SUCCESS;
}
static int parse_char( char **psz_command, char **psz_end,
int count, char *psz_value )
{
if( *psz_end - *psz_command < count )
{
return VLC_EGENERIC;
}
memcpy( psz_value, *psz_command, count );
*psz_command += count;
return VLC_SUCCESS;
}
static int parser_DataSharedMem( char *psz_command,
char *psz_end,
commandparams_t *p_params )
{
/* Parse: 0 128 128 RGBA 9404459 */
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
if( parse_digit( &psz_command, &p_params->i_id ) == VLC_EGENERIC )
return VLC_EGENERIC;
}
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
if( parse_digit( &psz_command, &p_params->i_width ) == VLC_EGENERIC )
return VLC_EGENERIC;
}
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
if( parse_digit( &psz_command, &p_params->i_height ) == VLC_EGENERIC )
return VLC_EGENERIC;
}
skip_space( &psz_command );
if( isascii( (unsigned char)*psz_command ) )
{
if( parse_char( &psz_command, &psz_end, 4, (char*)&p_params->fourcc )
== VLC_EGENERIC )
return VLC_EGENERIC;
}
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
if( parse_digit( &psz_command, &p_params->i_shmid ) == VLC_EGENERIC )
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
static int parser_Id( char *psz_command, char *psz_end,
commandparams_t *p_params )
{
VLC_UNUSED(psz_end);
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
if( parse_digit( &psz_command, &p_params->i_id ) == VLC_EGENERIC )
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
static int parser_None( char *psz_command, char *psz_end,
commandparams_t *p_params )
{
VLC_UNUSED(psz_command);
VLC_UNUSED(psz_end);
VLC_UNUSED(p_params);
return VLC_SUCCESS;
}
static int parser_SetAlpha( char *psz_command, char *psz_end,
commandparams_t *p_params )
{
VLC_UNUSED(psz_end);
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
if( parse_digit( &psz_command, &p_params->i_id ) == VLC_EGENERIC )
return VLC_EGENERIC;
}
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
if( parse_digit( &psz_command, &p_params->i_alpha ) == VLC_EGENERIC )
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
static int parser_SetPosition( char *psz_command, char *psz_end,
commandparams_t *p_params )
{
VLC_UNUSED(psz_end);
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
if( parse_digit( &psz_command, &p_params->i_id ) == VLC_EGENERIC )
return VLC_EGENERIC;
}
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
if( parse_digit( &psz_command, &p_params->i_x ) == VLC_EGENERIC )
return VLC_EGENERIC;
}
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
if( parse_digit( &psz_command, &p_params->i_y ) == VLC_EGENERIC )
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
static int parser_SetTextAlpha( char *psz_command, char *psz_end,
commandparams_t *p_params )
{
VLC_UNUSED(psz_end);
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
if( parse_digit( &psz_command, &p_params->i_id ) == VLC_EGENERIC )
return VLC_EGENERIC;
}
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
if( parse_digit( &psz_command, &p_params->fontstyle.i_font_alpha ) == VLC_EGENERIC )
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
static int parser_SetTextColor( char *psz_command, char *psz_end,
commandparams_t *p_params )
{
int r = 0, g = 0, b = 0;
VLC_UNUSED(psz_end);
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
if( parse_digit( &psz_command, &p_params->i_id ) == VLC_EGENERIC )
return VLC_EGENERIC;
}
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
if( parse_digit( &psz_command, &r ) == VLC_EGENERIC )
return VLC_EGENERIC;
}
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
if( parse_digit( &psz_command, &g ) == VLC_EGENERIC )
return VLC_EGENERIC;
}
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
if( parse_digit( &psz_command, &b ) == VLC_EGENERIC )
return VLC_EGENERIC;
}
p_params->fontstyle.i_font_color = (r<<16) | (g<<8) | (b<<0);
return VLC_SUCCESS;
}
static int parser_SetTextSize( char *psz_command, char *psz_end,
commandparams_t *p_params )
{
VLC_UNUSED(psz_end);
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
if( parse_digit( &psz_command, &p_params->i_id ) == VLC_EGENERIC )
return VLC_EGENERIC;
}
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
if( parse_digit( &psz_command, &p_params->fontstyle.i_font_size ) == VLC_EGENERIC )
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
static int parser_SetVisibility( char *psz_command, char *psz_end,
commandparams_t *p_params )
{
VLC_UNUSED(psz_end);
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
if( parse_digit( &psz_command, &p_params->i_id ) == VLC_EGENERIC )
return VLC_EGENERIC;
}
skip_space( &psz_command );
if( isdigit( (unsigned char)*psz_command ) )
{
int32_t i_vis = 0;
if( parse_digit( &psz_command, &i_vis ) == VLC_EGENERIC )
return VLC_EGENERIC;
p_params->b_visible = (i_vis == 1) ? true : false;
}
return VLC_SUCCESS;
}
/*****************************************************************************
* Command unparser functions
*****************************************************************************/
static int unparse_default( const commandparams_t *p_results,
buffer_t *p_output )
{
VLC_UNUSED(p_results);
VLC_UNUSED(p_output);
return VLC_SUCCESS;
}
static int unparse_GenImage( const commandparams_t *p_results,
buffer_t *p_output )
{
int ret = BufferPrintf( p_output, " %d", p_results->i_id );
if( ret != VLC_SUCCESS )
return ret;
return VLC_SUCCESS;
}
static int unparse_GetAlpha( const commandparams_t *p_results,
buffer_t *p_output )
{
int ret = BufferPrintf( p_output, " %d", p_results->i_alpha );
if( ret != VLC_SUCCESS )
return ret;
return VLC_SUCCESS;
}
static int unparse_GetPosition( const commandparams_t *p_results,
buffer_t *p_output )
{
int ret = BufferPrintf( p_output, " %d", p_results->i_x );
if( ret != VLC_SUCCESS )
return ret;
ret = BufferPrintf( p_output, " %d", p_results->i_y );
if( ret != VLC_SUCCESS )
return ret;
return VLC_SUCCESS;
}
static int unparse_GetTextAlpha( const commandparams_t *p_results,
buffer_t *p_output )
{
int ret = BufferPrintf( p_output, " %d", p_results->fontstyle.i_font_alpha );
if( ret != VLC_SUCCESS )
return ret;
return VLC_SUCCESS;
}
static int unparse_GetTextColor( const commandparams_t *p_results,
buffer_t *p_output )
{
int ret = BufferPrintf( p_output, " %d", (p_results->fontstyle.i_font_color & 0xff0000)>>16 );
if( ret != VLC_SUCCESS )
return ret;
ret = BufferPrintf( p_output, " %d", (p_results->fontstyle.i_font_color & 0x00ff00)>>8 );
if( ret != VLC_SUCCESS )
return ret;
ret = BufferPrintf( p_output, " %d", (p_results->fontstyle.i_font_color & 0x0000ff) );
if( ret != VLC_SUCCESS )
return ret;
return VLC_SUCCESS;
}
static int unparse_GetTextSize( const commandparams_t *p_results,
buffer_t *p_output )
{
int ret = BufferPrintf( p_output, " %d", p_results->fontstyle.i_font_size );
if( ret != VLC_SUCCESS )
return ret;
return VLC_SUCCESS;
}
static int unparse_GetVisibility( const commandparams_t *p_results,
buffer_t *p_output )
{
int ret = BufferPrintf( p_output, " %d", (p_results->b_visible ? 1 : 0) );
if( ret != VLC_SUCCESS ) {
return ret;
}
return VLC_SUCCESS;
}
/*****************************************************************************
* Command functions
*****************************************************************************/
static int exec_DataSharedMem( filter_t *p_filter,
const commandparams_t *p_params,
commandparams_t *p_results )
{
#if defined(HAVE_SYS_SHM_H)
filter_sys_t *p_sys = (filter_sys_t*) p_filter->p_sys;
struct shmid_ds shminfo;
overlay_t *p_ovl;
size_t i_size;
VLC_UNUSED(p_results);
p_ovl = ListGet( &p_sys->overlays, p_params->i_id );
if( p_ovl == NULL )
{
msg_Err( p_filter, "Invalid overlay: %d", p_params->i_id );
return VLC_EGENERIC;
}
if( shmctl( p_params->i_shmid, IPC_STAT, &shminfo ) == -1 )
{
msg_Err( p_filter, "Unable to access shared memory" );
return VLC_EGENERIC;
}
i_size = shminfo.shm_segsz;
if( p_params->fourcc == VLC_CODEC_TEXT )
{
char *p_data;
if( (p_params->i_height != 1) || (p_params->i_width < 1) )
{
msg_Err( p_filter,
"Invalid width and/or height. when specifying text height "
"must be 1 and width the number of bytes in the string, "
"including the null terminator" );
return VLC_EGENERIC;
}
if( (size_t)p_params->i_width > i_size )
{
msg_Err( p_filter,
"Insufficient data in shared memory. need %d, got %zu",
p_params->i_width, i_size );
return VLC_EGENERIC;
}
p_ovl->data.p_text = malloc( p_params->i_width );
if( p_ovl->data.p_text == NULL )
{
msg_Err( p_filter, "Unable to allocate string storage" );
return VLC_ENOMEM;
}
video_format_Setup( &p_ovl->format, VLC_CODEC_TEXT,
0, 0, 0, 1 );
p_data = shmat( p_params->i_shmid, NULL, SHM_RDONLY );
if( p_data == NULL )
{
msg_Err( p_filter, "Unable to attach to shared memory" );
free( p_ovl->data.p_text );
p_ovl->data.p_text = NULL;
return VLC_ENOMEM;
}
memcpy( p_ovl->data.p_text, p_data, p_params->i_width );
shmdt( p_data );
}
else
{
uint8_t *p_data, *p_in;
size_t i_neededsize = 0;
p_ovl->data.p_pic = picture_New( p_params->fourcc,
p_params->i_width, p_params->i_height,
1, 1 );
if( p_ovl->data.p_pic == NULL )
return VLC_ENOMEM;
p_ovl->format = p_ovl->data.p_pic->format;
for( size_t i_plane = 0; i_plane < (size_t)p_ovl->data.p_pic->i_planes;
++i_plane )
{
i_neededsize += p_ovl->data.p_pic->p[i_plane].i_visible_lines *
p_ovl->data.p_pic->p[i_plane].i_visible_pitch;
}
if( i_neededsize > i_size )
{
msg_Err( p_filter,
"Insufficient data in shared memory. need %zu, got %zu",
i_neededsize, i_size );
picture_Release( p_ovl->data.p_pic );
p_ovl->data.p_pic = NULL;
return VLC_EGENERIC;
}
p_data = shmat( p_params->i_shmid, NULL, SHM_RDONLY );
if( p_data == NULL )
{
msg_Err( p_filter, "Unable to attach to shared memory" );
picture_Release( p_ovl->data.p_pic );
p_ovl->data.p_pic = NULL;
return VLC_ENOMEM;
}
p_in = p_data;
for( size_t i_plane = 0; i_plane < (size_t)p_ovl->data.p_pic->i_planes;
++i_plane )
{
uint8_t *p_out = p_ovl->data.p_pic->p[i_plane].p_pixels;
for( size_t i_line = 0;
i_line < (size_t)p_ovl->data.p_pic->p[i_plane].i_visible_lines;
++i_line )
{
vlc_memcpy( p_out, p_in,
p_ovl->data.p_pic->p[i_plane].i_visible_pitch );
p_out += p_ovl->data.p_pic->p[i_plane].i_pitch;
p_in += p_ovl->data.p_pic->p[i_plane].i_visible_pitch;
}
}
shmdt( p_data );
}
p_sys->b_updated = p_ovl->b_active;
return VLC_SUCCESS;
#else
VLC_UNUSED(p_params);
VLC_UNUSED(p_results);
msg_Err( p_filter, "system doesn't support shared memory" );
return VLC_EGENERIC;
#endif
}
static int exec_DeleteImage( filter_t *p_filter,
const commandparams_t *p_params,
commandparams_t *p_results )
{
VLC_UNUSED(p_results);
filter_sys_t *p_sys = (filter_sys_t*) p_filter->p_sys;
p_sys->b_updated = true;
return ListRemove( &p_sys->overlays, p_params->i_id );
}
static int exec_EndAtomic( filter_t *p_filter,
const commandparams_t *p_params,
commandparams_t *p_results )
{
VLC_UNUSED(p_params);
VLC_UNUSED(p_results);
filter_sys_t *p_sys = (filter_sys_t*) p_filter->p_sys;
QueueTransfer( &p_sys->pending, &p_sys->atomic );
p_sys->b_atomic = false;
return VLC_SUCCESS;
}
static int exec_GenImage( filter_t *p_filter,
const commandparams_t *p_params,
commandparams_t *p_results )
{
VLC_UNUSED(p_params);
filter_sys_t *p_sys = (filter_sys_t*) p_filter->p_sys;
overlay_t *p_ovl = OverlayCreate();
if( p_ovl == NULL )
return VLC_ENOMEM;
ssize_t i_idx = ListAdd( &p_sys->overlays, p_ovl );
if( i_idx < 0 )
return i_idx;
p_results->i_id = i_idx;
return VLC_SUCCESS;
}
static int exec_GetAlpha( filter_t *p_filter,
const commandparams_t *p_params,
commandparams_t *p_results )
{
filter_sys_t *p_sys = (filter_sys_t*) p_filter->p_sys;
overlay_t *p_ovl = ListGet( &p_sys->overlays, p_params->i_id );
if( p_ovl == NULL )
return VLC_EGENERIC;
p_results->i_alpha = p_ovl->i_alpha;
return VLC_SUCCESS;
}
static int exec_GetPosition( filter_t *p_filter,
const commandparams_t *p_params,
commandparams_t *p_results )
{
filter_sys_t *p_sys = (filter_sys_t*) p_filter->p_sys;
overlay_t *p_ovl = ListGet( &p_sys->overlays, p_params->i_id );
if( p_ovl == NULL )
return VLC_EGENERIC;
p_results->i_x = p_ovl->i_x;
p_results->i_y = p_ovl->i_y;
return VLC_SUCCESS;
}
static int exec_GetTextAlpha( filter_t *p_filter,
const commandparams_t *p_params,
commandparams_t *p_results )
{
filter_sys_t *p_sys = (filter_sys_t*) p_filter->p_sys;
overlay_t *p_ovl = ListGet( &p_sys->overlays, p_params->i_id );
if( p_ovl == NULL )
return VLC_EGENERIC;
p_results->fontstyle.i_font_alpha = p_ovl->p_fontstyle->i_font_alpha;
return VLC_SUCCESS;
}
static int exec_GetTextColor( filter_t *p_filter,
const commandparams_t *p_params,
commandparams_t *p_results )
{
filter_sys_t *p_sys = (filter_sys_t*) p_filter->p_sys;
overlay_t *p_ovl = ListGet( &p_sys->overlays, p_params->i_id );
if( p_ovl == NULL )
return VLC_EGENERIC;
p_results->fontstyle.i_font_color = p_ovl->p_fontstyle->i_font_color;
return VLC_SUCCESS;
}
static int exec_GetTextSize( filter_t *p_filter,
const commandparams_t *p_params,
commandparams_t *p_results )
{
filter_sys_t *p_sys = (filter_sys_t*) p_filter->p_sys;
overlay_t *p_ovl = ListGet( &p_sys->overlays, p_params->i_id );
if( p_ovl == NULL )
return VLC_EGENERIC;
p_results->fontstyle.i_font_size = p_ovl->p_fontstyle->i_font_size;
return VLC_SUCCESS;
}
static int exec_GetVisibility( filter_t *p_filter,
const commandparams_t *p_params,
commandparams_t *p_results )
{
filter_sys_t *p_sys = (filter_sys_t*) p_filter->p_sys;
overlay_t *p_ovl = ListGet( &p_sys->overlays, p_params->i_id );
if( p_ovl == NULL )
return VLC_EGENERIC;
p_results->b_visible = p_ovl->b_active ? 1 : 0;
return VLC_SUCCESS;
}
static int exec_SetAlpha( filter_t *p_filter,
const commandparams_t *p_params,
commandparams_t *p_results )
{
VLC_UNUSED(p_results);
filter_sys_t *p_sys = (filter_sys_t*) p_filter->p_sys;
overlay_t *p_ovl = ListGet( &p_sys->overlays, p_params->i_id );
if( p_ovl == NULL )
return VLC_EGENERIC;
p_ovl->i_alpha = p_params->i_alpha;
p_sys->b_updated = p_ovl->b_active;
return VLC_SUCCESS;
}
static int exec_SetPosition( filter_t *p_filter,
const commandparams_t *p_params,
commandparams_t *p_results )
{
VLC_UNUSED(p_results);
filter_sys_t *p_sys = (filter_sys_t*) p_filter->p_sys;
overlay_t *p_ovl = ListGet( &p_sys->overlays, p_params->i_id );
if( p_ovl == NULL )
return VLC_EGENERIC;
p_ovl->i_x = p_params->i_x;
p_ovl->i_y = p_params->i_y;
p_sys->b_updated = p_ovl->b_active;
return VLC_SUCCESS;
}
static int exec_SetTextAlpha( filter_t *p_filter,
const commandparams_t *p_params,
commandparams_t *p_results )
{
VLC_UNUSED(p_results);
filter_sys_t *p_sys = (filter_sys_t*) p_filter->p_sys;
overlay_t *p_ovl = ListGet( &p_sys->overlays, p_params->i_id );
if( p_ovl == NULL )
return VLC_EGENERIC;
p_ovl->p_fontstyle->i_font_alpha = p_params->fontstyle.i_font_alpha;
p_sys->b_updated = p_ovl->b_active;
return VLC_SUCCESS;
}
static int exec_SetTextColor( filter_t *p_filter,
const commandparams_t *p_params,
commandparams_t *p_results )
{
VLC_UNUSED(p_results);
filter_sys_t *p_sys = (filter_sys_t*) p_filter->p_sys;
overlay_t *p_ovl = ListGet( &p_sys->overlays, p_params->i_id );
if( p_ovl == NULL )
return VLC_EGENERIC;
p_ovl->p_fontstyle->i_font_color = p_params->fontstyle.i_font_color;
p_sys->b_updated = p_ovl->b_active;
return VLC_SUCCESS;
}
static int exec_SetTextSize( filter_t *p_filter,
const commandparams_t *p_params,
commandparams_t *p_results )
{
VLC_UNUSED(p_results);
filter_sys_t *p_sys = (filter_sys_t*) p_filter->p_sys;
overlay_t *p_ovl = ListGet( &p_sys->overlays, p_params->i_id );
if( p_ovl == NULL )
return VLC_EGENERIC;
p_ovl->p_fontstyle->i_font_size = p_params->fontstyle.i_font_size;
p_sys->b_updated = p_ovl->b_active;
return VLC_SUCCESS;
}
static int exec_SetVisibility( filter_t *p_filter,
const commandparams_t *p_params,
commandparams_t *p_results )
{
VLC_UNUSED(p_results);
filter_sys_t *p_sys = (filter_sys_t*) p_filter->p_sys;
overlay_t *p_ovl = ListGet( &p_sys->overlays, p_params->i_id );
if( p_ovl == NULL )
return VLC_EGENERIC;
p_ovl->b_active = p_params->b_visible;// ? false : true;
p_sys->b_updated = true;
return VLC_SUCCESS;
}
static int exec_StartAtomic( filter_t *p_filter,
const commandparams_t *p_params,
commandparams_t *p_results )
{
filter_sys_t *p_sys = (filter_sys_t*) p_filter->p_sys;
VLC_UNUSED(p_params);
VLC_UNUSED(p_results);
p_sys->b_atomic = true;
return VLC_SUCCESS;
}
/*****************************************************************************
* Command functions
*****************************************************************************/
static const commanddesc_static_t p_commands[] =
{
{ .psz_command = "DataSharedMem",
.b_atomic = true,
.pf_parser = parser_DataSharedMem,
.pf_execute = exec_DataSharedMem,
.pf_unparse = unparse_default,
},
{ .psz_command = "DeleteImage",
.b_atomic = true,
.pf_parser = parser_Id,
.pf_execute = exec_DeleteImage,
.pf_unparse = unparse_default,
},
{ .psz_command = "EndAtomic",
.b_atomic = false,
.pf_parser = parser_None,
.pf_execute = exec_EndAtomic,
.pf_unparse = unparse_default,
},
{ .psz_command = "GenImage",
.b_atomic = false,
.pf_parser = parser_None,
.pf_execute = exec_GenImage,
.pf_unparse = unparse_GenImage,
},
{ .psz_command = "GetAlpha",
.b_atomic = false,
.pf_parser = parser_Id,
.pf_execute = exec_GetAlpha,
.pf_unparse = unparse_GetAlpha,
},
{ .psz_command = "GetPosition",
.b_atomic = false,
.pf_parser = parser_Id,
.pf_execute = exec_GetPosition,
.pf_unparse = unparse_GetPosition,
},
{ .psz_command = "GetTextAlpha",
.b_atomic = false,
.pf_parser = parser_Id,
.pf_execute = exec_GetTextAlpha,
.pf_unparse = unparse_GetTextAlpha,
},
{ .psz_command = "GetTextColor",
.b_atomic = false,
.pf_parser = parser_Id,
.pf_execute = exec_GetTextColor,
.pf_unparse = unparse_GetTextColor,
},
{ .psz_command = "GetTextSize",
.b_atomic = true,
.pf_parser = parser_Id,
.pf_execute = exec_GetTextSize,
.pf_unparse = unparse_GetTextSize,
},
{ .psz_command = "GetVisibility",
.b_atomic = false,
.pf_parser = parser_Id,
.pf_execute = exec_GetVisibility,
.pf_unparse = unparse_GetVisibility,
},
{ .psz_command = "SetAlpha",
.b_atomic = true,
.pf_parser = parser_SetAlpha,
.pf_execute = exec_SetAlpha,
.pf_unparse = unparse_default,
},
{ .psz_command = "SetPosition",
.b_atomic = true,
.pf_parser = parser_SetPosition,
.pf_execute = exec_SetPosition,
.pf_unparse = unparse_default,
},
{ .psz_command = "SetTextAlpha",
.b_atomic = true,
.pf_parser = parser_SetTextAlpha,
.pf_execute = exec_SetTextAlpha,
.pf_unparse = unparse_default,
},
{ .psz_command = "SetTextColor",
.b_atomic = true,
.pf_parser = parser_SetTextColor,
.pf_execute = exec_SetTextColor,
.pf_unparse = unparse_default,
},
{ .psz_command = "SetTextSize",
.b_atomic = true,
.pf_parser = parser_SetTextSize,
.pf_execute = exec_SetTextSize,
.pf_unparse = unparse_default,
},
{ .psz_command = "SetVisibility",
.b_atomic = true,
.pf_parser = parser_SetVisibility,
.pf_execute = exec_SetVisibility,
.pf_unparse = unparse_default,
},
{ .psz_command = "StartAtomic",
.b_atomic = true,
.pf_parser = parser_None,
.pf_execute = exec_StartAtomic,
.pf_unparse = unparse_default,
}
};
void RegisterCommand( filter_t *p_filter )
{
filter_sys_t *p_sys = (filter_sys_t*) p_filter->p_sys;
size_t i_index = 0;
p_sys->i_commands = ARRAY_SIZE(p_commands);
p_sys->pp_commands = (commanddesc_t **) calloc( p_sys->i_commands, sizeof(commanddesc_t*) );
if( !p_sys->pp_commands ) return;
for( i_index = 0; i_index < p_sys->i_commands; i_index ++ )
{
p_sys->pp_commands[i_index] = (commanddesc_t *) malloc( sizeof(commanddesc_t) );
if( !p_sys->pp_commands[i_index] ) return;
p_sys->pp_commands[i_index]->psz_command = strdup( p_commands[i_index].psz_command );
p_sys->pp_commands[i_index]->b_atomic = p_commands[i_index].b_atomic;
p_sys->pp_commands[i_index]->pf_parser = p_commands[i_index].pf_parser;
p_sys->pp_commands[i_index]->pf_execute = p_commands[i_index].pf_execute;
p_sys->pp_commands[i_index]->pf_unparse = p_commands[i_index].pf_unparse;
}
msg_Dbg( p_filter, "%zu commands are available", p_sys->i_commands );
for( size_t i_index = 0; i_index < p_sys->i_commands; i_index++ )
msg_Dbg( p_filter, " %s", p_sys->pp_commands[i_index]->psz_command );
}
void UnregisterCommand( filter_t *p_filter )
{
filter_sys_t *p_sys = (filter_sys_t*) p_filter->p_sys;
size_t i_index = 0;
for( i_index = 0; i_index < p_sys->i_commands; i_index++ )
{
free( p_sys->pp_commands[i_index]->psz_command );
free( p_sys->pp_commands[i_index] );
}
free( p_sys->pp_commands );
p_sys->pp_commands = NULL;
p_sys->i_commands = 0;
}
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