/*****************************************************************************
* osd_widgets.c : OSD widgets manipulation functions
*****************************************************************************
* Copyright (C) 2004-2007 the VideoLAN team
* $Id$
*
* Author: Yoann Peronneau <yoann@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_common.h"
#include "vlc_osd.h"
#include "vlc_vout.h"
#include "vlc_filter.h"
#define STYLE_EMPTY 0
#define STYLE_FILLED 1
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static void DrawRect( subpicture_t *, int, int, int, int, short );
static void DrawTriangle( subpicture_t *, int, int, int, int, short );
static int CreatePicture( spu_t *, subpicture_t *, int, int, int, int );
static subpicture_t *osd_CreateWidget( spu_t *, int );
/*****************************************************************************
* Draws a rectangle at the given position in the subpic.
* It may be filled (fill == STYLE_FILLED) or empty (fill == STYLE_EMPTY).
*****************************************************************************/
static void DrawRect( subpicture_t *p_subpic, int i_x1, int i_y1,
int i_x2, int i_y2, short fill )
{
int x, y;
uint8_t *p_a = p_subpic->p_region->picture.A_PIXELS;
int i_pitch = p_subpic->p_region->picture.Y_PITCH;
if( fill == STYLE_FILLED )
{
for( y = i_y1; y <= i_y2; y++ )
{
for( x = i_x1; x <= i_x2; x++ )
{
p_a[ x + i_pitch * y ] = 0xff;
}
}
}
else
{
for( y = i_y1; y <= i_y2; y++ )
{
p_a[ i_x1 + i_pitch * y ] = 0xff;
p_a[ i_x2 + i_pitch * y ] = 0xff;
}
for( x = i_x1; x <= i_x2; x++ )
{
p_a[ x + i_pitch * i_y1 ] = 0xff;
p_a[ x + i_pitch * i_y2 ] = 0xff;
}
}
}
/*****************************************************************************
* Draws a triangle at the given position in the subpic.
* It may be filled (fill == STYLE_FILLED) or empty (fill == STYLE_EMPTY).
*****************************************************************************/
static void DrawTriangle( subpicture_t *p_subpic, int i_x1, int i_y1,
int i_x2, int i_y2, short fill )
{
int x, y, i_mid, h;
uint8_t *p_a = p_subpic->p_region->picture.A_PIXELS;
int i_pitch = p_subpic->p_region->picture.Y_PITCH;
i_mid = i_y1 + ( ( i_y2 - i_y1 ) >> 1 );
if( i_x2 >= i_x1 )
{
if( fill == STYLE_FILLED )
{
for( y = i_y1; y <= i_mid; y++ )
{
h = y - i_y1;
for( x = i_x1; x <= i_x1 + h && x <= i_x2; x++ )
{
p_a[ x + i_pitch * y ] = 0xff;
p_a[ x + i_pitch * ( i_y2 - h ) ] = 0xff;
}
}
}
else
{
for( y = i_y1; y <= i_mid; y++ )
{
h = y - i_y1;
p_a[ i_x1 + i_pitch * y ] = 0xff;
p_a[ i_x1 + h + i_pitch * y ] = 0xff;
p_a[ i_x1 + i_pitch * ( i_y2 - h ) ] = 0xff;
p_a[ i_x1 + h + i_pitch * ( i_y2 - h ) ] = 0xff;
}
}
}
else
{
if( fill == STYLE_FILLED )
{
for( y = i_y1; y <= i_mid; y++ )
{
h = y - i_y1;
for( x = i_x1; x >= i_x1 - h && x >= i_x2; x-- )
{
p_a[ x + i_pitch * y ] = 0xff;
p_a[ x + i_pitch * ( i_y2 - h ) ] = 0xff;
}
}
}
else
{
for( y = i_y1; y <= i_mid; y++ )
{
h = y - i_y1;
p_a[ i_x1 + i_pitch * y ] = 0xff;
p_a[ i_x1 - h + i_pitch * y ] = 0xff;
p_a[ i_x1 + i_pitch * ( i_y2 - h ) ] = 0xff;
p_a[ i_x1 - h + i_pitch * ( i_y2 - h ) ] = 0xff;
}
}
}
}
/*****************************************************************************
* Create Picture: creates subpicture region and picture
*****************************************************************************/
static int CreatePicture( spu_t *p_spu, subpicture_t *p_subpic,
int i_x, int i_y, int i_width, int i_height )
{
uint8_t *p_y, *p_u, *p_v, *p_a;
video_format_t fmt;
int i_pitch;
/* Create a new subpicture region */
memset( &fmt, 0, sizeof(video_format_t) );
fmt.i_chroma = VLC_FOURCC('Y','U','V','A');
fmt.i_aspect = 0;
fmt.i_width = fmt.i_visible_width = i_width;
fmt.i_height = fmt.i_visible_height = i_height;
fmt.i_x_offset = fmt.i_y_offset = 0;
p_subpic->p_region = p_subpic->pf_create_region( VLC_OBJECT(p_spu), &fmt );
if( !p_subpic->p_region )
{
msg_Err( p_spu, "cannot allocate SPU region" );
return VLC_EGENERIC;
}
p_subpic->p_region->i_x = i_x;
p_subpic->p_region->i_y = i_y;
p_y = p_subpic->p_region->picture.Y_PIXELS;
p_u = p_subpic->p_region->picture.U_PIXELS;
p_v = p_subpic->p_region->picture.V_PIXELS;
p_a = p_subpic->p_region->picture.A_PIXELS;
i_pitch = p_subpic->p_region->picture.Y_PITCH;
/* Initialize the region pixels (only the alpha will be changed later) */
memset( p_y, 0xff, i_pitch * p_subpic->p_region->fmt.i_height );
memset( p_u, 0x80, i_pitch * p_subpic->p_region->fmt.i_height );
memset( p_v, 0x80, i_pitch * p_subpic->p_region->fmt.i_height );
memset( p_a, 0x00, i_pitch * p_subpic->p_region->fmt.i_height );
return VLC_SUCCESS;
}
/*****************************************************************************
* Creates and initializes an OSD widget.
*****************************************************************************/
subpicture_t *osd_CreateWidget( spu_t *p_spu, int i_channel )
{
subpicture_t *p_subpic;
mtime_t i_now = mdate();
/* Create and initialize a subpicture */
p_subpic = spu_CreateSubpicture( p_spu );
if( p_subpic == NULL ) return NULL;
p_subpic->i_channel = i_channel;
p_subpic->i_start = i_now;
p_subpic->i_stop = i_now + 1200000;
p_subpic->b_ephemer = true;
p_subpic->b_fade = true;
return p_subpic;
}
/*****************************************************************************
* Displays an OSD slider.
* Types are: OSD_HOR_SLIDER and OSD_VERT_SLIDER.
*****************************************************************************/
int osd_Slider( vlc_object_t *p_this, spu_t *p_spu,
int i_render_width, int i_render_height,
int i_margin_left, int i_margin_bottom,
int i_channel, int i_position, short i_type )
{
subpicture_t *p_subpic;
int i_x_margin, i_y_margin, i_x, i_y, i_width, i_height;
(void)p_this;
p_subpic = osd_CreateWidget( p_spu, i_channel );
if( p_subpic == NULL )
{
return VLC_EGENERIC;
}
i_y_margin = i_render_height / 10;
i_x_margin = i_y_margin + i_margin_left;
i_y_margin += i_margin_bottom;
if( i_type == OSD_HOR_SLIDER )
{
i_width = i_render_width - 2 * i_x_margin;
i_height = i_render_height / 20;
i_x = i_x_margin;
i_y = i_render_height - i_y_margin - i_height;
}
else
{
i_width = i_render_width / 40;
i_height = i_render_height - 2 * i_y_margin;
i_x = i_render_width - i_x_margin - i_width;
i_y = i_y_margin;
}
/* Create subpicture region and picture */
CreatePicture( p_spu, p_subpic, i_x, i_y, i_width, i_height );
if( i_type == OSD_HOR_SLIDER )
{
int i_x_pos = ( i_width - 2 ) * i_position / 100;
DrawRect( p_subpic, i_x_pos - 1, 2, i_x_pos + 1,
i_height - 3, STYLE_FILLED );
DrawRect( p_subpic, 0, 0, i_width - 1, i_height - 1, STYLE_EMPTY );
}
else if( i_type == OSD_VERT_SLIDER )
{
int i_y_pos = i_height / 2;
DrawRect( p_subpic, 2, i_height - ( i_height - 2 ) * i_position / 100,
i_width - 3, i_height - 3, STYLE_FILLED );
DrawRect( p_subpic, 1, i_y_pos, 1, i_y_pos, STYLE_FILLED );
DrawRect( p_subpic, i_width - 2, i_y_pos,
i_width - 2, i_y_pos, STYLE_FILLED );
DrawRect( p_subpic, 0, 0, i_width - 1, i_height - 1, STYLE_EMPTY );
}
spu_DisplaySubpicture( p_spu, p_subpic );
return VLC_SUCCESS;
}
/*****************************************************************************
* Displays an OSD icon.
* Types are: OSD_PLAY_ICON, OSD_PAUSE_ICON, OSD_SPEAKER_ICON, OSD_MUTE_ICON
*****************************************************************************/
int osd_Icon( vlc_object_t *p_this, spu_t *p_spu,
int i_render_width, int i_render_height, int i_margin_right,
int i_margin_top, int i_channel, short i_type )
{
subpicture_t *p_subpic;
int i_x_margin, i_y_margin, i_x, i_y, i_width, i_height;
(void)p_this;
p_subpic = osd_CreateWidget( p_spu, i_channel );
if( p_subpic == NULL )
{
return VLC_EGENERIC;
}
i_y_margin = i_render_height / 15;
i_x_margin = i_y_margin + i_margin_right;
i_y_margin += i_margin_top;
i_width = i_render_width / 20;
i_height = i_width;
i_x = i_render_width - i_x_margin - i_width;
i_y = i_y_margin;
/* Create subpicture region and picture */
CreatePicture( p_spu, p_subpic, i_x, i_y, i_width, i_height );
if( i_type == OSD_PAUSE_ICON )
{
int i_bar_width = i_width / 3;
DrawRect( p_subpic, 0, 0, i_bar_width - 1, i_height -1, STYLE_FILLED );
DrawRect( p_subpic, i_width - i_bar_width, 0,
i_width - 1, i_height - 1, STYLE_FILLED );
}
else if( i_type == OSD_PLAY_ICON )
{
int i_mid = i_height >> 1;
int i_delta = ( i_width - i_mid ) >> 1;
int i_y2 = ( ( i_height - 1 ) >> 1 ) * 2;
DrawTriangle( p_subpic, i_delta, 0, i_width - i_delta, i_y2,
STYLE_FILLED );
}
else if( i_type == OSD_SPEAKER_ICON || i_type == OSD_MUTE_ICON )
{
int i_mid = i_height >> 1;
int i_delta = ( i_width - i_mid ) >> 1;
int i_y2 = ( ( i_height - 1 ) >> 1 ) * 2;
DrawRect( p_subpic, i_delta, i_mid / 2, i_width - i_delta,
i_height - 1 - i_mid / 2, STYLE_FILLED );
DrawTriangle( p_subpic, i_width - i_delta, 0, i_delta, i_y2,
STYLE_FILLED );
if( i_type == OSD_MUTE_ICON )
{
uint8_t *p_a = p_subpic->p_region->picture.A_PIXELS;
int i_pitch = p_subpic->p_region->picture.Y_PITCH;
int i;
for( i = 1; i < i_pitch; i++ )
{
int k = i + ( i_height - i - 1 ) * i_pitch;
p_a[ k ] = 0xff - p_a[ k ];
}
}
}
spu_DisplaySubpicture( p_spu, p_subpic );
return VLC_SUCCESS;
}
