/*****************************************************************************
* blend.c: alpha blend 2 pictures together
*****************************************************************************
- * Copyright (C) 2003 VideoLAN
+ * Copyright (C) 2003 the VideoLAN team
* $Id$
*
* Author: Gildas Bazin <gbazin@videolan.org>
*****************************************************************************/
struct filter_sys_t
{
+ int i_dummy;
};
/****************************************************************************
static int OpenFilter ( vlc_object_t * );
static void CloseFilter( vlc_object_t * );
+/* TODO i_alpha support for BlendR16 */
static void Blend( filter_t *, picture_t *, picture_t *, picture_t *,
- int, int );
+ int, int, int );
static void BlendI420( filter_t *, picture_t *, picture_t *, picture_t *,
- int, int, int, int );
+ int, int, int, int, int );
static void BlendR16( filter_t *, picture_t *, picture_t *, picture_t *,
- int, int, int, int );
+ int, int, int, int, int );
static void BlendR24( filter_t *, picture_t *, picture_t *, picture_t *,
- int, int, int, int );
+ int, int, int, int, int );
static void BlendYUY2( filter_t *, picture_t *, picture_t *, picture_t *,
- int, int, int, int );
+ int, int, int, int, int );
static void BlendPalI420( filter_t *, picture_t *, picture_t *, picture_t *,
- int, int, int, int );
+ int, int, int, int, int );
static void BlendPalYUY2( filter_t *, picture_t *, picture_t *, picture_t *,
- int, int, int, int );
+ int, int, int, int, int );
static void BlendPalRV( filter_t *, picture_t *, picture_t *, picture_t *,
- int, int, int, int );
+ int, int, int, int, int );
/*****************************************************************************
* Module descriptor
*****************************************************************************/
vlc_module_begin();
set_description( _("Video pictures blending") );
+ set_category( CAT_VIDEO );
+ set_subcategory( SUBCAT_VIDEO_VFILTER );
set_capability( "video blending", 100 );
set_callbacks( OpenFilter, CloseFilter );
vlc_module_end();
****************************************************************************/
static void Blend( filter_t *p_filter, picture_t *p_dst,
picture_t *p_dst_orig, picture_t *p_src,
- int i_x_offset, int i_y_offset )
+ int i_x_offset, int i_y_offset, int i_alpha )
{
int i_width, i_height;
- i_width = __MIN( p_filter->fmt_out.video.i_visible_width - i_x_offset,
- p_filter->fmt_in.video.i_visible_width );
+ i_width = __MIN((int)p_filter->fmt_out.video.i_visible_width - i_x_offset,
+ (int)p_filter->fmt_in.video.i_visible_width);
- i_height = __MIN( p_filter->fmt_out.video.i_visible_height - i_y_offset,
- p_filter->fmt_in.video.i_visible_height );
+ i_height = __MIN((int)p_filter->fmt_out.video.i_visible_height -i_y_offset,
+ (int)p_filter->fmt_in.video.i_visible_height);
if( i_width <= 0 || i_height <= 0 ) return;
p_filter->fmt_out.video.i_chroma == VLC_FOURCC('Y','V','1','2') ) )
{
BlendI420( p_filter, p_dst, p_dst_orig, p_src,
- i_x_offset, i_y_offset, i_width, i_height );
+ i_x_offset, i_y_offset, i_width, i_height, i_alpha );
return;
}
if( p_filter->fmt_in.video.i_chroma == VLC_FOURCC('Y','U','V','A') &&
p_filter->fmt_out.video.i_chroma == VLC_FOURCC('Y','U','Y','2') )
{
BlendYUY2( p_filter, p_dst, p_dst_orig, p_src,
- i_x_offset, i_y_offset, i_width, i_height );
+ i_x_offset, i_y_offset, i_width, i_height, i_alpha );
return;
}
if( p_filter->fmt_in.video.i_chroma == VLC_FOURCC('Y','U','V','A') &&
p_filter->fmt_out.video.i_chroma == VLC_FOURCC('R','V','1','6') )
{
BlendR16( p_filter, p_dst, p_dst_orig, p_src,
- i_x_offset, i_y_offset, i_width, i_height );
+ i_x_offset, i_y_offset, i_width, i_height, i_alpha );
return;
}
if( p_filter->fmt_in.video.i_chroma == VLC_FOURCC('Y','U','V','A') &&
p_filter->fmt_out.video.i_chroma == VLC_FOURCC('R','V','3','2') ) )
{
BlendR24( p_filter, p_dst, p_dst_orig, p_src,
- i_x_offset, i_y_offset, i_width, i_height );
+ i_x_offset, i_y_offset, i_width, i_height, i_alpha );
return;
}
if( p_filter->fmt_in.video.i_chroma == VLC_FOURCC('Y','U','V','P') &&
p_filter->fmt_out.video.i_chroma == VLC_FOURCC('Y','V','1','2') ) )
{
BlendPalI420( p_filter, p_dst, p_dst_orig, p_src,
- i_x_offset, i_y_offset, i_width, i_height );
+ i_x_offset, i_y_offset, i_width, i_height, i_alpha );
return;
}
if( p_filter->fmt_in.video.i_chroma == VLC_FOURCC('Y','U','V','P') &&
p_filter->fmt_out.video.i_chroma == VLC_FOURCC('Y','U','Y','2') )
{
BlendPalYUY2( p_filter, p_dst, p_dst_orig, p_src,
- i_x_offset, i_y_offset, i_width, i_height );
+ i_x_offset, i_y_offset, i_width, i_height, i_alpha );
return;
}
if( p_filter->fmt_in.video.i_chroma == VLC_FOURCC('Y','U','V','P') &&
p_filter->fmt_out.video.i_chroma == VLC_FOURCC('R','V','3','2') ) )
{
BlendPalRV( p_filter, p_dst, p_dst_orig, p_src,
- i_x_offset, i_y_offset, i_width, i_height );
+ i_x_offset, i_y_offset, i_width, i_height, i_alpha );
return;
}
static void BlendI420( filter_t *p_filter, picture_t *p_dst,
picture_t *p_dst_orig, picture_t *p_src,
int i_x_offset, int i_y_offset,
- int i_width, int i_height )
+ int i_width, int i_height, int i_alpha )
{
int i_src1_pitch, i_src2_pitch, i_dst_pitch;
uint8_t *p_src1_y, *p_src2_y, *p_dst_y;
uint8_t *p_src1_u, *p_src2_u, *p_dst_u;
uint8_t *p_src1_v, *p_src2_v, *p_dst_v;
uint8_t *p_trans;
- int i_x, i_y;
+ int i_x, i_y, i_trans;
vlc_bool_t b_even_scanline = i_y_offset % 2;
i_dst_pitch = p_dst->p[Y_PLANE].i_pitch;
/* Draw until we reach the end of the line */
for( i_x = 0; i_x < i_width; i_x++ )
{
- if( !p_trans[i_x] )
+ i_trans = ( p_trans[i_x] * i_alpha ) / 255;
+ if( !i_trans )
{
/* Completely transparent. Don't change pixel */
continue;
}
- else if( p_trans[i_x] == MAX_TRANS )
+ else if( i_trans == MAX_TRANS )
{
/* Completely opaque. Completely overwrite underlying pixel */
p_dst_y[i_x] = p_src2_y[i_x];
}
/* Blending */
- p_dst_y[i_x] = ( (uint16_t)p_src2_y[i_x] * p_trans[i_x] +
- (uint16_t)p_src1_y[i_x] * (MAX_TRANS - p_trans[i_x]) )
+ p_dst_y[i_x] = ( (uint16_t)p_src2_y[i_x] * i_trans +
+ (uint16_t)p_src1_y[i_x] * (MAX_TRANS - i_trans) )
>> TRANS_BITS;
if( b_even_scanline && i_x % 2 == 0 )
{
- p_dst_u[i_x/2] = ( (uint16_t)p_src2_u[i_x] * p_trans[i_x] +
- (uint16_t)p_src1_u[i_x/2] * (MAX_TRANS - p_trans[i_x]) )
+ p_dst_u[i_x/2] = ( (uint16_t)p_src2_u[i_x] * i_trans +
+ (uint16_t)p_src1_u[i_x/2] * (MAX_TRANS - i_trans) )
>> TRANS_BITS;
- p_dst_v[i_x/2] = ( (uint16_t)p_src2_v[i_x] * p_trans[i_x] +
- (uint16_t)p_src1_v[i_x/2] * (MAX_TRANS - p_trans[i_x]) )
+ p_dst_v[i_x/2] = ( (uint16_t)p_src2_v[i_x] * i_trans +
+ (uint16_t)p_src1_v[i_x/2] * (MAX_TRANS - i_trans) )
>> TRANS_BITS;
}
}
static void BlendR16( filter_t *p_filter, picture_t *p_dst_pic,
picture_t *p_dst_orig, picture_t *p_src,
int i_x_offset, int i_y_offset,
- int i_width, int i_height )
+ int i_width, int i_height, int i_alpha )
{
int i_src1_pitch, i_src2_pitch, i_dst_pitch;
uint8_t *p_dst, *p_src1, *p_src2_y;
static void BlendR24( filter_t *p_filter, picture_t *p_dst_pic,
picture_t *p_dst_orig, picture_t *p_src,
int i_x_offset, int i_y_offset,
- int i_width, int i_height )
+ int i_width, int i_height, int i_alpha )
{
int i_src1_pitch, i_src2_pitch, i_dst_pitch;
uint8_t *p_dst, *p_src1, *p_src2_y;
uint8_t *p_src2_u, *p_src2_v;
uint8_t *p_trans;
- int i_x, i_y, i_pix_pitch;
+ int i_x, i_y, i_pix_pitch, i_trans;
int r, g, b;
i_pix_pitch = p_dst_pic->p->i_pixel_pitch;
/* Draw until we reach the end of the line */
for( i_x = 0; i_x < i_width; i_x++ )
{
- if( !p_trans[i_x] )
+ i_trans = ( p_trans[i_x] * i_alpha ) / 255;
+ if( !i_trans )
{
/* Completely transparent. Don't change pixel */
continue;
}
- else if( p_trans[i_x] == MAX_TRANS )
+ else if( i_trans == MAX_TRANS )
{
/* Completely opaque. Completely overwrite underlying pixel */
yuv_to_rgb( &r, &g, &b,
yuv_to_rgb( &r, &g, &b,
p_src2_y[i_x], p_src2_u[i_x], p_src2_v[i_x] );
- p_dst[i_x * i_pix_pitch] = ( r * p_trans[i_x] +
+ p_dst[i_x * i_pix_pitch] = ( r * i_trans +
(uint16_t)p_src1[i_x * i_pix_pitch] *
- (MAX_TRANS - p_trans[i_x]) ) >> TRANS_BITS;
- p_dst[i_x * i_pix_pitch + 1] = ( g * p_trans[i_x] +
+ (MAX_TRANS - i_trans) ) >> TRANS_BITS;
+ p_dst[i_x * i_pix_pitch + 1] = ( g * i_trans +
(uint16_t)p_src1[i_x * i_pix_pitch + 1] *
- (MAX_TRANS - p_trans[i_x]) ) >> TRANS_BITS;
- p_dst[i_x * i_pix_pitch + 2] = ( b * p_trans[i_x] +
+ (MAX_TRANS - i_trans) ) >> TRANS_BITS;
+ p_dst[i_x * i_pix_pitch + 2] = ( b * i_trans +
(uint16_t)p_src1[i_x * i_pix_pitch + 2] *
- (MAX_TRANS - p_trans[i_x]) ) >> TRANS_BITS;
+ (MAX_TRANS - i_trans) ) >> TRANS_BITS;
}
}
static void BlendYUY2( filter_t *p_filter, picture_t *p_dst_pic,
picture_t *p_dst_orig, picture_t *p_src,
int i_x_offset, int i_y_offset,
- int i_width, int i_height )
+ int i_width, int i_height, int i_alpha )
{
int i_src1_pitch, i_src2_pitch, i_dst_pitch;
uint8_t *p_dst, *p_src1, *p_src2_y;
uint8_t *p_src2_u, *p_src2_v;
uint8_t *p_trans;
- int i_x, i_y, i_pix_pitch;
+ int i_x, i_y, i_pix_pitch, i_trans;
+ vlc_bool_t b_even = !((i_x_offset + p_filter->fmt_out.video.i_x_offset)%2);
i_pix_pitch = 2;
i_dst_pitch = p_dst_pic->p->i_pitch;
p_filter->fmt_in.video.i_x_offset +
p_src->p[A_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset;
+ i_width = (i_width >> 1) << 1; /* Needs to be a multiple of 2 */
+
#define MAX_TRANS 255
#define TRANS_BITS 8
p_src2_v += i_src2_pitch )
{
/* Draw until we reach the end of the line */
- for( i_x = 0; i_x < i_width; i_x += 2 )
+ for( i_x = 0; i_x < i_width; i_x++, b_even = !b_even )
{
- if( !p_trans[i_x] )
+ i_trans = ( p_trans[i_x] * i_alpha ) / 255;
+ if( !i_trans )
{
/* Completely transparent. Don't change pixel */
}
- else if( p_trans[i_x] == MAX_TRANS )
+ else if( i_trans == MAX_TRANS )
{
/* Completely opaque. Completely overwrite underlying pixel */
p_dst[i_x * 2] = p_src2_y[i_x];
- p_dst[i_x * 2 + 1] = p_src2_u[i_x];
- p_dst[i_x * 2 + 3] = p_src2_v[i_x];
- }
- else
- {
- /* Blending */
- p_dst[i_x * 2] = ( (uint16_t)p_src2_y[i_x] * p_trans[i_x] +
- (uint16_t)p_src1[i_x * 2] *
- (MAX_TRANS - p_trans[i_x]) ) >> TRANS_BITS;
- p_dst[i_x * 2 + 1] = ( (uint16_t)p_src2_u[i_x] * p_trans[i_x] +
- (uint16_t)p_src1[i_x * 2 + 1] *
- (MAX_TRANS - p_trans[i_x]) ) >> TRANS_BITS;
- p_dst[i_x * 2 + 3] = ( (uint16_t)p_src2_v[i_x] * p_trans[i_x] +
- (uint16_t)p_src1[i_x * 2 + 3] *
- (MAX_TRANS - p_trans[i_x]) ) >> TRANS_BITS;
- }
- if( !p_trans[i_x+1] )
- {
- /* Completely transparent. Don't change pixel */
- }
- else if( p_trans[i_x+1] == MAX_TRANS )
- {
- /* Completely opaque. Completely overwrite underlying pixel */
- p_dst[i_x * 2 + 2] = p_src2_y[i_x + 1];
+ if( b_even )
+ {
+ p_dst[i_x * 2 + 1] = p_src2_u[i_x];
+ p_dst[i_x * 2 + 3] = p_src2_v[i_x];
+ }
}
else
{
/* Blending */
- p_dst[i_x * 2 + 2] = ( (uint16_t)p_src2_y[i_x+1] *
- p_trans[i_x+1] + (uint16_t)p_src1[i_x * 2 + 2] *
- (MAX_TRANS - p_trans[i_x+1]) ) >> TRANS_BITS;
+ p_dst[i_x * 2] = ( (uint16_t)p_src2_y[i_x] * i_trans +
+ (uint16_t)p_src1[i_x * 2] * (MAX_TRANS - i_trans) )
+ >> TRANS_BITS;
+
+ if( b_even )
+ {
+ p_dst[i_x * 2 + 1] = ( (uint16_t)p_src2_u[i_x] * i_trans +
+ (uint16_t)p_src1[i_x * 2 + 1] * (MAX_TRANS - i_trans) )
+ >> TRANS_BITS;
+ p_dst[i_x * 2 + 3] = ( (uint16_t)p_src2_v[i_x] * i_trans +
+ (uint16_t)p_src1[i_x * 2 + 3] * (MAX_TRANS - i_trans) )
+ >> TRANS_BITS;
+ }
}
}
}
static void BlendPalI420( filter_t *p_filter, picture_t *p_dst,
picture_t *p_dst_orig, picture_t *p_src,
int i_x_offset, int i_y_offset,
- int i_width, int i_height )
+ int i_width, int i_height, int i_alpha )
{
int i_src1_pitch, i_src2_pitch, i_dst_pitch;
uint8_t *p_src1_y, *p_src2, *p_dst_y;
uint8_t *p_src1_u, *p_dst_u;
uint8_t *p_src1_v, *p_dst_v;
- int i_x, i_y;
+ int i_x, i_y, i_trans;
vlc_bool_t b_even_scanline = i_y_offset % 2;
i_dst_pitch = p_dst->p[Y_PLANE].i_pitch;
/* Draw until we reach the end of the line */
for( i_x = 0; i_x < i_width; i_x++ )
{
- if( !p_pal[p_trans[i_x]][3] )
+ i_trans = ( p_pal[p_trans[i_x]][3] * i_alpha ) / 255;
+ if( !i_trans )
{
/* Completely transparent. Don't change pixel */
continue;
}
- else if( p_pal[p_trans[i_x]][3] == MAX_TRANS )
+ else if( i_trans == MAX_TRANS )
{
/* Completely opaque. Completely overwrite underlying pixel */
p_dst_y[i_x] = p_pal[p_src2[i_x]][0];
}
/* Blending */
- p_dst_y[i_x] = ( (uint16_t)p_pal[p_src2[i_x]][0] *
- p_pal[p_trans[i_x]][3] + (uint16_t)p_src1_y[i_x] *
- (MAX_TRANS - p_pal[p_trans[i_x]][3]) ) >> TRANS_BITS;
+ p_dst_y[i_x] = ( (uint16_t)p_pal[p_src2[i_x]][0] * i_trans +
+ (uint16_t)p_src1_y[i_x] * (MAX_TRANS - i_trans) )
+ >> TRANS_BITS;
if( b_even_scanline && i_x % 2 == 0 )
{
- p_dst_u[i_x/2] = ( (uint16_t)p_pal[p_src2[i_x]][1] *
- p_pal[p_trans[i_x]][3] + (uint16_t)p_src1_u[i_x/2] *
- (MAX_TRANS - p_pal[p_trans[i_x]][3]) ) >> TRANS_BITS;
- p_dst_v[i_x/2] = ( (uint16_t)p_pal[p_src2[i_x]][2] *
- p_pal[p_trans[i_x]][3] + (uint16_t)p_src1_v[i_x/2] *
- (MAX_TRANS - p_pal[p_trans[i_x]][3]) ) >> TRANS_BITS;
+ p_dst_u[i_x/2] = ( (uint16_t)p_pal[p_src2[i_x]][1] * i_trans +
+ (uint16_t)p_src1_u[i_x/2] * (MAX_TRANS - i_trans) )
+ >> TRANS_BITS;
+ p_dst_v[i_x/2] = ( (uint16_t)p_pal[p_src2[i_x]][2] * i_trans +
+ (uint16_t)p_src1_v[i_x/2] * (MAX_TRANS - i_trans) )
+ >> TRANS_BITS;
}
}
}
static void BlendPalYUY2( filter_t *p_filter, picture_t *p_dst_pic,
picture_t *p_dst_orig, picture_t *p_src,
int i_x_offset, int i_y_offset,
- int i_width, int i_height )
+ int i_width, int i_height, int i_alpha )
{
int i_src1_pitch, i_src2_pitch, i_dst_pitch;
uint8_t *p_src1, *p_src2, *p_dst;
- int i_x, i_y, i_pix_pitch;
+ int i_x, i_y, i_pix_pitch, i_trans;
+ vlc_bool_t b_even = !((i_x_offset + p_filter->fmt_out.video.i_x_offset)%2);
i_pix_pitch = 2;
i_dst_pitch = p_dst_pic->p->i_pitch;
p_src2 = p_src->p->p_pixels + p_filter->fmt_in.video.i_x_offset +
i_src2_pitch * p_filter->fmt_in.video.i_y_offset;
+ i_width = (i_width >> 1) << 1; /* Needs to be a multiple of 2 */
+
#define MAX_TRANS 255
#define TRANS_BITS 8
#define p_trans p_src2
p_dst += i_dst_pitch, p_src1 += i_src1_pitch, p_src2 += i_src2_pitch )
{
/* Draw until we reach the end of the line */
- for( i_x = 0; i_x < i_width; i_x += 2 )
+ for( i_x = 0; i_x < i_width; i_x++, b_even = !b_even )
{
- if( !p_pal[p_trans[i_x]][3] )
+ i_trans = ( p_pal[p_trans[i_x]][3] * i_alpha ) / 255;
+ if( !i_trans )
{
/* Completely transparent. Don't change pixel */
}
- else if( p_pal[p_trans[i_x]][3] == MAX_TRANS )
+ else if( i_trans == MAX_TRANS )
{
/* Completely opaque. Completely overwrite underlying pixel */
p_dst[i_x * 2] = p_pal[p_src2[i_x]][0];
- p_dst[i_x * 2 + 1] = p_pal[p_src2[i_x]][1];
- p_dst[i_x * 2 + 3] = p_pal[p_src2[i_x]][2];
+
+ if( b_even )
+ {
+ p_dst[i_x * 2 + 1] = p_pal[p_src2[i_x]][1];
+ p_dst[i_x * 2 + 3] = p_pal[p_src2[i_x]][2];
+ }
}
else
{
/* Blending */
p_dst[i_x * 2] = ( (uint16_t)p_pal[p_src2[i_x]][0] *
- p_pal[p_trans[i_x]][3] + (uint16_t)p_src1[i_x * 2] *
- (MAX_TRANS - p_pal[p_trans[i_x]][3]) ) >> TRANS_BITS;
- p_dst[i_x * 2 + 1] = ( (uint16_t)p_pal[p_src2[i_x]][1] *
- p_pal[p_trans[i_x]][3] + (uint16_t)p_src1[i_x * 2 + 1] *
- (MAX_TRANS - p_pal[p_trans[i_x]][3]) ) >> TRANS_BITS;
- p_dst[i_x * 2 + 3] = ( (uint16_t)p_pal[p_src2[i_x]][2] *
- p_pal[p_trans[i_x]][3] + (uint16_t)p_src1[i_x * 2 + 3] *
- (MAX_TRANS - p_pal[p_trans[i_x]][3]) ) >> TRANS_BITS;
- }
+ i_trans + (uint16_t)p_src1[i_x * 2] *
+ (MAX_TRANS - i_trans) ) >> TRANS_BITS;
- if( !p_pal[p_trans[i_x+1]][3] )
- {
- /* Completely transparent. Don't change pixel */
- }
- else if( p_pal[p_trans[i_x+1]][3] == MAX_TRANS )
- {
- /* Completely opaque. Completely overwrite underlying pixel */
- p_dst[i_x * 2 + 2] = p_pal[p_src2[i_x + 1]][0];
- }
- else
- {
- /* Blending */
- p_dst[i_x * 2 + 2] = ( (uint16_t)p_pal[p_src2[i_x+1]][0] *
- p_pal[p_trans[i_x+1]][3] + (uint16_t)p_src1[i_x * 2 + 2] *
- (MAX_TRANS - p_pal[p_trans[i_x+1]][3]) ) >> TRANS_BITS;
+ if( b_even )
+ {
+ p_dst[i_x * 2 + 1] = ( (uint16_t)p_pal[p_src2[i_x]][1] *
+ i_trans + (uint16_t)p_src1[i_x * 2 + 1] *
+ (MAX_TRANS - i_trans) ) >> TRANS_BITS;
+ p_dst[i_x * 2 + 3] = ( (uint16_t)p_pal[p_src2[i_x]][2] *
+ i_trans + (uint16_t)p_src1[i_x * 2 + 3] *
+ (MAX_TRANS - i_trans) ) >> TRANS_BITS;
+ }
}
}
}
static void BlendPalRV( filter_t *p_filter, picture_t *p_dst_pic,
picture_t *p_dst_orig, picture_t *p_src,
int i_x_offset, int i_y_offset,
- int i_width, int i_height )
+ int i_width, int i_height, int i_alpha )
{
int i_src1_pitch, i_src2_pitch, i_dst_pitch;
uint8_t *p_src1, *p_src2, *p_dst;
- int i_x, i_y, i_pix_pitch;
+ int i_x, i_y, i_pix_pitch, i_trans;
int r, g, b;
video_palette_t rgbpalette;
#define rgbpal rgbpalette.palette
/* Convert palette first */
- for( i_y = 0; //i_y < p_filter->fmt_in.video.p_palette->i_dummy &&
+ for( i_y = 0; i_y < p_filter->fmt_in.video.p_palette->i_entries &&
i_y < 256; i_y++ )
{
yuv_to_rgb( &r, &g, &b, p_pal[i_y][0], p_pal[i_y][1], p_pal[i_y][2] );
/* Draw until we reach the end of the line */
for( i_x = 0; i_x < i_width; i_x++ )
{
- if( !p_pal[p_trans[i_x]][3] )
+ i_trans = ( p_pal[p_trans[i_x]][3] * i_alpha ) / 255;
+ if( !i_trans )
{
/* Completely transparent. Don't change pixel */
continue;
}
- else if( p_pal[p_trans[i_x]][3] == MAX_TRANS ||
+ else if( i_trans == MAX_TRANS ||
p_filter->fmt_out.video.i_chroma ==
VLC_FOURCC('R','V','1','6') )
{
/* Blending */
p_dst[i_x * i_pix_pitch] = ( (uint16_t)rgbpal[p_src2[i_x]][0] *
- p_pal[p_trans[i_x]][3] +
- (uint16_t)p_src1[i_x * i_pix_pitch] *
- (MAX_TRANS - p_pal[p_trans[i_x]][3]) ) >> TRANS_BITS;
+ i_trans + (uint16_t)p_src1[i_x * i_pix_pitch] *
+ (MAX_TRANS - i_trans) ) >> TRANS_BITS;
p_dst[i_x * i_pix_pitch + 1] = ( (uint16_t)rgbpal[p_src2[i_x]][1] *
- p_pal[p_trans[i_x]][3] +
- (uint16_t)p_src1[i_x * i_pix_pitch + 1] *
- (MAX_TRANS - p_pal[p_trans[i_x]][3]) ) >> TRANS_BITS;
+ i_trans + (uint16_t)p_src1[i_x * i_pix_pitch + 1] *
+ (MAX_TRANS - i_trans) ) >> TRANS_BITS;
p_dst[i_x * i_pix_pitch + 2] = ( (uint16_t)rgbpal[p_src2[i_x]][2] *
- p_pal[p_trans[i_x]][3] +
- (uint16_t)p_src1[i_x * i_pix_pitch + 2] *
- (MAX_TRANS - p_pal[p_trans[i_x]][3]) ) >> TRANS_BITS;
+ i_trans + (uint16_t)p_src1[i_x * i_pix_pitch + 2] *
+ (MAX_TRANS - i_trans) ) >> TRANS_BITS;
}
}
projects / vlc / blobdiff