/*****************************************************************************
* blend.c: alpha blend 2 pictures together
*****************************************************************************
- * Copyright (C) 2003 VideoLAN
+ * Copyright (C) 2003-2007 the VideoLAN team
* $Id$
*
- * Author: Gildas Bazin <gbazin@videolan.org>
+ * Authors: Gildas Bazin <gbazin@videolan.org>
+ * Antoine Cellerier <dionoea @t videolan dot 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
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <vlc/vlc.h>
-#include <vlc/decoder.h>
+#include <vlc_vout.h>
#include "vlc_filter.h"
/*****************************************************************************
static void CloseFilter( vlc_object_t * );
/* TODO i_alpha support for BlendR16 */
+/* YUVA */
static void Blend( filter_t *, picture_t *, picture_t *, picture_t *,
int, int, int );
static void BlendI420( filter_t *, picture_t *, picture_t *, picture_t *,
int, int, int, int, int );
static void BlendR24( filter_t *, picture_t *, picture_t *, picture_t *,
int, int, int, int, int );
-static void BlendYUY2( filter_t *, picture_t *, picture_t *, picture_t *,
- int, int, int, int, int );
+static void BlendYUVPacked( filter_t *, picture_t *, picture_t *, picture_t *,
+ int, int, int, int, int );
+
+/* YUVP */
static void BlendPalI420( filter_t *, picture_t *, picture_t *, picture_t *,
int, int, int, int, int );
-static void BlendPalYUY2( filter_t *, picture_t *, picture_t *, picture_t *,
- int, int, int, int, int );
+static void BlendPalYUVPacked( filter_t *, picture_t *, picture_t *, picture_t *,
+ int, int, int, int, int );
static void BlendPalRV( filter_t *, picture_t *, picture_t *, picture_t *,
int, int, int, int, int );
+/* RGBA */
+static void BlendRGBAI420( filter_t *, picture_t *, picture_t *, picture_t *,
+ int, int, int, int, int );
+static void BlendRGBAR24( filter_t *, picture_t *, picture_t *, picture_t *,
+ int, int, int, int, int );
+
/*****************************************************************************
* Module descriptor
*****************************************************************************/
/* Check if we can handle that format.
* We could try to use a chroma filter if we can't. */
- if( ( p_filter->fmt_in.video.i_chroma != VLC_FOURCC('Y','U','V','A') &&
- p_filter->fmt_in.video.i_chroma != VLC_FOURCC('Y','U','V','P') ) ||
- ( p_filter->fmt_out.video.i_chroma != VLC_FOURCC('I','4','2','0') &&
- p_filter->fmt_out.video.i_chroma != VLC_FOURCC('Y','U','Y','2') &&
- p_filter->fmt_out.video.i_chroma != VLC_FOURCC('Y','V','1','2') &&
- p_filter->fmt_out.video.i_chroma != VLC_FOURCC('R','V','1','6') &&
- p_filter->fmt_out.video.i_chroma != VLC_FOURCC('R','V','2','4') &&
- p_filter->fmt_out.video.i_chroma != VLC_FOURCC('R','V','3','2') ) )
+ int in_chroma = p_filter->fmt_in.video.i_chroma;
+ int out_chroma = p_filter->fmt_out.video.i_chroma;
+ if(
+ ( ( in_chroma != VLC_FOURCC('Y','U','V','A') &&
+ in_chroma != VLC_FOURCC('Y','U','V','P') ) ||
+ ( out_chroma != VLC_FOURCC('I','4','2','0') &&
+ out_chroma != VLC_FOURCC('Y','U','Y','2') &&
+ out_chroma != VLC_FOURCC('Y','V','1','2') &&
+ out_chroma != VLC_FOURCC('U','Y','V','Y') &&
+ out_chroma != VLC_FOURCC('Y','V','Y','U') &&
+ out_chroma != VLC_FOURCC('R','V','1','6') &&
+ out_chroma != VLC_FOURCC('R','V','2','4') &&
+ out_chroma != VLC_FOURCC('R','V','3','2') ) )
+ &&
+ ( ( in_chroma != VLC_FOURCC('R','G','B','A') ) ||
+ ( out_chroma != VLC_FOURCC('I','4','2','0') &&
+ out_chroma != VLC_FOURCC('Y','V','1','2') &&
+ out_chroma != VLC_FOURCC('R','V','2','4') &&
+ out_chroma != VLC_FOURCC('R','V','3','2' ) ) )
+ )
{
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
+/*****************************************************************************
+ * CloseFilter: clean up the filter
+ *****************************************************************************/
+static void CloseFilter( vlc_object_t *p_this )
+{
+ filter_t *p_filter = (filter_t*)p_this;
+ filter_sys_t *p_sys = p_filter->p_sys;
+
+ free( p_sys );
+}
+
/****************************************************************************
* Blend: the whole thing
****************************************************************************
if( i_width <= 0 || i_height <= 0 ) return;
- if( p_filter->fmt_in.video.i_chroma == VLC_FOURCC('Y','U','V','A') &&
- ( p_filter->fmt_out.video.i_chroma == VLC_FOURCC('I','4','2','0') ||
- 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_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') )
+ switch( p_filter->fmt_in.video.i_chroma )
{
- BlendYUY2( p_filter, p_dst, p_dst_orig, p_src,
- 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_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','2','4') ||
- 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_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('I','4','2','0') ||
- 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_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_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','1','6') ||
- p_filter->fmt_out.video.i_chroma == VLC_FOURCC('R','V','2','4') ||
- 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_alpha );
- return;
+ case VLC_FOURCC('Y','U','V','A'):
+ switch( p_filter->fmt_out.video.i_chroma )
+ {
+ case VLC_FOURCC('I','4','2','0'):
+ case 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_alpha );
+ return;
+ case VLC_FOURCC('Y','U','Y','2'):
+ case VLC_FOURCC('U','Y','V','Y'):
+ case VLC_FOURCC('Y','V','Y','U'):
+ BlendYUVPacked( p_filter, p_dst, p_dst_orig, p_src,
+ i_x_offset, i_y_offset,
+ i_width, i_height, i_alpha );
+ return;
+ case 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_alpha );
+ return;
+ case VLC_FOURCC('R','V','2','4'):
+ case 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_alpha );
+ return;
+ }
+ case VLC_FOURCC('Y','U','V','P'):
+ switch( p_filter->fmt_out.video.i_chroma )
+ {
+ case VLC_FOURCC('I','4','2','0'):
+ case 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_alpha );
+ return;
+ case VLC_FOURCC('Y','U','Y','2'):
+ case VLC_FOURCC('U','Y','V','Y'):
+ case VLC_FOURCC('Y','V','Y','U'):
+ BlendPalYUVPacked( p_filter, p_dst, p_dst_orig, p_src,
+ i_x_offset, i_y_offset,
+ i_width, i_height, i_alpha );
+ return;
+ case VLC_FOURCC('R','V','1','6'):
+ case VLC_FOURCC('R','V','2','4'):
+ case 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_alpha );
+ return;
+ }
+ case VLC_FOURCC('R','G','B','A'):
+ switch( p_filter->fmt_out.video.i_chroma )
+ {
+ case VLC_FOURCC('I','4','2','0'):
+ case VLC_FOURCC('Y','V','1','2'):
+ BlendRGBAI420( p_filter, p_dst, p_dst_orig, p_src,
+ i_x_offset, i_y_offset,
+ i_width, i_height, i_alpha );
+ return;
+ case VLC_FOURCC('R','V','2','4'):
+ case VLC_FOURCC('R','V','3','2'):
+ BlendRGBAR24( p_filter, p_dst, p_dst_orig, p_src,
+ i_x_offset, i_y_offset,
+ i_width, i_height, i_alpha );
+ return;
+ }
}
msg_Dbg( p_filter, "no matching alpha blending routine" );
}
+/***********************************************************************
+ * Utils
+ ***********************************************************************/
+static inline void yuv_to_rgb( int *r, int *g, int *b,
+ uint8_t y1, uint8_t u1, uint8_t v1 )
+{
+ /* macros used for YUV pixel conversions */
+# define SCALEBITS 10
+# define ONE_HALF (1 << (SCALEBITS - 1))
+# define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
+# define CLAMP( x ) (((x) > 255) ? 255 : ((x) < 0) ? 0 : (x));
+
+ int y, cb, cr, r_add, g_add, b_add;
+
+ cb = u1 - 128;
+ cr = v1 - 128;
+ r_add = FIX(1.40200*255.0/224.0) * cr + ONE_HALF;
+ g_add = - FIX(0.34414*255.0/224.0) * cb
+ - FIX(0.71414*255.0/224.0) * cr + ONE_HALF;
+ b_add = FIX(1.77200*255.0/224.0) * cb + ONE_HALF;
+ y = (y1 - 16) * FIX(255.0/219.0);
+ *r = CLAMP((y + r_add) >> SCALEBITS);
+ *g = CLAMP((y + g_add) >> SCALEBITS);
+ *b = CLAMP((y + b_add) >> SCALEBITS);
+}
+
+static inline void rgb_to_yuv( uint8_t *y, uint8_t *u, uint8_t *v,
+ int r, int g, int b )
+{
+ *y = ( ( ( 66 * r + 129 * g + 25 * b + 128 ) >> 8 ) + 16 );
+ *u = ( ( -38 * r - 74 * g + 112 * b + 128 ) >> 8 ) + 128 ;
+ *v = ( ( 112 * r - 94 * g - 18 * b + 128 ) >> 8 ) + 128 ;
+}
+
+/***********************************************************************
+ * YUVA
+ ***********************************************************************/
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,
return;
}
-static inline void yuv_to_rgb( int *r, int *g, int *b,
- uint8_t y1, uint8_t u1, uint8_t v1 )
-{
- /* macros used for YUV pixel conversions */
-# define SCALEBITS 10
-# define ONE_HALF (1 << (SCALEBITS - 1))
-# define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
-# define CLAMP( x ) (((x) > 255) ? 255 : ((x) < 0) ? 0 : (x));
-
- int y, cb, cr, r_add, g_add, b_add;
-
- cb = u1 - 128;
- cr = v1 - 128;
- r_add = FIX(1.40200*255.0/224.0) * cr + ONE_HALF;
- g_add = - FIX(0.34414*255.0/224.0) * cb
- - FIX(0.71414*255.0/224.0) * cr + ONE_HALF;
- b_add = FIX(1.77200*255.0/224.0) * cb + ONE_HALF;
- y = (y1 - 16) * FIX(255.0/219.0);
- *r = CLAMP((y + r_add) >> SCALEBITS);
- *g = CLAMP((y + g_add) >> SCALEBITS);
- *b = CLAMP((y + b_add) >> SCALEBITS);
-}
-
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,
return;
}
-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_alpha )
+static void BlendYUVPacked( 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_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, i_trans;
+ vlc_bool_t b_even = !((i_x_offset + p_filter->fmt_out.video.i_x_offset)%2);
+ int i_l_offset = 0, i_u_offset = 0, i_v_offset = 0;
+
+ if( p_filter->fmt_out.video.i_chroma == VLC_FOURCC('Y','U','Y','2') )
+ {
+ i_l_offset = 0;
+ i_u_offset = 1;
+ i_v_offset = 3;
+ }
+ else if( p_filter->fmt_out.video.i_chroma == VLC_FOURCC('U','Y','V','Y') )
+ {
+ i_l_offset = 1;
+ i_u_offset = 0;
+ i_v_offset = 2;
+ }
+ else if( p_filter->fmt_out.video.i_chroma == VLC_FOURCC('Y','V','Y','U') )
+ {
+ i_l_offset = 0;
+ i_u_offset = 3;
+ i_v_offset = 1;
+ }
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 )
{
i_trans = ( p_trans[i_x] * i_alpha ) / 255;
if( !i_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] * i_trans +
- (uint16_t)p_src1[i_x * 2] * (MAX_TRANS - i_trans) )
- >> TRANS_BITS;
- 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;
- }
+ p_dst[i_x * 2 + i_l_offset] = p_src2_y[i_x];
- i_trans = ( p_trans[i_x+1] * i_alpha ) / 255;
- if( !i_trans )
- {
- /* Completely transparent. Don't change pixel */
- }
- else if( i_trans == MAX_TRANS )
- {
- /* Completely opaque. Completely overwrite underlying pixel */
- p_dst[i_x * 2 + 2] = p_src2_y[i_x + 1];
+ if( b_even )
+ {
+ if( p_trans[i_x+1] > 0xaa )
+ {
+ p_dst[i_x * 2 + i_u_offset] = (p_src2_u[i_x]+p_src2_u[i_x+1])>>1;
+ p_dst[i_x * 2 + i_v_offset] = (p_src2_v[i_x]+p_src2_v[i_x+1])>>1;
+ }
+ else
+ {
+ p_dst[i_x * 2 + i_u_offset] = p_src2_u[i_x];
+ p_dst[i_x * 2 + i_v_offset] = p_src2_v[i_x];
+ }
+ }
}
else
{
/* Blending */
- p_dst[i_x * 2 + 2] = ( (uint16_t)p_src2_y[i_x+1] * i_trans +
- (uint16_t)p_src1[i_x * 2 + 2] * (MAX_TRANS - i_trans) )
+ p_dst[i_x * 2 + i_l_offset] = ( (uint16_t)p_src2_y[i_x] * i_trans +
+ (uint16_t)p_src1[i_x * 2 + i_l_offset] * (MAX_TRANS - i_trans) )
>> TRANS_BITS;
+
+ if( b_even )
+ {
+ uint16_t i_u = 0;
+ uint16_t i_v = 0;
+ if( p_trans[i_x+1] > 0xaa )
+ {
+ i_u = (p_src2_u[i_x]+p_src2_u[i_x+1])>>1;
+ i_v = (p_src2_v[i_x]+p_src2_v[i_x+1])>>1;
+ }
+ else
+ {
+ i_u = p_src2_u[i_x];
+ i_v = p_src2_v[i_x];
+ }
+ p_dst[i_x * 2 + i_u_offset] = ( (uint16_t)i_u * i_trans +
+ (uint16_t)p_src1[i_x * 2 + i_u_offset] * (MAX_TRANS - i_trans) )
+ >> TRANS_BITS;
+ p_dst[i_x * 2 + i_v_offset] = ( (uint16_t)i_v * i_trans +
+ (uint16_t)p_src1[i_x * 2 + i_v_offset] * (MAX_TRANS - i_trans) )
+ >> TRANS_BITS;
+ }
}
}
}
return;
}
+/***********************************************************************
+ * YUVP
+ ***********************************************************************/
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,
return;
}
-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_alpha )
+static void BlendPalYUVPacked( 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_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, i_trans;
+ vlc_bool_t b_even = !((i_x_offset + p_filter->fmt_out.video.i_x_offset)%2);
+ int i_l_offset = 0, i_u_offset = 0, i_v_offset = 0;
+
+ if( p_filter->fmt_out.video.i_chroma == VLC_FOURCC('Y','U','Y','2') )
+ {
+ i_l_offset = 0;
+ i_u_offset = 1;
+ i_v_offset = 3;
+ }
+ else if( p_filter->fmt_out.video.i_chroma == VLC_FOURCC('U','Y','V','Y') )
+ {
+ i_l_offset = 1;
+ i_u_offset = 0;
+ i_v_offset = 2;
+ }
+ else if( p_filter->fmt_out.video.i_chroma == VLC_FOURCC('Y','V','Y','U') )
+ {
+ i_l_offset = 0;
+ i_u_offset = 3;
+ i_v_offset = 1;
+ }
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 )
{
i_trans = ( p_pal[p_trans[i_x]][3] * i_alpha ) / 255;
if( !i_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];
- }
- else
- {
- /* Blending */
- p_dst[i_x * 2] = ( (uint16_t)p_pal[p_src2[i_x]][0] *
- i_trans + (uint16_t)p_src1[i_x * 2] *
- (MAX_TRANS - i_trans) ) >> TRANS_BITS;
- 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;
- }
+ p_dst[i_x * 2 + i_l_offset] = p_pal[p_src2[i_x]][0];
- i_trans = ( p_pal[p_trans[i_x+1]][3] * i_alpha ) / 255;
- if( !i_trans )
- {
- /* Completely transparent. Don't change pixel */
- }
- else if( i_trans == MAX_TRANS )
- {
- /* Completely opaque. Completely overwrite underlying pixel */
- p_dst[i_x * 2 + 2] = p_pal[p_src2[i_x + 1]][0];
+ if( b_even )
+ {
+ if( p_trans[i_x+1] > 0xaa )
+ {
+ p_dst[i_x * 2 + i_u_offset] = (p_pal[p_src2[i_x]][1] + p_pal[p_src2[i_x+1]][1]) >> 1;
+ p_dst[i_x * 2 + i_v_offset] = (p_pal[p_src2[i_x]][2] + p_pal[p_src2[i_x+1]][2]) >> 1;
+ }
+ else
+ {
+ p_dst[i_x * 2 + i_u_offset] = p_pal[p_src2[i_x]][1];
+ p_dst[i_x * 2 + i_v_offset] = p_pal[p_src2[i_x]][2];
+ }
+ }
}
else
{
/* Blending */
- p_dst[i_x * 2 + 2] = ( (uint16_t)p_pal[p_src2[i_x+1]][0] *
- i_trans + (uint16_t)p_src1[i_x * 2 + 2] *
+ p_dst[i_x * 2 + i_l_offset] = ( (uint16_t)p_pal[p_src2[i_x]][0] *
+ i_trans + (uint16_t)p_src1[i_x * 2 + i_l_offset] *
(MAX_TRANS - i_trans) ) >> TRANS_BITS;
+
+ if( b_even )
+ {
+ uint16_t i_u = 0;
+ uint16_t i_v = 0;
+ if( p_trans[i_x+1] > 0xaa )
+ {
+ i_u = (p_pal[p_src2[i_x]][1] + p_pal[p_src2[i_x+1]][1]) >> 1;
+ i_v = (p_pal[p_src2[i_x]][2] + p_pal[p_src2[i_x+1]][2]) >> 1;
+ }
+ else
+ {
+ i_u = p_pal[p_src2[i_x]][1];
+ i_v = p_pal[p_src2[i_x]][2];
+ }
+
+ p_dst[i_x * 2 + i_u_offset] = ( (uint16_t)i_u *
+ i_trans + (uint16_t)p_src1[i_x * 2 + i_u_offset] *
+ (MAX_TRANS - i_trans) ) >> TRANS_BITS;
+ p_dst[i_x * 2 + i_v_offset] = ( (uint16_t)i_v *
+ i_trans + (uint16_t)p_src1[i_x * 2 + i_v_offset] *
+ (MAX_TRANS - i_trans) ) >> TRANS_BITS;
+ }
}
}
}
return;
}
-/*****************************************************************************
- * CloseFilter: clean up the filter
- *****************************************************************************/
-static void CloseFilter( vlc_object_t *p_this )
+/***********************************************************************
+ * RGBA
+ ***********************************************************************/
+static void BlendRGBAI420( 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_alpha )
{
- filter_t *p_filter = (filter_t*)p_this;
- filter_sys_t *p_sys = p_filter->p_sys;
+ int i_src1_pitch, i_src2_pitch, i_dst_pitch, i_src_pix_pitch;
+ uint8_t *p_src1_y, *p_dst_y;
+ uint8_t *p_src1_u, *p_dst_u;
+ uint8_t *p_src1_v, *p_dst_v;
+ uint8_t *p_src2;
+ int i_x, i_y, i_trans;
+ uint8_t y, u, v;
- free( p_sys );
+ vlc_bool_t b_even_scanline = i_y_offset % 2;
+
+ i_dst_pitch = p_dst->p[Y_PLANE].i_pitch;
+ p_dst_y = p_dst->p[Y_PLANE].p_pixels + i_x_offset +
+ p_filter->fmt_out.video.i_x_offset +
+ p_dst->p[Y_PLANE].i_pitch *
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset );
+ p_dst_u = p_dst->p[U_PLANE].p_pixels + i_x_offset/2 +
+ p_filter->fmt_out.video.i_x_offset/2 +
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset ) / 2 *
+ p_dst->p[U_PLANE].i_pitch;
+ p_dst_v = p_dst->p[V_PLANE].p_pixels + i_x_offset/2 +
+ p_filter->fmt_out.video.i_x_offset/2 +
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset ) / 2 *
+ p_dst->p[V_PLANE].i_pitch;
+
+ i_src1_pitch = p_dst_orig->p[Y_PLANE].i_pitch;
+ p_src1_y = p_dst_orig->p[Y_PLANE].p_pixels + i_x_offset +
+ p_filter->fmt_out.video.i_x_offset +
+ p_dst_orig->p[Y_PLANE].i_pitch *
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset );
+ p_src1_u = p_dst_orig->p[U_PLANE].p_pixels + i_x_offset/2 +
+ p_filter->fmt_out.video.i_x_offset/2 +
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset ) / 2 *
+ p_dst_orig->p[U_PLANE].i_pitch;
+ p_src1_v = p_dst_orig->p[V_PLANE].p_pixels + i_x_offset/2 +
+ p_filter->fmt_out.video.i_x_offset/2 +
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset ) / 2 *
+ p_dst_orig->p[V_PLANE].i_pitch;
+
+ i_src_pix_pitch = p_src->p->i_pixel_pitch;
+ i_src2_pitch = p_src->p->i_pitch;
+ p_src2 = p_src->p->p_pixels +
+ p_filter->fmt_in.video.i_x_offset * i_src2_pitch +
+ p_src->p->i_pitch * p_filter->fmt_in.video.i_y_offset;
+
+
+#define MAX_TRANS 255
+#define TRANS_BITS 8
+
+ /* Draw until we reach the bottom of the subtitle */
+ for( i_y = 0; i_y < i_height; i_y++,
+ p_dst_y += i_dst_pitch, p_src1_y += i_src1_pitch,
+ p_dst_u += b_even_scanline ? i_dst_pitch/2 : 0,
+ p_src1_u += b_even_scanline ? i_src1_pitch/2 : 0,
+ p_dst_v += b_even_scanline ? i_dst_pitch/2 : 0,
+ p_src1_v += b_even_scanline ? i_src1_pitch/2 : 0,
+ p_src2 += i_src2_pitch )
+ {
+ b_even_scanline = !b_even_scanline;
+
+ /* Draw until we reach the end of the line */
+ for( i_x = 0; i_x < i_width; i_x++ )
+ {
+#define R ( p_src2[i_x * i_src_pix_pitch + 0] )
+#define G ( p_src2[i_x * i_src_pix_pitch + 1] )
+#define B ( p_src2[i_x * i_src_pix_pitch + 2] )
+ i_trans = ( p_src2[i_x * i_src_pix_pitch + 3] * i_alpha ) / 255;
+ if( !i_trans )
+ {
+ /* Completely transparent. Don't change pixel */
+ continue;
+ }
+ else if( i_trans == MAX_TRANS )
+ {
+ /* Completely opaque. Completely overwrite underlying pixel */
+ rgb_to_yuv( &y, &u, &v, R, G, B );
+ p_dst_y[i_x] = y;
+
+ if( b_even_scanline && i_x % 2 == 0 )
+ {
+ p_dst_u[i_x/2] = u;
+ p_dst_v[i_x/2] = v;
+ }
+ continue;
+ }
+
+ /* Blending */
+ rgb_to_yuv( &y, &u, &v, R, G, B );
+ p_dst_y[i_x] = ( (uint16_t)y * 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)u * i_trans +
+ (uint16_t)p_src1_u[i_x/2] * (MAX_TRANS - i_trans) )
+ >> TRANS_BITS;
+ p_dst_v[i_x/2] = ( (uint16_t)v * i_trans +
+ (uint16_t)p_src1_v[i_x/2] * (MAX_TRANS - i_trans) )
+ >> TRANS_BITS;
+ }
+#undef R
+#undef G
+#undef B
+ }
+ }
+
+#undef MAX_TRANS
+#undef TRANS_BITS
+
+ return;
+}
+
+static void BlendRGBAR24( 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_alpha )
+{
+ int i_src1_pitch, i_src2_pitch, i_dst_pitch;
+ uint8_t *p_dst, *p_src1, *p_src2;
+ int i_x, i_y, i_pix_pitch, i_trans, i_src_pix_pitch;
+
+ i_pix_pitch = p_dst_pic->p->i_pixel_pitch;
+ i_dst_pitch = p_dst_pic->p->i_pitch;
+ p_dst = p_dst_pic->p->p_pixels + i_x_offset * i_pix_pitch +
+ p_filter->fmt_out.video.i_x_offset * i_pix_pitch +
+ p_dst_pic->p->i_pitch *
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset );
+
+ i_src1_pitch = p_dst_orig->p->i_pitch;
+ p_src1 = p_dst_orig->p->p_pixels + i_x_offset * i_pix_pitch +
+ p_filter->fmt_out.video.i_x_offset * i_pix_pitch +
+ p_dst_orig->p->i_pitch *
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset );
+
+ i_src_pix_pitch = p_src->p->i_pixel_pitch;
+ i_src2_pitch = p_src->p->i_pitch;
+ p_src2 = p_src->p->p_pixels +
+ p_filter->fmt_in.video.i_x_offset * i_pix_pitch +
+ p_src->p->i_pitch * p_filter->fmt_in.video.i_y_offset;
+
+#define MAX_TRANS 255
+#define TRANS_BITS 8
+
+ /* Draw until we reach the bottom of the subtitle */
+ for( i_y = 0; i_y < i_height; i_y++,
+ 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++ )
+ {
+#define R ( p_src2[i_x * i_src_pix_pitch + 0] )
+#define G ( p_src2[i_x * i_src_pix_pitch + 1] )
+#define B ( p_src2[i_x * i_src_pix_pitch + 2] )
+ i_trans = ( p_src2[i_x * i_src_pix_pitch + 3] * i_alpha ) / 255;
+ if( !i_trans )
+ {
+ /* Completely transparent. Don't change pixel */
+ continue;
+ }
+ else if( i_trans == MAX_TRANS )
+ {
+ /* Completely opaque. Completely overwrite underlying pixel */
+ p_dst[i_x * i_pix_pitch + 0] = R;
+ p_dst[i_x * i_pix_pitch + 1] = G;
+ p_dst[i_x * i_pix_pitch + 2] = B;
+ continue;
+ }
+
+ /* Blending */
+ p_dst[i_x * i_pix_pitch + 0] = ( R * i_trans +
+ (uint16_t)p_src1[i_x * i_pix_pitch + 0] *
+ (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 - 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 - i_trans) ) >> TRANS_BITS;
+#undef R
+#undef G
+#undef B
+ }
+ }
+
+#undef MAX_TRANS
+#undef TRANS_BITS
+
+ return;
}
projects / vlc / blobdiff