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/******************************************************************************
* recordMyDesktop *
*******************************************************************************
* *
* Copyright (C) 2006,2007,2008 John Varouhakis *
* *
* *
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *
* *
* *
* *
* For further information contact me at johnvarouhakis@gmail.com *
******************************************************************************/
#ifndef YUV_UTILS_H
#define YUV_UTILS_H 1
#include "rmdtypes.h"
#include "block_utils.h"
#include "rmdmacro.h"
// The macros work directly on this data (for performance reasons I
// suppose) so we keep this global
extern unsigned char Yr[256], Yg[256], Yb[256],
Ur[256], Ug[256], UbVr[256],
Vg[256], Vb[256];
//when adding the r values, we go beyond
//the (16 bit)range of the t_val variable, but we are performing
//32 bit arithmetics, so there's no problem.
//(This note is useless, I'm just adding because
//the addition of the A components in CALC_TVAL_AVG_32,
//now removed as uneeded, produced an overflow which would have caused
//color distrtion, where it one of the R,G or B components)
#define CALC_TVAL_AVG_16(t_val,datapi,datapi_next){\
register u_int16_t t1,t2,t3,t4;\
t1=*datapi;\
t2=*(datapi+1);\
t3=*datapi_next;\
t4=*(datapi_next+1);\
t_val=((((t1&__R16_MASK) +(t2&__R16_MASK)+\
(t3&__R16_MASK)+(t4&__R16_MASK))/4)&__R16_MASK)+\
((((t1&__G16_MASK) +(t2&__G16_MASK)+\
(t3&__G16_MASK)+(t4&__G16_MASK))/4)&__G16_MASK)+\
((((t1&__B16_MASK) +(t2&__B16_MASK)+\
(t3&__B16_MASK)+(t4&__B16_MASK))/4)&__B16_MASK);\
}
//the 4 most significant bytes represent the A component which
//does not need to be added on t_val, as it is always unused
#define CALC_TVAL_AVG_32(t_val,datapi,datapi_next){\
register unsigned int t1,t2,t3,t4;\
t1=*datapi;\
t2=*(datapi+1);\
t3=*datapi_next;\
t4=*(datapi_next+1);\
t_val=((((t1&0x00ff0000) +(t2&0x00ff0000)+\
(t3&0x00ff0000)+(t4&0x00ff0000))/4)&0x00ff0000)+\
((((t1&0x0000ff00) +(t2&0x0000ff00)+\
(t3&0x0000ff00)+(t4&0x0000ff00))/4)&0x0000ff00)+\
((((t1&0x000000ff) +(t2&0x000000ff)+\
(t3&0x000000ff)+(t4&0x000000ff))/4)&0x000000ff);\
}
#define UPDATE_Y_PLANE(data,\
x_tm,\
y_tm,\
height_tm,\
width_tm,\
yuv,\
__bit_depth__){ \
int k,i;\
register u_int##__bit_depth__##_t t_val;\
register unsigned char *yuv_y=yuv->y+x_tm+y_tm*yuv->y_width,\
*_yr=Yr,*_yg=Yg,*_yb=Yb;\
register u_int##__bit_depth__##_t *datapi=(u_int##__bit_depth__##_t *)data;\
for(k=0;k<height_tm;k++){\
for(i=0;i<width_tm;i++){\
t_val=*datapi;\
*yuv_y=_yr[__RVALUE_##__bit_depth__(t_val)] +\
_yg[__GVALUE_##__bit_depth__(t_val)] +\
_yb[__BVALUE_##__bit_depth__(t_val)] ;\
datapi++;\
yuv_y++;\
}\
yuv_y+=yuv->y_width-width_tm;\
}\
}
#define UPDATE_A_UV_PIXEL(yuv_u,\
yuv_v,\
t_val,\
datapi,\
datapi_next,\
_ur,_ug,_ubvr,_vg,_vb,\
__sampling_type,\
__bit_depth__)\
if(__sampling_type==__PXL_AVERAGE){\
CALC_TVAL_AVG_##__bit_depth__(t_val,datapi,datapi_next)\
}\
else\
t_val=*datapi;\
*yuv_u=\
_ur[__RVALUE_##__bit_depth__(t_val)] +\
_ug[__GVALUE_##__bit_depth__(t_val)] +\
_ubvr[__BVALUE_##__bit_depth__(t_val)];\
*yuv_v=\
_ubvr[__RVALUE_##__bit_depth__(t_val)] +\
_vg[__GVALUE_##__bit_depth__(t_val)] +\
_vb[__BVALUE_##__bit_depth__(t_val)];\
#define UPDATE_UV_PLANES(data,\
x_tm,\
y_tm,\
height_tm,\
width_tm,\
yuv,\
__sampling_type,\
__bit_depth__){ \
int k,i;\
register u_int##__bit_depth__##_t t_val;\
register unsigned char *yuv_u=yuv->u+x_tm/2+(y_tm*yuv->uv_width)/2,\
*yuv_v=yuv->v+x_tm/2+(y_tm*yuv->uv_width)/2,\
*_ur=Ur,*_ug=Ug,*_ubvr=UbVr,\
*_vg=Vg,*_vb=Vb;\
register u_int##__bit_depth__##_t *datapi=(u_int##__bit_depth__##_t *)data,\
*datapi_next=NULL;\
if(__sampling_type==__PXL_AVERAGE){\
datapi_next=datapi+width_tm;\
}\
for(k=0;k<height_tm;k+=2){\
for(i=0;i<width_tm;i+=2){\
UPDATE_A_UV_PIXEL( yuv_u,\
yuv_v,\
t_val,\
datapi,\
datapi_next,\
_ur,_ug,_ubvr,_vg,_vb,\
__sampling_type,\
__bit_depth__)\
datapi+=2;\
if(__sampling_type==__PXL_AVERAGE)\
datapi_next+=2;\
yuv_u++;\
yuv_v++;\
}\
yuv_u+=(yuv->y_width-width_tm)/2;\
yuv_v+=(yuv->y_width-width_tm)/2;\
datapi+=width_tm;\
if(__sampling_type==__PXL_AVERAGE)\
datapi_next+=width_tm;\
}\
}
#define UPDATE_YUV_BUFFER(yuv,\
data,\
data_back,\
x_tm,\
y_tm,\
width_tm,\
height_tm,\
__sampling_type,\
__color_depth){\
if(data_back==NULL){\
if((__color_depth==24)||(__color_depth==32)){\
UPDATE_Y_PLANE(data,x_tm,y_tm,height_tm,width_tm,yuv,32)\
UPDATE_UV_PLANES(data,x_tm,y_tm,height_tm,width_tm,\
yuv,__sampling_type,32)\
}\
else if(__color_depth==16){\
UPDATE_Y_PLANE(data,x_tm,y_tm,height_tm,width_tm,yuv,16)\
UPDATE_UV_PLANES(data,x_tm,y_tm,height_tm,width_tm,\
yuv,__sampling_type,16)\
}\
}\
else{\
if((__color_depth==24)||(__color_depth==32)){\
UPDATE_Y_PLANE_DBUF(data,data_back,x_tm,y_tm,\
height_tm,width_tm,yuv,32)\
UPDATE_UV_PLANES_DBUF(data,data_back,x_tm,y_tm,height_tm,width_tm,\
yuv,__sampling_type,32)\
}\
else if(__color_depth==16){\
UPDATE_Y_PLANE_DBUF(data,data_back,x_tm,y_tm,\
height_tm,width_tm,yuv,16)\
UPDATE_UV_PLANES_DBUF(data,data_back,x_tm,y_tm,height_tm,width_tm,\
yuv,__sampling_type,16)\
}\
}\
}
#define DUMMY_POINTER_TO_YUV(yuv,\
data_tm,\
x_tm,\
y_tm,\
width_tm,\
height_tm,\
x_offset,\
y_offset,\
no_pixel){\
int i,k,j=0;\
int x_2=x_tm/2,y_2=y_tm/2,y_width_2=(yuv)->y_width/2;\
for(k=y_offset;k<y_offset+height_tm;k++){\
for(i=x_offset;i<x_offset+width_tm;i++){\
j=k*16+i;\
if(data_tm[(j*4)]!=(no_pixel)){\
(yuv)->y[x_tm+(i-x_offset)+((k-y_offset)+y_tm)*(yuv)->y_width]=\
Yr[data_tm[(j*4)+__RBYTE]] +\
Yg[data_tm[(j*4)+__GBYTE]] +\
Yb[data_tm[(j*4)+__BBYTE]];\
if((k%2)&&(i%2)){\
yuv->u[x_2+(i-x_offset)/2+((k-y_offset)/2+y_2)*y_width_2]=\
Ur[data_tm[(k*width_tm+i)*4+__RBYTE]] +\
Ug[data_tm[(k*width_tm+i)*4+__GBYTE]] +\
UbVr[data_tm[(k*width_tm+i)*4+__BBYTE]];\
yuv->v[x_2+(i-x_offset)/2+((k-y_offset)/2+y_2)*y_width_2]=\
UbVr[data_tm[(k*width_tm+i)*4+__RBYTE]] +\
Vg[data_tm[(k*width_tm+i)*4+__GBYTE]] +\
Vb[data_tm[(k*width_tm+i)*4+__BBYTE]] ;\
}\
}\
}\
}\
}
/**
* Fill Yr,Yg,Yb,Ur,Ug.Ub,Vr,Vg,Vb arrays(globals) with values.
*/
void MakeMatrices(void);
#endif
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