mirror of https://github.com/mpv-player/mpv
118 lines
3.5 KiB
C
118 lines
3.5 KiB
C
// Generic alpha renderers for all YUV modes and RGB depths.
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// These are "reference implementations", should be optimized later (MMX, etc)
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#include "osd.h"
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void vo_draw_alpha_yv12(int w,int h, unsigned char* src, unsigned char *srca, int srcstride, unsigned char* dstbase,int dststride){
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int y;
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for(y=0;y<h;y++){
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register int x;
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for(x=0;x<w;x++){
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if(srca[x]) dstbase[x]=((dstbase[x]*srca[x])>>8)+src[x];
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}
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src+=srcstride;
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srca+=srcstride;
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dstbase+=dststride;
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}
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return;
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}
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void vo_draw_alpha_yuy2(int w,int h, unsigned char* src, unsigned char *srca, int srcstride, unsigned char* dstbase,int dststride){
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int y;
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for(y=0;y<h;y++){
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register int x;
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for(x=0;x<w;x++){
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if(srca[x]) dstbase[2*x]=((dstbase[2*x]*srca[x])>>8)+src[x];
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}
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src+=srcstride;
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srca+=srcstride;
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dstbase+=dststride;
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}
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return;
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}
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void vo_draw_alpha_rgb24(int w,int h, unsigned char* src, unsigned char *srca, int srcstride, unsigned char* dstbase,int dststride){
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int y;
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for(y=0;y<h;y++){
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register unsigned char *dst = dstbase;
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register int x;
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for(x=0;x<w;x++){
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if(srca[x]){
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dst[0]=((dst[0]*srca[x])>>8)+src[x];
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dst[1]=((dst[1]*srca[x])>>8)+src[x];
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dst[2]=((dst[2]*srca[x])>>8)+src[x];
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}
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dst+=3; // 24bpp
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}
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src+=srcstride;
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srca+=srcstride;
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dstbase+=dststride;
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}
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return;
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}
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void vo_draw_alpha_rgb32(int w,int h, unsigned char* src, unsigned char *srca, int srcstride, unsigned char* dstbase,int dststride){
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int y;
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for(y=0;y<h;y++){
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register int x;
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for(x=0;x<w;x++){
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if(srca[x]){
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dstbase[4*x+0]=((dstbase[4*x+0]*srca[x])>>8)+src[x];
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dstbase[4*x+1]=((dstbase[4*x+1]*srca[x])>>8)+src[x];
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dstbase[4*x+2]=((dstbase[4*x+2]*srca[x])>>8)+src[x];
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}
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}
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src+=srcstride;
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srca+=srcstride;
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dstbase+=dststride;
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}
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return;
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}
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void vo_draw_alpha_rgb15(int w,int h, unsigned char* src, unsigned char *srca, int srcstride, unsigned char* dstbase,int dststride){
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int y;
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for(y=0;y<h;y++){
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register unsigned short *dst = (unsigned short*) dstbase;
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register int x;
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for(x=0;x<w;x++){
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if(srca[x]){
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unsigned char r=dst[x]&0x1F;
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unsigned char g=(dst[x]>>5)&0x1F;
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unsigned char b=(dst[x]>>10)&0x1F;
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r=(((r*srca[x])>>5)+src[x])>>3;
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g=(((g*srca[x])>>5)+src[x])>>3;
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b=(((b*srca[x])>>5)+src[x])>>3;
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dst[x]=(b<<10)|(g<<5)|r;
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}
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}
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src+=srcstride;
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srca+=srcstride;
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dstbase+=dststride;
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}
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return;
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}
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void vo_draw_alpha_rgb16(int w,int h, unsigned char* src, unsigned char *srca, int srcstride, unsigned char* dstbase,int dststride){
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int y;
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for(y=0;y<h;y++){
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register unsigned short *dst = (unsigned short*) dstbase;
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register int x;
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for(x=0;x<w;x++){
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if(srca[x]){
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unsigned char r=dst[x]&0x1F;
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unsigned char g=(dst[x]>>5)&0x3F;
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unsigned char b=(dst[x]>>11)&0x1F;
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r=(((r*srca[x])>>5)+src[x])>>3;
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g=(((g*srca[x])>>6)+src[x])>>2;
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b=(((b*srca[x])>>5)+src[x])>>3;
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dst[x]=(b<<11)|(g<<5)|r;
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}
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}
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src+=srcstride;
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srca+=srcstride;
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dstbase+=dststride;
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}
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return;
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}
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