mirror of
https://github.com/mpv-player/mpv
synced 2024-12-25 16:33:02 +00:00
ba8f720ce0
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@948 b3059339-0415-0410-9bf9-f77b7e298cf2
178 lines
4.7 KiB
C
178 lines
4.7 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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//#define FAST_OSD
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//#define FAST_OSD_TABLE
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#include "config.h"
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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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#ifdef FAST_OSD
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w=w>>1;
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#endif
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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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#ifdef FAST_OSD
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if(srca[2*x+0]) dstbase[2*x+0]=src[2*x+0];
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if(srca[2*x+1]) dstbase[2*x+1]=src[2*x+1];
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#else
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if(srca[x]) dstbase[x]=((dstbase[x]*srca[x])>>8)+src[x];
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#endif
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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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#ifdef FAST_OSD
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w=w>>1;
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#endif
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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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#ifdef FAST_OSD
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if(srca[2*x+0]) dstbase[4*x+0]=src[2*x+0];
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if(srca[2*x+1]) dstbase[4*x+2]=src[2*x+1];
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#else
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if(srca[x]) dstbase[2*x]=((dstbase[2*x]*srca[x])>>8)+src[x];
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#endif
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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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#ifdef FAST_OSD
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dst[0]=dst[1]=dst[2]=src[x];
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#else
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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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#endif
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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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#ifdef FAST_OSD
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dstbase[4*x+0]=dstbase[4*x+1]=dstbase[4*x+2]=src[x];
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#else
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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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#endif
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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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#ifdef FAST_OSD_TABLE
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static unsigned short fast_osd_15bpp_table[256];
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static unsigned short fast_osd_16bpp_table[256];
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#endif
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void vo_draw_alpha_init(){
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#ifdef FAST_OSD_TABLE
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int i;
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for(i=0;i<256;i++){
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fast_osd_15bpp_table[i]=((i>>3)<<10)|((i>>3)<<5)|(i>>3);
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fast_osd_16bpp_table[i]=((i>>3)<<11)|((i>>2)<<5)|(i>>3);
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}
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#endif
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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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#ifdef FAST_OSD
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#ifdef FAST_OSD_TABLE
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dst[x]=fast_osd_15bpp_table[src[x]];
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#else
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register unsigned int a=src[x]>>3;
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dst[x]=(a<<10)|(a<<5)|a;
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#endif
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#else
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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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#endif
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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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#ifdef FAST_OSD
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#ifdef FAST_OSD_TABLE
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dst[x]=fast_osd_16bpp_table[src[x]];
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#else
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dst[x]=((src[x]>>3)<<11)|((src[x]>>2)<<5)|(src[x]>>3);
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#endif
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#else
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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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#endif
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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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