diff options
Diffstat (limited to 'mpeglib/lib/util/render/dither/dither32mmx.cpp')
| -rw-r--r-- | mpeglib/lib/util/render/dither/dither32mmx.cpp | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/mpeglib/lib/util/render/dither/dither32mmx.cpp b/mpeglib/lib/util/render/dither/dither32mmx.cpp new file mode 100644 index 00000000..b5fa4807 --- /dev/null +++ b/mpeglib/lib/util/render/dither/dither32mmx.cpp @@ -0,0 +1,272 @@ +/* + MMX ditherer for 32 bit displays + Copyright (C) 2000 Martin Vogt + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU Library General Public License as published by + the Free Software Foundation. + + For more information look at the file COPYRIGHT in this package + + */ + + + +#include "ditherMMX.h" + +#include <iostream> + +using namespace std; + + +#ifndef INTEL + void dither32_mmx(unsigned char* lum, + unsigned char* cr, + unsigned char* cb, + unsigned char* out, + int rows, + int cols, + int mod) { + printf("urgs! dither32_mmx \n"); + printf("never should happen!\n"); + exit(0); +} + +#else + + +static unsigned long MMX32_80w[] = {0x00800080, 0x00800080}; +static unsigned long MMX32_10w[] = {0x00100010, 0x00100010}; +static unsigned long MMX32_00FFw[] = {0x00ff00ff, 0x00ff00ff}; +static unsigned long MMX32_FF00w[] = {0xff00ff00, 0xff00ff00}; +static unsigned short MMX32_Ycoeff[] = {0x4a, 0x4a, 0x4a, 0x4a}; +static unsigned short MMX32_Vredcoeff[] = {0x59, 0x59, 0x59, 0x59}; +static unsigned short MMX32_Ubluecoeff[] = {0x72, 0x72, 0x72, 0x72}; +static unsigned short MMX32_Ugrncoeff[] = {0xffea,0xffea,0xffea,0xffea}; +static unsigned short MMX32_Vgrncoeff[] = {0xffd2,0xffd2,0xffd2,0xffd2}; + +void dummy_dithermmx32() { + cout << "MMX32_10w:"<<MMX32_10w<<endl; + cout << "MMX32_80w:"<<MMX32_80w<<endl; + cout << "MMX32_Ubluecoeff:"<<MMX32_Ubluecoeff<<endl; + cout << "MMX32_Vredcoeff:"<<MMX32_Vredcoeff<<endl; + cout << "MMX32_Ugrncoeff:"<<MMX32_Ugrncoeff<<endl; + cout << "MMX32_Vgrncoeff:"<<MMX32_Vgrncoeff<<endl; + cout << "MMX32_Ycoeff:"<<MMX32_Ycoeff<<endl; + cout << "MMX32_00FFw:"<<MMX32_00FFw<<endl; + cout << "MMX32_FF00w:"<<MMX32_FF00w<<endl; +} + + +/** + This MMX assembler is my first assembler/MMX program ever. + Thus it maybe buggy. + Send patches to: + mvogt@rhrk.uni-kl.de + + After it worked fine I have "obfuscated" the code a bit to have + more parallism in the MMX units. This means I moved + initilisation around and delayed other instruction. + Performance measurement did not show that this brought any advantage + but in theory it _should_ be faster this way. + + The overall performanve gain to the C based dither was 30%-40%. + The MMX routine calculates 256bit=8RGB values in each cycle + (4 for row1 & 4 for row2) + + The red/green/blue.. coefficents are taken from the mpeg_play + player. They look nice, but I dont know if you can have + better values, to avoid integer rounding errors. + + + IMPORTANT: + ========== + + It is a requirement that the cr/cb/lum are 8 byte aligned and + the out are 16byte aligned or you will/may get segfaults + +*/ + +void dither32_mmx(unsigned char* lum, + unsigned char* cr, + unsigned char* cb, + unsigned char* out, + int rows, + int cols, + int mod) { + + + + unsigned int *row1; + unsigned int *row2; + row1 = (unsigned int *)out; // 32 bit target + + unsigned char* end = lum +cols*rows; // Pointer to the end + int x=cols; + row2=row1+cols+mod; // start of second row + mod=4*cols+8*mod; // increment for row1 in byte + + // buffer for asm function + int buf[6]; + buf[0]=(int)(lum+cols); // lum2 pointer + buf[1]=(int)end; + buf[2]=x; + buf[3]=mod; + buf[4]=0; //tmp0; + buf[5]=cols; + + + __asm__ __volatile__ ( + ".align 32\n" + "1:\n" + + // create Cr (result in mm1) + "movd (%0), %%mm1\n" // 0 0 0 0 v3 v2 v1 v0 + "pxor %%mm7,%%mm7\n" // 00 00 00 00 00 00 00 00 + "movd (%2), %%mm2\n" // 0 0 0 0 l3 l2 l1 l0 + "punpcklbw %%mm7,%%mm1\n" // 0 v3 0 v2 00 v1 00 v0 + "punpckldq %%mm1,%%mm1\n" // 00 v1 00 v0 00 v1 00 v0 + "psubw MMX32_80w,%%mm1\n" // mm1-128:r1 r1 r0 r0 r1 r1 r0 r0 + + // create Cr_g (result in mm0) + "movq %%mm1,%%mm0\n" // r1 r1 r0 r0 r1 r1 r0 r0 + "pmullw MMX32_Vgrncoeff,%%mm0\n" // red*-46dec=0.7136*64 + "pmullw MMX32_Vredcoeff,%%mm1\n" // red*89dec=1.4013*64 + "psraw $6, %%mm0\n" // red=red/64 + "psraw $6, %%mm1\n" // red=red/64 + + + // create L1 L2 (result in mm2,mm4) + // L2=lum2 + "movl %2,16%5\n" // store register in tmp0 + "movl %5,%2\n" // lum2->register + "movd (%2),%%mm3\n" // 0 0 0 0 L3 L2 L1 L0 + "movl 16%5,%2\n" // tmp0->register + "punpckldq %%mm3,%%mm2\n" // L3 L2 L1 L0 l3 l2 l1 l0 + "movq %%mm2,%%mm4\n" // L3 L2 L1 L0 l3 l2 l1 l0 + "pand MMX32_FF00w, %%mm2\n" // L3 0 L1 0 l3 0 l1 0 + "pand MMX32_00FFw, %%mm4\n" // 0 L2 0 L0 0 l2 0 l0 + "psrlw $8,%%mm2\n" // 0 L3 0 L1 0 l3 0 l1 + + + + // create R (result in mm6) + "movq %%mm2,%%mm5\n" // 0 L3 0 L1 0 l3 0 l1 + "movq %%mm4,%%mm6\n" // 0 L2 0 L0 0 l2 0 l0 + "paddsw %%mm1, %%mm5\n" // lum1+red:x R3 x R1 x r3 x r1 + "paddsw %%mm1, %%mm6\n" // lum1+red:x R2 x R0 x r2 x r0 + "packuswb %%mm5,%%mm5\n" // R3 R1 r3 r1 R3 R1 r3 r1 + "packuswb %%mm6,%%mm6\n" // R2 R0 r2 r0 R2 R0 r2 r0 + "pxor %%mm7,%%mm7\n" // 00 00 00 00 00 00 00 00 + "punpcklbw %%mm5,%%mm6\n" // R3 R2 R1 R0 r3 r2 r1 r0 + + + // create Cb (result in mm1) + "movd (%1), %%mm1\n" // 0 0 0 0 u3 u2 u1 u0 + "punpcklbw %%mm7,%%mm1\n" // 0 u3 0 u2 00 u1 00 u0 + "punpckldq %%mm1,%%mm1\n" // 00 u1 00 u0 00 u1 00 u0 + "psubw MMX32_80w,%%mm1\n" // mm1-128:u1 u1 u0 u0 u1 u1 u0 u0 + // create Cb_g (result in mm5) + "movq %%mm1,%%mm5\n" // u1 u1 u0 u0 u1 u1 u0 u0 + "pmullw MMX32_Ugrncoeff,%%mm5\n" // blue*-109dec=1.7129*64 + "pmullw MMX32_Ubluecoeff,%%mm1\n" // blue*114dec=1.78125*64 + "psraw $6, %%mm5\n" // blue=red/64 + "psraw $6, %%mm1\n" // blue=blue/64 + + + // create G (result in mm7) + "movq %%mm2,%%mm3\n" // 0 L3 0 L1 0 l3 0 l1 + "movq %%mm4,%%mm7\n" // 0 L2 0 L0 0 l2 0 l1 + "paddsw %%mm5, %%mm3\n" // lum1+Cb_g:x G3t x G1t x g3t x g1t + "paddsw %%mm5, %%mm7\n" // lum1+Cb_g:x G2t x G0t x g2t x g0t + "paddsw %%mm0, %%mm3\n" // lum1+Cr_g:x G3 x G1 x g3 x g1 + "paddsw %%mm0, %%mm7\n" // lum1+blue:x G2 x G0 x g2 x g0 + "packuswb %%mm3,%%mm3\n" // G3 G1 g3 g1 G3 G1 g3 g1 + "packuswb %%mm7,%%mm7\n" // G2 G0 g2 g0 G2 G0 g2 g0 + "punpcklbw %%mm3,%%mm7\n" // G3 G2 G1 G0 g3 g2 g1 g0 + + + // create B (result in mm5) + "movq %%mm2,%%mm3\n" // 0 L3 0 L1 0 l3 0 l1 + "movq %%mm4,%%mm5\n" // 0 L2 0 L0 0 l2 0 l1 + "paddsw %%mm1, %%mm3\n" // lum1+blue:x B3 x B1 x b3 x b1 + "paddsw %%mm1, %%mm5\n" // lum1+blue:x B2 x B0 x b2 x b0 + "packuswb %%mm3,%%mm3\n" // B3 B1 b3 b1 B3 B1 b3 b1 + "packuswb %%mm5,%%mm5\n" // B2 B0 b2 b0 B2 B0 b2 b0 + "punpcklbw %%mm3,%%mm5\n" // B3 B2 B1 B0 b3 b2 b1 b0 + + + // fill destination row1 (needed are mm6=Rr,mm7=Gg,mm5=Bb) + + "pxor %%mm2,%%mm2\n" // 0 0 0 0 0 0 0 0 + "pxor %%mm4,%%mm4\n" // 0 0 0 0 0 0 0 0 + "movq %%mm6,%%mm1\n" // R3 R2 R1 R0 r3 r2 r1 r0 + "movq %%mm5,%%mm3\n" // B3 B2 B1 B0 b3 b2 b1 b0 + // process lower lum + "punpcklbw %%mm4,%%mm1\n" // 0 r3 0 r2 0 r1 0 r0 + "punpcklbw %%mm4,%%mm3\n" // 0 b3 0 b2 0 b1 0 b0 + "movq %%mm1,%%mm2\n" // 0 r3 0 r2 0 r1 0 r0 + "movq %%mm3,%%mm0\n" // 0 b3 0 b2 0 b1 0 b0 + "punpcklwd %%mm1,%%mm3\n" // 0 r1 0 b1 0 r0 0 b0 + "punpckhwd %%mm2,%%mm0\n" // 0 r3 0 b3 0 r2 0 b2 + + "pxor %%mm2,%%mm2\n" // 0 0 0 0 0 0 0 0 + "movq %%mm7,%%mm1\n" // G3 G2 G1 G0 g3 g2 g1 g0 + "punpcklbw %%mm1,%%mm2\n" // g3 0 g2 0 g1 0 g0 0 + "punpcklwd %%mm4,%%mm2\n" // 0 0 g1 0 0 0 g0 0 + "por %%mm3, %%mm2\n" // 0 r1 g1 b1 0 r0 g0 b0 + "movq %%mm2,(%3)\n" // wrote out ! row1 + + "pxor %%mm2,%%mm2\n" // 0 0 0 0 0 0 0 0 + "punpcklbw %%mm1,%%mm4\n" // g3 0 g2 0 g1 0 g0 0 + "punpckhwd %%mm2,%%mm4\n" // 0 0 g3 0 0 0 g2 0 + "por %%mm0, %%mm4\n" // 0 r3 g3 b3 0 r2 g2 b2 + "movq %%mm4,8(%3)\n" // wrote out ! row1 + + // fill destination row2 (needed are mm6=Rr,mm7=Gg,mm5=Bb) + // this can be done "destructive" + "pxor %%mm2,%%mm2\n" // 0 0 0 0 0 0 0 0 + "punpckhbw %%mm2,%%mm6\n" // 0 R3 0 R2 0 R1 0 R0 + "punpckhbw %%mm1,%%mm5\n" // G3 B3 G2 B2 G1 B1 G0 B0 + "movq %%mm5,%%mm1\n" // G3 B3 G2 B2 G1 B1 G0 B0 + "punpcklwd %%mm6,%%mm1\n" // 0 R1 G1 B1 0 R0 G0 B0 + "movq %%mm1,(%4)\n" // wrote out ! row2 + "punpckhwd %%mm6,%%mm5\n" // 0 R3 G3 B3 0 R2 G2 B2 + "movq %%mm5,8(%4)\n" // wrote out ! row2 + + "addl $4,%2\n" // lum+4 + "addl $4,%5\n" // lum2+4 + "leal 16(%3),%3\n" // row1+16 + "leal 16(%4),%4\n" // row2+16 + "addl $2, %0\n" // cr+2 + "addl $2, %1\n" // cb+2 + + "subl $4,8%5\n" // x+4 x is buf[2] + "cmpl $0,8%5\n" + + "jne 1b\n" + "addl 20%5, %2\n" // lum += cols + "movl %2,16%5\n" // store register in tmp0 + "movl 20%5,%2\n" // cols->register + + "addl %2, %5\n" // lum2 += cols + "addl 12%5, %3\n" // row1+= mod is buf[0] + "addl 12%5, %4\n" // row2+= mod is buf[0] + + "movl %2, 8%5\n" // x=cols + "movl 16%5,%2\n" // store tmp0 in register + + "cmpl 4%5, %2\n" // buf[1] is end + "jl 1b\n" + "emms\n" + : + : "r" (cr), "r"(cb),"r"(lum), + "r"(row1),"r"(row2),"m"(buf[0]) + ); + + + +} + + +#endif |