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mpv/mp3lib/decode_MMX.c

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6.2 KiB
C
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/*
* this code comes under GPL
* This code was taken from http://www.mpg123.org
* See ChangeLog of mpg123-0.59s-pre.1 for detail
* Applied to mplayer by Nick Kurshev <nickols_k@mail.ru>
*
* Local ChangeLog:
* - Partial loops unrolling and removing MOVW insn from loops
*/
#include "config.h"
#include "mangle.h"
#define real float /* ugly - but only way */
extern short mp3lib_decwins[];
extern void (*dct64_MMX_func)(short*, short*, real*);
static unsigned long long attribute_used __attribute__((aligned(8))) null_one = 0x0000ffff0000ffffULL;
static unsigned long long attribute_used __attribute__((aligned(8))) one_null = 0xffff0000ffff0000ULL;
unsigned long __attribute__((aligned(16))) costab_mmx[] =
{
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1057128951,
1058664893,
1063675095,
1076102863,
1057655764,
1067924853,
1060439283,
};
int synth_1to1_MMX(real *bandPtr, int channel, short *samples)
{
static short buffs[2][2][0x110] __attribute__((aligned(8)));
static int bo = 1;
short *b0, (*buf)[0x110], *a, *b;
short* window;
int bo1, i = 8;
if (channel == 0) {
bo = (bo - 1) & 0xf;
buf = buffs[1];
} else {
samples++;
buf = buffs[0];
}
if (bo & 1) {
b0 = buf[1];
bo1 = bo + 1;
a = buf[0] + bo;
b = buf[1] + ((bo + 1) & 0xf);
} else {
b0 = buf[0];
bo1 = bo;
b = buf[0] + bo;
a = buf[1] + ((bo + 1) & 0xf);
}
dct64_MMX_func(a, b, bandPtr);
window = mp3lib_decwins + 16 - bo1;
//printf("DEBUG: channel %d, bo %d, off %d\n", channel, bo, 16 - bo1);
__asm __volatile(
ASMALIGN(4)
".L03:\n\t"
"movq (%%edx),%%mm0\n\t"
"movq 64(%%edx),%%mm4\n\t"
"pmaddwd (%%esi),%%mm0\n\t"
"pmaddwd 32(%%esi),%%mm4\n\t"
"movq 8(%%edx),%%mm1\n\t"
"movq 72(%%edx),%%mm5\n\t"
"pmaddwd 8(%%esi),%%mm1\n\t"
"pmaddwd 40(%%esi),%%mm5\n\t"
"movq 16(%%edx),%%mm2\n\t"
"movq 80(%%edx),%%mm6\n\t"
"pmaddwd 16(%%esi),%%mm2\n\t"
"pmaddwd 48(%%esi),%%mm6\n\t"
"movq 24(%%edx),%%mm3\n\t"
"movq 88(%%edx),%%mm7\n\t"
"pmaddwd 24(%%esi),%%mm3\n\t"
"pmaddwd 56(%%esi),%%mm7\n\t"
"paddd %%mm1,%%mm0\n\t"
"paddd %%mm5,%%mm4\n\t"
"paddd %%mm2,%%mm0\n\t"
"paddd %%mm6,%%mm4\n\t"
"paddd %%mm3,%%mm0\n\t"
"paddd %%mm7,%%mm4\n\t"
"movq %%mm0,%%mm1\n\t"
"movq %%mm4,%%mm5\n\t"
"psrlq $32,%%mm1\n\t"
"psrlq $32,%%mm5\n\t"
"paddd %%mm1,%%mm0\n\t"
"paddd %%mm5,%%mm4\n\t"
"psrad $13,%%mm0\n\t"
"psrad $13,%%mm4\n\t"
"packssdw %%mm0,%%mm0\n\t"
"packssdw %%mm4,%%mm4\n\t"
"movq (%%edi), %%mm1\n\t"
"punpckldq %%mm4, %%mm0\n\t"
"pand "MANGLE(one_null)", %%mm1\n\t"
"pand "MANGLE(null_one)", %%mm0\n\t"
"por %%mm0, %%mm1\n\t"
"movq %%mm1,(%%edi)\n\t"
"add $64,%%esi\n\t"
"add $128,%%edx\n\t"
"add $8,%%edi\n\t"
"decl %%ecx\n\t"
"jnz .L03\n\t"
"movq (%%edx),%%mm0\n\t"
"pmaddwd (%%esi),%%mm0\n\t"
"movq 8(%%edx),%%mm1\n\t"
"pmaddwd 8(%%esi),%%mm1\n\t"
"movq 16(%%edx),%%mm2\n\t"
"pmaddwd 16(%%esi),%%mm2\n\t"
"movq 24(%%edx),%%mm3\n\t"
"pmaddwd 24(%%esi),%%mm3\n\t"
"paddd %%mm1,%%mm0\n\t"
"paddd %%mm2,%%mm0\n\t"
"paddd %%mm3,%%mm0\n\t"
"movq %%mm0,%%mm1\n\t"
"psrlq $32,%%mm1\n\t"
"paddd %%mm1,%%mm0\n\t"
"psrad $13,%%mm0\n\t"
"packssdw %%mm0,%%mm0\n\t"
"movd %%mm0,%%eax\n\t"
"movw %%ax, (%%edi)\n\t"
"sub $32,%%esi\n\t"
"add $64,%%edx\n\t"
"add $4,%%edi\n\t"
"movl $7,%%ecx\n\t"
ASMALIGN(4)
".L04:\n\t"
"movq (%%edx),%%mm0\n\t"
"movq 64(%%edx),%%mm4\n\t"
"pmaddwd (%%esi),%%mm0\n\t"
"pmaddwd -32(%%esi),%%mm4\n\t"
"movq 8(%%edx),%%mm1\n\t"
"movq 72(%%edx),%%mm5\n\t"
"pmaddwd 8(%%esi),%%mm1\n\t"
"pmaddwd -24(%%esi),%%mm5\n\t"
"movq 16(%%edx),%%mm2\n\t"
"movq 80(%%edx),%%mm6\n\t"
"pmaddwd 16(%%esi),%%mm2\n\t"
"pmaddwd -16(%%esi),%%mm6\n\t"
"movq 24(%%edx),%%mm3\n\t"
"movq 88(%%edx),%%mm7\n\t"
"pmaddwd 24(%%esi),%%mm3\n\t"
"pmaddwd -8(%%esi),%%mm7\n\t"
"paddd %%mm1,%%mm0\n\t"
"paddd %%mm5,%%mm4\n\t"
"paddd %%mm2,%%mm0\n\t"
"paddd %%mm6,%%mm4\n\t"
"paddd %%mm3,%%mm0\n\t"
"paddd %%mm7,%%mm4\n\t"
"movq %%mm0,%%mm1\n\t"
"movq %%mm4,%%mm5\n\t"
"psrlq $32,%%mm1\n\t"
"psrlq $32,%%mm5\n\t"
"paddd %%mm0,%%mm1\n\t"
"paddd %%mm4,%%mm5\n\t"
"psrad $13,%%mm1\n\t"
"psrad $13,%%mm5\n\t"
"packssdw %%mm1,%%mm1\n\t"
"packssdw %%mm5,%%mm5\n\t"
"psubd %%mm0,%%mm0\n\t"
"psubd %%mm4,%%mm4\n\t"
"psubsw %%mm1,%%mm0\n\t"
"psubsw %%mm5,%%mm4\n\t"
"movq (%%edi), %%mm1\n\t"
"punpckldq %%mm4, %%mm0\n\t"
"pand "MANGLE(one_null)", %%mm1\n\t"
"pand "MANGLE(null_one)", %%mm0\n\t"
"por %%mm0, %%mm1\n\t"
"movq %%mm1,(%%edi)\n\t"
"sub $64,%%esi\n\t"
"add $128,%%edx\n\t"
"add $8,%%edi\n\t"
"decl %%ecx\n\t"
"jnz .L04\n\t"
"movq (%%edx),%%mm0\n\t"
"pmaddwd (%%esi),%%mm0\n\t"
"movq 8(%%edx),%%mm1\n\t"
"pmaddwd 8(%%esi),%%mm1\n\t"
"movq 16(%%edx),%%mm2\n\t"
"pmaddwd 16(%%esi),%%mm2\n\t"
"movq 24(%%edx),%%mm3\n\t"
"pmaddwd 24(%%esi),%%mm3\n\t"
"paddd %%mm1,%%mm0\n\t"
"paddd %%mm2,%%mm0\n\t"
"paddd %%mm3,%%mm0\n\t"
"movq %%mm0,%%mm1\n\t"
"psrlq $32,%%mm1\n\t"
"paddd %%mm0,%%mm1\n\t"
"psrad $13,%%mm1\n\t"
"packssdw %%mm1,%%mm1\n\t"
"psubd %%mm0,%%mm0\n\t"
"psubsw %%mm1,%%mm0\n\t"
"movd %%mm0,%%eax\n\t"
"movw %%ax,(%%edi)\n\t"
"emms\n\t"
:"+c"(i), "+d"(window), "+S"(b0), "+D"(samples)
:
:"memory", "%eax");
return 0;
}
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