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FFmpeg/libavcodec/i386/mpegvideo_mmx_template.c

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/*
* MPEG video MMX templates
*
* Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#undef SPREADW
#undef PMAXW
#ifdef HAVE_MMX2
#define SPREADW(a) "pshufw $0, " #a ", " #a " \n\t"
#define PMAXW(a,b) "pmaxsw " #a ", " #b " \n\t"
#else
#define SPREADW(a) \
"punpcklwd " #a ", " #a " \n\t"\
"punpcklwd " #a ", " #a " \n\t"
#define PMAXW(a,b) \
"psubusw " #a ", " #b " \n\t"\
"paddw " #a ", " #b " \n\t"
#endif
static int RENAME(dct_quantize)(MpegEncContext *s,
DCTELEM *block, int n,
int qscale, int *overflow)
{
int level=0, last_non_zero_p1, q; //=0 is cuz gcc says uninitalized ...
const uint16_t *qmat, *bias;
static __align8 int16_t temp_block[64];
//s->fdct (block);
ff_fdct_mmx (block); //cant be anything else ...
if (s->mb_intra) {
int dummy;
if (n < 4)
q = s->y_dc_scale;
else
q = s->c_dc_scale;
/* note: block[0] is assumed to be positive */
if (!s->h263_aic) {
#if 1
asm volatile (
"imul %%ecx \n\t"
: "=d" (level), "=a"(dummy)
: "a" ((block[0]>>2) + q), "c" (inverse[q<<1])
);
#else
asm volatile (
"xorl %%edx, %%edx \n\t"
"divw %%cx \n\t"
"movzwl %%ax, %%eax \n\t"
: "=a" (level)
: "a" ((block[0]>>2) + q), "c" (q<<1)
: "%edx"
);
#endif
} else
/* For AIC we skip quant/dequant of INTRADC */
level = (block[0] + 4)>>3;
block[0]=0; //avoid fake overflow
// temp_block[0] = (block[0] + (q >> 1)) / q;
last_non_zero_p1 = 1;
bias = s->q_intra_matrix16_bias[qscale];
qmat = s->q_intra_matrix16[qscale];
} else {
last_non_zero_p1 = 0;
bias = s->q_inter_matrix16_bias[qscale];
qmat = s->q_inter_matrix16[qscale];
}
if(s->out_format == FMT_H263 && s->mpeg_quant==0){
/* PROLOGUE */
asm volatile(
"movd %%eax, %%mm3 \n\t" // last_non_zero_p1
SPREADW(%%mm3)
"pxor %%mm7, %%mm7 \n\t" // 0
"pxor %%mm4, %%mm4 \n\t" // 0
"movq (%1), %%mm5 \n\t" // qmat[0]
"pxor %%mm6, %%mm6 \n\t"
"psubw (%2), %%mm6 \n\t" // -bias[0]
"movl $-128, %%eax \n\t"
: "+a" (last_non_zero_p1)
: "r" (qmat), "r" (bias)
);
/* CORE */
asm volatile(
".balign 16 \n\t"
"1: \n\t"
"pxor %%mm1, %%mm1 \n\t" // 0
"movq (%1, %%eax), %%mm0 \n\t" // block[i]
"pcmpgtw %%mm0, %%mm1 \n\t" // block[i] <= 0 ? 0xFF : 0x00
"pxor %%mm1, %%mm0 \n\t"
"psubw %%mm1, %%mm0 \n\t" // ABS(block[i])
"psubusw %%mm6, %%mm0 \n\t" // ABS(block[i]) + bias[0]
"pmulhw %%mm5, %%mm0 \n\t" // (ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16
"por %%mm0, %%mm4 \n\t"
"pxor %%mm1, %%mm0 \n\t"
"psubw %%mm1, %%mm0 \n\t" // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
"movq %%mm0, (%3, %%eax) \n\t"
"pcmpeqw %%mm7, %%mm0 \n\t" // out==0 ? 0xFF : 0x00
"movq (%2, %%eax), %%mm1 \n\t"
"movq %%mm7, (%1, %%eax) \n\t" // 0
"pandn %%mm1, %%mm0 \n\t"
PMAXW(%%mm0, %%mm3)
"addl $8, %%eax \n\t"
" js 1b \n\t"
: "+a" (last_non_zero_p1)
: "r" (block+64), "r" (inv_zigzag_direct16+64), "r" (temp_block+64)
);
/* EPILOGUE */
asm volatile(
"movq %%mm3, %%mm0 \n\t"
"psrlq $32, %%mm3 \n\t"
PMAXW(%%mm0, %%mm3)
"movq %%mm3, %%mm0 \n\t"
"psrlq $16, %%mm3 \n\t"
PMAXW(%%mm0, %%mm3)
"movd %%mm3, %%eax \n\t"
"movzbl %%al, %%eax \n\t" // last_non_zero_p1
"movd %2, %%mm1 \n\t" // max_qcoeff
SPREADW(%%mm1)
"psubusw %%mm1, %%mm4 \n\t"
"packuswb %%mm4, %%mm4 \n\t"
"movd %%mm4, %1 \n\t" // *overflow
: "+a" (last_non_zero_p1), "=r" (*overflow)
: "r" (s->max_qcoeff)
);
}else{ // FMT_H263
asm volatile(
"pushl %%ebp \n\t"
"pushl %%ebx \n\t"
"movl %0, %%ebp \n\t"
"movl (%%ebp), %%ebx \n\t"
"movd %%ebx, %%mm3 \n\t" // last_non_zero_p1
SPREADW(%%mm3)
"pxor %%mm7, %%mm7 \n\t" // 0
"pxor %%mm4, %%mm4 \n\t" // 0
"movl $-128, %%ebx \n\t"
".balign 16 \n\t"
"1: \n\t"
"pxor %%mm1, %%mm1 \n\t" // 0
"movq (%1, %%ebx), %%mm0 \n\t" // block[i]
"pcmpgtw %%mm0, %%mm1 \n\t" // block[i] <= 0 ? 0xFF : 0x00
"pxor %%mm1, %%mm0 \n\t"
"psubw %%mm1, %%mm0 \n\t" // ABS(block[i])
"movq (%3, %%ebx), %%mm6 \n\t" // bias[0]
"paddusw %%mm6, %%mm0 \n\t" // ABS(block[i]) + bias[0]
"movq (%2, %%ebx), %%mm5 \n\t" // qmat[i]
"pmulhw %%mm5, %%mm0 \n\t" // (ABS(block[i])*qmat[0] + bias[0]*qmat[0])>>16
"por %%mm0, %%mm4 \n\t"
"pxor %%mm1, %%mm0 \n\t"
"psubw %%mm1, %%mm0 \n\t" // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
"movq %%mm0, (%5, %%ebx) \n\t"
"pcmpeqw %%mm7, %%mm0 \n\t" // out==0 ? 0xFF : 0x00
"movq (%4, %%ebx), %%mm1 \n\t"
"movq %%mm7, (%1, %%ebx) \n\t" // 0
"pandn %%mm1, %%mm0 \n\t"
PMAXW(%%mm0, %%mm3)
"addl $8, %%ebx \n\t"
" js 1b \n\t"
"movq %%mm3, %%mm0 \n\t"
"psrlq $32, %%mm3 \n\t"
PMAXW(%%mm0, %%mm3)
"movq %%mm3, %%mm0 \n\t"
"psrlq $16, %%mm3 \n\t"
PMAXW(%%mm0, %%mm3)
"movd %%mm3, %%ebx \n\t"
"movzbl %%bl, %%ebx \n\t" // last_non_zero_p1
"movl %%ebx, (%%ebp) \n\t"
"popl %%ebx \n\t"
"popl %%ebp \n\t"
:
: "m" (last_non_zero_p1),
"r" (block+64), "r" (qmat+64), "r" (bias+64),
"r" (inv_zigzag_direct16+64), "r" (temp_block+64)
);
// note the asm is split cuz gcc doesnt like that many operands ...
asm volatile(
"movd %1, %%mm1 \n\t" // max_qcoeff
SPREADW(%%mm1)
"psubusw %%mm1, %%mm4 \n\t"
"packuswb %%mm4, %%mm4 \n\t"
"movd %%mm4, %0 \n\t" // *overflow
: "=r" (*overflow)
: "r" (s->max_qcoeff)
);
}
if(s->mb_intra) block[0]= level;
else block[0]= temp_block[0];
if(s->dsp.idct_permutation_type == FF_SIMPLE_IDCT_PERM){
if(last_non_zero_p1 <= 1) goto end;
block[0x08] = temp_block[0x01]; block[0x10] = temp_block[0x08];
block[0x20] = temp_block[0x10];
if(last_non_zero_p1 <= 4) goto end;
block[0x18] = temp_block[0x09]; block[0x04] = temp_block[0x02];
block[0x09] = temp_block[0x03];
if(last_non_zero_p1 <= 7) goto end;
block[0x14] = temp_block[0x0A]; block[0x28] = temp_block[0x11];
block[0x12] = temp_block[0x18]; block[0x02] = temp_block[0x20];
if(last_non_zero_p1 <= 11) goto end;
block[0x1A] = temp_block[0x19]; block[0x24] = temp_block[0x12];
block[0x19] = temp_block[0x0B]; block[0x01] = temp_block[0x04];
block[0x0C] = temp_block[0x05];
if(last_non_zero_p1 <= 16) goto end;
block[0x11] = temp_block[0x0C]; block[0x29] = temp_block[0x13];
block[0x16] = temp_block[0x1A]; block[0x0A] = temp_block[0x21];
block[0x30] = temp_block[0x28]; block[0x22] = temp_block[0x30];
block[0x38] = temp_block[0x29]; block[0x06] = temp_block[0x22];
if(last_non_zero_p1 <= 24) goto end;
block[0x1B] = temp_block[0x1B]; block[0x21] = temp_block[0x14];
block[0x1C] = temp_block[0x0D]; block[0x05] = temp_block[0x06];
block[0x0D] = temp_block[0x07]; block[0x15] = temp_block[0x0E];
block[0x2C] = temp_block[0x15]; block[0x13] = temp_block[0x1C];
if(last_non_zero_p1 <= 32) goto end;
block[0x0B] = temp_block[0x23]; block[0x34] = temp_block[0x2A];
block[0x2A] = temp_block[0x31]; block[0x32] = temp_block[0x38];
block[0x3A] = temp_block[0x39]; block[0x26] = temp_block[0x32];
block[0x39] = temp_block[0x2B]; block[0x03] = temp_block[0x24];
if(last_non_zero_p1 <= 40) goto end;
block[0x1E] = temp_block[0x1D]; block[0x25] = temp_block[0x16];
block[0x1D] = temp_block[0x0F]; block[0x2D] = temp_block[0x17];
block[0x17] = temp_block[0x1E]; block[0x0E] = temp_block[0x25];
block[0x31] = temp_block[0x2C]; block[0x2B] = temp_block[0x33];
if(last_non_zero_p1 <= 48) goto end;
block[0x36] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B];
block[0x23] = temp_block[0x34]; block[0x3C] = temp_block[0x2D];
block[0x07] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
block[0x0F] = temp_block[0x27]; block[0x35] = temp_block[0x2E];
if(last_non_zero_p1 <= 56) goto end;
block[0x2E] = temp_block[0x35]; block[0x33] = temp_block[0x3C];
block[0x3E] = temp_block[0x3D]; block[0x27] = temp_block[0x36];
block[0x3D] = temp_block[0x2F]; block[0x2F] = temp_block[0x37];
block[0x37] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
}else if(s->dsp.idct_permutation_type == FF_LIBMPEG2_IDCT_PERM){
if(last_non_zero_p1 <= 1) goto end;
block[0x04] = temp_block[0x01];
block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10];
if(last_non_zero_p1 <= 4) goto end;
block[0x0C] = temp_block[0x09]; block[0x01] = temp_block[0x02];
block[0x05] = temp_block[0x03];
if(last_non_zero_p1 <= 7) goto end;
block[0x09] = temp_block[0x0A]; block[0x14] = temp_block[0x11];
block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20];
if(last_non_zero_p1 <= 11) goto end;
block[0x1C] = temp_block[0x19];
block[0x11] = temp_block[0x12]; block[0x0D] = temp_block[0x0B];
block[0x02] = temp_block[0x04]; block[0x06] = temp_block[0x05];
if(last_non_zero_p1 <= 16) goto end;
block[0x0A] = temp_block[0x0C]; block[0x15] = temp_block[0x13];
block[0x19] = temp_block[0x1A]; block[0x24] = temp_block[0x21];
block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30];
block[0x2C] = temp_block[0x29]; block[0x21] = temp_block[0x22];
if(last_non_zero_p1 <= 24) goto end;
block[0x1D] = temp_block[0x1B]; block[0x12] = temp_block[0x14];
block[0x0E] = temp_block[0x0D]; block[0x03] = temp_block[0x06];
block[0x07] = temp_block[0x07]; block[0x0B] = temp_block[0x0E];
block[0x16] = temp_block[0x15]; block[0x1A] = temp_block[0x1C];
if(last_non_zero_p1 <= 32) goto end;
block[0x25] = temp_block[0x23]; block[0x29] = temp_block[0x2A];
block[0x34] = temp_block[0x31]; block[0x38] = temp_block[0x38];
block[0x3C] = temp_block[0x39]; block[0x31] = temp_block[0x32];
block[0x2D] = temp_block[0x2B]; block[0x22] = temp_block[0x24];
if(last_non_zero_p1 <= 40) goto end;
block[0x1E] = temp_block[0x1D]; block[0x13] = temp_block[0x16];
block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17];
block[0x1B] = temp_block[0x1E]; block[0x26] = temp_block[0x25];
block[0x2A] = temp_block[0x2C]; block[0x35] = temp_block[0x33];
if(last_non_zero_p1 <= 48) goto end;
block[0x39] = temp_block[0x3A]; block[0x3D] = temp_block[0x3B];
block[0x32] = temp_block[0x34]; block[0x2E] = temp_block[0x2D];
block[0x23] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
block[0x27] = temp_block[0x27]; block[0x2B] = temp_block[0x2E];
if(last_non_zero_p1 <= 56) goto end;
block[0x36] = temp_block[0x35]; block[0x3A] = temp_block[0x3C];
block[0x3E] = temp_block[0x3D]; block[0x33] = temp_block[0x36];
block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37];
block[0x3B] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
}else{
if(last_non_zero_p1 <= 1) goto end;
block[0x01] = temp_block[0x01];
block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10];
if(last_non_zero_p1 <= 4) goto end;
block[0x09] = temp_block[0x09]; block[0x02] = temp_block[0x02];
block[0x03] = temp_block[0x03];
if(last_non_zero_p1 <= 7) goto end;
block[0x0A] = temp_block[0x0A]; block[0x11] = temp_block[0x11];
block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20];
if(last_non_zero_p1 <= 11) goto end;
block[0x19] = temp_block[0x19];
block[0x12] = temp_block[0x12]; block[0x0B] = temp_block[0x0B];
block[0x04] = temp_block[0x04]; block[0x05] = temp_block[0x05];
if(last_non_zero_p1 <= 16) goto end;
block[0x0C] = temp_block[0x0C]; block[0x13] = temp_block[0x13];
block[0x1A] = temp_block[0x1A]; block[0x21] = temp_block[0x21];
block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30];
block[0x29] = temp_block[0x29]; block[0x22] = temp_block[0x22];
if(last_non_zero_p1 <= 24) goto end;
block[0x1B] = temp_block[0x1B]; block[0x14] = temp_block[0x14];
block[0x0D] = temp_block[0x0D]; block[0x06] = temp_block[0x06];
block[0x07] = temp_block[0x07]; block[0x0E] = temp_block[0x0E];
block[0x15] = temp_block[0x15]; block[0x1C] = temp_block[0x1C];
if(last_non_zero_p1 <= 32) goto end;
block[0x23] = temp_block[0x23]; block[0x2A] = temp_block[0x2A];
block[0x31] = temp_block[0x31]; block[0x38] = temp_block[0x38];
block[0x39] = temp_block[0x39]; block[0x32] = temp_block[0x32];
block[0x2B] = temp_block[0x2B]; block[0x24] = temp_block[0x24];
if(last_non_zero_p1 <= 40) goto end;
block[0x1D] = temp_block[0x1D]; block[0x16] = temp_block[0x16];
block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17];
block[0x1E] = temp_block[0x1E]; block[0x25] = temp_block[0x25];
block[0x2C] = temp_block[0x2C]; block[0x33] = temp_block[0x33];
if(last_non_zero_p1 <= 48) goto end;
block[0x3A] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B];
block[0x34] = temp_block[0x34]; block[0x2D] = temp_block[0x2D];
block[0x26] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
block[0x27] = temp_block[0x27]; block[0x2E] = temp_block[0x2E];
if(last_non_zero_p1 <= 56) goto end;
block[0x35] = temp_block[0x35]; block[0x3C] = temp_block[0x3C];
block[0x3D] = temp_block[0x3D]; block[0x36] = temp_block[0x36];
block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37];
block[0x3E] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
}
end:
/*
for(i=0; i<last_non_zero_p1; i++)
{
int j= zigzag_direct_noperm[i];
block[block_permute_op(j)]= temp_block[j];
}
*/
return last_non_zero_p1 - 1;
}