Chiebot-Mirror
/
FFmpeg
mirror of https://github.com/FFmpeg/FFmpeg.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity

* oops - reversed last commit

Browse Source 
Originally committed as revision 1868 to svn://svn.ffmpeg.org/ffmpeg/trunk
pull/126/head
Zdenek Kabelac 22 years ago
parent 4704097a2b
commit d04fdff161
1 changed files with 31 additions and 43 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 74
      libavcodec/i386/mpegvideo_mmx_template.c

74
libavcodec/i386/mpegvideo_mmx_template.c
Unescape View File

@ -83,21 +83,16 @@ static int RENAME(dct_quantize)(MpegEncContext *s,
}
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]
"movq (%2), %%mm5 \n\t" // qmat[0]
"pxor %%mm6, %%mm6 \n\t"
"psubw (%2), %%mm6 \n\t" // -bias[0]
"psubw (%3), %%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
@ -110,19 +105,14 @@ static int RENAME(dct_quantize)(MpegEncContext *s,
"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"
"movq %%mm0, (%5, %%eax) \n\t"
"pcmpeqw %%mm7, %%mm0 \n\t" // out==0 ? 0xFF : 0x00
"movq (%2, %%eax), %%mm1 \n\t"
"movq (%4, %%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)
@ -131,46 +121,48 @@ static int RENAME(dct_quantize)(MpegEncContext *s,
PMAXW(%%mm0, %%mm3)
"movd %%mm3, %%eax \n\t"
"movzbl %%al, %%eax \n\t" // last_non_zero_p1
"movd %2, %%mm1 \n\t" // max_qcoeff
: "+a" (last_non_zero_p1)
: "r" (block+64), "r" (qmat), "r" (bias),
"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, %1 \n\t" // *overflow
: "+a" (last_non_zero_p1), "=r" (*overflow)
: "r" (s->max_qcoeff)
);
"movd %%mm4, %0 \n\t" // *overflow
: "=g" (*overflow)
: "g" (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
"movd %%eax, %%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"
"movl $-128, %%eax \n\t"
".balign 16 \n\t"
"1: \n\t"
"pxor %%mm1, %%mm1 \n\t" // 0
"movq (%1, %%ebx), %%mm0 \n\t" // block[i]
"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])
"movq (%3, %%ebx), %%mm6 \n\t" // bias[0]
"movq (%3, %%eax), %%mm6 \n\t" // bias[0]
"paddusw %%mm6, %%mm0 \n\t" // ABS(block[i]) + bias[0]
"movq (%2, %%ebx), %%mm5 \n\t" // qmat[i]
"movq (%2, %%eax), %%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"
"movq %%mm0, (%5, %%eax) \n\t"
"pcmpeqw %%mm7, %%mm0 \n\t" // out==0 ? 0xFF : 0x00
"movq (%4, %%ebx), %%mm1 \n\t"
"movq %%mm7, (%1, %%ebx) \n\t" // 0
"movq (%4, %%eax), %%mm1 \n\t"
"movq %%mm7, (%1, %%eax) \n\t" // 0
"pandn %%mm1, %%mm0 \n\t"
PMAXW(%%mm0, %%mm3)
"addl $8, %%ebx \n\t"
"addl $8, %%eax \n\t"
" js 1b \n\t"
"movq %%mm3, %%mm0 \n\t"
"psrlq $32, %%mm3 \n\t"
@ -178,14 +170,10 @@ static int RENAME(dct_quantize)(MpegEncContext *s,
"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),
"movd %%mm3, %%eax \n\t"
"movzbl %%al, %%eax \n\t" // last_non_zero_p1
: "+a" (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 ...
@ -195,8 +183,8 @@ static int RENAME(dct_quantize)(MpegEncContext *s,
"psubusw %%mm1, %%mm4 \n\t"
"packuswb %%mm4, %%mm4 \n\t"
"movd %%mm4, %0 \n\t" // *overflow
: "=r" (*overflow)
: "r" (s->max_qcoeff)
: "=g" (*overflow)
: "g" (s->max_qcoeff)
);
}

Write Preview
Loading…
Cancel
Save