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| author | Michael Niedermayer <michaelni@gmx.at> | 2004-02-06 02:12:37 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2004-02-06 02:12:37 +0000 |
| commit | 364a17974979dcddf41b7e88b2f34e721ca8855a (patch) | |
| tree | 7c1b0984c45490a1cff19afc753f9492410adbf1 /libavcodec/i386 | |
| parent | 46026f4e5b55f82c50258b7f2be24bf3c763a173 (diff) | |
| download | ffmpeg-364a17974979dcddf41b7e88b2f34e721ca8855a.tar.gz | |
quantizer noise shaping optimization
Originally committed as revision 2750 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/i386')
| -rw-r--r-- | libavcodec/i386/dsputil_mmx.c | 94 |
1 files changed, 93 insertions, 1 deletions
diff --git a/libavcodec/i386/dsputil_mmx.c b/libavcodec/i386/dsputil_mmx.c index efa0225573..e2aee75c23 100644 --- a/libavcodec/i386/dsputil_mmx.c +++ b/libavcodec/i386/dsputil_mmx.c @@ -1973,6 +1973,92 @@ static void just_return() { return; } c->put_no_rnd_ ## postfix1 = put_no_rnd_ ## postfix2;\ c->avg_ ## postfix1 = avg_ ## postfix2; +static int try_8x8basis_mmx(int16_t rem[64], int16_t weight[64], int16_t basis[64], int scale){ + int i=0; + + assert(ABS(scale) < 256); + scale<<= 16 + 1 - BASIS_SHIFT + RECON_SHIFT; + + asm volatile( + "pcmpeqw %%mm6, %%mm6 \n\t" // -1w + "psrlw $15, %%mm6 \n\t" // 1w + "pxor %%mm7, %%mm7 \n\t" + "movd %4, %%mm5 \n\t" + "punpcklwd %%mm5, %%mm5 \n\t" + "punpcklwd %%mm5, %%mm5 \n\t" + "1: \n\t" + "movq (%1, %0), %%mm0 \n\t" + "movq 8(%1, %0), %%mm1 \n\t" + "pmulhw %%mm5, %%mm0 \n\t" + "pmulhw %%mm5, %%mm1 \n\t" + "paddw %%mm6, %%mm0 \n\t" + "paddw %%mm6, %%mm1 \n\t" + "psraw $1, %%mm0 \n\t" + "psraw $1, %%mm1 \n\t" + "paddw (%2, %0), %%mm0 \n\t" + "paddw 8(%2, %0), %%mm1 \n\t" + "psraw $6, %%mm0 \n\t" + "psraw $6, %%mm1 \n\t" + "pmullw (%3, %0), %%mm0 \n\t" + "pmullw 8(%3, %0), %%mm1 \n\t" + "pmaddwd %%mm0, %%mm0 \n\t" + "pmaddwd %%mm1, %%mm1 \n\t" + "paddd %%mm1, %%mm0 \n\t" + "psrld $4, %%mm0 \n\t" + "paddd %%mm0, %%mm7 \n\t" + "addl $16, %0 \n\t" + "cmpl $128, %0 \n\t" //FIXME optimize & bench + " jb 1b \n\t" + "movq %%mm7, %%mm6 \n\t" + "psrlq $32, %%mm7 \n\t" + "paddd %%mm6, %%mm7 \n\t" + "psrld $2, %%mm7 \n\t" + "movd %%mm7, %0 \n\t" + + : "+r" (i) + : "r"(basis), "r"(rem), "r"(weight), "g"(scale) + ); + return i; +} + +static void add_8x8basis_mmx(int16_t rem[64], int16_t basis[64], int scale){ + int i=0; + + if(ABS(scale) < 256){ + scale<<= 16 + 1 - BASIS_SHIFT + RECON_SHIFT; + asm volatile( + "pcmpeqw %%mm6, %%mm6 \n\t" // -1w + "psrlw $15, %%mm6 \n\t" // 1w + "movd %3, %%mm5 \n\t" + "punpcklwd %%mm5, %%mm5 \n\t" + "punpcklwd %%mm5, %%mm5 \n\t" + "1: \n\t" + "movq (%1, %0), %%mm0 \n\t" + "movq 8(%1, %0), %%mm1 \n\t" + "pmulhw %%mm5, %%mm0 \n\t" + "pmulhw %%mm5, %%mm1 \n\t" + "paddw %%mm6, %%mm0 \n\t" + "paddw %%mm6, %%mm1 \n\t" + "psraw $1, %%mm0 \n\t" + "psraw $1, %%mm1 \n\t" + "paddw (%2, %0), %%mm0 \n\t" + "paddw 8(%2, %0), %%mm1 \n\t" + "movq %%mm0, (%2, %0) \n\t" + "movq %%mm1, 8(%2, %0) \n\t" + "addl $16, %0 \n\t" + "cmpl $128, %0 \n\t" //FIXME optimize & bench + " jb 1b \n\t" + + : "+r" (i) + : "r"(basis), "r"(rem), "g"(scale) + ); + }else{ + for(i=0; i<8*8; i++){ + rem[i] += (basis[i]*scale + (1<<(BASIS_SHIFT - RECON_SHIFT-1)))>>(BASIS_SHIFT - RECON_SHIFT); + } + } +} + /* external functions, from idct_mmx.c */ void ff_mmx_idct(DCTELEM *block); void ff_mmxext_idct(DCTELEM *block); @@ -2125,10 +2211,16 @@ void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx) if(!(avctx->flags & CODEC_FLAG_BITEXACT)){ c->vsad[0] = vsad16_mmx; } + + if(!(avctx->flags & CODEC_FLAG_BITEXACT)){ + c->try_8x8basis= try_8x8basis_mmx; + } + c->add_8x8basis= add_8x8basis_mmx; + #endif //CONFIG_ENCODERS c->h263_v_loop_filter= h263_v_loop_filter_mmx; - c->h263_h_loop_filter= h263_h_loop_filter_mmx; + c->h263_h_loop_filter= h263_h_loop_filter_mmx; if (mm_flags & MM_MMXEXT) { c->put_pixels_tab[0][1] = put_pixels16_x2_mmx2; |