mirror of
https://github.com/mpv-player/mpv
synced 2024-12-15 11:25:10 +00:00
d686f4e3cf
part 1: functional changes git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@18723 b3059339-0415-0410-9bf9-f77b7e298cf2
566 lines
15 KiB
C
566 lines
15 KiB
C
/*
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3DNOW and 3DNOWEX optimized IMDCT
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Licence: GPL v2
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Copyrights: Nick Kurshev
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*/
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#undef FFT_4_3DNOW
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#undef FFT_8_3DNOW
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#undef FFT_ASMB_3DNOW
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#undef FFT_ASMB16_3DNOW
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#undef FFT_128P_3DNOW
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#ifdef HAVE_3DNOWEX
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#define FFT_4_3DNOW fft_4_3dnowex
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#define FFT_8_3DNOW fft_8_3dnowex
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#define FFT_ASMB_3DNOW fft_asmb_3dnowex
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#define FFT_ASMB16_3DNOW fft_asmb16_3dnowex
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#define FFT_128P_3DNOW fft_128p_3dnowex
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#else
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#define FFT_4_3DNOW fft_4_3dnow
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#define FFT_8_3DNOW fft_8_3dnow
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#define FFT_ASMB_3DNOW fft_asmb_3dnow
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#define FFT_ASMB16_3DNOW fft_asmb16_3dnow
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#define FFT_128P_3DNOW fft_128p_3dnow
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#endif
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static void FFT_4_3DNOW(complex_t *x)
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{
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/* delta_p = 1 here */
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/* x[k] = sum_{i=0..3} x[i] * w^{i*k}, w=e^{-2*pi/4}
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*/
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__asm__ __volatile__(
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"movq 24(%1), %%mm3\n\t"
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"movq 8(%1), %%mm1\n\t"
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"pxor %2, %%mm3\n\t" /* mm3.re | -mm3.im */
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"pxor %3, %%mm1\n\t" /* -mm1.re | mm1.im */
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"pfadd %%mm1, %%mm3\n\t" /* vi.im = x[3].re - x[1].re; */
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"movq %%mm3, %%mm4\n\t" /* vi.re =-x[3].im + x[1].im; mm4 = vi */
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#ifdef HAVE_3DNOWEX
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"pswapd %%mm4, %%mm4\n\t"
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#else
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"punpckldq %%mm4, %%mm5\n\t"
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"punpckhdq %%mm5, %%mm4\n\t"
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#endif
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"movq (%1), %%mm5\n\t" /* yb.re = x[0].re - x[2].re; */
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"movq (%1), %%mm6\n\t" /* yt.re = x[0].re + x[2].re; */
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"movq 24(%1), %%mm7\n\t" /* u.re = x[3].re + x[1].re; */
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"pfsub 16(%1), %%mm5\n\t" /* yb.im = x[0].im - x[2].im; mm5 = yb */
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"pfadd 16(%1), %%mm6\n\t" /* yt.im = x[0].im + x[2].im; mm6 = yt */
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"pfadd 8(%1), %%mm7\n\t" /* u.im = x[3].im + x[1].im; mm7 = u */
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"movq %%mm6, %%mm0\n\t" /* x[0].re = yt.re + u.re; */
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"movq %%mm5, %%mm1\n\t" /* x[1].re = yb.re + vi.re; */
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"pfadd %%mm7, %%mm0\n\t" /*x[0].im = yt.im + u.im; */
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"pfadd %%mm4, %%mm1\n\t" /* x[1].im = yb.im + vi.im; */
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"movq %%mm0, (%0)\n\t"
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"movq %%mm1, 8(%0)\n\t"
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"pfsub %%mm7, %%mm6\n\t" /* x[2].re = yt.re - u.re; */
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"pfsub %%mm4, %%mm5\n\t" /* x[3].re = yb.re - vi.re; */
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"movq %%mm6, 16(%0)\n\t" /* x[2].im = yt.im - u.im; */
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"movq %%mm5, 24(%0)" /* x[3].im = yb.im - vi.im; */
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:"=r"(x)
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:"0"(x),
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"m"(x_plus_minus_3dnow),
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"m"(x_minus_plus_3dnow)
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:"memory");
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}
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static void FFT_8_3DNOW(complex_t *x)
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{
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/* delta_p = diag{1, sqrt(i)} here */
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/* x[k] = sum_{i=0..7} x[i] * w^{i*k}, w=e^{-2*pi/8}
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*/
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complex_t wT1, wB1, wB2;
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__asm__ __volatile__(
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"movq 8(%2), %%mm0\n\t"
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"movq 24(%2), %%mm1\n\t"
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"movq %%mm0, %0\n\t" /* wT1 = x[1]; */
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"movq %%mm1, %1\n\t" /* wB1 = x[3]; */
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:"=m"(wT1), "=m"(wB1)
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:"r"(x)
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:"memory");
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__asm__ __volatile__(
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"movq 16(%0), %%mm2\n\t"
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"movq 32(%0), %%mm3\n\t"
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"movq %%mm2, 8(%0)\n\t" /* x[1] = x[2]; */
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"movq 48(%0), %%mm4\n\t"
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"movq %%mm3, 16(%0)\n\t" /* x[2] = x[4]; */
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"movq %%mm4, 24(%0)\n\t" /* x[3] = x[6]; */
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:"=r"(x)
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:"0"(x)
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:"memory");
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fft_4_3dnow(&x[0]);
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/* x[0] x[4] x[2] x[6] */
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__asm__ __volatile__(
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"movq 40(%1), %%mm0\n\t"
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"movq %%mm0, %%mm3\n\t"
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"movq 56(%1), %%mm1\n\t"
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"pfadd %%mm1, %%mm0\n\t"
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"pfsub %%mm1, %%mm3\n\t"
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"movq (%2), %%mm2\n\t"
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"pfadd %%mm2, %%mm0\n\t"
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"pfadd %%mm2, %%mm3\n\t"
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"movq (%3), %%mm1\n\t"
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"pfadd %%mm1, %%mm0\n\t"
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"pfsub %%mm1, %%mm3\n\t"
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"movq (%1), %%mm1\n\t"
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"movq 16(%1), %%mm4\n\t"
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"movq %%mm1, %%mm2\n\t"
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#ifdef HAVE_3DNOWEX
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"pswapd %%mm3, %%mm3\n\t"
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#else
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"punpckldq %%mm3, %%mm6\n\t"
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"punpckhdq %%mm6, %%mm3\n\t"
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#endif
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"pfadd %%mm0, %%mm1\n\t"
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"movq %%mm4, %%mm5\n\t"
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"pfsub %%mm0, %%mm2\n\t"
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"pfadd %%mm3, %%mm4\n\t"
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"movq %%mm1, (%0)\n\t"
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"pfsub %%mm3, %%mm5\n\t"
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"movq %%mm2, 32(%0)\n\t"
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"movd %%mm4, 16(%0)\n\t"
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"movd %%mm5, 48(%0)\n\t"
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"psrlq $32, %%mm4\n\t"
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"psrlq $32, %%mm5\n\t"
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"movd %%mm4, 52(%0)\n\t"
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"movd %%mm5, 20(%0)"
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:"=r"(x)
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:"0"(x), "r"(&wT1), "r"(&wB1)
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:"memory");
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/* x[1] x[5] */
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__asm__ __volatile__ (
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"movq %6, %%mm6\n\t"
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"movq %5, %%mm7\n\t"
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"movq %1, %%mm0\n\t"
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"movq %2, %%mm1\n\t"
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"movq 56(%3), %%mm3\n\t"
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"pfsub 40(%3), %%mm0\n\t"
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#ifdef HAVE_3DNOWEX
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"pswapd %%mm1, %%mm1\n\t"
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#else
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"punpckldq %%mm1, %%mm2\n\t"
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"punpckhdq %%mm2, %%mm1\n\t"
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#endif
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"pxor %%mm7, %%mm1\n\t"
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"pfadd %%mm1, %%mm0\n\t"
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#ifdef HAVE_3DNOWEX
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"pswapd %%mm3, %%mm3\n\t"
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#else
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"punpckldq %%mm3, %%mm2\n\t"
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"punpckhdq %%mm2, %%mm3\n\t"
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#endif
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"pxor %%mm6, %%mm3\n\t"
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"pfadd %%mm3, %%mm0\n\t"
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"movq %%mm0, %%mm1\n\t"
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"pxor %%mm6, %%mm1\n\t"
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"pfacc %%mm1, %%mm0\n\t"
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"pfmul %4, %%mm0\n\t"
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"movq 40(%3), %%mm5\n\t"
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#ifdef HAVE_3DNOWEX
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"pswapd %%mm5, %%mm5\n\t"
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#else
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"punpckldq %%mm5, %%mm1\n\t"
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"punpckhdq %%mm1, %%mm5\n\t"
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#endif
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"movq %%mm5, %0\n\t"
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"movq 8(%3), %%mm1\n\t"
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"movq %%mm1, %%mm2\n\t"
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"pfsub %%mm0, %%mm1\n\t"
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"pfadd %%mm0, %%mm2\n\t"
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"movq %%mm1, 40(%3)\n\t"
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"movq %%mm2, 8(%3)\n\t"
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:"=m"(wB2)
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:"m"(wT1), "m"(wB1), "r"(x), "m"(HSQRT2_3DNOW),
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"m"(x_plus_minus_3dnow), "m"(x_minus_plus_3dnow)
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:"memory");
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/* x[3] x[7] */
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__asm__ __volatile__(
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"movq %1, %%mm0\n\t"
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#ifdef HAVE_3DNOWEX
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"pswapd %3, %%mm1\n\t"
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#else
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"movq %3, %%mm1\n\t"
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"punpckldq %%mm1, %%mm2\n\t"
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"punpckhdq %%mm2, %%mm1\n\t"
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#endif
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"pxor %%mm6, %%mm1\n\t"
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"pfadd %%mm1, %%mm0\n\t"
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"movq %2, %%mm2\n\t"
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"movq 56(%4), %%mm3\n\t"
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"pxor %%mm7, %%mm3\n\t"
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"pfadd %%mm3, %%mm2\n\t"
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#ifdef HAVE_3DNOWEX
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"pswapd %%mm2, %%mm2\n\t"
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#else
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"punpckldq %%mm2, %%mm5\n\t"
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"punpckhdq %%mm5, %%mm2\n\t"
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#endif
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"movq 24(%4), %%mm3\n\t"
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"pfsub %%mm2, %%mm0\n\t"
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"movq %%mm3, %%mm4\n\t"
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"movq %%mm0, %%mm1\n\t"
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"pxor %%mm6, %%mm0\n\t"
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"pfacc %%mm1, %%mm0\n\t"
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"pfmul %5, %%mm0\n\t"
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"movq %%mm0, %%mm1\n\t"
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"pxor %%mm6, %%mm1\n\t"
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"pxor %%mm7, %%mm0\n\t"
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"pfadd %%mm1, %%mm3\n\t"
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"pfadd %%mm0, %%mm4\n\t"
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"movq %%mm4, 24(%0)\n\t"
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"movq %%mm3, 56(%0)\n\t"
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:"=r"(x)
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:"m"(wT1), "m"(wB2), "m"(wB1), "0"(x), "m"(HSQRT2_3DNOW)
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:"memory");
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}
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static void FFT_ASMB_3DNOW(int k, complex_t *x, complex_t *wTB,
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const complex_t *d, const complex_t *d_3)
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{
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register complex_t *x2k, *x3k, *x4k, *wB;
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TRANS_FILL_MM6_MM7_3DNOW();
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x2k = x + 2 * k;
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x3k = x2k + 2 * k;
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x4k = x3k + 2 * k;
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wB = wTB + 2 * k;
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TRANSZERO_3DNOW(x[0],x2k[0],x3k[0],x4k[0]);
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TRANS_3DNOW(x[1],x2k[1],x3k[1],x4k[1],wTB[1],wB[1],d[1],d_3[1]);
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--k;
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for(;;) {
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TRANS_3DNOW(x[2],x2k[2],x3k[2],x4k[2],wTB[2],wB[2],d[2],d_3[2]);
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TRANS_3DNOW(x[3],x2k[3],x3k[3],x4k[3],wTB[3],wB[3],d[3],d_3[3]);
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if (!--k) break;
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x += 2;
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x2k += 2;
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x3k += 2;
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x4k += 2;
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d += 2;
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d_3 += 2;
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wTB += 2;
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wB += 2;
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}
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}
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void FFT_ASMB16_3DNOW(complex_t *x, complex_t *wTB)
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{
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int k = 2;
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TRANS_FILL_MM6_MM7_3DNOW();
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/* transform x[0], x[8], x[4], x[12] */
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TRANSZERO_3DNOW(x[0],x[4],x[8],x[12]);
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/* transform x[1], x[9], x[5], x[13] */
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TRANS_3DNOW(x[1],x[5],x[9],x[13],wTB[1],wTB[5],delta16[1],delta16_3[1]);
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/* transform x[2], x[10], x[6], x[14] */
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TRANSHALF_16_3DNOW(x[2],x[6],x[10],x[14]);
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/* transform x[3], x[11], x[7], x[15] */
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TRANS_3DNOW(x[3],x[7],x[11],x[15],wTB[3],wTB[7],delta16[3],delta16_3[3]);
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}
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static void FFT_128P_3DNOW(complex_t *a)
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{
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FFT_8_3DNOW(&a[0]); FFT_4_3DNOW(&a[8]); FFT_4_3DNOW(&a[12]);
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FFT_ASMB16_3DNOW(&a[0], &a[8]);
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FFT_8_3DNOW(&a[16]), FFT_8_3DNOW(&a[24]);
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FFT_ASMB_3DNOW(4, &a[0], &a[16],&delta32[0], &delta32_3[0]);
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FFT_8_3DNOW(&a[32]); FFT_4_3DNOW(&a[40]); FFT_4_3DNOW(&a[44]);
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FFT_ASMB16_3DNOW(&a[32], &a[40]);
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FFT_8_3DNOW(&a[48]); FFT_4_3DNOW(&a[56]); FFT_4_3DNOW(&a[60]);
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FFT_ASMB16_3DNOW(&a[48], &a[56]);
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FFT_ASMB_3DNOW(8, &a[0], &a[32],&delta64[0], &delta64_3[0]);
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FFT_8_3DNOW(&a[64]); FFT_4_3DNOW(&a[72]); FFT_4_3DNOW(&a[76]);
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/* FFT_16(&a[64]); */
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FFT_ASMB16_3DNOW(&a[64], &a[72]);
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FFT_8_3DNOW(&a[80]); FFT_8_3DNOW(&a[88]);
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/* FFT_32(&a[64]); */
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FFT_ASMB_3DNOW(4, &a[64], &a[80],&delta32[0], &delta32_3[0]);
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FFT_8_3DNOW(&a[96]); FFT_4_3DNOW(&a[104]), FFT_4_3DNOW(&a[108]);
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/* FFT_16(&a[96]); */
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FFT_ASMB16_3DNOW(&a[96], &a[104]);
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FFT_8_3DNOW(&a[112]), FFT_8_3DNOW(&a[120]);
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/* FFT_32(&a[96]); */
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FFT_ASMB_3DNOW(4, &a[96], &a[112], &delta32[0], &delta32_3[0]);
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/* FFT_128(&a[0]); */
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FFT_ASMB_3DNOW(16, &a[0], &a[64], &delta128[0], &delta128_3[0]);
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}
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static void
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#ifdef HAVE_3DNOWEX
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imdct_do_512_3dnowex
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#else
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imdct_do_512_3dnow
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#endif
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(sample_t data[],sample_t delay[], sample_t bias)
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{
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int i;
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/* int k;
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int p,q;
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int m;
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int two_m;
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int two_m_plus_one;
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sample_t tmp_a_i;
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sample_t tmp_a_r;
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sample_t tmp_b_i;
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sample_t tmp_b_r;*/
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sample_t *data_ptr;
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sample_t *delay_ptr;
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sample_t *window_ptr;
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/* 512 IMDCT with source and dest data in 'data' */
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/* Pre IFFT complex multiply plus IFFT cmplx conjugate & reordering*/
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#if 1
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__asm__ __volatile__ (
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"movq %0, %%mm7\n\t"
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::"m"(x_plus_minus_3dnow)
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:"memory");
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for( i=0; i < 128; i++) {
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int j = pm128[i];
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__asm__ __volatile__ (
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"movd %1, %%mm0\n\t"
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"movd %3, %%mm1\n\t"
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"punpckldq %2, %%mm0\n\t" /* mm0 = data[256-2*j-1] | data[2*j]*/
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"punpckldq %4, %%mm1\n\t" /* mm1 = xcos[j] | xsin[j] */
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"movq %%mm0, %%mm2\n\t"
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"pfmul %%mm1, %%mm0\n\t"
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#ifdef HAVE_3DNOWEX
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"pswapd %%mm1, %%mm1\n\t"
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#else
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"punpckldq %%mm1, %%mm5\n\t"
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"punpckhdq %%mm5, %%mm1\n\t"
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#endif
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"pfmul %%mm1, %%mm2\n\t"
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#ifdef HAVE_3DNOWEX
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"pfpnacc %%mm2, %%mm0\n\t"
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#else
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"pxor %%mm7, %%mm0\n\t"
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"pfacc %%mm2, %%mm0\n\t"
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#endif
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"pxor %%mm7, %%mm0\n\t"
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"movq %%mm0, %0"
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:"=m"(buf[i])
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:"m"(data[256-2*j-1]), "m"(data[2*j]), "m"(xcos1[j]), "m"(xsin1[j])
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:"memory"
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);
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/* buf[i].re = (data[256-2*j-1] * xcos1[j] - data[2*j] * xsin1[j]);
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buf[i].im = (data[256-2*j-1] * xsin1[j] + data[2*j] * xcos1[j])*(-1.0);*/
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}
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#else
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__asm__ __volatile__ ("femms":::"memory");
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for( i=0; i < 128; i++) {
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/* z[i] = (X[256-2*i-1] + j * X[2*i]) * (xcos1[i] + j * xsin1[i]) ; */
|
|
int j= pm128[i];
|
|
buf[i].real = (data[256-2*j-1] * xcos1[j]) - (data[2*j] * xsin1[j]);
|
|
buf[i].imag = -1.0 * ((data[2*j] * xcos1[j]) + (data[256-2*j-1] * xsin1[j]));
|
|
}
|
|
#endif
|
|
|
|
/* FFT Merge */
|
|
/* unoptimized variant
|
|
for (m=1; m < 7; m++) {
|
|
if(m)
|
|
two_m = (1 << m);
|
|
else
|
|
two_m = 1;
|
|
|
|
two_m_plus_one = (1 << (m+1));
|
|
|
|
for(i = 0; i < 128; i += two_m_plus_one) {
|
|
for(k = 0; k < two_m; k++) {
|
|
p = k + i;
|
|
q = p + two_m;
|
|
tmp_a_r = buf[p].real;
|
|
tmp_a_i = buf[p].imag;
|
|
tmp_b_r = buf[q].real * w[m][k].real - buf[q].imag * w[m][k].imag;
|
|
tmp_b_i = buf[q].imag * w[m][k].real + buf[q].real * w[m][k].imag;
|
|
buf[p].real = tmp_a_r + tmp_b_r;
|
|
buf[p].imag = tmp_a_i + tmp_b_i;
|
|
buf[q].real = tmp_a_r - tmp_b_r;
|
|
buf[q].imag = tmp_a_i - tmp_b_i;
|
|
}
|
|
}
|
|
}
|
|
*/
|
|
|
|
FFT_128P_3DNOW (&buf[0]);
|
|
// asm volatile ("femms \n\t":::"memory");
|
|
|
|
/* Post IFFT complex multiply plus IFFT complex conjugate*/
|
|
#if 1
|
|
__asm__ __volatile__ (
|
|
"movq %0, %%mm7\n\t"
|
|
"movq %1, %%mm6\n\t"
|
|
::"m"(x_plus_minus_3dnow),
|
|
"m"(x_minus_plus_3dnow)
|
|
:"eax","memory");
|
|
for (i=0; i < 128; i++) {
|
|
__asm__ __volatile__ (
|
|
"movq %1, %%mm0\n\t" /* ac3_buf[i].re | ac3_buf[i].im */
|
|
"movq %%mm0, %%mm1\n\t" /* ac3_buf[i].re | ac3_buf[i].im */
|
|
#ifndef HAVE_3DNOWEX
|
|
"punpckldq %%mm1, %%mm2\n\t"
|
|
"punpckhdq %%mm2, %%mm1\n\t"
|
|
#else
|
|
"pswapd %%mm1, %%mm1\n\t" /* ac3_buf[i].re | ac3_buf[i].im */
|
|
#endif
|
|
"movd %3, %%mm3\n\t" /* ac3_xsin[i] */
|
|
"punpckldq %2, %%mm3\n\t" /* ac3_xsin[i] | ac3_xcos[i] */
|
|
"pfmul %%mm3, %%mm0\n\t"
|
|
"pfmul %%mm3, %%mm1\n\t"
|
|
#ifndef HAVE_3DNOWEX
|
|
"pxor %%mm7, %%mm0\n\t"
|
|
"pfacc %%mm1, %%mm0\n\t"
|
|
"punpckldq %%mm0, %%mm1\n\t"
|
|
"punpckhdq %%mm1, %%mm0\n\t"
|
|
"movq %%mm0, %0\n\t"
|
|
#else
|
|
"pfpnacc %%mm1, %%mm0\n\t" /* mm0 = mm0[0] - mm0[1] | mm1[0] + mm1[1] */
|
|
"pswapd %%mm0, %%mm0\n\t"
|
|
"movq %%mm0, %0"
|
|
#endif
|
|
:"=m"(buf[i])
|
|
:"m"(buf[i]),"m"(xcos1[i]),"m"(xsin1[i])
|
|
:"memory");
|
|
/* ac3_buf[i].re =(tmp_a_r * ac3_xcos1[i]) + (tmp_a_i * ac3_xsin1[i]);
|
|
ac3_buf[i].im =(tmp_a_r * ac3_xsin1[i]) - (tmp_a_i * ac3_xcos1[i]);*/
|
|
}
|
|
#else
|
|
__asm__ __volatile__ ("femms":::"memory");
|
|
for( i=0; i < 128; i++) {
|
|
/* y[n] = z[n] * (xcos1[n] + j * xsin1[n]) ; */
|
|
tmp_a_r = buf[i].real;
|
|
tmp_a_i = -1.0 * buf[i].imag;
|
|
buf[i].real =(tmp_a_r * xcos1[i]) - (tmp_a_i * xsin1[i]);
|
|
buf[i].imag =(tmp_a_r * xsin1[i]) + (tmp_a_i * xcos1[i]);
|
|
}
|
|
#endif
|
|
|
|
data_ptr = data;
|
|
delay_ptr = delay;
|
|
window_ptr = a52_imdct_window;
|
|
|
|
/* Window and convert to real valued signal */
|
|
#if 1
|
|
asm volatile (
|
|
"movd (%0), %%mm3 \n\t"
|
|
"punpckldq %%mm3, %%mm3 \n\t"
|
|
:: "r" (&bias)
|
|
);
|
|
for (i=0; i< 64; i++) {
|
|
/* merge two loops in one to enable working of 2 decoders */
|
|
__asm__ __volatile__ (
|
|
"movd 516(%1), %%mm0\n\t"
|
|
"movd (%1), %%mm1\n\t" /**data_ptr++=-buf[64+i].im**window_ptr+++*delay_ptr++;*/
|
|
"punpckldq (%2), %%mm0\n\t"/*data_ptr[128]=-buf[i].re*window_ptr[128]+delay_ptr[128];*/
|
|
"punpckldq 516(%2), %%mm1\n\t"
|
|
"pfmul (%3), %%mm0\n\t"/**data_ptr++=buf[64-i-1].re**window_ptr+++*delay_ptr++;*/
|
|
"pfmul 512(%3), %%mm1\n\t"
|
|
"pxor %%mm6, %%mm0\n\t"/*data_ptr[128]=buf[128-i-1].im*window_ptr[128]+delay_ptr[128];*/
|
|
"pxor %%mm6, %%mm1\n\t"
|
|
"pfadd (%4), %%mm0\n\t"
|
|
"pfadd 512(%4), %%mm1\n\t"
|
|
"pfadd %%mm3, %%mm0\n\t"
|
|
"pfadd %%mm3, %%mm1\n\t"
|
|
"movq %%mm0, (%0)\n\t"
|
|
"movq %%mm1, 512(%0)"
|
|
:"=r"(data_ptr)
|
|
:"r"(&buf[i].real), "r"(&buf[64-i-1].real), "r"(window_ptr), "r"(delay_ptr), "0"(data_ptr)
|
|
:"memory");
|
|
data_ptr += 2;
|
|
window_ptr += 2;
|
|
delay_ptr += 2;
|
|
}
|
|
window_ptr += 128;
|
|
#else
|
|
__asm__ __volatile__ ("femms":::"memory");
|
|
for(i=0; i< 64; i++) {
|
|
*data_ptr++ = -buf[64+i].imag * *window_ptr++ + *delay_ptr++ + bias;
|
|
*data_ptr++ = buf[64-i-1].real * *window_ptr++ + *delay_ptr++ + bias;
|
|
}
|
|
|
|
for(i=0; i< 64; i++) {
|
|
*data_ptr++ = -buf[i].real * *window_ptr++ + *delay_ptr++ + bias;
|
|
*data_ptr++ = buf[128-i-1].imag * *window_ptr++ + *delay_ptr++ + bias;
|
|
}
|
|
#endif
|
|
|
|
/* The trailing edge of the window goes into the delay line */
|
|
delay_ptr = delay;
|
|
#if 1
|
|
for(i=0; i< 64; i++) {
|
|
/* merge two loops in one to enable working of 2 decoders */
|
|
window_ptr -=2;
|
|
__asm__ __volatile__(
|
|
"movd 508(%1), %%mm0\n\t"
|
|
"movd (%1), %%mm1\n\t"
|
|
"punpckldq (%2), %%mm0\n\t"
|
|
"punpckldq 508(%2), %%mm1\n\t"
|
|
#ifdef HAVE_3DNOWEX
|
|
"pswapd (%3), %%mm3\n\t"
|
|
"pswapd -512(%3), %%mm4\n\t"
|
|
#else
|
|
"movq (%3), %%mm3\n\t"
|
|
"punpckldq %%mm3, %%mm2\n\t"
|
|
"punpckhdq %%mm2, %%mm3\n\t"
|
|
"movq -512(%3), %%mm4\n\t"
|
|
"punpckldq %%mm4, %%mm2\n\t"
|
|
"punpckhdq %%mm2, %%mm4\n\t"
|
|
#endif
|
|
"pfmul %%mm3, %%mm0\n\t"
|
|
"pfmul %%mm4, %%mm1\n\t"
|
|
"pxor %%mm6, %%mm0\n\t"
|
|
"pxor %%mm7, %%mm1\n\t"
|
|
"movq %%mm0, (%0)\n\t"
|
|
"movq %%mm1, 512(%0)"
|
|
:"=r"(delay_ptr)
|
|
:"r"(&buf[i].imag), "r"(&buf[64-i-1].imag), "r"(window_ptr), "0"(delay_ptr)
|
|
:"memory");
|
|
delay_ptr += 2;
|
|
}
|
|
__asm__ __volatile__ ("femms":::"memory");
|
|
#else
|
|
__asm__ __volatile__ ("femms":::"memory");
|
|
for(i=0; i< 64; i++) {
|
|
*delay_ptr++ = -buf[64+i].real * *--window_ptr;
|
|
*delay_ptr++ = buf[64-i-1].imag * *--window_ptr;
|
|
}
|
|
|
|
for(i=0; i<64; i++) {
|
|
*delay_ptr++ = buf[i].imag * *--window_ptr;
|
|
*delay_ptr++ = -buf[128-i-1].real * *--window_ptr;
|
|
}
|
|
#endif
|
|
}
|