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SSE optimized 32-point DCT

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Originally committed as revision 24077 to svn://svn.ffmpeg.org/ffmpeg/trunk
oldabi
Vitor Sessak 15 years ago
parent defb0009cf
commit 4dcc4f8eaa
5 changed files with 278 additions and 0 deletions
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  1. 2
      libavcodec/dct.c
  2. 1
      libavcodec/fft.h
  3. 8
      libavcodec/x86/fft.c
  4. 1
      libavcodec/x86/fft.h
  5. 266
      libavcodec/x86/fft_sse.c

2
libavcodec/dct.c
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@ -30,6 +30,7 @@
#include <math.h>
#include "libavutil/mathematics.h"
#include "fft.h"
#include "x86/fft.h"
#define DCT32_FLOAT
#include "dct32.c"
@ -213,6 +214,7 @@ av_cold int ff_dct_init(DCTContext *s, int nbits, enum DCTTransformType inverse)
s->dct_calc = dct32_func;
s->dct32 = dct32;
if (HAVE_MMX) ff_dct_init_mmx(s);
return 0;
}

1
libavcodec/fft.h
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@ -112,6 +112,7 @@ void ff_fft_calc_c(FFTContext *s, FFTComplex *z);
void ff_fft_init_altivec(FFTContext *s);
void ff_fft_init_mmx(FFTContext *s);
void ff_fft_init_arm(FFTContext *s);
void ff_dct_init_mmx(DCTContext *s);
/**
* Do the permutation needed BEFORE calling ff_fft_calc().

8
libavcodec/x86/fft.c
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@ -42,3 +42,11 @@ av_cold void ff_fft_init_mmx(FFTContext *s)
}
#endif
}
av_cold void ff_dct_init_mmx(DCTContext *s)
{
int has_vectors = mm_support();
if (has_vectors & FF_MM_SSE && HAVE_SSE)
s->dct32 = ff_dct32_float_sse;
}

1
libavcodec/x86/fft.h
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@ -32,5 +32,6 @@ void ff_imdct_calc_3dn2(FFTContext *s, FFTSample *output, const FFTSample *input
void ff_imdct_half_3dn2(FFTContext *s, FFTSample *output, const FFTSample *input);
void ff_imdct_calc_sse(FFTContext *s, FFTSample *output, const FFTSample *input);
void ff_imdct_half_sse(FFTContext *s, FFTSample *output, const FFTSample *input);
void ff_dct32_float_sse(FFTSample *out, const FFTSample *in);
#endif

266
libavcodec/x86/fft_sse.c
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@ -20,6 +20,7 @@
*/
#include "libavutil/x86_cpu.h"
#include "libavutil/common.h"
#include "libavcodec/dsputil.h"
#include "fft.h"
@ -201,3 +202,268 @@ void ff_imdct_calc_sse(FFTContext *s, FFTSample *output, const FFTSample *input)
);
}
DECLARE_ALIGNED(16, static const float, b1)[] = {
0.500603, 0.505471, 0.515447, 0.531043,
0.553104, 0.582935, 0.622504, 0.674808,
-1.169440, -0.972568, -0.839350, -0.744536,
-10.190008, -3.407609, -2.057781, -1.484165,
0.502419, 0.522499, 0.566944, 0.646822,
0.788155, 1.060678, 1.722447, 5.101149,
0.509796, 0.601345, 0.899976, 2.562916,
1.000000, 1.000000, 1.306563, 0.541196,
1.000000, 0.707107, 1.000000, -0.707107
};
DECLARE_ALIGNED(16, static const int32_t, smask)[4] = {
0, 0, 0x80000000, 0x80000000
};
/* butterfly operator */
#define BUTTERFLY(a,b,c,tmp) \
"movaps %%" #a ", %%" #tmp " \n\t" \
"subps %%" #b ", %%" #a " \n\t" \
"addps %%" #tmp ", %%" #b " \n\t" \
"mulps " #c ", %%" #a " \n\t"
///* Same as BUTTERFLY when vectors a and b overlap */
#define BUTTERFLY0(val, mask, cos, tmp, shuf) \
"movaps %%" #val ", %%" #tmp " \n\t" \
"shufps " #shuf ", %%" #val ",%%" #val " \n\t" \
"xorps %%" #mask ", %%" #tmp " \n\t" /* flip signs */ \
"addps %%" #tmp ", %%" #val " \n\t" \
"mulps %%" #cos ", %%" #val " \n\t"
#define BUTTERFLY2(val, mask, cos, tmp) BUTTERFLY0(val, mask, cos, tmp, $0x1b)
#define BUTTERFLY3(val, mask, cos, tmp) BUTTERFLY0(val, mask, cos, tmp, $0xb1)
void ff_dct32_float_sse(FFTSample *out, const FFTSample *in)
{
int32_t tmp1 = 0;
__asm__ volatile(
/* pass 1 */
"movaps (%4), %%xmm0 \n\t"
"movaps 112(%4), %%xmm1 \n\t"
"shufps $0x1b, %%xmm1, %%xmm1 \n\t"
BUTTERFLY(xmm0, xmm1, (%2), xmm3)
"movaps 64(%4), %%xmm7 \n\t"
"movaps 48(%4), %%xmm4 \n\t"
"shufps $0x1b, %%xmm4, %%xmm4 \n\t"
BUTTERFLY(xmm7, xmm4, 48(%2), xmm3)
/* pass 2 */
"movaps 64(%2), %%xmm2 \n\t"
BUTTERFLY(xmm1, xmm4, %%xmm2, xmm3)
"movaps %%xmm1, 48(%1) \n\t"
"movaps %%xmm4, (%1) \n\t"
/* pass 1 */
"movaps 16(%4), %%xmm1 \n\t"
"movaps 96(%4), %%xmm6 \n\t"
"shufps $0x1b, %%xmm6, %%xmm6 \n\t"
BUTTERFLY(xmm1, xmm6, 16(%2), xmm3)
"movaps 80(%4), %%xmm4 \n\t"
"movaps 32(%4), %%xmm5 \n\t"
"shufps $0x1b, %%xmm5, %%xmm5 \n\t"
BUTTERFLY(xmm4, xmm5, 32(%2), xmm3)
/* pass 2 */
BUTTERFLY(xmm0, xmm7, %%xmm2, xmm3)
"movaps 80(%2), %%xmm2 \n\t"
BUTTERFLY(xmm6, xmm5, %%xmm2, xmm3)
BUTTERFLY(xmm1, xmm4, %%xmm2, xmm3)
/* pass 3 */
"movaps 96(%2), %%xmm2 \n\t"
"shufps $0x1b, %%xmm1, %%xmm1 \n\t"
BUTTERFLY(xmm0, xmm1, %%xmm2, xmm3)
"movaps %%xmm0, 112(%1) \n\t"
"movaps %%xmm1, 96(%1) \n\t"
"movaps 0(%1), %%xmm0 \n\t"
"shufps $0x1b, %%xmm5, %%xmm5 \n\t"
BUTTERFLY(xmm0, xmm5, %%xmm2, xmm3)
"movaps 48(%1), %%xmm1 \n\t"
"shufps $0x1b, %%xmm6, %%xmm6 \n\t"
BUTTERFLY(xmm1, xmm6, %%xmm2, xmm3)
"movaps %%xmm1, 48(%1) \n\t"
"shufps $0x1b, %%xmm4, %%xmm4 \n\t"
BUTTERFLY(xmm7, xmm4, %%xmm2, xmm3)
/* pass 4 */
"movaps (%3), %%xmm3 \n\t"
"movaps 112(%2), %%xmm2 \n\t"
BUTTERFLY2(xmm5, xmm3, xmm2, xmm1)
BUTTERFLY2(xmm0, xmm3, xmm2, xmm1)
"movaps %%xmm0, 16(%1) \n\t"
BUTTERFLY2(xmm6, xmm3, xmm2, xmm1)
"movaps %%xmm6, 32(%1) \n\t"
"movaps 48(%1), %%xmm0 \n\t"
BUTTERFLY2(xmm0, xmm3, xmm2, xmm1)
"movaps %%xmm0, 48(%1) \n\t"
BUTTERFLY2(xmm4, xmm3, xmm2, xmm1)
BUTTERFLY2(xmm7, xmm3, xmm2, xmm1)
"movaps 96(%1), %%xmm6 \n\t"
BUTTERFLY2(xmm6, xmm3, xmm2, xmm1)
"movaps 112(%1), %%xmm0 \n\t"
BUTTERFLY2(xmm0, xmm3, xmm2, xmm1)
/* pass 5 */
"movaps 128(%2), %%xmm2 \n\t"
"shufps $0xCC, %%xmm3,%%xmm3 \n\t"
BUTTERFLY3(xmm5, xmm3, xmm2, xmm1)
"movaps %%xmm5, (%1) \n\t"
"movaps 16(%1), %%xmm1 \n\t"
BUTTERFLY3(xmm1, xmm3, xmm2, xmm5)
"movaps %%xmm1, 16(%1) \n\t"
BUTTERFLY3(xmm4, xmm3, xmm2, xmm5)
"movaps %%xmm4, 64(%1) \n\t"
BUTTERFLY3(xmm7, xmm3, xmm2, xmm5)
"movaps %%xmm7, 80(%1) \n\t"
"movaps 32(%1), %%xmm5 \n\t"
BUTTERFLY3(xmm5, xmm3, xmm2, xmm7)
"movaps %%xmm5, 32(%1) \n\t"
"movaps 48(%1), %%xmm4 \n\t"
BUTTERFLY3(xmm4, xmm3, xmm2, xmm7)
"movaps %%xmm4, 48(%1) \n\t"
BUTTERFLY3(xmm6, xmm3, xmm2, xmm7)
"movaps %%xmm6, 96(%1) \n\t"
BUTTERFLY3(xmm0, xmm3, xmm2, xmm7)
"movaps %%xmm0, 112(%1) \n\t"
/* pass 6, no SIMD... */
"movss 56(%1), %%xmm3 \n\t"
"movl 4(%1), %0 \n\t"
"addss 60(%1), %%xmm3 \n\t"
"movss 72(%1), %%xmm7 \n\t"
"addss %%xmm3, %%xmm4 \n\t"
"movss 52(%1), %%xmm2 \n\t"
"addss %%xmm3, %%xmm2 \n\t"
"movss 24(%1), %%xmm3 \n\t"
"addss 28(%1), %%xmm3 \n\t"
"addss 76(%1), %%xmm7 \n\t"
"addss %%xmm3, %%xmm1 \n\t"
"addss %%xmm4, %%xmm5 \n\t"
"movss %%xmm1, 16(%1) \n\t"
"movss 20(%1), %%xmm1 \n\t"
"addss %%xmm3, %%xmm1 \n\t"
"movss 40(%1), %%xmm3 \n\t"
"movss %%xmm1, 48(%1) \n\t"
"addss 44(%1), %%xmm3 \n\t"
"movss 20(%1), %%xmm1 \n\t"
"addss %%xmm3, %%xmm4 \n\t"
"addss %%xmm2, %%xmm3 \n\t"
"addss 28(%1), %%xmm1 \n\t"
"movss %%xmm3, 40(%1) \n\t"
"addss 36(%1), %%xmm2 \n\t"
"movss 8(%1), %%xmm3 \n\t"
"movss %%xmm2, 56(%1) \n\t"
"addss 12(%1), %%xmm3 \n\t"
"movss %%xmm5, 8(%1) \n\t"
"movss %%xmm3, 32(%1) \n\t"
"movss 52(%1), %%xmm2 \n\t"
"movss 80(%1), %%xmm3 \n\t"
"movss 120(%1), %%xmm5 \n\t"
"movss %%xmm1, 80(%1) \n\t"
"movss %%xmm4, 24(%1) \n\t"
"addss 124(%1), %%xmm5 \n\t"
"movss 64(%1), %%xmm1 \n\t"
"addss 60(%1), %%xmm2 \n\t"
"addss %%xmm5, %%xmm0 \n\t"
"addss 116(%1), %%xmm5 \n\t"
"movl %0, 64(%1) \n\t"
"addss %%xmm0, %%xmm6 \n\t"
"addss %%xmm6, %%xmm1 \n\t"
"movl 12(%1), %0 \n\t"
"movss %%xmm1, 4(%1) \n\t"
"movss 88(%1), %%xmm1 \n\t"
"movl %0, 96(%1) \n\t"
"addss 92(%1), %%xmm1 \n\t"
"movss 104(%1), %%xmm4 \n\t"
"movl 28(%1), %0 \n\t"
"addss 108(%1), %%xmm4 \n\t"
"addss %%xmm4, %%xmm0 \n\t"
"addss %%xmm1, %%xmm3 \n\t"
"addss 84(%1), %%xmm1 \n\t"
"addss %%xmm5, %%xmm4 \n\t"
"addss %%xmm3, %%xmm6 \n\t"
"addss %%xmm0, %%xmm3 \n\t"
"addss %%xmm7, %%xmm0 \n\t"
"addss 100(%1), %%xmm5 \n\t"
"addss %%xmm4, %%xmm7 \n\t"
"movl %0, 112(%1) \n\t"
"movss %%xmm0, 28(%1) \n\t"
"movss 36(%1), %%xmm0 \n\t"
"movss %%xmm7, 36(%1) \n\t"
"addss %%xmm1, %%xmm4 \n\t"
"movss 116(%1), %%xmm7 \n\t"
"addss %%xmm2, %%xmm0 \n\t"
"addss 124(%1), %%xmm7 \n\t"
"movss %%xmm0, 72(%1) \n\t"
"movss 44(%1), %%xmm0 \n\t"
"movss %%xmm6, 12(%1) \n\t"
"movss %%xmm3, 20(%1) \n\t"
"addss %%xmm0, %%xmm2 \n\t"
"movss %%xmm4, 44(%1) \n\t"
"movss %%xmm2, 88(%1) \n\t"
"addss 60(%1), %%xmm0 \n\t"
"movl 60(%1), %0 \n\t"
"movl %0, 120(%1) \n\t"
"movss %%xmm0, 104(%1) \n\t"
"addss %%xmm5, %%xmm1 \n\t"
"addss 68(%1), %%xmm5 \n\t"
"movss %%xmm1, 52(%1) \n\t"
"movss %%xmm5, 60(%1) \n\t"
"movss 68(%1), %%xmm1 \n\t"
"movss 100(%1), %%xmm5 \n\t"
"addss %%xmm7, %%xmm5 \n\t"
"addss 108(%1), %%xmm7 \n\t"
"addss %%xmm5, %%xmm1 \n\t"
"movss 84(%1), %%xmm2 \n\t"
"addss 92(%1), %%xmm2 \n\t"
"addss %%xmm2, %%xmm5 \n\t"
"movss %%xmm1, 68(%1) \n\t"
"addss %%xmm7, %%xmm2 \n\t"
"movss 76(%1), %%xmm1 \n\t"
"movss %%xmm2, 84(%1) \n\t"
"movss %%xmm5, 76(%1) \n\t"
"movss 108(%1), %%xmm2 \n\t"
"addss %%xmm1, %%xmm7 \n\t"
"addss 124(%1), %%xmm2 \n\t"
"addss %%xmm2, %%xmm1 \n\t"
"addss 92(%1), %%xmm2 \n\t"
"movss %%xmm1, 100(%1) \n\t"
"movss %%xmm2, 108(%1) \n\t"
"movss 92(%1), %%xmm2 \n\t"
"movss %%xmm7, 92(%1) \n\t"
"addss 124(%1), %%xmm2 \n\t"
"movss %%xmm2, 116(%1) \n\t"
:"+&r"(tmp1)
:"r"(out), "r"(b1), "r"(smask), "r"(in)
:"memory"
);
}

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