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vf_spp.c
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vf_spp.c
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/*
* Copyright (c) 2003 Michael Niedermayer <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* FFmpeg 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with FFmpeg; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavutil/crc.h"
#include "libavutil/mem.h"
#include "libavutil/x86/asm.h"
#include "libavfilter/vf_spp.h"
#if HAVE_MMX_INLINE
static void hardthresh_mmx(int16_t dst[64], const int16_t src[64],
int qp, const uint8_t *permutation)
{
int bias = 0; //FIXME
unsigned int threshold1;
threshold1 = qp * ((1<<4) - bias) - 1;
#define REQUANT_CORE(dst0, dst1, dst2, dst3, src0, src1, src2, src3) \
"movq " #src0 ", %%mm0 \n" \
"movq " #src1 ", %%mm1 \n" \
"movq " #src2 ", %%mm2 \n" \
"movq " #src3 ", %%mm3 \n" \
"psubw %%mm4, %%mm0 \n" \
"psubw %%mm4, %%mm1 \n" \
"psubw %%mm4, %%mm2 \n" \
"psubw %%mm4, %%mm3 \n" \
"paddusw %%mm5, %%mm0 \n" \
"paddusw %%mm5, %%mm1 \n" \
"paddusw %%mm5, %%mm2 \n" \
"paddusw %%mm5, %%mm3 \n" \
"paddw %%mm6, %%mm0 \n" \
"paddw %%mm6, %%mm1 \n" \
"paddw %%mm6, %%mm2 \n" \
"paddw %%mm6, %%mm3 \n" \
"psubusw %%mm6, %%mm0 \n" \
"psubusw %%mm6, %%mm1 \n" \
"psubusw %%mm6, %%mm2 \n" \
"psubusw %%mm6, %%mm3 \n" \
"psraw $3, %%mm0 \n" \
"psraw $3, %%mm1 \n" \
"psraw $3, %%mm2 \n" \
"psraw $3, %%mm3 \n" \
\
"movq %%mm0, %%mm7 \n" \
"punpcklwd %%mm2, %%mm0 \n" /*A*/ \
"punpckhwd %%mm2, %%mm7 \n" /*C*/ \
"movq %%mm1, %%mm2 \n" \
"punpcklwd %%mm3, %%mm1 \n" /*B*/ \
"punpckhwd %%mm3, %%mm2 \n" /*D*/ \
"movq %%mm0, %%mm3 \n" \
"punpcklwd %%mm1, %%mm0 \n" /*A*/ \
"punpckhwd %%mm7, %%mm3 \n" /*C*/ \
"punpcklwd %%mm2, %%mm7 \n" /*B*/ \
"punpckhwd %%mm2, %%mm1 \n" /*D*/ \
\
"movq %%mm0, " #dst0 " \n" \
"movq %%mm7, " #dst1 " \n" \
"movq %%mm3, " #dst2 " \n" \
"movq %%mm1, " #dst3 " \n"
__asm__ volatile(
"movd %2, %%mm4 \n"
"movd %3, %%mm5 \n"
"movd %4, %%mm6 \n"
"packssdw %%mm4, %%mm4 \n"
"packssdw %%mm5, %%mm5 \n"
"packssdw %%mm6, %%mm6 \n"
"packssdw %%mm4, %%mm4 \n"
"packssdw %%mm5, %%mm5 \n"
"packssdw %%mm6, %%mm6 \n"
REQUANT_CORE( (%1), 8(%1), 16(%1), 24(%1), (%0), 8(%0), 64(%0), 72(%0))
REQUANT_CORE(32(%1), 40(%1), 48(%1), 56(%1),16(%0),24(%0), 48(%0), 56(%0))
REQUANT_CORE(64(%1), 72(%1), 80(%1), 88(%1),32(%0),40(%0), 96(%0),104(%0))
REQUANT_CORE(96(%1),104(%1),112(%1),120(%1),80(%0),88(%0),112(%0),120(%0))
: : "r" (src), "r" (dst), "g" (threshold1+1), "g" (threshold1+5), "g" (threshold1-4) //FIXME maybe more accurate then needed?
);
dst[0] = (src[0] + 4) >> 3;
}
static void softthresh_mmx(int16_t dst[64], const int16_t src[64],
int qp, const uint8_t *permutation)
{
int bias = 0; //FIXME
unsigned int threshold1;
threshold1 = qp*((1<<4) - bias) - 1;
#undef REQUANT_CORE
#define REQUANT_CORE(dst0, dst1, dst2, dst3, src0, src1, src2, src3) \
"movq " #src0 ", %%mm0 \n" \
"movq " #src1 ", %%mm1 \n" \
"pxor %%mm6, %%mm6 \n" \
"pxor %%mm7, %%mm7 \n" \
"pcmpgtw %%mm0, %%mm6 \n" \
"pcmpgtw %%mm1, %%mm7 \n" \
"pxor %%mm6, %%mm0 \n" \
"pxor %%mm7, %%mm1 \n" \
"psubusw %%mm4, %%mm0 \n" \
"psubusw %%mm4, %%mm1 \n" \
"pxor %%mm6, %%mm0 \n" \
"pxor %%mm7, %%mm1 \n" \
"movq " #src2 ", %%mm2 \n" \
"movq " #src3 ", %%mm3 \n" \
"pxor %%mm6, %%mm6 \n" \
"pxor %%mm7, %%mm7 \n" \
"pcmpgtw %%mm2, %%mm6 \n" \
"pcmpgtw %%mm3, %%mm7 \n" \
"pxor %%mm6, %%mm2 \n" \
"pxor %%mm7, %%mm3 \n" \
"psubusw %%mm4, %%mm2 \n" \
"psubusw %%mm4, %%mm3 \n" \
"pxor %%mm6, %%mm2 \n" \
"pxor %%mm7, %%mm3 \n" \
\
"paddsw %%mm5, %%mm0 \n" \
"paddsw %%mm5, %%mm1 \n" \
"paddsw %%mm5, %%mm2 \n" \
"paddsw %%mm5, %%mm3 \n" \
"psraw $3, %%mm0 \n" \
"psraw $3, %%mm1 \n" \
"psraw $3, %%mm2 \n" \
"psraw $3, %%mm3 \n" \
\
"movq %%mm0, %%mm7 \n" \
"punpcklwd %%mm2, %%mm0 \n" /*A*/ \
"punpckhwd %%mm2, %%mm7 \n" /*C*/ \
"movq %%mm1, %%mm2 \n" \
"punpcklwd %%mm3, %%mm1 \n" /*B*/ \
"punpckhwd %%mm3, %%mm2 \n" /*D*/ \
"movq %%mm0, %%mm3 \n" \
"punpcklwd %%mm1, %%mm0 \n" /*A*/ \
"punpckhwd %%mm7, %%mm3 \n" /*C*/ \
"punpcklwd %%mm2, %%mm7 \n" /*B*/ \
"punpckhwd %%mm2, %%mm1 \n" /*D*/ \
\
"movq %%mm0, " #dst0 " \n" \
"movq %%mm7, " #dst1 " \n" \
"movq %%mm3, " #dst2 " \n" \
"movq %%mm1, " #dst3 " \n"
__asm__ volatile(
"movd %2, %%mm4 \n"
"movd %3, %%mm5 \n"
"packssdw %%mm4, %%mm4 \n"
"packssdw %%mm5, %%mm5 \n"
"packssdw %%mm4, %%mm4 \n"
"packssdw %%mm5, %%mm5 \n"
REQUANT_CORE( (%1), 8(%1), 16(%1), 24(%1), (%0), 8(%0), 64(%0), 72(%0))
REQUANT_CORE(32(%1), 40(%1), 48(%1), 56(%1),16(%0),24(%0), 48(%0), 56(%0))
REQUANT_CORE(64(%1), 72(%1), 80(%1), 88(%1),32(%0),40(%0), 96(%0),104(%0))
REQUANT_CORE(96(%1),104(%1),112(%1),120(%1),80(%0),88(%0),112(%0),120(%0))
: : "r" (src), "r" (dst), "g" (threshold1), "rm" (4) //FIXME maybe more accurate then needed?
);
dst[0] = (src[0] + 4) >> 3;
}
static void store_slice_mmx(uint8_t *dst, const int16_t *src,
int dst_stride, int src_stride,
int width, int height, int log2_scale,
const uint8_t dither[8][8])
{
int y;
for (y = 0; y < height; y++) {
uint8_t *dst1 = dst;
const int16_t *src1 = src;
__asm__ volatile(
"movq (%3), %%mm3 \n"
"movq (%3), %%mm4 \n"
"movd %4, %%mm2 \n"
"pxor %%mm0, %%mm0 \n"
"punpcklbw %%mm0, %%mm3 \n"
"punpckhbw %%mm0, %%mm4 \n"
"psraw %%mm2, %%mm3 \n"
"psraw %%mm2, %%mm4 \n"
"movd %5, %%mm2 \n"
"1: \n"
"movq (%0), %%mm0 \n"
"movq 8(%0), %%mm1 \n"
"paddw %%mm3, %%mm0 \n"
"paddw %%mm4, %%mm1 \n"
"psraw %%mm2, %%mm0 \n"
"psraw %%mm2, %%mm1 \n"
"packuswb %%mm1, %%mm0 \n"
"movq %%mm0, (%1) \n"
"add $16, %0 \n"
"add $8, %1 \n"
"cmp %2, %1 \n"
" jb 1b \n"
: "+r" (src1), "+r"(dst1)
: "r"(dst + width), "r"(dither[y]), "g"(log2_scale), "g"(MAX_LEVEL - log2_scale)
);
src += src_stride;
dst += dst_stride;
}
}
#endif /* HAVE_MMX_INLINE */
av_cold void ff_spp_init_x86(SPPContext *s)
{
#if HAVE_MMX_INLINE
int cpu_flags = av_get_cpu_flags();
if (cpu_flags & AV_CPU_FLAG_MMX) {
static const uint32_t mmx_idct_perm_crc = 0xe5e8adc4;
uint32_t idct_perm_crc =
av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0,
s->dct->idct_permutation,
sizeof(s->dct->idct_permutation));
int64_t bps;
s->store_slice = store_slice_mmx;
av_opt_get_int(s->dct, "bits_per_sample", 0, &bps);
if (bps <= 8 && idct_perm_crc == mmx_idct_perm_crc) {
switch (s->mode) {
case 0: s->requantize = hardthresh_mmx; break;
case 1: s->requantize = softthresh_mmx; break;
}
}
}
#endif
}