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/*
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
*
* 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 "libavfilter/vf_spp.h"
#if HAVE_MMX_INLINE
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) {
s->store_slice = store_slice_mmx;
}
#endif
}
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