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/*
* The simplest mpeg encoder (well, it was the simplest!)
* Copyright (c) 2000,2001 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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/mem_internal.h"
#include "libavutil/x86/asm.h"
#include "libavutil/x86/cpu.h"
#include "libavcodec/avcodec.h"
#include "libavcodec/dct.h"
#include "libavcodec/mpegvideoenc.h"
/* not permutated inverse zigzag_direct + 1 for MMX quantizer */
DECLARE_ALIGNED(16, static const uint16_t, inv_zigzag_direct16)[64] = {
1, 2, 6, 7, 15, 16, 28, 29,
3, 5, 8, 14, 17, 27, 30, 43,
4, 9, 13, 18, 26, 31, 42, 44,
10, 12, 19, 25, 32, 41, 45, 54,
11, 20, 24, 33, 40, 46, 53, 55,
21, 23, 34, 39, 47, 52, 56, 61,
22, 35, 38, 48, 51, 57, 60, 62,
36, 37, 49, 50, 58, 59, 63, 64,
};
#if HAVE_6REGS
#if HAVE_SSE2_INLINE
#undef COMPILE_TEMPLATE_SSE2
#undef COMPILE_TEMPLATE_SSSE3
#define COMPILE_TEMPLATE_SSE2 1
#define COMPILE_TEMPLATE_SSSE3 0
#undef RENAME
#undef RENAME_FDCT
#define RENAME(a) a ## _sse2
#define RENAME_FDCT(a) a ## _sse2
#include "mpegvideoenc_template.c"
#endif /* HAVE_SSE2_INLINE */
#if HAVE_SSSE3_INLINE
#undef COMPILE_TEMPLATE_SSE2
#undef COMPILE_TEMPLATE_SSSE3
#define COMPILE_TEMPLATE_SSE2 1
#define COMPILE_TEMPLATE_SSSE3 1
#undef RENAME
#undef RENAME_FDCT
#define RENAME(a) a ## _ssse3
#define RENAME_FDCT(a) a ## _sse2
#include "mpegvideoenc_template.c"
#endif /* HAVE_SSSE3_INLINE */
#endif /* HAVE_6REGS */
#if HAVE_INLINE_ASM
#if HAVE_SSE2_INLINE
static void denoise_dct_sse2(MpegEncContext *s, int16_t *block){
const int intra= s->mb_intra;
int *sum= s->dct_error_sum[intra];
uint16_t *offset= s->dct_offset[intra];
s->dct_count[intra]++;
__asm__ volatile(
"pxor %%xmm7, %%xmm7 \n\t"
"1: \n\t"
"pxor %%xmm0, %%xmm0 \n\t"
"pxor %%xmm1, %%xmm1 \n\t"
"movdqa (%0), %%xmm2 \n\t"
"movdqa 16(%0), %%xmm3 \n\t"
"pcmpgtw %%xmm2, %%xmm0 \n\t"
"pcmpgtw %%xmm3, %%xmm1 \n\t"
"pxor %%xmm0, %%xmm2 \n\t"
"pxor %%xmm1, %%xmm3 \n\t"
"psubw %%xmm0, %%xmm2 \n\t"
"psubw %%xmm1, %%xmm3 \n\t"
"movdqa %%xmm2, %%xmm4 \n\t"
"movdqa %%xmm3, %%xmm5 \n\t"
"psubusw (%2), %%xmm2 \n\t"
"psubusw 16(%2), %%xmm3 \n\t"
"pxor %%xmm0, %%xmm2 \n\t"
"pxor %%xmm1, %%xmm3 \n\t"
"psubw %%xmm0, %%xmm2 \n\t"
"psubw %%xmm1, %%xmm3 \n\t"
"movdqa %%xmm2, (%0) \n\t"
"movdqa %%xmm3, 16(%0) \n\t"
"movdqa %%xmm4, %%xmm6 \n\t"
"movdqa %%xmm5, %%xmm0 \n\t"
"punpcklwd %%xmm7, %%xmm4 \n\t"
"punpckhwd %%xmm7, %%xmm6 \n\t"
"punpcklwd %%xmm7, %%xmm5 \n\t"
"punpckhwd %%xmm7, %%xmm0 \n\t"
"paddd (%1), %%xmm4 \n\t"
"paddd 16(%1), %%xmm6 \n\t"
"paddd 32(%1), %%xmm5 \n\t"
"paddd 48(%1), %%xmm0 \n\t"
"movdqa %%xmm4, (%1) \n\t"
"movdqa %%xmm6, 16(%1) \n\t"
"movdqa %%xmm5, 32(%1) \n\t"
"movdqa %%xmm0, 48(%1) \n\t"
"add $32, %0 \n\t"
"add $64, %1 \n\t"
"add $32, %2 \n\t"
"cmp %3, %0 \n\t"
" jb 1b \n\t"
: "+r" (block), "+r" (sum), "+r" (offset)
: "r"(block+64)
XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3",
"%xmm4", "%xmm5", "%xmm6", "%xmm7")
);
}
#endif /* HAVE_SSE2_INLINE */
#endif /* HAVE_INLINE_ASM */
av_cold void ff_dct_encode_init_x86(MpegEncContext *s)
{
const int dct_algo = s->avctx->dct_algo;
if (dct_algo == FF_DCT_AUTO || dct_algo == FF_DCT_MMX) {
#if HAVE_MMX_INLINE
int cpu_flags = av_get_cpu_flags();
#if HAVE_SSE2_INLINE
if (INLINE_SSE2(cpu_flags)) {
#if HAVE_6REGS
s->dct_quantize = dct_quantize_sse2;
#endif
s->denoise_dct = denoise_dct_sse2;
}
#endif
#if HAVE_6REGS && HAVE_SSSE3_INLINE
if (INLINE_SSSE3(cpu_flags))
s->dct_quantize = dct_quantize_ssse3;
#endif
#endif
}
}
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