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/*
* Copyright (c) 2000, 2001 Fabrice Bellard
* Copyright (c) 2002-2004 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 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 "config.h"
#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavutil/x86/cpu.h"
#include "libavcodec/avcodec.h"
#include "libavcodec/dsputil.h"
#include "libavcodec/simple_idct.h"
#include "dsputil_x86.h"
#include "idct_xvid.h"
/* Input permutation for the simple_idct_mmx */
static const uint8_t simple_mmx_permutation[64] = {
0x00, 0x08, 0x04, 0x09, 0x01, 0x0C, 0x05, 0x0D,
0x10, 0x18, 0x14, 0x19, 0x11, 0x1C, 0x15, 0x1D,
0x20, 0x28, 0x24, 0x29, 0x21, 0x2C, 0x25, 0x2D,
0x12, 0x1A, 0x16, 0x1B, 0x13, 0x1E, 0x17, 0x1F,
0x02, 0x0A, 0x06, 0x0B, 0x03, 0x0E, 0x07, 0x0F,
0x30, 0x38, 0x34, 0x39, 0x31, 0x3C, 0x35, 0x3D,
0x22, 0x2A, 0x26, 0x2B, 0x23, 0x2E, 0x27, 0x2F,
0x32, 0x3A, 0x36, 0x3B, 0x33, 0x3E, 0x37, 0x3F,
};
static const uint8_t idct_sse2_row_perm[8] = { 0, 4, 1, 5, 2, 6, 3, 7 };
av_cold int ff_init_scantable_permutation_x86(uint8_t *idct_permutation,
int idct_permutation_type)
{
int i;
switch (idct_permutation_type) {
case FF_SIMPLE_IDCT_PERM:
for (i = 0; i < 64; i++)
idct_permutation[i] = simple_mmx_permutation[i];
return 1;
case FF_SSE2_IDCT_PERM:
for (i = 0; i < 64; i++)
idct_permutation[i] = (i & 0x38) | idct_sse2_row_perm[i & 7];
return 1;
}
return 0;
}
static av_cold void dsputil_init_mmx(DSPContext *c, AVCodecContext *avctx,
int cpu_flags, unsigned high_bit_depth)
{
#if HAVE_MMX_INLINE
c->put_pixels_clamped = ff_put_pixels_clamped_mmx;
c->add_pixels_clamped = ff_add_pixels_clamped_mmx;
if (!high_bit_depth) {
c->draw_edges = ff_draw_edges_mmx;
}
if (avctx->lowres == 0 && !high_bit_depth) {
switch (avctx->idct_algo) {
case FF_IDCT_AUTO:
case FF_IDCT_SIMPLEAUTO:
case FF_IDCT_SIMPLEMMX:
c->idct_put = ff_simple_idct_put_mmx;
c->idct_add = ff_simple_idct_add_mmx;
c->idct = ff_simple_idct_mmx;
c->idct_permutation_type = FF_SIMPLE_IDCT_PERM;
break;
case FF_IDCT_XVIDMMX:
c->idct_put = ff_idct_xvid_mmx_put;
c->idct_add = ff_idct_xvid_mmx_add;
c->idct = ff_idct_xvid_mmx;
break;
}
}
#endif /* HAVE_MMX_INLINE */
#if HAVE_MMX_EXTERNAL
c->put_signed_pixels_clamped = ff_put_signed_pixels_clamped_mmx;
#endif /* HAVE_MMX_EXTERNAL */
}
static av_cold void dsputil_init_mmxext(DSPContext *c, AVCodecContext *avctx,
int cpu_flags, unsigned high_bit_depth)
{
#if HAVE_MMXEXT_INLINE
if (!high_bit_depth && avctx->idct_algo == FF_IDCT_XVIDMMX && avctx->lowres == 0) {
c->idct_put = ff_idct_xvid_mmxext_put;
c->idct_add = ff_idct_xvid_mmxext_add;
c->idct = ff_idct_xvid_mmxext;
}
#endif /* HAVE_MMXEXT_INLINE */
}
static av_cold void dsputil_init_sse2(DSPContext *c, AVCodecContext *avctx,
int cpu_flags, unsigned high_bit_depth)
{
#if HAVE_SSE2_INLINE
if (!high_bit_depth && avctx->idct_algo == FF_IDCT_XVIDMMX && avctx->lowres == 0) {
c->idct_put = ff_idct_xvid_sse2_put;
c->idct_add = ff_idct_xvid_sse2_add;
c->idct = ff_idct_xvid_sse2;
c->idct_permutation_type = FF_SSE2_IDCT_PERM;
}
#endif /* HAVE_SSE2_INLINE */
#if HAVE_SSE2_EXTERNAL
c->put_signed_pixels_clamped = ff_put_signed_pixels_clamped_sse2;
#endif /* HAVE_SSE2_EXTERNAL */
}
av_cold void ff_dsputil_init_x86(DSPContext *c, AVCodecContext *avctx,
unsigned high_bit_depth)
{
int cpu_flags = av_get_cpu_flags();
if (X86_MMX(cpu_flags))
dsputil_init_mmx(c, avctx, cpu_flags, high_bit_depth);
if (X86_MMXEXT(cpu_flags))
dsputil_init_mmxext(c, avctx, cpu_flags, high_bit_depth);
if (X86_SSE2(cpu_flags))
dsputil_init_sse2(c, avctx, cpu_flags, high_bit_depth);
if (CONFIG_ENCODERS)
ff_dsputilenc_init_mmx(c, avctx, high_bit_depth);
}
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