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FFmpeg/libavcodec/x86/idctdsp_init.c
Andreas Rheinhardt bfb28b5ce8 avcodec/x86/idctdsp: Remove obsolete MMX(EXT) functions
x64 always has MMX, MMXEXT, SSE and SSE2 and this means
that some functions for MMX, MMXEXT and 3dnow are always
overridden by other functions (unless one e.g. explicitly
disables SSE2) for x64. So given that the only systems that
benefit from these functions are truely ancient 32bit x86s
they are removed.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-06-22 13:33:27 +02:00

160 lines
5.8 KiB
C

/*
* 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/idctdsp.h"
#include "idctdsp.h"
#include "simple_idct.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,
enum idct_permutation_type perm_type)
{
int i;
switch (perm_type) {
case FF_IDCT_PERM_SIMPLE:
for (i = 0; i < 64; i++)
idct_permutation[i] = simple_mmx_permutation[i];
return 1;
case FF_IDCT_PERM_SSE2:
for (i = 0; i < 64; i++)
idct_permutation[i] = (i & 0x38) | idct_sse2_row_perm[i & 7];
return 1;
}
return 0;
}
av_cold void ff_idctdsp_init_x86(IDCTDSPContext *c, AVCodecContext *avctx,
unsigned high_bit_depth)
{
int cpu_flags = av_get_cpu_flags();
#if ARCH_X86_32
if (EXTERNAL_MMX(cpu_flags)) {
if (!high_bit_depth &&
avctx->lowres == 0 &&
(avctx->idct_algo == FF_IDCT_AUTO ||
avctx->idct_algo == FF_IDCT_SIMPLEAUTO ||
avctx->idct_algo == FF_IDCT_SIMPLEMMX)) {
c->idct = ff_simple_idct_mmx;
}
}
#endif
if (EXTERNAL_SSE2(cpu_flags)) {
c->put_signed_pixels_clamped = ff_put_signed_pixels_clamped_sse2;
c->put_pixels_clamped = ff_put_pixels_clamped_sse2;
c->add_pixels_clamped = ff_add_pixels_clamped_sse2;
#if ARCH_X86_32
if (!high_bit_depth &&
avctx->lowres == 0 &&
(avctx->idct_algo == FF_IDCT_AUTO ||
avctx->idct_algo == FF_IDCT_SIMPLEAUTO ||
avctx->idct_algo == FF_IDCT_SIMPLEMMX)) {
c->idct_put = ff_simple_idct_put_sse2;
c->idct_add = ff_simple_idct_add_sse2;
c->perm_type = FF_IDCT_PERM_SIMPLE;
}
#endif
if (ARCH_X86_64 &&
!high_bit_depth &&
avctx->lowres == 0 &&
(avctx->idct_algo == FF_IDCT_AUTO ||
avctx->idct_algo == FF_IDCT_SIMPLEAUTO ||
avctx->idct_algo == FF_IDCT_SIMPLEMMX ||
avctx->idct_algo == FF_IDCT_SIMPLE)) {
c->idct = ff_simple_idct8_sse2;
c->idct_put = ff_simple_idct8_put_sse2;
c->idct_add = ff_simple_idct8_add_sse2;
c->perm_type = FF_IDCT_PERM_TRANSPOSE;
}
}
if (ARCH_X86_64 && avctx->lowres == 0) {
if (EXTERNAL_AVX(cpu_flags) &&
!high_bit_depth &&
(avctx->idct_algo == FF_IDCT_AUTO ||
avctx->idct_algo == FF_IDCT_SIMPLEAUTO ||
avctx->idct_algo == FF_IDCT_SIMPLEMMX ||
avctx->idct_algo == FF_IDCT_SIMPLE)) {
c->idct = ff_simple_idct8_avx;
c->idct_put = ff_simple_idct8_put_avx;
c->idct_add = ff_simple_idct8_add_avx;
c->perm_type = FF_IDCT_PERM_TRANSPOSE;
}
if (avctx->bits_per_raw_sample == 10 &&
avctx->codec_id != AV_CODEC_ID_MPEG4 &&
(avctx->idct_algo == FF_IDCT_AUTO ||
avctx->idct_algo == FF_IDCT_SIMPLEAUTO ||
avctx->idct_algo == FF_IDCT_SIMPLE)) {
if (EXTERNAL_SSE2(cpu_flags)) {
c->idct_put = ff_simple_idct10_put_sse2;
c->idct_add = NULL;
c->idct = ff_simple_idct10_sse2;
c->perm_type = FF_IDCT_PERM_TRANSPOSE;
}
if (EXTERNAL_AVX(cpu_flags)) {
c->idct_put = ff_simple_idct10_put_avx;
c->idct_add = NULL;
c->idct = ff_simple_idct10_avx;
c->perm_type = FF_IDCT_PERM_TRANSPOSE;
}
}
if (avctx->bits_per_raw_sample == 12 &&
(avctx->idct_algo == FF_IDCT_AUTO ||
avctx->idct_algo == FF_IDCT_SIMPLEMMX)) {
if (EXTERNAL_SSE2(cpu_flags)) {
c->idct_put = ff_simple_idct12_put_sse2;
c->idct_add = NULL;
c->idct = ff_simple_idct12_sse2;
c->perm_type = FF_IDCT_PERM_TRANSPOSE;
}
if (EXTERNAL_AVX(cpu_flags)) {
c->idct_put = ff_simple_idct12_put_avx;
c->idct_add = NULL;
c->idct = ff_simple_idct12_avx;
c->perm_type = FF_IDCT_PERM_TRANSPOSE;
}
}
}
}