2 * This file is part of FFmpeg.
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 #include "libavutil/attributes.h"
21 #include "libavutil/cpu.h"
22 #include "libavutil/x86/cpu.h"
23 #include "libavcodec/avcodec.h"
24 #include "libavcodec/idctdsp.h"
26 #include "simple_idct.h"
28 /* Input permutation for the simple_idct_mmx */
29 static const uint8_t simple_mmx_permutation[64] = {
30 0x00, 0x08, 0x04, 0x09, 0x01, 0x0C, 0x05, 0x0D,
31 0x10, 0x18, 0x14, 0x19, 0x11, 0x1C, 0x15, 0x1D,
32 0x20, 0x28, 0x24, 0x29, 0x21, 0x2C, 0x25, 0x2D,
33 0x12, 0x1A, 0x16, 0x1B, 0x13, 0x1E, 0x17, 0x1F,
34 0x02, 0x0A, 0x06, 0x0B, 0x03, 0x0E, 0x07, 0x0F,
35 0x30, 0x38, 0x34, 0x39, 0x31, 0x3C, 0x35, 0x3D,
36 0x22, 0x2A, 0x26, 0x2B, 0x23, 0x2E, 0x27, 0x2F,
37 0x32, 0x3A, 0x36, 0x3B, 0x33, 0x3E, 0x37, 0x3F,
40 static const uint8_t idct_sse2_row_perm[8] = { 0, 4, 1, 5, 2, 6, 3, 7 };
42 av_cold int ff_init_scantable_permutation_x86(uint8_t *idct_permutation,
43 enum idct_permutation_type perm_type)
48 case FF_IDCT_PERM_SIMPLE:
49 for (i = 0; i < 64; i++)
50 idct_permutation[i] = simple_mmx_permutation[i];
52 case FF_IDCT_PERM_SSE2:
53 for (i = 0; i < 64; i++)
54 idct_permutation[i] = (i & 0x38) | idct_sse2_row_perm[i & 7];
61 av_cold void ff_idctdsp_init_x86(IDCTDSPContext *c, AVCodecContext *avctx,
62 unsigned high_bit_depth)
64 int cpu_flags = av_get_cpu_flags();
66 if (EXTERNAL_MMX(cpu_flags)) {
67 c->put_signed_pixels_clamped = ff_put_signed_pixels_clamped_mmx;
68 c->put_pixels_clamped = ff_put_pixels_clamped_mmx;
69 c->add_pixels_clamped = ff_add_pixels_clamped_mmx;
71 if (INLINE_MMX(cpu_flags)) {
72 if (!high_bit_depth &&
74 (avctx->idct_algo == FF_IDCT_AUTO ||
75 avctx->idct_algo == FF_IDCT_SIMPLEAUTO ||
76 avctx->idct_algo == FF_IDCT_SIMPLEMMX)) {
77 c->idct_put = ff_simple_idct_put_mmx;
78 c->idct_add = ff_simple_idct_add_mmx;
79 c->idct = ff_simple_idct_mmx;
80 c->perm_type = FF_IDCT_PERM_SIMPLE;
85 if (EXTERNAL_SSE2(cpu_flags)) {
86 c->put_signed_pixels_clamped = ff_put_signed_pixels_clamped_sse2;
87 c->put_pixels_clamped = ff_put_pixels_clamped_sse2;
88 c->add_pixels_clamped = ff_add_pixels_clamped_sse2;
90 if (INLINE_SSE2(cpu_flags)) {
91 if (!high_bit_depth &&
93 (avctx->idct_algo == FF_IDCT_AUTO ||
94 avctx->idct_algo == FF_IDCT_SIMPLEAUTO ||
95 avctx->idct_algo == FF_IDCT_SIMPLEMMX)) {
96 c->idct_put = ff_simple_idct_put_sse2;
97 c->idct_add = ff_simple_idct_add_sse2;
98 c->perm_type = FF_IDCT_PERM_SIMPLE;
103 if (ARCH_X86_64 && avctx->lowres == 0) {
104 if (avctx->bits_per_raw_sample == 10 &&
105 (avctx->idct_algo == FF_IDCT_AUTO ||
106 avctx->idct_algo == FF_IDCT_SIMPLEAUTO ||
107 avctx->idct_algo == FF_IDCT_SIMPLE)) {
108 if (EXTERNAL_SSE2(cpu_flags)) {
109 c->idct_put = ff_simple_idct10_put_sse2;
111 c->idct = ff_simple_idct10_sse2;
112 c->perm_type = FF_IDCT_PERM_TRANSPOSE;
115 if (EXTERNAL_AVX(cpu_flags)) {
116 c->idct_put = ff_simple_idct10_put_avx;
118 c->idct = ff_simple_idct10_avx;
119 c->perm_type = FF_IDCT_PERM_TRANSPOSE;
123 if (avctx->bits_per_raw_sample == 12 &&
124 (avctx->idct_algo == FF_IDCT_AUTO ||
125 avctx->idct_algo == FF_IDCT_SIMPLEMMX)) {
126 if (EXTERNAL_SSE2(cpu_flags)) {
127 c->idct_put = ff_simple_idct12_put_sse2;
129 c->idct = ff_simple_idct12_sse2;
130 c->perm_type = FF_IDCT_PERM_TRANSPOSE;
132 if (EXTERNAL_AVX(cpu_flags)) {
133 c->idct_put = ff_simple_idct12_put_avx;
135 c->idct = ff_simple_idct12_avx;
136 c->perm_type = FF_IDCT_PERM_TRANSPOSE;