FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/x86/idctdsp_init.c
Date: 2026-01-16 07:34:38
Exec Total Coverage
Lines: 45 63 71.4%
Functions: 2 2 100.0%
Branches: 38 56 67.9%
Line Branch Exec Source
1 /*
2 * This file is part of FFmpeg.
3 *
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.
8 *
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.
13 *
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
17 */
18
19 #include "config.h"
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"
25 #include "idctdsp.h"
26 #include "simple_idct.h"
27
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,
38 };
39
40 static const uint8_t idct_sse2_row_perm[8] = { 0, 4, 1, 5, 2, 6, 3, 7 };
41
42 1734 av_cold int ff_init_scantable_permutation_x86(uint8_t *idct_permutation,
43 enum idct_permutation_type perm_type)
44 {
45 int i;
46
47
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 1734 switch (perm_type) {
48 #if ARCH_X86_32
49 case FF_IDCT_PERM_SIMPLE:
50 for (i = 0; i < 64; i++)
51 idct_permutation[i] = simple_mmx_permutation[i];
52 return 1;
53 #endif
54 2 case FF_IDCT_PERM_SSE2:
55
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 130 for (i = 0; i < 64; i++)
56 128 idct_permutation[i] = (i & 0x38) | idct_sse2_row_perm[i & 7];
57 2 return 1;
58 }
59
60 1732 return 0;
61 }
62
63 1579 av_cold void ff_idctdsp_init_x86(IDCTDSPContext *c, AVCodecContext *avctx,
64 unsigned high_bit_depth)
65 {
66 1579 int cpu_flags = av_get_cpu_flags();
67
68
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 1579 if (EXTERNAL_SSE2(cpu_flags)) {
69 255 c->put_signed_pixels_clamped = ff_put_signed_pixels_clamped_sse2;
70 255 c->put_pixels_clamped = ff_put_pixels_clamped_sse2;
71 255 c->add_pixels_clamped = ff_add_pixels_clamped_sse2;
72
73 #if ARCH_X86_32
74 if (!high_bit_depth &&
75 avctx->lowres == 0 &&
76 (avctx->idct_algo == FF_IDCT_AUTO ||
77 avctx->idct_algo == FF_IDCT_SIMPLEAUTO ||
78 avctx->idct_algo == FF_IDCT_SIMPLEMMX)) {
79 c->idct = ff_simple_idct_sse2;
80 c->idct_put = ff_simple_idct_put_sse2;
81 c->idct_add = ff_simple_idct_add_sse2;
82 c->perm_type = FF_IDCT_PERM_SIMPLE;
83 }
84 #endif
85
86 #if ARCH_X86_64
87
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 255 if (!high_bit_depth &&
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 255 avctx->lowres == 0 &&
89
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 255 (avctx->idct_algo == FF_IDCT_AUTO ||
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 3 avctx->idct_algo == FF_IDCT_SIMPLEAUTO ||
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 3 avctx->idct_algo == FF_IDCT_SIMPLE)) {
93 253 c->idct = ff_simple_idct8_sse2;
94 253 c->idct_put = ff_simple_idct8_put_sse2;
95 253 c->idct_add = ff_simple_idct8_add_sse2;
96 253 c->perm_type = FF_IDCT_PERM_TRANSPOSE;
97 }
98 #endif
99 }
100
101 #if ARCH_X86_64
102
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 1579 if (avctx->lowres == 0) {
103
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 1578 if (EXTERNAL_AVX(cpu_flags) &&
104 248 !high_bit_depth &&
105
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 248 (avctx->idct_algo == FF_IDCT_AUTO ||
106
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108
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 3 avctx->idct_algo == FF_IDCT_SIMPLE)) {
109 246 c->idct = ff_simple_idct8_avx;
110 246 c->idct_put = ff_simple_idct8_put_avx;
111 246 c->idct_add = ff_simple_idct8_add_avx;
112 246 c->perm_type = FF_IDCT_PERM_TRANSPOSE;
113 }
114
115
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 1578 if (avctx->bits_per_raw_sample == 10 &&
116
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 25 avctx->codec_id != AV_CODEC_ID_MPEG4 &&
117
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 23 (avctx->idct_algo == FF_IDCT_AUTO ||
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 23 avctx->idct_algo == FF_IDCT_SIMPLEAUTO ||
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 23 avctx->idct_algo == FF_IDCT_SIMPLE)) {
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 23 if (EXTERNAL_SSE2(cpu_flags)) {
121 ✗ c->idct_put = ff_simple_idct10_put_sse2;
122 ✗ c->idct_add = NULL;
123 ✗ c->idct = ff_simple_idct10_sse2;
124 ✗ c->perm_type = FF_IDCT_PERM_TRANSPOSE;
125
126 }
127
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 23 if (EXTERNAL_AVX(cpu_flags)) {
128 ✗ c->idct_put = ff_simple_idct10_put_avx;
129 ✗ c->idct_add = NULL;
130 ✗ c->idct = ff_simple_idct10_avx;
131 ✗ c->perm_type = FF_IDCT_PERM_TRANSPOSE;
132 }
133 }
134
135
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 1578 if (avctx->bits_per_raw_sample == 12 &&
136
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 4 avctx->idct_algo == FF_IDCT_SIMPLEMMX)) {
138 ✗ if (EXTERNAL_SSE2(cpu_flags)) {
139 ✗ c->idct_put = ff_simple_idct12_put_sse2;
140 ✗ c->idct_add = NULL;
141 ✗ c->idct = ff_simple_idct12_sse2;
142 ✗ c->perm_type = FF_IDCT_PERM_TRANSPOSE;
143 }
144 ✗ if (EXTERNAL_AVX(cpu_flags)) {
145 ✗ c->idct_put = ff_simple_idct12_put_avx;
146 ✗ c->idct_add = NULL;
147 ✗ c->idct = ff_simple_idct12_avx;
148 ✗ c->perm_type = FF_IDCT_PERM_TRANSPOSE;
149 }
150 }
151 }
152 #endif
153 1579 }
154