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2ba45a60 DM |
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 | 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 | switch (perm_type) { | |
48 | case FF_IDCT_PERM_SIMPLE: | |
49 | for (i = 0; i < 64; i++) | |
50 | idct_permutation[i] = simple_mmx_permutation[i]; | |
51 | return 1; | |
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]; | |
55 | return 1; | |
56 | } | |
57 | ||
58 | return 0; | |
59 | } | |
60 | ||
61 | av_cold void ff_idctdsp_init_x86(IDCTDSPContext *c, AVCodecContext *avctx, | |
62 | unsigned high_bit_depth) | |
63 | { | |
64 | int cpu_flags = av_get_cpu_flags(); | |
65 | ||
66 | if (INLINE_MMX(cpu_flags)) { | |
67 | c->put_pixels_clamped = ff_put_pixels_clamped_mmx; | |
68 | c->add_pixels_clamped = ff_add_pixels_clamped_mmx; | |
69 | ||
70 | if (!high_bit_depth && | |
71 | avctx->lowres == 0 && | |
72 | (avctx->idct_algo == FF_IDCT_AUTO || | |
73 | avctx->idct_algo == FF_IDCT_SIMPLEAUTO || | |
74 | avctx->idct_algo == FF_IDCT_SIMPLEMMX)) { | |
75 | c->idct_put = ff_simple_idct_put_mmx; | |
76 | c->idct_add = ff_simple_idct_add_mmx; | |
77 | c->idct = ff_simple_idct_mmx; | |
78 | c->perm_type = FF_IDCT_PERM_SIMPLE; | |
79 | } | |
80 | } | |
81 | if (EXTERNAL_MMX(cpu_flags)) { | |
82 | c->put_signed_pixels_clamped = ff_put_signed_pixels_clamped_mmx; | |
83 | } | |
84 | if (EXTERNAL_SSE2(cpu_flags)) { | |
85 | c->put_signed_pixels_clamped = ff_put_signed_pixels_clamped_sse2; | |
86 | } | |
87 | } |