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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 "vorbisdsp.h" | ||
22 | |||
23 | 5390 | static void vorbis_inverse_coupling_c(float *mag, float *ang, ptrdiff_t blocksize) | |
24 | { | ||
25 |
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4059150 | for (ptrdiff_t i = 0; i < blocksize; i++) { |
26 | 4053760 | float angi = ang[i], magi = mag[i]; | |
27 | |||
28 |
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4053760 | if (magi > 0.f) { |
29 |
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626985 | if (angi > 0.f) { |
30 | 157422 | ang[i] = magi - angi; | |
31 | } else { | ||
32 | 469563 | ang[i] = magi; | |
33 | 469563 | mag[i] = magi + angi; | |
34 | } | ||
35 | } else { | ||
36 |
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3426775 | if (angi > 0.f) { |
37 | 161304 | ang[i] = magi + angi; | |
38 | } else { | ||
39 | 3265471 | ang[i] = magi; | |
40 | 3265471 | mag[i] = magi - angi; | |
41 | } | ||
42 | } | ||
43 | } | ||
44 | 5390 | } | |
45 | |||
46 | 79 | av_cold void ff_vorbisdsp_init(VorbisDSPContext *dsp) | |
47 | { | ||
48 | 79 | dsp->vorbis_inverse_coupling = vorbis_inverse_coupling_c; | |
49 | |||
50 | #if ARCH_AARCH64 | ||
51 | ff_vorbisdsp_init_aarch64(dsp); | ||
52 | #elif ARCH_ARM | ||
53 | ff_vorbisdsp_init_arm(dsp); | ||
54 | #elif ARCH_PPC | ||
55 | ff_vorbisdsp_init_ppc(dsp); | ||
56 | #elif ARCH_RISCV | ||
57 | ff_vorbisdsp_init_riscv(dsp); | ||
58 | #elif ARCH_X86 | ||
59 | 79 | ff_vorbisdsp_init_x86(dsp); | |
60 | #endif | ||
61 | 79 | } | |
62 |