Directory: | ../../../ffmpeg/ |
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File: | src/libavcodec/avfft.c |
Date: | 2022-07-04 00:18:54 |
Exec | Total | Coverage | |
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Lines: | 54 | 60 | 90.0% |
Branches: | 14 | 24 | 58.3% |
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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 "libavutil/attributes.h" | ||
20 | #include "libavutil/mem.h" | ||
21 | #include "avfft.h" | ||
22 | #include "fft.h" | ||
23 | #include "rdft.h" | ||
24 | #include "dct.h" | ||
25 | |||
26 | /* FFT */ | ||
27 | |||
28 | 20 | FFTContext *av_fft_init(int nbits, int inverse) | |
29 | { | ||
30 | 20 | FFTContext *s = av_mallocz(sizeof(*s)); | |
31 | |||
32 |
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20 | if (s && ff_fft_init(s, nbits, inverse)) |
33 | ✗ | av_freep(&s); | |
34 | |||
35 | 20 | return s; | |
36 | } | ||
37 | |||
38 | 1064 | void av_fft_permute(FFTContext *s, FFTComplex *z) | |
39 | { | ||
40 | 1064 | s->fft_permute(s, z); | |
41 | 1064 | } | |
42 | |||
43 | 1064 | void av_fft_calc(FFTContext *s, FFTComplex *z) | |
44 | { | ||
45 | 1064 | s->fft_calc(s, z); | |
46 | 1064 | } | |
47 | |||
48 | 28 | av_cold void av_fft_end(FFTContext *s) | |
49 | { | ||
50 |
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28 | if (s) { |
51 | 20 | ff_fft_end(s); | |
52 | 20 | av_free(s); | |
53 | } | ||
54 | 28 | } | |
55 | |||
56 | #if CONFIG_MDCT | ||
57 | |||
58 | 18 | FFTContext *av_mdct_init(int nbits, int inverse, double scale) | |
59 | { | ||
60 | 18 | FFTContext *s = av_malloc(sizeof(*s)); | |
61 | |||
62 |
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18 | if (s && ff_mdct_init(s, nbits, inverse, scale)) |
63 | ✗ | av_freep(&s); | |
64 | |||
65 | 18 | return s; | |
66 | } | ||
67 | |||
68 | 9 | void av_imdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input) | |
69 | { | ||
70 | 9 | s->imdct_calc(s, output, input); | |
71 | 9 | } | |
72 | |||
73 | ✗ | void av_imdct_half(FFTContext *s, FFTSample *output, const FFTSample *input) | |
74 | { | ||
75 | ✗ | s->imdct_half(s, output, input); | |
76 | } | ||
77 | |||
78 | 9 | void av_mdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input) | |
79 | { | ||
80 | 9 | s->mdct_calc(s, output, input); | |
81 | 9 | } | |
82 | |||
83 | 18 | av_cold void av_mdct_end(FFTContext *s) | |
84 | { | ||
85 |
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18 | if (s) { |
86 | 18 | ff_mdct_end(s); | |
87 | 18 | av_free(s); | |
88 | } | ||
89 | 18 | } | |
90 | |||
91 | #endif /* CONFIG_MDCT */ | ||
92 | |||
93 | #if CONFIG_RDFT | ||
94 | |||
95 | 33 | RDFTContext *av_rdft_init(int nbits, enum RDFTransformType trans) | |
96 | { | ||
97 | 33 | RDFTContext *s = av_malloc(sizeof(*s)); | |
98 | |||
99 |
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33 | if (s && ff_rdft_init(s, nbits, trans)) |
100 | ✗ | av_freep(&s); | |
101 | |||
102 | 33 | return s; | |
103 | } | ||
104 | |||
105 | 1552 | void av_rdft_calc(RDFTContext *s, FFTSample *data) | |
106 | { | ||
107 | 1552 | s->rdft_calc(s, data); | |
108 | 1552 | } | |
109 | |||
110 | 78 | av_cold void av_rdft_end(RDFTContext *s) | |
111 | { | ||
112 |
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78 | if (s) { |
113 | 33 | ff_rdft_end(s); | |
114 | 33 | av_free(s); | |
115 | } | ||
116 | 78 | } | |
117 | |||
118 | #endif /* CONFIG_RDFT */ | ||
119 | |||
120 | #if CONFIG_DCT | ||
121 | |||
122 | 18 | DCTContext *av_dct_init(int nbits, enum DCTTransformType inverse) | |
123 | { | ||
124 | 18 | DCTContext *s = av_malloc(sizeof(*s)); | |
125 | |||
126 |
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18 | if (s && ff_dct_init(s, nbits, inverse)) |
127 | ✗ | av_freep(&s); | |
128 | |||
129 | 18 | return s; | |
130 | } | ||
131 | |||
132 | 18 | void av_dct_calc(DCTContext *s, FFTSample *data) | |
133 | { | ||
134 | 18 | s->dct_calc(s, data); | |
135 | 18 | } | |
136 | |||
137 | 18 | av_cold void av_dct_end(DCTContext *s) | |
138 | { | ||
139 |
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18 | if (s) { |
140 | 18 | ff_dct_end(s); | |
141 | 18 | av_free(s); | |
142 | } | ||
143 | 18 | } | |
144 | |||
145 | #endif /* CONFIG_DCT */ | ||
146 |