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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * This file is part of FFmpeg. |
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| 3 | * |
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| 4 | * FFmpeg is free software; you can redistribute it and/or |
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| 5 | * modify it under the terms of the GNU Lesser General Public |
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| 6 | * License as published by the Free Software Foundation; either |
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| 7 | * version 2.1 of the License, or (at your option) any later version. |
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| 8 | * |
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| 9 | * FFmpeg is distributed in the hope that it will be useful, |
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| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | * Lesser General Public License for more details. |
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| 13 | * |
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| 14 | * You should have received a copy of the GNU Lesser General Public |
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| 15 | * License along with FFmpeg; if not, write to the Free Software |
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| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 17 | */ |
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| 18 | |||
| 19 | #include "libavutil/attributes.h" |
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| 20 | #include "libavutil/mem.h" |
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| 21 | #include "avfft.h" |
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| 22 | #include "fft.h" |
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| 23 | #include "rdft.h" |
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| 24 | #include "dct.h" |
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| 25 | |||
| 26 | /* FFT */ |
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| 27 | |||
| 28 | FFTContext *av_fft_init(int nbits, int inverse) |
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| 29 | { |
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| 30 | FFTContext *s = av_mallocz(sizeof(*s)); |
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| 31 | |||
| 32 | if (s && ff_fft_init(s, nbits, inverse)) |
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| 33 | av_freep(&s); |
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| 34 | |||
| 35 | return s; |
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| 36 | } |
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| 37 | |||
| 38 | void av_fft_permute(FFTContext *s, FFTComplex *z) |
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| 39 | { |
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| 40 | s->fft_permute(s, z); |
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| 41 | } |
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| 42 | |||
| 43 | void av_fft_calc(FFTContext *s, FFTComplex *z) |
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| 44 | { |
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| 45 | s->fft_calc(s, z); |
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| 46 | } |
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| 47 | |||
| 48 | av_cold void av_fft_end(FFTContext *s) |
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| 49 | { |
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| 50 | if (s) { |
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| 51 | ff_fft_end(s); |
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| 52 | av_free(s); |
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| 53 | } |
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| 54 | } |
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| 55 | |||
| 56 | #if CONFIG_MDCT |
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| 57 | |||
| 58 | FFTContext *av_mdct_init(int nbits, int inverse, double scale) |
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| 59 | { |
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| 60 | FFTContext *s = av_malloc(sizeof(*s)); |
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| 61 | |||
| 62 | if (s && ff_mdct_init(s, nbits, inverse, scale)) |
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| 63 | av_freep(&s); |
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| 64 | |||
| 65 | return s; |
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| 66 | } |
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| 67 | |||
| 68 | void av_imdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input) |
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| 69 | { |
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| 70 | s->imdct_calc(s, output, input); |
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| 71 | } |
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| 72 | |||
| 73 | void av_imdct_half(FFTContext *s, FFTSample *output, const FFTSample *input) |
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| 74 | { |
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| 75 | s->imdct_half(s, output, input); |
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| 76 | } |
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| 77 | |||
| 78 | void av_mdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input) |
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| 79 | { |
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| 80 | s->mdct_calc(s, output, input); |
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| 81 | } |
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| 82 | |||
| 83 | av_cold void av_mdct_end(FFTContext *s) |
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| 84 | { |
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| 85 | if (s) { |
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| 86 | ff_mdct_end(s); |
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| 87 | av_free(s); |
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| 88 | } |
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| 89 | } |
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| 90 | |||
| 91 | #endif /* CONFIG_MDCT */ |
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| 92 | |||
| 93 | #if CONFIG_RDFT |
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| 94 | |||
| 95 | RDFTContext *av_rdft_init(int nbits, enum RDFTransformType trans) |
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| 96 | { |
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| 97 | RDFTContext *s = av_malloc(sizeof(*s)); |
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| 98 | |||
| 99 | if (s && ff_rdft_init(s, nbits, trans)) |
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| 100 | av_freep(&s); |
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| 101 | |||
| 102 | return s; |
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| 103 | } |
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| 104 | |||
| 105 | void av_rdft_calc(RDFTContext *s, FFTSample *data) |
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| 106 | { |
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| 107 | s->rdft_calc(s, data); |
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| 108 | } |
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| 109 | |||
| 110 | av_cold void av_rdft_end(RDFTContext *s) |
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| 111 | { |
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| 112 | if (s) { |
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| 113 | ff_rdft_end(s); |
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| 114 | av_free(s); |
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| 115 | } |
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| 116 | } |
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| 117 | |||
| 118 | #endif /* CONFIG_RDFT */ |
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| 119 | |||
| 120 | #if CONFIG_DCT |
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| 121 | |||
| 122 | DCTContext *av_dct_init(int nbits, enum DCTTransformType inverse) |
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| 123 | { |
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| 124 | DCTContext *s = av_malloc(sizeof(*s)); |
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| 125 | |||
| 126 | if (s && ff_dct_init(s, nbits, inverse)) |
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| 127 | av_freep(&s); |
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| 128 | |||
| 129 | return s; |
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| 130 | } |
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| 131 | |||
| 132 | void av_dct_calc(DCTContext *s, FFTSample *data) |
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| 133 | { |
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| 134 | s->dct_calc(s, data); |
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| 135 | } |
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| 136 | |||
| 137 | av_cold void av_dct_end(DCTContext *s) |
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| 138 | { |
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| 139 | if (s) { |
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| 140 | ff_dct_end(s); |
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| 141 | av_free(s); |
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| 142 | } |
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| 143 | } |
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| 144 | |||
| 145 | #endif /* CONFIG_DCT */ |