The Tor Browser / file comparison
comparison: media/libopus/celt/bands.h
media/libopus/celt/bands.h
- changeset 0
- 6474c204b198
equal
deleted
inserted
replaced
| -1:000000000000 | 0:f3c9f6ec1498 |
|---|---|
| 1 /* Copyright (c) 2007-2008 CSIRO | |
| 2 Copyright (c) 2007-2009 Xiph.Org Foundation | |
| 3 Copyright (c) 2008-2009 Gregory Maxwell | |
| 4 Written by Jean-Marc Valin and Gregory Maxwell */ | |
| 5 /* | |
| 6 Redistribution and use in source and binary forms, with or without | |
| 7 modification, are permitted provided that the following conditions | |
| 8 are met: | |
| 9 | |
| 10 - Redistributions of source code must retain the above copyright | |
| 11 notice, this list of conditions and the following disclaimer. | |
| 12 | |
| 13 - Redistributions in binary form must reproduce the above copyright | |
| 14 notice, this list of conditions and the following disclaimer in the | |
| 15 documentation and/or other materials provided with the distribution. | |
| 16 | |
| 17 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 18 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 19 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 20 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER | |
| 21 OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 22 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 23 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 24 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 25 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 26 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 27 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 28 */ | |
| 29 | |
| 30 #ifndef BANDS_H | |
| 31 #define BANDS_H | |
| 32 | |
| 33 #include "arch.h" | |
| 34 #include "modes.h" | |
| 35 #include "entenc.h" | |
| 36 #include "entdec.h" | |
| 37 #include "rate.h" | |
| 38 | |
| 39 /** Compute the amplitude (sqrt energy) in each of the bands | |
| 40 * @param m Mode data | |
| 41 * @param X Spectrum | |
| 42 * @param bandE Square root of the energy for each band (returned) | |
| 43 */ | |
| 44 void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bandE, int end, int C, int M); | |
| 45 | |
| 46 /*void compute_noise_energies(const CELTMode *m, const celt_sig *X, const opus_val16 *tonality, celt_ener *bandE);*/ | |
| 47 | |
| 48 /** Normalise each band of X such that the energy in each band is | |
| 49 equal to 1 | |
| 50 * @param m Mode data | |
| 51 * @param X Spectrum (returned normalised) | |
| 52 * @param bandE Square root of the energy for each band | |
| 53 */ | |
| 54 void normalise_bands(const CELTMode *m, const celt_sig * OPUS_RESTRICT freq, celt_norm * OPUS_RESTRICT X, const celt_ener *bandE, int end, int C, int M); | |
| 55 | |
| 56 /** Denormalise each band of X to restore full amplitude | |
| 57 * @param m Mode data | |
| 58 * @param X Spectrum (returned de-normalised) | |
| 59 * @param bandE Square root of the energy for each band | |
| 60 */ | |
| 61 void denormalise_bands(const CELTMode *m, const celt_norm * OPUS_RESTRICT X, | |
| 62 celt_sig * OPUS_RESTRICT freq, const opus_val16 *bandE, int start, int end, int C, int M); | |
| 63 | |
| 64 #define SPREAD_NONE (0) | |
| 65 #define SPREAD_LIGHT (1) | |
| 66 #define SPREAD_NORMAL (2) | |
| 67 #define SPREAD_AGGRESSIVE (3) | |
| 68 | |
| 69 int spreading_decision(const CELTMode *m, celt_norm *X, int *average, | |
| 70 int last_decision, int *hf_average, int *tapset_decision, int update_hf, | |
| 71 int end, int C, int M); | |
| 72 | |
| 73 #ifdef MEASURE_NORM_MSE | |
| 74 void measure_norm_mse(const CELTMode *m, float *X, float *X0, float *bandE, float *bandE0, int M, int N, int C); | |
| 75 #endif | |
| 76 | |
| 77 void haar1(celt_norm *X, int N0, int stride); | |
| 78 | |
| 79 /** Quantisation/encoding of the residual spectrum | |
| 80 * @param encode flag that indicates whether we're encoding (1) or decoding (0) | |
| 81 * @param m Mode data | |
| 82 * @param start First band to process | |
| 83 * @param end Last band to process + 1 | |
| 84 * @param X Residual (normalised) | |
| 85 * @param Y Residual (normalised) for second channel (or NULL for mono) | |
| 86 * @param collapse_masks Anti-collapse tracking mask | |
| 87 * @param bandE Square root of the energy for each band | |
| 88 * @param pulses Bit allocation (per band) for PVQ | |
| 89 * @param shortBlocks Zero for long blocks, non-zero for short blocks | |
| 90 * @param spread Amount of spreading to use | |
| 91 * @param dual_stereo Zero for MS stereo, non-zero for dual stereo | |
| 92 * @param intensity First band to use intensity stereo | |
| 93 * @param tf_res Time-frequency resolution change | |
| 94 * @param total_bits Total number of bits that can be used for the frame (including the ones already spent) | |
| 95 * @param balance Number of unallocated bits | |
| 96 * @param en Entropy coder state | |
| 97 * @param LM log2() of the number of 2.5 subframes in the frame | |
| 98 * @param codedBands Last band to receive bits + 1 | |
| 99 * @param seed Random generator seed | |
| 100 */ | |
| 101 void quant_all_bands(int encode, const CELTMode *m, int start, int end, | |
| 102 celt_norm * X, celt_norm * Y, unsigned char *collapse_masks, const celt_ener *bandE, int *pulses, | |
| 103 int shortBlocks, int spread, int dual_stereo, int intensity, int *tf_res, | |
| 104 opus_int32 total_bits, opus_int32 balance, ec_ctx *ec, int M, int codedBands, opus_uint32 *seed); | |
| 105 | |
| 106 void anti_collapse(const CELTMode *m, celt_norm *X_, unsigned char *collapse_masks, int LM, int C, int size, | |
| 107 int start, int end, opus_val16 *logE, opus_val16 *prev1logE, | |
| 108 opus_val16 *prev2logE, int *pulses, opus_uint32 seed); | |
| 109 | |
| 110 opus_uint32 celt_lcg_rand(opus_uint32 seed); | |
| 111 | |
| 112 int hysteresis_decision(opus_val16 val, const opus_val16 *thresholds, const opus_val16 *hysteresis, int N, int prev); | |
| 113 | |
| 114 #endif /* BANDS_H */ |
