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| 1 /* Copyright (c) 2007-2008 CSIRO | 1 /* Copyright (c) 2007-2008 CSIRO |
| 2 Copyright (c) 2007-2009 Xiph.Org Foundation | 2 Copyright (c) 2007-2009 Xiph.Org Foundation |
| 3 Copyright (c) 2008-2009 Gregory Maxwell | 3 Copyright (c) 2008-2009 Gregory Maxwell |
| 4 Written by Jean-Marc Valin and Gregory Maxwell */ | 4 Written by Jean-Marc Valin and Gregory Maxwell */ |
| 5 /* | 5 /* |
| 6 Redistribution and use in source and binary forms, with or without | 6 Redistribution and use in source and binary forms, with or without |
| 7 modification, are permitted provided that the following conditions | 7 modification, are permitted provided that the following conditions |
| 8 are met: | 8 are met: |
| 9 | 9 |
| 10 - Redistributions of source code must retain the above copyright | 10 - Redistributions of source code must retain the above copyright |
| (...skipping 21 matching lines...) Expand all Loading... |
| 32 | 32 |
| 33 #include "arch.h" | 33 #include "arch.h" |
| 34 #include "modes.h" | 34 #include "modes.h" |
| 35 #include "entenc.h" | 35 #include "entenc.h" |
| 36 #include "entdec.h" | 36 #include "entdec.h" |
| 37 #include "rate.h" | 37 #include "rate.h" |
| 38 | 38 |
| 39 /** Compute the amplitude (sqrt energy) in each of the bands | 39 /** Compute the amplitude (sqrt energy) in each of the bands |
| 40 * @param m Mode data | 40 * @param m Mode data |
| 41 * @param X Spectrum | 41 * @param X Spectrum |
| 42 * @param bands Square root of the energy for each band (returned) | 42 * @param bandE Square root of the energy for each band (returned) |
| 43 */ | 43 */ |
| 44 void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *band
E, int end, int C, int M); | 44 void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *band
E, int end, int C, int M); |
| 45 | 45 |
| 46 /*void compute_noise_energies(const CELTMode *m, const celt_sig *X, const opus_v
al16 *tonality, celt_ener *bandE);*/ | 46 /*void compute_noise_energies(const CELTMode *m, const celt_sig *X, const opus_v
al16 *tonality, celt_ener *bandE);*/ |
| 47 | 47 |
| 48 /** Normalise each band of X such that the energy in each band is | 48 /** Normalise each band of X such that the energy in each band is |
| 49 equal to 1 | 49 equal to 1 |
| 50 * @param m Mode data | 50 * @param m Mode data |
| 51 * @param X Spectrum (returned normalised) | 51 * @param X Spectrum (returned normalised) |
| 52 * @param bands Square root of the energy for each band | 52 * @param bandE Square root of the energy for each band |
| 53 */ | 53 */ |
| 54 void normalise_bands(const CELTMode *m, const celt_sig * OPUS_RESTRICT freq, cel
t_norm * OPUS_RESTRICT X, const celt_ener *bandE, int end, int C, int M); | 54 void normalise_bands(const CELTMode *m, const celt_sig * OPUS_RESTRICT freq, cel
t_norm * OPUS_RESTRICT X, const celt_ener *bandE, int end, int C, int M); |
| 55 | 55 |
| 56 /** Denormalise each band of X to restore full amplitude | 56 /** Denormalise each band of X to restore full amplitude |
| 57 * @param m Mode data | 57 * @param m Mode data |
| 58 * @param X Spectrum (returned de-normalised) | 58 * @param X Spectrum (returned de-normalised) |
| 59 * @param bands Square root of the energy for each band | 59 * @param bandE Square root of the energy for each band |
| 60 */ | 60 */ |
| 61 void denormalise_bands(const CELTMode *m, const celt_norm * OPUS_RESTRICT X, cel
t_sig * OPUS_RESTRICT freq, const celt_ener *bandE, int end, int C, int M); | 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); |
| 62 | 63 |
| 63 #define SPREAD_NONE (0) | 64 #define SPREAD_NONE (0) |
| 64 #define SPREAD_LIGHT (1) | 65 #define SPREAD_LIGHT (1) |
| 65 #define SPREAD_NORMAL (2) | 66 #define SPREAD_NORMAL (2) |
| 66 #define SPREAD_AGGRESSIVE (3) | 67 #define SPREAD_AGGRESSIVE (3) |
| 67 | 68 |
| 68 int spreading_decision(const CELTMode *m, celt_norm *X, int *average, | 69 int spreading_decision(const CELTMode *m, celt_norm *X, int *average, |
| 69 int last_decision, int *hf_average, int *tapset_decision, int update_hf, | 70 int last_decision, int *hf_average, int *tapset_decision, int update_hf, |
| 70 int end, int C, int M); | 71 int end, int C, int M); |
| 71 | 72 |
| 72 #ifdef MEASURE_NORM_MSE | 73 #ifdef MEASURE_NORM_MSE |
| 73 void measure_norm_mse(const CELTMode *m, float *X, float *X0, float *bandE, floa
t *bandE0, int M, int N, int C); | 74 void measure_norm_mse(const CELTMode *m, float *X, float *X0, float *bandE, floa
t *bandE0, int M, int N, int C); |
| 74 #endif | 75 #endif |
| 75 | 76 |
| 76 void haar1(celt_norm *X, int N0, int stride); | 77 void haar1(celt_norm *X, int N0, int stride); |
| 77 | 78 |
| 78 /** Quantisation/encoding of the residual spectrum | 79 /** Quantisation/encoding of the residual spectrum |
| 80 * @param encode flag that indicates whether we're encoding (1) or decoding (0) |
| 79 * @param m Mode data | 81 * @param m Mode data |
| 82 * @param start First band to process |
| 83 * @param end Last band to process + 1 |
| 80 * @param X Residual (normalised) | 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 |
| 81 * @param total_bits Total number of bits that can be used for the frame (includ
ing the ones already spent) | 94 * @param total_bits Total number of bits that can be used for the frame (includ
ing the ones already spent) |
| 82 * @param enc Entropy encoder | 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 |
| 83 */ | 100 */ |
| 84 void quant_all_bands(int encode, const CELTMode *m, int start, int end, | 101 void quant_all_bands(int encode, const CELTMode *m, int start, int end, |
| 85 celt_norm * X, celt_norm * Y, unsigned char *collapse_masks, const celt_en
er *bandE, int *pulses, | 102 celt_norm * X, celt_norm * Y, unsigned char *collapse_masks, const celt_en
er *bandE, int *pulses, |
| 86 int time_domain, int fold, int dual_stereo, int intensity, int *tf_res, | 103 int shortBlocks, int spread, int dual_stereo, int intensity, int *tf_res, |
| 87 opus_int32 total_bits, opus_int32 balance, ec_ctx *ec, int M, int codedBan
ds, opus_uint32 *seed); | 104 opus_int32 total_bits, opus_int32 balance, ec_ctx *ec, int M, int codedBan
ds, opus_uint32 *seed); |
| 88 | 105 |
| 89 void anti_collapse(const CELTMode *m, celt_norm *X_, unsigned char *collapse_mas
ks, int LM, int C, int size, | 106 void anti_collapse(const CELTMode *m, celt_norm *X_, unsigned char *collapse_mas
ks, int LM, int C, int size, |
| 90 int start, int end, opus_val16 *logE, opus_val16 *prev1logE, | 107 int start, int end, opus_val16 *logE, opus_val16 *prev1logE, |
| 91 opus_val16 *prev2logE, int *pulses, opus_uint32 seed); | 108 opus_val16 *prev2logE, int *pulses, opus_uint32 seed); |
| 92 | 109 |
| 93 opus_uint32 celt_lcg_rand(opus_uint32 seed); | 110 opus_uint32 celt_lcg_rand(opus_uint32 seed); |
| 94 | 111 |
| 112 int hysteresis_decision(opus_val16 val, const opus_val16 *thresholds, const opus
_val16 *hysteresis, int N, int prev); |
| 113 |
| 95 #endif /* BANDS_H */ | 114 #endif /* BANDS_H */ |
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