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@ -33,6 +33,8 @@ |
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#define SUBFRAMES 4 |
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#define SUBFRAMES 4 |
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#define SUBFRAME_LEN 60 |
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#define SUBFRAME_LEN 60 |
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#define FRAME_LEN (SUBFRAME_LEN << 2) |
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#define FRAME_LEN (SUBFRAME_LEN << 2) |
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#define HALF_FRAME_LEN (FRAME_LEN / 2) |
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#define LPC_FRAME (HALF_FRAME_LEN + SUBFRAME_LEN) |
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#define LPC_ORDER 10 |
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#define LPC_ORDER 10 |
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#define LSP_BANDS 3 |
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#define LSP_BANDS 3 |
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#define LSP_CB_SIZE 256 |
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#define LSP_CB_SIZE 256 |
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@ -92,6 +94,26 @@ typedef struct PPFParam { |
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int16_t sc_gain; ///< scaling gain
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int16_t sc_gain; ///< scaling gain
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} PPFParam; |
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} PPFParam; |
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/**
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* Harmonic filter parameters |
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*/ |
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typedef struct HFParam { |
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int index; |
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int gain; |
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} HFParam; |
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/**
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* Optimized fixed codebook excitation parameters |
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*/ |
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typedef struct FCBParam { |
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int min_err; |
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int amp_index; |
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int grid_index; |
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int dirac_train; |
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int pulse_pos[PULSE_MAX]; |
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int pulse_sign[PULSE_MAX]; |
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} FCBParam; |
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typedef struct g723_1_context { |
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typedef struct g723_1_context { |
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AVClass *class; |
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AVClass *class; |
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@ -122,6 +144,17 @@ typedef struct g723_1_context { |
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int postfilter; |
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int postfilter; |
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int16_t audio[FRAME_LEN + LPC_ORDER + PITCH_MAX + 4]; |
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int16_t audio[FRAME_LEN + LPC_ORDER + PITCH_MAX + 4]; |
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/* encoder */ |
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int16_t prev_data[HALF_FRAME_LEN]; |
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int16_t prev_weight_sig[PITCH_MAX]; |
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int16_t hpf_fir_mem; ///< highpass filter fir
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int hpf_iir_mem; ///< and iir memories
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int16_t perf_fir_mem[LPC_ORDER]; ///< perceptual filter fir
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int16_t perf_iir_mem[LPC_ORDER]; ///< and iir memories
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int16_t harmonic_mem[PITCH_MAX]; |
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} G723_1_Context; |
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} G723_1_Context; |
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@ -1329,6 +1362,55 @@ static const int16_t postfilter_tbl[2][LPC_ORDER] = { |
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{ 24576, 18432, 13824, 10368, 7776, 5832, 4374, 3281, 2460, 1845 } |
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{ 24576, 18432, 13824, 10368, 7776, 5832, 4374, 3281, 2460, 1845 } |
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}; |
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}; |
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/**
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* Hamming window coefficients scaled by 2^15 |
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*/ |
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static const int16_t hamming_window[LPC_FRAME] = { |
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2621, 2631, 2659, 2705, 2770, 2853, 2955, 3074, 3212, 3367, |
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3541, 3731, 3939, 4164, 4405, 4663, 4937, 5226, 5531, 5851, |
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6186, 6534, 6897, 7273, 7661, 8062, 8475, 8899, 9334, 9780, |
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10235, 10699, 11172, 11653, 12141, 12636, 13138, 13645, 14157, 14673, |
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15193, 15716, 16242, 16769, 17298, 17827, 18356, 18884, 19411, 19935, |
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20457, 20975, 21489, 21999, 22503, 23002, 23494, 23978, 24455, 24924, |
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25384, 25834, 26274, 26704, 27122, 27529, 27924, 28306, 28675, 29031, |
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29373, 29700, 30012, 30310, 30592, 30857, 31107, 31340, 31557, 31756, |
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31938, 32102, 32249, 32377, 32488, 32580, 32654, 32710, 32747, 32766, |
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32766, 32747, 32710, 32654, 32580, 32488, 32377, 32249, 32102, 31938, |
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31756, 31557, 31340, 31107, 30857, 30592, 30310, 30012, 29700, 29373, |
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29031, 28675, 28306, 27924, 27529, 27122, 26704, 26274, 25834, 25384, |
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24924, 24455, 23978, 23494, 23002, 22503, 21999, 21489, 20975, 20457, |
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19935, 19411, 18884, 18356, 17827, 17298, 16769, 16242, 15716, 15193, |
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14673, 14157, 13645, 13138, 12636, 12141, 11653, 11172, 10699, 10235, |
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9780, 9334, 8899, 8475, 8062, 7661, 7273, 6897, 6534, 6186, |
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5851, 5531, 5226, 4937, 4663, 4405, 4164, 3939, 3731, 3541, |
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3367, 3212, 3074, 2955, 2853, 2770, 2705, 2659, 2631, 2621 |
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}; |
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/**
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* Binomial window coefficients scaled by 2^15 |
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*/ |
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static const int16_t binomial_window[LPC_ORDER] = { |
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32749, 32695, 32604, 32477, 32315, 32118, 31887, 31622, 31324, 30995 |
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}; |
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/**
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* 0.994^i scaled by 2^15 |
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*/ |
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static const int16_t bandwidth_expand[LPC_ORDER] = { |
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32571, 32376, 32182, 31989, 31797, 31606, 31416, 31228, 31040, 30854 |
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}; |
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/**
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* 0.5^i scaled by 2^15 |
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*/ |
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static const int16_t percept_flt_tbl[2][LPC_ORDER] = { |
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/* Zero part */ |
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{29491, 26542, 23888, 21499, 19349, 17414, 15673, 14106, 12695, 11425}, |
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/* Pole part */ |
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{16384, 8192, 4096, 2048, 1024, 512, 256, 128, 64, 32} |
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}; |
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static const int cng_adaptive_cb_lag[4] = { 1, 0, 1, 3 }; |
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static const int cng_adaptive_cb_lag[4] = { 1, 0, 1, 3 }; |
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static const int cng_filt[4] = { 273, 998, 499, 333 }; |
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static const int cng_filt[4] = { 273, 998, 499, 333 }; |
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