FFmpeg  4.0
Macros | Variables
g729data.h File Reference
#include <stdint.h>

Go to the source code of this file.

Macros

#define MA_NP   4
 Moving Average (MA) prediction order. More...
 
#define VQ_1ST_BITS   7
 first stage vector of quantizer (size in bits) More...
 
#define VQ_2ND_BITS   5
 second stage vector of quantizer (size in bits) More...
 
#define GC_1ST_IDX_BITS_8K   3
 gain codebook (first stage) index, 8k mode (size in bits) More...
 
#define GC_2ND_IDX_BITS_8K   4
 gain codebook (second stage) index, 8k mode (size in bits) More...
 
#define GC_1ST_IDX_BITS_6K4   3
 gain codebook (first stage) index, 6.4k mode (size in bits) More...
 
#define GC_2ND_IDX_BITS_6K4   3
 gain codebook (second stage) index, 6.4k mode (size in bits) More...
 

Variables

static const int16_t cb_lsp_1st [1<< VQ_1ST_BITS][10]
 first stage LSP codebook (10-dimensional, with 128 entries (3.24 of G.729) More...
 
static const int16_t cb_lsp_2nd [1<< VQ_2ND_BITS][10]
 second stage LSP codebook, high and low parts (both 5-dimensional, with 32 entries (3.2.4 of G.729) More...
 
static const int16_t cb_gain_1st_8k [1<< GC_1ST_IDX_BITS_8K][2]
 gain codebook (first stage), 8k mode (3.9.2 of G.729) More...
 
static const int16_t cb_gain_2nd_8k [1<< GC_2ND_IDX_BITS_8K][2]
 gain codebook (second stage), 8k mode (3.9.2 of G.729) More...
 
static const int16_t cb_gain_1st_6k4 [1<< GC_1ST_IDX_BITS_6K4][2]
 gain codebook (first stage), 6.4k mode (D.3.9.2 of G.729) More...
 
static const int16_t cb_gain_2nd_6k4 [1<< GC_2ND_IDX_BITS_6K4][2]
 gain codebook (second stage), 6.4k mode (D.3.9.2 of G.729) More...
 
static const int16_t cb_ma_predictor [2][MA_NP][10]
 4th order Moving Average (MA) Predictor codebook (3.2.4 of G.729) More...
 
static const int16_t cb_ma_predictor_sum [2][10]
 
                                15         3

cb_ma_predictor_sum[j][i] = floor( 2 * (1.0 - sum ( cb_ma_predictor_float[j][k][i] ) ) ) k=0 j=0..1, i=0..9 More...

 
static const int16_t cb_ma_predictor_sum_inv [2][10]
 
                                                      12
                                                     2

cb_ma_predictor_sum_inv[j][i] = floor(------------------------------------------—) 3 1.0 - sum ( cb_ma_predictor_float[j][k][i] ) k=0 j=0..1, i=0..9 More...

 
static const uint16_t ma_prediction_coeff [4]
 MA prediction coefficients (3.9.1 of G.729, near Equation 69) More...
 
static const int16_t lsp_init [10]
 initial LSP coefficients belongs to virtual frame preceding the first frame of the stream More...
 
static const int16_t phase_filter [3][40]
 additional "phase" post-processing filter impulse response (D.6.2 of G.729) More...
 

Macro Definition Documentation

◆ MA_NP

#define MA_NP   4

Moving Average (MA) prediction order.

Definition at line 27 of file g729data.h.

Referenced by decode_frame(), decoder_init(), lsf_decode(), and lsf_restore_from_previous().

◆ VQ_1ST_BITS

#define VQ_1ST_BITS   7

first stage vector of quantizer (size in bits)

Definition at line 29 of file g729data.h.

Referenced by decode_frame().

◆ VQ_2ND_BITS

#define VQ_2ND_BITS   5

second stage vector of quantizer (size in bits)

Definition at line 30 of file g729data.h.

Referenced by decode_frame().

◆ GC_1ST_IDX_BITS_8K

#define GC_1ST_IDX_BITS_8K   3

gain codebook (first stage) index, 8k mode (size in bits)

Definition at line 32 of file g729data.h.

◆ GC_2ND_IDX_BITS_8K

#define GC_2ND_IDX_BITS_8K   4

gain codebook (second stage) index, 8k mode (size in bits)

Definition at line 33 of file g729data.h.

◆ GC_1ST_IDX_BITS_6K4

#define GC_1ST_IDX_BITS_6K4   3

gain codebook (first stage) index, 6.4k mode (size in bits)

Definition at line 35 of file g729data.h.

◆ GC_2ND_IDX_BITS_6K4

#define GC_2ND_IDX_BITS_6K4   3

gain codebook (second stage) index, 6.4k mode (size in bits)

Definition at line 36 of file g729data.h.

Variable Documentation

◆ cb_lsp_1st

const int16_t cb_lsp_1st[1<< VQ_1ST_BITS][10]
static

first stage LSP codebook (10-dimensional, with 128 entries (3.24 of G.729)

Definition at line 42 of file g729data.h.

Referenced by lsf_decode().

◆ cb_lsp_2nd

const int16_t cb_lsp_2nd[1<< VQ_2ND_BITS][10]
static

second stage LSP codebook, high and low parts (both 5-dimensional, with 32 entries (3.2.4 of G.729)

Definition at line 177 of file g729data.h.

Referenced by lsf_decode().

◆ cb_gain_1st_8k

const int16_t cb_gain_1st_8k[1<< GC_1ST_IDX_BITS_8K][2]
static
Initial value:
= {
{ 3242 , 9949 },
{ 1551 , 2425 },
{ 2678 , 27162 },
{ 1921 , 9291 },
{ 1831 , 5022 },
{ 1 , 1516 },
{ 356 , 14756 },
{ 57 , 5404 },
}

gain codebook (first stage), 8k mode (3.9.2 of G.729)

Definition at line 215 of file g729data.h.

Referenced by decode_frame().

◆ cb_gain_2nd_8k

const int16_t cb_gain_2nd_8k[1<< GC_2ND_IDX_BITS_8K][2]
static
Initial value:
= {
{ 5142 , 592 },
{ 17299 , 1861 },
{ 6160 , 2395 },
{ 16112 , 3392 },
{ 826 , 2005 },
{ 18973 , 5935 },
{ 1994 , 0 },
{ 15434 , 237 },
{ 10573 , 2966 },
{ 15132 , 4914 },
{ 11569 , 1196 },
{ 14194 , 1630 },
{ 8091 , 4861 },
{ 15161 , 14276 },
{ 9120 , 525 },
{ 13260 , 3256 },
}

gain codebook (second stage), 8k mode (3.9.2 of G.729)

Definition at line 229 of file g729data.h.

Referenced by decode_frame().

◆ cb_gain_1st_6k4

const int16_t cb_gain_1st_6k4[1<< GC_1ST_IDX_BITS_6K4][2]
static
Initial value:
=
{
{ 5849, 0 },
{ 3171, 9280 },
{ 3617, 6747 },
{ 4987, 22294 },
{ 2929, 1078 },
{ 6068, 6093 },
{ 9425, 2731 },
{ 3915, 12872 },
}

gain codebook (first stage), 6.4k mode (D.3.9.2 of G.729)

Definition at line 251 of file g729data.h.

Referenced by decode_frame().

◆ cb_gain_2nd_6k4

const int16_t cb_gain_2nd_6k4[1<< GC_2ND_IDX_BITS_6K4][2]
static
Initial value:
=
{
{ 0, 4175 },
{10828, 27602 },
{16423, 15724 },
{ 4478, 7324 },
{ 3988, 0 },
{10291, 11385 },
{11956, 10735 },
{ 7876, 7821 },
}

gain codebook (second stage), 6.4k mode (D.3.9.2 of G.729)

Definition at line 266 of file g729data.h.

Referenced by decode_frame().

◆ cb_ma_predictor

const int16_t cb_ma_predictor[2][MA_NP][10]
static
Initial value:
= {
{
{ 8421, 9109, 9175, 8965, 9034, 9057, 8765, 8775, 9106, 8673},
{ 7018, 7189, 7638, 7307, 7444, 7379, 7038, 6956, 6930, 6868},
{ 5472, 4990, 5134, 5177, 5246, 5141, 5206, 5095, 4830, 5147},
{ 4056, 3031, 2614, 3024, 2916, 2713, 3309, 3237, 2857, 3473}
},
{
{ 7733, 7880, 8188, 8175, 8247, 8490, 8637, 8601, 8359, 7569},
{ 4210, 3031, 2552, 3473, 3876, 3853, 4184, 4154, 3909, 3968},
{ 3214, 1930, 1313, 2143, 2493, 2385, 2755, 2706, 2542, 2919},
{ 3024, 1592, 940, 1631, 1723, 1579, 2034, 2084, 1913, 2601}
}
}

4th order Moving Average (MA) Predictor codebook (3.2.4 of G.729)

float cb_ma_predictor_float[2][MA_NP][10] = { { {0.2570, 0.2780, 0.2800, 0.2736, 0.2757, 0.2764, 0.2675, 0.2678, 0.2779, 0.2647}, {0.2142, 0.2194, 0.2331, 0.2230, 0.2272, 0.2252, 0.2148, 0.2123, 0.2115, 0.2096}, {0.1670, 0.1523, 0.1567, 0.1580, 0.1601, 0.1569, 0.1589, 0.1555, 0.1474, 0.1571}, {0.1238, 0.0925, 0.0798, 0.0923, 0.0890, 0.0828, 0.1010, 0.0988, 0.0872, 0.1060}, }, { {0.2360, 0.2405, 0.2499, 0.2495, 0.2517, 0.2591, 0.2636, 0.2625, 0.2551, 0.2310}, {0.1285, 0.0925, 0.0779, 0.1060, 0.1183, 0.1176, 0.1277, 0.1268, 0.1193, 0.1211}, {0.0981, 0.0589, 0.0401, 0.0654, 0.0761, 0.0728, 0.0841, 0.0826, 0.0776, 0.0891}, {0.0923, 0.0486, 0.0287, 0.0498, 0.0526, 0.0482, 0.0621, 0.0636, 0.0584, 0.0794}, }, }; 15 cb_ma_predictor[j][k][i] = floor( 2 * cb_ma_predictor_float[j][k][i] )

j=0..1, i=0..9, k=0..MA_NP-1

Definition at line 300 of file g729data.h.

Referenced by lsf_decode(), and lsf_restore_from_previous().

◆ cb_ma_predictor_sum

const int16_t cb_ma_predictor_sum[2][10]
static
Initial value:
= {
{ 7798, 8447, 8205, 8293, 8126, 8477, 8447, 8703, 9043, 8604},
{14585, 18333, 19772, 17344, 16426, 16459, 15155, 15220, 16043, 15708}
}

                                15         3

cb_ma_predictor_sum[j][i] = floor( 2 * (1.0 - sum ( cb_ma_predictor_float[j][k][i] ) ) ) k=0 j=0..1, i=0..9

Definition at line 321 of file g729data.h.

Referenced by lsf_decode().

◆ cb_ma_predictor_sum_inv

const int16_t cb_ma_predictor_sum_inv[2][10]
static
Initial value:
= {
{17210, 15888, 16357, 16183, 16516, 15833, 15888, 15421, 14840, 15597},
{ 9202, 7320, 6788, 7738, 8170, 8154, 8856, 8818, 8366, 8544}
}

                                                      12
                                                     2

cb_ma_predictor_sum_inv[j][i] = floor(------------------------------------------—) 3 1.0 - sum ( cb_ma_predictor_float[j][k][i] ) k=0 j=0..1, i=0..9

Definition at line 335 of file g729data.h.

Referenced by lsf_restore_from_previous().

◆ ma_prediction_coeff

const uint16_t ma_prediction_coeff[4]
static
Initial value:
= {
5571, 4751, 2785, 1556
}

MA prediction coefficients (3.9.1 of G.729, near Equation 69)

Definition at line 343 of file g729data.h.

Referenced by decode_frame().

◆ lsp_init

const int16_t lsp_init[10]
static
Initial value:
= {
30000, 26000, 21000, 15000, 8000, 0, -8000,-15000,-21000,-26000
}

initial LSP coefficients belongs to virtual frame preceding the first frame of the stream

Definition at line 351 of file g729data.h.

Referenced by decoder_init().

◆ phase_filter

const int16_t phase_filter[3][40]
static
Initial value:
=
{
{
14690, 11518, 1268, -2762, -5672, 7514, -36, -2808, -3041, 4823,
2952, -8425, 3785, 1455, 2179, -8638, 8051, -2104, -1455, 777,
1108, -2386, 2254, -364, -675, -2104, 6046, -5682, 1072, 3123,
-5059, 5312, -2330, -3729, 6924, -3890, 675, -1776, 29, 10145,
},
{
30274, 3831, -4037, 2972, -1049, -1003, 2477, -3044, 2815, -2232,
1753, -1612, 1714, -1776, 1543, -1009, 429, -170, 472, -1265,
2176, -2707, 2523, -1622, 344, 826, -1530, 1724, -1658, 1701,
-2064, 2644, -3061, 2897, -1979, 557, 780, -1370, 842, 655,
},
{
32767, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
}
}

additional "phase" post-processing filter impulse response (D.6.2 of G.729)

Table contains three impulse responses, correspond to different amounts of spreading.

Definition at line 361 of file g729data.h.

Referenced by g729d_get_new_exc().

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