libavcodec/g729data.h File Reference

#include <stdint.h>

Go to the source code of this file.

Defines
#define	MA_NP   4
	Moving Average (MA) prediction order.
#define	VQ_1ST_BITS   7
	first stage vector of quantizer (size in bits)
#define	VQ_2ND_BITS   5
	second stage vector of quantizer (size in bits)
#define	GC_1ST_IDX_BITS_8K   3
	gain codebook (first stage) index, 8k mode (size in bits)
#define	GC_2ND_IDX_BITS_8K   4
	gain codebook (second stage) index, 8k mode (size in bits)
#define	GC_1ST_IDX_BITS_6K4   3
	gain codebook (first stage) index, 6.4k mode (size in bits)
#define	GC_2ND_IDX_BITS_6K4   3
	gain codebook (second stage) index, 6.4k mode (size in bits)
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)
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)
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)
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)
static const int16_t	cb_ma_predictor [2][MA_NP][10]
	4th order Moving Average (MA) Predictor codebook (3.2.4 of G.729)
static const int16_t	cb_ma_predictor_sum [2][10]
static const int16_t	lsp_init [10]
	initial LSP coefficients belongs to virtual frame preceding the first frame of the stream

---

Define Documentation

#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.

#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.

#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.

#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.

#define MA_NP   4

Moving Average (MA) prediction order.

Definition at line 27 of file g729data.h.

Referenced by decoder_init(), and lsf_decode().

#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().

#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().

---

Variable Documentation

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().

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().

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().

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().

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)

Definition at line 251 of file g729data.h.

Referenced by lsf_decode().

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}
}

Definition at line 266 of file g729data.h.

Referenced by lsf_decode().

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 275 of file g729data.h.

Referenced by decoder_init().