libavcodec/g723_1_data.h File Reference

G723.1 compatible decoder data tables. More...

#include <stdint.h>

Go to the source code of this file.

Data Structures

struct G723_1_Subframe

G723.1 unpacked data subframe. More...

struct PPFParam

Pitch postfilter parameters. More...

struct HFParam

Harmonic filter parameters. More...

struct FCBParam

Optimized fixed codebook excitation parameters. More...

Defines

#define SUBFRAMES   4

#define SUBFRAME_LEN   60

#define FRAME_LEN   (SUBFRAME_LEN << 2)

#define HALF_FRAME_LEN   (FRAME_LEN / 2)

#define LPC_FRAME   (HALF_FRAME_LEN + SUBFRAME_LEN)

#define LPC_ORDER   10

#define LSP_BANDS   3

#define LSP_CB_SIZE   256

#define PITCH_MIN   18

#define PITCH_MAX   (PITCH_MIN + 127)

#define PITCH_ORDER   5

#define GRID_SIZE   2

#define PULSE_MAX   6

#define GAIN_LEVELS   24

#define COS_TBL_SIZE   512

Enumerations

enum FrameType {
  ACTIVE_FRAME, SID_FRAME, UNTRANSMITTED_FRAME, INTRA_FRAME = 0,
  INTER_FRAME, SKIP_FRAME, FT_SHORT = 0, FT_MEDIUM,
  FT_LONG, FT_PPC
}

G723.1 frame types. More...

enum Rate { RATE_6300, RATE_5300 }

Variables

static const uint8_t frame_size [4] = { 24, 20, 4, 1 }

static const int16_t ppf_gain_weight [2] = {0x1800, 0x2000}

Postfilter gain weighting factors scaled by 2^15.

static const int16_t dc_lsp [LPC_ORDER]

LSP DC component.

static const int16_t cos_tab [COS_TBL_SIZE]

Cosine table scaled by 2^14.

static const int16_t lsp_band0 [LSP_CB_SIZE][3]

LSP VQ tables.

static const int16_t lsp_band1 [LSP_CB_SIZE][3]

static const int16_t lsp_band2 [LSP_CB_SIZE][4]

static const int32_t combinatorial_table [PULSE_MAX][SUBFRAME_LEN/GRID_SIZE]

Used for the coding/decoding of the pulses positions for the MP-MLQ codebook.

static const int16_t pitch_contrib [340]

static const int8_t pulses [4] = {6, 5, 6, 5}

Number of non-zero pulses in the MP-MLQ excitation.

static const int32_t max_pos [4] = {593775, 142506, 593775, 142506}

Size of the MP-MLQ fixed excitation codebooks.

static const int16_t fixed_cb_gain [GAIN_LEVELS]

static const int16_t adaptive_cb_gain85 [85 *20]

static const int16_t adaptive_cb_gain170 [170 *20]

static const int16_t postfilter_tbl [2][LPC_ORDER]

0.65^i (Zero part) and 0.75^i (Pole part) scaled by 2^15

static const int16_t hamming_window [LPC_FRAME]

Hamming window coefficients scaled by 2^15.

static const int16_t binomial_window [LPC_ORDER]

Binomial window coefficients scaled by 2^15.

static const int16_t bandwidth_expand [LPC_ORDER]

0.994^i scaled by 2^15

static const int16_t percept_flt_tbl [2][LPC_ORDER]

0.5^i scaled by 2^15

static const int cng_adaptive_cb_lag [4] = { 1, 0, 1, 3 }

static const int cng_filt [4] = { 273, 998, 499, 333 }

static const int cng_bseg [3] = { 2048, 18432, 231233 }

Detailed Description

G723.1 compatible decoder data tables.

Definition in file g723_1_data.h.

Define Documentation

#define COS_TBL_SIZE 512

Definition at line 47 of file g723_1_data.h.

#define FRAME_LEN (SUBFRAME_LEN << 2)

Definition at line 35 of file g723_1_data.h.

Referenced by autocorr_max(), comp_interp_index(), formant_postfilter(), g723_1_decode_frame(), generate_noise(), and residual_interp().

#define GAIN_LEVELS 24

Definition at line 46 of file g723_1_data.h.

Referenced by unpack_bitstream().

#define GRID_SIZE 2

Definition at line 44 of file g723_1_data.h.

Referenced by gen_fcb_excitation().

#define HALF_FRAME_LEN (FRAME_LEN / 2)

Definition at line 36 of file g723_1_data.h.

#define LPC_FRAME (HALF_FRAME_LEN + SUBFRAME_LEN)

Definition at line 37 of file g723_1_data.h.

#define LPC_ORDER 10

#define LSP_BANDS 3

Definition at line 39 of file g723_1_data.h.

#define LSP_CB_SIZE 256

Definition at line 40 of file g723_1_data.h.

#define PITCH_MAX (PITCH_MIN + 127)

Definition at line 42 of file g723_1_data.h.

Referenced by autocorr_max(), comp_interp_index(), ff_sipr_decode_frame_16k(), g723_1_decode_frame(), generate_noise(), get_residual(), and residual_interp().

#define PITCH_MIN 18

Definition at line 41 of file g723_1_data.h.

Referenced by ff_sipr_decode_frame_16k(), and unpack_bitstream().

#define PITCH_ORDER 5

Definition at line 43 of file g723_1_data.h.

Referenced by gen_acb_excitation(), and get_residual().

#define PULSE_MAX 6

Definition at line 45 of file g723_1_data.h.

Referenced by gen_fcb_excitation().

#define SUBFRAME_LEN 60

Definition at line 34 of file g723_1_data.h.

Referenced by comp_interp_index(), comp_ppf_coeff(), formant_postfilter(), g723_1_decode_frame(), gain_scale(), gen_acb_excitation(), gen_dirac_train(), gen_fcb_excitation(), generate_noise(), get_residual(), and unpack_bitstream().

#define SUBFRAMES 4

Definition at line 33 of file g723_1_data.h.

Enumeration Type Documentation

enum FrameType

G723.1 frame types.

Enumerator:

ACTIVE_FRAME	Active speech.
SID_FRAME	Silence Insertion Descriptor frame.
UNTRANSMITTED_FRAME
INTRA_FRAME
INTER_FRAME
SKIP_FRAME
FT_SHORT	Short frame (divided in n sub-blocks).
FT_MEDIUM	Medium frame (divided in m<n sub-blocks).
FT_LONG	Long frame (single sub-block + PPC).
FT_PPC	Periodic Peak Component (part of the long frame).

Definition at line 52 of file g723_1_data.h.

enum Rate

Enumerator:

RATE_6300
RATE_5300

Definition at line 60 of file g723_1_data.h.

Variable Documentation

const int16_t adaptive_cb_gain170[170 *20] [static]

Definition at line 836 of file g723_1_data.h.

Referenced by gen_acb_excitation().

const int16_t adaptive_cb_gain85[85 *20] [static]

Definition at line 620 of file g723_1_data.h.

Referenced by gen_acb_excitation().

const int16_t bandwidth_expand[LPC_ORDER] [static]

Initial value:

 {
    32571, 32376, 32182, 31989, 31797, 31606, 31416, 31228, 31040, 30854
}

0.994^i scaled by 2^15

Definition at line 1308 of file g723_1_data.h.

const int16_t binomial_window[LPC_ORDER] [static]

Initial value:

 {
    32749, 32695, 32604, 32477, 32315, 32118, 31887, 31622, 31324, 30995
}

Binomial window coefficients scaled by 2^15.

Definition at line 1301 of file g723_1_data.h.

const int cng_adaptive_cb_lag[4] = { 1, 0, 1, 3 } [static]

Definition at line 1322 of file g723_1_data.h.

Referenced by generate_noise().

const int cng_bseg[3] = { 2048, 18432, 231233 } [static]

Definition at line 1326 of file g723_1_data.h.

Referenced by estimate_sid_gain().

const int cng_filt[4] = { 273, 998, 499, 333 } [static]

Definition at line 1324 of file g723_1_data.h.

Referenced by estimate_sid_gain().

const int32_t combinatorial_table[PULSE_MAX][SUBFRAME_LEN/GRID_SIZE] [static]

Used for the coding/decoding of the pulses positions for the MP-MLQ codebook.

Definition at line 514 of file g723_1_data.h.

Referenced by gen_fcb_excitation().

const int16_t cos_tab[COS_TBL_SIZE] [static]

Cosine table scaled by 2^14.

Definition at line 131 of file g723_1_data.h.

Referenced by eval_lpcenv_or_interp(), and lsp2lpc().

const int16_t dc_lsp[LPC_ORDER] [static]

Initial value:

 {
    0x0c3b,
    0x1271,
    0x1e0a,
    0x2a36,
    0x3630,
    0x406f,
    0x4d28,
    0x56f4,
    0x638c,
    0x6c46
}

LSP DC component.

Definition at line 115 of file g723_1_data.h.

Referenced by g723_1_decode_init(), and inverse_quant().

const int16_t fixed_cb_gain[GAIN_LEVELS] [static]

Initial value:

 {
      1,    2,    3,    4,    6,    9,   13,   18,
     26,   38,   55,   80,  115,  166,  240,  348,
    502,  726, 1050, 1517, 2193, 3170, 4582, 6623,
}

Definition at line 614 of file g723_1_data.h.

Referenced by g723_1_decode_frame(), and gen_fcb_excitation().

const uint8_t frame_size[4] = { 24, 20, 4, 1 } [static]

Definition at line 58 of file g723_1_data.h.

Referenced by a64_write_packet(), alac_entropy_coder(), alac_linear_predictor(), amr_handle_packet(), avpriv_mpegaudio_decode_header(), build_feed_streams(), celt_header(), compute_frame_duration(), compute_pkt_fields2(), decode_frame(), decode_packet(), dfa_read_packet(), do_video_out(), encode_frame(), escape124_decode_frame(), ff_psy_preprocess(), ff_sipr_decode_frame_16k(), find_expected_header(), flic_decode_frame_15_16BPP(), flic_decode_frame_8BPP(), g723_1_decode_frame(), g723_1_read_packet(), get_audio_frame_size(), lmlm4_read_packet(), mp3_header_decompress(), mpegaudio_parse(), msrle_decode_pal4(), mxf_parse_dnxhd_frame(), mxf_parse_dv_frame(), mxf_write_d10_audio_packet(), new_subtitle_stream(), new_video_stream(), opus_packet(), prores_encode_frame(), qdm2_decode(), read_packet(), return_stored_frame(), rpl_read_packet(), rtp_send_ilbc(), rtp_write_header(), s302m_decode_frame(), s302m_parse_frame_header(), sdl_audio_callback(), smacker_read_packet(), source_init(), store_packet(), str_probe(), str_read_packet(), swf_write_video(), vc1t_read_packet(), wavpack_decode_frame(), xan_wc3_copy_pixel_run(), xan_wc3_output_pixel_run(), and xmv_fetch_video_packet().

const int16_t hamming_window[LPC_FRAME] [static]

Initial value:

 {
     2621,  2631,  2659,  2705,  2770,  2853,  2955,  3074,  3212,  3367,
     3541,  3731,  3939,  4164,  4405,  4663,  4937,  5226,  5531,  5851,
     6186,  6534,  6897,  7273,  7661,  8062,  8475,  8899,  9334,  9780,
    10235, 10699, 11172, 11653, 12141, 12636, 13138, 13645, 14157, 14673,
    15193, 15716, 16242, 16769, 17298, 17827, 18356, 18884, 19411, 19935,
    20457, 20975, 21489, 21999, 22503, 23002, 23494, 23978, 24455, 24924,
    25384, 25834, 26274, 26704, 27122, 27529, 27924, 28306, 28675, 29031,
    29373, 29700, 30012, 30310, 30592, 30857, 31107, 31340, 31557, 31756,
    31938, 32102, 32249, 32377, 32488, 32580, 32654, 32710, 32747, 32766,
    32766, 32747, 32710, 32654, 32580, 32488, 32377, 32249, 32102, 31938,
    31756, 31557, 31340, 31107, 30857, 30592, 30310, 30012, 29700, 29373,
    29031, 28675, 28306, 27924, 27529, 27122, 26704, 26274, 25834, 25384,
    24924, 24455, 23978, 23494, 23002, 22503, 21999, 21489, 20975, 20457,
    19935, 19411, 18884, 18356, 17827, 17298, 16769, 16242, 15716, 15193,
    14673, 14157, 13645, 13138, 12636, 12141, 11653, 11172, 10699, 10235,
     9780, 9334,   8899,  8475,  8062,  7661,  7273,  6897,  6534,  6186,
     5851, 5531,   5226,  4937,  4663,  4405,  4164,  3939,  3731,  3541,
     3367, 3212,   3074,  2955,  2853,  2770,  2705,  2659,  2631,  2621
}

Hamming window coefficients scaled by 2^15.

Definition at line 1277 of file g723_1_data.h.

const int16_t lsp_band0[LSP_CB_SIZE][3] [static]

LSP VQ tables.

Definition at line 201 of file g723_1_data.h.

Referenced by inverse_quant().

const int16_t lsp_band1[LSP_CB_SIZE][3] [static]

Definition at line 290 of file g723_1_data.h.

Referenced by inverse_quant().

const int16_t lsp_band2[LSP_CB_SIZE][4] [static]

Definition at line 379 of file g723_1_data.h.

Referenced by inverse_quant().

const int32_t max_pos[4] = {593775, 142506, 593775, 142506} [static]

Size of the MP-MLQ fixed excitation codebooks.

Definition at line 612 of file g723_1_data.h.

Referenced by gen_fcb_excitation().

const int16_t percept_flt_tbl[2][LPC_ORDER] [static]

Initial value:

 {
    
    {29491, 26542, 23888, 21499, 19349, 17414, 15673, 14106, 12695, 11425},
    
    {16384,  8192,  4096,  2048,  1024,   512,   256,   128,    64,    32}
}

0.5^i scaled by 2^15

Definition at line 1315 of file g723_1_data.h.

const int16_t pitch_contrib[340] [static]

Definition at line 558 of file g723_1_data.h.

Referenced by gen_fcb_excitation().

const int16_t postfilter_tbl[2][LPC_ORDER] [static]

Initial value:

 {
    
    {21299, 13844,  8999,  5849, 3802, 2471, 1606, 1044,  679,  441},
    
    {24576, 18432, 13824, 10368, 7776, 5832, 4374, 3281, 2460, 1845}
}

0.65^i (Zero part) and 0.75^i (Pole part) scaled by 2^15

Definition at line 1267 of file g723_1_data.h.

Referenced by formant_postfilter().

const int16_t ppf_gain_weight[2] = {0x1800, 0x2000} [static]

Postfilter gain weighting factors scaled by 2^15.

Definition at line 110 of file g723_1_data.h.

Referenced by comp_ppf_gains().

const int8_t pulses[4] = {6, 5, 6, 5} [static]

Number of non-zero pulses in the MP-MLQ excitation.

Definition at line 607 of file g723_1_data.h.

Referenced by gen_fcb_excitation(), generate_noise(), and synth_block_fcb_acb().


Data Structures
struct	G723_1_Subframe
	G723.1 unpacked data subframe. More...
struct	PPFParam
	Pitch postfilter parameters. More...
struct	HFParam
	Harmonic filter parameters. More...
struct	FCBParam
	Optimized fixed codebook excitation parameters. More...
Defines
#define	SUBFRAMES 4
#define	SUBFRAME_LEN 60
#define	FRAME_LEN (SUBFRAME_LEN << 2)
#define	HALF_FRAME_LEN (FRAME_LEN / 2)
#define	LPC_FRAME (HALF_FRAME_LEN + SUBFRAME_LEN)
#define	LPC_ORDER 10
#define	LSP_BANDS 3
#define	LSP_CB_SIZE 256
#define	PITCH_MIN 18
#define	PITCH_MAX (PITCH_MIN + 127)
#define	PITCH_ORDER 5
#define	GRID_SIZE 2
#define	PULSE_MAX 6
#define	GAIN_LEVELS 24
#define	COS_TBL_SIZE 512
Enumerations
enum	FrameType { ACTIVE_FRAME, SID_FRAME, UNTRANSMITTED_FRAME, INTRA_FRAME = 0, INTER_FRAME, SKIP_FRAME, FT_SHORT = 0, FT_MEDIUM, FT_LONG, FT_PPC }
	G723.1 frame types. More...
enum	Rate { RATE_6300, RATE_5300 }
Variables
static const uint8_t	frame_size [4] = { 24, 20, 4, 1 }
static const int16_t	ppf_gain_weight [2] = {0x1800, 0x2000}
	Postfilter gain weighting factors scaled by 2^15.
static const int16_t	dc_lsp [LPC_ORDER]
	LSP DC component.
static const int16_t	cos_tab [COS_TBL_SIZE]
	Cosine table scaled by 2^14.
static const int16_t	lsp_band0 [LSP_CB_SIZE][3]
	LSP VQ tables.
static const int16_t	lsp_band1 [LSP_CB_SIZE][3]
static const int16_t	lsp_band2 [LSP_CB_SIZE][4]
static const int32_t	combinatorial_table [PULSE_MAX][SUBFRAME_LEN/GRID_SIZE]
	Used for the coding/decoding of the pulses positions for the MP-MLQ codebook.
static const int16_t	pitch_contrib [340]
static const int8_t	pulses [4] = {6, 5, 6, 5}
	Number of non-zero pulses in the MP-MLQ excitation.
static const int32_t	max_pos [4] = {593775, 142506, 593775, 142506}
	Size of the MP-MLQ fixed excitation codebooks.
static const int16_t	fixed_cb_gain [GAIN_LEVELS]
static const int16_t	adaptive_cb_gain85 [85 *20]
static const int16_t	adaptive_cb_gain170 [170 *20]
static const int16_t	postfilter_tbl [2][LPC_ORDER]
	0.65^i (Zero part) and 0.75^i (Pole part) scaled by 2^15
static const int16_t	hamming_window [LPC_FRAME]
	Hamming window coefficients scaled by 2^15.
static const int16_t	binomial_window [LPC_ORDER]
	Binomial window coefficients scaled by 2^15.
static const int16_t	bandwidth_expand [LPC_ORDER]
	0.994^i scaled by 2^15
static const int16_t	percept_flt_tbl [2][LPC_ORDER]
	0.5^i scaled by 2^15
static const int	cng_adaptive_cb_lag [4] = { 1, 0, 1, 3 }
static const int	cng_filt [4] = { 273, 998, 499, 333 }
static const int	cng_bseg [3] = { 2048, 18432, 231233 }