Opus SILK decoder. More...

#include <stdint.h>
#include "opus.h"

Data Structures
struct	SilkFrame

struct	SilkContext

Macros
#define	SILK_MAX_LAG (288 + LTP_ORDER / 2)
	Maximum residual history according to 4.2.7.6.1.

#define	LTP_ORDER 5
	Order of the LTP filter.

Functions
static void	silk_stabilize_lsf (int16_t nlsf[16], int order, const uint16_t min_delta[17])

static int	silk_is_lpc_stable (const int16_t lpc[16], int order)

static void	silk_lsp2poly (const int32_t lsp[16], int32_t pol[16], int half_order)

static void	silk_lsf2lpc (const int16_t nlsf[16], float lpcf[16], int order)

static void	silk_decode_lpc (SilkContext s, SilkFrame frame, OpusRangeCoder rc, float lpc_leadin[16], float lpc[16], int lpc_order, int *has_lpc_leadin, int voiced)

static void	silk_count_children (OpusRangeCoder *rc, int model, int32_t total, int32_t child[2])

static void	silk_decode_excitation (SilkContext s, OpusRangeCoder rc, float *excitationf, int qoffset_high, int active, int voiced)

static void	silk_decode_frame (SilkContext s, OpusRangeCoder rc, int frame_num, int channel, int coded_channels, int active, int active1)

static void	silk_unmix_ms (SilkContext s, float l, float *r)

static void	silk_flush_frame (SilkFrame *frame)

int	ff_silk_decode_superframe (SilkContext s, OpusRangeCoder rc, float *output[2], enum OpusBandwidth bandwidth, int coded_channels, int duration_ms)
	Decode the LP layer of one Opus frame (which may correspond to several SILK frames).

void	ff_silk_free (SilkContext **ps)

void	ff_silk_flush (SilkContext *s)

int	ff_silk_init (AVCodecContext avctx, SilkContext *ps, int output_channels)

Variables
static const uint16_t	silk_model_stereo_s1 []

static const uint16_t	silk_model_stereo_s2 [] = {256, 85, 171, 256}

static const uint16_t	silk_model_stereo_s3 [] = {256, 51, 102, 154, 205, 256}

static const uint16_t	silk_model_mid_only [] = {256, 192, 256}

static const uint16_t	silk_model_frame_type_inactive [] = {256, 26, 256}

static const uint16_t	silk_model_frame_type_active [] = {256, 24, 98, 246, 256}

static const uint16_t	silk_model_gain_highbits [3][9]

static const uint16_t	silk_model_gain_lowbits [] = {256, 32, 64, 96, 128, 160, 192, 224, 256}

static const uint16_t	silk_model_gain_delta []

static const uint16_t	silk_model_lsf_s1 [2][2][33]

static const uint16_t	silk_model_lsf_s2 [32][10]

static const uint16_t	silk_model_lsf_s2_ext [] = { 256, 156, 216, 240, 249, 253, 255, 256 }

static const uint16_t	silk_model_lsf_interpolation_offset [] = { 256, 13, 35, 64, 75, 256 }

static const uint16_t	silk_model_pitch_highbits []

static const uint16_t	silk_model_pitch_lowbits_nb [] = { 256, 64, 128, 192, 256 }

static const uint16_t	silk_model_pitch_lowbits_mb [] = { 256, 43, 85, 128, 171, 213, 256 }

static const uint16_t	silk_model_pitch_lowbits_wb [] = { 256, 32, 64, 96, 128, 160, 192, 224, 256 }

static const uint16_t	silk_model_pitch_delta []

static const uint16_t	silk_model_pitch_contour_nb10ms [] = { 256, 143, 193, 256 }

static const uint16_t	silk_model_pitch_contour_nb20ms []

static const uint16_t	silk_model_pitch_contour_mbwb10ms []

static const uint16_t	silk_model_pitch_contour_mbwb20ms []

static const uint16_t	silk_model_ltp_filter [] = { 256, 77, 157, 256 }

static const uint16_t	silk_model_ltp_filter0_sel []

static const uint16_t	silk_model_ltp_filter1_sel []

static const uint16_t	silk_model_ltp_filter2_sel []

static const uint16_t	silk_model_ltp_scale_index [] = { 256, 128, 192, 256 }

static const uint16_t	silk_model_lcg_seed [] = { 256, 64, 128, 192, 256 }

static const uint16_t	silk_model_exc_rate [2][10]

static const uint16_t	silk_model_pulse_count [11][19]

static const uint16_t	silk_model_pulse_location [4][168]

static const uint16_t	silk_model_excitation_lsb [] = {256, 136, 256}

static const uint16_t	silk_model_excitation_sign [3][2][7][3]

static const int16_t	silk_stereo_weights []

static const uint8_t	silk_lsf_s2_model_sel_nbmb [32][10]

static const uint8_t	silk_lsf_s2_model_sel_wb [32][16]

static const uint8_t	silk_lsf_pred_weights_nbmb [2][9]

static const uint8_t	silk_lsf_pred_weights_wb [2][15]

static const uint8_t	silk_lsf_weight_sel_nbmb [32][9]

static const uint8_t	silk_lsf_weight_sel_wb [32][15]

static const uint8_t	silk_lsf_codebook_nbmb [32][10]

static const uint8_t	silk_lsf_codebook_wb [32][16]

static const uint16_t	silk_lsf_min_spacing_nbmb []

static const uint16_t	silk_lsf_min_spacing_wb []

static const uint8_t	silk_lsf_ordering_nbmb []

static const uint8_t	silk_lsf_ordering_wb []

static const int16_t	silk_cosine []

static const uint16_t	silk_pitch_scale [] = { 4, 6, 8}

static const uint16_t	silk_pitch_min_lag [] = { 16, 24, 32}

static const uint16_t	silk_pitch_max_lag [] = {144, 216, 288}

static const int8_t	silk_pitch_offset_nb10ms [3][2]

static const int8_t	silk_pitch_offset_nb20ms [11][4]

static const int8_t	silk_pitch_offset_mbwb10ms [12][2]

static const int8_t	silk_pitch_offset_mbwb20ms [34][4]

static const int8_t	silk_ltp_filter0_taps [8][5]

static const int8_t	silk_ltp_filter1_taps [16][5]

static const int8_t	silk_ltp_filter2_taps [32][5]

static const uint16_t	silk_ltp_scale_factor [] = {15565, 12288, 8192}

static const uint8_t	silk_shell_blocks [3][2]

static const uint8_t	silk_quant_offset [2][2]

static const int	silk_stereo_interp_len [3]

Detailed Description

Opus SILK decoder.

Definition in file opus_silk.c.

Macro Definition Documentation

#define SILK_MAX_LAG (288 + LTP_ORDER / 2)

Maximum residual history according to 4.2.7.6.1.

Definition at line 1218 of file opus_silk.c.

Referenced by silk_decode_frame().

#define LTP_ORDER 5

Order of the LTP filter.

Definition at line 1221 of file opus_silk.c.

Referenced by silk_decode_frame().

Function Documentation

static void silk_stabilize_lsf	(	int16_t	nlsf[16],
		int	order,
		const uint16_t	min_delta[17]
	)

inlinestatic

Definition at line 788 of file opus_silk.c.

Referenced by silk_decode_lpc().

static int silk_is_lpc_stable	(	const int16_t	lpc[16],
		int	order
	)

inlinestatic

Definition at line 867 of file opus_silk.c.

Referenced by silk_lsf2lpc().

static void silk_lsp2poly	(	const int32_t	lsp[16],
		int32_t	pol[16],
		int	half_order
	)

static

Definition at line 918 of file opus_silk.c.

Referenced by silk_lsf2lpc().

static void silk_lsf2lpc	(	const int16_t	nlsf[16],
		float	lpcf[16],
		int	order
	)

static

Definition at line 934 of file opus_silk.c.

Referenced by silk_decode_lpc().

static void silk_decode_lpc	(	SilkContext *	s,
		SilkFrame *	frame,
		OpusRangeCoder *	rc,
		float	lpc_leadin[16],
		float	lpc[16],
		int *	lpc_order,
		int *	has_lpc_leadin,
		int	voiced
	)

inlinestatic

Definition at line 1019 of file opus_silk.c.

Referenced by silk_decode_frame().

static void silk_count_children	(	OpusRangeCoder *	rc,
		int	model,
		int32_t	total,
		int32_t	child[2]
	)

inlinestatic

Definition at line 1116 of file opus_silk.c.

Referenced by silk_decode_excitation().

static void silk_decode_excitation	(	SilkContext *	s,
		OpusRangeCoder *	rc,
		float *	excitationf,
		int	qoffset_high,
		int	active,
		int	voiced
	)

inlinestatic

Definition at line 1129 of file opus_silk.c.

Referenced by silk_decode_frame().

static void silk_decode_frame	(	SilkContext *	s,
		OpusRangeCoder *	rc,
		int	frame_num,
		int	channel,
		int	coded_channels,
		int	active,
		int	active1
	)

static

Definition at line 1223 of file opus_silk.c.

Referenced by ff_silk_decode_superframe().

static void silk_unmix_ms	(	SilkContext *	s,
		float *	l,
		float *	r
	)

static

Definition at line 1450 of file opus_silk.c.

Referenced by ff_silk_decode_superframe().

static void silk_flush_frame ( SilkFrame * frame )

static

Definition at line 1480 of file opus_silk.c.

Referenced by ff_silk_decode_superframe(), and ff_silk_flush().

int ff_silk_decode_superframe	(	SilkContext *	s,
		OpusRangeCoder *	rc,
		float *	output[2],
		enum OpusBandwidth	bandwidth,
		int	coded_channels,
		int	duration_ms
	)

Decode the LP layer of one Opus frame (which may correspond to several SILK frames).

Definition at line 1498 of file opus_silk.c.

Referenced by opus_decode_frame().

void ff_silk_free ( SilkContext ** ps )

Definition at line 1562 of file opus_silk.c.

Referenced by opus_decode_close().

void ff_silk_flush ( SilkContext * s )

Definition at line 1567 of file opus_silk.c.

Referenced by ff_silk_init(), opus_decode_flush(), and opus_decode_frame().

int ff_silk_init	(	AVCodecContext *	avctx,
		SilkContext **	ps,
		int	output_channels
	)

Definition at line 1575 of file opus_silk.c.

Referenced by opus_decode_init().

Variable Documentation

const uint16_t silk_model_stereo_s1[]

static

Initial value:

= {
    256,   7,   9,  10,  11,  12,  22,  46,  54,  55,  56,  59,  82, 174, 197, 200,
    201, 202, 210, 234, 244, 245, 246, 247, 249, 256
}

Definition at line 64 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_stereo_s2[] = {256, 85, 171, 256}

static

Definition at line 69 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_stereo_s3[] = {256, 51, 102, 154, 205, 256}

static

Definition at line 71 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_mid_only[] = {256, 192, 256}

static

Definition at line 73 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_frame_type_inactive[] = {256, 26, 256}

static

Definition at line 75 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_frame_type_active[] = {256, 24, 98, 246, 256}

static

Definition at line 77 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_gain_highbits[3][9]

static

Initial value:

= {
    {256,  32, 144, 212, 241, 253, 254, 255, 256},
    {256,   2,  19,  64, 124, 186, 233, 252, 256},
    {256,   1,   4,  30, 101, 195, 245, 254, 256}
}

Definition at line 79 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_gain_lowbits[] = {256, 32, 64, 96, 128, 160, 192, 224, 256}

static

Definition at line 85 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_gain_delta[]

static

Initial value:

= {
    256,   6,  11,  22,  53, 185, 206, 214, 218, 221, 223, 225, 227, 228, 229, 230,
    231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246,
    247, 248, 249, 250, 251, 252, 253, 254, 255, 256
}

Definition at line 87 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_lsf_s1[2][2][33]

static

Initial value:

= {
    {
        {    
            256,  44,  78, 108, 127, 148, 160, 171, 174, 177, 179, 195, 197, 199, 200, 205,
            207, 208, 211, 214, 215, 216, 218, 220, 222, 225, 226, 235, 244, 246, 253, 255, 256
        }, { 
            256,   1,  11,  12,  20,  23,  31,  39,  53,  66,  80,  81,  95, 107, 120, 131,
            142, 154, 165, 175, 185, 196, 204, 213, 221, 228, 236, 237, 238, 244, 245, 251, 256
        }
    }, {
        {    
            256,  31,  52,  55,  72,  73,  81,  98, 102, 103, 121, 137, 141, 143, 146, 147,
            157, 158, 161, 177, 188, 204, 206, 208, 211, 213, 224, 225, 229, 238, 246, 253, 256
        }, { 
            256,   1,   5,  21,  26,  44,  55,  60,  74,  89,  90,  93, 105, 118, 132, 146,
            152, 166, 178, 180, 186, 187, 199, 211, 222, 232, 235, 245, 250, 251, 252, 253, 256
        }
    }
}

Definition at line 92 of file opus_silk.c.

Referenced by silk_decode_lpc().

const uint16_t silk_model_lsf_s2[32][10]

static

Initial value:

= {
    
    { 256,   1,   2,   3,  18, 242, 253, 254, 255, 256 },
    { 256,   1,   2,   4,  38, 221, 253, 254, 255, 256 },
    { 256,   1,   2,   6,  48, 197, 252, 254, 255, 256 },
    { 256,   1,   2,  10,  62, 185, 246, 254, 255, 256 },
    { 256,   1,   4,  20,  73, 174, 248, 254, 255, 256 },
    { 256,   1,   4,  21,  76, 166, 239, 254, 255, 256 },
    { 256,   1,   8,  32,  85, 159, 226, 252, 255, 256 },
    { 256,   1,   2,  20,  83, 161, 219, 249, 255, 256 },
    
    { 256,   1,   2,   3,  12, 244, 253, 254, 255, 256 },
    { 256,   1,   2,   4,  32, 218, 253, 254, 255, 256 },
    { 256,   1,   2,   5,  47, 199, 252, 254, 255, 256 },
    { 256,   1,   2,  12,  61, 187, 252, 254, 255, 256 },
    { 256,   1,   5,  24,  72, 172, 249, 254, 255, 256 },
    { 256,   1,   2,  16,  70, 170, 242, 254, 255, 256 },
    { 256,   1,   2,  17,  78, 165, 226, 251, 255, 256 },
    { 256,   1,   8,  29,  79, 156, 237, 254, 255, 256 }
}

Definition at line 112 of file opus_silk.c.

Referenced by silk_decode_lpc().

const uint16_t silk_model_lsf_s2_ext[] = { 256, 156, 216, 240, 249, 253, 255, 256 }

static

Definition at line 134 of file opus_silk.c.

Referenced by silk_decode_lpc().

const uint16_t silk_model_lsf_interpolation_offset[] = { 256, 13, 35, 64, 75, 256 }

static

Definition at line 136 of file opus_silk.c.

Referenced by silk_decode_lpc().

const uint16_t silk_model_pitch_highbits[]

static

Initial value:

= {
    256,   3,   6,  12,  23,  44,  74, 106, 125, 136, 146, 158, 171, 184, 196, 207,
    216, 224, 231, 237, 241, 243, 245, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256
}

Definition at line 138 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_pitch_lowbits_nb[] = { 256, 64, 128, 192, 256 }

static

Definition at line 143 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_pitch_lowbits_mb[] = { 256, 43, 85, 128, 171, 213, 256 }

static

Definition at line 145 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_pitch_lowbits_wb[] = { 256, 32, 64, 96, 128, 160, 192, 224, 256 }

static

Definition at line 147 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_pitch_delta[]

static

Initial value:

= {
    256,  46,  48,  50,  53,  57,  63,  73,  88, 114, 152, 182, 204, 219, 229, 236,
    242, 246, 250, 252, 254, 256
}

Definition at line 149 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_pitch_contour_nb10ms[] = { 256, 143, 193, 256 }

static

Definition at line 154 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_pitch_contour_nb20ms[]

static

Initial value:

= {
    256,  68,  80, 101, 118, 137, 159, 189, 213, 230, 246, 256
}

Definition at line 156 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_pitch_contour_mbwb10ms[]

static

Initial value:

= {
    256,  91, 137, 176, 195, 209, 221, 229, 236, 242, 247, 252, 256
}

Definition at line 160 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_pitch_contour_mbwb20ms[]

static

Initial value:

= {
    256,  33,  55,  73,  89, 104, 118, 132, 145, 158, 168, 177, 186, 194, 200, 206,
    212, 217, 221, 225, 229, 232, 235, 238, 240, 242, 244, 246, 248, 250, 252, 253,
    254, 255, 256
}

Definition at line 164 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_ltp_filter[] = { 256, 77, 157, 256 }

static

Definition at line 170 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_ltp_filter0_sel[]

static

Initial value:

= {
    256, 185, 200, 213, 226, 235, 244, 250, 256
}

Definition at line 172 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_ltp_filter1_sel[]

static

Initial value:

= {
    256,  57,  91, 112, 132, 147, 160, 172, 185, 195, 205, 214, 224, 233, 241, 248, 256
}

Definition at line 176 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_ltp_filter2_sel[]

static

Initial value:

= {
    256,  15,  31,  45,  57,  69,  81,  92, 103, 114, 124, 133, 142, 151, 160, 168,
    176, 184, 192, 199, 206, 212, 218, 223, 227, 232, 236, 240, 244, 247, 251, 254, 256
}

Definition at line 180 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_ltp_scale_index[] = { 256, 128, 192, 256 }

static

Definition at line 185 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_model_lcg_seed[] = { 256, 64, 128, 192, 256 }

static

Definition at line 187 of file opus_silk.c.

Referenced by silk_decode_excitation().

const uint16_t silk_model_exc_rate[2][10]

static

Initial value:

= {
    { 256,  15,  66,  78, 124, 169, 182, 215, 242, 256 }, 
    { 256,  33,  63,  99, 116, 150, 199, 217, 238, 256 }  
}

Definition at line 189 of file opus_silk.c.

Referenced by silk_decode_excitation().

const uint16_t silk_model_pulse_count[11][19]

static

Initial value:

= {
    { 256, 131, 205, 230, 238, 241, 244, 245, 246,
      247, 248, 249, 250, 251, 252, 253, 254, 255, 256 },
    { 256,  58, 151, 211, 234, 241, 244, 245, 246,
      247, 248, 249, 250, 251, 252, 253, 254, 255, 256 },
    { 256,  43,  94, 140, 173, 197, 213, 224, 232,
      238, 241, 244, 247, 249, 250, 251, 253, 254, 256 },
    { 256,  17,  69, 140, 197, 228, 240, 245, 246,
      247, 248, 249, 250, 251, 252, 253, 254, 255, 256 },
    { 256,   6,  27,  68, 121, 170, 205, 226, 237,
      243, 246, 248, 250, 251, 252, 253, 254, 255, 256 },
    { 256,   7,  21,  43,  71, 100, 128, 153, 173,
      190, 203, 214, 223, 230, 235, 239, 243, 246, 256 },
    { 256,   2,   7,  21,  50,  92, 138, 179, 210,
      229, 240, 246, 249, 251, 252, 253, 254, 255, 256 },
    { 256,   1,   3,   7,  17,  36,  65, 100, 137,
      171, 199, 219, 233, 241, 246, 250, 252, 254, 256 },
    { 256,   1,   3,   5,  10,  19,  33,  53,  77,
      104, 132, 158, 181, 201, 216, 227, 235, 241, 256 },
    { 256,   1,   2,   3,   9,  36,  94, 150, 189,
      214, 228, 238, 244, 247, 250, 252, 253, 254, 256 },
    { 256,   2,   3,   9,  36,  94, 150, 189, 214,
      228, 238, 244, 247, 250, 252, 253, 254, 256, 256 }
}

Definition at line 194 of file opus_silk.c.

Referenced by silk_decode_excitation().

const uint16_t silk_model_pulse_location[4][168]

static

Definition at line 219 of file opus_silk.c.

Referenced by silk_count_children().

const uint16_t silk_model_excitation_lsb[] = {256, 136, 256}

static

Definition at line 291 of file opus_silk.c.

Referenced by silk_decode_excitation().

const uint16_t silk_model_excitation_sign[3][2][7][3]

static

Definition at line 293 of file opus_silk.c.

Referenced by silk_decode_excitation().

const int16_t silk_stereo_weights[]

static

Initial value:

= {
    -13732, -10050,  -8266,  -7526,  -6500,  -5000,  -2950,   -820,
       820,   2950,   5000,   6500,   7526,   8266,  10050,  13732
}

Definition at line 351 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint8_t silk_lsf_s2_model_sel_nbmb[32][10]

static

Definition at line 356 of file opus_silk.c.

Referenced by silk_decode_lpc().

const uint8_t silk_lsf_s2_model_sel_wb[32][16]

static

Definition at line 391 of file opus_silk.c.

Referenced by silk_decode_lpc().

const uint8_t silk_lsf_pred_weights_nbmb[2][9]

static

Initial value:

= {
    {179, 138, 140, 148, 151, 149, 153, 151, 163},
    {116,  67,  82,  59,  92,  72, 100,  89,  92}
}

Definition at line 426 of file opus_silk.c.

Referenced by silk_decode_lpc().

const uint8_t silk_lsf_pred_weights_wb[2][15]

static

Initial value:

= {
    {175, 148, 160, 176, 178, 173, 174, 164, 177, 174, 196, 182, 198, 192, 182},
    { 68,  62,  66,  60,  72, 117,  85,  90, 118, 136, 151, 142, 160, 142, 155}
}

Definition at line 431 of file opus_silk.c.

Referenced by silk_decode_lpc().

const uint8_t silk_lsf_weight_sel_nbmb[32][9]

static

Definition at line 436 of file opus_silk.c.

Referenced by silk_decode_lpc().

const uint8_t silk_lsf_weight_sel_wb[32][15]

static

Definition at line 471 of file opus_silk.c.

Referenced by silk_decode_lpc().

const uint8_t silk_lsf_codebook_nbmb[32][10]

static

Definition at line 506 of file opus_silk.c.

Referenced by silk_decode_lpc().

const uint8_t silk_lsf_codebook_wb[32][16]

static

Definition at line 541 of file opus_silk.c.

Referenced by silk_decode_lpc().

const uint16_t silk_lsf_min_spacing_nbmb[]

static

Initial value:

= {
    250, 3, 6, 3, 3, 3, 4, 3, 3, 3, 461
}

Definition at line 576 of file opus_silk.c.

Referenced by silk_decode_lpc().

const uint16_t silk_lsf_min_spacing_wb[]

static

Initial value:

= {
    100, 3, 40, 3, 3, 3, 5, 14, 14, 10, 11, 3, 8, 9, 7, 3, 347
}

Definition at line 580 of file opus_silk.c.

Referenced by silk_decode_lpc().

const uint8_t silk_lsf_ordering_nbmb[]

static

Initial value:

= {
    0, 9, 6, 3, 4, 5, 8, 1, 2, 7
}

Definition at line 584 of file opus_silk.c.

Referenced by silk_lsf2lpc().

const uint8_t silk_lsf_ordering_wb[]

static

Initial value:

= {
    0, 15, 8, 7, 4, 11, 12, 3, 2, 13, 10, 5, 6, 9, 14, 1
}

Definition at line 588 of file opus_silk.c.

Referenced by silk_lsf2lpc().

const int16_t silk_cosine[]

static

Definition at line 592 of file opus_silk.c.

Referenced by silk_lsf2lpc().

const uint16_t silk_pitch_scale[] = { 4, 6, 8}

static

Definition at line 628 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_pitch_min_lag[] = { 16, 24, 32}

static

Definition at line 630 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_pitch_max_lag[] = {144, 216, 288}

static

Definition at line 632 of file opus_silk.c.

Referenced by silk_decode_frame().

const int8_t silk_pitch_offset_nb10ms[3][2]

static

Initial value:

= {
    { 0,  0},
    { 1,  0},
    { 0,  1}
}

Definition at line 634 of file opus_silk.c.

Referenced by silk_decode_frame().

const int8_t silk_pitch_offset_nb20ms[11][4]

static

Initial value:

= {
    { 0,  0,  0,  0},
    { 2,  1,  0, -1},
    {-1,  0,  1,  2},
    {-1,  0,  0,  1},
    {-1,  0,  0,  0},
    { 0,  0,  0,  1},
    { 0,  0,  1,  1},
    { 1,  1,  0,  0},
    { 1,  0,  0,  0},
    { 0,  0,  0, -1},
    { 1,  0,  0, -1}
}

Definition at line 640 of file opus_silk.c.

Referenced by silk_decode_frame().

const int8_t silk_pitch_offset_mbwb10ms[12][2]

static

Initial value:

= {
    { 0,  0},
    { 0,  1},
    { 1,  0},
    {-1,  1},
    { 1, -1},
    {-1,  2},
    { 2, -1},
    {-2,  2},
    { 2, -2},
    {-2,  3},
    { 3, -2},
    {-3,  3}
}

Definition at line 654 of file opus_silk.c.

Referenced by silk_decode_frame().

const int8_t silk_pitch_offset_mbwb20ms[34][4]

static

Definition at line 669 of file opus_silk.c.

Referenced by silk_decode_frame().

const int8_t silk_ltp_filter0_taps[8][5]

static

Initial value:

= {
    {  4,   6,  24,   7,   5},
    {  0,   0,   2,   0,   0},
    { 12,  28,  41,  13,  -4},
    { -9,  15,  42,  25,  14},
    {  1,  -2,  62,  41,  -9},
    {-10,  37,  65,  -4,   3},
    { -6,   4,  66,   7,  -8},
    { 16,  14,  38,  -3,  33}
}

Definition at line 706 of file opus_silk.c.

Referenced by silk_decode_frame().

const int8_t silk_ltp_filter1_taps[16][5]

static

Initial value:

= {
    { 13,  22,  39,  23,  12},
    { -1,  36,  64,  27,  -6},
    { -7,  10,  55,  43,  17},
    {  1,   1,   8,   1,   1},
    {  6, -11,  74,  53,  -9},
    {-12,  55,  76, -12,   8},
    { -3,   3,  93,  27,  -4},
    { 26,  39,  59,   3,  -8},
    {  2,   0,  77,  11,   9},
    { -8,  22,  44,  -6,   7},
    { 40,   9,  26,   3,   9},
    { -7,  20, 101,  -7,   4},
    {  3,  -8,  42,  26,   0},
    {-15,  33,  68,   2,  23},
    { -2,  55,  46,  -2,  15},
    {  3,  -1,  21,  16,  41}
}

Definition at line 717 of file opus_silk.c.

Referenced by silk_decode_frame().

const int8_t silk_ltp_filter2_taps[32][5]

static

Definition at line 736 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint16_t silk_ltp_scale_factor[] = {15565, 12288, 8192}

static

Definition at line 771 of file opus_silk.c.

Referenced by silk_decode_frame().

const uint8_t silk_shell_blocks[3][2]

static

Initial value:

= {
    { 5, 10}, 
    { 8, 15}, 
    {10, 20}  
}

Definition at line 773 of file opus_silk.c.

Referenced by silk_decode_excitation().

const uint8_t silk_quant_offset[2][2]

static

Initial value:

= { 
    {25, 60}, 
    { 8, 25}  
}

Definition at line 779 of file opus_silk.c.

Referenced by silk_decode_excitation().

const int silk_stereo_interp_len[3]

static

Initial value:

= {
    64, 96, 128
}

Definition at line 784 of file opus_silk.c.

Referenced by silk_unmix_ms().

Data Structures

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

Function Documentation

Variable Documentation