adpcm_data.h File Reference

ADPCM tables. More...

#include <stdint.h>

Go to the source code of this file.

Variables
static const uint8_t	ff_adpcm_ima_block_sizes [4] = { 4, 12, 4, 20 }
static const uint8_t	ff_adpcm_ima_block_samples [4] = { 16, 32, 8, 32 }
const int8_t	ff_adpcm_index_table [16]
const int16_t	ff_adpcm_step_table [89]
	This is the step table.
const int16_t	ff_adpcm_AdaptationTable []
const uint8_t	ff_adpcm_AdaptCoeff1 []
	Divided by 4 to fit in 8-bit integers.
const int8_t	ff_adpcm_AdaptCoeff2 []
	Divided by 4 to fit in 8-bit integers.
const int16_t	ff_adpcm_yamaha_indexscale []
const int8_t	ff_adpcm_yamaha_difflookup []

Detailed Description

ADPCM tables.

Definition in file adpcm_data.h.

Variable Documentation

ff_adpcm_ima_block_sizes

const uint8_t ff_adpcm_ima_block_sizes[4] = { 4, 12, 4, 20 }

static

Definition at line 31 of file adpcm_data.h.

Referenced by get_nb_samples().

ff_adpcm_ima_block_samples

const uint8_t ff_adpcm_ima_block_samples[4] = { 16, 32, 8, 32 }

static

Definition at line 32 of file adpcm_data.h.

Referenced by get_nb_samples().

ff_adpcm_index_table

const int8_t ff_adpcm_index_table[16]

extern

Definition at line 30 of file adpcm_data.c.

Referenced by adpcm_compress_trellis(), adpcm_ima_alp_compress_sample(), adpcm_ima_alp_expand_nibble(), adpcm_ima_compress_sample(), adpcm_ima_escape_expand_nibble(), adpcm_ima_expand_nibble(), adpcm_ima_oki_expand_nibble(), adpcm_ima_qt_compress_sample(), adpcm_mtaf_expand_nibble(), and ff_adpcm_ima_qt_expand_nibble().

ff_adpcm_step_table

const int16_t ff_adpcm_step_table[89]

extern

This is the step table.

Note that many programs use slight deviations from this table, but such deviations are negligible:

Definition at line 39 of file adpcm_data.c.

Referenced by adpcm_compress_trellis(), adpcm_ima_alp_compress_sample(), adpcm_ima_alp_expand_nibble(), adpcm_ima_compress_sample(), adpcm_ima_escape_expand_nibble(), adpcm_ima_expand_nibble(), adpcm_ima_mtf_expand_nibble(), adpcm_ima_qt_compress_sample(), adpcm_ima_wav_expand_nibble(), adpcm_swf_decode(), adpcm_zork_expand_nibble(), decode_frame(), ff_adpcm_ima_qt_expand_nibble(), and predict_table_init().

ff_adpcm_AdaptationTable

const int16_t ff_adpcm_AdaptationTable[]

extern

Definition at line 54 of file adpcm_data.c.

Referenced by adpcm_compress_trellis(), adpcm_ct_expand_nibble(), adpcm_ms_compress_sample(), and adpcm_ms_expand_nibble().

ff_adpcm_AdaptCoeff1

const uint8_t ff_adpcm_AdaptCoeff1[]

extern

Divided by 4 to fit in 8-bit integers.

Definition at line 60 of file adpcm_data.c.

Referenced by adpcm_decode_frame(), and adpcm_encode_init().

ff_adpcm_AdaptCoeff2

const int8_t ff_adpcm_AdaptCoeff2[]

extern

Divided by 4 to fit in 8-bit integers.

Definition at line 65 of file adpcm_data.c.

Referenced by adpcm_decode_frame(), and adpcm_encode_init().

ff_adpcm_yamaha_indexscale

const int16_t ff_adpcm_yamaha_indexscale[]

extern

Definition at line 69 of file adpcm_data.c.

Referenced by adpcm_compress_trellis(), adpcm_yamaha_compress_sample(), and adpcm_yamaha_expand_nibble().

ff_adpcm_yamaha_difflookup

const int8_t ff_adpcm_yamaha_difflookup[]

extern

Definition at line 74 of file adpcm_data.c.

Referenced by adpcm_ima_compress_sample(), adpcm_yamaha_compress_sample(), and adpcm_yamaha_expand_nibble().