libavcodec/adpcm_data.h File Reference

ADPCM tables. More...

#include <stdint.h>

Go to the source code of this file.

Variables
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 []

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Detailed Description

ADPCM tables.

Definition in file adpcm_data.h.

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Variable Documentation

const int16_t ff_adpcm_AdaptationTable[]

Definition at line 55 of file adpcm_data.c.

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

const uint8_t ff_adpcm_AdaptCoeff1[]

Divided by 4 to fit in 8-bit integers.

Definition at line 61 of file adpcm_data.c.

Referenced by adpcm_decode_frame(), and adpcm_encode_init().

const int8_t ff_adpcm_AdaptCoeff2[]

Divided by 4 to fit in 8-bit integers.

Definition at line 66 of file adpcm_data.c.

Referenced by adpcm_decode_frame(), and adpcm_encode_init().

const int8_t ff_adpcm_index_table[16]

Definition at line 31 of file adpcm_data.c.

Referenced by adpcm_compress_trellis(), adpcm_ima_compress_sample(), adpcm_ima_expand_nibble(), adpcm_ima_qt_compress_sample(), and adpcm_ima_qt_expand_nibble().

const int16_t ff_adpcm_step_table[89]

This is the step table.

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

Definition at line 40 of file adpcm_data.c.

Referenced by adpcm_compress_trellis(), adpcm_ima_compress_sample(), adpcm_ima_expand_nibble(), adpcm_ima_qt_compress_sample(), adpcm_ima_qt_expand_nibble(), and adpcm_swf_decode().

const int8_t ff_adpcm_yamaha_difflookup[]

Definition at line 75 of file adpcm_data.c.

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

const int16_t ff_adpcm_yamaha_indexscale[]

Definition at line 70 of file adpcm_data.c.

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