ima_adpcm.h File Reference

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Classes
struct	ima_adpcm_state_t
Functions
ima_adpcm_state_t *	ima_adpcm_init (ima_adpcm_state_t *s)
int	ima_adpcm_release (ima_adpcm_state_t *s)
int	ima_adpcm_to_linear (ima_adpcm_state_t *s, int16_t *amp, const uint8_t *ima_data, int ima_bytes)
int	ima_linear_to_adpcm (ima_adpcm_state_t *s, uint8_t *ima_data, const int16_t *amp, int samples)

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Detailed Description

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Function Documentation

ima_adpcm_state_t* ima_adpcm_init

(

ima_adpcm_state_t *

s

)

Initialise an IMA ADPCM encode or decode context.

Parameters:

s

The IMA ADPCM context

Returns:

A pointer to the IMA ADPCM context, or NULL for error.

int ima_adpcm_release

(

ima_adpcm_state_t *

s

)

Free an IMA ADPCM encode or decode context.

Parameters:

s

The IMA ADPCM context.

Returns:

0 for OK.

int ima_adpcm_to_linear	(	ima_adpcm_state_t *	s,
		int16_t *	amp,
		const uint8_t *	ima_data,
		int	ima_bytes
	)

Decode a buffer of IMA ADPCM data to linear PCM.

Parameters:

	s	The IMA ADPCM context.
	amp
	ima_data
	ima_bytes

Returns:

The number of samples returned.

int ima_linear_to_adpcm	(	ima_adpcm_state_t *	s,
		uint8_t *	ima_data,
		const int16_t *	amp,
		int	samples
	)

Encode a buffer of linear PCM data to IMA ADPCM.

Parameters:

	s	The IMA ADPCM context.
	ima_data
	amp
	samples

Returns:

The number of bytes of IMA ADPCM data produced.

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