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Classes | |
struct | g726_state_s |
Typedefs | |
typedef int16_t(*) | g726_decoder_func_t (struct g726_state_s *s, uint8_t code) |
typedef uint8_t(*) | g726_encoder_func_t (struct g726_state_s *s, int16_t amp) |
typedef g726_state_s | g726_state_t |
Enumerations | |
enum | { G726_ENCODING_LINEAR = 0, G726_ENCODING_ULAW, G726_ENCODING_ALAW } |
enum | { G726_PACKING_NONE = 0, G726_PACKING_LEFT = 1, G726_PACKING_RIGHT = 2 } |
Functions | |
g726_state_t * | g726_init (g726_state_t *s, int bit_rate, int ext_coding, int packing) |
int | g726_release (g726_state_t *s) |
int | g726_decode (g726_state_t *s, int16_t amp[], const uint8_t g726_data[], int g726_bytes) |
int | g726_encode (g726_state_t *s, uint8_t g726_data[], const int16_t amp[], int len) |
int g726_decode | ( | g726_state_t * | s, | |
int16_t | amp[], | |||
const uint8_t | g726_data[], | |||
int | g726_bytes | |||
) |
Decode a buffer of G.726 ADPCM data to linear PCM, a-law or u-law.
s | The G.726 context. | |
amp | The audio sample buffer. | |
g726_data | ||
g726_bytes |
int g726_encode | ( | g726_state_t * | s, | |
uint8_t | g726_data[], | |||
const int16_t | amp[], | |||
int | len | |||
) |
Encode a buffer of linear PCM data to G.726 ADPCM.
s | The G.726 context. | |
g726_data | The G.726 data produced. | |
amp | The audio sample buffer. | |
len | The number of samples in the buffer. |
g726_state_t* g726_init | ( | g726_state_t * | s, | |
int | bit_rate, | |||
int | ext_coding, | |||
int | packing | |||
) |
Initialise a G.726 encode or decode context.
s | The G.726 context. | |
bit_rate | The required bit rate for the ADPCM data. The valid rates are 16000, 24000, 32000 and 40000. | |
ext_coding | The coding used outside G.726. | |
packing | One of the G.726_PACKING_xxx options. |
int g726_release | ( | g726_state_t * | s | ) |
Free a G.726 encode or decode context.
s | The G.726 context. |