src/spandsp/g722.h File Reference
Go to the source code of this file.
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Classes |
struct | g722_band_t |
struct | g722_encode_state_t |
struct | g722_decode_state_t |
Enumerations |
enum | { G722_SAMPLE_RATE_8000 = 0x0001,
G722_PACKED = 0x0002
} |
Functions |
g722_encode_state_t * | g722_encode_init (g722_encode_state_t *s, int rate, int options) |
int | g722_encode_release (g722_encode_state_t *s) |
int | g722_encode (g722_encode_state_t *s, uint8_t g722_data[], const int16_t amp[], int len) |
g722_decode_state_t * | g722_decode_init (g722_decode_state_t *s, int rate, int options) |
int | g722_decode_release (g722_decode_state_t *s) |
int | g722_decode (g722_decode_state_t *s, int16_t amp[], const uint8_t g722_data[], int len) |
Detailed Description
Function Documentation
int g722_decode |
( |
g722_decode_state_t * |
s, |
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int16_t |
amp[], |
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const uint8_t |
g722_data[], |
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int |
len | |
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) |
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Decode a buffer of G.722 data to linear PCM.
- Parameters:
-
| s | The G.722 context. |
| amp | The audio sample buffer. |
| g722_data | |
| len | |
- Returns:
- The number of samples returned.
References vec_circular_dot_prodi16().
g722_decode_state_t* g722_decode_init |
( |
g722_decode_state_t * |
s, |
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int |
rate, |
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int |
options | |
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) |
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Initialise an G.722 decode context.
- Parameters:
-
| s | The G.722 decode context. |
| rate | The bit rate of the G.722 data. The valid rates are 64000, 56000 and 48000. |
| options | |
- Returns:
- A pointer to the G.722 decode context, or NULL for error.
int g722_encode |
( |
g722_encode_state_t * |
s, |
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uint8_t |
g722_data[], |
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const int16_t |
amp[], |
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int |
len | |
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) |
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Encode a buffer of linear PCM data to G.722
- Parameters:
-
| s | The G.722 context. |
| g722_data | The G.722 data produced. |
| amp | The audio sample buffer. |
| len | The number of samples in the buffer. |
- Returns:
- The number of bytes of G.722 data produced.
References vec_circular_dot_prodi16().
g722_encode_state_t* g722_encode_init |
( |
g722_encode_state_t * |
s, |
|
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int |
rate, |
|
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int |
options | |
|
) |
| | |
Initialise an G.722 encode context.
- Parameters:
-
| s | The G.722 encode context. |
| rate | The required bit rate for the G.722 data. The valid rates are 64000, 56000 and 48000. |
| options | |
- Returns:
- A pointer to the G.722 encode context, or NULL for error.