| spandsp 0.0.6
    | 
#include <stdio.h>#include <inttypes.h>#include <stdlib.h>#include <string.h>#include "floating_fudge.h"#include <limits.h>#include "spandsp/telephony.h"#include "spandsp/fast_convert.h"#include "spandsp/saturated.h"#include "spandsp/plc.h"| Macros | |
| #define | ATTENUATION_INCREMENT 0.0025f /* Attenuation per sample */ | 
| Functions | |
| int | plc_rx (plc_state_t *s, int16_t amp[], int len) | 
| Process a block of received audio samples for PLC. | |
| int | plc_fillin (plc_state_t *s, int16_t amp[], int len) | 
| Fill-in a block of missing audio samples. | |
| plc_state_t * | plc_init (plc_state_t *s) | 
| Initialise a PLC context. | |
| int | plc_release (plc_state_t *s) | 
| int | plc_free (plc_state_t *s) | 
| int plc_fillin | ( | plc_state_t * | s, | 
| int16_t | amp[], | ||
| int | len | ||
| ) | 
Fill-in a block of missing audio samples.
Fill-in a block of missing audio samples.
| s | The packet loss concealer context. | 
| amp | The audio sample buffer. | 
| len | The number of samples to be synthesised. | 
References CORRELATION_SPAN, plc_state_t::history, plc_state_t::missing_samples, plc_state_t::pitch, plc_state_t::pitch_offset, plc_state_t::pitchbuf, PLC_HISTORY_LEN, PLC_PITCH_MAX, and PLC_PITCH_MIN.
| int plc_free | ( | plc_state_t * | s | ) | 
Free a packet loss concealer context.
| s | The packet loss concealer context. | 
| plc_state_t * plc_init | ( | plc_state_t * | s | ) | 
Initialise a PLC context.
Initialise a packet loss concealer context.
| s | The packet loss concealer context. | 
| int plc_release | ( | plc_state_t * | s | ) | 
Release a packet loss concealer context.
| s | The packet loss concealer context. | 
| int plc_rx | ( | plc_state_t * | s, | 
| int16_t | amp[], | ||
| int | len | ||
| ) | 
Process a block of received audio samples for PLC.
Process a block of received audio samples for PLC.
| s | The packet loss concealer context. | 
| amp | The audio sample buffer. | 
| len | The number of samples in the buffer. | 
References plc_state_t::missing_samples, plc_state_t::pitch, plc_state_t::pitch_offset, and plc_state_t::pitchbuf.