55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
|
/* Copyright (C) 2002 Jean-Marc Valin */
|
||
|
|
/**
|
||
|
|
@file speex_jitter_buffer.h
|
||
|
|
@brief Adaptive jitter buffer for Speex packets only
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <speex/speex_jitter.h>
|
||
|
|
#include <speex/speex.h>
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/** @defgroup SpeexJitter SpeexJitter: Adaptive jitter buffer specifically for Speex
|
||
|
|
* This is the jitter buffer that reorders UDP/RTP packets and adjusts the buffer size
|
||
|
|
* to maintain good quality and low latency. This is a simplified version that works only
|
||
|
|
* with Speex, but is much easier to use.
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
/** Speex jitter-buffer state. Never use it directly! */
|
||
|
|
typedef struct SpeexJitter {
|
||
|
|
SpeexBits current_packet; /**< Current Speex packet */
|
||
|
|
int valid_bits; /**< True if Speex bits are valid */
|
||
|
|
JitterBuffer *packets; /**< Generic jitter buffer state */
|
||
|
|
void *dec; /**< Pointer to Speex decoder */
|
||
|
|
spx_int32_t frame_size; /**< Frame size of Speex decoder */
|
||
|
|
} SpeexJitter;
|
||
|
|
|
||
|
|
/** Initialise jitter buffer
|
||
|
|
*
|
||
|
|
* @param jitter State of the Speex jitter buffer
|
||
|
|
* @param decoder Speex decoder to call
|
||
|
|
* @param sampling_rate Sampling rate used by the decoder
|
||
|
|
*/
|
||
|
|
void speex_jitter_init(SpeexJitter *jitter, void *decoder, int sampling_rate);
|
||
|
|
|
||
|
|
/** Destroy jitter buffer */
|
||
|
|
void speex_jitter_destroy(SpeexJitter *jitter);
|
||
|
|
|
||
|
|
/** Put one packet into the jitter buffer */
|
||
|
|
void speex_jitter_put(SpeexJitter *jitter, char *packet, int len, int timestamp);
|
||
|
|
|
||
|
|
/** Get one packet from the jitter buffer */
|
||
|
|
void speex_jitter_get(SpeexJitter *jitter, spx_int16_t *out, int *start_offset);
|
||
|
|
|
||
|
|
/** Get pointer timestamp of jitter buffer */
|
||
|
|
int speex_jitter_get_pointer_timestamp(SpeexJitter *jitter);
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* @} */
|