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