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/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* MCU struct and functions related to the MCU side operations.
*/
#ifndef MCU_H
#define MCU_H
#include "typedefs.h"
#include "codec_db.h"
#include "rtcp.h"
#include "packet_buffer.h"
#include "buffer_stats.h"
#include "neteq_statistics.h"
#ifdef NETEQ_ATEVENT_DECODE
#include "dtmf_buffer.h"
#endif
#define MAX_ONE_DESC 5 /* cannot do more than this many consecutive one-descriptor decodings */
#define MAX_LOSS_REPORT_PERIOD 60 /* number of seconds between auto-reset */
enum TsScaling
{
kTSnoScaling = 0,
kTSscalingTwo,
kTSscalingTwoThirds,
kTSscalingFourThirds
};
enum { kLenWaitingTimes = 100 };
typedef struct
{
int16_t current_Codec;
int16_t current_Payload;
uint32_t timeStamp; /* Next timestamp that should be played */
int16_t millisecondsPerCall;
uint16_t timestampsPerCall; /* Output chunk size */
uint16_t fs;
uint32_t ssrc; /* Current ssrc */
int16_t new_codec;
int16_t first_packet;
/* MCU/DSP Communication layer */
int16_t *pw16_readAddress;
int16_t *pw16_writeAddress;
void *main_inst;
CodecDbInst_t codec_DB_inst; /* Information about all the codecs, i.e. which
functions to use and which codpoints that
have been assigned */
SplitInfo_t PayloadSplit_inst; /* Information about how the current codec
payload should be splitted */
WebRtcNetEQ_RTCP_t RTCP_inst; /* RTCP statistics */
PacketBuf_t PacketBuffer_inst; /* The packet buffer */
BufstatsInst_t BufferStat_inst; /* Statistics that are used to make decision
for what the DSP should perform */
#ifdef NETEQ_ATEVENT_DECODE
dtmf_inst_t DTMF_inst;
#endif
int NoOfExpandCalls;
int16_t AVT_PlayoutOn;
enum WebRtcNetEQPlayoutMode NetEqPlayoutMode;
int16_t one_desc; /* Number of times running on one desc */
uint32_t lostTS; /* Number of timestamps lost */
uint32_t lastReportTS; /* Timestamp elapsed since last report was given */
int waiting_times[kLenWaitingTimes]; /* Waiting time statistics storage. */
int len_waiting_times;
int next_waiting_time_index;
uint32_t externalTS;
uint32_t internalTS;
int16_t TSscalingInitialized;
enum TsScaling scalingFactor;
/* AV-sync enabled. In AV-sync NetEq screens packets for specific sync
* packets. Sync packets are not decoded by a decoder but generate all-zero
* signal with the same number of samples as previously decoded payload.
* Also in AV-sync mode the sample-size of a sync payload is reported as
* previous frame-size. */
int av_sync;
#ifdef NETEQ_STEREO
int usingStereo;
#endif
/* The sequence number of the latest decoded RTP payload. */
int decoded_packet_sequence_number;
uint32_t decoded_packet_timestamp;
} MCUInst_t;
/****************************************************************************
* WebRtcNetEQ_McuReset(...)
*
* Reset the MCU instance.
*
* Input:
* - inst : MCU instance
*
* Return value : 0 - Ok
* <0 - Error
*/
int WebRtcNetEQ_McuReset(MCUInst_t *inst);
/****************************************************************************
* WebRtcNetEQ_ResetMcuInCallStats(...)
*
* Reset MCU-side statistics variables for the in-call statistics.
*
* Input:
* - inst : MCU instance
*
* Return value : 0 - Ok
* <0 - Error
*/
int WebRtcNetEQ_ResetMcuInCallStats(MCUInst_t *inst);
/****************************************************************************
* WebRtcNetEQ_ResetWaitingTimeStats(...)
*
* Reset waiting-time statistics.
*
* Input:
* - inst : MCU instance.
*
* Return value : n/a
*/
void WebRtcNetEQ_ResetWaitingTimeStats(MCUInst_t *inst);
/****************************************************************************
* WebRtcNetEQ_LogWaitingTime(...)
*
* Log waiting-time to the statistics.
*
* Input:
* - inst : MCU instance.
* - waiting_time : Waiting time in "RecOut calls" (i.e., 1 call = 10 ms).
*
* Return value : n/a
*/
void WebRtcNetEQ_StoreWaitingTime(MCUInst_t *inst, int waiting_time);
/****************************************************************************
* WebRtcNetEQ_ResetMcuJitterStat(...)
*
* Reset MCU-side statistics variables for the post-call statistics.
*
* Input:
* - inst : MCU instance
*
* Return value : 0 - Ok
* <0 - Error
*/
int WebRtcNetEQ_ResetMcuJitterStat(MCUInst_t *inst);
/****************************************************************************
* WebRtcNetEQ_McuAddressInit(...)
*
* Initializes MCU with read address and write address.
*
* Input:
* - inst : MCU instance
* - Data2McuAddress : Pointer to MCU address
* - Data2DspAddress : Pointer to DSP address
* - main_inst : Pointer to NetEQ main instance
*
* Return value : 0 - Ok
* <0 - Error
*/
int WebRtcNetEQ_McuAddressInit(MCUInst_t *inst, void * Data2McuAddress,
void * Data2DspAddress, void *main_inst);
/****************************************************************************
* WebRtcNetEQ_McuSetFs(...)
*
* Initializes MCU with read address and write address.
*
* Input:
* - inst : MCU instance
* - fs_hz : Sample rate in Hz -- 8000, 16000, 32000, (48000)
*
* Return value : 0 - Ok
* <0 - Error
*/
int WebRtcNetEQ_McuSetFs(MCUInst_t *inst, uint16_t fs_hz);
/****************************************************************************
* WebRtcNetEQ_SignalMcu(...)
*
* Signal the MCU that data is available and ask for a RecOut decision.
*
* Input:
* - inst : MCU instance
* - av_sync : 1 if NetEQ is in AV-sync mode, otherwise 0.
*
* Return value : 0 - Ok
* <0 - Error
*/
int WebRtcNetEQ_SignalMcu(MCUInst_t *inst);
/****************************************************************************
* WebRtcNetEQ_RecInInternal(...)
*
* This function inserts a packet into the jitter buffer.
*
* Input:
* - MCU_inst : MCU instance
* - RTPpacket : The RTP packet, parsed into NetEQ's internal RTP struct
* - uw32_timeRec : Time stamp for the arrival of the packet (not RTP timestamp)
*
* Return value : 0 - Ok
* -1 - Error
*/
int WebRtcNetEQ_RecInInternal(MCUInst_t *MCU_inst, RTPPacket_t *RTPpacket,
uint32_t uw32_timeRec);
/****************************************************************************
* WebRtcNetEQ_RecInInternal(...)
*
* Split the packet according to split_inst and inserts the parts into
* Buffer_inst.
*
* Input:
* - MCU_inst : MCU instance
* - RTPpacket : The RTP packet, parsed into NetEQ's internal RTP struct
* - uw32_timeRec : Time stamp for the arrival of the packet (not RTP timestamp)
* - av_sync : indicates if AV-sync is enabled, 1 enabled,
* 0 disabled.
*
* Return value : 0 - Ok
* -1 - Error
*/
int WebRtcNetEQ_SplitAndInsertPayload(RTPPacket_t* packet,
PacketBuf_t* Buffer_inst,
SplitInfo_t* split_inst,
int16_t* flushed,
int av_sync);
/****************************************************************************
* WebRtcNetEQ_GetTimestampScaling(...)
*
* Update information about timestamp scaling for a payload type
* in MCU_inst->scalingFactor.
*
* Input:
* - MCU_inst : MCU instance
* - rtpPayloadType : RTP payload number
*
* Return value : 0 - Ok
* -1 - Error
*/
int WebRtcNetEQ_GetTimestampScaling(MCUInst_t *MCU_inst, int rtpPayloadType);
/****************************************************************************
* WebRtcNetEQ_ScaleTimestampExternalToInternal(...)
*
* Convert from external to internal timestamp using current scaling info.
*
* Input:
* - MCU_inst : MCU instance
* - externalTS : External timestamp
*
* Return value : Internal timestamp
*/
uint32_t WebRtcNetEQ_ScaleTimestampExternalToInternal(const MCUInst_t *MCU_inst,
uint32_t externalTS);
/****************************************************************************
* WebRtcNetEQ_ScaleTimestampInternalToExternal(...)
*
* Convert from external to internal timestamp using current scaling info.
*
* Input:
* - MCU_inst : MCU instance
* - externalTS : Internal timestamp
*
* Return value : External timestamp
*/
uint32_t WebRtcNetEQ_ScaleTimestampInternalToExternal(const MCUInst_t *MCU_inst,
uint32_t internalTS);
#endif
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