28d54ab18f
Review URL: https://webrtc-codereview.appspot.com/1324006 git-svn-id: http://webrtc.googlecode.com/svn/trunk@3883 4adac7df-926f-26a2-2b94-8c16560cd09d
70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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/*
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* The main NetEQ instance, which is where the DSP and MCU sides join.
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*/
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#ifndef MCU_DSP_COMMON_H
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#define MCU_DSP_COMMON_H
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#include "typedefs.h"
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#include "dsp.h"
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#include "mcu.h"
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/* Define size of shared memory area. */
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#if defined(NETEQ_48KHZ_WIDEBAND)
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#define SHARED_MEM_SIZE (6*640)
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#elif defined(NETEQ_32KHZ_WIDEBAND)
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#define SHARED_MEM_SIZE (4*640)
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#elif defined(NETEQ_WIDEBAND)
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#define SHARED_MEM_SIZE (2*640)
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#else
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#define SHARED_MEM_SIZE 640
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#endif
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#define SYNC_PAYLOAD_LEN_BYTES 7
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static const uint8_t kSyncPayload[SYNC_PAYLOAD_LEN_BYTES] = {
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'a', 'v', 's', 'y', 'n', 'c', '\0' };
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/* Struct to hold the NetEQ instance */
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typedef struct
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{
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DSPInst_t DSPinst; /* DSP part of the NetEQ instance */
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MCUInst_t MCUinst; /* MCU part of the NetEQ instance */
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int16_t ErrorCode; /* Store last error code */
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#ifdef NETEQ_STEREO
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int16_t masterSlave; /* 0 = not set, 1 = master, 2 = slave */
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#endif /* NETEQ_STEREO */
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} MainInst_t;
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/* Struct used for communication between DSP and MCU sides of NetEQ */
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typedef struct
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{
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uint32_t playedOutTS; /* Timestamp position at end of DSP data */
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uint16_t samplesLeft; /* Number of samples stored */
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int16_t MD; /* Multiple description codec information */
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int16_t lastMode; /* Latest mode of NetEQ playout */
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int16_t frameLen; /* Frame length of previously decoded packet */
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} DSP2MCU_info_t;
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/* Initialize instances with read and write address */
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int WebRtcNetEQ_DSPinit(MainInst_t *inst);
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/* The DSP side will call this function to interrupt the MCU side */
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int WebRtcNetEQ_DSP2MCUinterrupt(MainInst_t *inst, int16_t *pw16_shared_mem);
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/* Returns 1 if the given payload matches |kSyncPayload| payload, otherwise
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* 0 is returned. */
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int WebRtcNetEQ_IsSyncPayload(const void* payload, int payload_len_bytes);
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#endif
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