481 lines
10 KiB
C++
481 lines
10 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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#include "acm_common_defs.h"
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#include "acm_neteq.h"
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#include "acm_opus.h"
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#include "trace.h"
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#include "webrtc_neteq.h"
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#include "webrtc_neteq_help_macros.h"
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#ifdef WEBRTC_CODEC_OPUS
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// NOTE! Opus is not included in the open-source package. Modify this file or your codec
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// API to match the function call and name of used Opus API file.
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// #include "opus_interface.h"
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#endif
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namespace webrtc
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{
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#ifndef WEBRTC_CODEC_OPUS
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ACMOPUS::ACMOPUS(
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WebRtc_Word16 /* codecID */)
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{
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return;
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}
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ACMOPUS::~ACMOPUS()
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{
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return;
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}
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WebRtc_Word16
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ACMOPUS::InternalEncode(
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WebRtc_UWord8* /* bitStream */,
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WebRtc_Word16* /* bitStreamLenByte */)
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{
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return -1;
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}
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WebRtc_Word16
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ACMOPUS::DecodeSafe(
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WebRtc_UWord8* /* bitStream */,
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WebRtc_Word16 /* bitStreamLenByte */,
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WebRtc_Word16* /* audio */,
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WebRtc_Word16* /* audioSamples */,
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WebRtc_Word8* /* speechType */)
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{
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return -1;
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}
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WebRtc_Word16
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ACMOPUS::InternalInitEncoder(
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WebRtcACMCodecParams* /* codecParams */)
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{
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return -1;
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}
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WebRtc_Word16
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ACMOPUS::InternalInitDecoder(
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WebRtcACMCodecParams* /* codecParams */)
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{
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return -1;
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}
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WebRtc_Word32
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ACMOPUS::CodecDef(
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WebRtcNetEQ_CodecDef& /* codecDef */,
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const CodecInst& /* codecInst */)
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{
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return -1;
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}
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ACMGenericCodec*
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ACMOPUS::CreateInstance(void)
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{
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return NULL;
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}
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WebRtc_Word16
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ACMOPUS::InternalCreateEncoder()
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{
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return -1;
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}
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void
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ACMOPUS::DestructEncoderSafe()
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{
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return;
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}
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WebRtc_Word16
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ACMOPUS::InternalCreateDecoder()
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{
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return -1;
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}
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void
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ACMOPUS::DestructDecoderSafe()
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{
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return;
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}
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void
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ACMOPUS::InternalDestructEncoderInst(
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void* /* ptrInst */)
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{
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return;
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}
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WebRtc_Word16
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ACMOPUS::UnregisterFromNetEqSafe(
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ACMNetEQ* /* netEq */,
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WebRtc_Word16 /* payloadType */)
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{
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return -1;
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}
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WebRtc_Word16
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ACMOPUS::SetBitRateSafe(
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const WebRtc_Word32 /*rate*/ )
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{
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return -1;
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}
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#else //===================== Actual Implementation =======================
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// Remove when integrating a real Opus wrapper
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extern WebRtc_Word16 WebRtcOpus_CreateEnc(OPUS_inst_t_** inst, WebRtc_Word16 samplFreq);
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extern WebRtc_Word16 WebRtcOpus_CreateDec(OPUS_inst_t_** inst, WebRtc_Word16 samplFreq);
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extern WebRtc_Word16 WebRtcOpus_FreeEnc(OPUS_inst_t_* inst);
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extern WebRtc_Word16 WebRtcOpus_FreeDec(OPUS_inst_t_* inst);
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extern WebRtc_Word16 WebRtcOpus_Encode(OPUS_inst_t_* encInst,
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WebRtc_Word16* input,
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WebRtc_Word16* output,
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WebRtc_Word16 len,
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WebRtc_Word16 byteLen);
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extern WebRtc_Word16 WebRtcOpus_EncoderInit(OPUS_inst_t_* encInst,
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WebRtc_Word16 samplFreq,
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WebRtc_Word16 mode,
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WebRtc_Word16 vbrFlag);
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extern WebRtc_Word16 WebRtcOpus_Decode(OPUS_inst_t_* decInst);
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extern WebRtc_Word16 WebRtcOpus_DecodeBwe(OPUS_inst_t_* decInst, WebRtc_Word16* input);
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extern WebRtc_Word16 WebRtcOpus_DecodePlc(OPUS_inst_t_* decInst);
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extern WebRtc_Word16 WebRtcOpus_DecoderInit(OPUS_inst_t_* decInst);
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ACMOPUS::ACMOPUS(
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WebRtc_Word16 codecID):
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_encoderInstPtr(NULL),
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_decoderInstPtr(NULL),
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_opusMode(1), // default mode is the hybrid mode
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_flagVBR(0) // default VBR off
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{
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_codecID = codecID;
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// Current implementation doesn't have DTX. That might change.
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_hasInternalDTX = false;
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// Default sampling frequency
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_mySampFreq = 48000;
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// default rate
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_myRate = 50000;
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return;
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}
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ACMOPUS::~ACMOPUS()
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{
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if(_encoderInstPtr != NULL)
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{
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WebRtcOpus_FreeEnc(_encoderInstPtr);
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_encoderInstPtr = NULL;
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}
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if(_decoderInstPtr != NULL)
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{
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WebRtcOpus_FreeDec(_decoderInstPtr);
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_decoderInstPtr = NULL;
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}
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return;
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}
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WebRtc_Word16
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ACMOPUS::InternalEncode(
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WebRtc_UWord8* bitStream,
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WebRtc_Word16* bitStreamLenByte)
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{
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WebRtc_Word16 noEncodedSamples = 0;
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WebRtc_Word16 tmpLenByte = 0;
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*bitStreamLenByte = 0;
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WebRtc_Word16 byteLengthFrame = 0;
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// Derive what byte-length is requested
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byteLengthFrame = _myRate*_frameLenSmpl/(8*_mySampFreq);
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// Call Encoder
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*bitStreamLenByte = WebRtcOpus_Encode(_encoderInstPtr, &_inAudio[_inAudioIxRead],
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(WebRtc_Word16*)bitStream, _frameLenSmpl, byteLengthFrame);
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// increment the read index this tell the caller that how far
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// we have gone forward in reading the audio buffer
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_inAudioIxRead += _frameLenSmpl;
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// sanity check
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if(*bitStreamLenByte < 0)
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{
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// error has happened
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WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID,
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"InternalEncode: Encode error for Opus");
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*bitStreamLenByte = 0;
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return -1;
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}
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return *bitStreamLenByte;
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}
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WebRtc_Word16
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ACMOPUS::DecodeSafe(
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WebRtc_UWord8* /* bitStream */,
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WebRtc_Word16 /* bitStreamLenByte */,
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WebRtc_Word16* /* audio */,
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WebRtc_Word16* /* audioSamples */,
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WebRtc_Word8* /* speechType */)
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{
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return 0;
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}
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WebRtc_Word16
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ACMOPUS::InternalInitEncoder(
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WebRtcACMCodecParams* codecParams)
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{
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//set the bit rate and initialize
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_myRate = codecParams->codecInstant.rate;
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return SetBitRateSafe( (WebRtc_UWord32)_myRate);
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}
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WebRtc_Word16
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ACMOPUS::InternalInitDecoder(
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WebRtcACMCodecParams* /* codecParams */)
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{
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if (WebRtcOpus_DecoderInit(_decoderInstPtr) < 0)
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{
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WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID,
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"InternalInitDecoder: init decoder failed for Opus");
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return -1;
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}
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return 0;
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}
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WebRtc_Word32
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ACMOPUS::CodecDef(
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WebRtcNetEQ_CodecDef& codecDef,
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const CodecInst& codecInst)
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{
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if (!_decoderInitialized)
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{
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WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID,
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"CodeDef: Decoder uninitialized for Opus");
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return -1;
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}
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// Fill up the structure by calling
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// "SET_CODEC_PAR" & "SET_G729_FUNCTION."
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// Then call NetEQ to add the codec to it's
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// database.
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SET_CODEC_PAR((codecDef), kDecoderOpus, codecInst.pltype,
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_decoderInstPtr, 16000);
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SET_OPUS_FUNCTIONS((codecDef));
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return 0;
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}
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ACMGenericCodec*
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ACMOPUS::CreateInstance(void)
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{
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return NULL;
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}
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WebRtc_Word16
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ACMOPUS::InternalCreateEncoder()
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{
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if (WebRtcOpus_CreateEnc(&_encoderInstPtr, _mySampFreq) < 0)
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{
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WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID,
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"InternalCreateEncoder: create encoder failed for Opus");
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return -1;
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}
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return 0;
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}
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void
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ACMOPUS::DestructEncoderSafe()
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{
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_encoderExist = false;
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_encoderInitialized = false;
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if(_encoderInstPtr != NULL)
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{
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WebRtcOpus_FreeEnc(_encoderInstPtr);
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_encoderInstPtr = NULL;
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}
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}
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WebRtc_Word16
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ACMOPUS::InternalCreateDecoder()
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{
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if (WebRtcOpus_CreateDec(&_decoderInstPtr, _mySampFreq) < 0)
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{
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WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID,
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"InternalCreateDecoder: create decoder failed for Opus");
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return -1;
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}
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return 0;
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}
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void
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ACMOPUS::DestructDecoderSafe()
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{
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_decoderExist = false;
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_decoderInitialized = false;
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if(_decoderInstPtr != NULL)
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{
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WebRtcOpus_FreeDec(_decoderInstPtr);
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_decoderInstPtr = NULL;
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}
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}
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void
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ACMOPUS::InternalDestructEncoderInst(
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void* ptrInst)
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{
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if(ptrInst != NULL)
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{
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WebRtcOpus_FreeEnc((OPUS_inst_t*)ptrInst);
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}
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return;
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}
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WebRtc_Word16
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ACMOPUS::UnregisterFromNetEqSafe(
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ACMNetEQ* netEq,
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WebRtc_Word16 payloadType)
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{
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if(payloadType != _decoderParams.codecInstant.pltype)
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{
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WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID,
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"Cannot unregister codec: given payload-type does not match \
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the stored payload type",
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_decoderParams.codecInstant.plname,
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payloadType,
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_decoderParams.codecInstant.pltype);
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return -1;
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}
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return netEq->RemoveCodec(kDecoderOpus);
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}
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WebRtc_Word16
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ACMOPUS::SetBitRateSafe(
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const WebRtc_Word32 rate)
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{
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//allowed rates: {8000, 12000, 14000, 16000, 18000, 20000,
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// 22000, 24000, 26000, 28000, 30000, 32000};
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switch(rate)
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{
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case 8000:
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{
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_myRate = 8000;
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break;
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}
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case 12000:
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{
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_myRate = 12000;
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break;
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}
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case 14000:
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{
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_myRate = 14000;
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break;
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}
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case 16000:
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{
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_myRate = 16000;
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break;
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}
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case 18000:
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{
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_myRate = 18000;
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break;
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}
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case 20000:
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{
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_myRate = 20000;
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break;
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}
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case 22000:
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{
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_myRate = 22000;
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break;
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}
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case 24000:
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{
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_myRate = 24000;
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break;
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}
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case 26000:
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{
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_myRate = 26000;
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break;
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}
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case 28000:
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{
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_myRate = 28000;
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break;
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}
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case 30000:
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{
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_myRate = 30000;
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break;
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}
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case 32000:
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{
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_myRate = 32000;
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break;
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}
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default:
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{
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WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID,
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"SetBitRateSafe: Invalid rate Opus");
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return -1;
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break;
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}
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}
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// Re-init with new rate
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if (WebRtcOpus_EncoderInit(_encoderInstPtr, _mySampFreq, _opusMode, _flagVBR) >= 0)
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{
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_encoderParams.codecInstant.rate = _myRate;
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return 0;
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}
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else
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{
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return -1;
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}
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}
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#endif
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} // namespace webrtc
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