mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-23 19:20:53 +08:00
128 lines
3.4 KiB
C++
128 lines
3.4 KiB
C++
/*
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* MIT License
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*
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* Copyright (c) 2016 xiongziliang <771730766@qq.com>
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*
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* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifdef ENABLE_FAAC
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#include <cstdlib>
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#include "AACEncoder.h"
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#include "Util/logger.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <faac.h>
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#ifdef __cplusplus
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}
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#endif
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using namespace toolkit;
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namespace mediakit {
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AACEncoder::AACEncoder() {
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}
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AACEncoder::~AACEncoder() {
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if (_hEncoder != nullptr) {
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faacEncClose(_hEncoder);
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_hEncoder = nullptr;
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}
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if (_pucAacBuf != nullptr) {
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delete[] _pucAacBuf;
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_pucAacBuf = nullptr;
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}
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if (_pucPcmBuf != nullptr) {
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delete[] _pucPcmBuf;
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_pucPcmBuf = nullptr;
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}
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}
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bool AACEncoder::init(int iSampleRate, int iChannels, int iSampleBit) {
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if (iSampleBit != 16) {
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return false;
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}
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// (1) Open FAAC engine
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_hEncoder = faacEncOpen(iSampleRate, iChannels, &_ulInputSamples,
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&_ulMaxOutputBytes);
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if (_hEncoder == NULL) {
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return false;
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}
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_pucAacBuf = new unsigned char[_ulMaxOutputBytes];
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_ulMaxInputBytes = _ulInputSamples * iSampleBit / 8;
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_pucPcmBuf = new unsigned char[_ulMaxInputBytes * 4];
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// (2.1) Get current encoding configuration
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faacEncConfigurationPtr pConfiguration = faacEncGetCurrentConfiguration(_hEncoder);
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if (pConfiguration == NULL) {
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faacEncClose(_hEncoder);
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return false;
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}
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pConfiguration->aacObjectType =LOW;
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pConfiguration->mpegVersion = 4;
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pConfiguration->useTns = 1;
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pConfiguration->shortctl = SHORTCTL_NORMAL;
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pConfiguration->useLfe = 1;
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pConfiguration->allowMidside = 1;
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pConfiguration->bitRate = 0;
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pConfiguration->bandWidth = 0;
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pConfiguration->quantqual = 50;
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pConfiguration->outputFormat = 1;
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pConfiguration->inputFormat = FAAC_INPUT_16BIT;
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// (2.2) Set encoding configuration
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if(!faacEncSetConfiguration(_hEncoder, pConfiguration)){
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ErrorL << "faacEncSetConfiguration failed";
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faacEncClose(_hEncoder);
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return false;
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}
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return true;
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}
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int AACEncoder::inputData(char *pcPcmBufr, int iLen, unsigned char **ppucOutBuffer) {
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memcpy(_pucPcmBuf + _uiPcmLen, pcPcmBufr, iLen);
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_uiPcmLen += iLen;
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if (_uiPcmLen < _ulMaxInputBytes) {
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return 0;
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}
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int nRet = faacEncEncode(_hEncoder, (int32_t *) (_pucPcmBuf), _ulInputSamples, _pucAacBuf, _ulMaxOutputBytes);
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_uiPcmLen -= _ulMaxInputBytes;
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memmove(_pucPcmBuf, _pucPcmBuf + _ulMaxInputBytes, _uiPcmLen);
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*ppucOutBuffer = _pucAacBuf;
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return nRet;
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}
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} /* namespace mediakit */
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#endif //ENABLE_FAAC
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