mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
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110 lines
2.4 KiB
C++
110 lines
2.4 KiB
C++
/*
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* AACEncoder.cpp
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*
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* Created on: 2016年8月11日
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* Author: xzl
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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 ZL::Util;
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namespace ZL {
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namespace Codec {
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AACEncoder::AACEncoder() {
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}
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AACEncoder::~AACEncoder() {
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if (m_hEncoder != nullptr) {
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faacEncClose(m_hEncoder);
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m_hEncoder = nullptr;
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}
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if (m_pucAacBuf != nullptr) {
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delete[] m_pucAacBuf;
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m_pucAacBuf = nullptr;
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}
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if (m_pucPcmBuf != nullptr) {
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delete[] m_pucPcmBuf;
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m_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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m_hEncoder = faacEncOpen(iSampleRate, iChannels, &m_ulInputSamples,
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&m_ulMaxOutputBytes);
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if (m_hEncoder == NULL) {
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return false;
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}
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m_pucAacBuf = new unsigned char[m_ulMaxOutputBytes];
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m_ulMaxInputBytes = m_ulInputSamples * iSampleBit / 8;
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m_pucPcmBuf = new unsigned char[m_ulMaxInputBytes * 4];
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// (2.1) Get current encoding configuration
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faacEncConfigurationPtr pConfiguration = faacEncGetCurrentConfiguration(m_hEncoder);
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if (pConfiguration == NULL) {
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faacEncClose(m_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(m_hEncoder, pConfiguration)){
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ErrorL << "faacEncSetConfiguration failed";
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faacEncClose(m_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(m_pucPcmBuf + m_uiPcmLen, pcPcmBufr, iLen);
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m_uiPcmLen += iLen;
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if (m_uiPcmLen < m_ulMaxInputBytes) {
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return 0;
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}
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int nRet = faacEncEncode(m_hEncoder, (int32_t *) (m_pucPcmBuf), m_ulInputSamples, m_pucAacBuf, m_ulMaxOutputBytes);
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m_uiPcmLen -= m_ulMaxInputBytes;
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memmove(m_pucPcmBuf, m_pucPcmBuf + m_ulMaxInputBytes, m_uiPcmLen);
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*ppucOutBuffer = m_pucAacBuf;
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return nRet;
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}
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} /* namespace Codec */
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} /* namespace ZL */
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#endif //ENABLE_FAAC
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