lvfulong
145 lines
4.0 KiB
C++
145 lines
4.0 KiB
C++
/**
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@file JCOggParser.cpp
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@brief
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@author James
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@version 1.0
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@date 2014_11_26
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*/
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//包含头文件
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#include "JCOggParser.h"
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#include "../../util/Log.h"
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#include <vorbis/vorbisfile.h>
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#include <ogg/ogg.h>
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#include <vector>
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#pragma warning (disable: 4996)
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namespace laya
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{
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#define READ_OGG_BUFFER_TEMP_SIZE 44100 //读取ogg的时候，临时缓冲区大小
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//------------------------------------------------------------------------------
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JCOggParser* JCOggParser::ms_pOggParser = NULL;
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//------------------------------------------------------------------------------
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JCOggParser::JCOggParser()
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{
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m_nBufferSize = READ_OGG_BUFFER_TEMP_SIZE;
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m_nCurBufferPos = 0;
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m_pBuffer = new char[m_nBufferSize];
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}
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//------------------------------------------------------------------------------
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JCOggParser::~JCOggParser()
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{
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if( m_pBuffer != NULL )
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{
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delete[] m_pBuffer;
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m_pBuffer = NULL;
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}
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}
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//------------------------------------------------------------------------------
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JCOggParser* JCOggParser::GetInstance( void )
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{
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if( ms_pOggParser == NULL )
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{
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ms_pOggParser = new JCOggParser();
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}
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return ms_pOggParser;
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}
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//-----------------------------------------------------------------------------
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void JCOggParser::DelInstance( void )
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{
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}
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//-----------------------------------------------------------------------------
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bool JCOggParser::copyBuffer( char* p_pBuffer,int p_nSize )
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{
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if( p_pBuffer == NULL || p_nSize <=0 ) return false;
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if( m_nCurBufferPos + p_nSize > m_nBufferSize )
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{
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int nElargeSize = (p_nSize<=READ_OGG_BUFFER_TEMP_SIZE) ? READ_OGG_BUFFER_TEMP_SIZE : p_nSize;
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char* pNewBuffer = new char[m_nBufferSize + nElargeSize];
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memcpy( pNewBuffer,m_pBuffer,m_nBufferSize );
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m_nBufferSize += nElargeSize;
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delete m_pBuffer;
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m_pBuffer = pNewBuffer;
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}
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memcpy( m_pBuffer+m_nCurBufferPos,p_pBuffer,p_nSize );
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m_nCurBufferPos += p_nSize;
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return true;
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}
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//------------------------------------------------------------------------------
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JCWaveInfo* JCOggParser::GetWaveInfo( const char* p_sFileName,unsigned char* p_sBuffer, int p_nBufferSize )
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{
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m_nCurBufferPos = 0;
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OggVorbis_File pOggStream;
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vorbis_info* pVorbisInfo = NULL;
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int nResult = -1;
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if( p_sBuffer != NULL && p_nBufferSize > 0 )
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{
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nResult = ov_open_callbacks( NULL, &pOggStream, (const char*)p_sBuffer, p_nBufferSize, OV_CALLBACKS_DEFAULT );
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}
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else if( p_sFileName != NULL )
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{
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FILE* fp = NULL;
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fp = fopen( p_sFileName, "rb" );
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if( fp )
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{
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nResult = ov_open_callbacks( (void*)fp, &pOggStream, NULL, 0, OV_CALLBACKS_DEFAULT );
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}
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fclose( fp );
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}
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if( nResult >= 0 )
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{
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pVorbisInfo = ov_info( &pOggStream, -1 );
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char pBufferData[ READ_OGG_BUFFER_TEMP_SIZE ];//解码时候的缓冲区
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int nSize = 0;
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int nPortion = 0;
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int nResult1 = 0;
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while( true )
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{
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nResult1 = ov_read( &pOggStream, pBufferData, sizeof(pBufferData), 0, 2, 1, &nPortion );
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if( nResult1 > 0 )
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{
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nSize += nResult1;
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copyBuffer( pBufferData,nResult1 );
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}
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else if( nResult1 == 0 )
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{
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break;
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}
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else
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{
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LOGE("JCOggParser::GetWaveInfo error 1");
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return NULL;
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}
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}
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if( nSize == 0)
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{
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LOGE("JCOggParser::GetWaveInfo error 2");
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return NULL;
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}
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JCWaveInfo* pWaveInfo = new JCWaveInfo();
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pWaveInfo->m_nRealDataSize = nSize;
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pWaveInfo->m_pData = new unsigned char[nSize];
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if( nSize == m_nCurBufferPos )
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{
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memcpy( pWaveInfo->m_pData,m_pBuffer,nSize*sizeof(char));
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}
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else
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{
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LOGE("JCOggParser::GetWaveInfo error 3");
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return NULL;
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}
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pWaveInfo->m_kFmtBlock.wavFormat.dwSamplesPerSec = pVorbisInfo->rate;
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pWaveInfo->m_kFmtBlock.wavFormat.wChannels = pVorbisInfo->channels;
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//TODO 没有找到ogg的这个参数，似乎目前只支持16bit
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pWaveInfo->m_kFmtBlock.wavFormat.wBitsPerSample = 16;
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ov_clear(&pOggStream);
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return pWaveInfo;
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}
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LOGE("JCOggParser::GetWaveInfo error 0");
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return NULL;
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}
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//------------------------------------------------------------------------------
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}
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//-----------------------------END FILE--------------------------------
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