open source

2020-11-11 16:17:13 +08:00
parent 4d989f3ecb
commit bc4ca748de
2441 changed files with 623057 additions and 2 deletions
@@ -0,0 +1,144 @@
+/**
+@file			JCOggParser.cpp
+@brief			
+@author			James
+@version		1.0
+@date			2014_11_26
+*/
+
+//包含头文件
+#include "JCOggParser.h"
+#include "../../util/Log.h"
+#include <vorbis/vorbisfile.h>
+#include <ogg/ogg.h>
+#include <vector>
+#pragma warning (disable: 4996)
+
+namespace laya
+{
+#define READ_OGG_BUFFER_TEMP_SIZE 44100	//读取ogg的时候，临时缓冲区大小
+//------------------------------------------------------------------------------
+JCOggParser* JCOggParser::ms_pOggParser = NULL;
+//------------------------------------------------------------------------------
+JCOggParser::JCOggParser()
+{
+	m_nBufferSize = READ_OGG_BUFFER_TEMP_SIZE;
+	m_nCurBufferPos = 0;
+	m_pBuffer = new char[m_nBufferSize];
+}
+//------------------------------------------------------------------------------
+JCOggParser::~JCOggParser()
+{
+	if( m_pBuffer != NULL )
+	{
+		delete[] m_pBuffer;
+		m_pBuffer = NULL;
+	}
+}
+//------------------------------------------------------------------------------
+JCOggParser* JCOggParser::GetInstance( void )
+{
+	if( ms_pOggParser == NULL )
+	{
+		ms_pOggParser = new JCOggParser();
+	}
+	return ms_pOggParser;
+}
+//-----------------------------------------------------------------------------
+void JCOggParser::DelInstance( void )
+{
+
+}
+//-----------------------------------------------------------------------------
+bool JCOggParser::copyBuffer( char* p_pBuffer,int p_nSize )
+{
+	if( p_pBuffer == NULL || p_nSize <=0 ) return false;
+	if( m_nCurBufferPos + p_nSize > m_nBufferSize )
+	{
+		int nElargeSize = (p_nSize<=READ_OGG_BUFFER_TEMP_SIZE) ? READ_OGG_BUFFER_TEMP_SIZE : p_nSize;
+		char* pNewBuffer = new char[m_nBufferSize + nElargeSize];
+		memcpy( pNewBuffer,m_pBuffer,m_nBufferSize );
+		m_nBufferSize += nElargeSize;
+		delete m_pBuffer;
+		m_pBuffer = pNewBuffer;
+	}
+	memcpy( m_pBuffer+m_nCurBufferPos,p_pBuffer,p_nSize );
+	m_nCurBufferPos += p_nSize;
+	return true;
+}
+//------------------------------------------------------------------------------
+JCWaveInfo* JCOggParser::GetWaveInfo( const char* p_sFileName,unsigned char* p_sBuffer, int p_nBufferSize )
+{
+	m_nCurBufferPos = 0;
+	OggVorbis_File  pOggStream;
+	vorbis_info* pVorbisInfo = NULL;
+	int nResult = -1;
+	if( p_sBuffer != NULL && p_nBufferSize > 0 )
+	{
+		nResult = ov_open_callbacks( NULL, &pOggStream, (const char*)p_sBuffer, p_nBufferSize, OV_CALLBACKS_DEFAULT );
+	}
+	else if( p_sFileName != NULL )
+	{
+		FILE* fp = NULL;
+		fp = fopen( p_sFileName, "rb" );
+		if( fp )
+		{
+			nResult = ov_open_callbacks( (void*)fp, &pOggStream, NULL, 0, OV_CALLBACKS_DEFAULT );
+		}
+		fclose( fp );
+	}
+	if( nResult >= 0 )
+	{
+		pVorbisInfo = ov_info( &pOggStream, -1 );
+		char pBufferData[ READ_OGG_BUFFER_TEMP_SIZE ];//解码时候的缓冲区
+		int nSize = 0;
+		int nPortion = 0;
+		int nResult1 = 0;
+		while( true )
+		{
+			nResult1 = ov_read( &pOggStream, pBufferData, sizeof(pBufferData), 0, 2, 1, &nPortion );
+			if( nResult1 > 0 )
+			{
+				nSize += nResult1;
+				copyBuffer( pBufferData,nResult1 );
+			}
+			else if( nResult1 == 0 )
+			{
+				break;
+			}
+			else
+			{
+				LOGE("JCOggParser::GetWaveInfo error 1");
+				return NULL;
+			}
+		}
+		if( nSize == 0)
+		{
+			LOGE("JCOggParser::GetWaveInfo error 2");
+			return NULL;
+		}
+		JCWaveInfo* pWaveInfo = new JCWaveInfo();
+		pWaveInfo->m_nRealDataSize = nSize;
+		pWaveInfo->m_pData = new unsigned char[nSize];
+		if( nSize == m_nCurBufferPos )
+		{
+			memcpy( pWaveInfo->m_pData,m_pBuffer,nSize*sizeof(char));
+		}
+		else
+		{
+			LOGE("JCOggParser::GetWaveInfo error 3");
+			return NULL;
+		}
+		pWaveInfo->m_kFmtBlock.wavFormat.dwSamplesPerSec = pVorbisInfo->rate;
+        pWaveInfo->m_kFmtBlock.wavFormat.wChannels = pVorbisInfo->channels;
+        //TODO 没有找到ogg的这个参数，似乎目前只支持16bit
+        pWaveInfo->m_kFmtBlock.wavFormat.wBitsPerSample = 16;
+        ov_clear(&pOggStream);
+		return pWaveInfo;
+	}
+	LOGE("JCOggParser::GetWaveInfo error 0");
+	return NULL;
+}
+//------------------------------------------------------------------------------
+}
+//-----------------------------END FILE--------------------------------