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 +1,208 @@
+/**
+@file			JCWaveInfo.cpp
+@brief			
+@author			James
+@version		1.0
+@date			2012_11_17
+*/
+
+#include "JCWaveInfo.h"
+#include "../../util/Log.h"
+#pragma warning (disable: 4996)
+
+namespace laya
+{
+//------------------------------------------------------------------------------
+JCWaveInfo::JCWaveInfo( void )
+{
+    m_nTouchTime = 0;
+	m_pExternalMark = NULL;
+	m_pData = NULL;
+	m_nCurPos = 0;
+}
+//------------------------------------------------------------------------------
+JCWaveInfo::~JCWaveInfo( void )
+{
+	//赋值为NULL，就可以了，不需要删除
+	if( m_pExternalMark != NULL )
+	{
+		m_pExternalMark = NULL;
+	}
+	if( m_pData != NULL )
+	{
+		delete[] m_pData;
+		m_pData = NULL;
+	}
+}
+//------------------------------------------------------------------------------
+bool JCWaveInfo::LoadData( const char* p_sFileName )
+{
+	FILE *fp = fopen( p_sFileName,"rb" );
+	if( fp == NULL )
+	{
+		LOGE("JCWaveInfo::LoadData Can't open file %s",p_sFileName );
+		return false;
+	}
+	fseek( fp,0,SEEK_END );
+	int nSize=ftell(fp);
+	fseek(fp,0L,SEEK_SET);
+	unsigned char* sBuffer = new unsigned char[nSize];
+	fread( sBuffer,1,nSize,fp );
+	fclose(fp);
+	m_nCurPos = 0;
+	LoadData( sBuffer,nSize ); 
+    if (sBuffer)
+    {
+        delete[] sBuffer;
+        sBuffer = NULL;
+    }
+	return true;
+}
+//------------------------------------------------------------------------------
+bool JCWaveInfo::LoadData( unsigned char* p_sBuffer,int p_nBufferSize )
+{
+	if( p_sBuffer == NULL )
+	{
+		LOGE("JCWaveInfo::LoadData buffer == null" );
+		return false;
+	}
+
+	//读取 RIFF 头
+	{
+		read( &m_kRiff, sizeof(RIFF_HEADER), p_sBuffer );
+		if(	memcmp( m_kRiff.szRiffID, "RIFF", 4 ) != 0 || memcmp( m_kRiff.szRiffFormat, "WAVE", 4 ) != 0 )
+		{
+			LOGE("JCWaveInfo::LoadData No a vaild wave file!\n");
+			return false;
+		}
+		m_nCurPos += sizeof(RIFF_HEADER);
+	}
+
+	//读取格式
+	{
+		read( &m_kFmtBlock.szFmtID, 4, p_sBuffer );
+		m_nCurPos += 4;
+		read( &m_kFmtBlock.dwFmtSize, 4, p_sBuffer );
+		m_nCurPos += 4;
+
+		if(	memcmp(m_kFmtBlock.szFmtID, "fmt ", 4) !=0 )
+		{
+			LOGE("JCWaveInfo::LoadData we only support follow format" );
+			return false;
+		}
+		if(	m_kFmtBlock.dwFmtSize != 18 && m_kFmtBlock.dwFmtSize != 16 )
+		{
+			LOGE("JCWaveInfo::LoadData we only support Format: linear PCM  size = %d",m_kFmtBlock.dwFmtSize  );
+			return false;
+		}
+		if( m_kFmtBlock.dwFmtSize == 16 )
+		{
+			read(&m_kFmtBlock.wavFormat, 16, p_sBuffer );
+			m_nCurPos += 16;
+		}
+		else if( m_kFmtBlock.dwFmtSize == 18 )
+		{
+			read(&m_kFmtBlock.wavFormat, 18, p_sBuffer );
+			m_nCurPos += 18;
+		}
+        /*
+		if(	m_kFmtBlock.wavFormat.dwSamplesPerSec != 22050 )
+		{
+			LOGE("we only support Samples Rate:  22050 KHz" );
+			return false;
+		}
+		if(	m_kFmtBlock.wavFormat.wChannels != 0x1 )
+		{
+			LOGE("we only support one channel" );
+			return false;
+		}
+		if(	m_kFmtBlock.wavFormat.wBitsPerSample != 16 )
+		{
+			LOGE("we only support BitsPerSample: 16" );
+			return false;
+		}
+		if(	m_kFmtBlock.wavFormat.wFormatTag != 0x1 )
+		{
+			LOGE("we only support wFormatTag != 0x1" );
+			return false;
+		}
+        */
+	}
+    /*
+	//读取无用信息 改到下面循环查找了
+    {
+        //试图读取fact
+        read(&m_kFact, sizeof(FACT_BLOCK), p_sBuffer);
+        if (memcmp(m_kFact.szFactID, "fact", 4) == 0)
+        {
+            m_nCurPos += sizeof(FACT_BLOCK);
+            read(&m_vFackBlockBuffer, m_kFact.dwFactSize, p_sBuffer);
+            m_nCurPos += m_kFact.dwFactSize;
+        }
+        //试图读取JUNK
+        read(&m_kJunkBlock, sizeof(_JUNK_BLOCK), p_sBuffer);
+        if (memcmp(m_kJunkBlock.szJUNK, "JUNK", 4) == 0)
+        {
+            m_nCurPos += sizeof(_JUNK_BLOCK) + m_kJunkBlock.dwJunkSize;
+        }
+        //试图读取FLLR
+        read(&m_kJunkBlock, sizeof(_JUNK_BLOCK), p_sBuffer);
+        if (memcmp(m_kJunkBlock.szJUNK, "FLLR", 4) == 0)
+        {
+            m_nCurPos += sizeof(_JUNK_BLOCK) + m_kJunkBlock.dwJunkSize;
+        }
+    }
+    */
+    bool bResult = false;
+    int nSize = p_nBufferSize - sizeof(DATA_BLOCK);
+	while( m_nCurPos < nSize )
+	{
+		read( &m_kDataBlock, sizeof(DATA_BLOCK), p_sBuffer );
+		if ( memcmp( m_kDataBlock.szDataID, "data", 4 ) == 0 )
+		{
+            m_kDataBlock.dwDataSize /= 2;
+            m_nCurPos += sizeof(DATA_BLOCK);
+            bResult = true;
+            break;
+		}
+        else
+        {
+            m_nCurPos += sizeof(DATA_BLOCK) + m_kDataBlock.dwDataSize;
+        }
+	}
+	
+    if (bResult == false)
+    {
+        LOGE("JCWaveInfo::LoadData parse wav error");
+        return false;
+    }
+	//拿出data数据
+	m_nRealDataSize = m_kDataBlock.dwDataSize * 2;
+	m_pData = new U8[m_nRealDataSize];
+	for( unsigned int i =0; i< m_kDataBlock.dwDataSize; i++ )
+	{
+		U8 n1 = (U8) getC( p_sBuffer );
+		m_nCurPos ++;
+		U8 n2 = (U8) getC( p_sBuffer );
+		m_nCurPos ++;
+
+		m_pData[i*2+0] = n1;
+		m_pData[i*2+1] = n2;
+	}
+	return true;
+}
+//------------------------------------------------------------------------------
+void JCWaveInfo::read( void* pRet, int p_nSize,unsigned char* p_sBuffer )
+{
+	unsigned char* p = p_sBuffer + m_nCurPos;
+	memcpy( pRet,(void*)(p),p_nSize );
+}
+//------------------------------------------------------------------------------
+unsigned char JCWaveInfo::getC( unsigned char* p_sBuffer )
+{
+	return p_sBuffer[m_nCurPos];
+}
+//------------------------------------------------------------------------------
+}
+
+//-----------------------------END FILE--------------------------------