h264decoder.cpp

播放被H264_AAC所压缩的avi文件的播放器。

/*
 * Multimedia Multipoint Conferencing Unit(MMCU), ver 1.0
 * Copyright (c) KCC-Eoun Information Center										
 *																				
 * File: H264VideoDecoder.cpp															
 * Description: Base Class for h264 video decoder.
 *
 * The Initial Writer of Original Code is Yong Su.Han
 *
 * $Log: H264VideoDecoder.cpp, v $
 * Revision 1.0 2006-06-06 Yong Su.Han
 * Initial version
*/

#include "H264Decoder.h"
#include "Log.h"

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
/*
 Function: CH264Decoder
 Description :	
	Constructor. 
 Return : 
 Parameter(s) : 
 Author : HYS
 Final update date : 2006-06-06 
*/
//##ModelId=4753B7EA035C
CH264Decoder::CH264Decoder()
{

	//Parameter initialize
	m_decParam.flags = DECODE_FLAG_COMPLETE;
	m_decParam.nLogLevel = 0;
	m_decParam.szLogFileName[0] = 0;
	
	m_nCodecIdx = -1;

	memset(&m_picYuv, 0, sizeof(DEC_YUV));
	memset(&m_picCSP, 0, sizeof(DEC_CSP));
}

/*
 Function: ~CH264Decoder
 Description :	
	Destructor. 
 Return : 
 Parameter(s) : 
 Author : HYS
 Final update date : 2006-06-06 
*/
//##ModelId=4753B7EA035D
CH264Decoder::~CH264Decoder()
{
}

/*
 Function: CodecInit
 Description :	
	init the H264 Decoder. 
 Return : 
	H263 decoder ID 
 Parameter(s) : 
 Author : HYS
 Final update date : 2006-06-06 
*/
//##ModelId=4753B7EA035F
int CH264Decoder::CodecInit()
{
	if( (m_nCodecIdx = H264_DEC_AllocVideo(&m_decParam, 0)) < 0 )
	{
		LogMsg(LOG_ERR, HCLN, "ERR: H.264 Codec Overflow VideoHandle!");
		return -1;
	}
	LogMsg(LOG_INFO, HCLN, "Alloc H.264 Decoder VideoHandle = %d", m_nCodecIdx);
	return m_nCodecIdx;
}

/*
 Function: CodecFree
 Description :	
	Free the H264 Decoder. 
 Return : 
	0: success
	otherwise: fail code
 Parameter(s) : 
	nVidIndex: H264 decoder ID 
 Author : HYS
 Final update date : 2006-06-06 
*/
//##ModelId=4753B7EA0360
int CH264Decoder::CodecFree()
{
	if( m_nCodecIdx >= 0)
	{
		H264_DEC_FreeVideo(m_nCodecIdx, 0);
		LogMsg(LOG_INFO, HCLN, "Free H.264 Decoder VideoHandle for VideoIndex = %d!", m_nCodecIdx);
	}
	else
		return -1;
	return 0;
}

//##ModelId=4753B7EA0361
int CH264Decoder::CodecReset()
{
	CodecFree();
	CodecInit();
	return 0;
}

//##ModelId=4753B7EA036B
void CH264Decoder::SetColorSpace(int nCSP, int nStride)
{
	m_nCSP = nCSP;
	m_nStride = nStride;
	
}
//##ModelId=4753B7EA036E
int CH264Decoder::Decode(BYTE *lpEncoded, int nEncLen, BYTE *lpCSP)
{
	int ret = 0;

	if( m_nCodecIdx < 0 )
	{
		LogMsg(LOG_WARNING, HCLN, "Invalid VideoIndex =%d", m_nCodecIdx);
		return 0;
	}

	m_picCSP.data = lpCSP;
	if( lpEncoded[0] == 0 && lpEncoded[1] == 0 && lpEncoded[2] == 0 && lpEncoded[3] == 0x01 )
		ret = H264_DEC_DecodeToCSP(m_nCodecIdx, &m_picCSP, lpEncoded, &nEncLen, m_nStride, m_nCSP, 1);
	else
		LogMsg(LOG_ERR, HCLN, "Invalid data");

	if( ret > 0 )
	{
		return ret;
	}

	return 0;
}