hxh263d.cpp

来自「著名的 helix realplayer 基于手机 symbian 系统的 播放」· C++ 代码 · 共 200 行

/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
 *  
 * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved. 
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 * The contents of this file, and the files included with this file, are 
 * subject to the current version of the RealNetworks Public Source License 
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 * the file under the RealNetworks Community Source License Version 1.0 
 * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl, 
 * in which case the RCSL will apply. You may also obtain the license terms 
 * directly from RealNetworks.  You may not use this file except in 
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 * applicable to this file, the RCSL.  Please see the applicable RPSL or 
 * RCSL for the rights, obligations and limitations governing use of the 
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 * This file is part of the Helix DNA Technology. RealNetworks is the 
 * developer of the Original Code and owns the copyrights in the portions 
 * it created. 
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 * ***** END LICENSE BLOCK ***** */ 

#define INITGUID
#include "hxtypes.h"
#include "ihxpckts.h"
#include "hxvamain.h"
#include "h263vdec.h"
#include "hxcinst.h"
#include "hvviddec.h"

//#define DEBUG_WRITEIO
#ifdef DEBUG_WRITEIO // writes the input packets and output yuv
#include "iowriter.h"
YUVFileWriter  *writer = 0;
#endif

HX_RESULT HXEXPORT
HXVtoYUV420Init(HXV10_INIT *pHxvInit, void **decoderState)
{
    HX_RESULT                   result;
    HX_RESULT                  ps = HXR_OK;
	VvVideoDecoderFilter *		decFlt=0;
	HXVA_Image_Format            in_format;
	HXVA_Image_Format            out_format;


    if (!pHxvInit || !decoderState)
        return HXR_POINTER;

	in_format.fid = HXVA_FID_H263PLUS;
    in_format.dimensions.width = pHxvInit->pels;
    in_format.dimensions.height = pHxvInit->lines;
    in_format.Complete();

    out_format.fid = HXVA_FID_YUV12;
    out_format.dimensions = in_format.dimensions;
    out_format.Complete();
    
    // CreateInstance		
	decFlt = VvVideoDecoderFilter::CreateInstance(ps);
	if(!decFlt || ps!=HXR_OK)
		return HXR_OUTOFMEMORY;
	
	ps = HXR_OK;	
	ps = decFlt->StartStreaming(in_format, out_format);
    if(ps != HXR_OK) 
	{
		decFlt->StopStreaming();
		delete decFlt;
		return HXR_INVALID_PARAMETER;
	}
	*decoderState = decFlt;

#ifdef DEBUG_WRITEIO
	BOOL failed;
	if(!writer)
	{
		writer = new YUVFileWriter("c:\\out.yuv", out_format, failed);
		if(!failed)
			writer->Open();
	}
#endif
    return HXR_OK;
}

HX_RESULT HXEXPORT
HXVtoYUV420Free(void *global)
{
	((VvVideoDecoderFilter *)(global))->StopStreaming();
	delete (VvVideoDecoderFilter *)(global);

#ifdef DEBUG_WRITEIO	
	if(writer)
	{
		writer->Close();
		delete writer;
	}
#endif

	return HXR_OK;
}



HX_RESULT HXEXPORT
HXVtoYUV420Transform
    (
    UCHAR     *pH263Packets,
    UCHAR     *pDecodedFrameBuffer,
    void      *pInputParams,
    void      *pOutputParams,
    void      *global
    )
{
    HX_RESULT       result;
    HX_RESULT      ps;
    HXVA_Image       src;
    HXVA_Image       dst;
    INT32             temporal_offset = 0;
    ULONG32 flags = 0;
    ULONG32 notes = 0;
	VvVideoDecoderFilter *decFlt;
	
	decFlt = (VvVideoDecoderFilter *)(global);	

    H263DecoderInParams  * pH263In  = (H263DecoderInParams *)pInputParams;
    H263DecoderOutParams * pH263Out = (H263DecoderOutParams *)pOutputParams;

    if (decFlt==0 || !pH263In || !pH263Out)
        return HXR_POINTER;

    pH263Out->numFrames = 0;  // Until we learn otherwise
    pH263Out->notes = 0;
    pH263Out->timestamp = 0;
    
    src.format = decFlt->m_input_format;
    src.size = pH263In->dataLength;
    src.sequence_number = pH263In->timestamp;  // presentation time
    src.SetBasePointer(pH263Packets);

    dst.format = decFlt->m_output_format;
    dst.size = 0;

    dst.sequence_number = src.sequence_number;
    dst.SetBasePointer(pDecodedFrameBuffer);

	ps = decFlt->Receive( src, dst);	
	if(ps!=HXR_OK)
	{
		pH263Out->numFrames = 1;
		pH263Out->notes |= RV_DECODE_DONT_DRAW;
		pH263Out->width = decFlt->m_output_format.dimensions.width;
		pH263Out->height = decFlt->m_output_format.dimensions.height;
		if(dst.size == 0) 
		{
			dst.size = (pH263Out->width * pH263Out->height);
			dst.size += (dst.size >> 1);
		}
		// Assign the presentation time for the display frame
		pH263Out->timestamp = dst.sequence_number++;
		return HXR_OK;
	}

	// Assign the number of frames out
    pH263Out->numFrames = 1;
    pH263Out->notes = 0;
	pH263Out->width = decFlt->m_output_format.dimensions.width;
	pH263Out->height = decFlt->m_output_format.dimensions.height;
	if(dst.size == 0) 
    {
        dst.size = (pH263Out->width * pH263Out->height);
        dst.size += (dst.size >> 1);
    }
	// Assign the presentation time for the display frame
    pH263Out->timestamp = dst.sequence_number++;

#ifdef DEBUG_WRITEIO
	if (writer && !(notes & RV_DECODE_DONT_DRAW))
    {
		writer->Write(dst);
    }
#endif

    return HXR_OK;
}