dmo_videodecoder.c

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    props.cBuffers = 1;
    props.cbBuffer = this->m_sDestType.lSampleSize;

    props.cbAlign = 1;
    props.cbPrefix = 0;
    this->m_pDMO_Filter->m_pAll->vt->SetProperties(this->m_pDMO_Filter->m_pAll, &props, &props1);
    this->m_pDMO_Filter->m_pAll->vt->Commit(this->m_pDMO_Filter->m_pAll);
#endif    
    this->iv.m_State = START;
}

void DMO_VideoDecoder_StopInternal(DMO_VideoDecoder *this)
{
    // this->m_pDMO_Filter->Stop(this->m_pDMO_Filter);
    //??? why was this here ??? m_pOurOutput->SetFramePointer(0);
}

int DMO_VideoDecoder_DecodeInternal(DMO_VideoDecoder *this, const void* src, int size, int is_keyframe, char* imdata)
{
//    IMediaSample* sample = 0;
    int result;
    unsigned long status; // to be ignored by M$ specs
    DMO_OUTPUT_DATA_BUFFER db;
    CMediaBuffer* bufferin;
//+    uint8_t* imdata = dest ? dest->Data() : 0;
    
    Debug printf("DMO_VideoDecoder_DecodeInternal(%p,%p,%d,%d,%p)\n",this,src,size,is_keyframe,imdata);

//    this->m_pDMO_Filter->m_pAll->vt->GetBuffer(this->m_pDMO_Filter->m_pAll, &sample, 0, 0, 0);
//    if (!sample)
//    {
//	Debug printf("ERROR: null sample\n");
//	return -1;
//    }

#ifdef WIN32_LOADER
    Setup_FS_Segment();
#endif

    bufferin = CMediaBufferCreate(size, (void*)src, size, 0);
    result = this->m_pDMO_Filter->m_pMedia->vt->ProcessInput(this->m_pDMO_Filter->m_pMedia, 0,
						      (IMediaBuffer*)bufferin,
						      DMO_INPUT_DATA_BUFFERF_SYNCPOINT,
						      0, 0);
    ((IMediaBuffer*)bufferin)->vt->Release((IUnknown*)bufferin);

    if (result != S_OK)
    {
        /* something for process */
	if (result != S_FALSE)
	    printf("ProcessInputError  r:0x%x=%d (keyframe: %d)\n", result, result, is_keyframe);
	else
	    printf("ProcessInputError  FALSE ?? (keyframe: %d)\n", is_keyframe);
	return size;
    }

    db.rtTimestamp = 0;
    db.rtTimelength = 0;
    db.dwStatus = 0;
    db.pBuffer = (IMediaBuffer*) CMediaBufferCreate(this->m_sDestType.lSampleSize,
						    imdata, 0, 0);
    result = this->m_pDMO_Filter->m_pMedia->vt->ProcessOutput(this->m_pDMO_Filter->m_pMedia,
						   (imdata) ? 0 : DMO_PROCESS_OUTPUT_DISCARD_WHEN_NO_BUFFER,
						   1, &db, &status);
    //m_pDMO_Filter->m_pMedia->vt->Lock(m_pDMO_Filter->m_pMedia, 0);
    if ((unsigned)result == DMO_E_NOTACCEPTING)
	printf("ProcessOutputError: Not accepting\n");
    else if (result)
	printf("ProcessOutputError: r:0x%x=%d  %ld  stat:%ld\n", result, result, status, db.dwStatus);

    ((IMediaBuffer*)db.pBuffer)->vt->Release((IUnknown*)db.pBuffer);

    //int r = m_pDMO_Filter->m_pMedia->vt->Flush(m_pDMO_Filter->m_pMedia);
    //printf("FLUSH %d\n", r);

    return 0;
}

/*
 * bits == 0   - leave unchanged
 */
//int SetDestFmt(DMO_VideoDecoder * this, int bits = 24, fourcc_t csp = 0);
int DMO_VideoDecoder_SetDestFmt(DMO_VideoDecoder *this, int bits, unsigned int csp)
{
    HRESULT result;
    int should_test=1;
    
    Debug printf("DMO_VideoDecoder_SetDestFmt (%p, %d, %d)\n",this,bits,(int)csp);
        
       /* if (!CImage::Supported(csp, bits))
	return -1;
*/
    // BitmapInfo temp = m_obh;
    
    if (!csp)	// RGB
    {
	int ok = true;

	switch (bits)
        {
	case 15:
	    this->m_sDestType.subtype = MEDIASUBTYPE_RGB555;
    	    break;
	case 16:
	    this->m_sDestType.subtype = MEDIASUBTYPE_RGB565;
	    break;
	case 24:
	    this->m_sDestType.subtype = MEDIASUBTYPE_RGB24;
	    break;
	case 32:
	    this->m_sDestType.subtype = MEDIASUBTYPE_RGB32;
	    break;
	default:
            ok = false;
	    break;
	}

        if (ok) {
	    this->iv.m_obh.biBitCount=bits;
            if( bits == 15 || bits == 16 ) {
	      this->iv.m_obh.biSize=sizeof(BITMAPINFOHEADER)+12;
	      this->iv.m_obh.biCompression=3;//BI_BITFIELDS
	      this->iv.m_obh.biSizeImage=abs((int)(2*this->iv.m_obh.biWidth*this->iv.m_obh.biHeight));
	    }
            
            if( bits == 16 ) {
	      this->iv.m_obh.colors[0]=0xF800;
	      this->iv.m_obh.colors[1]=0x07E0;
	      this->iv.m_obh.colors[2]=0x001F;
            } else if ( bits == 15 ) {
	      this->iv.m_obh.colors[0]=0x7C00;
	      this->iv.m_obh.colors[1]=0x03E0;
	      this->iv.m_obh.colors[2]=0x001F;
            } else {
	      this->iv.m_obh.biSize = sizeof(BITMAPINFOHEADER);
	      this->iv.m_obh.biCompression = 0;	//BI_RGB
	      //this->iv.m_obh.biHeight = labs(this->iv.m_obh.biHeight);
	      this->iv.m_obh.biSizeImage = labs(this->iv.m_obh.biWidth * this->iv.m_obh.biHeight)
                              * ((this->iv.m_obh.biBitCount + 7) / 8);
            }
        }
	//.biSizeImage=abs(temp.biWidth*temp.biHeight*((temp.biBitCount+7)/8));
    } else
    {	// YUV
        int ok = true;
	switch (csp)
	{
	case fccYUY2:
	    this->m_sDestType.subtype = MEDIASUBTYPE_YUY2;
	    break;
	case fccYV12:
	    this->m_sDestType.subtype = MEDIASUBTYPE_YV12;
	    break;
	case fccIYUV:
	    this->m_sDestType.subtype = MEDIASUBTYPE_IYUV;
	    break;
	case fccI420:
	    this->m_sDestType.subtype = MEDIASUBTYPE_I420;
	    break;
	case fccUYVY:
	    this->m_sDestType.subtype = MEDIASUBTYPE_UYVY;
	    break;
	case fccYVYU:
	    this->m_sDestType.subtype = MEDIASUBTYPE_YVYU;
	    break;
	case fccYVU9:
	    this->m_sDestType.subtype = MEDIASUBTYPE_YVU9;
	default:
	    ok = false;
            break;
	}

        if (ok) {
	  if (csp != 0 && csp != 3 && this->iv.m_obh.biHeight > 0)
    	    this->iv.m_obh.biHeight *= -1; // YUV formats uses should have height < 0
	  this->iv.m_obh.biSize = sizeof(BITMAPINFOHEADER);
	  this->iv.m_obh.biCompression=csp;
	  this->iv.m_obh.biBitCount=bits;

	  this->iv.m_obh.biSizeImage = labs(this->iv.m_obh.biWidth * this->iv.m_obh.biHeight)
                                       * ((this->iv.m_obh.biBitCount + 7) / 8);
        }
    }
    this->m_sDestType.lSampleSize = this->iv.m_obh.biSizeImage;
    memcpy(&(this->m_sVhdr2->bmiHeader), &this->iv.m_obh, sizeof(this->iv.m_obh));
    this->m_sVhdr2->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
    if (this->m_sVhdr2->bmiHeader.biCompression == 3)
        this->m_sDestType.cbFormat = sizeof(VIDEOINFOHEADER) + 12;
    else
        this->m_sDestType.cbFormat = sizeof(VIDEOINFOHEADER);


    switch(csp)
    {
    case fccYUY2:
	if(!(this->m_Caps & CAP_YUY2))
	    should_test=false;
	break;
    case fccYV12:
	if(!(this->m_Caps & CAP_YV12))
	    should_test=false;
	break;
    case fccIYUV:
	if(!(this->m_Caps & CAP_IYUV))
	    should_test=false;
	break;
    case fccI420:
	if(!(this->m_Caps & CAP_I420))
	    should_test=false;
	break;
    case fccUYVY:
	if(!(this->m_Caps & CAP_UYVY))
	    should_test=false;
	break;
    case fccYVYU:
	if(!(this->m_Caps & CAP_YVYU))
	    should_test=false;
	break;
    case fccYVU9:
	if(!(this->m_Caps & CAP_YVU9))
	    should_test=false;
	break;
    }

#ifdef WIN32_LOADER
    Setup_FS_Segment();
#endif

//    if(should_test)
//	result = this->m_pDMO_Filter->m_pOutputPin->vt->QueryAccept(this->m_pDMO_Filter->m_pOutputPin, &this->m_sDestType);
//    else
//	result = -1;

    // test accept
    if(!this->m_pDMO_Filter) return 0;
    result = this->m_pDMO_Filter->m_pMedia->vt->SetOutputType(this->m_pDMO_Filter->m_pMedia, 0, &this->m_sDestType, DMO_SET_TYPEF_TEST_ONLY);

    if (result != 0)
    {
	if (csp)
	    printf("Warning: unsupported color space\n");
	else
	    printf("Warning: unsupported bit depth\n");

	this->m_sDestType.lSampleSize = this->iv.m_decoder.biSizeImage;
	memcpy(&(this->m_sVhdr2->bmiHeader), &this->iv.m_decoder, sizeof(this->iv.m_decoder));
	this->m_sVhdr2->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
	if (this->m_sVhdr2->bmiHeader.biCompression == 3)
    	    this->m_sDestType.cbFormat = sizeof(VIDEOINFOHEADER) + 12;
	else
    	    this->m_sDestType.cbFormat = sizeof(VIDEOINFOHEADER);

	return -1;
    }

    memcpy( &this->iv.m_decoder, &this->iv.m_obh, sizeof(this->iv.m_obh));

//    m_obh=temp;
//    if(csp)
//	m_obh.biBitCount=BitmapInfo::BitCount(csp);
    this->iv.m_bh->biBitCount = bits;

    //DMO_VideoDecoder_Restart(this);

    this->m_pDMO_Filter->m_pMedia->vt->SetOutputType(this->m_pDMO_Filter->m_pMedia, 0, &this->m_sDestType, 0);

    return 0;
}


int DMO_VideoDecoder_SetDirection(DMO_VideoDecoder *this, int d)
{
    this->iv.m_obh.biHeight = (d) ? this->iv.m_bh->biHeight : -this->iv.m_bh->biHeight;
    this->m_sVhdr2->bmiHeader.biHeight = this->iv.m_obh.biHeight;
    return 0;
}