/*
* Class: sage_DShowCaptureDevice
* Method: switchToConnector0
* Signature: (JIILjava/lang/String;II)V
*/
JNIEXPORT void JNICALL Java_sage_DShowCaptureDevice_switchToConnector0
(JNIEnv *env, jobject jo, jlong capInfo, jint crossType, jint crossIndex, jstring tuningMode,
jint countryCode, jint videoFormatCode)
{
char szTuningMode[16];
if (!capInfo) return;
DShowCaptureInfo* pCapInfo = (DShowCaptureInfo*) capInfo;
pCapInfo->videoFormatCode = videoFormatCode;
const char* pTuningMode = env->GetStringUTFChars(tuningMode, NULL);
strncpy( szTuningMode, pTuningMode, sizeof(szTuningMode) );
env->ReleaseStringUTFChars(tuningMode, pTuningMode);
slog((env, "switchToConnector0 tuningMode:%s.\r\n", szTuningMode ));
if ( String2TVType( szTuningMode ) && BDATypeNum( pCapInfo->captureConfig ) > 0 ) //ZQ REMOVE ME
{
TV_TYPE newBDAType = String2TVType( szTuningMode );
if ( pCapInfo->dwBDAType != newBDAType && pCapInfo->dwBDAType > 0 )
{
int i, CaptureNum = pCapInfo->captureNum;
for ( i = 0; i < CaptureNum; i++ )
if ( pCapInfo->captures[i] && pCapInfo->captures[i]->dwBDAType == pCapInfo->dwBDAType )
break;
if ( i >= CaptureNum )
{
slog((env, "switchToConnector0 ERROR: Orignal BDA Capture :%d is not found\r\n", pCapInfo->dwBDAType ));
ASSERT( 0 );
return;
}
//save back
memcpy( pCapInfo->captures[i], pCapInfo, sizeof(DShowCaptureInfo) );
for ( i = 0; i < CaptureNum; i++ )
if ( pCapInfo->captures[i] && pCapInfo->captures[i]->dwBDAType == newBDAType )
break;
if ( i >= CaptureNum )
{
slog((env, "switchToConnector0 ERROR: BDA Capture :%s is not found\r\n", szTuningMode ));
ASSERT( 0 );
return;
}
memcpy( pCapInfo, pCapInfo->captures[i], sizeof(DShowCaptureInfo) );
setChannelDev( (CHANNEL_DATA*)pCapInfo->channel, (void*)pCapInfo );
slog((env, "switchToConnector0 BDA Capture :%s is switched.\r\n", szTuningMode ));
}
//strncpy( pCapInfo->tvType, szTuningMode, sizeof(pCapInfo->tvType) );
return;
}
if (!pCapInfo->pCrossbar)
return;
slog((env, "switchToConnector0 %d type:%d index:%d country:%d format:%d Mode:%s\r\n",
(int)capInfo, crossType, crossIndex, countryCode, videoFormatCode, szTuningMode ));
strncpy( pCapInfo->TuningMode, szTuningMode, sizeof(pCapInfo->TuningMode) );
// Setup the tuner first since it's upstream from the crossbar
if (crossType == 1 && pCapInfo->pTVTuner)
{
IAMTVTuner* pTunerProps = NULL;
HRESULT hr = pCapInfo->pTVTuner->QueryInterface(IID_IAMTVTuner, (void**)&pTunerProps);
if (SUCCEEDED(hr))
{
HRESULT ccHr = S_OK;
if (countryCode)
{
long currCountry = 0;
hr = pTunerProps->get_CountryCode(&currCountry);
if (FAILED(hr) || currCountry != countryCode)
{
hr = ccHr = pTunerProps->put_CountryCode(countryCode);
HTESTPRINT(hr);
}
hr = pTunerProps->put_TuningSpace(countryCode);
HTESTPRINT(hr);
}
AMTunerModeType currMode;
TunerInputType currTuneType;
HRESULT currModehr = pTunerProps->get_Mode(&currMode);
HTESTPRINT(currModehr);
HRESULT currTypehr = pTunerProps->get_InputType(0, &currTuneType);
HTESTPRINT(currTypehr);
AMTunerModeType newMode;
TunerInputType tuneType;
slog((env, "Tuning mode:%s; current tuning type:%d current tuning model:%d\r\n", pCapInfo->TuningMode, currTuneType, currMode ));
if (!strcmp(pCapInfo->TuningMode, "Air"))
{
newMode = AMTUNER_MODE_TV;
tuneType = TunerInputAntenna;
}
else if (!strcmp(pCapInfo->TuningMode, "FM Radio"))
{
newMode = AMTUNER_MODE_FM_RADIO;
tuneType = TunerInputAntenna;
}
else
if (!strcmp(pCapInfo->TuningMode, "HRC"))
{
newMode = AMTUNER_MODE_TV;
tuneType = (TunerInputType)2;
} else
{
newMode = AMTUNER_MODE_TV;
tuneType = TunerInputCable;
}
if (FAILED(currModehr) || newMode != currMode)
{
hr = pTunerProps->put_Mode(newMode);
HTESTPRINT(hr);
}
if (FAILED(currTypehr) || tuneType != currTuneType)
{
hr = pTunerProps->put_InputType(0, tuneType);
HTESTPRINT(hr);
}
long currConnInput = 0;
hr = pTunerProps->get_ConnectInput(&currConnInput);
if (FAILED(hr) || currConnInput != 0)
{
hr = pTunerProps->put_ConnectInput(0);
HTESTPRINT(hr);
}
//long tvFormat;
//hr = pTunerProps->get_TVFormat(&tvFormat);
//ZQ test
/*
{
IKsPropertySet *pKSProp=NULL;
KSPROPERTY_TUNER_STANDARD_S Standard;
hr = pCapInfo->pTVTuner->QueryInterface(IID_IKsPropertySet, (PVOID *)&pKSProp);
if ( SUCCEEDED(hr) )
{
memset(&Standard,0,sizeof(KSPROPERTY_TUNER_STANDARD_S));
Standard.Standard=videoFormatCode;
HRESULT hr=pKSProp->Set(PROPSETID_TUNER,
KSPROPERTY_TUNER_STANDARD,
INSTANCE_DATA_OF_PROPERTY_PTR(&Standard),
INSTANCE_DATA_OF_PROPERTY_SIZE(Standard),
&Standard, sizeof(Standard));
if(FAILED(hr))
{
slog(( env, "Failed set Video Format:%d on TVTuner hr=0x%x \r\n", videoFormatCode, hr ));
} else
{
slog(( env, "Force to set Video Format:%d on TVTuner hr=0x%x \r\n", videoFormatCode, hr ));
}
SAFE_RELEASE( pKSProp );
} else
{
slog(( env, "Failed to get IKsPropertySet to set Video Format:%d on TVTuner hr=0x%x \r\n", videoFormatCode, hr ));
}
}*/
SAFE_RELEASE(pTunerProps);
}
if (pCapInfo->pTVAudio)
{
IAMTVAudio* pAudioProps = NULL;
hr = pCapInfo->pTVAudio->QueryInterface(IID_IAMTVAudio, (void**)&pAudioProps);
if (SUCCEEDED(hr))
{
// For Vista+; there's the 'PRESET' flags which we want to use instead for setting the TV audio
// selections.
OSVERSIONINFOEX osInfo;
ZeroMemory(&osInfo, sizeof(OSVERSIONINFOEX));
osInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
DWORD vistaPlus = 0;
if (GetVersionEx((LPOSVERSIONINFO)&osInfo))
{
if (osInfo.dwMajorVersion >= 6)
vistaPlus = 1;
}
if (vistaPlus)
hr = pAudioProps->put_TVAudioMode(AMTVAUDIO_PRESET_STEREO | AMTVAUDIO_PRESET_LANG_A);
else
hr = pAudioProps->put_TVAudioMode(AMTVAUDIO_MODE_STEREO | AMTVAUDIO_MODE_LANG_A);
HTESTPRINT(hr);
}
SAFE_RELEASE(pAudioProps);
}
}
// Setup the crossbar for the graph
IAMCrossbar *pXBar1 = NULL;
HRESULT hr = pCapInfo->pCrossbar->QueryInterface(IID_IAMCrossbar, (void**)&pXBar1);
HTESTPRINT(hr);
// Look through the pins on the crossbar and find the correct one for the type of
// connector we're routing. Also find the aligned audio pin and set that too.
int tempCrossIndex = crossIndex;
long i;
long videoOutNum = -1;
long audioOutNum = -1;
long numIn, numOut;
hr = pXBar1->get_PinCounts(&numOut, &numIn);
HTESTPRINT(hr);
long relatedPin, pinType;
for (i = 0; i < numOut; i++)
{
hr = pXBar1->get_CrossbarPinInfo(FALSE, i, &relatedPin, &pinType);
HTESTPRINT(hr);
if (pinType == PhysConn_Video_VideoDecoder)
videoOutNum = i;
else if (pinType == PhysConn_Audio_AudioDecoder)
audioOutNum = i;
}
for (i = 0; i < numIn; i++)
{
hr = pXBar1->get_CrossbarPinInfo(TRUE, i, &relatedPin, &pinType);
HTESTPRINT(hr);
if (pinType == crossType || (pinType == PhysConn_Video_YRYBY && crossType == 90)) // 90 is Component+SPDIF
{
if ((crossType != 1 && tempCrossIndex > 0) ||
tempCrossIndex == 1)
{
tempCrossIndex--;
continue;
}
// Route the video
long currRoute = -1;
// hr = pXBar1->get_IsRoutedTo(videoOutNum, &currRoute);
// if (FAILED(hr) || currRoute != i)
{
hr = pXBar1->Route(videoOutNum, i);
HTESTPRINT(hr);
}
if (audioOutNum >= 0)
{
if (crossType == PhysConn_Video_YRYBY || crossType == 90)
{
long relatedPinType = 0;
long junk = 0;
pXBar1->get_CrossbarPinInfo(TRUE, relatedPin, &junk, &relatedPinType);
if ((relatedPinType != PhysConn_Audio_SPDIFDigital && crossType == 90) ||
(relatedPinType == PhysConn_Audio_SPDIFDigital && crossType == PhysConn_Video_YRYBY))
{
// Find the other audio input pin that's related to the component input and use that
int j;
long otherRelatedPin = 0;
for (j = 0; j < numIn; j++)
{
if (j == relatedPin) continue;
otherRelatedPin = 0;
pXBar1->get_CrossbarPinInfo(TRUE, j, &otherRelatedPin, &junk);
if (otherRelatedPin == i)
{
slog(( env, "Crossbar swapping related audio pins on component video input old:%d new:%d\r\n", relatedPin, j));
relatedPin = j;
break;
}
}
}
}
// Route any related audio
// hr = pXBar1->get_IsRoutedTo(audioOutNum, &currRoute);
// if (FAILED(hr) || currRoute != relatedPin)
{
hr = pXBar1->Route(audioOutNum, relatedPin);
HTESTPRINT(hr);
}
}
slog(( env, "Crossbar route: video:%d, auido:%d\r\n", i, relatedPin ));
break;
}
}
SAFE_RELEASE(pXBar1);
if (audioOutNum == -1)
{
// It may have 2 crossbars, like ATI. Search for the second one.
hr = pCapInfo->pBuilder->FindInterface(&LOOK_UPSTREAM_ONLY, NULL, pCapInfo->pCrossbar,
IID_IAMCrossbar, (void**)&pXBar1);
if (SUCCEEDED(hr))
{
slog((env, "Found secondary audio crossbar, routing it\r\n"));
tempCrossIndex = crossIndex;
hr = pXBar1->get_PinCounts(&numOut, &numIn);
HTESTPRINT(hr);
for (i = 0; i < numOut; i++)
{
hr = pXBar1->get_CrossbarPinInfo(FALSE, i, &relatedPin, &pinType);
HTESTPRINT(hr);
if (pinType == PhysConn_Audio_AudioDecoder)
{
audioOutNum = i;
break;
}
}
for (i = 0; i < numIn && audioOutNum >= 0; i++)
{
hr = pXBar1->get_CrossbarPinInfo(TRUE, i, &relatedPin, &pinType);
HTESTPRINT(hr);
if (pinType == crossType)
{
if ((crossType != 1 && tempCrossIndex > 0) ||
tempCrossIndex == 1)
{
tempCrossIndex--;
continue;
}
// Route any related audio
hr = pXBar1->Route(audioOutNum, relatedPin);
HTESTPRINT(hr);
break;
}
}
SAFE_RELEASE(pXBar1);
}
}
IAMAnalogVideoDecoder *vidDec = NULL;
hr = pCapInfo->pVideoCaptureFilter->QueryInterface(IID_IAMAnalogVideoDecoder, (void**)&vidDec);
if (SUCCEEDED(hr))
{
/*if (FAILED(ccHr) && countryCode == 54)
{
tvFormat = AnalogVideo_PAL_N;
}*/
hr = vidDec->put_TVFormat(videoFormatCode);
HTESTPRINT(hr);
/*if (FAILED(hr) && tvFormat == AnalogVideo_PAL_N)
{
hr = vidDec->put_TVFormat(AnalogVideo_PAL_B);
} */
SAFE_RELEASE(vidDec);
}
slog((env, "DONE: switchToConnector0 %d type=%d index=%d\r\n", (int)capInfo, crossType, crossIndex));
}
bool directx_camera_server::open_and_find_parameters(const int which, unsigned width, unsigned height)
{
HRESULT hr;
//-------------------------------------------------------------------
// Create COM and DirectX objects needed to access a video stream.
// Initialize COM. This must have a matching uninitialize somewhere before
// the object is destroyed.
#ifdef DEBUG
printf("directx_camera_server::open_and_find_parameters(): Before CoInitialize\n");
#endif
CoInitialize(NULL);
// Create the filter graph manager
#ifdef DEBUG
printf("directx_camera_server::open_and_find_parameters(): Before CoCreateInstance FilterGraph\n");
#endif
CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER,
IID_IGraphBuilder, (void **)&_pGraph);
if (_pGraph == NULL) {
fprintf(stderr, "directx_camera_server::open_and_find_parameters(): Can't create graph manager\n");
return false;
}
_pGraph->QueryInterface(IID_IMediaControl, (void **)&_pMediaControl);
_pGraph->QueryInterface(IID_IMediaEvent, (void **)&_pEvent);
// Create the Capture Graph Builder.
#ifdef DEBUG
printf("directx_camera_server::open_and_find_parameters(): Before CoCreateInstance CaptureGraphBuilder2\n");
#endif
CoCreateInstance(CLSID_CaptureGraphBuilder2, NULL, CLSCTX_INPROC,
IID_ICaptureGraphBuilder2, (void **)&_pBuilder);
if (_pBuilder == NULL) {
fprintf(stderr, "directx_camera_server::open_and_find_parameters(): Can't create graph builder\n");
return false;
}
// Associate the graph with the builder.
#ifdef DEBUG
printf("directx_camera_server::open_and_find_parameters(): Before SetFilterGraph\n");
#endif
_pBuilder->SetFiltergraph(_pGraph);
//-------------------------------------------------------------------
// Go find a video device to use: in this case, we are using the Nth
// one we find, where the number N is the "which" parameter.
// Create the system device enumerator.
#ifdef DEBUG
printf("directx_camera_server::open_and_find_parameters(): Before CoCreateInstance SystemDeviceEnum\n");
#endif
ICreateDevEnum *pDevEnum = NULL;
CoCreateInstance(CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC,
IID_ICreateDevEnum, (void **)&pDevEnum);
if (pDevEnum == NULL) {
fprintf(stderr, "directx_camera_server::open_and_find_parameters(): Can't create device enumerator\n");
return false;
}
// Create an enumerator for video capture devices.
#ifdef DEBUG
printf("directx_camera_server::open_and_find_parameters(): Before CreateClassEnumerator\n");
#endif
IEnumMoniker *pClassEnum = NULL;
pDevEnum->CreateClassEnumerator(CLSID_VideoInputDeviceCategory, &pClassEnum, 0);
if (pClassEnum == NULL) {
fprintf(stderr, "directx_camera_server::open_and_find_parameters(): Can't create video enumerator (no cameras?)\n");
pDevEnum->Release();
return false;
}
#ifdef DEBUG
printf("directx_camera_server::open_and_find_parameters(): Before Loop over enumerators\n");
#endif
ULONG cFetched;
IMoniker *pMoniker = NULL;
IBaseFilter *pSrc = NULL;
// Skip (which - 1) cameras
int i;
for (i = 0; i < which-1 ; i++) {
if (pClassEnum->Next(1, &pMoniker, &cFetched) != S_OK) {
fprintf(stderr,"directx_camera_server::open_and_find_parameters(): Can't open camera (not enough cameras)\n");
pMoniker->Release();
return false;
}
}
// Take the next camera and bind it
if (pClassEnum->Next(1, &pMoniker, &cFetched) == S_OK) {
// Bind the first moniker to a filter object.
pMoniker->BindToObject(0, 0, IID_IBaseFilter, (void**)&pSrc);
pMoniker->Release();
} else {
fprintf(stderr,"directx_camera_server::open_and_find_parameters(): Can't open camera (not enough cameras)\n");
pMoniker->Release();
return false;
}
pClassEnum->Release();
pDevEnum->Release();
//-------------------------------------------------------------------
// Construct the sample grabber callback handler that will be used
// to receive image data from the sample grabber.
if ( (_pCallback = new directx_samplegrabber_callback()) == NULL) {
fprintf(stderr,"directx_camera_server::open_and_find_parameters(): Can't create sample grabber callback handler (out of memory?)\n");
return false;
}
//-------------------------------------------------------------------
// Construct the sample grabber that will be used to snatch images from
// the video stream as they go by. Set its media type and callback.
// Create the Sample Grabber.
#ifdef DEBUG
printf("directx_camera_server::open_and_find_parameters(): Before CoCreateInstance SampleGrabber\n");
#endif
CoCreateInstance(CLSID_SampleGrabber, NULL, CLSCTX_INPROC_SERVER,
IID_IBaseFilter, reinterpret_cast<void**>(&_pSampleGrabberFilter));
if (_pSampleGrabberFilter == NULL) {
fprintf(stderr,"directx_camera_server::open_and_find_parameters(): Can't get SampleGrabber filter (not DirectX 8.1+?)\n");
return false;
}
#ifdef DEBUG
printf("directx_camera_server::open_and_find_parameters(): Before QueryInterface\n");
#endif
_pSampleGrabberFilter->QueryInterface(IID_ISampleGrabber,
reinterpret_cast<void**>(&_pGrabber));
// Set the media type to video
#ifdef DEBUG
printf("directx_camera_server::open_and_find_parameters(): Before SetMediaType\n");
#endif
AM_MEDIA_TYPE mt;
// Ask for video media producers that produce 8-bit RGB
ZeroMemory(&mt, sizeof(AM_MEDIA_TYPE));
mt.majortype = MEDIATYPE_Video; // Ask for video media producers
mt.subtype = MEDIASUBTYPE_RGB24; // Ask for 8 bit RGB
_pGrabber->SetMediaType(&mt);
//-------------------------------------------------------------------
// Ask for the video resolution that has been passed in.
// This code is based on
// intuiting that we need to use the SetFormat call on the IAMStreamConfig
// interface; this interface is described in the help pages.
// If the width and height are specified as 0, then they are not set
// in the header, letting them use whatever is the default.
if ( (width != 0) && (height != 0) ) {
_pBuilder->FindInterface(&PIN_CATEGORY_CAPTURE, &MEDIATYPE_Video, pSrc,
IID_IAMStreamConfig, (void **)&_pStreamConfig);
if (_pStreamConfig == NULL) {
fprintf(stderr,"directx_camera_server::open_and_find_parameters(): Can't get StreamConfig interface\n");
return false;
}
ZeroMemory(&mt, sizeof(AM_MEDIA_TYPE));
mt.majortype = MEDIATYPE_Video; // Ask for video media producers
mt.subtype = MEDIASUBTYPE_RGB24; // Ask for 8 bit RGB
mt.pbFormat = (BYTE*)CoTaskMemAlloc(sizeof(VIDEOINFOHEADER));
VIDEOINFOHEADER *pVideoHeader = (VIDEOINFOHEADER*)mt.pbFormat;
ZeroMemory(pVideoHeader, sizeof(VIDEOINFOHEADER));
pVideoHeader->bmiHeader.biBitCount = 24;
pVideoHeader->bmiHeader.biWidth = width;
pVideoHeader->bmiHeader.biHeight = height;
pVideoHeader->bmiHeader.biPlanes = 1;
pVideoHeader->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
pVideoHeader->bmiHeader.biSizeImage = DIBSIZE(pVideoHeader->bmiHeader);
// Set the format type and size.
mt.formattype = FORMAT_VideoInfo;
mt.cbFormat = sizeof(VIDEOINFOHEADER);
// Set the sample size.
mt.bFixedSizeSamples = TRUE;
mt.lSampleSize = DIBSIZE(pVideoHeader->bmiHeader);
// Make the call to actually set the video type to what we want.
if (_pStreamConfig->SetFormat(&mt) != S_OK) {
fprintf(stderr,"directx_camera_server::open_and_find_parameters(): Can't set resolution to %dx%d\n",
pVideoHeader->bmiHeader.biWidth, pVideoHeader->bmiHeader.biHeight);
return false;
}
// Clean up the pbFormat header memory we allocated above.
CoTaskMemFree(mt.pbFormat);
}
//-------------------------------------------------------------------
// Create a NULL renderer that will be used to discard the video frames
// on the output pin of the sample grabber
#ifdef DEBUG
printf("directx_camera_server::open_and_find_parameters(): Before CoCreateInstance NullRenderer\n");
#endif
IBaseFilter *pNull = NULL;
CoCreateInstance(CLSID_NullRenderer, NULL, CLSCTX_INPROC_SERVER,
IID_IBaseFilter, reinterpret_cast<void**>(&pNull));
//-------------------------------------------------------------------
// Build the filter graph. First add the filters and then connect them.
// pSrc is the capture filter for the video device we found above.
_pGraph->AddFilter(pSrc, L"Video Capture");
// Add the sample grabber filter
_pGraph->AddFilter(_pSampleGrabberFilter, L"SampleGrabber");
// Add the null renderer filter
_pGraph->AddFilter(pNull, L"NullRenderer");
// Connect the output of the video reader to the sample grabber input
ConnectTwoFilters(_pGraph, pSrc, _pSampleGrabberFilter);
// Connect the output of the sample grabber to the NULL renderer input
ConnectTwoFilters(_pGraph, _pSampleGrabberFilter, pNull);
//-------------------------------------------------------------------
// XXX See if this is a video tuner card by querying for that interface.
// Set it to read the video channel if it is one.
IAMTVTuner *pTuner = NULL;
hr = _pBuilder->FindInterface(NULL, NULL, pSrc, IID_IAMTVTuner, (void**)&pTuner);
if (pTuner != NULL) {
#ifdef DEBUG
printf("directx_camera_server::open_and_find_parameters(): Found a TV Tuner!\n");
#endif
//XXX Put code here.
// Set the first input pin to use the cable as input
hr = pTuner->put_InputType(0, TunerInputCable);
if (FAILED(hr)) {
fprintf(stderr,"directx_camera_server::open_and_find_parameters(): Can't set input to cable\n");
}
// Set the channel on the video to be baseband (is this channel zero?)
hr = pTuner->put_Channel(0, -1, -1);
if (FAILED(hr)) {
fprintf(stderr,"directx_camera_server::open_and_find_parameters(): Can't set channel\n");
}
pTuner->Release();
}
//-------------------------------------------------------------------
// Find _num_rows and _num_columns in the video stream.
_pGrabber->GetConnectedMediaType(&mt);
VIDEOINFOHEADER *pVih;
if (mt.formattype == FORMAT_VideoInfo) {
pVih = reinterpret_cast<VIDEOINFOHEADER*>(mt.pbFormat);
} else {
fprintf(stderr,"directx_camera_server::open_and_find_parameters(): Can't get video header type\n");
return false;
}
// Number of rows and columns. This is different if we are using a target
// rectangle (rcTarget) than if we are not.
if (IsRectEmpty(&pVih->rcTarget)) {
_num_columns = pVih->bmiHeader.biWidth;
_num_rows = pVih->bmiHeader.biHeight;
} else {
_num_columns = pVih->rcTarget.right;
_num_rows = pVih->bmiHeader.biHeight;
printf("XXX directx_camera_server::open_and_find_parameters(): Warning: may not work correctly with target rectangle\n");
}
_minX = 0;
_maxX = _num_columns - 1;
_minY = 0;
_maxY = _num_rows - 1;
#ifdef DEBUG
printf("Got %dx%d video\n", _num_columns, _num_rows);
#endif
// Make sure that the image is not compressed and that we have 8 bits
// per pixel.
if (pVih->bmiHeader.biCompression != BI_RGB) {
fprintf(stderr,"directx_camera_server::open_and_find_parameters(): Compression not RGB\n");
switch (pVih->bmiHeader.biCompression) {
case BI_RLE8:
fprintf(stderr," (It is BI_RLE8)\n");
break;
case BI_RLE4:
fprintf(stderr," (It is BI_RLE4)\n");
case BI_BITFIELDS:
fprintf(stderr," (It is BI_BITFIELDS)\n");
break;
default:
fprintf(stderr," (Unknown compression type)\n");
}
return false;
}
int BytesPerPixel = pVih->bmiHeader.biBitCount / 8;
if (BytesPerPixel != 3) {
fprintf(stderr,"directx_camera_server::open_and_find_parameters(): Not 3 bytes per pixel (%d)\n",
pVih->bmiHeader.biBitCount);
return false;
}
// A negative height indicates that the images are stored non-inverted in Y
// Not sure what to do with images that have negative height -- need to
// read the book some more to find out.
if (_num_rows < 0) {
fprintf(stderr,"directx_camera_server::open_and_find_parameters(): Num Rows is negative (internal error)\n");
return false;
}
// Find the stride to take when moving from one row of video to the
// next. This is rounded up to the nearest DWORD.
_stride = (_num_columns * BytesPerPixel + 3) & ~3;
// Set the callback, where '0' means 'use the SampleCB callback'
_pGrabber->SetCallback(_pCallback, 0);
//-------------------------------------------------------------------
// Release resources that won't be used later and return
pSrc->Release();
pNull->Release();
return true;
}