[Interest] Problem with QCameraImageCapture

[Bob Hood]

Hi, Igor.

I tested your example code using Qt 5.4.0 under Windows 7 64-bit and the 2MP 
USB camera embedded on my ASUS monitor, and I'm getting the callbacks as I 
expect.  I captured and stored to disc the preview image provided by the 
QCameraImageCapture::imageCaptured() signal.

Although I had them connected, I did not get the imageAvailable() or error() 
signal that you mention, though.  I assume I didn't get the latter signal 
because there was no error in the capture.  As for why I didn't get 
imageAvailable(), I couldn't say.


On 4/6/2015 2:40 AM, Igor Mironchik wrote:
> Hi.
>
> I've checked it on two different cameras. The problem is not gone.
>
> I'm on Windows 7 64 bit, Qt 5.4.1 from online installer.
>
>
> On Mon, 06 Apr 2015 10:20:51 +0300, Igor Mironchik
> <igor.mironchik at gmail.com> wrote:
>
>> Hi.
>>
>> I have one problem QCameraImageCapture doesn't emits signals. What is
>> the problem?
>>
>> d->camera = new QCamera(
>> AppCfg::instance().cfg().cameraName().toLatin1(),
>> 	this );
>> d->camera->setCaptureMode( QCamera::CaptureStillImage );
>> d->camera->start();
>>
>> connect( d->camera, &QCamera::locked,
>> 	this, &CameraScreen::cameraLocked );
>>
>> d->capture = new QCameraImageCapture( d->camera, this );
>> d->capture->setCaptureDestination( QCameraImageCapture::CaptureToBuffer
>> );
>>
>> connect( d->capture, &QCameraImageCapture::imageAvailable,
>> 	this, &CameraScreen::imageAvailable );
>>
>> void ( QCameraImageCapture::*signal )( int, QCameraImageCapture::Error,
>> 	const QString & ) = &QCameraImageCapture::error;
>>
>> connect( d->capture, signal,
>> 	this, &CameraScreen::error );
>>
>> d->camera->searchAndLock();
>>
>> ---------------------------------------------
>>
>> void
>> CameraScreen::cameraLocked()
>> {
>> 	d->capture->capture();
>>
>> 	d->camera->unlock();
>> }
>>
>> But I don't receive nor imageAvailable() nor error() signals...
>>
>