123 lines
3.5 KiB
C++
123 lines
3.5 KiB
C++
|
//
|
|||
|
|
// MainPage.xaml.cpp
|
|||
|
|
// Implementation of the MainPage class.
|
|||
|
|
//
|
|||
|
|
|
|||
|
|
#include "pch.h"
|
|||
|
|
#include "MainPage.xaml.h"
|
|||
|
|
|
|||
|
|
#include <opencv2\imgproc\types_c.h>
|
|||
|
|
#include <opencv2\core.hpp>
|
|||
|
|
#include <opencv2\imgproc.hpp>
|
|||
|
|
#include <Robuffer.h>
|
|||
|
|
#include <ppl.h>
|
|||
|
|
#include <ppltasks.h>
|
|||
|
|
|
|||
|
|
using namespace PhoneTutorial;
|
|||
|
|
using namespace Platform;
|
|||
|
|
using namespace Windows::Foundation;
|
|||
|
|
using namespace Windows::Foundation::Collections;
|
|||
|
|
using namespace Windows::UI::Xaml;
|
|||
|
|
using namespace Windows::UI::Xaml::Controls;
|
|||
|
|
using namespace Windows::UI::Xaml::Controls::Primitives;
|
|||
|
|
using namespace Windows::UI::Xaml::Data;
|
|||
|
|
using namespace Windows::UI::Xaml::Input;
|
|||
|
|
using namespace Windows::UI::Xaml::Media;
|
|||
|
|
using namespace Windows::UI::Xaml::Navigation;
|
|||
|
|
using namespace Windows::UI::Xaml::Media::Imaging;
|
|||
|
|
using namespace Windows::Storage::Streams;
|
|||
|
|
using namespace Microsoft::WRL;
|
|||
|
|
using namespace Windows::ApplicationModel;
|
|||
|
|
|
|||
|
|
MainPage::MainPage()
|
|||
|
|
{
|
|||
|
|
InitializeComponent();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Invoked when this page is about to be displayed in a Frame.
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="e">Event data that describes how this page was reached. The Parameter
|
|||
|
|
/// property is typically used to configure the page.</param>
|
|||
|
|
void MainPage::OnNavigatedTo(NavigationEventArgs^ e)
|
|||
|
|
{
|
|||
|
|
(void) e; // Unused parameter
|
|||
|
|
LoadImage();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
inline void ThrowIfFailed(HRESULT hr)
|
|||
|
|
{
|
|||
|
|
if (FAILED(hr))
|
|||
|
|
{
|
|||
|
|
throw Exception::CreateException(hr);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
byte* GetPointerToPixelData(IBuffer^ buffer)
|
|||
|
|
{
|
|||
|
|
// Cast to Object^, then to its underlying IInspectable interface.
|
|||
|
|
Object^ obj = buffer;
|
|||
|
|
ComPtr<IInspectable> insp(reinterpret_cast<IInspectable*>(obj));
|
|||
|
|
|
|||
|
|
// Query the IBufferByteAccess interface.
|
|||
|
|
ComPtr<IBufferByteAccess> bufferByteAccess;
|
|||
|
|
ThrowIfFailed(insp.As(&bufferByteAccess));
|
|||
|
|
|
|||
|
|
// Retrieve the buffer data.
|
|||
|
|
byte* pixels = nullptr;
|
|||
|
|
ThrowIfFailed(bufferByteAccess->Buffer(&pixels));
|
|||
|
|
return pixels;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
void PhoneTutorial::MainPage::Process_Click(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e)
|
|||
|
|
{
|
|||
|
|
(void) e; // Unused parameter
|
|||
|
|
|
|||
|
|
// get the pixels from the WriteableBitmap
|
|||
|
|
byte* pPixels = GetPointerToPixelData(m_bitmap->PixelBuffer);
|
|||
|
|
int height = m_bitmap->PixelHeight;
|
|||
|
|
int width = m_bitmap->PixelWidth;
|
|||
|
|
|
|||
|
|
// create a matrix the size and type of the image
|
|||
|
|
cv::Mat mat(width, height, CV_8UC4);
|
|||
|
|
memcpy(mat.data, pPixels, 4 * height*width);
|
|||
|
|
|
|||
|
|
// convert to grayscale
|
|||
|
|
cv::Mat intermediateMat;
|
|||
|
|
cv::cvtColor(mat, intermediateMat, COLOR_RGB2GRAY);
|
|||
|
|
|
|||
|
|
// convert to BGRA
|
|||
|
|
cv::cvtColor(intermediateMat, mat, COLOR_GRAY2BGRA);
|
|||
|
|
|
|||
|
|
// copy processed image back to the WriteableBitmap
|
|||
|
|
memcpy(pPixels, mat.data, 4 * height*width);
|
|||
|
|
|
|||
|
|
// update the WriteableBitmap
|
|||
|
|
m_bitmap->Invalidate();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
void PhoneTutorial::MainPage::LoadImage()
|
|||
|
|
{
|
|||
|
|
Concurrency::task<Windows::Storage::StorageFile^> getFileTask(Package::Current->InstalledLocation->GetFileAsync(L"Lena.png"));
|
|||
|
|
|
|||
|
|
auto getStreamTask = getFileTask.then(
|
|||
|
|
[](Windows::Storage::StorageFile ^storageFile)
|
|||
|
|
{
|
|||
|
|
return storageFile->OpenReadAsync();
|
|||
|
|
});
|
|||
|
|
|
|||
|
|
getStreamTask.then(
|
|||
|
|
[this](Windows::Storage::Streams::IRandomAccessStreamWithContentType^ stream)
|
|||
|
|
{
|
|||
|
|
m_bitmap = ref new Windows::UI::Xaml::Media::Imaging::WriteableBitmap(1, 1);
|
|||
|
|
m_bitmap->SetSource(stream);
|
|||
|
|
image->Source = m_bitmap;
|
|||
|
|
});
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
void PhoneTutorial::MainPage::Reset_Click(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e)
|
|||
|
|
{
|
|||
|
|
(void) e; // Unused parameter
|
|||
|
|
LoadImage();
|
|||
|
|
}
|