mirror of
https://github.com/opencv/opencv.git
synced 2024-11-30 14:29:49 +08:00
302 lines
10 KiB
C++
302 lines
10 KiB
C++
/*
|
|
// A sample program demonstrating interoperability of OpenCV cv::UMat with Direct X surface
|
|
// At first, the data obtained from video file or camera and placed onto Direct X surface,
|
|
// following mapping of this Direct X surface to OpenCV cv::UMat and call cv::Blur function.
|
|
// The result is mapped back to Direct X surface and rendered through Direct X API.
|
|
*/
|
|
|
|
#define WIN32_LEAN_AND_MEAN
|
|
#include <windows.h>
|
|
#include <d3d10.h>
|
|
|
|
#include "opencv2/core.hpp"
|
|
#include "opencv2/core/directx.hpp"
|
|
#include "opencv2/core/ocl.hpp"
|
|
#include "opencv2/imgproc.hpp"
|
|
#include "opencv2/videoio.hpp"
|
|
|
|
#include "d3dsample.hpp"
|
|
|
|
#pragma comment (lib, "d3d10.lib")
|
|
|
|
class D3D10WinApp : public D3DSample
|
|
{
|
|
public:
|
|
D3D10WinApp(int width, int height, std::string& window_name, cv::VideoCapture& cap) :
|
|
D3DSample(width, height, window_name, cap) {}
|
|
|
|
~D3D10WinApp() {}
|
|
|
|
|
|
int create(void)
|
|
{
|
|
// base initialization
|
|
D3DSample::create();
|
|
|
|
// initialize DirectX
|
|
HRESULT r;
|
|
|
|
DXGI_SWAP_CHAIN_DESC scd;
|
|
|
|
ZeroMemory(&scd, sizeof(DXGI_SWAP_CHAIN_DESC));
|
|
|
|
scd.BufferCount = 1; // one back buffer
|
|
scd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM; // use 32-bit color
|
|
scd.BufferDesc.Width = m_width; // set the back buffer width
|
|
scd.BufferDesc.Height = m_height; // set the back buffer height
|
|
scd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT; // how swap chain is to be used
|
|
scd.OutputWindow = m_hWnd; // the window to be used
|
|
scd.SampleDesc.Count = 1; // how many multisamples
|
|
scd.Windowed = TRUE; // windowed/full-screen mode
|
|
scd.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
|
|
scd.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH; // allow full-screen switching
|
|
|
|
r = ::D3D10CreateDeviceAndSwapChain(
|
|
NULL,
|
|
D3D10_DRIVER_TYPE_HARDWARE,
|
|
NULL,
|
|
0,
|
|
D3D10_SDK_VERSION,
|
|
&scd,
|
|
&m_pD3D10SwapChain,
|
|
&m_pD3D10Dev);
|
|
if (FAILED(r))
|
|
{
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
r = m_pD3D10SwapChain->GetBuffer(0, __uuidof(ID3D10Texture2D), (LPVOID*)&m_pBackBuffer);
|
|
if (FAILED(r))
|
|
{
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
r = m_pD3D10Dev->CreateRenderTargetView(m_pBackBuffer, NULL, &m_pRenderTarget);
|
|
if (FAILED(r))
|
|
{
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
m_pD3D10Dev->OMSetRenderTargets(1, &m_pRenderTarget, NULL);
|
|
|
|
D3D10_VIEWPORT viewport;
|
|
ZeroMemory(&viewport, sizeof(D3D10_VIEWPORT));
|
|
|
|
viewport.Width = m_width;
|
|
viewport.Height = m_height;
|
|
viewport.MinDepth = 0.0f;
|
|
viewport.MaxDepth = 0.0f;
|
|
|
|
m_pD3D10Dev->RSSetViewports(1, &viewport);
|
|
|
|
D3D10_TEXTURE2D_DESC desc = { 0 };
|
|
|
|
desc.Width = m_width;
|
|
desc.Height = m_height;
|
|
desc.MipLevels = 1;
|
|
desc.ArraySize = 1;
|
|
desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
|
|
desc.SampleDesc.Count = 1;
|
|
desc.BindFlags = D3D10_BIND_SHADER_RESOURCE;
|
|
desc.Usage = D3D10_USAGE_DYNAMIC;
|
|
desc.CPUAccessFlags = D3D10_CPU_ACCESS_WRITE;
|
|
|
|
r = m_pD3D10Dev->CreateTexture2D(&desc, NULL, &m_pSurface);
|
|
if (FAILED(r))
|
|
{
|
|
std::cerr << "Can't create texture with input image" << std::endl;
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
// initialize OpenCL context of OpenCV lib from DirectX
|
|
if (cv::ocl::haveOpenCL())
|
|
{
|
|
m_oclCtx = cv::directx::ocl::initializeContextFromD3D10Device(m_pD3D10Dev);
|
|
}
|
|
|
|
m_oclDevName = cv::ocl::useOpenCL() ?
|
|
cv::ocl::Context::getDefault().device(0).name() :
|
|
"No OpenCL device";
|
|
|
|
return EXIT_SUCCESS;
|
|
} // create()
|
|
|
|
|
|
// get media data on DX surface for further processing
|
|
int get_surface(ID3D10Texture2D** ppSurface)
|
|
{
|
|
HRESULT r;
|
|
|
|
if (!m_cap.read(m_frame_bgr))
|
|
return EXIT_FAILURE;
|
|
|
|
cv::cvtColor(m_frame_bgr, m_frame_rgba, cv::COLOR_BGR2RGBA);
|
|
|
|
UINT subResource = ::D3D10CalcSubresource(0, 0, 1);
|
|
|
|
D3D10_MAPPED_TEXTURE2D mappedTex;
|
|
r = m_pSurface->Map(subResource, D3D10_MAP_WRITE_DISCARD, 0, &mappedTex);
|
|
if (FAILED(r))
|
|
{
|
|
return r;
|
|
}
|
|
|
|
cv::Mat m(m_height, m_width, CV_8UC4, mappedTex.pData, (int)mappedTex.RowPitch);
|
|
// copy video frame data to surface
|
|
m_frame_rgba.copyTo(m);
|
|
|
|
m_pSurface->Unmap(subResource);
|
|
|
|
*ppSurface = m_pSurface;
|
|
|
|
return EXIT_SUCCESS;
|
|
} // get_surface()
|
|
|
|
|
|
// process and render media data
|
|
int render()
|
|
{
|
|
try
|
|
{
|
|
if (m_shutdown)
|
|
return EXIT_SUCCESS;
|
|
|
|
// capture user input once
|
|
MODE mode = (m_mode == MODE_GPU_NV12) ? MODE_GPU_RGBA : m_mode;
|
|
|
|
HRESULT r;
|
|
ID3D10Texture2D* pSurface;
|
|
|
|
r = get_surface(&pSurface);
|
|
if (FAILED(r))
|
|
{
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
m_timer.reset();
|
|
m_timer.start();
|
|
|
|
switch (mode)
|
|
{
|
|
case MODE_CPU:
|
|
{
|
|
// process video frame on CPU
|
|
UINT subResource = ::D3D10CalcSubresource(0, 0, 1);
|
|
|
|
D3D10_MAPPED_TEXTURE2D mappedTex;
|
|
r = pSurface->Map(subResource, D3D10_MAP_WRITE_DISCARD, 0, &mappedTex);
|
|
if (FAILED(r))
|
|
{
|
|
return r;
|
|
}
|
|
|
|
cv::Mat m(m_height, m_width, CV_8UC4, mappedTex.pData, (int)mappedTex.RowPitch);
|
|
|
|
if (m_demo_processing)
|
|
{
|
|
// blur D3D10 surface with OpenCV on CPU
|
|
cv::blur(m, m, cv::Size(15, 15));
|
|
}
|
|
|
|
m_timer.stop();
|
|
|
|
cv::String strMode = cv::format("mode: %s", m_modeStr[MODE_CPU].c_str());
|
|
cv::String strProcessing = m_demo_processing ? "blur frame" : "copy frame";
|
|
cv::String strTime = cv::format("time: %4.3f msec", m_timer.getTimeMilli());
|
|
cv::String strDevName = cv::format("OpenCL device: %s", m_oclDevName.c_str());
|
|
|
|
cv::putText(m, strMode, cv::Point(0, 20), cv::FONT_HERSHEY_SIMPLEX, 0.8, cv::Scalar(0, 0, 200), 2);
|
|
cv::putText(m, strProcessing, cv::Point(0, 40), cv::FONT_HERSHEY_SIMPLEX, 0.8, cv::Scalar(0, 0, 200), 2);
|
|
cv::putText(m, strTime, cv::Point(0, 60), cv::FONT_HERSHEY_SIMPLEX, 0.8, cv::Scalar(0, 0, 200), 2);
|
|
cv::putText(m, strDevName, cv::Point(0, 80), cv::FONT_HERSHEY_SIMPLEX, 0.8, cv::Scalar(0, 0, 200), 2);
|
|
|
|
pSurface->Unmap(subResource);
|
|
|
|
break;
|
|
}
|
|
|
|
case MODE_GPU_RGBA:
|
|
{
|
|
// process video frame on GPU
|
|
cv::UMat u;
|
|
|
|
cv::directx::convertFromD3D10Texture2D(pSurface, u);
|
|
|
|
if (m_demo_processing)
|
|
{
|
|
// blur D3D10 surface with OpenCV on GPU with OpenCL
|
|
cv::blur(u, u, cv::Size(15, 15));
|
|
}
|
|
|
|
m_timer.stop();
|
|
|
|
cv::String strMode = cv::format("mode: %s", m_modeStr[MODE_GPU_RGBA].c_str());
|
|
cv::String strProcessing = m_demo_processing ? "blur frame" : "copy frame";
|
|
cv::String strTime = cv::format("time: %4.3f msec", m_timer.getTimeMilli());
|
|
cv::String strDevName = cv::format("OpenCL device: %s", m_oclDevName.c_str());
|
|
|
|
cv::putText(u, strMode, cv::Point(0, 20), cv::FONT_HERSHEY_SIMPLEX, 0.8, cv::Scalar(0, 0, 200), 2);
|
|
cv::putText(u, strProcessing, cv::Point(0, 40), cv::FONT_HERSHEY_SIMPLEX, 0.8, cv::Scalar(0, 0, 200), 2);
|
|
cv::putText(u, strTime, cv::Point(0, 60), cv::FONT_HERSHEY_SIMPLEX, 0.8, cv::Scalar(0, 0, 200), 2);
|
|
cv::putText(u, strDevName, cv::Point(0, 80), cv::FONT_HERSHEY_SIMPLEX, 0.8, cv::Scalar(0, 0, 200), 2);
|
|
|
|
cv::directx::convertToD3D10Texture2D(u, pSurface);
|
|
|
|
break;
|
|
}
|
|
|
|
} // switch
|
|
|
|
// traditional DX render pipeline:
|
|
// BitBlt surface to backBuffer and flip backBuffer to frontBuffer
|
|
m_pD3D10Dev->CopyResource(m_pBackBuffer, pSurface);
|
|
|
|
// present the back buffer contents to the display
|
|
// switch the back buffer and the front buffer
|
|
r = m_pD3D10SwapChain->Present(0, 0);
|
|
if (FAILED(r))
|
|
{
|
|
return EXIT_FAILURE;
|
|
}
|
|
} // try
|
|
|
|
catch (const cv::Exception& e)
|
|
{
|
|
std::cerr << "Exception: " << e.what() << std::endl;
|
|
return 10;
|
|
}
|
|
|
|
return EXIT_SUCCESS;
|
|
} // render()
|
|
|
|
|
|
int cleanup(void)
|
|
{
|
|
SAFE_RELEASE(m_pSurface);
|
|
SAFE_RELEASE(m_pBackBuffer);
|
|
SAFE_RELEASE(m_pD3D10SwapChain);
|
|
SAFE_RELEASE(m_pRenderTarget);
|
|
SAFE_RELEASE(m_pD3D10Dev);
|
|
D3DSample::cleanup();
|
|
return EXIT_SUCCESS;
|
|
} // cleanup()
|
|
|
|
private:
|
|
ID3D10Device* m_pD3D10Dev;
|
|
IDXGISwapChain* m_pD3D10SwapChain;
|
|
ID3D10Texture2D* m_pBackBuffer;
|
|
ID3D10Texture2D* m_pSurface;
|
|
ID3D10RenderTargetView* m_pRenderTarget;
|
|
cv::ocl::Context m_oclCtx;
|
|
cv::String m_oclPlatformName;
|
|
cv::String m_oclDevName;
|
|
};
|
|
|
|
|
|
// main func
|
|
int main(int argc, char** argv)
|
|
{
|
|
std::string title = "D3D10 interop sample";
|
|
return d3d_app<D3D10WinApp>(argc, argv, title);
|
|
}
|