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* Copyright 2017-2024 NVIDIA Corporation. All rights reserved.
*
* Please refer to the NVIDIA end user license agreement (EULA) associated
* with this source code for terms and conditions that govern your use of
* this software. Any use, reproduction, disclosure, or distribution of
* this software and related documentation outside the terms of the EULA
* is strictly prohibited.
*
*/
#pragma once
#include <iostream>
#include <mutex>
#include <thread>
#include <d3d9.h>
#include <cuda.h>
#include <cudaD3D9.h>
#include "FramePresenterD3D.h"
#include "../Utils/NvCodecUtils.h"
/**
* @brief D3D9 presenter class derived from FramePresenterD3D
*/
class FramePresenterD3D9 : public FramePresenterD3D
{
public:
/**
* @brief FramePresenterD3D9 constructor. This will launch a rendering thread which will be fed with decoded frames
* @param cuContext - CUDA context handle
* @param nWidth - Width of D3D surface
* @param nHeight - Height of D3D surface
*/
FramePresenterD3D9(CUcontext cuContext, int nWidth, int nHeight) :
FramePresenterD3D(cuContext, nWidth, nHeight)
{
pthMsgLoop = new std::thread(ThreadProc, this);
while (!bReady) {
std::this_thread::sleep_for(std::chrono::milliseconds(1));
}
hTimerQueue = CreateTimerQueue();
hPresentEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
}
/**
* @brief FramePresenterD3D9 destructor.
*/
~FramePresenterD3D9() {
if (hTimerQueue)
{
DeleteTimerQueue(hTimerQueue);
}
if (hPresentEvent)
{
CloseHandle(hPresentEvent);
}
bQuit = true;
pthMsgLoop->join();
delete pthMsgLoop;
}
/**
* @brief Presents a frame present in host memory. More specifically, it copies the host surface
* data to a d3d offscreenplain surface and then copies it to the swap chain backbuffer for presentation
* @param pData - pointer to host surface data
* @param nBytes - number of bytes to copy
* @return true on success
* @return false when the windowing thread is not ready to be served
*/
bool PresentHostFrame(BYTE *pData, int nBytes) {
mtx.lock();
if (!bReady) {
mtx.unlock();
return false;
}
D3DLOCKED_RECT lockedRect;
ck(pSurface->LockRect(&lockedRect, NULL, 0));
for (int y = 0; y < nHeight; y++) {
memcpy((uint8_t *)lockedRect.pBits + y * lockedRect.Pitch, pData + y * nWidth * 4, nWidth * 4);
}
ck(pSurface->UnlockRect());
pDevice->UpdateSurface(pSurface, NULL, pBackBuffer, NULL);
mtx.unlock();
return true;
}
bool PresentDeviceFrame(unsigned char *dpBgra, int nPitch, int64_t delay) {
mtx.lock();
if (!bReady) {
mtx.unlock();
return false;
}
CopyDeviceFrame(dpBgra, nPitch);
if (!CreateTimerQueueTimer(&hTimer, hTimerQueue,
(WAITORTIMERCALLBACK)PresentRoutine, this, (DWORD)delay, 0, 0))
{
std::cout << "Problem in createtimer" << std::endl;
}
while (WaitForSingleObject(hPresentEvent, 0) != WAIT_OBJECT_0)
{
}
if (hTimer)
{
DeleteTimerQueueTimer(hTimerQueue, hTimer, nullptr);
}
mtx.unlock();
return true;
}
private:
/**
* @brief Launches the windowing functionality
* @param This - pointer to FramePresenterD3D9 object
*/
static void ThreadProc(FramePresenterD3D9 *This) {
This->Run();
}
/**
* @brief Callback called by D3D runtime. This callback is registered during call to
* CreateTimerQueueTimer in PresentDeviceFrame. In CreateTimerQueueTimer we also
* set a timer. When this timer expires this callback is called. This functionality
* is present to facilitate timestamp based presentation.
* @param lpParam - void pointer to client data
* @param TimerOrWaitFired - TRUE for this callback as this is a Timer based callback (Refer:https://docs.microsoft.com/en-us/previous-versions/windows/desktop/legacy/ms687066(v=vs.85))
*/
static VOID CALLBACK PresentRoutine(PVOID lpParam, BOOLEAN TimerOrWaitFired)
{
if (!lpParam) return;
FramePresenterD3D9* presenter = (FramePresenterD3D9 *)lpParam;
ck(presenter->pDevice->Present(NULL, NULL, NULL, NULL));
SetEvent(presenter->hPresentEvent);
}
/**
* @brief This function is on a thread spawned during FramePresenterD3D9 construction.
* It creates the D3D window and monitors window messages in a loop. This function
* also creates swap chain for presentation and also registers the swap chain backbuffer
* with cuda.
*/
void Run() {
HWND hwndMain = CreateAndShowWindow(nWidth, nHeight);
IDirect3D9Ex* pD3D = NULL;
ck(Direct3DCreate9Ex(D3D_SDK_VERSION, &pD3D));
D3DPRESENT_PARAMETERS d3dpp = { 0 };
d3dpp.BackBufferWidth = nWidth;
d3dpp.BackBufferHeight = nHeight;
d3dpp.BackBufferFormat = D3DFMT_A8R8G8B8;
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
d3dpp.EnableAutoDepthStencil = FALSE;
d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
d3dpp.FullScreen_RefreshRateInHz = D3DPRESENT_RATE_DEFAULT;
d3dpp.Windowed = TRUE;
d3dpp.hDeviceWindow = hwndMain;
ck(pD3D->CreateDevice(GetAdapterByContext(cuContext), D3DDEVTYPE_HAL, NULL, D3DCREATE_HARDWARE_VERTEXPROCESSING, &d3dpp, &pDevice));
pD3D->Release();
ck(pDevice->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &pBackBuffer));
ck(pDevice->CreateOffscreenPlainSurface(nWidth, nHeight, D3DFMT_A8R8G8B8, D3DPOOL_SYSTEMMEM, &pSurface, NULL));
ck(cuCtxPushCurrent(cuContext));
ck(cuGraphicsD3D9RegisterResource(&cuResource, pBackBuffer, CU_GRAPHICS_REGISTER_FLAGS_NONE));
ck(cuGraphicsResourceSetMapFlags(cuResource, CU_GRAPHICS_MAP_RESOURCE_FLAGS_WRITE_DISCARD));
ck(cuCtxPopCurrent(NULL));
bReady = true;
MSG msg = { 0 };
while (!bQuit && msg.message != WM_QUIT) {
if (PeekMessage(&msg, 0, 0, 0, PM_REMOVE)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
mtx.lock();
bReady = false;
ck(cuCtxPushCurrent(cuContext));
ck(cuGraphicsUnregisterResource(cuResource));
ck(cuCtxPopCurrent(NULL));
pSurface->Release();
pBackBuffer->Release();
pDevice->Release();
DestroyWindow(hwndMain);
mtx.unlock();
}
/**
* @brief Gets the D3D9 adapter ID on which the given cuda context is current
* @param CUcontext - handle to cuda context
* @return pAdapter - pointer to DXGI adapter
* @return NULL - In case there is no adapter corresponding to the supplied cuda context
*/
static UINT GetAdapterByContext(CUcontext cuContext) {
CUdevice cuDeviceTarget;
ck(cuCtxPushCurrent(cuContext));
ck(cuCtxGetDevice(&cuDeviceTarget));
ck(cuCtxPopCurrent(NULL));
IDirect3D9Ex* pD3D = NULL;
ck(Direct3DCreate9Ex(D3D_SDK_VERSION, &pD3D));
for (unsigned i = 0; i < pD3D->GetAdapterCount(); i++) {
D3DADAPTER_IDENTIFIER9 identifier;
pD3D->GetAdapterIdentifier(i, 0, &identifier);
CUdevice cuDevice;
ck(cuD3D9GetDevice(&cuDevice, identifier.DeviceName));
if (cuDevice == cuDeviceTarget) {
return i;
}
}
pD3D->Release();
return NULL;
}
private:
bool bReady = false;
bool bQuit = false;
std::mutex mtx;
std::thread *pthMsgLoop = NULL;
IDirect3DDevice9 *pDevice = NULL;
IDirect3DSurface9 *pBackBuffer = NULL, *pSurface = NULL;
HANDLE hTimer;
HANDLE hTimerQueue;
HANDLE hPresentEvent;
};
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