#include "stdafx.h"
#include "D3DDisplay.h"
#include "DEFINE.h"
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
struct CUSTOMVERTEX//顶点缓存
{     float x,y,z,rhw;  //顶点坐标 DWORD color;     //顶点颜色float tu,tv;      //纹理坐标
};
#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZRHW | D3DFVF_DIFFUSE | D3DFVF_TEX1)
//
// Construction/Destruction
//
CD3DDisplay::CD3DDisplay()
{m_pd3dDevice = NULL;m_pD3D = NULL;m_p2Dfont = NULL;m_pTexturesvideo = NULL;m_pVBvideo = NULL;m_pTexturesbmp = NULL;m_pVBbmp = NULL;m_hWnd = NULL;m_Format = (D3DFORMAT)0;
}
CD3DDisplay::~CD3DDisplay()
{ClearD3D();
}
HRESULT CD3DDisplay::InitD3D(HWND hWnd)//初始化d3d
{D3DPRESENT_PARAMETERS d3dpp;//显示参数设置if(hWnd == NULL)return -1;m_hWnd = hWnd;//D3DFMT_A8R8G8B8表示一个32位像素，从左开始，8位为ALPHA通道，8位分配给红色，8位分配给绿色，8位分配给蓝色m_Format = D3DFMT_A8R8G8B8;if(NULL == (m_pD3D = Direct3DCreate9( D3D_SDK_VERSION )))//创建d3d对象return -1;ZeroMemory( &d3dpp, sizeof(d3dpp) );//清空显示参数，重新设置参数d3dpp.Windowed = TRUE;//FALSE，表示要渲染全屏，如果为TRUE，表示要渲染窗口d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;//交换缓冲支持的效果类型，指定表面在交换链中D是如何被交换的//D3DSWAPEFFECT_DISCARD，则后备缓冲区的东西被复制到屏幕上后,后备缓冲区的东西就没有什么用可以丢弃d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;//后备缓冲的格式D3DFMT_UNKNOWN，这时候它将使用桌面的格式d3dpp.EnableAutoDepthStencil = TRUE;//如果要使用缓冲或模板缓冲则把它设为TRUEd3dpp.AutoDepthStencilFormat = D3DFMT_D16;//如果启动了深度缓冲那么这个参数将为深度设定缓冲格式//D3DFMT_16深度缓冲d3dpp.BackBufferWidth = IMAGE_WIDTH;//后备缓冲的宽度和高度d3dpp.BackBufferHeight = IMAGE_HEIGHT;//在全屏模式下这两者的值必需符合显卡所支持的分辨率if( FAILED( m_pD3D->CreateDevice( D3DADAPTER_DEFAULT,D3DDEVTYPE_HAL, m_hWnd,D3DCREATE_SOFTWARE_VERTEXPROCESSING | D3DCREATE_MULTITHREADED,&d3dpp, &m_pd3dDevice ) ) )//创建d3d设备return -1;return 0;
}
void CD3DDisplay::ClearD3D()//释放d3d
{if(m_pd3dDevice != NULL)m_pd3dDevice->Release();if(m_pD3D != NULL)m_pD3D->Release(); if(m_p2Dfont != NULL)m_p2Dfont->Release(); if(m_pVBvideo != NULL)m_pVBvideo->Release();if(m_pTexturesvideo != NULL)m_pTexturesvideo->Release();if(m_pVBbmp != NULL)m_pVBbmp->Release(); if(m_pTexturesbmp != NULL)m_pTexturesbmp->Release(); m_hWnd = NULL;m_Format = (D3DFORMAT)0;
}
HRESULT CD3DDisplay::CreateTexture()//创建纹理
{HRESULT hr = 0;D3DSURFACE_DESC ddsd;hr = m_pd3dDevice->CreateTexture( IMAGE_WIDTH, IMAGE_HEIGHT, 1, 0, m_Format, D3DPOOL_MANAGED, &m_pTexturesvideo, NULL);if( FAILED(hr)){return -1;}
hr = m_pTexturesvideo->GetLevelDesc( 0, &ddsd );//获得加载图片的宽和高及些信息if(FAILED(hr))return -1;if ((ddsd.Format != D3DFMT_A8R8G8B8) && (ddsd.Format != D3DFMT_YUY2)) return -1;return 0;
}
HRESULT CD3DDisplay::InitGeometry()//创建视频几何建立顶点缓存并初始化纹坐标
{HRESULT hr = 0;CUSTOMVERTEX* pVertices = NULL;RECT rect;//创建视频矩形rect.top = 0;           rect.left = 0;rect.right = IMAGE_WIDTH;rect.bottom = IMAGE_HEIGHT;CUSTOMVERTEX vertices[4] =  //顶点缓存{     // x, y, z, rhw, color{ (float)rect.left, (float)rect.top, 0.0f, 1.0f,    D3DCOLOR_XRGB(255,255,255), 0.0f, 0.0f }, { (float)rect.right, (float)rect.top, 0.0f, 1.0f, D3DCOLOR_XRGB(255,255,255), 1.0f, 0.0f }, { (float)rect.left, (float)rect.bottom, 0.0f, 1.0f, D3DCOLOR_XRGB(255,255,255), 0.0f, 1.0f }, { (float)rect.right, (float)rect.bottom, 0.0f, 1.0f, D3DCOLOR_XRGB(255,255,255), 1.0f, 1.0f }};m_pd3dDevice->CreateVertexBuffer(sizeof(vertices), //指定缓冲区的大小0, //指定顶点缓冲区的属性D3DFVF_CUSTOMVERTEX, //开始创建的定点格式D3DPOOL_DEFAULT, //指定顶点缓冲区的内存类型&m_pVBvideo, //视频矩形的顶点缓存区接口指针NULL ); //保留参数
m_pVBvideo->Lock( 0, sizeof(vertices), (void**)&pVertices, 0 ); //填充顶点缓冲区memcpy( pVertices, vertices, sizeof(vertices)); m_pVBvideo->Unlock();    return hr;
}
HRESULT CD3DDisplay::RenderSample(BYTE *pSampleBuffer)
{HRESULT hr = 0;BYTE * pTextureBuffer = NULL;D3DLOCKED_RECT d3dlr;LONG  lTexturePitch;     hr = m_pTexturesvideo->LockRect( 0, &d3dlr, 0, 0 );if( FAILED(hr)){return -1;}lTexturePitch = d3dlr.Pitch;pTextureBuffer = static_cast<byte *>(d3dlr.pBits);for(int i = 0; i < IMAGE_HEIGHT; i++ ) {BYTE *pBmpBufferOld = pSampleBuffer;BYTE *pTxtBufferOld = pTextureBuffer;   for (int j = 0; j < IMAGE_WIDTH; j++) {pTextureBuffer[0] = pSampleBuffer[0];pTextureBuffer[1] = pSampleBuffer[1];pTextureBuffer[2] = pSampleBuffer[2];pTextureBuffer[3] = 0xFF;pTextureBuffer += 4;pSampleBuffer  += 3;}pSampleBuffer  = pBmpBufferOld + IMAGE_WIDTH *3;pTextureBuffer = pTxtBufferOld + lTexturePitch;}hr = m_pTexturesvideo->UnlockRect(0);if( FAILED(hr)){return -1;}return 0;
}
HRESULT CD3DDisplay::RenderTOSrceen()//传递到屏幕
{HRESULT hr = 0;hr = m_pd3dDevice->Clear( 0, NULL, D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER, D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0 );if( FAILED(hr)){return -1;}hr = m_pd3dDevice->BeginScene();if( FAILED(hr)){return -1;}//显示视频hr = m_pd3dDevice->SetTexture( 0, m_pTexturesvideo );m_pd3dDevice->SetStreamSource( 0, m_pVBvideo, 0, sizeof(CUSTOMVERTEX)); hr = m_pd3dDevice->SetVertexShader( NULL );//设置可编程渲染管道的Shader程序m_pd3dDevice->SetFVF( D3DFVF_CUSTOMVERTEX ); //设置固定渲染管道Ì的顶点格式m_pd3dDevice->DrawPrimitive( D3DPT_TRIANGLESTRIP, 0, 2 );//渲染一组非索引m_pd3dDevice->SetTexture( 0, NULL ); m_pd3dDevice->EndScene();m_pd3dDevice->Present( NULL, NULL, NULL, NULL );return hr;
}
int CD3DDisplay::GetFormt()
{return D3D_ARGB32;
}

2.3.6.8  按钮点击事件函数

双击你自己创建的用于播放YUV视频的窗体上的那四个按钮，进入单击事件代码区，然后分别写入相应代码。

首先在myplayerDlg.h中加入头文件声明#include "PlayControl.h"，在类中加上

private:CPlayControl m_PlayControl;

双击“打开文件”按钮后写入代码：

void CmyplayerDlg::OnBnClickedButton1()
{// TODO: 在此添加控件通知处理程序代码CString file_name = "";CFileDialog fd(TRUE,  NULL, file_name, OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT | OFN_NOCHANGEDIR, NULL, NULL);if (fd.DoModal() == IDOK) {m_PlayControl.Init(::GetDlgItem(GetSafeHwnd(),IDC_VIDEO), fd.GetPathName().GetBuffer(fd.GetPathName().GetLength()));m_PlayControl.PostThreadMessage(WM_MANAGE, 0, 0);}
}

双击“播放”按钮后写入代码：

void CmyplayerDlg::OnBnClickedButton2()
{// TODO: 在此添加控件通知处理程序代码m_PlayControl.Play();
}

双击“暂停”按钮后写入代码：

void CmyplayerDlg::OnBnClickedButton3()
{// TODO: 在此添加控件通知处理程序代码m_PlayControl.Pause();
}
双击“停止”按钮后写入代码：
void CmyplayerDlg::OnBnClickedButton4()
{// TODO: 在此添加控件通知处理程序代码m_PlayControl.Stop();
}

3.程序内部运行过程

运行时，初始化播放界面，操作人员点击“打开文件”按钮，选择自己要播放的YUV格式视频文件，点击一下这个视频文件，程序会先用PlayControl类的对象调用PlayControl.cpp中Init（）函数来创建D3D设备（创建D3D设备调用D3DDisplay类），然后PlayControl类的对象传递消息触发消息响应函数PlayControl.cpp中的OnManage（）函数，OnManage（）函数中使用ColourSpaceConvert类的对象调用ColourSpaceConvert.cpp中的YUV2RGB（）函数将YUV视频转换为RGB格式，然后D3D设备调用D3DDisplay.cpp中的RenderSample（）函数和RenderToScreen（）函数对视频渲染并在屏幕上显示。

4.注意事项

4.1在DEFINE.h文件中

#define IMAGE_WIDTH            352 //分辨率

#define IMAGE_HEIGHT            288//分辨率

这两句是设置分辨率的，可以更改为自己YUV视频的分辨率来正确播放视频。

4.2字符集错误

若出现不能将参数2 从“wchar_t *”转换为“char *”的错误,右击项目名选择“属性”，按下图红色区域把字符集改为“使用多字节字符集”。