使用DirectDraw显示YUV视频

本文主要是介绍使用DirectDraw显示YUV视频，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

原文出处： http://hi.baidu.com/sdlyfdy/blog/item/06e3c70cc0e57cec36d12297.html/cmtid/fa88294c57129204b2de0552

#ifndef _DDRAWDISP_H
#define _DDRAWDISP_H

#include <ddraw.h>

class CDDrawDisplay
{
public:
BOOL DDrawDispInit(HWND hWnd, int src_width, int src_height, int dst_width, int dst_height);
void DDrawDispReinit(HWND hWnd, int src_width, int src_height, int dst_width, int dst_height);
void DDrawDispDone();
void DDrawUpdateDisp(unsigned char *src[3], int stride[3]);

~CDDrawDisplay();

protected:

protected:
int m_src_width;
int m_src_height;
int m_dst_top;
int m_dst_left;
int m_dst_width;
int m_dst_height;

HWND m_hWnd;
LPDIRECTDRAW            m_lpDD;   // DirectDraw 对象指针
LPDIRECTDRAWSURFACE     m_lpDDSPrimary; // DirectDraw 主表面指针
LPDIRECTDRAWSURFACE     m_lpDDSOverlay; // DirectDraw 离屏表面指针

};

#endif

#include <windows.h>
#include "DDrawDisp.h"

#pragma comment(lib,"ddraw.lib")

static DDPIXELFORMAT ddpfOverlayFormats[] = {
    {sizeof(DDPIXELFORMAT), DDPF_FOURCC, MAKEFOURCC('Y','V','1','2'),0,0,0,0,0}, // YV12
    {sizeof(DDPIXELFORMAT), DDPF_FOURCC, MAKEFOURCC('U','Y','V','Y'),0,0,0,0,0}, // UYVY
    //{sizeof(DDPIXELFORMAT), DDPF_RGB, 0, 16, 0x7C00, 0x03e0, 0x001F, 0},  
     // 16-bit RGB 5:5:5
    //{sizeof(DDPIXELFORMAT), DDPF_RGB, 0, 16, 0xF800, 0x07e0, 0x001F, 0}   
     // 16-bit RGB 5:6:5
};

#define PF_TABLE_SIZE (sizeof(ddpfOverlayFormats) / sizeof(ddpfOverlayFormats[
0]))

BOOL CDDrawDisplay::DDrawDispInit(HWND hWnd, int src_width, int src_height,

     int dst_width, int dst_height)
{
RECT rect;

GetClientRect(hWnd, &rect);
// rect.right = GetSystemMetrics(SM_CXSCREEN);
// rect.bottom = GetSystemMetrics(SM_CYSCREEN);

m_src_width = src_width;
m_src_height = src_height;
m_hWnd = hWnd;

if (dst_width > rect.right)
dst_width = rect.right;
if (dst_height > rect.bottom)
dst_height = rect.bottom;

if (dst_width == -1) // Full Screen
{
if (rect.right*src_height/src_width > rect.bottom)
{
   dst_height = rect.bottom;
   dst_width = rect.bottom * src_width / src_height;
}
else
{
   dst_width = rect.right;
   dst_height = rect.right * src_height / src_width;
}
}

m_dst_left = (rect.right-dst_width)/2;
m_dst_top = (rect.bottom-dst_height)/2;
m_dst_width = dst_width;
m_dst_height = dst_height;

// 创建DirectCraw对象
if ( DirectDrawCreate(NULL, &m_lpDD, NULL) != DD_OK )
return FALSE;

// 设置协作层
if ( m_lpDD->SetCooperativeLevel(hWnd, DDSCL_NORMAL) != DD_OK )
return FALSE;

DDSURFACEDESC   ddsd;   // DirectDraw 表面描述

// 创建主表面
ZeroMemory(&ddsd, sizeof(ddsd));
ddsd.dwSize = sizeof(ddsd);
ddsd.dwFlags = DDSD_CAPS ;
ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;

if ( m_lpDD->CreateSurface(&ddsd, &m_lpDDSPrimary, NULL) != DD_OK )
return FALSE;

// 创建离屏表面对象
ZeroMemory(&ddsd, sizeof(ddsd));
    ddsd.dwSize = sizeof(ddsd);
    ddsd.ddsCaps.dwCaps = DDSCAPS_VIDEOMEMORY | DDSCAPS_OVERLAY;
    ddsd.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT;
    ddsd.dwWidth = src_width;
    ddsd.dwHeight = src_height;

    int i = 0;
    HRESULT                     hRet;
    do {
        ddsd.ddpfPixelFormat = ddpfOverlayFormats[i];
        hRet = m_lpDD->CreateSurface(&ddsd, &m_lpDDSOverlay, NULL);
    } while (hRet != DD_OK && (++i < PF_TABLE_SIZE));

    if (hRet != DD_OK)
        return FALSE;

return TRUE;
}

void CDDrawDisplay::DDrawDispReinit(HWND hWnd, int src_width, int src_height,

       int dst_width, int dst_height)
{
DDrawDispDone();
DDrawDispInit(hWnd, src_width, src_height, dst_width, dst_height);
}

void CDDrawDisplay::DDrawDispDone()
{
    if (m_lpDDSOverlay != NULL)
    {
        // Use UpdateOverlay() with the DDOVER_HIDE flag to remove an overlay

        // from the display.
        m_lpDDSOverlay->UpdateOverlay(NULL, m_lpDDSPrimary, NULL, DDOVER_HIDE,
NULL);
        m_lpDDSOverlay->Release();
        m_lpDDSOverlay = NULL;
    }

    if (m_lpDDSPrimary != NULL)
    {
        m_lpDDSPrimary->Release();
        m_lpDDSPrimary = NULL;
    }

    if (m_lpDD != NULL)
    {
        m_lpDD->Release();
        m_lpDD = NULL;
    }
}

CDDrawDisplay::~CDDrawDisplay()
{
DDrawDispDone();
}

void CDDrawDisplay::DDrawUpdateDisp(unsigned char *src[3], int stride[3])
{
HRESULT     hRet;   // DirectDraw 函数返回值
DDSURFACEDESC   ddsd;   // DirectDraw 表面描述

    memset(&ddsd, 0, sizeof(ddsd));
    ddsd.dwSize = sizeof(ddsd);
   
// Lock down the surface so we can modify it's contents.
    hRet = m_lpDDSOverlay->Lock( NULL, &ddsd, DDLOCK_WAITNOTBUSY, NULL);
    if (FAILED(hRet))
return ;

LPBYTE lpSurf = (LPBYTE)ddsd.lpSurface;

if(lpSurf) {
int i;

// fill Y data
for(i = 0; i < m_src_height; i++)
{
   memcpy(lpSurf, src[0], m_src_width);
   src[0] += stride[0];
   lpSurf += ddsd.lPitch;
}

// fill V data
for(i = 0; i < m_src_height / 2; i++)
{
   memcpy(lpSurf, src[2], m_src_width / 2);
   src[2] += stride[2];
   lpSurf += ddsd.lPitch / 2;
}

// fill U data
for(i = 0; i < m_src_height / 2; i++)
{
   memcpy(lpSurf, src[1], m_src_width / 2);
   src[1] += stride[1];
   lpSurf += ddsd.lPitch / 2;
}
}

m_lpDDSOverlay->Unlock(NULL);

RECT rs, rd;
rs.left = rs.top = 0;
rs.right = m_src_width;
rs.bottom = m_src_height;

rd.left = m_dst_left;
rd.top = m_dst_top;
rd.right = m_dst_left + m_dst_width;
rd.bottom = m_dst_top + m_dst_height;

hRet = m_lpDDSOverlay->UpdateOverlay(&rs, m_lpDDSPrimary, &rd, DDOVER_SHOW, NULL);
}
 

 

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