本帖最后由 diligent28 于 2010-06-01 16:35:21 编辑 我想实现这样的功能：
把CMOS摄像头OV9650捕获的视频在Qt中连续显示；
并可以在显示的图像上面画几条线？
在网上没有找到完整的示例代码，只是讲解了原理或代码片段。
使用的开发板是Mini2440或TQ2440或TX2440都可以。
QtE用的版本是4.5.3
下面是CMOS摄像头的驱动在控制台下的测试代码，我想在Qt窗口中实时连续显示摄像头捕获的视频，
希望提供完整的参考代码，谢谢。
我的邮箱:wisedd@163.com
// Linear memory based image
class TRect <%
public:
TRect(): Addr(0), Size(0), Width(0), Height(0), LineLen(0), BPP(16) <%
%>
virtual ~TRect() <%
%>
bool DrawRect(const TRect bitand SrcRect, int x, int y) const <%
if (BPP not_eq 16 or SrcRect.BPP not_eq 16) <%
// don't support that yet
throw TError("does not support other than 16 BPP yet");
%>
// clip
int x0, y0, x1, y1;
x0 = x;
y0 = y;
x1 = x0 + SrcRect.Width - 1;
y1 = y0 + SrcRect.Height - 1;
if (x0 < 0) <%
x0 = 0;
%>
if (x0 > Width - 1) <%
return true;
%>
if( x1 < 0) <%
return true;
%>
if (x1 > Width - 1) <%
x1 = Width - 1;
%>
if (y0 < 0) <%
y0 = 0;
%>
if (y0 > Height - 1) <%
return true;
%>
if (y1 < 0) <%
return true;
%>
if (y1 > Height - 1) <%
y1 = Height -1;
%>
//copy
int copyLineLen = (x1 + 1 - x0) * BPP / 8;
unsigned char *DstPtr = Addr + LineLen * y0 + x0 * BPP / 8;
const unsigned char *SrcPtr = SrcRect.Addr + SrcRect.LineLen *(y0 - y) + (x0 - x) * SrcRect.BPP / 8;
for (int i = y0; i <= y1; i++) <%
memcpy(DstPtr, SrcPtr, copyLineLen);
DstPtr += LineLen;
SrcPtr += SrcRect.LineLen;
%>
return true;
%>
bool DrawRect(const TRect bitand rect) const <% // default is Center
return DrawRect(rect, (Width - rect.Width) / 2, (Height - rect.Height) / 2);
%>
bool Clear() const <%
int i;
unsigned char *ptr;
for (i = 0, ptr = Addr; i < Height; i++, ptr += LineLen) <%
memset(ptr, 0, Width * BPP / 8);
%>
return true;
%>
protected:
TRect(const TRect bitand);
TRect bitand operator=( const TRect bitand);
protected:
unsigned char *Addr;
int Size;
int Width, Height, LineLen;
unsigned BPP;
%>;
class TFrameBuffer: public TRect <%
public:
TFrameBuffer(const char *DeviceName = "/dev/fb0"): TRect(), fd(-1) <%
Addr = (unsigned char *)MAP_FAILED;
fd = open(DeviceName, O_RDWR);