aar调用sv4000E视频采集卡dll库实现视频显示和镜像处理

前面写过调用win系统自带的函数利用directshow方式来显示摄像头和对图像进行上下左右翻转，还写过调用网上的ocx控件来操作摄像头，但是当这些方式应用与sv4000这个采集卡的时候就出现了问题...(采集卡的通道有时候有某些通道出现打不开。。。。而且这个现象很频繁)

于是找供货商询问，并索取了它的SDK，发现它自带的实例是调用的一个dll

把这个dll封装到aar之后，再次测试，所有的通道均没有问题了，晕

下面是操作代码：

import win.ui;
/*DSG{{*/
mainForm = win.form(text="调用SDK";right=1081;bottom=655)
mainForm.add(
button={cls="button";text="button";left=881;top=145;right=1031;bottom=199;z=5};
button2={cls="button";text="button";left=881;top=216;right=1031;bottom=270;z=6};
picturebox={cls="picturebox";left=0;top=0;right=393;bottom=323;dl=1;dt=1;z=1};
picturebox2={cls="picturebox";left=406;top=0;right=799;bottom=323;dr=1;dt=1;z=2};
picturebox3={cls="picturebox";left=0;top=333;right=393;bottom=656;db=1;dl=1;z=3};
picturebox4={cls="picturebox";left=406;top=333;right=799;bottom=656;db=1;dr=1;z=4}
)
/*}}*/



var dll = ..raw.loadDll("\res\DXMediaCap.dll");

dxInitialize = dll.api("DXInitialize","int()");
dxUninitialize = dll.api("DXUninitialize","int()");
dxopenDevice = dll.api("DXOpenDevice","INT(int idx, int& err)");
dxCloseDevice = dll.api("DXCloseDevice","int(INT Device)");
dxSetVideoPara = dll.api("DXSetVideoPara","INT(INT Device,int standard, int colorspace, int width, int height, int framerate)");
dxDeviceRun = dll.api("DXDeviceRun","int(INT idx)");
dxDeviceStop = dll.api("DXDeviceStop","int(INT idx)");
dxStartPreview = dll.api("DXStartPreview","int(INT Device, INT hWnd, struct rect, int vmrtype)");
dxStopPreview = dll.api("DXStopPreview","int(INT Device)");
dxFlipVideo = dll.api("DXFlipVideo","int(INT Device, bool flip )");
dxMirrorVideo = dll.api("DXMirrorVideo","int(INT Device, bool mirror )");
dxEnableDenoise = dll.api("DXEnableDenoise","int(INT Device, int denoise )");
dxEnableSharpen = dll.api("DXEnableSharpen","int(INT Device, int deSharpness )");
dxEnableDeinterlace = dll.api("DXEnableDeinterlace","int(INT Device, int deinterlace  )");

if(!dxInitialize()){
	CardHandle,ret = dxopenDevice(0,0);
	dxSetVideoPara(CardHandle, 32, 2, mainForm.picturebox.width, mainForm.picturebox.height, 25)
    dxDeviceRun(CardHandle)
	dxStartPreview(CardHandle, mainForm.picturebox.hwnd, mainForm.picturebox.clientRect, 1)
	dxEnableDenoise(CardHandle,65);
	dxEnableSharpen(CardHandle,25);
	dxEnableDeinterlace(CardHandle,0);
	
	
	CardHandle1,ret = dxopenDevice(1,0);
	dxSetVideoPara(CardHandle1, 32, 2, mainForm.picturebox2.width, mainForm.picturebox2.height, 25)
    dxDeviceRun(CardHandle1)
	dxStartPreview(CardHandle1, mainForm.picturebox2.hwnd, mainForm.picturebox2.clientRect, 1)
	dxEnableDenoise(CardHandle1,65);
	dxEnableSharpen(CardHandle1,25);
	dxEnableDeinterlace(CardHandle1,0);
	
	CardHandle2,ret = dxopenDevice(2,0);
	dxSetVideoPara(CardHandle2, 32, 2, mainForm.picturebox3.width, mainForm.picturebox3.height, 25)
    dxDeviceRun(CardHandle2)
	dxStartPreview(CardHandle2, mainForm.picturebox3.hwnd, mainForm.picturebox3.clientRect, 1)
	dxEnableDenoise(CardHandle2,65);
	dxEnableSharpen(CardHandle2,25);
	dxEnableDeinterlace(CardHandle2,0);
	
	CardHandle3,ret = dxopenDevice(3,0);
	dxSetVideoPara(CardHandle3, 32, 2, mainForm.picturebox4.width, mainForm.picturebox4.height, 25)
    dxDeviceRun(CardHandle3)
	dxStartPreview(CardHandle3, mainForm.picturebox4.hwnd, mainForm.picturebox4.clientRect, 1)
	dxEnableDenoise(CardHandle3,65);
	dxEnableSharpen(CardHandle3,25);
	dxEnableDeinterlace(CardHandle3,0);
	
}

mainForm.onClose = function(hwnd,message,wParam,lParam){

    	dxStopPreview(CardHandle);
    	dxDeviceStop(CardHandle);
    	dxCloseDevice(CardHandle);
    	dxStopPreview(CardHandle1);
    	dxDeviceStop(CardHandle1);
    	dxCloseDevice(CardHandle1);
    	dxStopPreview(CardHandle2);
    	dxDeviceStop(CardHandle2);
    	dxCloseDevice(CardHandle2);
    	dxStopPreview(CardHandle3);
    	dxDeviceStop(CardHandle3);
    	dxCloseDevice(CardHandle3);
    	dxUninitialize();	

    
    
}
var Flipflag,Mirrorflag = false,false;

mainForm.button.oncommand = function(id,event){
    Flipflag = !Flipflag
	dxFlipVideo(CardHandle1,Flipflag);
}

mainForm.button2.oncommand = function(id,event){
    Mirrorflag = !Mirrorflag
	dxMirrorVideo(CardHandle1,Mirrorflag);
}

mainForm.show();

return win.loopMessage();

这个代码只能运行在有sv4000采集卡的硬件上。。。。。