78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
//-------------------------------
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//GXGetImage 接口一次获取一帧图像，本样例代码演示的就是如何用此接口获取一帧图像
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//-------------------------------
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#include "GxIAPI.h"
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int main(intargc, char* argv[])
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{
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7.GxIAPI 库说明
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版权所有©中国大恒（集团）有限公司北京图像视觉技术分公司 139
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GX_STATUS status = GX_STATUS_SUCCESS;
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GX_DEV_HANDLE hDevice = NULL;
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GX_OPEN_PARAM stOpenParam;
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uint32_t nDeviceNum = 0;
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//初始化库
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status = GXInitLib();
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if (status!= GX_STATUS_SUCCESS)
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{
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return 0;
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}
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//枚举设备列表
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status = GXUpdateDeviceList(&nDeviceNum, 1000);
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if ((status!= GX_STATUS_SUCCESS)||(nDeviceNum<= 0))
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{
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return 0;
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}
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//打开设备
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stOpenParam.accessMode = GX_ACCESS_EXCLUSIVE;
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stOpenParam.openMode = GX_OPEN_INDEX;
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stOpenParam.pszContent = "1";
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status = GXOpenDevice(&stOpenParam, &hDevice);
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if (status == GX_STATUS_SUCCESS)
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{
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//设置相机的流通道包长属性，提高网络相机的采集性能
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bool bImplementPacketSize = false;
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uint32_t unPacketSize = 0;
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// 判断设备是否支持流通道数据包功能
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status = GXIsImplemented(hDevice, GX_INT_GEV_PACKETSIZE,
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&bImplementPacketSize);
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if (bImplementPacketSize)
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{
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// 获取当前网络环境的最优包长
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status = GXGetOptimalPacketSize (hDevice, &unPacketSize);
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// 将最优包长设置为当前设备的流通道包长值
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status = GXSetInt (hDevice, GX_INT_GEV_PACKETSIZE, unPacketSize);
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}
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int64_t nPayLoadSize = 0;
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//获取图像 buffer 大小，下面动态申请内存
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status = GXGetInt(hDevice, GX_INT_PAYLOAD_SIZE, &nPayLoadSize);
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if (status == GX_STATUS_SUCCESS&&nPayLoadSize> 0)
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{
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//定义 GXGetImage 的传入参数
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GX_FRAME_DATA stFrameData;
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//根据获取的图像 buffer 大小 m_nPayLoadSize 申请 buffer
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stFrameData.pImgBuf= malloc((size_t)nPayLoadSize);
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//发送开始采集命令
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status = GXSendCommand(hDevice, GX_COMMAND_ACQUISITION_START);
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if (status == GX_STATUS_SUCCESS)
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{
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//调用 GXGetImage 取一帧图像
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while(GXGetImage(hDevice, &stFrameData, 100) != GX_STATUS_SUCCESS)
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{
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Sleep(10);
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}
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if (stFrameData.nStatus == GX_FRAME_STATUS_ SUCCESS)
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{
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//图像获取成功
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//对图像进行处理...
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}
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}
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//发送停止采集命令
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status = GXSendCommand(hDevice, GX_COMMAND_ACQUISITION_STOP);
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//释放图像缓冲区 buffer
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free(stFrameData.pImgBuf);
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}
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}
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status = GXCloseDevice(hDevice);
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status = GXCloseLib();
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return 0;
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} |