c++的 unsigned char指针,python格式为:POINTER(c_char)
ok的项目:百度网盘里,HikSDKyv12View
fRealDataCallBack_V30 = REALDATACALLBACK(_fRealDataCallBack_V30) DECCALLBACK = CFUNCTYPE(None, c_long, POINTER(c_char), frame_INFO, c_long, c_long) def _fDecCallBack(nPort, pBuf, nSize, pframeInfo, nReserved1, nReserved2): print(nPort, nSize, pframeInfo.nWidth) fDecCallBack = DECCALLBACK(_fDecCallBack) DISPLAYCALLBACK = CFUNCTYPE(None, c_long, POINTER(c_char), c_long, c_long, c_long, c_long, c_long, c_long) def _fDisplayCallBack(nPort, pBuf, nSize, nWidth, nHeight, nStamp, nType, nReserved): print(nPort, nSize, nWidth, nHeight, nStamp, nType) bbb=string_at(pBuf,nSize) height=1080 width=1920 nparr = np.fromstring(bbb, np.uint8) img = nparr.reshape(height* 3 // 2, width) img2=cv2.cvtColor(img,cv2.COLOR_YUV2BGR_YV12) # yu12 = cv2.cvtColor(img2, cv2.COLOR_BGR2YUV_YV12) # print("time",time.time()-start) cv2.imshow("sadf",img2) cv2.waitKey(1) fDisplayCallBack = DISPLAYCALLBACK(_fDisplayCallBack)
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