我认为uint8_t类型的对象无法包含值 256。:) 为什么不直接使用size_t类型而不是uint8_t类型? static const size_t screenWidth = 256; static const size_t screenHeight = 240;
根据你提供的代码片段,可以使用以下方式将NV21格式的图像按照给定的矩形区域进行裁剪: staticinlinevoidYV12Crop(constuint8_t*src,constintwidth,constintheight,constcv::RectcheckRect,uint8_t*out){ if(src==NULL){ return; } // 计算每个像素所占字节数 intpixelSize=3/2; // 计算原图行首和裁剪后图像...
cmdData.push_back(static_cast<uint8_t>(value));// 转换成 uint8_t 并存入 vector }catch(conststd::exception&e){ std::cerr<<"Error converting hex string to uint8_t: "<<e.what()<<std::endl; } } // 输出结果以验证 for(constauto&cmd:cmdData){ std::cout<<"cmd : "<<static_ca...
STATIC INLINE UINT32 OsCheckBoxMem(const LOS_MEMBOX_INFO *boxInfo, const VOID *node) { UINT32 offset; ⑴ if (boxInfo->uwBlkSize == 0) { return LOS_NOK; } ⑵ offset = (UINT32)((UINTPTR)node - (UINTPTR)(boxInfo + 1)); ⑶ if ((offset % boxInfo->uwBlkSize) != 0) { retu...
template<typename Type> bool get_bits(Type input, uint8_t offset, uint8_t n, Type* destination) { if (offset + n> sizeof(Type) * 8) return false; Type bitmask = 0; for (int i = 0; i < n; ++i) bitmask |= (1 << i); *destination = static_cast<Type>(input >> offset...
.data = (const uint8_t *)(NYX_RES_ADDR + 0x1D900), }; lv_img_dsc_t ctcaer_logo = { const lv_img_dsc_t ctcaer_logo = { .header.always_zero = 0, .header.w = 147, .header.h = 76, @@ -405,4 +421,4 @@ lv_img_dsc_t ctcaer_logo = { #endif #endif #endif0...
const char * IpToStr(UINT32 IpAddr) { static char strBuff[16]; // static局部变量, 用于返回地址有效 const unsigned char *pChIP = (const unsigned char *)&IpAddr; sprintf(strBuff, "%u.%u.%u.%u", pChIP[0], pChIP[1], pChIP[2], pChIP[3]); return strBuff; } 注意...
uint8_t data = 0; data++; data++; printf(“static function data = %d\r\n”,data); } void...NostaticFun(void) { uint8_t data = 0; data++; data++; printf(“no static function...data = %d\r\n”,data); } int main() { //static 功能 printf(“局部static的功能\r\n”); ...
const char * IpToStr(UINT32 IpAddr) { static char strBuff[16]; // static局部变量, 用于返回地址有效 const unsigned char *pChIP = (const unsigned char *)&IpAddr; sprintf(strBuff, "%u.%u.%u.%u", pChIP[0], pChIP[1], pChIP[2], pChIP[3]); ...
没有符号的整数会被提升为有符号吗?什么是表达式类型(uint16_t)-1 * (uint16_t)-1 、、 static_assert( uint8_t(-1)*uint8_t(-1) == 1); // error: static assertion failedstatic_assert( uint64_t(-1)*uint64_t(-1) =static_assert( uint16_t(-1)*uint16_ ...