当然是:info = &v4l2_ioctls[_IOC_NR(cmd)]; staticstructv4l2_ioctl_info v4l2_ioctls[] = {//.ioctl, .u.func, .debug, .flagsIOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap,0),//列举性能IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR...
void v4l2_info_capability(const v4l2_capability &vcap) { printf("\tDriver name : %s\n", vcap.driver); printf("\tCard type : %s\n", vcap.card); printf("\tBus info : %s\n", vcap.bus_info); printf("\tDriver version : %d.%d.%d\n", vcap.version >> 16, (vcap.version >> 8)...
if (v4l2_is_known_ioctl(cmd)) { struct v4l2_ioctl_info *info = &v4l2_ioctls[_IOC_NR(cmd)]; if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) && !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler)) return -ENOTTY; if (use_fh_prio && (info->flags & INFO_FL_PR...
Extended Pix Format Media Driver Info: Driver name : uvcvideo Model : PC Cam Serial : Bus info : 1.1 Media version : 0.1.0 Hardware revision: 0x00000007 (7) Driver version : 4.4.194 Entity Info: ID : 1 Name : PC Cam Type : V4L2 I/O Flags : default Major : 81 Minor : 8 Pad...
int get_device_info(int fd) { struct v4l2_capability cap; if(-1==ioctl(fd,VIDIOC_QUERYCAP,∩)) printf("info:VIDIOC_QUERYCAP ERROR\n"); else printf("info:Driver Name:%s...Card Name:%s...Bus info:%s...Driver Version:%u.%u.%u\n", cap....
if(-1 == xioctl(fd2,FBIOGET_VSCREENINFO,&vinfo)) errno_exit("FBIOGET_VSCREENINFO"); screensize = vinfo.xres*vinfo.yres*vinfo.bits_per_pixel/8; fprintf(stdout,"<---screen infomation--->\n"); fprintf(stdout,"id=%s\n",finfo.id); fprintf(stdout,"x=%d\n",v...
int LCD_JPEG_Show(const char *JpegData, int size) { int min_hight = LCD_height, min_width = LCD_width, valid_bytes; struct jpeg_decompress_struct cinfo; struct jpeg_error_mgr jerr; cinfo.err = jpeg_std_error(&jerr);//错误处理对象与解压对象绑定 //创建解码对象 jpeg_create_decompress...
u8 driver[16];//驱动名字u8 card[32];//设备名字u8 bus_info[32];//设备在系统中的位置u32 version;//驱动版本号u32 capabilities;//设备支持的操作u32 reserved[4];//保留字段}; capabilities 常用值: V4L2_CAP_VIDEO_CAPTURE // 是否支持图像获取 ...
3、IDEO_CAPTURE /是否支持图像获取例:显示设备信息struct v4l2_capability cap;ioctl(fd,VIDIOC_QUERYCAP,&cap);printf( “ Driver Name:%snCard Name:%snBus in fo:%snDriverVersion:%u.%u.%un ”,cap.driver,cap.card,cap.bus_info,(cap.version16)&OXFF (cap.version8)&OXFFcap.version& OXFF;5. 设...
(v4l2_dev->name, "sv", sizeof(v4l2_dev->name)); v4l2_info(v4l2_dev, "Color SV VGA driver %s\n", "0.0.1"); //output V4l2 info ret = v4l2_device_register(NULL, v4l2_dev); if (ret < 0) { printk(KERN_INFO "Could not register v4l2_device\n"); return ret; } //setup ...