VENDOR请求是用户定义的命令接口，是否是标准的命令格式

我的论文也是USB视频数据采集，采用MSP430单片机+ISP1161+PDI摄像头，现在HCD已经完成了，接下要读取视频数据，不知道如何进行，主要缺乏摄像头的资料，哪位大虾做过方面的工作，请指教！谢谢

下面是引用king_dragon于2004-05-28 14:52发表的:
是不是问题太简单，高手们都不屑于回答！
只好自己尝试解答：
1、DDK中USBIntel例程基本实现usb camera device driver的功能，适用于两款intel芯片的设备。如果开发自己的usb camera driver，可以在此例程的基础上修改，根据需要定制driver和firmware即可。
2、作为usbcamd的客户minidriver，firmware必须满足USB Device Class Definition for video devices spec，在firmware中实现视频功能和视频速度控制，使用相关描述符和响应EP0控制命令来实现。
3、在driver中读取标志帧或特殊帧，判断一帧起始。firmware需在一帧结束时生成结束标志。
.......

对于第二点，请仔细阅读DDK帮助文档
Ideally, USB imaging devices designed for use with USBCAMD will have one of the following configurations:

USB cameras that support a single ISO data stream where synchronization information (start and end of video or still frames) is embedded in the data stream. These cameras can time-multiplex both video and still frames through the same ISO pipe or reuse individual video frames as still frames.
Same as the first configuration where USB cameras support a single ISO data stream with the addition of an Interrupt Pipe for external trigger event notifications.
Same as the first configuration where USB cameras support a single ISO data stream with the addition of two I/O bulk pipes to control and retrieve still frames from camera.
USB cameras that support dual ISO streams where one is used for streaming data and the other for synchronization information (start and end of video or still frames). These cameras can also time-multiplex both video and still frames through the same ISO pipe or reuse individual video frames as still frames.
USB cameras that use two bulk pipes for streaming data and control parameters to and from the camera and a third optional interrupt pipe for trigger event notifications.

现在市面上基本还没有符合Video Class的摄像头产品
如果有，请告之，谢谢

我也在研究webcam，欢迎讨论
msn:crazytandriver@21cn.com

我想请问如果要把视频处理功能加到DRIVER里面，是可以做成filter driver的形式还是一定要做成MINIDRIVER？