5. 函数参考

• 5.1. media open()
• 5.2. media close()
• 5.3. media ioctl()
• 5.4. ioctl MEDIA_IOC_DEVICE_INFO
• 5.5. ioctl MEDIA_IOC_G_TOPOLOGY
• 5.6. ioctl MEDIA_IOC_ENUM_ENTITIES
• 5.7. ioctl MEDIA_IOC_ENUM_LINKS
• 5.8. ioctl MEDIA_IOC_SETUP_LINK
• 5.9. ioctl MEDIA_IOC_REQUEST_ALLOC
• 5.10. request close()
• 5.11. request ioctl()
• 5.12. request poll()
• 5.13. ioctl MEDIA_REQUEST_IOC_QUEUE
• 5.14. ioctl MEDIA_REQUEST_IOC_REINIT