Hi, This is the 2nd version of virtio-video patch. The PDF is available in [1]. The first version was sent at [2]. Any feedback would be appreciated. Thank you. Best, Keiichi [1]: https://drive.google.com/drive/folders/1eT5fEckBoor2iHZR4f4GLxYzFMVapOFx?usp=sharing [2]: https://markmail.org/message/gc6h25acct22niut Change log: v2: * Removed functionalities except encoding and decoding. * Splited encoder and decoder into different devices that use the same protocol. * Replaced GET_FUNCS with GET_CAPABILITY. * Updated structs for capabilities. - Defined new structs and enums such as image formats, profiles, range (min, max, step), etc * For virtio_video_pixel_format, chose a naming convention that is used in DRM. We removed XBGR, NV21 and I422, as they are not used in the current draft implementation. https://lwn.net/Articles/806416/ - Removed virtio_video_control, whose usage was not documented yet and which is not necessary for the simplest decoding scenario. - Removed virtio_video_desc, as it is no longer needed. * Updated struct virtio_video_config for changes around capabilities. * Added a way to represent supported combinations of formats. - A field "mask" in virtio_video_format_desc plays this role. * Removed VIRTIO_VIDEO_T_STREAM_{START,STOP} because they don't play any meaningful roles. * Removed VIRTIO_VIDEO_T_STREAM_{ATTACH, DETACH}_BACKING and merged them into RESOURCE_{CREATE, DESTROY}. * Added a way to notify/specify resource creation method. - Added a feature flag. - Defined enum virtio_video_mem_type. - Added new fields in video_stream_create. * Modified fields in virtio_video_params. - Added crop information. * Removed enum virtio_video_channel_type because we can get this information by image format. * Renamed virtio_video_pin to virtio_video_buf_type. - It's similar to V4L2_BUF_TYPE_VIDEO_{OUTPUT, CAPTURE}. * Added an error event. * Reordered some subsections. * Changed styles to make it consistent with other devices. Dmitry Sepp (1): virtio-video: Add virtio video device specification content.tex | 1 + virtio-video.tex | 579 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 580 insertions(+) create mode 100644 virtio-video.tex -- 2.24.1.735.g03f4e72817-goog
