> > From: Alexandre Courbot <[email protected]> > > > > Add the first version of the virtio-media driver. > > > > This driver acts roughly as a V4L2 relay between user-space and the > > virtio virtual device on the host, so it is relatively simple, yet > > unconventional. It doesn't use VB2 or other frameworks typically used in > > a V4L2 driver, and most of its complexity resides in correctly and > > efficiently building the virtio descriptor chain to pass to the host, > > avoiding copies whenever possible. This is done by > > scatterlist_builder.[ch]. > > > > This version supports MMAP buffers, while USERPTR buffers can also be > > enabled through a driver option. DMABUF support is still pending. > > > > NOTE: This depends on the VIRTIO ID being added in this patch: > > https://lore.kernel.org/all/[email protected]
I saw some CI build failures come back, but that should be resolved if the patch above is merged. If you'd rather me add it to this patch series let me know. > > Signed-off-by: Alexandre Courbot <[email protected]> > > Co-developed-by: Brian Daniels <[email protected]> > > Signed-off-by: Brian Daniels <[email protected]> > > Thanks for the patches! > Sent some comments on individual patches. Thanks for the feedback! I've started to prepare v5 based on the comments so far, I'll hold off on sending it until we've resolved the other open threads. > > --- > > Guest Setup > > > > Tests were ran on a Debian 12 guest running with crosvm. The guest image > > was created with: > > > > $ virt-builder debian-12 --root-password password:"" > > > > Build crosvm and launch the guest starting at the "Crosvm" section on > > this page: > > https://github.com/chromeos/virtio-media/blob/main/TRY_IT_OUT.md#crosvm > > > > NOTE: Before running v4l2-compliance in the guest, you need to install > > v4l-utils and ffmpeg: > > > > $ apt update && apt install v4l-utils ffmpeg > > > > --- > > Compliance Testing > > > > This was tested using v4l2-compliance. Since virtio-media serves as > > a proxy to host devices for the guest VMs, we expect the guest > > compliance test to essentially match the host compliance test for the > > same device. > > > > NOTE: v4l2-compliance changes its test behavior depending on the driver > > name. In the guest, the driver name for virtio-media proxied-devices is > > always "virtio-media", even if the actual host device has a driver name > > of e.g. "uvcvideo". To ensure the test is consistent between the host > > and the guest, I created a patch for the v4l2-compliance tool that > > allows you to override the driver name. All test results that follow use > > this patch: > > https://lore.kernel.org/r/[email protected]/ > > > > All tests used a Logitech USB Webcam C925e. > > > > As tested on the host: > > > > $ v4l2-compliance -d1 -s > > > > v4l2-compliance 1.33.0-5471, 64 bits, 64-bit time_t > > v4l2-compliance SHA: 9f2d3ea879ff 2026-05-28 14:45:11 > > > > Compliance test for uvcvideo device /dev/video1: > > > > Driver Info: > > Driver name : uvcvideo > > Card type : Logitech Webcam C925e > > Bus info : usb-0000:04:00.1-3 > > Driver version : 6.18.14 > > Capabilities : 0x84a00001 > > Video Capture > > Metadata Capture > > Streaming > > Extended Pix Format > > Device Capabilities > > Device Caps : 0x04200001 > > Video Capture > > Streaming > > Extended Pix Format > > Media Driver Info: > > Driver name : uvcvideo > > Model : Logitech Webcam C925e > > Serial : 686F371F > > Bus info : usb-0000:04:00.1-3 > > Media version : 6.18.14 > > Hardware revision: 0x00000016 (22) > > Driver version : 6.18.14 > > Interface Info: > > ID : 0x03000002 > > Type : V4L Video > > Entity Info: > > ID : 0x00000001 (1) > > Name : Logitech Webcam C925e > > Function : V4L2 I/O > > Flags : default > > Pad 0x01000007 : 0: Sink > > Link 0x0200001f: from remote pad 0x100000a of entity 'Processing 3' > > (Video Pixel Formatter): Data, Enabled, Immutable > > > > Required ioctls: > > test MC information (see 'Media Driver Info' above): OK > > test VIDIOC_QUERYCAP: OK > > test invalid ioctls: OK > > > > Allow for multiple opens: > > test second /dev/video1 open: OK > > test VIDIOC_QUERYCAP: OK > > test VIDIOC_G/S_PRIORITY: OK > > test for unlimited opens: OK > > > > Debug ioctls: > > test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported) > > test VIDIOC_LOG_STATUS: OK (Not Supported) > > > > Input ioctls: > > test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported) > > test VIDIOC_G/S_FREQUENCY: OK (Not Supported) > > test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported) > > test VIDIOC_ENUMAUDIO: OK (Not Supported) > > test VIDIOC_G/S/ENUMINPUT: OK > > test VIDIOC_G/S_AUDIO: OK (Not Supported) > > Inputs: 1 Audio Inputs: 0 Tuners: 0 > > > > Output ioctls: > > test VIDIOC_G/S_MODULATOR: OK (Not Supported) > > test VIDIOC_G/S_FREQUENCY: OK (Not Supported) > > test VIDIOC_ENUMAUDOUT: OK (Not Supported) > > test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported) > > test VIDIOC_G/S_AUDOUT: OK (Not Supported) > > Outputs: 0 Audio Outputs: 0 Modulators: 0 > > > > Input/Output configuration ioctls: > > test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported) > > test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported) > > test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported) > > test VIDIOC_G/S_EDID: OK (Not Supported) > > > > Control ioctls (Input 0): > > test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK > > test VIDIOC_QUERYCTRL: OK > > test VIDIOC_G/S_CTRL: OK > > fail: v4l2-test-controls.cpp(983): ret != EINVAL (got 13) > > test VIDIOC_G/S/TRY_EXT_CTRLS: FAIL > > test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK > > test VIDIOC_G/S_JPEGCOMP: OK (Not Supported) > > Standard Controls: 19 Private Controls: 0 > > > > Format ioctls (Input 0): > > test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK > > test VIDIOC_G/S_PARM: OK > > test VIDIOC_G_FBUF: OK (Not Supported) > > test VIDIOC_G_FMT: OK > > test VIDIOC_TRY_FMT: OK > > test VIDIOC_S_FMT: OK > > test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported) > > test Cropping: OK (Not Supported) > > test Composing: OK (Not Supported) > > test Scaling: OK (Not Supported) > > > > Codec ioctls (Input 0): > > test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported) > > test VIDIOC_G_ENC_INDEX: OK (Not Supported) > > test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported) > > > > Buffer ioctls (Input 0): > > test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK > > test CREATE_BUFS maximum buffers: OK > > test VIDIOC_REMOVE_BUFS: OK > > test VIDIOC_EXPBUF: OK > > test Requests: OK (Not Supported) > > test blocking wait: OK > > > > Test input 0: > > > > Streaming ioctls: > > test read/write: OK (Not Supported) > > > > Video Capture: Frame #000 > > Video Capture: Frame #001 > > Video Capture: Frame #002 > > Video Capture: Frame #003 > > Video Capture: Frame #004 > > Video Capture: Frame #005 > > Video Capture: Frame #006 > > Video Capture: Frame #007 > > Video Capture: Frame #008 > > Video Capture: Frame #009 > > Video Capture: Frame #010 > > Video Capture: Frame #011 > > Video Capture: Frame #012 > > Video Capture: Frame #013 > > Video Capture: Frame #014 > > Video Capture: Frame #015 > > Video Capture: Frame #016 > > Video Capture: Frame #017 > > Video Capture: Frame #018 > > Video Capture: Frame #019 > > Video Capture: Frame #020 > > Video Capture: Frame #021 > > Video Capture: Frame #022 > > Video Capture: Frame #023 > > Video Capture: Frame #024 > > Video Capture: Frame #025 > > Video Capture: Frame #026 > > Video Capture: Frame #027 > > Video Capture: Frame #028 > > Video Capture: Frame #029 > > Video Capture: Frame #030 > > Video Capture: Frame #031 > > Video Capture: Frame #032 > > Video Capture: Frame #033 > > Video Capture: Frame #034 > > Video Capture: Frame #035 > > Video Capture: Frame #036 > > Video Capture: Frame #037 > > Video Capture: Frame #038 > > Video Capture: Frame #039 > > Video Capture: Frame #040 > > Video Capture: Frame #041 > > Video Capture: Frame #042 > > Video Capture: Frame #043 > > Video Capture: Frame #044 > > Video Capture: Frame #045 > > Video Capture: Frame #046 > > Video Capture: Frame #047 > > Video Capture: Frame #048 > > Video Capture: Frame #049 > > Video Capture: Frame #050 > > Video Capture: Frame #051 > > Video Capture: Frame #052 > > Video Capture: Frame #053 > > Video Capture: Frame #054 > > Video Capture: Frame #055 > > Video Capture: Frame #056 > > Video Capture: Frame #057 > > Video Capture: Frame #058 > > Video Capture: Frame #059 > > > > test MMAP (no poll, REQBUFS): OK > > > > Video Capture: Frame #000 (select) > > Video Capture: Frame #001 (select) > > Video Capture: Frame #002 (select) > > Video Capture: Frame #003 (select) > > Video Capture: Frame #004 (select) > > Video Capture: Frame #005 (select) > > Video Capture: Frame #006 (select) > > Video Capture: Frame #007 (select) > > Video Capture: Frame #008 (select) > > Video Capture: Frame #009 (select) > > Video Capture: Frame #010 (select) > > Video Capture: Frame #011 (select) > > Video Capture: Frame #012 (select) > > Video Capture: Frame #013 (select) > > Video Capture: Frame #014 (select) > > Video Capture: Frame #015 (select) > > Video Capture: Frame #016 (select) > > Video Capture: Frame #017 (select) > > Video Capture: Frame #018 (select) > > Video Capture: Frame #019 (select) > > Video Capture: Frame #020 (select) > > Video Capture: Frame #021 (select) > > Video Capture: Frame #022 (select) > > Video Capture: Frame #023 (select) > > Video Capture: Frame #024 (select) > > Video Capture: Frame #025 (select) > > Video Capture: Frame #026 (select) > > Video Capture: Frame #027 (select) > > Video Capture: Frame #028 (select) > > Video Capture: Frame #029 (select) > > Video Capture: Frame #030 (select) > > Video Capture: Frame #031 (select) > > Video Capture: Frame #032 (select) > > Video Capture: Frame #033 (select) > > Video Capture: Frame #034 (select) > > Video Capture: Frame #035 (select) > > Video Capture: Frame #036 (select) > > Video Capture: Frame #037 (select) > > Video Capture: Frame #038 (select) > > Video Capture: Frame #039 (select) > > Video Capture: Frame #040 (select) > > Video Capture: Frame #041 (select) > > Video Capture: Frame #042 (select) > > Video Capture: Frame #043 (select) > > Video Capture: Frame #044 (select) > > Video Capture: Frame #045 (select) > > Video Capture: Frame #046 (select) > > Video Capture: Frame #047 (select) > > Video Capture: Frame #048 (select) > > Video Capture: Frame #049 (select) > > Video Capture: Frame #050 (select) > > Video Capture: Frame #051 (select) > > Video Capture: Frame #052 (select) > > Video Capture: Frame #053 (select) > > Video Capture: Frame #054 (select) > > Video Capture: Frame #055 (select) > > Video Capture: Frame #056 (select) > > Video Capture: Frame #057 (select) > > Video Capture: Frame #058 (select) > > Video Capture: Frame #059 (select) > > > > test MMAP (select, REQBUFS): OK > > > > Video Capture: Frame #000 (epoll) > > Video Capture: Frame #001 (epoll) > > Video Capture: Frame #002 (epoll) > > Video Capture: Frame #003 (epoll) > > Video Capture: Frame #004 (epoll) > > Video Capture: Frame #005 (epoll) > > Video Capture: Frame #006 (epoll) > > Video Capture: Frame #007 (epoll) > > Video Capture: Frame #008 (epoll) > > Video Capture: Frame #009 (epoll) > > Video Capture: Frame #010 (epoll) > > Video Capture: Frame #011 (epoll) > > Video Capture: Frame #012 (epoll) > > Video Capture: Frame #013 (epoll) > > Video Capture: Frame #014 (epoll) > > Video Capture: Frame #015 (epoll) > > Video Capture: Frame #016 (epoll) > > Video Capture: Frame #017 (epoll) > > Video Capture: Frame #018 (epoll) > > Video Capture: Frame #019 (epoll) > > Video Capture: Frame #020 (epoll) > > Video Capture: Frame #021 (epoll) > > Video Capture: Frame #022 (epoll) > > Video Capture: Frame #023 (epoll) > > Video Capture: Frame #024 (epoll) > > Video Capture: Frame #025 (epoll) > > Video Capture: Frame #026 (epoll) > > Video Capture: Frame #027 (epoll) > > Video Capture: Frame #028 (epoll) > > Video Capture: Frame #029 (epoll) > > Video Capture: Frame #030 (epoll) > > Video Capture: Frame #031 (epoll) > > Video Capture: Frame #032 (epoll) > > Video Capture: Frame #033 (epoll) > > Video Capture: Frame #034 (epoll) > > Video Capture: Frame #035 (epoll) > > Video Capture: Frame #036 (epoll) > > Video Capture: Frame #037 (epoll) > > Video Capture: Frame #038 (epoll) > > Video Capture: Frame #039 (epoll) > > Video Capture: Frame #040 (epoll) > > Video Capture: Frame #041 (epoll) > > Video Capture: Frame #042 (epoll) > > Video Capture: Frame #043 (epoll) > > Video Capture: Frame #044 (epoll) > > Video Capture: Frame #045 (epoll) > > Video Capture: Frame #046 (epoll) > > Video Capture: Frame #047 (epoll) > > Video Capture: Frame #048 (epoll) > > Video Capture: Frame #049 (epoll) > > Video Capture: Frame #050 (epoll) > > Video Capture: Frame #051 (epoll) > > Video Capture: Frame #052 (epoll) > > Video Capture: Frame #053 (epoll) > > Video Capture: Frame #054 (epoll) > > Video Capture: Frame #055 (epoll) > > Video Capture: Frame #056 (epoll) > > Video Capture: Frame #057 (epoll) > > Video Capture: Frame #058 (epoll) > > Video Capture: Frame #059 (epoll) > > > > test MMAP (epoll, REQBUFS): OK > > > > Video Capture: Frame #000 > > Video Capture: Frame #001 > > Video Capture: Frame #002 > > Video Capture: Frame #003 > > Video Capture: Frame #004 > > Video Capture: Frame #005 > > Video Capture: Frame #006 > > Video Capture: Frame #007 > > Video Capture: Frame #008 > > Video Capture: Frame #009 > > Video Capture: Frame #010 > > Video Capture: Frame #011 > > Video Capture: Frame #012 > > Video Capture: Frame #013 > > Video Capture: Frame #014 > > Video Capture: Frame #015 > > Video Capture: Frame #016 > > Video Capture: Frame #017 > > Video Capture: Frame #018 > > Video Capture: Frame #019 > > Video Capture: Frame #020 > > Video Capture: Frame #021 > > Video Capture: Frame #022 > > Video Capture: Frame #023 > > Video Capture: Frame #024 > > Video Capture: Frame #025 > > Video Capture: Frame #026 > > Video Capture: Frame #027 > > Video Capture: Frame #028 > > Video Capture: Frame #029 > > Video Capture: Frame #030 > > Video Capture: Frame #031 > > Video Capture: Frame #032 > > Video Capture: Frame #033 > > Video Capture: Frame #034 > > Video Capture: Frame #035 > > Video Capture: Frame #036 > > Video Capture: Frame #037 > > Video Capture: Frame #038 > > Video Capture: Frame #039 > > Video Capture: Frame #040 > > Video Capture: Frame #041 > > Video Capture: Frame #042 > > Video Capture: Frame #043 > > Video Capture: Frame #044 > > Video Capture: Frame #045 > > Video Capture: Frame #046 > > Video Capture: Frame #047 > > Video Capture: Frame #048 > > Video Capture: Frame #049 > > Video Capture: Frame #050 > > Video Capture: Frame #051 > > Video Capture: Frame #052 > > Video Capture: Frame #053 > > Video Capture: Frame #054 > > Video Capture: Frame #055 > > Video Capture: Frame #056 > > Video Capture: Frame #057 > > Video Capture: Frame #058 > > Video Capture: Frame #059 > > > > test MMAP (no poll, CREATE_BUFS): OK > > > > Video Capture: Frame #000 (select) > > Video Capture: Frame #001 (select) > > Video Capture: Frame #002 (select) > > Video Capture: Frame #003 (select) > > Video Capture: Frame #004 (select) > > Video Capture: Frame #005 (select) > > Video Capture: Frame #006 (select) > > Video Capture: Frame #007 (select) > > Video Capture: Frame #008 (select) > > Video Capture: Frame #009 (select) > > Video Capture: Frame #010 (select) > > Video Capture: Frame #011 (select) > > Video Capture: Frame #012 (select) > > Video Capture: Frame #013 (select) > > Video Capture: Frame #014 (select) > > Video Capture: Frame #015 (select) > > Video Capture: Frame #016 (select) > > Video Capture: Frame #017 (select) > > Video Capture: Frame #018 (select) > > Video Capture: Frame #019 (select) > > Video Capture: Frame #020 (select) > > Video Capture: Frame #021 (select) > > Video Capture: Frame #022 (select) > > Video Capture: Frame #023 (select) > > Video Capture: Frame #024 (select) > > Video Capture: Frame #025 (select) > > Video Capture: Frame #026 (select) > > Video Capture: Frame #027 (select) > > Video Capture: Frame #028 (select) > > Video Capture: Frame #029 (select) > > Video Capture: Frame #030 (select) > > Video Capture: Frame #031 (select) > > Video Capture: Frame #032 (select) > > Video Capture: Frame #033 (select) > > Video Capture: Frame #034 (select) > > Video Capture: Frame #035 (select) > > Video Capture: Frame #036 (select) > > Video Capture: Frame #037 (select) > > Video Capture: Frame #038 (select) > > Video Capture: Frame #039 (select) > > Video Capture: Frame #040 (select) > > Video Capture: Frame #041 (select) > > Video Capture: Frame #042 (select) > > Video Capture: Frame #043 (select) > > Video Capture: Frame #044 (select) > > Video Capture: Frame #045 (select) > > Video Capture: Frame #046 (select) > > Video Capture: Frame #047 (select) > > Video Capture: Frame #048 (select) > > Video Capture: Frame #049 (select) > > Video Capture: Frame #050 (select) > > Video Capture: Frame #051 (select) > > Video Capture: Frame #052 (select) > > Video Capture: Frame #053 (select) > > Video Capture: Frame #054 (select) > > Video Capture: Frame #055 (select) > > Video Capture: Frame #056 (select) > > Video Capture: Frame #057 (select) > > Video Capture: Frame #058 (select) > > Video Capture: Frame #059 (select) > > > > test MMAP (select, CREATE_BUFS): OK > > > > Video Capture: Frame #000 (epoll) > > Video Capture: Frame #001 (epoll) > > Video Capture: Frame #002 (epoll) > > Video Capture: Frame #003 (epoll) > > Video Capture: Frame #004 (epoll) > > Video Capture: Frame #005 (epoll) > > Video Capture: Frame #006 (epoll) > > Video Capture: Frame #007 (epoll) > > Video Capture: Frame #008 (epoll) > > Video Capture: Frame #009 (epoll) > > Video Capture: Frame #010 (epoll) > > Video Capture: Frame #011 (epoll) > > Video Capture: Frame #012 (epoll) > > Video Capture: Frame #013 (epoll) > > Video Capture: Frame #014 (epoll) > > Video Capture: Frame #015 (epoll) > > Video Capture: Frame #016 (epoll) > > Video Capture: Frame #017 (epoll) > > Video Capture: Frame #018 (epoll) > > Video Capture: Frame #019 (epoll) > > Video Capture: Frame #020 (epoll) > > Video Capture: Frame #021 (epoll) > > Video Capture: Frame #022 (epoll) > > Video Capture: Frame #023 (epoll) > > Video Capture: Frame #024 (epoll) > > Video Capture: Frame #025 (epoll) > > Video Capture: Frame #026 (epoll) > > Video Capture: Frame #027 (epoll) > > Video Capture: Frame #028 (epoll) > > Video Capture: Frame #029 (epoll) > > Video Capture: Frame #030 (epoll) > > Video Capture: Frame #031 (epoll) > > Video Capture: Frame #032 (epoll) > > Video Capture: Frame #033 (epoll) > > Video Capture: Frame #034 (epoll) > > Video Capture: Frame #035 (epoll) > > Video Capture: Frame #036 (epoll) > > Video Capture: Frame #037 (epoll) > > Video Capture: Frame #038 (epoll) > > Video Capture: Frame #039 (epoll) > > Video Capture: Frame #040 (epoll) > > Video Capture: Frame #041 (epoll) > > Video Capture: Frame #042 (epoll) > > Video Capture: Frame #043 (epoll) > > Video Capture: Frame #044 (epoll) > > Video Capture: Frame #045 (epoll) > > Video Capture: Frame #046 (epoll) > > Video Capture: Frame #047 (epoll) > > Video Capture: Frame #048 (epoll) > > Video Capture: Frame #049 (epoll) > > Video Capture: Frame #050 (epoll) > > Video Capture: Frame #051 (epoll) > > Video Capture: Frame #052 (epoll) > > Video Capture: Frame #053 (epoll) > > Video Capture: Frame #054 (epoll) > > Video Capture: Frame #055 (epoll) > > Video Capture: Frame #056 (epoll) > > Video Capture: Frame #057 (epoll) > > Video Capture: Frame #058 (epoll) > > Video Capture: Frame #059 (epoll) > > > > test MMAP (epoll, CREATE_BUFS): OK > > > > Video Capture: Frame #000 > > Video Capture: Frame #001 > > Video Capture: Frame #002 > > Video Capture: Frame #003 > > Video Capture: Frame #004 > > Video Capture: Frame #005 > > Video Capture: Frame #006 > > Video Capture: Frame #007 > > Video Capture: Frame #008 > > Video Capture: Frame #009 > > Video Capture: Frame #010 > > Video Capture: Frame #011 > > Video Capture: Frame #012 > > Video Capture: Frame #013 > > Video Capture: Frame #014 > > Video Capture: Frame #015 > > Video Capture: Frame #016 > > Video Capture: Frame #017 > > Video Capture: Frame #018 > > Video Capture: Frame #019 > > Video Capture: Frame #020 > > Video Capture: Frame #021 > > Video Capture: Frame #022 > > Video Capture: Frame #023 > > Video Capture: Frame #024 > > Video Capture: Frame #025 > > Video Capture: Frame #026 > > Video Capture: Frame #027 > > Video Capture: Frame #028 > > Video Capture: Frame #029 > > Video Capture: Frame #030 > > Video Capture: Frame #031 > > Video Capture: Frame #032 > > Video Capture: Frame #033 > > Video Capture: Frame #034 > > Video Capture: Frame #035 > > Video Capture: Frame #036 > > Video Capture: Frame #037 > > Video Capture: Frame #038 > > Video Capture: Frame #039 > > Video Capture: Frame #040 > > Video Capture: Frame #041 > > Video Capture: Frame #042 > > Video Capture: Frame #043 > > Video Capture: Frame #044 > > Video Capture: Frame #045 > > Video Capture: Frame #046 > > Video Capture: Frame #047 > > Video Capture: Frame #048 > > Video Capture: Frame #049 > > Video Capture: Frame #050 > > Video Capture: Frame #051 > > Video Capture: Frame #052 > > Video Capture: Frame #053 > > Video Capture: Frame #054 > > Video Capture: Frame #055 > > Video Capture: Frame #056 > > Video Capture: Frame #057 > > Video Capture: Frame #058 > > Video Capture: Frame #059 > > > > test USERPTR (no poll): OK > > > > Video Capture: Frame #000 (select) > > Video Capture: Frame #001 (select) > > Video Capture: Frame #002 (select) > > Video Capture: Frame #003 (select) > > Video Capture: Frame #004 (select) > > Video Capture: Frame #005 (select) > > Video Capture: Frame #006 (select) > > Video Capture: Frame #007 (select) > > Video Capture: Frame #008 (select) > > Video Capture: Frame #009 (select) > > Video Capture: Frame #010 (select) > > Video Capture: Frame #011 (select) > > Video Capture: Frame #012 (select) > > Video Capture: Frame #013 (select) > > Video Capture: Frame #014 (select) > > Video Capture: Frame #015 (select) > > Video Capture: Frame #016 (select) > > Video Capture: Frame #017 (select) > > Video Capture: Frame #018 (select) > > Video Capture: Frame #019 (select) > > Video Capture: Frame #020 (select) > > Video Capture: Frame #021 (select) > > Video Capture: Frame #022 (select) > > Video Capture: Frame #023 (select) > > Video Capture: Frame #024 (select) > > Video Capture: Frame #025 (select) > > Video Capture: Frame #026 (select) > > Video Capture: Frame #027 (select) > > Video Capture: Frame #028 (select) > > Video Capture: Frame #029 (select) > > Video Capture: Frame #030 (select) > > Video Capture: Frame #031 (select) > > Video Capture: Frame #032 (select) > > Video Capture: Frame #033 (select) > > Video Capture: Frame #034 (select) > > Video Capture: Frame #035 (select) > > Video Capture: Frame #036 (select) > > Video Capture: Frame #037 (select) > > Video Capture: Frame #038 (select) > > Video Capture: Frame #039 (select) > > Video Capture: Frame #040 (select) > > Video Capture: Frame #041 (select) > > Video Capture: Frame #042 (select) > > Video Capture: Frame #043 (select) > > Video Capture: Frame #044 (select) > > Video Capture: Frame #045 (select) > > Video Capture: Frame #046 (select) > > Video Capture: Frame #047 (select) > > Video Capture: Frame #048 (select) > > Video Capture: Frame #049 (select) > > Video Capture: Frame #050 (select) > > Video Capture: Frame #051 (select) > > Video Capture: Frame #052 (select) > > Video Capture: Frame #053 (select) > > Video Capture: Frame #054 (select) > > Video Capture: Frame #055 (select) > > Video Capture: Frame #056 (select) > > Video Capture: Frame #057 (select) > > Video Capture: Frame #058 (select) > > Video Capture: Frame #059 (select) > > > > test USERPTR (select): OK > > test DMABUF: Cannot test, specify --expbuf-device > > > > Total for uvcvideo device /dev/video1: 58, Succeeded: 57, Failed: 1, > > Warnings: 0 > > > > As tested on the guest: > > > > $ v4l2-compliance -d0 -s --driver-name uvcvideo > > > > v4l2-compliance 1.33.0-5457, 64 bits, 64-bit time_t > > v4l2-compliance SHA: e7e240f546f3 2026-05-28 17:06:12 > > > > Compliance test for uvcvideo device (overridden from virtio-media) > > /dev/video0: > > > > Driver Info: > > Driver name : uvcvideo > > Card type : Logitech Webcam C925e > > Bus info : platform:virtio-media > > Driver version : 7.1.0 > > Capabilities : 0x84200001 > > Video Capture > > Streaming > > Extended Pix Format > > Device Capabilities > > Device Caps : 0x04200001 > > Video Capture > > Streaming > > Extended Pix Format > > > > Required ioctls: > > test VIDIOC_QUERYCAP: OK > > test invalid ioctls: OK > > > > Allow for multiple opens: > > test second /dev/video0 open: OK > > test VIDIOC_QUERYCAP: OK > > test VIDIOC_G/S_PRIORITY: OK > > test for unlimited opens: OK > > > > Debug ioctls: > > test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported) > > test VIDIOC_LOG_STATUS: OK (Not Supported) > > > > Input ioctls: > > test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported) > > test VIDIOC_G/S_FREQUENCY: OK (Not Supported) > > test VIDIOC_S_HW_FREQ_SEEK: OK > > test VIDIOC_ENUMAUDIO: OK (Not Supported) > > test VIDIOC_G/S/ENUMINPUT: OK > > test VIDIOC_G/S_AUDIO: OK (Not Supported) > > Inputs: 1 Audio Inputs: 0 Tuners: 0 > > > > Output ioctls: > > test VIDIOC_G/S_MODULATOR: OK (Not Supported) > > test VIDIOC_G/S_FREQUENCY: OK (Not Supported) > > test VIDIOC_ENUMAUDOUT: OK (Not Supported) > > test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported) > > test VIDIOC_G/S_AUDOUT: OK (Not Supported) > > Outputs: 0 Audio Outputs: 0 Modulators: 0 > > > > Input/Output configuration ioctls: > > test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported) > > test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported) > > test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported) > > test VIDIOC_G/S_EDID: OK (Not Supported) > > > > Control ioctls (Input 0): > > test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK > > test VIDIOC_QUERYCTRL: OK > > test VIDIOC_G/S_CTRL: OK > > fail: v4l2-test-controls.cpp(981): ret (got 22) > > test VIDIOC_G/S/TRY_EXT_CTRLS: FAIL > > test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK > > test VIDIOC_G/S_JPEGCOMP: OK (Not Supported) > > Standard Controls: 19 Private Controls: 0 > > > > Format ioctls (Input 0): > > test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK > > test VIDIOC_G/S_PARM: OK > > test VIDIOC_G_FBUF: OK (Not Supported) > > test VIDIOC_G_FMT: OK > > test VIDIOC_TRY_FMT: OK > > test VIDIOC_S_FMT: OK > > test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported) > > test Cropping: OK (Not Supported) > > test Composing: OK (Not Supported) > > test Scaling: OK (Not Supported) > > > > Codec ioctls (Input 0): > > test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported) > > test VIDIOC_G_ENC_INDEX: OK (Not Supported) > > test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported) > > > > Buffer ioctls (Input 0): > > test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK > > test CREATE_BUFS maximum buffers: OK > > test VIDIOC_REMOVE_BUFS: OK > > test VIDIOC_EXPBUF: OK (Not Supported) > > test Requests: OK (Not Supported) > > test blocking wait: OK > > > > Test input 0: > > > > Streaming ioctls: > > test read/write: OK (Not Supported) > > > > Video Capture: Frame #000 > > Video Capture: Frame #001 > > Video Capture: Frame #002 > > Video Capture: Frame #003 > > Video Capture: Frame #004 > > Video Capture: Frame #005 > > Video Capture: Frame #006 > > Video Capture: Frame #007 > > Video Capture: Frame #008 > > Video Capture: Frame #009 > > Video Capture: Frame #010 > > Video Capture: Frame #011 > > Video Capture: Frame #012 > > Video Capture: Frame #013 > > Video Capture: Frame #014 > > Video Capture: Frame #015 > > Video Capture: Frame #016 > > Video Capture: Frame #017 > > Video Capture: Frame #018 > > Video Capture: Frame #019 > > Video Capture: Frame #020 > > Video Capture: Frame #021 > > Video Capture: Frame #022 > > Video Capture: Frame #023 > > Video Capture: Frame #024 > > Video Capture: Frame #025 > > Video Capture: Frame #026 > > Video Capture: Frame #027 > > Video Capture: Frame #028 > > Video Capture: Frame #029 > > Video Capture: Frame #030 > > Video Capture: Frame #031 > > Video Capture: Frame #032 > > Video Capture: Frame #033 > > Video Capture: Frame #034 > > Video Capture: Frame #035 > > Video Capture: Frame #036 > > Video Capture: Frame #037 > > Video Capture: Frame #038 > > Video Capture: Frame #039 > > Video Capture: Frame #040 > > Video Capture: Frame #041 > > Video Capture: Frame #042 > > Video Capture: Frame #043 > > Video Capture: Frame #044 > > Video Capture: Frame #045 > > Video Capture: Frame #046 > > Video Capture: Frame #047 > > Video Capture: Frame #048 > > Video Capture: Frame #049 > > Video Capture: Frame #050 > > Video Capture: Frame #051 > > Video Capture: Frame #052 > > Video Capture: Frame #053 > > Video Capture: Frame #054 > > Video Capture: Frame #055 > > Video Capture: Frame #056 > > Video Capture: Frame #057 > > Video Capture: Frame #058 > > Video Capture: Frame #059 > > > > test MMAP (no poll, REQBUFS): OK > > > > Video Capture: Frame #000 (select) > > Video Capture: Frame #001 (select) > > Video Capture: Frame #002 (select) > > Video Capture: Frame #003 (select) > > Video Capture: Frame #004 (select) > > Video Capture: Frame #005 (select) > > Video Capture: Frame #006 (select) > > Video Capture: Frame #007 (select) > > Video Capture: Frame #008 (select) > > Video Capture: Frame #009 (select) > > Video Capture: Frame #010 (select) > > Video Capture: Frame #011 (select) > > Video Capture: Frame #012 (select) > > Video Capture: Frame #013 (select) > > Video Capture: Frame #014 (select) > > Video Capture: Frame #015 (select) > > Video Capture: Frame #016 (select) > > Video Capture: Frame #017 (select) > > Video Capture: Frame #018 (select) > > Video Capture: Frame #019 (select) > > Video Capture: Frame #020 (select) > > Video Capture: Frame #021 (select) > > Video Capture: Frame #022 (select) > > Video Capture: Frame #023 (select) > > Video Capture: Frame #024 (select) > > Video Capture: Frame #025 (select) > > Video Capture: Frame #026 (select) > > Video Capture: Frame #027 (select) > > Video Capture: Frame #028 (select) > > Video Capture: Frame #029 (select) > > Video Capture: Frame #030 (select) > > Video Capture: Frame #031 (select) > > Video Capture: Frame #032 (select) > > Video Capture: Frame #033 (select) > > Video Capture: Frame #034 (select) > > Video Capture: Frame #035 (select) > > Video Capture: Frame #036 (select) > > Video Capture: Frame #037 (select) > > Video Capture: Frame #038 (select) > > Video Capture: Frame #039 (select) > > Video Capture: Frame #040 (select) > > Video Capture: Frame #041 (select) > > Video Capture: Frame #042 (select) > > Video Capture: Frame #043 (select) > > Video Capture: Frame #044 (select) > > Video Capture: Frame #045 (select) > > Video Capture: Frame #046 (select) > > Video Capture: Frame #047 (select) > > Video Capture: Frame #048 (select) > > Video Capture: Frame #049 (select) > > Video Capture: Frame #050 (select) > > Video Capture: Frame #051 (select) > > Video Capture: Frame #052 (select) > > Video Capture: Frame #053 (select) > > Video Capture: Frame #054 (select) > > Video Capture: Frame #055 (select) > > Video Capture: Frame #056 (select) > > Video Capture: Frame #057 (select) > > Video Capture: Frame #058 (select) > > Video Capture: Frame #059 (select) > > > > test MMAP (select, REQBUFS): OK > > > > Video Capture: Frame #000 (epoll) > > Video Capture: Frame #001 (epoll) > > Video Capture: Frame #002 (epoll) > > Video Capture: Frame #003 (epoll) > > Video Capture: Frame #004 (epoll) > > Video Capture: Frame #005 (epoll) > > Video Capture: Frame #006 (epoll) > > Video Capture: Frame #007 (epoll) > > Video Capture: Frame #008 (epoll) > > Video Capture: Frame #009 (epoll) > > Video Capture: Frame #010 (epoll) > > Video Capture: Frame #011 (epoll) > > Video Capture: Frame #012 (epoll) > > Video Capture: Frame #013 (epoll) > > Video Capture: Frame #014 (epoll) > > Video Capture: Frame #015 (epoll) > > Video Capture: Frame #016 (epoll) > > Video Capture: Frame #017 (epoll) > > Video Capture: Frame #018 (epoll) > > Video Capture: Frame #019 (epoll) > > Video Capture: Frame #020 (epoll) > > Video Capture: Frame #021 (epoll) > > Video Capture: Frame #022 (epoll) > > Video Capture: Frame #023 (epoll) > > Video Capture: Frame #024 (epoll) > > Video Capture: Frame #025 (epoll) > > Video Capture: Frame #026 (epoll) > > Video Capture: Frame #027 (epoll) > > Video Capture: Frame #028 (epoll) > > Video Capture: Frame #029 (epoll) > > Video Capture: Frame #030 (epoll) > > Video Capture: Frame #031 (epoll) > > Video Capture: Frame #032 (epoll) > > Video Capture: Frame #033 (epoll) > > Video Capture: Frame #034 (epoll) > > Video Capture: Frame #035 (epoll) > > Video Capture: Frame #036 (epoll) > > Video Capture: Frame #037 (epoll) > > Video Capture: Frame #038 (epoll) > > Video Capture: Frame #039 (epoll) > > Video Capture: Frame #040 (epoll) > > Video Capture: Frame #041 (epoll) > > Video Capture: Frame #042 (epoll) > > Video Capture: Frame #043 (epoll) > > Video Capture: Frame #044 (epoll) > > Video Capture: Frame #045 (epoll) > > Video Capture: Frame #046 (epoll) > > Video Capture: Frame #047 (epoll) > > Video Capture: Frame #048 (epoll) > > Video Capture: Frame #049 (epoll) > > Video Capture: Frame #050 (epoll) > > Video Capture: Frame #051 (epoll) > > Video Capture: Frame #052 (epoll) > > Video Capture: Frame #053 (epoll) > > Video Capture: Frame #054 (epoll) > > Video Capture: Frame #055 (epoll) > > Video Capture: Frame #056 (epoll) > > Video Capture: Frame #057 (epoll) > > Video Capture: Frame #058 (epoll) > > Video Capture: Frame #059 (epoll) > > > > test MMAP (epoll, REQBUFS): OK > > > > Video Capture: Frame #000 > > Video Capture: Frame #001 > > Video Capture: Frame #002 > > Video Capture: Frame #003 > > Video Capture: Frame #004 > > Video Capture: Frame #005 > > Video Capture: Frame #006 > > Video Capture: Frame #007 > > Video Capture: Frame #008 > > Video Capture: Frame #009 > > Video Capture: Frame #010 > > Video Capture: Frame #011 > > Video Capture: Frame #012 > > Video Capture: Frame #013 > > Video Capture: Frame #014 > > Video Capture: Frame #015 > > Video Capture: Frame #016 > > Video Capture: Frame #017 > > Video Capture: Frame #018 > > Video Capture: Frame #019 > > Video Capture: Frame #020 > > Video Capture: Frame #021 > > Video Capture: Frame #022 > > Video Capture: Frame #023 > > Video Capture: Frame #024 > > Video Capture: Frame #025 > > Video Capture: Frame #026 > > Video Capture: Frame #027 > > Video Capture: Frame #028 > > Video Capture: Frame #029 > > Video Capture: Frame #030 > > Video Capture: Frame #031 > > Video Capture: Frame #032 > > Video Capture: Frame #033 > > Video Capture: Frame #034 > > Video Capture: Frame #035 > > Video Capture: Frame #036 > > Video Capture: Frame #037 > > Video Capture: Frame #038 > > Video Capture: Frame #039 > > Video Capture: Frame #040 > > Video Capture: Frame #041 > > Video Capture: Frame #042 > > Video Capture: Frame #043 > > Video Capture: Frame #044 > > Video Capture: Frame #045 > > Video Capture: Frame #046 > > Video Capture: Frame #047 > > Video Capture: Frame #048 > > Video Capture: Frame #049 > > Video Capture: Frame #050 > > Video Capture: Frame #051 > > Video Capture: Frame #052 > > Video Capture: Frame #053 > > Video Capture: Frame #054 > > Video Capture: Frame #055 > > Video Capture: Frame #056 > > Video Capture: Frame #057 > > Video Capture: Frame #058 > > Video Capture: Frame #059 > > > > test MMAP (no poll, CREATE_BUFS): OK > > > > Video Capture: Frame #000 (select) > > Video Capture: Frame #001 (select) > > Video Capture: Frame #002 (select) > > Video Capture: Frame #003 (select) > > Video Capture: Frame #004 (select) > > Video Capture: Frame #005 (select) > > Video Capture: Frame #006 (select) > > Video Capture: Frame #007 (select) > > Video Capture: Frame #008 (select) > > Video Capture: Frame #009 (select) > > Video Capture: Frame #010 (select) > > Video Capture: Frame #011 (select) > > Video Capture: Frame #012 (select) > > Video Capture: Frame #013 (select) > > Video Capture: Frame #014 (select) > > Video Capture: Frame #015 (select) > > Video Capture: Frame #016 (select) > > Video Capture: Frame #017 (select) > > Video Capture: Frame #018 (select) > > Video Capture: Frame #019 (select) > > Video Capture: Frame #020 (select) > > Video Capture: Frame #021 (select) > > Video Capture: Frame #022 (select) > > Video Capture: Frame #023 (select) > > Video Capture: Frame #024 (select) > > Video Capture: Frame #025 (select) > > Video Capture: Frame #026 (select) > > Video Capture: Frame #027 (select) > > Video Capture: Frame #028 (select) > > Video Capture: Frame #029 (select) > > Video Capture: Frame #030 (select) > > Video Capture: Frame #031 (select) > > Video Capture: Frame #032 (select) > > Video Capture: Frame #033 (select) > > Video Capture: Frame #034 (select) > > Video Capture: Frame #035 (select) > > Video Capture: Frame #036 (select) > > Video Capture: Frame #037 (select) > > Video Capture: Frame #038 (select) > > Video Capture: Frame #039 (select) > > Video Capture: Frame #040 (select) > > Video Capture: Frame #041 (select) > > Video Capture: Frame #042 (select) > > Video Capture: Frame #043 (select) > > Video Capture: Frame #044 (select) > > Video Capture: Frame #045 (select) > > Video Capture: Frame #046 (select) > > Video Capture: Frame #047 (select) > > Video Capture: Frame #048 (select) > > Video Capture: Frame #049 (select) > > Video Capture: Frame #050 (select) > > Video Capture: Frame #051 (select) > > Video Capture: Frame #052 (select) > > Video Capture: Frame #053 (select) > > Video Capture: Frame #054 (select) > > Video Capture: Frame #055 (select) > > Video Capture: Frame #056 (select) > > Video Capture: Frame #057 (select) > > Video Capture: Frame #058 (select) > > Video Capture: Frame #059 (select) > > > > test MMAP (select, CREATE_BUFS): OK > > > > Video Capture: Frame #000 (epoll) > > Video Capture: Frame #001 (epoll) > > Video Capture: Frame #002 (epoll) > > Video Capture: Frame #003 (epoll) > > Video Capture: Frame #004 (epoll) > > Video Capture: Frame #005 (epoll) > > Video Capture: Frame #006 (epoll) > > Video Capture: Frame #007 (epoll) > > Video Capture: Frame #008 (epoll) > > Video Capture: Frame #009 (epoll) > > Video Capture: Frame #010 (epoll) > > Video Capture: Frame #011 (epoll) > > Video Capture: Frame #012 (epoll) > > Video Capture: Frame #013 (epoll) > > Video Capture: Frame #014 (epoll) > > Video Capture: Frame #015 (epoll) > > Video Capture: Frame #016 (epoll) > > Video Capture: Frame #017 (epoll) > > Video Capture: Frame #018 (epoll) > > Video Capture: Frame #019 (epoll) > > Video Capture: Frame #020 (epoll) > > Video Capture: Frame #021 (epoll) > > Video Capture: Frame #022 (epoll) > > Video Capture: Frame #023 (epoll) > > Video Capture: Frame #024 (epoll) > > Video Capture: Frame #025 (epoll) > > Video Capture: Frame #026 (epoll) > > Video Capture: Frame #027 (epoll) > > Video Capture: Frame #028 (epoll) > > Video Capture: Frame #029 (epoll) > > Video Capture: Frame #030 (epoll) > > Video Capture: Frame #031 (epoll) > > Video Capture: Frame #032 (epoll) > > Video Capture: Frame #033 (epoll) > > Video Capture: Frame #034 (epoll) > > Video Capture: Frame #035 (epoll) > > Video Capture: Frame #036 (epoll) > > Video Capture: Frame #037 (epoll) > > Video Capture: Frame #038 (epoll) > > Video Capture: Frame #039 (epoll) > > Video Capture: Frame #040 (epoll) > > Video Capture: Frame #041 (epoll) > > Video Capture: Frame #042 (epoll) > > Video Capture: Frame #043 (epoll) > > Video Capture: Frame #044 (epoll) > > Video Capture: Frame #045 (epoll) > > Video Capture: Frame #046 (epoll) > > Video Capture: Frame #047 (epoll) > > Video Capture: Frame #048 (epoll) > > Video Capture: Frame #049 (epoll) > > Video Capture: Frame #050 (epoll) > > Video Capture: Frame #051 (epoll) > > Video Capture: Frame #052 (epoll) > > Video Capture: Frame #053 (epoll) > > Video Capture: Frame #054 (epoll) > > Video Capture: Frame #055 (epoll) > > Video Capture: Frame #056 (epoll) > > Video Capture: Frame #057 (epoll) > > Video Capture: Frame #058 (epoll) > > Video Capture: Frame #059 (epoll) > > > > test MMAP (epoll, CREATE_BUFS): OK > > test USERPTR (no poll): OK (Not Supported) > > test USERPTR (select): OK (Not Supported) > > test DMABUF (no poll): OK (Not Supported) > > test DMABUF (select): OK (Not Supported) > > > > Total for uvcvideo device /dev/video0: 59, Succeeded: 58, Failed: 1, > > Warnings: 0 > > > > --- > > Changes in v4: > > - Rebased on top of v7.1-rc1 > > - Replace usages of filep->private_data with file_to_v4l2_fh() > > throughout the driver > > - Link to v3: > > https://lore.kernel.org/r/[email protected] > > > > Changes in v3: > > - Rebased on top of v6.15-rc1 and removes obsolete control callbacks. > > - Link to v2: > > https://lore.kernel.org/r/[email protected] > > > > Changes in v2: > > - Fixed kernel test robot and media CI warnings (ignored a few false > > positives). > > - Changed in-driver email address to personal one since my Google one > > will soon become invalid. > > - Link to v1: > > https://lore.kernel.org/r/[email protected] > > > > Brian Daniels (8): > > media: virtio: Add protocol > > media: virtio: Add virtio-media driver structs and function > > declarations > > media: virtio: Add virtio-media session related structures > > media: virtio: Add scatterlist_builder > > media: virtio: Add virtio_media_ioctls > > media: virtio: Add virtio_media_driver > > media: virtio: Add virtio-media to the build system > > media: virtio: Add MAINTAINERS entry > > > > MAINTAINERS | 6 + > > drivers/media/Kconfig | 13 + > > drivers/media/Makefile | 2 + > > drivers/media/virtio/Makefile | 8 + > > drivers/media/virtio/protocol.h | 287 +++++ > > drivers/media/virtio/scatterlist_builder.c | 574 +++++++++ > > drivers/media/virtio/scatterlist_builder.h | 112 ++ > > drivers/media/virtio/session.h | 130 ++ > > drivers/media/virtio/virtio_media.h | 95 ++ > > drivers/media/virtio/virtio_media_driver.c | 959 ++++++++++++++ > > drivers/media/virtio/virtio_media_ioctls.c | 1338 ++++++++++++++++++++ > > 11 files changed, 3524 insertions(+) > > create mode 100644 drivers/media/virtio/Makefile > > create mode 100644 drivers/media/virtio/protocol.h > > create mode 100644 drivers/media/virtio/scatterlist_builder.c > > create mode 100644 drivers/media/virtio/scatterlist_builder.h > > create mode 100644 drivers/media/virtio/session.h > > create mode 100644 drivers/media/virtio/virtio_media.h > > create mode 100644 drivers/media/virtio/virtio_media_driver.c > > create mode 100644 drivers/media/virtio/virtio_media_ioctls.c > > > > > > base-commit: 06cb687a5132fcffe624c0070576ab852ac6b568
