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SubjectRe: [EXT] Re: [PATCH 0/5] Add V4L2 driver for i.MX8 JPEG Encoder/Decoder
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On 11/6/19 5:45 PM, Mirela Rabulea wrote:
> Hi Hans,
>
> On Mi, 2019-11-06 at 16:37 +0100, Hans Verkuil wrote:
>> That's too old. Always test with the latest version from the v4l-
>> utils git
>> repo (git://linuxtv.org/v4l-utils.git). v4l2-compliance is
>> continually
>> improved, so driver testing should always be done with the latest
>> version.
>>
>> For the JPEG encoder you can add the -s option to v4l2-compliance.
>> Unfortunately,
>> the streaming tests for JPEG decoders in v4l2-compliance are not well
>> supported
>> at the moment, so you can't use -s there.
>>
>> Please provide the full output of the v4l2-compliance command as
>> well, I'd
>> like to see the actual output.
>
> Thanks for the reply. I updated to the latest v4l-utils, basic tests
> pass, but I have issues with the streaming tests (-s). I'll work on
> those, it might take a while.
> For the reference, here's the actual output, for both the encoder &
> decoder.
>
>
> root@imx8qxpmek:/unit_tests/JPEG# ./v4l2-compliance -d /dev/video1 -s
> v4l2-compliance SHA: 6c415a11fceb32067cdb5c2e33f90dbf018182a4, 64 bits
>
> Compliance test for mxc-jpeg decode device /dev/video1:
>
> Driver Info:
> Driver name      : mxc-jpeg decode
> Card type        : mxc-jpeg decoder
> Bus info         : platform:58450000.jpegenc
> Driver version   : 5.4.0
> Capabilities     : 0x84204000
> Video Memory-to-Memory Multiplanar
> Streaming
> Extended Pix Format
> Device Capabilities
> Device Caps      : 0x04204000
> Video Memory-to-Memory Multiplanar
> Streaming
> Extended Pix Format
> Detected JPEG Encoder
>
> Required ioctls:
> test VIDIOC_QUERYCAP: 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 (Not Supported)
> test VIDIOC_G/S_AUDIO: OK (Not Supported)
> Inputs: 0 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:
> test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK (Not Supported)
> test VIDIOC_QUERYCTRL: OK (Not Supported)
> test VIDIOC_G/S_CTRL: OK (Not Supported)
> test VIDIOC_G/S/TRY_EXT_CTRLS: OK (Not Supported)
> test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK (Not Supported)
> test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
> Standard Controls: 0 Private Controls: 0
>
> Format ioctls:
> test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
> test VIDIOC_G/S_PARM: OK (Not Supported)
> 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

The presence of a scaler is suspicious: is the encoder indeed
capable of scaling? I suspect this is a bug.

>
> Codec ioctls:
> test VIDIOC_(TRY_)ENCODER_CMD: OK

The presence of this...

> test VIDIOC_G_ENC_INDEX: OK (Not Supported)
> test VIDIOC_(TRY_)DECODER_CMD: OK

...and this is also strange for a JPEG codec. These ioctls are typically only
needed for MPEG/H264/etc. codecs, and not for a simple JPEG codec.

The same issues are found for the JPEG decoder.

>
> Buffer ioctls:
> test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
> test VIDIOC_EXPBUF: OK
> test Requests: OK (Not Supported)
>
> Test input 0:
>
> Streaming ioctls:
> test read/write: OK (Not Supported)
> test blocking wait: OK
> fail: v4l2-test-buffers.cpp(254): g_field() ==
> V4L2_FIELD_ANY

The driver shall never return FIELD_ANY. This needs to be FIELD_NONE.

Regards,

Hans

> fail: v4l2-test-buffers.cpp(1266): buf.qbuf(node)
> test MMAP (no poll): FAIL
> fail: v4l2-test-buffers.cpp(254): g_field() ==
> V4L2_FIELD_ANY
> fail: v4l2-test-buffers.cpp(1266): buf.qbuf(node)
> test MMAP (select): FAIL
> fail: v4l2-test-buffers.cpp(254): g_field() ==
> V4L2_FIELD_ANY
> fail: v4l2-test-buffers.cpp(1266): buf.qbuf(node)
> test MMAP (epoll): FAIL
> fail: v4l2-test-buffers.cpp(1492): ret && ret != ENOTTY
> fail: v4l2-test-buffers.cpp(1580): setupUserPtr(node,
> q)
> test USERPTR (no poll): FAIL
> fail: v4l2-test-buffers.cpp(1492): ret && ret != ENOTTY
> fail: v4l2-test-buffers.cpp(1580): setupUserPtr(node,
> q)
> test USERPTR (select): FAIL
> test DMABUF: Cannot test, specify --expbuf-device
>
> Total for mxc-jpeg decode device /dev/video1: 51, Succeeded: 46,
> Failed: 5, Warnings: 0
>
>
>
> root@imx8qxpmek:/unit_tests/JPEG# ./v4l2-compliance -d /dev/video0 -s
> v4l2-compliance SHA: 6c415a11fceb32067cdb5c2e33f90dbf018182a4, 64 bits
>
> Compliance test for mxc-jpeg decode device /dev/video0:
>
> Driver Info:
> Driver name      : mxc-jpeg decode
> Card type        : mxc-jpeg decoder
> Bus info         : platform:58400000.jpegdec
> Driver version   : 5.4.0
> Capabilities     : 0x84204000
> Video Memory-to-Memory Multiplanar
> Streaming
> Extended Pix Format
> Device Capabilities
> Device Caps      : 0x04204000
> Video Memory-to-Memory Multiplanar
> Streaming
> Extended Pix Format
> Detected JPEG Decoder
>
> Required ioctls:
> test VIDIOC_QUERYCAP: 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 (Not Supported)
> test VIDIOC_ENUMAUDIO: OK (Not Supported)
> test VIDIOC_G/S/ENUMINPUT: OK (Not Supported)
> test VIDIOC_G/S_AUDIO: OK (Not Supported)
> Inputs: 0 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:
> test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK (Not Supported)
> test VIDIOC_QUERYCTRL: OK (Not Supported)
> test VIDIOC_G/S_CTRL: OK (Not Supported)
> test VIDIOC_G/S/TRY_EXT_CTRLS: OK (Not Supported)
> test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK (Not Supported)
> test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
> Standard Controls: 0 Private Controls: 0
>
> Format ioctls:
> test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
> test VIDIOC_G/S_PARM: OK (Not Supported)
> 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
>
> Codec ioctls:
> test VIDIOC_(TRY_)ENCODER_CMD: OK
> test VIDIOC_G_ENC_INDEX: OK (Not Supported)
> test VIDIOC_(TRY_)DECODER_CMD: OK
>
> Buffer ioctls:
> test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
> test VIDIOC_EXPBUF: OK
> test Requests: OK (Not Supported)
>
> Test input 0:
>
> Streaming ioctls:
> test read/write: OK (Not Supported)
> test blocking wait: OK
> fail: v4l2-test-buffers.cpp(254): g_field() ==
> V4L2_FIELD_ANY
> fail: v4l2-test-buffers.cpp(1266): buf.qbuf(node)
> test MMAP (no poll): FAIL
> fail: v4l2-test-buffers.cpp(254): g_field() ==
> V4L2_FIELD_ANY
> fail: v4l2-test-buffers.cpp(1266): buf.qbuf(node)
> test MMAP (select): FAIL
> fail: v4l2-test-buffers.cpp(254): g_field() ==
> V4L2_FIELD_ANY
> fail: v4l2-test-buffers.cpp(1266): buf.qbuf(node)
> test MMAP (epoll): FAIL
> fail: v4l2-test-buffers.cpp(1492): ret && ret != ENOTTY
> fail: v4l2-test-buffers.cpp(1580): setupUserPtr(node,
> q)
> test USERPTR (no poll): FAIL
> fail: v4l2-test-buffers.cpp(1492): ret && ret != ENOTTY
> fail: v4l2-test-buffers.cpp(1580): setupUserPtr(node,
> q)
> test USERPTR (select): FAIL
> test DMABUF: Cannot test, specify --expbuf-device
>
> Total for mxc-jpeg decode device /dev/video0: 51, Succeeded: 46,
> Failed: 5, Warnings: 0
>
>
>

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