MPEG2 decoder failed with MFX_IMPL_HARDWARE

[chi_xu]

Hi,

I am trying to use decoder to decode mpeg2 video stream.I use the sample_decode in MediaSamples_Linux_6.0.16043175.175.

First, i try to run the sample_decode like: ./sample_decode_drm mpeg2 -i test.mpg -o output.yuv -hw. It works well.

Then, i run the sample_decode's code to decode the stream.It works well when i set initPar.Implementation = MFX_IMPL_SOFTWARE.If i set initPar.Implementation = MFX_IMPL_HARDWARE,it returns on error at sts = m_pmfxDEC->Init(&m_mfxVideoParams) with error code -15.

Here is some informations about my system.

[xc@localhost x64]$ uname -r
3.10.0-229.1.2.39163.MSSr4.el7.centos.x86_64

[xc@localhost x64]$ ls -l /dev/dri/
total 0
crw-rw----+ 1 root video 226,   0 1月  14 17:08 card0
crw-------. 1 root video 226,  64 1月  14 17:08 controlD64
crw-rw----. 1 root video 226, 128 1月  14 17:08 renderD128

[xc@localhost x64]$ vainfo
libva info: VA-API version 0.35.0
libva info: va_getDriverName() returns 0
libva info: User requested driver 'iHD'
libva info: Trying to open /opt/intel/mediasdk/lib64/iHD_drv_video.so
libva info: Found init function __vaDriverInit_0_32
libva info: va_openDriver() returns 0
vainfo: VA-API version: 0.35 (libva 1.3.1)
vainfo: Driver version: 16.4.2.1.39163-ubit
vainfo: Supported profile and entrypoints
      VAProfileNone                   :    VAEntrypointVideoProc
      VAProfileNone                   :    <unknown entrypoint>
      VAProfileMPEG2Simple            :    VAEntrypointEncSlice
      VAProfileMPEG2Simple            :    VAEntrypointVLD
      VAProfileMPEG2Main              :    VAEntrypointEncSlice
      VAProfileMPEG2Main              :    VAEntrypointVLD
      VAProfileH264Baseline           :    VAEntrypointEncSlice
      VAProfileH264Baseline           :    <unknown entrypoint>
      VAProfileH264Baseline           :    <unknown entrypoint>
      VAProfileH264Main               :    VAEntrypointVLD
      VAProfileH264Main               :    VAEntrypointEncSlice
      VAProfileH264Main               :    <unknown entrypoint>
      VAProfileH264Main               :    <unknown entrypoint>
      VAProfileH264High               :    VAEntrypointVLD
      VAProfileH264High               :    VAEntrypointEncSlice
      VAProfileH264High               :    <unknown entrypoint>
      VAProfileH264High               :    <unknown entrypoint>
      VAProfileVC1Simple              :    VAEntrypointVLD
      VAProfileVC1Main                :    VAEntrypointVLD
      VAProfileVC1Advanced            :    VAEntrypointVLD
      VAProfileJPEGBaseline           :    VAEntrypointVLD
      VAProfileJPEGBaseline           :    VAEntrypointEncPicture
      VAProfileH264ConstrainedBaseline:    VAEntrypointVLD
      VAProfileH264ConstrainedBaseline:    VAEntrypointEncSlice
      VAProfileH264ConstrainedBaseline:    <unknown entrypoint>
      VAProfileH264ConstrainedBaseline:    <unknown entrypoint>
      VAProfileVP8Version0_3          :    VAEntrypointEncSlice
      VAProfileVP8Version0_3          :    VAEntrypointVLD
      VAProfileVP8Version0_3          :    <unknown entrypoint>

Thanks.

[Jiandong_Z_Intel]

Hi There,

Because sample_decode works well for, I think your MSS setup okay.

The error -15 you can find it in mfxdefs.h

MFX_ERR_INVALID_VIDEO_PARAM         = -15,  /* invalid video parameters */

Have you check your setting of m_mfxVideoParams ?

Have you notice following in your code ?

 // in case of HW accelerated decode frames must be allocated prior to decoder initialization
    sts = AllocFrames();
    MSDK_CHECK_RESULT(sts, MFX_ERR_NONE, sts);

Thanks,

Zachary

[chi_xu]

Hi Zachary,

1.I think the setting of m_mfxVideoParams is right because i only set pParams->videoType = MFX_CODEC_MPEG2 and initPar.Implementation = MFX_IMPL_HARDWARE.It works well when i set initPar.Implementation = MFX_IMPL_SOFTWARE.

2.It has no error before the sts = m_pmfxDEC->Init(&m_mfxVideoParams).Here is part of the code.

    // create device and allocator
    sts = CreateAllocator();
    MSDK_CHECK_RESULT(sts, MFX_ERR_NONE, sts);

    // in case of HW accelerated decode frames must be allocated prior to decoder initialization
    sts = AllocFrames();
    MSDK_CHECK_RESULT(sts, MFX_ERR_NONE, sts);

    sts = m_pmfxDEC->Init(&m_mfxVideoParams);

    if (MFX_WRN_PARTIAL_ACCELERATION == sts)
    {
        msdk_printf(MSDK_STRING("WARNING: partial acceleration\n"));
        MSDK_IGNORE_MFX_STS(sts, MFX_WRN_PARTIAL_ACCELERATION);
    }
    MSDK_CHECK_RESULT(sts, MFX_ERR_NONE, sts);

Thanks.

[Jiandong_Z_Intel]

Hi,

Can you debug the programs and compare the different m_mfxVideoParams between your program and sample_decode when decode mpeg2 ?  Because sample_decode  works for you, so you can make it as your reference.

Thanks,

Zachary

[chi_xu]

Hi Zachary,

I get some settings of m_mfxVideoParams and compare it with the sample_decode.They are all the same.

reserved[0] = 0, reserved[1] = 0, reserved[2] = 0, reserved3 = 0,
AsyncDepth = 4,Protected = 0, IOPattern = 32, NumExtParam = 0, reserved2 = 0,
INFOMFX: LowPower =0 , BRCParamMultiplier =0, CodeId = 843534413, CodecProfile = 64,
    CodecLevel = 8, NumThread = 0, DecodedOrder = 0, ExtendedPicStruct = 0,
    TimeStampCalc = 0, SliceGroupsPresent = 0, MaxDecFrameBuffering = 0, reserved2[0] = 0.

Is there some settings different between software and hardware?I don't know why it works well in software mode.

Thanks.

[Jiandong_Z_Intel]

Hi,

There are a table list which parameter should be set when do the decode in page 195 Intel Media SDK, Can you also check decode part of this table.

Another, there is MSDK /opt/intel/mediasdk/tools/tracer for trace MSDK parameter, you can reference README in /opt/intel/mediasdk/tools/tracer. use this tool you can compare the parameters between your parameter and MSDK sample_decode

Thanks,

Zachary