C++ PortVideo::SetPortBitrateParam方法代码示例

OMX_ERRORTYPE OMXVideoEncoderBase::SetParamVideoBitrate(OMX_PTR pStructure) {
    OMX_ERRORTYPE ret;
    OMX_VIDEO_PARAM_BITRATETYPE *p = (OMX_VIDEO_PARAM_BITRATETYPE *)pStructure;
    CHECK_TYPE_HEADER(p);
    CHECK_PORT_INDEX(p, OUTPORT_INDEX);
    CHECK_SET_PARAM_STATE();
    OMX_U32 index = p->nPortIndex;
    PortVideo *port = NULL;
    // This disables other type of bitrate control mechanism
    // TODO: check if it is desired

    // TODO: can we override  mParamBitrate.nPortIndex (See SetPortBitrateParam)
    mParamBitrate.eControlRate = p->eControlRate;
    mParamBitrate.nTargetBitrate = p->nTargetBitrate;

    port = static_cast<PortVideo *>(ports[index]);
    ret = port->SetPortBitrateParam(p, false);
    return OMX_ErrorNone;
}

//.........这里部分代码省略.........
    mConfigIntelBitrate.nMaxEncodeBitrate = 0; // Maximum bitrate
    mConfigIntelBitrate.nTargetPercentage = 95; // Target bitrate as percentage of maximum bitrate; e.g. 95 is 95%
    mConfigIntelBitrate.nWindowSize = 0; // Window size in milliseconds allowed for bitrate to reach target
    mConfigIntelBitrate.nInitialQP = 0;  // Initial QP for I frames
    mConfigIntelBitrate.nMinQP = 0;
    mConfigIntelBitrate.nMaxQP = 0;
    mConfigIntelBitrate.nFrameRate = 0;
    mConfigIntelBitrate.nTemporalID = 0;

    // OMX_VIDEO_CONFIG_BITRATETYPE
    memset(&mConfigBitrate, 0, sizeof(mConfigBitrate));
    SetTypeHeader(&mConfigBitrate, sizeof(mConfigBitrate));
    mConfigBitrate.nPortIndex = OUTPORT_INDEX;
    mConfigBitrate.nEncodeBitrate = 0; // Maximum bitrate

    // OMX_VIDEO_CONFIG_INTEL_AIR
    memset(&mConfigIntelAir, 0, sizeof(mConfigIntelAir));
    SetTypeHeader(&mConfigIntelAir, sizeof(mConfigIntelAir));
    mConfigIntelAir.nPortIndex = OUTPORT_INDEX;
    mConfigIntelAir.bAirEnable = OMX_FALSE;
    mConfigIntelAir.bAirAuto = OMX_FALSE;
    mConfigIntelAir.nAirMBs = 0;
    mConfigIntelAir.nAirThreshold = 0;

    // OMX_VIDEO_CONFIG_INTEL_AIR
    memset(&mParamVideoRefresh, 0, sizeof(mParamVideoRefresh));
    SetTypeHeader(&mParamVideoRefresh, sizeof(mParamVideoRefresh));
    mParamVideoRefresh.nPortIndex = OUTPORT_INDEX;
    mParamVideoRefresh.eRefreshMode = OMX_VIDEO_IntraRefreshAdaptive;
    mParamVideoRefresh.nAirMBs = 0;
    mParamVideoRefresh.nAirRef = 0;
    mParamVideoRefresh.nCirMBs = 0;
    
    // OMX_CONFIG_FRAMERATETYPE
    memset(&mConfigFramerate, 0, sizeof(mConfigFramerate));
    SetTypeHeader(&mConfigFramerate, sizeof(mConfigFramerate));
    mConfigFramerate.nPortIndex = OUTPORT_INDEX;
    mConfigFramerate.xEncodeFramerate =  0; // Q16 format

    // OMX_VIDEO_PARAM_INTEL_ADAPTIVE_SLICE_CONTROL
    memset(&mParamIntelAdaptiveSliceControl, 0, sizeof(mParamIntelAdaptiveSliceControl));
    SetTypeHeader(&mParamIntelAdaptiveSliceControl, sizeof(mParamIntelAdaptiveSliceControl));
    mParamIntelAdaptiveSliceControl.nPortIndex = OUTPORT_INDEX;
    mParamIntelAdaptiveSliceControl.bEnable = OMX_FALSE;
    mParamIntelAdaptiveSliceControl.nMinPSliceNumber = 5;
    mParamIntelAdaptiveSliceControl.nNumPFramesToSkip = 8;
    mParamIntelAdaptiveSliceControl.nSliceSizeThreshold = 1200;

    // OMX_VIDEO_PARAM_PROFILELEVELTYPE
    memset(&mParamProfileLevel, 0, sizeof(mParamProfileLevel));
    SetTypeHeader(&mParamProfileLevel, sizeof(mParamProfileLevel));
    mParamProfileLevel.nPortIndex = OUTPORT_INDEX;
    mParamProfileLevel.eProfile = 0; // undefined profile, to be overridden
    mParamProfileLevel.eLevel = 0; // undefined level, to be overridden

    // OMX_PARAM_PORTDEFINITIONTYPE
    OMX_PARAM_PORTDEFINITIONTYPE paramPortDefinitionOutput;
    memset(&paramPortDefinitionOutput, 0, sizeof(paramPortDefinitionOutput));
    SetTypeHeader(&paramPortDefinitionOutput, sizeof(paramPortDefinitionOutput));
    paramPortDefinitionOutput.nPortIndex = OUTPORT_INDEX;
    paramPortDefinitionOutput.eDir = OMX_DirOutput;
    paramPortDefinitionOutput.nBufferCountActual = OUTPORT_ACTUAL_BUFFER_COUNT; // to be overridden
    paramPortDefinitionOutput.nBufferCountMin = OUTPORT_MIN_BUFFER_COUNT;
    paramPortDefinitionOutput.nBufferSize = OUTPORT_BUFFER_SIZE; // to be overridden
    paramPortDefinitionOutput.bEnabled = OMX_TRUE;
    paramPortDefinitionOutput.bPopulated = OMX_FALSE;
    paramPortDefinitionOutput.eDomain = OMX_PortDomainVideo;
    paramPortDefinitionOutput.format.video.cMIMEType = NULL; // to be overridden
    paramPortDefinitionOutput.format.video.pNativeRender = NULL;
    paramPortDefinitionOutput.format.video.nFrameWidth = 176;
    paramPortDefinitionOutput.format.video.nFrameHeight = 144;
    paramPortDefinitionOutput.format.video.nStride = 176;
    paramPortDefinitionOutput.format.video.nSliceHeight = 144;
    paramPortDefinitionOutput.format.video.nBitrate = 64000;
    paramPortDefinitionOutput.format.video.xFramerate = 15 << 16;
    paramPortDefinitionOutput.format.video.bFlagErrorConcealment = OMX_FALSE;
    paramPortDefinitionOutput.format.video.eCompressionFormat = OMX_VIDEO_CodingUnused; // to be overridden
    paramPortDefinitionOutput.format.video.eColorFormat = OMX_COLOR_FormatUnused;
    paramPortDefinitionOutput.format.video.pNativeWindow = NULL;
    paramPortDefinitionOutput.bBuffersContiguous = OMX_FALSE;
    paramPortDefinitionOutput.nBufferAlignment = 0;

    InitOutputPortFormatSpecific(&paramPortDefinitionOutput);

    port->SetPortDefinition(&paramPortDefinitionOutput, true);
    port->SetPortBitrateParam(&mParamBitrate, true);

    // OMX_VIDEO_PARAM_PORTFORMATTYPE
    OMX_VIDEO_PARAM_PORTFORMATTYPE paramPortFormat;
    memset(&paramPortFormat, 0, sizeof(paramPortFormat));
    SetTypeHeader(&paramPortFormat, sizeof(paramPortFormat));
    paramPortFormat.nPortIndex = OUTPORT_INDEX;
    paramPortFormat.nIndex = 0;
    paramPortFormat.eCompressionFormat = paramPortDefinitionOutput.format.video.eCompressionFormat;
    paramPortFormat.eColorFormat = paramPortDefinitionOutput.format.video.eColorFormat;
    paramPortFormat.xFramerate = paramPortDefinitionOutput.format.video.xFramerate;

    port->SetPortVideoParam(&paramPortFormat, true);
    return OMX_ErrorNone;
}