Camx-usecase ID和pipeline的匹配源碼解讀

組件關系


整體流程：

  camxhal3.cpp:704 open()camxhal3.cpp:1423 configure_streams()chxextensionmodule.cpp:2810 InitializeOverrideSessionchxusecaseutils.cpp:850 GetMatchingUsecase()chxadvancedcamerausecase.cpp:4729 Initialize()chxadvancedcamerausecase.cpp:5757 SelectFeatures()

usecase ID匹配邏輯

GetMatchingUsecase 函數根據輸入的相機信息（pCamInfo）和流配置（pStreamConfig）返回最適合的用例ID（UsecaseId）。
– UsecaseSelector::GetMatchingUsecase

代碼邏輯總結

  • ??優先級最高的用例??：
    QuadCFA用例（特定傳感器和流配置）
    超級慢動作模式
  • ??多攝像頭用例??：
    如果啟用VR模式，選擇MultiCameraVR
    否則選擇MultiCamera
  • ??單攝像頭用例??：
    根據流數量(2/3/4)選擇不同的用例
    考慮多種功能標志：ZSL、GPU處理、MFNR、EIS等
  • ??特殊用例??：
    最后檢查是否為手電筒小部件用例
  • ??默認用例??：
    如果沒有匹配其他條件，使用Default用例

關鍵判斷條件

流數量(num_streams)
攝像頭類型和數量
各種功能模塊的啟用狀態(通過ExtensionModule獲取)
特定的流配置檢查(通過IsXXXStreamConfig函數)

UsecaseId UsecaseSelector::GetMatchingUsecase(const LogicalCameraInfo*        pCamInfo,          // 攝像頭邏輯信息camera3_stream_configuration_t* pStreamConfig)     // 流配置信息
{UsecaseId usecaseId = UsecaseId::Default;          // 默認用例UINT32 VRDCEnable = ExtensionModule::GetInstance()->GetDCVRMode(); // 獲取VR模式設置// 檢查是否為QuadCFA傳感器且符合特定條件if ((pStreamConfig->num_streams == 2) && IsQuadCFASensor(pCamInfo, NULL) &&(LogicalCameraType_Default == pCamInfo->logicalCameraType)){// 如果快照尺寸小于傳感器binning尺寸，選擇默認ZSL用例// 只有當快照尺寸大于傳感器binning尺寸時，才選擇QuadCFA用例if (TRUE == QuadCFAMatchingUsecase(pCamInfo, pStreamConfig)){usecaseId = UsecaseId::QuadCFA;CHX_LOG_CONFIG("Quad CFA usecase selected");return usecaseId;}}// 檢查是否為超級慢動作模式if (pStreamConfig->operation_mode == StreamConfigModeSuperSlowMotionFRC){usecaseId = UsecaseId::SuperSlowMotionFRC;CHX_LOG_CONFIG("SuperSlowMotionFRC usecase selected");return usecaseId;}// 重置用例標志VideoEISV2Usecase   = 0;VideoEISV3Usecase   = 0;GPURotationUsecase  = FALSE;GPUDownscaleUsecase = FALSE;// 多攝像頭VR用例判斷if ((NULL != pCamInfo) && (pCamInfo->numPhysicalCameras > 1) && VRDCEnable){CHX_LOG_CONFIG("MultiCameraVR usecase selected");usecaseId = UsecaseId::MultiCameraVR;}// 多攝像頭用例判斷else if ((NULL != pCamInfo) && (pCamInfo->numPhysicalCameras > 1) && (pStreamConfig->num_streams > 1)){CHX_LOG_CONFIG("MultiCamera usecase selected");usecaseId = UsecaseId::MultiCamera;}else{SnapshotStreamConfig snapshotStreamConfig;CHISTREAM** ppChiStreams = reinterpret_cast<CHISTREAM**>(pStreamConfig->streams);// 根據流數量選擇用例switch (pStreamConfig->num_streams){case 2:  // 2個流的情況if (TRUE == IsRawJPEGStreamConfig(pStreamConfig)){CHX_LOG_CONFIG("Raw + JPEG usecase selected");usecaseId = UsecaseId::RawJPEG;break;}// 檢查是否啟用ZSLif (FALSE == m_pExtModule->DisableZSL()){if (TRUE == IsPreviewZSLStreamConfig(pStreamConfig)){usecaseId = UsecaseId::PreviewZSL;CHX_LOG_CONFIG("ZSL usecase selected");}}// 檢查是否啟用GPU旋轉if(TRUE == m_pExtModule->UseGPURotationUsecase()){CHX_LOG_CONFIG("GPU Rotation usecase flag set");GPURotationUsecase = TRUE;}// 檢查是否啟用GPU下采樣if (TRUE == m_pExtModule->UseGPUDownscaleUsecase()){CHX_LOG_CONFIG("GPU Downscale usecase flag set");GPUDownscaleUsecase = TRUE;}// 檢查是否啟用MFNR(多幀降噪)if (TRUE == m_pExtModule->EnableMFNRUsecase()){if (TRUE == MFNRMatchingUsecase(pStreamConfig)){usecaseId = UsecaseId::MFNR;CHX_LOG_CONFIG("MFNR usecase selected");}}// 檢查是否啟用無3A的HFR(高幀率)if (TRUE == m_pExtModule->EnableHFRNo3AUsecas()){CHX_LOG_CONFIG("HFR without 3A usecase flag set");HFRNo3AUsecase = TRUE;}break;case 3:  // 3個流的情況// 設置EIS(電子圖像穩定)標志VideoEISV2Usecase = m_pExtModule->EnableEISV2Usecase();VideoEISV3Usecase = m_pExtModule->EnableEISV3Usecase();// 檢查ZSL預覽if (FALSE == m_pExtModule->DisableZSL() && (TRUE == IsPreviewZSLStreamConfig(pStreamConfig))){usecaseId = UsecaseId::PreviewZSL;CHX_LOG_CONFIG("ZSL usecase selected");}// 檢查Raw+JPEG配置else if(TRUE == IsRawJPEGStreamConfig(pStreamConfig) && FALSE == m_pExtModule->DisableZSL()){CHX_LOG_CONFIG("Raw + JPEG usecase selected");usecaseId = UsecaseId::RawJPEG;}// 檢查視頻實時拍攝配置else if((FALSE == IsVideoEISV2Enabled(pStreamConfig)) && (FALSE == IsVideoEISV3Enabled(pStreamConfig)) &&(TRUE == IsVideoLiveShotConfig(pStreamConfig)) && (FALSE == m_pExtModule->DisableZSL())){CHX_LOG_CONFIG("Video With Liveshot, ZSL usecase selected");usecaseId = UsecaseId::VideoLiveShot;}// 處理BPS攝像頭和EIS設置if ((NULL != pCamInfo) && (RealtimeEngineType_BPS == pCamInfo->ppDeviceInfo[0]->pDeviceConfig->realtimeEngine)){if((TRUE == IsVideoEISV2Enabled(pStreamConfig)) || (TRUE == IsVideoEISV3Enabled(pStreamConfig))){CHX_LOG_CONFIG("BPS Camera EIS V2 = %d, EIS V3 = %d",IsVideoEISV2Enabled(pStreamConfig),IsVideoEISV3Enabled(pStreamConfig));// 對于BPS攝像頭且至少啟用一個EIS的情況// 設置(偽)用例將引導到feature2選擇器usecaseId = UsecaseId::PreviewZSL;}}break;case 4:  // 4個流的情況GetSnapshotStreamConfiguration(pStreamConfig->num_streams, ppChiStreams, snapshotStreamConfig);// 檢查HEIC格式和Raw流if ((SnapshotStreamType::HEIC == snapshotStreamConfig.type) && (NULL != snapshotStreamConfig.pRawStream)){CHX_LOG_CONFIG("Raw + HEIC usecase selected");usecaseId = UsecaseId::RawJPEG;}break;default:  // 其他情況CHX_LOG_CONFIG("Default usecase selected");break;}}// 檢查是否為手電筒小部件用例if (TRUE == ExtensionModule::GetInstance()->IsTorchWidgetUsecase()){CHX_LOG_CONFIG("Torch widget usecase selected");usecaseId = UsecaseId::Torch;}CHX_LOG_INFO("usecase ID:%d",usecaseId);return usecaseId;
}

/// @brief Usecase identifying enums
enum class UsecaseId
{NoMatch             = 0,Default             = 1,Preview             = 2,PreviewZSL          = 3,MFNR                = 4,MFSR                = 5,MultiCamera         = 6,QuadCFA             = 7,RawJPEG             = 8,MultiCameraVR       = 9,Torch               = 10,YUVInBlobOut        = 11,VideoLiveShot       = 12,SuperSlowMotionFRC  = 13,MaxUsecases         = 14,
};

Feature 匹配

feature的定義
/// @brief Advance feature types
enum AdvanceFeatureType
{
AdvanceFeatureNone = 0x0, ///< mask for none features
AdvanceFeatureZSL = 0x1, ///< mask for feature ZSL
AdvanceFeatureMFNR = 0x2, ///< mask for feature MFNR
AdvanceFeatureHDR = 0x4, ///< mask for feature HDR(AE_Bracket)
AdvanceFeatureSWMF = 0x8, ///< mask for feature SWMF
AdvanceFeatureMFSR = 0x10, ///< mask for feature MFSR
AdvanceFeatureQCFA = 0x20, ///< mask for feature QuadCFA
AdvanceFeature2Wrapper = 0x40, ///< mask for feature2 wrapper
AdvanceFeatureCountMax = AdvanceFeature2Wrapper ///< Max of advance feature mask
};

CDKResult AdvancedCameraUsecase::FeatureSetup(camera3_stream_configuration_t* pStreamConfig)
{CDKResult result = CDKResultSuccess;if ((UsecaseId::PreviewZSL    == m_usecaseId) ||(UsecaseId::YUVInBlobOut  == m_usecaseId) ||(UsecaseId::VideoLiveShot == m_usecaseId) ||(UsecaseId::QuadCFA       == m_usecaseId) ||(UsecaseId::RawJPEG       == m_usecaseId)){SelectFeatures(pStreamConfig);}else if (UsecaseId::MultiCamera == m_usecaseId){SelectFeatures(pStreamConfig);}return result;
}// START of OEM to change section
VOID AdvancedCameraUsecase::SelectFeatures(camera3_stream_configuration_t* pStreamConfig)
{// OEM to change// 這個函數根據當前的pStreamConfig和靜態設置決定要運行哪些特性INT32  index                  = 0;UINT32 enabledAdvanceFeatures = 0;// 從ExtensionModule獲取已啟用的高級特性掩碼enabledAdvanceFeatures = ExtensionModule::GetInstance()->GetAdvanceFeatureMask();CHX_LOG("SelectFeatures(), enabled feature mask:%x", enabledAdvanceFeatures);// 如果當前是FastShutter模式，則強制啟用SWMF和MFNR特性if (StreamConfigModeFastShutter == ExtensionModule::GetInstance()->GetOpMode(m_cameraId)){enabledAdvanceFeatures = AdvanceFeatureSWMF|AdvanceFeatureMFNR;}CHX_LOG("SelectFeatures(), enabled feature mask:%x", enabledAdvanceFeatures);// 遍歷所有物理攝像頭設備for (UINT32 physicalCameraIndex = 0 ; physicalCameraIndex < m_numOfPhysicalDevices ; physicalCameraIndex++){index = 0;// 檢查當前用例是否屬于以下類型之一if ((UsecaseId::PreviewZSL      == m_usecaseId)   ||(UsecaseId::MultiCamera     == m_usecaseId)   ||(UsecaseId::QuadCFA         == m_usecaseId)   ||(UsecaseId::VideoLiveShot   == m_usecaseId)   ||(UsecaseId::RawJPEG         == m_usecaseId)){// 如果啟用了MFNR(多幀降噪)特性if (AdvanceFeatureMFNR == (enabledAdvanceFeatures & AdvanceFeatureMFNR)){// 啟用離線噪聲重處理m_isOfflineNoiseReprocessEnabled = ExtensionModule::GetInstance()->EnableOfflineNoiseReprocessing();// 需要FD(人臉檢測)流緩沖區m_isFDstreamBuffersNeeded = TRUE;}// 如果啟用了SWMF(軟件多幀)、HDR或2Wrapper特性if ((AdvanceFeatureSWMF         == (enabledAdvanceFeatures & AdvanceFeatureSWMF))   ||(AdvanceFeatureHDR          == (enabledAdvanceFeatures & AdvanceFeatureHDR))    ||((AdvanceFeature2Wrapper    == (enabledAdvanceFeatures & AdvanceFeature2Wrapper)))){// 創建Feature2Wrapper的輸入信息結構Feature2WrapperCreateInputInfo feature2WrapperCreateInputInfo;feature2WrapperCreateInputInfo.pUsecaseBase             = this;feature2WrapperCreateInputInfo.pMetadataManager         = m_pMetadataManager;feature2WrapperCreateInputInfo.pFrameworkStreamConfig   =reinterpret_cast<ChiStreamConfigInfo*>(pStreamConfig);// 清除所有流的pHalStream指針for (UINT32 i = 0; i < feature2WrapperCreateInputInfo.pFrameworkStreamConfig->numStreams; i++){feature2WrapperCreateInputInfo.pFrameworkStreamConfig->pChiStreams[i]->pHalStream = NULL;}// 如果Feature2Wrapper尚未創建if (NULL == m_pFeature2Wrapper){// 如果是多攝像頭用例if (TRUE == IsMultiCameraUsecase()){// 如果流配置中不包含融合流，則設置輸入輸出類型為YUV_OUTif (FALSE == IsFusionStreamIncluded(pStreamConfig)){feature2WrapperCreateInputInfo.inputOutputType =static_cast<UINT32>(InputOutputType::YUV_OUT);}// 添加內部輸入流(RDI和FD流)for (UINT8 streamIndex = 0; streamIndex < m_numOfPhysicalDevices; streamIndex++){feature2WrapperCreateInputInfo.internalInputStreams.push_back(m_pRdiStream[streamIndex]);feature2WrapperCreateInputInfo.internalInputStreams.push_back(m_pFdStream[streamIndex]);}// 需要FD流緩沖區m_isFDstreamBuffersNeeded = TRUE;}// 創建Feature2Wrapper實例m_pFeature2Wrapper = Feature2Wrapper::Create(&feature2WrapperCreateInputInfo, physicalCameraIndex);}// 將創建的Feature2Wrapper添加到啟用特性列表中m_enabledFeatures[physicalCameraIndex][index] = m_pFeature2Wrapper;index++;}}// 記錄當前物理攝像頭啟用的特性數量m_enabledFeaturesCount[physicalCameraIndex] = index;}// 如果第一個物理攝像頭有啟用的特性if (m_enabledFeaturesCount[0] > 0){// 如果還沒有活動的特性，則設置為第一個啟用的特性if (NULL == m_pActiveFeature){m_pActiveFeature = m_enabledFeatures[0][0];}// 記錄日志：選擇的特性數量和預覽的特性類型CHX_LOG_INFO("num features selected:%d, FeatureType for preview:%d",m_enabledFeaturesCount[0], m_pActiveFeature->GetFeatureType());}else{CHX_LOG_INFO("No features selected");}// 將最后一個快照特性設置為當前活動特性m_pLastSnapshotFeature = m_pActiveFeature;
}

Usecase 匹配邏輯

  • 如果是PreviewZSL、MultiCamera、QuadCFA等模式，直接ConfigureStream和BuildUsecase
  • 其他模式-通過DefaultMatchingUsecase重新匹配
CDKResult AdvancedCameraUsecase::SelectUsecaseConfig(LogicalCameraInfo*              pCameraInfo,   ///< Camera infocamera3_stream_configuration_t* pStreamConfig)  ///< Stream configuration
{if ((UsecaseId::PreviewZSL    == m_usecaseId) ||(UsecaseId::YUVInBlobOut  == m_usecaseId) ||(UsecaseId::VideoLiveShot == m_usecaseId) ||(UsecaseId::MultiCamera   == m_usecaseId) ||(UsecaseId::QuadCFA       == m_usecaseId) ||(UsecaseId::RawJPEG       == m_usecaseId)){ConfigureStream(pCameraInfo, pStreamConfig);BuildUsecase(pCameraInfo, pStreamConfig);}else{CHX_LOG("Initializing using default usecase matching");m_pChiUsecase = UsecaseSelector::DefaultMatchingUsecase(pStreamConfig);}
}
PreviewZSL 模式下

ZSL模式下，pAdvancedUsecase 賦值為UsecaseZSL，
BuildUsecase函數調用CloneUsecase來根據配置選擇克隆ZSL調優用例或高級用例，
一般走pAdvancedUsecase

AdvancedCameraUsecase::Initialize {}//這里 ZSL_USECASE_NAME = "UsecaseZSL"pAdvancedUsecase = GetXMLUsecaseByName(ZSL_USECASE_NAME);}
  • BuildUsecase

    • 根據feature添加pipeline

    • 根據feature克隆并配置用例模板

    • 設置管道與會話、相機的映射關系(Map camera ID and session ID for the pipeline and prepare for pipeline/session creation)

    • 為feature覆蓋流配置

AdvancedCameraUsecase::BuildUsecase（）{// 根據配置選擇克隆ZSL調優用例或高級用例if (static_cast<UINT>(UsecaseZSLTuningId) == ExtensionModule::GetInstance()->OverrideUseCase()){m_pClonedUsecase = UsecaseSelector::CloneUsecase(pZslTuningUsecase, totalPipelineCount, pipelineIDMap);}else{m_pClonedUsecase = UsecaseSelector::CloneUsecase(pAdvancedUsecase, totalPipelineCount, pipelineIDMap);}
}
default模式下

調用流程

m_pChiUsecase = UsecaseSelector::DefaultMatchingUsecase(pStreamConfig);
--ChiUsecase* GetDefaultMatchingUsecase(camera3_stream_configuration_t* pStreamConfig)
---UsecaseSelector::DefaultMatchingUsecaseSelection(pStreamConfig)
----IsMatchingUsecase(pStreamConfig, pUsecase, &pruneSettings);
  • DefaultMatchingUsecaseSelection
    • 優先匹配Selected EISv3 usecase
    • 其次匹配 Selected EISv2 usecase
    • 根據pStreamConfig->num_streams匹配
extern "C" CAMX_VISIBILITY_PUBLIC ChiUsecase* UsecaseSelector::DefaultMatchingUsecaseSelection(camera3_stream_configuration_t* pStreamConfig)
{auto UsecaseMatches = [&pStreamConfig, &pruneSettings](const ChiUsecase* const pUsecase) -> BOOL{return IsMatchingUsecase(pStreamConfig, pUsecase, &pruneSettings);};if (pStreamConfig->num_streams <= ChiMaxNumTargets){else if (NULL == pSelectedUsecase){	//匹配EIS V3算法Usecaseif (TRUE == IsVideoEISV3Enabled(pStreamConfig)){
···if (TRUE == UsecaseMatches(&Usecases3Target[usecaseEIS3Id])){CHX_LOG("Selected EISv3 usecase");pSelectedUsecase = &Usecases3Target[usecaseEIS3Id];}}//匹配EIS V2算法Usecaseif ((TRUE == IsVideoEISV2Enabled(pStreamConfig)) && (NULL == pSelectedUsecase) &&(TRUE == UsecaseMatches(&Usecases3Target[UsecaseVideoEIS2PreviewEIS2Id]))){CHX_LOG("Selected EISv2 usecase");pSelectedUsecase = &Usecases3Target[UsecaseVideoEIS2PreviewEIS2Id];}// This if block is only for kamorta usecases where Preview & Video streams are presentif ((pStreamConfig->num_streams > 1) && (NULL == pSelectedUsecase)){// If both Preview and Video < 1080p then only Preview < Video and Preview >Video Scenario occursif ((numYUVStreams == 2) && (YUV0Height <= TFEMaxHeight && YUV0Width <= TFEMaxWidth) &&(YUV1Height <= TFEMaxHeight && YUV1Width <= TFEMaxWidth)){switch (pStreamConfig->num_streams){case 2:if (((YUV0Height * YUV0Width) < (YUV1Height * YUV1Width)) &&(TRUE == UsecaseMatches(&Usecases2Target[UsecaseVideo_PVLT1080p_PLTVId]))){pSelectedUsecase = &Usecases2Target[UsecaseVideo_PVLT1080p_PLTVId];}else if (TRUE == UsecaseMatches(&Usecases2Target[UsecaseVideo_PVLT1080p_PGTVId])){pSelectedUsecase = &Usecases2Target[UsecaseVideo_PVLT1080p_PGTVId];}break;case 3:if (TRUE == bJpegStreamExists){// JPEG is taking from RealTimeif (((YUV0Height * YUV0Width) < (YUV1Height * YUV1Width)) &&(TRUE == UsecaseMatches(&Usecases5Target[UsecaseJPEGEncodeLiveSnapshot_BothPVLT1080p_PLTVId]))){pSelectedUsecase = &Usecases5Target[UsecaseJPEGEncodeLiveSnapshot_BothPVLT1080p_PLTVId];}else if (TRUE == UsecaseMatches(&Usecases5Target[UsecaseJPEGEncodeLiveSnapshot_BothPVLT1080p_PGTVId])){pSelectedUsecase = &Usecases5Target[UsecaseJPEGEncodeLiveSnapshot_BothPVLT1080p_PGTVId];}}break;// For HEICcase 4:if (TRUE == bHEICStreamExists){if (((YUV0Height * YUV0Width) < (YUV1Height * YUV1Width)) &&(TRUE == UsecaseMatches(&Usecases5Target[UsecaseJPEGEncodeLiveSnapshot_BothPVLT1080p_PLTVId]))){pSelectedUsecase = &Usecases5Target[UsecaseJPEGEncodeLiveSnapshot_BothPVLT1080p_PLTVId];}else if (TRUE == UsecaseMatches(&Usecases5Target[UsecaseJPEGEncodeLiveSnapshot_BothPVLT1080p_PGTVId])){pSelectedUsecase = &Usecases5Target[UsecaseJPEGEncodeLiveSnapshot_BothPVLT1080p_PGTVId];}}break;default:break;}}}//如果上面匹配都失敗了，pStreamConfig->num_streams -1if (NULL == pSelectedUsecase){if ((StreamConfigModeQTIEISLookAhead == pStreamConfig->operation_mode) ||(StreamConfigModeQTIEISRealTime == pStreamConfig->operation_mode)){// EIS is disabled, ensure that operation_mode is also set accordinglypStreamConfig->operation_mode = 0;}numTargetsExpected = pStreamConfig->num_streams - 1;}for (/* Initialized outside*/; numTargetsExpected < ChiMaxNumTargets; numTargetsExpected++){pChiTargetUsecases = &PerNumTargetUsecases[numTargetsExpected];if (0 == pChiTargetUsecases->numUsecases){continue;}CHX_LOG_INFO("Considering %u usecases that have %u targets", pChiTargetUsecases->numUsecases, numTargetsExpected + 1);for (UINT i = 0; i < pChiTargetUsecases->numUsecases; i++){const ChiUsecase* pChiUsecaseDescriptor = &pChiTargetUsecases->pChiUsecases[i];CHX_LOG_INFO("pChiUsecaseDescriptor %s ", pChiUsecaseDescriptor->pUsecaseName);···if (TRUE == UsecaseMatches(pChiUsecaseDescriptor)){}
}

最后代碼匹配邏輯：

  • pStreamConfig->num_streams -1
  • 循環從PerNumTargetUsecases去找Usecase

pStreamConfig->num_streams -1，這里-1是因為
比如2路流，pStreamConfig->num_streams -1 = 2-1 =1
PerNumTargetUsecases[1] 對應的是{16, Usecases2Target},


BOOL UsecaseSelector::IsMatchingUsecase
vendor/qcom/proprietary/chi-cdk/core/chiusecase/chxusecaseutils.cpp

主要匹配邏輯如下：

  • IsMatchingVideo ：比較是否是視頻模式
  • IsMatchingFormat： 比較圖像格式
  • IsMatchingdirection： 比較圖像流是輸入還是輸出
  • IsMatchingDimension：比較圖片寬高是否符合要求

streamFormat 匹配格式

typedef enum ChiStreamFormat
{ChiStreamFormatYCrCb420_SP   = 0x00000113,   ///< YCrCb420_SP is mapped to ChiStreamFormatYCbCr420_888 with ZSL flagsChiStreamFormatRaw16         = 0x00000020,   ///< Blob formatChiStreamFormatBlob          = 0x00000021,   ///< Carries data which does not have a standard image structure (e.g. JPEG)ChiStreamFormatImplDefined   = 0x00000022,   ///< Format is up to the device-specific Gralloc implementation.ChiStreamFormatYCbCr420_888  = 0x00000023,   ///< Efficient YCbCr/YCrCb 4:2:0 buffer layout, layout-independentChiStreamFormatRawOpaque     = 0x00000024,   ///< Raw OpaqueChiStreamFormatRaw10         = 0x00000025,   ///< Raw 10ChiStreamFormatRaw12         = 0x00000026,   ///< Raw 12ChiStreamFormatRaw64         = 0x00000027,   ///< Blob formatChiStreamFormatUBWCNV124R    = 0x00000028,   ///< UBWCNV12-4RChiStreamFormatNV12HEIF      = 0x00000116,   ///< HEIF video YUV420 formatChiStreamFormatNV12YUVFLEX   = 0x00000125,   ///< Flex NV12 YUV format with 1 batchChiStreamFormatNV12UBWCFLEX  = 0x00000126,   ///< Flex NV12 UBWC formatChiStreamFormatY8            = 0x20203859,   ///< Y 8ChiStreamFormatY16           = 0x20363159,   ///< Y 16ChiStreamFormatP010          = 0x7FA30C0A,   ///< P010ChiStreamFormatUBWCTP10      = 0x7FA30C09,   ///< UBWCTP10ChiStreamFormatUBWCNV12      = 0x7FA30C06,   ///< UBWCNV12ChiStreamFormatPD10          = 0x7FA30C08,   ///< PD10
}

BufferFormat匹配格式

/// @brief Buffer Format
typedef enum ChiBufferFormat
{ChiFormatJpeg               = 0,                   ///< JPEG format.ChiFormatY8                 = 1,                   ///< Luma only, 8 bits per pixel.ChiFormatY16                = 2,                   ///< Luma only, 16 bits per pixel.ChiFormatYUV420NV12         = 3,                   ///< YUV 420 format as described by the NV12 fourcc.ChiFormatYUV420NV21         = 4,                   ///< YUV 420 format as described by the NV21 fourcc.ChiFormatYUV420NV16         = 5,                   ///< YUV 422 format as described by the NV16 fourccChiFormatBlob               = 6,                   ///< Any non image dataChiFormatRawYUV8BIT         = 7,                   ///< Packed YUV/YVU raw format. 16 bpp: 8 bits Y and 8 bits UV.///  U and V are interleaved as YUYV or YVYV.ChiFormatRawPrivate         = 8,                   ///< Private RAW formats where data is packed into 64bit word.///  8BPP:  64-bit word contains 8 pixels p0-p7, p0 is stored at LSB.///  10BPP: 64-bit word contains 6 pixels p0-p5,///         most significant 4 bits are set to 0. P0 is stored at LSB.///  12BPP: 64-bit word contains 5 pixels p0-p4,///         most significant 4 bits are set to 0. P0 is stored at LSB.///  14BPP: 64-bit word contains 4 pixels p0-p3,///         most significant 8 bits are set to 0. P0 is stored at LSB.ChiFormatRawMIPI            = 9,                   ///< MIPI RAW formats based on MIPI CSI-2 specification.///  8BPP: Each pixel occupies one bytes, starting at LSB.///        Output width of image has no restrictions.///  10BPP: 4 pixels are held in every 5 bytes.///         The output width of image must be a multiple of 4 pixels.ChiFormatRawMIPI10          = ChiFormatRawMIPI,    ///< By default 10-bit, ChiFormatRawMIPI10ChiFormatRawPlain16         = 10,                  ///< Plain16 RAW format. Single pixel is packed into two bytes,///  little endian format.///  Not all bits may be used as RAW data is///  generally 8, or 10 bits per pixel.///  Lower order bits are filled first.ChiFormatRawPlain16LSB10bit = ChiFormatRawPlain16, ///< By default 10-bit, ChiFormatRawPlain16LSB10bitChiFormatRawMeta8BIT        = 11,                  ///< Generic 8-bit raw meta data for internal camera usage.ChiFormatUBWCTP10           = 12,                  ///< UBWC TP10 format (as per UBWC2.0 design specification)ChiFormatUBWCNV12           = 13,                  ///< UBWC NV12 format (as per UBWC2.0 design specification)ChiFormatUBWCNV124R         = 14,                  ///< UBWC NV12-4R format (as per UBWC2.0 design specification)ChiFormatYUV420NV12TP10     = 15,                  ///< YUV 420 format 10bits per comp tight packed format.ChiFormatYUV420NV21TP10     = 16,                  ///< YUV 420 format 10bits per comp tight packed format.ChiFormatYUV422NV16TP10     = 17,                  ///< YUV 422 format 10bits per comp tight packed format.ChiFormatPD10               = 18,                  ///< PD10 formatChiFormatRawMIPI8           = 19,                  ///< 8BPP: Each pixel occupies one bytes, starting at LSB.///  Output width of image has no restrictions.ChiFormatP010               = 22,                  ///< P010 format.ChiFormatRawPlain64         = 23,                  ///< Raw Plain 64ChiFormatUBWCP010           = 24,                  ///< UBWC P010 format.ChiFormatRawDepth           = 25,                  ///< 16 bit depthChiFormatRawMIPI12          = 26,                  ///<  12BPP: 2 pixels are held in every 3 bytes.///         The output width of image must be a multiple of 2 pixels.ChiFormatRawPlain16LSB12bit = 27,                  ///< Plain16 RAW format. 12 bits per pixel.ChiFormatRawMIPI14          = 28,                  ///  14BPP: 4 pixels are held in every 7 bytes.///         The output width of image must be a multiple of 4 pixels.ChiFormatRawPlain16LSB14bit = 29,                  ///< Plain16 RAW format. 14 bits per pixel.
} CHIBUFFERFORMAT;

基于log解析代碼邏輯

源碼實現

// 函數：判斷當前流配置是否匹配指定的用例
// 參數：
//   pStreamConfig - 流配置信息
//   pUsecase - 用例信息
//   pPruneSettings - 修剪設置（用于排除某些目標）
// 返回值：BOOL - TRUE表示匹配，FALSE表示不匹配
BOOL UsecaseSelector::IsMatchingUsecase(const camera3_stream_configuration_t* pStreamConfig,const ChiUsecase*                     pUsecase,const PruneSettings*                  pPruneSettings)
{// 斷言檢查輸入參數不能為空CHX_ASSERT(NULL != pStreamConfig);CHX_ASSERT(NULL != pUsecase);// 初始化變量UINT       numStreams        = pStreamConfig->num_streams;  // 流數量BOOL       isMatching        = FALSE;  // 匹配結果標志UINT       streamConfigMode  = pUsecase->streamConfigMode;  // 用例的流配置模式BOOL       bTargetVideoCheck = FALSE;  // 是否需要檢查視頻目標BOOL       bHasVideoTarget   = FALSE;  // 用例是否有視頻目標BOOL       bHasVideoStream   = FALSE;  // 流配置中是否有視頻流UINT       videoStreamIdx    = 0;      // 視頻流索引// 初始化比較掩碼：// compareTargetIndexMask - 用于跟蹤需要比較的目標（初始設置為所有目標都需要比較）// compareStreamIndexMask - 用于跟蹤需要比較的流（初始設置為所有流都需要比較）UINT compareTargetIndexMask = ((1 << pUsecase->numTargets) - 1);UINT compareStreamIndexMask = ((1 << numStreams) - 1);// 檢查流配置中是否有視頻流for (UINT streamIdx = 0; streamIdx < numStreams; streamIdx++){if(IsVideoStream(pStreamConfig->streams[streamIdx])){bHasVideoStream   = TRUE;videoStreamIdx    = streamIdx;break;}}// 檢查用例中是否有視頻目標for (UINT targetIdx = 0; targetIdx < pUsecase->numTargets; targetIdx++){ChiTarget* pTargetInfo = pUsecase->ppChiTargets[targetIdx];if (!CdkUtils::StrCmp(pTargetInfo->pTargetName, "TARGET_BUFFER_VIDEO")){bHasVideoTarget = TRUE;break;}}// 設置視頻目標檢查標志（當既有視頻流又有視頻目標時需要特殊檢查）bTargetVideoCheck = bHasVideoStream && bHasVideoTarget;// 檢查流配置模式是否匹配if (streamConfigMode == static_cast<UINT>(pStreamConfig->operation_mode)){// 遍歷用例中的所有目標for (UINT targetInfoIdx = 0; targetInfoIdx < pUsecase->numTargets; targetInfoIdx++){ChiTarget* pTargetInfo = pUsecase->ppChiTargets[targetInfoIdx];// 檢查是否需要修剪當前目標（根據修剪設置）if ((NULL != pUsecase->pTargetPruneSettings) &&(TRUE == ShouldPrune(pPruneSettings, &pUsecase->pTargetPruneSettings[targetInfoIdx]))){CHX_LOG_INFO("Ignoring Target Info because of prune settings: ""format[0]: %u targetType = %d streamWidth = %d streamHeight = %d",pTargetInfo->pBufferFormats[0],pTargetInfo->direction,pTargetInfo->dimension.maxWidth,pTargetInfo->dimension.maxHeight);// 從比較掩碼中移除當前目標compareTargetIndexMask = ChxUtils::BitReset(compareTargetIndexMask, targetInfoIdx);continue; // 跳過被修剪的目標}isMatching = FALSE;  // 重置匹配標志// 檢查當前目標是否是視頻目標BOOL bIsVideoTarget = !CdkUtils::StrCmp(pTargetInfo->pTargetName, "TARGET_BUFFER_VIDEO");// 遍歷所有流for (UINT streamId = 0; streamId < numStreams; streamId++){// 如果當前流已經被匹配過，則跳過if (FALSE == ChxUtils::IsBitSet(compareStreamIndexMask, streamId)){continue;}ChiStream* pStream = reinterpret_cast<ChiStream*>(pStreamConfig->streams[streamId]);CHX_ASSERT(pStream != NULL);if (NULL != pStream){// 獲取流屬性INT    streamFormat = pStream->format;UINT   streamType   = pStream->streamType;UINT32 streamWidth  = pStream->width;UINT32 streamHeight = pStream->height;CHX_LOG("streamType = %d streamFormat = %d streamWidth = %d streamHeight = %d",streamType, streamFormat, streamWidth, streamHeight);// 檢查格式是否匹配isMatching = IsMatchingFormat(reinterpret_cast<ChiStream*>(pStream),pTargetInfo->numFormats,pTargetInfo->pBufferFormats);// 檢查流類型（方向）是否匹配if (TRUE == isMatching){isMatching = ((streamType == static_cast<UINT>(pTargetInfo->direction)) ? TRUE : FALSE);}// 檢查分辨率是否在目標范圍內if (TRUE == isMatching){BufferDimension* pRange = &pTargetInfo->dimension;if ((streamWidth  >= pRange->minWidth)  && (streamWidth  <= pRange->maxWidth) &&(streamHeight >= pRange->minHeight) && (streamHeight <= pRange->maxHeight)){isMatching = TRUE;}else{isMatching = FALSE;}}// 特殊處理視頻流和目標if (bTargetVideoCheck){BOOL  bIsVideoStream = (videoStreamIdx == streamId);if(bIsVideoTarget ^ bIsVideoStream)  // XOR操作：必須同時是視頻或同時不是視頻{isMatching = FALSE;}}// 如果匹配成功，更新掩碼并跳出循環if (TRUE == isMatching){pTargetInfo->pChiStream = pStream;  // 將流與目標關聯// 從比較掩碼中移除已匹配的目標和流compareTargetIndexMask = ChxUtils::BitReset(compareTargetIndexMask, targetInfoIdx);compareStreamIndexMask = ChxUtils::BitReset(compareStreamIndexMask, streamId);break; // 處理下一個流}}}// 如果當前流沒有找到匹配的目標，則整個用例不匹配if (FALSE == isMatching){break;}}}// 最終檢查：所有流都必須找到匹配的目標if (TRUE == isMatching){isMatching = (0 == compareStreamIndexMask) ? TRUE : FALSE;}// 記錄調試信息CHX_LOG_VERBOSE("Target Mask: %x Stream Mask: %x - %s",compareTargetIndexMask,compareStreamIndexMask,pUsecase->pUsecaseName);return isMatching;
}

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