和你一起終身學習，這裏是程序員 Android
經典好文推薦，通過閱讀本文，您將收穫以下知識點:
一、 創建 LogicalCameraName 相關的metadata
二、 導通 LogicalCameraName Middleware 相關配置
三、認 LogicalCameraName 是否創建成功
四、雙攝bringup LogicalCameraDevice 導通參考
一、 創建 LogicalCameraName 相關的metadata
1.1 LogicalCameraName 文件夾命名規則
主攝_FeatureName
例如：(主攝_bayerwide, 主攝_bayertele, 主攝_bayerbayer, 主攝_bayermono)
預設單攝對應的metadata 已經存在並導通，將主攝(比如：SENSOR_DRVNAME_S5K_MIPI_RAW)的 metadata文件夾 copy 一份；
修改主攝文件夾名爲LogicalCameraName;
比如：vendor\mediatek\proprietary\custom\mt**\hal\imgsensor_metadata\S5K_mipi_raw_bayermono
修改創建 LogicalCameraName 文件夾中的metadata文件中 STATIC_METADATA2_BEGIN 後面的主攝的name 修改爲LogicalCameraName;
比如：
$grep "S5K" -ri .
./config_static_metadata.lens.S5Kmipiraw.h:STATIC_METADATA2_BEGIN(PLATFORM, LENS, SENSOR_DRVNAME_S5K_MIPI_RAW_bayermono)
./config_static_metadata.module.S5Kmipiraw.h:STATIC_METADATA2_BEGIN(PLATFORM, MODULE, SENSOR_DRVNAME_S5K_MIPI_RAW_bayermono)
./config_static_metadata.module.S5Kmipiraw.h:STATIC_METADATA2_BEGIN(PLATFORM, MOD_OVERWRITE, SENSOR_DRVNAME_S5K_MIPI_RAW_bayermono)
./config_static_metadata_availableKeys.h:STATIC_METADATA2_BEGIN(PLATFORM, AVAILABLE_KEYS, SENSOR_DRVNAME_S5K_MIPI_RAW_bayermono)
./config_static_metadata_custom.h:STATIC_METADATA2_BEGIN(PLATFORM, CUSTOM, SENSOR_DRVNAME_S5K_MIPI_RAW_bayermono)
./config_static_metadata_project.h:STATIC_METADATA2_BEGIN(PLATFORM, PROJECT, SENSOR_DRVNAME_S5K_MIPI_RAW_bayermono)
./config_static_metadata_project.h:STATIC_METADATA2_BEGIN(PLATFORM, PRO_OVERWRITE, SENSOR_DRVNAME_S5K_MIPI_RAW_bayermono)
./config_static_metadata_vendor.h:STATIC_METADATA2_BEGIN(PLATFORM, VENDOR, SENSOR_DRVNAME_S5K_MIPI_RAW_bayermono)
1.2 LogicalCamera Size 修改
LogicalCamera Size相關：config_static_metadata_custom.h
後置人像尺寸：
CONFIG_METADATA_BEGIN(android_TUNNING_BACK_PORTRAIT_NORMAL_PICTURE_SIZE)
CONFIG_ENTRY_VALUE(4160, MINT32)
CONFIG_ENTRY_VALUE(3120, MINT32)
CONFIG_METADATA_END()
/主副攝照片尺寸
CONFIG_METADATA_BEGIN(android_CONTROL_BOKEH_PICTURE_SIZE)
CONFIG_ENTRY_VALUE(4160 , MINT32)
CONFIG_ENTRY_VALUE(3120 , MINT32)
CONFIG_ENTRY_VALUE(1600 , MINT32)
CONFIG_ENTRY_VALUE(1200 , MINT32)
CONFIG_METADATA_END()
二、 導通 LogicalCameraName Middleware 相關配置
Multicamra custom stereo Setting middleware 配置路徑：
alps/vendor/mediatek/proprietary/custom/mt**/hal/camera/camera_custom_stereo_setting.h
主攝Name ，副攝Name ，LogicalCameraName(主攝_FeatureName)添加到camera_custom_stereo_setting.h中。
注意：主攝Name ，副攝Name ，LogicalCameraName 需要跟meatdata文件夾中的保持一致。
2.1 配置舉例如下：
//主攝Name
"{"
"\"Name\": \"S5K_MIPI_RAW\","
"\"Capture Size\": {" //實際雙攝圖片的最終輸出大小。
"\"4:3\": ["
"\"4160x3120\""
"],"
"\"16:9\": ["
"\"4160x2340\""
"]"
"},"
"\"IMGOYUV Size\": {" //在有Fov Crop 的情況下，不能配置爲Sensor full size,建議比full size 小，或者配置FOV crop的值
"\"4:3\": \"4160x3120\","
"\"16:9\": \"4160x2340\""
"},"
"\"RRZOYUV Size\": {" //一般配置跟預覽size 相等或者稍大，如果IMGOYUV Size的二分之一比預覽size 大的話，也可以配置爲IMGOYUV Size的二分之一。
"\"4:3\": \"2080x1560\","
"\"16:9\": \"2080x1170\""
"},"
"\"SensorScenarioZSD\": {" //人像對應的是VSDoF， 對應的Sensor Settings的Sensormode 是Custom1
"\"VSDoF\": \"custom1\","
"\"3rdParty\": \"custom1\","
"\"Zoom\": \"custom1\","
"\"MtkDepthmap\": \"custom1\","
"\"Multicam\": \"custom1\""
"},"
"\"SensorScenarioRecording\": {"
"\"VSDoF\": \"Video\","
"\"3rdParty\": \"custom1\","
"\"MtkDepthmap\": \"custom1\""
"},"
"\"FOV\": {"
"\"H\": 69.0,"
"\"V\": 54.4"
"},"
"\"Calibration\": {"
"\"Macro Distance\": 80,"
"\"Infinite Distance\": 5000" // 標定距離遠處 50cm
"
}
//，副攝Name
"{"
"\"Name\": \"SC20_MIPI_RAW\","
"\"Capture Size\": {"
"\"4:3\": ["
... ...
}
//，LogicalCameraName
"{"
"\"Logical Device\":{"
"\"Name\": \"bayermono\","
"\"Features\": [\"VSDoF\"]"
"},"
"\"Sensors\": [ \"S5K_MIPI_RAW\", \"SC20_MIPI_RAW\"],"
"\"Depth Flow\": \"MtkDepthmap\","
"\"Module Type\": 2,"
"\"Baseline\": 1.82," //主副攝Sensor 中心距離
"\"FOV Crop\": {"
"\"Disable Crop\": 1" //如果副攝FOV可以 cover 到主攝FOV 就不需要做Crop，配置爲Disable Crop，否則配置爲 Center Crop
"},"
"\"Depthmap Size\": {"
"\"4:3\": \"480x360\","
"\"16:9\": \"480x272\""
"},"
"\"LDC\": [\"0\"]"
}
2.3 部分名詞解釋
Caputre Size：實際雙攝圖片的最終輸出大小。
IMGOYUV Size：在有Fov Crop 的情況下，不能配置爲Sensor full size,建議比full size 小，或者配置FOV crop的值。
RRZOYUV Size：一般配置跟預覽size 相等或者稍大，如果IMGOYUV Size的二分之一比預覽size 大的話，也可以配置爲IMGOYUV Size的二分之一。
SensorScenaricZSD：人像對應的是VSDoF， 對應的Sensor Settings的Sensormode 是Custom1 ，詳細請看下面舉例。
FOV ： 市場角，規格說明書中有H/V 或者D兩種表達
Calibration： 標定距離遠處 50cm
Baseline： 主副攝Sensor 中心距離，涉及到標定。
FOV Crop： 如果副攝FOV可以 cover 到主攝FOV 就不需要做Crop，配置爲Disable Crop，否則配置爲 Center Crop
2.4 Sensormode 客製化舉例
修改S5K_mipi_raw 客製化sensormode 爲custom1
比如：在下面文件中添加custom1
\kernel-4.14\drivers\misc\mediatek\imgsensor\src\mt**\camera_project\k6833v1_64\S5K_mipi_raw
.custom1 = {
.pclk = 480000000, //record different mode's pclk
.linelength = 4896, //record different mode's linelength
.framelength = 4084, //record different mode's framelength
.startx = 0, //record different mode's startx of grabwindow
.starty = 0, //record different mode's starty of grabwindow
.grabwindow_width = 4160, //record different mode's width of grabwindow
.grabwindow_height = 3120, //record different mode's height of grabwindow
/* following for MIPIDataLowPwr2HighSpeedSettleDelayCount by different scenario */
.mipi_data_lp2hs_settle_dc = 85,
/* following for GetDefaultFramerateByScenario() */
.max_framerate = 240,
.mipi_pixel_rate = 454400000,
},
三、認 LogicalCameraName 是否創建成功
抓開機Log(boot_normal的main log) 確認 LogicalCameraName 是否創建成功
3.1 打開logD命令抓取開啓log方式：
adb root
adb shell setenforce 0
adb shell setprop persist.vendor.mtk.camera.log_level 3
adb shell setprop persist.vendor.debug.camera.log 3
adb shell pkill camerahalserver
adb shell pkill cameraserver
3.2 Log 關鍵字：
LogicalDevice|Logical Device Name|addLogicalDevice|queryDriverName
or
LogicalDevice: Sensor #|addLogicalDevice|queryDriverName] queryDriverName
// LogicalCameraName 名稱 bayermono，包含的物理主副攝 Sensor 名，Feature：vsdof
01-01 04:35:58.196228 26609 26609 D MtkCam/Util/LogicalDevice: Logical Device Name: bayermono
01-01 04:35:58.196262 26609 26609 D MtkCam/Util/LogicalDevice: Sensor #0: S5K_MIPI_RAW(ID: 0)
01-01 04:35:58.196278 26609 26609 D MtkCam/Util/LogicalDevice: Sensor #1: SC20_MIPI_RAW(ID: 2)
01-01 04:35:58.196296 26609 26609 D MtkCam/Util/LogicalDevice: vsdof //對應的Feature 是vsdof 虛化
01-01 04:35:58.196312 26609 26609 D MtkCam/Util/LogicalDevice: ---------------
... ...
//成功添加 Logical camera SENSOR_DRVNAME_S5K_MIPI_RAW_bayermono 並查詢index 爲3
01-01 04:35:58.198808 26609 26609 D MtkCam/Util/LogicalDevice: (26609)[addLogicalDevice] query static metadata for multi-cam (SENSOR_DRVNAME_S5K_MIPI_RAW_bayermono)
01-01 04:35:58.226454 26609 26609 I MtkCam/Util/LogicalDevice: (26609)[addLogicalDevice] add new logic device: SENSOR_DRVNAME_S5K_MIPI_RAW_bayermono
01-01 04:35:59.019505 26609 26609 D MtkCam/Util/LogicalDevice: (26609)[queryDriverName] queryDriverName index : 3
01-01 04:35:59.019530 26609 26609 D MtkCam/Util/LogicalDevice: (26609)[queryDriverName] queryDriverName : SENSOR_DRVNAME_S5K_MIPI_RAW_bayermono
01-01 04:45:12.691179 11172 11855 I CameraService: CameraService::connect call (PID -1 "com.android.camera", camera ID 3) and Camera API version 2
四、雙攝bringup LogicalCameraDevice 導通參考
- 004_ISP7_Multi-Camera(SAT,VSDOF).pdf
- ISP7_How_to_use_custom_setting_file.pdf
- VSdof ：Video Shallow Depth of Field 視頻淺景深
- SAT： Spatial Alignment Transform 光變切換(空間對齊變換)
- PIP： Picture in Picture 畫中畫(雙景錄像)
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