31全志r58平台Android4.4.2下打开USB摄像头
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31全志r58平臺Android4.4.2下打開USB攝像頭
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2018/10/26 16:00
版本：V1.0
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開發板：SC5806
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1、系統編譯：（略）
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2、需要修改的文件：
W:\r58_android_v4.4\android\device\softwinner\octopus-common\hardware\camera\V4L2CameraDevice2.cpp
（這里不修改，你的USB攝像頭是肯定打不開的！）
/****************************************************************************
?* V4L2CameraDevice interface implementation.
?***************************************************************************/
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status_t V4L2CameraDevice::connectDevice(HALCameraInfo * halInfo)
{
F_LOG;
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????Mutex::Autolock locker(&mObjectLock);
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if (isConnected())
{
LOGW("%s: camera device is already connected.", __FUNCTION__);
return NO_ERROR;
}
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// open v4l2 camera device
int ret = openCameraDev(halInfo);
if (ret != OK)
{
???????? return ret;
}
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//get sensor type form driver
switch((v4l2_sensor_type)getSensorType()){
case V4L2_SENSOR_TYPE_YUV:
LOGV("the sensor is YUV sensor");
mSensor_Type = V4L2_SENSOR_TYPE_YUV;
break;
case V4L2_SENSOR_TYPE_RAW:
LOGV("the sensor is RAW sensor");
mSensor_Type = V4L2_SENSOR_TYPE_RAW;
break;
default:
if(mIsUsbCamera) {
LOGV("the sensor is UVC sensor wyb add 2018/10/26 13:58");
mSensor_Type = V4L2_SENSOR_TYPE_YUV;
}
else {
LOGE("get the sensor type failed ?wyb add 2018/10/26 14:59");
goto END_ERROR;
}
}
halInfo->fast_picture_mode = (int)mSensor_Type; //set the CameraHardware Class fast_picture_mode member
memcpy((void*)&mHalCameraInfo, (void*)halInfo, sizeof(HALCameraInfo));
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……
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return UNKNOWN_ERROR;
}
?????????
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bool V4L2CameraDevice::captureThread()
{
……
//get picture flag
mTakePictureFlag.dwval = buf.reserved;
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if (mLastZoom != mNewZoom)
{
float widthRate = (float)mFrameWidth / (float)mVideoWidth;
float heightRate = (float)mFrameHeight / (float)mVideoHeight;
if (mIsThumbUsedForVideo && (widthRate > 4.0) && (heightRate > 4.0))
{
calculateCrop(&mRectCrop, mNewZoom, mMaxZoom, mFrameWidth/2, mFrameHeight/2); // for cts, to do
}
else
{
// the main frame crop
calculateCrop(&mRectCrop, mNewZoom, mMaxZoom, mFrameWidth, mFrameHeight);
}
mCameraHardware->setNewCrop(&mRectCrop);
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// the sub-frame crop
if (mHalCameraInfo.fast_picture_mode)
{
calculateCrop(&mThumbRectCrop, mNewZoom, mMaxZoom, mThumbWidth, mThumbHeight);
}
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mLastZoom = mNewZoom;
mZoomRatio = (mNewZoom * 2 * 100 / mMaxZoom + 100);
LOGV("CROP: [%d, %d, %d, %d]", mRectCrop.left, mRectCrop.top, mRectCrop.right, mRectCrop.bottom);
LOGV("thumb CROP: [%d, %d, %d, %d]", mThumbRectCrop.left, mThumbRectCrop.top, mThumbRectCrop.right, mThumbRectCrop.bottom);
}
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if (mVideoFormat != V4L2_PIX_FMT_YUYV
&& mCaptureFormat == V4L2_PIX_FMT_YUYV)
{
#ifdef USE_MP_CONVERT
YUYVToYUV420C((void*)buf.m.offset,
??(void*)(mVideoBuffer.buf_phy_addr[buf.index] | 0x40000000),
??mFrameWidth,
??mFrameHeight);
#else
if(mIsUsbCamera) {
YUYVToNV21(mMapMem.mem[buf.index],
???(void*)mVideoBuffer.buf_vir_addr[buf.index],
???mFrameWidth,
???mFrameHeight);
}
else
{
YUYVToNV12(mMapMem.mem[buf.index],
???(void*)mVideoBuffer.buf_vir_addr[buf.index],
???mFrameWidth,
???mFrameHeight);
}
#endif
}
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// V4L2BUF_t for preview and HW encoder
V4L2BUF_t v4l2_buf;
if (mVideoFormat != V4L2_PIX_FMT_YUYV
&& mCaptureFormat == V4L2_PIX_FMT_YUYV)
{
v4l2_buf.addrPhyY = mVideoBuffer.buf_phy_addr[buf.index];
v4l2_buf.addrVirY = mVideoBuffer.buf_vir_addr[buf.index];
}
else
{
v4l2_buf.addrPhyY = buf.m.offset - BUFFER_PHY_OFFSET;
v4l2_buf.addrVirY = (unsigned int)mMapMem.mem[buf.index];
}
……
????return true;
}
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（如果不修改這里，將會出現不能拍照的情況）
W:\r58_android_v4.4\android\device\softwinner\octopus-f1\configs\camera.cfg
;-------------------------------------------------------------------------------
; 用于camera的配置
;
; 采用格式:
; key = key_value
; 注意: 每個key需要頂格寫;
; key_value緊跟著key后面的等號后面, 位于同一行中;
; key_value限制大小為256字節以內;
;
;-------------------------------------------------------------------------------
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;-------------------------------------------------------------------------------
; exif information of "make" and "model"
;-------------------------------------------------------------------------------
key_camera_exif_make = MAKE_AllWinner
key_camera_exif_model = MODEL_f1
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;-------------------------------------------------------------------------------
; 1 for single camera, 2 for double camera
;-------------------------------------------------------------------------------
number_of_camera = 1
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;-------------------------------------------------------------------------------
; CAMERA_FACING_BACK
; ov8858
;-------------------------------------------------------------------------------
camera_id = 0
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;-------------------------------------------------------------------------------
; 1 for CAMERA_FACING_FRONT
; 0 for CAMERA_FACING_BACK
;-------------------------------------------------------------------------------
camera_facing = 0
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;-------------------------------------------------------------------------------
; 1 for camera without isp(using built-in isp of Axx)
; 0 for camera with isp
;-------------------------------------------------------------------------------
use_builtin_isp = 0
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;-------------------------------------------------------------------------------
; camera orientation (0, 90, 180, 270)
;-------------------------------------------------------------------------------
camera_orientation = 90
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;-------------------------------------------------------------------------------
; driver device name
;-------------------------------------------------------------------------------
camera_device = /dev/video0
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;-------------------------------------------------------------------------------
; device id
; for two camera devices with one CSI
;-------------------------------------------------------------------------------
device_id = 0
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used_preview_size = 1
key_support_preview_size = 640x480
key_default_preview_size = 640x480
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used_picture_size = 1
key_support_picture_size = 640x480
key_default_picture_size = 640x480
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used_flash_mode = 0
key_support_flash_mode = on,off,auto,red-eye,torch
key_default_flash_mode = off
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used_color_effect=0
key_support_color_effect = none,mono,negative,sepia,aqua
key_default_color_effect = none
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used_frame_rate = 1
key_support_frame_rate = 25
key_default_frame_rate = 25
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used_focus_mode = 1
key_support_focus_mode = auto,infinity,macro,fixed
key_default_focus_mode = auto
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;used_scene_mode = 0
;key_support_scene_mode = auto,action,portrait,landscape,night,night-portrait,theatre,beach,snow,sunset,steadyphoto,fireworks,sports,party,candlelight,barcode,hdr
;key_default_scene_mode = auto
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used_scene_mode = 1
key_support_scene_mode = auto,hdr
key_default_scene_mode = auto
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used_white_balance = 1
key_support_white_balance = auto,incandescent,fluorescent,warm-fluorescent,daylight,cloudy-daylight
key_default_white_balance = auto
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used_exposure_compensation = 1
key_max_exposure_compensation = 3
key_min_exposure_compensation = -3
key_step_exposure_compensation = 1
key_default_exposure_compensation = 0
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used_zoom = 1
key_zoom_supported = true
key_smooth_zoom_supported = false
key_zoom_ratios = 100,120,150,200,230,250,300
key_max_zoom = 30
key_default_zoom = 0
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key_horizonal_view_angle = 64
key_vertical_view_angle = 39.4
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（配置錄像的格式，點錄像會出錯，原因未知！）
W:\r58_android_v4.4\android\device\softwinner\octopus-f1\configs\media_profiles.xml
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W:\r58_android_v4.4\android\device\softwinner\octopus-f1\BoardConfig.mk
W:\r58_android_v4.4\android\device\softwinner\octopus-f1\init.sun8i.rc
#gpu
????insmod /system/vendor/modules/pvrsrvkm.ko
# ???insmod /system/vendor/modules/dc_sunxi.ko
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#csi module
????#insmod /system/vendor/modules/videobuf-core.ko
????#insmod /system/vendor/modules/videobuf-dma-contig.ko
????#insmod /system/vendor/modules/cci.ko
????#insmod /system/vendor/modules/actuator.ko
????#insmod /system/vendor/modules/vfe_os.ko
????#insmod /system/vendor/modules/vfe_subdev.ko
????#insmod /system/vendor/modules/dw9714_act.ko
????#insmod /system/vendor/modules/hi253.ko
????#insmod /system/vendor/modules/ov8858_4lane.ko
????#insmod /system/vendor/modules/vfe_v4l2.ko
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# usb module / UVC
insmod /system/vendor/modules/videobuf2-core.ko
insmod /system/vendor/modules/videobuf2-memops.ko
insmod /system/vendor/modules/videobuf2-vmalloc.ko
insmod /system/vendor/modules/uvcvideo.ko
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#facedetection module
????insmod /system/vendor/modules/sunxi_fd.ko
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W:\r58_android_v4.4\android\device\softwinner\octopus-f1\octopus_f1.mk
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打開USB攝像頭驅動/UVC
W:\r58_android_v4.4\lichee\linux-3.4\.config
1、打印等級調整
rootroot@cm88:/home/wwt/r58_android_v4/lichee/linux-3.4$ make ARCH=arm menuconfig
Device Drivers ?--->
<*> Multimedia support ?--->
[*] ??Video capture adapters ?--->
[*] ??V4L USB devices ?--->
--- V4L USB devices
< > ??USB Video Class (UVC)
修改為：
<M> ??USB Video Class (UVC)
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[*] ????UVC input events device support
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W:\r58_android_v4.4\lichee\tools\pack\chips\sun8iw6p1\configs\f1\sys_config.fex
;--------------------------------------------------------------------------------
;vip (video input port) configuration
;vip_used: 0:disable 1:enable
;vip_mode: 0:sample one interface to one buffer 1:sample two interface to one buffer
;vip_dev_qty: The quantity of devices linked to capture bus
;
;vip_define_sensor_list: If you want use sensor detect function, please set vip_define_sensor_list = 1, and
; ???????????????????????????????????verify that file /system/etc/hawkview/sensor_list_cfg.ini is properly configured!
;
;vip_dev(x)_pos: sensor position, "rear" or "front", if vip_define_sensor_list = 1,
;vip_dev(x)_pos must be configured!
;
;vip_dev(x)_isp_used 0:not use isp 1:use isp
;vip_dev(x)_fmt: 0:yuv 1:bayer raw rgb
;vip_dev(x)_stby_mode: 0:not shut down power at standby 1:shut down power at standby
;vip_dev(x)_vflip: flip in vertical direction 0:disable 1:enable
;vip_dev(x)_hflip: flip in horizontal direction 0:disable 1:enable
;vip_dev(x)_iovdd: camera module io power handle string, pmu power supply
;vip_dev(x)_iovdd_vol: camera module io power voltage, pmu power supply
;vip_dev(x)_avdd: camera module analog power handle string, pmu power supply
;vip_dev(x)_avdd_vol: camera module analog power voltage, pmu power supply
;vip_dev(x)_dvdd: camera module core power handle string, pmu power supply
;vip_dev(x)_dvdd_vol: camera module core power voltage, pmu power supply
;vip_dev(x)_afvdd: camera module vcm power handle string, pmu power supply
;vip_dev(x)_afvdd_vol: camera module vcm power voltage, pmu power supply
;x indicates the index of the devices which are linked to the same capture bus
;fill voltage in uV, e.g. iovdd = 2.8V, vip_devx_iovdd_vol = 2800000
;fill handle string as below:
;axp22_eldo3
;axp22_dldo4
;axp22_eldo2
;fill handle string "" when not using any pmu power supply
;--------------------------------------------------------------------------------
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[csi0]
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vip_used ????????????????= 1
vip_mode ????????????????= 0
vip_dev_qty ?????????????= 1
vip_define_sensor_list ????= 0
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;vip_csi_pck ?????????????= port:PE00<2><default><default><default>
vip_csi_mck ?????????????= port:PE01<2><default><default><default>
;vip_csi_hsync ???????????= port:PE02<2><default><default><default>
;vip_csi_vsync ???????????= port:PE03<2><default><default><default>
;vip_csi_d0 ??????????????=
;vip_csi_d1 ??????????????=
;vip_csi_d0 ??????????????= port:PE04<2><default><default><default>
;vip_csi_d1 ??????????????= port:PE05<2><default><default><default>
;vip_csi_d2 ??????????????= port:PE06<2><default><default><default>
;vip_csi_d3 ??????????????= port:PE07<2><default><default><default>
;vip_csi_d4 ??????????????= port:PE08<2><default><default><default>
;vip_csi_d5 ??????????????= port:PE09<2><default><default><default>
;vip_csi_d6 ??????????????= port:PE10<2><default><default><default>
;vip_csi_d7 ??????????????= port:PE11<2><default><default><default>
;vip_csi_d8 ??????????????= port:PE12<2><default><default><default>
;vip_csi_d9 ??????????????= port:PE13<2><default><default><default>
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vip_csi_sck ??????????????= port:PE14<2><default><default><default>
vip_csi_sda ??????????????= port:PE15<2><default><default><default>
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vip_dev0_mname ??????????= "imx179"
vip_dev0_pos ????????????= "rear"
vip_dev0_lane ???????????= 4
vip_dev0_twi_id ?????????= 0
vip_dev0_twi_addr ???????= 0x20
vip_dev0_isp_used ???????= 1
vip_dev0_fmt ????????????= 1
vip_dev0_stby_mode ??????= 1
vip_dev0_vflip ??????????= 1
vip_dev0_hflip ??????????= 1
vip_dev0_iovdd ??????????= "axp81x_dldo3"
vip_dev0_iovdd_vol ??????= 1800000
vip_dev0_avdd ???????????= "axp81x_dldo4"
vip_dev0_avdd_vol ???????= 2700000
vip_dev0_dvdd ???????????= "axp81x_eldo1"
vip_dev0_dvdd_vol ???????= 1200000
vip_dev0_afvdd ??????????= "axp81x_dldo3"
vip_dev0_afvdd_vol ??????= 2800000
vip_dev0_power_en ???????=
vip_dev0_reset ??????????= port:PE16<1><default><default><default>
vip_dev0_pwdn ???????????= port:PE17<1><default><default><default>
vip_dev0_flash_en ???????=
vip_dev0_flash_mode ?????=
vip_dev0_af_pwdn ????????=
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vip_dev0_act_used ???????= 1
vip_dev0_act_name ???????= "dw9714_act"
vip_dev0_act_slave ??????= 0x18
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vip_dev1_mname ??????????= "ov8865_4lane"
vip_dev1_pos ????????????= "front"
vip_dev1_lane ???????????= 4
vip_dev1_twi_id ?????????= 0
vip_dev1_twi_addr ???????= 0x21
vip_dev1_isp_used ???????= 1
vip_dev1_fmt ????????????= 1
vip_dev1_stby_mode ??????= 1
vip_dev1_vflip ??????????= 0
vip_dev1_hflip ??????????= 0
vip_dev1_iovdd ??????????= "axp81x_dldo3"
vip_dev1_iovdd_vol ??????= 2800000
vip_dev1_avdd ???????????= "axp81x_dldo4"
vip_dev1_avdd_vol ???????= 2800000
vip_dev1_dvdd ???????????= "axp81x_eldo3"
vip_dev1_dvdd_vol ???????= 1200000
vip_dev1_afvdd ??????????= "axp81x_dldo3"
vip_dev1_afvdd_vol ??????= 2800000
vip_dev1_power_en ???????=
vip_dev1_reset ??????????= port:PB02<1><default><default><default>
vip_dev1_pwdn ???????????= port:PB03<1><default><default><default>
vip_dev1_flash_en ???????=
vip_dev1_flash_mode ?????=
vip_dev1_af_pwdn ????????=
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vip_dev1_act_used ???????= 1
vip_dev1_act_name ???????= "ad5820_act"
vip_dev1_act_slave ??????= 0x18
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現階段調出來的效果就是640x480分辨率拍照，其它拍照分辨率和錄像正在嘗試中！
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轉載于:https://www.cnblogs.com/wb4916/p/9922541.html
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