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顾村网站建设,短视频营销优势,织梦网站搬家,如何做销售网站平台 RK3566 Android 11 概述 UVC： USB video class（又称为USB video device class or UVC）就是USB device class视频产品在不需要安装任何的驱动程序下即插即用，包括摄像头、数字摄影机、模拟视频转换器、电视卡及静态视频相机…

平台

  RK3566 + Android 11

概述

在这里插入图片描述

    UVC：
USB video class（又称为USB video device class or UVC）就是USB device class视频产品在不需要安装任何的驱动程序下即插即用，包括摄像头、数字摄影机、模拟视频转换器、电视卡及静态视频相机。

测试代码：

	Camera cam = Camera.open(CAMERA_ID);Camera.Parameters param = cam.getParameters();List<Camera.Size> sizes = param.getSupportedPreviewSizes();

打印出来后显示支持的预览分辨率如下：

D  startPreview support preview 640x360
D  startPreview support preview 640x480
D  startPreview support preview 960x540
D  startPreview support preview 800x600
D  startPreview support preview 1280x720
D  startPreview support preview 1280x960
D  startPreview support preview 1920x1080
D  startPreview support preview 1600x1200

然而，把摄像头接入到PC上，不管是LINUX还是WINDOWS，会发现实际支持的最大预览分辨率是：3840x2160
缺少的分辨率哪去了？

分析

摄像头部分的架构比较复杂，整理几个相关的源码目录：

# SDK 接口
> frameworks/base/core/java/android/hardware/Camera.java
> frameworks/base/core/jni/android_hardware_Camera.cpp# 上层 Camera 服务
> frameworks/av/camera/# HAL层
> hardware/rockchip/camera
> hardware/interfaces/camera/# 配置文件，对应USB和CSI之类的摄像头配置
# 包含了支持分辨率，闪光灯等等的一些特性。
> device/rockchip/common/external_camera_config.xml
> hardware/rockchip/camera/etc/camera/

烧录到主板后相关的一些文件目录

> rk3568_r:/ # ll /vendor/etc/camera/                                                                                  
total 948
-rw-r--r-- 1 root root    3044 2023-04-18 09:55 README.txt
-rw-r--r-- 1 root root  152818 2023-04-18 09:55 camera3_profiles.xml
-rw-r--r-- 1 root root  166244 2023-04-18 09:55 camera3_profiles_default.xml
-rw-r--r-- 1 root root   14744 2023-04-18 09:55 camera3_profiles_rk1126.xml
-rw-r--r-- 1 root root   48811 2023-04-18 09:55 camera3_profiles_rk3126c.xml
-rw-r--r-- 1 root root   64987 2023-04-18 09:55 camera3_profiles_rk3288.xml
-rw-r--r-- 1 root root   61800 2023-04-18 09:55 camera3_profiles_rk3326.xml
-rw-r--r-- 1 root root   98549 2023-04-18 09:55 camera3_profiles_rk3368.xml
-rw-r--r-- 1 root root   64766 2023-04-18 09:55 camera3_profiles_rk3399.xml
-rw-r--r-- 1 root root   26451 2023-04-18 09:55 camera3_profiles_rk3399_1608.xml
-rw-r--r-- 1 root root   77820 2023-04-18 09:55 camera3_profiles_rk3399pro.xml
-rw-r--r-- 1 root root  152818 2023-04-18 09:55 camera3_profiles_rk356x.xml
-rw-r--r-- 1 root root    2875 2023-04-18 09:55 graph_descriptor.xml
-rw-r--r-- 1 root root     145 2023-04-18 09:55 reset_camera.sh
drwxr-xr-x 2 root shell   4096 2023-04-18 09:55 rkisp1
drwxr-xr-x 2 root shell   4096 2023-04-18 09:55 rkisp2# UVC 的配置
> /vendor/etc/external_camera_config.xml

先用v4l2 工具看下基本信息

## 当前的设备列表
rk3566:/ # ll /dev/video*                                                                                            
crw-rw---- 1 media camera 81,   0 2023-04-14 09:44 /dev/video0
crw-rw---- 1 media camera 81,   1 2023-04-14 09:44 /dev/video1
crw-rw---- 1 media camera 81,  10 2023-04-14 09:44 /dev/video10
crw-rw---- 1 media camera 81,  11 2023-04-14 09:44 /dev/video11
crw-rw---- 1 media camera 81,  12 2023-04-14 09:44 /dev/video12
crw-rw---- 1 media camera 81,  13 2023-04-14 09:44 /dev/video13
crw-rw---- 1 media camera 81,  14 2023-04-14 09:44 /dev/video14
crw-rw---- 1 media camera 81,  15 2023-04-14 09:44 /dev/video15
crw-rw---- 1 media camera 81,   2 2023-04-14 09:44 /dev/video2
crw-rw---- 1 media camera 81,   3 2023-04-14 09:44 /dev/video3
crw-rw---- 1 media camera 81,   4 2023-04-14 09:44 /dev/video4
crw-rw---- 1 media camera 81,   5 2023-04-14 09:44 /dev/video5
crw-rw---- 1 media camera 81,   6 2023-04-14 09:44 /dev/video6
crw-rw---- 1 media camera 81,   7 2023-04-14 09:44 /dev/video7
crw-rw---- 1 media camera 81,   8 2023-04-14 09:44 /dev/video8
crw-rw---- 1 media camera 81,   9 2023-04-14 09:44 /dev/video9# 设备信息
rk3566_r:/ # v4l2-ctl --list-devices                                                                                 
rkisp-statistics (platform: rkisp):/dev/video12/dev/video13rkcif (platform:rkcif_mipi_lvds):/dev/video0/dev/video1/dev/video2/dev/video3/dev/video4rkisp_mainpath (platform:rkisp-vir0):/dev/video5/dev/video6/dev/video7/dev/video8/dev/video9/dev/video10/dev/video11UC40A Audio: UC40A Video (usb-xhci-hcd.1.auto-1.3):/dev/video14/dev/video15# 查看指定设备信息
rk3566_r:/ # v4l2-ctl -D -d /dev/video15                                                                             
Driver Info:Driver name      : uvcvideoCard type        : UC40A Audio: UC40A VideoBus info         : usb-xhci-hcd.1.auto-1.3Driver version   : 4.19.193Capabilities     : 0x84a00001Video CaptureMetadata CaptureStreamingExtended Pix FormatDevice CapabilitiesDevice Caps      : 0x04a00000Metadata CaptureStreamingExtended Pix Format
Media Driver Info:Driver name      : uvcvideoModel            : UC40A Audio: UC40A VideoSerial           : 01.00.00Bus info         : usb-xhci-hcd.1.auto-1.3Media version    : 4.19.193Hardware revision: 0x00000902 (2306)Driver version   : 4.19.193
Interface Info:ID               : 0x03000005Type             : V4L Video
Entity Info:ID               : 0x00000004 (4)Name             : UC40A Audio: UC40A VideoFunction         : V4L2 I/O# 设备支持格式
rk3566_r:/ # v4l2-ctl -d /dev/video14  --list-formats                                                                
ioctl: VIDIOC_ENUM_FMTIndex       : 0Type        : Video CapturePixel Format: 'MJPG' (compressed)Name        : Motion-JPEGIndex       : 1Type        : Video CapturePixel Format: 'YUYV'Name        : YUYV 4:2:2# 设备支持分辨率
rk3566_r:/ # v4l2-ctl -d /dev/video14  --list-framesizes=YUYV                                                        
ioctl: VIDIOC_ENUM_FRAMESIZESSize: Discrete 2048x1536Size: Discrete 640x480Size: Discrete 3840x2160Size: Discrete 2592x1944Size: Discrete 2688x1512Size: Discrete 1920x1080Size: Discrete 1600x1200Size: Discrete 1280x960Size: Discrete 1280x720Size: Discrete 960x540Size: Discrete 800x600Size: Discrete 640x360

结论：硬件及驱动到HAL都是正常

忽略中间漫长的排查过程, 直奔主题:
预览的限制主要存在于HAL和framework层， 至少RK的SDK是这样的，其他平台请勿对号入座。

  1. HAL

/vendor/etc/external_camera_config.xml 中的 FpsList
注释：List of maximum fps for various output sizes
解决的方法是增加对应缺少的分辨率，如：<Limit width=“3840” height=“2160” fpsBound=“30.0” />

<ExternalCamera><Provider><ignore> <!-- Internal video devices to be ignored by external camera HAL --><!-- <id>0</id> -->  <!-- No leading/trailing spaces --></ignore></Provider><!-- See ExternalCameraUtils.cpp for default values of Device configurations below--><Device><!-- Max JPEG buffer size in bytes--><MaxJpegBufferSize  bytes="24883200"/>  <!-- 3MB (~= 1080p YUV420) --><!-- Size of v4l2 buffer queue when streaming >= 30fps --><!-- Larger value: more request can be cached pipeline (less janky) --><!-- Smaller value: use less memory --><NumVideoBuffers  count="4"/><!-- Size of v4l2 buffer queue when streaming < 30fps --><NumStillBuffers  count="2"/><!-- List of maximum fps for various output sizes --><!-- Any image size smaller than the size listed in Limit row will reportfps (as minimum frame duration) up to the fpsBound value. --><FpsList><!-- width/height must be increasing, fpsBound must be decreasing--><Limit  width="176" height="144" fpsBound="60.0" /><Limit  width="176" height="144" fpsBound="30.0" /><Limit  width="176" height="144" fpsBound="20.0" /><Limit  width="176" height="144" fpsBound="15.0" /><Limit  width="320" height="240" fpsBound="60.0" /><Limit  width="320" height="240" fpsBound="30.0" /><Limit  width="320" height="240" fpsBound="20.0" /><Limit  width="320" height="240" fpsBound="15.0" /><Limit  width="352" height="288" fpsBound="30.0" /><Limit  width="352" height="288" fpsBound="20.0" /><Limit  width="352" height="288" fpsBound="15.0" /><Limit  width="640" height="480" fpsBound="60.0" /><Limit  width="640" height="480" fpsBound="30.0" /><Limit  width="640" height="480" fpsBound="20.0" /><Limit  width="640" height="480" fpsBound="15.0" /><Limit  width="640" height="480" fpsBound="10.0" /><Limit  width="800" height="600" fpsBound="30.0" /><Limit  width="800" height="600" fpsBound="20.0" /><Limit  width="800" height="600" fpsBound="15.0" /><Limit  width="1024" height="768" fpsBound="30.0" /><Limit  width="1024" height="768" fpsBound="20.0" /><Limit  width="1024" height="768" fpsBound="15.0" /><Limit  width="1024" height="768" fpsBound="10.0" /><Limit  width="1280" height="720" fpsBound="60.0" /><Limit  width="1280" height="720" fpsBound="30.0" /><Limit  width="1280" height="720" fpsBound="20.0" /><Limit  width="1280" height="720" fpsBound="15.0" /><Limit  width="1280" height="720" fpsBound="10.0" /><Limit  width="1280" height="800" fpsBound="30.0" /><Limit  width="1280" height="800" fpsBound="20.0" /><Limit  width="1280" height="800" fpsBound="15.0" /><Limit  width="1280" height="960" fpsBound="30.0" /><Limit  width="1280" height="960" fpsBound="20.0" /><Limit  width="1280" height="960" fpsBound="15.0" /><Limit  width="1280" height="1024" fpsBound="30.0" /><Limit  width="1280" height="1024" fpsBound="20.0" /><Limit  width="1280" height="1024" fpsBound="15.0" /><Limit  width="1600" height="1200" fpsBound="30.0" /><Limit  width="1600" height="1200" fpsBound="15.0" /><Limit  width="1920" height="1080" fpsBound="30.0" /><Limit  width="1920" height="1080" fpsBound="15.0" /><Limit  width="2048" height="1536" fpsBound="30.0" /><Limit  width="2592" height="1944" fpsBound="30.0" /><Limit  width="2592" height="1944" fpsBound="15.0" /><Limit  width="2592" height="1944" fpsBound="10.0" /><Limit  width="2592" height="1944" fpsBound="5.0" /><Limit  width="2688" height="1512" fpsBound="30.0" /><Limit  width="3840" height="2160" fpsBound="30.0" /><!-- image size larger than the last entry will not be supported--></FpsList><!-- orientation --><Orientation  degree="90"/></Device>
</ExternalCamera>

hardware/interfaces/camera/device/3.4/default/RgaCropScale.cpp

diff --git a/hardware/interfaces/camera/device/3.4/default/RgaCropScale.cpp b/hardware/interfaces/camera/device/3.4/default/RgaCropScale.cpp
index 23d018fb6d..4829d1d664 100644
--- a/hardware/interfaces/camera/device/3.4/default/RgaCropScale.cpp
+++ b/hardware/interfaces/camera/device/3.4/default/RgaCropScale.cpp
@@ -21,21 +21,21 @@namespace android {namespace camera2 {-#if (defined(TARGET_RK32) || defined(TARGET_RK3368))
+//#if (defined(TARGET_RK32) || defined(TARGET_RK3368))#define RGA_VER (2.0)#define RGA_ACTIVE_W (4096)#define RGA_VIRTUAL_W (4096)#define RGA_ACTIVE_H (4096)#define RGA_VIRTUAL_H (4096)-#else
-#define RGA_VER (1.0)
-#define RGA_ACTIVE_W (2048)
-#define RGA_VIRTUAL_W (4096)
-#define RGA_ACTIVE_H (2048)
-#define RGA_VIRTUAL_H (2048)
+//#else
+//#define RGA_VER (1.0)
+//#define RGA_ACTIVE_W (2048)
+//#define RGA_VIRTUAL_W (4096)
+//#define RGA_ACTIVE_H (2048)
+//#define RGA_VIRTUAL_H (2048)-#endif
+//#endif

这部分不修改会导致以下问题：

and...ternal-service  E  (dst_width > RGA_VIRTUAL_W) || (dst_height > RGA_VIRTUAL_H), switch to arm 
and...ternal-service  I  uid=1047(cameraserver) ExtCamOut identical 2 lines
and...ternal-service  E  (dst_width > RGA_VIRTUAL_W) || (dst_height > RGA_VIRTUAL_H), switch to arm 
com...d.quickpreview  I  Background concurrent copying GC freed 306(35KB) AllocSpace objects, 3(35MB) LOS objects, 48% free, 25MB/49MB, paused 862us total 143.804ms
and...ternal-service  E  (dst_width > RGA_VIRTUAL_W) || (dst_height > RGA_VIRTUAL_H), switch to arm 
and...ternal-service  E  (dst_width > RGA_VIRTUAL_W) || (dst_height > RGA_VIRTUAL_H), switch to arm 
and...er@2.1-service  I  [File] : hardware/rockchip/libgralloc/bifrost/src/core/mali_gralloc_formats.cpp; [Line] : 1858; [Func] : rk_gralloc_select_format;AFBC IS disabled for fb_target_layer.
and...ternal-service  E  (dst_width > RGA_VIRTUAL_W) || (dst_height > RGA_VIRTUAL_H), switch to arm 
and...ternal-service  I  uid=1047(cameraserver) ExtCamOut identical 2 lines
and...ternal-service  E  (dst_width > RGA_VIRTUAL_W) || (dst_height > RGA_VIRTUAL_H), switch to arm 
and...ternal-service  D  @debugShowFPS(1171): Camera 2176 Frames, 30.105 FPS
and...ternal-service  E  (dst_width > RGA_VIRTUAL_W) || (dst_height > RGA_VIRTUAL_H), switch to arm 
and...ternal-service  I  uid=1047(cameraserver) ExtCamOut identical 2 lines
and...ternal-service  E  (dst_width > RGA_VIRTUAL_W) || (dst_height > RGA_VIRTUAL_H), switch to arm 
and...er@2.1-service  I  [File] : hardware/rockchip/libgralloc/bifrost/src/core/mali_gralloc_formats.cpp; [Line] : 1858; [Func] : rk_gralloc_select_format;AFBC IS disabled for fb_target_layer.
and...ternal-service  E  (dst_width > RGA_VIRTUAL_W) || (dst_height > RGA_VIRTUAL_H), switch to arm 
and...ternal-service  I  uid=1047(cameraserver) ExtCamOut identical 4 lines
and...ternal-service  E  (dst_width > RGA_VIRTUAL_W) || (dst_height > RGA_VIRTUAL_H), switch to arm 
and...er@2.1-service  I  [File] : hardware/rockchip/libgralloc/bifrost/src/core/mali_gralloc_formats.cpp; [Line] : 1858; [Func] : rk_gralloc_select_format;AFBC IS disabled for fb_target_layer.
  1. Framework

frameworks/av/services/camera/libcameraservice/api1/client2/Parameters.h
上层接口解除1080P的限制.

diff --git a/frameworks/av/services/camera/libcameraservice/api1/client2/Parameters.h b/frameworks/av/services/camera/libcameraservice/api1/client2/Parameters.h
index 3a709c9791..2ee332a8c8 100644
--- a/frameworks/av/services/camera/libcameraservice/api1/client2/Parameters.h
+++ b/frameworks/av/services/camera/libcameraservice/api1/client2/Parameters.h
@@ -199,11 +199,11 @@ struct Parameters {// Max preview size allowed// This is set to a 1:1 value to allow for any aspect ratio that has// a max long side of 1920 pixels
-    static const unsigned int MAX_PREVIEW_WIDTH = 1920;
-    static const unsigned int MAX_PREVIEW_HEIGHT = 1920;
+    static const unsigned int MAX_PREVIEW_WIDTH = 3840;
+    static const unsigned int MAX_PREVIEW_HEIGHT = 2160;// Initial max preview/recording size bound
-    static const int MAX_INITIAL_PREVIEW_WIDTH = 1920;
-    static const int MAX_INITIAL_PREVIEW_HEIGHT = 1080;
+    static const int MAX_INITIAL_PREVIEW_WIDTH = 3840;
+    static const int MAX_INITIAL_PREVIEW_HEIGHT = 2160;// Aspect ratio tolerancestatic const CONSTEXPR float ASPECT_RATIO_TOLERANCE = 0.001;// Threshold for slow jpeg mode

编译验证

# 编译
mmm hardware/interfaces/camera/device/3.4/default/
# push 到主板
#adb push out/target/product/rk3566_r/vendor/lib64/hw/camera.rk30board.so /vendor/lib64/hw/
#adb push out/target/product/rk3566_r/vendor/lib/hw/camera.rk30board.so /vendor/lib/hw/
adb push out/target/product/rk3566_r/vendor/lib/camera.device@3.4-external-impl.so /vendor/lib/
adb push out/target/product/rk3566_r/vendor/lib64/camera.device@3.4-external-impl.so /vendor/lib64/# 编译
mmm /disk4/anson/rk3568_a11/frameworks/av/services/camera/libcameraservice/:libcameraservice
adb push out/target/product/rk3566_r/system/lib/libcameraservice.so  /system/lib/
adb push out/target/product/rk3566_r/system/lib64/libcameraservice.so /system/lib64/

小插曲

RK的Linux 烧录工具

# 低版本可以烧录 system.img
# -s system.img
# 新版本的SDK中，烧录super.img
Linux_Upgrade_Tool_v1.65/upgrade_tool DI -super super.img# 烧录完整固件
Linux_Upgrade_Tool_v1.65/upgrade_tool UF update.img

参考

Ubuntu下查看usb摄像头不同压缩格式支持的分辨率

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