自己怎么建个免费网站,手机网站功能开发方案,网站开发自学还是培训,科技型中小企业服务平台官网入口部分借鉴于#xff1a;https://blog.csdn.net/weixin_45639314/article/details/142210634
目录
一、需求介绍
二、UVC介绍
三、解析
四、补丁修改
1、预览的限制主要存在于hal层和framework层
2、添加所需要的分辨率#xff1a;
3、hal层修改
4、frameworks
5、备…部分借鉴于https://blog.csdn.net/weixin_45639314/article/details/142210634
目录
一、需求介绍
二、UVC介绍
三、解析
四、补丁修改
1、预览的限制主要存在于hal层和framework层
2、添加所需要的分辨率
3、hal层修改
4、frameworks
5、备用方案 一、需求介绍 这个问题是碰到了一个客户他的需求是在Android11 rk3566上需要支持1080p以上的usb摄像头支持而在我们Android11系统原生的相机中可以打开的最大分辨率也是1080p即2.1百万像素。
而我们客户需要支持2560*14402k-四百万像素和最大3840*26104k-800万像素。
二、UVC介绍 UVCUSB Video Class是一种 USB 设备类标准允许通过 USB 连接的视频设备如摄像头、网络摄像头和其他视频捕捉设备与计算机或其他主机设备进行通信。UVC 使得视频设备的使用变得更加简单和通用因为它不需要特定的驱动程序主机操作系统通常可以直接识别和使用这些设备。
特点
1、即插即用: UVC 设备可以在连接到主机时自动识别无需安装额外的驱动程序。这使得用户能够快速方便地使用视频设备。 2、跨平台支持: UVC 设备通常可以在多种操作系统上工作包括 Windows、macOS 和 Linux。这种跨平台的兼容性使得 UVC 成为视频设备的标准选择。 3、视频格式支持: UVC 支持多种视频格式和分辨率包括 MJPEG、YUY2、H.264 等。设备可以根据主机的能力和应用程序的需求选择合适的格式。 4、控制功能: UVC 设备通常支持多种控制功能例如亮度、对比度、饱和度、焦距等。这些控制可以通过 USB 接口进行调整。 5、流媒体支持: UVC 设备可以用于实时视频流传输适用于视频会议、直播、监控等应用场景。
三、解析
1、v4l2命令的使用
//列出所有设视频设备
v4l2-ctl --list-devices
//获取特定设备的支持格式
v4l2-ctl --device/dev/video23 --list-formats
//获取设备支持的分辨率
v4l2-ctl -d /dev/video23 --list-framesizesYUYV
2、查看打开的摄像头的各种信息
dumpsys media.camera
四、补丁修改
1、预览的限制主要存在于hal层和framework层
关于摄像头部分的源码目录
#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/2、添加所需要的分辨率
diff --git a/device/rockchip/common/external_camera_config.xml b/device/rockchip/common/external_camera_config.xml
index d377826..d5ddd9d 100755
--- a/external_camera_config.xmlb/external_camera_config.xml-60,13 60,18 Limit width1600 height1200 fpsBound15.0 /Limit width1920 height1080 fpsBound30.0 /Limit width1920 height1080 fpsBound15.0 /Limit width2560 height1440 fpsBound30.0 /Limit width2560 height1440 fpsBound15.0 /Limit width2592 height1944 fpsBound30.0 /Limit width2592 height1944 fpsBound15.0 /Limit width2592 height1944 fpsBound10.0 /Limit width2592 height1944 fpsBound5.0 /Limit width3840 height2160 fpsBound30.0 /Limit width3840 height2160 fpsBound15.0 /!-- image size larger than the last entry will not be supported--/FpsList!-- orientation --
- Orientation degree90/!-- Orientation degree90/ 这里调整的是摄像头的旋转方向 --Orientation degree0/ !-- for qipai camera --/Device/ExternalCamera3、hal层修改
源码路径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 55a2c3d08d..d3eb278093 100644
--- a/hardware/interfaces/camera/device/3.4/default/RgaCropScale.cppb/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
int RgaCropScale::CropScaleNV12Or21(struct Params* in, struct Params* out)4、frameworks
源码路径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..163d060b81 100644
--- a/frameworks/av/services/camera/libcameraservice/api1/client2/Parameters.hb/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 4656;static const unsigned int MAX_PREVIEW_HEIGHT 3496;// 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 4656;static const int MAX_INITIAL_PREVIEW_HEIGHT 3496;// Aspect ratio tolerancestatic const CONSTEXPR float ASPECT_RATIO_TOLERANCE 0.001;// Threshold for slow jpeg mode到这里系统相机—设置—分辨率与画质应该就可以看到对应的最大的分辨率了。
5、备用方案
如果以上修改未能生效可参考以下修改该部分有经RK厂商修改
hardware/interfaces/camera
From 75e1d29219f929404f3b42b994ac36dde19b0c82 Mon Sep 17 00:00:00 2001
From: Wang Panzhenzhuan randy.wangrock-chips.com
Date: Tue, 19 Jan 2021 21:26:03 0800
Subject: [PATCH 1/4] Camera: fix loss resolution issuesSigned-off-by: Wang Panzhenzhuan randy.wangrock-chips.com
Change-Id: I01f614eec54168ab34e0c7376296a64804af9a1a
---.../3.4/default/ExternalCameraDevice.cpp | 75 ---.../3.4/default/ExternalCameraUtils.cpp | 0.../ExternalCameraUtils.h | 1 3 files changed, 65 insertions(), 11 deletions(-)mode change 100644 100755 camera/device/3.4/default/ExternalCameraUtils.cppmode change 100644 100755 camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraUtils.hdiff --git a/camera/device/3.4/default/ExternalCameraDevice.cpp b/camera/device/3.4/default/ExternalCameraDevice.cpp
index d196e4b4f..882698fd3 100755
--- a/camera/device/3.4/default/ExternalCameraDevice.cppb/camera/device/3.4/default/ExternalCameraDevice.cpp-338,6 338,7 status_t ExternalCameraDevice::initDefaultCharsKeys(// android.jpegconst int32_t jpegAvailableThumbnailSizes[] {0, 0,160, 120,176, 144,240, 144,256, 144,-587,15 588,24 status_t ExternalCameraDevice::initOutputCharskeysByFormat(return UNKNOWN_ERROR;} ALOGV(inputfourcc:%c%c%c%c,fourcc 0xFF,(fourcc 8) 0xFF,(fourcc 16) 0xFF,(fourcc 24) 0xFF);
std::vectorint32_t streamConfigurations;std::vectorint64_t minFrameDurations;std::vectorint64_t stallDurations;for (const auto supportedFormat : mSupportedFormats) {
#if 0// wpzz add dont need skip now.if (supportedFormat.fourcc ! fourcc) {// Skip 4CCs not meant for the halFormatscontinue;}
#endiffor (const auto format : halFormats) {streamConfigurations.push_back(format);streamConfigurations.push_back(supportedFormat.width);-633,6 643,13 status_t ExternalCameraDevice::initOutputCharskeysByFormat(stallDurations.push_back(supportedFormat.height);stallDurations.push_back(stall_duration);}ALOGV(supportedFormat:%c%c%c%c, w %d, h %d, minFrameDuration(%lld),supportedFormat.fourcc 0xFF,(supportedFormat.fourcc 8) 0xFF,(supportedFormat.fourcc 16) 0xFF,(supportedFormat.fourcc 24) 0xFF,supportedFormat.width, supportedFormat.height, minFrameDuration);
}UPDATE(streamConfiguration, streamConfigurations.data(), streamConfigurations.size());-667,6 684,8 bool ExternalCameraDevice::calculateMinFps(fpsRanges.push_back(framerate);}minFps / 2;if (0 minFps)minFps 1;int64_t maxFrameDuration 1000000000LL / minFps;UPDATE(ANDROID_CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES, fpsRanges.data(),-713,26 732,24 status_t ExternalCameraDevice::initOutputCharsKeys(}}- if (hasDepth) {
- initOutputCharskeysByFormat(metadata, V4L2_PIX_FMT_Z16, halDepthFormats,
- ANDROID_DEPTH_AVAILABLE_DEPTH_STREAM_CONFIGURATIONS_OUTPUT,
- ANDROID_DEPTH_AVAILABLE_DEPTH_STREAM_CONFIGURATIONS,
- ANDROID_DEPTH_AVAILABLE_DEPTH_MIN_FRAME_DURATIONS,
- ANDROID_DEPTH_AVAILABLE_DEPTH_STALL_DURATIONS);
- }if (hasColor) {initOutputCharskeysByFormat(metadata, V4L2_PIX_FMT_MJPEG, halFormats,ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT,ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS,ANDROID_SCALER_AVAILABLE_MIN_FRAME_DURATIONS,ANDROID_SCALER_AVAILABLE_STALL_DURATIONS);
- }
- if (hasColor_yuv) {} else if (hasColor_yuv) {initOutputCharskeysByFormat(metadata, V4L2_PIX_FMT_YUYV, halFormats,ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT,ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS,ANDROID_SCALER_AVAILABLE_MIN_FRAME_DURATIONS,ANDROID_SCALER_AVAILABLE_STALL_DURATIONS);} else if (hasDepth) {initOutputCharskeysByFormat(metadata, V4L2_PIX_FMT_Z16, halDepthFormats,ANDROID_DEPTH_AVAILABLE_DEPTH_STREAM_CONFIGURATIONS_OUTPUT,ANDROID_DEPTH_AVAILABLE_DEPTH_STREAM_CONFIGURATIONS,ANDROID_DEPTH_AVAILABLE_DEPTH_MIN_FRAME_DURATIONS,ANDROID_DEPTH_AVAILABLE_DEPTH_STALL_DURATIONS);}calculateMinFps(metadata);-765,7 782,7 status_t ExternalCameraDevice::initOutputCharsKeys(void ExternalCameraDevice::getFrameRateList(int fd, double fpsUpperBound, SupportedV4L2Format* format) {format-frameRates.clear();
-format-maxFramerate 1.0f;v4l2_frmivalenum frameInterval {.pixel_format format-fourcc,.width format-width,-773,6 790,13 void ExternalCameraDevice::getFrameRateList(.index 0}; ALOGV(format:%c%c%c%c, w %d, h %d, fpsUpperBound %f,frameInterval.pixel_format 0xFF,(frameInterval.pixel_format 8) 0xFF,(frameInterval.pixel_format 16) 0xFF,(frameInterval.pixel_format 24) 0xFF,frameInterval.width, frameInterval.height, fpsUpperBound);
for (frameInterval.index 0;TEMP_FAILURE_RETRY(ioctl(fd, VIDIOC_ENUM_FRAMEINTERVALS, frameInterval)) 0;frameInterval.index) {-782,6 806,9 void ExternalCameraDevice::getFrameRateList(frameInterval.discrete.numerator,frameInterval.discrete.denominator};double framerate fr.getDouble();if (framerate format-maxFramerate) {format-maxFramerate framerate;}if (framerate fpsUpperBound) {continue;}-837,7 864,7 void ExternalCameraDevice::trimSupportedFormats(const auto maxSize sortedFmts[sortedFmts.size() - 1];float maxSizeAr ASPECT_RATIO(maxSize);
-
#if 0 //该位置确认自己的camera调用的是哪一个接口// Remove formats that has aspect ratio not croppable from largest sizestd::vectorSupportedV4L2Format out;for (const auto fmt : sortedFmts) {-855,6 882,15 void ExternalCameraDevice::trimSupportedFormats(maxSize.width, maxSize.height);}}
#elsestd::vectorSupportedV4L2Format out;//all enum format added to SupportedFormatALOGD(%s(%d): dont care ratio of horizontally or vertical __FUNCTION__, __LINE__);for (const auto fmt : sortedFmts) {out.push_back(fmt);}
#endifsortedFmts out;} -1007,6 1043,23 void ExternalCameraDevice::initSupportedFormatsLocked(int fd) {mCroppingType VERTICAL;}}/* mSupportedFormats has been sorted by sizeremove the same size format */std::vectorSupportedV4L2Format tmp;for (int i 0; i mSupportedFormats.size(); ) {if ((mSupportedFormats[i1].width mSupportedFormats[i].width) (mSupportedFormats[i1].height mSupportedFormats[i].height)) {if (mSupportedFormats[i1].maxFramerate mSupportedFormats[i].maxFramerate)tmp.push_back(mSupportedFormats[i1]);elsetmp.push_back(mSupportedFormats[i]);i i 2;} else {tmp.push_back(mSupportedFormats[i]);i;}}mSupportedFormats tmp;}spExternalCameraDeviceSession ExternalCameraDevice::createSession(diff --git a/camera/device/3.4/default/ExternalCameraUtils.cpp b/camera/device/3.4/default/ExternalCameraUtils.cpp
old mode 100644
new mode 100755
diff --git a/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraUtils.h b/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraUtils.h
old mode 100644
new mode 100755
index 341c62218..669a2bf68
--- a/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraUtils.hb/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraUtils.h-110,6 110,7 struct SupportedV4L2Format {uint32_t durationDenominator; // frame duration denominator. Ex: 30double getDouble() const; // FrameRate in double. Ex: 30.0};double maxFramerate; //该补丁若代码中无对应的地方可修改同级文件ExternalCameraUtils_3.4.h 的相应位置是一样的std::vectorFrameRate frameRates;};--
2.17.1
此外修改分辨率问题也可参考如下
//显示更多拍照分辨率的 改应用代码里这个地方。private static ListSize pickUpToThree(ListSize sizes) {ListSize result new ArrayListSize();Size largest sizes.get(0);if (largest.width() ! 1920 || largest.height() ! 1088)result.add(largest);Size lastSize largest;for (Size size : sizes) {if (size ! null size.width() 1920 size.height() 1088)continue; result.add(size);- double targetArea Math.pow(.5, result.size()) * area(largest); /*double targetArea Math.pow(.5, result.size()) * area(largest);if (area(size) targetArea) {// This candidate is smaller than half the mega pixels of the// last one. Lets see whether the previous size, or this size// is closer to the desired target.if (!result.contains(lastSize) (targetArea - area(lastSize) area(size) - targetArea)) {result.add(lastSize);} else {result.add(size);}}lastSize size;if (result.size() 3) {break;}}// If we have less than three, we can add the smallest size.if (result.size() 3 !result.contains(lastSize)) {result.add(lastSize);- } }*/return result;}
