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Commit500fd45

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Merge pull request#24592 from savuor:recorder_android
Android sample for VideoWriter#24592This PR:* adds an Android sample for video recording with MediaNDK and built-in MJPEG.* adds a flag `--no_media_ndk` for `build_sdk.py` script to disable MediaNDK linkage.### Pull Request Readiness ChecklistSee details athttps://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request- [x] I agree to contribute to the project under Apache 2 License.- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV- [x] The PR is proposed to the proper branch- [x] There is a reference to the original bug report and related work- [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name.- [x] The feature is well documented and sample code can be built with the project CMake
1 parent2e37a69 commit500fd45

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9 files changed

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9 files changed

+475
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‎platforms/android/build_sdk.py‎

Lines changed: 6 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -215,7 +215,7 @@ def clean_library_build_dir(self):
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fordin ["CMakeCache.txt","CMakeFiles/","bin/","libs/","lib/","package/","install/samples/"]:
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rm_one(d)
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defbuild_library(self,abi,do_install):
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defbuild_library(self,abi,do_install,no_media_ndk):
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cmd= [self.cmake_path,"-GNinja"]
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cmake_vars=dict(
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CMAKE_TOOLCHAIN_FILE=self.get_toolchain_file(),
@@ -260,6 +260,9 @@ def build_library(self, abi, do_install):
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ifdo_install:
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cmd.extend(["-DBUILD_TESTS=ON","-DINSTALL_TESTS=ON"])
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ifno_media_ndk:
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cmake_vars['WITH_ANDROID_MEDIANDK']="OFF"
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cmake_vars.update(abi.cmake_vars)
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cmd+= ["-D%s='%s'"% (k,v)for (k,v)incmake_vars.items()ifvisnotNone]
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cmd.append(self.opencvdir)
@@ -370,6 +373,7 @@ def get_ndk_dir():
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parser.add_argument('--opencl',action="store_true",help="Enable OpenCL support")
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parser.add_argument('--no_kotlin',action="store_true",help="Disable Kotlin extensions")
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parser.add_argument('--shared',action="store_true",help="Build shared libraries")
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parser.add_argument('--no_media_ndk',action="store_true",help="Do not link Media NDK (required for video I/O support)")
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args=parser.parse_args()
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log.basicConfig(format='%(message)s',level=log.DEBUG)
@@ -447,7 +451,7 @@ def get_ndk_dir():
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os.chdir(builder.libdest)
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builder.clean_library_build_dir()
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builder.build_library(abi,do_install)
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builder.build_library(abi,do_install,args.no_media_ndk)
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builder.gather_results()
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‎samples/android/CMakeLists.txt‎

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Original file line numberDiff line numberDiff line change
@@ -13,6 +13,7 @@ add_subdirectory(image-manipulations)
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add_subdirectory(camera-calibration)
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add_subdirectory(color-blob-detection)
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add_subdirectory(mobilenet-objdetect)
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add_subdirectory(video-recorder)
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add_subdirectory(tutorial-1-camerapreview)
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add_subdirectory(tutorial-2-mixedprocessing)
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add_subdirectory(tutorial-3-cameracontrol)
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@@ -0,0 +1,12 @@
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set(sample example-video-recorder)
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if(BUILD_FAT_JAVA_LIB)
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set(native_deps opencv_java)
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else()
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set(native_deps videoio)
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endif()
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add_android_project(${sample}"${CMAKE_CURRENT_SOURCE_DIR}" LIBRARY_DEPS"${OPENCV_ANDROID_LIB_DIR}" SDK_TARGET 11"${ANDROID_SDK_TARGET}" NATIVE_DEPS${native_deps})
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if(TARGET${sample})
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add_dependencies(opencv_android_examples${sample})
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endif()
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@@ -0,0 +1,36 @@
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apply plugin: 'com.android.application'
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android {
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namespace 'org.opencv.samples.recorder'
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compileSdkVersion @ANDROID_COMPILE_SDK_VERSION@
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defaultConfig {
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applicationId "org.opencv.samples.recorder"
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minSdkVersion @ANDROID_MIN_SDK_VERSION@
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targetSdkVersion @ANDROID_TARGET_SDK_VERSION@
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versionCode 301
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versionName "3.01"
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}
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buildTypes {
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release {
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minifyEnabled false
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proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
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}
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}
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sourceSets {
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main {
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java.srcDirs = @ANDROID_SAMPLE_JAVA_PATH@
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aidl.srcDirs = @ANDROID_SAMPLE_JAVA_PATH@
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res.srcDirs = @ANDROID_SAMPLE_RES_PATH@
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manifest.srcFile '@ANDROID_SAMPLE_MANIFEST_PATH@'
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}
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}
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}
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dependencies {
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//implementation fileTree(dir: 'libs', include: ['*.jar'])
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if (gradle.opencv_source == "sdk_path") {
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implementation project(':opencv')
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} else if (gradle.opencv_source == "maven_local" || gradle.opencv_source == "maven_cenral") {
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implementation 'org.opencv:opencv:@OPENCV_VERSION_PLAIN@'
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}
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}
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<?xml version="1.0" encoding="utf-8"?>
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<manifestxmlns:android="http://schemas.android.com/apk/res/android"
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package="org.opencv.samples.recorder"
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>
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<application
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android:label="@string/app_name"
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android:icon="@drawable/icon"
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android:theme="@android:style/Theme.NoTitleBar.Fullscreen" >
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<activity
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android:exported="true"
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android:name="RecorderActivity"
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android:label="@string/app_name"
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android:screenOrientation="landscape"
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android:configChanges="keyboardHidden|orientation">
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<intent-filter>
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<actionandroid:name="android.intent.action.MAIN" />
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<categoryandroid:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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</application>
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<supports-screensandroid:resizeable="true"
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android:smallScreens="true"
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android:normalScreens="true"
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android:largeScreens="true"
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android:anyDensity="true" />
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<uses-permissionandroid:name="android.permission.CAMERA"/>
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<uses-permissionandroid:name="android.permission.WRITE_EXTERNAL_STORAGE" />
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<uses-featureandroid:name="android.hardware.camera"android:required="false"/>
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<uses-featureandroid:name="android.hardware.camera.autofocus"android:required="false"/>
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<uses-featureandroid:name="android.hardware.camera.front"android:required="false"/>
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<uses-featureandroid:name="android.hardware.camera.front.autofocus"android:required="false"/>
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</manifest>
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<FrameLayoutxmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:tools="http://schemas.android.com/tools"
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xmlns:opencv="http://schemas.android.com/apk/res-auto"
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android:layout_width="match_parent"
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android:layout_height="match_parent" >
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<Button
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android:id="@+id/btn1"
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android:layout_width="wrap_content"
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android:layout_height="50dp"
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android:layout_margin="10dp"
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android:text="Start Camera" />
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<TextView
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android:id="@+id/textview1"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_gravity="right"
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android:layout_margin="10dp"
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android:text="Status: Initialized"
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android:textColor="#FF0000" />
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<org.opencv.android.JavaCameraView
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android:layout_width="fill_parent"
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android:layout_height="fill_parent"
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android:visibility="gone"
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android:id="@+id/recorder_activity_java_surface_view"
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opencv:show_fps="true"
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opencv:camera_id="any" />
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<ImageView
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android:id="@+id/image_view"
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android:layout_width="fill_parent"
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android:layout_height="fill_parent"
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android:visibility="gone"
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/>
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</FrameLayout>
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<?xml version="1.0" encoding="utf-8"?>
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<resources>
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<stringname="app_name">OpenCV Video Recorder</string>
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</resources>

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