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  • Soumettre améliorations et plugins supplémentaires

    10 avril 2011

    Si vous avez développé une nouvelle extension permettant d’ajouter une ou plusieurs fonctionnalités utiles à MediaSPIP, faites le nous savoir et son intégration dans la distribution officielle sera envisagée.
    Vous pouvez utiliser la liste de discussion de développement afin de le faire savoir ou demander de l’aide quant à la réalisation de ce plugin. MediaSPIP étant basé sur SPIP, il est également possible d’utiliser le liste de discussion SPIP-zone de SPIP pour (...)

  • D’autres logiciels intéressants

    12 avril 2011, par

    On ne revendique pas d’être les seuls à faire ce que l’on fait ... et on ne revendique surtout pas d’être les meilleurs non plus ... Ce que l’on fait, on essaie juste de le faire bien, et de mieux en mieux...
    La liste suivante correspond à des logiciels qui tendent peu ou prou à faire comme MediaSPIP ou que MediaSPIP tente peu ou prou à faire pareil, peu importe ...
    On ne les connais pas, on ne les a pas essayé, mais vous pouvez peut être y jeter un coup d’oeil.
    Videopress
    Site Internet : (...)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

Sur d’autres sites (5443)

  • Qt 5.2 / OpenCV 2.4.8 - Can’t open video files via VideoCapture

    21 février 2014, par Zamahra

    I have a big problem that i can’t solve by myself. OpenCV itself works fine, but i’m not able to load videos. Here’s my code :

    PRO- File

    QT       += core gui
    

    
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
    

    
TARGET = videoredux
    
TEMPLATE = app
    

    
INCLUDEPATH += C:/OpenCV/opencv_bin/install/include
    
LIBS += -LC:\\OpenCV\\opencv_bin\\bin \
    
    libopencv_core248d \
    
    libopencv_highgui248d \
    
    libopencv_imgproc248d \
    
    libopencv_features2d248d \
    
    libopencv_calib3d248d \
    
    libopencv_video248d \
    

    

    
SOURCES += main.cpp\
    
        mainwindow.cpp
    

    
HEADERS  += mainwindow.h
    

    
FORMS    += mainwindow.ui

    and the MainWindow Class :

    #include "mainwindow.h"
    
#include "ui_mainwindow.h"
    
#include <qfiledialog>
    
#include <iostream>
    
#include 
    
#include <opencv2></opencv2>core/core.hpp>
    
#include <opencv2></opencv2>highgui/highgui.hpp>
    
#include <opencv2></opencv2>imgproc/imgproc.hpp>
    
#include <opencv></opencv>cv.h>
    

    

    
MainWindow::MainWindow(QWidget *parent) :
    
QMainWindow(parent),
    
ui(new Ui::MainWindow)
    
{
    
    ui->setupUi(this);
    
    ui->videoStatusLabel->setText("Kein Video geladen.");
    

    
    // SIGNALS &amp; SLOTS
    

    
    QObject::connect(ui->chooseVideoButton,SIGNAL(clicked()),
    
                 this,SLOT(chooseVideo()));
    
    QObject::connect(ui->startButton,SIGNAL(clicked()),
    
                 this,SLOT(startProcess()));
    

    
}
    

    
void MainWindow::chooseVideo(){
    

    
    QString fileName = QFileDialog::getOpenFileName(this,
    
         tr("Open Video"), "/home", tr("Video Files (*.avi *.mp4 *.mpeg *.mpg)"));
    
    qDebug() &lt;&lt; "Path:" &lt;&lt; fileName;
    
    ui->videoStatusLabel->setText(fileName);
    
}
    

    
void MainWindow::startProcess(){
    
    QString videoPath = ui->videoStatusLabel->text();
    
    QFileInfo video(videoPath);
    
    if(video.exists()){
    
        const std::string path = videoPath.toUtf8().constData();
    
        cv::VideoCapture capture(path);
    
        cv::Mat frame;
    

    
        if(!capture.isOpened()){
    
            qDebug() &lt;&lt; "Error, video not loaded";
    
        }
    

    
        cv::namedWindow("window",1);
    
        while(true)
    
        {
    
            bool success = capture.read(frame);
    
            if(success == false){
    
                break;
    
            }
    
            cv::imshow("window",frame);
    
            cv::waitKey(20);
    
        }
    
        cv::waitKey(0);
    
    }
    
    else{
    
        qDebug() &lt;&lt; "Error, File doesn&#39;t exist";
    
    }
    
}
    
</iostream></qfiledialog>

    The paths are correct, I tried many different video formats but he never loads the videos. I’m running Qt on a Windows 8 machine and i have “K-Lite Codec Pack 10.2.0 Basic” and ffmpeg installed. The videos are playing properly with my video players. I also tried to copy the .dll to the working directory, searched for opencv dll's in the system32 directory and rebuild OpenCV with mingw on this computer. I know that many people have the same problems, but none of their suggestions solved it. Does anyone know how to solve this problem ?

    Thank you very much !

    Nadine

    ----UPDATE---- I still can't open video files, so I programmed the application on a Windows7 64-Bit system. It worked fine, but when I try to open the application on a Windows8 computer it still can't open the file. It doesn't matter which codecs are installed, because it generally runs on every Windows7 computer and fails on every Windows8 computer.. The same for older OpenCV-Versions. Is there a general problem with OpenCV and Windows8 ?

  • Build FFMPEG 3.1.4 for Android

    20 octobre 2016, par Vladimir Kulyk

    I used this and this methods to build latest (3.1.4) FFMPEG version for Android.
    Build was succeed.
    I got several folders with sources / headers / .o files.
    But unfortunately there are no .so files I need.
    Are there some updated script for building latest FFMPEG for android ?
    Or, how to convert .o and other files to .so ?

  • undefined reference to ffmpeg functions in native code using Android Studio 2.2

    12 octobre 2016, par Krzysztof Kansy

    I have a problem with using ffmpeg in Android Studio 2.2 using NDK 13 and new Cmake building system. FFmpeg version is 3.1.4.
    The system I’m working on is Linux Mint 18 64-bit.
    At the build time I’m getting undefined reference error each time I use ffpeg functions.

    My MainActivity.java :

    public class MainActivity extends AppCompatActivity {
    

    
    @Override
    
    protected void onCreate(Bundle savedInstanceState) {
    
        super.onCreate(savedInstanceState);
    
        setContentView(R.layout.activity_main);
    

    
    // Example of a call to a native method
    
    TextView tv = (TextView) findViewById(R.id.sample_text);
    
    tv.setText(stringFromJNI());
    
    }
    

    
    /**
    
     * A native method that is implemented by the 'native-lib' native library,
    
     * which is packaged with this application.
    
     */
    
    public native String stringFromJNI();
    

    
    // Used to load the 'native-lib' library on application startup.
    
    static {
    
        System.loadLibrary("native-lib");
    
    }
    
}

    My native class (undefined reference is pointing to av_init_packet(&avPacket)) :

    #include 
    
#include <string>
    
#include <android></android>log.h>
    
#include <libavcodec></libavcodec>avcodec.h>
    

    

    
extern "C"
    
jstring
    
Java_com_example_tito_jnitest_MainActivity_stringFromJNI(
    
        JNIEnv* env,
    
        jobject /* this */) {
    

    
    std::string hello = "Hello from C++";
    

    
    __android_log_print(ANDROID_LOG_INFO, "JNItest", "Hello from JNI!");
    

    
    AVPacket avPacket;
    
    av_init_packet(&amp;avPacket);
    

    
    return env->NewStringUTF(hello.c_str());
    
}
    
</string>

    build.gradle script

    apply plugin: 'com.android.application'
    

    
android {
    
    compileSdkVersion 24
    
    buildToolsVersion "24.0.3"
    
    defaultConfig {
    
        applicationId "com.example.tito.jnitest"
    
        minSdkVersion 19
    
        targetSdkVersion 24
    
        versionCode 1
    
        versionName "1.0"
    
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    
        externalNativeBuild {
    
            cmake {
    
                // Passes optional arguments to CMake.
    
                cppFlags "-frtti -fexceptions"
    
                abiFilters 'armeabi'
    
            }
    
        }
    
    }
    

    
    sourceSets {
    
        main {
    
            jniLibs.srcDirs = ['/home/tito/AndroidStudioProjects/JNItest/app/src/main/jniLibs']
    
        }
    
    }
    

    
    buildTypes {
    
        release {
    
            minifyEnabled false
    
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    
        }
    
    }
    
    externalNativeBuild {
    
        cmake {
    
            path "CMakeLists.txt"
    
        }
    
    }
    
}
    

    
dependencies {
    
    compile fileTree(dir: 'libs', include: ['*.jar'])
    
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    
        exclude group: 'com.android.support', module: 'support-annotations'
    
    })
    
    compile 'com.android.support:appcompat-v7:24.2.1'
    
    testCompile 'junit:junit:4.12'
    
}

    CMakeLists.txt

    cmake_minimum_required(VERSION 3.4.1)
    

    
include_directories(/home/tito/Android/Sdk/ndk-bundle/sources/ffmpeg-3.1.4/android/${ANDROID_ABI}/include)
    

    
#set(CMAKE_VERBOSE_MAKEFILE on)
    
#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
    

    
add_library( avutil
    
             SHARED
    
             IMPORTED )
    

    
set_target_properties(
    
                avutil
    
                PROPERTIES IMPORTED_LOCATION
    
                /home/tito/AndroidStudioProjects/JNItest/app/src/main/jniLibs/${ANDROID_ABI}/libavutil-55.so )
    

    
add_library( swscale
    
             SHARED
    
             IMPORTED )
    

    
set_target_properties(
    
                swscale
    
                PROPERTIES IMPORTED_LOCATION
    
                /home/tito/AndroidStudioProjects/JNItest/app/src/main/jniLibs/${ANDROID_ABI}/libswscale-4.so )
    

    
add_library( swresample
    
             SHARED
    
             IMPORTED )
    

    
set_target_properties(
    
                swresample
    
                PROPERTIES IMPORTED_LOCATION
    
                /home/tito/AndroidStudioProjects/JNItest/app/src/main/jniLibs/${ANDROID_ABI}/libswresample-2.so )
    

    
add_library( avcodec
    
             SHARED
    
             IMPORTED )
    

    
set_target_properties(
    
                avcodec
    
                PROPERTIES IMPORTED_LOCATION
    
                /home/tito/AndroidStudioProjects/JNItest/app/src/main/jniLibs/${ANDROID_ABI}/libavcodec-57.so )
    

    
add_library( avfilter
    
             SHARED
    
             IMPORTED )
    

    
set_target_properties(
    
                avfilter
    
                PROPERTIES IMPORTED_LOCATION
    
                /home/tito/AndroidStudioProjects/JNItest/app/src/main/jniLibs/${ANDROID_ABI}/libavfilter-6.so )
    

    
add_library( avformat
    
             SHARED
    
             IMPORTED )
    

    
set_target_properties(
    
                avformat
    
                PROPERTIES IMPORTED_LOCATION
    
                /home/tito/AndroidStudioProjects/JNItest/app/src/main/jniLibs/${ANDROID_ABI}/libavformat-57.so )
    

    
add_library( avdevice
    
             SHARED
    
             IMPORTED )
    

    
set_target_properties(
    
                avdevice
    
                PROPERTIES IMPORTED_LOCATION
    
                /home/tito/AndroidStudioProjects/JNItest/app/src/main/jniLibs/${ANDROID_ABI}/libavdevice-57.so )
    

    
add_library( native-lib
    
             SHARED
    
             src/main/cpp/native-lib.cpp )
    

    
find_library( log-lib
    
              log )
    

    
target_link_libraries(native-lib ${log-lib} avutil swscale swresample avcodec avfilter avformat avdevice)

    Build process of ffmpeg seemed to be successful. Here’s my build script :

    #!/bin/bash
    
NDK=/home/tito/Android/Sdk/ndk-bundle
    
SYSROOT=$NDK/platforms/android-19/arch-arm/
    
TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64
    
function build_one
    
{
    
./configure \
    
--prefix=$PREFIX \
    
--disable-static \
    
--enable-shared \
    
--disable-doc \
    
--disable-ffmpeg \
    
--disable-ffplay \
    
--disable-ffprobe \
    
--disable-ffserver \
    
--disable-doc \
    
--cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
    
--target-os=linux \
    
--arch=arm \
    
--enable-cross-compile \
    
--sysroot=$SYSROOT \
    
--extra-cflags="-Os -fpic -marm" \
    
--extra-ldflags="-marm" \
    
$ADDITIONAL_CONFIGURE_FLAG
    
make clean
    
make
    
make install
    
}
    
CPU=armeabi
    
PREFIX=$(pwd)/android/$CPU
    
build_one

    One thing I noticed that could indicate that something is wrong with ffmpeg build is warning WARNING: /home/tito/Android/Sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-pkg-config not found, library detection may fail. during building. I’m not sure if this may be cause of problems.

    I was trying to build for all of the ABIs, but for now I decided to focus on making just armeabi working. I’m having exact same failure after using e.g. arm64-v8a.

    Finally, here is the gradle console’s content with error :

    Executing tasks: [:app:assembleDebug]
    

    
Configuration on demand is an incubating feature.
    
Incremental java compilation is an incubating feature.
    
:app:preBuild UP-TO-DATE
    
:app:preDebugBuild UP-TO-DATE
    
:app:checkDebugManifest
    
:app:preReleaseBuild UP-TO-DATE
    
:app:prepareComAndroidSupportAnimatedVectorDrawable2421Library UP-TO-DATE
    
:app:prepareComAndroidSupportAppcompatV72421Library UP-TO-DATE
    
:app:prepareComAndroidSupportSupportCompat2421Library UP-TO-DATE
    
:app:prepareComAndroidSupportSupportCoreUi2421Library UP-TO-DATE
    
:app:prepareComAndroidSupportSupportCoreUtils2421Library UP-TO-DATE
    
:app:prepareComAndroidSupportSupportFragment2421Library UP-TO-DATE
    
:app:prepareComAndroidSupportSupportMediaCompat2421Library UP-TO-DATE
    
:app:prepareComAndroidSupportSupportV42421Library UP-TO-DATE
    
:app:prepareComAndroidSupportSupportVectorDrawable2421Library UP-TO-DATE
    
:app:prepareDebugDependencies
    
:app:compileDebugAidl UP-TO-DATE
    
:app:compileDebugRenderscript UP-TO-DATE
    
:app:generateDebugBuildConfig UP-TO-DATE
    
:app:generateDebugResValues UP-TO-DATE
    
:app:generateDebugResources UP-TO-DATE
    
:app:mergeDebugResources UP-TO-DATE
    
:app:processDebugManifest UP-TO-DATE
    
:app:processDebugResources
    
:app:generateDebugSources
    
:app:incrementalDebugJavaCompilationSafeguard UP-TO-DATE
    
:app:compileDebugJavaWithJavac UP-TO-DATE
    
:app:generateJsonModelDebug UP-TO-DATE
    
:app:externalNativeBuildDebug
    
  building /home/tito/AndroidStudioProjects/JNItest/app/build/intermediates/cmake/debug/obj/armeabi/libnative-lib.so
    
:app:externalNativeBuildDebug FAILED
    

    
FAILURE: Build failed with an exception.
    

    
* What went wrong:
    
Execution failed for task ':app:externalNativeBuildDebug'.
    
> Build command failed.
    
  Error while executing '/home/tito/Android/Sdk/cmake/3.6.3155560/bin/cmake' with arguments {--build /home/tito/AndroidStudioProjects/JNItest/app/.externalNativeBuild/cmake/debug/armeabi --target native-lib}
    
  [1/2] Building CXX object CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o
    
  [2/2] Linking CXX shared library ../../../../build/intermediates/cmake/debug/obj/armeabi/libnative-lib.so
    
  FAILED: : &amp;&amp; /home/tito/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++  -target armv5te-none-linux-androideabi -gcc-toolchain /home/tito/Android/Sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64 --sysroot=/home/tito/Android/Sdk/ndk-bundle/platforms/android-19/arch-arm -fPIC -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -march=armv5te -mtune=xscale -msoft-float -fno-integrated-as -mthumb -Wa,--noexecstack -Wformat -Werror=format-security -fno-exceptions -fno-rtti -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -march=armv5te -mtune=xscale -msoft-float -fno-integrated-as -mthumb -Wa,--noexecstack -Wformat -Werror=format-security -fno-exceptions -fno-rtti -frtti -fexceptions -O0 -fno-limit-debug-info -O0 -fno-limit-debug-info  -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -shared -Wl,-soname,libnative-lib.so -o ../../../../build/intermediates/cmake/debug/obj/armeabi/libnative-lib.so CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o  /home/tito/Android/Sdk/ndk-bundle/platforms/android-19/arch-arm/usr/lib/liblog.so ../../../../src/main/jniLibs/armeabi/libavutil-55.so ../../../../src/main/jniLibs/armeabi/libswscale-4.so ../../../../src/main/jniLibs/armeabi/libswresample-2.so ../../../../src/main/jniLibs/armeabi/libavcodec-57.so ../../../../src/main/jniLibs/armeabi/libavfilter-6.so ../../../../src/main/jniLibs/armeabi/libavformat-57.so ../../../../src/main/jniLibs/armeabi/libavdevice-57.so -lm "/home/tito/Android/Sdk/ndk-bundle/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi/libgnustl_static.a" "-latomic" &amp;&amp; :
    
  /home/tito/AndroidStudioProjects/JNItest/app/src/main/cpp/native-lib.cpp:18: error: undefined reference to 'av_init_packet(AVPacket*)'
    
  clang++: error: linker command failed with exit code 1 (use -v to see invocation)
    
  ninja: build stopped: subcommand failed.
    

    

    
* Try:
    
Run with --info or --debug option to get more log output.
    

    
* Exception is:
    
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:externalNativeBuildDebug'.
    
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:69)
    
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)
    
    at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)
    
    at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:66)
    
    at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
    
    at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:52)
    
    at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
    
    at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)
    
    at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
    
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:203)
    
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:185)
    
    at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:66)
    
    at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:50)
    
    at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:25)
    
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:110)
    
    at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:37)
    
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
    
    at org.gradle.execution.DefaultBuildExecuter.access$000(DefaultBuildExecuter.java:23)
    
    at org.gradle.execution.DefaultBuildExecuter$1.proceed(DefaultBuildExecuter.java:43)
    
    at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
    
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
    
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:30)
    
    at org.gradle.initialization.DefaultGradleLauncher$4.run(DefaultGradleLauncher.java:153)
    
    at org.gradle.internal.Factories$1.create(Factories.java:22)
    
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:91)
    
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:53)
    
    at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:150)
    
    at org.gradle.initialization.DefaultGradleLauncher.access$200(DefaultGradleLauncher.java:32)
    
    at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:98)
    
    at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:92)
    
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:91)
    
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:63)
    
    at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:92)
    
    at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:83)
    
    at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:99)
    
    at org.gradle.tooling.internal.provider.runner.BuildModelActionRunner.run(BuildModelActionRunner.java:46)
    
    at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
    
    at org.gradle.tooling.internal.provider.runner.SubscribableBuildActionRunner.run(SubscribableBuildActionRunner.java:58)
    
    at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
    
    at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:48)
    
    at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:30)
    
    at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:81)
    
    at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:46)
    
    at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:52)
    
    at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
    
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    
    at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:37)
    
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    
    at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:26)
    
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    
    at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:34)
    
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    
    at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:74)
    
    at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:72)
    
    at org.gradle.util.Swapper.swap(Swapper.java:38)
    
    at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:72)
    
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    
    at org.gradle.launcher.daemon.server.health.DaemonHealthTracker.execute(DaemonHealthTracker.java:47)
    
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    
    at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:60)
    
    at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
    
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    
    at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:72)
    
    at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
    
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    
    at org.gradle.launcher.daemon.server.health.HintGCAfterBuild.execute(HintGCAfterBuild.java:41)
    
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    
    at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:50)
    
    at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:237)
    
    at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:54)
    
    at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:40)
    
Caused by: org.gradle.internal.UncheckedException: Build command failed.
    
Error while executing '/home/tito/Android/Sdk/cmake/3.6.3155560/bin/cmake' with arguments {--build /home/tito/AndroidStudioProjects/JNItest/app/.externalNativeBuild/cmake/debug/armeabi --target native-lib}
    
[1/2] Building CXX object CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o
    
[2/2] Linking CXX shared library ../../../../build/intermediates/cmake/debug/obj/armeabi/libnative-lib.so
    
FAILED: : &amp;&amp; /home/tito/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++  -target armv5te-none-linux-androideabi -gcc-toolchain /home/tito/Android/Sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64 --sysroot=/home/tito/Android/Sdk/ndk-bundle/platforms/android-19/arch-arm -fPIC -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -march=armv5te -mtune=xscale -msoft-float -fno-integrated-as -mthumb -Wa,--noexecstack -Wformat -Werror=format-security -fno-exceptions -fno-rtti -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -march=armv5te -mtune=xscale -msoft-float -fno-integrated-as -mthumb -Wa,--noexecstack -Wformat -Werror=format-security -fno-exceptions -fno-rtti -frtti -fexceptions -O0 -fno-limit-debug-info -O0 -fno-limit-debug-info  -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -shared -Wl,-soname,libnative-lib.so -o ../../../../build/intermediates/cmake/debug/obj/armeabi/libnative-lib.so CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o  /home/tito/Android/Sdk/ndk-bundle/platforms/android-19/arch-arm/usr/lib/liblog.so ../../../../src/main/jniLibs/armeabi/libavutil-55.so ../../../../src/main/jniLibs/armeabi/libswscale-4.so ../../../../src/main/jniLibs/armeabi/libswresample-2.so ../../../../src/main/jniLibs/armeabi/libavcodec-57.so ../../../../src/main/jniLibs/armeabi/libavfilter-6.so ../../../../src/main/jniLibs/armeabi/libavformat-57.so ../../../../src/main/jniLibs/armeabi/libavdevice-57.so -lm "/home/tito/Android/Sdk/ndk-bundle/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi/libgnustl_static.a" "-latomic" &amp;&amp; :
    
/home/tito/AndroidStudioProjects/JNItest/app/src/main/cpp/native-lib.cpp:18: error: undefined reference to 'av_init_packet(AVPacket*)'
    
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
    
ninja: build stopped: subcommand failed.
    

    
    at org.gradle.internal.UncheckedException.throwAsUncheckedException(UncheckedException.java:45)
    
    at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:78)
    
    at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.doExecute(AnnotationProcessingTaskFactory.java:228)
    
    at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:221)
    
    at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:210)
    
    at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:621)
    
    at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:604)
    
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)
    
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)
    
    ... 70 more
    
Caused by: Build command failed.
    
Error while executing '/home/tito/Android/Sdk/cmake/3.6.3155560/bin/cmake' with arguments {--build /home/tito/AndroidStudioProjects/JNItest/app/.externalNativeBuild/cmake/debug/armeabi --target native-lib}
    
[1/2] Building CXX object CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o
    
[2/2] Linking CXX shared library ../../../../build/intermediates/cmake/debug/obj/armeabi/libnative-lib.so
    
FAILED: : &amp;&amp; /home/tito/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++  -target armv5te-none-linux-androideabi -gcc-toolchain /home/tito/Android/Sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64 --sysroot=/home/tito/Android/Sdk/ndk-bundle/platforms/android-19/arch-arm -fPIC -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -march=armv5te -mtune=xscale -msoft-float -fno-integrated-as -mthumb -Wa,--noexecstack -Wformat -Werror=format-security -fno-exceptions -fno-rtti -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -march=armv5te -mtune=xscale -msoft-float -fno-integrated-as -mthumb -Wa,--noexecstack -Wformat -Werror=format-security -fno-exceptions -fno-rtti -frtti -fexceptions -O0 -fno-limit-debug-info -O0 -fno-limit-debug-info  -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -shared -Wl,-soname,libnative-lib.so -o ../../../../build/intermediates/cmake/debug/obj/armeabi/libnative-lib.so CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o  /home/tito/Android/Sdk/ndk-bundle/platforms/android-19/arch-arm/usr/lib/liblog.so ../../../../src/main/jniLibs/armeabi/libavutil-55.so ../../../../src/main/jniLibs/armeabi/libswscale-4.so ../../../../src/main/jniLibs/armeabi/libswresample-2.so ../../../../src/main/jniLibs/armeabi/libavcodec-57.so ../../../../src/main/jniLibs/armeabi/libavfilter-6.so ../../../../src/main/jniLibs/armeabi/libavformat-57.so ../../../../src/main/jniLibs/armeabi/libavdevice-57.so -lm "/home/tito/Android/Sdk/ndk-bundle/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi/libgnustl_static.a" "-latomic" &amp;&amp; :
    
/home/tito/AndroidStudioProjects/JNItest/app/src/main/cpp/native-lib.cpp:18: error: undefined reference to 'av_init_packet(AVPacket*)'
    
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
    
ninja: build stopped: subcommand failed.
    

    
    at com.android.build.gradle.tasks.ExternalNativeBuildTaskUtils.executeBuildProcessAndLogError(ExternalNativeBuildTaskUtils.java:233)
    
    at com.android.build.gradle.tasks.ExternalNativeBuildTask.executeProcessBatch(ExternalNativeBuildTask.java:231)
    
    at com.android.build.gradle.tasks.ExternalNativeBuildTask.build(ExternalNativeBuildTask.java:163)
    
    at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:75)
    
    ... 77 more
    

    

    
BUILD FAILED
    

    
Total time: 0.723 secs

    Can anyone tell me what I’m doing wrong here ?

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