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• How to override memory access functions (malloc, realloc etc) in libavformat with my own custom functions

  17 août 2020, par java_geek

  I am using libavformat-dev package to get some media file properties like bitrate, duration etc. However, I want to use my custom malloc, calloc, realloc functions in place of the system functions that libavformat uses. Is there a way of registering my custom functions in libavformat ?

  


• Didn't find class "org.bytedeco.javacpp.avutil" in JAVACV version 1.2 on Android

  26 juillet 2016, par Eloy Palao

  I read a lot of answers but i can’t resolve my bug. The error is :

  java.lang.NoClassDefFoundError: java.lang.ClassNotFoundException: org.bytedeco.javacpp.avutil
  
                                                                         at org.bytedeco.javacpp.Loader.load(Loader.java:469)
  
                                                                         at org.bytedeco.javacpp.Loader.load(Loader.java:409)
  
                                                                         at org.bytedeco.javacpp.avcodec$AVPacket.<clinit>(avcodec.java:1559)
  
                                                                         at org.bytedeco.javacv.FFmpegFrameRecorder.<init>(FFmpegFrameRecorder.java:149)
  
                                                                         at org.bytedeco.javacv.FFmpegFrameRecorder.<init>(FFmpegFrameRecorder.java:126)
  
  </init></init></clinit>

  To configure JAVACV, I only put some lines in the gradle, but i don’t know if i have to do something more to configure it. I read about jniLibs folder, but this grade lines do not generate any folders. Also I read about compileSDKVersion 22 but I did it and do not resolve the problem.

  Please I need help, because I read a lot of post and bugs but any of them resolve me the problem.

      apply plugin: 'com.android.application'
  
  
  
  android {
  
      compileSdkVersion 23
  
      buildToolsVersion '23.0.3'
  
  
  
      defaultConfig {
  
          applicationId "com.eloyfranapps.daym"
  
          minSdkVersion 15
  
          targetSdkVersion 23
  
          versionCode 1
  
          versionName "1.0"
  
      }
  
      buildTypes {
  
          release {
  
              minifyEnabled false
  
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
  
          }
  
      }
  
  
  
      packagingOptions {
  
          exclude 'META-INF/maven/org.bytedeco.javacpp-presets/opencv/pom.properties'
  
          exclude 'META-INF/maven/org.bytedeco.javacpp-presets/opencv/pom.xml'
  
          exclude 'META-INF/maven/org.bytedeco.javacpp-presets/ffmpeg/pom.properties'
  
          exclude 'META-INF/maven/org.bytedeco.javacpp-presets/ffmpeg/pom.xml'
  
      }
  
  }
  
  
  
  configurations {
  
      all*.exclude group: 'org.bytedeco', module: 'javacpp-presets'
  
  }
  
  
  
  dependencies {
  
      compile fileTree(include: ['*.jar'], dir: 'libs')
  
      testCompile 'junit:junit:4.12'
  
      compile 'com.android.support:appcompat-v7:23.0.0'
  
      compile 'com.android.support:design:23.0.0'
  
      compile 'it.neokree:MaterialTabs:0.11'
  
      compile group: 'org.bytedeco', name: 'javacv', version: '1.2'
  
      compile group: 'org.bytedeco.javacpp-presets', name: 'opencv', version: '3.1.0-1.2', classifier: 'android-arm'
  
      compile group: 'org.bytedeco.javacpp-presets', name: 'opencv', version: '3.1.0-1.2', classifier: 'android-x86'
  
      compile group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '3.0.2-1.2', classifier: 'android-arm'
  
      compile group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '3.0.2-1.2', classifier: 'android-x86'
  
  }

  and the error is in the first line "new FFmpegFrameRecorder(outputPath, 1080, 1080) ;" of my code :

  FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(outputPath, 1080, 1080);
  
  
  
              recorder.setVideoQuality(12.5);
  
              recorder.setVideoCodec(13);
  
              recorder.setFormat("mp4");
  
              recorder.setFrameRate(fps);
  
              recorder.start();
  
              AndroidFrameConverter an = new AndroidFrameConverter();
  
              for (int i = 0; i < charFrames.size(); i++) {
  
                  Frame frame = an.convert(charFrames.get(i));
  
                  recorder.record(frame);
  
              }
  
              recorder.stop();

• Merge commit ’a8164323374e86ce5f93759230868c98356833a2’

  28 septembre 2016, par James Almer

  Merge commit ’a8164323374e86ce5f93759230868c98356833a2’
  * commit ’a8164323374e86ce5f93759230868c98356833a2’ :
  
    pixdesc : Add new SMPTE 431, 432, and 2085 color properties
  Conflicts :
  
      libavcodec/options_table.h
  
      libavcodec/version.h
  
      libavutil/pixdesc.c
  
      libavutil/pixfmt.h
  
      libavutil/version.h
  Merged-by : James Almer <jamrial@gmail.com>
  

  • [DH] libavcodec/options_table.h
  • [DH] libavcodec/version.h
  • [DH] libavutil/pixdesc.c
  • [DH] libavutil/pixfmt.h
  • [DH] libavutil/version.h