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• lavfi/split : use AVFILTER_DEFINE_CLASS to define class

  15 avril 2013, par Stefano Sabatini

  lavfi/split : use AVFILTER_DEFINE_CLASS to define class

• FFmpeg : java.lang.UnsatisfiedLinkError while calling Runnable class

  12 mars 2013, par Yuliya Tarasenko

  I need to take a picture file and an audio file and create a video.
  I know that it's possible to do with the help of

  Runtime.getRuntime().exec("ffmpeg -i image.jpeg -i audio.mp3 out.avi") 

  but only for rooted devices, so I've tried to create JNI wrapper for main() from ffmpeg.c and call it from my Activity like here : http://demo860.blogspot.com/2010/07/android-ffmpeg-dynamic-module-jni.html

  1.This code is in ffmpeg.c :

  int m_argc = 0;
  
  char *m_pargv [30];
  
  
  
  int dynamic_ffpmeg_main (int argc, char **argv);
  
  jint JNICALL Java_com_ccmedia_codec_ffmpeg_mod_1run ( JNIEnv *, jclass, jstring,     jstring );
  
  
  
  jint JNICALL Java_com_ccmedia_codec_ffmpeg_mod_1run ( JNIEnv *env, jclass class, jstring pj1, jstring pj2)
  
  {
  
      // as in http://demo860.blogspot.com/2010/07/android-ffmpeg-dynamic-module-jni.html
  
  }
  
  
  
  int dynamic_ffpmeg_main(int argc, char **argv)
  
  {
  
  // as in http://demo860.blogspot.com/2010/07/android-ffmpeg-dynamic-module-jni.html
  
  }
  
  
  
  int main(int argc, char **argv)
  
  {
  
      dynamic_ffpmeg_main ( argc, argv );
  
      return 0;
  
  }

  2.This code is in my .java :

  public class FFmpegCreator implements Runnable {
  
  
  
      static boolean m_bret = false;
  
  static String m_szconfig = " -i /sdcard/file.mpg -vcodec mpeg4 aaa.mpg";
  
  
  
  //public native String unimplementedStringFromJNI();
  
  
  
  static {
  
      try {
  
  
  
          System.out.println("[AdDBCache] Module load try ffmpeg : "
  
                  + System.getProperty("java.library.path"));
  
  
  
          // System.load("/sdcard/arm_and/bin/libffmpeg.so");
  
  
  
          System.loadLibrary("ffmpeg");
  
  
  
          System.out.println("[AdDBCache] Module load success");
  
  
  
      }
  
  
  
      catch (Exception e) {
  
  
  
          System.out.println("[AdDBCache] Module load err : "
  
                  + System.getProperty("java.library.path"));
  
  
  
      }
  
  
  
  }
  
  
  
  private static synchronized final native int Java_com_ccmedia_codec_ffmpeg_mod_1run(String name, String sztoken);
  
  
  
  public void set_config(String sz_config) {
  
  
  
      m_szconfig = sz_config;
  
  
  
  }
  
  
  
  public void run_core(String sz_file, String sz_token) {
  
  
  
      int n_stat;
  
      m_bret = false;
  
      n_stat = Java_com_ccmedia_codec_ffmpeg_mod_1run(m_szconfig, sz_token);
  
      m_bret = true;
  
  
  
  }
  
  
  
  public void run() {
  
  
  
      run_core("", "");
  
  
  
  }
  
  }

  3.And this in my Activity :

  FFmpegCreator f = new FFmpegCreator ();
  
  new Thread(f).start();

  But I have

  E/AndroidRuntime(25682): java.lang.UnsatisfiedLinkError: Java_com_ccmedia_codec_ffmpeg_mod_1run .

  And I can't understand why... FFmpeg build was successful...
  Could anyone help me, please ? I'll really appreciate if you could help me. Thank you.

• trouble compiling ffmpeg library and converter class

  24 février 2013, par user2104126

  I am using this project as a reference : The code is avaiable at http://roman10.net/src/affmpeg.zip.

  I am trying to compile this project with ffmpeg with different configuration than the project suggests.
  I've compiled a new libffmpeg.so and added it to the project.
  However, now i'm getting an "UnsatisfiedLinkError"

  02-24 11:05:45.644: D/dalvikvm(11363): Trying to load lib /data/data/roman10.media.ffmpeg/lib/libffmpeg.so 0x47b0ec70
  
  02-24 11:05:45.680: D/dalvikvm(11363): Added shared lib /data/data/roman10.media.ffmpeg/lib/libffmpeg.so 0x47b0ec70
  
  02-24 11:05:45.680: D/dalvikvm(11363): No JNI_OnLoad found in /data/data/roman10.media.ffmpeg/lib/libffmpeg.so 0x47b0ec70, skipping init
  
  02-24 11:05:45.684: D/dalvikvm(11363): Trying to load lib /data/data/roman10.media.ffmpeg/lib/libconverter.so 0x47b0ec70
  
  02-24 11:05:45.687: I/dalvikvm(11363): Unable to dlopen(/data/data/roman10.media.ffmpeg/lib/libconverter.so): Cannot load library: link_image[1995]: failed to link libconverter.so
  
  02-24 11:05:45.687: W/dalvikvm(11363): Exception Ljava/lang/UnsatisfiedLinkError; thrown during Lroman10/media/ffmpeg/ffmpegService;.<clinit>
  
  02-24 11:05:45.687: W/dalvikvm(11363): Class init failed in newInstance call (Lroman10/media/ffmpeg/ffmpegService;)
  
  02-24 11:05:45.687: D/AndroidRuntime(11363): Shutting down VM
  
  02-24 11:05:45.687: W/dalvikvm(11363): threadid=1: thread exiting with uncaught exception (group=0x4001d7d0)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363): FATAL EXCEPTION: main
  
  02-24 11:05:45.695: E/AndroidRuntime(11363): java.lang.ExceptionInInitializerError
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at java.lang.Class.newInstanceImpl(Native Method)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at java.lang.Class.newInstance(Class.java:1429)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at android.app.ActivityThread.handleCreateService(ActivityThread.java:2940)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at android.app.ActivityThread.access$3300(ActivityThread.java:125)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2087)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at android.os.Handler.dispatchMessage(Handler.java:99)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at android.os.Looper.loop(Looper.java:123)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at android.app.ActivityThread.main(ActivityThread.java:4627)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at java.lang.reflect.Method.invokeNative(Native Method)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at java.lang.reflect.Method.invoke(Method.java:521)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:871)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:629)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at dalvik.system.NativeStart.main(Native Method)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363): Caused by: java.lang.UnsatisfiedLinkError: Library converter not found
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at java.lang.Runtime.loadLibrary(Runtime.java:461)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at java.lang.System.loadLibrary(System.java:557)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at roman10.media.ffmpeg.ffmpegService.<clinit>(ffmpegService.java:123)
  
  </clinit></clinit>

  I decided to recompile the converter.so file
  however, when running the ndk-build command on it, i receive these messages :

  c:\Users\user\workspace\Main\jni>c:\work\android-ndk-r8d\ndk-build
  
  c:/android-ndk-r8d/build/core/build-binary.mk:266: warning: overriding comm
  
  ands for target `c:/Users/user/workspace/Main//obj/local/armeabi/objs/converter'
  
  
  
  c:/android-ndk-r8d/build/core/build-binary.mk:266: warning: ignoring old co
  
  mmands for target `c:/Users/user/workspace/Main//obj/local/armeabi/objs/converte
  
  r'
  
  c:/android-ndk-r8d/build/core/build-binary.mk:266: warning: overriding comm
  
  ands for target `c:/Users/user/workspace/Main//obj/local/armeabi/objs/converter'
  
  
  
  c:/android-ndk-r8d/build/core/build-binary.mk:266: warning: ignoring old co
  
  mmands for target `c:/Users/user/workspace/Main//obj/local/armeabi/objs/converte
  
  r'
  
  c:/android-ndk-r8d/build/core/build-binary.mk:357: warning: overriding comm
  
  ands for target `c:/Users/user/workspace/Main//obj/local/armeabi'
  
  c:/android-ndk-r8d/build/core/build-binary.mk:357: warning: ignoring old co
  
  mmands for target `c:/Users/user/workspace/Main//obj/local/armeabi'
  
  c:/android-ndk-r8d/build/core/build-binary.mk:439: warning: overriding comm
  
  ands for target `c:/Users/user/workspace/Main//libs/armeabi'
  
  c:/android-ndk-r8d/build/core/build-binary.mk:439: warning: ignoring old co
  
  mmands for target `c:/Users/user/workspace/Main//libs/armeabi'
  
  c:/android-ndk-r8d/build/core/build-binary.mk:357: warning: overriding comm
  
  ands for target `c:/Users/user/workspace/Main//obj/local/armeabi'
  
  c:/android-ndk-r8d/build/core/build-binary.mk:357: warning: ignoring old co
  
  mmands for target `c:/Users/user/workspace/Main//obj/local/armeabi'
  
  "Compile thumb : converter <= cmdutils.c
  
  c:/Users/user/workspace/Main//jni/cmdutils.c:32:34: fatal error: libavformat/avf
  
  ormat.h: No such file or directory
  
  compilation terminated.
  
  make: *** [c:/Users/user/workspace/Main//obj/local/armeabi/objs/converter/cmduti
  
  ls.o] Error 1

  What can I do to fix this, and make it work ?