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Autres articles (59)

  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

  • Contribute to documentation

    13 avril 2011

    Documentation is vital to the development of improved technical capabilities.
    MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
    To contribute, register to the project users’ mailing (...)

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

Sur d’autres sites (4546)

  • Revision 8b22a9d377 : Merge "Use FRAGMENT_DATA struct in pbi"

    29 janvier 2013, par Scott LaVarnway

    Merge "Use FRAGMENT_DATA struct in pbi"

  • Revision 14301116e2 : Merge "WIP : Multiple decoder instances support"

    31 janvier 2013, par Jim Bankoski

    Merge "WIP : Multiple decoder instances support"

  • I wonder why logcat says "NO SUCH A FILE OR DIRECTORY(2)"

    22 septembre 2013, par autoexebat

    I wanna play audio on Android with ffmpeg.
    But when I run this project, error has occurred

    what should I do ?

    java SIDE

    import java.io.FileNotFoundException;
    import java.io.FileOutputStream;
    import java.io.IOException;
    import android.app.Activity;
    import android.media.AudioFormat;
    import android.media.AudioManager;
    import android.media.AudioTrack;
    import android.media.MediaPlayer;
    import android.os.Bundle;
    import android.os.SystemClock;

    public class FFmpegBasic extends Activity
    {
       private AudioTrack track;
       private FileOutputStream os;
       /** Called when the activity is first created. */
       @Override
       public void onCreate(Bundle savedInstanceState)
       {
           super.onCreate(savedInstanceState);
           setContentView(R.layout.main);
           createEngine();

           int bufSize = AudioTrack.getMinBufferSize(44100,
                                                     AudioFormat.CHANNEL_CONFIGURATION_STEREO,
                                                     AudioFormat.ENCODING_PCM_16BIT);


           track = new AudioTrack(AudioManager.STREAM_MUSIC,
                                  44100,
                                  AudioFormat.CHANNEL_CONFIGURATION_STEREO,
                                  AudioFormat.ENCODING_PCM_16BIT,
                                  bufSize,
                                  AudioTrack.MODE_STREAM);

           byte[] bytes = new byte[bufSize];

           try {
               os = new FileOutputStream("/sdcard/a.out",false);
           } catch (FileNotFoundException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
           }

           String result = "/mnt/sdcard/Wildlife.mp3";
           loadFile(result,bytes);

           try {
               os.close();
           } catch (IOException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
           }
       }

       void playSound(byte[] buf, int size) {  
           if(track.getPlayState()!=AudioTrack.PLAYSTATE_PLAYING)
               track.play();
           track.write(buf, 0, size);

           try {
               os.write(buf,0,size);
           } catch (IOException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
           }
       }


       private native void createEngine();
       private native void loadFile(String file, byte[] array);

       /** Load jni .so on initialization*/
       static {
            System.loadLibrary("avutil");
            System.loadLibrary("avcore");
            System.loadLibrary("avcodec");
            System.loadLibrary("avformat");
            System.loadLibrary("avdevice");
            System.loadLibrary("swscale");
            System.loadLibrary("avfilter");
            System.loadLibrary("ffmpeg");
            System.loadLibrary("basicplayer");
       }
    }

    c SIDE


    #include
    #include
    #include
    #include <android></android>log.h>

    #include "libavcodec/avcodec.h"
    #include "libavformat/avformat.h"
    #include "avcodec.h"
    #include "avformat.h"




    void Java_net_jbong_FFmpegBasic_FFmpegBasic_createEngine(JNIEnv* env, jclass clazz)
       {
           //avcodec_init();

           av_register_all();


       }

    void Java_net_jbong_FFmpegBasic_FFmpegBasic_loadFile(JNIEnv* env, jobject obj, jstring file, jbyteArray array)
    {

       AVFormatContext *gFormatCtx = NULL;
       AVCodecContext *gAudioCodecCtx = NULL;
       AVCodec *gAudioCodec = NULL;
       int gAudioStreamIdx = -1;
       char *gAudioBuffer = NULL;
       int i, outsize = 0;
       AVPacket packet;
       const char *str;
       str = (*env)->GetStringUTFChars(env, file, NULL);
       jclass cls = (*env)->GetObjectClass(env, obj);
       jmethodID play = (*env)->GetMethodID(env, cls, "playSound", "([BI)V");

       if (gFormatCtx != NULL)
           return -1;
       if (av_open_input_file(&amp;gFormatCtx,str,NULL,0,NULL)!=0)
           return -2;
       if (av_find_stream_info(gFormatCtx) &lt; 0)
           return -3;

       for(i=0; inb_streams; i++)
       {
           if(gFormatCtx->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO)
           {
               gAudioStreamIdx = i;
               break;
           }
       }

       if (gAudioStreamIdx == -1)
           return -4;
       gAudioCodecCtx = gFormatCtx->streams[gAudioStreamIdx]->codec;
       gAudioCodec = avcodec_find_decoder(gAudioCodecCtx->codec_id);

       if (gAudioCodec == NULL)
           return -5;

       if (avcodec_open(gAudioCodecCtx, gAudioCodec)&lt;0)
           return -6;


       gAudioBuffer = (char *)av_malloc(AVCODEC_MAX_AUDIO_FRAME_SIZE *2);
       int decode = 0;

       while (av_read_frame(gFormatCtx, &amp;packet) >= 0)
       {
        if (gFormatCtx-> streams[packet.stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO)
        {
            int data_size = AVCODEC_MAX_AUDIO_FRAME_SIZE * 8;
            gAudioBuffer = (char *)av_malloc(data_size);
            int size=packet.size;
            while(size > 0)
            {
             int len = avcodec_decode_audio3(gAudioCodecCtx,
               (short *) gAudioBuffer, &amp;data_size, &amp;packet);
             if (data_size > 0)
             {
                       jbyte *bytes = (*env)->GetByteArrayElements(env, array, NULL);
                          memcpy(bytes + decode, (int16_t *)gAudioBuffer, size);
                          (*env)->ReleaseByteArrayElements(env, array, bytes, 0);
                          (*env)->CallVoidMethod(env, obj, play, array, data_size);
                          decode += size;
                          size -= len;

             }
            }
        }
        av_free_packet(&amp;packet);
       }

       av_close_input_file(gFormatCtx);
       return 0;
    }

    Why my android logcat show me this message ?
    "error opening trace file : No such file or directory (2)"