vlc android的编译及截图,录制视频等功能

编译的环境是ubuntu 12.04,要安装好java,配置好环境变量,按照http://wiki.videolan.org/AndroidCompile配置好,就可以编译了。

export JAVA_HOME=/home/sunlit/jdk1.6.0_38/
export PATH=$JAVA_HOME/bin:$PATH
export classPath=/home/sunlit/jdk1.6.0_38/
export ANDROID_SDK=/home/sunlit/sdk
export ANDROID_NDK=/home/sunlit/android-ndk-r8c
export PATH=$PATH:$ANDROID_SDK/platform-tools:$ANDROID_SDK/tools
export ANDROID_ABI=armeabi-v7a


2014/03/26日更新开始


在ubuntu下编译vlc  https://wiki.videolan.org/AndroidCompile/
     安装工具
          sudo apt-get install ant autoconf automake autopoint cmake gawk gcc g++ libtool m4 patch pkg-config ragel subversion yasm git
     切换vlc android 版本到 0.1.x-bugfix
           git clone   git://git.videolan.org/vlc-ports/android.git
           cd android
           git branch -r
           git checkout 0.1.x-bugfix


2014/03/26日更新结束


为了在android vlc上增加截图和保存视频的功能

截图:

要对android/configure.sh进行修改 删掉其中的-disable-sout

另外保存图片为png格式,需要让ffmpeg增加-enable-encoder=png的编码器(在android/vlc/contrib/src/ffmpeg/rules.mak中修改)


2014/03/26日更新开始

 FFMPEGCONF += --disable-encoders --disable-muxers

               ->FFMPEGCONF += --disable-encoders --enable-encoder=png

2014/03/26日更新结束


在libvlcjni.c中增加函数:

jboolean Java_org_videolan_libvlc_LibVLC_takeSnapShot(JNIEnv *env, jobject thiz,jint number, jstring path, jint width,jint height)
{
    jboolean isCopy;
   libvlc_media_player_t *mp = getMediaPlayer(env, thiz);
     /* Get C string */
   const char* psz_path = (*env)->GetStringUTFChars(env, path, &isCopy);

   if (mp)
        if(libvlc_video_take_snapshot(mp, (int)number,psz_path , (int)width,(int)height)==0)
            return JNI_TRUE;
   return JNI_FALSE;

}


在LibVlc.java中增加native函数的接口

    private native boolean takeSnapShot( int num, String file, int width, int height);
和调用方法

    public boolean takeSnapShot(String file, int width, int height) {
        return takeSnapShot(0, file, width, height);
    }


编译后就可以使用。调用LibVlc.java中的takeSnapShot就可以实现截图了。

录制视频:

2014/03/26日更新开始

  • 打上视频录制的补丁 https://patches.videolan.org/patch/606/
    • 把patch文件放到/android/vlc中 使用命令patch -p1 < xxxx.patch  查出其中的失败的地方 手动修改
  • 修改vlc-android/jni/libvlcjni.c
    在文件末尾添加
  • jboolean Java_org_videolan_libvlc_LibVLC_takeSnapShot(JNIEnv *env, jobject thiz,jint number, jstring path, jint width,jint height)
    {
        jboolean isCopy;
       libvlc_media_player_t *mp = getMediaPlayer(env, thiz);
         /* Get C string */
       const char* psz_path = (*env)->GetStringUTFChars(env, path, &isCopy);
    
       if (mp)
            if(libvlc_video_take_snapshot(mp, (int)number,psz_path , (int)width,(int)height)==0)
                return JNI_TRUE;
       return JNI_FALSE;
    
    }
    
    jboolean Java_org_videolan_libvlc_LibVLC_videoRecordStart(JNIEnv *env, jobject thiz,jstring path)
    {
        jboolean isCopy;
       libvlc_media_player_t *mp = getMediaPlayer(env, thiz);
         /* Get C string */
       const char* psz_path = (*env)->GetStringUTFChars(env, path, &isCopy);
       //const char* psz_filename=(*env)->GetStringUTFChars(env, filename, &isCopy);
       if (mp)
            if(libvlc_media_player_record_start(mp,psz_path)==0)
                return JNI_TRUE;
       return JNI_FALSE;
    }
    
    jboolean Java_org_videolan_libvlc_LibVLC_videoRecordStop(JNIEnv *env, jobject thiz)
    {
        jboolean isCopy;
       libvlc_media_player_t *mp = getMediaPlayer(env, thiz);
         /* Get C string */
       if (mp)
            if(libvlc_media_player_record_stop(mp)==0)
                return JNI_TRUE;
       return JNI_FALSE;
    }
    
    jboolean Java_org_videolan_libvlc_LibVLC_videoIsRecording(JNIEnv *env, jobject thiz)
    {
        jboolean isCopy;
       libvlc_media_player_t *mp = getMediaPlayer(env, thiz);
       if (mp)
            if(libvlc_media_player_is_recording(mp))
                return JNI_TRUE;
       return JNI_FALSE;
    }
    jboolean Java_org_videolan_libvlc_LibVLC_videoIsRecordable(JNIEnv *env, jobject thiz)
    {
        jboolean isCopy;
       libvlc_media_player_t *mp = getMediaPlayer(env, thiz);
       if (mp)
            if(libvlc_media_player_is_recordable(mp))
                return JNI_TRUE;
       return JNI_FALSE;
    }
    
    jint Java_org_videolan_libvlc_LibVLC_getState(JNIEnv *env, jobject thiz)
    {
        libvlc_media_player_t *mp = getMediaPlayer(env, thiz);
        if (mp){
            libvlc_state_t state=libvlc_media_player_get_state(mp);
            return (jint)state;
        }
        else
            return -1;
    }
    


2014/03/26日更新结束


送佛送到西 源码下载地址http://pan.baidu.com/s/17Y4dO

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