Bug 927: Fix minor MT issues w/ libav/ffmpeg

Issue:
  [NULL @ 0x35bde60] insufficient thread locking around avcodec_open/close()

Decorating said libav functions w/ mutex lock/release.

Abstract impl. to either use pthread or JNI Monitor,
but using the latter to reduce dependencies (ming64 windows).

FFMPEGNatives is now an abstract class containing the
  'static final Object mutex_avcodec_openclose'

1 files changed, 17 insertions, 17 deletions

diff --git a/src/jogl/classes/jogamp/opengl/util/av/impl/FFMPEGv08Natives.java b/src/jogl/classes/jogamp/opengl/util/av/impl/FFMPEGv08Natives.java
index 4b013c1b3..6ca0ea311 100644
--- a/src/jogl/classes/jogamp/opengl/util/av/impl/FFMPEGv08Natives.java
+++ b/src/jogl/classes/jogamp/opengl/util/av/impl/FFMPEGv08Natives.java
@@ -27,52 +27,52 @@
  */
 package jogamp.opengl.util.av.impl;
 
-class FFMPEGv08Natives implements FFMPEGNatives {
+class FFMPEGv08Natives extends FFMPEGNatives {
     @Override
-    public native boolean initSymbols0(long[] symbols, int count);
+    native boolean initSymbols0(long[] symbols, int count);
 
     @Override
-    public native int getAvUtilMajorVersionCC0();
+    native int getAvUtilMajorVersionCC0();
 
     @Override
-    public native int getAvFormatMajorVersionCC0();
+    native int getAvFormatMajorVersionCC0();
 
     @Override
-    public native int getAvCodecMajorVersionCC0();
+    native int getAvCodecMajorVersionCC0();
 
     @Override
-    public native int getAvResampleMajorVersionCC0();
+    native int getAvResampleMajorVersionCC0();
 
     @Override
-    public native int getSwResampleMajorVersionCC0();
+    native int getSwResampleMajorVersionCC0();
 
     @Override
-    public native long createInstance0(FFMPEGMediaPlayer upstream, boolean verbose);
+    native long createInstance0(Object mutex_avcodec_openclose, FFMPEGMediaPlayer upstream, boolean verbose);
 
     @Override
-    public native void destroyInstance0(long moviePtr);
+    native void destroyInstance0(long moviePtr);
 
     @Override
-    public native void setStream0(long moviePtr, String url, boolean isCameraInput, int vid, String sizes, int vWidth, int vHeight, int vRate, int aid, int aMaxChannelCount, int aPrefSampleRate);
+    native void setStream0(long moviePtr, String url, boolean isCameraInput, int vid, String sizes, int vWidth, int vHeight, int vRate, int aid, int aMaxChannelCount, int aPrefSampleRate);
 
     @Override
-    public native void setGLFuncs0(long moviePtr, long procAddrGLTexSubImage2D, long procAddrGLGetError, long procAddrGLFlush, long procAddrGLFinish);
+    native void setGLFuncs0(long moviePtr, long procAddrGLTexSubImage2D, long procAddrGLGetError, long procAddrGLFlush, long procAddrGLFinish);
 
     @Override
-    public native int getVideoPTS0(long moviePtr);
+    native int getVideoPTS0(long moviePtr);
 
     @Override
-    public native int getAudioPTS0(long moviePtr);
+    native int getAudioPTS0(long moviePtr);
 
     @Override
-    public native int readNextPacket0(long moviePtr, int texTarget, int texFmt, int texType);
+    native int readNextPacket0(long moviePtr, int texTarget, int texFmt, int texType);
 
     @Override
-    public native int play0(long moviePtr);
+    native int play0(long moviePtr);
 
     @Override
-    public native int pause0(long moviePtr);
+    native int pause0(long moviePtr);
 
     @Override
-    public native int seek0(long moviePtr, int position);
+    native int seek0(long moviePtr, int position);
 }