MediaSource: use shared memory for transferring larger buffers

For small buffers we still copy the data as part of the binder transaction,
since that saves one extra binder call, but for buffers > 64KB we now use
shared memory.

Change-Id: I19aad7ea7f6104991b9b6b4f24ea880b54f739be
diff --git a/media/libmedia/IMediaExtractor.cpp b/media/libmedia/IMediaExtractor.cpp
index 85362fd..76d5648 100644
--- a/media/libmedia/IMediaExtractor.cpp
+++ b/media/libmedia/IMediaExtractor.cpp
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-#define LOG_NDEBUG 0
+//#define LOG_NDEBUG 0
 #define LOG_TAG "BpMediaExtractor"
 #include <utils/Log.h>