Remove libmedia and libstagefright dependency from extractors

- MediaSource, DataSource and MediaExtractor are moved to
  libmediaextractor so that they can be used by extractor
  implementations without depending on libmedia and libstagefright.
- XXXFactory classes has been added in order not to expose CreateXXX
  methods in libmediaextractor.
- avc_utils is moved to libstagefright_foundation since most of
  extractor implementations are relying on that.

Test: build + post submit media CTS tests
Bug: 65851881
Change-Id: I7d5cf18dd25abc10478ac3f6e7d1828ad023e3fb
diff --git a/media/extractors/wav/Android.bp b/media/extractors/wav/Android.bp
index e6dadd1..f310892 100644
--- a/media/extractors/wav/Android.bp
+++ b/media/extractors/wav/Android.bp
@@ -8,8 +8,7 @@
 
     shared_libs: [
         "liblog",
-        "libmedia",
-        "libstagefright",
+        "libmediaextractor",
         "libstagefright_foundation",
         "libutils",
     ],
diff --git a/media/extractors/wav/WAVExtractor.cpp b/media/extractors/wav/WAVExtractor.cpp
index cce488b..6c5f893 100644
--- a/media/extractors/wav/WAVExtractor.cpp
+++ b/media/extractors/wav/WAVExtractor.cpp
@@ -21,12 +21,12 @@
 #include "WAVExtractor.h"
 
 #include <audio_utils/primitives.h>
+#include <media/DataSource.h>
+#include <media/MediaSource.h>
 #include <media/stagefright/foundation/ADebug.h>
-#include <media/stagefright/DataSource.h>
 #include <media/stagefright/MediaBufferGroup.h>
 #include <media/stagefright/MediaDefs.h>
 #include <media/stagefright/MediaErrors.h>
-#include <media/stagefright/MediaSource.h>
 #include <media/stagefright/MetaData.h>
 #include <utils/String8.h>
 #include <cutils/bitops.h>
diff --git a/media/extractors/wav/WAVExtractor.h b/media/extractors/wav/WAVExtractor.h
index 9fe0335..98a2dfa 100644
--- a/media/extractors/wav/WAVExtractor.h
+++ b/media/extractors/wav/WAVExtractor.h
@@ -19,7 +19,7 @@
 #define WAV_EXTRACTOR_H_
 
 #include <utils/Errors.h>
-#include <media/stagefright/MediaExtractor.h>
+#include <media/MediaExtractor.h>
 
 namespace android {