commit d5fa357ddff0589d8a331583a56e62712af471be
author Chong Zhang <chz@google.com> Mon Apr 09 19:03:10 2018 -0700
committer Chong Zhang <chz@google.com> Thu Apr 12 00:08:38 2018 +0000
tree 64a6fec9e99d8aee6e721d42fd5fc6b2c2b17a3f
parent 2383098d54b6503875bdf0c6b649fa66f22d79ac

Use heif embedded thumbnail if available

Add plumbing to retieve the embedded thumbnail from
MPEG4Extractor/ItemTable.

bug: 74395267
Test: CTS MediaMetadataRetriever test; manual test of thumbnail
extraction by browsing new folders containing heif files in
Downloads app.
Change-Id: Ic49f6dfa47eddc229b9f4b0e1835d58df1dce9f8

media/libmedia/mediametadataretriever.cpp

diff --git a/media/libmedia/mediametadataretriever.cpp b/media/libmedia/mediametadataretriever.cpp
index 6a4204b..c10a907 100644
--- a/media/libmedia/mediametadataretriever.cpp
+++ b/media/libmedia/mediametadataretriever.cpp
@@ -155,15 +155,15 @@
 }
 
 sp<IMemory> MediaMetadataRetriever::getImageAtIndex(
-        int index, int colorFormat, bool metaOnly) {
-    ALOGV("getImageAtIndex: index(%d) colorFormat(%d) metaOnly(%d)",
-            index, colorFormat, metaOnly);
+        int index, int colorFormat, bool metaOnly, bool thumbnail) {
+    ALOGV("getImageAtIndex: index(%d) colorFormat(%d) metaOnly(%d) thumbnail(%d)",
+            index, colorFormat, metaOnly, thumbnail);
     Mutex::Autolock _l(mLock);
     if (mRetriever == 0) {
         ALOGE("retriever is not initialized");
         return NULL;
     }
-    return mRetriever->getImageAtIndex(index, colorFormat, metaOnly);
+    return mRetriever->getImageAtIndex(index, colorFormat, metaOnly, thumbnail);
 }
 
 status_t MediaMetadataRetriever::getFrameAtIndex(