commit 5a81ad893eada20c32596be53dabe203b99bec3c
author James Dong <jdong@google.com> Tue Jul 31 14:41:35 2012 -0700
committer James Dong <jdong@google.com> Tue Jul 31 14:46:38 2012 -0700
tree f499f67ddf2abb203f952c84c83f8d9cb017c415
parent 25f0d7ba1987de61c75f8c68b19de48e0ad9736c

Allows MediaMetadataRetriever to retrieve video rotation angle

o related-to-bug: 6872687

Change-Id: I34e74b0756f8269edefdf3a25d8806c76fd1e2f8

include/media/mediametadataretriever.h

diff --git a/include/media/mediametadataretriever.h b/include/media/mediametadataretriever.h
index 534afce..0df77c1 100644
--- a/include/media/mediametadataretriever.h
+++ b/include/media/mediametadataretriever.h
@@ -55,6 +55,7 @@
     METADATA_KEY_TIMED_TEXT_LANGUAGES      = 21,
     METADATA_KEY_IS_DRM          = 22,
     METADATA_KEY_LOCATION        = 23,
+    METADATA_KEY_VIDEO_ROTATION  = 24,
 
     // Add more here...
 };

media/libstagefright/StagefrightMetadataRetriever.cpp

diff --git a/media/libstagefright/StagefrightMetadataRetriever.cpp b/media/libstagefright/StagefrightMetadataRetriever.cpp
index 7951496..c9ef4d9 100644
--- a/media/libstagefright/StagefrightMetadataRetriever.cpp
+++ b/media/libstagefright/StagefrightMetadataRetriever.cpp
@@ -462,6 +462,7 @@
     int32_t videoWidth = -1;
     int32_t videoHeight = -1;
     int32_t audioBitrate = -1;
+    int32_t rotationAngle = -1;
 
     // The overall duration is the duration of the longest track.
     int64_t maxDurationUs = 0;
@@ -489,6 +490,9 @@
 
                 CHECK(trackMeta->findInt32(kKeyWidth, &videoWidth));
                 CHECK(trackMeta->findInt32(kKeyHeight, &videoHeight));
+                if (!trackMeta->findInt32(kKeyRotation, &rotationAngle)) {
+                    rotationAngle = 0;
+                }
             } else if (!strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP)) {
                 const char *lang;
                 trackMeta->findCString(kKeyMediaLanguage, &lang);
@@ -521,6 +525,9 @@
 
         sprintf(tmp, "%d", videoHeight);
         mMetaData.add(METADATA_KEY_VIDEO_HEIGHT, String8(tmp));
+
+        sprintf(tmp, "%d", rotationAngle);
+        mMetaData.add(METADATA_KEY_VIDEO_ROTATION, String8(tmp));
     }
 
     if (numTracks == 1 && hasAudio && audioBitrate >= 0) {