From 1e70c0b9c91a6ba9e3b874badd5fc558703928bd Mon Sep 17 00:00:00 2001
From: Slawomir Rosek <srosek@google.com>
Date: Tue, 28 Mar 2023 08:21:34 +0000
Subject: [PATCH] Disable transcoding by default if no HEVC support

This patch by default disables transcoding if HEVC decoder is not
supported. It may still be enabled/disabled via persistet properties
and/or device_config settings.

Bug: 270324498
Bug: 270320827
Test: run cts -m CtsMediaProviderTranscodeTests
Test: run cts -m CtsMediaTranscodingTestCases
Change-Id: I63ac7f4dd5103bea3f67a491a3fe030bafce075c
Signed-off-by: Slawomir Rosek <srosek@google.com>
---
 .../android/server/StorageManagerService.java | 22 ++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/services/core/java/com/android/server/StorageManagerService.java b/services/core/java/com/android/server/StorageManagerService.java
index ce9c067116ef6..2daf04d1f8b9d 100644
--- a/services/core/java/com/android/server/StorageManagerService.java
+++ b/services/core/java/com/android/server/StorageManagerService.java
@@ -75,6 +75,9 @@ import android.content.pm.ProviderInfo;
 import android.content.pm.UserInfo;
 import android.content.res.ObbInfo;
 import android.database.ContentObserver;
+import android.media.MediaCodecList;
+import android.media.MediaCodecInfo;
+import android.media.MediaFormat;
 import android.net.Uri;
 import android.os.BatteryManager;
 import android.os.Binder;
@@ -1006,10 +1009,27 @@ class StorageManagerService extends IStorageManager.Stub
         }
     }
 
+    private boolean isHevcDecoderSupported() {
+        MediaCodecList codecList = new MediaCodecList(MediaCodecList.REGULAR_CODECS);
+        MediaCodecInfo[] codecInfos = codecList.getCodecInfos();
+        for (MediaCodecInfo codecInfo : codecInfos) {
+            if (codecInfo.isEncoder()) {
+                continue;
+            }
+            String[] supportedTypes = codecInfo.getSupportedTypes();
+            for (String type : supportedTypes) {
+                if (type.equalsIgnoreCase(MediaFormat.MIMETYPE_VIDEO_HEVC)) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
     private void configureTranscoding() {
         // See MediaProvider TranscodeHelper#getBooleanProperty for more information
         boolean transcodeEnabled = false;
-        boolean defaultValue = true;
+        boolean defaultValue = isHevcDecoderSupported() ? true : false;
 
         if (SystemProperties.getBoolean("persist.sys.fuse.transcode_user_control", false)) {
             transcodeEnabled = SystemProperties.getBoolean("persist.sys.fuse.transcode_enabled",