From 5ec377b43038a9b705704c2b48e03c9f9587dde4 Mon Sep 17 00:00:00 2001
From: Emilian Peev <epeev@google.com>
Date: Wed, 1 May 2019 10:51:23 -0700
Subject: [PATCH] Camera: Add fall back properties for FMQ size override

All system properties in the vendor partition must
start with either "vendor" or "ro.vendor".
Older devices should not be affected but newer
implementations may not be able to override the
FMQ size if needed.
Keep this functionality and provide fall back
properties using "ro.vendor.camera".

Bug: 77865891
Test: Manual using application and modified device configuration.
Change-Id: I23d0ba7a10eaafe98a708277c26579e8a0fec614
---
 .../3.2/default/CameraDeviceSession.cpp       | 31 +++++++++++++++----
 1 file changed, 25 insertions(+), 6 deletions(-)

diff --git a/camera/device/3.2/default/CameraDeviceSession.cpp b/camera/device/3.2/default/CameraDeviceSession.cpp
index f2d7a47e83..99cdccbcdb 100644
--- a/camera/device/3.2/default/CameraDeviceSession.cpp
+++ b/camera/device/3.2/default/CameraDeviceSession.cpp
@@ -99,11 +99,20 @@ bool CameraDeviceSession::initialize() {
         return true;
     }
 
-    int32_t reqFMQSize = property_get_int32("ro.camera.req.fmq.size", /*default*/-1);
+    // "ro.camera" properties are no longer supported on vendor side.
+    //  Support a fall back for the fmq size override that uses "ro.vendor.camera"
+    //  properties.
+    int32_t reqFMQSize = property_get_int32("ro.vendor.camera.req.fmq.size", /*default*/-1);
     if (reqFMQSize < 0) {
-        reqFMQSize = CAMERA_REQUEST_METADATA_QUEUE_SIZE;
+        reqFMQSize = property_get_int32("ro.camera.req.fmq.size", /*default*/-1);
+        if (reqFMQSize < 0) {
+            reqFMQSize = CAMERA_REQUEST_METADATA_QUEUE_SIZE;
+        } else {
+            ALOGV("%s: request FMQ size overridden to %d", __FUNCTION__, reqFMQSize);
+        }
     } else {
-        ALOGV("%s: request FMQ size overridden to %d", __FUNCTION__, reqFMQSize);
+        ALOGV("%s: request FMQ size overridden to %d via fallback property", __FUNCTION__,
+                reqFMQSize);
     }
 
     mRequestMetadataQueue = std::make_unique<RequestMetadataQueue>(
@@ -114,12 +123,22 @@ bool CameraDeviceSession::initialize() {
         return true;
     }
 
-    int32_t resFMQSize = property_get_int32("ro.camera.res.fmq.size", /*default*/-1);
+    // "ro.camera" properties are no longer supported on vendor side.
+    //  Support a fall back for the fmq size override that uses "ro.vendor.camera"
+    //  properties.
+    int32_t resFMQSize = property_get_int32("ro.vendor.camera.res.fmq.size", /*default*/-1);
     if (resFMQSize < 0) {
-        resFMQSize = CAMERA_RESULT_METADATA_QUEUE_SIZE;
+        resFMQSize = property_get_int32("ro.camera.res.fmq.size", /*default*/-1);
+        if (resFMQSize < 0) {
+            resFMQSize = CAMERA_RESULT_METADATA_QUEUE_SIZE;
+        } else {
+            ALOGV("%s: result FMQ size overridden to %d", __FUNCTION__, resFMQSize);
+        }
     } else {
-        ALOGV("%s: result FMQ size overridden to %d", __FUNCTION__, resFMQSize);
+        ALOGV("%s: result FMQ size overridden to %d via fallback property", __FUNCTION__,
+                resFMQSize);
     }
+
     mResultMetadataQueue = std::make_shared<RequestMetadataQueue>(
             static_cast<size_t>(resFMQSize),
             false /* non blocking */);