commit 1c30a5e3752f3ccbd84cdde57ae14d43ecd2c490
author Yin-Chia Yeh <yinchiayeh@google.com> Wed Nov 28 16:00:16 2018 -0800
committer Yin-Chia Yeh <yinchiayeh@google.com> Tue Jan 08 10:54:10 2019 -0800
tree 5fe2c5b57472a7d1e79b12f35dbb695f6f5f6ac2
parent 8930c48f1e62ff07e7c4c42cb5e620467afb6ef8

Camera: make external camera orientation configurable

Test: webcam preview has correct aspect ratio on phones
Bug: 115774657
Change-Id: I8dcb1a55c4d63c9080f44b85e87d97c138bc5243

camera/device/3.4/default/ExternalCameraDevice.cpp

diff --git a/camera/device/3.4/default/ExternalCameraDevice.cpp b/camera/device/3.4/default/ExternalCameraDevice.cpp
index b96f574..0f23657 100644
--- a/camera/device/3.4/default/ExternalCameraDevice.cpp
+++ b/camera/device/3.4/default/ExternalCameraDevice.cpp
@@ -378,8 +378,12 @@
     const uint8_t timestampSource = ANDROID_SENSOR_INFO_TIMESTAMP_SOURCE_UNKNOWN;
     UPDATE(ANDROID_SENSOR_INFO_TIMESTAMP_SOURCE, &timestampSource, 1);
 
-    // Orientation probably isn't useful for external facing camera?
-    const int32_t orientation = 0;
+    // Orientation is a bit odd for external camera, but consider it as the orientation
+    // between the external camera sensor (which is usually landscape) and the device's
+    // natural display orientation. For devices with natural landscape display (ex: tablet/TV), the
+    // orientation should be 0. For devices with natural portrait display (phone), the orientation
+    // should be 270.
+    const int32_t orientation = mCfg.orientation;
     UPDATE(ANDROID_SENSOR_ORIENTATION, &orientation, 1);
 
     // android.shading

camera/device/3.4/default/ExternalCameraUtils.cpp

diff --git a/camera/device/3.4/default/ExternalCameraUtils.cpp b/camera/device/3.4/default/ExternalCameraUtils.cpp
index 680c95a..0941052 100644
--- a/camera/device/3.4/default/ExternalCameraUtils.cpp
+++ b/camera/device/3.4/default/ExternalCameraUtils.cpp
@@ -160,9 +160,11 @@
 namespace common {
 
 namespace {
-    const int  kDefaultJpegBufSize = 5 << 20; // 5MB
-    const int  kDefaultNumVideoBuffer = 4;
-    const int  kDefaultNumStillBuffer = 2;
+    const int kDefaultJpegBufSize = 5 << 20; // 5MB
+    const int kDefaultNumVideoBuffer = 4;
+    const int kDefaultNumStillBuffer = 2;
+    const int kDefaultOrientation = 0; // suitable for natural landscape displays like tablet/TV
+                                       // For phone devices 270 is better
 } // anonymous namespace
 
 const char* ExternalCameraConfig::kDefaultCfgPath = "/vendor/etc/external_camera_config.xml";
@@ -276,10 +278,17 @@
                 minStreamSize->UnsignedAttribute("height", /*Default*/0)};
     }
 
+    XMLElement *orientation = deviceCfg->FirstChildElement("Orientation");
+    if (orientation == nullptr) {
+        ALOGI("%s: no sensor orientation specified", __FUNCTION__);
+    } else {
+        ret.orientation = orientation->IntAttribute("degree", /*Default*/kDefaultOrientation);
+    }
+
     ALOGI("%s: external camera cfg loaded: maxJpgBufSize %d,"
-            " num video buffers %d, num still buffers %d",
+            " num video buffers %d, num still buffers %d, orientation %d",
             __FUNCTION__, ret.maxJpegBufSize,
-            ret.numVideoBuffers, ret.numStillBuffers);
+            ret.numVideoBuffers, ret.numStillBuffers, ret.orientation);
     for (const auto& limit : ret.fpsLimits) {
         ALOGI("%s: fpsLimitList: %dx%d@%f", __FUNCTION__,
                 limit.size.width, limit.size.height, limit.fpsUpperBound);
@@ -292,7 +301,8 @@
 ExternalCameraConfig::ExternalCameraConfig() :
         maxJpegBufSize(kDefaultJpegBufSize),
         numVideoBuffers(kDefaultNumVideoBuffer),
-        numStillBuffers(kDefaultNumStillBuffer) {
+        numStillBuffers(kDefaultNumStillBuffer),
+        orientation(kDefaultOrientation) {
     fpsLimits.push_back({/*Size*/{ 640,  480}, /*FPS upper bound*/30.0});
     fpsLimits.push_back({/*Size*/{1280,  720}, /*FPS upper bound*/7.5});
     fpsLimits.push_back({/*Size*/{1920, 1080}, /*FPS upper bound*/5.0});

camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraUtils.h

diff --git a/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraUtils.h b/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraUtils.h
index 5754ccb..3b1ac96 100644
--- a/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraUtils.h
+++ b/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraUtils.h
@@ -80,6 +80,9 @@
     // Minimum output stream size
     Size minStreamSize;
 
+    // The value of android.sensor.orientation
+    int32_t orientation;
+
 private:
     ExternalCameraConfig();
 };