From 522c9cceeb130974a0621e7c5ce794ff046b5412 Mon Sep 17 00:00:00 2001
From: Ziyan <jaraidaniel@gmail.com>
Date: Sat, 6 Feb 2016 14:10:14 +0100
Subject: camera: update default zoom in video mode to workaround pink lines

Change-Id: Ie1001438fb90b8f6a3991a14e0f11968eb2d1ac9
---
 camera/OMXCameraAdapter/OMXCameraAdapter.cpp   |  2 ++
 camera/OMXCameraAdapter/OMXZoom.cpp            | 39 ++++++++++++++++++++++++--
 camera/inc/OMXCameraAdapter/OMXCameraAdapter.h |  7 +++--
 3 files changed, 43 insertions(+), 5 deletions(-)

diff --git a/camera/OMXCameraAdapter/OMXCameraAdapter.cpp b/camera/OMXCameraAdapter/OMXCameraAdapter.cpp
index 9b8064b..00d57a2 100644
--- a/camera/OMXCameraAdapter/OMXCameraAdapter.cpp
+++ b/camera/OMXCameraAdapter/OMXCameraAdapter.cpp
@@ -247,6 +247,7 @@ status_t OMXCameraAdapter::initialize(CameraProperties::Properties* caps)
     mCapabilities = caps;
     mZoomUpdating = false;
     mZoomUpdate = false;
+    mPrevZoomModeIsVideo = false;
     mGBCE = BRIGHTNESS_OFF;
     mGLBCE = BRIGHTNESS_OFF;
     mParameters3A.ExposureLock = OMX_FALSE;
@@ -4149,6 +4150,7 @@ OMXCameraAdapter::OMXCameraAdapter(size_t sensor_index)
     mOmxInitialized = false;
     mComponentState = OMX_StateInvalid;
     mSensorIndex = sensor_index;
+    mPrevZoomSensorIndex = sensor_index;
     mPictureRotation = 0;
     // Initial values
     mTimeSourceDelta = 0;
diff --git a/camera/OMXCameraAdapter/OMXZoom.cpp b/camera/OMXCameraAdapter/OMXZoom.cpp
index e39a3b0..af5c5db 100644
--- a/camera/OMXCameraAdapter/OMXZoom.cpp
+++ b/camera/OMXCameraAdapter/OMXZoom.cpp
@@ -24,6 +24,15 @@
 #include "CameraHal.h"
 #include "OMXCameraAdapter.h"
 
+#ifdef CAMERAHAL_TUNA
+namespace {
+    // Experimentally determined values that make
+    // overlapping bands go away in video mode.
+    const int32_t FrontSensorVideoMinZoom = 66816; // 65536 + 1280
+    const int32_t BackSensorVideoMinZoom = 66304; // 65536 + 768
+}
+#endif
+
 namespace Ti {
 namespace Camera {
 
@@ -45,6 +54,18 @@ const int32_t OMXCameraAdapter::ZOOM_STEPS [ZOOM_STAGES] =  {
                                 456131, 472515, 488899, 506593,
                                 524288 };
 
+#ifdef CAMERAHAL_TUNA
+int32_t OMXCameraAdapter::getZoomStep(int index)
+{
+    if (index != 0 || !mPrevZoomModeIsVideo) {
+        return OMXCameraAdapter::ZOOM_STEPS[index];
+    } else if (mSensorIndex == 1) {
+        return FrontSensorVideoMinZoom;
+    } else {
+        return BackSensorVideoMinZoom;
+    }
+}
+#endif
 
 status_t OMXCameraAdapter::setParametersZoom(const android::CameraParameters &params,
                                              BaseCameraAdapter::AdapterState state)
@@ -98,17 +119,29 @@ status_t OMXCameraAdapter::doZoom(int index)
         ret = -EINVAL;
         }
 
-    if (mPreviousZoomIndx == index )
+    bool curZoomModeIsVideo = (mCapMode == OMXCameraAdapter::VIDEO_MODE ||
+        mCapMode == OMXCameraAdapter::VIDEO_MODE_HQ);
+
+    // When index == 0 and there was a switch between video and non-video mode or between sensors,
+    // we do need to perform the zoom, as 0th index is different between video and non-video modes
+    // and between different sensors.
+    if (mPreviousZoomIndx == index && (index != 0 || (curZoomModeIsVideo == mPrevZoomModeIsVideo &&
+                                                      mSensorIndex == mPrevZoomSensorIndex)))
         {
         return NO_ERROR;
         }
 
+    mPrevZoomModeIsVideo = curZoomModeIsVideo;
+    mPrevZoomSensorIndex = mSensorIndex;
+
     if ( NO_ERROR == ret )
         {
         OMX_INIT_STRUCT_PTR (&zoomControl, OMX_CONFIG_SCALEFACTORTYPE);
         zoomControl.nPortIndex = OMX_ALL;
-        zoomControl.xHeight = ZOOM_STEPS[index];
-        zoomControl.xWidth = ZOOM_STEPS[index];
+#ifdef CAMERAHAL_TUNA
+        zoomControl.xHeight = getZoomStep(index);
+        zoomControl.xWidth = zoomControl.xHeight;
+#endif
 
         eError =  OMX_SetConfig(mCameraAdapterParameters.mHandleComp,
                                 OMX_IndexConfigCommonDigitalZoom,
diff --git a/camera/inc/OMXCameraAdapter/OMXCameraAdapter.h b/camera/inc/OMXCameraAdapter/OMXCameraAdapter.h
index 10590df..5f0433c 100644
--- a/camera/inc/OMXCameraAdapter/OMXCameraAdapter.h
+++ b/camera/inc/OMXCameraAdapter/OMXCameraAdapter.h
@@ -536,6 +536,9 @@ private:
     //Digital zoom
     status_t setParametersZoom(const android::CameraParameters &params,
                                BaseCameraAdapter::AdapterState state);
+#ifdef CAMERAHAL_TUNA
+    int32_t getZoomStep(int index);
+#endif
     status_t doZoom(int index);
     status_t advanceZoom();
 
@@ -1093,7 +1096,7 @@ private:
     //current zoom
     android::Mutex mZoomLock;
     unsigned int mCurrentZoomIdx, mTargetZoomIdx, mPreviousZoomIndx;
-    bool mZoomUpdating, mZoomUpdate;
+    bool mZoomUpdating, mZoomUpdate, mPrevZoomModeIsVideo;
     int mZoomInc;
     bool mReturnZoomStatus;
     static const int32_t ZOOM_STEPS [];
@@ -1196,7 +1199,7 @@ private:
     android::Mutex mDoAFMutex;
     android::Condition mDoAFCond;
 
-    size_t mSensorIndex;
+    size_t mSensorIndex, mPrevZoomSensorIndex;
     CodingMode mCodingMode;
 
     // Time source delta of ducati & system time
-- 
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