SnapdragonCamera: Set video size for preview in HFR case

Due to HW limitations, the preview size needs to match
the video size in HFR use cases. Otherwise the framerate
may be lower than expected.

Change-Id: I09ce25befa781b683e167da1ab4c20b5214df59b
CRs-Fixed: 656181

1 files changed, 57 insertions, 1 deletions

diff --git a/src/com/android/camera/VideoModule.java b/src/com/android/camera/VideoModule.java
index 224f9f7eb..9d0700dd1 100644
--- a/src/com/android/camera/VideoModule.java
+++ b/src/com/android/camera/VideoModule.java
@@ -828,6 +828,61 @@ public class VideoModule implements CameraModule,
        }
     }
 
+    boolean isHFREnabled(int videoWidth, int videoHeight) {
+        if ((null == mPreferences) || (null == mParameters)) {
+            return false;
+        }
+
+        String HighFrameRate = mPreferences.getString(
+                CameraSettings.KEY_VIDEO_HIGH_FRAME_RATE,
+                mActivity. getString(R.string.pref_camera_hfr_default));
+
+        if(!("off".equals(HighFrameRate)) && !("hsr".equals(HighFrameRate))) {
+            Size size = null;
+            try {
+                if (isSupported(HighFrameRate, mParameters.getSupportedVideoHighFrameRateModes())) {
+                    int index = mParameters.getSupportedVideoHighFrameRateModes().indexOf(
+                            HighFrameRate);
+                    size = mParameters.getSupportedHfrSizes().get(index);
+                } else {
+                    return false;
+                }
+            } catch (NullPointerException e) {
+                return false;
+            } catch (IndexOutOfBoundsException e) {
+                return false;
+            }
+
+            if (size != null) {
+                if (videoWidth > size.width || videoHeight > size.height) {
+                    return false;
+                }
+            } else {
+                return false;
+            }
+
+            int hfrFps = Integer.parseInt(HighFrameRate);
+            int inputBitrate = videoWidth * videoHeight * hfrFps;
+
+            boolean supported = false;
+            List<VideoEncoderCap> videoEncoders = EncoderCapabilities.getVideoEncoders();
+            for (VideoEncoderCap videoEncoder: videoEncoders) {
+                if (videoEncoder.mCodec == mVideoEncoder) {
+                    int maxBitrate = (videoEncoder.mMaxHFRFrameWidth *
+                                     videoEncoder.mMaxHFRFrameHeight *
+                                     videoEncoder.mMaxHFRMode);
+                    if (inputBitrate > 0 && inputBitrate <= maxBitrate ) {
+                        supported = true;
+                    }
+                    break;
+                }
+            }
+
+            return supported;
+        }
+
+        return false;
+    }
 
     @TargetApi(Build.VERSION_CODES.HONEYCOMB)
     private void getDesiredPreviewSize() {
@@ -835,7 +890,8 @@ public class VideoModule implements CameraModule,
             return;
         }
         mParameters = mCameraDevice.getParameters();
-        if (mParameters.getSupportedVideoSizes() == null || is1080pEnabled()) {
+        if (mParameters.getSupportedVideoSizes() == null || is1080pEnabled() ||
+                    isHFREnabled(mProfile.videoFrameWidth, mProfile.videoFrameHeight)) {
             mDesiredPreviewWidth = mProfile.videoFrameWidth;
             mDesiredPreviewHeight = mProfile.videoFrameHeight;
         } else { // Driver supports separates outputs for preview and video.