Merge "Updating metadata for Hdr Viewfinder sample" into lmp-docs

1 files changed, 66 insertions, 0 deletions

diff --git a/media/HdrViewfinder/template-params.xml b/media/HdrViewfinder/template-params.xml
index 89c00563..915e09f3 100644
--- a/media/HdrViewfinder/template-params.xml
+++ b/media/HdrViewfinder/template-params.xml
@@ -33,4 +33,70 @@
 
     <template src="base"/>
 
+    <metadata>
+        <status>PUBLISHED</status>
+        <categories>Media</categories>
+        <technologies>Android</technologies>
+        <languages>Java</languages>
+        <solutions>Mobile</solutions>
+        <level>ADVANCED</level>
+        <icon>big_icon.png</icon>
+        <screenshots>
+            <img>screenshots/image1.png</img>
+        </screenshots>
+    <api_refs>
+        <android>android.hardware.camera2.CameraAccessException</android>
+        <android>android.hardware.camera2.CameraCaptureSession</android>
+        <android>android.hardware.camera2.CameraCharacteristics</android>
+        <android>android.hardware.camera2.CameraDevice</android>
+        <android>android.hardware.camera2.CameraManager</android>
+        <android>android.hardware.camera2.CaptureRequest</android>
+        <android>android.hardware.camera2.CaptureResult</android>
+        <android>android.hardware.camera2.TotalCaptureResult</android>
+    </api_refs>
+
+    <description>
+            <![CDATA[
+This demo implements a real-time high-dynamic-range camera viewfinder, by alternating
+the sensor's exposure time between two exposure values on even and odd frames, and then
+compositing together the latest two frames whenever a new frame is captured.
+            ]]>
+    </description>
+
+    <intro>
+            <![CDATA[
+A small demo of advanced camera functionality with the Android camera2 API.
+
+This demo implements a real-time high-dynamic-range camera viewfinder,
+by alternating the sensor's exposure time between two exposure values on even and odd
+frames, and then compositing together the latest two frames whenever a new frame is
+captured.
+
+The demo has three modes: Regular auto-exposure viewfinder, split-screen manual exposure,
+and the fused HDR viewfinder.  The latter two use manual exposure controlled by the user,
+by swiping up/down on the right and left halves of the viewfinder.  The left half controls
+the exposure time of even frames, and the right half controls the exposure time of odd frames.
+
+In split-screen mode, the even frames are shown on the left and the odd frames on the right,
+so the user can see two different exposures of the scene simultaneously.  In fused HDR mode,
+the even/odd frames are merged together into a single image.  By selecting different exposure
+values for the even/odd frames, the fused image has a higher dynamic range than the regular
+viewfinder.
+
+The HDR fusion and the split-screen viewfinder processing is done with RenderScript; as is the
+necessary YUV->RGB conversion. The camera subsystem outputs YUV images naturally, while the GPU
+and display subsystems generally only accept RGB data.  Therefore, after the images are
+fused/composited, a standard YUV->RGB color transform is applied before the the data is written
+to the output Allocation. The HDR fusion algorithm is very simple, and tends to result in
+lower-contrast scenes, but has very few artifacts and can run very fast.
+
+Data is passed between the subsystems (camera, RenderScript, and display) using the
+Android [android.view.Surface][1] class, which allows for zero-copy transport of large
+buffers between processes and subsystems.
+
+[1]: http://developer.android.com/reference/android/view/Surface.html
+            ]]>
+    </intro>
+</metadata>
+
 </sample>