Camera: Add OPAQUE pixel format to CameraParameters

This is only used to support recording with HAL 2 in the
KEY_VIDEO_FRAME_FORMAT parameter, and is not exposed to applications.

Bug: 6243944
Change-Id: I5976a748d199ae98189bd03af5bbd9e18cbd6bf0
diff --git a/include/camera/CameraParameters.h b/include/camera/CameraParameters.h
index 36248a0..4d5aa36 100644
--- a/include/camera/CameraParameters.h
+++ b/include/camera/CameraParameters.h
@@ -606,6 +606,8 @@
     // Raw bayer format used for images, which is 10 bit precision samples
     // stored in 16 bit words. The filter pattern is RGGB.
     static const char PIXEL_FORMAT_BAYER_RGGB[];
+    // Pixel format is not known to the framework
+    static const char PIXEL_FORMAT_ANDROID_OPAQUE[];
 
     // Values for focus mode settings.
     // Auto-focus mode. Applications should call