commit 4d2588545fe9eee49a1ad5edeb4ff1c33e8081c0
author Leon Scroggins III <scroggo@google.com> Wed Nov 24 14:40:53 2021 -0500
committer Leon Scroggins III <scroggo@google.com> Mon Dec 06 15:25:51 2021 -0500
tree 82c03e11a3828d74a8a299443277d02de34fe784
parent e334dd4112538701aeb4cce6b21ab167f91df1ce

Add AHB and Pixel- Formats for R8

Add AHARDWAREBUFFER_FORMAT_R8_UNORM and PIXEL_FORMAT_R_8. These will be
used for an alpha 8 buffer representing the screen decorations.

Enum value matches AIDL R_8 in
I6f6b7f22e76609151a413ca6a6dbf55bd91911dd.

Bug: 193170859
Test: make
Change-Id: I4846327b29736ee811672801a683deb287342a8e

libs/ui/DebugUtils.cpp

diff --git a/libs/ui/DebugUtils.cpp b/libs/ui/DebugUtils.cpp
index 1f006ce..073da89 100644
--- a/libs/ui/DebugUtils.cpp
+++ b/libs/ui/DebugUtils.cpp
@@ -302,6 +302,8 @@
             return std::string("RGB_565");
         case android::PIXEL_FORMAT_BGRA_8888:
             return std::string("BGRA_8888");
+        case android::PIXEL_FORMAT_R_8:
+            return std::string("R_8");
         default:
             return StringPrintf("Unknown %#08x", format);
     }

libs/ui/PixelFormat.cpp

diff --git a/libs/ui/PixelFormat.cpp b/libs/ui/PixelFormat.cpp
index d1925cb..799fbc9 100644
--- a/libs/ui/PixelFormat.cpp
+++ b/libs/ui/PixelFormat.cpp
@@ -35,6 +35,8 @@
         case PIXEL_FORMAT_RGBA_5551:
         case PIXEL_FORMAT_RGBA_4444:
             return 2;
+        case PIXEL_FORMAT_R_8:
+            return 1;
     }
     return 0;
 }

libs/ui/include/ui/PixelFormat.h

diff --git a/libs/ui/include/ui/PixelFormat.h b/libs/ui/include/ui/PixelFormat.h
index 91ff39e..f422ce4 100644
--- a/libs/ui/include/ui/PixelFormat.h
+++ b/libs/ui/include/ui/PixelFormat.h
@@ -62,6 +62,7 @@
     PIXEL_FORMAT_RGBA_4444    = 7,                             // 16-bit ARGB
     PIXEL_FORMAT_RGBA_FP16    = HAL_PIXEL_FORMAT_RGBA_FP16,    // 64-bit RGBA
     PIXEL_FORMAT_RGBA_1010102 = HAL_PIXEL_FORMAT_RGBA_1010102, // 32-bit RGBA
+    PIXEL_FORMAT_R_8          = 0x38,
 };
 
 typedef int32_t PixelFormat;