Add an IMPL_DEFINED pixel format.
This change adds a new HAL pixel format that indicates that the specific format
is to be chosen by the gralloc implementation.
Change-Id: I326b5ec7347a20863b42119431ef1e4d22480fec
diff --git a/include/system/graphics.h b/include/system/graphics.h
index e0ad257..82b5fcc 100644
--- a/include/system/graphics.h
+++ b/include/system/graphics.h
@@ -124,6 +124,22 @@
*/
HAL_PIXEL_FORMAT_BLOB = 0x21,
+ /*
+ * Android format indicating that the choice of format is entirely up to the
+ * device-specific Gralloc implementation.
+ *
+ * The Gralloc implementation should examine the usage bits passed in when
+ * allocating a buffer with this format, and it should derive the pixel
+ * format from those usage flags. This format will never be used with any
+ * of the GRALLOC_USAGE_SW_* usage flags.
+ *
+ * If a buffer of this format is to be used as an OpenGL ES texture, the
+ * framework will assume that sampling the texture will always return an
+ * alpha value of 1.0 (i.e. the buffer contains only opaque pixel values).
+ *
+ */
+ HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED = 0x22,
+
/* Legacy formats (deprecated), used by ImageFormat.java */
HAL_PIXEL_FORMAT_YCbCr_422_SP = 0x10, // NV16
HAL_PIXEL_FORMAT_YCrCb_420_SP = 0x11, // NV21