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authorMathias Agopian <mathias@google.com>2010-10-26 12:19:39 -0700
committerAndroid Git Automerger <android-git-automerger@android.com>2010-10-26 12:19:39 -0700
commitcaf9528e32201237c35284c253cb4503cafb73c6 (patch)
tree90e78e11e90956c6956f215cd66d32dd04c557f8
parentccacbce375af6422fa24f81bdc771a5460f60fed (diff)
parent2d1e978e3229bb524c6415580ad91fab051f944c (diff)
downloadlibhardware-caf9528e32201237c35284c253cb4503cafb73c6.tar.gz
am 2d1e978e: improve hardware.h documentation
-rw-r--r--include/hardware/hardware.h12
1 files changed, 8 insertions, 4 deletions
diff --git a/include/hardware/hardware.h b/include/hardware/hardware.h
index c41c81c4..598ec2ca 100644
--- a/include/hardware/hardware.h
+++ b/include/hardware/hardware.h
@@ -179,18 +179,22 @@ enum {
/**
* Transformation definitions
+ *
+ * IMPORTANT NOTE:
+ * HAL_TRANSFORM_ROT_90 is applied CLOCKWISE and AFTER HAL_TRANSFORM_FLIP_{H|V}.
+ *
*/
enum {
- /* flip source image horizontally */
+ /* flip source image horizontally (around the vertical axis) */
HAL_TRANSFORM_FLIP_H = 0x01,
- /* flip source image vertically */
+ /* flip source image vertically (around the horizontal axis)*/
HAL_TRANSFORM_FLIP_V = 0x02,
- /* rotate source image 90 degrees */
+ /* rotate source image 90 degrees clockwise */
HAL_TRANSFORM_ROT_90 = 0x04,
/* rotate source image 180 degrees */
HAL_TRANSFORM_ROT_180 = 0x03,
- /* rotate source image 270 degrees */
+ /* rotate source image 270 degrees clockwise */
HAL_TRANSFORM_ROT_270 = 0x07,
};