From 6b5a8efff7759c941f5a11ead2f67330dea2f14c Mon Sep 17 00:00:00 2001
From: "fbarchard@google.com"
 <fbarchard@google.com@16f28f9a-4ce2-e073-06de-1de4eb20be90>
Date: Tue, 9 Oct 2012 02:49:59 +0000
Subject: [PATCH] I400 invert support which fixes a valgrind bug BUG=117
 TEST=I400ToI400Invert_OptVsC Review URL:
 https://webrtc-codereview.appspot.com/859010

git-svn-id: http://libyuv.googlecode.com/svn/trunk@398 16f28f9a-4ce2-e073-06de-1de4eb20be90
---
 README.chromium                   |  2 +-
 include/libyuv/planar_functions.h |  7 +++++--
 include/libyuv/version.h          |  2 +-
 source/planar_functions.cc        | 18 ++++++++++++++++++
 4 files changed, 25 insertions(+), 4 deletions(-)

diff --git a/README.chromium b/README.chromium
index e5bfb8e31..b3da154c1 100644
--- a/README.chromium
+++ b/README.chromium
@@ -1,6 +1,6 @@
 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 397
+Version: 398
 License: BSD
 License File: LICENSE
 
diff --git a/include/libyuv/planar_functions.h b/include/libyuv/planar_functions.h
index 7e43dabb2..61d6e9e4a 100644
--- a/include/libyuv/planar_functions.h
+++ b/include/libyuv/planar_functions.h
@@ -27,8 +27,11 @@ void SetPlane(uint8* dst_y, int dst_stride_y,
               int width, int height,
               uint32 value);
 
-// Alias.
-#define I400ToI400 CopyPlane
+// Copy I400.  Supports inverting.
+LIBYUV_API
+int I400ToI400(const uint8* src_y, int src_stride_y,
+               uint8* dst_y, int dst_stride_y,
+               int width, int height);
 
 // Copy a plane of data (I420 to I400).
 LIBYUV_API
diff --git a/include/libyuv/version.h b/include/libyuv/version.h
index e782ae184..b12c2e7ac 100644
--- a/include/libyuv/version.h
+++ b/include/libyuv/version.h
@@ -11,6 +11,6 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_  // NOLINT
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 397
+#define LIBYUV_VERSION 398
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_  NOLINT
diff --git a/source/planar_functions.cc b/source/planar_functions.cc
index a7f5086a1..58c102639 100644
--- a/source/planar_functions.cc
+++ b/source/planar_functions.cc
@@ -55,6 +55,24 @@ void CopyPlane(const uint8* src_y, int src_stride_y,
   }
 }
 
+// Copy I400.
+LIBYUV_API
+int I400ToI400(const uint8* src_y, int src_stride_y,
+               uint8* dst_y, int dst_stride_y,
+               int width, int height) {
+  if (!src_y || !dst_y || width <= 0 || height == 0) {
+    return -1;
+  }
+  // Negative height means invert the image.
+  if (height < 0) {
+    height = -height;
+    src_y = src_y + (height - 1) * src_stride_y;
+    src_stride_y = -src_stride_y;
+  }
+  CopyPlane(src_y, src_stride_y, dst_y, dst_stride_y, width, height);
+  return 0;
+}
+
 // Convert I420 to I400.
 LIBYUV_API
 int I420ToI400(const uint8* src_y, int src_stride_y,