Add Rotate Plane

BUG=233
TEST=RotatePlane*
R=ryanpetrie@google.com

Review URL: https://webrtc-codereview.appspot.com/1582004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@704 16f28f9a-4ce2-e073-06de-1de4eb20be90

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 703
+Version: 704
 License: BSD
 License File: LICENSE
 

include/libyuv/rotate.h

@@ -50,7 +50,13 @@ int NV12ToI420Rotate(const uint8* src_y, int src_stride_y,
                      uint8* dst_v, int dst_stride_v,
                      int src_width, int src_height, enum RotationMode mode);
 
-// Rotate planes by 90, 180, 270
+// Rotate a plane by 0, 90, 180, or 270.
+LIBYUV_API
+int RotatePlane(const uint8* src, int src_stride,
+                uint8* dst, int dst_stride,
+                int src_width, int src_height, enum RotationMode mode);
+
+// Rotate planes by 90, 180, 270. Deprecated.
 LIBYUV_API
 void RotatePlane90(const uint8* src, int src_stride,
                    uint8* dst, int dst_stride,
@@ -75,7 +81,7 @@ void RotateUV90(const uint8* src, int src_stride,
 // Rotations for when U and V are interleaved.
 // These functions take one input pointer and
 // split the data into two buffers while
-// rotating them.
+// rotating them. Deprecated.
 LIBYUV_API
 void RotateUV180(const uint8* src, int src_stride,
                  uint8* dst_a, int dst_stride_a,
@@ -91,6 +97,7 @@ void RotateUV270(const uint8* src, int src_stride,
 // The 90 and 270 functions are based on transposes.
 // Doing a transpose with reversing the read/write
 // order will result in a rotation by +- 90 degrees.
+// Deprecated.
 LIBYUV_API
 void TransposePlane(const uint8* src, int src_stride,
                     uint8* dst, int dst_stride,

include/libyuv/version.h

@@ -11,6 +11,6 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_  // NOLINT
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 703
+#define LIBYUV_VERSION 704
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_  NOLINT

source/rotate.cc

@@ -1089,6 +1089,50 @@ void RotateUV180(const uint8* src, int src_stride,
   }
 }
 
+LIBYUV_API
+int RotatePlane(const uint8* src, int src_stride,
+                uint8* dst, int dst_stride,
+                int width, int height,
+                RotationMode mode) {
+  if (!src || width <= 0 || height == 0 || !dst) {
+    return -1;
+  }
+
+  // Negative height means invert the image.
+  if (height < 0) {
+    height = -height;
+    src = src + (height - 1) * src_stride;
+    src_stride = -src_stride;
+  }
+
+  switch (mode) {
+    case kRotate0:
+      // copy frame
+      CopyPlane(src, src_stride,
+                dst, dst_stride,
+                width, height);
+      return 0;
+    case kRotate90:
+      RotatePlane90(src, src_stride,
+                    dst, dst_stride,
+                    width, height);
+      return 0;
+    case kRotate270:
+      RotatePlane270(src, src_stride,
+                     dst, dst_stride,
+                     width, height);
+      return 0;
+    case kRotate180:
+      RotatePlane180(src, src_stride,
+                     dst, dst_stride,
+                     width, height);
+      return 0;
+    default:
+      break;
+  }
+  return -1;
+}
+
 LIBYUV_API
 int I420Rotate(const uint8* src_y, int src_stride_y,
                const uint8* src_u, int src_stride_u,