libyuv: Adding I420rotate. Updating gyp file to include rotation.

Review URL: http://webrtc-codereview.appspot.com/230002

git-svn-id: http://libyuv.googlecode.com/svn/trunk@30 16f28f9a-4ce2-e073-06de-1de4eb20be90

include/general.h

@@ -21,11 +21,11 @@
 namespace libyuv {
 
 // Supported rotation
-enum VideoRotationMode
+enum RotationMode
 {
   kRotateNone = 0,
   kRotateClockwise = 90,
-  kRotateCounterClockwise = -90,
+  kRotateCounterClockwise = 270,
   kRotate180 = 180,
 };
 
@@ -51,6 +51,17 @@ I420Crop(uint8* frame,
          int src_width, int src_height,
          int dst_width, int dst_height);
 
+// Rotate I420 frame
+int
+I420Rotate(const uint8* src_yplane, int src_ystride,
+           const uint8* src_uplane, int src_ustride,
+           const uint8* src_vplane, int src_vstride,
+           uint8* dst_yplane, int dst_ystride,
+           uint8* dst_uplane, int dst_ustride,
+           uint8* dst_vplane, int dst_vstride,
+           int width, int height,
+           RotationMode mode);
+
 
 } // namespace libyuv
 

libyuv.gyp

@@ -33,6 +33,7 @@
         'common/common.h',
         'common/constructor_magic.h',
         'source/cpu_id.h',
+        'source/rotate.h'
         'source/row.h',
         'source/video_common.h',
 
@@ -42,6 +43,8 @@
         'source/format_conversion.cc',
         'source/general.cc',
         'source/planar_functions.cc',
+        'source/rotate.cc',
+        'source/rotate_deinterleave.cc',
         'source/row_table.cc',
         'source/scale.cc',
         'source/video_common.cc',

source/general.cc

@@ -12,6 +12,10 @@
 
 #include <string.h>     // memcpy(), memset()
 
+#include "planar_functions.h"
+#include "rotate.h"
+
+
 namespace libyuv {
 
 int
@@ -305,4 +309,69 @@ I420CropPad(const uint8* src_frame, int src_width,
   return 0;
 }
 
+int
+I420Rotate(const uint8* src_yplane, int src_ystride,
+           const uint8* src_uplane, int src_ustride,
+           const uint8* src_vplane, int src_vstride,
+           uint8* dst_yplane, int dst_ystride,
+           uint8* dst_uplane, int dst_ustride,
+           uint8* dst_vplane, int dst_vstride,
+           int width, int height,
+           RotationMode mode)
+{
+  switch (mode){
+    // TODO: should return int
+    case kRotateNone:
+      // copy frame
+      I420Copy(src_yplane, src_ystride,
+               src_uplane, src_ustride,
+               src_vplane, src_vstride,
+               dst_yplane, dst_ystride,
+               dst_uplane, dst_ustride,
+               dst_vplane, dst_vstride,
+               width, height);
+      return 0;
+      break;
+    case kRotateClockwise:
+      Rotate90(src_yplane, src_ystride,
+               dst_yplane, dst_ystride,
+               width, height);
+      Rotate90(src_uplane, src_ustride,
+               dst_uplane, dst_ustride,
+               width, height);
+      Rotate90(src_vplane, src_vstride,
+               dst_vplane, dst_vstride,
+               width, height);
+      return 0;
+      break;
+    case kRotateCounterClockwise:
+      Rotate270(src_yplane, src_ystride,
+                dst_yplane, dst_ystride,
+                width, height);
+      Rotate270(src_uplane, src_ustride,
+                dst_uplane, dst_ustride,
+                width, height);
+      Rotate270(src_vplane, src_vstride,
+                dst_vplane, dst_vstride,
+                width, height);
+      return 0;
+      break;
+    case kRotate180:
+      Rotate180(src_yplane, src_ystride,
+                dst_yplane, dst_ystride,
+                width, height);
+      Rotate180(src_uplane, src_ustride,
+                dst_uplane, dst_ustride,
+                width, height);
+      Rotate180(src_vplane, src_vstride,
+                dst_vplane, dst_vstride,
+               width, height);
+      return 0;
+    break;
+  default:
+    return -1;
+    break;
+  }
+}
+
 } // nmaespace libyuv