ConvertToI420 accept I400

BUG=none
TEST=none
Review URL: http://webrtc-codereview.appspot.com/328009

git-svn-id: http://libyuv.googlecode.com/svn/trunk@114 16f28f9a-4ce2-e073-06de-1de4eb20be90

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 113
+Version: 114
 License: BSD
 License File: LICENSE
 

source/convert.cc

@@ -1066,6 +1066,15 @@ int ConvertToI420(const uint8* sample, size_t sample_size,
                      y, y_stride, u, u_stride, v, v_stride,
                      dst_width, inv_dst_height);
       break;
+    case FOURCC_I400:
+      src = sample + src_width * crop_y + crop_x;
+      I400ToI420(src, src_width,
+                 y, y_stride,
+                 u, u_stride,
+                 v, v_stride,
+                 dst_width, inv_dst_height);
+      break;
+
     // Biplanar formats
     case FOURCC_NV12:
       src = sample + (src_width * crop_y + crop_x);

source/video_common.h

@@ -43,6 +43,7 @@ enum FourCC {
   FOURCC_I420 = FOURCC('I', '4', '2', '0'),
   FOURCC_I422 = FOURCC('I', '4', '2', '2'),
   FOURCC_I444 = FOURCC('I', '4', '4', '4'),
+  FOURCC_I400 = FOURCC('I', '4', '0', '0'),
   FOURCC_YV12 = FOURCC('Y', 'V', '1', '2'),
   FOURCC_YV16 = FOURCC('Y', 'V', '1', '6'),
   FOURCC_YV24 = FOURCC('Y', 'V', '2', '4'),