add more color formats NV21 and YV12 in video capture (mainly from Android).

media/base/yuv_convert.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_BASE_YUV_CONVERT_H_
 #define MEDIA_BASE_YUV_CONVERT_H_
 
 #include "base/basictypes.h"
 
 namespace media {
@@ skipping 95 matching lines @@
                        int ystride,
                        int uvstride);
 
 void ConvertYUY2ToYUV(const uint8* src,
                       uint8* yplane,
                       uint8* uplane,
                       uint8* vplane,
                       int width,
                       int height);
 
+void ConvertNV21ToYUV(const uint8* src,

[scherkus (not reviewing), 2012/04/13 03:01:57]

do you know why none of these methods accept a stride?

[wjia(left Chromium), 2012/04/17 23:49:32]

There could be strides for Y and UV (typically aligned to 16 bytes). So far, we
haven't run into stride issue, possibly due to camera resolution selected. Will
re-visit when stride is needed. It requires some change in device capability.

+                      uint8* yplane,
+                      uint8* uplane,
+                      uint8* vplane,
+                      int width,
+                      int height);
+
 // Empty SIMD register state after calling optimized scaler functions.
 // This method is only used in unit test after calling SIMD functions.
 void EmptyRegisterState();
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_YUV_CONVERT_H_