ARGBToI422 which is similar to ARGBToI420

BUG=none
TEST=libyuvTest.ARGBToI422_CvsOPT (836 ms)
Review URL: https://webrtc-codereview.appspot.com/637006

git-svn-id: http://libyuv.googlecode.com/svn/trunk@278 16f28f9a-4ce2-e073-06de-1de4eb20be90

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 276
+Version: 277
 License: BSD
 License File: LICENSE
 

include/libyuv/planar_functions.h

@@ -173,6 +173,13 @@ int ARGBToI400(const uint8* src_argb, int src_stride_argb,
                uint8* dst_y, int dst_stride_y,
                int width, int height);
 
+// ARGB little endian (bgra in memory) to I422
+int ARGBToI422(const uint8* src_frame, int src_stride_frame,
+               uint8* dst_y, int dst_stride_y,
+               uint8* dst_u, int dst_stride_u,
+               uint8* dst_v, int dst_stride_v,
+               int width, int height);
+
 // Draw a rectangle into I420.
 int I420Rect(uint8* dst_y, int dst_stride_y,
              uint8* dst_u, int dst_stride_u,

include/libyuv/version.h

@@ -11,7 +11,7 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 276
+#define LIBYUV_VERSION 277
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_
 

source/planar_functions.cc

@@ -432,6 +432,52 @@ int ARGBToI400(const uint8* src_argb, int src_stride_argb,
   return 0;
 }
 
+// ARGB little endian (bgra in memory) to I422
+// same as I420 except UV plane is full height
+int ARGBToI422(const uint8* src_argb, int src_stride_argb,
+               uint8* dst_y, int dst_stride_y,
+               uint8* dst_u, int dst_stride_u,
+               uint8* dst_v, int dst_stride_v,
+               int width, int height) {
+  if (height < 0) {
+    height = -height;
+    src_argb = src_argb + (height - 1) * src_stride_argb;
+    src_stride_argb = -src_stride_argb;
+  }
+  void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int pix) =
+      ARGBToYRow_C;
+  void (*ARGBToUVRow)(const uint8* src_argb0, int src_stride_argb,
+                      uint8* dst_u, uint8* dst_v, int width) = ARGBToUVRow_C;
+#if defined(HAS_ARGBTOYROW_SSSE3)
+  if (TestCpuFlag(kCpuHasSSSE3)) {
+    if (width > 16) {
+      ARGBToUVRow = ARGBToUVRow_Any_SSSE3;
+      ARGBToYRow = ARGBToYRow_Any_SSSE3;
+    }
+    if (IS_ALIGNED(width, 16)) {
+      ARGBToUVRow = ARGBToUVRow_Unaligned_SSSE3;
+      ARGBToYRow = ARGBToYRow_Unaligned_SSSE3;
+      if (IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride_argb, 16)) {
+        ARGBToUVRow = ARGBToUVRow_SSSE3;
+        if (IS_ALIGNED(dst_y, 16) && IS_ALIGNED(dst_stride_y, 16)) {
+          ARGBToYRow = ARGBToYRow_SSSE3;
+        }
+      }
+    }
+  }
+#endif
+
+  for (int y = 0; y < height; ++y) {
+    ARGBToUVRow(src_argb, 0, dst_u, dst_v, width);
+    ARGBToYRow(src_argb, dst_y, width);
+    src_argb += src_stride_argb;
+    dst_y += dst_stride_y;
+    dst_u += dst_stride_u;
+    dst_v += dst_stride_v;
+  }
+  return 0;
+}
+
 int ABGRToARGB(const uint8* src_abgr, int src_stride_abgr,
                uint8* dst_argb, int dst_stride_argb,
                int width, int height) {