Initial population of libyuv

Change-Id: I46a6a1525aebaba979b0f2ca5b58be2004901410

1 files changed, 48 insertions, 0 deletions

diff --git a/files/source/video_common.cc b/files/source/video_common.cc
new file mode 100644
index 00000000..8b8ee622
--- /dev/null
+++ b/files/source/video_common.cc
@@ -0,0 +1,48 @@
+/*
+ *  Copyright (c) 2011 The LibYuv project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+
+#include "video_common.h"
+
+#include <sstream>
+
+namespace libyuv {
+
+#define ARRAY_SIZE(x) (static_cast<int>((sizeof(x)/sizeof(x[0]))))
+
+struct FourCCAliasEntry {
+  uint32 alias;
+  uint32 canonical;
+};
+
+static const FourCCAliasEntry kFourCCAliases[] = {
+  {FOURCC_IYUV, FOURCC_I420},
+  {FOURCC_YU12, FOURCC_I420},
+  {FOURCC_YUYV, FOURCC_YUY2},
+  {FOURCC_YUVS, FOURCC_YUY2},
+  {FOURCC_HDYC, FOURCC_UYVY},
+  {FOURCC_2VUY, FOURCC_UYVY},
+  {FOURCC_BA81, FOURCC_BGGR},
+  {FOURCC_JPEG, FOURCC_MJPG},  // Note: JPEG has DHT while MJPG does not.
+  {FOURCC_RGB3, FOURCC_RAW},
+  {FOURCC_BGR3, FOURCC_24BG},
+};
+
+uint32 CanonicalFourCC(uint32 fourcc) {
+  for (int i = 0; i < ARRAY_SIZE(kFourCCAliases); ++i) {
+    if (kFourCCAliases[i].alias == fourcc) {
+      return kFourCCAliases[i].canonical;
+    }
+  }
+  // Not an alias, so return it as-is.
+  return fourcc;
+}
+
+}  // namespace libyuv