Moving src/webrtc into src/.

In order to eliminate the WebRTC Subtree mirror in Chromium, 
WebRTC is moving the content of the src/webrtc directory up
to the src/ directory.

NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
TBR=tommi@webrtc.org

Bug: chromium:611808
Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38
Reviewed-on: https://webrtc-review.googlesource.com/1560
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19845}

modules/rtp_rtcp/include/rtp_cvo.h

@@ -0,0 +1,56 @@
+/*
+ *  Copyright (c) 2015 The WebRTC 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.
+ */
+#ifndef WEBRTC_MODULES_RTP_RTCP_INCLUDE_RTP_CVO_H_
+#define WEBRTC_MODULES_RTP_RTCP_INCLUDE_RTP_CVO_H_
+
+#include "webrtc/api/video/video_rotation.h"
+#include "webrtc/rtc_base/checks.h"
+
+namespace webrtc {
+
+// Please refer to http://www.etsi.org/deliver/etsi_ts/126100_126199/126114/
+// 12.07.00_60/ts_126114v120700p.pdf Section 7.4.5. The rotation of a frame is
+// the clockwise angle the frames must be rotated in order to display the frames
+// correctly if the display is rotated in its natural orientation.
+inline uint8_t ConvertVideoRotationToCVOByte(VideoRotation rotation) {
+  switch (rotation) {
+    case kVideoRotation_0:
+      return 0;
+    case kVideoRotation_90:
+      return 1;
+    case kVideoRotation_180:
+      return 2;
+    case kVideoRotation_270:
+      return 3;
+  }
+  RTC_NOTREACHED();
+  return 0;
+}
+
+inline VideoRotation ConvertCVOByteToVideoRotation(uint8_t cvo_byte) {
+  // CVO byte: |0 0 0 0 C F R R|.
+  const uint8_t rotation_bits = cvo_byte & 0x3;
+  switch (rotation_bits) {
+    case 0:
+      return kVideoRotation_0;
+    case 1:
+      return kVideoRotation_90;
+    case 2:
+      return kVideoRotation_180;
+    case 3:
+      return kVideoRotation_270;
+    default:
+      RTC_NOTREACHED();
+      return kVideoRotation_0;
+  }
+}
+
+}  // namespace webrtc
+#endif  // WEBRTC_MODULES_RTP_RTCP_INCLUDE_RTP_CVO_H_