1 /* 2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 #ifndef WEBRTC_MODULES_RTP_RTCP_INCLUDE_RTP_CVO_H_ 11 #define WEBRTC_MODULES_RTP_RTCP_INCLUDE_RTP_CVO_H_ 12 13 #include "webrtc/common_video/rotation.h" 14 15 namespace webrtc { 16 17 // Please refer to http://www.etsi.org/deliver/etsi_ts/126100_126199/126114/ 18 // 12.07.00_60/ts_126114v120700p.pdf Section 7.4.5. The rotation of a frame is 19 // the clockwise angle the frames must be rotated in order to display the frames 20 // correctly if the display is rotated in its natural orientation. ConvertVideoRotationToCVOByte(VideoRotation rotation)21inline uint8_t ConvertVideoRotationToCVOByte(VideoRotation rotation) { 22 switch (rotation) { 23 case kVideoRotation_0: 24 return 0; 25 case kVideoRotation_90: 26 return 1; 27 case kVideoRotation_180: 28 return 2; 29 case kVideoRotation_270: 30 return 3; 31 } 32 assert(false); 33 return 0; 34 } 35 ConvertCVOByteToVideoRotation(uint8_t rotation)36inline VideoRotation ConvertCVOByteToVideoRotation(uint8_t rotation) { 37 switch (rotation) { 38 case 0: 39 return kVideoRotation_0; 40 case 1: 41 return kVideoRotation_90; 42 case 2: 43 return kVideoRotation_180; 44 break; 45 case 3: 46 return kVideoRotation_270; 47 default: 48 assert(false); 49 return kVideoRotation_0; 50 } 51 } 52 53 } // namespace webrtc 54 #endif // WEBRTC_MODULES_RTP_RTCP_INCLUDE_RTP_CVO_H_ 55