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Side by Side Diff: webrtc/modules/video_coding/inter_frame_delay.h

Issue 1528503003: Lint enabled for webrtc/modules/video_coding folder. (Closed) Base URL: https://chromium.googlesource.com/external/webrtc.git@master
Patch Set: Rebase Created 5 years ago
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1 /* 1 /*
2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. 2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
3 * 3 *
4 * Use of this source code is governed by a BSD-style license 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 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 6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may 7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree. 8 * be found in the AUTHORS file in the root of the source tree.
9 */ 9 */
10 10
11 #ifndef WEBRTC_MODULES_VIDEO_CODING_INTER_FRAME_DELAY_H_ 11 #ifndef WEBRTC_MODULES_VIDEO_CODING_INTER_FRAME_DELAY_H_
12 #define WEBRTC_MODULES_VIDEO_CODING_INTER_FRAME_DELAY_H_ 12 #define WEBRTC_MODULES_VIDEO_CODING_INTER_FRAME_DELAY_H_
13 13
14 #include "webrtc/typedefs.h" 14 #include "webrtc/typedefs.h"
15 15
16 namespace webrtc 16 namespace webrtc {
17 {
18 17
19 class VCMInterFrameDelay 18 class VCMInterFrameDelay {
20 { 19 public:
21 public: 20 explicit VCMInterFrameDelay(int64_t currentWallClock);
22 VCMInterFrameDelay(int64_t currentWallClock);
23 21
24 // Resets the estimate. Zeros are given as parameters. 22 // Resets the estimate. Zeros are given as parameters.
25 void Reset(int64_t currentWallClock); 23 void Reset(int64_t currentWallClock);
26 24
27 // Calculates the delay of a frame with the given timestamp. 25 // Calculates the delay of a frame with the given timestamp.
28 // This method is called when the frame is complete. 26 // This method is called when the frame is complete.
29 // 27 //
30 // Input: 28 // Input:
31 // - timestamp : RTP timestamp of a received frame 29 // - timestamp : RTP timestamp of a received frame
32 // - *delay : Pointer to memory where the result should be stored 30 // - *delay : Pointer to memory where the result should be
33 // - currentWallClock : The current time in milliseconds. 31 // stored
34 // Should be -1 for normal operation, only us ed for testing. 32 // - currentWallClock : The current time in milliseconds.
35 // Return value : true if OK, false when reordered timestamp s 33 // Should be -1 for normal operation, only used
36 bool CalculateDelay(uint32_t timestamp, 34 // for testing.
37 int64_t *delay, 35 // Return value : true if OK, false when reordered timestamps
38 int64_t currentWallClock); 36 bool CalculateDelay(uint32_t timestamp,
37 int64_t* delay,
38 int64_t currentWallClock);
39 39
40 // Returns the current difference between incoming timestamps 40 // Returns the current difference between incoming timestamps
41 // 41 //
42 // Return value : Wrap-around compensated difference between incoming 42 // Return value : Wrap-around compensated difference between
43 // timestamps. 43 // incoming
44 uint32_t CurrentTimeStampDiffMs() const; 44 // timestamps.
45 uint32_t CurrentTimeStampDiffMs() const;
45 46
46 private: 47 private:
47 // Controls if the RTP timestamp counter has had a wrap around 48 // Controls if the RTP timestamp counter has had a wrap around
48 // between the current and the previously received frame. 49 // between the current and the previously received frame.
49 // 50 //
50 // Input: 51 // Input:
51 // - timestmap : RTP timestamp of the current frame. 52 // - timestmap : RTP timestamp of the current frame.
52 void CheckForWrapArounds(uint32_t timestamp); 53 void CheckForWrapArounds(uint32_t timestamp);
53 54
54 int64_t _zeroWallClock; // Local timestamp of the first video packet received 55 int64_t _zeroWallClock; // Local timestamp of the first video packet received
55 int32_t _wrapArounds; // Number of wrapArounds detected 56 int32_t _wrapArounds; // Number of wrapArounds detected
56 // The previous timestamp passed to the delay estimate 57 // The previous timestamp passed to the delay estimate
57 uint32_t _prevTimestamp; 58 uint32_t _prevTimestamp;
58 // The previous wall clock timestamp used by the delay estimate 59 // The previous wall clock timestamp used by the delay estimate
59 int64_t _prevWallClock; 60 int64_t _prevWallClock;
60 // Wrap-around compensated difference between incoming timestamps 61 // Wrap-around compensated difference between incoming timestamps
61 int64_t _dTS; 62 int64_t _dTS;
62 }; 63 };
63 64
64 } // namespace webrtc 65 } // namespace webrtc
65 66
66 #endif // WEBRTC_MODULES_VIDEO_CODING_INTER_FRAME_DELAY_H_ 67 #endif // WEBRTC_MODULES_VIDEO_CODING_INTER_FRAME_DELAY_H_
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