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1 /* | |
2 * Copyright (c) 2011 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 | |
11 #ifndef WEBRTC_MODULES_VIDEO_PROCESSING_VIDEO_DECIMATOR_H_ | |
12 #define WEBRTC_MODULES_VIDEO_PROCESSING_VIDEO_DECIMATOR_H_ | |
13 | |
14 #include "webrtc/modules/include/module_common_types.h" | |
15 #include "webrtc/typedefs.h" | |
16 | |
17 namespace webrtc { | |
18 | |
19 class VPMVideoDecimator { | |
20 public: | |
21 VPMVideoDecimator(); | |
22 ~VPMVideoDecimator(); | |
23 | |
24 void Reset(); | |
25 | |
26 void EnableTemporalDecimation(bool enable); | |
27 | |
28 void SetTargetFramerate(int frame_rate); | |
29 | |
30 bool DropFrame(); | |
31 | |
32 void UpdateIncomingframe_rate(); | |
33 | |
34 // Get Decimated Frame Rate/Dimensions. | |
35 uint32_t GetDecimatedFrameRate(); | |
36 | |
37 // Get input frame rate. | |
38 uint32_t Inputframe_rate(); | |
39 | |
40 private: | |
41 void ProcessIncomingframe_rate(int64_t now); | |
42 | |
43 enum { kFrameCountHistory_size = 90 }; | |
44 enum { kFrameHistoryWindowMs = 2000 }; | |
45 | |
46 // Temporal decimation. | |
47 int32_t overshoot_modifier_; | |
48 uint32_t drop_count_; | |
49 uint32_t keep_count_; | |
50 uint32_t target_frame_rate_; | |
51 float incoming_frame_rate_; | |
52 int64_t incoming_frame_times_[kFrameCountHistory_size]; | |
53 bool enable_temporal_decimation_; | |
54 }; | |
55 | |
56 } // namespace webrtc | |
57 | |
58 #endif // WEBRTC_MODULES_VIDEO_PROCESSING_VIDEO_DECIMATOR_H_ | |
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