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Diffstat (limited to 'webrtc/modules/video_processing/video_decimator.h')
-rw-r--r-- | webrtc/modules/video_processing/video_decimator.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/webrtc/modules/video_processing/video_decimator.h b/webrtc/modules/video_processing/video_decimator.h new file mode 100644 index 0000000000..1b871df8c3 --- /dev/null +++ b/webrtc/modules/video_processing/video_decimator.h @@ -0,0 +1,58 @@ +/* + * Copyright (c) 2011 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_VIDEO_PROCESSING_VIDEO_DECIMATOR_H_ +#define WEBRTC_MODULES_VIDEO_PROCESSING_VIDEO_DECIMATOR_H_ + +#include "webrtc/modules/include/module_common_types.h" +#include "webrtc/typedefs.h" + +namespace webrtc { + +class VPMVideoDecimator { + public: + VPMVideoDecimator(); + ~VPMVideoDecimator(); + + void Reset(); + + void EnableTemporalDecimation(bool enable); + + void SetTargetFramerate(int frame_rate); + + bool DropFrame(); + + void UpdateIncomingframe_rate(); + + // Get Decimated Frame Rate/Dimensions. + uint32_t GetDecimatedFrameRate(); + + // Get input frame rate. + uint32_t Inputframe_rate(); + + private: + void ProcessIncomingframe_rate(int64_t now); + + enum { kFrameCountHistory_size = 90 }; + enum { kFrameHistoryWindowMs = 2000 }; + + // Temporal decimation. + int32_t overshoot_modifier_; + uint32_t drop_count_; + uint32_t keep_count_; + uint32_t target_frame_rate_; + float incoming_frame_rate_; + int64_t incoming_frame_times_[kFrameCountHistory_size]; + bool enable_temporal_decimation_; +}; + +} // namespace webrtc + +#endif // WEBRTC_MODULES_VIDEO_PROCESSING_VIDEO_DECIMATOR_H_ |