Index: webrtc/modules/video_processing/util/noise_estimation.h |
diff --git a/webrtc/modules/video_processing/util/noise_estimation.h b/webrtc/modules/video_processing/util/noise_estimation.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..ca5cc2324fbf4b17294f2b53fb6381256aca80b4 |
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+++ b/webrtc/modules/video_processing/util/noise_estimation.h |
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+/* |
+ * Copyright (c) 2016 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_UTIL_NOISE_ESTIMATION_H_ |
+#define WEBRTC_MODULES_VIDEO_PROCESSING_UTIL_NOISE_ESTIMATION_H_ |
+ |
+#include "webrtc/base/scoped_ptr.h" |
+#include "webrtc/modules/include/module_common_types.h" |
+#include "webrtc/modules/video_processing/include/video_processing_defines.h" |
+#include "webrtc/modules/video_processing/util/denoiser_filter.h" |
+ |
+namespace webrtc { |
+ |
+#define EXPERIMENTAL 0 |
+#define DISPLAY 0 |
+ |
+const int kNoiseThreshold = 200; |
+const int kNoiseThresholdNeon = 70; |
+const int kConsecLowVarFrame = 6; |
+const int kAverageLumaMin = 20; |
+const int kAverageLumaMax = 220; |
+const int kBlockSelectionVarMax = kNoiseThreshold << 1; |
+ |
+class NoiseEstimation { |
+ public: |
+ void Init(int width, int height, CpuType cpu_type); |
+ void GetNoise(int mb_index, uint32_t var, uint32_t luma); |
+ void ResetConsecLowVar(int mb_index); |
+ void UpdateNoiseLevel(); |
+ // 0: low noise, 1: high noise |
+ uint8_t GetNoiseLevel(); |
+ |
+ private: |
+ int width_; |
+ int height_; |
+ int mb_rows_; |
+ int mb_cols_; |
+ CpuType cpu_type_; |
+ uint32_t noise_var_; |
+ double noise_var_accum_; |
+ int num_noisy_block_; |
+ int num_static_block_; |
+ double percent_static_block_; |
+ rtc::scoped_ptr<uint32_t[]> consec_low_var_; |
+}; |
+ |
+} // namespace webrtc |
+ |
+#endif // WEBRTC_MODULES_VIDEO_PROCESSING_UTIL_NOISE_ESTIMATION_H_ |