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https://github.com/hajimehoshi/ebiten.git
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71 lines
1.8 KiB
C++
Vendored
71 lines
1.8 KiB
C++
Vendored
/*
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* Copyright 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef FLOWGRAPH_CLIP_TO_RANGE_H
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#define FLOWGRAPH_CLIP_TO_RANGE_H
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#include <atomic>
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#include <unistd.h>
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#include <sys/types.h>
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#include "oboe_flowgraph_FlowGraphNode_android.h"
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namespace FLOWGRAPH_OUTER_NAMESPACE {
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namespace flowgraph {
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// This is 3 dB, (10^(3/20)), to match the maximum headroom in AudioTrack for float data.
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// It is designed to allow occasional transient peaks.
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constexpr float kDefaultMaxHeadroom = 1.41253754f;
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constexpr float kDefaultMinHeadroom = -kDefaultMaxHeadroom;
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class ClipToRange : public FlowGraphFilter {
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public:
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explicit ClipToRange(int32_t channelCount);
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virtual ~ClipToRange() = default;
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int32_t onProcess(int32_t numFrames) override;
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void setMinimum(float min) {
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mMinimum = min;
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}
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float getMinimum() const {
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return mMinimum;
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}
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void setMaximum(float min) {
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mMaximum = min;
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}
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float getMaximum() const {
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return mMaximum;
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}
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const char *getName() override {
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return "ClipToRange";
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}
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private:
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float mMinimum = kDefaultMinHeadroom;
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float mMaximum = kDefaultMaxHeadroom;
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};
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} /* namespace flowgraph */
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} /* namespace FLOWGRAPH_OUTER_NAMESPACE */
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#endif //FLOWGRAPH_CLIP_TO_RANGE_H
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