1 /*
2 * Copyright 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <algorithm>
18 #include <unistd.h>
19 #include "AudioProcessorBase.h"
20 #include "ClipToRange.h"
21
22 using namespace flowgraph;
23
ClipToRange(int32_t channelCount)24 ClipToRange::ClipToRange(int32_t channelCount)
25 : input(*this, channelCount)
26 , output(*this, channelCount) {
27 }
28
onProcess(int64_t framePosition,int32_t numFrames)29 int32_t ClipToRange::onProcess(int64_t framePosition, int32_t numFrames) {
30 int32_t framesToProcess = input.pullData(framePosition, numFrames);
31 const float *inputBuffer = input.getBlock();
32 float *outputBuffer = output.getBlock();
33
34 int32_t numSamples = framesToProcess * output.getSamplesPerFrame();
35 for (int32_t i = 0; i < numSamples; i++) {
36 *outputBuffer++ = std::min(mMaximum, std::max(mMinimum, *inputBuffer++));
37 }
38
39 return framesToProcess;
40 }
41