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 #ifndef FLOWGRAPH_MONO_TO_MULTI_CONVERTER_H 18 #define FLOWGRAPH_MONO_TO_MULTI_CONVERTER_H 19 20 #include <unistd.h> 21 #include <sys/types.h> 22 23 #include "FlowGraphNode.h" 24 25 namespace FLOWGRAPH_OUTER_NAMESPACE { 26 namespace flowgraph { 27 28 /** 29 * Convert a monophonic stream to a multi-channel interleaved stream 30 * with the same signal on each channel. 31 */ 32 class MonoToMultiConverter : public FlowGraphNode { 33 public: 34 explicit MonoToMultiConverter(int32_t outputChannelCount); 35 36 virtual ~MonoToMultiConverter(); 37 38 int32_t onProcess(int32_t numFrames) override; 39 getName()40 const char *getName() override { 41 return "MonoToMultiConverter"; 42 } 43 44 FlowGraphPortFloatInput input; 45 FlowGraphPortFloatOutput output; 46 }; 47 48 } /* namespace flowgraph */ 49 } /* namespace FLOWGRAPH_OUTER_NAMESPACE */ 50 51 #endif //FLOWGRAPH_MONO_TO_MULTI_CONVERTER_H 52