1*05767d91SRobert Wu /* 2*05767d91SRobert Wu * Copyright 2020 The Android Open Source Project 3*05767d91SRobert Wu * 4*05767d91SRobert Wu * Licensed under the Apache License, Version 2.0 (the "License"); 5*05767d91SRobert Wu * you may not use this file except in compliance with the License. 6*05767d91SRobert Wu * You may obtain a copy of the License at 7*05767d91SRobert Wu * 8*05767d91SRobert Wu * http://www.apache.org/licenses/LICENSE-2.0 9*05767d91SRobert Wu * 10*05767d91SRobert Wu * Unless required by applicable law or agreed to in writing, software 11*05767d91SRobert Wu * distributed under the License is distributed on an "AS IS" BASIS, 12*05767d91SRobert Wu * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13*05767d91SRobert Wu * See the License for the specific language governing permissions and 14*05767d91SRobert Wu * limitations under the License. 15*05767d91SRobert Wu */ 16*05767d91SRobert Wu 17*05767d91SRobert Wu #include <algorithm> 18*05767d91SRobert Wu #include <unistd.h> 19*05767d91SRobert Wu 20*05767d91SRobert Wu #include "FlowGraphNode.h" 21*05767d91SRobert Wu #include "SourceI32.h" 22*05767d91SRobert Wu 23*05767d91SRobert Wu #if FLOWGRAPH_ANDROID_INTERNAL 24*05767d91SRobert Wu #include <audio_utils/primitives.h> 25*05767d91SRobert Wu #endif 26*05767d91SRobert Wu 27*05767d91SRobert Wu using namespace FLOWGRAPH_OUTER_NAMESPACE::flowgraph; 28*05767d91SRobert Wu SourceI32(int32_t channelCount)29*05767d91SRobert WuSourceI32::SourceI32(int32_t channelCount) 30*05767d91SRobert Wu : FlowGraphSourceBuffered(channelCount) { 31*05767d91SRobert Wu } 32*05767d91SRobert Wu onProcess(int32_t numFrames)33*05767d91SRobert Wuint32_t SourceI32::onProcess(int32_t numFrames) { 34*05767d91SRobert Wu float *floatData = output.getBuffer(); 35*05767d91SRobert Wu const int32_t channelCount = output.getSamplesPerFrame(); 36*05767d91SRobert Wu 37*05767d91SRobert Wu const int32_t framesLeft = mSizeInFrames - mFrameIndex; 38*05767d91SRobert Wu const int32_t framesToProcess = std::min(numFrames, framesLeft); 39*05767d91SRobert Wu const int32_t numSamples = framesToProcess * channelCount; 40*05767d91SRobert Wu 41*05767d91SRobert Wu const int32_t *intBase = static_cast<const int32_t *>(mData); 42*05767d91SRobert Wu const int32_t *intData = &intBase[mFrameIndex * channelCount]; 43*05767d91SRobert Wu 44*05767d91SRobert Wu #if FLOWGRAPH_ANDROID_INTERNAL 45*05767d91SRobert Wu memcpy_to_float_from_i32(floatData, intData, numSamples); 46*05767d91SRobert Wu #else 47*05767d91SRobert Wu for (int i = 0; i < numSamples; i++) { 48*05767d91SRobert Wu *floatData++ = *intData++ * kScale; 49*05767d91SRobert Wu } 50*05767d91SRobert Wu #endif 51*05767d91SRobert Wu 52*05767d91SRobert Wu mFrameIndex += framesToProcess; 53*05767d91SRobert Wu return framesToProcess; 54*05767d91SRobert Wu } 55