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/*
* Copyright 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <algorithm>
#include <unistd.h>
#include "FlowGraphNode.h"
#include "SinkFloat.h"
using namespace flowgraph;
SinkFloat::SinkFloat(int32_t channelCount)
: FlowGraphSink(channelCount) {
}
int32_t SinkFloat::read(int64_t framePosition, void *data, int32_t numFrames) {
// printf("SinkFloat::read(,,%d)\n", numFrames);
float *floatData = (float *) data;
int32_t channelCount = input.getSamplesPerFrame();
int32_t framesLeft = numFrames;
while (framesLeft > 0) {
// Run the graph and pull data through the input port.
int32_t framesPulled = pullData(framePosition, framesLeft);
// printf("SinkFloat::read: framesLeft = %d, framesPulled = %d\n", framesLeft, framesPulled);
if (framesPulled <= 0) {
break;
}
const float *signal = input.getBuffer();
int32_t numSamples = framesPulled * channelCount;
memcpy(floatData, signal, numSamples * sizeof(float));
floatData += numSamples;
framesLeft -= framesPulled;
framePosition += framesPulled;
}
// printf("SinkFloat returning %d\n", numFrames - framesLeft);
return numFrames - framesLeft;
}
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