1 /*
2 * Copyright 2018 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 "FlowGraphNode.h"
20 #include "SinkFloat.h"
21
22 using namespace FLOWGRAPH_OUTER_NAMESPACE::flowgraph;
23
SinkFloat(int32_t channelCount)24 SinkFloat::SinkFloat(int32_t channelCount)
25 : FlowGraphSink(channelCount) {
26 }
27
read(void * data,int32_t numFrames)28 int32_t SinkFloat::read(void *data, int32_t numFrames) {
29 // printf("SinkFloat::read(,,%d)\n", numFrames);
30 float *floatData = (float *) data;
31 const int32_t channelCount = input.getSamplesPerFrame();
32
33 int32_t framesLeft = numFrames;
34 while (framesLeft > 0) {
35 // Run the graph and pull data through the input port.
36 int32_t framesPulled = pullData(framesLeft);
37 // printf("SinkFloat::read: framesLeft = %d, framesPulled = %d\n", framesLeft, framesPulled);
38 if (framesPulled <= 0) {
39 break;
40 }
41 const float *signal = input.getBuffer();
42 int32_t numSamples = framesPulled * channelCount;
43 memcpy(floatData, signal, numSamples * sizeof(float));
44 floatData += numSamples;
45 framesLeft -= framesPulled;
46 }
47 // printf("SinkFloat returning %d\n", numFrames - framesLeft);
48 return numFrames - framesLeft;
49 }
50