xref: /aosp_15_r20/external/oboe/src/common/SourceI32Caller.cpp (revision 05767d913155b055644481607e6fa1e35e2fe72c)
1*05767d91SRobert Wu /*
2*05767d91SRobert Wu  * Copyright 2019 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 #include "flowgraph/FlowGraphNode.h"
20*05767d91SRobert Wu #include "SourceI32Caller.h"
21*05767d91SRobert Wu 
22*05767d91SRobert Wu #if FLOWGRAPH_ANDROID_INTERNAL
23*05767d91SRobert Wu #include <audio_utils/primitives.h>
24*05767d91SRobert Wu #endif
25*05767d91SRobert Wu 
26*05767d91SRobert Wu using namespace oboe;
27*05767d91SRobert Wu using namespace flowgraph;
28*05767d91SRobert Wu 
onProcess(int32_t numFrames)29*05767d91SRobert Wu int32_t SourceI32Caller::onProcess(int32_t numFrames) {
30*05767d91SRobert Wu     int32_t numBytes = mStream->getBytesPerFrame() * numFrames;
31*05767d91SRobert Wu     int32_t bytesRead = mBlockReader.read((uint8_t *) mConversionBuffer.get(), numBytes);
32*05767d91SRobert Wu     int32_t framesRead = bytesRead / mStream->getBytesPerFrame();
33*05767d91SRobert Wu 
34*05767d91SRobert Wu     float *floatData = output.getBuffer();
35*05767d91SRobert Wu     const int32_t *intData = mConversionBuffer.get();
36*05767d91SRobert Wu     int32_t numSamples = framesRead * output.getSamplesPerFrame();
37*05767d91SRobert Wu 
38*05767d91SRobert Wu #if FLOWGRAPH_ANDROID_INTERNAL
39*05767d91SRobert Wu     memcpy_to_float_from_i32(floatData, shortData, numSamples);
40*05767d91SRobert Wu #else
41*05767d91SRobert Wu     for (int i = 0; i < numSamples; i++) {
42*05767d91SRobert Wu         *floatData++ = *intData++ * kScale;
43*05767d91SRobert Wu     }
44*05767d91SRobert Wu #endif
45*05767d91SRobert Wu 
46*05767d91SRobert Wu     return framesRead;
47*05767d91SRobert Wu }
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