84 lines
2.4 KiB
C++
Vendored
84 lines
2.4 KiB
C++
Vendored
/*
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* Copyright 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef OBOE_AUDIO_SOURCE_CALLER_H
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#define OBOE_AUDIO_SOURCE_CALLER_H
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#include "oboe_common_OboeDebug_android.h"
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#include "oboe_oboe_Oboe_android.h"
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#include "oboe_flowgraph_FlowGraphNode_android.h"
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#include "oboe_common_FixedBlockReader_android.h"
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namespace oboe {
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class AudioStreamCallback;
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class AudioStream;
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/**
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* For output streams that use a callback, call the application for more data.
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* For input streams that do not use a callback, read from the stream.
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*/
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class AudioSourceCaller : public flowgraph::FlowGraphSource, public FixedBlockProcessor {
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public:
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AudioSourceCaller(int32_t channelCount, int32_t framesPerCallback, int32_t bytesPerSample)
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: FlowGraphSource(channelCount)
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, mBlockReader(*this) {
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mBlockReader.open(channelCount * framesPerCallback * bytesPerSample);
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}
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/**
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* Set the stream to use as a source of data.
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* @param stream
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*/
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void setStream(oboe::AudioStream *stream) {
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mStream = stream;
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}
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oboe::AudioStream *getStream() {
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return mStream;
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}
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/**
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* Timeout value to use when calling audioStream->read().
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* @param timeoutNanos Zero for no timeout or time in nanoseconds.
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*/
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void setTimeoutNanos(int64_t timeoutNanos) {
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mTimeoutNanos = timeoutNanos;
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}
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int64_t getTimeoutNanos() const {
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return mTimeoutNanos;
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}
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/**
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* Called internally for block size adaptation.
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* @param buffer
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* @param numBytes
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* @return
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*/
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int32_t onProcessFixedBlock(uint8_t *buffer, int32_t numBytes) override;
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protected:
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oboe::AudioStream *mStream = nullptr;
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int64_t mTimeoutNanos = 0;
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FixedBlockReader mBlockReader;
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};
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}
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#endif //OBOE_AUDIO_SOURCE_CALLER_H
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