d8cf2960d0
Bring in changes to audio flinger made to support timed audio tracks and HW master volume control. Change-Id: Ide52d48809bdbed13acf35fd59b24637e35064ae Signed-off-by: John Grossman <johngro@google.com>
57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
/*
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* Copyright (C) 2007 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 ANDROID_AUDIO_BUFFER_PROVIDER_H
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#define ANDROID_AUDIO_BUFFER_PROVIDER_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <utils/Errors.h>
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namespace android {
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// ----------------------------------------------------------------------------
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class AudioBufferProvider
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{
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public:
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struct Buffer {
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union {
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void* raw;
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short* i16;
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int8_t* i8;
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};
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size_t frameCount;
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};
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virtual ~AudioBufferProvider() {}
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// value representing an invalid presentation timestamp
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static const int64_t kInvalidPTS;
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// pts is the local time when the next sample yielded by getNextBuffer
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// will be rendered.
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// Pass kInvalidPTS if the PTS is unknown or not applicable.
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virtual status_t getNextBuffer(Buffer* buffer, int64_t pts) = 0;
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virtual void releaseBuffer(Buffer* buffer) = 0;
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};
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// ----------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_AUDIO_BUFFER_PROVIDER_H
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