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https://github.com/hajimehoshi/ebiten.git
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61 lines
1.9 KiB
C++
Vendored
61 lines
1.9 KiB
C++
Vendored
/*
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* Copyright (C) 2017 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 AAUDIO_FIXED_BLOCK_READER_H
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#define AAUDIO_FIXED_BLOCK_READER_H
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#include <stdint.h>
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#include "oboe_common_FixedBlockAdapter_android.h"
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/**
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* Read from a fixed-size block to a variable sized block.
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*
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* This can be used to convert a pull data flow from fixed sized buffers to variable sized buffers.
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* An example would be an audio output callback that reads from the app.
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*/
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class FixedBlockReader : public FixedBlockAdapter
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{
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public:
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FixedBlockReader(FixedBlockProcessor &fixedBlockProcessor);
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virtual ~FixedBlockReader() = default;
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int32_t open(int32_t bytesPerFixedBlock) override;
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/**
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* Read into a variable sized block.
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*
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* Note that if the fixed-sized blocks must be aligned, then the variable-sized blocks
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* must have the same alignment.
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* For example, if the fixed-size blocks must be a multiple of 8, then the variable-sized
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* blocks must also be a multiple of 8.
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*
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* @param buffer
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* @param numBytes
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* @return Number of bytes read or a negative error code.
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*/
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int32_t read(uint8_t *buffer, int32_t numBytes);
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private:
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int32_t readFromStorage(uint8_t *buffer, int32_t numBytes);
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int32_t mValid = 0; // Number of valid bytes in mStorage.
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};
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#endif /* AAUDIO_FIXED_BLOCK_READER_H */
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