mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-14 06:57:27 +01:00
68 lines
2.0 KiB
C++
Vendored
68 lines
2.0 KiB
C++
Vendored
/*
|
|
* Copyright (C) 2017 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef AAUDIO_FIXED_BLOCK_ADAPTER_H
|
|
#define AAUDIO_FIXED_BLOCK_ADAPTER_H
|
|
|
|
#include <memory>
|
|
#include <stdint.h>
|
|
#include <sys/types.h>
|
|
|
|
/**
|
|
* Interface for a class that needs fixed-size blocks.
|
|
*/
|
|
class FixedBlockProcessor {
|
|
public:
|
|
virtual ~FixedBlockProcessor() = default;
|
|
/**
|
|
*
|
|
* @param buffer Pointer to first byte of data.
|
|
* @param numBytes This will be a fixed size specified in FixedBlockAdapter::open().
|
|
* @return Number of bytes processed or a negative error code.
|
|
*/
|
|
virtual int32_t onProcessFixedBlock(uint8_t *buffer, int32_t numBytes) = 0;
|
|
};
|
|
|
|
/**
|
|
* Base class for a variable-to-fixed-size block adapter.
|
|
*/
|
|
class FixedBlockAdapter
|
|
{
|
|
public:
|
|
FixedBlockAdapter(FixedBlockProcessor &fixedBlockProcessor)
|
|
: mFixedBlockProcessor(fixedBlockProcessor) {}
|
|
|
|
virtual ~FixedBlockAdapter();
|
|
|
|
/**
|
|
* Allocate internal resources needed for buffering data.
|
|
*/
|
|
virtual int32_t open(int32_t bytesPerFixedBlock);
|
|
|
|
/**
|
|
* Free internal resources.
|
|
*/
|
|
int32_t close();
|
|
|
|
protected:
|
|
FixedBlockProcessor &mFixedBlockProcessor;
|
|
std::unique_ptr<uint8_t[]> mStorage; // Store data here while assembling buffers.
|
|
int32_t mSize = 0; // Size in bytes of the fixed size buffer.
|
|
int32_t mPosition = 0; // Offset of the last byte read or written.
|
|
};
|
|
|
|
#endif /* AAUDIO_FIXED_BLOCK_ADAPTER_H */
|