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/*
* Copyright (C) 2010 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 A_BIT_READER_H_
#define A_BIT_READER_H_
#include <media/stagefright/foundation/ABase.h>
#include <sys/types.h>
#include <stdint.h>
namespace android {
struct ABitReader {
ABitReader(const uint8_t *data, size_t size);
uint32_t getBits(size_t n);
void skipBits(size_t n);
size_t numBitsLeft() const;
const uint8_t *data() const;
private:
const uint8_t *mData;
size_t mSize;
uint32_t mReservoir; // left-aligned bits
size_t mNumBitsLeft;
void fillReservoir();
void putBits(uint32_t x, size_t n);
DISALLOW_EVIL_CONSTRUCTORS(ABitReader);
};
} // namespace android
#endif // A_BIT_READER_H_
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