diff options
Diffstat (limited to 'media/libstagefright/mpeg2ts/ABitReader.h')
-rw-r--r-- | media/libstagefright/mpeg2ts/ABitReader.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/media/libstagefright/mpeg2ts/ABitReader.h b/media/libstagefright/mpeg2ts/ABitReader.h new file mode 100644 index 0000000..5135211 --- /dev/null +++ b/media/libstagefright/mpeg2ts/ABitReader.h @@ -0,0 +1,53 @@ +/* + * 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_ |