BitStreamerMSB.h

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/*
    RawSpeed - RAW file decoder.
 
    Copyright (C) 2017 Axel Waggershauser
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
 
    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.
 
    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
 
#pragma once
 
#include "bitstreams/BitStreamMSB.h"
#include "bitstreams/BitStreamer.h"
#include <cstdint>
 
namespace rawspeed {
 
class BitStreamerMSB;
 
template <> struct BitStreamerTraits<BitStreamerMSB> final {
  static constexpr BitOrder Tag = BitOrder::MSB;
 
  static constexpr bool canUseWithPrefixCodeDecoder = true;
 
  // How many bytes can we read from the input per each fillCache(), at most?
  static constexpr int MaxProcessBytes = 4;
  static_assert(MaxProcessBytes == sizeof(uint32_t));
};
 
// The MSB data is ordered in MSB bit order,
// i.e. we push into the cache from the right and read it from the left
class BitStreamerMSB final : public BitStreamer<BitStreamerMSB> {
  using Base = BitStreamer<BitStreamerMSB>;
 
public:
  using Base::Base;
};
 
} // namespace rawspeed