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Diffstat (limited to 'image/codecs/indeo/get_bits.h')
-rw-r--r-- | image/codecs/indeo/get_bits.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/image/codecs/indeo/get_bits.h b/image/codecs/indeo/get_bits.h new file mode 100644 index 0000000000..359d8fcab0 --- /dev/null +++ b/image/codecs/indeo/get_bits.h @@ -0,0 +1,63 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#ifndef IMAGE_CODECS_INDEO_GET_BITS_H +#define IMAGE_CODECS_INDEO_GET_BITS_H + +#include "common/bitstream.h" + +namespace Image { +namespace Indeo { + +/** + * Intel Indeo Bitstream reader + */ +class GetBits : public Common::BitStream8LSB { +public: + /** + * Constructor + * @param stream Source stream to reader from + * @param disposeAfterUse Whether to destroy stream in destructor + */ + GetBits(Common::SeekableReadStream *stream, DisposeAfterUse::Flag disposeAfterUse + = DisposeAfterUse::YES) : Common::BitStream8LSB(stream, disposeAfterUse) {} + + /** + * The number of bits left + */ + int getBitsLeft() const { return size() - pos(); } + + /** + * Parse a VLC code. + * @param bits is the number of bits which will be read at once, must be + * identical to nbBits in init_vlc() + * @param maxDepth is the number of times bits bits must be read to completely + * read the longest vlc code + * = (max_vlc_length + bits - 1) / bits + */ + int getVLC2(int16 (*table)[2], int bits, int maxDepth); +}; + +} // End of namespace Indeo +} // End of namespace Image + +#endif |