mirror of https://github.com/VDR4Arch/vdr.git
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/*
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* bitstream.h
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*
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* Copyright (C) Aaron Holtzman - Dec 1999
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*
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* This file is part of ac3dec, a free AC-3 audio decoder
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*
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* ac3dec is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* ac3dec is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <inttypes.h>
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extern uint32_t bits_left;
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extern uint64_t current_word;
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void bitstream_init(uint8_t *start);
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inline uint32_t bitstream_get_bh(uint32_t num_bits);
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static inline uint32_t bitstream_get (uint32_t num_bits)
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{
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uint32_t result;
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if (num_bits < bits_left) {
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result = (current_word << (64 - bits_left)) >> (64 - num_bits);
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bits_left -= num_bits;
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return result;
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}
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return bitstream_get_bh (num_bits);
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}
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