+++ /dev/null
-/*
- * bitstream.h
- * Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
- * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
- *
- * This file is part of a52dec, a free ATSC A-52 stream decoder.
- * See http://liba52.sourceforge.net/ for updates.
- *
- * a52dec 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.
- *
- * a52dec 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/* (stolen from the kernel) */
-#ifdef WORDS_BIGENDIAN
-
-# define swab32(x) (x)
-
-#else
-
-# if 0 && defined (__i386__)
-
-# define swab32(x) __i386_swab32(x)
- static inline const uint32_t __i386_swab32(uint32_t x)
- {
- __asm__("bswap %0" : "=r" (x) : "0" (x));
- return x;
- }
-
-# else
-
-# define swab32(x)\
-((((uint8_t*)&x)[0] << 24) | (((uint8_t*)&x)[1] << 16) | \
- (((uint8_t*)&x)[2] << 8) | (((uint8_t*)&x)[3]))
-
-# endif
-#endif
-
-extern uint32_t a52_bits_left;
-extern uint32_t a52_current_word;
-
-void a52_bitstream_set_ptr (uint8_t * buf);
-uint32_t a52_bitstream_get_bh(uint32_t num_bits);
-int32_t a52_bitstream_get_bh_2(uint32_t num_bits);
-
-static inline uint32_t
-bitstream_get(uint32_t num_bits)
-{
- uint32_t result;
-
- if(num_bits < a52_bits_left) {
- result = (a52_current_word << (32u - a52_bits_left)) >> (32u - num_bits);
- a52_bits_left -= num_bits;
- return result;
- }
-
- return a52_bitstream_get_bh(num_bits);
-}
-
-static inline int32_t
-bitstream_get_2(uint32_t num_bits)
-{
- int32_t result;
-
- if(num_bits < a52_bits_left) {
- result = (((int32_t)a52_current_word) << (32u - a52_bits_left)) >> (32u - num_bits);
- a52_bits_left -= num_bits;
- return result;
- }
-
- return a52_bitstream_get_bh_2(num_bits);
-}