X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fsynfig_0_61_03%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Fliba52%2Fbitstream.c;fp=synfig-core%2Ftags%2Fsynfig_0_61_03%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Fliba52%2Fbitstream.c;h=0000000000000000000000000000000000000000;hb=3a6643238c67c043fc3592837a05d6d2861967f1;hp=89b69cff03559d10379fe81fe6c703de4de9e809;hpb=47fce282611fbba1044921d22ca887f9b53ad91a;p=synfig.git diff --git a/synfig-core/tags/synfig_0_61_03/synfig-core/src/modules/mod_libavcodec/libavcodec/liba52/bitstream.c b/synfig-core/tags/synfig_0_61_03/synfig-core/src/modules/mod_libavcodec/libavcodec/liba52/bitstream.c deleted file mode 100644 index 89b69cf..0000000 --- a/synfig-core/tags/synfig_0_61_03/synfig-core/src/modules/mod_libavcodec/libavcodec/liba52/bitstream.c +++ /dev/null @@ -1,91 +0,0 @@ -/* - * bitstream.c - * Copyright (C) 2000-2003 Michel Lespinasse - * Copyright (C) 1999-2000 Aaron Holtzman - * - * 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 - */ -#include "a52.h" -#include "a52_internal.h" -#include "bitstream.h" - -#define BUFFER_SIZE 4096 - -void a52_bitstream_set_ptr (a52_state_t * state, uint8_t * buf) -{ - int align; - - align = (long)buf & 3; - state->buffer_start = (uint32_t *) (buf - align); - state->bits_left = 0; - state->current_word = 0; - bitstream_get (state, align * 8); -} - -static inline void bitstream_fill_current (a52_state_t * state) -{ - uint32_t tmp; - - tmp = *(state->buffer_start++); - state->current_word = swab32 (tmp); -} - -/* - * The fast paths for _get is in the - * bitstream.h header file so it can be inlined. - * - * The "bottom half" of this routine is suffixed _bh - * - * -ah - */ - -uint32_t a52_bitstream_get_bh (a52_state_t * state, uint32_t num_bits) -{ - uint32_t result; - - num_bits -= state->bits_left; - result = ((state->current_word << (32 - state->bits_left)) >> - (32 - state->bits_left)); - - bitstream_fill_current (state); - - if (num_bits != 0) - result = (result << num_bits) | (state->current_word >> (32 - num_bits)); - - state->bits_left = 32 - num_bits; - - return result; -} - -int32_t a52_bitstream_get_bh_2 (a52_state_t * state, uint32_t num_bits) -{ - int32_t result; - - num_bits -= state->bits_left; - result = ((((int32_t)state->current_word) << (32 - state->bits_left)) >> - (32 - state->bits_left)); - - bitstream_fill_current(state); - - if (num_bits != 0) - result = (result << num_bits) | (state->current_word >> (32 - num_bits)); - - state->bits_left = 32 - num_bits; - - return result; -}