From f40bfc9267b13b54e6379dfe7539447662879d24 Mon Sep 17 00:00:00 2001 From: Sean Bartell Date: Sat, 25 Jun 2011 21:32:25 -0400 Subject: Add codecs to librbcodec. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97 Reviewed-on: http://gerrit.rockbox.org/137 Reviewed-by: Nils Wallménius Tested-by: Nils Wallménius --- apps/codecs/liba52/bitstream.c | 97 ------------------------------------------ 1 file changed, 97 deletions(-) delete mode 100644 apps/codecs/liba52/bitstream.c (limited to 'apps/codecs/liba52/bitstream.c') diff --git a/apps/codecs/liba52/bitstream.c b/apps/codecs/liba52/bitstream.c deleted file mode 100644 index 155368f..0000000 --- a/apps/codecs/liba52/bitstream.c +++ /dev/null @@ -1,97 +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 "config-a52.h" - -#include - -#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); - bitstream_get_2 (state, 0); /* pretend function is used - keep gcc happy */ -} - -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; -} -- cgit v1.1