| 0,0 → 1,87 |
|---|
| /* |
| * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium |
| * Copyright (c) 2002-2007, Professor Benoit Macq |
| * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe |
| * Copyright (c) 2005, Herve Drolon, FreeImage Team |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "opj_includes.h" |
| |
| /* |
| ========================================================== |
| local functions |
| ========================================================== |
| */ |
| |
| |
| /* |
| ========================================================== |
| RAW encoding interface |
| ========================================================== |
| */ |
| |
| opj_raw_t* raw_create(void) { |
| opj_raw_t *raw = (opj_raw_t*)opj_malloc(sizeof(opj_raw_t)); |
| return raw; |
| } |
| |
| void raw_destroy(opj_raw_t *raw) { |
| if(raw) { |
| opj_free(raw); |
| } |
| } |
| |
| int raw_numbytes(opj_raw_t *raw) { |
| return raw->bp - raw->start; |
| } |
| |
| void raw_init_dec(opj_raw_t *raw, unsigned char *bp, int len) { |
| raw->start = bp; |
| raw->lenmax = len; |
| raw->len = 0; |
| raw->c = 0; |
| raw->ct = 0; |
| } |
| |
| int raw_decode(opj_raw_t *raw) { |
| int d; |
| if (raw->ct == 0) { |
| raw->ct = 8; |
| if (raw->len == raw->lenmax) { |
| raw->c = 0xff; |
| } else { |
| if (raw->c == 0xff) { |
| raw->ct = 7; |
| } |
| raw->c = *(raw->start + raw->len); |
| raw->len++; |
| } |
| } |
| raw->ct--; |
| d = (raw->c >> raw->ct) & 0x01; |
| |
| return d; |
| } |
| |