diff options
Diffstat (limited to 'openjpeg/src/lib/openjp3d/raw.c')
| -rw-r--r-- | openjpeg/src/lib/openjp3d/raw.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/openjpeg/src/lib/openjp3d/raw.c b/openjpeg/src/lib/openjp3d/raw.c new file mode 100644 index 000000000..7f6a3ad51 --- /dev/null +++ b/openjpeg/src/lib/openjp3d/raw.c @@ -0,0 +1,91 @@ +/* + * The copyright in this software is being made available under the 2-clauses + * BSD License, included below. This software may be subject to other third + * party and contributor rights, including patent rights, and no such rights + * are granted under this license. + * + * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe + * Copyright (c) 2005, Herve Drolon, FreeImage Team + * Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium + * 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() { + 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; +} + |