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Diffstat (limited to 'extern/libopenjpeg/bio.c')
| -rw-r--r-- | extern/libopenjpeg/bio.c | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/extern/libopenjpeg/bio.c b/extern/libopenjpeg/bio.c deleted file mode 100644 index f04f3e503fb..00000000000 --- a/extern/libopenjpeg/bio.c +++ /dev/null @@ -1,187 +0,0 @@ -/* - * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium - * Copyright (c) 2002-2007, Professor Benoit Macq - * Copyright (c) 2001-2003, David Janssens - * Copyright (c) 2002-2003, Yannick Verschueren - * 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" - -/** @defgroup BIO BIO - Individual bit input-output stream */ -/*@{*/ - -/** @name Local static functions */ -/*@{*/ - -/** -Write a bit -@param bio BIO handle -@param b Bit to write (0 or 1) -*/ -static void bio_putbit(opj_bio_t *bio, unsigned int b); -/** -Read a bit -@param bio BIO handle -@return Returns the read bit -*/ -static int bio_getbit(opj_bio_t *bio); -/** -Write a byte -@param bio BIO handle -@return Returns 0 if successful, returns 1 otherwise -*/ -static int bio_byteout(opj_bio_t *bio); -/** -Read a byte -@param bio BIO handle -@return Returns 0 if successful, returns 1 otherwise -*/ -static int bio_bytein(opj_bio_t *bio); - -/*@}*/ - -/*@}*/ - -/* -========================================================== - local functions -========================================================== -*/ - -static int bio_byteout(opj_bio_t *bio) { - bio->buf = (bio->buf << 8) & 0xffff; - bio->ct = bio->buf == 0xff00 ? 7 : 8; - if (bio->bp >= bio->end) { - return 1; - } - *bio->bp++ = (unsigned char)(bio->buf >> 8); - return 0; -} - -static int bio_bytein(opj_bio_t *bio) { - bio->buf = (bio->buf << 8) & 0xffff; - bio->ct = bio->buf == 0xff00 ? 7 : 8; - if (bio->bp >= bio->end) { - return 1; - } - bio->buf |= *bio->bp++; - return 0; -} - -static void bio_putbit(opj_bio_t *bio, unsigned int b) { - if (bio->ct == 0) { - bio_byteout(bio); - } - bio->ct--; - bio->buf |= b << bio->ct; -} - -static int bio_getbit(opj_bio_t *bio) { - if (bio->ct == 0) { - bio_bytein(bio); - } - bio->ct--; - return (bio->buf >> bio->ct) & 1; -} - -/* -========================================================== - Bit Input/Output interface -========================================================== -*/ - -opj_bio_t* bio_create(void) { - opj_bio_t *bio = (opj_bio_t*)opj_malloc(sizeof(opj_bio_t)); - return bio; -} - -void bio_destroy(opj_bio_t *bio) { - if(bio) { - opj_free(bio); - } -} - -int bio_numbytes(opj_bio_t *bio) { - return (int)(bio->bp - bio->start); -} - -void bio_init_enc(opj_bio_t *bio, unsigned char *bp, int len) { - bio->start = bp; - bio->end = bp + len; - bio->bp = bp; - bio->buf = 0; - bio->ct = 8; -} - -void bio_init_dec(opj_bio_t *bio, unsigned char *bp, int len) { - bio->start = bp; - bio->end = bp + len; - bio->bp = bp; - bio->buf = 0; - bio->ct = 0; -} - -void bio_write(opj_bio_t *bio, int v, int n) { - int i; - for (i = n - 1; i >= 0; i--) { - bio_putbit(bio, (v >> i) & 1); - } -} - -int bio_read(opj_bio_t *bio, int n) { - int i, v; - v = 0; - for (i = n - 1; i >= 0; i--) { - v += bio_getbit(bio) << i; - } - return v; -} - -int bio_flush(opj_bio_t *bio) { - bio->ct = 0; - if (bio_byteout(bio)) { - return 1; - } - if (bio->ct == 7) { - bio->ct = 0; - if (bio_byteout(bio)) { - return 1; - } - } - return 0; -} - -int bio_inalign(opj_bio_t *bio) { - bio->ct = 0; - if ((bio->buf & 0xff) == 0xff) { - if (bio_bytein(bio)) { - return 1; - } - bio->ct = 0; - } - return 0; -} |