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-rw-r--r--third_party/libopenjpeg20/bio.c191
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diff --git a/third_party/libopenjpeg20/bio.c b/third_party/libopenjpeg20/bio.c
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--- a/third_party/libopenjpeg20/bio.c
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-/*
- * 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) 2002-2014, Universite catholique de Louvain (UCL), Belgium
- * Copyright (c) 2002-2014, Professor Benoit Macq
- * Copyright (c) 2001-2003, David Janssens
- * Copyright (c) 2002-2003, Yannick Verschueren
- * Copyright (c) 2003-2007, Francois-Olivier Devaux
- * Copyright (c) 2003-2014, 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 opj_bio_putbit(opj_bio_t *bio, OPJ_UINT32 b);
-/**
-Read a bit
-@param bio BIO handle
-@return Returns the read bit
-*/
-static OPJ_UINT32 opj_bio_getbit(opj_bio_t *bio);
-/**
-Write a byte
-@param bio BIO handle
-@return Returns OPJ_TRUE if successful, returns OPJ_FALSE otherwise
-*/
-static OPJ_BOOL opj_bio_byteout(opj_bio_t *bio);
-/**
-Read a byte
-@param bio BIO handle
-@return Returns OPJ_TRUE if successful, returns OPJ_FALSE otherwise
-*/
-static OPJ_BOOL opj_bio_bytein(opj_bio_t *bio);
-
-/*@}*/
-
-/*@}*/
-
-/*
-==========================================================
- local functions
-==========================================================
-*/
-
-OPJ_BOOL opj_bio_byteout(opj_bio_t *bio) {
- bio->buf = (bio->buf << 8) & 0xffff;
- bio->ct = bio->buf == 0xff00 ? 7 : 8;
- if ((OPJ_SIZE_T)bio->bp >= (OPJ_SIZE_T)bio->end) {
- return OPJ_FALSE;
- }
- *bio->bp++ = (OPJ_BYTE)(bio->buf >> 8);
- return OPJ_TRUE;
-}
-
-OPJ_BOOL opj_bio_bytein(opj_bio_t *bio) {
- bio->buf = (bio->buf << 8) & 0xffff;
- bio->ct = bio->buf == 0xff00 ? 7 : 8;
- if ((OPJ_SIZE_T)bio->bp >= (OPJ_SIZE_T)bio->end) {
- return OPJ_FALSE;
- }
- bio->buf |= *bio->bp++;
- return OPJ_TRUE;
-}
-
-void opj_bio_putbit(opj_bio_t *bio, OPJ_UINT32 b) {
- if (bio->ct == 0) {
- opj_bio_byteout(bio); /* MSD: why not check the return value of this function ? */
- }
- bio->ct--;
- bio->buf |= b << bio->ct;
-}
-
-OPJ_UINT32 opj_bio_getbit(opj_bio_t *bio) {
- if (bio->ct == 0) {
- opj_bio_bytein(bio); /* MSD: why not check the return value of this function ? */
- }
- bio->ct--;
- return (bio->buf >> bio->ct) & 1;
-}
-
-/*
-==========================================================
- Bit Input/Output interface
-==========================================================
-*/
-
-opj_bio_t* opj_bio_create(void) {
- opj_bio_t *bio = (opj_bio_t*)opj_malloc(sizeof(opj_bio_t));
- return bio;
-}
-
-void opj_bio_destroy(opj_bio_t *bio) {
- if(bio) {
- opj_free(bio);
- }
-}
-
-ptrdiff_t opj_bio_numbytes(opj_bio_t *bio) {
- return (bio->bp - bio->start);
-}
-
-void opj_bio_init_enc(opj_bio_t *bio, OPJ_BYTE *bp, OPJ_UINT32 len) {
- bio->start = bp;
- bio->end = bp + len;
- bio->bp = bp;
- bio->buf = 0;
- bio->ct = 8;
-}
-
-void opj_bio_init_dec(opj_bio_t *bio, OPJ_BYTE *bp, OPJ_UINT32 len) {
- bio->start = bp;
- bio->end = bp + len;
- bio->bp = bp;
- bio->buf = 0;
- bio->ct = 0;
-}
-
-void opj_bio_write(opj_bio_t *bio, OPJ_UINT32 v, OPJ_UINT32 n) {
- OPJ_UINT32 i;
- for (i = n - 1; i < n; i--) {
- opj_bio_putbit(bio, (v >> i) & 1);
- }
-}
-
-OPJ_UINT32 opj_bio_read(opj_bio_t *bio, OPJ_UINT32 n) {
- OPJ_UINT32 i;
- OPJ_UINT32 v;
- v = 0;
- for (i = n - 1; i < n; i--) {
- v += opj_bio_getbit(bio) << i;
- }
- return v;
-}
-
-OPJ_BOOL opj_bio_flush(opj_bio_t *bio) {
- if (! opj_bio_byteout(bio)) {
- return OPJ_FALSE;
- }
- if (bio->ct == 7) {
- if (! opj_bio_byteout(bio)) {
- return OPJ_FALSE;
- }
- }
- return OPJ_TRUE;
-}
-
-OPJ_BOOL opj_bio_inalign(opj_bio_t *bio) {
- if ((bio->buf & 0xff) == 0xff) {
- if (! opj_bio_bytein(bio)) {
- return OPJ_FALSE;
- }
- }
- bio->ct = 0;
- return OPJ_TRUE;
-}