1 files changed, 187 insertions, 0 deletions

diff --git a/libraries/openjpeg-libsl/libopenjpeg/bio.c b/libraries/openjpeg-libsl/libopenjpeg/bio.c
new file mode 100644
index 0000000..2a305a7
--- /dev/null
+++ b/libraries/openjpeg-libsl/libopenjpeg/bio.c
@@ -0,0 +1,187 @@
+/*
+ * 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, 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++ = 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, 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() {
+        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 (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;
+}