1 files changed, 155 insertions, 0 deletions

diff --git a/libraries/openjpeg-libsl/libopenjpeg/jpt.c b/libraries/openjpeg-libsl/libopenjpeg/jpt.c
new file mode 100644
index 0000000..a2566ea
--- /dev/null
+++ b/libraries/openjpeg-libsl/libopenjpeg/jpt.c
@@ -0,0 +1,155 @@
+/*
+ * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
+ * Copyright (c) 2002-2007, Professor Benoit Macq
+ * Copyright (c) 2002-2003, Yannick Verschueren
+ * 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"
+
+/*
+ * Read the information contains in VBAS [JPP/JPT stream message header]
+ * Store information (7 bits) in value
+ *
+ */
+unsigned int jpt_read_VBAS_info(opj_cio_t *cio, unsigned int value) {
+        unsigned char elmt;
+
+        elmt = cio_read(cio, 1);
+        while ((elmt >> 7) == 1) {
+                value = (value << 7);
+                value |= (elmt & 0x7f);
+                elmt = cio_read(cio, 1);
+        }
+        value = (value << 7);
+        value |= (elmt & 0x7f);
+
+        return value;
+}
+
+/*
+ * Initialize the value of the message header structure 
+ *
+ */
+void jpt_init_msg_header(opj_jpt_msg_header_t * header) {
+        header->Id = 0;         /* In-class Identifier    */
+        header->last_byte = 0;  /* Last byte information  */
+        header->Class_Id = 0;           /* Class Identifier       */
+        header->CSn_Id = 0;             /* CSn : index identifier */
+        header->Msg_offset = 0; /* Message offset         */
+        header->Msg_length = 0; /* Message length         */
+        header->Layer_nb = 0;           /* Auxiliary for JPP case */
+}
+
+/*
+ * Re-initialize the value of the message header structure
+ *
+ * Only parameters always present in message header
+ *
+ */
+void jpt_reinit_msg_header(opj_jpt_msg_header_t * header) {
+        header->Id = 0;         /* In-class Identifier    */
+        header->last_byte = 0;  /* Last byte information  */
+        header->Msg_offset = 0; /* Message offset         */
+        header->Msg_length = 0; /* Message length         */
+}
+
+/*
+ * Read the message header for a JPP/JPT - stream
+ *
+ */
+void jpt_read_msg_header(opj_common_ptr cinfo, opj_cio_t *cio, opj_jpt_msg_header_t *header) {
+        unsigned char elmt, Class = 0, CSn = 0;
+        jpt_reinit_msg_header(header);
+
+        /* ------------- */
+        /* VBAS : Bin-ID */
+        /* ------------- */
+        elmt = cio_read(cio, 1);
+
+        /* See for Class and CSn */
+        switch ((elmt >> 5) & 0x03) {
+                case 0:
+                        opj_event_msg(cinfo, EVT_ERROR, "Forbidden value encounter in message header !!\n");
+                        break;
+                case 1:
+                        Class = 0;
+                        CSn = 0;
+                        break;
+                case 2:
+                        Class = 1;
+                        CSn = 0;
+                        break;
+                case 3:
+                        Class = 1;
+                        CSn = 1;
+                        break;
+                default:
+                        break;
+        }
+
+        /* see information on bits 'c' [p 10 : A.2.1 general, ISO/IEC FCD 15444-9] */
+        if (((elmt >> 4) & 0x01) == 1)
+                header->last_byte = 1;
+
+        /* In-class identifier */
+        header->Id |= (elmt & 0x0f);
+        if ((elmt >> 7) == 1)
+                header->Id = jpt_read_VBAS_info(cio, header->Id);
+
+        /* ------------ */
+        /* VBAS : Class */
+        /* ------------ */
+        if (Class == 1) {
+                header->Class_Id = 0;
+                header->Class_Id = jpt_read_VBAS_info(cio, header->Class_Id);
+        }
+
+        /* ---------- */
+        /* VBAS : CSn */
+        /* ---------- */
+        if (CSn == 1) {
+                header->CSn_Id = 0;
+                header->CSn_Id = jpt_read_VBAS_info(cio, header->CSn_Id);
+        }
+
+        /* ----------------- */
+        /* VBAS : Msg_offset */
+        /* ----------------- */
+        header->Msg_offset = jpt_read_VBAS_info(cio, header->Msg_offset);
+
+        /* ----------------- */
+        /* VBAS : Msg_length */
+        /* ----------------- */
+        header->Msg_length = jpt_read_VBAS_info(cio, header->Msg_length);
+
+        /* ---------- */
+        /* VBAS : Aux */
+        /* ---------- */
+        if ((header->Class_Id & 0x01) == 1) {
+                header->Layer_nb = 0;
+                header->Layer_nb = jpt_read_VBAS_info(cio, header->Layer_nb);
+        }
+}