-/*\r
- * Copyright (c) 2004, Yannick Verschueren\r
- * Copyright (c) 2005, Hervé Drolon, FreeImage Team\r
- * Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium\r
- * All rights reserved.\r
- *\r
- * Redistribution and use in source and binary forms, with or without\r
- * modification, are permitted provided that the following conditions\r
- * are met:\r
- * 1. Redistributions of source code must retain the above copyright\r
- * notice, this list of conditions and the following disclaimer.\r
- * 2. Redistributions in binary form must reproduce the above copyright\r
- * notice, this list of conditions and the following disclaimer in the\r
- * documentation and/or other materials provided with the distribution.\r
- *\r
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'\r
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE\r
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\r
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\r
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS\r
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN\r
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)\r
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\r
- * POSSIBILITY OF SUCH DAMAGE.\r
- */\r
-\r
-#include "opj_includes.h"\r
-\r
-/*\r
- * Read the information contains in VBAS [JPP/JPT stream message header]\r
- * Store information (7 bits) in value\r
- *\r
- */\r
-unsigned int jpt_read_VBAS_info(opj_cio_t *cio, unsigned int value) {\r
- unsigned char elmt;\r
-\r
- elmt = cio_read(cio, 1);\r
- while ((elmt >> 7) == 1) {\r
- value = (value << 7);\r
- value |= (elmt & 0x7f);\r
- elmt = cio_read(cio, 1);\r
- }\r
- value = (value << 7);\r
- value |= (elmt & 0x7f);\r
-\r
- return value;\r
-}\r
-\r
-/*\r
- * Initialize the value of the message header structure \r
- *\r
- */\r
-void jpt_init_msg_header(opj_jpt_msg_header_t * header) {\r
- header->Id = 0; /* In-class Identifier */\r
- header->last_byte = 0; /* Last byte information */\r
- header->Class_Id = 0; /* Class Identifier */\r
- header->CSn_Id = 0; /* CSn : index identifier */\r
- header->Msg_offset = 0; /* Message offset */\r
- header->Msg_length = 0; /* Message length */\r
- header->Layer_nb = 0; /* Auxiliary for JPP case */\r
-}\r
-\r
-/*\r
- * Re-initialize the value of the message header structure\r
- *\r
- * Only parameters always present in message header\r
- *\r
- */\r
-void jpt_reinit_msg_header(opj_jpt_msg_header_t * header) {\r
- header->Id = 0; /* In-class Identifier */\r
- header->last_byte = 0; /* Last byte information */\r
- header->Msg_offset = 0; /* Message offset */\r
- header->Msg_length = 0; /* Message length */\r
-}\r
-\r
-/*\r
- * Read the message header for a JPP/JPT - stream\r
- *\r
- */\r
-void jpt_read_msg_header(opj_common_ptr cinfo, opj_cio_t *cio, opj_jpt_msg_header_t *header) {\r
- unsigned char elmt, Class = 0, CSn = 0;\r
- jpt_reinit_msg_header(header);\r
-\r
- /* ------------- */\r
- /* VBAS : Bin-ID */\r
- /* ------------- */\r
- elmt = cio_read(cio, 1);\r
-\r
- /* See for Class and CSn */\r
- switch ((elmt >> 5) & 0x03) {\r
- case 0:\r
- opj_event_msg(cinfo, EVT_ERROR, "Forbidden value encounter in message header !!\n");\r
- break;\r
- case 1:\r
- Class = 0;\r
- CSn = 0;\r
- break;\r
- case 2:\r
- Class = 1;\r
- CSn = 0;\r
- break;\r
- case 3:\r
- Class = 1;\r
- CSn = 1;\r
- break;\r
- default:\r
- break;\r
- }\r
-\r
- /* see information on bits 'c' [p 10 : A.2.1 general, ISO/IEC FCD 15444-9] */\r
- if (((elmt >> 4) & 0x01) == 1)\r
- header->last_byte = 1;\r
-\r
- /* In-class identifier */\r
- header->Id |= (elmt & 0x0f);\r
- if ((elmt >> 7) == 1)\r
- header->Id = jpt_read_VBAS_info(cio, header->Id);\r
-\r
- /* ------------ */\r
- /* VBAS : Class */\r
- /* ------------ */\r
- if (Class == 1) {\r
- header->Class_Id = 0;\r
- header->Class_Id = jpt_read_VBAS_info(cio, header->Class_Id);\r
- }\r
-\r
- /* ---------- */\r
- /* VBAS : CSn */\r
- /* ---------- */\r
- if (CSn == 1) {\r
- header->CSn_Id = 0;\r
- header->CSn_Id = jpt_read_VBAS_info(cio, header->CSn_Id);\r
- }\r
-\r
- /* ----------------- */\r
- /* VBAS : Msg_offset */\r
- /* ----------------- */\r
- header->Msg_offset = jpt_read_VBAS_info(cio, header->Msg_offset);\r
-\r
- /* ----------------- */\r
- /* VBAS : Msg_length */\r
- /* ----------------- */\r
- header->Msg_length = jpt_read_VBAS_info(cio, header->Msg_length);\r
-\r
- /* ---------- */\r
- /* VBAS : Aux */\r
- /* ---------- */\r
- if ((header->Class_Id & 0x01) == 1) {\r
- header->Layer_nb = 0;\r
- header->Layer_nb = jpt_read_VBAS_info(cio, header->Layer_nb);\r
- }\r
-}\r
+/*
+ * Copyright (c) 2004, Yannick Verschueren
+ * Copyright (c) 2005, Hervé 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"
+
+/*
+ * 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);
+ }
+}
git://git.creatis.insa-lyon.fr / gdcm.git / blobdiff