-/*\r
- * Copyright (c) 2001-2003, David Janssens\r
- * Copyright (c) 2002-2003, Yannick Verschueren\r
- * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe\r
- * Copyright (c) 2005, Herve 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
-\r
-opj_cio_t* OPJ_CALLCONV opj_cio_open(opj_common_ptr cinfo, unsigned char *buffer, int length) {\r
- opj_cp_t *cp = NULL;\r
- opj_cio_t *cio = (opj_cio_t*)opj_malloc(sizeof(opj_cio_t));\r
- if(!cio) return NULL;\r
- cio->cinfo = cinfo;\r
- if(buffer && length) {\r
- /* wrap a user buffer containing the encoded image */\r
- cio->openmode = OPJ_STREAM_READ;\r
- cio->buffer = buffer;\r
- cio->length = length;\r
- }\r
- else if(!buffer && !length && cinfo) {\r
- /* allocate a buffer for the encoded image */\r
- cio->openmode = OPJ_STREAM_WRITE;\r
- switch(cinfo->codec_format) {\r
- case CODEC_J3D:\r
- case CODEC_J2K:\r
- cp = ((opj_j3d_t*)cinfo->j3d_handle)->cp;\r
- break;\r
- default:\r
- opj_free(cio);\r
- return NULL;\r
- }\r
- cio->length = cp->tdx * cp->tdy * cp->tdz * cp->tw * cp->th * cp->tl * 4;\r
- cio->buffer = (unsigned char *)opj_malloc(cio->length);\r
- if(!cio->buffer) {\r
- opj_free(cio);\r
- return NULL;\r
- }\r
- }\r
- else {\r
- opj_free(cio);\r
- return NULL;\r
- }\r
-\r
- /* Initialize byte IO */\r
- cio->start = cio->buffer;\r
- cio->end = cio->buffer + cio->length;\r
- cio->bp = cio->buffer;\r
-\r
- return cio;\r
-}\r
-\r
-void OPJ_CALLCONV opj_cio_close(opj_cio_t *cio) {\r
- if(cio) {\r
- if(cio->openmode == OPJ_STREAM_WRITE) {\r
- /* destroy the allocated buffer */\r
- opj_free(cio->buffer);\r
- }\r
- /* destroy the cio */\r
- opj_free(cio);\r
- }\r
-}\r
-\r
-\r
-/* ----------------------------------------------------------------------- */\r
-\r
-/*\r
- * Get position in byte stream.\r
- */\r
-int OPJ_CALLCONV cio_tell(opj_cio_t *cio) {\r
- return cio->bp - cio->start;\r
-}\r
-\r
-/*\r
- * Set position in byte stream.\r
- *\r
- * pos : position, in number of bytes, from the beginning of the stream\r
- */\r
-void OPJ_CALLCONV cio_seek(opj_cio_t *cio, int pos) {\r
- cio->bp = cio->start + pos;\r
-}\r
-\r
-/*\r
- * Number of bytes left before the end of the stream.\r
- */\r
-int cio_numbytesleft(opj_cio_t *cio) {\r
- return cio->end - cio->bp;\r
-}\r
-\r
-/*\r
- * Get pointer to the current position in the stream.\r
- */\r
-unsigned char *cio_getbp(opj_cio_t *cio) {\r
- return cio->bp;\r
-}\r
-\r
-/*\r
- * Write a byte.\r
- */\r
-static bool cio_byteout(opj_cio_t *cio, unsigned char v) {\r
- if (cio->bp >= cio->end) {\r
- opj_event_msg(cio->cinfo, EVT_ERROR, "write error\n");\r
- return false;\r
- }\r
- *cio->bp++ = v;\r
- return true;\r
-}\r
-\r
-/*\r
- * Read a byte.\r
- */\r
-static unsigned char cio_bytein(opj_cio_t *cio) {\r
- if (cio->bp >= cio->end) {\r
- opj_event_msg(cio->cinfo, EVT_ERROR, "read error\n");\r
- return 0;\r
- }\r
- return *cio->bp++;\r
-}\r
-\r
-/*\r
- * Write some bytes.\r
- *\r
- * v : value to write\r
- * n : number of bytes to write\r
- */\r
-unsigned int cio_write(opj_cio_t *cio, unsigned int v, int n) {\r
- int i;\r
- for (i = n - 1; i >= 0; i--) {\r
- if( !cio_byteout(cio, (unsigned char) ((v >> (i << 3)) & 0xff)) )\r
- return 0;\r
- }\r
- return n;\r
-}\r
-\r
-/*\r
- * Read some bytes.\r
- *\r
- * n : number of bytes to read\r
- *\r
- * return : value of the n bytes read\r
- */\r
-unsigned int cio_read(opj_cio_t *cio, int n) {\r
- int i;\r
- unsigned int v;\r
- v = 0;\r
- for (i = n - 1; i >= 0; i--) {\r
- v += cio_bytein(cio) << (i << 3);\r
- }\r
- return v;\r
-}\r
-\r
-/* \r
- * Skip some bytes.\r
- *\r
- * n : number of bytes to skip\r
- */\r
-void cio_skip(opj_cio_t *cio, int n) {\r
- cio->bp += n;\r
-}\r
-\r
-/*\r
- * Write some bytes.\r
- *\r
- * v : value to write\r
- * n : number of bytes to write\r
- */\r
-int cio_write_int(opj_cio_t *cio, int v, int n) {\r
- int i;\r
- for (i = n - 1; i >= 0; i--) {\r
- if( !cio_byteout(cio, (char) ((v >> (i << 3)) & 0xff)) )\r
- return 0;\r
- }\r
- return n;\r
-}\r
-\r
-/*\r
- * Read some bytes.\r
- *\r
- * n : number of bytes to read\r
- *\r
- * return : value of the n bytes read\r
- */\r
-int cio_read_int(opj_cio_t *cio, int n) {\r
- int i;\r
- int v;\r
- v = 0;\r
- for (i = n - 1; i >= 0; i--) {\r
- v += cio_bytein(cio) << (i << 3);\r
- }\r
- return v;\r
-}\r
-\r
+/*
+ * 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) 2001-2003, David Janssens
+ * Copyright (c) 2002-2003, Yannick Verschueren
+ * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
+ * Copyright (c) 2005, Herve 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"
+
+/* ----------------------------------------------------------------------- */
+
+opj_cio_t* OPJ_CALLCONV opj_cio_open(opj_common_ptr cinfo,
+ unsigned char *buffer, int length)
+{
+ opj_cp_t *cp = NULL;
+ opj_cio_t *cio = (opj_cio_t*)opj_malloc(sizeof(opj_cio_t));
+ if (!cio) {
+ return NULL;
+ }
+ cio->cinfo = cinfo;
+ if (buffer && length) {
+ /* wrap a user buffer containing the encoded image */
+ cio->openmode = OPJ_STREAM_READ;
+ cio->buffer = buffer;
+ cio->length = length;
+ } else if (!buffer && !length && cinfo) {
+ /* allocate a buffer for the encoded image */
+ cio->openmode = OPJ_STREAM_WRITE;
+ switch (cinfo->codec_format) {
+ case CODEC_J3D:
+ case CODEC_J2K:
+ cp = ((opj_j3d_t*)cinfo->j3d_handle)->cp;
+ break;
+ default:
+ opj_free(cio);
+ return NULL;
+ }
+ cio->length = cp->tdx * cp->tdy * cp->tdz * cp->tw * cp->th * cp->tl * 4;
+ cio->buffer = (unsigned char *)opj_malloc(cio->length);
+ if (!cio->buffer) {
+ opj_event_msg(cio->cinfo, EVT_ERROR,
+ "Error allocating memory for compressed bitstream\n");
+ opj_free(cio);
+ return NULL;
+ }
+ } else {
+ opj_free(cio);
+ return NULL;
+ }
+
+ /* Initialize byte IO */
+ cio->start = cio->buffer;
+ cio->end = cio->buffer + cio->length;
+ cio->bp = cio->buffer;
+
+ return cio;
+}
+
+void OPJ_CALLCONV opj_cio_close(opj_cio_t *cio)
+{
+ if (cio) {
+ if (cio->openmode == OPJ_STREAM_WRITE) {
+ /* destroy the allocated buffer */
+ opj_free(cio->buffer);
+ }
+ /* destroy the cio */
+ opj_free(cio);
+ }
+}
+
+
+/* ----------------------------------------------------------------------- */
+
+/*
+ * Get position in byte stream.
+ */
+int OPJ_CALLCONV cio_tell(opj_cio_t *cio)
+{
+ return cio->bp - cio->start;
+}
+
+/*
+ * Set position in byte stream.
+ *
+ * pos : position, in number of bytes, from the beginning of the stream
+ */
+void OPJ_CALLCONV cio_seek(opj_cio_t *cio, int pos)
+{
+ cio->bp = cio->start + pos;
+}
+
+/*
+ * Number of bytes left before the end of the stream.
+ */
+int cio_numbytesleft(opj_cio_t *cio)
+{
+ return cio->end - cio->bp;
+}
+
+/*
+ * Get pointer to the current position in the stream.
+ */
+unsigned char *cio_getbp(opj_cio_t *cio)
+{
+ return cio->bp;
+}
+
+/*
+ * Write a byte.
+ */
+static bool cio_byteout(opj_cio_t *cio, unsigned char v)
+{
+ if (cio->bp >= cio->end) {
+ opj_event_msg(cio->cinfo, EVT_ERROR, "write error\n");
+ return false;
+ }
+ *cio->bp++ = v;
+ return true;
+}
+
+/*
+ * Read a byte.
+ */
+static unsigned char cio_bytein(opj_cio_t *cio)
+{
+ if (cio->bp >= cio->end) {
+ opj_event_msg(cio->cinfo, EVT_ERROR, "read error\n");
+ return 0;
+ }
+ return *cio->bp++;
+}
+
+/*
+ * Write some bytes.
+ *
+ * v : value to write
+ * n : number of bytes to write
+ */
+unsigned int cio_write(opj_cio_t *cio, unsigned int v, int n)
+{
+ int i;
+ for (i = n - 1; i >= 0; i--) {
+ if (!cio_byteout(cio, (unsigned char)((v >> (i << 3)) & 0xff))) {
+ return 0;
+ }
+ }
+ return n;
+}
+
+/*
+ * Read some bytes.
+ *
+ * n : number of bytes to read
+ *
+ * return : value of the n bytes read
+ */
+unsigned int cio_read(opj_cio_t *cio, int n)
+{
+ int i;
+ unsigned int v;
+ v = 0;
+ for (i = n - 1; i >= 0; i--) {
+ v += cio_bytein(cio) << (i << 3);
+ }
+ return v;
+}
+
+/*
+ * Skip some bytes.
+ *
+ * n : number of bytes to skip
+ */
+void cio_skip(opj_cio_t *cio, int n)
+{
+ cio->bp += n;
+}
+
+/*
+ * Write some bytes.
+ *
+ * v : value to write
+ * n : number of bytes to write
+ */
+int cio_write_int(opj_cio_t *cio, int v, int n)
+{
+ int i;
+ for (i = n - 1; i >= 0; i--) {
+ if (!cio_byteout(cio, (char)((v >> (i << 3)) & 0xff))) {
+ return 0;
+ }
+ }
+ return n;
+}
+
+/*
+ * Read some bytes.
+ *
+ * n : number of bytes to read
+ *
+ * return : value of the n bytes read
+ */
+int cio_read_int(opj_cio_t *cio, int n)
+{
+ int i;
+ int v;
+ v = 0;
+ for (i = n - 1; i >= 0; i--) {
+ v += cio_bytein(cio) << (i << 3);
+ }
+ return v;
+}
+
projects / openjpeg.git / blobdiff