/*
-* Copyright (c) 2003-2004, Yannick Verschueren
-* Copyright (c) 2003-2004, 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.
+ * Copyright (c) 2004, Yannick Verschueren
+ * Copyright (c) 2005, Herv� 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"
+
+/** @defgroup JP2 JP2 - JPEG-2000 file format reader/writer */
+/*@{*/
+
+/** @name Local static functions */
+/*@{*/
+
+/**
+Read box headers
+@param cinfo Codec context info
+@param cio Input stream
+@param box
+@return Returns true if successful, returns false otherwise
*/
+static bool jp2_read_boxhdr(opj_common_ptr cinfo, opj_cio_t *cio, opj_jp2_box_t *box);
+static void jp2_write_url(opj_cio_t *cio, char *Idx_file);
+/**
+Read the IHDR box - Image Header box
+@param jp2 JP2 handle
+@param cio Input buffer stream
+@return Returns true if successful, returns false otherwise
+*/
+static bool jp2_read_ihdr(opj_jp2_t *jp2, opj_cio_t *cio);
+static void jp2_write_ihdr(opj_jp2_t *jp2, opj_cio_t *cio);
+static void jp2_write_bpcc(opj_jp2_t *jp2, opj_cio_t *cio);
+static bool jp2_read_bpcc(opj_jp2_t *jp2, opj_cio_t *cio);
+static void jp2_write_colr(opj_jp2_t *jp2, opj_cio_t *cio);
+static bool jp2_read_colr(opj_jp2_t *jp2, opj_cio_t *cio);
+/**
+Write the JP2H box - JP2 Header box
+@param jp2 JP2 handle
+@param cio Output buffer stream
+*/
+static void jp2_write_jp2h(opj_jp2_t *jp2, opj_cio_t *cio);
+/**
+Read the JP2H box - JP2 Header box
+@param jp2 JP2 handle
+@param cio Input buffer stream
+@return Returns true if successful, returns false otherwise
+*/
+static bool jp2_read_jp2h(opj_jp2_t *jp2, opj_cio_t *cio);
+/**
+Write the FTYP box - File type box
+@param jp2 JP2 handle
+@param cio Output buffer stream
+*/
+static void jp2_write_ftyp(opj_jp2_t *jp2, opj_cio_t *cio);
+/**
+Read the FTYP box - File type box
+@param jp2 JP2 handle
+@param cio Input buffer stream
+@return Returns true if successful, returns false otherwise
+*/
+static bool jp2_read_ftyp(opj_jp2_t *jp2, opj_cio_t *cio);
+static int jp2_write_jp2c(opj_jp2_t *jp2, opj_cio_t *cio, char *index);
+static bool jp2_read_jp2c(opj_jp2_t *jp2, opj_cio_t *cio, unsigned int *j2k_codestream_length, unsigned int *j2k_codestream_offset);
+static void jp2_write_jp(opj_cio_t *cio);
+/**
+Read the JP box - JPEG 2000 signature
+@param jp2 JP2 handle
+@param cio Input buffer stream
+@return Returns true if successful, returns false otherwise
+*/
+static bool jp2_read_jp(opj_jp2_t *jp2, opj_cio_t *cio);
+/**
+Decode the structure of a JP2 file
+@param jp2 JP2 handle
+@param cio Input buffer stream
+@return Returns true if successful, returns false otherwise
+*/
+static bool jp2_read_struct(opj_jp2_t *jp2, opj_cio_t *cio);
+
+/*@}*/
+
+/*@}*/
+
+/* ----------------------------------------------------------------------- */
+
+static bool jp2_read_boxhdr(opj_common_ptr cinfo, opj_cio_t *cio, opj_jp2_box_t *box) {
+ box->init_pos = cio_tell(cio);
+ box->length = cio_read(cio, 4);
+ box->type = cio_read(cio, 4);
+ if (box->length == 1) {
+ if (cio_read(cio, 4) != 0) {
+ opj_event_msg(cinfo, EVT_ERROR, "Cannot handle box sizes higher than 2^32\n");
+ return false;
+ }
+ box->length = cio_read(cio, 4);
+ if (box->length == 0)
+ box->length = cio_numbytesleft(cio) + 12;
+ }
+ else if (box->length == 0) {
+ box->length = cio_numbytesleft(cio) + 8;
+ }
+
+ return true;
+}
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+static void jp2_write_url(opj_cio_t *cio, char *Idx_file) {
+ unsigned int i;
+ opj_jp2_box_t box;
+
+ box.init_pos = cio_tell(cio);
+ cio_skip(cio, 4);
+ cio_write(cio, JP2_URL, 4); /* DBTL */
+ cio_write(cio, 0, 1); /* VERS */
+ cio_write(cio, 0, 3); /* FLAG */
+
+ if(Idx_file) {
+ for (i = 0; i < strlen(Idx_file); i++) {
+ cio_write(cio, Idx_file[i], 1);
+ }
+ }
+
+ box.length = cio_tell(cio) - box.init_pos;
+ cio_seek(cio, box.init_pos);
+ cio_write(cio, box.length, 4); /* L */
+ cio_seek(cio, box.init_pos + box.length);
+}
-#include "j2k.h"
-#include "jp2.h"
-#include "cio.h"
+static bool jp2_read_ihdr(opj_jp2_t *jp2, opj_cio_t *cio) {
+ opj_jp2_box_t box;
-#define JPIP_JPIP 0x6a706970
+ opj_common_ptr cinfo = jp2->cinfo;
-#define JP2_JP 0x6a502020
-#define JP2_FTYP 0x66747970
-#define JP2_JP2H 0x6a703268
-#define JP2_IHDR 0x69686472
-#define JP2_COLR 0x636f6c72
-#define JP2_JP2C 0x6a703263
-#define JP2_URL 0x75726c20
-#define JP2_DBTL 0x6474626c
-#define JP2_BPCC 0x62706363
-#define JP2_JP2 0x6a703220
+ jp2_read_boxhdr(cinfo, cio, &box);
+ if (JP2_IHDR != box.type) {
+ opj_event_msg(cinfo, EVT_ERROR, "Expected IHDR Marker\n");
+ return false;
+ }
-/*
-*
-* Read box headers
-*
-*/
+ jp2->h = cio_read(cio, 4); /* HEIGHT */
+ jp2->w = cio_read(cio, 4); /* WIDTH */
+ jp2->numcomps = cio_read(cio, 2); /* NC */
-int jp2_read_boxhdr(jp2_box_t * box)
-{
- box->init_pos = cio_tell();
- box->length = cio_read(4);
- box->type = cio_read(4);
- if (box->length == 1) {
- if (cio_read(4) != 0) {
- fprintf(stderr, "Error: Cannot handle box sizes higher than 2^32\n");
- return 1;
- }
- box->length = cio_read(4);
- if (box->length == 0)
- box->length = cio_numbytesleft() + 12;
- } else if (box->length == 0) {
- box->length = cio_numbytesleft() + 8;
- }
- return 0;
-}
+ jp2->bpc = cio_read(cio, 1); /* BPC */
-/*
-*
-* Initialisation of a Standard JP2 structure
-*/
+ jp2->C = cio_read(cio, 1); /* C */
+ jp2->UnkC = cio_read(cio, 1); /* UnkC */
+ jp2->IPR = cio_read(cio, 1); /* IPR */
-int jp2_init_stdjp2(jp2_struct_t * jp2_struct)
-{
+ if (cio_tell(cio) - box.init_pos != box.length) {
+ opj_event_msg(cinfo, EVT_ERROR, "Error with IHDR Box\n");
+ return false;
+ }
- jp2_struct->comps =
- (jp2_comps_t *) malloc(jp2_struct->numcomps * sizeof(jp2_comps_t));
+ return true;
+}
+
+static void jp2_write_ihdr(opj_jp2_t *jp2, opj_cio_t *cio) {
+ opj_jp2_box_t box;
- jp2_struct->precedence = 0; /* PRECEDENCE*/
- jp2_struct->approx = 0; /* APPROX*/
+ box.init_pos = cio_tell(cio);
+ cio_skip(cio, 4);
+ cio_write(cio, JP2_IHDR, 4); /* IHDR */
- jp2_struct->brand = JP2_JP2; /* BR */
- jp2_struct->minversion = 0; /* MinV */
- jp2_struct->numcl = 1;
- jp2_struct->cl = (int *) malloc(jp2_struct->numcl * sizeof(int));
- jp2_struct->cl[0] = JP2_JP2; /* CL0 : JP2 */
+ cio_write(cio, jp2->h, 4); /* HEIGHT */
+ cio_write(cio, jp2->w, 4); /* WIDTH */
+ cio_write(cio, jp2->numcomps, 2); /* NC */
- jp2_struct->C = 7; /* C : Always 7*/
- jp2_struct->UnkC = 0; /* UnkC, colorspace specified in colr box*/
- jp2_struct->IPR = 0; /* IPR, no intellectual property*/
+ cio_write(cio, jp2->bpc, 1); /* BPC */
- return 0;
+ cio_write(cio, jp2->C, 1); /* C : Always 7 */
+ cio_write(cio, jp2->UnkC, 1); /* UnkC, colorspace unknown */
+ cio_write(cio, jp2->IPR, 1); /* IPR, no intellectual property */
+
+ box.length = cio_tell(cio) - box.init_pos;
+ cio_seek(cio, box.init_pos);
+ cio_write(cio, box.length, 4); /* L */
+ cio_seek(cio, box.init_pos + box.length);
}
+static void jp2_write_bpcc(opj_jp2_t *jp2, opj_cio_t *cio) {
+ unsigned int i;
+ opj_jp2_box_t box;
-void jp2_write_url(char *Idx_file)
-{
- unsigned int i;
- char str[256];
- jp2_box_t box;
+ box.init_pos = cio_tell(cio);
+ cio_skip(cio, 4);
+ cio_write(cio, JP2_BPCC, 4); /* BPCC */
- sprintf(str, "%s", Idx_file);
+ for (i = 0; i < jp2->numcomps; i++) {
+ cio_write(cio, jp2->comps[i].bpcc, 1);
+ }
+ box.length = cio_tell(cio) - box.init_pos;
+ cio_seek(cio, box.init_pos);
+ cio_write(cio, box.length, 4); /* L */
+ cio_seek(cio, box.init_pos + box.length);
+}
- box.init_pos = cio_tell();
- cio_skip(4);
- cio_write(JP2_URL, 4); /* DBTL*/
- cio_write(0, 1); /* VERS*/
- cio_write(0, 3); /* FLAG*/
- for (i = 0; i < strlen(str); i++) {
- cio_write(str[i], 1);
- }
+static bool jp2_read_bpcc(opj_jp2_t *jp2, opj_cio_t *cio) {
+ unsigned int i;
+ opj_jp2_box_t box;
- box.length = cio_tell() - box.init_pos;
- cio_seek(box.init_pos);
- cio_write(box.length, 4); /* L */
- cio_seek(box.init_pos + box.length);
-}
+ opj_common_ptr cinfo = jp2->cinfo;
-/*
-* Read the IHDR box
-*
-* Image Header box
-*
-*/
-int jp2_read_ihdr(jp2_struct_t * jp2_struct)
-{
- jp2_box_t box;
-
- jp2_read_boxhdr(&box);
- if (JP2_IHDR != box.type) {
- fprintf(stderr, "Error: Expected IHDR Marker\n");
- return 1;
- }
-
- jp2_struct->h = cio_read(4); /* HEIGHT*/
- jp2_struct->w = cio_read(4); /* WIDTH*/
- jp2_struct->numcomps = cio_read(2); /* NC*/
-
- jp2_struct->bpc = cio_read(1); /* BPC*/
-
- jp2_struct->C = cio_read(1); /* C */
- jp2_struct->UnkC = cio_read(1); /* UnkC*/
- jp2_struct->IPR = cio_read(1); /* IPR*/
-
- if (cio_tell() - box.init_pos != box.length) {
- fprintf(stderr, "Error with IHDR Box\n");
- return 1;
- }
- return 0;
+ jp2_read_boxhdr(cinfo, cio, &box);
+ if (JP2_BPCC != box.type) {
+ opj_event_msg(cinfo, EVT_ERROR, "Expected BPCC Marker\n");
+ return false;
+ }
+
+ for (i = 0; i < jp2->numcomps; i++) {
+ jp2->comps[i].bpcc = cio_read(cio, 1);
+ }
+
+ if (cio_tell(cio) - box.init_pos != box.length) {
+ opj_event_msg(cinfo, EVT_ERROR, "Error with BPCC Box\n");
+ return false;
+ }
+
+ return true;
}
-void jp2_write_ihdr(jp2_struct_t * jp2_struct)
-{
- jp2_box_t box;
+static void jp2_write_colr(opj_jp2_t *jp2, opj_cio_t *cio) {
+ opj_jp2_box_t box;
- box.init_pos = cio_tell();
- cio_skip(4);
- cio_write(JP2_IHDR, 4); /* IHDR*/
+ box.init_pos = cio_tell(cio);
+ cio_skip(cio, 4);
+ cio_write(cio, JP2_COLR, 4); /* COLR */
- cio_write(jp2_struct->h, 4); /* HEIGHT*/
- cio_write(jp2_struct->w, 4); /* WIDTH*/
- cio_write(jp2_struct->numcomps, 2); /* NC*/
+ cio_write(cio, jp2->meth, 1); /* METH */
+ cio_write(cio, jp2->precedence, 1); /* PRECEDENCE */
+ cio_write(cio, jp2->approx, 1); /* APPROX */
- cio_write(jp2_struct->bpc, 1); /* BPC */
+ if (jp2->meth == 1) {
+ cio_write(cio, jp2->enumcs, 4); /* EnumCS */
+ } else {
+ cio_write(cio, 0, 1); /* PROFILE (??) */
+ }
- cio_write(jp2_struct->C, 1); /* C : Always 7*/
- cio_write(jp2_struct->UnkC, 1); /* UnkC, colorspace unknow*/
- cio_write(jp2_struct->IPR, 1); /* IPR, no intellectual property*/
+ box.length = cio_tell(cio) - box.init_pos;
+ cio_seek(cio, box.init_pos);
+ cio_write(cio, box.length, 4); /* L */
+ cio_seek(cio, box.init_pos + box.length);
+}
- box.length = cio_tell() - box.init_pos;
- cio_seek(box.init_pos);
- cio_write(box.length, 4); /* L */
- cio_seek(box.init_pos + box.length);
+static bool jp2_read_colr(opj_jp2_t *jp2, opj_cio_t *cio) {
+ opj_jp2_box_t box;
+ int skip_len;
+
+ opj_common_ptr cinfo = jp2->cinfo;
+
+ jp2_read_boxhdr(cinfo, cio, &box);
+ do {
+ if (JP2_COLR != box.type) {
+ cio_skip(cio, box.length - 8);
+ jp2_read_boxhdr(cinfo, cio, &box);
+ }
+ } while(JP2_COLR != box.type);
+
+ jp2->meth = cio_read(cio, 1); /* METH */
+ jp2->precedence = cio_read(cio, 1); /* PRECEDENCE */
+ jp2->approx = cio_read(cio, 1); /* APPROX */
+
+ if (jp2->meth == 1) {
+ jp2->enumcs = cio_read(cio, 4); /* EnumCS */
+ } else {
+ /* skip PROFILE */
+ skip_len = box.init_pos + box.length - cio_tell(cio);
+ if (skip_len < 0) {
+ opj_event_msg(cinfo, EVT_ERROR, "Error with JP2H box size\n");
+ return false;
+ }
+ cio_skip(cio, box.init_pos + box.length - cio_tell(cio));
+ }
+
+ if (cio_tell(cio) - box.init_pos != box.length) {
+ opj_event_msg(cinfo, EVT_ERROR, "Error with BPCC Box\n");
+ return false;
+ }
+ return true;
}
+static void jp2_write_jp2h(opj_jp2_t *jp2, opj_cio_t *cio) {
+ opj_jp2_box_t box;
-void jp2_write_bpcc(jp2_struct_t * jp2_struct)
-{
- unsigned int i;
- jp2_box_t box;
+ box.init_pos = cio_tell(cio);
+ cio_skip(cio, 4);
+ cio_write(cio, JP2_JP2H, 4); /* JP2H */
- box.init_pos = cio_tell();
- cio_skip(4);
- cio_write(JP2_BPCC, 4); /* BPCC*/
+ jp2_write_ihdr(jp2, cio);
- for (i = 0; i < jp2_struct->numcomps; i++)
- cio_write(jp2_struct->comps[i].bpcc, 1);
+ if (jp2->bpc == 255) {
+ jp2_write_bpcc(jp2, cio);
+ }
+ jp2_write_colr(jp2, cio);
- box.length = cio_tell() - box.init_pos;
- cio_seek(box.init_pos);
- cio_write(box.length, 4); /* L */
- cio_seek(box.init_pos + box.length);
+ box.length = cio_tell(cio) - box.init_pos;
+ cio_seek(cio, box.init_pos);
+ cio_write(cio, box.length, 4); /* L */
+ cio_seek(cio, box.init_pos + box.length);
}
+static bool jp2_read_jp2h(opj_jp2_t *jp2, opj_cio_t *cio) {
+ opj_jp2_box_t box;
+ int skip_len;
+
+ opj_common_ptr cinfo = jp2->cinfo;
+
+ jp2_read_boxhdr(cinfo, cio, &box);
+ do {
+ if (JP2_JP2H != box.type) {
+ if (box.type == JP2_JP2C) {
+ opj_event_msg(cinfo, EVT_ERROR, "Expected JP2H Marker\n");
+ return false;
+ }
+ cio_skip(cio, box.length - 8);
+ jp2_read_boxhdr(cinfo, cio, &box);
+ }
+ } while(JP2_JP2H != box.type);
+
+ if (!jp2_read_ihdr(jp2, cio))
+ return false;
+
+ if (jp2->bpc == 255) {
+ if (!jp2_read_bpcc(jp2, cio))
+ return false;
+ }
+ if (!jp2_read_colr(jp2, cio))
+ return false;
+
+ skip_len = box.init_pos + box.length - cio_tell(cio);
+ if (skip_len < 0) {
+ opj_event_msg(cinfo, EVT_ERROR, "Error with JP2H Box\n");
+ return false;
+ }
+ cio_skip(cio, box.init_pos + box.length - cio_tell(cio));
+
+ return true;
+}
+
+static void jp2_write_ftyp(opj_jp2_t *jp2, opj_cio_t *cio) {
+ unsigned int i;
+ opj_jp2_box_t box;
-int jp2_read_bpcc(jp2_struct_t * jp2_struct)
-{
- unsigned int i;
- jp2_box_t box;
+ box.init_pos = cio_tell(cio);
+ cio_skip(cio, 4);
+ cio_write(cio, JP2_FTYP, 4); /* FTYP */
- jp2_read_boxhdr(&box);
- if (JP2_BPCC != box.type) {
- fprintf(stderr, "Error: Expected BPCC Marker\n");
- return 1;
- }
+ cio_write(cio, jp2->brand, 4); /* BR */
+ cio_write(cio, jp2->minversion, 4); /* MinV */
- for (i = 0; i < jp2_struct->numcomps; i++)
- jp2_struct->comps[i].bpcc = cio_read(1);
+ for (i = 0; i < jp2->numcl; i++) {
+ cio_write(cio, jp2->cl[i], 4); /* CL */
+ }
- if (cio_tell() - box.init_pos != box.length) {
- fprintf(stderr, "Error with BPCC Box\n");
- return 1;
- }
- return 0;
+ box.length = cio_tell(cio) - box.init_pos;
+ cio_seek(cio, box.init_pos);
+ cio_write(cio, box.length, 4); /* L */
+ cio_seek(cio, box.init_pos + box.length);
}
-void jp2_write_colr(jp2_struct_t * jp2_struct)
-{
- jp2_box_t box;
+static bool jp2_read_ftyp(opj_jp2_t *jp2, opj_cio_t *cio) {
+ int i;
+ opj_jp2_box_t box;
- box.init_pos = cio_tell();
- cio_skip(4);
- cio_write(JP2_COLR, 4); /* COLR*/
+ opj_common_ptr cinfo = jp2->cinfo;
- cio_write(jp2_struct->meth, 1); /* METH*/
- cio_write(jp2_struct->precedence, 1); /* PRECEDENCE*/
- cio_write(jp2_struct->approx, 1); /* APPROX*/
+ jp2_read_boxhdr(cinfo, cio, &box);
- if (jp2_struct->meth == 1)
- cio_write(jp2_struct->enumcs, 4); /* EnumCS*/
- else
- cio_write(0, 1); /* PROFILE (??)*/
+ if (JP2_FTYP != box.type) {
+ opj_event_msg(cinfo, EVT_ERROR, "Expected FTYP Marker\n");
+ return false;
+ }
- box.length = cio_tell() - box.init_pos;
- cio_seek(box.init_pos);
- cio_write(box.length, 4); /* L */
- cio_seek(box.init_pos + box.length);
-}
+ jp2->brand = cio_read(cio, 4); /* BR */
+ jp2->minversion = cio_read(cio, 4); /* MinV */
+ jp2->numcl = (box.length - 16) / 4;
+ jp2->cl = (unsigned int *) opj_malloc(jp2->numcl * sizeof(unsigned int));
-int jp2_read_colr(jp2_struct_t * jp2_struct)
-{
- jp2_box_t box;
- int skip_len;
-
- jp2_read_boxhdr(&box);
- do {
- if (JP2_COLR != box.type) {
- cio_skip(box.length - 8);
- jp2_read_boxhdr(&box);
- }
- } while (JP2_COLR != box.type);
-
- jp2_struct->meth = cio_read(1); /* METH*/
- jp2_struct->precedence = cio_read(1); /* PRECEDENCE*/
- jp2_struct->approx = cio_read(1); /* APPROX*/
-
- if (jp2_struct->meth == 1)
- jp2_struct->enumcs = cio_read(4); /* EnumCS*/
- else {
- /* SKIP PROFILE */
- skip_len = box.init_pos + box.length - cio_tell();
- if (skip_len < 0) {
- fprintf(stderr, "Error with JP2H box size\n");
- return 1;
- }
- cio_skip(box.init_pos + box.length - cio_tell());
- }
-
- if (cio_tell() - box.init_pos != box.length) {
- fprintf(stderr, "Error with BPCC Box\n");
- return 1;
- }
- return 0;
+ for (i = 0; i < (int)jp2->numcl; i++) {
+ jp2->cl[i] = cio_read(cio, 4); /* CLi */
+ }
+
+ if (cio_tell(cio) - box.init_pos != box.length) {
+ opj_event_msg(cinfo, EVT_ERROR, "Error with FTYP Box\n");
+ return false;
+ }
+
+ return true;
}
-/*
-* Write the JP2H box
-*
-* JP2 Header box
-*
-*/
-void jp2_write_jp2h(jp2_struct_t * jp2_struct)
-{
- jp2_box_t box;
+static int jp2_write_jp2c(opj_jp2_t *jp2, opj_cio_t *cio, char *index) {
+ unsigned int j2k_codestream_offset, j2k_codestream_length;
+ opj_jp2_box_t box;
- box.init_pos = cio_tell();
- cio_skip(4);;
- cio_write(JP2_JP2H, 4); /* JP2H */
+ opj_j2k_t *j2k = jp2->j2k;
+ opj_image_t *image = jp2->image;
- jp2_write_ihdr(jp2_struct);
+ box.init_pos = cio_tell(cio);
+ cio_skip(cio, 4);
+ cio_write(cio, JP2_JP2C, 4); /* JP2C */
- if (jp2_struct->bpc == 255)
- jp2_write_bpcc(jp2_struct);
- jp2_write_colr(jp2_struct);
+ /* J2K encoding */
+ j2k_codestream_offset = cio_tell(cio);
+ if(!j2k_encode(j2k, cio, image, index)) {
+ opj_event_msg(j2k->cinfo, EVT_ERROR, "Failed to encode image\n");
+ return 0;
+ }
+ j2k_codestream_length = cio_tell(cio) - j2k_codestream_offset;
- box.length = cio_tell() - box.init_pos;
- cio_seek(box.init_pos);
- cio_write(box.length, 4); /* L */
- cio_seek(box.init_pos + box.length);
-}
+ jp2->j2k_codestream_offset = j2k_codestream_offset;
+ jp2->j2k_codestream_length = j2k_codestream_length;
+ box.length = 8 + jp2->j2k_codestream_length;
+ cio_seek(cio, box.init_pos);
+ cio_write(cio, box.length, 4); /* L */
+ cio_seek(cio, box.init_pos + box.length);
-/*
-* Read the JP2H box
-*
-* JP2 Header box
-*
-*/
-int jp2_read_jp2h(jp2_struct_t * jp2_struct)
-{
- jp2_box_t box;
- int skip_len;
-
- jp2_read_boxhdr(&box);
- do {
- if (JP2_JP2H != box.type) {
- if (box.type == JP2_JP2C) {
- fprintf(stderr, "Error: Expected JP2H Marker\n");
- return 1;
- }
- cio_skip(box.length - 8);
- jp2_read_boxhdr(&box);
- }
- } while (JP2_JP2H != box.type);
-
- if (jp2_read_ihdr(jp2_struct))
- return 1;
-
- if (jp2_struct->bpc == 255) {
- if (jp2_read_bpcc(jp2_struct))
- return 1;
- }
-
- if (jp2_read_colr(jp2_struct))
- return 1;
-
- skip_len = box.init_pos + box.length - cio_tell();
- if (skip_len < 0) {
- fprintf(stderr, "Error with JP2H box size\n");
- return 1;
- }
- cio_skip(box.init_pos + box.length - cio_tell());
-
- return 0;
+ return box.length;
}
-/*
-* Write the FTYP box
-*
-* File type box
-*
-*/
-void jp2_write_ftyp(jp2_struct_t * jp2_struct)
-{
- unsigned int i;
- jp2_box_t box;
+static bool jp2_read_jp2c(opj_jp2_t *jp2, opj_cio_t *cio, unsigned int *j2k_codestream_length, unsigned int *j2k_codestream_offset) {
+ opj_jp2_box_t box;
- box.init_pos = cio_tell();
- cio_skip(4);
- cio_write(JP2_FTYP, 4); /* FTYP */
+ opj_common_ptr cinfo = jp2->cinfo;
- cio_write(jp2_struct->brand, 4); /* BR */
- cio_write(jp2_struct->minversion, 4); /* MinV */
+ jp2_read_boxhdr(cinfo, cio, &box);
+ do {
+ if(JP2_JP2C != box.type) {
+ cio_skip(cio, box.length - 8);
+ jp2_read_boxhdr(cinfo, cio, &box);
+ }
+ } while(JP2_JP2C != box.type);
- for (i = 0; i < jp2_struct->numcl; i++)
- cio_write(jp2_struct->cl[i], 4); /* CL */
+ *j2k_codestream_offset = cio_tell(cio);
+ *j2k_codestream_length = box.length - 8;
- box.length = cio_tell() - box.init_pos;
- cio_seek(box.init_pos);
- cio_write(box.length, 4); /* L */
- cio_seek(box.init_pos + box.length);
+ return true;
}
-/*
-* Read the FTYP box
-*
-* File type box
-*
-*/
-int jp2_read_ftyp(jp2_struct_t * jp2_struct)
-{
- int i;
- jp2_box_t box;
-
- jp2_read_boxhdr(&box);
-
- if (JP2_FTYP != box.type) {
- fprintf(stderr, "Error: Excpected FTYP Marker\n");
- return 1;
- }
-
- jp2_struct->brand = cio_read(4); /* BR */
- jp2_struct->minversion = cio_read(4); /* MinV */
- jp2_struct->numcl = (box.length - 16) / 4;
- jp2_struct->cl =
- (unsigned int *) malloc(jp2_struct->numcl * sizeof(unsigned int));
-
- for (i = 0; i < (int) jp2_struct->numcl; i++)
- jp2_struct->cl[i] = cio_read(4); /* CLi */
-
- if (cio_tell() - box.init_pos != box.length) {
- fprintf(stderr, "Error with FTYP Box\n");
- return 1;
- }
- return 0;
-}
+static void jp2_write_jp(opj_cio_t *cio) {
+ opj_jp2_box_t box;
-int jp2_write_jp2c(int j2k_codestream_len, int *j2k_codestream_offset,
- char *j2k_codestream)
-{
- jp2_box_t box;
+ box.init_pos = cio_tell(cio);
+ cio_skip(cio, 4);
+ cio_write(cio, JP2_JP, 4); /* JP2 signature */
+ cio_write(cio, 0x0d0a870a, 4);
- box.init_pos = cio_tell();
- cio_skip(4);
- cio_write(JP2_JP2C, 4); /* JP2C*/
+ box.length = cio_tell(cio) - box.init_pos;
+ cio_seek(cio, box.init_pos);
+ cio_write(cio, box.length, 4); /* L */
+ cio_seek(cio, box.init_pos + box.length);
+}
- *j2k_codestream_offset = cio_tell();
- memcpy(cio_getbp(), j2k_codestream, j2k_codestream_len);
+static bool jp2_read_jp(opj_jp2_t *jp2, opj_cio_t *cio) {
+ opj_jp2_box_t box;
+
+ opj_common_ptr cinfo = jp2->cinfo;
+
+ jp2_read_boxhdr(cinfo, cio, &box);
+ if (JP2_JP != box.type) {
+ opj_event_msg(cinfo, EVT_ERROR, "Expected JP Marker\n");
+ return false;
+ }
+ if (0x0d0a870a != cio_read(cio, 4)) {
+ opj_event_msg(cinfo, EVT_ERROR, "Error with JP Marker\n");
+ return false;
+ }
+ if (cio_tell(cio) - box.init_pos != box.length) {
+ opj_event_msg(cinfo, EVT_ERROR, "Error with JP Box size\n");
+ return false;
+ }
+
+ return true;
+}
- box.length = 8 + j2k_codestream_len;
- cio_seek(box.init_pos);
- cio_write(box.length, 4); /* L */
- cio_seek(box.init_pos + box.length);
- return box.length;
+static bool jp2_read_struct(opj_jp2_t *jp2, opj_cio_t *cio) {
+ if (!jp2_read_jp(jp2, cio))
+ return false;
+ if (!jp2_read_ftyp(jp2, cio))
+ return false;
+ if (!jp2_read_jp2h(jp2, cio))
+ return false;
+ if (!jp2_read_jp2c(jp2, cio, &jp2->j2k_codestream_length, &jp2->j2k_codestream_offset))
+ return false;
+
+ return true;
}
+/* ----------------------------------------------------------------------- */
+/* JP2 decoder interface */
+/* ----------------------------------------------------------------------- */
+
+opj_jp2_t* jp2_create_decompress(opj_common_ptr cinfo) {
+ opj_jp2_t *jp2 = (opj_jp2_t*)opj_malloc(sizeof(opj_jp2_t));
+ if(jp2) {
+ jp2->cinfo = cinfo;
+ /* create the J2K codec */
+ jp2->j2k = j2k_create_decompress(cinfo);
+ if(jp2->j2k == NULL) {
+ jp2_destroy_decompress(jp2);
+ return NULL;
+ }
+ }
+ return jp2;
+}
-int jp2_read_jp2c(unsigned int *j2k_codestream_len,
- unsigned int *j2k_codestream_offset)
-{
- jp2_box_t box;
+void jp2_destroy_decompress(opj_jp2_t *jp2) {
+ if(jp2) {
+ /* destroy the J2K codec */
+ j2k_destroy_decompress(jp2->j2k);
+
+ if(jp2->comps) {
+ opj_free(jp2->comps);
+ }
+ if(jp2->cl) {
+ opj_free(jp2->cl);
+ }
+ opj_free(jp2);
+ }
+}
- jp2_read_boxhdr(&box);
- do {
- if (JP2_JP2C != box.type) {
- cio_skip(box.length - 8);
- jp2_read_boxhdr(&box);
- }
- } while (JP2_JP2C != box.type);
+void jp2_setup_decoder(opj_jp2_t *jp2, opj_dparameters_t *parameters) {
+ /* setup the J2K codec */
+ j2k_setup_decoder(jp2->j2k, parameters);
+ /* further JP2 initializations go here */
+}
- *j2k_codestream_offset = cio_tell();
- *j2k_codestream_len = box.length - 8;
+opj_image_t* jp2_decode(opj_jp2_t *jp2, opj_cio_t *cio) {
+ opj_common_ptr cinfo;
+ opj_image_t *image = NULL;
- return 0;
-}
+ if(!jp2 || !cio) {
+ return NULL;
+ }
-void jp2_write_jp()
-{
- jp2_box_t box;
+ cinfo = jp2->cinfo;
- box.init_pos = cio_tell();
- cio_skip(4);
- cio_write(JP2_JP, 4); /* JP*/
- cio_write(0x0d0a870a, 4);
+ /* JP2 decoding */
+ if(!jp2_read_struct(jp2, cio)) {
+ opj_event_msg(cinfo, EVT_ERROR, "Failed to decode jp2 structure\n");
+ return NULL;
+ }
- box.length = cio_tell() - box.init_pos;
- cio_seek(box.init_pos);
- cio_write(box.length, 4); /* L */
- cio_seek(box.init_pos + box.length);
+ /* J2K decoding */
+ image = j2k_decode(jp2->j2k, cio);
+ if(!image) {
+ opj_event_msg(cinfo, EVT_ERROR, "Failed to decode J2K image\n");
+ }
+
+ return image;
}
-/*
-* Read the JP box
-*
-* JPEG 2000 signature
-*
-* return 1 if error else 0
-*/
-int jp2_read_jp()
-{
- jp2_box_t box;
-
- jp2_read_boxhdr(&box);
- if (JP2_JP != box.type) {
- fprintf(stderr, "Error: Expected JP Marker\n");
- return 1;
- }
- if (0x0d0a870a != cio_read(4)) {
- fprintf(stderr, "Error with JP Marker\n");
- return 1;
- }
- if (cio_tell() - box.init_pos != box.length) {
- fprintf(stderr, "Error with JP Box size\n");
- return 1;
- }
- return 0;
+/* ----------------------------------------------------------------------- */
+/* JP2 encoder interface */
+/* ----------------------------------------------------------------------- */
+
+opj_jp2_t* jp2_create_compress(opj_common_ptr cinfo) {
+ opj_jp2_t *jp2 = (opj_jp2_t*)opj_malloc(sizeof(opj_jp2_t));
+ if(jp2) {
+ jp2->cinfo = cinfo;
+ /* create the J2K codec */
+ jp2->j2k = j2k_create_compress(cinfo);
+ if(jp2->j2k == NULL) {
+ jp2_destroy_compress(jp2);
+ return NULL;
+ }
+ }
+ return jp2;
+}
+void jp2_destroy_compress(opj_jp2_t *jp2) {
+ if(jp2) {
+ /* destroy the J2K codec */
+ j2k_destroy_compress(jp2->j2k);
+
+ if(jp2->comps) {
+ opj_free(jp2->comps);
+ }
+ if(jp2->cl) {
+ opj_free(jp2->cl);
+ }
+ opj_free(jp2);
+ }
}
+void jp2_setup_encoder(opj_jp2_t *jp2, opj_cparameters_t *parameters, opj_image_t *image) {
+ int i;
+ int depth_0, sign;
+
+ if(!jp2 || !parameters || !image)
+ return;
+
+ /* setup the J2K codec */
+ /* ------------------- */
+
+ j2k_setup_encoder(jp2->j2k, parameters, image);
+
+ /* setup the JP2 codec */
+ /* ------------------- */
+
+ /* Profile box */
+
+ jp2->brand = JP2_JP2; /* BR */
+ jp2->minversion = 0; /* MinV */
+ jp2->numcl = 1;
+ jp2->cl = (unsigned int*) opj_malloc(jp2->numcl * sizeof(unsigned int));
+ jp2->cl[0] = JP2_JP2; /* CL0 : JP2 */
+
+ /* Image Header box */
+
+ jp2->image = image;
+
+ jp2->numcomps = image->numcomps; /* NC */
+ jp2->comps = (opj_jp2_comps_t*) opj_malloc(jp2->numcomps * sizeof(opj_jp2_comps_t));
+ jp2->h = image->y1 - image->y0; /* HEIGHT */
+ jp2->w = image->x1 - image->x0; /* WIDTH */
+ /* BPC */
+ depth_0 = image->comps[0].prec - 1;
+ sign = image->comps[0].sgnd;
+ jp2->bpc = depth_0 + (sign << 7);
+ for (i = 1; i < image->numcomps; i++) {
+ int depth = image->comps[i].prec - 1;
+ sign = image->comps[i].sgnd;
+ if (depth_0 != depth)
+ jp2->bpc = 255;
+ }
+ jp2->C = 7; /* C : Always 7 */
+ jp2->UnkC = 0; /* UnkC, colorspace specified in colr box */
+ jp2->IPR = 0; /* IPR, no intellectual property */
+
+ /* BitsPerComponent box */
+
+ for (i = 0; i < image->numcomps; i++) {
+ jp2->comps[i].bpcc = image->comps[i].prec - 1 + (image->comps[i].sgnd << 7);
+ }
+
+ /* Colour Specification box */
+
+ if ((image->numcomps == 1 || image->numcomps == 3) && (jp2->bpc != 255)) {
+ jp2->meth = 1; /* METH: Enumerated colourspace */
+ } else {
+ jp2->meth = 2; /* METH: Restricted ICC profile */
+ }
+ if (jp2->meth == 1) {
+ if (image->color_space == 1)
+ jp2->enumcs = 16; /* sRGB as defined by IEC 61966�2�1 */
+ else if (image->color_space == 2)
+ jp2->enumcs = 17; /* greyscale */
+ else if (image->color_space == 3)
+ jp2->enumcs = 18; /* YUV */
+ } else {
+ jp2->enumcs = 0; /* PROFILE (??) */
+ }
+ jp2->precedence = 0; /* PRECEDENCE */
+ jp2->approx = 0; /* APPROX */
-int jp2_read_struct(unsigned char *src, jp2_struct_t * jp2_struct, int len)
-{
- cio_init(src, len);
-
- if (jp2_read_jp())
- return 1;
- if (jp2_read_ftyp(jp2_struct))
- return 1;
- if (jp2_read_jp2h(jp2_struct))
- return 1;
- if (jp2_read_jp2c
- (&jp2_struct->j2k_codestream_len,
- &jp2_struct->j2k_codestream_offset))
- return 1;
- return 0;
}
-int jp2_wrap_j2k(jp2_struct_t * jp2_struct, char *j2k_codestream,
- char *output)
-{
- (void)output;
- jp2_write_jp();
- jp2_write_ftyp(jp2_struct);
- jp2_write_jp2h(jp2_struct);
+bool jp2_encode(opj_jp2_t *jp2, opj_cio_t *cio, opj_image_t *image, char *index) {
+
+ /* JP2 encoding */
+
+ /* JPEG 2000 Signature box */
+ jp2_write_jp(cio);
+ /* File Type box */
+ jp2_write_ftyp(jp2, cio);
+ /* JP2 Header box */
+ jp2_write_jp2h(jp2, cio);
- jp2_write_jp2c(jp2_struct->j2k_codestream_len,
- &jp2_struct->j2k_codestream_offset, j2k_codestream);
+ /* J2K encoding */
- return cio_tell();
+ if(!jp2_write_jp2c(jp2, cio, index)) {
+ opj_event_msg(jp2->cinfo, EVT_ERROR, "Failed to encode image\n");
+ return false;
+ }
+
+ return true;
}
+
+
projects / openjpeg.git / blobdiff