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pdfium / pdfium / ac8357b3ec7e1fe4000ebcae5ce65a38bfeb5cb1 / . / third_party / libopenjpeg20 / jp2.c
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/*
* 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) 2002-2014, Universite catholique de Louvain (UCL), Belgium
* Copyright (c) 2002-2014, Professor Benoit Macq
* Copyright (c) 2001-2003, David Janssens
* Copyright (c) 2002-2003, Yannick Verschueren
* Copyright (c) 2003-2007, Francois-Olivier Devaux
* Copyright (c) 2003-2014, Antonin Descampe
* Copyright (c) 2005, Herve Drolon, FreeImage Team
* Copyright (c) 2010-2011, Kaori Hagihara
* Copyright (c) 2008, 2011-2012, Centre National d'Etudes Spatiales (CNES), FR
* Copyright (c) 2012, CS Systemes d'Information, France
* 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 */
/*@{*/
#define OPJ_BOX_SIZE 1024
#define OPJ_UNUSED(x) (void)x
/** @name Local static functions */
/*@{*/
/*static void jp2_write_url(opj_cio_t *cio, char *Idx_file);*/
/**
* Reads a IHDR box - Image Header box
*
* @param p_image_header_data pointer to actual data (already read from file)
* @param jp2 the jpeg2000 file codec.
* @param p_image_header_size the size of the image header
* @param p_manager the user event manager.
*
* @return true if the image header is valid, false else.
*/
static OPJ_BOOL opj_jp2_read_ihdr(opj_jp2_t *jp2,
OPJ_BYTE *p_image_header_data,
OPJ_UINT32 p_image_header_size,
opj_event_mgr_t * p_manager);
/**
* Writes the Image Header box - Image Header box.
*
* @param jp2 jpeg2000 file codec.
* @param p_nb_bytes_written pointer to store the nb of bytes written by the function.
*
* @return the data being copied.
*/
static OPJ_BYTE * opj_jp2_write_ihdr(opj_jp2_t *jp2,
OPJ_UINT32 * p_nb_bytes_written);
/**
* Writes the Bit per Component box.
*
* @param jp2 jpeg2000 file codec.
* @param p_nb_bytes_written pointer to store the nb of bytes written by the function.
*
* @return the data being copied.
*/
static OPJ_BYTE * opj_jp2_write_bpcc(opj_jp2_t *jp2,
OPJ_UINT32 * p_nb_bytes_written);
/**
* Reads a Bit per Component box.
*
* @param p_bpc_header_data pointer to actual data (already read from file)
* @param jp2 the jpeg2000 file codec.
* @param p_bpc_header_size the size of the bpc header
* @param p_manager the user event manager.
*
* @return true if the bpc header is valid, false else.
*/
static OPJ_BOOL opj_jp2_read_bpcc(opj_jp2_t *jp2,
OPJ_BYTE * p_bpc_header_data,
OPJ_UINT32 p_bpc_header_size,
opj_event_mgr_t * p_manager);
static OPJ_BOOL opj_jp2_read_cdef(opj_jp2_t * jp2,
OPJ_BYTE * p_cdef_header_data,
OPJ_UINT32 p_cdef_header_size,
opj_event_mgr_t * p_manager);
static void opj_jp2_apply_cdef(opj_image_t *image, opj_jp2_color_t *color,
opj_event_mgr_t *);
/**
* Writes the Channel Definition box.
*
* @param jp2 jpeg2000 file codec.
* @param p_nb_bytes_written pointer to store the nb of bytes written by the function.
*
* @return the data being copied.
*/
static OPJ_BYTE * opj_jp2_write_cdef(opj_jp2_t *jp2,
OPJ_UINT32 * p_nb_bytes_written);
/**
* Writes the Colour Specification box.
*
* @param jp2 jpeg2000 file codec.
* @param p_nb_bytes_written pointer to store the nb of bytes written by the function.
*
* @return the data being copied.
*/
static OPJ_BYTE * opj_jp2_write_colr(opj_jp2_t *jp2,
OPJ_UINT32 * p_nb_bytes_written);
/**
* Writes a FTYP box - File type box
*
* @param cio the stream to write data to.
* @param jp2 the jpeg2000 file codec.
* @param p_manager the user event manager.
*
* @return true if writing was successful.
*/
static OPJ_BOOL opj_jp2_write_ftyp(opj_jp2_t *jp2,
opj_stream_private_t *cio,
opj_event_mgr_t * p_manager);
/**
* Reads a a FTYP box - File type box
*
* @param p_header_data the data contained in the FTYP box.
* @param jp2 the jpeg2000 file codec.
* @param p_header_size the size of the data contained in the FTYP box.
* @param p_manager the user event manager.
*
* @return true if the FTYP box is valid.
*/
static OPJ_BOOL opj_jp2_read_ftyp(opj_jp2_t *jp2,
OPJ_BYTE * p_header_data,
OPJ_UINT32 p_header_size,
opj_event_mgr_t * p_manager);
static OPJ_BOOL opj_jp2_skip_jp2c(opj_jp2_t *jp2,
opj_stream_private_t *stream,
opj_event_mgr_t * p_manager);
/**
* Reads the Jpeg2000 file Header box - JP2 Header box (warning, this is a super box).
*
* @param p_header_data the data contained in the file header box.
* @param jp2 the jpeg2000 file codec.
* @param p_header_size the size of the data contained in the file header box.
* @param p_manager the user event manager.
*
* @return true if the JP2 Header box was successfully recognized.
*/
static OPJ_BOOL opj_jp2_read_jp2h(opj_jp2_t *jp2,
OPJ_BYTE *p_header_data,
OPJ_UINT32 p_header_size,
opj_event_mgr_t * p_manager);
/**
* Writes the Jpeg2000 file Header box - JP2 Header box (warning, this is a super box).
*
* @param jp2 the jpeg2000 file codec.
* @param stream the stream to write data to.
* @param p_manager user event manager.
*
* @return true if writing was successful.
*/
static OPJ_BOOL opj_jp2_write_jp2h(opj_jp2_t *jp2,
opj_stream_private_t *stream,
opj_event_mgr_t * p_manager);
/**
* Writes the Jpeg2000 codestream Header box - JP2C Header box. This function must be called AFTER the coding has been done.
*
* @param cio the stream to write data to.
* @param jp2 the jpeg2000 file codec.
* @param p_manager user event manager.
*
* @return true if writing was successful.
*/
static OPJ_BOOL opj_jp2_write_jp2c(opj_jp2_t *jp2,
opj_stream_private_t *cio,
opj_event_mgr_t * p_manager);
#ifdef USE_JPIP
/**
* Write index Finder box
* @param cio the stream to write to.
* @param jp2 the jpeg2000 file codec.
* @param p_manager user event manager.
*/
static OPJ_BOOL opj_jpip_write_iptr(opj_jp2_t *jp2,
opj_stream_private_t *cio,
opj_event_mgr_t * p_manager);
/**
* Write index Finder box
* @param cio the stream to write to.
* @param jp2 the jpeg2000 file codec.
* @param p_manager user event manager.
*/
static OPJ_BOOL opj_jpip_write_cidx(opj_jp2_t *jp2,
opj_stream_private_t *cio,
opj_event_mgr_t * p_manager);
/**
* Write file Index (superbox)
* @param cio the stream to write to.
* @param jp2 the jpeg2000 file codec.
* @param p_manager user event manager.
*/
static OPJ_BOOL opj_jpip_write_fidx(opj_jp2_t *jp2,
opj_stream_private_t *cio,
opj_event_mgr_t * p_manager);
#endif /* USE_JPIP */
/**
* Reads a jpeg2000 file signature box.
*
* @param p_header_data the data contained in the signature box.
* @param jp2 the jpeg2000 file codec.
* @param p_header_size the size of the data contained in the signature box.
* @param p_manager the user event manager.
*
* @return true if the file signature box is valid.
*/
static OPJ_BOOL opj_jp2_read_jp(opj_jp2_t *jp2,
OPJ_BYTE * p_header_data,
OPJ_UINT32 p_header_size,
opj_event_mgr_t * p_manager);
/**
* Writes a jpeg2000 file signature box.
*
* @param cio the stream to write data to.
* @param jp2 the jpeg2000 file codec.
* @param p_manager the user event manager.
*
* @return true if writing was successful.
*/
static OPJ_BOOL opj_jp2_write_jp(opj_jp2_t *jp2,
opj_stream_private_t *cio,
opj_event_mgr_t * p_manager);
/**
Apply collected palette data
@param image Image.
@param color Collector for profile, cdef and pclr data.
@param p_manager the user event manager.
@return true in case of success
*/
static OPJ_BOOL opj_jp2_apply_pclr(opj_image_t *image,
opj_jp2_color_t *color,
opj_event_mgr_t * p_manager);
static void opj_jp2_free_pclr(opj_jp2_color_t *color);
/**
* Collect palette data
*
* @param jp2 JP2 handle
* @param p_pclr_header_data FIXME DOC
* @param p_pclr_header_size FIXME DOC
* @param p_manager
*
* @return Returns true if successful, returns false otherwise
*/
static OPJ_BOOL opj_jp2_read_pclr(opj_jp2_t *jp2,
OPJ_BYTE * p_pclr_header_data,
OPJ_UINT32 p_pclr_header_size,
opj_event_mgr_t * p_manager);
/**
* Collect component mapping data
*
* @param jp2 JP2 handle
* @param p_cmap_header_data FIXME DOC
* @param p_cmap_header_size FIXME DOC
* @param p_manager FIXME DOC
*
* @return Returns true if successful, returns false otherwise
*/
static OPJ_BOOL opj_jp2_read_cmap(opj_jp2_t * jp2,
OPJ_BYTE * p_cmap_header_data,
OPJ_UINT32 p_cmap_header_size,
opj_event_mgr_t * p_manager);
/**
* Reads the Color Specification box.
*
* @param p_colr_header_data pointer to actual data (already read from file)
* @param jp2 the jpeg2000 file codec.
* @param p_colr_header_size the size of the color header
* @param p_manager the user event manager.
*
* @return true if the bpc header is valid, false else.
*/
static OPJ_BOOL opj_jp2_read_colr(opj_jp2_t *jp2,
OPJ_BYTE * p_colr_header_data,
OPJ_UINT32 p_colr_header_size,
opj_event_mgr_t * p_manager);
/*@}*/
/*@}*/
/**
* Sets up the procedures to do on writing header after the codestream.
* Developpers wanting to extend the library can add their own writing procedures.
*/
static OPJ_BOOL opj_jp2_setup_end_header_writing(opj_jp2_t *jp2,
opj_event_mgr_t * p_manager);
/**
* Sets up the procedures to do on reading header after the codestream.
* Developpers wanting to extend the library can add their own writing procedures.
*/
static OPJ_BOOL opj_jp2_setup_end_header_reading(opj_jp2_t *jp2,
opj_event_mgr_t * p_manager);
/**
* Reads a jpeg2000 file header structure.
*
* @param jp2 the jpeg2000 file header structure.
* @param stream the stream to read data from.
* @param p_manager the user event manager.
*
* @return true if the box is valid.
*/
static OPJ_BOOL opj_jp2_read_header_procedure(opj_jp2_t *jp2,
opj_stream_private_t *stream,
opj_event_mgr_t * p_manager);
/**
* Executes the given procedures on the given codec.
*
* @param p_procedure_list the list of procedures to execute
* @param jp2 the jpeg2000 file codec to execute the procedures on.
* @param stream the stream to execute the procedures on.
* @param p_manager the user manager.
*
* @return true if all the procedures were successfully executed.
*/
static OPJ_BOOL opj_jp2_exec(opj_jp2_t * jp2,
opj_procedure_list_t * p_procedure_list,
opj_stream_private_t *stream,
opj_event_mgr_t * p_manager);
/**
* Reads a box header. The box is the way data is packed inside a jpeg2000 file structure.
*
* @param cio the input stream to read data from.
* @param box the box structure to fill.
* @param p_number_bytes_read pointer to an int that will store the number of bytes read from the stream (shoul usually be 2).
* @param p_manager user event manager.
*
* @return true if the box is recognized, false otherwise
*/
static OPJ_BOOL opj_jp2_read_boxhdr(opj_jp2_box_t *box,
OPJ_UINT32 * p_number_bytes_read,
opj_stream_private_t *cio,
opj_event_mgr_t * p_manager);
/**
* Sets up the validation ,i.e. adds the procedures to launch to make sure the codec parameters
* are valid. Developpers wanting to extend the library can add their own validation procedures.
*/
static OPJ_BOOL opj_jp2_setup_encoding_validation(opj_jp2_t *jp2,
opj_event_mgr_t * p_manager);
/**
* Sets up the procedures to do on writing header. Developpers wanting to extend the library can add their own writing procedures.
*/
static OPJ_BOOL opj_jp2_setup_header_writing(opj_jp2_t *jp2,
opj_event_mgr_t * p_manager);
static OPJ_BOOL opj_jp2_default_validation(opj_jp2_t * jp2,
opj_stream_private_t *cio,
opj_event_mgr_t * p_manager);
/**
* Finds the image execution function related to the given box id.
*
* @param p_id the id of the handler to fetch.
*
* @return the given handler or NULL if it could not be found.
*/
static const opj_jp2_header_handler_t * opj_jp2_img_find_handler(
OPJ_UINT32 p_id);
/**
* Finds the execution function related to the given box id.
*
* @param p_id the id of the handler to fetch.
*
* @return the given handler or NULL if it could not be found.
*/
static const opj_jp2_header_handler_t * opj_jp2_find_handler(OPJ_UINT32 p_id);
static const opj_jp2_header_handler_t jp2_header [] = {
{JP2_JP, opj_jp2_read_jp},
{JP2_FTYP, opj_jp2_read_ftyp},
{JP2_JP2H, opj_jp2_read_jp2h}
};
static const opj_jp2_header_handler_t jp2_img_header [] = {
{JP2_IHDR, opj_jp2_read_ihdr},
{JP2_COLR, opj_jp2_read_colr},
{JP2_BPCC, opj_jp2_read_bpcc},
{JP2_PCLR, opj_jp2_read_pclr},
{JP2_CMAP, opj_jp2_read_cmap},
{JP2_CDEF, opj_jp2_read_cdef}
};
/**
* Reads a box header. The box is the way data is packed inside a jpeg2000 file structure. Data is read from a character string
*
* @param box the box structure to fill.
* @param p_data the character string to read data from.
* @param p_number_bytes_read pointer to an int that will store the number of bytes read from the stream (shoul usually be 2).
* @param p_box_max_size the maximum number of bytes in the box.
* @param p_manager FIXME DOC
*
* @return true if the box is recognized, false otherwise
*/
static OPJ_BOOL opj_jp2_read_boxhdr_char(opj_jp2_box_t *box,
OPJ_BYTE * p_data,
OPJ_UINT32 * p_number_bytes_read,
OPJ_UINT32 p_box_max_size,
opj_event_mgr_t * p_manager);
/**
* Sets up the validation ,i.e. adds the procedures to launch to make sure the codec parameters
* are valid. Developpers wanting to extend the library can add their own validation procedures.
*/
static OPJ_BOOL opj_jp2_setup_decoding_validation(opj_jp2_t *jp2,
opj_event_mgr_t * p_manager);
/**
* Sets up the procedures to do on reading header.
* Developpers wanting to extend the library can add their own writing procedures.
*/
static OPJ_BOOL opj_jp2_setup_header_reading(opj_jp2_t *jp2,
opj_event_mgr_t * p_manager);
/* ----------------------------------------------------------------------- */
static OPJ_BOOL opj_jp2_read_boxhdr(opj_jp2_box_t *box,
OPJ_UINT32 * p_number_bytes_read,
opj_stream_private_t *cio,
opj_event_mgr_t * p_manager)
{
/* read header from file */
OPJ_BYTE l_data_header [8];
/* preconditions */
assert(cio != 00);
assert(box != 00);
assert(p_number_bytes_read != 00);
assert(p_manager != 00);
*p_number_bytes_read = (OPJ_UINT32)opj_stream_read_data(cio, l_data_header, 8,
p_manager);
if (*p_number_bytes_read != 8) {
return OPJ_FALSE;
}
/* process read data */
opj_read_bytes(l_data_header, &(box->length), 4);
opj_read_bytes(l_data_header + 4, &(box->type), 4);
if (box->length == 0) { /* last box */
const OPJ_OFF_T bleft = opj_stream_get_number_byte_left(cio);
if (bleft > (OPJ_OFF_T)(0xFFFFFFFFU - 8U)) {
opj_event_msg(p_manager, EVT_ERROR,
"Cannot handle box sizes higher than 2^32\n");
return OPJ_FALSE;
}
box->length = (OPJ_UINT32)bleft + 8U;
assert((OPJ_OFF_T)box->length == bleft + 8);
return OPJ_TRUE;
}
/* do we have a "special very large box ?" */
/* read then the XLBox */
if (box->length == 1) {
OPJ_UINT32 l_xl_part_size;
OPJ_UINT32 l_nb_bytes_read = (OPJ_UINT32)opj_stream_read_data(cio,
l_data_header, 8, p_manager);
if (l_nb_bytes_read != 8) {
if (l_nb_bytes_read > 0) {
*p_number_bytes_read += l_nb_bytes_read;
}
return OPJ_FALSE;
}
*p_number_bytes_read = 16;
opj_read_bytes(l_data_header, &l_xl_part_size, 4);
if (l_xl_part_size != 0) {
opj_event_msg(p_manager, EVT_ERROR,
"Cannot handle box sizes higher than 2^32\n");
return OPJ_FALSE;
}
opj_read_bytes(l_data_header + 4, &(box->length), 4);
}
return OPJ_TRUE;
}
#if 0
static void jp2_write_url(opj_cio_t *cio, char *Idx_file)
{
OPJ_UINT32 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);
}
#endif
static OPJ_BOOL opj_jp2_read_ihdr(opj_jp2_t *jp2,
OPJ_BYTE *p_image_header_data,
OPJ_UINT32 p_image_header_size,
opj_event_mgr_t * p_manager)
{
/* preconditions */
assert(p_image_header_data != 00);
assert(jp2 != 00);
assert(p_manager != 00);
if (jp2->comps != NULL) {
opj_event_msg(p_manager, EVT_WARNING,
"Ignoring ihdr box. First ihdr box already read\n");
return OPJ_TRUE;
}
if (p_image_header_size != 14) {
opj_event_msg(p_manager, EVT_ERROR, "Bad image header box (bad size)\n");
return OPJ_FALSE;
}
opj_read_bytes(p_image_header_data, &(jp2->h), 4); /* HEIGHT */
p_image_header_data += 4;
opj_read_bytes(p_image_header_data, &(jp2->w), 4); /* WIDTH */
p_image_header_data += 4;
opj_read_bytes(p_image_header_data, &(jp2->numcomps), 2); /* NC */
p_image_header_data += 2;
if ((jp2->numcomps - 1U) >=
16384U) { /* unsigned underflow is well defined: 1U <= jp2->numcomps <= 16384U */
opj_event_msg(p_manager, EVT_ERROR, "Invalid number of components (ihdr)\n");
return OPJ_FALSE;
}
/* allocate memory for components */
opj_free(jp2->comps);
jp2->comps = (opj_jp2_comps_t*) opj_calloc(jp2->numcomps,
sizeof(opj_jp2_comps_t));
if (jp2->comps == 0) {
opj_event_msg(p_manager, EVT_ERROR,
"Not enough memory to handle image header (ihdr)\n");
return OPJ_FALSE;
}
opj_read_bytes(p_image_header_data, &(jp2->bpc), 1); /* BPC */
++ p_image_header_data;
opj_read_bytes(p_image_header_data, &(jp2->C), 1); /* C */
++ p_image_header_data;
/* Should be equal to 7 cf. chapter about image header box of the norm */
if (jp2->C != 7) {
opj_event_msg(p_manager, EVT_INFO,
"JP2 IHDR box: compression type indicate that the file is not a conforming JP2 file (%d) \n",
jp2->C);
}
opj_read_bytes(p_image_header_data, &(jp2->UnkC), 1); /* UnkC */
++ p_image_header_data;
opj_read_bytes(p_image_header_data, &(jp2->IPR), 1); /* IPR */
++ p_image_header_data;
jp2->j2k->m_cp.allow_different_bit_depth_sign = (jp2->bpc == 255);
jp2->j2k->ihdr_w = jp2->w;
jp2->j2k->ihdr_h = jp2->h;
jp2->has_ihdr = 1;
return OPJ_TRUE;
}
static OPJ_BYTE * opj_jp2_write_ihdr(opj_jp2_t *jp2,
OPJ_UINT32 * p_nb_bytes_written
)
{
OPJ_BYTE * l_ihdr_data, * l_current_ihdr_ptr;
/* preconditions */
assert(jp2 != 00);
assert(p_nb_bytes_written != 00);
/* default image header is 22 bytes wide */
l_ihdr_data = (OPJ_BYTE *) opj_calloc(1, 22);
if (l_ihdr_data == 00) {
return 00;
}
l_current_ihdr_ptr = l_ihdr_data;
opj_write_bytes(l_current_ihdr_ptr, 22, 4); /* write box size */
l_current_ihdr_ptr += 4;
opj_write_bytes(l_current_ihdr_ptr, JP2_IHDR, 4); /* IHDR */
l_current_ihdr_ptr += 4;
opj_write_bytes(l_current_ihdr_ptr, jp2->h, 4); /* HEIGHT */
l_current_ihdr_ptr += 4;
opj_write_bytes(l_current_ihdr_ptr, jp2->w, 4); /* WIDTH */
l_current_ihdr_ptr += 4;
opj_write_bytes(l_current_ihdr_ptr, jp2->numcomps, 2); /* NC */
l_current_ihdr_ptr += 2;
opj_write_bytes(l_current_ihdr_ptr, jp2->bpc, 1); /* BPC */
++l_current_ihdr_ptr;
opj_write_bytes(l_current_ihdr_ptr, jp2->C, 1); /* C : Always 7 */
++l_current_ihdr_ptr;
opj_write_bytes(l_current_ihdr_ptr, jp2->UnkC,
1); /* UnkC, colorspace unknown */
++l_current_ihdr_ptr;
opj_write_bytes(l_current_ihdr_ptr, jp2->IPR,
1); /* IPR, no intellectual property */
++l_current_ihdr_ptr;
*p_nb_bytes_written = 22;
return l_ihdr_data;
}
static OPJ_BYTE * opj_jp2_write_bpcc(opj_jp2_t *jp2,
OPJ_UINT32 * p_nb_bytes_written
)
{
OPJ_UINT32 i;
/* room for 8 bytes for box and 1 byte for each component */
OPJ_UINT32 l_bpcc_size;
OPJ_BYTE * l_bpcc_data, * l_current_bpcc_ptr;
/* preconditions */
assert(jp2 != 00);
assert(p_nb_bytes_written != 00);
l_bpcc_size = 8 + jp2->numcomps;
l_bpcc_data = (OPJ_BYTE *) opj_calloc(1, l_bpcc_size);
if (l_bpcc_data == 00) {
return 00;
}
l_current_bpcc_ptr = l_bpcc_data;
opj_write_bytes(l_current_bpcc_ptr, l_bpcc_size,
4); /* write box size */
l_current_bpcc_ptr += 4;
opj_write_bytes(l_current_bpcc_ptr, JP2_BPCC, 4); /* BPCC */
l_current_bpcc_ptr += 4;
for (i = 0; i < jp2->numcomps; ++i) {
opj_write_bytes(l_current_bpcc_ptr, jp2->comps[i].bpcc,
1); /* write each component information */
++l_current_bpcc_ptr;
}
*p_nb_bytes_written = l_bpcc_size;
return l_bpcc_data;
}
static OPJ_BOOL opj_jp2_read_bpcc(opj_jp2_t *jp2,
OPJ_BYTE * p_bpc_header_data,
OPJ_UINT32 p_bpc_header_size,
opj_event_mgr_t * p_manager
)
{
OPJ_UINT32 i;
/* preconditions */
assert(p_bpc_header_data != 00);
assert(jp2 != 00);
assert(p_manager != 00);
if (jp2->bpc != 255) {
opj_event_msg(p_manager, EVT_WARNING,
"A BPCC header box is available although BPC given by the IHDR box (%d) indicate components bit depth is constant\n",
jp2->bpc);
}
/* and length is relevant */
if (p_bpc_header_size != jp2->numcomps) {
opj_event_msg(p_manager, EVT_ERROR, "Bad BPCC header box (bad size)\n");
return OPJ_FALSE;
}
/* read info for each component */
for (i = 0; i < jp2->numcomps; ++i) {
opj_read_bytes(p_bpc_header_data, &jp2->comps[i].bpcc,
1); /* read each BPCC component */
++p_bpc_header_data;
}
return OPJ_TRUE;
}
static OPJ_BYTE * opj_jp2_write_cdef(opj_jp2_t *jp2,
OPJ_UINT32 * p_nb_bytes_written)
{
/* room for 8 bytes for box, 2 for n */
OPJ_UINT32 l_cdef_size = 10;
OPJ_BYTE * l_cdef_data, * l_current_cdef_ptr;
OPJ_UINT32 l_value;
OPJ_UINT16 i;
/* preconditions */
assert(jp2 != 00);
assert(p_nb_bytes_written != 00);
assert(jp2->color.jp2_cdef != 00);
assert(jp2->color.jp2_cdef->info != 00);
assert(jp2->color.jp2_cdef->n > 0U);
l_cdef_size += 6U * jp2->color.jp2_cdef->n;
l_cdef_data = (OPJ_BYTE *) opj_malloc(l_cdef_size);
if (l_cdef_data == 00) {
return 00;
}
l_current_cdef_ptr = l_cdef_data;
opj_write_bytes(l_current_cdef_ptr, l_cdef_size, 4); /* write box size */
l_current_cdef_ptr += 4;
opj_write_bytes(l_current_cdef_ptr, JP2_CDEF, 4); /* BPCC */
l_current_cdef_ptr += 4;
l_value = jp2->color.jp2_cdef->n;
opj_write_bytes(l_current_cdef_ptr, l_value, 2); /* N */
l_current_cdef_ptr += 2;
for (i = 0U; i < jp2->color.jp2_cdef->n; ++i) {
l_value = jp2->color.jp2_cdef->info[i].cn;
opj_write_bytes(l_current_cdef_ptr, l_value, 2); /* Cni */
l_current_cdef_ptr += 2;
l_value = jp2->color.jp2_cdef->info[i].typ;
opj_write_bytes(l_current_cdef_ptr, l_value, 2); /* Typi */
l_current_cdef_ptr += 2;
l_value = jp2->color.jp2_cdef->info[i].asoc;
opj_write_bytes(l_current_cdef_ptr, l_value, 2); /* Asoci */
l_current_cdef_ptr += 2;
}
*p_nb_bytes_written = l_cdef_size;
return l_cdef_data;
}
static OPJ_BYTE * opj_jp2_write_colr(opj_jp2_t *jp2,
OPJ_UINT32 * p_nb_bytes_written
)
{
/* room for 8 bytes for box 3 for common data and variable upon profile*/
OPJ_UINT32 l_colr_size = 11;
OPJ_BYTE * l_colr_data, * l_current_colr_ptr;
/* preconditions */
assert(jp2 != 00);
assert(p_nb_bytes_written != 00);
assert(jp2->meth == 1 || jp2->meth == 2);
switch (jp2->meth) {
case 1 :
l_colr_size += 4; /* EnumCS */
break;
case 2 :
assert(jp2->color.icc_profile_len); /* ICC profile */
l_colr_size += jp2->color.icc_profile_len;
break;
default :
return 00;
}
l_colr_data = (OPJ_BYTE *) opj_calloc(1, l_colr_size);
if (l_colr_data == 00) {
return 00;
}
l_current_colr_ptr = l_colr_data;
opj_write_bytes(l_current_colr_ptr, l_colr_size,
4); /* write box size */
l_current_colr_ptr += 4;
opj_write_bytes(l_current_colr_ptr, JP2_COLR, 4); /* BPCC */
l_current_colr_ptr += 4;
opj_write_bytes(l_current_colr_ptr, jp2->meth, 1); /* METH */
++l_current_colr_ptr;
opj_write_bytes(l_current_colr_ptr, jp2->precedence, 1); /* PRECEDENCE */
++l_current_colr_ptr;
opj_write_bytes(l_current_colr_ptr, jp2->approx, 1); /* APPROX */
++l_current_colr_ptr;
if (jp2->meth ==
1) { /* Meth value is restricted to 1 or 2 (Table I.9 of part 1) */
opj_write_bytes(l_current_colr_ptr, jp2->enumcs, 4);
} /* EnumCS */
else {
if (jp2->meth == 2) { /* ICC profile */
OPJ_UINT32 i;
for (i = 0; i < jp2->color.icc_profile_len; ++i) {
opj_write_bytes(l_current_colr_ptr, jp2->color.icc_profile_buf[i], 1);
++l_current_colr_ptr;
}
}
}
*p_nb_bytes_written = l_colr_size;
return l_colr_data;
}
static void opj_jp2_free_pclr(opj_jp2_color_t *color)
{
opj_free(color->jp2_pclr->channel_sign);
opj_free(color->jp2_pclr->channel_size);
opj_free(color->jp2_pclr->entries);
if (color->jp2_pclr->cmap) {
opj_free(color->jp2_pclr->cmap);
}
opj_free(color->jp2_pclr);
color->jp2_pclr = NULL;
}
static OPJ_BOOL opj_jp2_check_color(opj_image_t *image, opj_jp2_color_t *color,
opj_event_mgr_t *p_manager)
{
OPJ_UINT16 i;
/* testcase 4149.pdf.SIGSEGV.cf7.3501 */
if (color->jp2_cdef) {
opj_jp2_cdef_info_t *info = color->jp2_cdef->info;
OPJ_UINT16 n = color->jp2_cdef->n;
OPJ_UINT32 nr_channels =
image->numcomps; /* FIXME image->numcomps == jp2->numcomps before color is applied ??? */
/* cdef applies to cmap channels if any */
if (color->jp2_pclr && color->jp2_pclr->cmap) {
nr_channels = (OPJ_UINT32)color->jp2_pclr->nr_channels;
}
for (i = 0; i < n; i++) {
if (info[i].cn >= nr_channels) {
opj_event_msg(p_manager, EVT_ERROR, "Invalid component index %d (>= %d).\n",
info[i].cn, nr_channels);
return OPJ_FALSE;
}
if (info[i].asoc == 65535U) {
continue;
}
if (info[i].asoc > 0 && (OPJ_UINT32)(info[i].asoc - 1) >= nr_channels) {
opj_event_msg(p_manager, EVT_ERROR, "Invalid component index %d (>= %d).\n",
info[i].asoc - 1, nr_channels);
return OPJ_FALSE;
}
}
/* issue 397 */
/* ISO 15444-1 states that if cdef is present, it shall contain a complete list of channel definitions. */
while (nr_channels > 0) {
for (i = 0; i < n; ++i) {
if ((OPJ_UINT32)info[i].cn == (nr_channels - 1U)) {
break;
}
}
if (i == n) {
opj_event_msg(p_manager, EVT_ERROR, "Incomplete channel definitions.\n");
return OPJ_FALSE;
}
--nr_channels;
}
}
/* testcases 451.pdf.SIGSEGV.f4c.3723, 451.pdf.SIGSEGV.5b5.3723 and
66ea31acbb0f23a2bbc91f64d69a03f5_signal_sigsegv_13937c0_7030_5725.pdf */
if (color->jp2_pclr && color->jp2_pclr->cmap) {
OPJ_UINT16 nr_channels = color->jp2_pclr->nr_channels;
opj_jp2_cmap_comp_t *cmap = color->jp2_pclr->cmap;
OPJ_BOOL *pcol_usage, is_sane = OPJ_TRUE;
/* verify that all original components match an existing one */
for (i = 0; i < nr_channels; i++) {
if (cmap[i].cmp >= image->numcomps) {
opj_event_msg(p_manager, EVT_ERROR, "Invalid component index %d (>= %d).\n",
cmap[i].cmp, image->numcomps);
is_sane = OPJ_FALSE;
}
}
pcol_usage = (OPJ_BOOL *) opj_calloc(nr_channels, sizeof(OPJ_BOOL));
if (!pcol_usage) {
opj_event_msg(p_manager, EVT_ERROR, "Unexpected OOM.\n");
return OPJ_FALSE;
}
/* verify that no component is targeted more than once */
for (i = 0; i < nr_channels; i++) {
OPJ_BYTE mtyp = cmap[i].mtyp;
OPJ_BYTE pcol = cmap[i].pcol;
/* See ISO 15444-1 Table I.14 – MTYPi field values */
if (mtyp != 0 && mtyp != 1) {
opj_event_msg(p_manager, EVT_ERROR,
"Invalid value for cmap[%d].mtyp = %d.\n", i,
mtyp);
is_sane = OPJ_FALSE;
} else if (pcol >= nr_channels) {
opj_event_msg(p_manager, EVT_ERROR,
"Invalid component/palette index for direct mapping %d.\n", pcol);
is_sane = OPJ_FALSE;
} else if (pcol_usage[pcol] && mtyp == 1) {
opj_event_msg(p_manager, EVT_ERROR, "Component %d is mapped twice.\n", pcol);
is_sane = OPJ_FALSE;
} else if (mtyp == 0 && pcol != 0) {
/* I.5.3.5 PCOL: If the value of the MTYP field for this channel is 0, then
* the value of this field shall be 0. */
opj_event_msg(p_manager, EVT_ERROR, "Direct use at #%d however pcol=%d.\n", i,
pcol);
is_sane = OPJ_FALSE;
} else if (mtyp == 1 && pcol != i) {
/* OpenJPEG implementation limitation. See assert(i == pcol); */
/* in opj_jp2_apply_pclr() */
opj_event_msg(p_manager, EVT_ERROR,
"Implementation limitation: for palette mapping, "
"pcol[%d] should be equal to %d, but is equal "
"to %d.\n", i, i, pcol);
is_sane = OPJ_FALSE;
} else {
pcol_usage[pcol] = OPJ_TRUE;
}
}
/* verify that all components are targeted at least once */
for (i = 0; i < nr_channels; i++) {
if (!pcol_usage[i] && cmap[i].mtyp != 0) {
opj_event_msg(p_manager, EVT_ERROR, "Component %d doesn't have a mapping.\n",
i);
is_sane = OPJ_FALSE;
}
}
/* Issue 235/447 weird cmap */
if (1 && is_sane && (image->numcomps == 1U)) {
for (i = 0; i < nr_channels; i++) {
if (!pcol_usage[i]) {
is_sane = 0U;
opj_event_msg(p_manager, EVT_WARNING,
"Component mapping seems wrong. Trying to correct.\n", i);
break;
}
}
if (!is_sane) {
is_sane = OPJ_TRUE;
for (i = 0; i < nr_channels; i++) {
cmap[i].mtyp = 1U;
cmap[i].pcol = (OPJ_BYTE) i;
}
}
}
opj_free(pcol_usage);
if (!is_sane) {
return OPJ_FALSE;
}
}
return OPJ_TRUE;
}
/* file9.jp2 */
static OPJ_BOOL opj_jp2_apply_pclr(opj_image_t *image,
opj_jp2_color_t *color,
opj_event_mgr_t * p_manager)
{
opj_image_comp_t *old_comps, *new_comps;
OPJ_BYTE *channel_size, *channel_sign;
OPJ_UINT32 *entries;
opj_jp2_cmap_comp_t *cmap;
OPJ_INT32 *src, *dst;
OPJ_UINT32 j, max;
OPJ_UINT16 i, nr_channels, cmp, pcol;
OPJ_INT32 k, top_k;
channel_size = color->jp2_pclr->channel_size;
channel_sign = color->jp2_pclr->channel_sign;
entries = color->jp2_pclr->entries;
cmap = color->jp2_pclr->cmap;
nr_channels = color->jp2_pclr->nr_channels;
for (i = 0; i < nr_channels; ++i) {
/* Palette mapping: */
cmp = cmap[i].cmp;
if (image->comps[cmp].data == NULL) {
opj_event_msg(p_manager, EVT_ERROR,
"image->comps[%d].data == NULL in opj_jp2_apply_pclr().\n", i);
return OPJ_FALSE;
}
}
old_comps = image->comps;
/* Overflow check: prevent integer overflow */
for (i = 0; i < nr_channels; ++i) {
cmp = cmap[i].cmp;
if (old_comps[cmp].h == 0 || old_comps[cmp].w > ((OPJ_UINT32)-1) / sizeof(OPJ_INT32) / old_comps[cmp].h) {
return OPJ_FALSE;
}
}
new_comps = (opj_image_comp_t*)
opj_malloc(nr_channels * sizeof(opj_image_comp_t));
if (!new_comps) {
opj_event_msg(p_manager, EVT_ERROR,
"Memory allocation failure in opj_jp2_apply_pclr().\n");
return OPJ_FALSE;
}
for (i = 0; i < nr_channels; ++i) {
pcol = cmap[i].pcol;
cmp = cmap[i].cmp;
/* Direct use */
if (cmap[i].mtyp == 0) {
assert(pcol == 0);
new_comps[i] = old_comps[cmp];
} else {
assert( i == pcol ); // probably wrong?
new_comps[i] = old_comps[cmp];
}
/* Palette mapping: */
new_comps[i].data = (OPJ_INT32*)
opj_image_data_alloc(old_comps[cmp].w * old_comps[cmp].h * sizeof(OPJ_INT32));
if (!new_comps[i].data) {
while (i > 0) {
-- i;
opj_image_data_free(new_comps[i].data);
}
opj_free(new_comps);
opj_event_msg(p_manager, EVT_ERROR,
"Memory allocation failure in opj_jp2_apply_pclr().\n");
return OPJ_FALSE;
}
new_comps[i].prec = channel_size[i];
new_comps[i].sgnd = channel_sign[i];
}
top_k = color->jp2_pclr->nr_entries - 1;
for (i = 0; i < nr_channels; ++i) {
/* Palette mapping: */
cmp = cmap[i].cmp;
pcol = cmap[i].pcol;
src = old_comps[cmp].data;
dst = new_comps[i].data;
max = new_comps[i].w * new_comps[i].h;
/* Prevent null pointer access */
if (!src || !dst) {
for (j = 0; j < nr_channels; ++j) {
opj_image_data_free(new_comps[j].data);
}
opj_free(new_comps);
new_comps = NULL;
return OPJ_FALSE;
}
/* Direct use: */
if (cmap[i].mtyp == 0) {
assert( cmp == 0 ); // probably wrong.
for (j = 0; j < max; ++j) {
dst[j] = src[j];
}
} else {
assert( i == pcol ); // probably wrong?
for (j = 0; j < max; ++j) {
/* The index */
if ((k = src[j]) < 0) {
k = 0;
} else if (k > top_k) {
k = top_k;
}
/* The colour */
dst[j] = (OPJ_INT32)entries[k * nr_channels + pcol];
}
}
}
max = image->numcomps;
for (i = 0; i < max; ++i) {
if (old_comps[i].data) {
opj_image_data_free(old_comps[i].data);
}
}
opj_free(old_comps);
image->comps = new_comps;
image->numcomps = nr_channels;
return OPJ_TRUE;
}/* apply_pclr() */
static OPJ_BOOL opj_jp2_read_pclr(opj_jp2_t *jp2,
OPJ_BYTE * p_pclr_header_data,
OPJ_UINT32 p_pclr_header_size,
opj_event_mgr_t * p_manager
)
{
opj_jp2_pclr_t *jp2_pclr;
OPJ_BYTE *channel_size, *channel_sign;
OPJ_UINT32 *entries;
OPJ_UINT16 nr_entries, nr_channels;
OPJ_UINT16 i, j;
OPJ_UINT32 l_value;
OPJ_BYTE *orig_header_data = p_pclr_header_data;
/* preconditions */
assert(p_pclr_header_data != 00);
assert(jp2 != 00);
assert(p_manager != 00);
(void)p_pclr_header_size;
if (jp2->color.jp2_pclr) {
return OPJ_FALSE;
}
if (p_pclr_header_size < 3) {
return OPJ_FALSE;
}
opj_read_bytes(p_pclr_header_data, &l_value, 2); /* NE */
p_pclr_header_data += 2;
nr_entries = (OPJ_UINT16) l_value;
if ((nr_entries == 0U) || (nr_entries > 1024U)) {
opj_event_msg(p_manager, EVT_ERROR, "Invalid PCLR box. Reports %d entries\n",
(int)nr_entries);
return OPJ_FALSE;
}
opj_read_bytes(p_pclr_header_data, &l_value, 1); /* NPC */
++p_pclr_header_data;
nr_channels = (OPJ_UINT16) l_value;
if (nr_channels == 0U) {
opj_event_msg(p_manager, EVT_ERROR,
"Invalid PCLR box. Reports 0 palette columns\n");
return OPJ_FALSE;
}
if (p_pclr_header_size < 3 + (OPJ_UINT32)nr_channels) {
return OPJ_FALSE;
}
entries = (OPJ_UINT32*) opj_malloc((size_t)nr_channels * nr_entries * sizeof(
OPJ_UINT32));
if (!entries) {
return OPJ_FALSE;
}
channel_size = (OPJ_BYTE*) opj_malloc(nr_channels);
if (!channel_size) {
opj_free(entries);
return OPJ_FALSE;
}
channel_sign = (OPJ_BYTE*) opj_malloc(nr_channels);
if (!channel_sign) {
opj_free(entries);
opj_free(channel_size);
return OPJ_FALSE;
}
jp2_pclr = (opj_jp2_pclr_t*)opj_malloc(sizeof(opj_jp2_pclr_t));
if (!jp2_pclr) {
opj_free(entries);
opj_free(channel_size);
opj_free(channel_sign);
return OPJ_FALSE;
}
jp2_pclr->channel_sign = channel_sign;
jp2_pclr->channel_size = channel_size;
jp2_pclr->entries = entries;
jp2_pclr->nr_entries = nr_entries;
jp2_pclr->nr_channels = (OPJ_BYTE) l_value;
jp2_pclr->cmap = NULL;
jp2->color.jp2_pclr = jp2_pclr;
for (i = 0; i < nr_channels; ++i) {
opj_read_bytes(p_pclr_header_data, &l_value, 1); /* Bi */
++p_pclr_header_data;
channel_size[i] = (OPJ_BYTE)((l_value & 0x7f) + 1);
channel_sign[i] = (l_value & 0x80) ? 1 : 0;
}
for (j = 0; j < nr_entries; ++j) {
for (i = 0; i < nr_channels; ++i) {
OPJ_UINT32 bytes_to_read = (OPJ_UINT32)((channel_size[i] + 7) >> 3);
if (bytes_to_read > sizeof(OPJ_UINT32)) {
bytes_to_read = sizeof(OPJ_UINT32);
}
if ((ptrdiff_t)p_pclr_header_size < (ptrdiff_t)(p_pclr_header_data -
orig_header_data) + (ptrdiff_t)bytes_to_read) {
return OPJ_FALSE;
}
opj_read_bytes(p_pclr_header_data, &l_value, bytes_to_read); /* Cji */
p_pclr_header_data += bytes_to_read;
*entries = (OPJ_UINT32) l_value;
entries++;
}
}
return OPJ_TRUE;
}
static OPJ_BOOL opj_jp2_read_cmap(opj_jp2_t * jp2,
OPJ_BYTE * p_cmap_header_data,
OPJ_UINT32 p_cmap_header_size,
opj_event_mgr_t * p_manager
)
{
opj_jp2_cmap_comp_t *cmap;
OPJ_BYTE i, nr_channels;
OPJ_UINT32 l_value;
/* preconditions */
assert(jp2 != 00);
assert(p_cmap_header_data != 00);
assert(p_manager != 00);
(void)p_cmap_header_size;
/* Need nr_channels: */
if (jp2->color.jp2_pclr == NULL) {
opj_event_msg(p_manager, EVT_ERROR,
"Need to read a PCLR box before the CMAP box.\n");
return OPJ_FALSE;
}
/* Part 1, I.5.3.5: 'There shall be at most one Component Mapping box
* inside a JP2 Header box' :
*/
if (jp2->color.jp2_pclr->cmap) {
opj_event_msg(p_manager, EVT_ERROR, "Only one CMAP box is allowed.\n");
return OPJ_FALSE;
}
nr_channels = jp2->color.jp2_pclr->nr_channels;
if (p_cmap_header_size < (OPJ_UINT32)nr_channels * 4) {
opj_event_msg(p_manager, EVT_ERROR, "Insufficient data for CMAP box.\n");
return OPJ_FALSE;
}
cmap = (opj_jp2_cmap_comp_t*) opj_malloc(nr_channels * sizeof(
opj_jp2_cmap_comp_t));
if (!cmap) {
return OPJ_FALSE;
}
for (i = 0; i < nr_channels; ++i) {
opj_read_bytes_BE(p_cmap_header_data, &l_value, 2); /* CMP^i */
p_cmap_header_data += 2;
cmap[i].cmp = (OPJ_UINT16) l_value;
opj_read_bytes(p_cmap_header_data, &l_value, 1); /* MTYP^i */
++p_cmap_header_data;
cmap[i].mtyp = (OPJ_BYTE) l_value;
opj_read_bytes(p_cmap_header_data, &l_value, 1); /* PCOL^i */
++p_cmap_header_data;
cmap[i].pcol = (OPJ_BYTE) l_value;
}
jp2->color.jp2_pclr->cmap = cmap;
return OPJ_TRUE;
}
static void opj_jp2_apply_cdef(opj_image_t *image, opj_jp2_color_t *color,
opj_event_mgr_t *manager)
{
opj_jp2_cdef_info_t *info;
OPJ_UINT16 i, n, cn, asoc, acn;
info = color->jp2_cdef->info;
n = color->jp2_cdef->n;
for (i = 0; i < n; ++i) {
/* WATCH: acn = asoc - 1 ! */
asoc = info[i].asoc;
cn = info[i].cn;
if (cn >= image->numcomps) {
opj_event_msg(manager, EVT_WARNING, "opj_jp2_apply_cdef: cn=%d, numcomps=%d\n",
cn, image->numcomps);
continue;
}
if (asoc == 0 || asoc == 65535) {
image->comps[cn].alpha = info[i].typ;
continue;
}
acn = (OPJ_UINT16)(asoc - 1);
if (acn >= image->numcomps) {
opj_event_msg(manager, EVT_WARNING, "opj_jp2_apply_cdef: acn=%d, numcomps=%d\n",
acn, image->numcomps);
continue;
}
/* Swap only if color channel */
if ((cn != acn) && (info[i].typ == 0)) {
opj_image_comp_t saved;
OPJ_UINT16 j;
memcpy(&saved, &image->comps[cn], sizeof(opj_image_comp_t));
memcpy(&image->comps[cn], &image->comps[acn], sizeof(opj_image_comp_t));
memcpy(&image->comps[acn], &saved, sizeof(opj_image_comp_t));
/* Swap channels in following channel definitions, don't bother with j <= i that are already processed */
for (j = (OPJ_UINT16)(i + 1U); j < n ; ++j) {
if (info[j].cn == cn) {
info[j].cn = acn;
} else if (info[j].cn == acn) {
info[j].cn = cn;
}
/* asoc is related to color index. Do not update. */
}
}
image->comps[cn].alpha = info[i].typ;
}
if (color->jp2_cdef->info) {
opj_free(color->jp2_cdef->info);
}
opj_free(color->jp2_cdef);
color->jp2_cdef = NULL;
}/* jp2_apply_cdef() */
static OPJ_BOOL opj_jp2_read_cdef(opj_jp2_t * jp2,
OPJ_BYTE * p_cdef_header_data,
OPJ_UINT32 p_cdef_header_size,
opj_event_mgr_t * p_manager
)
{
opj_jp2_cdef_info_t *cdef_info;
OPJ_UINT16 i;
OPJ_UINT32 l_value;
/* preconditions */
assert(jp2 != 00);
assert(p_cdef_header_data != 00);
assert(p_manager != 00);
(void)p_cdef_header_size;
/* Part 1, I.5.3.6: 'The shall be at most one Channel Definition box
* inside a JP2 Header box.'*/
if (jp2->color.jp2_cdef) {
return OPJ_FALSE;
}
if (p_cdef_header_size < 2) {
opj_event_msg(p_manager, EVT_ERROR, "Insufficient data for CDEF box.\n");
return OPJ_FALSE;
}
opj_read_bytes(p_cdef_header_data, &l_value, 2); /* N */
p_cdef_header_data += 2;
if ((OPJ_UINT16)l_value == 0) { /* szukw000: FIXME */
opj_event_msg(p_manager, EVT_ERROR,
"Number of channel description is equal to zero in CDEF box.\n");
return OPJ_FALSE;
}
if (p_cdef_header_size < 2 + (OPJ_UINT32)(OPJ_UINT16)l_value * 6) {
opj_event_msg(p_manager, EVT_ERROR, "Insufficient data for CDEF box.\n");
return OPJ_FALSE;
}
cdef_info = (opj_jp2_cdef_info_t*) opj_malloc(l_value * sizeof(
opj_jp2_cdef_info_t));
if (!cdef_info) {
return OPJ_FALSE;
}
jp2->color.jp2_cdef = (opj_jp2_cdef_t*)opj_malloc(sizeof(opj_jp2_cdef_t));
if (!jp2->color.jp2_cdef) {
opj_free(cdef_info);
return OPJ_FALSE;
}
jp2->color.jp2_cdef->info = cdef_info;
jp2->color.jp2_cdef->n = (OPJ_UINT16) l_value;
for (i = 0; i < jp2->color.jp2_cdef->n; ++i) {
opj_read_bytes(p_cdef_header_data, &l_value, 2); /* Cn^i */
p_cdef_header_data += 2;
cdef_info[i].cn = (OPJ_UINT16) l_value;
opj_read_bytes(p_cdef_header_data, &l_value, 2); /* Typ^i */
p_cdef_header_data += 2;
cdef_info[i].typ = (OPJ_UINT16) l_value;
opj_read_bytes(p_cdef_header_data, &l_value, 2); /* Asoc^i */
p_cdef_header_data += 2;
cdef_info[i].asoc = (OPJ_UINT16) l_value;
}
return OPJ_TRUE;
}
static OPJ_BOOL opj_jp2_read_colr(opj_jp2_t *jp2,
OPJ_BYTE * p_colr_header_data,
OPJ_UINT32 p_colr_header_size,
opj_event_mgr_t * p_manager
)
{
OPJ_UINT32 l_value;
/* preconditions */
assert(jp2 != 00);
assert(p_colr_header_data != 00);
assert(p_manager != 00);
if (p_colr_header_size < 3) {
opj_event_msg(p_manager, EVT_ERROR, "Bad COLR header box (bad size)\n");
return OPJ_FALSE;
}
/* Part 1, I.5.3.3 : 'A conforming JP2 reader shall ignore all Colour
* Specification boxes after the first.'
*/
if (jp2->color.jp2_has_colr) {
opj_event_msg(p_manager, EVT_INFO,
"A conforming JP2 reader shall ignore all Colour Specification boxes after the first, so we ignore this one.\n");
p_colr_header_data += p_colr_header_size;
return OPJ_TRUE;
}
opj_read_bytes(p_colr_header_data, &jp2->meth, 1); /* METH */
++p_colr_header_data;
opj_read_bytes(p_colr_header_data, &jp2->precedence, 1); /* PRECEDENCE */
++p_colr_header_data;
opj_read_bytes(p_colr_header_data, &jp2->approx, 1); /* APPROX */
++p_colr_header_data;
if (jp2->meth == 1) {
if (p_colr_header_size < 7) {
opj_event_msg(p_manager, EVT_ERROR, "Bad COLR header box (bad size: %d)\n",
p_colr_header_size);
return OPJ_FALSE;
}
if ((p_colr_header_size > 7) &&
(jp2->enumcs != 14)) { /* handled below for CIELab) */
/* testcase Altona_Technical_v20_x4.pdf */
opj_event_msg(p_manager, EVT_WARNING, "Bad COLR header box (bad size: %d)\n",
p_colr_header_size);
}
opj_read_bytes(p_colr_header_data, &jp2->enumcs, 4); /* EnumCS */
p_colr_header_data += 4;
if (jp2->enumcs == 14) { /* CIELab */
OPJ_UINT32 *cielab;
OPJ_UINT32 rl, ol, ra, oa, rb, ob, il;
cielab = (OPJ_UINT32*)opj_malloc(9 * sizeof(OPJ_UINT32));
if (cielab == NULL) {
opj_event_msg(p_manager, EVT_ERROR, "Not enough memory for cielab\n");
return OPJ_FALSE;
}
cielab[0] = 14; /* enumcs */
/* default values */
rl = ra = rb = ol = oa = ob = 0;
il = 0x00443530; /* D50 */
cielab[1] = 0x44454600;/* DEF */
if (p_colr_header_size == 35) {
opj_read_bytes(p_colr_header_data, &rl, 4);
p_colr_header_data += 4;
opj_read_bytes(p_colr_header_data, &ol, 4);
p_colr_header_data += 4;
opj_read_bytes(p_colr_header_data, &ra, 4);
p_colr_header_data += 4;
opj_read_bytes(p_colr_header_data, &oa, 4);
p_colr_header_data += 4;
opj_read_bytes(p_colr_header_data, &rb, 4);
p_colr_header_data += 4;
opj_read_bytes(p_colr_header_data, &ob, 4);
p_colr_header_data += 4;
opj_read_bytes(p_colr_header_data, &il, 4);
p_colr_header_data += 4;
cielab[1] = 0;
} else if (p_colr_header_size != 7) {
opj_event_msg(p_manager, EVT_WARNING,
"Bad COLR header box (CIELab, bad size: %d)\n", p_colr_header_size);
}
cielab[2] = rl;
cielab[4] = ra;
cielab[6] = rb;
cielab[3] = ol;
cielab[5] = oa;
cielab[7] = ob;
cielab[8] = il;
jp2->color.icc_profile_buf = (OPJ_BYTE*)cielab;
jp2->color.icc_profile_len = 0;
}
jp2->color.jp2_has_colr = 1;
} else if (jp2->meth == 2) {
/* ICC profile */
OPJ_INT32 it_icc_value = 0;
OPJ_INT32 icc_len = (OPJ_INT32)p_colr_header_size - 3;
jp2->color.icc_profile_len = (OPJ_UINT32)icc_len;
jp2->color.icc_profile_buf = (OPJ_BYTE*) opj_calloc(1, (size_t)icc_len);
if (!jp2->color.icc_profile_buf) {
jp2->color.icc_profile_len = 0;
return OPJ_FALSE;
}
for (it_icc_value = 0; it_icc_value < icc_len; ++it_icc_value) {
opj_read_bytes(p_colr_header_data, &l_value, 1); /* icc values */
++p_colr_header_data;
jp2->color.icc_profile_buf[it_icc_value] = (OPJ_BYTE) l_value;
}
jp2->color.jp2_has_colr = 1;
} else if (jp2->meth > 2) {
/* ISO/IEC 15444-1:2004 (E), Table I.9 Legal METH values:
conforming JP2 reader shall ignore the entire Colour Specification box.*/
opj_event_msg(p_manager, EVT_INFO,
"COLR BOX meth value is not a regular value (%d), "
"so we will ignore the entire Colour Specification box. \n", jp2->meth);
}
if (jp2->color.jp2_has_colr) {
jp2->j2k->enumcs = jp2->enumcs;
}
return OPJ_TRUE;
}
OPJ_BOOL opj_jp2_decode(opj_jp2_t *jp2,
opj_stream_private_t *p_stream,
opj_image_t* p_image,
opj_event_mgr_t * p_manager)
{
if (!p_image) {
return OPJ_FALSE;
}
/* J2K decoding */
if (! opj_j2k_decode(jp2->j2k, p_stream, p_image, p_manager)) {
opj_event_msg(p_manager, EVT_ERROR,
"Failed to decode the codestream in the JP2 file\n");
return OPJ_FALSE;
}
if (jp2->j2k->m_specific_param.m_decoder.m_numcomps_to_decode) {
/* Bypass all JP2 component transforms */
return OPJ_TRUE;
}
if (!jp2->ignore_pclr_cmap_cdef) {
if (!opj_jp2_check_color(p_image, &(jp2->color), p_manager)) {
return OPJ_FALSE;
}
/* Set Image Color Space */
if (jp2->enumcs == 16) {
p_image->color_space = OPJ_CLRSPC_SRGB;
} else if (jp2->enumcs == 17) {
p_image->color_space = OPJ_CLRSPC_GRAY;
} else if (jp2->enumcs == 18) {
p_image->color_space = OPJ_CLRSPC_SYCC;
} else if (jp2->enumcs == 24) {
p_image->color_space = OPJ_CLRSPC_EYCC;
} else if (jp2->enumcs == 12) {
p_image->color_space = OPJ_CLRSPC_CMYK;
} else {
p_image->color_space = OPJ_CLRSPC_UNKNOWN;
}
if (jp2->color.jp2_pclr) {
/* Part 1, I.5.3.4: Either both or none : */
if (!jp2->color.jp2_pclr->cmap) {
opj_jp2_free_pclr(&(jp2->color));
} else if (p_image->pdfium_use_colorspace) {
if (!opj_jp2_apply_pclr(p_image, &(jp2->color), p_manager)) {
return OPJ_FALSE;
}
}
}
/* Apply the color space if needed */
if (jp2->color.jp2_cdef) {
opj_jp2_apply_cdef(p_image, &(jp2->color), p_manager);
}
if (jp2->color.icc_profile_buf) {
p_image->icc_profile_buf = jp2->color.icc_profile_buf;
p_image->icc_profile_len = jp2->color.icc_profile_len;
jp2->color.icc_profile_buf = NULL;
}
}
return OPJ_TRUE;
}
static OPJ_BOOL opj_jp2_write_jp2h(opj_jp2_t *jp2,
opj_stream_private_t *stream,
opj_event_mgr_t * p_manager
)
{
opj_jp2_img_header_writer_handler_t l_writers [4];
opj_jp2_img_header_writer_handler_t * l_current_writer;
OPJ_INT32 i, l_nb_pass;
/* size of data for super box*/
OPJ_UINT32 l_jp2h_size = 8;
OPJ_BOOL l_result = OPJ_TRUE;
/* to store the data of the super box */
OPJ_BYTE l_jp2h_data [8];
/* preconditions */
assert(stream != 00);
assert(jp2 != 00);
assert(p_manager != 00);
memset(l_writers, 0, sizeof(l_writers));
if (jp2->bpc == 255) {
l_nb_pass = 3;
l_writers[0].handler = opj_jp2_write_ihdr;
l_writers[1].handler = opj_jp2_write_bpcc;
l_writers[2].handler = opj_jp2_write_colr;
} else {
l_nb_pass = 2;
l_writers[0].handler = opj_jp2_write_ihdr;
l_writers[1].handler = opj_jp2_write_colr;
}
if (jp2->color.jp2_cdef != NULL) {
l_writers[l_nb_pass].handler = opj_jp2_write_cdef;
l_nb_pass++;
}
/* write box header */
/* write JP2H type */
opj_write_bytes(l_jp2h_data + 4, JP2_JP2H, 4);
l_current_writer = l_writers;
for (i = 0; i < l_nb_pass; ++i) {
l_current_writer->m_data = l_current_writer->handler(jp2,
&(l_current_writer->m_size));
if (l_current_writer->m_data == 00) {
opj_event_msg(p_manager, EVT_ERROR,
"Not enough memory to hold JP2 Header data\n");
l_result = OPJ_FALSE;
break;
}
l_jp2h_size += l_current_writer->m_size;
++l_current_writer;
}
if (! l_result) {
l_current_writer = l_writers;
for (i = 0; i < l_nb_pass; ++i) {
if (l_current_writer->m_data != 00) {
opj_free(l_current_writer->m_data);
}
++l_current_writer;
}
return OPJ_FALSE;
}
/* write super box size */
opj_write_bytes(l_jp2h_data, l_jp2h_size, 4);
/* write super box data on stream */
if (opj_stream_write_data(stream, l_jp2h_data, 8, p_manager) != 8) {
opj_event_msg(p_manager, EVT_ERROR,
"Stream error while writing JP2 Header box\n");
l_result = OPJ_FALSE;
}
if (l_result) {
l_current_writer = l_writers;
for (i = 0; i < l_nb_pass; ++i) {
if (opj_stream_write_data(stream, l_current_writer->m_data,
l_current_writer->m_size, p_manager) != l_current_writer->m_size) {
opj_event_msg(p_manager, EVT_ERROR,
"Stream error while writing JP2 Header box\n");
l_result = OPJ_FALSE;
break;
}
++l_current_writer;
}
}
l_current_writer = l_writers;
/* cleanup */
for (i = 0; i < l_nb_pass; ++i) {
if (l_current_writer->m_data != 00) {
opj_free(l_current_writer->m_data);
}
++l_current_writer;
}
return l_result;
}
static OPJ_BOOL opj_jp2_write_ftyp(opj_jp2_t *jp2,
opj_stream_private_t *cio,
opj_event_mgr_t * p_manager)
{
OPJ_UINT32 i;
OPJ_UINT32 l_ftyp_size;
OPJ_BYTE * l_ftyp_data, * l_current_data_ptr;
OPJ_BOOL l_result;
/* preconditions */
assert(cio != 00);
assert(jp2 != 00);
assert(p_manager != 00);
l_ftyp_size = 16 + 4 * jp2->numcl;
l_ftyp_data = (OPJ_BYTE *) opj_calloc(1, l_ftyp_size);
if (l_ftyp_data == 00) {
opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to handle ftyp data\n");
return OPJ_FALSE;
}
l_current_data_ptr = l_ftyp_data;
opj_write_bytes(l_current_data_ptr, l_ftyp_size, 4); /* box size */
l_current_data_ptr += 4;
opj_write_bytes(l_current_data_ptr, JP2_FTYP, 4); /* FTYP */
l_current_data_ptr += 4;
opj_write_bytes(l_current_data_ptr, jp2->brand, 4); /* BR */
l_current_data_ptr += 4;
opj_write_bytes(l_current_data_ptr, jp2->minversion, 4); /* MinV */
l_current_data_ptr += 4;
for (i = 0; i < jp2->numcl; i++) {
opj_write_bytes(l_current_data_ptr, jp2->cl[i], 4); /* CL */
}
l_result = (opj_stream_write_data(cio, l_ftyp_data, l_ftyp_size,
p_manager) == l_ftyp_size);
if (! l_result) {
opj_event_msg(p_manager, EVT_ERROR,
"Error while writing ftyp data to stream\n");
}
opj_free(l_ftyp_data);
return l_result;
}
static OPJ_BOOL opj_jp2_write_jp2c(opj_jp2_t *jp2,
opj_stream_private_t *cio,
opj_event_mgr_t * p_manager)
{
OPJ_OFF_T j2k_codestream_exit;
OPJ_BYTE l_data_header [8];
/* preconditions */
assert(jp2 != 00);
assert(cio != 00);
assert(p_manager != 00);
assert(opj_stream_has_seek(cio));
j2k_codestream_exit = opj_stream_tell(cio);
opj_write_bytes(l_data_header,
(OPJ_UINT32)(j2k_codestream_exit - jp2->j2k_codestream_offset),
4); /* size of codestream */
opj_write_bytes(l_data_header + 4, JP2_JP2C,
4); /* JP2C */
if (! opj_stream_seek(cio, jp2->j2k_codestream_offset, p_manager)) {
opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n");
return OPJ_FALSE;
}
if (opj_stream_write_data(cio, l_data_header, 8, p_manager) != 8) {
opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n");
return OPJ_FALSE;
}
if (! opj_stream_seek(cio, j2k_codestream_exit, p_manager)) {
opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n");
return OPJ_FALSE;
}
return OPJ_TRUE;
}
static OPJ_BOOL opj_jp2_write_jp(opj_jp2_t *jp2,
opj_stream_private_t *cio,
opj_event_mgr_t * p_manager)
{
/* 12 bytes will be read */
OPJ_BYTE l_signature_data [12];
/* preconditions */
assert(cio != 00);
assert(jp2 != 00);
assert(p_manager != 00);
OPJ_UNUSED(jp2);
/* write box length */
opj_write_bytes(l_signature_data, 12, 4);
/* writes box type */
opj_write_bytes(l_signature_data + 4, JP2_JP, 4);
/* writes magic number*/
opj_write_bytes(l_signature_data + 8, 0x0d0a870a, 4);
if (opj_stream_write_data(cio, l_signature_data, 12, p_manager) != 12) {
return OPJ_FALSE;
}
return OPJ_TRUE;
}
/* ----------------------------------------------------------------------- */
/* JP2 decoder interface */
/* ----------------------------------------------------------------------- */
void opj_jp2_setup_decoder(opj_jp2_t *jp2, opj_dparameters_t *parameters)
{
/* setup the J2K codec */
opj_j2k_setup_decoder(jp2->j2k, parameters);
/* further JP2 initializations go here */
jp2->color.jp2_has_colr = 0;
jp2->comps = NULL;
jp2->ignore_pclr_cmap_cdef = parameters->flags &
OPJ_DPARAMETERS_IGNORE_PCLR_CMAP_CDEF_FLAG;
}
OPJ_BOOL opj_jp2_set_threads(opj_jp2_t *jp2, OPJ_UINT32 num_threads)
{
return opj_j2k_set_threads(jp2->j2k, num_threads);
}
/* ----------------------------------------------------------------------- */
/* JP2 encoder interface */
/* ----------------------------------------------------------------------- */
OPJ_BOOL opj_jp2_setup_encoder(opj_jp2_t *jp2,
opj_cparameters_t *parameters,
opj_image_t *image,
opj_event_mgr_t * p_manager)
{
OPJ_UINT32 i;
OPJ_UINT32 depth_0;
OPJ_UINT32 sign;
OPJ_UINT32 alpha_count;
OPJ_UINT32 color_channels = 0U;
OPJ_UINT32 alpha_channel = 0U;
if (!jp2 || !parameters || !image) {
return OPJ_FALSE;
}
/* setup the J2K codec */
/* ------------------- */
/* Check if number of components respects standard */
if (image->numcomps < 1 || image->numcomps > 16384) {
opj_event_msg(p_manager, EVT_ERROR,
"Invalid number of components specified while setting up JP2 encoder\n");
return OPJ_FALSE;
}
if (opj_j2k_setup_encoder(jp2->j2k, parameters, image,
p_manager) == OPJ_FALSE) {
return OPJ_FALSE;
}
/* setup the JP2 codec */
/* ------------------- */
/* Profile box */
jp2->brand = JP2_JP2; /* BR */
jp2->minversion = 0; /* MinV */
jp2->numcl = 1;
jp2->cl = (OPJ_UINT32*) opj_malloc(jp2->numcl * sizeof(OPJ_UINT32));
if (!jp2->cl) {
opj_event_msg(p_manager, EVT_ERROR,
"Not enough memory when setup the JP2 encoder\n");
return OPJ_FALSE;
}
jp2->cl[0] = JP2_JP2; /* CL0 : JP2 */
/* Image Header box */
jp2->numcomps = image->numcomps; /* NC */
jp2->comps = (opj_jp2_comps_t*) opj_malloc(jp2->numcomps * sizeof(
opj_jp2_comps_t));
if (!jp2->comps) {
opj_event_msg(p_manager, EVT_ERROR,
"Not enough memory when setup the JP2 encoder\n");
/* Memory of jp2->cl will be freed by opj_jp2_destroy */
return OPJ_FALSE;
}
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++) {
OPJ_UINT32 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->icc_profile_len) {
jp2->meth = 2;
jp2->enumcs = 0;
} else {
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 */
}
}
/* Channel Definition box */
/* FIXME not provided by parameters */
/* We try to do what we can... */
alpha_count = 0U;
for (i = 0; i < image->numcomps; i++) {
if (image->comps[i].alpha != 0) {
alpha_count++;
alpha_channel = i;
}
}
if (alpha_count == 1U) { /* no way to deal with more than 1 alpha channel */
switch (jp2->enumcs) {
case 16:
case 18:
color_channels = 3;
break;
case 17:
color_channels = 1;
break;
default:
alpha_count = 0U;
break;
}
if (alpha_count == 0U) {
opj_event_msg(p_manager, EVT_WARNING,
"Alpha channel specified but unknown enumcs. No cdef box will be created.\n");
} else if (image->numcomps < (color_channels + 1)) {
opj_event_msg(p_manager, EVT_WARNING,
"Alpha channel specified but not enough image components for an automatic cdef box creation.\n");
alpha_count = 0U;
} else if ((OPJ_UINT32)alpha_channel < color_channels) {
opj_event_msg(p_manager, EVT_WARNING,
"Alpha channel position conflicts with color channel. No cdef box will be created.\n");
alpha_count = 0U;
}
} else if (alpha_count > 1) {
opj_event_msg(p_manager, EVT_WARNING,
"Multiple alpha channels specified. No cdef box will be created.\n");
}
if (alpha_count == 1U) { /* if here, we know what we can do */
jp2->color.jp2_cdef = (opj_jp2_cdef_t*)opj_malloc(sizeof(opj_jp2_cdef_t));
if (!jp2->color.jp2_cdef) {
opj_event_msg(p_manager, EVT_ERROR,
"Not enough memory to setup the JP2 encoder\n");
return OPJ_FALSE;
}
/* no memset needed, all values will be overwritten except if jp2->color.jp2_cdef->info allocation fails, */
/* in which case jp2->color.jp2_cdef->info will be NULL => valid for destruction */
jp2->color.jp2_cdef->info = (opj_jp2_cdef_info_t*) opj_malloc(
image->numcomps * sizeof(opj_jp2_cdef_info_t));
if (!jp2->color.jp2_cdef->info) {
/* memory will be freed by opj_jp2_destroy */
opj_event_msg(p_manager, EVT_ERROR,
"Not enough memory to setup the JP2 encoder\n");
return OPJ_FALSE;
}
jp2->color.jp2_cdef->n = (OPJ_UINT16)
image->numcomps; /* cast is valid : image->numcomps [1,16384] */
for (i = 0U; i < color_channels; i++) {
jp2->color.jp2_cdef->info[i].cn = (OPJ_UINT16)
i; /* cast is valid : image->numcomps [1,16384] */
jp2->color.jp2_cdef->info[i].typ = 0U;
jp2->color.jp2_cdef->info[i].asoc = (OPJ_UINT16)(i +
1U); /* No overflow + cast is valid : image->numcomps [1,16384] */
}
for (; i < image->numcomps; i++) {
if (image->comps[i].alpha != 0) { /* we'll be here exactly once */
jp2->color.jp2_cdef->info[i].cn = (OPJ_UINT16)
i; /* cast is valid : image->numcomps [1,16384] */
jp2->color.jp2_cdef->info[i].typ = 1U; /* Opacity channel */
jp2->color.jp2_cdef->info[i].asoc =
0U; /* Apply alpha channel to the whole image */
} else {
/* Unknown channel */
jp2->color.jp2_cdef->info[i].cn = (OPJ_UINT16)
i; /* cast is valid : image->numcomps [1,16384] */
jp2->color.jp2_cdef->info[i].typ = 65535U;
jp2->color.jp2_cdef->info[i].asoc = 65535U;
}
}
}
jp2->precedence = 0; /* PRECEDENCE */
jp2->approx = 0; /* APPROX */
jp2->jpip_on = parameters->jpip_on;
return OPJ_TRUE;
}
OPJ_BOOL opj_jp2_encode(opj_jp2_t *jp2,
opj_stream_private_t *stream,
opj_event_mgr_t * p_manager)
{
return opj_j2k_encode(jp2->j2k, stream, p_manager);
}
OPJ_BOOL opj_jp2_end_decompress(opj_jp2_t *jp2,
opj_stream_private_t *cio,
opj_event_mgr_t * p_manager
)
{
/* preconditions */
assert(jp2 != 00);
assert(cio != 00);
assert(p_manager != 00);
/* customization of the end encoding */
if (! opj_jp2_setup_end_header_reading(jp2, p_manager)) {
return OPJ_FALSE;
}
/* write header */
if (! opj_jp2_exec(jp2, jp2->m_procedure_list, cio, p_manager)) {
return OPJ_FALSE;
}
return opj_j2k_end_decompress(jp2->j2k, cio, p_manager);
}
OPJ_BOOL opj_jp2_end_compress(opj_jp2_t *jp2,
opj_stream_private_t *cio,
opj_event_mgr_t * p_manager
)
{
/* preconditions */
assert(jp2 != 00);
assert(cio != 00);
assert(p_manager != 00);
/* customization of the end encoding */
if (! opj_jp2_setup_end_header_writing(jp2, p_manager)) {
return OPJ_FALSE;
}
if (! opj_j2k_end_compress(jp2->j2k, cio, p_manager)) {
return OPJ_FALSE;
}
/* write header */
return opj_jp2_exec(jp2, jp2->m_procedure_list, cio, p_manager);
}
static OPJ_BOOL opj_jp2_setup_end_header_writing(opj_jp2_t *jp2,
opj_event_mgr_t * p_manager)
{
/* preconditions */
assert(jp2 != 00);
assert(p_manager != 00);
#ifdef USE_JPIP
if (jp2->jpip_on) {
if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
(opj_procedure)opj_jpip_write_iptr, p_manager)) {
return OPJ_FALSE;
}
}
#endif
if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
(opj_procedure)opj_jp2_write_jp2c, p_manager)) {
return OPJ_FALSE;
}
/* DEVELOPER CORNER, add your custom procedures */
#ifdef USE_JPIP
if (jp2->jpip_on) {
if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
(opj_procedure)opj_jpip_write_cidx, p_manager)) {
return OPJ_FALSE;
}
if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
(opj_procedure)opj_jpip_write_fidx, p_manager)) {
return OPJ_FALSE;
}
}
#endif
return OPJ_TRUE;
}
static OPJ_BOOL opj_jp2_setup_end_header_reading(opj_jp2_t *jp2,
opj_event_mgr_t * p_manager)
{
/* preconditions */
assert(jp2 != 00);
assert(p_manager != 00);
if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
(opj_procedure)opj_jp2_read_header_procedure, p_manager)) {
return OPJ_FALSE;
}
/* DEVELOPER CORNER, add your custom procedures */
return OPJ_TRUE;
}
static OPJ_BOOL opj_jp2_default_validation(opj_jp2_t * jp2,
opj_stream_private_t *cio,
opj_event_mgr_t * p_manager
)
{
OPJ_BOOL l_is_valid = OPJ_TRUE;
OPJ_UINT32 i;
/* preconditions */
assert(jp2 != 00);
assert(cio != 00);
assert(p_manager != 00);
OPJ_UNUSED(p_manager);
/* JPEG2000 codec validation */
/* STATE checking */
/* make sure the state is at 0 */
l_is_valid &= (jp2->jp2_state == JP2_STATE_NONE);
/* make sure not reading a jp2h ???? WEIRD */
l_is_valid &= (jp2->jp2_img_state == JP2_IMG_STATE_NONE);
/* POINTER validation */
/* make sure a j2k codec is present */
l_is_valid &= (jp2->j2k != 00);
/* make sure a procedure list is present */
l_is_valid &= (jp2->m_procedure_list != 00);
/* make sure a validation list is present */
l_is_valid &= (jp2->m_validation_list != 00);
/* PARAMETER VALIDATION */
/* number of components */
l_is_valid &= (jp2->numcl > 0);
/* width */
l_is_valid &= (jp2->h > 0);
/* height */
l_is_valid &= (jp2->w > 0);
/* precision */
for (i = 0; i < jp2->numcomps; ++i) {
l_is_valid &= ((jp2->comps[i].bpcc & 0x7FU) <
38U); /* 0 is valid, ignore sign for check */
}
/* METH */
l_is_valid &= ((jp2->meth > 0) && (jp2->meth < 3));
/* stream validation */
/* back and forth is needed */
l_is_valid &= opj_stream_has_seek(cio);
return l_is_valid;
}
static OPJ_BOOL opj_jp2_read_header_procedure(opj_jp2_t *jp2,
opj_stream_private_t *stream,
opj_event_mgr_t * p_manager
)
{
opj_jp2_box_t box;
OPJ_UINT32 l_nb_bytes_read;
const opj_jp2_header_handler_t * l_current_handler;
const opj_jp2_header_handler_t * l_current_handler_misplaced;
OPJ_UINT32 l_last_data_size = OPJ_BOX_SIZE;
OPJ_UINT32 l_current_data_size;
OPJ_BYTE * l_current_data = 00;
/* preconditions */
assert(stream != 00);
assert(jp2 != 00);
assert(p_manager != 00);
l_current_data = (OPJ_BYTE*)opj_calloc(1, l_last_data_size);
if (l_current_data == 00) {
opj_event_msg(p_manager, EVT_ERROR,
"Not enough memory to handle jpeg2000 file header\n");
return OPJ_FALSE;
}
while (opj_jp2_read_boxhdr(&box, &l_nb_bytes_read, stream, p_manager)) {
/* is it the codestream box ? */
if (box.type == JP2_JP2C) {
if (jp2->jp2_state & JP2_STATE_HEADER) {
jp2->jp2_state |= JP2_STATE_CODESTREAM;
opj_free(l_current_data);
return OPJ_TRUE;
} else {
opj_event_msg(p_manager, EVT_ERROR, "bad placed jpeg codestream\n");
opj_free(l_current_data);
return OPJ_FALSE;
}
} else if (box.length == 0) {
opj_event_msg(p_manager, EVT_ERROR, "Cannot handle box of undefined sizes\n");
opj_free(l_current_data);
return OPJ_FALSE;
}
/* testcase 1851.pdf.SIGSEGV.ce9.948 */
else if (box.length < l_nb_bytes_read) {
opj_event_msg(p_manager, EVT_ERROR, "invalid box size %d (%x)\n", box.length,
box.type);
opj_free(l_current_data);
return OPJ_FALSE;
}
l_current_handler = opj_jp2_find_handler(box.type);
l_current_handler_misplaced = opj_jp2_img_find_handler(box.type);
l_current_data_size = box.length - l_nb_bytes_read;
if ((l_current_handler != 00) || (l_current_handler_misplaced != 00)) {
if (l_current_handler == 00) {
opj_event_msg(p_manager, EVT_WARNING,
"Found a misplaced '%c%c%c%c' box outside jp2h box\n",
(OPJ_BYTE)(box.type >> 24), (OPJ_BYTE)(box.type >> 16),
(OPJ_BYTE)(box.type >> 8), (OPJ_BYTE)(box.type >> 0));
if (jp2->jp2_state & JP2_STATE_HEADER) {
/* read anyway, we already have jp2h */
l_current_handler = l_current_handler_misplaced;
} else {
opj_event_msg(p_manager, EVT_WARNING,
"JPEG2000 Header box not read yet, '%c%c%c%c' box will be ignored\n",
(OPJ_BYTE)(box.type >> 24), (OPJ_BYTE)(box.type >> 16),
(OPJ_BYTE)(box.type >> 8), (OPJ_BYTE)(box.type >> 0));
jp2->jp2_state |= JP2_STATE_UNKNOWN;
if (opj_stream_skip(stream, l_current_data_size,
p_manager) != l_current_data_size) {
opj_event_msg(p_manager, EVT_ERROR,
"Problem with skipping JPEG2000 box, stream error\n");
opj_free(l_current_data);
return OPJ_FALSE;
}
continue;
}
}
if ((OPJ_OFF_T)l_current_data_size > opj_stream_get_number_byte_left(stream)) {
/* do not even try to malloc if we can't read */
opj_event_msg(p_manager, EVT_ERROR,
"Invalid box size %d for box '%c%c%c%c'. Need %d bytes, %d bytes remaining \n",
box.length, (OPJ_BYTE)(box.type >> 24), (OPJ_BYTE)(box.type >> 16),
(OPJ_BYTE)(box.type >> 8), (OPJ_BYTE)(box.type >> 0), l_current_data_size,
(OPJ_UINT32)opj_stream_get_number_byte_left(stream));
opj_free(l_current_data);
return OPJ_FALSE;
}
if (l_current_data_size > l_last_data_size) {
OPJ_BYTE* new_current_data = (OPJ_BYTE*)opj_realloc(l_current_data,
l_current_data_size);
if (!new_current_data) {
opj_free(l_current_data);
opj_event_msg(p_manager, EVT_ERROR,
"Not enough memory to handle jpeg2000 box\n");
return OPJ_FALSE;
}
l_current_data = new_current_data;
l_last_data_size = l_current_data_size;
}
l_nb_bytes_read = (OPJ_UINT32)opj_stream_read_data(stream, l_current_data,
l_current_data_size, p_manager);
if (l_nb_bytes_read != l_current_data_size) {
opj_event_msg(p_manager, EVT_ERROR,
"Problem with reading JPEG2000 box, stream error\n");
opj_free(l_current_data);
return OPJ_FALSE;
}
if (! l_current_handler->handler(jp2, l_current_data, l_current_data_size,
p_manager)) {
opj_free(l_current_data);
return OPJ_FALSE;
}
} else {
if (!(jp2->jp2_state & JP2_STATE_SIGNATURE)) {
opj_event_msg(p_manager, EVT_ERROR,
"Malformed JP2 file format: first box must be JPEG 2000 signature box\n");
opj_free(l_current_data);
return OPJ_FALSE;
}
if (!(jp2->jp2_state & JP2_STATE_FILE_TYPE)) {
opj_event_msg(p_manager, EVT_ERROR,
"Malformed JP2 file format: second box must be file type box\n");
opj_free(l_current_data);
return OPJ_FALSE;
}
jp2->jp2_state |= JP2_STATE_UNKNOWN;
if (opj_stream_skip(stream, l_current_data_size,
p_manager) != l_current_data_size) {
if (jp2->jp2_state & JP2_STATE_CODESTREAM) {
/* If we already read the codestream, do not error out */
/* Needed for data/input/nonregression/issue254.jp2 */
opj_event_msg(p_manager, EVT_WARNING,
"Problem with skipping JPEG2000 box, stream error\n");
opj_free(l_current_data);
return OPJ_TRUE;
} else {
opj_event_msg(p_manager, EVT_ERROR,
"Problem with skipping JPEG2000 box, stream error\n");
opj_free(l_current_data);
return OPJ_FALSE;
}
}
}
}
opj_free(l_current_data);
return OPJ_TRUE;
}
/**
* Executes the given procedures on the given codec.
*
* @param p_procedure_list the list of procedures to execute
* @param jp2 the jpeg2000 file codec to execute the procedures on.
* @param stream the stream to execute the procedures on.
* @param p_manager the user manager.
*
* @return true if all the procedures were successfully executed.
*/
static OPJ_BOOL opj_jp2_exec(opj_jp2_t * jp2,
opj_procedure_list_t * p_procedure_list,
opj_stream_private_t *stream,
opj_event_mgr_t * p_manager
)
{
OPJ_BOOL(** l_procedure)(opj_jp2_t * jp2, opj_stream_private_t *,
opj_event_mgr_t *) = 00;
OPJ_BOOL l_result = OPJ_TRUE;
OPJ_UINT32 l_nb_proc, i;
/* preconditions */
assert(p_procedure_list != 00);
assert(jp2 != 00);
assert(stream != 00);
assert(p_manager != 00);
l_nb_proc = opj_procedure_list_get_nb_procedures(p_procedure_list);
l_procedure = (OPJ_BOOL(**)(opj_jp2_t * jp2, opj_stream_private_t *,
opj_event_mgr_t *)) opj_procedure_list_get_first_procedure(p_procedure_list);
for (i = 0; i < l_nb_proc; ++i) {
l_result = l_result && (*l_procedure)(jp2, stream, p_manager);
++l_procedure;
}
/* and clear the procedure list at the end. */
opj_procedure_list_clear(p_procedure_list);
return l_result;
}
OPJ_BOOL opj_jp2_start_compress(opj_jp2_t *jp2,
opj_stream_private_t *stream,
opj_image_t * p_image,
opj_event_mgr_t * p_manager
)
{
/* preconditions */
assert(jp2 != 00);
assert(stream != 00);
assert(p_manager != 00);
/* customization of the validation */
if (! opj_jp2_setup_encoding_validation(jp2, p_manager)) {
return OPJ_FALSE;
}
/* validation of the parameters codec */
if (! opj_jp2_exec(jp2, jp2->m_validation_list, stream, p_manager)) {
return OPJ_FALSE;
}
/* customization of the encoding */
if (! opj_jp2_setup_header_writing(jp2, p_manager)) {
return OPJ_FALSE;
}
/* write header */
if (! opj_jp2_exec(jp2, jp2->m_procedure_list, stream, p_manager)) {
return OPJ_FALSE;
}
return opj_j2k_start_compress(jp2->j2k, stream, p_image, p_manager);
}
static const opj_jp2_header_handler_t * opj_jp2_find_handler(OPJ_UINT32 p_id)
{
OPJ_UINT32 i, l_handler_size = sizeof(jp2_header) / sizeof(
opj_jp2_header_handler_t);
for (i = 0; i < l_handler_size; ++i) {
if (jp2_header[i].id == p_id) {
return &jp2_header[i];
}
}
return NULL;
}
/**
* Finds the image execution function related to the given box id.
*
* @param p_id the id of the handler to fetch.
*
* @return the given handler or 00 if it could not be found.
*/
static const opj_jp2_header_handler_t * opj_jp2_img_find_handler(
OPJ_UINT32 p_id)
{
OPJ_UINT32 i, l_handler_size = sizeof(jp2_img_header) / sizeof(
opj_jp2_header_handler_t);
for (i = 0; i < l_handler_size; ++i) {
if (jp2_img_header[i].id == p_id) {
return &jp2_img_header[i];
}
}
return NULL;
}
/**
* Reads a jpeg2000 file signature box.
*
* @param p_header_data the data contained in the signature box.
* @param jp2 the jpeg2000 file codec.
* @param p_header_size the size of the data contained in the signature box.
* @param p_manager the user event manager.
*
* @return true if the file signature box is valid.
*/
static OPJ_BOOL opj_jp2_read_jp(opj_jp2_t *jp2,
OPJ_BYTE * p_header_data,
OPJ_UINT32 p_header_size,
opj_event_mgr_t * p_manager
)
{
OPJ_UINT32 l_magic_number;
/* preconditions */
assert(p_header_data != 00);
assert(jp2 != 00);
assert(p_manager != 00);
if (jp2->jp2_state != JP2_STATE_NONE) {
opj_event_msg(p_manager, EVT_ERROR,
"The signature box must be the first box in the file.\n");
return OPJ_FALSE;
}
/* assure length of data is correct (4 -> magic number) */
if (p_header_size != 4) {
opj_event_msg(p_manager, EVT_ERROR, "Error with JP signature Box size\n");
return OPJ_FALSE;
}
/* rearrange data */
opj_read_bytes(p_header_data, &l_magic_number, 4);
if (l_magic_number != 0x0d0a870a) {
opj_event_msg(p_manager, EVT_ERROR,
"Error with JP Signature : bad magic number\n");
return OPJ_FALSE;
}
jp2->jp2_state |= JP2_STATE_SIGNATURE;
return OPJ_TRUE;
}
/**
* Reads a a FTYP box - File type box
*
* @param p_header_data the data contained in the FTYP box.
* @param jp2 the jpeg2000 file codec.
* @param p_header_size the size of the data contained in the FTYP box.
* @param p_manager the user event manager.
*
* @return true if the FTYP box is valid.
*/
static OPJ_BOOL opj_jp2_read_ftyp(opj_jp2_t *jp2,
OPJ_BYTE * p_header_data,
OPJ_UINT32 p_header_size,
opj_event_mgr_t * p_manager
)
{
OPJ_UINT32 i, l_remaining_bytes;
/* preconditions */
assert(p_header_data != 00);
assert(jp2 != 00);
assert(p_manager != 00);
if (jp2->jp2_state != JP2_STATE_SIGNATURE) {
opj_event_msg(p_manager, EVT_ERROR,
"The ftyp box must be the second box in the file.\n");
return OPJ_FALSE;
}
/* assure length of data is correct */
if (p_header_size < 8) {
opj_event_msg(p_manager, EVT_ERROR, "Error with FTYP signature Box size\n");
return OPJ_FALSE;
}
opj_read_bytes(p_header_data, &jp2->brand, 4); /* BR */
p_header_data += 4;
opj_read_bytes(p_header_data, &jp2->minversion, 4); /* MinV */
p_header_data += 4;
l_remaining_bytes = p_header_size - 8;
/* the number of remaining bytes should be a multiple of 4 */
if ((l_remaining_bytes & 0x3) != 0) {
opj_event_msg(p_manager, EVT_ERROR, "Error with FTYP signature Box size\n");
return OPJ_FALSE;
}
/* div by 4 */
jp2->numcl = l_remaining_bytes >> 2;
if (jp2->numcl) {
jp2->cl = (OPJ_UINT32 *) opj_calloc(jp2->numcl, sizeof(OPJ_UINT32));
if (jp2->cl == 00) {
opj_event_msg(p_manager, EVT_ERROR, "Not enough memory with FTYP Box\n");
return OPJ_FALSE;
}
}
for (i = 0; i < jp2->numcl; ++i) {
opj_read_bytes(p_header_data, &jp2->cl[i], 4); /* CLi */
p_header_data += 4;
}
jp2->jp2_state |= JP2_STATE_FILE_TYPE;
return OPJ_TRUE;
}
static OPJ_BOOL opj_jp2_skip_jp2c(opj_jp2_t *jp2,
opj_stream_private_t *stream,
opj_event_mgr_t * p_manager)
{
/* preconditions */
assert(jp2 != 00);
assert(stream != 00);
assert(p_manager != 00);
jp2->j2k_codestream_offset = opj_stream_tell(stream);
if (opj_stream_skip(stream, 8, p_manager) != 8) {
return OPJ_FALSE;
}
return OPJ_TRUE;
}
static OPJ_BOOL opj_jpip_skip_iptr(opj_jp2_t *jp2,
opj_stream_private_t *stream,
opj_event_mgr_t * p_manager)
{
/* preconditions */
assert(jp2 != 00);
assert(stream != 00);
assert(p_manager != 00);
jp2->jpip_iptr_offset = opj_stream_tell(stream);
if (opj_stream_skip(stream, 24, p_manager) != 24) {
return OPJ_FALSE;
}
return OPJ_TRUE;
}
/**
* Reads the Jpeg2000 file Header box - JP2 Header box (warning, this is a super box).
*
* @param p_header_data the data contained in the file header box.
* @param jp2 the jpeg2000 file codec.
* @param p_header_size the size of the data contained in the file header box.
* @param p_manager the user event manager.
*
* @return true if the JP2 Header box was successfully recognized.
*/
static OPJ_BOOL opj_jp2_read_jp2h(opj_jp2_t *jp2,
OPJ_BYTE *p_header_data,
OPJ_UINT32 p_header_size,
opj_event_mgr_t * p_manager
)
{
OPJ_UINT32 l_box_size = 0, l_current_data_size = 0;
opj_jp2_box_t box;
const opj_jp2_header_handler_t * l_current_handler;
OPJ_BOOL l_has_ihdr = 0;
/* preconditions */
assert(p_header_data != 00);
assert(jp2 != 00);
assert(p_manager != 00);
/* make sure the box is well placed */
if ((jp2->jp2_state & JP2_STATE_FILE_TYPE) != JP2_STATE_FILE_TYPE) {
opj_event_msg(p_manager, EVT_ERROR,
"The box must be the first box in the file.\n");
return OPJ_FALSE;
}
jp2->jp2_img_state = JP2_IMG_STATE_NONE;
/* iterate while remaining data */
while (p_header_size > 0) {
if (! opj_jp2_read_boxhdr_char(&box, p_header_data, &l_box_size, p_header_size,
p_manager)) {
opj_event_msg(p_manager, EVT_ERROR,
"Stream error while reading JP2 Header box\n");
return OPJ_FALSE;
}
if (box.length > p_header_size) {
opj_event_msg(p_manager, EVT_ERROR,
"Stream error while reading JP2 Header box: box length is inconsistent.\n");
return OPJ_FALSE;
}
l_current_handler = opj_jp2_img_find_handler(box.type);
l_current_data_size = box.length - l_box_size;
p_header_data += l_box_size;
if (l_current_handler != 00) {
if (! l_current_handler->handler(jp2, p_header_data, l_current_data_size,
p_manager)) {
return OPJ_FALSE;
}
} else {
jp2->jp2_img_state |= JP2_IMG_STATE_UNKNOWN;
}
if (box.type == JP2_IHDR) {
l_has_ihdr = 1;
}
p_header_data += l_current_data_size;
p_header_size -= box.length;
}
if (l_has_ihdr == 0) {
opj_event_msg(p_manager, EVT_ERROR,
"Stream error while reading JP2 Header box: no 'ihdr' box.\n");
return OPJ_FALSE;
}
jp2->jp2_state |= JP2_STATE_HEADER;
jp2->has_jp2h = 1;
return OPJ_TRUE;
}
static OPJ_BOOL opj_jp2_read_boxhdr_char(opj_jp2_box_t *box,
OPJ_BYTE * p_data,
OPJ_UINT32 * p_number_bytes_read,
OPJ_UINT32 p_box_max_size,
opj_event_mgr_t * p_manager
)
{
OPJ_UINT32 l_value;
/* preconditions */
assert(p_data != 00);
assert(box != 00);
assert(p_number_bytes_read != 00);
assert(p_manager != 00);
if (p_box_max_size < 8) {
opj_event_msg(p_manager, EVT_ERROR, "Cannot handle box of less than 8 bytes\n");
return OPJ_FALSE;
}
/* process read data */
opj_read_bytes(p_data, &l_value, 4);
p_data += 4;
box->length = (OPJ_UINT32)(l_value);
opj_read_bytes(p_data, &l_value, 4);
p_data += 4;
box->type = (OPJ_UINT32)(l_value);
*p_number_bytes_read = 8;
/* do we have a "special very large box ?" */
/* read then the XLBox */
if (box->length == 1) {
OPJ_UINT32 l_xl_part_size;
if (p_box_max_size < 16) {
opj_event_msg(p_manager, EVT_ERROR,
"Cannot handle XL box of less than 16 bytes\n");
return OPJ_FALSE;
}
opj_read_bytes(p_data, &l_xl_part_size, 4);
p_data += 4;
*p_number_bytes_read += 4;
if (l_xl_part_size != 0) {
opj_event_msg(p_manager, EVT_ERROR,
"Cannot handle box sizes higher than 2^32\n");
return OPJ_FALSE;
}
opj_read_bytes(p_data, &l_value, 4);
*p_number_bytes_read += 4;
box->length = (OPJ_UINT32)(l_value);
if (box->length == 0) {
opj_event_msg(p_manager, EVT_ERROR, "Cannot handle box of undefined sizes\n");
return OPJ_FALSE;
}
} else if (box->length == 0) {
opj_event_msg(p_manager, EVT_ERROR, "Cannot handle box of undefined sizes\n");
return OPJ_FALSE;
}
if (box->length < *p_number_bytes_read) {
opj_event_msg(p_manager, EVT_ERROR, "Box length is inconsistent.\n");
return OPJ_FALSE;
}
return OPJ_TRUE;
}
OPJ_BOOL opj_jp2_read_header(opj_stream_private_t *p_stream,
opj_jp2_t *jp2,
opj_image_t ** p_image,
opj_event_mgr_t * p_manager
)
{
/* preconditions */
assert(jp2 != 00);
assert(p_stream != 00);
assert(p_manager != 00);
/* customization of the validation */
if (! opj_jp2_setup_decoding_validation(jp2, p_manager)) {
return OPJ_FALSE;
}
/* customization of the encoding */
if (! opj_jp2_setup_header_reading(jp2, p_manager)) {
return OPJ_FALSE;
}
/* validation of the parameters codec */
if (! opj_jp2_exec(jp2, jp2->m_validation_list, p_stream, p_manager)) {
return OPJ_FALSE;
}
/* read header */
if (! opj_jp2_exec(jp2, jp2->m_procedure_list, p_stream, p_manager)) {
return OPJ_FALSE;
}
if (jp2->has_jp2h == 0) {
opj_event_msg(p_manager, EVT_ERROR, "JP2H box missing. Required.\n");
return OPJ_FALSE;
}
if (jp2->has_ihdr == 0) {
opj_event_msg(p_manager, EVT_ERROR, "IHDR box_missing. Required.\n");
return OPJ_FALSE;
}
return opj_j2k_read_header(p_stream,
jp2->j2k,
p_image,
p_manager);
}
static OPJ_BOOL opj_jp2_setup_encoding_validation(opj_jp2_t *jp2,
opj_event_mgr_t * p_manager)
{
/* preconditions */
assert(jp2 != 00);
assert(p_manager != 00);
if (! opj_procedure_list_add_procedure(jp2->m_validation_list,
(opj_procedure)opj_jp2_default_validation, p_manager)) {
return OPJ_FALSE;
}
/* DEVELOPER CORNER, add your custom validation procedure */
return OPJ_TRUE;
}
static OPJ_BOOL opj_jp2_setup_decoding_validation(opj_jp2_t *jp2,
opj_event_mgr_t * p_manager)
{
/* preconditions */
assert(jp2 != 00);
assert(p_manager != 00);
OPJ_UNUSED(jp2);
OPJ_UNUSED(p_manager);
/* DEVELOPER CORNER, add your custom validation procedure */
return OPJ_TRUE;
}
static OPJ_BOOL opj_jp2_setup_header_writing(opj_jp2_t *jp2,
opj_event_mgr_t * p_manager)
{
/* preconditions */
assert(jp2 != 00);
assert(p_manager != 00);
if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
(opj_procedure)opj_jp2_write_jp, p_manager)) {
return OPJ_FALSE;
}
if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
(opj_procedure)opj_jp2_write_ftyp, p_manager)) {
return OPJ_FALSE;
}
if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
(opj_procedure)opj_jp2_write_jp2h, p_manager)) {
return OPJ_FALSE;
}
if (jp2->jpip_on) {
if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
(opj_procedure)opj_jpip_skip_iptr, p_manager)) {
return OPJ_FALSE;
}
}
if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
(opj_procedure)opj_jp2_skip_jp2c, p_manager)) {
return OPJ_FALSE;
}
/* DEVELOPER CORNER, insert your custom procedures */
return OPJ_TRUE;
}
static OPJ_BOOL opj_jp2_setup_header_reading(opj_jp2_t *jp2,
opj_event_mgr_t * p_manager)
{
/* preconditions */
assert(jp2 != 00);
assert(p_manager != 00);
if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
(opj_procedure)opj_jp2_read_header_procedure, p_manager)) {
return OPJ_FALSE;
}
/* DEVELOPER CORNER, add your custom procedures */
return OPJ_TRUE;
}
OPJ_BOOL opj_jp2_read_tile_header(opj_jp2_t * p_jp2,
OPJ_UINT32 * p_tile_index,
OPJ_UINT32 * p_data_size,
OPJ_INT32 * p_tile_x0,
OPJ_INT32 * p_tile_y0,
OPJ_INT32 * p_tile_x1,
OPJ_INT32 * p_tile_y1,
OPJ_UINT32 * p_nb_comps,
OPJ_BOOL * p_go_on,
opj_stream_private_t *p_stream,
opj_event_mgr_t * p_manager
)
{
return opj_j2k_read_tile_header(p_jp2->j2k,
p_tile_index,
p_data_size,
p_tile_x0, p_tile_y0,
p_tile_x1, p_tile_y1,
p_nb_comps,
p_go_on,
p_stream,
p_manager);
}
OPJ_BOOL opj_jp2_write_tile(opj_jp2_t *p_jp2,
OPJ_UINT32 p_tile_index,
OPJ_BYTE * p_data,
OPJ_UINT32 p_data_size,
opj_stream_private_t *p_stream,
opj_event_mgr_t * p_manager
)
{
return opj_j2k_write_tile(p_jp2->j2k, p_tile_index, p_data, p_data_size,
p_stream, p_manager);
}
OPJ_BOOL opj_jp2_decode_tile(opj_jp2_t * p_jp2,
OPJ_UINT32 p_tile_index,
OPJ_BYTE * p_data,
OPJ_UINT32 p_data_size,
opj_stream_private_t *p_stream,
opj_event_mgr_t * p_manager
)
{
return opj_j2k_decode_tile(p_jp2->j2k, p_tile_index, p_data, p_data_size,
p_stream, p_manager);
}
void opj_jp2_destroy(opj_jp2_t *jp2)
{
if (jp2) {
/* destroy the J2K codec */
opj_j2k_destroy(jp2->j2k);
jp2->j2k = 00;
if (jp2->comps) {
opj_free(jp2->comps);
jp2->comps = 00;
}
if (jp2->cl) {
opj_free(jp2->cl);
jp2->cl = 00;
}
if (jp2->color.icc_profile_buf) {
opj_free(jp2->color.icc_profile_buf);
jp2->color.icc_profile_buf = 00;
}
if (jp2->color.jp2_cdef) {
if (jp2->color.jp2_cdef->info) {
opj_free(jp2->color.jp2_cdef->info);
jp2->color.jp2_cdef->info = NULL;
}
opj_free(jp2->color.jp2_cdef);
jp2->color.jp2_cdef = 00;
}
if (jp2->color.jp2_pclr) {
if (jp2->color.jp2_pclr->cmap) {
opj_free(jp2->color.jp2_pclr->cmap);
jp2->color.jp2_pclr->cmap = NULL;
}
if (jp2->color.jp2_pclr->channel_sign) {
opj_free(jp2->color.jp2_pclr->channel_sign);
jp2->color.jp2_pclr->channel_sign = NULL;
}
if (jp2->color.jp2_pclr->channel_size) {
opj_free(jp2->color.jp2_pclr->channel_size);
jp2->color.jp2_pclr->channel_size = NULL;
}
if (jp2->color.jp2_pclr->entries) {
opj_free(jp2->color.jp2_pclr->entries);
jp2->color.jp2_pclr->entries = NULL;
}
opj_free(jp2->color.jp2_pclr);
jp2->color.jp2_pclr = 00;
}
if (jp2->m_validation_list) {
opj_procedure_list_destroy(jp2->m_validation_list);
jp2->m_validation_list = 00;
}
if (jp2->m_procedure_list) {
opj_procedure_list_destroy(jp2->m_procedure_list);
jp2->m_procedure_list = 00;
}
opj_free(jp2);
}
}
OPJ_BOOL opj_jp2_set_decoded_components(opj_jp2_t *p_jp2,
OPJ_UINT32 numcomps,
const OPJ_UINT32* comps_indices,
opj_event_mgr_t * p_manager)
{
return opj_j2k_set_decoded_components(p_jp2->j2k,
numcomps, comps_indices,
p_manager);
}
OPJ_BOOL opj_jp2_set_decode_area(opj_jp2_t *p_jp2,
opj_image_t* p_image,
OPJ_INT32 p_start_x, OPJ_INT32 p_start_y,
OPJ_INT32 p_end_x, OPJ_INT32 p_end_y,
opj_event_mgr_t * p_manager
)
{
return opj_j2k_set_decode_area(p_jp2->j2k, p_image, p_start_x, p_start_y,
p_end_x, p_end_y, p_manager);
}
OPJ_BOOL opj_jp2_get_tile(opj_jp2_t *p_jp2,
opj_stream_private_t *p_stream,
opj_image_t* p_image,
opj_event_mgr_t * p_manager,
OPJ_UINT32 tile_index
)
{
if (!p_image) {
return OPJ_FALSE;
}
opj_event_msg(p_manager, EVT_WARNING,
"JP2 box which are after the codestream will not be read by this function.\n");
if (! opj_j2k_get_tile(p_jp2->j2k, p_stream, p_image, p_manager, tile_index)) {
opj_event_msg(p_manager, EVT_ERROR,
"Failed to decode the codestream in the JP2 file\n");
return OPJ_FALSE;
}
if (p_jp2->j2k->m_specific_param.m_decoder.m_numcomps_to_decode) {
/* Bypass all JP2 component transforms */
return OPJ_TRUE;
}
if (!opj_jp2_check_color(p_image, &(p_jp2->color), p_manager)) {
return OPJ_FALSE;
}
/* Set Image Color Space */
if (p_jp2->enumcs == 16) {
p_image->color_space = OPJ_CLRSPC_SRGB;
} else if (p_jp2->enumcs == 17) {
p_image->color_space = OPJ_CLRSPC_GRAY;
} else if (p_jp2->enumcs == 18) {
p_image->color_space = OPJ_CLRSPC_SYCC;
} else if (p_jp2->enumcs == 24) {
p_image->color_space = OPJ_CLRSPC_EYCC;
} else if (p_jp2->enumcs == 12) {
p_image->color_space = OPJ_CLRSPC_CMYK;
} else {
p_image->color_space = OPJ_CLRSPC_UNKNOWN;
}
if (p_jp2->color.jp2_pclr) {
/* Part 1, I.5.3.4: Either both or none : */
if (!p_jp2->color.jp2_pclr->cmap) {
opj_jp2_free_pclr(&(p_jp2->color));
} else {
if (!opj_jp2_apply_pclr(p_image, &(p_jp2->color), p_manager)) {
return OPJ_FALSE;
}
}
}
/* Apply the color space if needed */
if (p_jp2->color.jp2_cdef) {
opj_jp2_apply_cdef(p_image, &(p_jp2->color), p_manager);
}
if (p_jp2->color.icc_profile_buf) {
p_image->icc_profile_buf = p_jp2->color.icc_profile_buf;
p_image->icc_profile_len = p_jp2->color.icc_profile_len;
p_jp2->color.icc_profile_buf = NULL;
}
return OPJ_TRUE;
}
/* ----------------------------------------------------------------------- */
/* JP2 encoder interface */
/* ----------------------------------------------------------------------- */
opj_jp2_t* opj_jp2_create(OPJ_BOOL p_is_decoder)
{
opj_jp2_t *jp2 = (opj_jp2_t*)opj_calloc(1, sizeof(opj_jp2_t));
if (jp2) {
/* create the J2K codec */
if (! p_is_decoder) {
jp2->j2k = opj_j2k_create_compress();
} else {
jp2->j2k = opj_j2k_create_decompress();
}
if (jp2->j2k == 00) {
opj_jp2_destroy(jp2);
return 00;
}
/* Color structure */
jp2->color.icc_profile_buf = NULL;
jp2->color.icc_profile_len = 0;
jp2->color.jp2_cdef = NULL;
jp2->color.jp2_pclr = NULL;
jp2->color.jp2_has_colr = 0;
/* validation list creation */
jp2->m_validation_list = opj_procedure_list_create();
if (! jp2->m_validation_list) {
opj_jp2_destroy(jp2);
return 00;
}
/* execution list creation */
jp2->m_procedure_list = opj_procedure_list_create();
if (! jp2->m_procedure_list) {
opj_jp2_destroy(jp2);
return 00;
}
}
return jp2;
}
void jp2_dump(opj_jp2_t* p_jp2, OPJ_INT32 flag, FILE* out_stream)
{
/* preconditions */
assert(p_jp2 != 00);
j2k_dump(p_jp2->j2k,
flag,
out_stream);
}
opj_codestream_index_t* jp2_get_cstr_index(opj_jp2_t* p_jp2)
{
return j2k_get_cstr_index(p_jp2->j2k);
}
opj_codestream_info_v2_t* jp2_get_cstr_info(opj_jp2_t* p_jp2)
{
return j2k_get_cstr_info(p_jp2->j2k);
}
OPJ_BOOL opj_jp2_set_decoded_resolution_factor(opj_jp2_t *p_jp2,
OPJ_UINT32 res_factor,
opj_event_mgr_t * p_manager)
{
return opj_j2k_set_decoded_resolution_factor(p_jp2->j2k, res_factor, p_manager);
}
/* JPIP specific */
#ifdef USE_JPIP
static OPJ_BOOL opj_jpip_write_iptr(opj_jp2_t *jp2,
opj_stream_private_t *cio,
opj_event_mgr_t * p_manager)
{
OPJ_OFF_T j2k_codestream_exit;
OPJ_BYTE l_data_header [24];
/* preconditions */
assert(jp2 != 00);
assert(cio != 00);
assert(p_manager != 00);
assert(opj_stream_has_seek(cio));
j2k_codestream_exit = opj_stream_tell(cio);
opj_write_bytes(l_data_header, 24, 4); /* size of iptr */
opj_write_bytes(l_data_header + 4, JPIP_IPTR,
4); /* IPTR */
#if 0
opj_write_bytes(l_data_header + 4 + 4, 0, 8); /* offset */
opj_write_bytes(l_data_header + 8 + 8, 0, 8); /* length */
#else
opj_write_double(l_data_header + 4 + 4, 0); /* offset */
opj_write_double(l_data_header + 8 + 8, 0); /* length */
#endif
if (! opj_stream_seek(cio, jp2->jpip_iptr_offset, p_manager)) {
opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n");
return OPJ_FALSE;
}
if (opj_stream_write_data(cio, l_data_header, 24, p_manager) != 24) {
opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n");
return OPJ_FALSE;
}
if (! opj_stream_seek(cio, j2k_codestream_exit, p_manager)) {
opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n");
return OPJ_FALSE;
}
return OPJ_TRUE;
}
static OPJ_BOOL opj_jpip_write_fidx(opj_jp2_t *jp2,
opj_stream_private_t *cio,
opj_event_mgr_t * p_manager)
{
OPJ_OFF_T j2k_codestream_exit;
OPJ_BYTE l_data_header [24];
OPJ_UNUSED(jp2);
/* preconditions */
assert(jp2 != 00);
assert(cio != 00);
assert(p_manager != 00);
assert(opj_stream_has_seek(cio));
opj_write_bytes(l_data_header, 24, 4); /* size of iptr */
opj_write_bytes(l_data_header + 4, JPIP_FIDX,
4); /* IPTR */
opj_write_double(l_data_header + 4 + 4, 0); /* offset */
opj_write_double(l_data_header + 8 + 8, 0); /* length */
if (opj_stream_write_data(cio, l_data_header, 24, p_manager) != 24) {
opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n");
return OPJ_FALSE;
}
j2k_codestream_exit = opj_stream_tell(cio);
if (! opj_stream_seek(cio, j2k_codestream_exit, p_manager)) {
opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n");
return OPJ_FALSE;
}
return OPJ_TRUE;
}
static OPJ_BOOL opj_jpip_write_cidx(opj_jp2_t *jp2,
opj_stream_private_t *cio,
opj_event_mgr_t * p_manager)
{
OPJ_OFF_T j2k_codestream_exit;
OPJ_BYTE l_data_header [24];
OPJ_UNUSED(jp2);
/* preconditions */
assert(jp2 != 00);
assert(cio != 00);
assert(p_manager != 00);
assert(opj_stream_has_seek(cio));
j2k_codestream_exit = opj_stream_tell(cio);
opj_write_bytes(l_data_header, 24, 4); /* size of iptr */
opj_write_bytes(l_data_header + 4, JPIP_CIDX,
4); /* IPTR */
#if 0
opj_write_bytes(l_data_header + 4 + 4, 0, 8); /* offset */
opj_write_bytes(l_data_header + 8 + 8, 0, 8); /* length */
#else
opj_write_double(l_data_header + 4 + 4, 0); /* offset */
opj_write_double(l_data_header + 8 + 8, 0); /* length */
#endif
if (! opj_stream_seek(cio, j2k_codestream_exit, p_manager)) {
opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n");
return OPJ_FALSE;
}
if (opj_stream_write_data(cio, l_data_header, 24, p_manager) != 24) {
opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n");
return OPJ_FALSE;
}
j2k_codestream_exit = opj_stream_tell(cio);
if (! opj_stream_seek(cio, j2k_codestream_exit, p_manager)) {
opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n");
return OPJ_FALSE;
}
return OPJ_TRUE;
}
#if 0
static void write_prxy(int offset_jp2c, int length_jp2c, int offset_idx,
int length_idx, opj_stream_private_t *cio,
opj_event_mgr_t * p_manager)
{
OPJ_BYTE l_data_header [8];
OPJ_OFF_T len, lenp;
lenp = opj_stream_tell(cio);
opj_stream_skip(cio, 4, p_manager); /* L [at the end] */
opj_write_bytes(l_data_header, JPIP_PRXY, 4); /* IPTR */
opj_stream_write_data(cio, l_data_header, 4, p_manager);
opj_write_bytes(l_data_header, offset_jp2c, 8); /* OOFF */
opj_stream_write_data(cio, l_data_header, 8, p_manager);
opj_write_bytes(l_data_header, length_jp2c, 4); /* OBH part 1 */
opj_write_bytes(l_data_header + 4, JP2_JP2C, 4); /* OBH part 2 */
opj_stream_write_data(cio, l_data_header, 8, p_manager);
opj_write_bytes(l_data_header, 1, 1); /* NI */
opj_stream_write_data(cio, l_data_header, 1, p_manager);
opj_write_bytes(l_data_header, offset_idx, 8); /* IOFF */
opj_stream_write_data(cio, l_data_header, 8, p_manager);
opj_write_bytes(l_data_header, length_idx, 4); /* IBH part 1 */
opj_write_bytes(l_data_header + 4, JPIP_CIDX, 4); /* IBH part 2 */
opj_stream_write_data(cio, l_data_header, 8, p_manager);
len = opj_stream_tell(cio) - lenp;
opj_stream_skip(cio, lenp, p_manager);
opj_write_bytes(l_data_header, len, 4); /* L */
opj_stream_write_data(cio, l_data_header, 4, p_manager);
opj_stream_seek(cio, lenp + len, p_manager);
}
#endif
#if 0
static int write_fidx(int offset_jp2c, int length_jp2c, int offset_idx,
int length_idx, opj_stream_private_t *cio,
opj_event_mgr_t * p_manager)
{
OPJ_BYTE l_data_header [4];
OPJ_OFF_T len, lenp;
lenp = opj_stream_tell(cio);
opj_stream_skip(cio, 4, p_manager);
opj_write_bytes(l_data_header, JPIP_FIDX, 4); /* FIDX */
opj_stream_write_data(cio, l_data_header, 4, p_manager);
write_prxy(offset_jp2c, length_jp2c, offset_idx, length_idx, cio, p_manager);
len = opj_stream_tell(cio) - lenp;
opj_stream_skip(cio, lenp, p_manager);
opj_write_bytes(l_data_header, len, 4); /* L */
opj_stream_write_data(cio, l_data_header, 4, p_manager);
opj_stream_seek(cio, lenp + len, p_manager);
return len;
}
#endif
#endif /* USE_JPIP */