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Diffstat (limited to 'openjpeg/src/bin/wx/OPJViewer/source/imagjpeg2000.cpp')
| -rw-r--r-- | openjpeg/src/bin/wx/OPJViewer/source/imagjpeg2000.cpp | 1595 |
1 files changed, 1595 insertions, 0 deletions
diff --git a/openjpeg/src/bin/wx/OPJViewer/source/imagjpeg2000.cpp b/openjpeg/src/bin/wx/OPJViewer/source/imagjpeg2000.cpp new file mode 100644 index 000000000..9e1ab90dc --- /dev/null +++ b/openjpeg/src/bin/wx/OPJViewer/source/imagjpeg2000.cpp @@ -0,0 +1,1595 @@ +/* + * 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) 2007, Digital Signal Processing Laboratory, Università degli studi di Perugia (UPG), Italy + * 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. + */ +///////////////////////////////////////////////////////////////////////////// +// Name: imagjpeg2000.cpp +// Purpose: wxImage JPEG 2000 family file format handler +// Author: Giuseppe Baruffa - based on imagjpeg.cpp, Vaclav Slavik +// RCS-ID: $Id: imagjpeg2000.cpp,v 0.00 2008/01/31 10:58:00 MW Exp $ +// Copyright: (c) Giuseppe Baruffa +// Licence: wxWindows licence +///////////////////////////////////////////////////////////////////////////// + +// For compilers that support precompilation, includes "wx.h". +#include "wx/wxprec.h" + +#ifdef __BORLANDC__ +#pragma hdrstop +#endif + +#if wxUSE_IMAGE && wxUSE_LIBOPENJPEG + +#include "imagjpeg2000.h" + +#ifndef WX_PRECOMP +#include "wx/log.h" +#include "wx/app.h" +#include "wx/intl.h" +#include "wx/bitmap.h" +#include "wx/module.h" +#endif + +#include "openjp2/openjpeg.h" + +#include "wx/filefn.h" +#include "wx/wfstream.h" + +// ---------------------------------------------------------------------------- +// types +// ---------------------------------------------------------------------------- + + +//----------------------------------------------------------------------------- +// wxJPEG2000Handler +//----------------------------------------------------------------------------- + +IMPLEMENT_DYNAMIC_CLASS(wxJPEG2000Handler, wxImageHandler) + +#if wxUSE_STREAMS + +//------------- JPEG 2000 Data Source Manager + +#define J2K_CFMT 0 +#define JP2_CFMT 1 +#define JPT_CFMT 2 +#define MJ2_CFMT 3 +#define PXM_DFMT 0 +#define PGX_DFMT 1 +#define BMP_DFMT 2 +#define YUV_DFMT 3 + +#define MAX_MESSAGE_LEN 200 + +/* check file type */ +int +jpeg2000familytype(unsigned char *hdr, int hdr_len) +{ + // check length + if (hdr_len < 24) { + return -1; + } + + // check format + if (hdr[0] == 0x00 && + hdr[1] == 0x00 && + hdr[2] == 0x00 && + hdr[3] == 0x0C && + hdr[4] == 0x6A && + hdr[5] == 0x50 && + hdr[6] == 0x20 && + hdr[7] == 0x20 && + hdr[20] == 0x6A && + hdr[21] == 0x70 && + hdr[22] == 0x32) + // JP2 file format + { + return JP2_CFMT; + } else if (hdr[0] == 0x00 && + hdr[1] == 0x00 && + hdr[2] == 0x00 && + hdr[3] == 0x0C && + hdr[4] == 0x6A && + hdr[5] == 0x50 && + hdr[6] == 0x20 && + hdr[7] == 0x20 && + hdr[20] == 0x6D && + hdr[21] == 0x6A && + hdr[22] == 0x70 && + hdr[23] == 0x32) + // MJ2 file format + { + return MJ2_CFMT; + } else if (hdr[0] == 0xFF && + hdr[1] == 0x4F) + // J2K file format + { + return J2K_CFMT; + } else + // unknown format + { + return -1; + } + +} + +/* we have to use this to avoid GUI-noGUI threads crashing */ +void printevent(const char *msg) +{ +#ifndef __WXGTK__ + wxMutexGuiEnter(); +#endif /* __WXGTK__ */ + wxLogMessage(wxT("%s"), msg); +#ifndef __WXGTK__ + wxMutexGuiLeave(); +#endif /* __WXGTK__ */ +} + +/* sample error callback expecting a FILE* client object */ +void jpeg2000_error_callback(const char *msg, void *client_data) +{ + char mess[MAX_MESSAGE_LEN + 20]; + int message_len = strlen(msg); + + if (message_len > MAX_MESSAGE_LEN) { + message_len = MAX_MESSAGE_LEN; + } + + if (msg[message_len - 1] == '\n') { + message_len--; + } + + sprintf(mess, "[ERROR] %.*s", message_len, msg); + printevent(mess); +} + +/* sample warning callback expecting a FILE* client object */ +void jpeg2000_warning_callback(const char *msg, void *client_data) +{ + char mess[MAX_MESSAGE_LEN + 20]; + int message_len = strlen(msg); + + if (message_len > MAX_MESSAGE_LEN) { + message_len = MAX_MESSAGE_LEN; + } + + if (msg[message_len - 1] == '\n') { + message_len--; + } + + sprintf(mess, "[WARNING] %.*s", message_len, msg); + printevent(mess); +} + +/* sample debug callback expecting no client object */ +void jpeg2000_info_callback(const char *msg, void *client_data) +{ + char mess[MAX_MESSAGE_LEN + 20]; + int message_len = strlen(msg); + + if (message_len > MAX_MESSAGE_LEN) { + message_len = MAX_MESSAGE_LEN; + } + + if (msg[message_len - 1] == '\n') { + message_len--; + } + + sprintf(mess, "[INFO] %.*s", message_len, msg); + printevent(mess); +} + +/* macro functions */ +/* From little endian to big endian, 2 and 4 bytes */ +#define BYTE_SWAP2(X) ((X & 0x00FF) << 8) | ((X & 0xFF00) >> 8) +#define BYTE_SWAP4(X) ((X & 0x000000FF) << 24) | ((X & 0x0000FF00) << 8) | ((X & 0x00FF0000) >> 8) | ((X & 0xFF000000) >> 24) + +#ifdef __WXGTK__ +#define BYTE_SWAP8(X) ((X & 0x00000000000000FFULL) << 56) | ((X & 0x000000000000FF00ULL) << 40) | \ + ((X & 0x0000000000FF0000ULL) << 24) | ((X & 0x00000000FF000000ULL) << 8) | \ + ((X & 0x000000FF00000000ULL) >> 8) | ((X & 0x0000FF0000000000ULL) >> 24) | \ + ((X & 0x00FF000000000000ULL) >> 40) | ((X & 0xFF00000000000000ULL) >> 56) +#else +#define BYTE_SWAP8(X) ((X & 0x00000000000000FF) << 56) | ((X & 0x000000000000FF00) << 40) | \ + ((X & 0x0000000000FF0000) << 24) | ((X & 0x00000000FF000000) << 8) | \ + ((X & 0x000000FF00000000) >> 8) | ((X & 0x0000FF0000000000) >> 24) | \ + ((X & 0x00FF000000000000) >> 40) | ((X & 0xFF00000000000000) >> 56) +#endif + +/* From codestream to int values */ +#define STREAM_TO_UINT32(C, P) (((unsigned long int) (C)[(P) + 0] << 24) + \ + ((unsigned long int) (C)[(P) + 1] << 16) + \ + ((unsigned long int) (C)[(P) + 2] << 8) + \ + ((unsigned long int) (C)[(P) + 3] << 0)) + +#define STREAM_TO_UINT16(C, P) (((unsigned long int) (C)[(P) + 0] << 8) + \ + ((unsigned long int) (C)[(P) + 1] << 0)) + +/* defines */ +#define SHORT_DESCR_LEN 32 +#define LONG_DESCR_LEN 256 + +/* enumeration for file formats */ +#define JPEG2000FILENUM 4 +typedef enum { + + JP2_FILE, + J2K_FILE, + MJ2_FILE, + UNK_FILE + +} jpeg2000filetype; + +/* enumeration for the box types */ +#define JPEG2000BOXNUM 23 +typedef enum { + + FILE_BOX, + JP_BOX, + FTYP_BOX, + JP2H_BOX, + IHDR_BOX, + COLR_BOX, + JP2C_BOX, + JP2I_BOX, + XML_BOX, + UUID_BOX, + UINF_BOX, + MOOV_BOX, + MVHD_BOX, + TRAK_BOX, + TKHD_BOX, + MDIA_BOX, + MINF_BOX, + STBL_BOX, + STSD_BOX, + MJP2_BOX, + MDAT_BOX, + ANY_BOX, + UNK_BOX + +} jpeg2000boxtype; + +/* jpeg2000 family box signatures */ +#define FILE_SIGN "" +#define JP_SIGN "jP\040\040" +#define FTYP_SIGN "ftyp" +#define JP2H_SIGN "jp2h" +#define IHDR_SIGN "ihdr" +#define COLR_SIGN "colr" +#define JP2C_SIGN "jp2c" +#define JP2I_SIGN "jp2i" +#define XML_SIGN "xml\040" +#define UUID_SIGN "uuid" +#define UINF_SIGN "uinf" +#define MOOV_SIGN "moov" +#define MVHD_SIGN "mvhd" +#define TRAK_SIGN "trak" +#define TKHD_SIGN "tkhd" +#define MDIA_SIGN "mdia" +#define MINF_SIGN "minf" +#define VMHD_SIGN "vmhd" +#define STBL_SIGN "stbl" +#define STSD_SIGN "stsd" +#define MJP2_SIGN "mjp2" +#define MDAT_SIGN "mdat" +#define ANY_SIGN "" +#define UNK_SIGN "" + +/* the box structure itself */ +struct jpeg2000boxdef { + + char value[5]; /* hexadecimal value/string*/ + char name[SHORT_DESCR_LEN]; /* short description */ + char descr[LONG_DESCR_LEN]; /* long description */ + int sbox; /* is it a superbox? */ + int req[JPEG2000FILENUM]; /* mandatory box */ + jpeg2000boxtype ins; /* contained in box... */ + +}; + +/* the possible boxes */ +struct jpeg2000boxdef jpeg2000box[] = { + /* sign */ { + FILE_SIGN, + /* short */ "placeholder for nothing", + /* long */ "Nothing to say", + /* sbox */ 0, + /* req */ {1, 1, 1}, + /* ins */ FILE_BOX + }, + + /* sign */ { + JP_SIGN, + /* short */ "JPEG 2000 Signature box", + /* long */ "This box uniquely identifies the file as being part of the JPEG 2000 family of files", + /* sbox */ 0, + /* req */ {1, 1, 1}, + /* ins */ FILE_BOX + }, + + /* sign */ { + FTYP_SIGN, + /* short */ "File Type box", + /* long */ "This box specifies file type, version and compatibility information, including specifying if this file " + "is a conforming JP2 file or if it can be read by a conforming JP2 reader", + /* sbox */ 0, + /* req */ {1, 1, 1}, + /* ins */ FILE_BOX + }, + + /* sign */ { + JP2H_SIGN, + /* short */ "JP2 Header box", + /* long */ "This box contains a series of boxes that contain header-type information about the file", + /* sbox */ 1, + /* req */ {1, 1, 1}, + /* ins */ FILE_BOX + }, + + /* sign */ { + IHDR_SIGN, + /* short */ "Image Header box", + /* long */ "This box specifies the size of the image and other related fields", + /* sbox */ 0, + /* req */ {1, 1, 1}, + /* ins */ JP2H_BOX + }, + + /* sign */ { + COLR_SIGN, + /* short */ "Colour Specification box", + /* long */ "This box specifies the colourspace of the image", + /* sbox */ 0, + /* req */ {1, 1, 1}, + /* ins */ JP2H_BOX + }, + + /* sign */ { + JP2C_SIGN, + /* short */ "Contiguous Codestream box", + /* long */ "This box contains the codestream as defined by Annex A", + /* sbox */ 0, + /* req */ {1, 1, 1}, + /* ins */ FILE_BOX + }, + + /* sign */ { + JP2I_SIGN, + /* short */ "Intellectual Property box", + /* long */ "This box contains intellectual property information about the image", + /* sbox */ 0, + /* req */ {0, 0, 0}, + /* ins */ FILE_BOX + }, + + /* sign */ { + XML_SIGN, + /* short */ "XML box", + /* long */ "This box provides a tool by which vendors can add XML formatted information to a JP2 file", + /* sbox */ 0, + /* req */ {0, 0, 0}, + /* ins */ FILE_BOX + }, + + /* sign */ { + UUID_SIGN, + /* short */ "UUID box", + /* long */ "This box provides a tool by which vendors can add additional information to a file " + "without risking conflict with other vendors", + /* sbox */ 0, + /* req */ {0, 0, 0}, + /* ins */ FILE_BOX + }, + + /* sign */ { + UINF_SIGN, + /* short */ "UUID Info box", + /* long */ "This box provides a tool by which a vendor may provide access to additional information associated with a UUID", + /* sbox */ 0, + /* req */ {0, 0, 0}, + /* ins */ FILE_BOX + }, + + /* sign */ { + MOOV_SIGN, + /* short */ "Movie box", + /* long */ "This box contains the media data. In video tracks, this box would contain JPEG2000 video frames", + /* sbox */ 1, + /* req */ {1, 1, 1}, + /* ins */ FILE_BOX + }, + + /* sign */ { + MVHD_SIGN, + /* short */ "Movie Header box", + /* long */ "This box defines overall information which is media-independent, and relevant to the entire presentation " + "considered as a whole", + /* sbox */ 0, + /* req */ {1, 1, 1}, + /* ins */ MOOV_BOX + }, + + /* sign */ { + TRAK_SIGN, + /* short */ "Track box", + /* long */ "This is a container box for a single track of a presentation. A presentation may consist of one or more tracks", + /* sbox */ 1, + /* req */ {1, 1, 1}, + /* ins */ MOOV_BOX + }, + + /* sign */ { + TKHD_SIGN, + /* short */ "Track Header box", + /* long */ "This box specifies the characteristics of a single track. Exactly one Track Header Box is contained in a track", + /* sbox */ 0, + /* req */ {1, 1, 1}, + /* ins */ TRAK_BOX + }, + + /* sign */ { + MDIA_SIGN, + /* short */ "Media box", + /* long */ "The media declaration container contains all the objects which declare information about the media data " + "within a track", + /* sbox */ 1, + /* req */ {1, 1, 1}, + /* ins */ TRAK_BOX + }, + + /* sign */ { + MINF_SIGN, + /* short */ "Media Information box", + /* long */ "This box contains all the objects which declare characteristic information of the media in the track", + /* sbox */ 1, + /* req */ {1, 1, 1}, + /* ins */ MDIA_BOX + }, + + /* sign */ { + STBL_SIGN, + /* short */ "Sample Table box", + /* long */ "The sample table contains all the time and data indexing of the media samples in a track", + /* sbox */ 1, + /* req */ {1, 1, 1}, + /* ins */ MINF_BOX + }, + + /* sign */ { + STSD_SIGN, + /* short */ "Sample Description box", + /* long */ "The sample description table gives detailed information about the coding type used, and any initialization " + "information needed for that coding", + /* sbox */ 0, + /* req */ {1, 1, 1}, + /* ins */ MINF_BOX + }, + + /* sign */ { + MJP2_SIGN, + /* short */ "MJP2 Sample Description box", + /* long */ "The MJP2 sample description table gives detailed information about the coding type used, and any initialization " + "information needed for that coding", + /* sbox */ 0, + /* req */ {1, 1, 1}, + /* ins */ MINF_BOX + }, + + /* sign */ { + MDAT_SIGN, + /* short */ "Media Data box", + /* long */ "The meta-data for a presentation is stored in the single Movie Box which occurs at the top-level of a file", + /* sbox */ 1, + /* req */ {1, 1, 1}, + /* ins */ FILE_BOX + }, + + /* sign */ { + ANY_SIGN, + /* short */ "Any box", + /* long */ "All the existing boxes", + /* sbox */ 0, + /* req */ {0, 0, 0}, + /* ins */ FILE_BOX + }, + + /* sign */ { + UNK_SIGN, + /* short */ "Unknown Type box", + /* long */ "The signature is not recognised to be that of an existing box", + /* sbox */ 0, + /* req */ {0, 0, 0}, + /* ins */ ANY_BOX + } + +}; + +/* declaration */ +int +jpeg2000_box_handler_function(jpeg2000boxtype boxtype, wxInputStream& stream, + unsigned long int filepoint, + unsigned long int filelimit, int level, char *scansign, + unsigned long int *scanpoint); + +#ifdef __WXMSW__ +typedef unsigned __int64 int8byte; +#endif // __WXMSW__ + +#ifdef __WXGTK__ +typedef unsigned long long int8byte; +#endif // __WXGTK__ + +/* internal mini-search for a box signature */ +int +jpeg2000_file_parse(wxInputStream& stream, unsigned long int filepoint, + unsigned long int filelimit, int level, + char *scansign, unsigned long int *scanpoint) +{ + unsigned long int LBox = 0x00000000; + char TBox[5] = "\0\0\0\0"; + int8byte XLBox = 0x0000000000000000; + unsigned long int box_length = 0; + int last_box = 0, box_num = 0; + int box_type = ANY_BOX; + unsigned char fourbytes[4]; + int box_number = 0; + + /* cycle all over the file */ + box_num = 0; + last_box = 0; + while (!last_box) { + + /* do not exceed file limit */ + if (filepoint >= filelimit) { + return (0); + } + + /* seek on file */ + if (stream.SeekI(filepoint, wxFromStart) == wxInvalidOffset) { + return (-1); + } + + /* read the mandatory LBox, 4 bytes */ + if (!stream.Read(fourbytes, 4)) { + wxLogError(wxT("Problem reading LBox from the file (file ended?)")); + return -1; + }; + LBox = STREAM_TO_UINT32(fourbytes, 0); + + /* read the mandatory TBox, 4 bytes */ + if (!stream.Read(TBox, 4)) { + wxLogError(wxT("Problem reading TBox from the file (file ended?)")); + return -1; + }; + + /* look if scansign is got */ + if ((scansign != NULL) && (memcmp(TBox, scansign, 4) == 0)) { + /* hack/exploit */ + // stop as soon as you find the level-th codebox + if (box_number == level) { + memcpy(scansign, " ", 4); + *scanpoint = filepoint; + return (0); + } else { + box_number++; + } + + }; + + /* determine the box type */ + for (box_type = JP_BOX; box_type < UNK_BOX; box_type++) + if (memcmp(TBox, jpeg2000box[box_type].value, 4) == 0) { + break; + } + + /* read the optional XLBox, 8 bytes */ + if (LBox == 1) { + + if (!stream.Read(&XLBox, 8)) { + wxLogError(wxT("Problem reading XLBox from the file (file ended?)")); + return -1; + }; + box_length = (unsigned long int) BYTE_SWAP8(XLBox); + + } else if (LBox == 0x00000000) { + + /* last box in file */ + last_box = 1; + box_length = filelimit - filepoint; + + } else + + { + box_length = LBox; + } + + + /* go deep in the box */ + jpeg2000_box_handler_function((jpeg2000boxtype) box_type, + stream, (LBox == 1) ? (filepoint + 16) : (filepoint + 8), + filepoint + box_length, level, scansign, scanpoint); + + /* if it's a superbox go inside it */ + if (jpeg2000box[box_type].sbox) + jpeg2000_file_parse(stream, (LBox == 1) ? (filepoint + 16) : (filepoint + 8), + filepoint + box_length, + level, scansign, scanpoint); + + /* increment box number and filepoint*/ + box_num++; + filepoint += box_length; + + }; + + /* all good */ + return (0); +} + +// search first contiguos codestream box in an mj2 file +unsigned long int +searchjpeg2000c(wxInputStream& stream, unsigned long int fsize, int number) +{ + char scansign[] = "jp2c"; + unsigned long int scanpoint = 0L; + + wxLogMessage(wxT("Searching jp2c box... ")); + + /* do the parsing */ + if (jpeg2000_file_parse(stream, 0, fsize, number, scansign, &scanpoint) < 0) { + wxLogMessage( + wxT("Unrecoverable error during JPEG 2000 box parsing: stopping")); + } + + if (strcmp(scansign, " ")) { + wxLogMessage(wxT("Box not found")); + } else { + + wxLogMessage(wxString::Format(wxT("Box found at byte %d"), scanpoint)); + + }; + + return (scanpoint); +} + +// search the jp2h box in the file +unsigned long int +searchjpeg2000headerbox(wxInputStream& stream, unsigned long int fsize) +{ + char scansign[] = "jp2h"; + unsigned long int scanpoint = 0L; + + wxLogMessage(wxT("Searching jp2h box... ")); + + /* do the parsing */ + if (jpeg2000_file_parse(stream, 0, fsize, 0, scansign, &scanpoint) < 0) { + wxLogMessage( + wxT("Unrecoverable error during JPEG 2000 box parsing: stopping")); + } + + if (strcmp(scansign, " ")) { + wxLogMessage(wxT("Box not found")); + } else { + wxLogMessage(wxString::Format(wxT("Box found at byte %d"), scanpoint)); + } + + return (scanpoint); +} + +/* handling functions */ +#define ITEM_PER_ROW 10 + +/* Box handler function */ +int +jpeg2000_box_handler_function(jpeg2000boxtype boxtype, wxInputStream& stream, + unsigned long int filepoint, + unsigned long int filelimit, int level, + char *scansign, unsigned long int *scanpoint) +{ + switch (boxtype) { + + /* Sample Description box */ + case (STSD_BOX): + jpeg2000_file_parse(stream, filepoint + 8, filelimit, level, scansign, + scanpoint); + break; + + /* MJP2 Sample Description box */ + case (MJP2_BOX): + jpeg2000_file_parse(stream, filepoint + 78, filelimit, level, scansign, + scanpoint); + break; + + /* not yet implemented */ + default: + break; + + }; + + return (0); +} + +// the jP and ftyp parts of the header +#define jpeg2000headSIZE 32 +unsigned char jpeg2000head[jpeg2000headSIZE] = { + 0x00, 0x00, 0x00, 0x0C, 'j', 'P', ' ', ' ', + 0x0D, 0x0A, 0x87, 0x0A, 0x00, 0x00, 0x00, 0x14, + 'f', 't', 'y', 'p', 'j', 'p', '2', ' ', + 0x00, 0x00, 0x00, 0x00, 'j', 'p', '2', ' ' +}; + +///////////////////////////////////////////////// +///////////////////////////////////////////////// + +// load the jpeg2000 file format +bool wxJPEG2000Handler::LoadFile(wxImage *image, wxInputStream& stream, + bool verbose, int index) +{ + opj_dparameters_t parameters; /* decompression parameters */ + opj_event_mgr_t event_mgr; /* event manager */ + opj_image_t *opjimage = NULL; + unsigned char *src = NULL; + unsigned char *ptr; + int file_length, jp2c_point, jp2h_point; + unsigned long int jp2hboxlen, jp2cboxlen; + opj_codestream_info_t cstr_info; /* Codestream information structure */ + unsigned char hdr[24]; + int jpfamform; + + // destroy the image + image->Destroy(); + + /* read the beginning of the file to check the type */ + if (!stream.Read(hdr, WXSIZEOF(hdr))) { + return false; + } + if ((jpfamform = jpeg2000familytype(hdr, WXSIZEOF(hdr))) < 0) { + return false; + } + stream.SeekI(0, wxFromStart); + + /* handle to a decompressor */ + opj_dinfo_t* dinfo = NULL; + opj_cio_t *cio = NULL; + + /* configure the event callbacks */ + memset(&event_mgr, 0, sizeof(opj_event_mgr_t)); + event_mgr.error_handler = jpeg2000_error_callback; + event_mgr.warning_handler = jpeg2000_warning_callback; + event_mgr.info_handler = jpeg2000_info_callback; + + /* set decoding parameters to default values */ + opj_set_default_decoder_parameters(¶meters); + + /* prepare parameters */ + strncpy(parameters.infile, "", sizeof(parameters.infile) - 1); + strncpy(parameters.outfile, "", sizeof(parameters.outfile) - 1); + parameters.decod_format = jpfamform; + parameters.cod_format = BMP_DFMT; + if (m_reducefactor) { + parameters.cp_reduce = m_reducefactor; + } + if (m_qualitylayers) { + parameters.cp_layer = m_qualitylayers; + } + /*if (n_components) + parameters. = n_components;*/ + + /* JPWL only */ +#ifdef USE_JPWL + parameters.jpwl_exp_comps = m_expcomps; + parameters.jpwl_max_tiles = m_maxtiles; + parameters.jpwl_correct = m_enablejpwl; +#endif /* USE_JPWL */ + + /* get a decoder handle */ + if (jpfamform == JP2_CFMT || jpfamform == MJ2_CFMT) { + dinfo = opj_create_decompress(CODEC_JP2); + } else if (jpfamform == J2K_CFMT) { + dinfo = opj_create_decompress(CODEC_J2K); + } else { + return false; + } + + /* find length of the stream */ + stream.SeekI(0, wxFromEnd); + file_length = (int) stream.TellI(); + + /* it's a movie */ + if (jpfamform == MJ2_CFMT) { + /* search for the first codestream box and the movie header box */ + jp2c_point = searchjpeg2000c(stream, file_length, m_framenum); + jp2h_point = searchjpeg2000headerbox(stream, file_length); + + // read the jp2h box and store it + stream.SeekI(jp2h_point, wxFromStart); + stream.Read(&jp2hboxlen, sizeof(unsigned long int)); + jp2hboxlen = BYTE_SWAP4(jp2hboxlen); + + // read the jp2c box and store it + stream.SeekI(jp2c_point, wxFromStart); + stream.Read(&jp2cboxlen, sizeof(unsigned long int)); + jp2cboxlen = BYTE_SWAP4(jp2cboxlen); + + // malloc memory source + src = (unsigned char *) malloc(jpeg2000headSIZE + jp2hboxlen + jp2cboxlen); + + // copy the jP and ftyp + memcpy(src, jpeg2000head, jpeg2000headSIZE); + + // copy the jp2h + stream.SeekI(jp2h_point, wxFromStart); + stream.Read(&src[jpeg2000headSIZE], jp2hboxlen); + + // copy the jp2c + stream.SeekI(jp2c_point, wxFromStart); + stream.Read(&src[jpeg2000headSIZE + jp2hboxlen], jp2cboxlen); + } else if (jpfamform == JP2_CFMT || jpfamform == J2K_CFMT) { + /* It's a plain image */ + /* get data */ + stream.SeekI(0, wxFromStart); + src = (unsigned char *) malloc(file_length); + stream.Read(src, file_length); + } else { + return false; + } + + /* catch events using our callbacks and give a local context */ + opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, stderr); + + /* setup the decoder decoding parameters using user parameters */ + opj_setup_decoder(dinfo, ¶meters); + + /* open a byte stream */ + if (jpfamform == MJ2_CFMT) { + cio = opj_cio_open((opj_common_ptr)dinfo, src, + jpeg2000headSIZE + jp2hboxlen + jp2cboxlen); + } else if (jpfamform == JP2_CFMT || jpfamform == J2K_CFMT) { + cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length); + } else { + free(src); + return false; + } + + /* decode the stream and fill the image structure */ + opjimage = opj_decode_with_info(dinfo, cio, &cstr_info); + if (!opjimage) { + wxMutexGuiEnter(); + wxLogError(wxT("JPEG 2000 failed to decode image!")); + wxMutexGuiLeave(); + opj_destroy_decompress(dinfo); + opj_cio_close(cio); + free(src); + return false; + } + + /* close the byte stream */ + opj_cio_close(cio); + + /* + + - At this point, we have the structure "opjimage" that is filled with decompressed + data, as processed by the OpenJPEG decompression engine + + - We need to fill the class "image" with the proper pixel sample values + + */ + { + int shiftbpp; + int c, tempcomps; + + // check components number + if (m_components > opjimage->numcomps) { + m_components = opjimage->numcomps; + } + + // check image depth (only on the first one, for now) + if (m_components) { + shiftbpp = opjimage->comps[m_components - 1].prec - 8; + } else { + shiftbpp = opjimage->comps[0].prec - 8; + } + + // prepare image size + if (m_components) { + image->Create(opjimage->comps[m_components - 1].w, + opjimage->comps[m_components - 1].h, true); + } else { + image->Create(opjimage->comps[0].w, opjimage->comps[0].h, true); + } + + // access image raw data + image->SetMask(false); + ptr = image->GetData(); + + // workaround for components different from 1 or 3 + if ((opjimage->numcomps != 1) && (opjimage->numcomps != 3)) { +#ifndef __WXGTK__ + wxMutexGuiEnter(); +#endif /* __WXGTK__ */ + wxLogMessage(wxT("JPEG2000: weird number of components")); +#ifndef __WXGTK__ + wxMutexGuiLeave(); +#endif /* __WXGTK__ */ + tempcomps = 1; + } else { + tempcomps = opjimage->numcomps; + } + + // workaround for subsampled components + for (c = 1; c < tempcomps; c++) { + if ((opjimage->comps[c].w != opjimage->comps[c - 1].w) || + (opjimage->comps[c].h != opjimage->comps[c - 1].h)) { + tempcomps = 1; + break; + } + } + + // workaround for different precision components + for (c = 1; c < tempcomps; c++) { + if (opjimage->comps[c].bpp != opjimage->comps[c - 1].bpp) { + tempcomps = 1; + break; + } + } + + // only one component selected + if (m_components) { + tempcomps = 1; + } + + // RGB color picture + if (tempcomps == 3) { + int row, col; + int *r = opjimage->comps[0].data; + int *g = opjimage->comps[1].data; + int *b = opjimage->comps[2].data; + if (shiftbpp > 0) { + for (row = 0; row < opjimage->comps[0].h; row++) { + for (col = 0; col < opjimage->comps[0].w; col++) { + + *(ptr++) = (*(r++)) >> shiftbpp; + *(ptr++) = (*(g++)) >> shiftbpp; + *(ptr++) = (*(b++)) >> shiftbpp; + + } + } + + } else if (shiftbpp < 0) { + for (row = 0; row < opjimage->comps[0].h; row++) { + for (col = 0; col < opjimage->comps[0].w; col++) { + + *(ptr++) = (*(r++)) << -shiftbpp; + *(ptr++) = (*(g++)) << -shiftbpp; + *(ptr++) = (*(b++)) << -shiftbpp; + + } + } + + } else { + for (row = 0; row < opjimage->comps[0].h; row++) { + for (col = 0; col < opjimage->comps[0].w; col++) { + + *(ptr++) = *(r++); + *(ptr++) = *(g++); + *(ptr++) = *(b++); + + } + } + } + } + + // B/W picture + if (tempcomps == 1) { + int row, col; + int selcomp; + + if (m_components) { + selcomp = m_components - 1; + } else { + selcomp = 0; + } + + int *y = opjimage->comps[selcomp].data; + if (shiftbpp > 0) { + for (row = 0; row < opjimage->comps[selcomp].h; row++) { + for (col = 0; col < opjimage->comps[selcomp].w; col++) { + + *(ptr++) = (*(y)) >> shiftbpp; + *(ptr++) = (*(y)) >> shiftbpp; + *(ptr++) = (*(y++)) >> shiftbpp; + + } + } + } else if (shiftbpp < 0) { + for (row = 0; row < opjimage->comps[selcomp].h; row++) { + for (col = 0; col < opjimage->comps[selcomp].w; col++) { + + *(ptr++) = (*(y)) << -shiftbpp; + *(ptr++) = (*(y)) << -shiftbpp; + *(ptr++) = (*(y++)) << -shiftbpp; + + } + } + } else { + for (row = 0; row < opjimage->comps[selcomp].h; row++) { + for (col = 0; col < opjimage->comps[selcomp].w; col++) { + + *(ptr++) = *(y); + *(ptr++) = *(y); + *(ptr++) = *(y++); + + } + } + } + } + + + } + + wxMutexGuiEnter(); + wxLogMessage(wxT("JPEG 2000 image loaded.")); + wxMutexGuiLeave(); + + /* close openjpeg structs */ + opj_destroy_decompress(dinfo); + opj_image_destroy(opjimage); + free(src); + + if (!image->Ok()) { + return false; + } else { + return true; + } + +} + +#define CINEMA_24_CS 1302083 /* Codestream length for 24fps */ +#define CINEMA_48_CS 651041 /* Codestream length for 48fps */ +#define COMP_24_CS 1041666 /* Maximum size per color component for 2K & 4K @ 24fps */ +#define COMP_48_CS 520833 /* Maximum size per color component for 2K @ 48fps */ + +// save the j2k codestream +bool wxJPEG2000Handler::SaveFile(wxImage *wimage, wxOutputStream& stream, + bool verbose) +{ + opj_cparameters_t parameters; /* compression parameters */ + opj_event_mgr_t event_mgr; /* event manager */ + opj_image_t *oimage = NULL; + opj_image_cmptparm_t *cmptparm; + opj_cio_t *cio = NULL; + opj_codestream_info_t cstr_info; + int codestream_length; + bool bSuccess; + int i; + char indexfilename[OPJ_PATH_LEN] = ""; /* index file name */ + + /* + configure the event callbacks (not required) + setting of each callback is optional + */ + memset(&event_mgr, 0, sizeof(opj_event_mgr_t)); + event_mgr.error_handler = jpeg2000_error_callback; + event_mgr.warning_handler = jpeg2000_warning_callback; + event_mgr.info_handler = jpeg2000_info_callback; + + /* set encoding parameters to default values */ + opj_set_default_encoder_parameters(¶meters); + + /* load parameters */ + parameters.cp_cinema = OFF; + + /* subsampling */ + if (sscanf(m_subsampling.ToAscii(), "%d,%d", &(parameters.subsampling_dx), + &(parameters.subsampling_dy)) != 2) { + wxLogError(wxT("Wrong sub-sampling encoder setting: dx,dy")); + return false; + } + + /* compression rates */ + if ((m_rates != wxT("")) && (!m_enablequality)) { + const char *s1 = m_rates.ToAscii(); + wxLogMessage(wxT("rates %s"), s1); + while (sscanf(s1, "%f", &(parameters.tcp_rates[parameters.tcp_numlayers])) == + 1) { + parameters.tcp_numlayers++; + while (*s1 && *s1 != ',') { + s1++; + } + if (!*s1) { + break; + } + s1++; + } + wxLogMessage(wxT("%d layers"), parameters.tcp_numlayers); + parameters.cp_disto_alloc = 1; + } + + /* image quality, dB */ + if ((m_quality != wxT("")) && (m_enablequality)) { + const char *s2 = m_quality.ToAscii(); + wxLogMessage(wxT("qualities %s"), s2); + while (sscanf(s2, "%f", ¶meters.tcp_distoratio[parameters.tcp_numlayers]) == + 1) { + parameters.tcp_numlayers++; + while (*s2 && *s2 != ',') { + s2++; + } + if (!*s2) { + break; + } + s2++; + } + wxLogMessage(wxT("%d layers"), parameters.tcp_numlayers); + parameters.cp_fixed_quality = 1; + } + + /* image origin */ + if (sscanf(m_origin.ToAscii(), "%d,%d", ¶meters.image_offset_x0, + ¶meters.image_offset_y0) != 2) { + wxLogError(wxT("bad coordinate of the image origin: x0,y0")); + return false; + } + + /* Create comment for codestream */ + if (m_enablecomm) { + parameters.cp_comment = (char *) malloc(strlen(m_comment.ToAscii()) + 1); + if (parameters.cp_comment) { + strcpy(parameters.cp_comment, m_comment.ToAscii()); + } + } else { + parameters.cp_comment = NULL; + } + + /* indexing file */ + if (m_enableidx) { + strncpy(indexfilename, m_index.ToAscii(), OPJ_PATH_LEN); + wxLogMessage(wxT("index file is %s"), indexfilename); + } + + /* if no rate entered, lossless by default */ + if (parameters.tcp_numlayers == 0) { + parameters.tcp_rates[0] = 0; /* MOD antonin : losslessbug */ + parameters.tcp_numlayers++; + parameters.cp_disto_alloc = 1; + } + + /* irreversible transform */ + parameters.irreversible = (m_irreversible == true) ? 1 : 0; + + /* resolutions */ + parameters.numresolution = m_resolutions; + + /* codeblocks size */ + if (m_cbsize != wxT("")) { + int cblockw_init = 0, cblockh_init = 0; + sscanf(m_cbsize.ToAscii(), "%d,%d", &cblockw_init, &cblockh_init); + if (cblockw_init * cblockh_init > 4096 || cblockw_init > 1024 || + cblockw_init < 4 || cblockh_init > 1024 || cblockh_init < 4) { + wxLogError( + wxT("!! Size of code_block error !! Restrictions:\n width*height<=4096\n 4<=width,height<= 1024")); + return false; + } + parameters.cblockw_init = cblockw_init; + parameters.cblockh_init = cblockh_init; + } + + /* precincts size */ + if (m_prsize != wxT("")) { + char sep; + int res_spec = 0; + char *s = (char *) m_prsize.c_str(); + do { + sep = 0; + sscanf(s, "[%d,%d]%c", ¶meters.prcw_init[res_spec], + ¶meters.prch_init[res_spec], &sep); + parameters.csty |= 0x01; + res_spec++; + s = strpbrk(s, "]") + 2; + } while (sep == ','); + parameters.res_spec = res_spec; + } + + /* tiles */ + if (m_tsize != wxT("")) { + sscanf(m_tsize.ToAscii(), "%d,%d", ¶meters.cp_tdx, ¶meters.cp_tdy); + parameters.tile_size_on = true; + } + + /* tile origin */ + if (sscanf(m_torigin.ToAscii(), "%d,%d", ¶meters.cp_tx0, + ¶meters.cp_ty0) != 2) { + wxLogError(wxT("tile offset setting error: X0,Y0")); + return false; + } + + /* use SOP */ + if (m_enablesop) { + parameters.csty |= 0x02; + } + + /* use EPH */ + if (m_enableeph) { + parameters.csty |= 0x04; + } + + /* multiple component transform */ + if (m_multicomp) { + parameters.tcp_mct = 1; + } else { + parameters.tcp_mct = 0; + } + + /* mode switch */ + parameters.mode = (m_enablebypass ? 1 : 0) + (m_enablereset ? 2 : 0) + + (m_enablerestart ? 4 : 0) + (m_enablevsc ? 8 : 0) + + (m_enableerterm ? 16 : 0) + (m_enablesegmark ? 32 : 0); + + /* progression order */ + switch (m_progression) { + + /* LRCP */ + case 0: + parameters.prog_order = LRCP; + break; + + /* RLCP */ + case 1: + parameters.prog_order = RLCP; + break; + + /* RPCL */ + case 2: + parameters.prog_order = RPCL; + break; + + /* PCRL */ + case 3: + parameters.prog_order = PCRL; + break; + + /* CPRL */ + case 4: + parameters.prog_order = CPRL; + break; + + /* DCI2K24 */ + case 5: + parameters.cp_cinema = CINEMA2K_24; + parameters.cp_rsiz = CINEMA2K; + break; + + /* DCI2K48 */ + case 6: + parameters.cp_cinema = CINEMA2K_48; + parameters.cp_rsiz = CINEMA2K; + break; + + /* DCI4K */ + case 7: + parameters.cp_cinema = CINEMA4K_24; + parameters.cp_rsiz = CINEMA4K; + break; + + default: + break; + } + + /* check cinema */ + if (parameters.cp_cinema) { + + /* set up */ + parameters.tile_size_on = false; + parameters.cp_tdx = 1; + parameters.cp_tdy = 1; + + /*Tile part*/ + parameters.tp_flag = 'C'; + parameters.tp_on = 1; + + /*Tile and Image shall be at (0,0)*/ + parameters.cp_tx0 = 0; + parameters.cp_ty0 = 0; + parameters.image_offset_x0 = 0; + parameters.image_offset_y0 = 0; + + /*Codeblock size= 32*32*/ + parameters.cblockw_init = 32; + parameters.cblockh_init = 32; + parameters.csty |= 0x01; + + /*The progression order shall be CPRL*/ + parameters.prog_order = CPRL; + + /* No ROI */ + parameters.roi_compno = -1; + + parameters.subsampling_dx = 1; + parameters.subsampling_dy = 1; + + /* 9-7 transform */ + parameters.irreversible = 1; + + } + + /* convert wx image into opj image */ + cmptparm = (opj_image_cmptparm_t*) malloc(3 * sizeof(opj_image_cmptparm_t)); + + /* initialize opj image components */ + memset(&cmptparm[0], 0, 3 * sizeof(opj_image_cmptparm_t)); + for (i = 0; i < 3; i++) { + cmptparm[i].prec = 8; + cmptparm[i].bpp = 8; + cmptparm[i].sgnd = false; + cmptparm[i].dx = parameters.subsampling_dx; + cmptparm[i].dy = parameters.subsampling_dy; + cmptparm[i].w = wimage->GetWidth(); + cmptparm[i].h = wimage->GetHeight(); + } + + /* create the image */ + oimage = opj_image_create(3, &cmptparm[0], CLRSPC_SRGB); + if (!oimage) { + if (cmptparm) { + free(cmptparm); + } + return false; + } + + /* set image offset and reference grid */ + oimage->x0 = parameters.image_offset_x0; + oimage->y0 = parameters.image_offset_y0; + oimage->x1 = parameters.image_offset_x0 + (wimage->GetWidth() - 1) * 1 + 1; + oimage->y1 = parameters.image_offset_y0 + (wimage->GetHeight() - 1) * 1 + 1; + + /* load image data */ + unsigned char *value = wimage->GetData(); + int area = wimage->GetWidth() * wimage->GetHeight(); + for (i = 0; i < area; i++) { + oimage->comps[0].data[i] = *(value++); + oimage->comps[1].data[i] = *(value++); + oimage->comps[2].data[i] = *(value++); + } + + /* check cinema again */ + if (parameters.cp_cinema) { + int i; + float temp_rate; + opj_poc_t *POC = NULL; + + switch (parameters.cp_cinema) { + + case CINEMA2K_24: + case CINEMA2K_48: + if (parameters.numresolution > 6) { + parameters.numresolution = 6; + } + if (!((oimage->comps[0].w == 2048) | (oimage->comps[0].h == 1080))) { + wxLogWarning( + wxT("Image coordinates %d x %d is not 2K compliant. JPEG Digital Cinema Profile-3 " + "(2K profile) compliance requires that at least one of coordinates match 2048 x 1080"), + oimage->comps[0].w, oimage->comps[0].h); + parameters.cp_rsiz = STD_RSIZ; + } + break; + + case CINEMA4K_24: + if (parameters.numresolution < 1) { + parameters.numresolution = 1; + } else if (parameters.numresolution > 7) { + parameters.numresolution = 7; + } + if (!((oimage->comps[0].w == 4096) | (oimage->comps[0].h == 2160))) { + wxLogWarning( + wxT("Image coordinates %d x %d is not 4K compliant. JPEG Digital Cinema Profile-4" + "(4K profile) compliance requires that at least one of coordinates match 4096 x 2160"), + oimage->comps[0].w, oimage->comps[0].h); + parameters.cp_rsiz = STD_RSIZ; + } + parameters.POC[0].tile = 1; + parameters.POC[0].resno0 = 0; + parameters.POC[0].compno0 = 0; + parameters.POC[0].layno1 = 1; + parameters.POC[0].resno1 = parameters.numresolution - 1; + parameters.POC[0].compno1 = 3; + parameters.POC[0].prg1 = CPRL; + parameters.POC[1].tile = 1; + parameters.POC[1].resno0 = parameters.numresolution - 1; + parameters.POC[1].compno0 = 0; + parameters.POC[1].layno1 = 1; + parameters.POC[1].resno1 = parameters.numresolution; + parameters.POC[1].compno1 = 3; + parameters.POC[1].prg1 = CPRL; + parameters.numpocs = 2; + break; + } + + switch (parameters.cp_cinema) { + case CINEMA2K_24: + case CINEMA4K_24: + for (i = 0 ; i < parameters.tcp_numlayers; i++) { + temp_rate = 0; + if (parameters.tcp_rates[i] == 0) { + parameters.tcp_rates[0] = ((float)(oimage->numcomps * oimage->comps[0].w * + oimage->comps[0].h * oimage->comps[0].prec)) / + (CINEMA_24_CS * 8 * oimage->comps[0].dx * oimage->comps[0].dy); + } else { + temp_rate = ((float)(oimage->numcomps * oimage->comps[0].w * oimage->comps[0].h + * oimage->comps[0].prec)) / + (parameters.tcp_rates[i] * 8 * oimage->comps[0].dx * oimage->comps[0].dy); + if (temp_rate > CINEMA_24_CS) { + parameters.tcp_rates[i] = ((float)(oimage->numcomps * oimage->comps[0].w * + oimage->comps[0].h * oimage->comps[0].prec)) / + (CINEMA_24_CS * 8 * oimage->comps[0].dx * oimage->comps[0].dy); + } else { + /* do nothing */ + } + } + } + parameters.max_comp_size = COMP_24_CS; + break; + + case CINEMA2K_48: + for (i = 0; i < parameters.tcp_numlayers; i++) { + temp_rate = 0 ; + if (parameters.tcp_rates[i] == 0) { + parameters.tcp_rates[0] = ((float)(oimage->numcomps * oimage->comps[0].w * + oimage->comps[0].h * oimage->comps[0].prec)) / + (CINEMA_48_CS * 8 * oimage->comps[0].dx * oimage->comps[0].dy); + } else { + temp_rate = ((float)(oimage->numcomps * oimage->comps[0].w * oimage->comps[0].h + * oimage->comps[0].prec)) / + (parameters.tcp_rates[i] * 8 * oimage->comps[0].dx * oimage->comps[0].dy); + if (temp_rate > CINEMA_48_CS) { + parameters.tcp_rates[0] = ((float)(oimage->numcomps * oimage->comps[0].w * + oimage->comps[0].h * oimage->comps[0].prec)) / + (CINEMA_48_CS * 8 * oimage->comps[0].dx * oimage->comps[0].dy); + } else { + /* do nothing */ + } + } + } + parameters.max_comp_size = COMP_48_CS; + break; + } + + parameters.cp_disto_alloc = 1; + } + + /* get a J2K compressor handle */ + opj_cinfo_t* cinfo = opj_create_compress(CODEC_J2K); + + /* catch events using our callbacks and give a local context */ + opj_set_event_mgr((opj_common_ptr)cinfo, &event_mgr, stderr); + + /* setup the encoder parameters using the current image and user parameters */ + opj_setup_encoder(cinfo, ¶meters, oimage); + + /* open a byte stream for writing */ + /* allocate memory for all tiles */ + cio = opj_cio_open((opj_common_ptr)cinfo, NULL, 0); + + /* encode the image */ + bSuccess = opj_encode_with_info(cinfo, cio, oimage, &cstr_info); + if (!bSuccess) { + + opj_cio_close(cio); + opj_destroy_compress(cinfo); + opj_image_destroy(oimage); + if (cmptparm) { + free(cmptparm); + } + if (parameters.cp_comment) { + free(parameters.cp_comment); + } + if (parameters.cp_matrice) { + free(parameters.cp_matrice); + } + +#ifndef __WXGTK__ + wxMutexGuiEnter(); +#endif /* __WXGTK__ */ + + wxLogError(wxT("failed to encode image")); + +#ifndef __WXGTK__ + wxMutexGuiLeave(); +#endif /* __WXGTK__ */ + + return false; + } + codestream_length = cio_tell(cio); + wxLogMessage(wxT("Codestream: %d bytes"), codestream_length); + + /* write the buffer to stream */ + stream.Write(cio->buffer, codestream_length); + + /* close and free the byte stream */ + opj_cio_close(cio); + + /* Write the index to disk */ + if (*indexfilename) { + if (write_index_file(&cstr_info, indexfilename)) { + wxLogError(wxT("Failed to output index file")); + } + } + + /* free remaining compression structures */ + opj_destroy_compress(cinfo); + + /* free image data */ + opj_image_destroy(oimage); + + if (cmptparm) { + free(cmptparm); + } + if (parameters.cp_comment) { + free(parameters.cp_comment); + } + if (parameters.cp_matrice) { + free(parameters.cp_matrice); + } + +#ifndef __WXGTK__ + wxMutexGuiEnter(); +#endif /* __WXGTK__ */ + + wxLogMessage(wxT("J2K: Image encoded!")); + +#ifndef __WXGTK__ + wxMutexGuiLeave(); +#endif /* __WXGTK__ */ + + return true; +} + +#ifdef __VISUALC__ +#pragma warning(default:4611) +#endif /* VC++ */ + +// recognize the JPEG 2000 family starting box or the 0xFF4F JPEG 2000 SOC marker +bool wxJPEG2000Handler::DoCanRead(wxInputStream& stream) +{ + unsigned char hdr[24]; + int jpfamform; + + if (!stream.Read(hdr, WXSIZEOF(hdr))) { + return false; + } + + jpfamform = jpeg2000familytype(hdr, WXSIZEOF(hdr)); + + return ((jpfamform == JP2_CFMT) || (jpfamform == MJ2_CFMT) || + (jpfamform == J2K_CFMT)); +} + +#endif // wxUSE_STREAMS + +#endif // wxUSE_LIBOPENJPEG + |