2 * Copyright (c) 2007, Digital Signal Processing Laboratory, Universit� degli studi di Perugia (UPG), Italy
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3 * All rights reserved.
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5 * Redistribution and use in source and binary forms, with or without
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6 * modification, are permitted provided that the following conditions
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8 * 1. Redistributions of source code must retain the above copyright
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9 * notice, this list of conditions and the following disclaimer.
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10 * 2. Redistributions in binary form must reproduce the above copyright
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11 * notice, this list of conditions and the following disclaimer in the
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12 * documentation and/or other materials provided with the distribution.
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14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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17 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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18 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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24 * POSSIBILITY OF SUCH DAMAGE.
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26 /////////////////////////////////////////////////////////////////////////////
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27 // Name: imagjp2.cpp
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28 // Purpose: wxImage JPEG 2000 file format handler
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29 // Author: Giuseppe Baruffa - based on imagjpeg.cpp, Vaclav Slavik
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30 // RCS-ID: $Id: imagjp2.cpp,v 0.00 2007/02/08 23:59:00 MW Exp $
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31 // Copyright: (c) Giuseppe Baruffa
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32 // Licence: wxWindows licence
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33 /////////////////////////////////////////////////////////////////////////////
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35 // For compilers that support precompilation, includes "wx.h".
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36 #include "wx/wxprec.h"
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42 #if wxUSE_IMAGE && wxUSE_LIBOPENJPEG
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44 #include "imagjp2.h"
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49 #include "wx/intl.h"
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50 #include "wx/bitmap.h"
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51 #include "wx/module.h"
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55 #include "libopenjpeg/openjpeg.h"
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58 #include "wx/filefn.h"
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59 #include "wx/wfstream.h"
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61 // ----------------------------------------------------------------------------
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63 // ----------------------------------------------------------------------------
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66 //-----------------------------------------------------------------------------
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68 //-----------------------------------------------------------------------------
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70 IMPLEMENT_DYNAMIC_CLASS(wxJP2Handler,wxImageHandler)
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74 //------------- JPEG 2000 Data Source Manager
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85 #define MAX_MESSAGE_LEN 200
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87 /* sample error callback expecting a FILE* client object */
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88 void jp2_error_callback(const char *msg, void *client_data) {
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89 int message_len = strlen(msg) - 1;
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90 if (msg[message_len] != '\n')
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91 message_len = MAX_MESSAGE_LEN;
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94 #endif /* __WXGTK__ */
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95 wxLogMessage(wxT("[ERROR] %.*s"), message_len, msg);
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98 #endif /* __WXGTK__ */
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101 /* sample warning callback expecting a FILE* client object */
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102 void jp2_warning_callback(const char *msg, void *client_data) {
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103 int message_len = strlen(msg) - 1;
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104 if (msg[message_len] != '\n')
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105 message_len = MAX_MESSAGE_LEN;
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108 #endif /* __WXGTK__ */
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109 wxLogMessage(wxT("[WARNING] %.*s"), message_len, msg);
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112 #endif /* __WXGTK__ */
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115 /* sample debug callback expecting no client object */
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116 void jp2_info_callback(const char *msg, void *client_data) {
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117 int message_len = strlen(msg) - 1;
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118 if (msg[message_len] != '\n')
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119 message_len = MAX_MESSAGE_LEN;
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122 #endif /* __WXGTK__ */
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123 wxLogMessage(wxT("[INFO] %.*s"), message_len, msg);
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126 #endif /* __WXGTK__ */
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129 // load the jp2 file format
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130 bool wxJP2Handler::LoadFile(wxImage *image, wxInputStream& stream, bool verbose, int index)
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132 opj_dparameters_t parameters; /* decompression parameters */
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133 opj_event_mgr_t event_mgr; /* event manager */
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134 opj_image_t *opjimage = NULL;
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135 unsigned char *src = NULL;
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136 unsigned char *ptr;
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139 // destroy the image
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142 /* handle to a decompressor */
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143 opj_dinfo_t* dinfo = NULL;
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144 opj_cio_t *cio = NULL;
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146 /* configure the event callbacks (not required) */
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147 memset(&event_mgr, 0, sizeof(opj_event_mgr_t));
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148 event_mgr.error_handler = jp2_error_callback;
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149 event_mgr.warning_handler = jp2_warning_callback;
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150 event_mgr.info_handler = jp2_info_callback;
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152 /* set decoding parameters to default values */
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153 opj_set_default_decoder_parameters(¶meters);
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155 /* prepare parameters */
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156 strncpy(parameters.infile, "", sizeof(parameters.infile)-1);
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157 strncpy(parameters.outfile, "", sizeof(parameters.outfile)-1);
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158 parameters.decod_format = JP2_CFMT;
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159 parameters.cod_format = BMP_DFMT;
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160 if (m_reducefactor)
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161 parameters.cp_reduce = m_reducefactor;
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162 if (m_qualitylayers)
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163 parameters.cp_layer = m_qualitylayers;
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164 /*if (n_components)
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165 parameters. = n_components;*/
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169 parameters.jpwl_exp_comps = m_expcomps;
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170 parameters.jpwl_max_tiles = m_maxtiles;
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171 parameters.jpwl_correct = m_enablejpwl;
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172 #endif /* USE_JPWL */
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174 /* get a decoder handle */
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175 dinfo = opj_create_decompress(CODEC_JP2);
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177 /* find length of the stream */
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178 stream.SeekI(0, wxFromEnd);
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179 file_length = (int) stream.TellI();
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182 stream.SeekI(0, wxFromStart);
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183 src = (unsigned char *) malloc(file_length);
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184 stream.Read(src, file_length);
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186 /* catch events using our callbacks and give a local context */
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187 opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, stderr);
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189 /* setup the decoder decoding parameters using user parameters */
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190 opj_setup_decoder(dinfo, ¶meters);
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192 /* open a byte stream */
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193 cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);
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195 /* decode the stream and fill the image structure */
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196 opjimage = opj_decode(dinfo, cio);
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200 #endif /* __WXGTK__ */
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201 wxLogError(wxT("JP2: failed to decode image!"));
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204 #endif /* __WXGTK__ */
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205 opj_destroy_decompress(dinfo);
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206 opj_cio_close(cio);
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211 /* close the byte stream */
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212 opj_cio_close(cio);
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214 /* common rendering method */
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215 #include "imagjpeg2000.cpp"
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219 #endif /* __WXGTK__ */
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220 wxLogMessage(wxT("JP2: image loaded."));
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223 #endif /* __WXGTK__ */
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225 /* close openjpeg structs */
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226 opj_destroy_decompress(dinfo);
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227 opj_image_destroy(opjimage);
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237 // save the jp2 file format
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238 bool wxJP2Handler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbose )
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242 #endif /* __WXGTK__ */
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243 wxLogError(wxT("JP2: Couldn't save image -> not implemented."));
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246 #endif /* __WXGTK__ */
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252 #pragma warning(default:4611)
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255 // recognize the JPEG 2000 starting box
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256 bool wxJP2Handler::DoCanRead( wxInputStream& stream )
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258 unsigned char hdr[23];
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260 if ( !stream.Read(hdr, WXSIZEOF(hdr)) )
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263 return (hdr[0] == 0x00 &&
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276 #endif // wxUSE_STREAMS
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278 #endif // wxUSE_LIBOPENJPEG
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