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: imagj2k.cpp
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28 // Purpose: wxImage JPEG 2000 codestream handler
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29 // Author: Giuseppe Baruffa - based on imagjpeg.cpp, Vaclav Slavik
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30 // RCS-ID: $Id: imagj2k.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 "imagj2k.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(wxJ2KHandler,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 j2k_error_callback(const char *msg, void *client_data) {
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89 char m_msg[MAX_MESSAGE_LEN];
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90 int message_len = strlen(msg) - 1;
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91 if (msg[message_len] != '\n')
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92 message_len = MAX_MESSAGE_LEN;
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93 sprintf(m_msg, "[ERROR] %.*s", message_len, msg);
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95 wxLogMessage(m_msg);
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98 /* sample warning callback expecting a FILE* client object */
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99 void j2k_warning_callback(const char *msg, void *client_data) {
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100 char m_msg[MAX_MESSAGE_LEN];
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101 int message_len = strlen(msg) - 1;
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102 if (msg[message_len] != '\n')
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103 message_len = MAX_MESSAGE_LEN;
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104 sprintf(m_msg, "[WARNING] %.*s", message_len, msg);
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106 wxLogMessage(m_msg);
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109 /* sample debug callback expecting no client object */
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110 void j2k_info_callback(const char *msg, void *client_data) {
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111 char m_msg[MAX_MESSAGE_LEN];
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112 int message_len = strlen(msg) - 1;
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113 if (msg[message_len] != '\n')
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114 message_len = MAX_MESSAGE_LEN;
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115 sprintf(m_msg, "[INFO] %.*s", message_len, msg);
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117 wxLogMessage(m_msg);
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121 // load the j2k codestream
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122 bool wxJ2KHandler::LoadFile(wxImage *image, wxInputStream& stream, bool verbose, int index)
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124 opj_dparameters_t parameters; /* decompression parameters */
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125 opj_event_mgr_t event_mgr; /* event manager */
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126 opj_image_t *opjimage = NULL;
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128 unsigned char *src = NULL;
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129 unsigned char *ptr;
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133 // destroy the image
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136 /* handle to a decompressor */
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137 opj_dinfo_t* dinfo = NULL;
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138 opj_cio_t *cio = NULL;
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140 /* configure the event callbacks (not required) */
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141 memset(&event_mgr, 0, sizeof(opj_event_mgr_t));
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142 event_mgr.error_handler = j2k_error_callback;
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143 event_mgr.warning_handler = j2k_warning_callback;
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144 event_mgr.info_handler = j2k_info_callback;
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146 /* set decoding parameters to default values */
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147 opj_set_default_decoder_parameters(¶meters);
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149 /* prepare parameters */
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150 parameters.decod_format = J2K_CFMT;
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151 parameters.cod_format = BMP_DFMT;
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155 parameters.jpwl_exp_comps = 3;
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156 parameters.jpwl_max_tiles = 100;
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157 parameters.jpwl_correct = true;
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158 #endif /* USE_JPWL */
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160 /* get a decoder handle */
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161 dinfo = opj_create_decompress(CODEC_J2K);
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163 /* find length of the stream */
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164 stream.SeekI(0, wxFromEnd);
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165 file_length = (int) stream.TellI();
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168 stream.SeekI(0, wxFromStart);
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169 src = (unsigned char *) malloc(file_length);
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170 stream.Read(src, file_length);
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172 /* catch events using our callbacks and give a local context */
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173 opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, stderr);
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175 /* setup the decoder decoding parameters using user parameters */
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176 opj_setup_decoder(dinfo, ¶meters);
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178 /* open a byte stream */
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179 cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);
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181 /* decode the stream and fill the image structure */
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182 opjimage = opj_decode(dinfo, cio);
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185 wxLogError("J2K: failed to decode image!");
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187 opj_destroy_decompress(dinfo);
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188 opj_cio_close(cio);
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189 opj_image_destroy(opjimage);
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194 // check image components
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195 if ((opjimage->numcomps != 1) && (opjimage->numcomps != 3)) {
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197 wxLogError("J2K: weird number of components");
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199 opj_destroy_decompress(dinfo);
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200 opj_cio_close(cio);
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205 // check image depth (only on the first one, for now)
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206 shiftbpp = opjimage->comps[0].prec - 8;
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208 // prepare image size
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209 image->Create(opjimage->comps[0].w, opjimage->comps[0].h, true );
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211 // access image raw data
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212 image->SetMask( false );
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213 ptr = image->GetData();
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215 // RGB color picture
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216 if (opjimage->numcomps == 3) {
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218 int *r = opjimage->comps[0].data;
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219 int *g = opjimage->comps[1].data;
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220 int *b = opjimage->comps[2].data;
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221 if (shiftbpp > 0) {
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222 for (row = 0; row < opjimage->comps[0].h; row++) {
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223 for (col = 0; col < opjimage->comps[0].w; col++) {
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225 *(ptr++) = (*(r++)) >> shiftbpp;
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226 *(ptr++) = (*(g++)) >> shiftbpp;
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227 *(ptr++) = (*(b++)) >> shiftbpp;
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232 for (row = 0; row < opjimage->comps[0].h; row++) {
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233 for (col = 0; col < opjimage->comps[0].w; col++) {
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245 if (opjimage->numcomps == 1) {
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247 int *y = opjimage->comps[0].data;
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248 if (shiftbpp > 0) {
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249 for (row = 0; row < opjimage->comps[0].h; row++) {
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250 for (col = 0; col < opjimage->comps[0].w; col++) {
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252 *(ptr++) = (*(y)) >> shiftbpp;
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253 *(ptr++) = (*(y)) >> shiftbpp;
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254 *(ptr++) = (*(y++)) >> shiftbpp;
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259 for (row = 0; row < opjimage->comps[0].h; row++) {
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260 for (col = 0; col < opjimage->comps[0].w; col++) {
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272 wxLogMessage(wxT("J2K: image loaded."));
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275 /* close openjpeg structs */
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276 opj_destroy_decompress(dinfo);
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277 opj_cio_close(cio);
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278 opj_image_destroy(opjimage);
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288 // save the j2k codestream
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289 bool wxJ2KHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbose )
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291 wxLogError(wxT("J2K: Couldn't save image -> not implemented."));
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296 #pragma warning(default:4611)
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299 // recognize the 0xFF4F JPEG 2000 SOC marker
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300 bool wxJ2KHandler::DoCanRead( wxInputStream& stream )
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302 unsigned char hdr[2];
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304 if ( !stream.Read(hdr, WXSIZEOF(hdr)) )
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307 return hdr[0] == 0xFF && hdr[1] == 0x4F;
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310 #endif // wxUSE_STREAMS
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312 #endif // wxUSE_LIBOPENJPEG
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