Added the OPJViewer Module (/OPJViewer), developed by Giuseppe Baruffa of the University of Perugia
This commit is contained in:
Francois-Olivier Devaux
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OPJViewer/source/imagj2k.cpp
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312
OPJViewer/source/imagj2k.cpp
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/*
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* Copyright (c) 2007, Digital Signal Processing Laboratory, Universit<69> degli studi di Perugia (UPG), Italy
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/////////////////////////////////////////////////////////////////////////////
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// Name: imagj2k.cpp
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// Purpose: wxImage JPEG 2000 codestream handler
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// Author: Giuseppe Baruffa - based on imagjpeg.cpp, Vaclav Slavik
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// RCS-ID: $Id: imagj2k.cpp,v 0.00 2007/02/08 23:59:00 MW Exp $
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// Copyright: (c) Giuseppe Baruffa
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#if wxUSE_IMAGE && wxUSE_LIBOPENJPEG
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#include "imagj2k.h"
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#ifndef WX_PRECOMP
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#include "wx/log.h"
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#include "wx/app.h"
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#include "wx/intl.h"
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#include "wx/bitmap.h"
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#include "wx/module.h"
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#endif
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#include "libopenjpeg/openjpeg.h"
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#include "wx/filefn.h"
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#include "wx/wfstream.h"
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// ----------------------------------------------------------------------------
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// types
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// ----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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// wxJ2KHandler
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//-----------------------------------------------------------------------------
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IMPLEMENT_DYNAMIC_CLASS(wxJ2KHandler,wxImageHandler)
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#if wxUSE_STREAMS
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//------------- JPEG 2000 Data Source Manager
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#define J2K_CFMT 0
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#define JP2_CFMT 1
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#define JPT_CFMT 2
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#define MJ2_CFMT 3
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#define PXM_DFMT 0
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#define PGX_DFMT 1
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#define BMP_DFMT 2
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#define YUV_DFMT 3
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#define MAX_MESSAGE_LEN 200
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/* sample error callback expecting a FILE* client object */
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void j2k_error_callback(const char *msg, void *client_data) {
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char m_msg[MAX_MESSAGE_LEN];
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int message_len = strlen(msg) - 1;
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if (msg[message_len] != '\n')
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message_len = MAX_MESSAGE_LEN;
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sprintf(m_msg, "[ERROR] %.*s", message_len, msg);
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wxMutexGuiEnter();
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wxLogMessage(m_msg);
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wxMutexGuiLeave();
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}
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/* sample warning callback expecting a FILE* client object */
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void j2k_warning_callback(const char *msg, void *client_data) {
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char m_msg[MAX_MESSAGE_LEN];
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int message_len = strlen(msg) - 1;
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if (msg[message_len] != '\n')
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message_len = MAX_MESSAGE_LEN;
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sprintf(m_msg, "[WARNING] %.*s", message_len, msg);
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wxMutexGuiEnter();
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wxLogMessage(m_msg);
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wxMutexGuiLeave();
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}
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/* sample debug callback expecting no client object */
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void j2k_info_callback(const char *msg, void *client_data) {
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char m_msg[MAX_MESSAGE_LEN];
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int message_len = strlen(msg) - 1;
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if (msg[message_len] != '\n')
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message_len = MAX_MESSAGE_LEN;
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sprintf(m_msg, "[INFO] %.*s", message_len, msg);
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wxMutexGuiEnter();
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wxLogMessage(m_msg);
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wxMutexGuiLeave();
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}
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// load the j2k codestream
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bool wxJ2KHandler::LoadFile(wxImage *image, wxInputStream& stream, bool verbose, int index)
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{
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opj_dparameters_t parameters; /* decompression parameters */
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opj_event_mgr_t event_mgr; /* event manager */
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opj_image_t *opjimage = NULL;
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FILE *fsrc = NULL;
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unsigned char *src = NULL;
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unsigned char *ptr;
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int file_length;
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int shiftbpp;
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// destroy the image
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image->Destroy();
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/* handle to a decompressor */
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opj_dinfo_t* dinfo = NULL;
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opj_cio_t *cio = NULL;
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/* configure the event callbacks (not required) */
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memset(&event_mgr, 0, sizeof(opj_event_mgr_t));
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event_mgr.error_handler = j2k_error_callback;
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event_mgr.warning_handler = j2k_warning_callback;
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event_mgr.info_handler = j2k_info_callback;
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/* set decoding parameters to default values */
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opj_set_default_decoder_parameters(¶meters);
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/* prepare parameters */
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parameters.decod_format = J2K_CFMT;
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parameters.cod_format = BMP_DFMT;
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/* JPWL only */
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#ifdef USE_JPWL
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parameters.jpwl_exp_comps = 3;
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parameters.jpwl_max_tiles = 100;
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parameters.jpwl_correct = true;
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#endif /* USE_JPWL */
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/* get a decoder handle */
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dinfo = opj_create_decompress(CODEC_J2K);
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/* find length of the stream */
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stream.SeekI(0, wxFromEnd);
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file_length = (int) stream.TellI();
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/* get data */
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stream.SeekI(0, wxFromStart);
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src = (unsigned char *) malloc(file_length);
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stream.Read(src, file_length);
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/* catch events using our callbacks and give a local context */
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opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, stderr);
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/* setup the decoder decoding parameters using user parameters */
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opj_setup_decoder(dinfo, ¶meters);
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/* open a byte stream */
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cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);
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/* decode the stream and fill the image structure */
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opjimage = opj_decode(dinfo, cio);
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if (!opjimage) {
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wxMutexGuiEnter();
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wxLogError("J2K: failed to decode image!");
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wxMutexGuiLeave();
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opj_destroy_decompress(dinfo);
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opj_cio_close(cio);
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opj_image_destroy(opjimage);
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free(src);
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return false;
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}
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// check image components
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if ((opjimage->numcomps != 1) && (opjimage->numcomps != 3)) {
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wxMutexGuiEnter();
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wxLogError("J2K: weird number of components");
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wxMutexGuiLeave();
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opj_destroy_decompress(dinfo);
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opj_cio_close(cio);
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free(src);
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return false;
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}
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// check image depth (only on the first one, for now)
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shiftbpp = opjimage->comps[0].prec - 8;
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// prepare image size
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image->Create(opjimage->comps[0].w, opjimage->comps[0].h, true );
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// access image raw data
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image->SetMask( false );
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ptr = image->GetData();
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// RGB color picture
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if (opjimage->numcomps == 3) {
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int row, col;
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int *r = opjimage->comps[0].data;
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int *g = opjimage->comps[1].data;
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int *b = opjimage->comps[2].data;
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if (shiftbpp > 0) {
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for (row = 0; row < opjimage->comps[0].h; row++) {
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for (col = 0; col < opjimage->comps[0].w; col++) {
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*(ptr++) = (*(r++)) >> shiftbpp;
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*(ptr++) = (*(g++)) >> shiftbpp;
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*(ptr++) = (*(b++)) >> shiftbpp;
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}
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}
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} else {
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for (row = 0; row < opjimage->comps[0].h; row++) {
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for (col = 0; col < opjimage->comps[0].w; col++) {
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*(ptr++) = *(r++);
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*(ptr++) = *(g++);
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*(ptr++) = *(b++);
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}
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}
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}
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}
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// B/W picture
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if (opjimage->numcomps == 1) {
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int row, col;
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int *y = opjimage->comps[0].data;
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if (shiftbpp > 0) {
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for (row = 0; row < opjimage->comps[0].h; row++) {
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for (col = 0; col < opjimage->comps[0].w; col++) {
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*(ptr++) = (*(y)) >> shiftbpp;
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*(ptr++) = (*(y)) >> shiftbpp;
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*(ptr++) = (*(y++)) >> shiftbpp;
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}
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}
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} else {
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for (row = 0; row < opjimage->comps[0].h; row++) {
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for (col = 0; col < opjimage->comps[0].w; col++) {
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*(ptr++) = *(y);
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*(ptr++) = *(y);
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*(ptr++) = *(y++);
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}
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}
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}
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}
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wxMutexGuiEnter();
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wxLogMessage(wxT("J2K: image loaded."));
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wxMutexGuiLeave();
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/* close openjpeg structs */
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opj_destroy_decompress(dinfo);
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opj_cio_close(cio);
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opj_image_destroy(opjimage);
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free(src);
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if (!image->Ok())
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return false;
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else
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return true;
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}
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// save the j2k codestream
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bool wxJ2KHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbose )
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{
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wxLogError(wxT("J2K: Couldn't save image -> not implemented."));
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return false;
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}
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#ifdef __VISUALC__
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#pragma warning(default:4611)
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#endif /* VC++ */
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// recognize the 0xFF4F JPEG 2000 SOC marker
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bool wxJ2KHandler::DoCanRead( wxInputStream& stream )
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{
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unsigned char hdr[2];
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if ( !stream.Read(hdr, WXSIZEOF(hdr)) )
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return false;
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return hdr[0] == 0xFF && hdr[1] == 0x4F;
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}
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#endif // wxUSE_STREAMS
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#endif // wxUSE_LIBOPENJPEG
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