openjpeg/OPJViewer/source/imagj2k.cpp

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/*
* Copyright (c) 2007, Digital Signal Processing Laboratory, Universit<EFBFBD> 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: imagj2k.cpp
// Purpose: wxImage JPEG 2000 codestream handler
// Author: Giuseppe Baruffa - based on imagjpeg.cpp, Vaclav Slavik
// RCS-ID: $Id: imagj2k.cpp,v 0.00 2007/02/08 23:59:00 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 "imagj2k.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 "wx/filefn.h"
#include "wx/wfstream.h"
// ----------------------------------------------------------------------------
// types
// ----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// wxJ2KHandler
//-----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxJ2KHandler,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
/* sample error callback expecting a FILE* client object */
void j2k_error_callback(const char *msg, void *client_data) {
char m_msg[MAX_MESSAGE_LEN];
int message_len = strlen(msg) - 1;
if (msg[message_len] != '\n')
message_len = MAX_MESSAGE_LEN;
sprintf(m_msg, "[ERROR] %.*s", message_len, msg);
wxMutexGuiEnter();
wxLogMessage(m_msg);
wxMutexGuiLeave();
}
/* sample warning callback expecting a FILE* client object */
void j2k_warning_callback(const char *msg, void *client_data) {
char m_msg[MAX_MESSAGE_LEN];
int message_len = strlen(msg) - 1;
if (msg[message_len] != '\n')
message_len = MAX_MESSAGE_LEN;
sprintf(m_msg, "[WARNING] %.*s", message_len, msg);
wxMutexGuiEnter();
wxLogMessage(m_msg);
wxMutexGuiLeave();
}
/* sample debug callback expecting no client object */
void j2k_info_callback(const char *msg, void *client_data) {
char m_msg[MAX_MESSAGE_LEN];
int message_len = strlen(msg) - 1;
if (msg[message_len] != '\n')
message_len = MAX_MESSAGE_LEN;
sprintf(m_msg, "[INFO] %.*s", message_len, msg);
wxMutexGuiEnter();
wxLogMessage(m_msg);
wxMutexGuiLeave();
}
// load the j2k codestream
bool wxJ2KHandler::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;
int shiftbpp;
// destroy the image
image->Destroy();
/* handle to a decompressor */
opj_dinfo_t* dinfo = NULL;
opj_cio_t *cio = NULL;
/* configure the event callbacks (not required) */
memset(&event_mgr, 0, sizeof(opj_event_mgr_t));
event_mgr.error_handler = j2k_error_callback;
event_mgr.warning_handler = j2k_warning_callback;
event_mgr.info_handler = j2k_info_callback;
/* set decoding parameters to default values */
opj_set_default_decoder_parameters(&parameters);
/* prepare parameters */
strncpy(parameters.infile, "", sizeof(parameters.infile)-1);
strncpy(parameters.outfile, "", sizeof(parameters.outfile)-1);
parameters.decod_format = J2K_CFMT;
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 */
dinfo = opj_create_decompress(CODEC_J2K);
/* find length of the stream */
stream.SeekI(0, wxFromEnd);
file_length = (int) stream.TellI();
/* get data */
stream.SeekI(0, wxFromStart);
src = (unsigned char *) malloc(file_length);
stream.Read(src, file_length);
/* 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, &parameters);
/* open a byte stream */
cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);
/* decode the stream and fill the image structure */
opjimage = opj_decode(dinfo, cio);
if (!opjimage) {
wxMutexGuiEnter();
wxLogError(wxT("J2K: failed to decode image!"));
wxMutexGuiLeave();
opj_destroy_decompress(dinfo);
opj_cio_close(cio);
opj_image_destroy(opjimage);
free(src);
return false;
}
/* close the byte stream */
opj_cio_close(cio);
// check image components
if ((opjimage->numcomps != 1) && (opjimage->numcomps != 3)) {
wxMutexGuiEnter();
wxLogError(wxT("J2K: weird number of components"));
wxMutexGuiLeave();
opj_destroy_decompress(dinfo);
free(src);
return false;
}
// check image depth (only on the first one, for now)
shiftbpp = opjimage->comps[0].prec - 8;
// prepare image size
image->Create(opjimage->comps[0].w, opjimage->comps[0].h, true );
// access image raw data
image->SetMask( false );
ptr = image->GetData();
// RGB color picture
if (opjimage->numcomps == 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 {
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 (opjimage->numcomps == 1) {
int row, col;
int *y = opjimage->comps[0].data;
if (shiftbpp > 0) {
for (row = 0; row < opjimage->comps[0].h; row++) {
for (col = 0; col < opjimage->comps[0].w; col++) {
*(ptr++) = (*(y)) >> shiftbpp;
*(ptr++) = (*(y)) >> shiftbpp;
*(ptr++) = (*(y++)) >> shiftbpp;
}
}
} else {
for (row = 0; row < opjimage->comps[0].h; row++) {
for (col = 0; col < opjimage->comps[0].w; col++) {
*(ptr++) = *(y);
*(ptr++) = *(y);
*(ptr++) = *(y++);
}
}
}
}
wxMutexGuiEnter();
wxLogMessage(wxT("J2K: image loaded."));
wxMutexGuiLeave();
/* close openjpeg structs */
opj_destroy_decompress(dinfo);
opj_image_destroy(opjimage);
free(src);
if (!image->Ok())
return false;
else
return true;
}
// save the j2k codestream
bool wxJ2KHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbose )
{
wxLogError(wxT("J2K: Couldn't save image -> not implemented."));
return false;
}
#ifdef __VISUALC__
#pragma warning(default:4611)
#endif /* VC++ */
// recognize the 0xFF4F JPEG 2000 SOC marker
bool wxJ2KHandler::DoCanRead( wxInputStream& stream )
{
unsigned char hdr[2];
if ( !stream.Read(hdr, WXSIZEOF(hdr)) )
return false;
return hdr[0] == 0xFF && hdr[1] == 0x4F;
}
#endif // wxUSE_STREAMS
#endif // wxUSE_LIBOPENJPEG