diff options
| author | Giuseppe Baruffa <gbaruffa@users.noreply.github.com> | 2007-06-03 17:34:46 +0000 |
|---|---|---|
| committer | Giuseppe Baruffa <gbaruffa@users.noreply.github.com> | 2007-06-03 17:34:46 +0000 |
| commit | adc1aacb600419d6ce8427d652da4f53efc5e408 (patch) | |
| tree | e7fc5870fb2cc0e6b9c37e7fb1a9e7c7f68b9e35 /OPJViewer/source/imagjpeg2000.cpp | |
| parent | 814bab690015913c4cad6b713871296e29205272 (diff) | |
OPJViewer opens now BMP, PNG, GIF, PNM, TIFF (with wxWidgets internals); added an encoder settings tab, for future integration with "save file as..." in JPEG 2000 format
Diffstat (limited to 'OPJViewer/source/imagjpeg2000.cpp')
| -rw-r--r-- | OPJViewer/source/imagjpeg2000.cpp | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/OPJViewer/source/imagjpeg2000.cpp b/OPJViewer/source/imagjpeg2000.cpp new file mode 100644 index 00000000..967bbad3 --- /dev/null +++ b/OPJViewer/source/imagjpeg2000.cpp @@ -0,0 +1,186 @@ +/*
+ * 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 imagage rendering common functions
+// Author: Giuseppe Baruffa
+// RCS-ID: $Id: imagjpeg2000.cpp,v 0.00 2007/04/27 22:11:00 MW Exp $
+// Copyright: (c) Giuseppe Baruffa
+// Licence: wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+/*
+
+- 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++);
+
+ }
+ }
+ }
+ }
+
+
+}
\ No newline at end of file |