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From Michael Gronenger, updates to JP2 plugin.

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This commit is contained in:
Robert Osfield
2003-10-17 10:23:24 +00:00
parent 42a8ec7eb5
commit 98ed1a8d7d
1 changed files with 173 additions and 4 deletions
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177
src/osgPlugins/jp2/ReaderWriterJP2.cpp
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@@ -6,11 +6,14 @@
#include <osg/GL>
#include <osgDB/FileNameUtils>
#include <osgDB/FileUtils>
#include <osgDB/Registry>
#include <string>
#include <sstream>
#include <vector>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
extern "C"
{
@@ -124,7 +127,8 @@ extern "C" {
}
}
for (y = 0; y < height; ++y)
for (y = height - 1; y >= 0; --y)
// for (y = 0; y < height; ++y)
{
for (x = 0; x < width; ++x)
{
@@ -179,6 +183,13 @@ class ReaderWriterJP2 : public osgDB::ReaderWriter
std::string ext = osgDB::getFileExtension(fileName);
if (!acceptsExtension(ext)) return ReadResult::FILE_NOT_HANDLED;
if(!osgDB::fileExists(fileName))
{
osg::Image *img = new osg::Image;
img->setFileName(fileName);
return img;
}
jas_init();
jas_stream_t* in = jas_stream_fopen(fileName.c_str(), "rb");
@@ -223,13 +234,81 @@ class ReaderWriterJP2 : public osgDB::ReaderWriter
pixelFormat,
dataType,
data,
osg::Image::USE_NEW_DELETE);
// osg::Image::USE_NEW_DELETE);
osg::Image::NO_DELETE);
notify(INFO) << "image read ok "<<s<<" "<<t<< std::endl;
return image;
}
virtual ReadResult readImage(std::istream& fin,const Options* options)
{
char c;
char * sdata;
long ssize;
std::vector<char> vdata;
while(!fin.eof())
{
fin.read(&c, 1);
vdata.push_back(c);
}
ssize = vdata.size();
sdata = &vdata[0];
jas_init();
jas_stream_t* in = jas_stream_memopen((char*)sdata, ssize);
char* opt = 0;
if(options)
{
opt = new char[options->getOptionString().size() + 1];
strcpy(opt, options->getOptionString().c_str());
}
jas_image_t* jimage = jas_image_decode(in, -1, opt); // last is the option string whatto put there?
if(opt) delete[] opt;
int internalFormat = jimage->numcmpts_;
int s = jas_image_width(jimage);
int t = jas_image_height(jimage);
int r = 1;
unsigned char* data = new unsigned char[internalFormat*s*t];
jas_stream_t* mem = jas_stream_memopen((char*)data, internalFormat*s*t);
putdata(mem, jimage, internalFormat);
jas_image_destroy(jimage);
jas_stream_close(in);
jas_image_clearfmts();
unsigned int pixelFormat =
internalFormat == 1 ? GL_LUMINANCE :
internalFormat == 2 ? GL_LUMINANCE_ALPHA :
internalFormat == 3 ? GL_RGB :
internalFormat == 4 ? GL_RGBA : (GLenum)-1;
unsigned int dataType = GL_UNSIGNED_BYTE;
Image* image = new Image();
// image->setFileName(fileName.c_str());
image->setImage(s,t,r,
internalFormat,
pixelFormat,
dataType,
data,
// osg::Image::USE_NEW_DELETE);
osg::Image::NO_DELETE);
notify(INFO) << "image read ok "<<s<<" "<<t<< std::endl;
return image;
}
virtual WriteResult writeImage(const osg::Image &img,const std::string& fileName, const osgDB::ReaderWriter::Options* options)
{
std::string ext = osgDB::getFileExtension(fileName);
@@ -268,7 +347,9 @@ class ReaderWriterJP2 : public osgDB::ReaderWriter
}
else if(internalFormat == 2)
{
return WriteResult::ERROR_IN_WRITING_FILE;
jas_image_setclrspc(jimage, JAS_CLRSPC_GENGRAY);
jas_image_setcmpttype(jimage, 0, JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_GRAY_Y));
jas_image_setcmpttype(jimage, 1, JAS_IMAGE_CT_COLOR(JAS_IMAGE_CT_OPACITY));
}
else if(internalFormat == 3)
{
@@ -310,6 +391,94 @@ class ReaderWriterJP2 : public osgDB::ReaderWriter
return WriteResult::FILE_SAVED;
}
WriteResult writeImage(const osg::Image& img, std::ostream& fout, const Options* options)
{
jas_init();
jas_image_cmptparm_t cmptparms[4];
jas_image_cmptparm_t *cmptparm;
int internalFormat = osg::Image::computeNumComponents(img.getPixelFormat());
jas_stream_t* mem = jas_stream_memopen((char*)img.data(), internalFormat*img.s()*img.t());
/* Create an image of the correct size. */
jas_image_t* jimage;
int i;
for (i = 0, cmptparm = cmptparms; i < internalFormat; ++i, ++cmptparm) {
cmptparm->tlx = 0;
cmptparm->tly = 0;
cmptparm->hstep = 1;
cmptparm->vstep = 1;
cmptparm->width = img.s();
cmptparm->height = img.t();
cmptparm->prec = 8;
cmptparm->sgnd = 0;
}
if (!(jimage = jas_image_create(internalFormat, cmptparms, JAS_CLRSPC_UNKNOWN))) {
return WriteResult::ERROR_IN_WRITING_FILE;
}
if(internalFormat == 1)
{
jas_image_setclrspc(jimage, JAS_CLRSPC_SGRAY);
jas_image_setcmpttype(jimage, 0, JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_GRAY_Y));
}
else if(internalFormat == 2)
{
jas_image_setclrspc(jimage, JAS_CLRSPC_SGRAY);
jas_image_setcmpttype(jimage, 0, JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_GRAY_Y));
jas_image_setcmpttype(jimage, 1, JAS_IMAGE_CT_COLOR(JAS_IMAGE_CT_OPACITY));
}
else if(internalFormat == 3)
{
jas_image_setclrspc(jimage, JAS_CLRSPC_SRGB);
jas_image_setcmpttype(jimage, 0, JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_R));
jas_image_setcmpttype(jimage, 1, JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_G));
jas_image_setcmpttype(jimage, 2, JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_B));
}
else if(internalFormat == 4)
{
jas_image_setclrspc(jimage, JAS_CLRSPC_SRGB);
jas_image_setcmpttype(jimage, 0, JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_R));
jas_image_setcmpttype(jimage, 1, JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_G));
jas_image_setcmpttype(jimage, 2, JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_B));
jas_image_setcmpttype(jimage, 3, JAS_IMAGE_CT_COLOR(JAS_IMAGE_CT_OPACITY));
}
getdata(mem, jimage);
jas_stream_t* out = jas_stream_memopen(0, 0);
// jas_stream_t* out = jas_stream_fopen(fileName.c_str(), "wb");
if (!out)
return WriteResult::ERROR_IN_WRITING_FILE;
char* opt = 0;
if(options)
{
opt = new char[options->getOptionString().size() + 1];
strcpy(opt, options->getOptionString().c_str());
}
jas_image_encode(jimage, out, jas_image_strtofmt("jp2"), opt);
if(opt) delete[] opt;
jas_stream_flush(out);
// now the encoded jp2 image resides in the out->buf_ member with size out->len_ we now need to stream it to a std::ostream
jas_stream_memobj_t* obj = (jas_stream_memobj_t*) out->obj_;
fout.write((char*)obj->buf_, obj->len_);
fout << std::flush;
jas_stream_close(out);
jas_image_destroy(jimage);
jas_image_clearfmts();
return WriteResult::FILE_SAVED;
}
};
// now register with Registry to instantiate the above