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From Per Fahlberg, added support for writing 16-bit rgb images

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This commit is contained in:
Robert Osfield 2006-11-29 20:10:08 +00:00
parent b7b4fd5928
commit f2b2f00ea1
1 changed files with 33 additions and 13 deletions
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46
src/osgPlugins/rgb/ReaderWriterRGB.cpp
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@ -547,7 +547,10 @@ class ReaderWriterRGB : public osgDB::ReaderWriter
GLenum pixelFormat = img.getPixelFormat();
raw.dim =
raw.dim = 3;
raw.sizeX = img.s();
raw.sizeY = img.t();
raw.sizeZ =
pixelFormat == GL_COLOR_INDEX? 1 :
pixelFormat == GL_RED? 1 :
pixelFormat == GL_GREEN? 1 :
@ -559,31 +562,48 @@ class ReaderWriterRGB : public osgDB::ReaderWriter
pixelFormat == GL_BGRA? 4 :
pixelFormat == GL_LUMINANCE? 1 :
pixelFormat == GL_LUMINANCE_ALPHA ? 2 : 1;
raw.sizeX = img.s();
raw.sizeY = img.t();
raw.sizeZ = raw.dim;
raw.min = 0;
raw.max = 0xFF;
raw.wasteBytes = 0;
strncpy( raw.name, name.c_str(), 80);
raw.colorMap = 0;
raw.bpc = (img.getPixelSizeInBits()/raw.sizeZ)/8;
int isize = img.getImageSizeInBytes();
unsigned char *buffer = new unsigned char[isize];
unsigned char *dptr = buffer;
int i, j;
for( i = 0; i < raw.sizeZ; i++ )
if(raw.bpc == 1)
{
const unsigned char *ptr = img.data();
ptr += i;
for( j = 0; j < isize/raw.sizeZ; j++ )
unsigned char *dptr = buffer;
int i, j;
for( i = 0; i < raw.sizeZ; ++i )
{
*(dptr++) = *ptr;
ptr += raw.sizeZ;
const unsigned char *ptr = img.data();
ptr += i;
for( j = 0; j < isize/raw.sizeZ; ++j )
{
*(dptr++) = *ptr;
ptr += raw.sizeZ;
}
}
}
else
{ // bpc == 2
unsigned short *dptr = reinterpret_cast<unsigned short*>(buffer);
int i, j;
for( i = 0; i < raw.sizeZ; ++i )
{
const unsigned short *ptr = reinterpret_cast<const unsigned short*>(img.data());
ptr += i;
for( j = 0; j < isize/(raw.sizeZ*2); ++j )
{
*dptr = *ptr;
ConvertShort(dptr++, 1);
ptr += raw.sizeZ;
}
}
}
if( raw.needsBytesSwapped() )
raw.swapBytes();