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/*
$Id: gem.c 4621 2009-11-01 21:18:17Z matju $
GridFlow
Copyright (c) 2001-2009 by Mathieu Bouchard
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
See file ../COPYING for further informations on licensing terms.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "gridflow.hxx.fcs"
#include <GL/gl.h>
/* summarising GEM's headers: GemState.h and GemPixUtil.h */
struct imageStruct {
imageStruct(); ~imageStruct();
unsigned char* allocate(size_t size); unsigned char* allocate();
unsigned char* reallocate(size_t size); unsigned char* reallocate();
void clear();
GLint xsize, ysize, csize;
GLenum type, format;
int notowned;
void copy2Image(imageStruct *to) const;
void copy2ImageStruct(imageStruct *to) const; // copy the imageStruct (but not the actual data)
void refreshImage(imageStruct *to);
void swapRedBlue ();
void convertTo (imageStruct*to, GLenum dest_format=0);
void convertFrom(imageStruct*from, GLenum dest_format=0);
unsigned char *data;
private:
unsigned char *pdata;
size_t datasize;
public:
GLboolean upsidedown;
};
struct pixBlock {
pixBlock();
imageStruct image;
int newimage, newfilm;
};
class TexCoord {
public:
TexCoord() : s(0.f), t(0.f) {}
TexCoord(float s_, float t_) : s(s_), t(t_) {}
float s,t;
};
class GemState {
public:
int dirty, inDisplayList, lighting, smooth, texture;
pixBlock *image;
TexCoord *texCoords;
int numTexCoords, multiTexUnits;
float tickTime;
GLenum drawType;
int stackDepth[4];
int VertexDirty;
GLfloat *VertexArray; int VertexArraySize; int VertexArrayStride;
GLfloat *ColorArray; int HaveColorArray;
GLfloat *NormalArray; int HaveNormalArray;
GLfloat *TexCoordArray; int HaveTexCoordArray;
GemState();
~GemState();
float texCoordX(int num) const {if (texture && numTexCoords > num) return texCoords[num].s; else return 0.;}
float texCoordY(int num) const {if (texture && numTexCoords > num) return texCoords[num].t; else return 0.;}
void reset();
};
/* end of summary */
// in 0: gem
// in 1: grid
// out 0: gem
\class GridToPix : FObject {
P<BitPacking> bit_packing3;
P<BitPacking> bit_packing4;
pixBlock m_pixBlock;
\attr bool yflip;
\decl 0 gem_state (...);
void render(GemState *state) {state->image = &m_pixBlock;}
void startRendering () {m_pixBlock.newimage = 1;}
GridToPix (BFObject *bself, MESSAGE) : FObject(bself,MESSAGE2) {
yflip = false;
imageStruct &im = m_pixBlock.image = imageStruct();
im.ysize = 1;
im.xsize = 1;
im.csize = 4;
im.format = GL_RGBA;
im.type = GL_UNSIGNED_BYTE;
im.allocate();
*(int*)im.data = 0x0000ff;
uint32 mask[4] = {0x0000ff,0x00ff00,0xff0000,0x000000};
bit_packing3 = new BitPacking(is_le(),4,3,mask);
bit_packing4 = new BitPacking(is_le(),4,4,mask);
}
~GridToPix () {}
\grin 1 int
};
\def 0 gem_state (...) {
if (argc==2) render((GemState *)(void *)argv[1]); else startRendering();
outlet_anything(bself->te_outlet,gensym("gem_state"),argc,argv);
}
GRID_INLET(1) {
if (in->dim->n != 3) RAISE("expecting 3 dimensions: rows,columns,channels");
int c = in->dim->get(2);
if (c!=3 && c!=4) RAISE("expecting 3 or 4 channels (got %d)",in->dim->get(2));
in->set_chunk(1);
imageStruct &im = m_pixBlock.image;
im.clear();
im.ysize = in->dim->get(0);
im.xsize = in->dim->get(1);
im.type = GL_UNSIGNED_BYTE;
switch (in->dim->get(2)) {
case 1: im.csize = 1; im.format = GL_LUMINANCE; break;
case 3: im.csize = 4; im.format = GL_RGBA; break;
case 4: im.csize = 4; im.format = GL_RGBA; break;
default: RAISE("you shouldn't see this error message.");
}
im.allocate();
} GRID_FLOW {
uint8 *buf = (uint8 *)m_pixBlock.image.data;
/*!@#$ it would be nice to skip the bitpacking when we can */
long sxc = in->dim->prod(1);
long sx = in->dim->v[1];
long sy = in->dim->v[0];
BitPacking *bp = in->dim->get(2)==3 ? bit_packing3 : bit_packing4;
imageStruct &im = m_pixBlock.image;
if (yflip) {for (long y= dex/sxc; n; data+=sxc, n-=sxc, y++) bp->pack(sx,data,buf+y*sx*im.csize);}
else {for (long y=sy-1-dex/sxc; n; data+=sxc, n-=sxc, y--) bp->pack(sx,data,buf+y*sx*im.csize);}
} GRID_END
\end class {install("#to_pix",2,1); add_creator("#export_pix");}
//------------------------------------------------------------------------
\class GridFromPix : FObject {
P<BitPacking> bit_packing;
\attr bool yflip;
\attr NumberTypeE cast;
int channels;
GridFromPix () : FObject(0,0,0,0) {RAISE("don't call this. this exists only to make GEM happy.");}
GridFromPix (BFObject *bself, MESSAGE) : FObject(bself,MESSAGE2) {
uint32 mask[4] = {0x0000ff,0x00ff00,0xff0000,0x000000};
bit_packing = new BitPacking(is_le(),4,3,mask);
yflip = false;
cast = int32_e;
channels = 3;
}
virtual ~GridFromPix () {}
\decl 0 gem_state (...);
\decl 0 colorspace (t_symbol *s);
void render(GemState *state) {
if (!state->image) {::post("gemstate has no pix"); return;}
imageStruct &im = state->image->image;
if (im.format != GL_RGBA ) {::post("can't produce grid from pix format %d",im.format); return;}
if (im.type != GL_UNSIGNED_BYTE) {::post("can't produce grid from pix type %d", im.type ); return;}
int32 v[] = { im.ysize, im.xsize, channels };
GridOutlet out(this,0,new Dim(3,v),cast);
long sxc = im.xsize*channels;
long sy = v[0];
if (channels==3) {
#define FOO(T) {T buf[sxc]; \
for (int y=0; y<v[0]; y++) { \
uint8 *data = (uint8 *)im.data+im.xsize*im.csize*(yflip?y:sy-1-y); \
bit_packing->unpack(im.xsize,data,buf); out.send(sxc,buf);}}
TYPESWITCH(cast,FOO,)
#undef FOO
} else {
for (int y=0; y<v[0]; y++) out.send(sxc,(uint8 *)im.data+sxc*(yflip?y:sy-1-y));
}
}
};
\def 0 colorspace (t_symbol *s) {
if (s==gensym("rgb" )) channels=3; else
if (s==gensym("rgba")) channels=4; else
RAISE("unknown colorspace '%s'",s->s_name);
}
\def 0 gem_state (...) {if (argc==2) render((GemState *)(void *)argv[1]);}
\end class {install("#from_pix",2,1); add_creator("#import_pix");}
//------------------------------------------------------------------------
void startup_gem () {
\startall
}
/*
virtual void processRGBAImage(imageStruct &image) {}
virtual void processRGBImage (imageStruct &image) {}
virtual void processGrayImage(imageStruct &image) {}
virtual void processYUVImage (imageStruct &image) {}
*/
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