[PD-cvs] externals/gem2pdp help-pix_2pdp.pd, NONE, 1.1 pix_2pdp.cpp, NONE, 1.1 pix_2pdp.h, NONE, 1.1

Fri Jun 17 15:45:24 CEST 2005

Update of /cvsroot/pure-data/externals/gem2pdp
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv5514

Added Files:
	help-pix_2pdp.pd pix_2pdp.cpp pix_2pdp.h 
Log Message:
added pix_2pdp


--- NEW FILE: pix_2pdp.cpp ---
/*
 *  pix_2pdp : pix to pdp bridge
 *
 *  Capture the contents of the Gem pix and transform it to a PDP Packet whenever a bang is received
 *
 *  Based on code of gem2pdp by Yves Degoyon
 *  Many thanks to IOhannes M Zmölnig
 *
 *  Copyright (c) 2005 Georg Holzmann <grh at mur.at>
 *
 */

#include "pix_2pdp.h"
#include "yuv.h"

CPPEXTERN_NEW(pix_2pdp)

pix_2pdp::pix_2pdp(void)
{
  gem_image = NULL;
  m_pdpoutlet = outlet_new(this->x_obj, &s_anything);
}

pix_2pdp::~pix_2pdp()
{
  gem_image = NULL;
  gem_xsize = 0;
  gem_ysize = 0;
  gem_csize = 0;
}

// Image processing
void pix_2pdp::processImage(imageStruct &image)
{
  gem_image = image.data;
  gem_xsize = image.xsize;
  gem_ysize = image.ysize;
  gem_csize = image.csize;
  gem_format = image.format;
}

// pdp processing
void pix_2pdp::bangMess()
{
  t_int psize, px, py;
  short int *pY, *pU, *pV;
  unsigned char r,g,b;
  t_int helper;

  if(gem_image)
  {
    if(gem_format == GL_RGBA)
    {
      // make pdp packet
      psize = gem_xsize * gem_ysize;
      m_packet0 = pdp_packet_new_image_YCrCb( gem_xsize, gem_ysize);
      m_header = pdp_packet_header(m_packet0);
      m_data = (short int *)pdp_packet_data(m_packet0);

      pY = m_data;
      pV = m_data+psize;
      pU = m_data+psize+(psize>>2);
  
      for ( py=0; py<gem_ysize; py++)
      {
        for ( px=0; px<gem_xsize; px++)
        {
          // the way to access the pixels: (C=chRed, chBlue, ...)
          // image[Y * xsize * csize + X * csize + C]
          helper = py*gem_xsize*gem_csize + px*gem_csize;
          r=gem_image[helper+chRed];
          g=gem_image[helper+chGreen];
          b=gem_image[helper+chBlue];
          
          *(pY) = yuv_RGBtoY( (r<<16) +  (g<<8) +  b ) << 7;
          *(pV) = ( yuv_RGBtoV( (r<<16) +  (g<<8) +  b ) - 128 ) << 8;
          *(pU) = ( yuv_RGBtoU( (r<<16) +  (g<<8) +  b ) - 128 ) << 8;
          pY++;
          if ( (px%2==0) && (py%2==0) )
          {
            pV++; pU++;
          }
        }
      }

      pdp_packet_pass_if_valid(m_pdpoutlet, &m_packet0);

    }
    else
    {
      post( "pix_2pdp: Sorry, Gem-input RGB only for now!" );
    }
  }
}

void pix_2pdp::obj_setupCallback(t_class *classPtr)
{
  post( "pix_2pdp : a bridge between a Gem pix and PDP/PiDiP, Georg Holzmann 2005 <grh at mur.at>" );
  class_addmethod(classPtr, (t_method)&pix_2pdp::bangMessCallback,
    	    gensym("bang"), A_NULL);
}

void pix_2pdp::bangMessCallback(void *data)
{
  GetMyClass(data)->bangMess();
}

--- NEW FILE: help-pix_2pdp.pd ---
#N canvas 140 53 889 703 10;
#X obj 92 298 gemwin;
#X obj 338 264 gemhead;
#X obj 151 557 pix_texture;
#X obj 151 589 rectangle 4 4;
#X obj 501 531 pdp_xv;
#X msg 546 478 create;
#X msg 546 502 destroy;
#X obj 338 398 pix_2pdp;
#X obj 338 341 t a b;
#X obj 338 307 pix_film;
#X floatatom 405 293 5 0 1000 0 - - -;
#X msg 405 237 set open \$1;
#X text 446 293 <- frame;
#X obj 405 214 openpanel;
#X obj 405 194 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
-1;
#X msg 405 262 open /home/Georg/pd-cvs/gem/Gem/examples/data/homer.avi
;
#X msg 92 251 create \, 1;
#X msg 104 273 0 \, destroy;
#X text 90 229 Gem Control:;
#X text 313 223 Gem input:;
#X text 385 341 <- so you can trigger pdp automatically each frame
;
#X text 401 403 pdp outlet;
#X text 261 403 Gem outlet;
#X obj 151 528 spigot;
#X obj 188 508 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0
1;
#X text 210 514 chain to save CPU;
#X obj 368 369 spigot;
#X obj 419 370 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0
1;
#X text 441 370 <- turn on/off pdp processing;
#X text 210 499 cut Gem render-;
#X obj 500 578 pdp_rec~;
#X text 498 598 (record a gem-pix !!!);
#X text 45 321 (Gem rendering must be on \,;
#X text 47 335 but you can cut the Gem;
#X text 48 348 render-chain after pix_2pdp;
#X text 46 362 and hide the Gem-window;
#X text 46 376 to save CPU !);
#X text 264 667 =%)!(%= (c) Georg Holzmann <grh at mur.at> \, 2005 =%)!(%=
;
#X text 27 79 pix_2pdp captures the contents of a Gem pix and transforms
it to a PDP packet with almost no cpu power. So it's possible to convert
from Gem to PDP to Gem to PDP to ... if you use the Gem pix objects!
;
#X text 490 77 So what can you do with it?;
#X text 503 96 - use pix_video/pix_2pdp for firewire input in PDP;
#X text 503 111 - use pix_2pdp/pdp_rec~ to record Gem pixes;
#X text 503 126 - maybe switch between Gem and PDP all the time;
#X text 503 141 - ...;
#X text 395 25 pix_2pdp;
#X connect 1 0 9 0;
#X connect 2 0 3 0;
#X connect 5 0 4 0;
#X connect 6 0 4 0;
#X connect 7 0 23 0;
#X connect 7 1 4 0;
#X connect 7 1 30 0;
#X connect 8 0 7 0;
#X connect 8 1 26 0;
#X connect 9 0 8 0;
#X connect 10 0 9 1;
#X connect 11 0 15 0;
#X connect 13 0 11 0;
#X connect 14 0 13 0;
#X connect 15 0 9 0;
#X connect 16 0 0 0;
#X connect 17 0 0 0;
#X connect 23 0 2 0;
#X connect 24 0 23 1;
#X connect 26 0 7 0;
#X connect 27 0 26 1;

--- NEW FILE: pix_2pdp.h ---
/*
 *  pix_2pdp : pix to pdp bridge
 *
 *  Capture the contents of the Gem pix and transform it to a PDP Packet whenever a bang is received
 *
 *  Based on code of gem2pdp by Yves Degoyon
 *  Many thanks to IOhannes M Zmölnig
 *
 *  Copyright (c) 2005 Georg Holzmann <grh at mur.at>
 *
 */

#ifndef INCLUDE_PIX2PDP_H_
#define INCLUDE_PIX2PDP_H_

#include "Base/GemPixObj.h"
#include "pdp-light.h"

class GEM_EXTERN pix_2pdp : public GemPixObj
{
  CPPEXTERN_HEADER(pix_2pdp, GemPixObj)

  public:
    
    // Constructor
    pix_2pdp(void);
    	
  protected:
    
    // Destructor
    virtual ~pix_2pdp(void);
    
    // Image processing
    virtual void 	processImage(imageStruct &image);
    
    // pdp processing
    virtual void bangMess(void);
    
    // the pixBlock with the current image
    unsigned char *gem_image;
    int gem_xsize;
    int gem_ysize;
    int gem_csize;
    int gem_format;
    
    // pdp data
    t_outlet *m_pdpoutlet;
    int m_packet0;
    t_pdp *m_header;
    short int *m_data;
    	
 private:
   static void bangMessCallback(void *data);
};

#endif