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image.c

/*  image.c        
 * 
 * $Id: image.c,v 1.28 2006/01/09 02:23:04 sirdude Exp $
 *
 * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
 *
 * 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. The Blender
 * Foundation also sells licenses for use in proprietary software under
 * the Blender License.  See http://www.blender.org/BL/ for information
 * about this.
 *
 * 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.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL/BL DUAL LICENSE BLOCK *****
 */

#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <math.h>
#ifndef WIN32 
#include <unistd.h>
#else
#include <io.h>
#endif

#include <time.h>

#include "MEM_guardedalloc.h"

#include "IMB_imbuf_types.h"
#include "IMB_imbuf.h"

#include "DNA_image_types.h"
#include "DNA_texture_types.h"
#include "DNA_packedFile_types.h"
#include "DNA_userdef_types.h"

#include "BLI_blenlib.h"
#include "BLI_arithb.h"

#include "BKE_bmfont.h"
#include "BKE_packedFile.h"
#include "BKE_library.h"
#include "BKE_global.h"
#include "BKE_main.h"
#include "BKE_image.h"
#include "BKE_scene.h"
#include "BKE_texture.h"
#include "BKE_utildefines.h"

#include "PIL_time.h"

/* bad level; call to free_realtime_image */
#include "BKE_bad_level_calls.h"    

void free_image_buffers(Image *ima)
{
      int a;

      if(ima->ibuf) {
            if (ima->ibuf->userdata) {
                  MEM_freeN(ima->ibuf->userdata);
                  ima->ibuf->userdata = 0;
            }
            IMB_freeImBuf(ima->ibuf);
            ima->ibuf= 0;
      }
      if(ima->anim) IMB_free_anim(ima->anim);
      ima->anim= 0;
      
      for(a=0; a<BLI_ARRAY_NELEMS(ima->mipmap); a++) {
            if(ima->mipmap[a]) IMB_freeImBuf(ima->mipmap[a]);
            ima->mipmap[a]= 0;
      }
      
      free_realtime_image(ima);
}


void free_image(Image *ima)
{

      free_image_buffers(ima);
      if (ima->packedfile) {
            freePackedFile(ima->packedfile);
            ima->packedfile = NULL;
      }
}


Image *add_image(char *name)
{
      Image *ima;
      int file, len;
      char *libname, str[256], strtest[256];
      
      strcpy(str, name);
      BLI_convertstringcode(str, G.sce, G.scene->r.cfra);
      
      file= open(str, O_BINARY|O_RDONLY);
      if(file== -1) return 0;
      close(file);
      
      /* first search an identical image */
      ima= G.main->image.first;
      while(ima) {
            strcpy(strtest, ima->name);
            BLI_convertstringcode(strtest, G.sce, G.scene->r.cfra);
            if( strcmp(strtest, str)==0 ) {
                  if(ima->anim==0 || ima->id.us==0) {
                        strcpy(ima->name, name);      /* for stringcode */
                        ima->id.us++;
                        ima->ok= 1;
                        return ima;
                  }
            }
            ima= ima->id.next;
      }

      len= strlen(name);
      
      while (len > 0 && name[len - 1] != '/' && name[len - 1] != '\\') len--;
      libname= name+len;
      
      ima= alloc_libblock(&G.main->image, ID_IM, libname);
      strcpy(ima->name, name);
      ima->ok= 1;
      
      ima->xrep= ima->yrep= 1;
      
      return ima;
}

Image *new_image(int width, int height, char *name, short uvtestgrid)
{
      Image *ima;
                  
      ima = alloc_libblock(&G.main->image, ID_IM, name);

      if (ima)
      {
            ImBuf *ibuf;
            unsigned char *rect;
            int x, y;
            float h=0.0, hoffs=0.0, s=0.9, v=0.6, r, g, b;

            strcpy(ima->name, "Untitled");

            ibuf= IMB_allocImBuf(width, height, 24, IB_rect, 0);
            strcpy(ibuf->name, "Untitled");
            ima->ibuf= ibuf;

            rect= (unsigned char*)ibuf->rect;
            
            if (uvtestgrid) {
                  for(y=0; y<ibuf->y; y++) {
                        if (y % 20 == 0) hoffs += 0.125;
                        if (y % 160 == 0) hoffs = 0.0;
                        
                        for(x=0; x<ibuf->x; x++, rect+=4) {
                              if (x % 20 == 0) h += 0.125;
                              if (x % 160 == 0) h = 0.0;
                                                
                              hsv_to_rgb(fabs(h-hoffs), s, v, &r, &g, &b);
                              
                              rect[0]= (char)(r * 255.0);
                              rect[1]= (char)(g * 255.0);
                              rect[2]= (char)(b * 255.0);
                              rect[3]= 255;
                        }
                  }
            } else {    /* blank image */
                  for(y=0; y<ibuf->y; y++) {
                        for(x=0; x<ibuf->x; x++, rect+=4) {
                              rect[0]= rect[1]= rect[2]= 0;
                              rect[3]= 255;
                        }
                  }
            }

            ima->ok= 1;
      }

      return ima;
}

void tag_image_time(Image *ima)
{
      if (ima)
            ima->lastused = (int)PIL_check_seconds_timer();
}

void tag_all_images_time() {
      Image *ima;
      int ctime = (int)PIL_check_seconds_timer();

      ima= G.main->image.first;
      while(ima) {
            if(ima->bindcode || ima->repbind || ima->ibuf) {
                  ima->lastused = ctime;
            }
      }
}

void free_old_images()
{
      Image *ima;
      static int lasttime = 0;
      int ctime = (int)PIL_check_seconds_timer();
      
      /* 
         Run garbage collector once for every collecting period of time 
         if textimeout is 0, that's the option to NOT run the collector
      */
      if (U.textimeout == 0 || ctime % U.texcollectrate || ctime == lasttime)
            return;

      lasttime = ctime;

      ima= G.main->image.first;
      while(ima) {
            if((ima->flag & IMA_NOCOLLECT)==0 && ctime - ima->lastused > U.textimeout) {
                  /*
                     If it's in GL memory, deallocate and set time tag to current time
                     This gives textures a "second chance" to be used before dying.
                  */
                  if(ima->bindcode || ima->repbind) {
                        free_realtime_image(ima);
                        ima->lastused = ctime;
                  }
                  /* Otherwise, just kill the buffers */
                  else if (ima->ibuf) {
                        free_image_buffers(ima);
                  }
            }
            ima = ima->id.next;
      }
}

void free_unused_animimages()
{
      Image *ima, *nima;

      ima= G.main->image.first;
      while(ima) {
            nima= ima->id.next;
            if(ima->id.us==0) {
                  if(ima->flag & IMA_FROMANIM) free_libblock(&G.main->image, ima);
            }
            ima= nima;
      }
}


/* *********** READ AND WRITE ************** */

void makepicstring(char *string, int frame)
{
      short i,len;
      char num[10], *extension;

      if (string==0) return;

      extension= "";

      strcpy(string, G.scene->r.pic);
      BLI_convertstringcode(string, G.sce, G.scene->r.cfra);

      len= strlen(string);
                  
      /* can also: sprintf(num, "%04d", frame); */

      i=4-sprintf(num,"%d",frame);
      for(;i>0;i--){
            string[len]='0';
            len++;
      }
      string[len]=0;
      strcat(string,num);

      if(G.scene->r.scemode & R_EXTENSION) 
            addImageExtension(string);
            
}

void addImageExtension(char *string)
{
      char *extension="";

      if(G.scene->r.imtype== R_IRIS) {
            if(!BLI_testextensie(string, ".rgb"))
                  extension= ".rgb";
      }
      else if(G.scene->r.imtype==R_IRIZ) {
            if(!BLI_testextensie(string, ".rgb"))
                  extension= ".rgb";
      }
      else if(G.scene->r.imtype==R_RADHDR) {
            if(!BLI_testextensie(string, ".hdr"))
                  extension= ".hdr";
      }
      else if(G.scene->r.imtype==R_PNG) {
            if(!BLI_testextensie(string, ".png"))
                  extension= ".png";
      }
      else if(G.scene->r.imtype==R_TARGA) {
            if(!BLI_testextensie(string, ".tga"))
                  extension= ".tga";
      }
      else if(G.scene->r.imtype==R_RAWTGA) {
            if(!BLI_testextensie(string, ".tga"))
                  extension= ".tga";
      }
      else if(G.scene->r.imtype==R_JPEG90) {
            if(!BLI_testextensie(string, ".jpg"))
                  extension= ".jpg";
      }
      else if(G.scene->r.imtype==R_BMP) {
            if(!BLI_testextensie(string, ".bmp"))
                  extension= ".bmp";
      }
      else if(G.have_libtiff && (G.scene->r.imtype==R_TIFF)) {
            if(!BLI_testextensie(string, ".tif"))
                  extension= ".tif";
      }
      
      strcat(string, extension);
}


/* ******** IMAGE WRAPPING INIT ************* */

/* used by sequencer, texture */
void converttopremul(struct ImBuf *ibuf)
{
      int x, y, val;
      char *cp;
      
      if(ibuf==0) return;
      if(ibuf->depth==24) {   /* put alpha at 255 */

            cp= (char *)(ibuf->rect);
            for(y=0; y<ibuf->y; y++) {
                  for(x=0; x<ibuf->x; x++, cp+=4) {
                        cp[3]= 255;
                  }
            }
            return;
      }
      
      cp= (char *)(ibuf->rect);
      for(y=0; y<ibuf->y; y++) {
            for(x=0; x<ibuf->x; x++, cp+=4) {
                  if(cp[3]==0) {
                        cp[0]= cp[1]= cp[2]= 0;
                  }
                  else if(cp[3]!=255) {
                        val= cp[3];
                        cp[0]= (cp[0]*val)>>8;
                        cp[1]= (cp[1]*val)>>8;
                        cp[2]= (cp[2]*val)>>8;
                  }
            }
      }
}

/* used by sequencer, texture */
struct anim *openanim(char * name, int flags)
{
      struct anim * anim;
      struct ImBuf * ibuf;
      
      anim = IMB_open_anim(name, flags);
      if (anim == 0) return(0);

      
      ibuf = IMB_anim_absolute(anim, 0);
      if (ibuf == 0) {
            printf("anim_absolute 0 failed\n");
            IMB_free_anim(anim);
            return(0);
      }
      IMB_freeImBuf(ibuf);
      
      return(anim);
}


/*
load_image handles reading the image from disk or from the packedfile.
*/

void load_image(Image * ima, int flags, char *relabase, int framenum)
{
      char name[FILE_MAXDIR + FILE_MAXFILE];

      if (ima->ibuf == NULL) {

            // is there a PackedFile with this image ?;
            if (ima->packedfile) {
                  ima->ibuf = IMB_ibImageFromMemory((int *) ima->packedfile->data, ima->packedfile->size, flags);
            } else {
                  strcpy(name, ima->name);
                  BLI_convertstringcode(name, relabase, framenum);

                  ima->ibuf = IMB_loadiffname(name , flags);
            }
            // check if the image is a font image...
            // printf("Checking for font\n");

            if (ima->ibuf) {
                  detectBitmapFont(ima->ibuf);
            }
      }
}


static void de_interlace_ng(struct ImBuf *ibuf) /* neogeo fields */
{
      struct ImBuf * tbuf1, * tbuf2;
      
      if (ibuf == 0) return;
      if (ibuf->flags & IB_fields) return;
      ibuf->flags |= IB_fields;
      
      if (ibuf->rect) {
            /* make copies */
            tbuf1 = IMB_allocImBuf(ibuf->x, (short)(ibuf->y >> 1), (unsigned char)32, (int)IB_rect, (unsigned char)0);
            tbuf2 = IMB_allocImBuf(ibuf->x, (short)(ibuf->y >> 1), (unsigned char)32, (int)IB_rect, (unsigned char)0);
            
            ibuf->x *= 2;
            /* These rectop calls are broken!!! I added a trailing 0 arg... */
            IMB_rectop(tbuf1, ibuf, 0, 0, 0, 0, 32767, 32767, IMB_rectcpy, 0);
            IMB_rectop(tbuf2, ibuf, 0, 0, tbuf2->x, 0, 32767, 32767, IMB_rectcpy, 0);
            
            ibuf->x /= 2;
            IMB_rectop(ibuf, tbuf1, 0, 0, 0, 0, 32767, 32767, IMB_rectcpy, 0);
            IMB_rectop(ibuf, tbuf2, 0, tbuf2->y, 0, 0, 32767, 32767, IMB_rectcpy, 0);
            
            IMB_freeImBuf(tbuf1);
            IMB_freeImBuf(tbuf2);
      }
      ibuf->y /= 2;
}

static void de_interlace_st(struct ImBuf *ibuf) /* standard fields */
{
      struct ImBuf * tbuf1, * tbuf2;
      
      if (ibuf == 0) return;
      if (ibuf->flags & IB_fields) return;
      ibuf->flags |= IB_fields;
      
      if (ibuf->rect) {
            /* make copies */
            tbuf1 = IMB_allocImBuf(ibuf->x, (short)(ibuf->y >> 1), (unsigned char)32, IB_rect, 0);
            tbuf2 = IMB_allocImBuf(ibuf->x, (short)(ibuf->y >> 1), (unsigned char)32, IB_rect, 0);
            
            ibuf->x *= 2;
            /* These are brolenm as well... */
            IMB_rectop(tbuf1, ibuf, 0, 0, 0, 0, 32767, 32767, IMB_rectcpy, 0);
            IMB_rectop(tbuf2, ibuf, 0, 0, tbuf2->x, 0, 32767, 32767, IMB_rectcpy, 0);
            
            ibuf->x /= 2;
            IMB_rectop(ibuf, tbuf2, 0, 0, 0, 0, 32767, 32767, IMB_rectcpy, 0);
            IMB_rectop(ibuf, tbuf1, 0, tbuf2->y, 0, 0, 32767, 32767, IMB_rectcpy, 0);
            
            IMB_freeImBuf(tbuf1);
            IMB_freeImBuf(tbuf2);
      }
      ibuf->y /= 2;
}


void ima_ibuf_is_nul(Tex *tex, Image *ima)
{
      void (*de_interlacefunc)(struct ImBuf *ibuf);
      int a, fra, dur;
      char str[FILE_MAXDIR+FILE_MAXFILE], *cp;
      
      if(ima==0) return;
      
      strcpy(str, ima->name);
      BLI_convertstringcode(str, G.sce, G.scene->r.cfra);
      
      if(tex->imaflag & TEX_STD_FIELD) de_interlacefunc= de_interlace_st;
      else de_interlacefunc= de_interlace_ng;
      
      if(tex->imaflag & TEX_ANIM5) {
            
            if(ima->anim==0) ima->anim = openanim(str, IB_cmap | IB_rect);
            if (ima->anim) {
                  dur = IMB_anim_get_duration(ima->anim);
                  
                  ima->lastquality= R.osa;
                  fra= ima->lastframe-1;
                  
                  if(fra<0) fra = 0;
                  if(fra>(dur-1)) fra= dur-1;
                  ima->ibuf = IMB_anim_absolute(ima->anim, fra);
                  
                  /* patch for textbutton with name ima (B_NAMEIMA) */
                  if(ima->ibuf) {
                        strcpy(ima->ibuf->name, ima->name);
                        if (tex->imaflag & TEX_FIELDS) de_interlacefunc(ima->ibuf);
                  }
            }
            else printf("Not an anim");
            
      } else {
            // create a packedfile for this image when autopack is on
            // for performance (IMB_loadiffname uses mmap) we don't do this by default
            if ((ima->packedfile == NULL) && (G.fileflags & G_AUTOPACK)) {
                  ima->packedfile = newPackedFile(str);
            }
            
            load_image(ima, IB_rect, G.sce, G.scene->r.cfra);
            
            if (tex->imaflag & TEX_FIELDS) de_interlacefunc(ima->ibuf);
            
            ima->lastquality= R.osa;
      }
      
      if(ima->ibuf) {
            
            /* stringcodes also in ibuf. ibuf->name is used as 'undo' (buttons.c) */
            strcpy(ima->ibuf->name, ima->name);
            
            if(ima->ibuf->cmap) {
                  
                  if(tex->imaflag & TEX_ANIM5) {
                        
                        if(tex->imaflag & TEX_MORKPATCH) {
                              /**** PATCH TO SET COLOR 2 RIGHT (neogeo..) */
                              if(ima->ibuf->maxcol > 4) {
                                    cp= (char *)(ima->ibuf->cmap+2);
                                    cp[0]= 0x80;
                              }
                        }
                        
                        IMB_applycmap(ima->ibuf);
                        IMB_convert_rgba_to_abgr(ima->ibuf->x*ima->ibuf->y, ima->ibuf->rect);
                        
                  }
                  
                  converttopremul(ima->ibuf);
            }
            
            if(R.osa) {
                  
                  if(tex->imaflag & TEX_ANTISCALE) {
                        IMB_clever_double(ima->ibuf);
                        IMB_antialias(ima->ibuf);
                  }
                  else if(tex->imaflag & TEX_ANTIALI) IMB_antialias(ima->ibuf);
            }
      }
      
      if(ima->ibuf)
            ima->lastused = clock() / CLOCKS_PER_SEC;
      else
            ima->ok= 0;
      
      for(a=0; a<BLI_ARRAY_NELEMS(ima->mipmap); a++) {
            if(ima->mipmap[a]) IMB_freeImBuf(ima->mipmap[a]);
            ima->mipmap[a]= 0;
      }

}




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