annotate xaim/cartoon.c @ 0:5242703e91d3 tip

Initial checkin for AIM92 aimR8.2 (last updated May 1997).

/*
    Copyright (c) Applied Psychology Unit, Medical Research Council. 1993
    ===========================================================================

    Permission to use, copy, modify, and distribute this software without fee 
    is hereby granted for research purposes, provided that this copyright 
    notice appears in all copies and in all supporting documentation, and that 
    the software is not redistributed for any fee (except for a nominal 
    shipping charge). Anyone wanting to incorporate all or part of this 
    software in a commercial product must obtain a license from the Medical 
    Research Council.

    The MRC makes no representations about the suitability of this 
    software for any purpose.  It is provided "as is" without express or 
    implied warranty.
 
    THE MRC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING 
    ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL 
    THE A.P.U. BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES 
    OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, 
    WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, 
    ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 
    SOFTWARE.
*/

/*
* cartoon.c 
* ----------
*
*
* M. Akeroyd. July 1993. version 1.10
* (ReadHeader is August 30, 1993)
*
* Revisions: MAA: Christmas 1993. 
*/


#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "xreview.h"



/* General Parameters */

extern char progname[MAX_STRING_LENGTH];
extern int verboseflag;

extern char *data_pointer;
extern long location[MAX_FRAMES];
extern int reviewimage_bitmap_pad;
extern int reviewimage_bytesperline;


/* .ctn parameters */

extern char header[MAX_LINES_HEADER][MAX_LINE_LENGTH];
extern int header_lines;        
extern int no_frames;
extern int depth;
extern long samplerate;
extern int frameheight;         
extern int framewidth_samples;  
extern int frameshift_samples;  
extern double frstep_aid;
extern double pwidth;
extern double nwidth;
extern int mincf;
extern int maxcf;       

/* X .... */

extern int width_ctn; 
extern int height_ctn;
extern int x_ctn;
extern int y_ctn;



/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/



int readheader(FILE *inputfp, char inputfn[]) 
{ 
  /* August 30, 1993 
   * Most of the effort went into getting it to load the exact number of
   * bytes, because the bitmap info follows on continously from the header.
   * This version adds-up the number of bytes it actually has loaded, and if
   * it needs anymore, gratutiously loads them.
   * It seems to work with:
   *  DECstation cartoon displayed on DECstation server
   *  DECstation     ...      ...     Sun         ...
   *  Sun   ...      ...      ...     DECstation  ...
   *  Sun   ...      ...      ...     Sun         ...		
   *  DECstation     ...      ...     Linux 386 PC server.
   */

  /* Assumed necessary conditions of a .ctn file:
   * first line says "header_bytes= ... "
   * last line says "Version= ..."
   */

  char tempstring[MAX_STRING_LENGTH];         
  char *p_equal=" ";       /* pointer to where the '=' is in the headerline */
  int bytes_required = 0;  /* num of bytes in header, as in "header_bytes=...
			    * This is RETURNed */
  int bytes_loaded = 0;    /* number actually loaded */
  int counter;
  int status;


  /* Get first line */
  header_lines = 0;
  fgets(header[0], MAX_LINE_LENGTH, inputfp);

  /* If the First Line ISN'T "header_bytes ...", add another ".ctn" to the end 
   * and try again. tempstring holds the original name, before ".ctn" got
   * added. 
   */

  strcpy(tempstring, inputfn);

  if(strspn(header[0], "header_bytes") == 0) {
    fclose(inputfp);
    strcat(inputfn, INPUT_EXT);
    inputfp = fopen(inputfn, "rb");
    if (inputfp == NULL) {  
      fprintf(stderr, "xreview : unable to open file %s\n", tempstring);
      exit(-1);}
    fgets(header[0], MAX_LINE_LENGTH, inputfp);
    if(strspn(header[0], "header_bytes") == 0) {
      fprintf(stderr, "xreview: is %s a .ctn file? \n", inputfn);
      exit(-1);}}

  /* Find out how many bytes there SHOULD be */
  p_equal = strchr(header[0], '=');
  bytes_required = atoi(++p_equal); 


/*----------------------------------------*/


  /* Loop on remaining lines, saving important information as required 
   * Last line has "Version" in it.
   */

  while (strncmp(fgets(header[++header_lines], MAX_LINE_LENGTH, inputfp),
		 "Version=", 8)  != 0) {

    if (strncmp(header[header_lines], "frames=", 7) == 0 ) {
      p_equal = strchr(header[header_lines], '=');
      no_frames = atoi(++p_equal); }

    if (strncmp(header[header_lines], "samplerate", 11) == 0 ) {
      /* For some unknown reason, the samplerate has a "." at the
       * end of it. Well, sometimes it does.
       */
      strncpy(tempstring, header[header_lines], 
	      (strlen(header[header_lines])-0));
      p_equal = strchr(tempstring, '=');
      samplerate = atol(++p_equal); } 

    if (strncmp(header[header_lines], "frameheight=", 12) == 0 ) {
      p_equal = strchr(header[header_lines], '=');
      frameheight = atoi(++p_equal); }

    if (strncmp(header[header_lines], "framewidth=", 11) == 0 ) {
      p_equal = strchr(header[header_lines], '=');
      framewidth_samples = atoi(++p_equal); }

    if (strncmp(header[header_lines], "frameshift=", 11) == 0 ) {
      p_equal = strchr(header[header_lines], '=');
      frameshift_samples = atoi(++p_equal); }

    if (strncmp(header[header_lines], "frstep_aid=", 11) == 0 ) {
      p_equal = strchr(header[header_lines], '=');
      frstep_aid = atof(++p_equal);}

    if (strncmp(header[header_lines], "pwidth_aid=", 11) == 0 ) {
      p_equal = strchr(header[header_lines], '=');
      pwidth = atof(++p_equal); }

    if (strncmp(header[header_lines], "nwidth_aid=", 11) == 0 ) {
      p_equal = strchr(header[header_lines], '=');
      nwidth = atof(++p_equal); }

    if (strncmp(header[header_lines], "mincf_afb=", 10) == 0 ) {
      p_equal = strchr(header[header_lines], '=');
      mincf = atoi(++p_equal); }

    if (strncmp(header[header_lines], "maxcf_afb=", 10) == 0 ) {
      p_equal = strchr(header[header_lines], '=');
      maxcf = atoi(++p_equal); }

    if (strncmp(header[header_lines], "width_win=", 10) == 0 ) {
      p_equal = strchr(header[header_lines], '=');
      width_ctn = atoi(++p_equal); }

    if (strncmp(header[header_lines], "height_win=", 11) == 0 ) {
      p_equal = strchr(header[header_lines], '=');
      height_ctn = atoi(++p_equal); }

    if (strncmp(header[header_lines], "x0_win=", 7) == 0 ) {
      if (strncmp(header[header_lines], "x0_win=center", 13) == 0 ) {
	/* -1 is used to mean 'center' */
	x_ctn = -1;}
      else {
	p_equal = strchr(header[header_lines], '=');
	x_ctn = atoi(++p_equal); } }

    if (strncmp(header[header_lines], "y0_win=", 7) == 0 ) {
      if (strncmp(header[header_lines], "y0_win=center", 13) == 0 ) {
	/* -1 is used to mean 'center' */
	y_ctn = -1;}
      else {
	p_equal = strchr(header[header_lines], '=');
	y_ctn = atoi(++p_equal); } }

  }

/*---------------------------------*/

  /* Some checks */

  if (width_ctn == 0) {
    if (verboseflag == ON)  fprintf(stderr, "\n");
    fprintf(stderr, "xreview : width of cartoon window = 0. Stopping. \n");
    exit(-1);}

  if (height_ctn == 0) {
    if (verboseflag == ON)  fprintf(stderr, "\n");
    fprintf(stderr, "xreview : height of cartoon window = 0. Stopping. \n");
    exit(-1);}

  if (no_frames == 0) {
    if (verboseflag == ON)  fprintf(stderr, "\n");
    fprintf(stderr, "xreview : total frames = 0. Stopping. \n");
    exit(-1);}

  if (frameheight == 0) {
    if (verboseflag == ON)  fprintf(stderr, "\n");
    fprintf(stderr, "xreview : frameheight of cartoon = 0. Stopping. \n");
    exit(-1);}

/*-----------------------------------------------*/

  /* how many bytes have we loaded ? */
  for (counter=0; counter<=header_lines; counter++) 
    bytes_loaded += strlen(header[counter]);
  
  /* read some more bytes, till we are at the end of the header */
  for (counter = 1; counter <= (bytes_required - bytes_loaded); counter++) {
    status = fgetc(inputfp);
    if (status == EOF) {
      if (verboseflag == ON)  fprintf(stderr, "\n");
      fprintf(stderr, "xreview : unable to finish loading of header. \n");
      exit(-1);}}

  return bytes_required; 
  }





/*------------------------------------------------------------------------*/
/*------------------------------------------------------------------------*/




FILE *open_file(char filefn[],  FILE *dir_default, int streamtype)
{
  /* Opens a file stream associated with filefn[].
   * If that's null, then the stream is a copy of the dir_default:
   *    stdin / stdout / stderr.
   * 'streamtype' is either READ (for "rb") or WRITE ("wb")
   * 
   * If it doesn't work, put ".ctn" on the end and try again.
   */

  FILE *filefp = NULL;

  if (strcmp(filefn, "") == 0) 
    filefp = dir_default;
  else {
    if (streamtype == READ) 
      filefp = fopen(filefn, "rb");
    else 
      filefp = fopen(filefn, "wb");}

  if (filefp == NULL) {  
    strcat(filefn, INPUT_EXT);
    if (streamtype == READ) 
      filefp = fopen(filefn, "rb");
    else 
      filefp = fopen(filefn, "wb");
    if (filefp == NULL) {  
      fprintf(stderr, "xreview : unable to open file %s\n", filefn);
      exit(-1);}
  }
  return filefp;
	
}




/*---------------------------------------------------------------------*/
/*---------------------------------------------------------------------*/





void close_files(FILE *fp)
{

  fclose(fp);
 
  if ( ferror(fp) != 0) {
    if (verboseflag == ON)  fprintf(stderr, "\n");
    fprintf(stderr, "xreview : error closing file.\n");
    exit(-1);}
}





/*---------------------------------------------------------------------*/
/*---------------------------------------------------------------------*/





void loaddata(FILE *inputfp)
{
  int required_bytes;
  int frame;
  long status;

/*-----------------------------*/  

  if  (verboseflag==ON) { 
    fprintf(stderr, " loading frame ");
    fflush(stderr);}
  
  required_bytes = (long) height_ctn*reviewimage_bytesperline*depth; 

  if (no_frames >= MAX_FRAMES) {
    if (verboseflag == ON)  fprintf(stderr, "\n");
    fprintf(stderr, "xreview : too many frames (%i) \n", no_frames);
    exit(-1);}

/*-----------------------------*/

  for (frame=1; frame <= no_frames; frame++) {

    if  (verboseflag==ON) { 
      fprintf(stderr, "%i ", frame);
      fflush(stderr);}

    location[frame] = (long) data_pointer;

    clearerr(inputfp);
    status = (long) fread (data_pointer, (size_t) 1, (size_t) required_bytes, inputfp);

    if ((status != required_bytes) && frame == 1){
      if (verboseflag == ON)  fprintf(stderr, "\n");
      fprintf(stderr, "xreview : error reading first frame: wanted %li bytes, got %li\n", required_bytes, status);
      exit(-1);}

    if ((status != required_bytes) && frame != 1){
      if (verboseflag == ON)  fprintf(stderr, "\n");
      fprintf(stderr, "xreview : frame %i: wanted %li bytes, got %li. Continuing with %i frames.\n", frame, required_bytes, status, frame-1);
      frame--;
      no_frames=frame;}

    if ((int) ferror(inputfp) != 0) {
      if (verboseflag == ON)  fprintf(stderr, "\n");
      fprintf(stderr, "xreview :  error reading frame %i\n", frame);
      exit(-1);}

    data_pointer = data_pointer + required_bytes;

  } /* frame */

/*-----------------------------*/  

  data_pointer = (char *) location[1];

}






/* The End */
/*---------------------------------------------------------------------*/
/*---------------------------------------------------------------------*/