annotate saitools/napheader.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.
*/
/* napheader.c 
* ----------
*
* The .nap version of header.c
*
* M. Akeroyd. 10th June 1993.  Revised Winter 1994.
*
*/


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

void reset_header_bytes();


extern char progname[MAX_STRING_LENGTH];
extern char header[MAX_LINES_HEADER][MAX_LINE_LENGTH];

extern int verboseflag;
extern int header_lines;        /* number of lines in header */
extern int oppositearchflag;    /* ON if reading Sun on DEC, or DEC on Sun.*/

/* .nap parameters */

extern int no_frames;
extern int frameheight;             /* number of channels */
extern int framewidth_samples;      /* = 1 */
extern int frameshift_samples;      /* = 1 */ 
extern int width_win;               /* pixels */
extern int height_win;              /* pixels */
extern long samplerate;              /* samples per sec */
extern int mincf;                   /* Hz */
extern int maxcf;                   /* Hz */




int readheader_nap(FILE *inputfp) 
{ 
  /* Version of 10vi1993 
   */
 
  char *p_equal=" ";       /* pointer to where the '=' is in the headerline */
  char tempstring[MAX_STRING_LENGTH];        

  int bytes_required = 0;  /* no. of bytes in header, as in "header_bytes=...
			    * This is RETURNed */
  int bytes_loaded = 0;    /* number actually loaded */
  int counter;



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

  if(strspn(header[0], "header_bytes") == 0) {
    fprintf(stderr, "%s: is the input a AIM file?\n", progname);
    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 */

  while (strncmp(fgets(header[++header_lines], MAX_LINE_LENGTH, inputfp),
		 "Version=", 8)  != 0) {
    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], "frames=", 7) == 0 ) {
      p_equal = strchr(header[header_lines], '=');
      no_frames = 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], "samplerate=", 11) == 0 ) {
      /* For some unknown reason, the samplerate has a "." at the
       * end of it. 
       * Well, sometimes.
       */
      strncpy(tempstring, header[header_lines], 
	      (strlen(header[header_lines])-0));
      p_equal = strchr(tempstring, '=');
      samplerate = atol(++p_equal); } 

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

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

  }

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

/* Test for .nap: both frameshift_samples and framewidth_samples == 1 */
  if ((framewidth_samples != 1) || (frameshift_samples != 1 )) {
    fprintf(stderr, " %s : is the input a .nap file?\n", progname);
    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++) 
    fgetc(inputfp);

  /* read some more bytes, till we are at the end of the header */
  for (counter = 1; counter <= (bytes_required - bytes_loaded); counter++) 
    fgetc(inputfp);

/* This next bit copied off header.c */

/* MAA: Winter 1994: Changed this bit to the "-oparch" option */
  if (oppositearchflag == ON) 
    fgetc(inputfp);           /* THIS ONE !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!*/

  return bytes_required; 
}







int  fakeheader_sai()
{
  /* What this code does:
   * 
   * It builds a "fake" .sai header, so that a .sai can be output
   * even though a .nap is input. 
   *
   * The following bits are copied off the .nap header:
   *    samplerate
   *    width_win
   *    height_win
   *    frameheight
   *    frameshift (hopefully this is irrelevant)
   *    mincf
   *    maxcf
   *
   * The following get set anyway, but are reset to the correct values by
   * changeheader():
   *    framewidth
   *    framebytes
   *    header_bytes
   *    frames
   *    pwidth
   *    nwidth
   *
   * EVERYTHING else is completely fake. The numbers seem to be 
   * reasonable: for a histogram graph .sai, though, none of them matter.
   * (Well, I hope not).
   *
   * The date is made up as well.
   */

  int nwidth = -5;    
  int pwidth = 20;
  int bytes = 1000;
  int framebytes=150000;
  
  
/*  strcpy(header[0],  "header_bytes=\n"); */
  strcpy(header[1],  "llim_sas=1.5c\n");
  strcpy(header[2],  "ulim_sas=24ms\n");
  strcpy(header[3],  "decay_ai=15ms\n");
  strcpy(header[4],  "ltrate_ai=150Hz\n");
  strcpy(header[5],  "utrate_ai=20Hz\n");
  strcpy(header[6],  "ttdecay_ai=10\n");
  strcpy(header[7],  "napdecay_ai=1.25\n");
  strcpy(header[8],  "orig_spd=3.072\n");
  strcpy(header[9],  "zeroline_spd=off\n"); 
/*  strcpy(header[10], "nwidth_aid=-5\n"); */    /* see below */
/*  strcpy(header[11], "pwidth_aid=20\n"); */    /* see below */
  strcpy(header[12], "frstep_aid=10\n");
  strcpy(header[13], "frstep_epn=off\n");
  strcpy(header[14], "downsample=off\n");
  strcpy(header[15], "tup_idt=8ms\n");
  strcpy(header[16], "tdown_idt=1\n");
  strcpy(header[17], "loss_idt=1\n");
  strcpy(header[18], "vloss_idt=0\n");
  strcpy(header[19], "igain_idt=1\n");
  strcpy(header[20], "stages_idt=off\n");
  strcpy(header[21], "hard_limit=off\n");
  strcpy(header[22], "meddis=off\n");
  strcpy(header[23], "times_at=2\n");
  strcpy(header[24], "reclimit_at=5\n");
  strcpy(header[25], "frecovery_at=20.\n");
  strcpy(header[26], "propt2t1_at=0.5\n");
  strcpy(header[27], "t2recovery_at=0.2\n");
  strcpy(header[28], "t1recovery_at=0.6\n");
  strcpy(header[29], "trise_at=10000.\n");
  strcpy(header[30], "scale_at=100\n");
  strcpy(header[31], "ltdown_lpf=1\n");
  strcpy(header[32], "lloss_lpf=1\n");
  strcpy(header[33], "lvloss_lpf=0\n");
  strcpy(header[34], "ligain_lpf=1\n");
  strcpy(header[35], "compress=on\n");
  strcpy(header[36], "rectify=off\n");
  strcpy(header[37], "order_gtf=4\n");
  strcpy(header[38], "phase_gtf=0\n");
  strcpy(header[39], "gain_gtf=4.\n");
  strcpy(header[40], "float_gtf=off\n");
  strcpy(header[41], "audiogram_afb=on\n");
  strcpy(header[42], "quality_afb=9.265\n");
  strcpy(header[43], "bwmin_afb=24.7Hz\n");
  strcpy(header[44], "interp_afb=off\n");
  strcpy(header[45], "dencf_afb=off\n");
/*  strcpy(header[46], "maxcf_afb=6000Hz\n"); */   /* see below */
/*  strcpy(header[47], "mincf_afb=100Hz\n"); */    /* see below */
/*  strcpy(header[48], "channels_afb=100\n"); */   /* see below */
  strcpy(header[49], "bits_wave=12\n");
  strcpy(header[50], "swap_wave=on\n");
/*  strcpy(header[51], "samplerate=20000\n");  */  /* see below */
/*  strcpy(header[52], "frames=10\n"); */          /* see below */
/*  strcpy(header[53], "frameshift=200\n"); */     /* see below */
/*  strcpy(header[54], "framewidth=500\n"); */     /* see below */
/*  strcpy(header[55], "frameheight=100\n"); */    /* see below */
/*  strcpy(header[56], "framebytes=100000\n"); */  /* see below */
  strcpy(header[57], "type=short\n");
  strcpy(header[58], "bytemax=255\n");
  strcpy(header[59], "header=on\n");
  strcpy(header[60], "animate_ctn=off\n");
  strcpy(header[61], "erase_ctn=on\n");
  strcpy(header[62], "downchannel=off\n");
  strcpy(header[63], "view=landscape\n");
  strcpy(header[64], "display=on\n");
/*  strcpy(header[65], "height_win=400\n"); */    /* see below */
/*  strcpy(header[66], "width_win=540\n"); */     /* see below */
  strcpy(header[67], "y0_win=center\n");
  strcpy(header[68], "x0_win=center\n");
  strcpy(header[69], "Version=\"AICAP Version R6.3    Mon Jan 00 00:00:00 1900\"\n");



  /* Fill in the values from .nap
   * All the ones with "/* ..." next to are set anyway; they are
   * overwritten with the REAL .sai values in changeheader
   */
  

  sprintf(header[0],  "header_bytes=0001000\n");
  sprintf(header[46], "maxcf_afb=%d\n", maxcf);
  sprintf(header[47], "mincf_afb=%d\n", mincf);
  sprintf(header[51], "samplerate=%d\n", samplerate);
  sprintf(header[52], "frames=%d\n", no_frames);              /* */
  sprintf(header[53], "frameshift=%d\n", frameshift_samples); 
  sprintf(header[54], "framewidth=%d\n", framewidth_samples); /* */
  sprintf(header[48], "channels_afb=%d\n", frameheight);
  sprintf(header[55], "frameheight=%d\n", frameheight);
  sprintf(header[56], "framebytes=%d\n", framebytes);         /* */
  sprintf(header[65], "height_win=%d\n", 400);
  sprintf(header[66], "width_win=%d\n", 540); 
  sprintf(header[10], "nwidth_aid=%d\n", nwidth);            /* */
  sprintf(header[11], "pwidth_aid=%d\n", pwidth);             /* */

  header_lines=69;
  reset_header_bytes();

  /* RETURN the number of lines */
  return 69;
}
  



/* The End ...............................................................*/
/*........................................................................*/