root/platform/ixus90_sd790/main.c

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DEFINITIONS

This source file includes following definitions.
  1. startup
  2. get_effective_focal_length
  3. get_focal_length
  4. get_zoom_x
  5. get_vbatt_min
  6. get_vbatt_max

   1 #include "camera.h"
   2 #include "lolevel.h"
   3 #include "platform.h"
   4 #include "core.h"
   5 #include "keyboard.h"
   6 #include "stdlib.h"
   7 
   8 extern long link_bss_start;
   9 extern long link_bss_end;
  10 extern void boot();
  11 
  12 
  13 void startup()
  14 {
  15     long *bss = &link_bss_start;
  16 
  17     // sanity check
  18     if ((long)&link_bss_end > (MEMISOSTART + MEMISOSIZE)){
  19                 started();
  20                 shutdown();
  21     }
  22 
  23     // initialize .bss senment
  24     while (bss<&link_bss_end)
  25         *bss++ = 0;
  26 
  27     boot();
  28 }
  29 
  30 // Ixus 90 focal length range is 6.2 - 18.6 mm, 35-105 in 35-mm equivalent.
  31 // So, CF_EFL = 35/6.2*10000=56452 or 105/18.6*10000=56452.
  32 static const int fl_tbl[] = {6200, 7230, 8295, 9681, 11614, 14303, 18600};
  33 #define CF_EFL 56452
  34 #define NUM_FL (sizeof(fl_tbl)/sizeof(fl_tbl[0]))
  35 
  36 const int zoom_points = NUM_FL;
  37 
  38 int get_effective_focal_length(int zp) {
  39     return (CF_EFL*get_focal_length(zp))/10000;
  40 }
  41 
  42 int get_focal_length(int zp) {
  43     if (zp<0) return fl_tbl[0];
  44     else if (zp>NUM_FL-1) return fl_tbl[NUM_FL-1];
  45     else return fl_tbl[zp];
  46 }
  47 
  48 int get_zoom_x(int zp) {
  49     if (zp<1) return 10;
  50     else if (zp>NUM_FL-1) return fl_tbl[NUM_FL-1]*10/fl_tbl[0];
  51     else return fl_tbl[zp]*10/fl_tbl[0];
  52 }
  53 
  54 
  55 long get_vbatt_min()
  56 {
  57     return 3500;
  58 }
  59 
  60 long get_vbatt_max()
  61 {
  62     return 4100;
  63 }
  64 

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