#include "lolevel.h"
#include "platform.h"
#include "core.h"
#include "keyboard.h"
#include "math.h"
#include "conf.h"

#ifndef CAM_FILE_COUNTER_IS_VAR
#ifndef PARAM_FILE_COUNTER
#	error Please define PARAM_FILE_COUNTER in platform/CAMERA/shooting.c!
#endif
#endif

#define AV96_MIN (aperture_sizes_table[0].prop_id)

const unsigned int SS_SIZE  = sizeof(shutter_speeds_table)/sizeof(shutter_speeds_table[0]);
const unsigned int AS_SIZE  = sizeof(aperture_sizes_table)/sizeof(aperture_sizes_table[0]);
const unsigned int ISO_SIZE = sizeof(iso_table)/sizeof(iso_table[0]);
const unsigned int MODESCNT = sizeof(modemap)/sizeof(modemap[0]);

#ifndef CAM_FILE_COUNTER_IS_VAR
const unsigned int param_file_counter = PARAM_FILE_COUNTER;
#endif

//-------------------------------------------------------------------

// Note: shooting functions moved to core/shooting.c
//       this compiles them as THUMB code to save space

//-------------------------------------------------------------------

//***********************
/*

static char debug_str[60];

void debug_char(char * deb_str)
{
 short debug_str_length=strlen(debug_str);
 if	(debug_str_length>50) strcpy(debug_str, "");
 sprintf(debug_str+debug_str_length, "%s", deb_str);
}

void debug_init()
{
 strcpy(debug_str, "");
}


void debug_int(int deb_str)
{
 short debug_str_length=strlen(debug_str);
 if	(debug_str_length>50) strcpy(debug_str, "");
 sprintf(debug_str+debug_str_length, "%d", deb_str);
}


void debug(char * deb_str, int deb_int)
{
 short debug_str_length=strlen(debug_str);
 if	(debug_str_length>50) strcpy(debug_str, "");
 sprintf(debug_str+debug_str_length, "%s", deb_str);
 sprintf(debug_str+strlen(debug_str), "%d", deb_int);
}

char * get_debug()
{
 return debug_str;
}
*/
//***********************

// Core override function
void __attribute__((naked,noinline)) shooting_expo_param_override(void)
{
    // Save registers
    asm volatile("STMFD   SP!, {R0-R12,LR}\n");

    // Call thumb code version in core/shooting.c
    extern void shooting_expo_param_override_thumb();
    shooting_expo_param_override_thumb();

    // Restore registers
    asm volatile("LDMFD   SP!, {R0-R12,PC}\n");
}

// Override ISO settings only
// need to do this before exposure calc for ISO, as well as after on some cameras
void __attribute__((naked,noinline)) shooting_expo_iso_override(void)
{
    // Save registers
    asm volatile("STMFD   SP!, {R0-R12,LR}\n");

    // Call thumb code version in core/shooting.c
    extern void shooting_expo_iso_override_thumb(void);
    shooting_expo_iso_override_thumb();

    // Restore registers
    asm volatile("LDMFD   SP!, {R0-R12,PC}\n");
}

// this can be used to create event procedure "hooks" at certain points in the camera firmware
// as described in http://chdk.setepontos.com/index.php/topic,5690.0.html
// not currently used
#if 0
//extern unsigned _ExecuteEventProcedure(const char *name,...);
extern int overridden_PT_CompleteFileWrite();

// ExecuteEventProducedure isn't safe to call from thumb on all cams
// since there's not much else here, not worth running through call_func_ptr
int register_pt_hooks() {
    // older cams only have SystemEventInit
    // TODO these probably don't support PT_CompleteFileWrite anyway
    if(_ExecuteEventProcedure("SystemEventInit") == -1) {
        if(_ExecuteEventProcedure("System.Create") == -1) {
            return 1;
        }
    }
    if(_ExecuteEventProcedure("RegisterProductTestEvent") == -1) {
        if(_ExecuteEventProcedure("SS.Create") == -1) {
            return 2;
        }
    }
    // check if PT_CompleteFileWrite eventproc was registered by above
    // if not registered, firmware returns -1
    // default PT_ComleteFileWrite normally returns 0, 
    // arg will handle if it just does a BX LR
    if(_ExecuteEventProcedure("PT_CompleteFileWrite",0) == -1) {
        return 4;
    }
    // note override must be in ARM code
    if(_ExecuteEventProcedure("ExportToEventProcedure","PT_CompleteFileWrite",overridden_PT_CompleteFileWrite) == -1) {
        return 3;
    }
    //_LogCameraEvent(0x120,"pt hook(s) registered");
    return 0;
}
#endif