af_demo.c

dm270 source code

/* Hardware auto-focus control sys init, execute routines */

#include <stdio.h> 
#include <user/af_ctrl.h>

#include <h3a/af_alg_externs.h>

extern AF_CTRL af_ctrl_1, af_ctrl_2;

void AFDemoReset();
void AFDemoRun(Uint16 af_alg_id, Uint16 hstart, Uint16 hend, Uint16 vstart, Uint16 vend, Uint16 ccd_mode);

/*
   Needs to be called once during system initialization
*/
void AFDemoInit() {
    AFAlg1Init();
    AFAlg2Init();
}


/*
    Needs to be called to execute the auto-focus algorithm
*/

/*
Uint16 af_id,
0:  ALGO - Rule-based    , AREA - center vertical 3x4	// NOT SUPPORTED
1:  ALGO - Rule-based    , AREA - center horizontal 5x2 // NOT SUPPORTED
2:  ALGO - Rule-based    , AREA - complete area 9x4		// NOT SUPPORTED
3:  ALGO - Global-search , AREA - center vertical 3x4
4:  ALGO - Global-search , AREA - center horizontal 5x2
5:  ALGO - Global-search , AREA - complete area 9x4

Uint16 ccd_mode
0: draft mode
1: af1 mode

Recommended usage,
    AFSysExecute(0,0);
*/
void AFDemoExecute(Uint16 af_id, Uint16 ccd_mode) {
    Uint16 af_alg_id, hstart, hend, vstart,  vend;

    if(af_id > 5)
        return;

    switch(af_id) {
        case 0:
            af_alg_id   =1;
            hstart      =3;
            hend        =5;
            vstart      =0;
            vend        =3;
            break;
        case 1:
            af_alg_id   =1;
            hstart      =2;
            hend        =6;
            vstart      =1;
            vend        =2;
            break;
        case 2:
            af_alg_id   =1;
            hstart      =0;
            hend        =8;
            vstart      =0;
            vend        =3;
            break;
        case 3:
            af_alg_id   =0;
            hstart      =3;
            hend        =5;
            vstart      =0;
            vend        =3;
            break;
        case 4:
            af_alg_id   =0;
            hstart      =2;
            hend        =6;
            vstart      =1;
            vend        =2;
        case 5:
            af_alg_id   =0;
            hstart      =0;
            hend        =8;
            vstart      =0;
            vend        =3;
            break;
    }

	AFDemoRun(af_alg_id, hstart, hend, vstart, vend, ccd_mode);
}


/*
Uint16 af_alg_id    ::  Auto-focus algo, 1:Rule-based, 0:Global-search
Uint16 hstart       ::  0..8, hstart <= hend
Uint16 hend         ::  0..8
Uint16 vstart       ::  0..3, vstart <= vend
Uint16 vend         ::  0..3
Uint16 ccd_mode		::  0:draft mode, 1:AF1 mode
Recommended usage,
    AFSysExecute( 0, 3, 5, 0, 3, 0); // i.e ALGO - Rule-based    , AREA - center vertical 3x4, draft mode
*/

void AFDemoRun(Uint16 af_alg_id, Uint16 hstart, Uint16 hend, Uint16 vstart, Uint16 vend, Uint16 ccd_mode) {
    AF_CTRL *af_ctrl=NULL;

    AFAlgSetArea(hstart, hend, vstart, vend);
    if(af_alg_id==0)
        af_ctrl=&af_ctrl_1;	
    if(af_alg_id==1)
        //af_ctrl=&af_ctrl_2; // NOT SUPPORTED
		af_ctrl=&af_ctrl_1;
    if(af_ctrl!=NULL) {
        AFInit( af_ctrl );
        AFExecute( af_ctrl );
    }
}


/*
	Needs to be called atleast once after lens initialization but before first still capture is done
    Also needs to be called only if "focus motor position" is changed by a routine other than those called during
    Auto-focus execution
*/
void AFDemoReset() {
    AFAlgFocusMotorInit();
}