#------------------------------------------------------------------------------
# File:         CanonCustom.pm
#
# Description:  Read and write Canon Custom functions
#
# Revisions:    11/25/2003  - P. Harvey Created
#
# References:   1) http://park2.wakwak.com/~tsuruzoh/Computer/Digicams/exif-e.html
#               2) Christian Koller private communication (20D)
#               3) Rainer Honle private communication (5D)
#               4) David Pitcher private communication (1DmkIII firmware upgrade)
#               5) Laurent Clevy private communication
#------------------------------------------------------------------------------

package Image::ExifTool::CanonCustom;

use strict;
use vars qw($VERSION);
use Image::ExifTool qw(:DataAccess);
use Image::ExifTool::Canon;
use Image::ExifTool::Exif;

$VERSION = '1.30';

sub ProcessCanonCustom($$$);
sub ProcessCanonCustom2($$$);
sub WriteCanonCustom($$$);
sub WriteCanonCustom2($$$);
sub CheckCanonCustom($$$);
sub ConvertPFn($);
sub ConvertPFnInv($);

my %onOff = ( 0 => 'On', 1 => 'Off' );
my %offOn = ( 0 => 'Off', 1 => 'On' );
my %disableEnable = ( 0 => 'Disable', 1 => 'Enable' );
my %enableDisable = ( 0 => 'Enable', 1 => 'Disable' );
my %convPFn = ( PrintConv => \&ConvertPfn, PrintConvInv => \&ConvertPfnInv );

#------------------------------------------------------------------------------
# Custom functions for the 1D
# CanonCustom (keys are custom function number)
%Image::ExifTool::CanonCustom::Functions1D = (
    GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
    PROCESS_PROC => \&ProcessCanonCustom,
    WRITE_PROC => \&WriteCanonCustom,
    CHECK_PROC => \&CheckCanonCustom,
    WRITABLE => 'int8u',
    NOTES => q{
        These custom functions are used by all 1D models up to but not including the
        Mark III.
    },
    0 => {
        Name => 'FocusingScreen',
        PrintConv => {
            0 => 'Ec-N, R',
            1 => 'Ec-A,B,C,CII,CIII,D,H,I,L',
        },
    },
    1 => {
        Name => 'FinderDisplayDuringExposure',
        PrintConv => \%offOn,
    },
    2 => {
        Name => 'ShutterReleaseNoCFCard',
        Description => 'Shutter Release W/O CF Card',
        PrintConv => {
            0 => 'Yes',
            1 => 'No',
        },
    },
    3 => {
        Name => 'ISOSpeedExpansion',
        Description => 'ISO Speed Expansion',
        PrintConv => {
            0 => 'No',
            1 => 'Yes',
        },
    },
    4 => {
        Name => 'ShutterAELButton',
        Description => 'Shutter Button/AEL Button',
        PrintConv => {
            0 => 'AF/AE lock stop',
            1 => 'AE lock/AF',
            2 => 'AF/AF lock, No AE lock',
            3 => 'AE/AF, No AE lock',
        },
    },
    5 => {
        Name => 'ManualTv',
        Description => 'Manual Tv/Av For M',
        PrintConv => {
            0 => 'Tv=Main/Av=Control',
            1 => 'Tv=Control/Av=Main',
            2 => 'Tv=Main/Av=Main w/o lens',
            3 => 'Tv=Control/Av=Main w/o lens',
        },
    },
    6 => {
        Name => 'ExposureLevelIncrements',
        PrintConv => {
            0 => '1/3-stop set, 1/3-stop comp.',
            1 => '1-stop set, 1/3-stop comp.',
            2 => '1/2-stop set, 1/2-stop comp.',
        },
    },
    7 => {
        Name => 'USMLensElectronicMF',
        PrintConv => {
            0 => 'Turns on after one-shot AF',
            1 => 'Turns off after one-shot AF',
            2 => 'Always turned off',
        },
    },
    8 => {
        Name => 'LCDPanels',
        Description => 'Top/Back LCD Panels',
        PrintConv => {
            0 => 'Remain. shots/File no.',
            1 => 'ISO/Remain. shots',
            2 => 'ISO/File no.',
            3 => 'Shots in folder/Remain. shots',
        },
    },
    9 => {
        Name => 'AEBSequence',
        PrintConv => {
            0 => '0,-,+/Enabled',
            1 => '0,-,+/Disabled',
            2 => '-,0,+/Enabled',
            3 => '-,0,+/Disabled',
        },
    },
    10 => {
        Name => 'AFPointIllumination',
        PrintConv => {
            0 => 'On',
            1 => 'Off',
            2 => 'On without dimming',
            3 => 'Brighter',
        },
    },
    11 => {
        Name => 'AFPointSelection',
        PrintConv => {
            0 => 'H=AF+Main/V=AF+Command',
            1 => 'H=Comp+Main/V=Comp+Command',
            2 => 'H=Command only/V=Assist+Main',
            3 => 'H=FEL+Main/V=FEL+Command',
        },
    },
    12 => {
        Name => 'MirrorLockup',
        PrintConv => \%disableEnable,
    },
    13 => {
        Name => 'AFPointSpotMetering',
        Description => 'No. AF Points/Spot Metering',
        PrintConv => {
            0 => '45/Center AF point',
            1 => '11/Active AF point',
            2 => '11/Center AF point',
            3 => '9/Active AF point',
        },
    },
    14 => {
        Name => 'FillFlashAutoReduction',
        PrintConv => \%enableDisable,
    },
    15 => {
        Name => 'ShutterCurtainSync',
        PrintConv => {
            0 => '1st-curtain sync',
            1 => '2nd-curtain sync',
        },
    },
    16 => {
        Name => 'SafetyShiftInAvOrTv',
        PrintConv => \%disableEnable,
    },
    17 => {
        Name => 'AFPointActivationArea',
        PrintConv => {
            0 => 'Single AF point',
            1 => 'Expanded (TTL. of 7 AF points)',
            2 => 'Automatic expanded (max. 13)',
        },
    },
    18 => {
        Name => 'SwitchToRegisteredAFPoint',
        PrintConv => {
            0 => 'Assist + AF',
            1 => 'Assist',
            2 => 'Only while pressing assist',
        },
    },
    19 => {
        Name => 'LensAFStopButton',
        PrintConv => {
            0 => 'AF stop',
            1 => 'AF start',
            2 => 'AE lock while metering',
            3 => 'AF point: M -> Auto / Auto -> Ctr.',
            4 => 'AF mode: ONE SHOT <-> AI SERVO',
            5 => 'IS start',
        },
    },
    20 => {
        Name => 'AIServoTrackingSensitivity',
        PrintConv => {
            0 => 'Standard',
            1 => 'Slow',
            2 => 'Moderately slow',
            3 => 'Moderately fast',
            4 => 'Fast',
        },
    },
);

# Custom functions for the 5D (ref 3)
%Image::ExifTool::CanonCustom::Functions5D = (
    GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
    PROCESS_PROC => \&ProcessCanonCustom,
    WRITE_PROC => \&WriteCanonCustom,
    CHECK_PROC => \&CheckCanonCustom,
    WRITABLE => 'int8u',
    0 => {
        Name => 'FocusingScreen',
        PrintConv => {
            0 => 'Ee-A',
            1 => 'Ee-D',
            2 => 'Ee-S',
        },
    },
    1 => {
        Name => 'SetFunctionWhenShooting',
        PrintConv => {
            0 => 'Default (no function)',
            1 => 'Change quality',
            2 => 'Change Parameters',
            3 => 'Menu display',
            4 => 'Image replay',
        },
    },
    2 => {
        Name => 'LongExposureNoiseReduction',
        PrintConv => {
            0 => 'Off',
            1 => 'Auto',
            2 => 'On',
        },
    },
    3 => {
        Name => 'FlashSyncSpeedAv',
        PrintConv => {
            0 => 'Auto',
            1 => '1/200 Fixed',
        },
    },
    4 => {
        Name => 'Shutter-AELock',
        PrintConv => {
            0 => 'AF/AE lock',
            1 => 'AE lock/AF',
            2 => 'AF/AF lock, No AE lock',
            3 => 'AE/AF, No AE lock',
        },
    },
    5 => {
        Name => 'AFAssistBeam',
        PrintConv => {
            0 => 'Emits',
            1 => 'Does not emit',
        },
    },
    6 => {
        Name => 'ExposureLevelIncrements',
        PrintConv => {
            0 => '1/3 Stop',
            1 => '1/2 Stop',
        },
    },
    7 => {
        Name => 'FlashFiring',
        PrintConv => {
            0 => 'Fires',
            1 => 'Does not fire',
        },
    },
    8 => {
        Name => 'ISOExpansion',
        PrintConv => \%offOn,
    },
    9 => {
        Name => 'AEBSequence',
        PrintConv => {
            0 => '0,-,+/Enabled',
            1 => '0,-,+/Disabled',
            2 => '-,0,+/Enabled',
            3 => '-,0,+/Disabled',
        },
    },
    10 => {
        Name => 'SuperimposedDisplay',
        PrintConv => \%onOff,
    },
    11 => {
        Name => 'MenuButtonDisplayPosition',
        PrintConv => {
            0 => 'Previous (top if power off)',
            1 => 'Previous',
            2 => 'Top',
        },
    },
    12 => {
        Name => 'MirrorLockup',
        PrintConv => \%disableEnable,
    },
    13 => {
        Name => 'AFPointSelectionMethod',
        PrintConv => {
            0 => 'Normal',
            1 => 'Multi-controller direct',
            2 => 'Quick Control Dial direct',
        },
    },
    14 => {
        Name => 'ETTLII',
        Description => 'E-TTL II',
        PrintConv => {
            0 => 'Evaluative',
            1 => 'Average',
        },
    },
    15 => {
        Name => 'ShutterCurtainSync',
        PrintConv => {
            0 => '1st-curtain sync',
            1 => '2nd-curtain sync',
        },
    },
    16 => {
        Name => 'SafetyShiftInAvOrTv',
        PrintConv => \%disableEnable,
    },
    17 => {
        Name => 'AFPointActivationArea',
        PrintConv => {
            0 => 'Standard',
            1 => 'Expanded',
        },
    },
    18 => {
        Name => 'LCDDisplayReturnToShoot',
        PrintConv => {
            0 => 'With Shutter Button only',
            1 => 'Also with * etc.',
        },
    },
    19 => {
        Name => 'LensAFStopButton',
        PrintConv => {
            0 => 'AF stop',
            1 => 'AF start',
            2 => 'AE lock while metering',
            3 => 'AF point: M -> Auto / Auto -> Ctr.',
            4 => 'ONE SHOT <-> AI SERVO',
            5 => 'IS start',
        },
    },
    20 => {
        Name => 'AddOriginalDecisionData',
        PrintConv => \%offOn,
    },
);

# Custom functions for 10D
%Image::ExifTool::CanonCustom::Functions10D = (
    GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
    PROCESS_PROC => \&ProcessCanonCustom,
    WRITE_PROC => \&WriteCanonCustom,
    CHECK_PROC => \&CheckCanonCustom,
    WRITABLE => 'int8u',
    1 => {
        Name => 'SetButtonFunction',
        PrintConv => {
            0 => 'Not assigned',
            1 => 'Change quality',
            2 => 'Change parameters',
            3 => 'Menu display',
            4 => 'Image replay',
        },
    },
    2 => {
        Name => 'ShutterReleaseNoCFCard',
        Description => 'Shutter Release W/O CF Card',
        PrintConv => {
            0 => 'Yes',
            1 => 'No',
        },
    },
    3 => {
        Name => 'FlashSyncSpeedAv',
        PrintConv => {
            0 => 'Auto',
            1 => '1/200 Fixed',
        },
    },
    4 => {
        Name => 'Shutter-AELock',
        PrintConv => {
            0 => 'AF/AE lock',
            1 => 'AE lock/AF',
            2 => 'AF/AF lock, No AE lock',
            3 => 'AE/AF, No AE lock',
        },
    },
    5 => {
        Name => 'AFAssist',
        Description => 'AF Assist/Flash Firing',
        PrintConv => {
            0 => 'Emits/Fires',
            1 => 'Does not emit/Fires',
            2 => 'Only ext. flash emits/Fires',
            3 => 'Emits/Does not fire',
        },
    },
    6 => {
        Name => 'ExposureLevelIncrements',
        PrintConv => {
            0 => '1/2 Stop',
            1 => '1/3 Stop',
        },
    },
    7 => {
        Name => 'AFPointRegistration',
        PrintConv => {
            0 => 'Center',
            1 => 'Bottom',
            2 => 'Right',
            3 => 'Extreme Right',
            4 => 'Automatic',
            5 => 'Extreme Left',
            6 => 'Left',
            7 => 'Top',
        },
    },
    8 => {
        Name => 'RawAndJpgRecording',
        PrintConv => {
            0 => 'RAW+Small/Normal',
            1 => 'RAW+Small/Fine',
            2 => 'RAW+Medium/Normal',
            3 => 'RAW+Medium/Fine',
            4 => 'RAW+Large/Normal',
            5 => 'RAW+Large/Fine',
        },
    },
    9 => {
        Name => 'AEBSequence',
        PrintConv => {
            0 => '0,-,+/Enabled',
            1 => '0,-,+/Disabled',
            2 => '-,0,+/Enabled',
            3 => '-,0,+/Disabled',
        },
    },
    10 => {
        Name => 'SuperimposedDisplay',
        PrintConv => \%onOff,
    },
    11 => {
        Name => 'MenuButtonDisplayPosition',
        PrintConv => {
            0 => 'Previous (top if power off)',
            1 => 'Previous',
            2 => 'Top',
        },
    },
    12 => {
        Name => 'MirrorLockup',
        PrintConv => \%disableEnable,
    },
    13 => {
        Name => 'AssistButtonFunction',
        PrintConv => {
            0 => 'Normal',
            1 => 'Select Home Position',
            2 => 'Select HP (while pressing)',
            3 => 'Av+/- (AF point by QCD)',
            4 => 'FE lock',
        },
    },
    14 => {
        Name => 'FillFlashAutoReduction',
        PrintConv => \%enableDisable,
    },
    15 => {
        Name => 'ShutterCurtainSync',
        PrintConv => {
            0 => '1st-curtain sync',
            1 => '2nd-curtain sync',
        },
    },
    16 => {
        Name => 'SafetyShiftInAvOrTv',
        PrintConv => \%disableEnable,
    },
    17 => {
        Name => 'LensAFStopButton',
        PrintConv => {
            0 => 'AF Stop',
            1 => 'Operate AF',
            2 => 'Lock AE and start timer',
        },
    },
);

# Custom functions for the 20D (ref 2)
%Image::ExifTool::CanonCustom::Functions20D = (
    GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
    PROCESS_PROC => \&ProcessCanonCustom,
    WRITE_PROC => \&WriteCanonCustom,
    CHECK_PROC => \&CheckCanonCustom,
    WRITABLE => 'int8u',
    0 => {
        Name => 'SetFunctionWhenShooting',
        PrintConv => {
            0 => 'Default (no function)',
            1 => 'Change quality',
            2 => 'Change Parameters',
            3 => 'Menu display',
            4 => 'Image replay',
        },
    },
    1 => {
        Name => 'LongExposureNoiseReduction',
        PrintConv => \%offOn,
    },
    2 => {
        Name => 'FlashSyncSpeedAv',
        PrintConv => {
            0 => 'Auto',
            1 => '1/250 Fixed',
        },
    },
    3 => {
        Name => 'Shutter-AELock',
        PrintConv => {
            0 => 'AF/AE lock',
            1 => 'AE lock/AF',
            2 => 'AF/AF lock, No AE lock',
            3 => 'AE/AF, No AE lock',
        },
    },
    4 => {
        Name => 'AFAssistBeam',
        PrintConv => {
            0 => 'Emits',
            1 => 'Does not emit',
            2 => 'Only ext. flash emits',
        },
    },
    5 => {
        Name => 'ExposureLevelIncrements',
        PrintConv => {
            0 => '1/3 Stop',
            1 => '1/2 Stop',
        },
    },
    6 => {
        Name => 'FlashFiring',
        PrintConv => {
            0 => 'Fires',
            1 => 'Does not fire',
        },
    },
    7 => {
        Name => 'ISOExpansion',
        PrintConv => \%offOn,
    },
    8 => {
        Name => 'AEBSequence',
        PrintConv => {
            0 => '0,-,+/Enabled',
            1 => '0,-,+/Disabled',
            2 => '-,0,+/Enabled',
            3 => '-,0,+/Disabled',
        },
    },
    9 => {
        Name => 'SuperimposedDisplay',
        PrintConv => \%onOff,
    },
    10 => {
        Name => 'MenuButtonDisplayPosition',
        PrintConv => {
            0 => 'Previous (top if power off)',
            1 => 'Previous',
            2 => 'Top',
        },
    },
    11 => {
        Name => 'MirrorLockup',
        PrintConv => \%disableEnable,
    },
    12 => {
        Name => 'AFPointSelectionMethod',
        PrintConv => {
            0 => 'Normal',
            1 => 'Multi-controller direct',
            2 => 'Quick Control Dial direct',
        },
    },
    13 => {
        Name => 'ETTLII',
        Description => 'E-TTL II',
        PrintConv => {
            0 => 'Evaluative',
            1 => 'Average',
        },
    },
    14 => {
        Name => 'ShutterCurtainSync',
        PrintConv => {
            0 => '1st-curtain sync',
            1 => '2nd-curtain sync',
        },
    },
    15 => {
        Name => 'SafetyShiftInAvOrTv',
        PrintConv => \%disableEnable,
    },
    16 => {
        Name => 'LensAFStopButton',
        PrintConv => {
            0 => 'AF stop',
            1 => 'AF start',
            2 => 'AE lock while metering',
            3 => 'AF point: M -> Auto / Auto -> Ctr.',
            4 => 'ONE SHOT <-> AI SERVO',
            5 => 'IS start',
        },
    },
    17 => {
        Name => 'AddOriginalDecisionData',
        PrintConv => \%offOn,
    },
);

# Custom functions for the 30D (PH)
%Image::ExifTool::CanonCustom::Functions30D = (
    GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
    PROCESS_PROC => \&ProcessCanonCustom,
    WRITE_PROC => \&WriteCanonCustom,
    CHECK_PROC => \&CheckCanonCustom,
    WRITABLE => 'int8u',
    1 => {
        Name => 'SetFunctionWhenShooting',
        PrintConv => {
            0 => 'Default (no function)',
            1 => 'Change quality',
            2 => 'Change Picture Style',
            3 => 'Menu display',
            4 => 'Image replay',
        },
    },
    2 => {
        Name => 'LongExposureNoiseReduction',
        PrintConv => {
            0 => 'Off',
            1 => 'Auto',
            2 => 'On',
        },
    },
    3 => {
        Name => 'FlashSyncSpeedAv',
        PrintConv => {
            0 => 'Auto',
            1 => '1/250 Fixed',
        },
    },
    4 => {
        Name => 'Shutter-AELock',
        PrintConv => {
            0 => 'AF/AE lock',
            1 => 'AE lock/AF',
            2 => 'AF/AF lock, No AE lock',
            3 => 'AE/AF, No AE lock',
        },
    },
    5 => {
        Name => 'AFAssistBeam',
        PrintConv => {
            0 => 'Emits',
            1 => 'Does not emit',
            2 => 'Only ext. flash emits',
        },
    },
    6 => {
        Name => 'ExposureLevelIncrements',
        PrintConv => {
            0 => '1/3 Stop',
            1 => '1/2 Stop',
        },
    },
    7 => {
        Name => 'FlashFiring',
        PrintConv => {
            0 => 'Fires',
            1 => 'Does not fire',
        },
    },
    8 => {
        Name => 'ISOExpansion',
        PrintConv => \%offOn,
    },
    9 => {
        Name => 'AEBSequence',
        PrintConv => {
            0 => '0,-,+/Enabled',
            1 => '0,-,+/Disabled',
            2 => '-,0,+/Enabled',
            3 => '-,0,+/Disabled',
        },
    },
    10 => {
        Name => 'SuperimposedDisplay',
        PrintConv => \%onOff,
    },
    11 => {
        Name => 'MenuButtonDisplayPosition',
        PrintConv => {
            0 => 'Previous (top if power off)',
            1 => 'Previous',
            2 => 'Top',
        },
    },
    12 => {
        Name => 'MirrorLockup',
        PrintConv => \%disableEnable,
    },
    13 => {
        Name => 'AFPointSelectionMethod',
        PrintConv => {
            0 => 'Normal',
            1 => 'Multi-controller direct',
            2 => 'Quick Control Dial direct',
        },
    },
    14 => {
        Name => 'ETTLII',
        Description => 'E-TTL II',
        PrintConv => {
            0 => 'Evaluative',
            1 => 'Average',
        },
    },
    15 => {
        Name => 'ShutterCurtainSync',
        PrintConv => {
            0 => '1st-curtain sync',
            1 => '2nd-curtain sync',
        },
    },
    16 => {
        Name => 'SafetyShiftInAvOrTv',
        PrintConv => \%disableEnable,
    },
    17 => {
        Name => 'MagnifiedView',
        PrintConv => {
            0 => 'Image playback only',
            1 => 'Image review and playback',
        },
    },
    18 => {
        Name => 'LensAFStopButton',
        PrintConv => {
            0 => 'AF stop',
            1 => 'AF start',
            2 => 'AE lock while metering',
            3 => 'AF point: M -> Auto / Auto -> Ctr.',
            4 => 'ONE SHOT <-> AI SERVO',
            5 => 'IS start',
        },
    },
    19 => {
        Name => 'AddOriginalDecisionData',
        PrintConv => \%offOn,
    },
);

# Custom functions for the 350D (PH)
%Image::ExifTool::CanonCustom::Functions350D = (
    GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
    PROCESS_PROC => \&ProcessCanonCustom,
    WRITE_PROC => \&WriteCanonCustom,
    CHECK_PROC => \&CheckCanonCustom,
    WRITABLE => 'int8u',
    0 => {
        Name => 'SetButtonCrossKeysFunc',
        PrintConv => {
            0 => 'Normal',
            1 => 'Set: Quality',
            2 => 'Set: Parameter',
            3 => 'Set: Playback',
            4 => 'Cross keys: AF point select',
        },
    },
    1 => {
        Name => 'LongExposureNoiseReduction',
        PrintConv => \%offOn,
    },
    2 => {
        Name => 'FlashSyncSpeedAv',
        PrintConv => {
            0 => 'Auto',
            1 => '1/200 Fixed',
        },
    },
    3 => {
        Name => 'Shutter-AELock',
        PrintConv => {
            0 => 'AF/AE lock',
            1 => 'AE lock/AF',
            2 => 'AF/AF lock, No AE lock',
            3 => 'AE/AF, No AE lock',
        },
    },
    4 => {
        Name => 'AFAssistBeam',
        PrintConv => {
            0 => 'Emits',
            1 => 'Does not emit',
            2 => 'Only ext. flash emits',
        },
    },
    5 => {
        Name => 'ExposureLevelIncrements',
        PrintConv => {
            0 => '1/3 Stop',
            1 => '1/2 Stop',
        },
    },
    6 => {
        Name => 'MirrorLockup',
        PrintConv => \%disableEnable,
    },
    7 => {
        Name => 'ETTLII',
        Description => 'E-TTL II',
        PrintConv => {
            0 => 'Evaluative',
            1 => 'Average',
        },
    },
    8 => {
        Name => 'ShutterCurtainSync',
        PrintConv => {
            0 => '1st-curtain sync',
            1 => '2nd-curtain sync',
        },
    },
);

# Custom functions for the 400D (PH)
%Image::ExifTool::CanonCustom::Functions400D = (
    GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
    PROCESS_PROC => \&ProcessCanonCustom,
    WRITE_PROC => \&WriteCanonCustom,
    CHECK_PROC => \&CheckCanonCustom,
    WRITABLE => 'int8u',
    0 => {
        Name => 'SetButtonCrossKeysFunc',
        PrintConv => {
            0 => 'Set: Picture Style',
            1 => 'Set: Quality',
            2 => 'Set: Flash Exposure Comp',
            3 => 'Set: Playback',
            4 => 'Cross keys: AF point select',
        },
    },
    1 => {
        Name => 'LongExposureNoiseReduction',
        PrintConv => {
            0 => 'Off',
            1 => 'Auto',
            2 => 'On',
        },
    },
    2 => {
        Name => 'FlashSyncSpeedAv',
        PrintConv => {
            0 => 'Auto',
            1 => '1/200 Fixed',
        },
    },
    3 => {
        Name => 'Shutter-AELock',
        PrintConv => {
            0 => 'AF/AE lock',
            1 => 'AE lock/AF',
            2 => 'AF/AF lock, No AE lock',
            3 => 'AE/AF, No AE lock',
        },
    },
    4 => {
        Name => 'AFAssistBeam',
        PrintConv => {
            0 => 'Emits',
            1 => 'Does not emit',
            2 => 'Only ext. flash emits',
        },
    },
    5 => {
        Name => 'ExposureLevelIncrements',
        PrintConv => {
            0 => '1/3 Stop',
            1 => '1/2 Stop',
        },
    },
    6 => {
        Name => 'MirrorLockup',
        PrintConv => \%disableEnable,
    },
    7 => {
        Name => 'ETTLII',
        Description => 'E-TTL II',
        PrintConv => {
            0 => 'Evaluative',
            1 => 'Average',
        },
    },
    8 => {
        Name => 'ShutterCurtainSync',
        PrintConv => {
            0 => '1st-curtain sync',
            1 => '2nd-curtain sync',
        },
    },
    9 => {
        Name => 'MagnifiedView',
        PrintConv => {
            0 => 'Image playback only',
            1 => 'Image review and playback',
        },
    },
    10 => {
        Name => 'LCDDisplayAtPowerOn',
        PrintConv => {
            0 => 'Display',
            1 => 'Retain power off status',
        },
    },
);

# Custom functions for the D30/D60
%Image::ExifTool::CanonCustom::FunctionsD30 = (
    GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
    PROCESS_PROC => \&ProcessCanonCustom,
    WRITE_PROC => \&WriteCanonCustom,
    CHECK_PROC => \&CheckCanonCustom,
    NOTES => 'Custom functions for the EOS-D30 and D60.',
    WRITABLE => 'int8u',
    1 => {
        Name => 'LongExposureNoiseReduction',
        PrintConv => \%offOn,
    },
    2 => {
        Name => 'Shutter-AELock',
        PrintConv => {
            0 => 'AF/AE lock',
            1 => 'AE lock/AF',
            2 => 'AF/AF lock',
            3 => 'AE+release/AE+AF',
        },
    },
    3 => {
        Name => 'MirrorLockup',
        PrintConv => \%disableEnable,
    },
    4 => {
        Name => 'ExposureLevelIncrements',
        PrintConv => {
            0 => '1/2 Stop',
            1 => '1/3 Stop',
        },
    },
    5 => {
        Name => 'AFAssist',
        PrintConv => {
            0 => 'Emits/Fires',
            1 => 'Does not emit/Fires',
            2 => 'Only ext. flash emits/Fires',
            3 => 'Emits/Does not fire',
        },
    },
    6 => {
        Name => 'FlashSyncSpeedAv',
        PrintConv => {
            0 => 'Auto',
            1 => '1/200 Fixed',
        },
    },
    7 => {
        Name => 'AEBSequence',
        PrintConv => {
            0 => '0,-,+/Enabled',
            1 => '0,-,+/Disabled',
            2 => '-,0,+/Enabled',
            3 => '-,0,+/Disabled',
        },
    },
    8 => {
        Name => 'ShutterCurtainSync',
        PrintConv => {
            0 => '1st-curtain sync',
            1 => '2nd-curtain sync',
        },
    },
    9 => {
        Name => 'LensAFStopButton',
        PrintConv => {
            0 => 'AF Stop',
            1 => 'Operate AF',
            2 => 'Lock AE and start timer',
        },
    },
    10 => {
        Name => 'FillFlashAutoReduction',
        PrintConv => \%enableDisable,
    },
    11 => {
        Name => 'MenuButtonReturn',
        PrintConv => {
            0 => 'Top',
            1 => 'Previous (volatile)',
            2 => 'Previous',
        },
    },
    12 => {
        Name => 'SetButtonFunction',
        PrintConv => {
            0 => 'Not assigned',
            1 => 'Change quality',
            2 => 'Change ISO speed',
            3 => 'Select parameters',
        },
    },
    13 => {
        Name => 'SensorCleaning',
        PrintConv => \%disableEnable,
    },
    14 => {
        Name => 'SuperimposedDisplay',
        PrintConv => \%onOff,
    },
    15 => {
        Name => 'ShutterReleaseNoCFCard',
        Description => 'Shutter Release W/O CF Card',
        PrintConv => {
            0 => 'Yes',
            1 => 'No',
        },
    },
);

# Custom functions for unknown cameras
%Image::ExifTool::CanonCustom::FuncsUnknown = (
    GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
    PROCESS_PROC => \&ProcessCanonCustom,
);

# 1D personal function settings (ref PH)
%Image::ExifTool::CanonCustom::PersonalFuncs = (
    GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
    PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
    WRITE_PROC => \&Image::ExifTool::WriteBinaryData,
    CHECK_PROC => \&Image::ExifTool::CheckBinaryData,
    WRITABLE => 1,
    NOTES => 'Personal function settings for the EOS-1D.',
    FORMAT => 'int16u',
    FIRST_ENTRY => 1,
    1 => { Name => 'PF0CustomFuncRegistration', %convPFn },
    2 => { Name => 'PF1DisableShootingModes',   %convPFn },
    3 => { Name => 'PF2DisableMeteringModes',   %convPFn },
    4 => { Name => 'PF3ManualExposureMetering', %convPFn },
    5 => { Name => 'PF4ExposureTimeLimits',     %convPFn },
    6 => { Name => 'PF5ApertureLimits',         %convPFn },
    7 => { Name => 'PF6PresetShootingModes',    %convPFn },
    8 => { Name => 'PF7BracketContinuousShoot', %convPFn },
    9 => { Name => 'PF8SetBracketShots',        %convPFn },
    10 => { Name => 'PF9ChangeBracketSequence', %convPFn },
    11 => { Name => 'PF10RetainProgramShift',   %convPFn },
    #12 => { Name => 'PF11Unused',               %convPFn },
    #13 => { Name => 'PF12Unused',               %convPFn },
    14 => { Name => 'PF13DrivePriority',        %convPFn },
    15 => { Name => 'PF14DisableFocusSearch',   %convPFn },
    16 => { Name => 'PF15DisableAFAssistBeam',  %convPFn },
    17 => { Name => 'PF16AutoFocusPointShoot',  %convPFn },
    18 => { Name => 'PF17DisableAFPointSel',    %convPFn },
    19 => { Name => 'PF18EnableAutoAFPointSel', %convPFn },
    20 => { Name => 'PF19ContinuousShootSpeed', %convPFn },
    21 => { Name => 'PF20LimitContinousShots',  %convPFn },
    22 => { Name => 'PF21EnableQuietOperation', %convPFn },
    #23 => { Name => 'PF22Unused',               %convPFn },
    24 => { Name => 'PF23SetTimerLengths',      %convPFn },
    25 => { Name => 'PF24LightLCDDuringBulb',   %convPFn },
    26 => { Name => 'PF25DefaultClearSettings', %convPFn },
    27 => { Name => 'PF26ShortenReleaseLag',    %convPFn },
    28 => { Name => 'PF27ReverseDialRotation',  %convPFn },
    29 => { Name => 'PF28NoQuickDialExpComp',   %convPFn },
    30 => { Name => 'PF29QuickDialSwitchOff',   %convPFn },
    31 => { Name => 'PF30EnlargementMode',      %convPFn },
    32 => { Name => 'PF31OriginalDecisionData', %convPFn },
);

# 1D personal function values (ref PH)
%Image::ExifTool::CanonCustom::PersonalFuncValues = (
    GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
    PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
    WRITE_PROC => \&Image::ExifTool::WriteBinaryData,
    CHECK_PROC => \&Image::ExifTool::CheckBinaryData,
    WRITABLE => 1,
    FORMAT => 'int16u',
    FIRST_ENTRY => 1,
    1 => 'PF1Value',
    2 => 'PF2Value',
    3 => 'PF3Value',
    4 => {
        Name => 'PF4ExposureTimeMin',
        RawConv => '$val > 0 ? $val : 0',
        ValueConv => 'exp(-Image::ExifTool::Canon::CanonEv($val*4)*log(2))*1000/8',
        ValueConvInv => 'Image::ExifTool::Canon::CanonEvInv(-log($val*8/1000)/log(2))/4',
        PrintConv => 'Image::ExifTool::Exif::PrintExposureTime($val)',
        PrintConvInv => 'eval $val',
    },
    5 => {
        Name => 'PF4ExposureTimeMax',
        RawConv => '$val > 0 ? $val : 0',
        ValueConv => 'exp(-Image::ExifTool::Canon::CanonEv($val*4)*log(2))*1000/8',
        ValueConvInv => 'Image::ExifTool::Canon::CanonEvInv(-log($val*8/1000)/log(2))/4',
        PrintConv => 'Image::ExifTool::Exif::PrintExposureTime($val)',
        PrintConvInv => 'eval $val',
    },
    6 => {
        Name => 'PF5ApertureMin',
        RawConv => '$val > 0 ? $val : 0',
        ValueConv => 'exp(Image::ExifTool::Canon::CanonEv($val*4-32)*log(2)/2)',
        ValueConvInv => '(Image::ExifTool::Canon::CanonEvInv(log($val)*2/log(2))+32)/4',
        PrintConv => 'sprintf("%.2g",$val)',
        PrintConvInv => '$val',
    },
    7 => {
        Name => 'PF5ApertureMax',
        RawConv => '$val > 0 ? $val : 0',
        ValueConv => 'exp(Image::ExifTool::Canon::CanonEv($val*4-32)*log(2)/2)',
        ValueConvInv => '(Image::ExifTool::Canon::CanonEvInv(log($val)*2/log(2))+32)/4',
        PrintConv => 'sprintf("%.2g",$val)',
        PrintConvInv => '$val',
    },
    8 => 'PF8BracketShots',
    9 => 'PF19ShootingSpeedLow',
    10 => 'PF19ShootingSpeedHigh',
    11 => 'PF20MaxContinousShots',
    12 => 'PF23ShutterButtonTime',
    13 => 'PF23FELockTime',
    14 => 'PF23PostReleaseTime',
    15 => 'PF25AEMode',
    16 => 'PF25MeteringMode',
    17 => 'PF25DriveMode',
    18 => 'PF25AFMode',
    19 => 'PF25AFPointSel',
    20 => 'PF25ImageSize',
    21 => 'PF25WBMode',
    22 => 'PF25Parameters',
    23 => 'PF25ColorMatrix',
    24 => 'PF27Value',
);

# Custom functions used by the 1D Mark III and later models (ref PH)
%Image::ExifTool::CanonCustom::Functions2 = (
    GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
    PROCESS_PROC => \&ProcessCanonCustom2,
    CHECK_PROC => \&Image::ExifTool::Exif::CheckExif,
    WRITE_PROC => \&WriteCanonCustom2,
    WRITABLE => 'int32s',
    NOTES => q{
        Beginning with the EOS 1D Mark III, Canon finally created a set of custom
        function tags which are (reasonably) consistent across models.  The EOS 1D
        Mark III has 57 custom function tags divided into four main groups: 1.
        Exposure (0x0101-0x010f), 2. Image (0x0201-0x0203), Flash Exposure
        (0x0304-0x0306) and Display (0x0407-0x0409), 3. Auto Focus (0x0501-0x050e)
        and Drive (0x060f-0x0611), and 4. Operation (0x0701-0x070a) and Others
        (0x080b-0x0810).  The table below lists tags used by the EOS 1D Mark III, as
        well as newer tags and values added by later models.
    },
    # grouped in 4 groups:
    # 1) Exposure
    0x0101 => [
        {
            Name => 'ExposureLevelIncrements',
            Notes => '1D Mark III',
            Condition => '$$self{Model} =~ /\b1Ds?\b/',
            PrintConv => {
                0 => '1/3-stop set, 1/3-stop comp.',
                1 => '1-stop set, 1/3-stop comp.',
                2 => '1/2-stop set, 1/2-stop comp.',
            },
        },
        {
            Name => 'ExposureLevelIncrements',
            Notes => 'other models',
            PrintConv => {
                0 => '1/3 Stop',
                1 => '1/2 Stop',
            },
        },
    ],
    0x0102 => {
        Name => 'ISOSpeedIncrements',
        PrintConv => {
            0 => '1/3 Stop',
            1 => '1 Stop',
        },
    },
    0x0103 => [
        {
            Name => 'ISOExpansion',
            Condition => '$$self{Model} =~ /\b(40D|50D|5D Mark II)\b/',
            Notes => '40D, 50D and 5DmkII',
            PrintConv => {
                0 => 'Off',
                1 => 'On',
            },
        },
        {
            Name => 'ISOSpeedRange',
            Notes => '1D Mark III',
            Count => 3,
            # (this decoding may not be valid for CR2 images?)
            ValueConv => [
                undef,
                # this may also be set to "H" (Hi6400) -- is this the -1 value I see? - PH
                '$val < 2 ? $val : ($val < 1000 ? exp(($val/8-9)*log(2))*100 : 0)', # (educated guess)
                # this may also be set to "L" (Lo50) -- is this the 1 value I see? - PH
                '$val < 2 ? $val : ($val < 1000 ? exp(($val/8-9)*log(2))*100 : 0)', # (educated guess)
            ],
            ValueConvInv => [
                undef,
                '$val < 2 ? $val : int(8*(log($val/100)/log(2)+9) + 0.5)',
                '$val < 2 ? $val : int(8*(log($val/100)/log(2)+9) + 0.5)',
            ],
            PrintConv => [
                \%disableEnable,
                'sprintf("Max %.0f",$val)',
                'sprintf("Min %.0f",$val)',
            ],
            PrintConvInv => [
                undef,
                '$val=~/(-?[\d.]+)/ ? $1 : 0',
                '$val=~/(-?[\d.]+)/ ? $1 : 0',
            ],
        },
    ],
    0x0104 => {
        Name => 'AEBAutoCancel',
        PrintConv => \%onOff,
    },
    0x0105 => {
        Name => 'AEBSequence',
        Notes => 'value of 2 not used by 40D, 50D and 5DmkII',
        PrintConv => {
            0 => '0,-,+',
            1 => '-,0,+',
            2 => '+,0,-',
        },
    },
    0x0106 => {
        Name => 'AEBShotCount',
        PrintConv => {
            0 => 3,
            1 => 2,
            2 => 5,
            3 => 7,
        },
    },
    0x0107 => {
        Name => 'SpotMeterLinkToAFPoint',
        PrintConv => {
            0 => 'Disable (use center AF point)',
            1 => 'Enable (use active AF point)',
        },
    },
    0x0108 => {
        Name => 'SafetyShift',
        Notes => 'value of 2 not used by 40D, 50D and 5DmkII',
        PrintConv => {
            0 => 'Disable',
            1 => 'Enable (Tv/Av)',
            2 => 'Enable (ISO speed)',
        },
    },
    0x0109 => {
        Name => 'UsableShootingModes',
        Count => 2,
        PrintConv => [
            \%disableEnable,
            'sprintf("Flags 0x%x",$val)', # (M, Tv, Av, P, Bulb)
        ],
        PrintConvInv => [
            undef,
            '$val=~/0x([\dA-F]+)/i ? hex($1) : undef',
        ],
    },
    0x010a => {
        Name => 'UsableMeteringModes',
        Count => 2,
        PrintConv => [
            \%disableEnable,
            'sprintf("Flags 0x%x",$val)', # (evaluative,partial,spot,center-weighted average)
        ],
        PrintConvInv => [
            undef,
            '$val=~/0x([\dA-F]+)/i ? hex($1) : undef',
        ],
    },
    0x010b => {
        Name => 'ExposureModeInManual',
        PrintConv => {
            0 => 'Specified metering mode',
            1 => 'Evaluative metering',
            2 => 'Partial metering',
            3 => 'Spot metering',
            4 => 'Center-weighted average',
        },
    },
    0x010c => {
        Name => 'ShutterSpeedRange',
        Count => 3,
        ValueConv => [
            undef,
            'exp(-($val/8-7)*log(2))',
            'exp(-($val/8-7)*log(2))',
        ],
        ValueConvInv => [
            undef,
            'int(-8*(log($val)/log(2)-7) + 0.5)',
            'int(-8*(log($val)/log(2)-7) + 0.5)',
        ],
        PrintConv => [
            \%disableEnable,
            '"Hi " . Image::ExifTool::Exif::PrintExposureTime($val)',
            '"Lo " . Image::ExifTool::Exif::PrintExposureTime($val)',
        ],
        PrintConvInv => [
            undef,
            '$val=~m{([\d./]+)} ? eval $1 : 0',
            '$val=~m{([\d./]+)} ? eval $1 : 0',
        ],
    },
    0x010d => {
        Name => 'ApertureRange',
        Count => 3,
        ValueConv => [
            undef,
            'exp(($val/8-1)*log(2)/2)',
            'exp(($val/8-1)*log(2)/2)',
        ],
        ValueConvInv => [
            undef,
            'int(8*(log($val)*2/log(2)+1) + 0.5)',
            'int(8*(log($val)*2/log(2)+1) + 0.5)',
        ],
        PrintConv => [
            \%disableEnable,
            'sprintf("Closed %.2g",$val)',
            'sprintf("Open %.2g",$val)',
        ],
        PrintConvInv => [
            undef,
            '$val=~/([\d.]+)/ ? $1 : 0',
            '$val=~/([\d.]+)/ ? $1 : 0',
        ],
    },
    0x010e => {
        Name => 'ApplyShootingMeteringMode',
        Count => 8,
        PrintConv => [
            \%disableEnable,
        ],
    },
    0x010f => [
        {
            Name => 'FlashSyncSpeedAv',
            Condition => '$$self{Model} =~ /\b40D\b/',
            Notes => '40D',
            PrintConv => {
                0 => 'Auto',
                1 => '1/250 Fixed',
            },
        },
        {
            Name => 'FlashSyncSpeedAv',
            Condition => '$$self{Model} =~ /\b50D\b/',
            Notes => '50D',
            PrintConv => {
                0 => 'Auto',
                1 => '1/250-1/60 Auto',
                2 => '1/250 Fixed',
            },
        },
        {
            Name => 'FlashSyncSpeedAv',
            Condition => '$$self{Model} =~ /\b(450D|XSi|Kiss X2|1000D|XS|Kiss F)\b/',
            Notes => '450D and 1000D',
            PrintConv => {
                0 => 'Auto',
                1 => '1/200 Fixed',
            },
        },
        {
            Name => 'FlashSyncSpeedAv',
            Condition => '$$self{Model} =~ /\b5D Mark II\b/',
            Notes => '5D Mark II',
            PrintConv => {
                0 => 'Auto',
                1 => '1/200-1/60 Auto',
                2 => '1/200 Fixed',
            },
        },
        {
            Name => 'FlashSyncSpeedAv',
            Notes => '1D Mark III',
            PrintConv => {
                0 => 'Auto',
                1 => '1/300 Fixed',
            },
        },
    ],
    #### 2a) Image
    0x0201 => {
        Name => 'LongExposureNoiseReduction',
        PrintConv => {
            0 => 'Off',
            1 => 'Auto',
            2 => 'On',
        },
    },
    0x0202 => [
        {
            Name => 'HighISONoiseReduction',
            Condition => '$$self{Model} =~ /\b(50D|5D Mark II)\b/',
            Notes => '50D and 5DmkII',
            PrintConv => {
                0 => 'Standard',
                1 => 'Low',
                2 => 'Strong',
                3 => 'Disable',
            },
        },
        {
            Name => 'HighISONoiseReduction',
            Notes => 'other models',
            PrintConv => \%offOn,
        },
    ],
    0x0203 => {
        Name => 'HighlightTonePriority',
        PrintConv => \%disableEnable
    },
    0x0204 => [
        {
            Name => 'AutoLightingOptimizer',
            Condition => '$$self{Model} =~ /\b(50D|5D Mark II)\b/',
            Notes => '50D and 5DmkII',
            PrintConv => { #5
                0 => 'Standard',
                1 => 'Low',
                2 => 'Strong',
                3 => 'Disable',
            },
        },
        {
            Name => 'AutoLightingOptimizer',
            Notes => 'other models',
            PrintConv => \%enableDisable,
        },
    ],
    #### 2b) Flash exposure
    0x0304 => {
        Name => 'ETTLII',
        Description => 'E-TTL II',
        PrintConv => {
            0 => 'Evaluative',
            1 => 'Average',
        },
    },
    0x0305 => {
        Name => 'ShutterCurtainSync',
        PrintConv => {
            0 => '1st-curtain sync',
            1 => '2nd-curtain sync',
        },
    },
    0x0306 => {
        Name => 'FlashFiring',
        PrintConv => {
            0 => 'Fires',
            1 => 'Does not fire',
        },
    },
    #### 2c) Display
    0x0407 => {
        Name => 'ViewInfoDuringExposure',
        PrintConv => \%disableEnable,
    },
    0x0408 => {
        Name => 'LCDIlluminationDuringBulb',
        PrintConv => \%offOn,
    },
    0x0409 => {
        Name => 'InfoButtonWhenShooting',
        PrintConv => {
            0 => 'Displays camera settings',
            1 => 'Displays shooting functions',
        },
    },
    #### 3a) Auto focus
    0x0501 => {
        Name => 'USMLensElectronicMF',
        PrintConv => {
            0 => 'Enable after one-shot AF',
            1 => 'Disable after one-shot AF',
            2 => 'Disable in AF mode',
        },
    },
    0x0502 => {
        Name => 'AIServoTrackingSensitivity',
        PrintConv => {
           -2 => 'Slow',
           -1 => 'Medium Slow',
            0 => 'Standard',
            1 => 'Medium Fast',
            2 => 'Fast',
        },
    },
    0x0503 => {
        Name => 'AIServoImagePriority',
        PrintConv => {
            0 => '1: AF, 2: Tracking',
            1 => '1: AF, 2: Drive speed',
            2 => '1: Release, 2: Drive speed',
        },
    },
    0x0504 => {
        Name => 'AIServoTrackingMethod',
        PrintConv => {
            0 => 'Main focus point priority',
            1 => 'Continuous AF track priority',
        },
    },
    0x0505 => {
        Name => 'LensDriveNoAF',
        PrintConv => {
            0 => 'Focus search on',
            1 => 'Focus search off',
        },
    },
    0x0506 => {
        Name => 'LensAFStopButton',
        Notes => 'value of 6 not used by 40D, 50D and 5DmkII',
        PrintConv => {
            0 => 'AF stop',
            1 => 'AF start',
            2 => 'AE lock',
            3 => 'AF point: M->Auto/Auto->ctr',
            4 => 'One Shot <-> AI servo',
            5 => 'IS start',
            6 => 'Switch to registered AF point',
        },
    },
    0x0507 => {
        Name => 'AFMicroadjustment',
        Count => 5,
        PrintConv => [
            {
                0 => 'Disable',
                1 => 'Adjust all by same amount',
                2 => 'Adjust by lens',
            },
            # DECODE OTHER VALUES
        ],
    },
    0x0508 => [
        {
            Name => 'AFExpansionWithSelectedPoint',
            Condition => '$$self{Model} =~ /\b5D Mark II\b/',
            Notes => '5D Mark II',
            PrintConv => {
                0 => 'Disable',
                1 => 'Enable',
            },
        },
        {
            Name => 'AFExpansionWithSelectedPoint',
            PrintConv => {
                0 => 'Disable',
                1 => 'Enable (left/right assist points)',
                2 => 'Enable (surrounding assist points)',
            },
        },
    ],
    0x0509 => {
        Name => 'SelectableAFPoint',
        PrintConv => {
            0 => '19 points',
            1 => 'Inner 9 points',
            2 => 'Outer 9 points',
            3 => '19 Points, Multi-controller selectable', #4
            4 => 'Inner 9 Points, Multi-controller selectable', #4
            5 => 'Outer 9 Points, Multi-controller selectable', #4
        },
    },
    0x050a => {
        Name => 'SwitchToRegisteredAFPoint',
        PrintConv => \%disableEnable,
    },
    0x050b => {
        Name => 'AFPointAutoSelection',
        PrintConv => {
            0 => 'Control-direct:disable/Main:enable',
            1 => 'Control-direct:disable/Main:disable',
            2 => 'Control-direct:enable/Main:enable',
        },
    },
    0x050c => {
        Name => 'AFPointDisplayDuringFocus',
        PrintConv => {
            0 => 'On',
            1 => 'Off',
            2 => 'On (when focus achieved)',
        },
    },
    0x050d => {
        Name => 'AFPointBrightness',
        PrintConv => {
            0 => 'Normal',
            1 => 'Brighter',
        },
    },
    0x050e => {
        Name => 'AFAssistBeam',
        Notes => 'value of 2 not used by 1DmkIII or 5DmkII',
        PrintConv => {
            0 => 'Emits',
            1 => 'Does not emit',
            2 => 'Only ext. flash emits',
        },
    },
    0x050f => { # new for 40D
        Name => 'AFPointSelectionMethod',
        PrintConv => {
            0 => 'Normal',
            1 => 'Multi-controller direct',
            2 => 'Quick Control Dial direct',
        },
    },
    0x0510 => { # new for 40D
        Name => 'SuperimposedDisplay',
        PrintConv => \%onOff,
    },
    0x0511 => [ # new for 40D
        {
            Name => 'AFDuringLiveView',
            Condition => '$$self{Model} =~ /\b40D\b/',
            Notes => '40D',
            PrintConv => \%disableEnable,
        },
        {
            Name => 'AFDuringLiveView',
            Notes => '450D and 1000D',
            PrintConv => {
                0 => 'Disable',
                1 => 'Quick mode',
                2 => 'Live mode',
            },
        },
    ],
    #### 3b) Drive
    0x060f => {
        Name => 'MirrorLockup',
        Notes => 'value of 2 not used by 40D, 50D, 450D, 1000D or 5DmkII',
        PrintConv => {
            0 => 'Disable',
            1 => 'Enable',
            2 => 'Enable: Down with Set',
        },
    },
    0x0610 => {
        Name => 'ContinuousShootingSpeed',
        Count => 3,
        PrintConv => [
            \%disableEnable,
            '"Hi $val"',
            '"Lo $val"',
        ],
        PrintConvInv => [
            undef,
            '$val=~/(\d+)/ ? $1 : 0',
            '$val=~/(\d+)/ ? $1 : 0',
        ],
    },
    0x0611 => {
        Name => 'ContinuousShotLimit',
        Count => 2,
        PrintConv => [
            \%disableEnable,
            '"$val shots"',
        ],
        PrintConvInv => [
            undef,
            '$val=~/(\d+)/ ? $1 : 0',
        ],
    },
    #### 4a) Operation
    0x0701 => [
        {
            Name => 'Shutter-AELock',
            Condition => '$$self{Model} =~ /\b(1000D|XS|Kiss F)\b/',
            Notes => '1000D',
            PrintConv => {
                0 => 'AF/AE lock',
                1 => 'AE lock/AF',
                2 => 'AF/AF lock, No AE lock',
                3 => 'AE/AF, No AE lock',
            },
        },
        {
            Name => 'ShutterButtonAFOnButton',
            Notes => 'other models',
            PrintConv => {
                0 => 'Metering + AF start',
                1 => 'Metering + AF start/AF stop',
                2 => 'Metering start/Meter + AF start',
                3 => 'AE lock/Metering + AF start',
                4 => 'Metering + AF start / disable',
            },
        },
    ],
    0x0702 => {
        Name => 'AFOnAELockButtonSwitch',
        PrintConv => \%disableEnable,
    },
    0x0703 => {
        Name => 'QuickControlDialInMeter',
        PrintConv => {
            0 => 'Exposure comp/Aperture',
            1 => 'AF point selection',
            2 => 'ISO speed',
            3 => 'AF point selection swapped with Exposure comp', #4
            4 => 'ISO speed swapped with Exposure comp', #4
        },
    },
    0x0704 => [
        {
            Name => 'SetButtonWhenShooting',
            Condition => '$$self{Model} =~ /\b(40D|50D|5D Mark II)\b/',
            Notes => '40D, 50D and 5DmkII; value of 5 is new for 50D, and 6 is new for 5DmkII',
            PrintConv => {
                0 => 'Normal (disabled)',
                1 => 'Image quality',
                2 => 'Picture style',
                3 => 'Menu display',
                4 => 'Image playback',
                5 => 'Quick control screen', #50D
                6 => 'Record movie (Live View)', #5DmkII
            },
        },
        {
            Name => 'SetButtonWhenShooting',
            Condition => '$$self{Model} =~ /\b(450D|XSi|Kiss X2)\b/',
            Notes => '450D',
            PrintConv => {
                0 => 'Normal (disabled)',
                1 => 'Image quality',
                2 => 'Flash exposure compensation',
                3 => 'LCD monitor On/Off',
                4 => 'Menu display',
            },
        },
        {
            Name => 'SetButtonWhenShooting',
            Condition => '$$self{Model} =~ /\b(1000D|XS|Kiss F)\b/',
            Notes => '1000D',
            PrintConv => {
                0 => 'LCD monitor On/Off',
                1 => 'Image quality',
                2 => 'Flash exposure compensation',
                3 => 'Menu display',
                4 => 'Disabled',
            },
        },
        {
            Name => 'SetButtonWhenShooting',
            Notes => '1D Mark III',
            PrintConv => {
                0 => 'Normal (disabled)',
                1 => 'White balance',
                2 => 'Image size',
                3 => 'ISO speed',
                4 => 'Picture style',
                5 => 'Record func. + media/folder',
                6 => 'Menu display',
                7 => 'Image playback',
            },
        },
    ],
    0x0705 => {
        Name => 'ManualTv',
        Description => 'Manual Tv/Av For M',
        PrintConv => {
            0 => 'Tv=Main/Av=Control',
            1 => 'Tv=Control/Av=Main',
        },
    },
    0x0706 => {
        Name => 'DialDirectionTvAv',
        PrintConv => {
            0 => 'Normal',
            1 => 'Reversed',
        },
    },
    0x0707 => {
        Name => 'AvSettingWithoutLens',
        PrintConv => \%disableEnable,
    },
    0x0708 => {
        Name => 'WBMediaImageSizeSetting',
        PrintConv => {
            0 => 'Rear LCD panel',
            1 => 'LCD monitor',
        },
    },
    0x0709 => {
        Name => 'LockMicrophoneButton',
        PrintConv => {
            0 => 'Protect (holding:sound rec.)',
            1 => 'Sound rec. (protect:disable)',
        },
    },
    0x070a => {
        Name => 'ButtonFunctionControlOff',
        PrintConv => {
            0 => 'Normal (enable)',
            1 => 'Disable main, Control, Multi-control',
        },
    },
    0x070b => { # 50D (also, 5DmkII writes this but it isn't in user guide)
        Name => 'AssignFuncButton',
        PrintConv => {
            0 => 'LCD brightness',
            1 => 'Image quality',
            2 => 'Exposure comp./AEB setting',
            3 => 'Image jump with main dial',
            4 => 'Live view function settings',
        },
    },
    #### 4b) Others
    0x080b => [
        {
            Name => 'FocusingScreen',
            Condition => '$$self{Model} =~ /\b(40D|50D)\b/',
            Notes => '40D and 50D',
            PrintConv => {
                0 => 'Ef-A',
                1 => 'Ef-D',
                2 => 'Ef-S',
            },
        },
        {
            Name => 'FocusingScreen',
            Condition => '$$self{Model} =~ /\b5D Mark II\b/',
            Notes => '5D Mark II',
            PrintConv => {
                0 => 'Eg-A',
                1 => 'Eg-D',
                2 => 'Eg-S',
            },
        },
        {
            Name => 'FocusingScreen',
            Notes => '1D Mark III',
            PrintConv => {
                0 => 'Ec-CIV',
                1 => 'Ec-A,B,C,CII,CIII,D,H,I,L',
                2 => 'Ec-S',
                3 => 'Ec-N,R',
            },
        },
    ],
    0x080c => {
        Name => 'TimerLength',
        Count => 4,
        PrintConv => [
            \%disableEnable,
            '"6 s: $val"',
            '"16 s: $val"',
            '"After release: $val"',
        ],
        PrintConvInv => [
            undef,
            '$val=~/(\d+)$/ ? $1 : 0',
            '$val=~/(\d+)$/ ? $1 : 0',
            '$val=~/(\d+)$/ ? $1 : 0',
        ],
    },
    0x080d => {
        Name => 'ShortReleaseTimeLag',
        PrintConv => \%disableEnable,
    },
    0x080e => {
        Name => 'AddAspectRatioInfo',
        PrintConv => {
            0 => 'Off',
            1 => '6:6',
            2 => '3:4',
            3 => '4:5',
            4 => '6:7',
            5 => '10:12',
            6 => '5:7',
        },
    },
    0x080f => {
        Name => 'AddOriginalDecisionData',
        PrintConv => \%offOn,
    },
    0x0810 => {
        Name => 'LiveViewExposureSimulation',
        PrintConv => {
            0 => 'Disable (LCD auto adjust)',
            1 => 'Enable (simulates exposure)',
        },
    },
    0x0811 => {
        Name => 'LCDDisplayAtPowerOn',
        PrintConv => {
            0 => 'Display',
            1 => 'Retain power off status',
        },
    },
);

#------------------------------------------------------------------------------
# Conversion routines
# Inputs: 0) value to convert
sub ConvertPfn($)
{
    my $val = shift;
    return $val ? ($val==1 ? 'On' : "On ($val)") : "Off";
}
sub ConvertPfnInv($)
{
    my $val = shift;
    return $1 if $val =~ /(\d+)/;
    return  1 if $val =~ /on/i;
    return  0 if $val =~ /off/i;
    return undef;
}

#------------------------------------------------------------------------------
# Read/Write Canon custom 2 directory (used by 1D Mark III)
# Inputs: 0) ExifTool object ref, 1) dirInfo ref, 2) tag table ref
# Returns: 1 on success
sub ProcessCanonCustom2($$$)
{
    my ($exifTool, $dirInfo, $tagTablePtr) = @_;
    my $dataPt = $$dirInfo{DataPt};
    my $offset = $$dirInfo{DirStart};
    my $size = $$dirInfo{DirLen};
    my $write = $$dirInfo{Write};
    my $verbose = $exifTool->Options('Verbose');
    my $newTags;

    # first entry in array must be the size
    my $len = Get16u($dataPt, $offset);
    unless ($len == $size and $len >= 8) {
        $exifTool->Warn("Invalid CanonCustom2 data");
        return 0;
    }
    # get group count
    my $count = Get32u($dataPt, $offset + 4);
    if ($write) {
        $newTags = $exifTool->GetNewTagInfoHash($tagTablePtr);
        $exifTool->VPrint(0, "  Rewriting CanonCustom2\n");
    } elsif ($verbose) {
        $exifTool->VerboseDir('CanonCustom2', $count);
    }
    my $pos = $offset + 8;
    my $end = $offset + $size;
    # loop through group records
    for (; $pos<$end; ) {
        last if $pos + 12 > $end;
        my $recNum = Get32u($dataPt, $pos);
        my $recLen = Get32u($dataPt, $pos + 4);
        my $recCount = Get32u($dataPt, $pos + 8);
        last if $recLen < 8;    # must be at least 8 bytes for recNum and recLen
        $pos += 12;
        my $recPos = $pos;
        my $recEnd = $pos + $recLen;
        if ($verbose and not $write) {
            $exifTool->VerboseDir("CanonCustom2 group $recNum", $recCount);
        }
        my ($i, $num, $tag);
        for ($i=0; $recPos + 8 < $recEnd; ++$i, $recPos+=4*$num) {
            $tag = Get32u($dataPt, $recPos);
            $num = Get32u($dataPt, $recPos + 4);
            $recPos += 8;
            last if $recPos + $num * 4 > $recEnd;
            my $val = ReadValue($dataPt, $recPos, 'int32s', $num, $num * 4);
            if ($write) {
                # write new value
                my $tagInfo = $$newTags{$tag};
                next unless $tagInfo;
                my $nvHash = $exifTool->GetNewValueHash($tagInfo);
                next unless Image::ExifTool::IsOverwriting($nvHash, $val);
                my $newVal = Image::ExifTool::GetNewValues($nvHash);
                next unless defined $newVal;    # can't delete from a custom table
                WriteValue($newVal, 'int32s', $num, $dataPt, $recPos);
                $exifTool->VerboseValue("- CanonCustom:$$tagInfo{Name}", $val);
                $exifTool->VerboseValue("+ CanonCustom:$$tagInfo{Name}", $newVal);
                ++$exifTool->{CHANGED};
            } else {
                # extract the value
                my $oldInfo = $$tagTablePtr{$tag};
                $exifTool->HandleTag($tagTablePtr, $tag, $val,
                    Index  => $i,
                    Format => 'int32u',
                    Count  => $num,
                    Size   => $num * 4,
                );
                my $tagInfo = $$tagTablePtr{$tag};
                # generate properly formatted description if we just added the tag
                if ($tagInfo and not $oldInfo) {
                    ($$tagInfo{Description} = $$tagInfo{Name}) =~ tr/_/ /;
                    $$tagInfo{Description} =~ s/CanonCustom Functions/Canon Custom Functions /;
                }
            }
        }
        $pos += $recLen - 8;
    }
    if ($pos != $end) {
        $exifTool->Warn('Possibly corrupted CanonCustom2 data');
        return 0;
    }
    return 1;
}

#------------------------------------------------------------------------------
# Write Canon custom 2 data
# Inputs: 0) ExifTool object reference, 1) dirInfo hash ref, 2) tag table ref
# Returns: New custom data block or undefined on error
sub WriteCanonCustom2($$$)
{
    my ($exifTool, $dirInfo, $tagTablePtr) = @_;
    $exifTool or return 1;    # allow dummy access to autoload this package
    my $dataPt = $$dirInfo{DataPt};
    # edit a copy of the custom function 2 data
    my $buff = substr($$dataPt, $$dirInfo{DirStart}, $$dirInfo{DirLen});
    my %dirInfo = (
        DataPt   => \$buff,
        DirStart => 0,
        DirLen   => $$dirInfo{DirLen},
        Write    => 1,
    );
    ProcessCanonCustom2($exifTool, \%dirInfo, $tagTablePtr) or return undef;
    return $buff;
}

#------------------------------------------------------------------------------
# Process Canon custom directory
# Inputs: 0) ExifTool object ref, 1) dirInfo ref, 2) tag table ref
# Returns: 1 on success
sub ProcessCanonCustom($$$)
{
    my ($exifTool, $dirInfo, $tagTablePtr) = @_;
    my $dataPt = $$dirInfo{DataPt};
    my $offset = $$dirInfo{DirStart};
    my $size = $$dirInfo{DirLen};
    my $verbose = $exifTool->Options('Verbose');

    # first entry in array must be the size
    my $len = Get16u($dataPt,$offset);
    unless ($len == $size or ($$exifTool{Model}=~/\bD60\b/ and $len+2 == $size)) {
        $exifTool->Warn("Invalid CanonCustom data");
        return 0;
    }
    $verbose and $exifTool->VerboseDir('CanonCustom', $size/2-1);
    my $pos;
    for ($pos=2; $pos<$size; $pos+=2) {
        # ($pos is position within custom directory)
        my $val = Get16u($dataPt,$offset+$pos);
        my $tag = ($val >> 8);
        $val = ($val & 0xff);
        $exifTool->HandleTag($tagTablePtr, $tag, $val,
            Index  => $pos/2-1,
            Format => 'int8u',
            Count  => 1,
            Size   => 1,
        );
    }
    return 1;
}

#------------------------------------------------------------------------------
# Check new value for Canon custom data block
# Inputs: 0) ExifTool object reference, 1) tagInfo hash ref, 2) raw value ref
# Returns: error string or undef (and may modify value) on success
sub CheckCanonCustom($$$)
{
    my ($exifTool, $tagInfo, $valPtr) = @_;
    return Image::ExifTool::CheckValue($valPtr, 'int8u');
}

#------------------------------------------------------------------------------
# Write Canon custom data
# Inputs: 0) ExifTool object reference, 1) dirInfo hash ref, 2) tag table ref
# Returns: New custom data block or undefined on error
sub WriteCanonCustom($$$)
{
    my ($exifTool, $dirInfo, $tagTablePtr) = @_;
    $exifTool or return 1;    # allow dummy access to autoload this package
    my $dataPt = $$dirInfo{DataPt};
    my $dirStart = $$dirInfo{DirStart} || 0;
    my $dirLen = $$dirInfo{DirLen} || length($$dataPt) - $dirStart;
    my $dirName = $$dirInfo{DirName};
    my $verbose = $exifTool->Options('Verbose');
    my $newData = substr($$dataPt, $dirStart, $dirLen) or return undef;
    $dataPt = \$newData;

    # first entry in array must be the size
    my $len = Get16u($dataPt, 0);
    unless ($len == $dirLen or ($$exifTool{Model}=~/\bD60\b/ and $len+2 == $dirLen)) {
        $exifTool->Warn("Invalid CanonCustom data");
        return undef;
    }
    my $newTags = $exifTool->GetNewTagInfoHash($tagTablePtr);
    my $pos;
    for ($pos=2; $pos<$dirLen; $pos+=2) {
        my $val = Get16u($dataPt, $pos);
        my $tag = ($val >> 8);
        my $tagInfo = $$newTags{$tag};
        next unless $tagInfo;
        my $nvHash = $exifTool->GetNewValueHash($tagInfo);
        $val = ($val & 0xff);
        next unless Image::ExifTool::IsOverwriting($nvHash, $val);
        my $newVal = Image::ExifTool::GetNewValues($nvHash);
        next unless defined $newVal;    # can't delete from a custom table
        Set16u(($newVal & 0xff) + ($tag << 8), $dataPt, $pos);
        $exifTool->VerboseValue("- $dirName:$$tagInfo{Name}", $val);
        $exifTool->VerboseValue("+ $dirName:$$tagInfo{Name}", $newVal);
        ++$exifTool->{CHANGED};
    }
    return $newData;
}


1;  # end

__END__

=head1 NAME

Image::ExifTool::CanonCustom - Read and Write Canon custom functions

=head1 SYNOPSIS

This module is loaded automatically by Image::ExifTool when required.

=head1 DESCRIPTION

The Canon custom functions meta information is very specific to the
camera model, and is found in both the EXIF maker notes and in the
Canon RAW files.  This module contains the definitions necessary for
Image::ExifTool to read this information.

=head1 AUTHOR

Copyright 2003-2009, Phil Harvey (phil at owl.phy.queensu.ca)

This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.

=head1 REFERENCES

=over 4

=item L<http://park2.wakwak.com/~tsuruzoh/Computer/Digicams/exif-e.html>

=back

=head1 ACKNOWLEDGEMENTS

Thanks to Christian Koller for his work in decoding the 20D custom
functions, Rainer Honle for decoding the 5D custom functions and David
Pitcher for adding a few undocumented 1DmkIII settings.

=head1 SEE ALSO

L<Image::ExifTool::TagNames/Canon Tags>,
L<Image::ExifTool(3pm)|Image::ExifTool>

=cut