FLsavesnap
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## FLsavesnap

FLsavesnap — Saves all snapshots currently created into a file.

## Description

FLsavesnap saves all snapshots currently created (i.e. the entire memory bank) into a file.

## Syntax

    FLsavesnap "filename" [, igroup]

## Initialization

“filename” -- a double-quoted string corresponding to a file to store a bank of snapshots.

igroup -- (optional) an integer number referring to a snapshot-related group of widget. It allows to get/set, or to load/save the state of a subset of valuators. Default value is zero that refers to the first group. The group number is determined by the opcode FLsetSnapGroup.

| Note
The igroup parameter has not been yet fully implemented in the current version of csound. Please do not rely on it yet.

## Performance

FLsavesnap saves all snapshots currently created (i.e. the entire memory bank) into a file whose name is filename. Since the file is a text file, snapshot values can also be edited manually by means of a text editor. The format of the data stored in the file is the following (at present time, this could be changed in next Csound version):

    ----------- 0 -----------
    FLvalue 0 0 1 0 ""
    FLvalue 0 0 1 0 ""
    FLvalue 0 0 1 0 ""
    FLslider 331.946 80 5000 -1 "frequency of the first oscillator"
    FLslider 385.923 80 5000 -1 "frequency of the second oscillator"
    FLslider 80 80 5000 -1 "frequency of the third oscillator"
    FLcount 0 0 10 0 "this index must point to the location number where snapshot is stored"
    FLbutton 0 0 1 0 "Store snapshot to current index"
    FLbutton 0 0 1 0 "Save snapshot bank to disk"
    FLbutton 0 0 1 0 "Load snapshot bank from disk"
    FLbox 0 0 1 0 ""
    ----------- 1 -----------
    FLvalue 0 0 1 0 ""
    FLvalue 0 0 1 0 ""
    FLvalue 0 0 1 0 ""
    FLslider 819.72 80 5000 -1 "frequency of the first oscillator"
    FLslider 385.923 80 5000 -1 "frequency of the second oscillator"
    FLslider 80 80 5000 -1 "frequency of the third oscillator"
    FLcount 1 0 10 0 "this index must point to the location number where snapshot is stored"
    FLbutton 0 0 1 0 "Store snapshot to current index"
    FLbutton 0 0 1 0 "Save snapshot bank to disk"
    FLbutton 0 0 1 0 "Load snapshot bank from disk"
    FLbox 0 0 1 0 ""
    ----------- 2 -----------
    ..... etc...
    ----------- 3 -----------
    ..... etc...
    ---------------------------

As you can see, each snapshot contain several lines. Each snapshot is separated from previous and next snapshot by a line of this kind:

"----------- snapshot Num -----------"

Then there are several lines containing data. Each of these lines corresponds to a widget.

The first field of each line is an unquoted string containing opcode name corresponding to that widget. Second field is a number that expresses current value of a snapshot. In current version, this is the only field that can be modified manually. The third and fourth fields shows minimum and maximum values allowed for that valuator. The fifth field is a special number that indicates if the valuator is linear (value 0), exponential (value -1), or is indexed by a table interpolating values (negative table numbers) or non-interpolating (positive table numbers). The last field is a quoted string with the label of the widget. Last line of the file is always

"---------------------------"

.

Note that FLvalue andFLbox are not valuators and their values are fixed, so they cannot be modified.

For purposes of snapshot saving, widgets can be grouped, so that snapshots affect only a defined group of widgets. The opcode FLsetSnapGroup is used to specify the group for all widgets declared after it, until the next FLsetSnapGroup statement.

## Examples

Here is a simple example of the FLTK snapshot saving. It uses the file FLsavesnap_simple.csd.

Example 318. Example of FLTK snapshot saving.

See the sections Real-time Audio and Command Line Flags for more information on using command line flags.

    <CsoundSynthesizer>
    <CsOptions>
    ; Select audio/midi flags here according to platform
    ; Audio out   Audio in
    -odac           -iadc    ;;;RT audio I/O
    </CsOptions>
    <CsInstruments>

    sr=48000
    ksmps=128
    nchnls=2

    ; Example by Hector Centeno and Andres Cabrera 2007

    ; giSWMtab4 ftgen 0, 0, 513, 21, 10, 1, .3
    ; giSWMtab4M ftgen 0, 0, 64, 7, 1, 50, 1

    FLpanel	"Snapshots", 530, 190, 40, 410, 3
        FLcolor  100, 118 ,140
        ivalSM1		 	FLvalue  "", 70, 20, 270, 20
        gksliderA, gislidSM1 	FLslider "Slider", -4, 4, 0, 3, ivalSM1, 250, 20, 20, 20
        itext1		 FLbox	  "store", 1, 1, 14, 50, 25, 355, 15
        itext2		 FLbox	  "load", 1, 1, 14, 50, 25, 415, 15
        gksnap, ibuttn1	 FLbutton "1", 1, 0, 11, 25, 25, 364, 45, 0, 3, 0, 3, 1
        gksnap, ibuttn2	 FLbutton "2", 1, 0, 11, 25, 25, 364, 75, 0, 3, 0, 3, 2
        gksnap, ibuttn3	 FLbutton "3", 1, 0, 11, 25, 25, 364, 105, 0, 3, 0, 3, 3
        gksnap, ibuttn4	 FLbutton "4", 1, 0, 11, 25, 25, 364, 135, 0, 3, 0, 3, 4

        gkload, ibuttn1	 FLbutton "1", 1, 0, 11, 25, 25, 424, 45, 0, 4, 0, 3, 1
        gkload, ibuttn2	 FLbutton "2", 1, 0, 11, 25, 25, 424, 75, 0, 4, 0, 3, 2
        gkload, ibuttn3	 FLbutton "3", 1, 0, 11, 25, 25, 424, 105, 0, 4, 0, 3, 3
        gkload, ibuttn4	 FLbutton "4", 1, 0, 11, 25, 25, 424, 135, 0, 4, 0, 3, 4

        ivalSM2		 	FLvalue  "", 70, 20, 270, 80
        gkknobA, gislidSM2 	FLknob "Knob", -4, 4, 0, 3, ivalSM2, 60, 120, 60
    FLpanelEnd
    FLsetVal_i 1, gislidSM1
    FLsetVal_i 1, gislidSM2
    FLrun

    	instr 1

    	endin

    instr 3 ; Save snapshot
    index init 0
    ipstno = p4
    Sfile sprintf "snapshot_simple.%d.snap", ipstno

    inumsnap, inumval  FLsetsnap index ;, -1, igroup
    FLsavesnap Sfile

    	endin

    instr 4 ;Load snapshot
    index init 0
    ipstno = p4
    Sfile sprintf "snapshot_simple.%d.snap", ipstno

    FLloadsnap Sfile
    inumload FLgetsnap index ;, igroup

    	endin

    </CsInstruments>

    <CsScore>
    f 0 3600

    e

    </CsScore>

    </CsoundSynthesizer>

Here is another example of FLTK snapshot saving using snapshot groups. It uses the file FLsavesnap.csd.

Example 319. Example of FLTK snapshot saving using snapshot groups.

See the sections Real-time Audio and Command Line Flags for more information on using command line flags.

    <CsoundSynthesizer>
    <CsOptions>
    ; Select audio/midi flags here according to platform
    ; Audio out   Audio in
    -odac           -iadc    ;;;RT audio I/O
    </CsOptions>
    <CsInstruments>

    sr=48000
    ksmps=128
    nchnls=2

    ; Example by Hector Centeno and Andres Cabrera 2007

    ; giSWMtab4 ftgen 0, 0, 513, 21, 10, 1, .3
    ; giSWMtab4M ftgen 0, 0, 64, 7, 1, 50, 1

    FLpanel	"Snapshots", 530, 350, 40, 410, 3
        FLcolor  100, 118 ,140
       FLsetSnapGroup  0
        ivalSM1		 	FLvalue  "", 70, 20, 270, 20
        ivalSM2			FLvalue  "", 70, 20, 270, 60
        ivalSM3			FLvalue  "", 70, 20, 270, 100
        ivalSM4			FLvalue  "", 70, 20, 270, 140
        gksliderA, gislidSM1 	FLslider "Slider A", -4, 4, 0, 3, ivalSM1, 250, 20, 20, 20
        gksliderB, gislidSM2 	FLslider "Slider B", 1, 10, 0, 3, ivalSM2, 250, 20, 20, 60
        gksliderC, gislidSM3 	FLslider "Slider C", 0, 1, 0, 3, ivalSM3, 250, 20, 20, 100
        gksliderD, gislidSM4 	FLslider "Slider D", 0, 1, 0, 3, ivalSM4, 250, 20, 20, 140
        itext1		 FLbox	  "store", 1, 1, 14, 50, 25, 355, 15
        itext2		 FLbox	  "load", 1, 1, 14, 50, 25, 415, 15
        itext3		 FLbox	  "Group 1", 1, 1, 14, 30, 145, 485, 15
        gksnap, ibuttn1	 FLbutton "1", 1, 0, 11, 25, 25, 364, 45, 0, 3, 0, 3, 1
        gksnap, ibuttn2	 FLbutton "2", 1, 0, 11, 25, 25, 364, 75, 0, 3, 0, 3, 2
        gksnap, ibuttn3	 FLbutton "3", 1, 0, 11, 25, 25, 364, 105, 0, 3, 0, 3, 3
        gksnap, ibuttn4	 FLbutton "4", 1, 0, 11, 25, 25, 364, 135, 0, 3, 0, 3, 4
        gkload, ibuttn1	 FLbutton "1", 1, 0, 11, 25, 25, 424, 45, 0, 4, 0, 3, 1
        gkload, ibuttn2	 FLbutton "2", 1, 0, 11, 25, 25, 424, 75, 0, 4, 0, 3, 2
        gkload, ibuttn3	 FLbutton "3", 1, 0, 11, 25, 25, 424, 105, 0, 4, 0, 3, 3
        gkload, ibuttn4	 FLbutton "4", 1, 0, 11, 25, 25, 424, 135, 0, 4, 0, 3, 4

        FLcolor  100, 140 ,118
       FLsetSnapGroup  1
        ivalSM5		 	FLvalue  "", 70, 20, 270, 190
        ivalSM6			FLvalue  "", 70, 20, 270, 230
        ivalSM7			FLvalue  "", 70, 20, 270, 270
        ivalSM8			FLvalue  "", 70, 20, 270, 310
        gkknobA, gislidSM5 	FLknob "Knob A", -4, 4, 0, 3, ivalSM5, 45, 10, 230
        gkknobB, gislidSM6 	FLknob "Knob B", 1, 10, 0, 3, ivalSM6, 45, 75, 230
        gkknobC, gislidSM7 	FLknob "Knob C", 0, 1, 0, 3, ivalSM7, 45, 140, 230
        gkknobD, gislidSM8 	FLknob "Knob D", 0, 1, 0, 3, ivalSM8, 45, 205, 230
        itext4		 FLbox	  "store", 1, 1, 14, 50, 25, 355, 185
        itext5		 FLbox	  "load", 1, 1, 14, 50, 25, 415, 185
        itext6		 FLbox	  "Group 2", 1, 1, 14, 30, 145, 485, 185
        gksnap, ibuttn1	 FLbutton "5", 1, 0, 11, 25, 25, 364, 215, 0, 3, 0, 3, 5
        gksnap, ibuttn2	 FLbutton "6", 1, 0, 11, 25, 25, 364, 245, 0, 3, 0, 3, 6
        gksnap, ibuttn3	 FLbutton "7", 1, 0, 11, 25, 25, 364, 275, 0, 3, 0, 3, 7
        gksnap, ibuttn4	 FLbutton "8", 1, 0, 11, 25, 25, 364, 305, 0, 3, 0, 3, 8
        gkload, ibuttn1	 FLbutton "5", 1, 0, 11, 25, 25, 424, 215, 0, 4, 0, 3, 5
        gkload, ibuttn2	 FLbutton "6", 1, 0, 11, 25, 25, 424, 245, 0, 4, 0, 3, 6
        gkload, ibuttn3	 FLbutton "7", 1, 0, 11, 25, 25, 424, 275, 0, 4, 0, 3, 7
        gkload, ibuttn4	 FLbutton "8", 1, 0, 11, 25, 25, 424, 305, 0, 4, 0, 3, 8
    FLpanelEnd
    FLsetVal_i 1, gislidSM1
    FLsetVal_i 1, gislidSM2
    FLsetVal_i 0, gislidSM3
    FLsetVal_i 0, gislidSM4
    FLsetVal_i 1, gislidSM5
    FLsetVal_i 1, gislidSM6
    FLsetVal_i 0, gislidSM7
    FLsetVal_i 0, gislidSM8
    FLrun

    	instr 1

    	endin

    instr 3 ; Save snapshot
    index init 0
    ipstno = p4
    igroup = 0
    Sfile sprintf "PVCsynth.%d.snap", ipstno
    if ipstno > 4 then
      igroup = 1
    endif

      inumsnap, inumval  FLsetsnap index , -1, igroup
    FLsavesnap Sfile

    	endin

    instr 4 ;Load snapshot
    index init 0
    ipstno = p4
    igroup = 0
    Sfile sprintf "PVCsynth.%d.snap", ipstno
    if ipstno > 4 then
      igroup = 1
    endif

    FLloadsnap Sfile
      inumload FLgetsnap index , igroup

    	endin

    </CsInstruments>

    <CsScore>
      ;Dummy table for FLgetsnap
    ; f 1 0 1024 10 1
    f 0 3600

    e

    </CsScore>

    </CsoundSynthesizer>

## See Also

FLgetsnap, FLloadsnap, FLsetSnapGroup, FLrun, FLsetsnap, FLupdate

## Credits

Author: Gabriel Maldonado

New in version 4.22

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