FLsavesnap
FLsavesnap — Saves all snapshots currently created into a file.
Description
Plugin opcode in widgets. This opcode is part of the plugin repository and has to be installed separately. These FLTK widgets do not work on the Mac. The plugin repository can be found here: https://github.com/csound/plugins
FLsavesnap saves all snapshots currently created (i.e. the entire memory bank) into a file.
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]](images/note.png)
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Note |
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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. Play FLsavesnap_simple.csd
Example 328. 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. Play FLsavesnap.csd
Example 329. 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>