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112 lines
4 KiB
Plaintext
112 lines
4 KiB
Plaintext
{{DISPLAYTITLE:_SNDOPEN}}
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The [[_SNDOPEN]] function loads a sound file into memory and returns a [[LONG]] handle value above 0.
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{{PageSyntax}}
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: {{Parameter|soundHandle&}} = [[_SNDOPEN]]({{Parameter|fileName$}})
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{{PageDescription}}
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* Returns a [[LONG]] {{Parameter|soundHandle&}} value to the sound file in memory. '''A zero value means the sound could not be loaded.'''
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* The literal or variable [[STRING]] sound {{Parameter|fileName$}} can be '''WAV, OGG or MP3''' file types.
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* '''Always check the handle value returned is greater than zero before attempting to play the sound.'''
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* The handle can be used by most of the _SND sound playing functions and statements in QB64 except [[_SNDPLAYFILE]] which plays a sound file directly from the disk and does not use a handle value.
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* Handles can be closed with [[_SNDCLOSE]] when the sound is no longer necessary.
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* If a WAV sound file won't play, try it using the Windows [[Windows_Libraries#Play_WAV_Sounds|Play WAV sounds library]] to check it or convert the sound file to OGG.
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{{PageExamples}}
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''Snippet 1:'' Loading a sound file to use in the program later. Only load it once and use the handle any time you want.
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{{CodeStart}}
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h& = {{Cl|_SNDOPEN}}("dog.wav")
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IF h& = 0 THEN BEEP ELSE {{Cl|_SNDPLAY}} h& 'check for valid handle before using!
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{{CodeEnd}}
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''Snippet 2:'' Playing a sound from 2 different speakers based on program results.
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{{CodeStart}} '' ''
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Laff& = {{Cl|_SNDOPEN}}("KONGlaff.ogg") 'load sound file and get LONG handle value
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{{Cl|IF}} LaffX! < -1 {{Cl|THEN}} LaffX! = -1 'set full volume to left speaker
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{{Cl|IF}} LaffX! > 1 {{Cl|THEN}} LaffX! = 1 'set full volume to right speaker
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{{Cl|_SNDBAL}} Laff&, LaffX! 'balance sound to left or right speaker
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{{Cl|_SNDPLAY}} Laff& 'play sound '' ''
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{{CodeEnd}}
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''Example:'' Playing a file and controlling playback:
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{{CodeStart}}
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s& = {{Cl|_SNDOPEN}}("song.ogg")
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{{Cl|PRINT}} "{{Cl|READ}}Y"; s&
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{{Cl|_SNDPLAY}} s&
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{{Cl|_SNDLOOP}} s&
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xleft = -1
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xright = 1
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DO
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k$ = {{Cl|INKEY$}}
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{{Cl|SELECT CASE}} k$
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{{Cl|CASE}} "f"
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xleft = xleft - 0.1
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{{Cl|_SNDBAL}} s&, xleft, , , 1
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{{Cl|CASE}} "g"
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xleft = xleft + 0.1
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{{Cl|_SNDBAL}} s&, xleft, , , 1
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{{Cl|CASE}} "h"
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xright = xright - 0.1
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{{Cl|_SNDBAL}} s&, xright, , , 2
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{{Cl|CASE}} "j"
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xright = xright + 0.1
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{{Cl|_SNDBAL}} s&, xright, , , 2
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{{Cl|CASE}} "n"
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volume = volume - 0.1
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{{Cl|_SNDVOL}} s&, volume
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{{Cl|CASE}} "m"
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volume = volume + 0.1
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{{Cl|_SNDVOL}} s&, volume
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{{Cl|CASE}} "p"
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{{Cl|_SNDPAUSE}} s&
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{{Cl|CASE}} " "
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{{Cl|_SNDPLAY}} s&
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{{Cl|CASE}} "i"
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{{Cl|PRINT}} {{Cl|_SNDPLAYING}}(s&)
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{{Cl|PRINT}} {{Cl|_SNDPAUSED}}(s&)
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{{Cl|SLEEP}}
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{{Cl|CASE}} "b"
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{{Cl|_SNDSETPOS}} s&, 110
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{{Cl|CASE}} "l"
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{{Cl|_SNDLIMIT}} s&, 10
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{{Cl|PRINT}} "LIM"
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{{Cl|SLEEP}}
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{{Cl|CASE}} "k"
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{{Cl|_SNDSTOP}} s&
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{{Cl|CASE}} "c"
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{{Cl|_SNDCLOSE}} s&
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{{Cl|SLEEP}}
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s2& = {{Cl|_SNDOPEN}}("song.ogg")
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{{Cl|CASE}} "d"
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s2& = {{Cl|_SNDCOPY}}(s&)
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{{Cl|_SNDPLAY}} s2&
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{{Cl|END SELECT}}
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{{Cl|LOCATE}} 1, 1
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{{Cl|PRINT}} xleft, xright, volume, {{Cl|_SNDGETPOS}}(s&); " "
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LOOP
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{{CodeEnd}}{{small|Code by Johny B}}
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{{PageSeeAlso}}
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* [[_SNDCLOSE]], [[_SNDPLAY]], [[_SNDSTOP]]
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* [[_SNDPAUSE]], [[_SNDLOOP]], [[_SNDLIMIT]]
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* [[_SNDSETPOS]], [[_SNDGETPOS]]
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* [[_SNDPLAYING]], [[_SNDPAUSED]]
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* [[_SNDCOPY]], [[_SNDPLAYCOPY]]
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* [[_SNDBAL]], [[_SNDLEN]], [[_SNDVOL]]
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* [[_SNDPLAYFILE]] {{text|(plays a named sound file directly and closes)}}
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* [[_SNDRAW]], [[_SNDRATE]], [[_SNDRAWLEN]] {{text|(raw sounds without files)}}
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{{PageNavigation}}
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