On 14/11/2011 13:03, Romain Beauxis wrote:
> 2011/11/14 Henry Favretto:
>> Hi there,
>
> Hi Henry!
>
>> I recently migrated my old script from 0.9.3 to 1.0.0 running on my trusty
>> old
>> Debian Lenny box without much trouble except for one rather subtle issue
>> regarding the smart_crossfade utility function...
>>
>> In my script I use it this way:
>>
>> ************************
>> # Crossfade songs 15 seconds
>> fade.out = fade.out(type="sin",duration=15.0)
>> fade.in = fade.in(type="sin",duration=10.0)
>> add = fun (a,b) -> add(normalize=false,[b, a])
>> radio = smart_crossfade(
>> fade_out = 15.0,
>> fade_in = 10.0,
>> start_next = 25.0,
>> margin = 3.0,
>> high = -15.0,
>> medium = -30.0,
>> conservative = true,
>> default = fun (a,b) -> add(fade.out(a),fade.in(b)),
>> radio
>> )
>> ************************
>>
>> I noticed (by listening to the stream and looking at the log) that for some
>> reason my provided default transition is never applied e.g. when "No
>> transition.
>> Using default" is logged then the sequence transition is still used (the
>> function's default).
>>
>> IIRC the same script used to work as expected in 0.9.3 e.g. using a crossfade
>> when the default transition is applied...
>>
>> Did I miss something?
>
> There is a subtle detail with add() that could explain your issue or
> at least needs a fix.
> By default, add([a,b,c,d]) relays metadata and track limits of the
> first source, a in this example.
>
> Thus, on your script, you should write:
> default = fun (a,b) -> add([fade.in(b),fade.out(a)]) (by the way,
> did you miss the [ ] in your example?)
> since you want metadata and track limit from the new source (b).
>
> Please, try this and let us know if your issue is still not fixed :-)
>
> Romain
Hi Romain,
Indeed, I guess I must have missed those brackets.... my bad.
Okay, so I did your proposed changes but now it gives me the following error:
*************
At line 46, char 33-56:
this value has type
[_]
but it should be a subtype of (the type of the value at line 37, char 13)
source(_) (infered at line 37, char 42)
*************
where line 46 in my script is
default = fun (a,b) -> add([fade.in(b),fade.out(a)])
and line 37 is
add = fun (a,b) -> add(normalize=false,[b, a])
Any idea what's wrong here?
Henry
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