2.2.0 and equalizer

[spider58]

Hello. Im using Libvlc 2.2.0 which downloaded from nightly builds.

is there any code sample for change equalizer frequency values (libvlc 2.2.0)

Im implemented DLL equalizer functions to my project but i dont know how can i change equalizer.

Thanks for relations.

[Jean-Baptiste Kempf]

Look at the Android code.

[spider58]

Look at the Android code.

Thanks for relations. but if your mean is https://forum.videolan.org/viewforum.php?f=35 im already look here. But nothing found. really sorry for inconvenience

[spider58]

Hello again. Here is part of my code

FORM SIDE
Button_click

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dim myeq as new equalizer player.seteq = myeq

WRAPPER SIDE FUNCTION

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<dllImport("libvlc",Callingconvention:=CallingConvention.Cdecl)>_ Public Shared Function libvlc_media_player_set_equalizer(Byval player as intptr, p_equalizer as intptr) End Function

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Public Property seteq() as Equalizer Get return nothing End Get Set (Byval value as Equalizer) libvlc.libvlc_media_player_set_equalizer(player.handle, value.handle) End Set end function

WHEN i pressed button returns error message

Pinvoke restriction: cannot return variants

[sherington]

There is an example in the VLC test sources:

http://git.videolan.org/?p=vlc.git;a=bl ... f4;hb=HEAD

This test code shows how to get presets, get/set individual frequency values, and enable/disable the equalizer on a media player.

Convert that to whatever language you're using.

[spider58]

There is an example in the VLC test sources:

http://git.videolan.org/?p=vlc.git;a=bl ... f4;hb=HEAD

This test code shows how to get presets, get/set individual frequency values, and enable/disable the equalizer on a media player.

Convert that to whatever language you're using.

thank you sir. I will try now.

[spider58]

There is an example in the VLC test sources:

http://git.videolan.org/?p=vlc.git;a=bl ... f4;hb=HEAD

This test code shows how to get presets, get/set individual frequency values, and enable/disable the equalizer on a media player.

Convert that to whatever language you're using.

hmm. cannot convert all of code. But tried somethings

preset count is returning 18 and in this code

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For i As UInteger = 0 To u_presets - 1 assert(Nothing IsNot libvlc_audio_equalizer_get_preset_name(i)) equalizer = libvlc_audio_equalizer_new_from_preset(i) assert(equalizer) libvlc_audio_equalizer_release(equalizer) Next i

equalizer = libvlc_audio_equalizer_new_from_preset(i)
im getting same error on this line

Pinvoke restriction: cannot return variants

what assert code mean in Vb.NET i dont know. I cant apply assert code

[spider58]

maybe C# code is much easy than C for convert

[mangokm40]

equalizer = libvlc_audio_equalizer_new_from_preset(i)
im getting same error on this line

Pinvoke restriction: cannot return variants

============================================================

Hope I don't waste your time with this, but....

If you're declaration looks like this:
"Public Shared Function libvlc_media_player_set_equalizer(Byval player as intptr, p_equalizer as intptr)"

The First link that Google returns for your error message suggests you do this:
"Public Shared Function libvlc_media_player_set_equalizer(Byval player as intptr, p_equalizer as intptr) as integer"

The link is here:
http://social.msdn.microsoft.com/Forums ... sexpressvb

[spider58]

equalizer = libvlc_audio_equalizer_new_from_preset(i)
im getting same error on this line

Pinvoke restriction: cannot return variants

============================================================

Hope I don't waste your time with this, but....

If you're declaration looks like this:
"Public Shared Function libvlc_media_player_set_equalizer(Byval player as intptr, p_equalizer as intptr)"

The First link that Google returns for your error message suggests you do this:
"Public Shared Function libvlc_media_player_set_equalizer(Byval player as intptr, p_equalizer as intptr) as integer"

The link is here:
http://social.msdn.microsoft.com/Forums ... sexpressvb

yeah thanks fo reply. im already found solution but i cannot reply here because i had no time

All functions must has return type. That's my mistake.

Now equalizer working good. thanks

[spider58]

hello again. i know i said "problem solved" but i can't changing equalizer amplitude.

WAY 1

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dim eq as new equalizer eq.Bands(0).Amplitude = 2.3F eq.Bands(1).Amplitude = 3.1F . . . eq.Bands(9).Amplitude = -4.5F libvlc.libvlc_media_player_set_equalizer(Player_handle,Nothing) libvlc.libvlc_media_player_set_equalizer(Player_handle,eq)

WAY 2

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dim eq as new equalizer libvlc.libvlc_audio_equalizer_set_amp_at_index(eq.handle,2.3F,0) libvlc.libvlc_audio_equalizer_set_amp_at_index(eq.handle,3.1F,1) . . . libvlc.libvlc_audio_equalizer_set_amp_at_index(eq.handle,-4.5F,9) libvlc.libvlc_media_player_set_equalizer(Player_handle,Nothing) libvlc.libvlc_media_player_set_equalizer(Player_handle,eq)

Anyway amplitute values of 10 bands returns 0

what im doing wrong ?

Best regards

[spider58]

pff. this problem is annoying me

i think all my code good.

Always all amplitudes for all bands is being 0

[spider58]

sorry for bumping but i want to know my coding is true or not.

[spider58]

Thanks for relations. problem solved. was my fault.