Re: [Csnd-dev] CsoundAndroid getChannel problem

Hi,

I came back to this project and had strange findings:

With CsoundAndroid 6.18  it does not matter - if I both set or do not set
USE_DOUBLE -  MYFLT is always set to double and the results of all get
functions, like   Csound->GetSr(), Csound->GetChannel()  are wrong (giving
extremely small values).

With CsoundAndroid 6.12, when i do not set USE_DOUBLE then MYFLT stands for
float and the return values are correct.

This problem happens only with the android, build on Desktop it is always
right. I am testing it on a Samsung S9+ device, arm64 architecture, I use
the arm64-v64 libraries to link the app against to:

  LIBS +=
 -L/home/tarmo/src/csound-android-6.12.0/CsoundForAndroid/CsoundAndroid/src/main/jniLibs/arm64-v8a/
-lcsoundandroid -lsndfile -lc++_shared
(or the ones for csound-android-6.18.0 for the other build).

Does it make any sense?

How can I force MYFLT to be float? With Csound 6.18 just non defining
USE_DOUBLE is not enough.


Thanks!
tarmo


Kontakt Steven Yi (<[email protected]>) kirjutas kuupäeval R, 8. september
2023 kell 01:34:

> Only thing I can think of from the top of my head is checking if
> USE_DOUBLE is set correctly.
>
> On Thu, Sep 7, 2023 at 4:58 PM Tarmo Johannes <[email protected]> wrote:
>
>> Hi!
>>
>> It is probably hard to guess but does anyone have a clue?
>>
>> I am working on a Qt based Csound project that I want to make work on
>> both desktop and Android. I use the Csound API via C++ (thus no Java),
>> including AndroidCsound.hpp and linking against the -lcsoundandroid
>> -lsndfile -lc++_shared libraries.  CsoundAndroid is  from official
>> Csound downloads:
>>
>> https://github.com/csound/csound/releases/download/6.18.0/csound-android-6.18.0.zip
>>
>> Everything works fine but I discovered Csound->GetChannel is
>> malfunctioning  - it return always a very small number as if reading from
>> some wrong place in the memory. No error messages.
>> On desktop it works as expected.
>>
>> I remembered to have GetChannel functioning correctly in the past, I
>> built the app with csound-android-6.12.0 (that used to work) and everything
>> was correct.
>>
>> I tried to make a build with 6.16 and 6.17 to figure out when the change
>> can have happened but these builds caused some runtime errors (dlopen
>> failed: cannot locate symbol "__emutls_get_address") and I gave up.
>>
>> If it of any help, the project is up on:
>> https://github.com/tarmoj/harmonicsPractice/
>>
>> In this case it is fine for me to stick with 6.12 but would be better to
>> figure out, where is the reason.
>>
>> Do you have any idea?
>>
>> Thanks!
>> tarmo
>>
>