[BUG] audio_rttl application fails to compile

[linguini1]

Description / Steps to reproduce the issue

Enable the audio_rttl application in Kconfig and build.

./audio_rttl.cxx:31:10: fatal error: arch/chip/audio.h: No such file or directory
   31 | #include <arch/chip/audio.h>
      |          ^~~~~~~~~~~~~~~~~~~
compilation terminated.
ERROR: aarch64-none-elf-g++ failed: 1
       command: aarch64-none-elf-g++ -MT ./audio_rttl.cxx.home.linguini.coding.nuttx-space.apps.examples.audio_rttl.o  -M '-D_LDBL_EQ_DBL' '-fno-common' '-Wall' '-Wshadow' '-Wundef' '-Wno-attributes' '-Wno-unknown-pragmas' '-nostdinc++' '-Wno-psabi' '-std=gnu++17' '-fno-exceptions' '-fcheck-new' '-fno-rtti' '-Os' '-fno-strict-aliasing' '-fomit-frame-pointer' '-ffunction-sections' '-fdata-sections' '-g' '-march=armv8-a' '-isystem' '/home/linguini/coding/nuttx-space/nuttx/include/cxx' '-isystem' '/home/linguini/coding/nuttx-space/nuttx/include' '-D__NuttX__' '-D__KERNEL__' '-pipe' '-I' '/home/linguini/coding/nuttx-space/apps/include' ./audio_rttl.cxx
audio_rttl.cxx:31:10: fatal error: arch/chip/audio.h: No such file or directory
   31 | #include <arch/chip/audio.h>
      |          ^~~~~~~~~~~~~~~~~~~
compilation terminated.

On which OS does this issue occur?

[OS: Linux]

What is the version of your OS?

Arch Linux

NuttX Version

master

Issue Architecture

[Arch: all]

Issue Area

[Area: Examples]

Host information

No response

Verification

• I have verified before submitting the report.

[linguini1]

This example also seems to rely on board_audio_* functions which are only implemented by one board and probably shouldn't be accessed from user space. It would be better to adjust this example entirely so it can run on any board with audio output.

[cederom]

Yes, there are two rttl players but none of them useful out-of-the-box:

• https://github.com/apache/nuttx-apps/tree/master/examples/audio_rttl
• https://github.com/apache/nuttx-apps/tree/master/audioutils/rtttl-c