Re: [Qemu-devel] [PATCH v2 00/24] Audio: Mixeng-free 5.1/7.1 audio support

[Gerd Hoffmann]

On Sun, Sep 08, 2019 at 11:22:00PM +0200, Kővágó, Zoltán wrote:
> Hi,
> 
> This is the v2 of my patch series that makes mixeng optional and enables
> more than two audio channels.
> 
> Changes from v1:
> 
> * renamed "mixeng" option to "mixing-engine"
> * dropped patch "audio: remove hw->samples, buffer_size_in/out pcm_ops"

What is the testing status of this?

I've tried (quick playback smoke test):
  - pa -- works
  - alsa -- works.
  - oss -- not working on linux (also in master), probably lack of
    support in the linux kernel, should be testing with bsd.
  - spice -- broken (see below), master works fine.
  - sdl -- not working: "audio: Failed to create voice `adc'" (also in
    master).

What about windows+macos?

cheers,
  Gerd

spice:

qemu-system-x86_64: /home/kraxel/projects/qemu/audio/spiceaudio.c:143:
line_out_put_buffer: Assertion `buf == out->frame + out->fpos &&
out->fpos <= out->fsize' failed.

#0  0x00007f55ac24d377 in raise () at /lib64/libc.so.6
#1  0x00007f55ac24ea68 in abort () at /lib64/libc.so.6
#2  0x00007f55ac246196 in __assert_fail_base () at /lib64/libc.so.6
#3  0x00007f55ac246242 in  () at /lib64/libc.so.6
#4  0x0000557b648dfe30 in line_out_put_buffer (hw=0x557b66773a40,
buf=0x557b66709f5c, size=1764)
    at /home/kraxel/projects/qemu/audio/spiceaudio.c:143
#5  0x0000557b648d8bc6 in audio_pcm_hw_run_out (hw=0x557b66773a40,
live=441)
    at /home/kraxel/projects/qemu/audio/audio.c:1081
#6  0x0000557b648d8f16 in audio_run_out (s=0x557b65b68100)
    at /home/kraxel/projects/qemu/audio/audio.c:1166
#7  0x0000557b648d9804 in audio_run (s=0x557b65b68100,
msg=0x557b64e41f58 "timer")
    at /home/kraxel/projects/qemu/audio/audio.c:1349
#8  0x0000557b648d830b in audio_timer (opaque=0x557b65b68100)
    at /home/kraxel/projects/qemu/audio/audio.c:830
#9  0x0000557b64cdd1ec in timerlist_run_timers
(timer_list=0x557b65b23730)
    at /home/kraxel/projects/qemu/util/qemu-timer.c:592
#10 0x0000557b64cdd296 in qemu_clock_run_timers
(type=QEMU_CLOCK_VIRTUAL)
    at /home/kraxel/projects/qemu/util/qemu-timer.c:606
#11 0x0000557b64cdd556 in qemu_clock_run_all_timers ()
    at /home/kraxel/projects/qemu/util/qemu-timer.c:692
#12 0x0000557b64cddcf2 in main_loop_wait (nonblocking=0)
    at /home/kraxel/projects/qemu/util/main-loop.c:524
#13 0x0000557b648c9c9f in main_loop () at
/home/kraxel/projects/qemu/vl.c:1806
#14 0x0000557b648d135d in main (argc=18, argv=0x7ffda3815208,
envp=0x7ffda38152a0)
    at /home/kraxel/projects/qemu/vl.c:4488

(sleep 3; remote-viewer spice://localhost:12345) & qemu-default
-enable-kvm -name "qemu fedora audio testing" -M q35 -m 4G -cdrom
/vmdisk/iso/Fedora-Workstation-Live-x86_64-30-1.2.iso -device intel-hda
-device hda-micro,audiodev=snd0 -spice port=12345,disable-ticketing
-audiodev spice,id=snd0