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ladybird/Userland/Utilities
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kleines Filmröllchen 49b087f3cd LibAudio+Userland: Use new audio queue in client-server communication 
Previously, we were sending Buffers to the server whenever we had new
audio data for it. This meant that for every audio enqueue action, we
needed to create a new shared memory anonymous buffer, send that
buffer's file descriptor over IPC (+recfd on the other side) and then
map the buffer into the audio server's memory to be able to play it.
This was fine for sending large chunks of audio data, like when playing
existing audio files. However, in the future we want to move to
real-time audio in some applications like Piano. This means that the
size of buffers that are sent need to be very small, as just the size of
a buffer itself is part of the audio latency. If we were to try
real-time audio with the existing system, we would run into problems
really quickly. Dealing with a continuous stream of new anonymous files
like the current audio system is rather expensive, as we need Kernel
help in multiple places. Additionally, every enqueue incurs an IPC call,
which are not optimized for >1000 calls/second (which would be needed
for real-time audio with buffer sizes of ~40 samples). So a fundamental
change in how we handle audio sending in userspace is necessary.

This commit moves the audio sending system onto a shared single producer
circular queue (SSPCQ) (introduced with one of the previous commits).
This queue is intended to live in shared memory and be accessed by
multiple processes at the same time. It was specifically written to
support the audio sending case, so e.g. it only supports a single
producer (the audio client). Now, audio sending follows these general
steps:
- The audio client connects to the audio server.
- The audio client creates a SSPCQ in shared memory.
- The audio client sends the SSPCQ's file descriptor to the audio server
  with the set_buffer() IPC call.
- The audio server receives the SSPCQ and maps it.
- The audio client signals start of playback with start_playback().
- At the same time:
  - The audio client writes its audio data into the shared-memory queue.
  - The audio server reads audio data from the shared-memory queue(s).
  Both sides have additional before-queue/after-queue buffers, depending
  on the exact application.
- Pausing playback is just an IPC call, nothing happens to the buffer
  except that the server stops reading from it until playback is
  resumed.
- Muting has nothing to do with whether audio data is read or not.
- When the connection closes, the queues are unmapped on both sides.

This should already improve audio playback performance in a bunch of
places.

Implementation & commit notes:
- Audio loaders don't create LegacyBuffers anymore. LegacyBuffer is kept
  for WavLoader, see previous commit message.
- Most intra-process audio data passing is done with FixedArray<Sample>
  or Vector<Sample>.
- Improvements to most audio-enqueuing applications. (If necessary I can
  try to extract some of the aplay improvements.)
- New APIs on LibAudio/ClientConnection which allows non-realtime
  applications to enqueue audio in big chunks like before.
- Removal of status APIs from the audio server connection for
  information that can be directly obtained from the shared queue.
- Split the pause playback API into two APIs with more intuitive names.

I know this is a large commit, and you can kinda tell from the commit
message. It's basically impossible to break this up without hacks, so
please forgive me. These are some of the best changes to the audio
subsystem and I hope that that makes up for this :yaktangle: commit.

:yakring:
2022-04-21 13:55:00 +02:00
..
abench.cpp LibAudio+Userland: Use new audio queue in client-server communication 2022-04-21 13:55:00 +02:00
adjtime.cpp adjtime: Port to LibMain 2022-01-21 01:52:22 +01:00
allocate.cpp allocate: Port to LibMain :^) 2021-11-27 11:14:16 +01:00
aplay.cpp LibAudio+Userland: Use new audio queue in client-server communication 2022-04-21 13:55:00 +02:00
arp.cpp arp: Add hostname resolution 2022-04-21 13:17:29 +02:00
asctl.cpp LibAudio+Userland: Use new audio queue in client-server communication 2022-04-21 13:55:00 +02:00
base64.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
basename.cpp Everywhere: Use default execpromises argument for Core::System::pledge 2021-11-28 08:04:57 +01:00
beep.cpp beep: Port to LibMain :^) 2022-01-09 11:16:00 +03:30
blockdev.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
bt.cpp Everywhere: Use default execpromises argument for Core::System::pledge 2021-11-28 08:04:57 +01:00
cal.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
cat.cpp Everywhere: Use default execpromises argument for Core::System::pledge 2021-11-28 08:04:57 +01:00
checksum.cpp Utilities: Use default execpromises parameter to pledge(..) 2022-04-03 17:13:51 -07:00
chgrp.cpp Utilities: Use default execpromises parameter to pledge(..) 2022-04-03 17:13:51 -07:00
chmod.cpp chmod: Use FilePermissionsMask to handle mode argument 2022-01-01 17:33:43 +00:00
chown.cpp Utilities: Use default execpromises parameter to pledge(..) 2022-04-03 17:13:51 -07:00
chres.cpp Userland: Always construct Application with try_create() 2022-04-18 12:57:34 +02:00
cksum.cpp Utilities: Read positional arguments as Strings not char*s 2022-04-11 21:09:42 +02:00
clear.cpp Utilities: Use default execpromises parameter to pledge(..) 2022-04-03 17:13:51 -07:00
CMakeLists.txt js: Convert non-UTF-8 encoded files to UTF-8 before parsing 2022-04-05 00:14:29 +01:00
cmp.cpp cmp: Implement cmp(1) 2022-03-19 11:01:49 -07:00
comm.cpp Utilities: Use default execpromises parameter to pledge(..) 2022-04-03 17:13:51 -07:00
config.cpp config: Port to LibMain :^) 2021-12-11 15:10:42 -08:00
copy.cpp Userland: Always construct Application with try_create() 2022-04-18 12:57:34 +02:00
cp.cpp cp: Print proper error message with strerror 2021-12-20 10:40:02 -08:00
cpp-lexer.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
cpp-parser.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
cpp-preprocessor.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
cut.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
date.cpp Utilities: Use default execpromises parameter to pledge(..) 2022-04-03 17:13:51 -07:00
dd.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
ddate.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
df.cpp df: Port to LibMain 2021-12-16 02:10:47 -08:00
diff.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
dirname.cpp dirname: Port to LibMain 2021-12-16 02:10:47 -08:00
disasm.cpp LibX86+disasm: Use an output format closer to objdump 2022-04-07 16:50:34 +02:00
disk_benchmark.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
dmesg.cpp Everywhere: Use default execpromises argument for Core::System::pledge 2021-11-28 08:04:57 +01:00
du.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
echo.cpp Utilities: Read positional arguments as Strings not char*s 2022-04-11 21:09:42 +02:00
env.cpp env: Use Core::System::exec() 2022-04-11 21:09:42 +02:00
errno.cpp errno: Port to LibMain 2022-01-01 14:40:41 +01:00
expr.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
false.cpp false: Port to LibMain 2022-01-14 19:42:19 +02:00
fdtdump.cpp fdtdump: Port to LibMain 2021-12-16 02:10:47 -08:00
fgrep.cpp fgrep: Port fgrep to LibMain 2022-01-01 14:40:41 +01:00
file.cpp Utilities: Read positional arguments as Strings not char*s 2022-04-11 21:09:42 +02:00
find.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
flock.cpp LibCore+flock: Make Core::System::waitpid more ergonomic 2022-01-11 16:04:29 +01:00
fortune.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
functrace.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
gml-format.cpp Utilities: Read positional arguments as Strings not char*s 2022-04-11 21:09:42 +02:00
grep.cpp Utilities: Read positional arguments as Strings not char*s 2022-04-11 21:09:42 +02:00
gron.cpp gron: Use StringView literals more (instead of raw C strings) 2021-12-04 14:24:04 +01:00
groupadd.cpp groupadd: Port to LibMain and use the new Core::Group abstraction :^) 2022-01-16 11:19:07 +01:00
groupdel.cpp groupdel: Port to LibMain 2022-02-28 14:05:04 +01:00
groups.cpp Utilities: Read positional arguments as Strings not char*s 2022-04-11 21:09:42 +02:00
gunzip.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
gzip.cpp gzip: Don't fail when trying to compress empty files 2022-01-08 15:29:38 +01:00
head.cpp Utilities: Read positional arguments as Strings not char*s 2022-04-11 21:09:42 +02:00
hexdump.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
host.cpp host: Use AK/IPv4Address to determine if argument is host/ip 2022-04-16 22:16:29 -07:00
hostname.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
id.cpp LibCore+id: Make more use of Core::System wrappers in Core::Account 2022-01-02 18:08:02 +01:00
ifconfig.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
ini.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
install.cpp LibCore+Userland: Remove File::ensure_parent_directories 2022-04-11 00:08:48 +02:00
jp.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
js.cpp js: Print the accumulator instead of the returned value in BC mode 2022-04-05 11:46:48 +02:00
kcov-example.cpp kcov-example: Port to LibMain 2022-03-29 21:28:29 -07:00
keymap.cpp LibCore+Everywhere: Return ErrorOr from ConfigFile::sync() 2022-02-16 19:49:41 -05:00
kill.cpp kill: Parse CLI arguments using Arguments.strings 2022-02-12 10:53:07 -05:00
killall.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
less.cpp Utilities: Use default execpromises parameter to pledge(..) 2022-04-03 17:13:51 -07:00
ln.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
logout.cpp Everywhere: Use default execpromises argument for Core::System::pledge 2021-11-28 08:04:57 +01:00
ls.cpp ls: Use Core::System::pledge(..) instead of LibC API 2022-04-03 17:13:51 -07:00
lscpu.cpp lscpu: Show hypervisor_vendor_id if present 2022-04-03 23:20:33 +02:00
lsirq.cpp lsirq: Port to LibMain 2022-01-31 15:25:07 +01:00
lsof.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
lspci.cpp Userland: Change static const variables to static constexpr 2022-03-18 19:58:57 +01:00
lsusb.cpp Utilities/lsusb: Propagate errors in JSON decoding 2021-12-30 14:37:02 +01:00
man.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
markdown-check.cpp markdown-check: Use Core::ArgsParser 2022-03-29 21:28:29 -07:00
matroska.cpp matroska: Port to LibMain 2022-03-22 11:39:20 +01:00
md.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
mkdir.cpp Utilities: Read positional arguments as Strings not char*s 2022-04-11 21:09:42 +02:00
mkfifo.cpp mkfifo: Add support for setting permissions with -m 2022-04-20 18:35:08 +02:00
mknod.cpp mknod: Port to LibMain 2022-01-24 14:01:58 +03:30
mktemp.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
mount.cpp Mount: Implement wxallowed mount option 2022-03-22 12:20:19 +01:00
mv.cpp Utilities: Read positional arguments as Strings not char*s 2022-04-11 21:09:42 +02:00
nc.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
netstat.cpp netstat: Add the wide flag option 2022-04-21 13:17:29 +02:00
nl.cpp Utilities: Read positional arguments as Strings not char*s 2022-04-11 21:09:42 +02:00
notify.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
nproc.cpp Everywhere: Use default execpromises argument for Core::System::pledge 2021-11-28 08:04:57 +01:00
ntpquery.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
open.cpp open: Use more StringView instead of const char* 2022-01-31 15:25:07 +01:00
pape.cpp Userland: Always construct Application with try_create() 2022-04-18 12:57:34 +02:00
passwd.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
paste.cpp Userland: Always construct Application with try_create() 2022-04-18 12:57:34 +02:00
pathchk.cpp Utilities: Read positional arguments as Strings not char*s 2022-04-11 21:09:42 +02:00
pgrep.cpp pgrep: Port to LibMain 2022-02-10 14:10:58 +00:00
pidof.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
ping.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
pls.cpp pls: Use Core::System::exec() 2022-04-11 21:09:42 +02:00
pmap.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
pmemdump.cpp Userland: Introduce the pmemdump utility 2022-01-08 13:21:16 +02:00
printf.cpp AK: Differ between long and long long formats 2022-04-14 03:12:56 +04:30
pro.cpp pro: Only attempt to parse a proxy url if it is provided 2022-04-09 14:36:28 +02:00
profile.cpp Utilities/profile: Call split_view() using StringView for command parts 2022-04-18 14:17:01 +02:00
ps.cpp Userland: Fix crash when inputting non-tty device into ps 2022-04-02 21:49:16 +02:00
purge.cpp purge: Port to LibMain 2022-03-22 11:39:20 +01:00
pwd.cpp pwd: Add missing rpath pledge 2022-01-21 22:10:23 +01:00
readelf.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
readlink.cpp readlink: Use StringView instead of const char* 2022-03-24 11:57:51 +01:00
realpath.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
reboot.cpp reboot: Port to LibMain 2022-03-03 15:42:44 -08:00
rev.cpp rev: Port to LibMain 2022-01-24 05:38:30 +00:00
rm.cpp rm: Port to LibMain 2022-01-25 02:50:10 +00:00
rmdir.cpp Utilities: Read positional arguments as Strings not char*s 2022-04-11 21:09:42 +02:00
run-tests.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
seq.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
shot.cpp Userland: Always construct Application with try_create() 2022-04-18 12:57:34 +02:00
shuf.cpp shuf: Port to LibMain 2022-01-24 05:38:30 +00:00
shutdown.cpp shutdown: Port to LibMain 2022-02-01 04:58:24 +00:00
sleep.cpp Utilities: Use default execpromises parameter to pledge(..) 2022-04-03 17:13:51 -07:00
sort.cpp sort: Port to LibMain 2022-01-24 05:38:30 +00:00
sql.cpp sql: Re-prompt user for input after unrecognized command 2022-03-24 07:25:04 -04:00
stat.cpp Utilities: Use default execpromises parameter to pledge(..) 2022-04-03 17:13:51 -07:00
strace.cpp strace: Use Core::System::exec() 2022-04-11 21:09:42 +02:00
stty.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
su.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
sync.cpp sync: Port to LibMain 2022-02-01 04:58:24 +00:00
syscall.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
sysctl.cpp sysctl: Port to LibMain 2022-02-01 04:58:24 +00:00
tac.cpp Userland: Port tac to LibMain 2022-01-09 04:26:16 -08:00
tail.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
tar.cpp Utilities: Read positional arguments as Strings not char*s 2022-04-11 21:09:42 +02:00
tee.cpp tee: Port to LibMain and move to SerenityOS code patterns 2022-03-26 18:39:58 +00:00
telws.cpp telws: Port to LibMain 2022-03-29 21:28:29 -07:00
test-bindtodevice.cpp test-bindtodevice: Port to LibMain 2022-03-29 21:28:29 -07:00
test-fuzz.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
test-imap.cpp LibIMAP+Userland: Convert LibIMAP::Client to the Serenity Stream APIs 2022-01-13 15:16:12 +03:30
test-pthread.cpp test-pthread: Port to LibMain and let local functions return ErrorOr<T> 2022-03-29 21:28:29 -07:00
test-unveil.cpp test-unveil: Port to LibMain 2022-03-29 21:28:29 -07:00
test.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
test_env.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
timezone.cpp Everywhere: Update copyrights with my new serenityos.org e-mail :^) 2022-01-31 18:23:22 +00:00
top.cpp top: Add support for quitting top by pressing q 2022-04-02 23:48:17 +01:00
touch.cpp Utilities: Read positional arguments as Strings not char*s 2022-04-11 21:09:42 +02:00
tr.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
traceroute.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
tree.cpp Utilities: Read positional arguments as Strings not char*s 2022-04-11 21:09:42 +02:00
true.cpp true: Port to LibMain 2022-03-22 11:39:20 +01:00
truncate.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
tt.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
tty.cpp tty: Port to LibMain 2022-03-29 21:28:29 -07:00
umount.cpp umount: Port to LibMain 2022-01-22 13:31:52 +02:00
uname.cpp uname: Port to LibMain 2022-01-04 07:33:23 +00:00
uniq.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
unzip.cpp Utilities/unzip: Use Core::Directory to create output directory 2022-04-13 16:00:17 +02:00
update-cpp-test-results.cpp Everywhere: Move cpp-tests under /home/anon/Tests 2022-03-20 22:20:59 +01:00
uptime.cpp uptime: Port to LibMain :^) 2022-01-02 09:42:56 +00:00
useradd.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
userdel.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
usermod.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
utmpupdate.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
w.cpp Revert "Userland: Invoke tzset in apps that care about time zones" 2022-01-28 15:13:35 +00:00
wasm.cpp Userland: Port wasm to LibMain 2022-01-09 04:26:16 -08:00
watch.cpp Utilities: Use default execpromises parameter to pledge(..) 2022-04-03 17:13:51 -07:00
wc.cpp Utilities: Read positional arguments as Strings not char*s 2022-04-11 21:09:42 +02:00
which.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
whoami.cpp whoami: Port to LibMain :^) 2021-11-30 23:34:40 +01:00
wsctl.cpp Userland: Always construct Application with try_create() 2022-04-18 12:57:34 +02:00
xargs.cpp Utilities: Read positional arguments as Strings not char*s 2022-04-11 21:09:42 +02:00
xml.cpp LibXML: Add a fairly basic XML parser 2022-03-28 23:11:48 +02:00
yes.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
zip.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00