pipewire breaks infrequent writers between pipewire 0.3.59 and 0.3.61

• PipeWire version (pipewire --version):

pipewire
Compiled with libpipewire 0.3.63
Linked with libpipewire 0.3.63

• Distribution and distribution version (PRETTY_NAME from /etc/os-release): Debian GNU/Linux bookworm/sid
• Desktop Environment: Gnome
• Kernel version (uname -r): 6.0.0-6-amd64

Description of Problem:

Issue reported on pipewire 0.3.63 but reproducible with 0.3.61. Not sure if it is a pipewire issue but since 0.3.61, emacspeak (or libespeak-ng) is broken which is very annoying for people using emacspeak.

Bug reports:

• Debian: https://bugs.debian.org/1027762
• espeak-ng: https://github.com/espeak-ng/pcaudiolib/issues/23

How Reproducible:

Steps to Reproduce:

A simpler test case:

#include <string.h>
#include <assert.h>
#include <unistd.h>
#include <espeak-ng/speak_lib.h>
const char * a_str = "Begin";
const char * b_str = "end now";
int main() {
  unsigned int unique_identifier = 0;
  espeak_Initialize(AUDIO_OUTPUT_PLAYBACK, 512, NULL, 0);
  assert(espeak_SetParameter(espeakRATE, 550, 0) == EE_OK);
  espeak_Synth(a_str, strlen(a_str)+1, 0, POS_CHARACTER, 0,
                     espeakCHARS_UTF8 , &unique_identifier, NULL);
  sleep(3);
  espeak_Synth(b_str, strlen(b_str), 0, POS_CHARACTER, 0,
                     espeakCHARS_UTF8 , &unique_identifier, NULL);
  sleep(3);
}

Needs to be linked against -lespeak-ng.

Actual Results:

Before pipewire 0.3.61, we can hear both 'begin' and 'end now' and starting with pipewire 0.3.61, we can only hear 'begin'.

Expected Results:

We should hear both 'begin' and 'end now'.