Your message dated Tue, 25 Feb 2025 18:19:17 +0000
with message-id <[email protected]>
and subject line Bug#1096138: fixed in libsdl2 2.32.0+dfsg-2
has caused the Debian Bug report #1096138,
regarding libsdl2-dev: audio capture with pulseaudio do not work
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
1096138: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1096138
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: libsdl2-dev
Version: 2.32.0+dfsg-1
Forwarded: https://github.com/libsdl-org/SDL/issues/9706
As in <URL: https://github.com/libsdl-org/SDL/issues/9706 >, I
discovered this problem when trying to use whisper.cpp, and thanks to
the example program provided there, I can confirm that the issue is with
SDL 2.
This is the test program:
#include <SDL2/SDL.h>
#include <iostream>
const int SAMPLE_RATE = 16000;
const int NUM_CHANNELS = 1;
const int BUFFER_SIZE = 1024;
const int RECORDING_TIME = 2000; // 2 seconds in milliseconds
int callbackCount = 0;
// Audio callback function
void audioCallback(void* userdata, Uint8* stream, int len) {
// Do nothing with the audio data, just count the callback invocations
callbackCount++;
}
int main() {
if (SDL_Init(SDL_INIT_AUDIO) < 0) {
std::cerr << "SDL initialization failed: " << SDL_GetError() <<
std::endl;
return 1;
}
SDL_AudioSpec wantedSpec;
SDL_zero(wantedSpec);
wantedSpec.freq = SAMPLE_RATE;
wantedSpec.format = AUDIO_F32;
wantedSpec.channels = NUM_CHANNELS;
wantedSpec.samples = BUFFER_SIZE;
wantedSpec.callback = audioCallback;
SDL_AudioSpec obtainedSpec;
SDL_zero(obtainedSpec);
// Open the default audio capture device
SDL_AudioDeviceID audioDevice = SDL_OpenAudioDevice(NULL, 1, &wantedSpec,
&obtainedSpec, 0);
if (audioDevice == 0) {
std::cerr << "Failed to open audio: " << SDL_GetError() << std::endl;
SDL_Quit();
return 1;
}
// Start recording
SDL_PauseAudioDevice(audioDevice, 0);
// Wait for recording time
SDL_Delay(RECORDING_TIME);
// Stop recording
SDL_PauseAudioDevice(audioDevice, 1);
// Close the audio device
SDL_CloseAudioDevice(audioDevice);
// Print out the number of callback invocations
std::cout << "Callback invoked " << callbackCount << " times." << std::endl;
SDL_Quit();
return !callbackCount;
}
Tested using "g++ -o test test.cpp -lSDL2", and producing the
following output with pulseaudio:
%./test
Callback invoked 0 times.
%
Here are some alternative results:
% SDL_AUDIODRIVER=alsa ./test
Callback invoked 35 times.
% SDL_AUDIODRIVER=pipewire ./test
[W][26087.476267] pw.conf | [ conf.c: 1214 try_load_conf()]
can't load config client.conf: No such file or directory
[E][26087.476293] pw.conf | [ conf.c: 1243
pw_conf_load_conf_for_context()] can't load config client.conf: No such file or
directory
SDL initialization failed: Pipewire: Failed to create hotplug detection
context (2)
%
--
Happy hacking
Petter Reinholdtsen
--- End Message ---
--- Begin Message ---
Source: libsdl2
Source-Version: 2.32.0+dfsg-2
Done: Simon McVittie <[email protected]>
We believe that the bug you reported is fixed in the latest version of
libsdl2, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Simon McVittie <[email protected]> (supplier of updated libsdl2 package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Tue, 25 Feb 2025 17:09:58 +0000
Source: libsdl2
Architecture: source
Version: 2.32.0+dfsg-2
Distribution: unstable
Urgency: medium
Maintainer: Debian SDL packages maintainers
<[email protected]>
Changed-By: Simon McVittie <[email protected]>
Closes: 1096138
Changes:
libsdl2 (2.32.0+dfsg-2) unstable; urgency=medium
.
* d/patches: Update to upstream release-2.32.x branch commit
release-2.32.0-12-g024c27645, excluding Emscripten-, Github-, macOS-,
OS/2- and Windows-specific changes
- d/p/Changed-PULSEAUDIO_FlushRecording-to-only-flush-audio-pre.patch:
Fix audio capture regression since 2.30 with PulseAudio (Closes:
#1096138)
- d/p/SDL2-Add-SDL_HINT_JOYSTICK_HAPTIC_AXES.patch:
Add a hint to override number of joystick haptic axes
- d/p/Added-support-for-the-n-sscanf-format-specifier.patch:
%n support in SDL_sscanf and its relatives
- Documentation updates
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