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hints: Added SDL_HINT_AUDIO_ENFORCE_MINIMUM_SPEC.

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Fixes #14426.
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2025-11-30 23:26:02 -05:00
parent ea1514ab63
commit b7c8b2f29a
2 changed files with 44 additions and 11 deletions
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25
src/audio/SDL_audio.c
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@@ -1800,18 +1800,21 @@ static bool OpenPhysicalAudioDevice(SDL_AudioDevice *device, const SDL_AudioSpec
SDL_copyp(&spec, inspec ? inspec : &device->default_spec);
PrepareAudioFormat(device->recording, &spec);
/* We impose a simple minimum on device formats. This prevents something low quality, like an old game using S8/8000Hz audio,
from ruining a music thing playing at CD quality that tries to open later, or some VoIP library that opens for mono output
ruining your surround-sound game because it got there first.
These are just requests! The backend may change any of these values during OpenDevice method! */
if (!SDL_GetHintBoolean(SDL_HINT_AUDIO_ENFORCE_MINIMUM_SPEC, true)) {
SDL_copyp(&device->spec, &spec);
} else {
/* We impose a simple minimum on device formats. This prevents something low quality, like an old game using S8/8000Hz audio,
from ruining a music thing playing at CD quality that tries to open later, or some VoIP library that opens for mono output
ruining your surround-sound game because it got there first.
These are just requests! The backend may change any of these values during OpenDevice method! */
const SDL_AudioFormat minimum_format = device->recording ? DEFAULT_AUDIO_RECORDING_FORMAT : DEFAULT_AUDIO_PLAYBACK_FORMAT;
const int minimum_channels = device->recording ? DEFAULT_AUDIO_RECORDING_CHANNELS : DEFAULT_AUDIO_PLAYBACK_CHANNELS;
const int minimum_freq = device->recording ? DEFAULT_AUDIO_RECORDING_FREQUENCY : DEFAULT_AUDIO_PLAYBACK_FREQUENCY;
device->spec.format = (SDL_AUDIO_BITSIZE(minimum_format) >= SDL_AUDIO_BITSIZE(spec.format)) ? minimum_format : spec.format;
device->spec.channels = SDL_max(minimum_channels, spec.channels);
device->spec.freq = SDL_max(minimum_freq, spec.freq);
}
const SDL_AudioFormat minimum_format = device->recording ? DEFAULT_AUDIO_RECORDING_FORMAT : DEFAULT_AUDIO_PLAYBACK_FORMAT;
const int minimum_channels = device->recording ? DEFAULT_AUDIO_RECORDING_CHANNELS : DEFAULT_AUDIO_PLAYBACK_CHANNELS;
const int minimum_freq = device->recording ? DEFAULT_AUDIO_RECORDING_FREQUENCY : DEFAULT_AUDIO_PLAYBACK_FREQUENCY;
device->spec.format = (SDL_AUDIO_BITSIZE(minimum_format) >= SDL_AUDIO_BITSIZE(spec.format)) ? minimum_format : spec.format;
device->spec.channels = SDL_max(minimum_channels, spec.channels);
device->spec.freq = SDL_max(minimum_freq, spec.freq);
device->sample_frames = SDL_GetDefaultSampleFramesFromFreq(device->spec.freq);
SDL_UpdatedAudioDeviceFormat(device); // start this off sane.