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audio: simple-copy path should check if device is paused. 

Otherwise, we get into situations where all bound streams need to change
their output formats when a device pauses...and it makes the fast case
slow: when pausing a single input, it needs to silence and then convert a
silent buffer, instead of just zeroing out the device buffer and being done.
This commit is contained in:
Ryan C. Gordon 2023-09-27 16:24:33 -04:00
parent 505dc4c39c
commit 4db2b968af
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GPG Key ID: FA148B892AB48044
1 changed files with 1 additions and 2 deletions
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src/audio/SDL_audio.c
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@ -181,7 +181,6 @@ static SDL_bool AudioDeviceCanUseSimpleCopy(SDL_AudioDevice *device)
device->logical_devices && // there's a logical device
!device->logical_devices->next && // there's only _ONE_ logical device
!device->logical_devices->postmix && // there isn't a postmix callback
!SDL_AtomicGet(&device->logical_devices->paused) && // it isn't paused
device->logical_devices->bound_streams && // there's a bound stream
!device->logical_devices->bound_streams->next_binding // there's only _ONE_ bound stream.
) ? SDL_TRUE : SDL_FALSE;
@ -835,7 +834,7 @@ SDL_bool SDL_OutputAudioThreadIterate(SDL_AudioDevice *device)
// We should have updated this elsewhere if the format changed!
SDL_assert(AUDIO_SPECS_EQUAL(stream->dst_spec, device->spec));
const int br = SDL_GetAudioStreamData(stream, device_buffer, buffer_size);
const int br = SDL_AtomicGet(&logdev->paused) ? 0 : SDL_GetAudioStreamData(stream, device_buffer, buffer_size);
if (br < 0) { // Probably OOM. Kill the audio device; the whole thing is likely dying soon anyhow.
retval = SDL_FALSE;
SDL_memset(device_buffer, device->silence_value, buffer_size); // just supply silence to the device before we die.