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audio: fix pacing and AudioOut2 port lifetime

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Extracted from 6a60f1b17481a0e5e14242c0fb4dc22f963545e1 in KytyPS5/KytyPS5#147.
This commit is contained in:
Stefanos Costa authored and nmzik committed 2026-08-02 06:35:52 +02:00
1 parent 4631b96178
commit 66f640527d
5 files changed
+326 -51
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src/libs/audio.cpp
+16 -2
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@@ -364,7 +364,12 @@ bool Audio::QueueSdlAudio(PortOut* port, const void* data, bool blocking) {
}
if (blocking) {
const auto min_queued_size = queue_size * 2u;
constexpr uint64_t target_latency_us = 40000;
const auto buffer_us = port->freq != 0 ? (1000000ULL * port->samples_num) / port->freq : 0;
const auto buffers =
buffer_us != 0 ? static_cast<uint32_t>((target_latency_us + buffer_us - 1) / buffer_us)
: 2u;
const auto min_queued_size = queue_size * std::clamp(buffers, 2u, 16u);
const auto wait_start = LibKernel::KernelGetProcessTime();
while (SDL_GetQueuedAudioSize(port->audio_device) > min_queued_size) {
if (LibKernel::KernelGetProcessTime() - wait_start > 200000) {
@@ -511,7 +516,16 @@ uint32_t Audio::AudioOutOutputs(OutputParam* params, uint32_t num, bool blocking
max_wait_time = (wait_time > max_wait_time ? wait_time : max_wait_time);
}
if (blocking && max_wait_time != 0) {
bool all_ports_have_device = true;
for (uint32_t i = 0; i < num; i++) {
if (m_out_ports[params[i].handle.GetId()].audio_device == 0) {
all_ports_have_device = false;
break;
}
}
// Device-backed ports are paced by the SDL queue above.
if (blocking && max_wait_time != 0 && !all_ports_have_device) {
Common::Thread::SleepMicro(max_wait_time);
}