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cubeb_audio: Add failsafe timeout for output and more logging.

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This commit is contained in:
squidbus 2024-12-28 16:28:49 -08:00
parent ee974414d2
commit 7a402f205c
2 changed files with 26 additions and 3 deletions
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2
src/core/libraries/audio/audioout_backend.h
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@ -33,6 +33,8 @@ public:
std::unique_ptr<PortBackend> Open(PortOut& port) override;
private:
static void LogCallback(const char* fmt, ...);
cubeb* ctx = nullptr;
};

27
src/core/libraries/audio/cubeb_audio.cpp
View File

@ -2,9 +2,11 @@
// SPDX-License-Identifier: GPL-2.0-or-later
#include <condition_variable>
#include <cstdarg>
#include <mutex>
#include <cubeb/cubeb.h>
#include "common/div_ceil.h"
#include "common/logging/log.h"
#include "common/ringbuffer.h"
#include "core/libraries/audio/audioout.h"
@ -17,7 +19,9 @@ constexpr int AUDIO_STREAM_BUFFER_THRESHOLD = 65536; // Define constant for buff
class CubebPortBackend : public PortBackend {
public:
CubebPortBackend(cubeb* ctx, const PortOut& port)
: frame_size(port.frame_size), buffer(static_cast<int>(port.buffer_size) * 4) {
: frame_size(port.frame_size),
buffer_time(Common::DivCeil(1000000 * port.samples_num, port.freq)),
buffer(static_cast<int>(port.buffer_size) * 4) {
if (!ctx) {
return;
}
@ -82,8 +86,13 @@ public:
auto* data = static_cast<u8*>(ptr);
std::unique_lock lock{buffer_mutex};
buffer_cv.wait(lock, [&] { return buffer.available_write() >= size; });
buffer.enqueue(data, static_cast<int>(size));
buffer_cv.wait_for(lock, buffer_time * 2, [&] { return buffer.available_write() >= size; });
const auto enqueued_size = buffer.enqueue(data, static_cast<int>(size));
if (enqueued_size < size) {
// This can happen if the wait condition timed out.
LOG_WARNING(Lib_AudioOut, "Dropped {} audio frames",
(size - enqueued_size) / frame_size);
}
}
void SetVolume(const std::array<int, 8>& ch_volumes) override {
@ -136,6 +145,8 @@ private:
}
size_t frame_size;
// Microseconds of audio per guest output buffer, rounded up
std::chrono::microseconds buffer_time;
RingBuffer<u8> buffer;
std::mutex buffer_mutex;
std::condition_variable buffer_cv;
@ -143,6 +154,7 @@ private:
};
CubebAudioOut::CubebAudioOut() {
cubeb_set_log_callback(CUBEB_LOG_NORMAL, LogCallback);
if (const auto ret = cubeb_init(&ctx, "shadPS4", nullptr); ret != CUBEB_OK) {
LOG_CRITICAL(Lib_AudioOut, "Failed to create cubeb context: {}", ret);
}
@ -160,4 +172,13 @@ std::unique_ptr<PortBackend> CubebAudioOut::Open(PortOut& port) {
return std::make_unique<CubebPortBackend>(ctx, port);
}
void CubebAudioOut::LogCallback(const char* fmt, ...) {
char buffer[512];
std::va_list args;
va_start(args, fmt);
std::vsnprintf(buffer, sizeof(buffer), fmt, args);
va_end(args);
LOG_INFO(Lib_AudioOut, "[cubeb] {}", buffer);
}
} // namespace Libraries::AudioOut