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// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "audio_core/audio_core.h"
#include "audio_core/audio_manager.h"
#include "audio_core/device/audio_buffer.h"
#include "audio_core/device/device_session.h"
#include "audio_core/sink/sink_stream.h"
#include "core/core.h"
#include "core/core_timing.h"
#include "core/memory.h"
namespace AudioCore {
using namespace std::literals;
constexpr auto INCREMENT_TIME{5ms};
DeviceSession::DeviceSession(Core::System& system_)
: system{system_}, thread_event{Core::Timing::CreateEvent(
"AudioOutSampleTick",
[this](std::uintptr_t, s64 time, std::chrono::nanoseconds) {
return ThreadFunc();
})} {}
DeviceSession::~DeviceSession() {
Finalize();
}
Result DeviceSession::Initialize(std::string_view name_, SampleFormat sample_format_,
u16 channel_count_, size_t session_id_, u32 handle_,
u64 applet_resource_user_id_, Sink::StreamType type_) {
if (stream) {
Finalize();
}
name = fmt::format("{}-{}", name_, session_id_);
type = type_;
sample_format = sample_format_;
channel_count = channel_count_;
session_id = session_id_;
handle = handle_;
applet_resource_user_id = applet_resource_user_id_;
if (type == Sink::StreamType::In) {
sink = &system.AudioCore().GetInputSink();
} else {
sink = &system.AudioCore().GetOutputSink();
}
stream = sink->AcquireSinkStream(system, channel_count, name, type);
initialized = true;
return ResultSuccess;
}
void DeviceSession::Finalize() {
if (initialized) {
Stop();
sink->CloseStream(stream);
stream = nullptr;
}
}
void DeviceSession::Start() {
if (stream) {
stream->Start();
system.CoreTiming().ScheduleLoopingEvent(std::chrono::nanoseconds::zero(), INCREMENT_TIME,
thread_event);
}
}
void DeviceSession::Stop() {
if (stream) {
stream->Stop();
system.CoreTiming().UnscheduleEvent(thread_event, {});
}
}
void DeviceSession::AppendBuffers(std::span<AudioBuffer> buffers) const {
for (size_t i = 0; i < buffers.size(); i++) {
Sink::SinkBuffer new_buffer{
.frames = buffers[i].size / (channel_count * sizeof(s16)),
.frames_played = 0,
.tag = buffers[i].tag,
.consumed = false,
};
if (type == Sink::StreamType::In) {
std::vector<s16> samples{};
stream->AppendBuffer(new_buffer, samples);
} else {
std::vector<s16> samples(buffers[i].size / sizeof(s16));
system.Memory().ReadBlockUnsafe(buffers[i].samples, samples.data(), buffers[i].size);
stream->AppendBuffer(new_buffer, samples);
}
}
}
void DeviceSession::ReleaseBuffer(AudioBuffer& buffer) const {
if (type == Sink::StreamType::In) {
auto samples{stream->ReleaseBuffer(buffer.size / sizeof(s16))};
system.Memory().WriteBlockUnsafe(buffer.samples, samples.data(), buffer.size);
}
}
bool DeviceSession::IsBufferConsumed(AudioBuffer& buffer) const {
return played_sample_count >= buffer.end_timestamp;
}
void DeviceSession::SetVolume(f32 volume) const {
if (stream) {
stream->SetSystemVolume(volume);
}
}
u64 DeviceSession::GetPlayedSampleCount() const {
return played_sample_count;
}
std::optional<std::chrono::nanoseconds> DeviceSession::ThreadFunc() {
// Add 5ms of samples at a 48K sample rate.
played_sample_count += 48'000 * INCREMENT_TIME / 1s;
if (type == Sink::StreamType::Out) {
system.AudioCore().GetAudioManager().SetEvent(Event::Type::AudioOutManager, true);
} else {
system.AudioCore().GetAudioManager().SetEvent(Event::Type::AudioInManager, true);
}
return std::nullopt;
}
void DeviceSession::SetRingSize(u32 ring_size) {
stream->SetRingSize(ring_size);
}
} // namespace AudioCore
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