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audout: Implement IAudioOut interface with AudioCore.
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@ -5,8 +5,7 @@
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#include <array>
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#include <vector>
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#include "common/logging/log.h"
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#include "core/core_timing.h"
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#include "core/core_timing_util.h"
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#include "core/core.h"
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#include "core/hle/ipc_helpers.h"
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#include "core/hle/kernel/event.h"
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#include "core/hle/kernel/hle_ipc.h"
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@ -14,17 +13,22 @@
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namespace Service::Audio {
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/// Switch sample rate frequency
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constexpr u32 sample_rate{48000};
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/// TODO(st4rk): dynamic number of channels, as I think Switch has support
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/// to more audio channels (probably when Docked I guess)
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constexpr u32 audio_channels{2};
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/// TODO(st4rk): find a proper value for the audio_ticks
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constexpr u64 audio_ticks{static_cast<u64>(CoreTiming::BASE_CLOCK_RATE / 500)};
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namespace ErrCodes {
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enum {
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ErrorUnknown = 2,
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BufferCountExceeded = 8,
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};
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}
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constexpr std::array<char, 10> DefaultDevice{{"DeviceOut"}};
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constexpr int DefaultSampleRate{48000};
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class IAudioOut final : public ServiceFramework<IAudioOut> {
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public:
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IAudioOut() : ServiceFramework("IAudioOut"), audio_out_state(AudioState::Stopped) {
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IAudioOut(AudoutParams audio_params)
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: ServiceFramework("IAudioOut"), audio_params(audio_params),
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audio_core(Core::System::GetInstance().AudioCore()) {
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static const FunctionInfo functions[] = {
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{0, &IAudioOut::GetAudioOutState, "GetAudioOutState"},
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{1, &IAudioOut::StartAudioOut, "StartAudioOut"},
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@ -32,66 +36,65 @@ public:
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{3, &IAudioOut::AppendAudioOutBufferImpl, "AppendAudioOutBuffer"},
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{4, &IAudioOut::RegisterBufferEvent, "RegisterBufferEvent"},
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{5, &IAudioOut::GetReleasedAudioOutBufferImpl, "GetReleasedAudioOutBuffer"},
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{6, nullptr, "ContainsAudioOutBuffer"},
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{6, &IAudioOut::ContainsAudioOutBuffer, "ContainsAudioOutBuffer"},
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{7, &IAudioOut::AppendAudioOutBufferImpl, "AppendAudioOutBufferAuto"},
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{8, &IAudioOut::GetReleasedAudioOutBufferImpl, "GetReleasedAudioOutBufferAuto"},
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{9, nullptr, "GetAudioOutBufferCount"},
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{9, &IAudioOut::GetAudioOutBufferCount, "GetAudioOutBufferCount"},
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{10, nullptr, "GetAudioOutPlayedSampleCount"},
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{11, nullptr, "FlushAudioOutBuffers"},
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};
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RegisterHandlers(functions);
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// This is the event handle used to check if the audio buffer was released
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buffer_event =
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Kernel::Event::Create(Kernel::ResetType::OneShot, "IAudioOutBufferReleasedEvent");
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buffer_event = Kernel::Event::Create(Kernel::ResetType::Sticky, "IAudioOutBufferReleased");
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// Register event callback to update the Audio Buffer
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audio_event = CoreTiming::RegisterEvent(
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"IAudioOut::UpdateAudioBuffersCallback", [this](u64 userdata, int cycles_late) {
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UpdateAudioBuffersCallback();
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CoreTiming::ScheduleEvent(audio_ticks - cycles_late, audio_event);
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});
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// Start the audio event
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CoreTiming::ScheduleEvent(audio_ticks, audio_event);
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}
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~IAudioOut() {
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CoreTiming::UnscheduleEvent(audio_event, 0);
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stream = audio_core.OpenStream(audio_params.sample_rate, audio_params.channel_count,
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[=]() { buffer_event->Signal(); });
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}
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private:
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struct AudioBuffer {
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u64_le next;
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u64_le buffer;
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u64_le buffer_capacity;
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u64_le buffer_size;
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u64_le offset;
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};
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static_assert(sizeof(AudioBuffer) == 0x28, "AudioBuffer is an invalid size");
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void GetAudioOutState(Kernel::HLERequestContext& ctx) {
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LOG_DEBUG(Service_Audio, "called");
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IPC::ResponseBuilder rb{ctx, 3};
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rb.Push(RESULT_SUCCESS);
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rb.Push(static_cast<u32>(audio_out_state));
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rb.Push(static_cast<u32>(stream->IsPlaying() ? AudioState::Started : AudioState::Stopped));
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}
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void StartAudioOut(Kernel::HLERequestContext& ctx) {
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LOG_WARNING(Service_Audio, "(STUBBED) called");
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LOG_DEBUG(Service_Audio, "called");
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// Start audio
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audio_out_state = AudioState::Started;
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if (stream->IsPlaying()) {
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IPC::ResponseBuilder rb{ctx, 2};
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rb.Push(ResultCode(ErrorModule::Audio, ErrCodes::ErrorUnknown));
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return;
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}
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audio_core.StartStream(stream);
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IPC::ResponseBuilder rb{ctx, 2};
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rb.Push(RESULT_SUCCESS);
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}
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void StopAudioOut(Kernel::HLERequestContext& ctx) {
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LOG_WARNING(Service_Audio, "(STUBBED) called");
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LOG_DEBUG(Service_Audio, "called");
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// Stop audio
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audio_out_state = AudioState::Stopped;
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queue_keys.clear();
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audio_core.StopStream(stream);
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IPC::ResponseBuilder rb{ctx, 2};
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rb.Push(RESULT_SUCCESS);
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}
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void RegisterBufferEvent(Kernel::HLERequestContext& ctx) {
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LOG_WARNING(Service_Audio, "(STUBBED) called");
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LOG_DEBUG(Service_Audio, "called");
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IPC::ResponseBuilder rb{ctx, 2, 1};
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rb.Push(RESULT_SUCCESS);
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@ -99,101 +102,107 @@ private:
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}
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void AppendAudioOutBufferImpl(Kernel::HLERequestContext& ctx) {
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LOG_WARNING(Service_Audio, "(STUBBED) called");
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LOG_DEBUG(Service_Audio, "(STUBBED) called {}", ctx.Description());
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IPC::RequestParser rp{ctx};
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const u64 key{rp.Pop<u64>()};
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queue_keys.insert(queue_keys.begin(), key);
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const auto& input_buffer{ctx.ReadBuffer()};
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ASSERT_MSG(input_buffer.size() == sizeof(AudioBuffer),
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"AudioBuffer input is an invalid size!");
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AudioBuffer audio_buffer{};
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std::memcpy(&audio_buffer, input_buffer.data(), sizeof(AudioBuffer));
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const u64 tag{rp.Pop<u64>()};
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std::vector<u8> data(audio_buffer.buffer_size);
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Memory::ReadBlock(audio_buffer.buffer, data.data(), data.size());
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if (!audio_core.QueueBuffer(stream, tag, std::move(data))) {
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IPC::ResponseBuilder rb{ctx, 2};
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rb.Push(ResultCode(ErrorModule::Audio, ErrCodes::BufferCountExceeded));
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}
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IPC::ResponseBuilder rb{ctx, 2};
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rb.Push(RESULT_SUCCESS);
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}
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void GetReleasedAudioOutBufferImpl(Kernel::HLERequestContext& ctx) {
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LOG_WARNING(Service_Audio, "(STUBBED) called");
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LOG_DEBUG(Service_Audio, "called {}", ctx.Description());
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IPC::RequestParser rp{ctx};
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const u64 max_count{ctx.GetWriteBufferSize() / sizeof(u64)};
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const auto released_buffers{audio_core.GetTagsAndReleaseBuffers(stream, max_count)};
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// TODO(st4rk): This is how libtransistor currently implements the
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// GetReleasedAudioOutBuffer, it should return the key (a VAddr) to the app and this address
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// is used to know which buffer should be filled with data and send again to the service
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// through AppendAudioOutBuffer. Check if this is the proper way to do it.
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u64 key{0};
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if (queue_keys.size()) {
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key = queue_keys.back();
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queue_keys.pop_back();
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}
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ctx.WriteBuffer(&key, sizeof(u64));
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std::vector<u64> tags{released_buffers};
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tags.resize(max_count);
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ctx.WriteBuffer(tags);
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IPC::ResponseBuilder rb{ctx, 3};
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rb.Push(RESULT_SUCCESS);
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// TODO(st4rk): This might be the total of released buffers, needs to be verified on
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// hardware
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rb.Push<u32>(static_cast<u32>(queue_keys.size()));
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rb.Push<u32>(static_cast<u32>(released_buffers.size()));
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}
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void UpdateAudioBuffersCallback() {
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if (audio_out_state != AudioState::Started) {
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return;
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}
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if (queue_keys.empty()) {
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return;
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}
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buffer_event->Signal();
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void ContainsAudioOutBuffer(Kernel::HLERequestContext& ctx) {
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LOG_DEBUG(Service_Audio, "called");
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IPC::RequestParser rp{ctx};
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const u64 tag{rp.Pop<u64>()};
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IPC::ResponseBuilder rb{ctx, 3};
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rb.Push(RESULT_SUCCESS);
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rb.Push(stream->ContainsBuffer(tag));
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}
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enum class AudioState : u32 {
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Started,
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Stopped,
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};
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void GetAudioOutBufferCount(Kernel::HLERequestContext& ctx) {
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LOG_DEBUG(Service_Audio, "called");
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IPC::ResponseBuilder rb{ctx, 3};
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rb.Push(RESULT_SUCCESS);
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rb.Push(static_cast<u32>(stream->GetQueueSize()));
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}
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/// This is used to trigger the audio event callback that is going to read the samples from the
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/// audio_buffer list and enqueue the samples using the sink (audio_core).
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CoreTiming::EventType* audio_event;
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AudioCore::AudioOut& audio_core;
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AudioCore::StreamPtr stream;
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AudoutParams audio_params{};
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/// This is the evend handle used to check if the audio buffer was released
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Kernel::SharedPtr<Kernel::Event> buffer_event;
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/// (st4rk): This is just a temporary workaround for the future implementation. Libtransistor
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/// uses the key as an address in the App, so we need to return when the
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/// GetReleasedAudioOutBuffer_1 is called, otherwise we'll run in problems, because
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/// libtransistor uses the key returned as an pointer.
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std::vector<u64> queue_keys;
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AudioState audio_out_state;
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};
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void AudOutU::ListAudioOutsImpl(Kernel::HLERequestContext& ctx) {
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LOG_WARNING(Service_Audio, "(STUBBED) called");
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LOG_DEBUG(Service_Audio, "called");
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IPC::RequestParser rp{ctx};
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constexpr std::array<char, 15> audio_interface{{"AudioInterface"}};
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ctx.WriteBuffer(audio_interface);
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ctx.WriteBuffer(DefaultDevice);
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IPC::ResponseBuilder rb = rp.MakeBuilder(3, 0, 0);
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rb.Push(RESULT_SUCCESS);
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// TODO(st4rk): We're currently returning only one audio interface (stringlist size). However,
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// it's highly possible to have more than one interface (despite that libtransistor requires
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// only one).
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rb.Push<u32>(1);
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rb.Push<u32>(1); // Amount of audio devices
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}
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void AudOutU::OpenAudioOutImpl(Kernel::HLERequestContext& ctx) {
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LOG_WARNING(Service_Audio, "(STUBBED) called");
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LOG_DEBUG(Service_Audio, "called");
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if (!audio_out_interface) {
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audio_out_interface = std::make_shared<IAudioOut>();
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ctx.WriteBuffer(DefaultDevice);
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IPC::RequestParser rp{ctx};
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auto params{rp.PopRaw<AudoutParams>()};
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if (params.channel_count <= 2) {
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// Mono does not exist for audout
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params.channel_count = 2;
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} else {
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params.channel_count = 6;
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}
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if (!params.sample_rate) {
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params.sample_rate = DefaultSampleRate;
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}
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// TODO(bunnei): Support more than one IAudioOut interface. When we add this, ListAudioOutsImpl
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// will likely need to be updated as well.
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ASSERT_MSG(!audio_out_interface, "Unimplemented");
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audio_out_interface = std::make_shared<IAudioOut>(std::move(params));
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IPC::ResponseBuilder rb{ctx, 6, 0, 1};
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rb.Push(RESULT_SUCCESS);
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rb.Push<u32>(sample_rate);
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rb.Push<u32>(audio_channels);
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rb.Push<u32>(DefaultSampleRate);
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rb.Push<u32>(params.channel_count);
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rb.Push<u32>(static_cast<u32>(PcmFormat::Int16));
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rb.Push<u32>(0); // This field is unknown
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rb.Push<u32>(static_cast<u32>(AudioState::Stopped));
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rb.PushIpcInterface<Audio::IAudioOut>(audio_out_interface);
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}
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@ -12,6 +12,18 @@ class HLERequestContext;
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namespace Service::Audio {
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struct AudoutParams {
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s32_le sample_rate;
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u16_le channel_count;
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INSERT_PADDING_BYTES(2);
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};
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static_assert(sizeof(AudoutParams) == 0x8, "AudoutParams is an invalid size");
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enum class AudioState : u32 {
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Started,
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Stopped,
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};
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class IAudioOut;
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class AudOutU final : public ServiceFramework<AudOutU> {
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