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-rw-r--r--src/audio_core/adsp/apps/audio_renderer/audio_renderer.cpp218
-rw-r--r--src/audio_core/adsp/apps/audio_renderer/audio_renderer.h109
-rw-r--r--src/audio_core/adsp/apps/audio_renderer/command_buffer.h23
-rw-r--r--src/audio_core/adsp/apps/audio_renderer/command_list_processor.cpp103
-rw-r--r--src/audio_core/adsp/apps/audio_renderer/command_list_processor.h112
-rw-r--r--src/audio_core/adsp/apps/opus/opus_decode_object.cpp107
-rw-r--r--src/audio_core/adsp/apps/opus/opus_decode_object.h38
-rw-r--r--src/audio_core/adsp/apps/opus/opus_decoder.cpp269
-rw-r--r--src/audio_core/adsp/apps/opus/opus_decoder.h92
-rw-r--r--src/audio_core/adsp/apps/opus/opus_multistream_decode_object.cpp111
-rw-r--r--src/audio_core/adsp/apps/opus/opus_multistream_decode_object.h39
-rw-r--r--src/audio_core/adsp/apps/opus/shared_memory.h17
12 files changed, 1238 insertions, 0 deletions
diff --git a/src/audio_core/adsp/apps/audio_renderer/audio_renderer.cpp b/src/audio_core/adsp/apps/audio_renderer/audio_renderer.cpp
new file mode 100644
index 000000000..972d5e45b
--- /dev/null
+++ b/src/audio_core/adsp/apps/audio_renderer/audio_renderer.cpp
@@ -0,0 +1,218 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <array>
+#include <chrono>
+
+#include "audio_core/adsp/apps/audio_renderer/audio_renderer.h"
+#include "audio_core/audio_core.h"
+#include "audio_core/common/common.h"
+#include "audio_core/sink/sink.h"
+#include "common/logging/log.h"
+#include "common/microprofile.h"
+#include "common/thread.h"
+#include "core/core.h"
+#include "core/core_timing.h"
+
+MICROPROFILE_DEFINE(Audio_Renderer, "Audio", "DSP_AudioRenderer", MP_RGB(60, 19, 97));
+
+namespace AudioCore::ADSP::AudioRenderer {
+
+AudioRenderer::AudioRenderer(Core::System& system_, Sink::Sink& sink_)
+ : system{system_}, sink{sink_} {}
+
+AudioRenderer::~AudioRenderer() {
+ Stop();
+}
+
+void AudioRenderer::Start() {
+ CreateSinkStreams();
+
+ mailbox.Initialize(AppMailboxId::AudioRenderer);
+
+ main_thread = std::jthread([this](std::stop_token stop_token) { Main(stop_token); });
+
+ mailbox.Send(Direction::DSP, Message::InitializeOK);
+ if (mailbox.Receive(Direction::Host) != Message::InitializeOK) {
+ LOG_ERROR(Service_Audio, "Host Audio Renderer -- Failed to receive shutdown "
+ "message response from ADSP!");
+ return;
+ }
+ running = true;
+}
+
+void AudioRenderer::Stop() {
+ if (!running) {
+ return;
+ }
+
+ mailbox.Send(Direction::DSP, Message::Shutdown);
+ if (mailbox.Receive(Direction::Host) != Message::Shutdown) {
+ LOG_ERROR(Service_Audio, "Host Audio Renderer -- Failed to receive shutdown "
+ "message response from ADSP!");
+ }
+ main_thread.request_stop();
+ main_thread.join();
+
+ for (auto& stream : streams) {
+ if (stream) {
+ stream->Stop();
+ sink.CloseStream(stream);
+ stream = nullptr;
+ }
+ }
+ running = false;
+}
+
+void AudioRenderer::Signal() {
+ signalled_tick = system.CoreTiming().GetGlobalTimeNs().count();
+ Send(Direction::DSP, Message::Render);
+}
+
+void AudioRenderer::Wait() {
+ auto msg = Receive(Direction::Host);
+ if (msg != Message::RenderResponse) {
+ LOG_ERROR(Service_Audio,
+ "Did not receive the expected render response from the AudioRenderer! Expected "
+ "{}, got {}",
+ Message::RenderResponse, msg);
+ }
+}
+
+void AudioRenderer::Send(Direction dir, u32 message) {
+ mailbox.Send(dir, std::move(message));
+}
+
+u32 AudioRenderer::Receive(Direction dir) {
+ return mailbox.Receive(dir);
+}
+
+void AudioRenderer::SetCommandBuffer(s32 session_id, CpuAddr buffer, u64 size, u64 time_limit,
+ u64 applet_resource_user_id, bool reset) noexcept {
+ command_buffers[session_id].buffer = buffer;
+ command_buffers[session_id].size = size;
+ command_buffers[session_id].time_limit = time_limit;
+ command_buffers[session_id].applet_resource_user_id = applet_resource_user_id;
+ command_buffers[session_id].reset_buffer = reset;
+}
+
+u32 AudioRenderer::GetRemainCommandCount(s32 session_id) const noexcept {
+ return command_buffers[session_id].remaining_command_count;
+}
+
+void AudioRenderer::ClearRemainCommandCount(s32 session_id) noexcept {
+ command_buffers[session_id].remaining_command_count = 0;
+}
+
+u64 AudioRenderer::GetRenderingStartTick(s32 session_id) const noexcept {
+ return (1000 * command_buffers[session_id].render_time_taken_us) + signalled_tick;
+}
+
+void AudioRenderer::CreateSinkStreams() {
+ u32 channels{sink.GetDeviceChannels()};
+ for (u32 i = 0; i < MaxRendererSessions; i++) {
+ std::string name{fmt::format("ADSP_RenderStream-{}", i)};
+ streams[i] =
+ sink.AcquireSinkStream(system, channels, name, ::AudioCore::Sink::StreamType::Render);
+ streams[i]->SetRingSize(4);
+ }
+}
+
+void AudioRenderer::Main(std::stop_token stop_token) {
+ static constexpr char name[]{"DSP_AudioRenderer_Main"};
+ MicroProfileOnThreadCreate(name);
+ Common::SetCurrentThreadName(name);
+ Common::SetCurrentThreadPriority(Common::ThreadPriority::High);
+
+ // TODO: Create buffer map/unmap thread + mailbox
+ // TODO: Create gMix devices, initialize them here
+
+ if (mailbox.Receive(Direction::DSP) != Message::InitializeOK) {
+ LOG_ERROR(Service_Audio,
+ "ADSP Audio Renderer -- Failed to receive initialize message from host!");
+ return;
+ }
+
+ mailbox.Send(Direction::Host, Message::InitializeOK);
+
+ // 0.12 seconds (2,304,000 / 19,200,000)
+ constexpr u64 max_process_time{2'304'000ULL};
+
+ while (!stop_token.stop_requested()) {
+ auto msg{mailbox.Receive(Direction::DSP)};
+ switch (msg) {
+ case Message::Shutdown:
+ mailbox.Send(Direction::Host, Message::Shutdown);
+ return;
+
+ case Message::Render: {
+ if (system.IsShuttingDown()) [[unlikely]] {
+ std::this_thread::sleep_for(std::chrono::milliseconds(5));
+ mailbox.Send(Direction::Host, Message::RenderResponse);
+ continue;
+ }
+ std::array<bool, MaxRendererSessions> buffers_reset{};
+ std::array<u64, MaxRendererSessions> render_times_taken{};
+ const auto start_time{system.CoreTiming().GetGlobalTimeUs().count()};
+
+ for (u32 index = 0; index < MaxRendererSessions; index++) {
+ auto& command_buffer{command_buffers[index]};
+ auto& command_list_processor{command_list_processors[index]};
+
+ // Check this buffer is valid, as it may not be used.
+ if (command_buffer.buffer != 0) {
+ // If there are no remaining commands (from the previous list),
+ // this is a new command list, initialize it.
+ if (command_buffer.remaining_command_count == 0) {
+ command_list_processor.Initialize(system, command_buffer.buffer,
+ command_buffer.size, streams[index]);
+ }
+
+ if (command_buffer.reset_buffer && !buffers_reset[index]) {
+ streams[index]->ClearQueue();
+ buffers_reset[index] = true;
+ }
+
+ u64 max_time{max_process_time};
+ if (index == 1 && command_buffer.applet_resource_user_id ==
+ command_buffers[0].applet_resource_user_id) {
+ max_time = max_process_time - render_times_taken[0];
+ if (render_times_taken[0] > max_process_time) {
+ max_time = 0;
+ }
+ }
+
+ max_time = std::min(command_buffer.time_limit, max_time);
+ command_list_processor.SetProcessTimeMax(max_time);
+
+ if (index == 0) {
+ streams[index]->WaitFreeSpace(stop_token);
+ }
+
+ // Process the command list
+ {
+ MICROPROFILE_SCOPE(Audio_Renderer);
+ render_times_taken[index] =
+ command_list_processor.Process(index) - start_time;
+ }
+
+ const auto end_time{system.CoreTiming().GetGlobalTimeUs().count()};
+
+ command_buffer.remaining_command_count =
+ command_list_processor.GetRemainingCommandCount();
+ command_buffer.render_time_taken_us = end_time - start_time;
+ }
+ }
+
+ mailbox.Send(Direction::Host, Message::RenderResponse);
+ } break;
+
+ default:
+ LOG_WARNING(Service_Audio,
+ "ADSP AudioRenderer received an invalid message, msg={:02X}!", msg);
+ break;
+ }
+ }
+}
+
+} // namespace AudioCore::ADSP::AudioRenderer
diff --git a/src/audio_core/adsp/apps/audio_renderer/audio_renderer.h b/src/audio_core/adsp/apps/audio_renderer/audio_renderer.h
new file mode 100644
index 000000000..85874d88a
--- /dev/null
+++ b/src/audio_core/adsp/apps/audio_renderer/audio_renderer.h
@@ -0,0 +1,109 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+#include <memory>
+#include <thread>
+
+#include "audio_core/adsp/apps/audio_renderer/command_buffer.h"
+#include "audio_core/adsp/apps/audio_renderer/command_list_processor.h"
+#include "audio_core/adsp/mailbox.h"
+#include "common/common_types.h"
+#include "common/polyfill_thread.h"
+#include "common/reader_writer_queue.h"
+#include "common/thread.h"
+
+namespace Core {
+class System;
+} // namespace Core
+
+namespace AudioCore {
+namespace Sink {
+class Sink;
+}
+
+namespace ADSP::AudioRenderer {
+
+enum Message : u32 {
+ Invalid = 0,
+ MapUnmap_Map = 1,
+ MapUnmap_MapResponse = 2,
+ MapUnmap_Unmap = 3,
+ MapUnmap_UnmapResponse = 4,
+ MapUnmap_InvalidateCache = 5,
+ MapUnmap_InvalidateCacheResponse = 6,
+ MapUnmap_Shutdown = 7,
+ MapUnmap_ShutdownResponse = 8,
+ InitializeOK = 22,
+ RenderResponse = 32,
+ Render = 42,
+ Shutdown = 52,
+};
+
+/**
+ * The AudioRenderer application running on the ADSP.
+ */
+class AudioRenderer {
+public:
+ explicit AudioRenderer(Core::System& system, Sink::Sink& sink);
+ ~AudioRenderer();
+
+ /**
+ * Start the AudioRenderer.
+ *
+ * @param mailbox The mailbox to use for this session.
+ */
+ void Start();
+
+ /**
+ * Stop the AudioRenderer.
+ */
+ void Stop();
+
+ void Signal();
+ void Wait();
+
+ void Send(Direction dir, u32 message);
+ u32 Receive(Direction dir);
+
+ void SetCommandBuffer(s32 session_id, CpuAddr buffer, u64 size, u64 time_limit,
+ u64 applet_resource_user_id, bool reset) noexcept;
+ u32 GetRemainCommandCount(s32 session_id) const noexcept;
+ void ClearRemainCommandCount(s32 session_id) noexcept;
+ u64 GetRenderingStartTick(s32 session_id) const noexcept;
+
+private:
+ /**
+ * Main AudioRenderer thread, responsible for processing the command lists.
+ */
+ void Main(std::stop_token stop_token);
+
+ /**
+ * Creates the streams which will receive the processed samples.
+ */
+ void CreateSinkStreams();
+
+ /// Core system
+ Core::System& system;
+ /// The output sink the AudioRenderer will send samples to
+ Sink::Sink& sink;
+ /// The active mailbox
+ Mailbox mailbox;
+ /// Main thread
+ std::jthread main_thread{};
+ /// The current state
+ std::atomic<bool> running{};
+ /// Shared memory of input command buffers, set by host, read by DSP
+ std::array<CommandBuffer, MaxRendererSessions> command_buffers{};
+ /// The command lists to process
+ std::array<CommandListProcessor, MaxRendererSessions> command_list_processors{};
+ /// The streams which will receive the processed samples
+ std::array<Sink::SinkStream*, MaxRendererSessions> streams{};
+ /// CPU Tick when the DSP was signalled to process, uses time rather than tick
+ u64 signalled_tick{0};
+};
+
+} // namespace ADSP::AudioRenderer
+} // namespace AudioCore
diff --git a/src/audio_core/adsp/apps/audio_renderer/command_buffer.h b/src/audio_core/adsp/apps/audio_renderer/command_buffer.h
new file mode 100644
index 000000000..3fd1b09dc
--- /dev/null
+++ b/src/audio_core/adsp/apps/audio_renderer/command_buffer.h
@@ -0,0 +1,23 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "audio_core/common/common.h"
+#include "common/common_types.h"
+
+namespace AudioCore::ADSP::AudioRenderer {
+
+struct CommandBuffer {
+ // Set by the host
+ CpuAddr buffer{};
+ u64 size{};
+ u64 time_limit{};
+ u64 applet_resource_user_id{};
+ bool reset_buffer{};
+ // Set by the DSP
+ u32 remaining_command_count{};
+ u64 render_time_taken_us{};
+};
+
+} // namespace AudioCore::ADSP::AudioRenderer
diff --git a/src/audio_core/adsp/apps/audio_renderer/command_list_processor.cpp b/src/audio_core/adsp/apps/audio_renderer/command_list_processor.cpp
new file mode 100644
index 000000000..24e4d0496
--- /dev/null
+++ b/src/audio_core/adsp/apps/audio_renderer/command_list_processor.cpp
@@ -0,0 +1,103 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <string>
+
+#include "audio_core/adsp/apps/audio_renderer/command_list_processor.h"
+#include "audio_core/renderer/command/command_list_header.h"
+#include "audio_core/renderer/command/commands.h"
+#include "common/settings.h"
+#include "core/core.h"
+#include "core/core_timing.h"
+#include "core/memory.h"
+
+namespace AudioCore::ADSP::AudioRenderer {
+
+void CommandListProcessor::Initialize(Core::System& system_, CpuAddr buffer, u64 size,
+ Sink::SinkStream* stream_) {
+ system = &system_;
+ memory = &system->ApplicationMemory();
+ stream = stream_;
+ header = reinterpret_cast<Renderer::CommandListHeader*>(buffer);
+ commands = reinterpret_cast<u8*>(buffer + sizeof(Renderer::CommandListHeader));
+ commands_buffer_size = size;
+ command_count = header->command_count;
+ sample_count = header->sample_count;
+ target_sample_rate = header->sample_rate;
+ mix_buffers = header->samples_buffer;
+ buffer_count = header->buffer_count;
+ processed_command_count = 0;
+}
+
+void CommandListProcessor::SetProcessTimeMax(const u64 time) {
+ max_process_time = time;
+}
+
+u32 CommandListProcessor::GetRemainingCommandCount() const {
+ return command_count - processed_command_count;
+}
+
+Sink::SinkStream* CommandListProcessor::GetOutputSinkStream() const {
+ return stream;
+}
+
+u64 CommandListProcessor::Process(u32 session_id) {
+ const auto start_time_{system->CoreTiming().GetGlobalTimeUs().count()};
+ const auto command_base{CpuAddr(commands)};
+
+ if (processed_command_count > 0) {
+ current_processing_time += start_time_ - end_time;
+ } else {
+ start_time = start_time_;
+ current_processing_time = 0;
+ }
+
+ std::string dump{fmt::format("\nSession {}\n", session_id)};
+
+ for (u32 index = 0; index < command_count; index++) {
+ auto& command{*reinterpret_cast<Renderer::ICommand*>(commands)};
+
+ if (command.magic != 0xCAFEBABE) {
+ LOG_ERROR(Service_Audio, "Command has invalid magic! Expected 0xCAFEBABE, got {:08X}",
+ command.magic);
+ return system->CoreTiming().GetGlobalTimeUs().count() - start_time_;
+ }
+
+ auto current_offset{CpuAddr(commands) - command_base};
+
+ if (current_offset + command.size > commands_buffer_size) {
+ LOG_ERROR(Service_Audio,
+ "Command exceeded command buffer, buffer size {:08X}, command ends at {:08X}",
+ commands_buffer_size,
+ CpuAddr(commands) + command.size - sizeof(Renderer::CommandListHeader));
+ return system->CoreTiming().GetGlobalTimeUs().count() - start_time_;
+ }
+
+ if (Settings::values.dump_audio_commands) {
+ command.Dump(*this, dump);
+ }
+
+ if (!command.Verify(*this)) {
+ break;
+ }
+
+ if (command.enabled) {
+ command.Process(*this);
+ } else {
+ dump += fmt::format("\tDisabled!\n");
+ }
+
+ processed_command_count++;
+ commands += command.size;
+ }
+
+ if (Settings::values.dump_audio_commands && dump != last_dump) {
+ LOG_WARNING(Service_Audio, "{}", dump);
+ last_dump = dump;
+ }
+
+ end_time = system->CoreTiming().GetGlobalTimeUs().count();
+ return end_time - start_time_;
+}
+
+} // namespace AudioCore::ADSP::AudioRenderer
diff --git a/src/audio_core/adsp/apps/audio_renderer/command_list_processor.h b/src/audio_core/adsp/apps/audio_renderer/command_list_processor.h
new file mode 100644
index 000000000..4e5fb793e
--- /dev/null
+++ b/src/audio_core/adsp/apps/audio_renderer/command_list_processor.h
@@ -0,0 +1,112 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <span>
+
+#include "audio_core/common/common.h"
+#include "audio_core/renderer/command/command_list_header.h"
+#include "common/common_types.h"
+
+namespace Core {
+namespace Memory {
+class Memory;
+}
+class System;
+} // namespace Core
+
+namespace AudioCore {
+namespace Sink {
+class SinkStream;
+}
+
+namespace Renderer {
+struct CommandListHeader;
+}
+
+namespace ADSP::AudioRenderer {
+
+/**
+ * A processor for command lists given to the AudioRenderer.
+ */
+class CommandListProcessor {
+public:
+ /**
+ * Initialize the processor.
+ *
+ * @param system - The core system.
+ * @param buffer - The command buffer to process.
+ * @param size - The size of the buffer.
+ * @param stream - The stream to be used for sending the samples.
+ */
+ void Initialize(Core::System& system, CpuAddr buffer, u64 size, Sink::SinkStream* stream);
+
+ /**
+ * Set the maximum processing time for this command list.
+ *
+ * @param time - The maximum process time.
+ */
+ void SetProcessTimeMax(u64 time);
+
+ /**
+ * Get the remaining command count for this list.
+ *
+ * @return The remaining command count.
+ */
+ u32 GetRemainingCommandCount() const;
+
+ /**
+ * Get the stream for this command list.
+ *
+ * @return The stream associated with this command list.
+ */
+ Sink::SinkStream* GetOutputSinkStream() const;
+
+ /**
+ * Process the command list.
+ *
+ * @param session_id - Session ID for the commands being processed.
+ *
+ * @return The time taken to process.
+ */
+ u64 Process(u32 session_id);
+
+ /// Core system
+ Core::System* system{};
+ /// Core memory
+ Core::Memory::Memory* memory{};
+ /// Stream for the processed samples
+ Sink::SinkStream* stream{};
+ /// Header info for this command list
+ Renderer::CommandListHeader* header{};
+ /// The command buffer
+ u8* commands{};
+ /// The command buffer size
+ u64 commands_buffer_size{};
+ /// The maximum processing time allotted
+ u64 max_process_time{};
+ /// The number of commands in the buffer
+ u32 command_count{};
+ /// The target sample count for output
+ u32 sample_count{};
+ /// The target sample rate for output
+ u32 target_sample_rate{};
+ /// The mixing buffers used by the commands
+ std::span<s32> mix_buffers{};
+ /// The number of mix buffers
+ u32 buffer_count{};
+ /// The number of processed commands so far
+ u32 processed_command_count{};
+ /// The processing start time of this list
+ u64 start_time{};
+ /// The current processing time for this list
+ u64 current_processing_time{};
+ /// The end processing time for this list
+ u64 end_time{};
+ /// Last command list string generated, used for dumping audio commands to console
+ std::string last_dump{};
+};
+
+} // namespace ADSP::AudioRenderer
+} // namespace AudioCore
diff --git a/src/audio_core/adsp/apps/opus/opus_decode_object.cpp b/src/audio_core/adsp/apps/opus/opus_decode_object.cpp
new file mode 100644
index 000000000..2c16d3769
--- /dev/null
+++ b/src/audio_core/adsp/apps/opus/opus_decode_object.cpp
@@ -0,0 +1,107 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/adsp/apps/opus/opus_decode_object.h"
+#include "common/assert.h"
+
+namespace AudioCore::ADSP::OpusDecoder {
+namespace {
+bool IsValidChannelCount(u32 channel_count) {
+ return channel_count == 1 || channel_count == 2;
+}
+} // namespace
+
+u32 OpusDecodeObject::GetWorkBufferSize(u32 channel_count) {
+ if (!IsValidChannelCount(channel_count)) {
+ return 0;
+ }
+ return static_cast<u32>(sizeof(OpusDecodeObject)) + opus_decoder_get_size(channel_count);
+}
+
+OpusDecodeObject& OpusDecodeObject::Initialize(u64 buffer, u64 buffer2) {
+ auto* new_decoder = reinterpret_cast<OpusDecodeObject*>(buffer);
+ auto* comparison = reinterpret_cast<OpusDecodeObject*>(buffer2);
+
+ if (new_decoder->magic == DecodeObjectMagic) {
+ if (!new_decoder->initialized ||
+ (new_decoder->initialized && new_decoder->self == comparison)) {
+ new_decoder->state_valid = true;
+ }
+ } else {
+ new_decoder->initialized = false;
+ new_decoder->state_valid = true;
+ }
+ return *new_decoder;
+}
+
+s32 OpusDecodeObject::InitializeDecoder(u32 sample_rate, u32 channel_count) {
+ if (!state_valid) {
+ return OPUS_INVALID_STATE;
+ }
+
+ if (initialized) {
+ return OPUS_OK;
+ }
+
+ // Unfortunately libopus does not expose the OpusDecoder struct publicly, so we can't include
+ // it in this class. Nintendo does not allocate memory, which is why we have a workbuffer
+ // provided.
+ // We could use _create and have libopus allocate it for us, but then we have to separately
+ // track which decoder is being used between this and multistream in order to call the correct
+ // destroy from the host side.
+ // This is a bit cringe, but is safe as these objects are only ever initialized inside the given
+ // workbuffer, and GetWorkBufferSize will guarantee there's enough space to follow.
+ decoder = (LibOpusDecoder*)(this + 1);
+ s32 ret = opus_decoder_init(decoder, sample_rate, channel_count);
+ if (ret == OPUS_OK) {
+ magic = DecodeObjectMagic;
+ initialized = true;
+ state_valid = true;
+ self = this;
+ final_range = 0;
+ }
+ return ret;
+}
+
+s32 OpusDecodeObject::Shutdown() {
+ if (!state_valid) {
+ return OPUS_INVALID_STATE;
+ }
+
+ if (initialized) {
+ magic = 0x0;
+ initialized = false;
+ state_valid = false;
+ self = nullptr;
+ final_range = 0;
+ decoder = nullptr;
+ }
+ return OPUS_OK;
+}
+
+s32 OpusDecodeObject::ResetDecoder() {
+ return opus_decoder_ctl(decoder, OPUS_RESET_STATE);
+}
+
+s32 OpusDecodeObject::Decode(u32& out_sample_count, u64 output_data, u64 output_data_size,
+ u64 input_data, u64 input_data_size) {
+ ASSERT(initialized);
+ out_sample_count = 0;
+
+ if (!state_valid) {
+ return OPUS_INVALID_STATE;
+ }
+
+ auto ret_code_or_samples = opus_decode(
+ decoder, reinterpret_cast<const u8*>(input_data), static_cast<opus_int32>(input_data_size),
+ reinterpret_cast<opus_int16*>(output_data), static_cast<opus_int32>(output_data_size), 0);
+
+ if (ret_code_or_samples < OPUS_OK) {
+ return ret_code_or_samples;
+ }
+
+ out_sample_count = ret_code_or_samples;
+ return opus_decoder_ctl(decoder, OPUS_GET_FINAL_RANGE_REQUEST, &final_range);
+}
+
+} // namespace AudioCore::ADSP::OpusDecoder
diff --git a/src/audio_core/adsp/apps/opus/opus_decode_object.h b/src/audio_core/adsp/apps/opus/opus_decode_object.h
new file mode 100644
index 000000000..6425f987c
--- /dev/null
+++ b/src/audio_core/adsp/apps/opus/opus_decode_object.h
@@ -0,0 +1,38 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <opus.h>
+
+#include "common/common_types.h"
+
+namespace AudioCore::ADSP::OpusDecoder {
+using LibOpusDecoder = ::OpusDecoder;
+static constexpr u32 DecodeObjectMagic = 0xDEADBEEF;
+
+class OpusDecodeObject {
+public:
+ static u32 GetWorkBufferSize(u32 channel_count);
+ static OpusDecodeObject& Initialize(u64 buffer, u64 buffer2);
+
+ s32 InitializeDecoder(u32 sample_rate, u32 channel_count);
+ s32 Shutdown();
+ s32 ResetDecoder();
+ s32 Decode(u32& out_sample_count, u64 output_data, u64 output_data_size, u64 input_data,
+ u64 input_data_size);
+ u32 GetFinalRange() const noexcept {
+ return final_range;
+ }
+
+private:
+ u32 magic;
+ bool initialized;
+ bool state_valid;
+ OpusDecodeObject* self;
+ u32 final_range;
+ LibOpusDecoder* decoder;
+};
+static_assert(std::is_trivially_constructible_v<OpusDecodeObject>);
+
+} // namespace AudioCore::ADSP::OpusDecoder
diff --git a/src/audio_core/adsp/apps/opus/opus_decoder.cpp b/src/audio_core/adsp/apps/opus/opus_decoder.cpp
new file mode 100644
index 000000000..2084de128
--- /dev/null
+++ b/src/audio_core/adsp/apps/opus/opus_decoder.cpp
@@ -0,0 +1,269 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <array>
+#include <chrono>
+
+#include "audio_core/adsp/apps/opus/opus_decode_object.h"
+#include "audio_core/adsp/apps/opus/opus_multistream_decode_object.h"
+#include "audio_core/adsp/apps/opus/shared_memory.h"
+#include "audio_core/audio_core.h"
+#include "audio_core/common/common.h"
+#include "common/logging/log.h"
+#include "common/microprofile.h"
+#include "common/thread.h"
+#include "core/core.h"
+#include "core/core_timing.h"
+
+MICROPROFILE_DEFINE(OpusDecoder, "Audio", "DSP_OpusDecoder", MP_RGB(60, 19, 97));
+
+namespace AudioCore::ADSP::OpusDecoder {
+
+namespace {
+constexpr size_t OpusStreamCountMax = 255;
+
+bool IsValidChannelCount(u32 channel_count) {
+ return channel_count == 1 || channel_count == 2;
+}
+
+bool IsValidMultiStreamChannelCount(u32 channel_count) {
+ return channel_count <= OpusStreamCountMax;
+}
+
+bool IsValidMultiStreamStreamCounts(s32 total_stream_count, s32 sterero_stream_count) {
+ return IsValidMultiStreamChannelCount(total_stream_count) && total_stream_count > 0 &&
+ sterero_stream_count > 0 && sterero_stream_count <= total_stream_count;
+}
+} // namespace
+
+OpusDecoder::OpusDecoder(Core::System& system_) : system{system_} {
+ init_thread = std::jthread([this](std::stop_token stop_token) { Init(stop_token); });
+}
+
+OpusDecoder::~OpusDecoder() {
+ if (!running) {
+ init_thread.request_stop();
+ return;
+ }
+
+ // Shutdown the thread
+ Send(Direction::DSP, Message::Shutdown);
+ auto msg = Receive(Direction::Host);
+ ASSERT_MSG(msg == Message::ShutdownOK, "Expected Opus shutdown code {}, got {}",
+ Message::ShutdownOK, msg);
+ main_thread.request_stop();
+ main_thread.join();
+ running = false;
+}
+
+void OpusDecoder::Send(Direction dir, u32 message) {
+ mailbox.Send(dir, std::move(message));
+}
+
+u32 OpusDecoder::Receive(Direction dir, std::stop_token stop_token) {
+ return mailbox.Receive(dir, stop_token);
+}
+
+void OpusDecoder::Init(std::stop_token stop_token) {
+ Common::SetCurrentThreadName("DSP_OpusDecoder_Init");
+
+ if (Receive(Direction::DSP, stop_token) != Message::Start) {
+ LOG_ERROR(Service_Audio,
+ "DSP OpusDecoder failed to receive Start message. Opus initialization failed.");
+ return;
+ }
+ main_thread = std::jthread([this](std::stop_token st) { Main(st); });
+ running = true;
+ Send(Direction::Host, Message::StartOK);
+}
+
+void OpusDecoder::Main(std::stop_token stop_token) {
+ Common::SetCurrentThreadName("DSP_OpusDecoder_Main");
+
+ while (!stop_token.stop_requested()) {
+ auto msg = Receive(Direction::DSP, stop_token);
+ switch (msg) {
+ case Shutdown:
+ Send(Direction::Host, Message::ShutdownOK);
+ return;
+
+ case GetWorkBufferSize: {
+ auto channel_count = static_cast<s32>(shared_memory->host_send_data[0]);
+
+ ASSERT(IsValidChannelCount(channel_count));
+
+ shared_memory->dsp_return_data[0] = OpusDecodeObject::GetWorkBufferSize(channel_count);
+ Send(Direction::Host, Message::GetWorkBufferSizeOK);
+ } break;
+
+ case InitializeDecodeObject: {
+ auto buffer = shared_memory->host_send_data[0];
+ auto buffer_size = shared_memory->host_send_data[1];
+ auto sample_rate = static_cast<s32>(shared_memory->host_send_data[2]);
+ auto channel_count = static_cast<s32>(shared_memory->host_send_data[3]);
+
+ ASSERT(sample_rate >= 0);
+ ASSERT(IsValidChannelCount(channel_count));
+ ASSERT(buffer_size >= OpusDecodeObject::GetWorkBufferSize(channel_count));
+
+ auto& decoder_object = OpusDecodeObject::Initialize(buffer, buffer);
+ shared_memory->dsp_return_data[0] =
+ decoder_object.InitializeDecoder(sample_rate, channel_count);
+
+ Send(Direction::Host, Message::InitializeDecodeObjectOK);
+ } break;
+
+ case ShutdownDecodeObject: {
+ auto buffer = shared_memory->host_send_data[0];
+ [[maybe_unused]] auto buffer_size = shared_memory->host_send_data[1];
+
+ auto& decoder_object = OpusDecodeObject::Initialize(buffer, buffer);
+ shared_memory->dsp_return_data[0] = decoder_object.Shutdown();
+
+ Send(Direction::Host, Message::ShutdownDecodeObjectOK);
+ } break;
+
+ case DecodeInterleaved: {
+ auto start_time = system.CoreTiming().GetGlobalTimeUs();
+
+ auto buffer = shared_memory->host_send_data[0];
+ auto input_data = shared_memory->host_send_data[1];
+ auto input_data_size = shared_memory->host_send_data[2];
+ auto output_data = shared_memory->host_send_data[3];
+ auto output_data_size = shared_memory->host_send_data[4];
+ auto final_range = static_cast<u32>(shared_memory->host_send_data[5]);
+ auto reset_requested = shared_memory->host_send_data[6];
+
+ u32 decoded_samples{0};
+
+ auto& decoder_object = OpusDecodeObject::Initialize(buffer, buffer);
+ s32 error_code{OPUS_OK};
+ if (reset_requested) {
+ error_code = decoder_object.ResetDecoder();
+ }
+
+ if (error_code == OPUS_OK) {
+ error_code = decoder_object.Decode(decoded_samples, output_data, output_data_size,
+ input_data, input_data_size);
+ }
+
+ if (error_code == OPUS_OK) {
+ if (final_range && decoder_object.GetFinalRange() != final_range) {
+ error_code = OPUS_INVALID_PACKET;
+ }
+ }
+
+ auto end_time = system.CoreTiming().GetGlobalTimeUs();
+ shared_memory->dsp_return_data[0] = error_code;
+ shared_memory->dsp_return_data[1] = decoded_samples;
+ shared_memory->dsp_return_data[2] = (end_time - start_time).count();
+
+ Send(Direction::Host, Message::DecodeInterleavedOK);
+ } break;
+
+ case MapMemory: {
+ [[maybe_unused]] auto buffer = shared_memory->host_send_data[0];
+ [[maybe_unused]] auto buffer_size = shared_memory->host_send_data[1];
+ Send(Direction::Host, Message::MapMemoryOK);
+ } break;
+
+ case UnmapMemory: {
+ [[maybe_unused]] auto buffer = shared_memory->host_send_data[0];
+ [[maybe_unused]] auto buffer_size = shared_memory->host_send_data[1];
+ Send(Direction::Host, Message::UnmapMemoryOK);
+ } break;
+
+ case GetWorkBufferSizeForMultiStream: {
+ auto total_stream_count = static_cast<s32>(shared_memory->host_send_data[0]);
+ auto stereo_stream_count = static_cast<s32>(shared_memory->host_send_data[1]);
+
+ ASSERT(IsValidMultiStreamStreamCounts(total_stream_count, stereo_stream_count));
+
+ shared_memory->dsp_return_data[0] = OpusMultiStreamDecodeObject::GetWorkBufferSize(
+ total_stream_count, stereo_stream_count);
+ Send(Direction::Host, Message::GetWorkBufferSizeForMultiStreamOK);
+ } break;
+
+ case InitializeMultiStreamDecodeObject: {
+ auto buffer = shared_memory->host_send_data[0];
+ auto buffer_size = shared_memory->host_send_data[1];
+ auto sample_rate = static_cast<s32>(shared_memory->host_send_data[2]);
+ auto channel_count = static_cast<s32>(shared_memory->host_send_data[3]);
+ auto total_stream_count = static_cast<s32>(shared_memory->host_send_data[4]);
+ auto stereo_stream_count = static_cast<s32>(shared_memory->host_send_data[5]);
+ // Nintendo seem to have a bug here, they try to use &host_send_data[6] for the channel
+ // mappings, but [6] is never set, and there is not enough room in the argument data for
+ // more than 40 channels, when 255 are possible.
+ // It also means the mapping values are undefined, though likely always 0,
+ // and the mappings given by the game are ignored. The mappings are copied to this
+ // dedicated buffer host side, so let's do as intended.
+ auto mappings = shared_memory->channel_mapping.data();
+
+ ASSERT(IsValidMultiStreamStreamCounts(total_stream_count, stereo_stream_count));
+ ASSERT(sample_rate >= 0);
+ ASSERT(buffer_size >= OpusMultiStreamDecodeObject::GetWorkBufferSize(
+ total_stream_count, stereo_stream_count));
+
+ auto& decoder_object = OpusMultiStreamDecodeObject::Initialize(buffer, buffer);
+ shared_memory->dsp_return_data[0] = decoder_object.InitializeDecoder(
+ sample_rate, total_stream_count, channel_count, stereo_stream_count, mappings);
+
+ Send(Direction::Host, Message::InitializeMultiStreamDecodeObjectOK);
+ } break;
+
+ case ShutdownMultiStreamDecodeObject: {
+ auto buffer = shared_memory->host_send_data[0];
+ [[maybe_unused]] auto buffer_size = shared_memory->host_send_data[1];
+
+ auto& decoder_object = OpusMultiStreamDecodeObject::Initialize(buffer, buffer);
+ shared_memory->dsp_return_data[0] = decoder_object.Shutdown();
+
+ Send(Direction::Host, Message::ShutdownMultiStreamDecodeObjectOK);
+ } break;
+
+ case DecodeInterleavedForMultiStream: {
+ auto start_time = system.CoreTiming().GetGlobalTimeUs();
+
+ auto buffer = shared_memory->host_send_data[0];
+ auto input_data = shared_memory->host_send_data[1];
+ auto input_data_size = shared_memory->host_send_data[2];
+ auto output_data = shared_memory->host_send_data[3];
+ auto output_data_size = shared_memory->host_send_data[4];
+ auto final_range = static_cast<u32>(shared_memory->host_send_data[5]);
+ auto reset_requested = shared_memory->host_send_data[6];
+
+ u32 decoded_samples{0};
+
+ auto& decoder_object = OpusMultiStreamDecodeObject::Initialize(buffer, buffer);
+ s32 error_code{OPUS_OK};
+ if (reset_requested) {
+ error_code = decoder_object.ResetDecoder();
+ }
+
+ if (error_code == OPUS_OK) {
+ error_code = decoder_object.Decode(decoded_samples, output_data, output_data_size,
+ input_data, input_data_size);
+ }
+
+ if (error_code == OPUS_OK) {
+ if (final_range && decoder_object.GetFinalRange() != final_range) {
+ error_code = OPUS_INVALID_PACKET;
+ }
+ }
+
+ auto end_time = system.CoreTiming().GetGlobalTimeUs();
+ shared_memory->dsp_return_data[0] = error_code;
+ shared_memory->dsp_return_data[1] = decoded_samples;
+ shared_memory->dsp_return_data[2] = (end_time - start_time).count();
+
+ Send(Direction::Host, Message::DecodeInterleavedForMultiStreamOK);
+ } break;
+
+ default:
+ LOG_ERROR(Service_Audio, "Invalid OpusDecoder command {}", msg);
+ continue;
+ }
+ }
+}
+
+} // namespace AudioCore::ADSP::OpusDecoder
diff --git a/src/audio_core/adsp/apps/opus/opus_decoder.h b/src/audio_core/adsp/apps/opus/opus_decoder.h
new file mode 100644
index 000000000..fcb89bb40
--- /dev/null
+++ b/src/audio_core/adsp/apps/opus/opus_decoder.h
@@ -0,0 +1,92 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <memory>
+#include <thread>
+
+#include "audio_core/adsp/apps/opus/shared_memory.h"
+#include "audio_core/adsp/mailbox.h"
+#include "common/common_types.h"
+
+namespace Core {
+class System;
+} // namespace Core
+
+namespace AudioCore::ADSP::OpusDecoder {
+
+enum Message : u32 {
+ Invalid = 0,
+ Start = 1,
+ Shutdown = 2,
+ StartOK = 11,
+ ShutdownOK = 12,
+ GetWorkBufferSize = 21,
+ InitializeDecodeObject = 22,
+ ShutdownDecodeObject = 23,
+ DecodeInterleaved = 24,
+ MapMemory = 25,
+ UnmapMemory = 26,
+ GetWorkBufferSizeForMultiStream = 27,
+ InitializeMultiStreamDecodeObject = 28,
+ ShutdownMultiStreamDecodeObject = 29,
+ DecodeInterleavedForMultiStream = 30,
+
+ GetWorkBufferSizeOK = 41,
+ InitializeDecodeObjectOK = 42,
+ ShutdownDecodeObjectOK = 43,
+ DecodeInterleavedOK = 44,
+ MapMemoryOK = 45,
+ UnmapMemoryOK = 46,
+ GetWorkBufferSizeForMultiStreamOK = 47,
+ InitializeMultiStreamDecodeObjectOK = 48,
+ ShutdownMultiStreamDecodeObjectOK = 49,
+ DecodeInterleavedForMultiStreamOK = 50,
+};
+
+/**
+ * The AudioRenderer application running on the ADSP.
+ */
+class OpusDecoder {
+public:
+ explicit OpusDecoder(Core::System& system);
+ ~OpusDecoder();
+
+ bool IsRunning() const noexcept {
+ return running;
+ }
+
+ void Send(Direction dir, u32 message);
+ u32 Receive(Direction dir, std::stop_token stop_token = {});
+
+ void SetSharedMemory(SharedMemory& shared_memory_) {
+ shared_memory = &shared_memory_;
+ }
+
+private:
+ /**
+ * Initializing thread, launched at audio_core boot to avoid blocking the main emu boot thread.
+ */
+ void Init(std::stop_token stop_token);
+ /**
+ * Main OpusDecoder thread, responsible for processing the incoming Opus packets.
+ */
+ void Main(std::stop_token stop_token);
+
+ /// Core system
+ Core::System& system;
+ /// Mailbox to communicate messages with the host, drives the main thread
+ Mailbox mailbox;
+ /// Init thread
+ std::jthread init_thread{};
+ /// Main thread
+ std::jthread main_thread{};
+ /// The current state
+ bool running{};
+ /// Structure shared with the host, input data set by the host before sending a mailbox message,
+ /// and the responses are written back by the OpusDecoder.
+ SharedMemory* shared_memory{};
+};
+
+} // namespace AudioCore::ADSP::OpusDecoder
diff --git a/src/audio_core/adsp/apps/opus/opus_multistream_decode_object.cpp b/src/audio_core/adsp/apps/opus/opus_multistream_decode_object.cpp
new file mode 100644
index 000000000..f6d362e68
--- /dev/null
+++ b/src/audio_core/adsp/apps/opus/opus_multistream_decode_object.cpp
@@ -0,0 +1,111 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/adsp/apps/opus/opus_multistream_decode_object.h"
+#include "common/assert.h"
+
+namespace AudioCore::ADSP::OpusDecoder {
+
+namespace {
+bool IsValidChannelCount(u32 channel_count) {
+ return channel_count == 1 || channel_count == 2;
+}
+
+bool IsValidStreamCounts(u32 total_stream_count, u32 stereo_stream_count) {
+ return total_stream_count > 0 && stereo_stream_count > 0 &&
+ stereo_stream_count <= total_stream_count && IsValidChannelCount(total_stream_count);
+}
+} // namespace
+
+u32 OpusMultiStreamDecodeObject::GetWorkBufferSize(u32 total_stream_count,
+ u32 stereo_stream_count) {
+ if (IsValidStreamCounts(total_stream_count, stereo_stream_count)) {
+ return static_cast<u32>(sizeof(OpusMultiStreamDecodeObject)) +
+ opus_multistream_decoder_get_size(total_stream_count, stereo_stream_count);
+ }
+ return 0;
+}
+
+OpusMultiStreamDecodeObject& OpusMultiStreamDecodeObject::Initialize(u64 buffer, u64 buffer2) {
+ auto* new_decoder = reinterpret_cast<OpusMultiStreamDecodeObject*>(buffer);
+ auto* comparison = reinterpret_cast<OpusMultiStreamDecodeObject*>(buffer2);
+
+ if (new_decoder->magic == DecodeMultiStreamObjectMagic) {
+ if (!new_decoder->initialized ||
+ (new_decoder->initialized && new_decoder->self == comparison)) {
+ new_decoder->state_valid = true;
+ }
+ } else {
+ new_decoder->initialized = false;
+ new_decoder->state_valid = true;
+ }
+ return *new_decoder;
+}
+
+s32 OpusMultiStreamDecodeObject::InitializeDecoder(u32 sample_rate, u32 total_stream_count,
+ u32 channel_count, u32 stereo_stream_count,
+ u8* mappings) {
+ if (!state_valid) {
+ return OPUS_INVALID_STATE;
+ }
+
+ if (initialized) {
+ return OPUS_OK;
+ }
+
+ // See OpusDecodeObject::InitializeDecoder for an explanation of this
+ decoder = (LibOpusMSDecoder*)(this + 1);
+ s32 ret = opus_multistream_decoder_init(decoder, sample_rate, channel_count, total_stream_count,
+ stereo_stream_count, mappings);
+ if (ret == OPUS_OK) {
+ magic = DecodeMultiStreamObjectMagic;
+ initialized = true;
+ state_valid = true;
+ self = this;
+ final_range = 0;
+ }
+ return ret;
+}
+
+s32 OpusMultiStreamDecodeObject::Shutdown() {
+ if (!state_valid) {
+ return OPUS_INVALID_STATE;
+ }
+
+ if (initialized) {
+ magic = 0x0;
+ initialized = false;
+ state_valid = false;
+ self = nullptr;
+ final_range = 0;
+ decoder = nullptr;
+ }
+ return OPUS_OK;
+}
+
+s32 OpusMultiStreamDecodeObject::ResetDecoder() {
+ return opus_multistream_decoder_ctl(decoder, OPUS_RESET_STATE);
+}
+
+s32 OpusMultiStreamDecodeObject::Decode(u32& out_sample_count, u64 output_data,
+ u64 output_data_size, u64 input_data, u64 input_data_size) {
+ ASSERT(initialized);
+ out_sample_count = 0;
+
+ if (!state_valid) {
+ return OPUS_INVALID_STATE;
+ }
+
+ auto ret_code_or_samples = opus_multistream_decode(
+ decoder, reinterpret_cast<const u8*>(input_data), static_cast<opus_int32>(input_data_size),
+ reinterpret_cast<opus_int16*>(output_data), static_cast<opus_int32>(output_data_size), 0);
+
+ if (ret_code_or_samples < OPUS_OK) {
+ return ret_code_or_samples;
+ }
+
+ out_sample_count = ret_code_or_samples;
+ return opus_multistream_decoder_ctl(decoder, OPUS_GET_FINAL_RANGE_REQUEST, &final_range);
+}
+
+} // namespace AudioCore::ADSP::OpusDecoder
diff --git a/src/audio_core/adsp/apps/opus/opus_multistream_decode_object.h b/src/audio_core/adsp/apps/opus/opus_multistream_decode_object.h
new file mode 100644
index 000000000..93558ded5
--- /dev/null
+++ b/src/audio_core/adsp/apps/opus/opus_multistream_decode_object.h
@@ -0,0 +1,39 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <opus_multistream.h>
+
+#include "common/common_types.h"
+
+namespace AudioCore::ADSP::OpusDecoder {
+using LibOpusMSDecoder = ::OpusMSDecoder;
+static constexpr u32 DecodeMultiStreamObjectMagic = 0xDEADBEEF;
+
+class OpusMultiStreamDecodeObject {
+public:
+ static u32 GetWorkBufferSize(u32 total_stream_count, u32 stereo_stream_count);
+ static OpusMultiStreamDecodeObject& Initialize(u64 buffer, u64 buffer2);
+
+ s32 InitializeDecoder(u32 sample_rate, u32 total_stream_count, u32 channel_count,
+ u32 stereo_stream_count, u8* mappings);
+ s32 Shutdown();
+ s32 ResetDecoder();
+ s32 Decode(u32& out_sample_count, u64 output_data, u64 output_data_size, u64 input_data,
+ u64 input_data_size);
+ u32 GetFinalRange() const noexcept {
+ return final_range;
+ }
+
+private:
+ u32 magic;
+ bool initialized;
+ bool state_valid;
+ OpusMultiStreamDecodeObject* self;
+ u32 final_range;
+ LibOpusMSDecoder* decoder;
+};
+static_assert(std::is_trivially_constructible_v<OpusMultiStreamDecodeObject>);
+
+} // namespace AudioCore::ADSP::OpusDecoder
diff --git a/src/audio_core/adsp/apps/opus/shared_memory.h b/src/audio_core/adsp/apps/opus/shared_memory.h
new file mode 100644
index 000000000..c696731ed
--- /dev/null
+++ b/src/audio_core/adsp/apps/opus/shared_memory.h
@@ -0,0 +1,17 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+
+namespace AudioCore::ADSP::OpusDecoder {
+
+struct SharedMemory {
+ std::array<u8, 0x100> channel_mapping{};
+ std::array<u64, 16> host_send_data{};
+ std::array<u64, 16> dsp_return_data{};
+};
+
+} // namespace AudioCore::ADSP::OpusDecoder