17 files changed, 230 insertions, 297 deletions

diff --git a/src/audio_core/opus/decoder.cpp b/src/audio_core/opus/decoder.cpp
index b7fed5304..0c110cbeb 100644
--- a/src/audio_core/opus/decoder.cpp
+++ b/src/audio_core/opus/decoder.cpp
@@ -28,8 +28,8 @@ OpusDecoder::~OpusDecoder() {
     }
 }
 
-Result OpusDecoder::Initialize(OpusParametersEx& params, Kernel::KTransferMemory* transfer_memory,
-                               u64 transfer_memory_size) {
+Result OpusDecoder::Initialize(const OpusParametersEx& params,
+                               Kernel::KTransferMemory* transfer_memory, u64 transfer_memory_size) {
     auto frame_size{params.use_large_frame_size ? 5760 : 1920};
     shared_buffer_size = transfer_memory_size;
     shared_buffer = std::make_unique<u8[]>(shared_buffer_size);
@@ -59,7 +59,7 @@ Result OpusDecoder::Initialize(OpusParametersEx& params, Kernel::KTransferMemory
     R_SUCCEED();
 }
 
-Result OpusDecoder::Initialize(OpusMultiStreamParametersEx& params,
+Result OpusDecoder::Initialize(const OpusMultiStreamParametersEx& params,
                                Kernel::KTransferMemory* transfer_memory, u64 transfer_memory_size) {
     auto frame_size{params.use_large_frame_size ? 5760 : 1920};
     shared_buffer_size = transfer_memory_size;
diff --git a/src/audio_core/opus/decoder.h b/src/audio_core/opus/decoder.h
index fd728958a..1b8c257d4 100644
--- a/src/audio_core/opus/decoder.h
+++ b/src/audio_core/opus/decoder.h
@@ -22,10 +22,10 @@ public:
     explicit OpusDecoder(Core::System& system, HardwareOpus& hardware_opus_);
     ~OpusDecoder();
 
-    Result Initialize(OpusParametersEx& params, Kernel::KTransferMemory* transfer_memory,
-                      u64 transfer_memory_size);
-    Result Initialize(OpusMultiStreamParametersEx& params, Kernel::KTransferMemory* transfer_memory,
+    Result Initialize(const OpusParametersEx& params, Kernel::KTransferMemory* transfer_memory,
                       u64 transfer_memory_size);
+    Result Initialize(const OpusMultiStreamParametersEx& params,
+                      Kernel::KTransferMemory* transfer_memory, u64 transfer_memory_size);
     Result DecodeInterleaved(u32* out_data_size, u64* out_time_taken, u32* out_sample_count,
                              std::span<const u8> input_data, std::span<u8> output_data, bool reset);
     Result SetContext([[maybe_unused]] std::span<const u8> context);
diff --git a/src/audio_core/opus/decoder_manager.cpp b/src/audio_core/opus/decoder_manager.cpp
index 1464880a1..89eec1298 100644
--- a/src/audio_core/opus/decoder_manager.cpp
+++ b/src/audio_core/opus/decoder_manager.cpp
@@ -38,7 +38,7 @@ OpusDecoderManager::OpusDecoderManager(Core::System& system_)
     }
 }
 
-Result OpusDecoderManager::GetWorkBufferSize(OpusParameters& params, u64& out_size) {
+Result OpusDecoderManager::GetWorkBufferSize(const OpusParameters& params, u32& out_size) {
     OpusParametersEx ex{
         .sample_rate = params.sample_rate,
         .channel_count = params.channel_count,
@@ -47,11 +47,11 @@ Result OpusDecoderManager::GetWorkBufferSize(OpusParameters& params, u64& out_si
     R_RETURN(GetWorkBufferSizeExEx(ex, out_size));
 }
 
-Result OpusDecoderManager::GetWorkBufferSizeEx(OpusParametersEx& params, u64& out_size) {
+Result OpusDecoderManager::GetWorkBufferSizeEx(const OpusParametersEx& params, u32& out_size) {
     R_RETURN(GetWorkBufferSizeExEx(params, out_size));
 }
 
-Result OpusDecoderManager::GetWorkBufferSizeExEx(OpusParametersEx& params, u64& out_size) {
+Result OpusDecoderManager::GetWorkBufferSizeExEx(const OpusParametersEx& params, u32& out_size) {
     R_UNLESS(IsValidChannelCount(params.channel_count), ResultInvalidOpusChannelCount);
     R_UNLESS(IsValidSampleRate(params.sample_rate), ResultInvalidOpusSampleRate);
 
@@ -63,8 +63,8 @@ Result OpusDecoderManager::GetWorkBufferSizeExEx(OpusParametersEx& params, u64&
     R_SUCCEED();
 }
 
-Result OpusDecoderManager::GetWorkBufferSizeForMultiStream(OpusMultiStreamParameters& params,
-                                                           u64& out_size) {
+Result OpusDecoderManager::GetWorkBufferSizeForMultiStream(const OpusMultiStreamParameters& params,
+                                                           u32& out_size) {
     OpusMultiStreamParametersEx ex{
         .sample_rate = params.sample_rate,
         .channel_count = params.channel_count,
@@ -76,13 +76,13 @@ Result OpusDecoderManager::GetWorkBufferSizeForMultiStream(OpusMultiStreamParame
     R_RETURN(GetWorkBufferSizeForMultiStreamExEx(ex, out_size));
 }
 
-Result OpusDecoderManager::GetWorkBufferSizeForMultiStreamEx(OpusMultiStreamParametersEx& params,
-                                                             u64& out_size) {
+Result OpusDecoderManager::GetWorkBufferSizeForMultiStreamEx(
+    const OpusMultiStreamParametersEx& params, u32& out_size) {
     R_RETURN(GetWorkBufferSizeForMultiStreamExEx(params, out_size));
 }
 
-Result OpusDecoderManager::GetWorkBufferSizeForMultiStreamExEx(OpusMultiStreamParametersEx& params,
-                                                               u64& out_size) {
+Result OpusDecoderManager::GetWorkBufferSizeForMultiStreamExEx(
+    const OpusMultiStreamParametersEx& params, u32& out_size) {
     R_UNLESS(IsValidMultiStreamChannelCount(params.channel_count), ResultInvalidOpusChannelCount);
     R_UNLESS(IsValidSampleRate(params.sample_rate), ResultInvalidOpusSampleRate);
     R_UNLESS(IsValidStreamCount(params.channel_count, params.total_stream_count,
diff --git a/src/audio_core/opus/decoder_manager.h b/src/audio_core/opus/decoder_manager.h
index 70ebc4bab..8f6876d5c 100644
--- a/src/audio_core/opus/decoder_manager.h
+++ b/src/audio_core/opus/decoder_manager.h
@@ -22,17 +22,19 @@ public:
         return hardware_opus;
     }
 
-    Result GetWorkBufferSize(OpusParameters& params, u64& out_size);
-    Result GetWorkBufferSizeEx(OpusParametersEx& params, u64& out_size);
-    Result GetWorkBufferSizeExEx(OpusParametersEx& params, u64& out_size);
-    Result GetWorkBufferSizeForMultiStream(OpusMultiStreamParameters& params, u64& out_size);
-    Result GetWorkBufferSizeForMultiStreamEx(OpusMultiStreamParametersEx& params, u64& out_size);
-    Result GetWorkBufferSizeForMultiStreamExEx(OpusMultiStreamParametersEx& params, u64& out_size);
+    Result GetWorkBufferSize(const OpusParameters& params, u32& out_size);
+    Result GetWorkBufferSizeEx(const OpusParametersEx& params, u32& out_size);
+    Result GetWorkBufferSizeExEx(const OpusParametersEx& params, u32& out_size);
+    Result GetWorkBufferSizeForMultiStream(const OpusMultiStreamParameters& params, u32& out_size);
+    Result GetWorkBufferSizeForMultiStreamEx(const OpusMultiStreamParametersEx& params,
+                                             u32& out_size);
+    Result GetWorkBufferSizeForMultiStreamExEx(const OpusMultiStreamParametersEx& params,
+                                               u32& out_size);
 
 private:
     Core::System& system;
     HardwareOpus hardware_opus;
-    std::array<u64, MaxChannels> required_workbuffer_sizes{};
+    std::array<u32, MaxChannels> required_workbuffer_sizes{};
 };
 
 } // namespace AudioCore::OpusDecoder
diff --git a/src/audio_core/opus/hardware_opus.cpp b/src/audio_core/opus/hardware_opus.cpp
index 5ff71ab2d..30805f4a3 100644
--- a/src/audio_core/opus/hardware_opus.cpp
+++ b/src/audio_core/opus/hardware_opus.cpp
@@ -42,7 +42,7 @@ HardwareOpus::HardwareOpus(Core::System& system_)
     opus_decoder.SetSharedMemory(shared_memory);
 }
 
-u64 HardwareOpus::GetWorkBufferSize(u32 channel) {
+u32 HardwareOpus::GetWorkBufferSize(u32 channel) {
     if (!opus_decoder.IsRunning()) {
         return 0;
     }
@@ -55,10 +55,10 @@ u64 HardwareOpus::GetWorkBufferSize(u32 channel) {
                   ADSP::OpusDecoder::Message::GetWorkBufferSizeOK, msg);
         return 0;
     }
-    return shared_memory.dsp_return_data[0];
+    return static_cast<u32>(shared_memory.dsp_return_data[0]);
 }
 
-u64 HardwareOpus::GetWorkBufferSizeForMultiStream(u32 total_stream_count, u32 stereo_stream_count) {
+u32 HardwareOpus::GetWorkBufferSizeForMultiStream(u32 total_stream_count, u32 stereo_stream_count) {
     std::scoped_lock l{mutex};
     shared_memory.host_send_data[0] = total_stream_count;
     shared_memory.host_send_data[1] = stereo_stream_count;
@@ -70,7 +70,7 @@ u64 HardwareOpus::GetWorkBufferSizeForMultiStream(u32 total_stream_count, u32 st
                   ADSP::OpusDecoder::Message::GetWorkBufferSizeForMultiStreamOK, msg);
         return 0;
     }
-    return shared_memory.dsp_return_data[0];
+    return static_cast<u32>(shared_memory.dsp_return_data[0]);
 }
 
 Result HardwareOpus::InitializeDecodeObject(u32 sample_rate, u32 channel_count, void* buffer,
@@ -94,8 +94,9 @@ Result HardwareOpus::InitializeDecodeObject(u32 sample_rate, u32 channel_count,
 
 Result HardwareOpus::InitializeMultiStreamDecodeObject(u32 sample_rate, u32 channel_count,
                                                        u32 total_stream_count,
-                                                       u32 stereo_stream_count, void* mappings,
-                                                       void* buffer, u64 buffer_size) {
+                                                       u32 stereo_stream_count,
+                                                       const void* mappings, void* buffer,
+                                                       u64 buffer_size) {
     std::scoped_lock l{mutex};
     shared_memory.host_send_data[0] = (u64)buffer;
     shared_memory.host_send_data[1] = buffer_size;
diff --git a/src/audio_core/opus/hardware_opus.h b/src/audio_core/opus/hardware_opus.h
index b10184baa..caa746840 100644
--- a/src/audio_core/opus/hardware_opus.h
+++ b/src/audio_core/opus/hardware_opus.h
@@ -16,14 +16,14 @@ class HardwareOpus {
 public:
     HardwareOpus(Core::System& system);
 
-    u64 GetWorkBufferSize(u32 channel);
-    u64 GetWorkBufferSizeForMultiStream(u32 total_stream_count, u32 stereo_stream_count);
+    u32 GetWorkBufferSize(u32 channel);
+    u32 GetWorkBufferSizeForMultiStream(u32 total_stream_count, u32 stereo_stream_count);
 
     Result InitializeDecodeObject(u32 sample_rate, u32 channel_count, void* buffer,
                                   u64 buffer_size);
     Result InitializeMultiStreamDecodeObject(u32 sample_rate, u32 channel_count,
                                              u32 totaL_stream_count, u32 stereo_stream_count,
-                                             void* mappings, void* buffer, u64 buffer_size);
+                                             const void* mappings, void* buffer, u64 buffer_size);
     Result ShutdownDecodeObject(void* buffer, u64 buffer_size);
     Result ShutdownMultiStreamDecodeObject(void* buffer, u64 buffer_size);
     Result DecodeInterleaved(u32& out_sample_count, void* output_data, u64 output_data_size,
diff --git a/src/core/hle/service/audio/audio_controller.cpp b/src/core/hle/service/audio/audio_controller.cpp
index a6da66d0f..d51c89118 100644
--- a/src/core/hle/service/audio/audio_controller.cpp
+++ b/src/core/hle/service/audio/audio_controller.cpp
@@ -16,23 +16,23 @@ IAudioController::IAudioController(Core::System& system_)
     static const FunctionInfo functions[] = {
         {0, nullptr, "GetTargetVolume"},
         {1, nullptr, "SetTargetVolume"},
-        {2, C<&IAudioController::GetTargetVolumeMin>, "GetTargetVolumeMin"},
-        {3, C<&IAudioController::GetTargetVolumeMax>, "GetTargetVolumeMax"},
+        {2, D<&IAudioController::GetTargetVolumeMin>, "GetTargetVolumeMin"},
+        {3, D<&IAudioController::GetTargetVolumeMax>, "GetTargetVolumeMax"},
         {4, nullptr, "IsTargetMute"},
         {5, nullptr, "SetTargetMute"},
         {6, nullptr, "IsTargetConnected"},
         {7, nullptr, "SetDefaultTarget"},
         {8, nullptr, "GetDefaultTarget"},
-        {9, C<&IAudioController::GetAudioOutputMode>, "GetAudioOutputMode"},
-        {10, C<&IAudioController::SetAudioOutputMode>, "SetAudioOutputMode"},
+        {9, D<&IAudioController::GetAudioOutputMode>, "GetAudioOutputMode"},
+        {10, D<&IAudioController::SetAudioOutputMode>, "SetAudioOutputMode"},
         {11, nullptr, "SetForceMutePolicy"},
-        {12, C<&IAudioController::GetForceMutePolicy>, "GetForceMutePolicy"},
-        {13, C<&IAudioController::GetOutputModeSetting>, "GetOutputModeSetting"},
-        {14, C<&IAudioController::SetOutputModeSetting>, "SetOutputModeSetting"},
+        {12, D<&IAudioController::GetForceMutePolicy>, "GetForceMutePolicy"},
+        {13, D<&IAudioController::GetOutputModeSetting>, "GetOutputModeSetting"},
+        {14, D<&IAudioController::SetOutputModeSetting>, "SetOutputModeSetting"},
         {15, nullptr, "SetOutputTarget"},
         {16, nullptr, "SetInputTargetForceEnabled"},
-        {17, C<&IAudioController::SetHeadphoneOutputLevelMode>, "SetHeadphoneOutputLevelMode"},
-        {18, C<&IAudioController::GetHeadphoneOutputLevelMode>, "GetHeadphoneOutputLevelMode"},
+        {17, D<&IAudioController::SetHeadphoneOutputLevelMode>, "SetHeadphoneOutputLevelMode"},
+        {18, D<&IAudioController::GetHeadphoneOutputLevelMode>, "GetHeadphoneOutputLevelMode"},
         {19, nullptr, "AcquireAudioVolumeUpdateEventForPlayReport"},
         {20, nullptr, "AcquireAudioOutputDeviceUpdateEventForPlayReport"},
         {21, nullptr, "GetAudioOutputTargetForPlayReport"},
@@ -44,11 +44,11 @@ IAudioController::IAudioController(Core::System& system_)
         {27, nullptr, "SetVolumeMappingTableForDev"},
         {28, nullptr, "GetAudioOutputChannelCountForPlayReport"},
         {29, nullptr, "BindAudioOutputChannelCountUpdateEventForPlayReport"},
-        {30, C<&IAudioController::SetSpeakerAutoMuteEnabled>, "SetSpeakerAutoMuteEnabled"},
-        {31, C<&IAudioController::IsSpeakerAutoMuteEnabled>, "IsSpeakerAutoMuteEnabled"},
+        {30, D<&IAudioController::SetSpeakerAutoMuteEnabled>, "SetSpeakerAutoMuteEnabled"},
+        {31, D<&IAudioController::IsSpeakerAutoMuteEnabled>, "IsSpeakerAutoMuteEnabled"},
         {32, nullptr, "GetActiveOutputTarget"},
         {33, nullptr, "GetTargetDeviceInfo"},
-        {34, C<&IAudioController::AcquireTargetNotification>, "AcquireTargetNotification"},
+        {34, D<&IAudioController::AcquireTargetNotification>, "AcquireTargetNotification"},
         {35, nullptr, "SetHearingProtectionSafeguardTimerRemainingTimeForDebug"},
         {36, nullptr, "GetHearingProtectionSafeguardTimerRemainingTimeForDebug"},
         {37, nullptr, "SetHearingProtectionSafeguardEnabled"},
diff --git a/src/core/hle/service/audio/audio_in.cpp b/src/core/hle/service/audio/audio_in.cpp
index 31d136077..9240cc336 100644
--- a/src/core/hle/service/audio/audio_in.cpp
+++ b/src/core/hle/service/audio/audio_in.cpp
@@ -16,21 +16,21 @@ IAudioIn::IAudioIn(Core::System& system_, Manager& manager, size_t session_id,
       impl{std::make_shared<In>(system_, manager, event, session_id)} {
     // clang-format off
     static const FunctionInfo functions[] = {
-        {0, C<&IAudioIn::GetAudioInState>, "GetAudioInState"},
-        {1, C<&IAudioIn::Start>, "Start"},
-        {2, C<&IAudioIn::Stop>, "Stop"},
-        {3, C<&IAudioIn::AppendAudioInBuffer>, "AppendAudioInBuffer"},
-        {4, C<&IAudioIn::RegisterBufferEvent>, "RegisterBufferEvent"},
-        {5, C<&IAudioIn::GetReleasedAudioInBuffers>, "GetReleasedAudioInBuffers"},
-        {6, C<&IAudioIn::ContainsAudioInBuffer>, "ContainsAudioInBuffer"},
-        {7, C<&IAudioIn::AppendAudioInBuffer>, "AppendUacInBuffer"},
-        {8, C<&IAudioIn::AppendAudioInBufferAuto>, "AppendAudioInBufferAuto"},
-        {9, C<&IAudioIn::GetReleasedAudioInBuffersAuto>, "GetReleasedAudioInBuffersAuto"},
-        {10, C<&IAudioIn::AppendAudioInBufferAuto>, "AppendUacInBufferAuto"},
-        {11, C<&IAudioIn::GetAudioInBufferCount>, "GetAudioInBufferCount"},
-        {12, C<&IAudioIn::SetDeviceGain>, "SetDeviceGain"},
-        {13, C<&IAudioIn::GetDeviceGain>, "GetDeviceGain"},
-        {14, C<&IAudioIn::FlushAudioInBuffers>, "FlushAudioInBuffers"},
+        {0, D<&IAudioIn::GetAudioInState>, "GetAudioInState"},
+        {1, D<&IAudioIn::Start>, "Start"},
+        {2, D<&IAudioIn::Stop>, "Stop"},
+        {3, D<&IAudioIn::AppendAudioInBuffer>, "AppendAudioInBuffer"},
+        {4, D<&IAudioIn::RegisterBufferEvent>, "RegisterBufferEvent"},
+        {5, D<&IAudioIn::GetReleasedAudioInBuffers>, "GetReleasedAudioInBuffers"},
+        {6, D<&IAudioIn::ContainsAudioInBuffer>, "ContainsAudioInBuffer"},
+        {7, D<&IAudioIn::AppendAudioInBuffer>, "AppendUacInBuffer"},
+        {8, D<&IAudioIn::AppendAudioInBufferAuto>, "AppendAudioInBufferAuto"},
+        {9, D<&IAudioIn::GetReleasedAudioInBuffersAuto>, "GetReleasedAudioInBuffersAuto"},
+        {10, D<&IAudioIn::AppendAudioInBufferAuto>, "AppendUacInBufferAuto"},
+        {11, D<&IAudioIn::GetAudioInBufferCount>, "GetAudioInBufferCount"},
+        {12, D<&IAudioIn::SetDeviceGain>, "SetDeviceGain"},
+        {13, D<&IAudioIn::GetDeviceGain>, "GetDeviceGain"},
+        {14, D<&IAudioIn::FlushAudioInBuffers>, "FlushAudioInBuffers"},
     };
     // clang-format on
 
diff --git a/src/core/hle/service/audio/audio_in_manager.cpp b/src/core/hle/service/audio/audio_in_manager.cpp
index 0379a2f68..9b67af367 100644
--- a/src/core/hle/service/audio/audio_in_manager.cpp
+++ b/src/core/hle/service/audio/audio_in_manager.cpp
@@ -14,12 +14,12 @@ IAudioInManager::IAudioInManager(Core::System& system_)
       impl{std::make_unique<AudioCore::AudioIn::Manager>(system_)} {
     // clang-format off
     static const FunctionInfo functions[] = {
-        {0, C<&IAudioInManager::ListAudioIns>, "ListAudioIns"},
-        {1, C<&IAudioInManager::OpenAudioIn>, "OpenAudioIn"},
-        {2, C<&IAudioInManager::ListAudioIns>, "ListAudioInsAuto"},
-        {3, C<&IAudioInManager::OpenAudioIn>, "OpenAudioInAuto"},
-        {4, C<&IAudioInManager::ListAudioInsAutoFiltered>, "ListAudioInsAutoFiltered"},
-        {5, C<&IAudioInManager::OpenAudioInProtocolSpecified>, "OpenAudioInProtocolSpecified"},
+        {0, D<&IAudioInManager::ListAudioIns>, "ListAudioIns"},
+        {1, D<&IAudioInManager::OpenAudioIn>, "OpenAudioIn"},
+        {2, D<&IAudioInManager::ListAudioIns>, "ListAudioInsAuto"},
+        {3, D<&IAudioInManager::OpenAudioIn>, "OpenAudioInAuto"},
+        {4, D<&IAudioInManager::ListAudioInsAutoFiltered>, "ListAudioInsAutoFiltered"},
+        {5, D<&IAudioInManager::OpenAudioInProtocolSpecified>, "OpenAudioInProtocolSpecified"},
     };
     // clang-format on
 
diff --git a/src/core/hle/service/audio/audio_out.cpp b/src/core/hle/service/audio/audio_out.cpp
index cd2dc1f6f..53009d5d7 100644
--- a/src/core/hle/service/audio/audio_out.cpp
+++ b/src/core/hle/service/audio/audio_out.cpp
@@ -21,20 +21,20 @@ IAudioOut::IAudioOut(Core::System& system_, Manager& manager, size_t session_id,
 
     // clang-format off
     static const FunctionInfo functions[] = {
-        {0, C<&IAudioOut::GetAudioOutState>, "GetAudioOutState"},
-        {1, C<&IAudioOut::Start>, "Start"},
-        {2, C<&IAudioOut::Stop>, "Stop"},
-        {3, C<&IAudioOut::AppendAudioOutBuffer>, "AppendAudioOutBuffer"},
-        {4, C<&IAudioOut::RegisterBufferEvent>, "RegisterBufferEvent"},
-        {5, C<&IAudioOut::GetReleasedAudioOutBuffers>, "GetReleasedAudioOutBuffers"},
-        {6, C<&IAudioOut::ContainsAudioOutBuffer>, "ContainsAudioOutBuffer"},
-        {7, C<&IAudioOut::AppendAudioOutBufferAuto>, "AppendAudioOutBufferAuto"},
-        {8, C<&IAudioOut::GetReleasedAudioOutBuffersAuto>, "GetReleasedAudioOutBuffersAuto"},
-        {9, C<&IAudioOut::GetAudioOutBufferCount>, "GetAudioOutBufferCount"},
-        {10, C<&IAudioOut::GetAudioOutPlayedSampleCount>, "GetAudioOutPlayedSampleCount"},
-        {11, C<&IAudioOut::FlushAudioOutBuffers>, "FlushAudioOutBuffers"},
-        {12, C<&IAudioOut::SetAudioOutVolume>, "SetAudioOutVolume"},
-        {13, C<&IAudioOut::GetAudioOutVolume>, "GetAudioOutVolume"},
+        {0, D<&IAudioOut::GetAudioOutState>, "GetAudioOutState"},
+        {1, D<&IAudioOut::Start>, "Start"},
+        {2, D<&IAudioOut::Stop>, "Stop"},
+        {3, D<&IAudioOut::AppendAudioOutBuffer>, "AppendAudioOutBuffer"},
+        {4, D<&IAudioOut::RegisterBufferEvent>, "RegisterBufferEvent"},
+        {5, D<&IAudioOut::GetReleasedAudioOutBuffers>, "GetReleasedAudioOutBuffers"},
+        {6, D<&IAudioOut::ContainsAudioOutBuffer>, "ContainsAudioOutBuffer"},
+        {7, D<&IAudioOut::AppendAudioOutBufferAuto>, "AppendAudioOutBufferAuto"},
+        {8, D<&IAudioOut::GetReleasedAudioOutBuffersAuto>, "GetReleasedAudioOutBuffersAuto"},
+        {9, D<&IAudioOut::GetAudioOutBufferCount>, "GetAudioOutBufferCount"},
+        {10, D<&IAudioOut::GetAudioOutPlayedSampleCount>, "GetAudioOutPlayedSampleCount"},
+        {11, D<&IAudioOut::FlushAudioOutBuffers>, "FlushAudioOutBuffers"},
+        {12, D<&IAudioOut::SetAudioOutVolume>, "SetAudioOutVolume"},
+        {13, D<&IAudioOut::GetAudioOutVolume>, "GetAudioOutVolume"},
     };
     // clang-format on
     RegisterHandlers(functions);
diff --git a/src/core/hle/service/audio/audio_out_manager.cpp b/src/core/hle/service/audio/audio_out_manager.cpp
index 89cd6df94..780e1dcda 100644
--- a/src/core/hle/service/audio/audio_out_manager.cpp
+++ b/src/core/hle/service/audio/audio_out_manager.cpp
@@ -14,10 +14,10 @@ IAudioOutManager::IAudioOutManager(Core::System& system_)
     : ServiceFramework{system_, "audout:u"}, impl{std::make_unique<Manager>(system_)} {
     // clang-format off
     static const FunctionInfo functions[] = {
-        {0, C<&IAudioOutManager::ListAudioOuts>, "ListAudioOuts"},
-        {1, C<&IAudioOutManager::OpenAudioOut>, "OpenAudioOut"},
-        {2, C<&IAudioOutManager::ListAudioOutsAuto>, "ListAudioOutsAuto"},
-        {3, C<&IAudioOutManager::OpenAudioOutAuto>, "OpenAudioOutAuto"},
+        {0, D<&IAudioOutManager::ListAudioOuts>, "ListAudioOuts"},
+        {1, D<&IAudioOutManager::OpenAudioOut>, "OpenAudioOut"},
+        {2, D<&IAudioOutManager::ListAudioOutsAuto>, "ListAudioOutsAuto"},
+        {3, D<&IAudioOutManager::OpenAudioOutAuto>, "OpenAudioOutAuto"},
     };
     // clang-format on
 
diff --git a/src/core/hle/service/audio/audio_renderer.cpp b/src/core/hle/service/audio/audio_renderer.cpp
index fc20054b4..b78660cea 100644
--- a/src/core/hle/service/audio/audio_renderer.cpp
+++ b/src/core/hle/service/audio/audio_renderer.cpp
@@ -18,20 +18,20 @@ IAudioRenderer::IAudioRenderer(Core::System& system_, Manager& manager_,
       process_handle{process_handle_} {
     // clang-format off
     static const FunctionInfo functions[] = {
-        {0, C<&IAudioRenderer::GetSampleRate>, "GetSampleRate"},
-        {1, C<&IAudioRenderer::GetSampleCount>, "GetSampleCount"},
-        {2, C<&IAudioRenderer::GetMixBufferCount>, "GetMixBufferCount"},
-        {3, C<&IAudioRenderer::GetState>, "GetState"},
-        {4, C<&IAudioRenderer::RequestUpdate>, "RequestUpdate"},
-        {5, C<&IAudioRenderer::Start>, "Start"},
-        {6, C<&IAudioRenderer::Stop>, "Stop"},
-        {7, C<&IAudioRenderer::QuerySystemEvent>, "QuerySystemEvent"},
-        {8, C<&IAudioRenderer::SetRenderingTimeLimit>, "SetRenderingTimeLimit"},
-        {9, C<&IAudioRenderer::GetRenderingTimeLimit>, "GetRenderingTimeLimit"},
-        {10, C<&IAudioRenderer::RequestUpdateAuto>, "RequestUpdateAuto"},
+        {0, D<&IAudioRenderer::GetSampleRate>, "GetSampleRate"},
+        {1, D<&IAudioRenderer::GetSampleCount>, "GetSampleCount"},
+        {2, D<&IAudioRenderer::GetMixBufferCount>, "GetMixBufferCount"},
+        {3, D<&IAudioRenderer::GetState>, "GetState"},
+        {4, D<&IAudioRenderer::RequestUpdate>, "RequestUpdate"},
+        {5, D<&IAudioRenderer::Start>, "Start"},
+        {6, D<&IAudioRenderer::Stop>, "Stop"},
+        {7, D<&IAudioRenderer::QuerySystemEvent>, "QuerySystemEvent"},
+        {8, D<&IAudioRenderer::SetRenderingTimeLimit>, "SetRenderingTimeLimit"},
+        {9, D<&IAudioRenderer::GetRenderingTimeLimit>, "GetRenderingTimeLimit"},
+        {10, D<&IAudioRenderer::RequestUpdateAuto>, "RequestUpdateAuto"},
         {11, nullptr, "ExecuteAudioRendererRendering"},
-        {12, C<&IAudioRenderer::SetVoiceDropParameter>, "SetVoiceDropParameter"},
-        {13, C<&IAudioRenderer::GetVoiceDropParameter>, "GetVoiceDropParameter"},
+        {12, D<&IAudioRenderer::SetVoiceDropParameter>, "SetVoiceDropParameter"},
+        {13, D<&IAudioRenderer::GetVoiceDropParameter>, "GetVoiceDropParameter"},
     };
     // clang-format on
     RegisterHandlers(functions);
diff --git a/src/core/hle/service/audio/audio_renderer_manager.cpp b/src/core/hle/service/audio/audio_renderer_manager.cpp
index 3129169a4..6a1345c07 100644
--- a/src/core/hle/service/audio/audio_renderer_manager.cpp
+++ b/src/core/hle/service/audio/audio_renderer_manager.cpp
@@ -18,11 +18,11 @@ IAudioRendererManager::IAudioRendererManager(Core::System& system_)
     : ServiceFramework{system_, "audren:u"}, impl{std::make_unique<Manager>(system_)} {
     // clang-format off
     static const FunctionInfo functions[] = {
-        {0, C<&IAudioRendererManager::OpenAudioRenderer>, "OpenAudioRenderer"},
-        {1, C<&IAudioRendererManager::GetWorkBufferSize>, "GetWorkBufferSize"},
-        {2, C<&IAudioRendererManager::GetAudioDeviceService>, "GetAudioDeviceService"},
+        {0, D<&IAudioRendererManager::OpenAudioRenderer>, "OpenAudioRenderer"},
+        {1, D<&IAudioRendererManager::GetWorkBufferSize>, "GetWorkBufferSize"},
+        {2, D<&IAudioRendererManager::GetAudioDeviceService>, "GetAudioDeviceService"},
         {3, nullptr, "OpenAudioRendererForManualExecution"},
-        {4, C<&IAudioRendererManager::GetAudioDeviceServiceWithRevisionInfo>, "GetAudioDeviceServiceWithRevisionInfo"},
+        {4, D<&IAudioRendererManager::GetAudioDeviceServiceWithRevisionInfo>, "GetAudioDeviceServiceWithRevisionInfo"},
     };
     // clang-format on
 
diff --git a/src/core/hle/service/audio/hardware_opus_decoder.cpp b/src/core/hle/service/audio/hardware_opus_decoder.cpp
index 876bfe334..e398511a6 100644
--- a/src/core/hle/service/audio/hardware_opus_decoder.cpp
+++ b/src/core/hle/service/audio/hardware_opus_decoder.cpp
@@ -31,13 +31,13 @@ IHardwareOpusDecoder::IHardwareOpusDecoder(Core::System& system_, HardwareOpus&
 
 IHardwareOpusDecoder::~IHardwareOpusDecoder() = default;
 
-Result IHardwareOpusDecoder::Initialize(OpusParametersEx& params,
+Result IHardwareOpusDecoder::Initialize(const OpusParametersEx& params,
                                         Kernel::KTransferMemory* transfer_memory,
                                         u64 transfer_memory_size) {
     return impl->Initialize(params, transfer_memory, transfer_memory_size);
 }
 
-Result IHardwareOpusDecoder::Initialize(OpusMultiStreamParametersEx& params,
+Result IHardwareOpusDecoder::Initialize(const OpusMultiStreamParametersEx& params,
                                         Kernel::KTransferMemory* transfer_memory,
                                         u64 transfer_memory_size) {
     return impl->Initialize(params, transfer_memory, transfer_memory_size);
diff --git a/src/core/hle/service/audio/hardware_opus_decoder.h b/src/core/hle/service/audio/hardware_opus_decoder.h
index fe6636ce6..121858a6f 100644
--- a/src/core/hle/service/audio/hardware_opus_decoder.h
+++ b/src/core/hle/service/audio/hardware_opus_decoder.h
@@ -14,9 +14,9 @@ public:
                                   AudioCore::OpusDecoder::HardwareOpus& hardware_opus);
     ~IHardwareOpusDecoder() override;
 
-    Result Initialize(AudioCore::OpusDecoder::OpusParametersEx& params,
+    Result Initialize(const AudioCore::OpusDecoder::OpusParametersEx& params,
                       Kernel::KTransferMemory* transfer_memory, u64 transfer_memory_size);
-    Result Initialize(AudioCore::OpusDecoder::OpusMultiStreamParametersEx& params,
+    Result Initialize(const AudioCore::OpusDecoder::OpusMultiStreamParametersEx& params,
                       Kernel::KTransferMemory* transfer_memory, u64 transfer_memory_size);
 
 private:
diff --git a/src/core/hle/service/audio/hardware_opus_decoder_manager.cpp b/src/core/hle/service/audio/hardware_opus_decoder_manager.cpp
index 6d7205cd2..9de72e30f 100644
--- a/src/core/hle/service/audio/hardware_opus_decoder_manager.cpp
+++ b/src/core/hle/service/audio/hardware_opus_decoder_manager.cpp
@@ -3,241 +3,154 @@
 
 #include "core/hle/service/audio/hardware_opus_decoder.h"
 #include "core/hle/service/audio/hardware_opus_decoder_manager.h"
-#include "core/hle/service/ipc_helpers.h"
+#include "core/hle/service/cmif_serialization.h"
 
 namespace Service::Audio {
 
 using namespace AudioCore::OpusDecoder;
 
-void IHardwareOpusDecoderManager::OpenHardwareOpusDecoder(HLERequestContext& ctx) {
-    IPC::RequestParser rp{ctx};
+IHardwareOpusDecoderManager::IHardwareOpusDecoderManager(Core::System& system_)
+    : ServiceFramework{system_, "hwopus"}, system{system_}, impl{system} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, D<&IHardwareOpusDecoderManager::OpenHardwareOpusDecoder>, "OpenHardwareOpusDecoder"},
+        {1, D<&IHardwareOpusDecoderManager::GetWorkBufferSize>, "GetWorkBufferSize"},
+        {2, D<&IHardwareOpusDecoderManager::OpenHardwareOpusDecoderForMultiStream>, "OpenOpusDecoderForMultiStream"},
+        {3, D<&IHardwareOpusDecoderManager::GetWorkBufferSizeForMultiStream>, "GetWorkBufferSizeForMultiStream"},
+        {4, D<&IHardwareOpusDecoderManager::OpenHardwareOpusDecoderEx>, "OpenHardwareOpusDecoderEx"},
+        {5, D<&IHardwareOpusDecoderManager::GetWorkBufferSizeEx>, "GetWorkBufferSizeEx"},
+        {6, D<&IHardwareOpusDecoderManager::OpenHardwareOpusDecoderForMultiStreamEx>, "OpenHardwareOpusDecoderForMultiStreamEx"},
+        {7, D<&IHardwareOpusDecoderManager::GetWorkBufferSizeForMultiStreamEx>, "GetWorkBufferSizeForMultiStreamEx"},
+        {8, D<&IHardwareOpusDecoderManager::GetWorkBufferSizeExEx>, "GetWorkBufferSizeExEx"},
+        {9, D<&IHardwareOpusDecoderManager::GetWorkBufferSizeForMultiStreamExEx>, "GetWorkBufferSizeForMultiStreamExEx"},
+    };
+    // clang-format on
+    RegisterHandlers(functions);
+}
 
-    auto params = rp.PopRaw<OpusParameters>();
-    auto transfer_memory_size{rp.Pop<u32>()};
-    auto transfer_memory_handle{ctx.GetCopyHandle(0)};
-    auto transfer_memory{ctx.GetObjectFromHandle<Kernel::KTransferMemory>(transfer_memory_handle)};
+IHardwareOpusDecoderManager::~IHardwareOpusDecoderManager() = default;
 
-    LOG_DEBUG(Service_Audio, "sample_rate {} channel_count {} transfer_memory_size 0x{:X}",
-              params.sample_rate, params.channel_count, transfer_memory_size);
+Result IHardwareOpusDecoderManager::OpenHardwareOpusDecoder(
+    Out<SharedPointer<IHardwareOpusDecoder>> out_decoder, OpusParameters params, u32 tmem_size,
+    InCopyHandle<Kernel::KTransferMemory> tmem_handle) {
+    LOG_DEBUG(Service_Audio, "sample_rate {} channel_count {} transfer_memory_size {:#x}",
+              params.sample_rate, params.channel_count, tmem_size);
 
     auto decoder{std::make_shared<IHardwareOpusDecoder>(system, impl.GetHardwareOpus())};
-
     OpusParametersEx ex{
         .sample_rate = params.sample_rate,
         .channel_count = params.channel_count,
         .use_large_frame_size = false,
     };
-    auto result = decoder->Initialize(ex, transfer_memory.GetPointerUnsafe(), transfer_memory_size);
+    R_TRY(decoder->Initialize(ex, tmem_handle.Get(), tmem_size));
 
-    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
-    rb.Push(result);
-    rb.PushIpcInterface(decoder);
+    *out_decoder = decoder;
+    R_SUCCEED();
 }
 
-void IHardwareOpusDecoderManager::GetWorkBufferSize(HLERequestContext& ctx) {
-    IPC::RequestParser rp{ctx};
-    auto params = rp.PopRaw<OpusParameters>();
-
-    u64 size{};
-    auto result = impl.GetWorkBufferSize(params, size);
-
-    LOG_DEBUG(Service_Audio, "sample_rate {} channel_count {} -- returned size 0x{:X}",
-              params.sample_rate, params.channel_count, size);
-
-    IPC::ResponseBuilder rb{ctx, 4};
-    rb.Push(result);
-    rb.Push(size);
+Result IHardwareOpusDecoderManager::GetWorkBufferSize(Out<u32> out_size, OpusParameters params) {
+    R_TRY(impl.GetWorkBufferSize(params, *out_size));
+    LOG_DEBUG(Service_Audio, "sample_rate {} channel_count {} -- returned size {:#x}",
+              params.sample_rate, params.channel_count, *out_size);
+    R_SUCCEED();
 }
 
-void IHardwareOpusDecoderManager::OpenHardwareOpusDecoderForMultiStream(HLERequestContext& ctx) {
-    IPC::RequestParser rp{ctx};
-
-    auto input{ctx.ReadBuffer()};
-    OpusMultiStreamParameters params;
-    std::memcpy(&params, input.data(), sizeof(OpusMultiStreamParameters));
-
-    auto transfer_memory_size{rp.Pop<u32>()};
-    auto transfer_memory_handle{ctx.GetCopyHandle(0)};
-    auto transfer_memory{ctx.GetObjectFromHandle<Kernel::KTransferMemory>(transfer_memory_handle)};
-
+Result IHardwareOpusDecoderManager::OpenHardwareOpusDecoderForMultiStream(
+    Out<SharedPointer<IHardwareOpusDecoder>> out_decoder,
+    InLargeData<OpusMultiStreamParameters, BufferAttr_HipcPointer> params, u32 tmem_size,
+    InCopyHandle<Kernel::KTransferMemory> tmem_handle) {
     LOG_DEBUG(Service_Audio,
               "sample_rate {} channel_count {} total_stream_count {} stereo_stream_count {} "
-              "transfer_memory_size 0x{:X}",
-              params.sample_rate, params.channel_count, params.total_stream_count,
-              params.stereo_stream_count, transfer_memory_size);
+              "transfer_memory_size {:#x}",
+              params->sample_rate, params->channel_count, params->total_stream_count,
+              params->stereo_stream_count, tmem_size);
 
     auto decoder{std::make_shared<IHardwareOpusDecoder>(system, impl.GetHardwareOpus())};
 
     OpusMultiStreamParametersEx ex{
-        .sample_rate = params.sample_rate,
-        .channel_count = params.channel_count,
-        .total_stream_count = params.total_stream_count,
-        .stereo_stream_count = params.stereo_stream_count,
+        .sample_rate = params->sample_rate,
+        .channel_count = params->channel_count,
+        .total_stream_count = params->total_stream_count,
+        .stereo_stream_count = params->stereo_stream_count,
         .use_large_frame_size = false,
         .mappings{},
     };
-    std::memcpy(ex.mappings.data(), params.mappings.data(), sizeof(params.mappings));
-    auto result = decoder->Initialize(ex, transfer_memory.GetPointerUnsafe(), transfer_memory_size);
+    std::memcpy(ex.mappings.data(), params->mappings.data(), sizeof(params->mappings));
+    R_TRY(decoder->Initialize(ex, tmem_handle.Get(), tmem_size));
 
-    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
-    rb.Push(result);
-    rb.PushIpcInterface(decoder);
+    *out_decoder = decoder;
+    R_SUCCEED();
 }
 
-void IHardwareOpusDecoderManager::GetWorkBufferSizeForMultiStream(HLERequestContext& ctx) {
-    IPC::RequestParser rp{ctx};
-
-    auto input{ctx.ReadBuffer()};
-    OpusMultiStreamParameters params;
-    std::memcpy(&params, input.data(), sizeof(OpusMultiStreamParameters));
-
-    u64 size{};
-    auto result = impl.GetWorkBufferSizeForMultiStream(params, size);
-
-    LOG_DEBUG(Service_Audio, "size 0x{:X}", size);
-
-    IPC::ResponseBuilder rb{ctx, 4};
-    rb.Push(result);
-    rb.Push(size);
+Result IHardwareOpusDecoderManager::GetWorkBufferSizeForMultiStream(
+    Out<u32> out_size, InLargeData<OpusMultiStreamParameters, BufferAttr_HipcPointer> params) {
+    R_TRY(impl.GetWorkBufferSizeForMultiStream(*params, *out_size));
+    LOG_DEBUG(Service_Audio, "size {:#x}", *out_size);
+    R_SUCCEED();
 }
 
-void IHardwareOpusDecoderManager::OpenHardwareOpusDecoderEx(HLERequestContext& ctx) {
-    IPC::RequestParser rp{ctx};
-
-    auto params = rp.PopRaw<OpusParametersEx>();
-    auto transfer_memory_size{rp.Pop<u32>()};
-    auto transfer_memory_handle{ctx.GetCopyHandle(0)};
-    auto transfer_memory{ctx.GetObjectFromHandle<Kernel::KTransferMemory>(transfer_memory_handle)};
-
-    LOG_DEBUG(Service_Audio, "sample_rate {} channel_count {} transfer_memory_size 0x{:X}",
-              params.sample_rate, params.channel_count, transfer_memory_size);
+Result IHardwareOpusDecoderManager::OpenHardwareOpusDecoderEx(
+    Out<SharedPointer<IHardwareOpusDecoder>> out_decoder, OpusParametersEx params, u32 tmem_size,
+    InCopyHandle<Kernel::KTransferMemory> tmem_handle) {
+    LOG_DEBUG(Service_Audio, "sample_rate {} channel_count {} transfer_memory_size {:#x}",
+              params.sample_rate, params.channel_count, tmem_size);
 
     auto decoder{std::make_shared<IHardwareOpusDecoder>(system, impl.GetHardwareOpus())};
+    R_TRY(decoder->Initialize(params, tmem_handle.Get(), tmem_size));
 
-    auto result =
-        decoder->Initialize(params, transfer_memory.GetPointerUnsafe(), transfer_memory_size);
-
-    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
-    rb.Push(result);
-    rb.PushIpcInterface(decoder);
+    *out_decoder = decoder;
+    R_SUCCEED();
 }
 
-void IHardwareOpusDecoderManager::GetWorkBufferSizeEx(HLERequestContext& ctx) {
-    IPC::RequestParser rp{ctx};
-    auto params = rp.PopRaw<OpusParametersEx>();
-
-    u64 size{};
-    auto result = impl.GetWorkBufferSizeEx(params, size);
-
-    LOG_DEBUG(Service_Audio, "size 0x{:X}", size);
-
-    IPC::ResponseBuilder rb{ctx, 4};
-    rb.Push(result);
-    rb.Push(size);
+Result IHardwareOpusDecoderManager::GetWorkBufferSizeEx(Out<u32> out_size,
+                                                        OpusParametersEx params) {
+    R_TRY(impl.GetWorkBufferSizeEx(params, *out_size));
+    LOG_DEBUG(Service_Audio, "size {:#x}", *out_size);
+    R_SUCCEED();
 }
 
-void IHardwareOpusDecoderManager::OpenHardwareOpusDecoderForMultiStreamEx(HLERequestContext& ctx) {
-    IPC::RequestParser rp{ctx};
-
-    auto input{ctx.ReadBuffer()};
-    OpusMultiStreamParametersEx params;
-    std::memcpy(&params, input.data(), sizeof(OpusMultiStreamParametersEx));
-
-    auto transfer_memory_size{rp.Pop<u32>()};
-    auto transfer_memory_handle{ctx.GetCopyHandle(0)};
-    auto transfer_memory{ctx.GetObjectFromHandle<Kernel::KTransferMemory>(transfer_memory_handle)};
-
+Result IHardwareOpusDecoderManager::OpenHardwareOpusDecoderForMultiStreamEx(
+    Out<SharedPointer<IHardwareOpusDecoder>> out_decoder,
+    InLargeData<OpusMultiStreamParametersEx, BufferAttr_HipcPointer> params, u32 tmem_size,
+    InCopyHandle<Kernel::KTransferMemory> tmem_handle) {
     LOG_DEBUG(Service_Audio,
               "sample_rate {} channel_count {} total_stream_count {} stereo_stream_count {} "
               "use_large_frame_size {}"
-              "transfer_memory_size 0x{:X}",
-              params.sample_rate, params.channel_count, params.total_stream_count,
-              params.stereo_stream_count, params.use_large_frame_size, transfer_memory_size);
+              "transfer_memory_size {:#x}",
+              params->sample_rate, params->channel_count, params->total_stream_count,
+              params->stereo_stream_count, params->use_large_frame_size, tmem_size);
 
     auto decoder{std::make_shared<IHardwareOpusDecoder>(system, impl.GetHardwareOpus())};
 
-    auto result =
-        decoder->Initialize(params, transfer_memory.GetPointerUnsafe(), transfer_memory_size);
+    R_TRY(decoder->Initialize(*params, tmem_handle.Get(), tmem_size));
 
-    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
-    rb.Push(result);
-    rb.PushIpcInterface(decoder);
+    *out_decoder = decoder;
+    R_SUCCEED();
 }
 
-void IHardwareOpusDecoderManager::GetWorkBufferSizeForMultiStreamEx(HLERequestContext& ctx) {
-    IPC::RequestParser rp{ctx};
-
-    auto input{ctx.ReadBuffer()};
-    OpusMultiStreamParametersEx params;
-    std::memcpy(&params, input.data(), sizeof(OpusMultiStreamParametersEx));
-
-    u64 size{};
-    auto result = impl.GetWorkBufferSizeForMultiStreamEx(params, size);
-
+Result IHardwareOpusDecoderManager::GetWorkBufferSizeForMultiStreamEx(
+    Out<u32> out_size, InLargeData<OpusMultiStreamParametersEx, BufferAttr_HipcPointer> params) {
+    R_TRY(impl.GetWorkBufferSizeForMultiStreamEx(*params, *out_size));
     LOG_DEBUG(Service_Audio,
               "sample_rate {} channel_count {} total_stream_count {} stereo_stream_count {} "
-              "use_large_frame_size {} -- returned size 0x{:X}",
-              params.sample_rate, params.channel_count, params.total_stream_count,
-              params.stereo_stream_count, params.use_large_frame_size, size);
-
-    IPC::ResponseBuilder rb{ctx, 4};
-    rb.Push(result);
-    rb.Push(size);
-}
-
-void IHardwareOpusDecoderManager::GetWorkBufferSizeExEx(HLERequestContext& ctx) {
-    IPC::RequestParser rp{ctx};
-    auto params = rp.PopRaw<OpusParametersEx>();
-
-    u64 size{};
-    auto result = impl.GetWorkBufferSizeExEx(params, size);
-
-    LOG_DEBUG(Service_Audio, "size 0x{:X}", size);
-
-    IPC::ResponseBuilder rb{ctx, 4};
-    rb.Push(result);
-    rb.Push(size);
+              "use_large_frame_size {} -- returned size {:#x}",
+              params->sample_rate, params->channel_count, params->total_stream_count,
+              params->stereo_stream_count, params->use_large_frame_size, *out_size);
+    R_SUCCEED();
 }
 
-void IHardwareOpusDecoderManager::GetWorkBufferSizeForMultiStreamExEx(HLERequestContext& ctx) {
-    IPC::RequestParser rp{ctx};
-
-    auto input{ctx.ReadBuffer()};
-    OpusMultiStreamParametersEx params;
-    std::memcpy(&params, input.data(), sizeof(OpusMultiStreamParametersEx));
-
-    u64 size{};
-    auto result = impl.GetWorkBufferSizeForMultiStreamExEx(params, size);
-
-    LOG_DEBUG(Service_Audio, "size 0x{:X}", size);
-
-    IPC::ResponseBuilder rb{ctx, 4};
-    rb.Push(result);
-    rb.Push(size);
+Result IHardwareOpusDecoderManager::GetWorkBufferSizeExEx(Out<u32> out_size,
+                                                          OpusParametersEx params) {
+    R_TRY(impl.GetWorkBufferSizeExEx(params, *out_size));
+    LOG_DEBUG(Service_Audio, "size {:#x}", *out_size);
+    R_SUCCEED();
 }
 
-IHardwareOpusDecoderManager::IHardwareOpusDecoderManager(Core::System& system_)
-    : ServiceFramework{system_, "hwopus"}, system{system_}, impl{system} {
-    static const FunctionInfo functions[] = {
-        {0, &IHardwareOpusDecoderManager::OpenHardwareOpusDecoder, "OpenHardwareOpusDecoder"},
-        {1, &IHardwareOpusDecoderManager::GetWorkBufferSize, "GetWorkBufferSize"},
-        {2, &IHardwareOpusDecoderManager::OpenHardwareOpusDecoderForMultiStream,
-         "OpenOpusDecoderForMultiStream"},
-        {3, &IHardwareOpusDecoderManager::GetWorkBufferSizeForMultiStream,
-         "GetWorkBufferSizeForMultiStream"},
-        {4, &IHardwareOpusDecoderManager::OpenHardwareOpusDecoderEx, "OpenHardwareOpusDecoderEx"},
-        {5, &IHardwareOpusDecoderManager::GetWorkBufferSizeEx, "GetWorkBufferSizeEx"},
-        {6, &IHardwareOpusDecoderManager::OpenHardwareOpusDecoderForMultiStreamEx,
-         "OpenHardwareOpusDecoderForMultiStreamEx"},
-        {7, &IHardwareOpusDecoderManager::GetWorkBufferSizeForMultiStreamEx,
-         "GetWorkBufferSizeForMultiStreamEx"},
-        {8, &IHardwareOpusDecoderManager::GetWorkBufferSizeExEx, "GetWorkBufferSizeExEx"},
-        {9, &IHardwareOpusDecoderManager::GetWorkBufferSizeForMultiStreamExEx,
-         "GetWorkBufferSizeForMultiStreamExEx"},
-    };
-    RegisterHandlers(functions);
+Result IHardwareOpusDecoderManager::GetWorkBufferSizeForMultiStreamExEx(
+    Out<u32> out_size, InLargeData<OpusMultiStreamParametersEx, BufferAttr_HipcPointer> params) {
+    R_TRY(impl.GetWorkBufferSizeForMultiStreamExEx(*params, *out_size));
+    LOG_DEBUG(Service_Audio, "size {:#x}", *out_size);
+    R_SUCCEED();
 }
 
-IHardwareOpusDecoderManager::~IHardwareOpusDecoderManager() = default;
-
 } // namespace Service::Audio
diff --git a/src/core/hle/service/audio/hardware_opus_decoder_manager.h b/src/core/hle/service/audio/hardware_opus_decoder_manager.h
index 29b1f16f5..4f869c517 100644
--- a/src/core/hle/service/audio/hardware_opus_decoder_manager.h
+++ b/src/core/hle/service/audio/hardware_opus_decoder_manager.h
@@ -4,30 +4,47 @@
 #pragma once
 
 #include "audio_core/opus/decoder_manager.h"
+#include "core/hle/service/cmif_types.h"
 #include "core/hle/service/service.h"
 
-namespace Core {
-class System;
-}
-
 namespace Service::Audio {
 
+class IHardwareOpusDecoder;
+
+using AudioCore::OpusDecoder::OpusMultiStreamParameters;
+using AudioCore::OpusDecoder::OpusMultiStreamParametersEx;
+using AudioCore::OpusDecoder::OpusParameters;
+using AudioCore::OpusDecoder::OpusParametersEx;
+
 class IHardwareOpusDecoderManager final : public ServiceFramework<IHardwareOpusDecoderManager> {
 public:
     explicit IHardwareOpusDecoderManager(Core::System& system_);
     ~IHardwareOpusDecoderManager() override;
 
 private:
-    void OpenHardwareOpusDecoder(HLERequestContext& ctx);
-    void GetWorkBufferSize(HLERequestContext& ctx);
-    void OpenHardwareOpusDecoderForMultiStream(HLERequestContext& ctx);
-    void GetWorkBufferSizeForMultiStream(HLERequestContext& ctx);
-    void OpenHardwareOpusDecoderEx(HLERequestContext& ctx);
-    void GetWorkBufferSizeEx(HLERequestContext& ctx);
-    void OpenHardwareOpusDecoderForMultiStreamEx(HLERequestContext& ctx);
-    void GetWorkBufferSizeForMultiStreamEx(HLERequestContext& ctx);
-    void GetWorkBufferSizeExEx(HLERequestContext& ctx);
-    void GetWorkBufferSizeForMultiStreamExEx(HLERequestContext& ctx);
+    Result OpenHardwareOpusDecoder(Out<SharedPointer<IHardwareOpusDecoder>> out_decoder,
+                                   OpusParameters params, u32 tmem_size,
+                                   InCopyHandle<Kernel::KTransferMemory> tmem_handle);
+    Result GetWorkBufferSize(Out<u32> out_size, OpusParameters params);
+    Result OpenHardwareOpusDecoderForMultiStream(
+        Out<SharedPointer<IHardwareOpusDecoder>> out_decoder,
+        InLargeData<OpusMultiStreamParameters, BufferAttr_HipcPointer> params, u32 tmem_size,
+        InCopyHandle<Kernel::KTransferMemory> tmem_handle);
+    Result GetWorkBufferSizeForMultiStream(
+        Out<u32> out_size, InLargeData<OpusMultiStreamParameters, BufferAttr_HipcPointer> params);
+    Result OpenHardwareOpusDecoderEx(Out<SharedPointer<IHardwareOpusDecoder>> out_decoder,
+                                     OpusParametersEx params, u32 tmem_size,
+                                     InCopyHandle<Kernel::KTransferMemory> tmem_handle);
+    Result GetWorkBufferSizeEx(Out<u32> out_size, OpusParametersEx params);
+    Result OpenHardwareOpusDecoderForMultiStreamEx(
+        Out<SharedPointer<IHardwareOpusDecoder>> out_decoder,
+        InLargeData<OpusMultiStreamParametersEx, BufferAttr_HipcPointer> params, u32 tmem_size,
+        InCopyHandle<Kernel::KTransferMemory> tmem_handle);
+    Result GetWorkBufferSizeForMultiStreamEx(
+        Out<u32> out_size, InLargeData<OpusMultiStreamParametersEx, BufferAttr_HipcPointer> params);
+    Result GetWorkBufferSizeExEx(Out<u32> out_size, OpusParametersEx params);
+    Result GetWorkBufferSizeForMultiStreamExEx(
+        Out<u32> out_size, InLargeData<OpusMultiStreamParametersEx, BufferAttr_HipcPointer> params);
 
     Core::System& system;
     AudioCore::OpusDecoder::OpusDecoderManager impl;