4 files changed, 307 insertions, 16 deletions

diff --git a/src/common/logging/backend.cpp b/src/common/logging/backend.cpp
index 88209081d..7fd397fe5 100644
--- a/src/common/logging/backend.cpp
+++ b/src/common/logging/backend.cpp
@@ -43,6 +43,7 @@ namespace Log {
     SUB(Service, AM)                                                                               \
     SUB(Service, PTM)                                                                              \
     SUB(Service, LDR)                                                                              \
+    SUB(Service, MIC)                                                                              \
     SUB(Service, NDM)                                                                              \
     SUB(Service, NIM)                                                                              \
     SUB(Service, NWM)                                                                              \
diff --git a/src/common/logging/log.h b/src/common/logging/log.h
index 8d3a2d03e..8011534b8 100644
--- a/src/common/logging/log.h
+++ b/src/common/logging/log.h
@@ -60,6 +60,7 @@ enum class Class : ClassType {
     Service_AM,        ///< The AM (Application manager) service
     Service_PTM,       ///< The PTM (Power status & misc.) service
     Service_LDR,       ///< The LDR (3ds dll loader) service
+    Service_MIC,       ///< The MIC (microphone) service
     Service_NDM,       ///< The NDM (Network daemon manager) service
     Service_NIM,       ///< The NIM (Network interface manager) service
     Service_NWM,       ///< The NWM (Network wlan manager) service
diff --git a/src/core/hle/service/mic_u.cpp b/src/core/hle/service/mic_u.cpp
index edd1ea97b..3e1e2588c 100644
--- a/src/core/hle/service/mic_u.cpp
+++ b/src/core/hle/service/mic_u.cpp
@@ -2,6 +2,9 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include "common/logging/log.h"
+#include "core/hle/kernel/event.h"
+#include "core/hle/kernel/shared_memory.h"
 #include "core/hle/service/mic_u.h"
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -9,23 +12,296 @@
 
 namespace MIC_U {
 
+enum class Encoding : u8 {
+    PCM8 = 0,
+    PCM16 = 1,
+    PCM8Signed = 2,
+    PCM16Signed = 3,
+};
+
+enum class SampleRate : u8 {
+    SampleRate32730 = 0,
+    SampleRate16360 = 1,
+    SampleRate10910 = 2,
+    SampleRate8180 = 3
+};
+
+static Kernel::SharedPtr<Kernel::Event> buffer_full_event;
+static Kernel::SharedPtr<Kernel::SharedMemory> shared_memory;
+static u8 mic_gain = 0;
+static bool mic_power = false;
+static bool is_sampling = false;
+static bool allow_shell_closed;
+static bool clamp = false;
+static Encoding encoding;
+static SampleRate sample_rate;
+static s32 audio_buffer_offset;
+static u32 audio_buffer_size;
+static bool audio_buffer_loop;
+
+/**
+ * MIC::MapSharedMem service function
+ *  Inputs:
+ *      0 : Header Code[0x00010042]
+ *      1 : Shared-mem size
+ *      2 : CopyHandleDesc
+ *      3 : Shared-mem handle
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ */
+static void MapSharedMem(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+    u32 size = cmd_buff[1];
+    Handle mem_handle = cmd_buff[3];
+    shared_memory = Kernel::g_handle_table.Get<Kernel::SharedMemory>(mem_handle);
+    if (shared_memory) {
+        shared_memory->name = "MIC_U:shared_memory";
+    }
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    LOG_WARNING(Service_MIC, "called, size=0x%X, mem_handle=0x%08X", size, mem_handle);
+}
+
+/**
+ * MIC::UnmapSharedMem service function
+ *  Inputs:
+ *      0 : Header Code[0x00020000]
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ */
+static void UnmapSharedMem(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    LOG_WARNING(Service_MIC, "called");
+}
+
+/**
+ * MIC::StartSampling service function
+ *  Inputs:
+ *      0 : Header Code[0x00030140]
+ *      1 : Encoding
+ *      2 : SampleRate
+ *      3 : Base offset for audio data in sharedmem
+ *      4 : Size of the audio data in sharedmem
+ *      5 : Loop at end of buffer
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ */
+static void StartSampling(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+
+    encoding = static_cast<Encoding>(cmd_buff[1] & 0xFF);
+    sample_rate = static_cast<SampleRate>(cmd_buff[2] & 0xFF);
+    audio_buffer_offset = cmd_buff[3];
+    audio_buffer_size = cmd_buff[4];
+    audio_buffer_loop = static_cast<bool>(cmd_buff[5] & 0xFF);
+
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    is_sampling = true;
+    LOG_WARNING(Service_MIC, "(STUBBED) called");
+}
+
+/**
+ * MIC::AdjustSampling service function
+ *  Inputs:
+ *      0 : Header Code[0x00040040]
+ *      1 : SampleRate
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ */
+static void AdjustSampling(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+    sample_rate = static_cast<SampleRate>(cmd_buff[1] & 0xFF);
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    LOG_WARNING(Service_MIC, "(STUBBED) called");
+}
+
+/**
+ * MIC::StopSampling service function
+ *  Inputs:
+ *      0 : Header Code[0x00050000]
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ */
+static void StopSampling(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    is_sampling = false;
+    LOG_WARNING(Service_MIC, "(STUBBED) called");
+}
+
+/**
+ * MIC::IsSampling service function
+ *  Inputs:
+ *      0 : Header Code[0x00060000]
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ *      2 : 0 = sampling, non-zero = sampling
+ */
+static void IsSampling(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    cmd_buff[2] = is_sampling;
+    LOG_WARNING(Service_MIC, "(STUBBED) called");
+}
+
+/**
+ * MIC::GetBufferFullEvent service function
+ *  Inputs:
+ *      0 : Header Code[0x00070000]
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ *      3 : Event handle
+ */
+static void GetBufferFullEvent(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    cmd_buff[3] = Kernel::g_handle_table.Create(buffer_full_event).MoveFrom();
+    LOG_WARNING(Service_MIC, "(STUBBED) called");
+}
+
+/**
+ * MIC::SetGain service function
+ *  Inputs:
+ *      0 : Header Code[0x00080040]
+ *      1 : Gain
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ */
+static void SetGain(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+    mic_gain = cmd_buff[1] & 0xFF;
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    LOG_WARNING(Service_MIC, "(STUBBED) called, gain = %d", mic_gain);
+}
+
+/**
+ * MIC::GetGain service function
+ *  Inputs:
+ *      0 : Header Code[0x00090000]
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ *      2 : Gain
+ */
+static void GetGain(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    cmd_buff[2] = mic_gain;
+    LOG_WARNING(Service_MIC, "(STUBBED) called");
+}
+
+/**
+ * MIC::SetPower service function
+ *  Inputs:
+ *      0 : Header Code[0x000A0040]
+ *      1 : Power (0 = off, 1 = on)
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ */
+static void SetPower(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+    mic_power = static_cast<bool>(cmd_buff[1] & 0xFF);
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    LOG_WARNING(Service_MIC, "(STUBBED) called, power = %u", mic_power);
+}
+
+/**
+ * MIC::GetPower service function
+ *  Inputs:
+ *      0 : Header Code[0x000B0000]
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ *      2 : Power
+ */
+static void GetPower(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    cmd_buff[2] = mic_power;
+    LOG_WARNING(Service_MIC, "(STUBBED) called");
+}
+
+/**
+ * MIC::SetIirFilterMic service function
+ *  Inputs:
+ *      0 : Header Code[0x000C0042]
+ *      1 : Size
+ *      2 : (Size << 4) | 0xA
+ *      3 : Pointer to IIR Filter Data
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ */
+static void SetIirFilterMic(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+
+    u32 size = cmd_buff[1];
+    VAddr buffer = cmd_buff[3];
+
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    LOG_WARNING(Service_MIC, "(STUBBED) called, size=0x%X, buffer=0x%08X", size, buffer);
+}
+
+/**
+ * MIC::SetClamp service function
+ *  Inputs:
+ *      0 : Header Code[0x000D0040]
+ *      1 : Clamp (0 = don't clamp, non-zero = clamp)
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ */
+static void SetClamp(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+    clamp = static_cast<bool>(cmd_buff[1] & 0xFF);
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    LOG_WARNING(Service_MIC, "(STUBBED) called, clamp=%u", clamp);
+}
+
+/**
+ * MIC::GetClamp service function
+ *  Inputs:
+ *      0 : Header Code[0x000E0000]
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ *      2 : Clamp (0 = don't clamp, non-zero = clamp)
+ */
+static void GetClamp(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    cmd_buff[2] = clamp;
+    LOG_WARNING(Service_MIC, "(STUBBED) called");
+}
+
+/**
+ * MIC::SetAllowShellClosed service function
+ *  Inputs:
+ *      0 : Header Code[0x000D0040]
+ *      1 : Sampling allowed while shell closed (0 = disallow, non-zero = allow)
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ */
+static void SetAllowShellClosed(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+    allow_shell_closed = static_cast<bool>(cmd_buff[1] & 0xFF);
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    LOG_WARNING(Service_MIC, "(STUBBED) called, allow_shell_closed=%u", allow_shell_closed);
+}
+
 const Interface::FunctionInfo FunctionTable[] = {
-    {0x00010042, nullptr, "MapSharedMem"},
-    {0x00020000, nullptr, "UnmapSharedMem"},
-    {0x00030140, nullptr, "Initialize"},
-    {0x00040040, nullptr, "AdjustSampling"},
-    {0x00050000, nullptr, "StopSampling"},
-    {0x00060000, nullptr, "IsSampling"},
-    {0x00070000, nullptr, "GetEventHandle"},
-    {0x00080040, nullptr, "SetGain"},
-    {0x00090000, nullptr, "GetGain"},
-    {0x000A0040, nullptr, "SetPower"},
-    {0x000B0000, nullptr, "GetPower"},
-    {0x000C0042, nullptr, "size"},
-    {0x000D0040, nullptr, "SetClamp"},
-    {0x000E0000, nullptr, "GetClamp"},
-    {0x000F0040, nullptr, "SetAllowShellClosed"},
-    {0x00100040, nullptr, "unknown_input2"},
+    {0x00010042, MapSharedMem, "MapSharedMem"},
+    {0x00020000, UnmapSharedMem, "UnmapSharedMem"},
+    {0x00030140, StartSampling, "StartSampling"},
+    {0x00040040, AdjustSampling, "AdjustSampling"},
+    {0x00050000, StopSampling, "StopSampling"},
+    {0x00060000, IsSampling, "IsSampling"},
+    {0x00070000, GetBufferFullEvent, "GetBufferFullEvent"},
+    {0x00080040, SetGain, "SetGain"},
+    {0x00090000, GetGain, "GetGain"},
+    {0x000A0040, SetPower, "SetPower"},
+    {0x000B0000, GetPower, "GetPower"},
+    {0x000C0042, SetIirFilterMic, "SetIirFilterMic"},
+    {0x000D0040, SetClamp, "SetClamp"},
+    {0x000E0000, GetClamp, "GetClamp"},
+    {0x000F0040, SetAllowShellClosed, "SetAllowShellClosed"},
+    {0x00100040, nullptr, "SetClientSDKVersion"},
 };
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -33,6 +309,18 @@ const Interface::FunctionInfo FunctionTable[] = {
 
 Interface::Interface() {
     Register(FunctionTable);
+    shared_memory = nullptr;
+    buffer_full_event =
+        Kernel::Event::Create(Kernel::ResetType::OneShot, "MIC_U::buffer_full_event");
+    mic_gain = 0;
+    mic_power = false;
+    is_sampling = false;
+    clamp = false;
+}
+
+Interface::~Interface() {
+    shared_memory = nullptr;
+    buffer_full_event = nullptr;
 }
 
 } // namespace
diff --git a/src/core/hle/service/mic_u.h b/src/core/hle/service/mic_u.h
index dc795d14c..1cff7390e 100644
--- a/src/core/hle/service/mic_u.h
+++ b/src/core/hle/service/mic_u.h
@@ -16,6 +16,7 @@ namespace MIC_U {
 class Interface : public Service::Interface {
 public:
     Interface();
+    ~Interface();
 
     std::string GetPortName() const override {
         return "mic:u";