HLE/APT: Initial HLE support for applets.

Currently only the SWKBD is emulated, and there's currently no way to ask the user for input, so it always returns "Subv" as the text.

4 files changed, 233 insertions, 0 deletions

diff --git a/src/core/hle/applets/applet.cpp b/src/core/hle/applets/applet.cpp
new file mode 100644
index 000000000..1f447e5fc
--- /dev/null
+++ b/src/core/hle/applets/applet.cpp
@@ -0,0 +1,40 @@
+// Copyright 2015 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/assert.h"
+#include "common/logging/log.h"
+
+#include "core/hle/applets/applet.h"
+#include "core/hle/applets/swkbd.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+namespace HLE {
+namespace Applets {
+
+static std::unordered_map<Service::APT::AppletId, std::shared_ptr<Applet>> applets;
+
+ResultCode Applet::Create(Service::APT::AppletId id) {
+    switch (id) {
+    case Service::APT::AppletId::SoftwareKeyboard1:
+    case Service::APT::AppletId::SoftwareKeyboard2:
+        applets[id] = std::make_shared<SoftwareKeyboard>(id);
+        break;
+    default:
+        // TODO(Subv): Find the right error code
+        return ResultCode(ErrorDescription::NotFound, ErrorModule::Applet, ErrorSummary::NotSupported, ErrorLevel::Permanent);
+    }
+
+    return RESULT_SUCCESS;
+}
+
+std::shared_ptr<Applet> Applet::Get(Service::APT::AppletId id) {
+    auto itr = applets.find(id);
+    if (itr != applets.end())
+        return itr->second;
+    return nullptr;
+}
+
+}
+} // namespace
diff --git a/src/core/hle/applets/applet.h b/src/core/hle/applets/applet.h
new file mode 100644
index 000000000..221348d9c
--- /dev/null
+++ b/src/core/hle/applets/applet.h
@@ -0,0 +1,53 @@
+// Copyright 2015 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/common_types.h"
+#include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/shared_memory.h"
+#include "core/hle/service/apt/apt.h"
+
+namespace HLE {
+namespace Applets {
+
+class Applet {
+public:
+    virtual ~Applet() {};
+    Applet(Service::APT::AppletId id) : id(id) {};
+
+    /**
+     * Creates an instance of the Applet subclass identified by the parameter
+     * and stores it in a global map.
+     * @param id Id of the applet to create
+     * @returns ResultCode Whether the operation was successful or not
+     */
+    static ResultCode Create(Service::APT::AppletId id);
+
+    /**
+     * Retrieves the Applet instance identified by the specified id
+     * @param id Id of the Applet to retrieve
+     * @returns Requested Applet or nullptr if not found
+     */
+    static std::shared_ptr<Applet> Get(Service::APT::AppletId id);
+
+    /**
+     * Handles a parameter from the application
+     * @param parameter Parameter data to handle
+     * @returns ResultCode Whether the operation was successful or not
+     */
+    virtual ResultCode ReceiveParameter(Service::APT::MessageParameter const& parameter) = 0;
+
+    /**
+     * Handles the Applet start event, triggered from the application
+     * @param parameter Parameter data to handle
+     * @returns ResultCode Whether the operation was successful or not
+     */
+    virtual ResultCode Start(Service::APT::AppletStartupParameter const& parameter) = 0;
+
+    Service::APT::AppletId id; ///< Id of this Applet
+};
+
+}
+} // namespace
diff --git a/src/core/hle/applets/swkbd.cpp b/src/core/hle/applets/swkbd.cpp
new file mode 100644
index 000000000..224aeb096
--- /dev/null
+++ b/src/core/hle/applets/swkbd.cpp
@@ -0,0 +1,73 @@
+// Copyright 2015 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/assert.h"
+#include "common/logging/log.h"
+
+#include "core/hle/applets/swkbd.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+namespace HLE {
+namespace Applets {
+
+SoftwareKeyboard::SoftwareKeyboard(Service::APT::AppletId id) : Applet(id) {
+    // Create the SharedMemory that will hold the framebuffer data
+    // TODO(Subv): What size should we use here?
+    using Kernel::MemoryPermission;
+    framebuffer_memory = Kernel::SharedMemory::Create(0x1000, MemoryPermission::ReadWrite, MemoryPermission::ReadWrite, "SoftwareKeyboard Memory");
+}
+
+ResultCode SoftwareKeyboard::ReceiveParameter(Service::APT::MessageParameter const& parameter) {
+    if (parameter.signal != static_cast<u32>(Service::APT::SignalType::LibAppJustStarted)) {
+        LOG_ERROR(Service_APT, "unsupported signal %u", parameter.signal);
+        UNIMPLEMENTED();
+        // TODO(Subv): Find the right error code
+        return ResultCode(-1);
+    }
+
+    Service::APT::MessageParameter result;
+    // The buffer passed in parameter contains the data returned by GSPGPU::ImportDisplayCaptureInfo
+    result.signal = static_cast<u32>(Service::APT::SignalType::LibAppFinished);
+    result.data = nullptr; 
+    result.buffer_size = 0;
+    result.destination_id = static_cast<u32>(Service::APT::AppletId::Application);
+    result.sender_id = static_cast<u32>(id);
+    result.object = framebuffer_memory;
+
+    Service::APT::SendParameter(result);
+    return RESULT_SUCCESS;
+}
+
+ResultCode SoftwareKeyboard::Start(Service::APT::AppletStartupParameter const& parameter) {
+    memcpy(&config, parameter.data, parameter.buffer_size);
+    text_memory = boost::static_pointer_cast<Kernel::SharedMemory, Kernel::Object>(parameter.object);
+
+    // TODO(Subv): Verify if this is the correct behavior
+    memset(text_memory->GetPointer(), 0, text_memory->size);
+
+    // TODO(Subv): Remove this hardcoded text
+    const wchar_t str[] = L"Subv";
+    memcpy(text_memory->GetPointer(), str, 4 * sizeof(wchar_t));
+    
+    // TODO(Subv): Ask for input and write it to the shared memory
+    // TODO(Subv): Find out what are the possible values for the return code,
+    // some games seem to check for a hardcoded 2
+    config.return_code = 2;
+    config.text_length = 5;
+    config.text_offset = 0;
+
+    Service::APT::MessageParameter message;
+    message.buffer_size = sizeof(SoftwareKeyboardConfig);
+    message.data = reinterpret_cast<u8*>(&config);
+    message.signal = static_cast<u32>(Service::APT::SignalType::LibAppClosed);
+    message.destination_id = static_cast<u32>(Service::APT::AppletId::Application);
+    message.sender_id = static_cast<u32>(id);
+    Service::APT::SendParameter(message);
+
+    return RESULT_SUCCESS;
+}
+
+}
+} // namespace
diff --git a/src/core/hle/applets/swkbd.h b/src/core/hle/applets/swkbd.h
new file mode 100644
index 000000000..d7199690c
--- /dev/null
+++ b/src/core/hle/applets/swkbd.h
@@ -0,0 +1,67 @@
+// Copyright 2015 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/common_types.h"
+#include "core/hle/applets/applet.h"
+#include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/shared_memory.h"
+#include "core/hle/service/apt/apt.h"
+
+namespace HLE {
+namespace Applets {
+
+struct SoftwareKeyboardConfig {
+    INSERT_PADDING_WORDS(0x8);
+
+    u16 max_text_length; ///< Maximum length of the input text
+
+    INSERT_PADDING_BYTES(0x6E);
+
+    char16_t display_text[65]; ///< Text to display when asking the user for input
+
+    INSERT_PADDING_BYTES(0xE);
+
+    u32 default_text_offset; ///< Offset of the default text in the output SharedMemory
+
+    INSERT_PADDING_WORDS(0x3);
+
+    u32 shared_memory_size; ///< Size of the SharedMemory
+
+    INSERT_PADDING_WORDS(0x1);
+
+    u32 return_code; ///< Return code of the SoftwareKeyboard, usually 2, other values are unknown
+
+    INSERT_PADDING_WORDS(0x2);
+
+    u32 text_offset; ///< Offset in the SharedMemory where the output text starts
+    u16 text_length; ///< Length in characters of the output text
+
+    INSERT_PADDING_BYTES(0x2B6);
+};
+
+static_assert(sizeof(SoftwareKeyboardConfig) == 0x400, "Software Keyboard Config size is wrong");
+
+class SoftwareKeyboard : public Applet {
+public:
+    SoftwareKeyboard(Service::APT::AppletId id);
+    ~SoftwareKeyboard() {}
+
+    ResultCode ReceiveParameter(Service::APT::MessageParameter const& parameter) override;
+    ResultCode Start(Service::APT::AppletStartupParameter const& parameter) override;
+
+    /// TODO(Subv): Find out what this is actually used for. 
+    // It is believed that the application stores the current screen image here.
+    Kernel::SharedPtr<Kernel::SharedMemory> framebuffer_memory;
+
+    /// SharedMemory where the output text will be stored
+    Kernel::SharedPtr<Kernel::SharedMemory> text_memory;
+    
+    /// Configuration of this instance of the SoftwareKeyboard, as received from the application
+    SoftwareKeyboardConfig config;
+};
+
+}
+} // namespace