core/movie: Movie refactor, add a completion callback

src/citra/citra.cpp

@@ -39,6 +39,7 @@
 #include "core/gdbstub/gdbstub.h"
 #include "core/hle/service/am/am.h"
 #include "core/loader/loader.h"
+#include "core/movie.h"
 #include "core/settings.h"
 #include "network/network.h"
 
@@ -268,8 +269,6 @@ int main(int argc, char** argv) {
     // Apply the command line arguments
     Settings::values.gdbstub_port = gdb_port;
     Settings::values.use_gdbstub = use_gdbstub;
-    Settings::values.movie_play = std::move(movie_play);
-    Settings::values.movie_record = std::move(movie_record);
     Settings::Apply();
 
     // Register frontend applets
@@ -327,9 +326,18 @@ int main(int argc, char** argv) {
         }
     }
 
+    if (!movie_play.empty()) {
+        Core::Movie::GetInstance().StartPlayback(movie_play);
+    }
+    if (!movie_record.empty()) {
+        Core::Movie::GetInstance().StartRecording(movie_record);
+    }
+
     while (emu_window->IsOpen()) {
         system.RunLoop();
     }
 
+    Core::Movie::GetInstance().Shutdown();
+
     return 0;
 }

src/core/core.cpp

@@ -176,7 +176,6 @@ System::ResultStatus System::Init(EmuWindow* emu_window, u32 system_mode) {
     Kernel::Init(system_mode);
     Service::Init(service_manager);
     GDBStub::Init();
-    Movie::GetInstance().Init();
 
     if (!VideoCore::Init(emu_window)) {
         return ResultStatus::ErrorVideoCore;
@@ -214,7 +213,6 @@ void System::Shutdown() {
                          perf_results.frametime * 1000.0);
 
     // Shutdown emulation session
-    Movie::GetInstance().Shutdown();
     GDBStub::Shutdown();
     VideoCore::Shutdown();
     Service::Shutdown();

src/core/movie.cpp

@@ -118,10 +118,10 @@ struct CTMHeader {
 static_assert(sizeof(CTMHeader) == 256, "CTMHeader should be 256 bytes");
 #pragma pack(pop)
 
-bool Movie::IsPlayingInput() {
+bool Movie::IsPlayingInput() const {
     return play_mode == PlayMode::Playing;
 }
-bool Movie::IsRecordingInput() {
+bool Movie::IsRecordingInput() const {
     return play_mode == PlayMode::Recording;
 }
 
@@ -129,6 +129,7 @@ void Movie::CheckInputEnd() {
     if (current_byte + sizeof(ControllerState) > recorded_input.size()) {
         LOG_INFO(Movie, "Playback finished");
         play_mode = PlayMode::None;
+        playback_completion_callback();
     }
 }
 
@@ -343,33 +344,35 @@ void Movie::Record(const Service::IR::ExtraHIDResponse& extra_hid_response) {
     Record(s);
 }
 
-bool Movie::ValidateHeader(const CTMHeader& header) {
+Movie::ValidationResult Movie::ValidateHeader(const CTMHeader& header) const {
     if (header_magic_bytes != header.filetype) {
         LOG_ERROR(Movie, "Playback file does not have valid header");
-        return false;
+        return ValidationResult::Invalid;
     }
 
     std::string revision =
         Common::ArrayToString(header.revision.data(), header.revision.size(), 21, false);
     revision = Common::ToLower(revision);
 
-    if (revision != Common::g_scm_rev) {
-        LOG_WARNING(Movie,
-                    "This movie was created on a different version of Citra, playback may desync");
-    }
-
     u64 program_id;
     Core::System::GetInstance().GetAppLoader().ReadProgramId(program_id);
     if (program_id != header.program_id) {
         LOG_WARNING(Movie, "This movie was recorded using a ROM with a different program id");
+        return ValidationResult::GameDismatch;
     }
 
-    return true;
+    if (revision != Common::g_scm_rev) {
+        LOG_WARNING(Movie,
+                    "This movie was created on a different version of Citra, playback may desync");
+        return ValidationResult::RevisionDismatch;
+    }
+
+    return ValidationResult::OK;
 }
 
 void Movie::SaveMovie() {
-    LOG_INFO(Movie, "Saving movie");
-    FileUtil::IOFile save_record(Settings::values.movie_record, "wb");
+    LOG_INFO(Movie, "Saving recorded movie to '{}'", record_movie_file);
+    FileUtil::IOFile save_record(record_movie_file, "wb");
 
     if (!save_record.IsGood()) {
         LOG_ERROR(Movie, "Unable to open file to save movie");
@@ -394,31 +397,45 @@ void Movie::SaveMovie() {
     }
 }
 
-void Movie::Init() {
-    if (!Settings::values.movie_play.empty()) {
+void Movie::StartPlayback(const std::string& movie_file,
+                          std::function<void()> completion_callback) {
     LOG_INFO(Movie, "Loading Movie for playback");
-        FileUtil::IOFile save_record(Settings::values.movie_play, "rb");
-        u64 size = save_record.GetSize();
+    FileUtil::IOFile save_record(movie_file, "rb");
+    const u64 size = save_record.GetSize();
 
     if (save_record.IsGood() && size > sizeof(CTMHeader)) {
         CTMHeader header;
         save_record.ReadArray(&header, 1);
-            if (ValidateHeader(header)) {
+        if (ValidateHeader(header) != ValidationResult::Invalid) {
             play_mode = PlayMode::Playing;
             recorded_input.resize(size - sizeof(CTMHeader));
             save_record.ReadArray(recorded_input.data(), recorded_input.size());
             current_byte = 0;
+            playback_completion_callback = completion_callback;
         }
     } else {
-            LOG_ERROR(Movie, "Failed to playback movie: Unable to open '{}'",
-                      Settings::values.movie_play);
+        LOG_ERROR(Movie, "Failed to playback movie: Unable to open '{}'", movie_file);
     }
 }
 
-    if (!Settings::values.movie_record.empty()) {
+void Movie::StartRecording(const std::string& movie_file) {
     LOG_INFO(Movie, "Enabling Movie recording");
     play_mode = PlayMode::Recording;
+    record_movie_file = movie_file;
 }
+
+Movie::ValidationResult Movie::ValidateMovie(const std::string& movie_file) const {
+    LOG_INFO(Movie, "Validating Movie file '{}'", movie_file);
+    FileUtil::IOFile save_record(movie_file, "rb");
+    const u64 size = save_record.GetSize();
+
+    if (!save_record || size <= sizeof(CTMHeader)) {
+        return ValidationResult::Invalid;
+    }
+
+    CTMHeader header;
+    save_record.ReadArray(&header, 1);
+    return ValidateHeader(header);
 }
 
 void Movie::Shutdown() {
@@ -428,6 +445,7 @@ void Movie::Shutdown() {
 
     play_mode = PlayMode::None;
     recorded_input.resize(0);
+    record_movie_file.clear();
     current_byte = 0;
 }
 

src/core/movie.h

@@ -4,6 +4,7 @@
 
 #pragma once
 
+#include <functional>
 #include "common/common_types.h"
 
 namespace Service {
@@ -26,6 +27,12 @@ enum class PlayMode;
 
 class Movie {
 public:
+    enum class ValidationResult {
+        OK,
+        RevisionDismatch,
+        GameDismatch,
+        Invalid,
+    };
     /**
      * Gets the instance of the Movie singleton class.
      * @returns Reference to the instance of the Movie singleton class.
@@ -34,7 +41,10 @@ public:
         return s_instance;
     }
 
-    void Init();
+    void StartPlayback(const std::string& movie_file,
+                       std::function<void()> completion_callback = {});
+    void StartRecording(const std::string& movie_file);
+    ValidationResult ValidateMovie(const std::string& movie_file) const;
 
     void Shutdown();
 
@@ -74,14 +84,12 @@ public:
      * When playing: Replaces the given input states with the ones stored in the playback file
      */
     void HandleExtraHidResponse(Service::IR::ExtraHIDResponse& extra_hid_response);
+    bool IsPlayingInput() const;
+    bool IsRecordingInput() const;
 
 private:
     static Movie s_instance;
 
-    bool IsPlayingInput();
-
-    bool IsRecordingInput();
-
     void CheckInputEnd();
 
     template <typename... Targs>
@@ -103,12 +111,14 @@ private:
     void Record(const Service::IR::PadState& pad_state, const s16& c_stick_x, const s16& c_stick_y);
     void Record(const Service::IR::ExtraHIDResponse& extra_hid_response);
 
-    bool ValidateHeader(const CTMHeader& header);
+    ValidationResult ValidateHeader(const CTMHeader& header) const;
 
     void SaveMovie();
 
     PlayMode play_mode;
+    std::string record_movie_file;
     std::vector<u8> recorded_input;
+    std::function<void()> playback_completion_callback;
     size_t current_byte = 0;
 };
 } // namespace Core

src/core/settings.h

@@ -156,10 +156,6 @@ struct Values {
     std::string log_filter;
     std::unordered_map<std::string, bool> lle_modules;
 
-    // Movie
-    std::string movie_play;
-    std::string movie_record;
-
     // WebService
     bool enable_telemetry;
     std::string telemetry_endpoint_url;