[feat] prefer hardware video codecs by default

apps/desktop/src/gui/application/gui_application.cpp

@@ -1201,7 +1201,7 @@ void GuiApplication::InitializeSettings() {
 
 bool GuiApplication::InitializeSDL() {
 #if (defined(__linux__) && !defined(__OHOS__)) && !defined(__APPLE__)
-  ConfigureLinuxCudaGraphics(config_center_->IsHardwareVideoCodec());
+  ConfigureLinuxCudaGraphics();
   // Standard Wayland top-level windows cannot choose an absolute screen
   // position. Use the session's XWayland compatibility server for the GUI so
   // auxiliary windows such as the controlled-side status window can be
@@ -1477,11 +1477,6 @@ void GuiApplication::ResetSettingsUi(bool gallery_window) {
   auto& main = ui_->Window(gallery_window);
   main->set_language_index(language_button_value_);
   main->set_codec_index(video_encode_format_button_value_);
-  const bool hardware_codec_available =
-      ConfigCenter::IsHardwareVideoCodecAvailable();
-  main->set_hardware_codec_available(hardware_codec_available);
-  main->set_hardware_codec_enabled(hardware_codec_available &&
-                                   enable_hardware_video_codec_);
   main->set_turn_enabled(enable_turn_);
   main->set_force_relay_enabled(config_center_->IsForceRelay());
   main->set_self_hosted_enabled(enable_self_hosted_);
@@ -4293,8 +4288,6 @@ bool GuiApplication::SaveSettingsFromUi(bool gallery_window) {
   language_button_value_ =
       localization::detail::ClampLanguageIndex(main->get_language_index());
   video_encode_format_button_value_ = std::clamp(main->get_codec_index(), 0, 1);
-  enable_hardware_video_codec_ = ConfigCenter::IsHardwareVideoCodecAvailable() &&
-                                  main->get_hardware_codec_enabled();
   enable_turn_ = main->get_turn_enabled();
   enable_self_hosted_ = main->get_self_hosted_enabled();
 #if !defined(__OHOS__)
@@ -4311,7 +4304,6 @@ bool GuiApplication::SaveSettingsFromUi(bool gallery_window) {
   config_center_->SetVideoEncodeFormat(
       static_cast<ConfigCenter::VIDEO_ENCODE_FORMAT>(
           video_encode_format_button_value_));
-  config_center_->SetHardwareVideoCodec(enable_hardware_video_codec_);
   config_center_->SetTurn(enable_turn_, main->get_force_relay_enabled());
   main->set_force_relay_enabled(config_center_->IsForceRelay());
 #if !defined(__OHOS__)
@@ -4378,7 +4370,6 @@ void GuiApplication::ApplySettingsFromConfig(bool reconnect) {
   localization_language_index_ = localization::detail::ClampLanguageIndex(language_button_value_);
   localization_language_ = config_center_->GetLanguage();
   video_encode_format_button_value_ = static_cast<int>(config_center_->GetVideoEncodeFormat());
-  enable_hardware_video_codec_ = config_center_->IsHardwareVideoCodec();
   enable_turn_ = config_center_->IsEnableTurn();
   enable_self_hosted_ = config_center_->IsSelfHosted();
   enable_autostart_ = config_center_->IsEnableAutostart();
@@ -4393,7 +4384,6 @@ void GuiApplication::ApplySettingsFromConfig(bool reconnect) {
   std::snprintf(signal_server_port_self_, sizeof(signal_server_port_self_), "%s", port_text.c_str());
   language_button_value_last_ = language_button_value_;
   video_encode_format_button_value_last_ = video_encode_format_button_value_;
-  enable_hardware_video_codec_last_ = enable_hardware_video_codec_;
   enable_turn_last_ = enable_turn_;
   enable_self_hosted_last_ = enable_self_hosted_;
   enable_autostart_last_ = enable_autostart_;
@@ -4412,17 +4402,14 @@ void GuiApplication::ApplySettingsFromConfig(bool reconnect) {
     // configuration. Keep the application and its console running throughout.
     CloseAllRemoteSessions();
   } else {
-    const bool hardware = config_center_->IsHardwareVideoCodec();
     const bool av1 = config_center_->GetVideoEncodeFormat() ==
                      ConfigCenter::VIDEO_ENCODE_FORMAT::AV1;
     const auto turn = static_cast<TurnMode>(config_center_->GetTurnMode());
-    if (hardware != params_.hardware_acceleration || av1 != params_.av1_encoding ||
-        turn != params_.turn_mode) {
+    if (av1 != params_.av1_encoding || turn != params_.turn_mode) {
       // Update the listening peer for incoming connections and the template
       // copied by ConnectTo for outgoing connections. Existing sessions retain
       // the codec/ICE snapshot with which they negotiated.
-      if (!peer_ || UpdateConnectionSettings(peer_, hardware, av1, turn) == 0) {
-        params_.hardware_acceleration = hardware;
+      if (!peer_ || UpdateConnectionSettings(peer_, true, av1, turn) == 0) {
         params_.av1_encoding = av1;
         params_.turn_mode = turn;
       } else {

apps/desktop/src/gui/assets/localization/localization_data.h

@@ -78,13 +78,11 @@ struct TranslationRow {
   X(console_settings_next_file, u8"已保存，将用于后续接收的文件。", "Saved; applies to subsequently received files.", u8"Сохранено. Будет применено к следующим получаемым файлам.") \
   X(console_settings_autostart, u8"已保存，在下次图形桌面登录时生效。", "Saved; applies at the next graphical desktop login.", u8"Сохранено. Будет применено при следующем входе в графический сеанс.") \
   X(console_settings_daemon, u8"已保存，普通模式重启后生效；无头控制台仍保持前台运行。", "Saved for the next normal-mode start; the headless console stays in the foreground.", u8"Сохранено для следующего запуска в обычном режиме. Консоль остаётся на переднем плане.") \
-  X(console_settings_hardware_unavailable, u8"当前构建不支持硬件编解码，未保存。", "Hardware codecs are unavailable in this build; not saved.", u8"Аппаратные кодеки недоступны в этой сборке. Не сохранено.") \
   X(console_settings_server_required, u8"请先设置有效的服务器地址和端口，再启用自托管。", "Set a valid server host and port before enabling self-hosting.", u8"Укажите адрес и порт сервера перед включением собственного сервера.") \
   X(console_settings_path_invalid, u8"请选择已存在且可写的绝对目录路径；default 使用默认目录。", "Use an existing writable absolute directory, or default for the default location.", u8"Укажите существующий доступный для записи абсолютный путь к каталогу или default.") \
   X(console_settings_readonly, u8"该选项由系统或控制端管理，不可在此修改。", "This option is managed by the system or controller and is read-only here.", u8"Этот параметр управляется системой или клиентом и здесь недоступен для изменения.") \
   X(console_setting_language, u8"语言", "Language", u8"Язык") \
   X(console_setting_codec, u8"视频编码", "Video codec", u8"Видеокодек") \
-  X(console_setting_hardware, u8"硬件编解码", "Hardware codecs", u8"Аппаратные кодеки") \
   X(console_setting_turn, u8"中继模式", "TURN relay mode", u8"Режим ретрансляции TURN") \
   X(console_setting_self_hosted, u8"自托管", "Self-hosted server", u8"Собственный сервер") \
   X(console_setting_host, u8"服务器地址", "Server host", u8"Адрес сервера") \
@@ -234,8 +232,6 @@ struct TranslationRow {
     "Video Encode Format:", u8"Формат кодека видео:")                          \
   X(av1, u8"AV1", "AV1", "AV1")                                                \
   X(h264, u8"H.264", "H.264", "H.264")                                         \
-  X(enable_hardware_video_codec, u8"启用硬件编解码器:",                        \
-    "Enable Hardware Video Codec:", u8"Использовать аппаратный кодек:")        \
   X(enable_turn, u8"启用中继服务:",                                            \
     "Enable TURN Service:", u8"Включить TURN-сервис:")                         \
   X(force_relay, u8"强制中继连接:", "Force Relay:", u8"Только через реле:")   \

apps/desktop/src/gui/features/settings/settings_manager.cpp

@@ -465,8 +465,6 @@ int SettingsManager::Load() {
       static_cast<int>(owner_.config_center_->GetLanguage()));
   owner_.video_encode_format_button_value_ =
       static_cast<int>(owner_.config_center_->GetVideoEncodeFormat());
-  owner_.enable_hardware_video_codec_ =
-      owner_.config_center_->IsHardwareVideoCodec();
   owner_.enable_turn_ = owner_.config_center_->IsEnableTurn();
   owner_.enable_self_hosted_ = owner_.config_center_->IsSelfHosted();
   owner_.enable_autostart_ = owner_.config_center_->IsEnableAutostart();
@@ -486,8 +484,6 @@ int SettingsManager::Load() {
   owner_.language_button_value_last_ = owner_.language_button_value_;
   owner_.video_encode_format_button_value_last_ =
       owner_.video_encode_format_button_value_;
-  owner_.enable_hardware_video_codec_last_ =
-      owner_.enable_hardware_video_codec_;
   owner_.enable_turn_last_ = owner_.enable_turn_;
   owner_.enable_self_hosted_last_ = owner_.enable_self_hosted_;
   owner_.enable_autostart_last_ = owner_.enable_autostart_;

apps/desktop/src/gui/features/settings/settings_manager.h

@@ -63,7 +63,7 @@ private:
     int legacy_video_quality;
     int legacy_video_frame_rate;
     int video_encode_format;
-    bool enable_hardware_video_codec;
+    bool legacy_enable_hardware_video_codec;
     bool enable_turn;
     bool enable_srtp;
     unsigned char key[16];
@@ -77,7 +77,7 @@ private:
     int legacy_video_quality;
     int legacy_video_frame_rate;
     int video_encode_format;
-    bool enable_hardware_video_codec;
+    bool legacy_enable_hardware_video_codec;
     bool enable_turn;
     bool enable_srtp;
     unsigned char key[16];

apps/desktop/src/gui/runtime/gui_runtime.cpp

@@ -237,7 +237,8 @@ int GuiRuntime::CreateConnectionPeer() {
   strncpy(params_.log_path, dll_log_path_.c_str(),
           sizeof(params_.log_path) - 1);
   params_.log_path[sizeof(params_.log_path) - 1] = '\0';
-  params_.hardware_acceleration = config_center_->IsHardwareVideoCodec();
+  // MiniRTC selects the available hardware backend and falls back to software.
+  params_.hardware_acceleration = true;
 #if defined(_WIN32) || (defined(__linux__) && !defined(__OHOS__)) || defined(__APPLE__)
   // Windows and Linux retain pooled CPU NV12 frames or CUDA device frames;
   // macOS retains VideoToolbox CVPixelBuffers for direct Metal sampling. All

apps/desktop/src/gui/runtime/runtime_state.h

@@ -149,14 +149,12 @@ struct UserSettingsState {
   char connection_login_identity_[17] = "";
   int language_button_value_ = 0;
   int video_encode_format_button_value_ = 0;
-  bool enable_hardware_video_codec_ = true;
   bool enable_turn_ = true;
   char signal_server_ip_[256] = "api.crossdesk.cn";
   char signal_server_port_[6] = "9099";
   bool enable_self_hosted_ = false;
   int language_button_value_last_ = 0;
   int video_encode_format_button_value_last_ = 0;
-  bool enable_hardware_video_codec_last_ = false;
   bool enable_turn_last_ = true;
   bool enable_self_hosted_last_ = false;
   bool enable_autostart_ = false;

apps/desktop/src/gui/ui/main_window.slint

@@ -69,7 +69,6 @@ export global UiStrings {
     in-out property <string> capture-method: "Capture method";
     in-out property <string> capture-method-auto: "Auto";
     in-out property <string> codec: "Video codec";
-    in-out property <string> hardware-codec: "Hardware video codec";
     in-out property <string> turn-relay: "TURN relay";
     in-out property <string> force-relay: "Force relay";
     in-out property <string> self-hosted: "Self-hosted server";
@@ -456,7 +455,6 @@ export component MainWindow inherits Window {
     in property <bool> capture-method-visible: false;
     in-out property <int> capture-method-index: 0;
     in-out property <int> codec-index: 0;
-    in-out property <bool> hardware-codec-enabled: true;
     in-out property <bool> turn-enabled: true;
     in-out property <bool> force-relay-enabled: false;
     changed turn-enabled => {
@@ -484,9 +482,6 @@ export component MainWindow inherits Window {
     in-out property <string> server-port: "";
     in-out property <string> self-host-settings-error: "";
     in property <bool> settings-session-active: false;
-    // Keep the setting visible on every platform. Unsupported builds expose it
-    // as disabled so the fixed settings layout never turns into a blank row.
-    in property <bool> hardware-codec-available: true;
 
     callback copy-local-id() -> bool;
     callback toggle-password-visibility;
@@ -2175,16 +2170,15 @@ export component MainWindow inherits Window {
                         }
                         SettingsGroup {
                             title: GalleryStrings.tr("视频", "Video", "Видео");
-                            rows: root.capture-method-visible ? 3 : 2;
+                            rows: root.capture-method-visible ? 2 : 1;
                             if root.capture-method-visible: SettingsRow {
                                 label: UiStrings.capture-method; enabled: !root.settings-session-active;
                                 SettingsSelect { x: parent.width - 116px; y: 4px; width: 104px; enabled: !root.settings-session-active; model: [UiStrings.capture-method-auto, "DXGI", "WGC", "GDI"]; current-index <=> root.capture-method-index; }
                             }
                             SettingsRow {
-                                label: UiStrings.codec; enabled: !root.settings-session-active;
+                                label: UiStrings.codec; enabled: !root.settings-session-active; divider: false;
                                 SettingsSelect { x: parent.width - 116px; y: 4px; width: 104px; enabled: !root.settings-session-active; model: [UiStrings.codec-h264, UiStrings.codec-av1]; current-index <=> root.codec-index; }
                             }
-                            SettingsToggleRow { label: UiStrings.hardware-codec; checked <=> root.hardware-codec-enabled; enabled: root.hardware-codec-available && !root.settings-session-active; divider: false; }
                         }
                         SettingsGroup {
                             title: GalleryStrings.tr("网络连接", "Network", "Сеть"); rows: 3;

apps/desktop/src/gui/ui/ui_localization.h

@@ -93,8 +93,6 @@ inline int ApplyMainWindowStrings(
   strings.set_capture_method_auto(
       Text(localization::screen_capture_method_auto[language]));
   strings.set_codec(Text(localization::video_encode_format[language]));
-  strings.set_hardware_codec(
-      Text(localization::enable_hardware_video_codec[language]));
   strings.set_turn_relay(Text(localization::enable_turn[language]));
   strings.set_force_relay(Text(localization::force_relay[language]));
   strings.set_self_hosted(