Add external output support (#3)

The eom API only supports elm_win. So TizenWindowElementary supports this.
Currently, only HDMI type is available. It can be extended according to the requirements.

https://docs.tizen.org/application/native/guides/device/ext-output/

+)
How to map input device.(in sdb shell)
1. Check to input event node. 
$) winfo -input_devices
2. Set to input and output event node
$) winfo -input_output_set [input(ex./dev/input/eventX)] [output(ex.HDMIA-1)]

related pr : flutter-tizen/flutter-tizen#465

Co-authored-by: Swift Kim <[email protected]>

Author: JSUYA

flutter/shell/platform/tizen/BUILD.gn

@@ -38,6 +38,7 @@ config("flutter_tizen_config") {
     "${sysroot_path}/usr/include/elementary-1",
     "${sysroot_path}/usr/include/emile-1",
     "${sysroot_path}/usr/include/eo-1",
+    "${sysroot_path}/usr/include/eom",
     "${sysroot_path}/usr/include/ethumb-1",
     "${sysroot_path}/usr/include/ethumb-client-1",
     "${sysroot_path}/usr/include/evas-1",
@@ -127,6 +128,7 @@ template("embedder") {
       "efl-extension",
       "eina",
       "elementary",
+      "eom",
       "evas",
       "feedback",
       "flutter_engine",

flutter/shell/platform/tizen/flutter_tizen.cc

@@ -204,7 +204,8 @@ FlutterDesktopViewRef FlutterDesktopViewCreateFromNewWindow(
   if (window_properties.renderer_type == FlutterDesktopRendererType::kEvasGL) {
     window = std::make_unique<flutter::TizenWindowElementary>(
         window_geometry, window_properties.transparent,
-        window_properties.focusable, window_properties.top_level);
+        window_properties.focusable, window_properties.top_level,
+        window_properties.external_output_type);
   } else {
 #ifndef WEARABLE_PROFILE
     window = std::make_unique<flutter::TizenWindowEcoreWl2>(

flutter/shell/platform/tizen/public/flutter_tizen.h

@@ -38,6 +38,13 @@ typedef enum {
   kMouseMove,
 } FlutterDesktopPointerEventType;
 
+typedef enum {
+  // No external output.
+  kNone,
+  // Display to the HDMI external output.
+  kHDMI,
+} FlutterDesktopExternalOutputType;
+
 // Properties for configuring the initial settings of a Flutter window.
 typedef struct {
   // The x-coordinate of the top left corner of the window.
@@ -56,6 +63,8 @@ typedef struct {
   bool top_level;
   // The renderer type of the engine.
   FlutterDesktopRendererType renderer_type;
+  // The external output type of the window.
+  FlutterDesktopExternalOutputType external_output_type;
 } FlutterDesktopWindowProperties;
 
 // Properties for configuring the initial settings of a Flutter view.

flutter/shell/platform/tizen/tizen_window_elementary.cc

@@ -5,6 +5,7 @@
 #include "tizen_window_elementary.h"
 
 #include <efl_extension.h>
+#include <eom.h>
 #include <ui/efl_util.h>
 
 #include "flutter/shell/platform/tizen/logger.h"
@@ -34,11 +35,20 @@ uint32_t EvasModifierToEcoreEventModifiers(const Evas_Modifier* evas_modifier) {
 
 }  // namespace
 
-TizenWindowElementary::TizenWindowElementary(TizenGeometry geometry,
-                                             bool transparent,
-                                             bool focusable,
-                                             bool top_level)
-    : TizenWindow(geometry, transparent, focusable, top_level) {
+TizenWindowElementary::TizenWindowElementary(
+    TizenGeometry geometry,
+    bool transparent,
+    bool focusable,
+    bool top_level,
+    FlutterDesktopExternalOutputType external_output_type)
+    : TizenWindow(geometry, transparent, focusable, top_level),
+      external_output_type_(external_output_type) {
+  if (external_output_type_ != FlutterDesktopExternalOutputType::kNone &&
+      !InitializeExternalOutputManager()) {
+    FT_LOG(Error) << "Failed to initialize the External Output Manager.";
+    return;
+  }
+
   if (!CreateWindow()) {
     FT_LOG(Error) << "Failed to create a platform window.";
     return;
@@ -51,6 +61,9 @@ TizenWindowElementary::TizenWindowElementary(TizenGeometry geometry,
 }
 
 TizenWindowElementary::~TizenWindowElementary() {
+  if (external_output_type_ != FlutterDesktopExternalOutputType::kNone) {
+    DestroyExternalOutputManager();
+  }
   UnregisterEventHandlers();
   DestroyWindow();
 }
@@ -69,11 +82,15 @@ bool TizenWindowElementary::CreateWindow() {
   elm_win_aux_hint_add(elm_win_, "wm.policy.win.user.geometry", "1");
 #endif
 
-  Ecore_Evas* ecore_evas =
-      ecore_evas_ecore_evas_get(evas_object_evas_get(elm_win_));
-
-  int32_t width, height;
-  ecore_evas_screen_geometry_get(ecore_evas, nullptr, nullptr, &width, &height);
+  int32_t width = 0, height = 0;
+  if (external_output_type_ != FlutterDesktopExternalOutputType::kNone) {
+    eom_get_output_resolution(external_output_id_, &width, &height);
+  } else {
+    Ecore_Evas* ecore_evas =
+        ecore_evas_ecore_evas_get(evas_object_evas_get(elm_win_));
+    ecore_evas_screen_geometry_get(ecore_evas, nullptr, nullptr, &width,
+                                   &height);
+  }
   if (width == 0 || height == 0) {
     FT_LOG(Error) << "Invalid screen size: " << width << " x " << height;
     return false;
@@ -99,6 +116,14 @@ bool TizenWindowElementary::CreateWindow() {
   evas_object_image_alpha_set(image_, EINA_TRUE);
   elm_win_resize_object_add(elm_win_, image_);
 
+  if (external_output_type_ != FlutterDesktopExternalOutputType::kNone) {
+    if (eom_set_output_window(external_output_id_, elm_win_) !=
+        EOM_ERROR_NONE) {
+      FT_LOG(Error) << "eom_set_output_window() failed.";
+      return false;
+    }
+  }
+
   return elm_win_ && image_;
 }
 
@@ -403,4 +428,54 @@ void TizenWindowElementary::PrepareInputMethod() {
       [this](std::string str) { view_delegate_->OnCommit(str); });
 }
 
+int32_t TizenWindowElementary::GetExternalOutputId() {
+  int32_t num_ids = 0;
+  eom_output_id* output_ids = eom_get_eom_output_ids(&num_ids);
+  if (!output_ids || num_ids == 0) {
+    FT_LOG(Error) << "No external output found.";
+    return 0;
+  }
+
+  eom_output_id output_id = 0;
+  for (int32_t i = 0; i < num_ids; i++) {
+    eom_output_type_e output_type = EOM_OUTPUT_TYPE_UNKNOWN;
+    eom_get_output_type(output_ids[i], &output_type);
+
+    if (external_output_type_ == FlutterDesktopExternalOutputType::kHDMI &&
+        (output_type == EOM_OUTPUT_TYPE_HDMIA ||
+         output_type == EOM_OUTPUT_TYPE_HDMIB)) {
+      output_id = output_ids[i];
+      break;
+    }
+  }
+  free(output_ids);
+  return output_id;
+}
+
+bool TizenWindowElementary::InitializeExternalOutputManager() {
+  if (eom_init()) {
+    FT_LOG(Error) << "eom_init() failed.";
+    return false;
+  }
+
+  external_output_id_ = GetExternalOutputId();
+  if (external_output_id_ == 0) {
+    FT_LOG(Error) << "Invalid external output ID.";
+    return false;
+  }
+
+  int ret = eom_set_output_attribute(external_output_id_,
+                                     EOM_OUTPUT_ATTRIBUTE_NORMAL);
+  if (ret != EOM_ERROR_NONE) {
+    FT_LOG(Error)
+        << "eom_set_output_attribute() failed. Cannot use external output.";
+    return false;
+  }
+  return true;
+}
+
+void TizenWindowElementary::DestroyExternalOutputManager() {
+  eom_deinit();
+}
+
 }  // namespace flutter

flutter/shell/platform/tizen/tizen_window_elementary.h

@@ -12,6 +12,7 @@
 #include <unordered_map>
 #include <vector>
 
+#include "flutter/shell/platform/tizen/public/flutter_tizen.h"
 #include "flutter/shell/platform/tizen/tizen_window.h"
 
 namespace flutter {
@@ -21,7 +22,8 @@ class TizenWindowElementary : public TizenWindow {
   TizenWindowElementary(TizenGeometry geometry,
                         bool transparent,
                         bool focusable,
-                        bool top_level);
+                        bool top_level,
+                        FlutterDesktopExternalOutputType external_output_type);
 
   ~TizenWindowElementary();
 
@@ -50,6 +52,12 @@ class TizenWindowElementary : public TizenWindow {
   void Show() override;
 
  private:
+  bool InitializeExternalOutputManager();
+
+  void DestroyExternalOutputManager();
+
+  int GetExternalOutputId();
+
   bool CreateWindow();
 
   void DestroyWindow();
@@ -68,6 +76,10 @@ class TizenWindowElementary : public TizenWindow {
   Evas_Smart_Cb rotation_changed_callback_ = nullptr;
   std::unordered_map<Evas_Callback_Type, Evas_Object_Event_Cb>
       evas_object_callbacks_;
+
+  int32_t external_output_id_;
+  FlutterDesktopExternalOutputType external_output_type_ =
+      FlutterDesktopExternalOutputType::kNone;
 };
 
 }  // namespace flutter

tools/generate_sysroot.py

@@ -85,6 +85,8 @@
   'jsoncpp-devel',
   'libatk',
   'libatk-bridge-2_0-0',
+  'libeom',
+  'libeom-devel',
   'libfeedback',
   'libfeedback-devel',
   'libdlog',