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Support eglstream #52
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      f163cb9
              
                Merge remote-tracking branch 'upstream/master'
              
              
                 fc267c1
              
                Merge remote-tracking branch 'upstream/master'
              
              
                 6ad3367
              
                Merge remote-tracking branch 'upstream/master'
              
              
                 0d59e1a
              
                Merge remote-tracking branch 'upstream/master'
              
              
                 497db10
              
                Merge remote-tracking branch 'upstream/master'
              
              
                 6498e88
              
                Merge remote-tracking branch 'upstream/master'
              
              
                 631076a
              
                Merge remote-tracking branch 'upstream/master'
              
              
                 f768b00
              
                Support EGLStream.
              
              
                 da721c6
              
                Fix build error.
              
              
                 f06beaa
              
                Fix for review.
              
              
                 a8fd283
              
                Revert "Support EGLStream."
              
              
                 956b045
              
                Merge remote-tracking branch 'upstream/master'
              
              
                 71b7824
              
                Merge remote-tracking branch 'origin/master' into support-eglstream
              
              
                 b17ff6d
              
                Merge remote-tracking branch 'upstream/master'
              
              
                 076247c
              
                Fix for review.
              
              
                 0cd98a6
              
                Merge remote-tracking branch 'origin/master' into support-eglstream
              
              
                 8c6b973
              
                Fix for review.
              
              
                 9d99dce
              
                Fix for review.
              
              
                 424a534
              
                Fix for review.
              
              
                 9750544
              
                Fix for review.
              
              
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              | Original file line number | Diff line number | Diff line change | 
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| # Overview | ||
| 
     | 
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| This is the example of DRM backend with EGLStream. | ||
| 
     | 
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| ## Building | ||
| 
     | 
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| ```Shell | ||
| $ mkdir build | ||
| $ cd build | ||
| $ cmake -DUSER_PROJECT_PATH=examples/flutter-drm-eglstream-backend .. | ||
| $ cmake --build . | ||
| ``` | ||
| 
     | 
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| ## Running Flutter app | ||
| 
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| You need to switch from GUI which is running X11 or Wayland to the Character User Interface (CUI). In addition, `FLUTTER_DRM_DEVICE` must be set properly. The default value is `/dev/dri/card0`. | ||
| 
     | 
||
| ```Shell | ||
| $ Ctrl + Alt + F3 # Switching to CUI | ||
| $ FLUTTER_DRM_DEVICE="/dev/dri/card1" ./flutter-drm-eglstream-backend FLUTTER_BUNDLE_PATH | ||
| ``` | ||
| 
     | 
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| Note that replace `FLUTTER_BUNDLE_PATH` with the flutter bundle path you want to use like ./sample/build/linux/x64/release/bundle. | ||
| 
     | 
||
| If you want to switch back from CUI to GUI, run `Ctrl + Alt + F2` keys in a terminal. | 
        
          
          
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  examples/flutter-drm-eglstream-backend/cmake/user_build.cmake
  
  
      
      
   
        
      
      
    
  
    
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              | Original file line number | Diff line number | Diff line change | 
|---|---|---|
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| cmake_minimum_required(VERSION 3.10) | ||
| 
     | 
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| # user binary name. | ||
| set(TARGET flutter-drm-eglstream-backend) | ||
| 
     | 
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| # source files for user apps. | ||
| set(USER_APP_SRCS | ||
| examples/flutter-drm-eglstream-backend/main.cc | ||
| ) | ||
| 
     | 
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| # header files for user apps. | ||
| set(USER_APP_INCLUDE_DIRS | ||
| ## Public APIs for developers (Don't edit!). | ||
| src/client_wrapper/include | ||
| src/flutter/shell/platform/common/client_wrapper | ||
| src/flutter/shell/platform/common/client_wrapper/include/flutter | ||
| src/flutter/shell/platform/common/public | ||
| src/flutter/shell/platform/linux_embedded/public | ||
| src/public/include | ||
| ## header file include path for user apps. | ||
| examples/flutter-drm-eglstream-backend | ||
| ) | ||
| 
     | 
||
| # link libraries for user apps. | ||
| set(USER_APP_LIBRARIES "") | 
  
    
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              | Original file line number | Diff line number | Diff line change | 
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| @@ -0,0 +1,8 @@ | ||
| cmake_minimum_required(VERSION 3.10) | ||
| 
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| # Flutter embedder configurations. | ||
| # See: https://github.com/sony/flutter-embedded-linux#user-configuration-parameters-cmake-options | ||
| set(BACKEND_TYPE DRM-GBM) | ||
| set(DESKTOP_SHELL OFF) | ||
| set(USE_VIRTUAL_KEYBOARD OFF) | ||
| set(USE_GLES3 OFF) | 
  
    
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              | Original file line number | Diff line number | Diff line change | 
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| // Copyright 2021 Sony Corporation. All rights reserved. | ||
| // Use of this source code is governed by a BSD-style license that can be | ||
| // found in the LICENSE file. | ||
| 
     | 
||
| #include <flutter/dart_project.h> | ||
| #include <flutter/flutter_view_controller.h> | ||
| 
     | 
||
| #include <chrono> | ||
| #include <iostream> | ||
| #include <memory> | ||
| #include <string> | ||
| #include <thread> | ||
| 
     | 
||
| static void PrintHelp() { | ||
| std::cout << "Usage: ./${execute filename} {Flutter project bundle path}" | ||
| << std::endl; | ||
| } | ||
| 
     | 
||
| int main(int argc, char** argv) { | ||
| if (argc != 2) { | ||
| PrintHelp(); | ||
| return 0; | ||
| } | ||
| 
     | 
||
| bool show_cursor = true; | ||
| std::string str(argv[1]); | ||
| std::wstring fl_path(str.begin(), str.end()); | ||
| 
     | 
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| // The project to run. | ||
| flutter::DartProject project(fl_path); | ||
| auto command_line_arguments = std::vector<std::string>(); | ||
| project.set_dart_entrypoint_arguments(std::move(command_line_arguments)); | ||
| 
     | 
||
| // The Flutter instance hosted by this window. | ||
| int width = 640; | ||
| int height = 480; | ||
| auto flutter_controller = std::make_unique<flutter::FlutterViewController>( | ||
| flutter::FlutterViewController::ViewMode::kFullscreen, width, height, | ||
| show_cursor, project); | ||
| 
     | 
||
| // Ensure that basic setup of the controller was successful. | ||
| if (!flutter_controller->engine() || !flutter_controller->view()) { | ||
| return 0; | ||
| } | ||
| 
     | 
||
| // Main loop. | ||
| auto next_flutter_event_time = | ||
| std::chrono::steady_clock::time_point::clock::now(); | ||
| while (flutter_controller->view()->DispatchEvent()) { | ||
| // Wait until the next event. | ||
| { | ||
| auto wait_duration = | ||
| std::max(std::chrono::nanoseconds(0), | ||
| next_flutter_event_time - | ||
| std::chrono::steady_clock::time_point::clock::now()); | ||
| std::this_thread::sleep_for( | ||
| std::chrono::duration_cast<std::chrono::milliseconds>(wait_duration)); | ||
| } | ||
| 
     | 
||
| // Processes any pending events in the Flutter engine, and returns the | ||
| // number of nanoseconds until the next scheduled event (or max, if none). | ||
| auto wait_duration = flutter_controller->engine()->ProcessMessages(); | ||
| { | ||
| auto next_event_time = std::chrono::steady_clock::time_point::max(); | ||
| if (wait_duration != std::chrono::nanoseconds::max()) { | ||
| auto next_wakeup = | ||
| std::max(std::chrono::steady_clock::time_point::max(), | ||
| std::chrono::steady_clock::time_point::clock::now() + | ||
| wait_duration); | ||
| next_event_time = std::min(next_event_time, next_wakeup); | ||
| } else { | ||
| // Wait 1/60 [sec] = 13 [msec] if no events. | ||
| next_event_time = std::chrono::steady_clock::time_point::clock::now() + | ||
| std::chrono::milliseconds(13); | ||
| } | ||
| next_flutter_event_time = | ||
| std::max(next_flutter_event_time, next_event_time); | ||
| } | ||
| } | ||
| 
     | 
||
| return 0; | ||
| } | 
  
    
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