kc3-lang/SDL/src/video/mir/SDL_mirwindow.c

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• Hash : b72938c8
  Author :
  Date : 2015-04-20T12:22:44
  

  Windows: Always set the system timer resolution to 1ms by default. An existing hint lets apps that don't need the timer resolution changed avoid this, to save battery, etc, but this fixes several problems in timing, audio callbacks not firing fast enough, etc. Fixes Bugzilla #2944.

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• src/video/mir/SDL_mirwindow.c

• /*
    Simple DirectMedia Layer
    Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
  
    This software is provided 'as-is', without any express or implied
    warranty.  In no event will the authors be held liable for any damages
    arising from the use of this software.
  
    Permission is granted to anyone to use this software for any purpose,
    including commercial applications, and to alter it and redistribute it
    freely, subject to the following restrictions:
  
    1. The origin of this software must not be misrepresented; you must not
       claim that you wrote the original software. If you use this software
       in a product, an acknowledgment in the product documentation would be
       appreciated but is not required.
    2. Altered source versions must be plainly marked as such, and must not be
       misrepresented as being the original software.
    3. This notice may not be removed or altered from any source distribution.
  */
  
  /*
    Contributed by Brandon Schaefer, <brandon.schaefer@canonical.com>
  */
  
  #include "../../SDL_internal.h"
  
  #if SDL_VIDEO_DRIVER_MIR
  
  #include "../SDL_egl_c.h"
  #include "../SDL_sysvideo.h"
  
  #include "SDL_mirevents.h"
  #include "SDL_mirwindow.h"
  
  #include "SDL_mirdyn.h"
  
  int
  IsSurfaceValid(MIR_Window* mir_window)
  {
      if (!MIR_mir_surface_is_valid(mir_window->surface)) {
          const char* error = MIR_mir_surface_get_error_message(mir_window->surface);
          return SDL_SetError("Failed to created a mir surface: %s", error);
      }
  
      return 0;
  }
  
  MirPixelFormat
  FindValidPixelFormat(MIR_Data* mir_data)
  {
      unsigned int pf_size = 32;
      unsigned int valid_formats;
      unsigned int f;
  
      MirPixelFormat formats[pf_size];
      MIR_mir_connection_get_available_surface_formats(mir_data->connection, formats,
                                                   pf_size, &valid_formats);
  
      for (f = 0; f < valid_formats; f++) {
          MirPixelFormat cur_pf = formats[f];
  
          if (cur_pf == mir_pixel_format_abgr_8888 ||
              cur_pf == mir_pixel_format_xbgr_8888 ||
              cur_pf == mir_pixel_format_argb_8888 ||
              cur_pf == mir_pixel_format_xrgb_8888) {
  
              return cur_pf;
          }
      }
  
      return mir_pixel_format_invalid;
  }
  
  int
  MIR_CreateWindow(_THIS, SDL_Window* window)
  {
      MIR_Window* mir_window;
      MIR_Data* mir_data;
  
      MirSurfaceParameters surfaceparm =
      {
          .name = "MirSurface",
          .width = window->w,
          .height = window->h,
          .pixel_format = mir_pixel_format_invalid,
          .buffer_usage = mir_buffer_usage_hardware,
          .output_id = mir_display_output_id_invalid
      };
  
      MirEventDelegate delegate = {
          MIR_HandleInput,
          window
      };
  
      mir_window = SDL_calloc(1, sizeof(MIR_Window));
      if (!mir_window)
          return SDL_OutOfMemory();
  
      mir_data = _this->driverdata;
      window->driverdata = mir_window;
  
      if (mir_data->software)
          surfaceparm.buffer_usage = mir_buffer_usage_software;
  
      if (window->x == SDL_WINDOWPOS_UNDEFINED)
          window->x = 0;
  
      if (window->y == SDL_WINDOWPOS_UNDEFINED)
          window->y = 0;
  
      mir_window->mir_data = mir_data;
      mir_window->sdl_window = window;
  
      surfaceparm.pixel_format = FindValidPixelFormat(mir_data);
      if (surfaceparm.pixel_format == mir_pixel_format_invalid) {
          return SDL_SetError("Failed to find a valid pixel format.");
      }
  
      mir_window->surface = MIR_mir_connection_create_surface_sync(mir_data->connection, &surfaceparm);
      if (!MIR_mir_surface_is_valid(mir_window->surface)) {
          const char* error = MIR_mir_surface_get_error_message(mir_window->surface);
          return SDL_SetError("Failed to created a mir surface: %s", error);
      }
  
      if (window->flags & SDL_WINDOW_OPENGL) {
          EGLNativeWindowType egl_native_window =
                          (EGLNativeWindowType)MIR_mir_surface_get_egl_native_window(mir_window->surface);
  
          mir_window->egl_surface = SDL_EGL_CreateSurface(_this, egl_native_window);
  
          if (mir_window->egl_surface == EGL_NO_SURFACE) {
              return SDL_SetError("Failed to created a window surface %p",
                                  _this->egl_data->egl_display);
          }
      }
      else {
          mir_window->egl_surface = EGL_NO_SURFACE;
      }
  
      MIR_mir_surface_set_event_handler(mir_window->surface, &delegate);
  
      return 0;
  }
  
  void
  MIR_DestroyWindow(_THIS, SDL_Window* window)
  {
      MIR_Data* mir_data = _this->driverdata;
      MIR_Window* mir_window = window->driverdata;
  
      if (mir_data) {
          SDL_EGL_DestroySurface(_this, mir_window->egl_surface);
          MIR_mir_surface_release_sync(mir_window->surface);
  
          SDL_free(mir_window);
      }
      window->driverdata = NULL;
  }
  
  SDL_bool
  MIR_GetWindowWMInfo(_THIS, SDL_Window* window, SDL_SysWMinfo* info)
  {
      if (info->version.major == SDL_MAJOR_VERSION &&
          info->version.minor == SDL_MINOR_VERSION) {
          MIR_Window* mir_window = window->driverdata;
  
          info->subsystem = SDL_SYSWM_MIR;
          info->info.mir.connection = mir_window->mir_data->connection;
          info->info.mir.surface = mir_window->surface;
  
          return SDL_TRUE;
      }
  
      return SDL_FALSE;
  }
  
  void
  MIR_SetWindowFullscreen(_THIS, SDL_Window* window,
                          SDL_VideoDisplay* display,
                          SDL_bool fullscreen)
  {
      MIR_Window* mir_window = window->driverdata;
  
      if (IsSurfaceValid(mir_window) < 0)
          return;
  
      if (fullscreen) {
          MIR_mir_surface_set_state(mir_window->surface, mir_surface_state_fullscreen);
      } else {
          MIR_mir_surface_set_state(mir_window->surface, mir_surface_state_restored);
      }
  }
  
  void
  MIR_MaximizeWindow(_THIS, SDL_Window* window)
  {
      MIR_Window* mir_window = window->driverdata;
  
      if (IsSurfaceValid(mir_window) < 0)
          return;
  
      MIR_mir_surface_set_state(mir_window->surface, mir_surface_state_maximized);
  }
  
  void
  MIR_MinimizeWindow(_THIS, SDL_Window* window)
  {
      MIR_Window* mir_window = window->driverdata;
  
      if (IsSurfaceValid(mir_window) < 0)
          return;
  
      MIR_mir_surface_set_state(mir_window->surface, mir_surface_state_minimized);
  }
  
  void
  MIR_RestoreWindow(_THIS, SDL_Window * window)
  {
      MIR_Window* mir_window = window->driverdata;
  
      if (IsSurfaceValid(mir_window) < 0)
          return;
  
      MIR_mir_surface_set_state(mir_window->surface, mir_surface_state_restored);
  }
  
  #endif /* SDL_VIDEO_DRIVER_MIR */
  
  /* vi: set ts=4 sw=4 expandtab: */
  

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