Add get_resolution_list for Win32

gfx/display_servers/dispserv_null.c

@@ -48,9 +48,10 @@ const video_display_server_t dispserv_null = {
    null_display_server_destroy,
    null_display_server_set_window_opacity,
    null_display_server_set_window_progress,
-   NULL,
+   NULL, /* set_window_decorations */
-   NULL,
+   NULL, /* set_resolution */
-   NULL,
+   NULL, /* get_resolution_list */
+   NULL, /* get_output_options */
    "null"
 };
 

gfx/display_servers/dispserv_win32.c

@@ -282,6 +282,39 @@ static bool win32_display_server_set_resolution(void *data,
    return true;
 }
 
+unsigned win32_display_server_get_resolution_list(struct video_display_config **conf)
+{
+   unsigned i;
+   unsigned len = 0;
+
+   for (i = 0;; i++)
+   {
+      void *optr = NULL;
+      DEVMODE dm;
+
+      if (!win32_get_video_output(&dm, i, sizeof(dm)))
+         continue;
+
+      len++;
+      
+      if (*conf)
+         optr = realloc(*conf, len);
+      else
+         optr = malloc(len);
+
+      if (optr)
+         *conf = optr;
+
+      conf[i]->width       = dm.dmPelsWidth; 
+      conf[i]->height      = dm.dmPelsHeight; 
+      conf[i]->bpp         = dm.dmBitsPerPel; 
+      conf[i]->refreshrate = dm.dmDisplayFrequency;
+      conf[i]->idx         = i;
+   }
+
+   return len;
+}
+
 const video_display_server_t dispserv_win32 = {
    win32_display_server_init,
    win32_display_server_destroy,
@@ -289,6 +322,7 @@ const video_display_server_t dispserv_win32 = {
    win32_display_server_set_window_progress,
    win32_display_server_set_window_decorations,
    win32_display_server_set_resolution,
+   win32_display_server_get_resolution_list,
    NULL, /* get_output_options */
    "win32"
 };

gfx/display_servers/dispserv_x11.c

@@ -306,9 +306,10 @@ const video_display_server_t dispserv_x11 = {
    x11_display_server_init,
    x11_display_server_destroy,
    x11_display_server_set_window_opacity,
-   NULL,
+   NULL, /* set_window_progress */
    x11_display_server_set_window_decorations,
    x11_display_server_set_resolution,
+   NULL, /* get_resolution_list */
    x11_display_server_get_output_options,
    "x11"
 };

gfx/video_display_server.h

@@ -23,6 +23,16 @@
 
 RETRO_BEGIN_DECLS
 
+typedef struct video_display_config
+{
+   unsigned width;
+   unsigned height;
+   unsigned bpp;
+   unsigned refreshrate;
+   unsigned idx;
+   bool current;
+} video_display_config_t;
+
 typedef struct video_display_server
 {
    void *(*init)(void);
@@ -32,6 +42,7 @@ typedef struct video_display_server
    bool (*set_window_decorations)(void *data, bool on);
    bool (*switch_resolution)(void *data, unsigned width,
          unsigned height, int int_hz, float hz, int center);
+   unsigned (*get_resolution_list)(struct video_display_config **conf);
    const char *(*get_output_options)(void *data);
    const char *ident;
 } video_display_server_t;