frontend: initial sdl overlay implementation

1 files changed, 155 insertions, 29 deletions

diff --git a/frontend/plat_sdl.c b/frontend/plat_sdl.c
index 1a1ceec..a899c15 100644
--- a/frontend/plat_sdl.c
+++ b/frontend/plat_sdl.c
@@ -16,6 +16,7 @@
 #include "libpicofe/menu.h"
 #include "plugin_lib.h"
 #include "main.h"
+#include "menu.h"
 #include "plat.h"
 #include "revision.h"
 
@@ -43,27 +44,101 @@ static const struct in_default_bind in_sdl_defbinds[] = {
   { SDLK_F6,     IN_BINDTYPE_EMU, SACTION_SCREENSHOT },
   { SDLK_F7,     IN_BINDTYPE_EMU, SACTION_TOGGLE_FPS },
   { SDLK_F8,     IN_BINDTYPE_EMU, SACTION_SWITCH_DISPMODE },
+  { SDLK_F11,    IN_BINDTYPE_EMU, SACTION_TOGGLE_FULLSCREEN },
   { SDLK_BACKSPACE, IN_BINDTYPE_EMU, SACTION_FAST_FORWARD },
   { 0, 0, 0 }
 };
 
+// XXX: maybe determine this instead..
+#define WM_DECORATION_H 32
+
 static SDL_Surface *screen;
+static SDL_Overlay *overlay;
+static int window_w, window_h;
+static int fs_w, fs_h;
+static int psx_w, psx_h;
 static void *menubg_img;
+static int in_menu, pending_resize, old_fullscreen;
 
 static int change_video_mode(int w, int h)
 {
-  screen = SDL_SetVideoMode(w, h, 16, 0);
-  if (screen == NULL) {
-    fprintf(stderr, "SDL_SetVideoMode failed: %s\n", SDL_GetError());
-    return -1;
+  psx_w = w;
+  psx_h = h;
+
+  if (overlay != NULL) {
+    SDL_FreeYUVOverlay(overlay);
+    overlay = NULL;
+  }
+
+  if (g_use_overlay && !in_menu) {
+    Uint32 flags = SDL_RESIZABLE;
+    int win_w = window_w;
+    int win_h = window_h;
+
+    if (g_fullscreen) {
+      flags |= SDL_FULLSCREEN;
+      win_w = fs_w;
+      win_h = fs_h;
+    }
+
+    screen = SDL_SetVideoMode(win_w, win_h, 0, flags);
+    if (screen == NULL) {
+      fprintf(stderr, "SDL_SetVideoMode failed: %s\n", SDL_GetError());
+      return -1;
+    }
+
+    overlay = SDL_CreateYUVOverlay(w, h, SDL_UYVY_OVERLAY, screen);
+    if (overlay != NULL) {
+      /*printf("overlay: fmt %x, planes: %d, pitch: %d, hw: %d\n",
+        overlay->format, overlay->planes, *overlay->pitches,
+        overlay->hw_overlay);*/
+
+      if ((long)overlay->pixels[0] & 3)
+        fprintf(stderr, "warning: overlay pointer is unaligned\n");
+      if (!overlay->hw_overlay)
+        fprintf(stderr, "warning: video overlay is not hardware accelerated,"
+                        " you may want to disable it.\n");
+    }
+    else {
+      fprintf(stderr, "warning: could not create overlay.\n");
+    }
   }
 
+  if (overlay == NULL) {
+    screen = SDL_SetVideoMode(w, h, 16, 0);
+    if (screen == NULL) {
+      fprintf(stderr, "SDL_SetVideoMode failed: %s\n", SDL_GetError());
+      return -1;
+    }
+
+    if (!in_menu) {
+      window_w = screen->w;
+      window_h = screen->h;
+    }
+  }
+
+  old_fullscreen = g_fullscreen;
   return 0;
 }
 
+static void event_handler(void *event_)
+{
+  SDL_Event *event = event_;
+
+  if (event->type == SDL_VIDEORESIZE) {
+    //printf("%dx%d\n", event->resize.w, event->resize.h);
+    if (overlay != NULL && !g_fullscreen && !old_fullscreen) {
+      window_w = event->resize.w;
+      window_h = event->resize.h;
+      pending_resize = 1;
+    }
+  }
+}
+
 void plat_init(void)
 {
-  int ret;
+  const SDL_VideoInfo *info;
+  int ret, h;
 
   ret = SDL_Init(SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE);
   if (ret != 0) {
@@ -71,8 +146,25 @@ void plat_init(void)
     exit(1);
   }
 
+  info = SDL_GetVideoInfo();
+  if (info != NULL) {
+    fs_w = info->current_w;
+    fs_h = info->current_h;
+  }
+
+  in_menu = 1;
   g_menuscreen_w = 640;
+  if (fs_w != 0 && g_menuscreen_w > fs_w)
+    g_menuscreen_w = fs_w;
   g_menuscreen_h = 480;
+  if (fs_h != 0) {
+    h = fs_h;
+    if (info && info->wm_available && h > WM_DECORATION_H)
+      h -= WM_DECORATION_H;
+    if (g_menuscreen_h > h)
+      g_menuscreen_h = h;
+  }
+
   ret = change_video_mode(g_menuscreen_w, g_menuscreen_h);
   if (ret != 0) {
     ret = change_video_mode(0, 0);
@@ -84,16 +176,17 @@ void plat_init(void)
               screen->w, screen->h);
       goto fail;
     }
-    g_menuscreen_w = screen->w;
-    g_menuscreen_h = screen->h;
   }
+  g_menuscreen_w = window_w = screen->w;
+  g_menuscreen_h = window_h = screen->h;
+
   SDL_WM_SetCaption("PCSX-ReARMed " REV, NULL);
 
   menubg_img = malloc(640 * 512 * 2);
   if (menubg_img == NULL)
     goto fail;
 
-  in_sdl_init(in_sdl_defbinds);
+  in_sdl_init(in_sdl_defbinds, event_handler);
   in_probe();
   pl_rearmed_cbs.only_16bpp = 1;
   return;
@@ -120,10 +213,58 @@ void *plat_gvideo_set_mode(int *w, int *h, int *bpp)
   return screen->pixels;
 }
 
+static void test_convert(void *d, const void *s, int pixels)
+{
+  unsigned int *dst = d;
+  const unsigned short *src = s;
+  int r0, g0, b0, r1, g1, b1;
+  int y0, y1, u, v;
+
+  for (; pixels > 0; src += 2, dst++, pixels -= 2) {
+    r0 =  src[0] >> 11;
+    g0 = (src[0] >> 6) & 0x1f;
+    b0 =  src[0] & 0x1f;
+    r1 =  src[1] >> 11;
+    g1 = (src[1] >> 6) & 0x1f;
+    b1 =  src[1] & 0x1f;
+    y0 = (int)((0.299f * r0) + (0.587f * g0) + (0.114f * b0));
+    y1 = (int)((0.299f * r1) + (0.587f * g1) + (0.114f * b1));
+    //u = (int)(((-0.169f * r0) + (-0.331f * g0) + ( 0.499f * b0)) * 8) + 128;
+    //v = (int)((( 0.499f * r0) + (-0.418f * g0) + (-0.0813f * b0)) * 8) + 128;
+    u = (int)(8 * 0.565f * (b0 - y0)) + 128;
+    v = (int)(8 * 0.713f * (r0 - y0)) + 128;
+    // valid Y range seems to be 16..235
+    y0 = 16 + 219 * y0 / 31;
+    y1 = 16 + 219 * y1 / 31;
+
+    if (y0 < 0 || y0 > 255 || y1 < 0 || y1 > 255
+        || u < 0 || u > 255 || v < 0 || v > 255)
+    {
+      printf("oor: %d, %d, %d, %d\n", y0, y1, u, v);
+    }
+    *dst = (y1 << 24) | (v << 16) | (y0 << 8) | u;
+  }
+}
+
 /* XXX: missing SDL_LockSurface() */
 void *plat_gvideo_flip(void)
 {
-  SDL_Flip(screen);
+  if (!in_menu && overlay != NULL) {
+    SDL_Rect dstrect = { 0, 0, screen->w, screen->h };
+    SDL_LockYUVOverlay(overlay);
+    test_convert(overlay->pixels[0], screen->pixels, overlay->w * overlay->h);
+    SDL_UnlockYUVOverlay(overlay);
+    SDL_DisplayYUVOverlay(overlay, &dstrect);
+  }
+  else
+    SDL_Flip(screen);
+
+  if (pending_resize || g_fullscreen != old_fullscreen) {
+    // must be done here so that correct buffer is returned
+    change_video_mode(psx_w, psx_h);
+    pending_resize = 0;
+  }
+
   return screen->pixels;
 }
 
@@ -133,8 +274,11 @@ void plat_gvideo_close(void)
 
 void plat_video_menu_enter(int is_rom_loaded)
 {
+  in_menu = 1;
+
   /* surface will be lost, must adjust pl_vout_buf for menu bg */
-  memcpy(menubg_img, screen->pixels, screen->w * screen->h * 2);
+  // FIXME?
+  memcpy(menubg_img, screen->pixels, psx_w * psx_h * 2);
   pl_vout_buf = menubg_img;
 
   change_video_mode(g_menuscreen_w, g_menuscreen_h);
@@ -155,6 +299,7 @@ void plat_video_menu_end(void)
 
 void plat_video_menu_leave(void)
 {
+  in_menu = 0;
 }
 
 /* unused stuff */
@@ -163,25 +308,6 @@ void *plat_prepare_screenshot(int *w, int *h, int *bpp)
   return 0;
 }
 
-int plat_cpu_clock_get(void)
-{
-  return -1;
-}
-
-int plat_cpu_clock_apply(int cpu_clock)
-{
-  return -1;
-}
-
-int plat_get_bat_capacity(void)
-{
-  return -1;
-}
-
-void plat_step_volume(int is_up)
-{
-}
-
 void plat_trigger_vibrate(int is_strong)
 {
 }