all working now

src/unix/sysdep/dsp-drivers/sdl.c

@@ -173,8 +173,8 @@ static int sdl_dsp_write(struct sysdep_dsp_struct *dsp, unsigned char *data,
 	// get stream from dsp
 	const struct sdl_info *info = (struct sdl_info *)dsp->_priv;
 
-	const int result = SDL_PutAudioStreamData(info->stream, data, len);
-	if (result != 0) {
+	const bool success = SDL_PutAudioStreamData(info->stream, data, len);
+	if (!success) {
 		fprintf(stderr, "error: SDL_PutAudioStreamData() failed: %s\n", SDL_GetError());
 		return 0;
 	}

src/unix/video-drivers/sdl.c

@@ -152,6 +152,19 @@ void sysdep_close(void)
 
 int sysdep_create_display(int depth)
 {
+   // print all video drivers and mark the one in use
+   int num_drivers = SDL_GetNumVideoDrivers();
+   const char *driver_name = SDL_GetCurrentVideoDriver();
+   fprintf(stderr, "SDL: Info: Found %d video drivers\n", num_drivers);
+   for (int i = 0; i < num_drivers; i++) {
+      const char *driver = SDL_GetVideoDriver(i);
+      fprintf(stderr, "SDL: Info: Video driver %d: %s", i, driver);
+      if (strcmp(driver, driver_name) == 0) {
+         fprintf(stderr, " (in use)");
+      }
+      fprintf(stderr, "\n");
+   }
+
    fprintf(stderr, "SDL: Info: Create display with depth %d\n", depth);
    int vid_modes_i;
 #ifdef DIRECT_HERMES 
@@ -160,8 +173,9 @@ int sysdep_create_display(int depth)
 #endif /* DIRECT_HERMES */
    int vid_mode_flag; /* Flag to set the video mode */
 
-   const SDL_DisplayMode *current_mode = SDL_GetCurrentDisplayMode(0);
-   if (current_mode != NULL) {
+   const SDL_DisplayID display = SDL_GetPrimaryDisplay();
+   const SDL_DisplayMode *current_mode = SDL_GetCurrentDisplayMode(display);
+   if (current_mode == NULL) {
       fprintf(stderr, "SDL: Error getting current display mode: %s\n", SDL_GetError());
       SDL_Quit();
       exit (OSD_NOT_OK);
@@ -189,10 +203,8 @@ int sysdep_create_display(int depth)
    // TODO how do we know if hardware acceleration is available?
    // hardware = video_info->hw_available;
 
-
-   const int display_index = 0;
    int modes_count = 0;
-   SDL_DisplayMode **modes = SDL_GetFullscreenDisplayModes(display_index, &modes_count);
+   SDL_DisplayMode **modes = SDL_GetFullscreenDisplayModes(display, &modes_count);
    /* Best video mode found */
    int best_vid_mode = -1;
    int best_width = -1;
@@ -212,10 +224,11 @@ int sysdep_create_display(int depth)
 #endif
 
 
-      for (int mode_index = 0; mode_index <= modes_count; mode_index++)
+      // last mode is NULL,
+      for (int mode_index = 0; mode_index < modes_count; mode_index++)
       {
          const SDL_DisplayMode mode = *modes[mode_index];
-         SDL_Log(" %i bpp\t%i x %i @ %iHz",
+         SDL_Log(" %i bpp\t%i x %i @ %fHz",
              SDL_BITSPERPIXEL(mode.format), mode.w, mode.h, mode.refresh_rate);
 
 #ifdef SDL_DEBUG
@@ -259,6 +272,7 @@ int sysdep_create_display(int depth)
          Vid_height = best_height;
       }
    }
+   SDL_free(modes);
 
    if( depth == 16 )
    {
@@ -952,7 +966,13 @@ void sysdep_update_keyboard()
 /* added functions */
 int sysdep_display_16bpp_capable(void)
 {
-   const SDL_DisplayMode *mode = SDL_GetCurrentDisplayMode(0);
+   const SDL_DisplayID display = SDL_GetPrimaryDisplay();
+   const SDL_DisplayMode *mode = SDL_GetCurrentDisplayMode(display);
+   if (mode == NULL)
+   {
+      fprintf(stderr, "SDL: Error getting current display mode: %s\n", SDL_GetError());
+      return false;
+   }
    const int bpp = SDL_BITSPERPIXEL(mode->format);
    return ( bpp >=16);
 }
@@ -975,7 +995,7 @@ int list_sdl_modes(struct rc_option *option, const char *arg, int priority)
    for (int mode_index = 0; mode_index <= modes_count; mode_index++)
    {
       const SDL_DisplayMode mode = *modes[mode_index];
-      printf("\t%d) Mode %d x %d @ %iHz\n",
+      printf("\t%d) Mode %d x %d @ %fHz\n",
           mode_index,
           mode.w,
           mode.h,