RetroArch/settings.c

#include "general.h"
#include "conf/config_file.h"
#include "config.h.def"
#include <assert.h>
#include <string.h>
#include "hqflt/filters.h"

struct settings g_settings;

static void set_defaults(void)
{
   const char *def_video = NULL;
   const char *def_audio = NULL;

   switch (VIDEO_DEFAULT_DRIVER)
   {
      case VIDEO_GL:
         def_video = "glfw";
         break;
      default:
         break;
   }

   switch (AUDIO_DEFAULT_DRIVER)
   {
      case AUDIO_RSOUND:
         def_audio = "rsound";
         break;
      case AUDIO_OSS:
         def_audio = "oss";
         break;
      case AUDIO_ALSA:
         def_audio = "alsa";
         break;
      case AUDIO_ROAR:
         def_audio = "roar";
         break;
      case AUDIO_AL:
         def_audio = "openal";
         break;
      default:
         break;
   }

   // No input atm ... It is in the GLFW driver.

   if (def_video)
      strncpy(g_settings.video.driver, def_video, sizeof(g_settings.video.driver) - 1);
   if (def_audio)
      strncpy(g_settings.audio.driver, def_audio, sizeof(g_settings.audio.driver) - 1);

   g_settings.video.xscale = xscale;
   g_settings.video.yscale = yscale;
   g_settings.video.fullscreen = fullscreen;
   g_settings.video.fullscreen_x = fullscreen_x;
   g_settings.video.fullscreen_y = fullscreen_y;
   g_settings.video.vsync = vsync;
   g_settings.video.smooth = video_smooth;
   g_settings.video.force_aspect = force_aspect;

   g_settings.audio.enable = audio_enable;
   g_settings.audio.out_rate = out_rate;
   g_settings.audio.in_rate = in_rate;
   if (audio_device)
      strncpy(g_settings.audio.device, audio_device, sizeof(g_settings.audio.device));
   g_settings.audio.latency = out_latency;
   g_settings.audio.sync = audio_sync;
   g_settings.audio.src_quality = SAMPLERATE_QUALITY;

   assert(sizeof(g_settings.input.binds[0]) >= sizeof(snes_keybinds_1));
   assert(sizeof(g_settings.input.binds[1]) >= sizeof(snes_keybinds_2));
   memcpy(g_settings.input.binds[0], snes_keybinds_1, sizeof(snes_keybinds_1));
   memcpy(g_settings.input.binds[1], snes_keybinds_2, sizeof(snes_keybinds_2));

   g_settings.input.save_state_key = SAVE_STATE_KEY;
   g_settings.input.load_state_key = LOAD_STATE_KEY;
   g_settings.input.toggle_fullscreen_key = TOGGLE_FULLSCREEN;
   g_settings.input.axis_threshold = AXIS_THRESHOLD;
}

void parse_config(void)
{
   memset(&g_settings, 0, sizeof(struct settings));
   config_file_t *conf = NULL;

   if (strlen(g_extern.config_path) > 0)
   {
      conf = config_file_new(g_extern.config_path);
      if (!conf)
      {
         SSNES_ERR("Couldn't find config at path: \"%s\"\n", g_extern.config_path);
         exit(1);
      }
   }
   else
   {
      const char *xdg = getenv("XDG_CONFIG_HOME");
      const char *home = getenv("HOME");
      if (xdg)
      {
         char conf_path[strlen(xdg) + strlen("/ssnes ")];
         strcpy(conf_path, xdg);
         strcat(conf_path, "/ssnes");
         conf = config_file_new(conf_path);
      }
      else if (home)
      {
         char conf_path[strlen(home) + strlen("/.ssnesrc ")];
         strcpy(conf_path, xdg);
         strcat(conf_path, "/.ssnesrc");
         conf = config_file_new(conf_path);
      }
      else // Try /etc/ssnes.conf as a final test ...
         conf = config_file_new("/etc/ssnes.conf");
   }

   set_defaults();
   if (conf == NULL)
      return;

   int tmp_int;
   double tmp_double;
   bool tmp_bool;
   char *tmp_str;

   // Video settings.
   if (config_get_double(conf, "video_xscale", &tmp_double))
      g_settings.video.xscale = tmp_double;

   if (config_get_double(conf, "video_yscale", &tmp_double))
      g_settings.video.yscale = tmp_double;

   if (config_get_int(conf, "video_fullscreen_x", &tmp_int))
      g_settings.video.fullscreen_x = tmp_int;

   if (config_get_int(conf, "video_fullscreen_y", &tmp_int))
      g_settings.video.fullscreen_y = tmp_int;

   if (config_get_bool(conf, "video_vsync", &tmp_bool))
      g_settings.video.vsync = tmp_bool;

   if (config_get_bool(conf, "video_smooth", &tmp_bool))
      g_settings.video.smooth = tmp_bool;

   if (config_get_bool(conf, "video_force_aspect", &tmp_bool))
      g_settings.video.force_aspect = tmp_bool;

   if (config_get_string(conf, "video_cg_shader", &tmp_str))
   {
      strncpy(g_settings.video.cg_shader_path, tmp_str, sizeof(g_settings.video.cg_shader_path) - 1);
      free(tmp_str);
   }

#ifdef HAVE_FILTER
   if (config_get_string(conf, "video_filter", &tmp_str))
   {
      unsigned filter = 0;
      if (strcasecmp(FILTER_HQ2X_STR, tmp_str) == 0)
         filter = FILTER_HQ2X;
      else if (strcasecmp(FILTER_HQ4X_STR, tmp_str) == 0)
         filter = FILTER_HQ4X;
      else if (strcasecmp(FILTER_GRAYSCALE_STR, tmp_str) == 0)
         filter = FILTER_GRAYSCALE;
      else if (strcasecmp(FILTER_BLEED_STR, tmp_str) == 0)
         filter = FILTER_BLEED;
      else if (strcasecmp(FILTER_NTSC_STR, tmp_str) == 0)
         filter = FILTER_NTSC;
      else
      {
         SSNES_ERR(
               "Invalid filter... Valid filters are:\n"
               "\t%s\n"
               "\t%s\n"
               "\t%s\n"
               "\t%s\n"
               "\t%s\n", 
               FILTER_HQ2X_STR, FILTER_HQ4X_STR, FILTER_GRAYSCALE_STR,
               FILTER_BLEED_STR, FILTER_NTSC_STR);
         exit(1);
      }

      free(tmp_str);
      g_settings.video.filter = filter;
   }
#endif

   // Input Settings.
   if (config_get_double(conf, "input_axis_threshold", &tmp_double))
      g_settings.input.axis_threshold = tmp_double;

   // Audio settings.
   if (config_get_bool(conf, "audio_enable", &tmp_bool))
      g_settings.audio.enable = tmp_bool;

   if (config_get_int(conf, "audio_out_rate", &tmp_int))
      g_settings.audio.out_rate = tmp_int;

   if (config_get_int(conf, "audio_in_rate", &tmp_int))
      g_settings.audio.in_rate = tmp_int;

   if (config_get_string(conf, "audio_device", &tmp_str))
   {
      strncpy(g_settings.audio.device, tmp_str, sizeof(g_settings.audio.device) - 1);
      free(tmp_str);
   }

   if (config_get_int(conf, "audio_latency", &tmp_int))
      g_settings.audio.latency = tmp_int;

   if (config_get_bool(conf, "audio_sync", &tmp_bool))
      g_settings.audio.sync = tmp_bool;

   if (config_get_int(conf, "audio_src_quality", &tmp_int))
   {
      int quals[] = { SRC_ZERO_ORDER_HOLD, SRC_LINEAR, SRC_SINC_FASTEST, 
         SRC_SINC_MEDIUM_QUALITY, SRC_SINC_BEST_QUALITY };

      if (tmp_int > 0 && tmp_int < 6)
         g_settings.audio.src_quality = quals[tmp_int];
   }

   if (config_get_string(conf, "video_driver", &tmp_str))
   {
      strncpy(g_settings.video.driver, tmp_str, sizeof(g_settings.video.driver) - 1);
      free(tmp_str);
   }
   if (config_get_string(conf, "audio_driver", &tmp_str))
   {
      strncpy(g_settings.audio.driver, tmp_str, sizeof(g_settings.audio.driver) - 1);
      free(tmp_str);
   }

   if (config_get_string(conf, "video_cg_shader_path", &tmp_str))
   {
      strncpy(g_settings.video.cg_shader_path, tmp_str, sizeof(g_settings.video.cg_shader_path) - 1);
      free(tmp_str);
   }

   // TODO: Keybinds.

   config_file_free(conf);
}