Add back resampler selection code

audio/resampler.c

@@ -22,12 +22,35 @@
 
 #include "../general.h"
 
+static const rarch_resampler_t *backends[] = {
+   &sinc_resampler,
+};
+
 bool rarch_resampler_realloc(void **re, const rarch_resampler_t **backend, const char *ident, double bw_ratio)
 {
    if (*re && *backend)
       (*backend)->free(*re);
 
-   *backend = &sinc_resampler;
+   *re      = NULL;
+   *backend = NULL;
+
+   if (ident)
+   {
+      for (unsigned i = 0; i < ARRAY_SIZE(backends); i++)
+      {
+         if (strcmp(backends[i]->ident, ident) == 0)
+         {
+            *backend = backends[i];
+            break;
+         }
+      }
+   }
+   else
+      *backend = backends[0];
+
+   if (!*backend)
+      return false;
+
    *re = (*backend)->init(bw_ratio);
 
    if (!*re)
@@ -38,4 +61,3 @@ bool rarch_resampler_realloc(void **re, const rarch_resampler_t **backend, const
 
    return true;
 }
-

audio/resampler.h

@@ -65,13 +65,9 @@ bool rarch_resampler_realloc(void **re, const rarch_resampler_t **backend, const
    *handle = NULL; \
 } while(0)
 
-#ifdef RARCH_CONSOLE
-#define rarch_resampler_process(backend, handle, data) resampler_sinc_process(handle, data)
-#else
 #define rarch_resampler_process(backend, handle, data) do { \
    (backend)->process(handle, data); \
 } while(0)
-#endif
 
 #endif
 

config.def.h

@@ -442,6 +442,9 @@ static const int out_latency = 64;
 // Will sync audio. (recommended) 
 static const bool audio_sync = true;
 
+// Default resampler
+static const char *audio_resampler = "sinc";
+
 // Experimental rate control
 #if defined(GEKKO) || !defined(RARCH_CONSOLE)
 static const bool rate_control = true;

retroarch.cfg

@@ -194,6 +194,10 @@
 # Audio output samplerate.
 # audio_out_rate = 48000
 
+# Which resampler to use.
+# Default will use "sinc".
+# audio_resampler =
+
 # Audio driver backend. Depending on configuration possible candidates are: alsa, pulse, oss, jack, rsound, roar, openal, sdl, xaudio.
 # audio_driver =
 

settings.c

@@ -290,6 +290,7 @@ void config_set_defaults(void)
    g_settings.audio.volume = audio_volume;
    g_extern.audio_data.volume_db   = g_settings.audio.volume;
    g_extern.audio_data.volume_gain = db_to_gain(g_settings.audio.volume);
+   strlcpy(g_settings.audio.resampler, audio_resampler, sizeof(g_settings.audio.resampler));
 
    g_settings.rewind_enable = rewind_enable;
    g_settings.rewind_buffer_size = rewind_buffer_size;
@@ -892,6 +893,7 @@ bool config_load_file(const char *path, bool set_defaults)
    CONFIG_GET_BOOL(audio.rate_control, "audio_rate_control");
    CONFIG_GET_FLOAT(audio.rate_control_delta, "audio_rate_control_delta");
    CONFIG_GET_FLOAT(audio.volume, "audio_volume");
+   CONFIG_GET_STRING(audio.resampler, "audio_resampler");
    g_extern.audio_data.volume_db   = g_settings.audio.volume;
    g_extern.audio_data.volume_gain = db_to_gain(g_settings.audio.volume);
 
@@ -1271,6 +1273,7 @@ bool config_save_file(const char *path)
    config_set_int(conf, "audio_out_rate", g_settings.audio.out_rate);
 
    config_set_path(conf, "system_directory", *g_settings.system_directory ? g_settings.system_directory : "default");
+   config_set_string(conf, "audio_resampler", g_settings.audio.resampler);
    config_set_path(conf, "savefile_directory", *g_extern.savefile_dir ? g_extern.savefile_dir : "default");
    config_set_path(conf, "savestate_directory", *g_extern.savestate_dir ? g_extern.savestate_dir : "default");
    config_set_path(conf, "video_shader_dir", *g_settings.video.shader_dir ? g_settings.video.shader_dir : "default");