From 1279acafa9116b8e6502697c80fab67d2dc4a661 Mon Sep 17 00:00:00 2001
From: Steve <stephenjsweeney@battleforthesolarsystem.com>
Date: Thu, 18 Oct 2018 07:31:40 +0100
Subject: [PATCH] Allow audio setup to be defined at compile time.

---
 .gitignore        |  1 +
 src/defs.h        | 16 ++++++++++++++++
 src/system/init.c |  4 ++--
 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/.gitignore b/.gitignore
index 2fd7e82..687c8fa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -44,3 +44,4 @@ build/*
 # Misc
 .DS_Store
 
+/.errors
diff --git a/src/defs.h b/src/defs.h
index 29bce90..7f2b3d2 100644
--- a/src/defs.h
+++ b/src/defs.h
@@ -30,6 +30,22 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #define FIXED_RESOLUTION 0
 #endif
 
+#ifndef AUDIO_FREQUENCY
+#define AUDIO_FREQUENCY 44100
+#endif
+
+#ifndef AUDIO_CHANNELS
+#define AUDIO_CHANNELS 2
+#endif
+
+#ifndef AUDIO_CHUNKSIZE
+#define AUDIO_CHUNKSIZE 1024
+#endif
+
+#ifndef AUDIO_MIX_CHANNELS
+#define AUDIO_MIX_CHANNELS 64
+#endif
+
 #define _(string) getTranslatedString(string)
 
 #define PI 3.14159265358979323846
diff --git a/src/system/init.c b/src/system/init.c
index 9e80c9f..ce1e2c5 100644
--- a/src/system/init.c
+++ b/src/system/init.c
@@ -85,13 +85,13 @@ void initSDL(void)
 
 	SDL_ShowCursor(0);
 
-	if (Mix_OpenAudio(44100, MIX_DEFAULT_FORMAT, 2, 1024) == -1)
+	if (Mix_OpenAudio(AUDIO_FREQUENCY, MIX_DEFAULT_FORMAT, AUDIO_CHANNELS, AUDIO_CHUNKSIZE) == -1)
     {
         printf("Couldn't initialize SDL Mixer\n");
 		exit(1);
     }
 
-    Mix_AllocateChannels(64);
+    Mix_AllocateChannels(AUDIO_MIX_CHANNELS);
 
 	Mix_Volume(-1, app.soundVolume * MIX_MAX_VOLUME / 10);
 	Mix_VolumeMusic(app.musicVolume * MIX_MAX_VOLUME / 10);