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src/sdl/sound.c

@@ -1,3 +1,35 @@
+/*
+ * Copyright (C) 1997-2001 Id Software, Inc.
+ * Copyright (C) 2010 Yamagi Burmeister
+ * Copyright (C) 2005 Ryan C. Gordon
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+ * USA.
+ *
+ * =======================================================================
+ *
+ * The lower layer of the sound system. It utilizes SDL for writing the
+ * sound data to the device. This file was rewritten by Yamagi to solve
+ * a lot problems arrising from the old Icculus Quake 2 SDL backend like
+ * stuttering and cracking. This implementation is based on ioQuake3s
+ * snd_sdl.c.
+ *
+ * =======================================================================
+ */  
+
 #include <SDL.h>
 #include "../client/header/client.h"
 #include "../client/sound/header/local.h"
@@ -138,7 +170,7 @@ SNDDMA_Init(void)
 		return 0;
 	}
 
-	/* Don't pollute the frontend dma_t */
+	/* This points to the frontend */
 	dmabackend = &dma;
 	
 	dmapos = 0;
@@ -179,10 +211,9 @@ SNDDMA_Shutdown(void)
 }
 
 /* 
- * This sends the sound to the device,
+ * This sends the sound to the device.
- * if the DMA isn't the device itself.
+ * In the SDL backend it's useless and
- * This shouldn't be the case on all PCI
+ * only implemented for compatiblity.
- * and PCIe soundcards
  */
 void
 SNDDMA_Submit(void)