From 7f0777545039606840b7bce89a6d2c29f310ead3 Mon Sep 17 00:00:00 2001
From: eukos <eukos@oldtimes-software.com>
Date: Tue, 1 Sep 2015 10:59:13 +0200
Subject: [PATCH] Tapping into OpenAL (WIP)

---
 tracker/tracker_linux.c | 36 ++++++++++++++++++++----------------
 1 file changed, 20 insertions(+), 16 deletions(-)

diff --git a/tracker/tracker_linux.c b/tracker/tracker_linux.c
index 841b837..73de561 100644
--- a/tracker/tracker_linux.c
+++ b/tracker/tracker_linux.c
@@ -22,23 +22,16 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #ifdef DUMB
 #include "globaldef.h"
 #include "dumb.h"
-#include <unistd.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <sys/shm.h>
-#include <sys/wait.h>
-#include <linux/soundcard.h>
-#include <stdio.h>
-#include <errno.h>
+#include <AL/al.h>
+#include <AL/alc.h>
 
 // eukara - added in tracker playback using DUMB - UNIX ONLY!
 char name[256];
 DUH *trackmod; 		// The music file ~eukara
 DUH_SIGRENDERER *sr; 	// The DUMB renderer
-int oss_device;	// output device (by default /dev/dsp for OSS)
+ALCdevice *oss_device;
+ALuint oss_source;
+ALuint oss_buffer;
 static qboolean	bTracker_Initialized = false;
 
 // Set up the renderer options
@@ -63,6 +56,14 @@ void Tracker_Play(byte track, qboolean looping)
 	if(bTracker_Initialized == false)
 		return;
 
+	alGenSources((ALuint)1, &oss_source);
+	alSourcef(oss_source, AL_PITCH, 1);
+	alSourcef(oss_source, AL_GAIN, 1);
+	alSource3f(oss_source, AL_POSITION, 0, 0, 0);
+	alSource3f(oss_source, AL_VELOCITY, 0, 0, 0);
+	alSourcei(oss_source, AL_LOOPING, AL_FALSE);
+	alGenBuffers((ALuint)1, &oss_buffer);
+
 	dumb_register_stdfiles(); // Initialize loading files
 	
 	// Attempt to load every format imaginable, TODO: better method?
@@ -200,8 +201,9 @@ void Tracker_Update(void)
 		}
 	}
 
-	// TODO: Write this into the engine's soundbuffer instead for speed!
-	write (oss_device, &tracker_buffer, 4096);
+	alBufferData(oss_buffer, AL_FORMAT_STEREO16, &tracker_buffer.s8, 4096, freq);
+	alSourceQueueBuffers(oss_source, 1, &oss_buffer); 
+	alSourcePlay(oss_source);
 }
 
 int Tracker_Init(void)
@@ -209,7 +211,9 @@ int Tracker_Init(void)
 	if (COM_CheckParm("-notracker"))
 		return -1;
 
-	if((oss_device = open ("/dev/dsp", O_RDWR)) == -1){ // /dev/dsp is the standard OSS output
+	oss_device = alcOpenDevice(NULL);
+	if (!oss_device)	
+	{	
 		perror("/dev/dsp");
 		return 0;				    // just get out if there's none
 	}
@@ -224,6 +228,6 @@ void Tracker_Shutdown(void)
 {
 	Tracker_Stop();				// First stop the track	
 	dumb_exit();				// Kill DUMB
-	close(oss_device);			// Close the device
+	alcCloseDevice(oss_device);
 }
 #endif