diff --git a/Makefile b/Makefile
index f72c17c173..3121f2c2b7 100644
--- a/Makefile
+++ b/Makefile
@@ -20,6 +20,10 @@ ifeq ($(BUILD_ROAR), 1)
OBJ += roar.o
LIBS += -lroar
endif
+ifeq ($(BUILD_AL), 1)
+ OBJ += openal.o
+ LIBS += -lopenal
+endif
ifeq ($(BUILD_OPENGL), 1)
OBJ += gl.o
diff --git a/config.h b/config.h
index 6d387309ba..93a86a7739 100644
--- a/config.h
+++ b/config.h
@@ -36,6 +36,7 @@
#define AUDIO_OSS 2
#define AUDIO_ALSA 3
#define AUDIO_ROAR 4
+#define AUDIO_AL 5
////////////////////////
// Chooses which video and audio subsystem to use. Remember to update config.mk if you change these.
diff --git a/config.mk b/config.mk
index 3cb7a0b40e..2a918017d7 100644
--- a/config.mk
+++ b/config.mk
@@ -6,6 +6,7 @@ BUILD_RSOUND = 1
BUILD_OSS = 0
BUILD_ALSA = 1
BUILD_ROAR = 0
+BUILD_AL = 0
PREFIX = /usr
diff --git a/openal.c b/openal.c
new file mode 100644
index 0000000000..e704747bbd
--- /dev/null
+++ b/openal.c
@@ -0,0 +1,232 @@
+/* SSNES - A Super Ninteno Entertainment System (SNES) Emulator frontend for libsnes.
+ * Copyright (C) 2010 - Hans-Kristian Arntzen
+ *
+ * Some code herein may be based on code found in BSNES.
+ *
+ * SSNES 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 Found-
+ * ation, either version 3 of the License, or (at your option) any later version.
+ *
+ * SSNES 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 SSNES.
+ * If not, see .
+ */
+
+
+#include "driver.h"
+#include
+#include
+#include
+#include
+
+#define BUFSIZE 128
+
+typedef struct al
+{
+ ALuint source;
+ ALuint *buffers;
+ ALuint *res_buf;
+ int res_ptr;
+ ALenum format;
+ int num_buffers;
+ int rate;
+ int queue;
+
+ uint8_t tmpbuf[BUFSIZE];
+ int tmpbuf_ptr;
+
+ ALCdevice *handle;
+ ALCcontext *ctx;
+
+ bool nonblock;
+
+} al_t;
+
+static void* __al_init(const char* device, int rate, int latency)
+{
+ (void)device;
+ al_t *al = calloc(1, sizeof(al_t));
+ if ( al == NULL )
+ return NULL;
+
+ al->handle = alcOpenDevice(NULL);
+ if (al->handle == NULL)
+ goto error;
+
+ al->ctx = alcCreateContext(al->handle, NULL);
+ if (al->ctx == NULL)
+ goto error;
+
+ alcMakeContextCurrent(al->ctx);
+
+ al->rate = rate;
+
+ al->num_buffers = (latency * rate * 2 * 2) / (1000 * BUFSIZE);
+ al->buffers = calloc(al->num_buffers, sizeof(ALuint));
+ al->res_buf = calloc(al->num_buffers, sizeof(ALuint));
+ if (al->buffers == NULL || al->res_buf == NULL)
+ goto error;
+
+ alGenSources(1, &al->source);
+ alGenBuffers(al->num_buffers, al->buffers);
+
+ memcpy(al->res_buf, al->buffers, al->num_buffers * sizeof(ALuint));
+ al->res_ptr = al->num_buffers;
+
+ return al;
+
+error:
+ if (al)
+ {
+ alcMakeContextCurrent(NULL);
+ if (al->ctx)
+ alcDestroyContext(al->ctx);
+ if (al->handle)
+ alcCloseDevice(al->handle);
+ if (al->buffers)
+ free(al->buffers);
+ if (al->res_buf)
+ free(al->res_buf);
+ free(al);
+ }
+ return NULL;
+}
+
+static bool al_unqueue_buffers(al_t *al)
+{
+ ALint val;
+
+ alGetSourcei(al->source, AL_BUFFERS_PROCESSED, &val);
+
+ if (val > 0)
+ {
+ alSourceUnqueueBuffers(al->source, val, &al->res_buf[al->res_ptr]);
+ al->res_ptr += val;
+ return true;
+ }
+
+ return false;
+}
+
+static bool al_get_buffer(al_t *al, ALuint *buffer)
+{
+ if (al->res_ptr == 0)
+ {
+#ifndef _WIN32
+ struct timespec tv = {
+ .tv_sec = 0,
+ .tv_nsec = 1000000
+ };
+#endif
+
+ for(;;)
+ {
+ if (al_unqueue_buffers(al))
+ break;
+
+ if (al->nonblock)
+ return false;
+
+#ifdef _WIN32
+ Sleep(1);
+#else
+ nanosleep(&tv, NULL);
+#endif
+ }
+ }
+
+ *buffer = al->res_buf[--al->res_ptr];
+ return true;
+}
+
+static size_t al_fill_internal_buf(al_t *al, const void* buf, size_t size)
+{
+ size_t read_size = (BUFSIZE - al->tmpbuf_ptr > size) ? size : (BUFSIZE - al->tmpbuf_ptr);
+ memcpy(al->tmpbuf + al->tmpbuf_ptr, buf, read_size);
+ al->tmpbuf_ptr += read_size;
+ return read_size;
+}
+
+static ssize_t __al_write(void* data, const void* buf, size_t size)
+{
+ al_t *al = data;
+
+ size_t written = 0;
+ while (written < size)
+ {
+ size_t rc = al_fill_internal_buf(al, (const char*)buf + written, size - written);
+ written += rc;
+
+ if (al->tmpbuf_ptr != BUFSIZE)
+ break;
+
+ ALuint buffer;
+ if (!al_get_buffer(al, &buffer))
+ return 0;
+
+ alBufferData(buffer, AL_FORMAT_STEREO16, al->tmpbuf, BUFSIZE, al->rate);
+ al->tmpbuf_ptr = 0;
+ alSourceQueueBuffers(al->source, 1, &buffer);
+ if (alGetError() != AL_NO_ERROR)
+ return -1;
+
+ ALint val;
+ alGetSourcei(al->source, AL_SOURCE_STATE, &val);
+ if (val != AL_PLAYING)
+ alSourcePlay(al->source);
+
+ if (alGetError() != AL_NO_ERROR)
+ return -1;
+ }
+
+ return size;
+}
+
+static bool __al_stop(void *data)
+{
+ (void)data;
+ return true;
+}
+
+static void __al_set_nonblock_state(void *data, bool state)
+{
+ al_t *al = data;
+ al->nonblock = state;
+}
+
+static bool __al_start(void *data)
+{
+ (void)data;
+ return true;
+}
+
+static void __al_free(void *data)
+{
+ al_t *al= data;
+ if (al)
+ {
+ alSourceStop(al->source);
+ alDeleteSources(1, &al->source);
+ if ( al->buffers )
+ {
+ alDeleteBuffers(al->num_buffers, al->buffers);
+ free(al->buffers);
+ free(al->res_buf);
+ }
+ }
+ free(al);
+}
+
+const audio_driver_t audio_openal = {
+ .init = __al_init,
+ .write = __al_write,
+ .stop = __al_stop,
+ .start = __al_start,
+ .set_nonblock_state = __al_set_nonblock_state,
+ .free = __al_free
+};
+
+
diff --git a/rsound.c b/rsound.c
index e37b62594b..181f0859c8 100644
--- a/rsound.c
+++ b/rsound.c
@@ -75,7 +75,7 @@ static ssize_t __rsd_write(void* data, const void* buf, size_t size)
{
rsd_t *rsd = data;
- if ( rsd_delay_ms(rsd->rd) > rsd->latency && rsd->nonblock )
+ if ( (rsd_delay_ms(rsd->rd) > rsd->latency || rsd_get_avail(rsd->rd) < size) && rsd->nonblock )
return 0;
if ( size == 0 )
diff --git a/ssnes.c b/ssnes.c
index a7d02ca3fa..5c8bb16135 100644
--- a/ssnes.c
+++ b/ssnes.c
@@ -39,6 +39,7 @@ extern const audio_driver_t audio_rsound;
extern const audio_driver_t audio_oss;
extern const audio_driver_t audio_alsa;
extern const audio_driver_t audio_roar;
+extern const audio_driver_t audio_openal;
extern const video_driver_t video_gl;
////////////////////////////////////////////////
@@ -57,6 +58,8 @@ static driver_t driver = {
.audio = &audio_alsa,
#elif AUDIO_DRIVER == AUDIO_ROAR
.audio = &audio_roar,
+#elif AUDIO_DRIVER == AUDIO_AL
+ .audio = &audio_openal,
#else
#error "Define a valid audio driver in config.h"
#endif