--- /dev/null
+/*
+Copyright (C) 1996-1997 Id Software, Inc.
+
+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.
+
+*/
+#include "quakedef.h"
+
+#include <sys/param.h>
+#include <sys/audioio.h>
+#ifndef SUNOS
+# include <sys/endian.h>
+#endif
+#include <sys/ioctl.h>
+
+#include <fcntl.h>
+#ifndef SUNOS
+# include <paths.h>
+#endif
+#include <unistd.h>
+
+#include "snd_main.h"
+
+
+static int audio_fd = -1;
+
+
+/*
+====================
+SndSys_Init
+
+Create "snd_renderbuffer" with the proper sound format if the call is successful
+May return a suggested format if the requested format isn't available
+====================
+*/
+qboolean SndSys_Init (const snd_format_t* requested, snd_format_t* suggested)
+{
+ unsigned int i;
+ const char *snddev;
+ audio_info_t info;
+
+ // Open the audio device
+#ifdef _PATH_SOUND
+ snddev = _PATH_SOUND;
+#elif defined(SUNOS)
+ snddev = "/dev/audio";
+#else
+ snddev = "/dev/sound";
+#endif
+ audio_fd = open (snddev, O_WRONLY | O_NDELAY | O_NONBLOCK);
+ if (audio_fd < 0)
+ {
+ Con_Printf("Can't open the sound device (%s)\n", snddev);
+ return false;
+ }
+
+ AUDIO_INITINFO (&info);
+#ifdef AUMODE_PLAY // NetBSD / OpenBSD
+ info.mode = AUMODE_PLAY;
+#endif
+ info.play.sample_rate = requested->speed;
+ info.play.channels = requested->channels;
+ info.play.precision = requested->width * 8;
+ if (requested->width == 1)
+#ifdef SUNOS
+ info.play.encoding = AUDIO_ENCODING_LINEAR8;
+#else
+ info.play.encoding = AUDIO_ENCODING_ULINEAR;
+#endif
+ else
+#ifdef SUNOS
+ info.play.encoding = AUDIO_ENCODING_LINEAR;
+#else
+ if (mem_bigendian)
+ info.play.encoding = AUDIO_ENCODING_SLINEAR_BE;
+ else
+ info.play.encoding = AUDIO_ENCODING_SLINEAR_LE;
+#endif
+
+ if (ioctl (audio_fd, AUDIO_SETINFO, &info) != 0)
+ {
+ Con_Printf("Can't set up the sound device (%s)\n", snddev);
+ return false;
+ }
+
+ // TODO: check the parameters with AUDIO_GETINFO
+ // TODO: check AUDIO_ENCODINGFLAG_EMULATED with AUDIO_GETENC
+
+ snd_renderbuffer = Snd_CreateRingBuffer(requested, 0, NULL);
+ return true;
+}
+
+
+/*
+====================
+SndSys_Shutdown
+
+Stop the sound card, delete "snd_renderbuffer" and free its other resources
+====================
+*/
+void SndSys_Shutdown (void)
+{
+ if (audio_fd >= 0)
+ {
+ close(audio_fd);
+ audio_fd = -1;
+ }
+
+ if (snd_renderbuffer != NULL)
+ {
+ Mem_Free(snd_renderbuffer->ring);
+ Mem_Free(snd_renderbuffer);
+ snd_renderbuffer = NULL;
+ }
+}
+
+
+/*
+====================
+SndSys_Submit
+
+Submit the contents of "snd_renderbuffer" to the sound card
+====================
+*/
+void SndSys_Submit (void)
+{
+ unsigned int startoffset, factor, limit, nbframes;
+ int written;
+
+ if (audio_fd < 0 ||
+ snd_renderbuffer->startframe == snd_renderbuffer->endframe)
+ return;
+
+ startoffset = snd_renderbuffer->startframe % snd_renderbuffer->maxframes;
+ factor = snd_renderbuffer->format.width * snd_renderbuffer->format.channels;
+ limit = snd_renderbuffer->maxframes - startoffset;
+ nbframes = snd_renderbuffer->endframe - snd_renderbuffer->startframe;
+ if (nbframes > limit)
+ {
+ written = write (audio_fd, &snd_renderbuffer->ring[startoffset * factor], limit * factor);
+ if (written < 0)
+ {
+ Con_Printf("SndSys_Submit: audio write returned %d!\n", written);
+ return;
+ }
+
+ if (written % factor != 0)
+ Sys_Error("SndSys_Submit: nb of bytes written (%d) isn't aligned to a frame sample!\n", written);
+
+ snd_renderbuffer->startframe += written / factor;
+
+ if ((unsigned int)written < limit * factor)
+ {
+ Con_Printf("SndSys_Submit: audio can't keep up! (%u < %u)\n", written, limit * factor);
+ return;
+ }
+
+ nbframes -= limit;
+ startoffset = 0;
+ }
+
+ written = write (audio_fd, &snd_renderbuffer->ring[startoffset * factor], nbframes * factor);
+ if (written < 0)
+ {
+ Con_Printf("SndSys_Submit: audio write returned %d!\n", written);
+ return;
+ }
+ snd_renderbuffer->startframe += written / factor;
+}
+
+
+/*
+====================
+SndSys_GetSoundTime
+
+Returns the number of sample frames consumed since the sound started
+====================
+*/
+unsigned int SndSys_GetSoundTime (void)
+{
+ audio_info_t info;
+
+ if (ioctl (audio_fd, AUDIO_GETINFO, &info) < 0)
+ {
+ Con_Print("Error: can't get audio info\n");
+ SndSys_Shutdown ();
+ return 0;
+ }
+
+ return info.play.samples;
+}
+
+
+/*
+====================
+SndSys_LockRenderBuffer
+
+Get the exclusive lock on "snd_renderbuffer"
+====================
+*/
+qboolean SndSys_LockRenderBuffer (void)
+{
+ // Nothing to do
+ return true;
+}
+
+
+/*
+====================
+SndSys_UnlockRenderBuffer
+
+Release the exclusive lock on "snd_renderbuffer"
+====================
+*/
+void SndSys_UnlockRenderBuffer (void)
+{
+ // Nothing to do
+}
+
+/*
+====================
+SndSys_SendKeyEvents
+
+Send keyboard events originating from the sound system (e.g. MIDI)
+====================
+*/
+void SndSys_SendKeyEvents(void)
+{
+ // not supported
+}
projects / voretournament / voretournament.git / blobdiff