+++ /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 / xonotic / darkplaces.git / blobdiff