mirror of
https://git.code.sf.net/p/quake/nuq
synced 2024-11-28 14:52:34 +00:00
66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
/*
|
|
snd_next.c
|
|
|
|
@description@
|
|
|
|
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:
|
|
|
|
Free Software Foundation, Inc.
|
|
59 Temple Place - Suite 330
|
|
Boston, MA 02111-1307, USA
|
|
|
|
$Id$
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
|
|
extern int desired_speed;
|
|
extern int desired_bits;
|
|
|
|
qboolean SNDDMA_Init(void)
|
|
{
|
|
int size;
|
|
|
|
size = 16384 + sizeof(dma_t);
|
|
shm = malloc (size);
|
|
memset((void*)shm, 0, size);
|
|
|
|
shm->buffer = (char*)shm + sizeof(dma_t);
|
|
shm->channels = 2;
|
|
shm->speed = desired_speed;
|
|
shm->samplebits = desired_bits;
|
|
shm->samples = 16384 / (desired_bits / 8);
|
|
shm->submission_chunk = 1;
|
|
|
|
return true;
|
|
}
|
|
|
|
// return the current sample position (in mono samples read)
|
|
// inside the recirculating dma buffer
|
|
int SNDDMA_GetDMAPos(void)
|
|
{
|
|
shm->samplepos = (int)(realtime*shm->speed*shm->channels) & (shm->samples-1);
|
|
|
|
return shm->samplepos;
|
|
}
|
|
|
|
void SNDDMA_Shutdown(void)
|
|
{
|
|
}
|