/* | |
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" | |
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) | |
{ | |
} |