0,0 → 1,55 |
/* |
Copyright (C) 1996-1997 Id Software, Inc. |
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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. |
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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. |
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*/ |
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#include "quakedef.h" |
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extern int desired_speed; |
extern int desired_bits; |
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qboolean SNDDMA_Init(void) |
{ |
int size; |
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size = 16384 + sizeof(dma_t); |
shm = malloc (size); |
memset((void*)shm, 0, size); |
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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; |
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return true; |
} |
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// 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); |
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return shm->samplepos; |
} |
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void SNDDMA_Shutdown(void) |
{ |
} |