quakeforge/libs/audio/targets/snd_disk.c

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/*
snd_disk.c
write sound to a disk file
Copyright (C) 1999,2000 contributors of the QuakeForge project
Please see the file "AUTHORS" for a list of contributors
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
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
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#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
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#include "QF/cvar.h"
#include "QF/qargs.h"
#include "QF/sys.h"
#include "snd_internal.h"
static int snd_inited;
static QFile *snd_file;
static int snd_blocked = 0;
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static volatile dma_t sn;
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static plugin_t plugin_info;
static plugin_data_t plugin_info_data;
static plugin_funcs_t plugin_info_funcs;
static general_data_t plugin_info_general_data;
static general_funcs_t plugin_info_general_funcs;
static snd_output_data_t plugin_info_snd_output_data;
static snd_output_funcs_t plugin_info_snd_output_funcs;
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static volatile dma_t *
SNDDMA_Init (void)
{
memset ((dma_t *) &sn, 0, sizeof (sn));
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sn.channels = 2;
sn.submission_chunk = 1; // don't mix less than this #
sn.framepos = 0;
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sn.samplebits = 16;
sn.frames = 16384;
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sn.speed = 44100;
sn.buffer = malloc (sn.frames * sn.channels * sn.samplebits / 8);
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if (!sn.buffer) {
Sys_Printf ("SNDDMA_Init: memory allocation failure\n");
return 0;
}
Sys_Printf ("%5d channels\n", sn.channels - 1);
Sys_Printf ("%5d samples\n", sn.frames);
Sys_Printf ("%5d samplepos\n", sn.framepos);
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Sys_Printf ("%5d samplebits\n", sn.samplebits);
Sys_Printf ("%5d submission_chunk\n", sn.submission_chunk);
Sys_Printf ("%5d speed\n", sn.speed);
Sys_Printf ("0x%lx dma buffer\n", (long) sn.buffer);
if (!(snd_file = Qopen ("qf.raw", "wb")))
return 0;
snd_inited = 1;
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return &sn;
}
static void
SNDDMA_Init_Cvars (void)
{
}
static int
SNDDMA_GetDMAPos (void)
{
sn.framepos = 0;
return sn.framepos;
}
static void
SNDDMA_Shutdown (void)
{
if (snd_inited) {
Qclose (snd_file);
snd_file = 0;
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free (sn.buffer);
snd_inited = 0;
}
}
/*
SNDDMA_Submit
Send sound to device if buffer isn't really the dma buffer
*/
static void
SNDDMA_Submit (void)
{
int count = ((*plugin_info_snd_output_data.paintedtime -
*plugin_info_snd_output_data.soundtime) *
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sn.samplebits / 8);
if (snd_blocked)
return;
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Qwrite (snd_file, sn.buffer, count);
}
static void
SNDDMA_BlockSound (void)
{
++snd_blocked;
}
static void
SNDDMA_UnblockSound (void)
{
if (!snd_blocked)
return;
--snd_blocked;
}
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PLUGIN_INFO(snd_output, disk)
{
plugin_info.type = qfp_snd_output;
plugin_info.api_version = QFPLUGIN_VERSION;
plugin_info.plugin_version = "0.1";
plugin_info.description = "disk output";
plugin_info.copyright = "Copyright (C) 1996-1997 id Software, Inc.\n"
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"Copyright (C) 1999,2000,2001 contributors of the QuakeForge "
"project\n"
"Please see the file \"AUTHORS\" for a list of contributors";
plugin_info.functions = &plugin_info_funcs;
plugin_info.data = &plugin_info_data;
plugin_info_data.general = &plugin_info_general_data;
plugin_info_data.input = NULL;
plugin_info_data.snd_output = &plugin_info_snd_output_data;
plugin_info_funcs.general = &plugin_info_general_funcs;
plugin_info_funcs.input = NULL;
plugin_info_funcs.snd_output = &plugin_info_snd_output_funcs;
plugin_info_general_funcs.p_Init = SNDDMA_Init_Cvars;
plugin_info_general_funcs.p_Shutdown = NULL;
plugin_info_snd_output_funcs.pS_O_Init = SNDDMA_Init;
plugin_info_snd_output_funcs.pS_O_Shutdown = SNDDMA_Shutdown;
plugin_info_snd_output_funcs.pS_O_GetDMAPos = SNDDMA_GetDMAPos;
plugin_info_snd_output_funcs.pS_O_Submit = SNDDMA_Submit;
plugin_info_snd_output_funcs.pS_O_BlockSound = SNDDMA_BlockSound;
plugin_info_snd_output_funcs.pS_O_UnblockSound = SNDDMA_UnblockSound;
return &plugin_info;
}