185 lines
4.4 KiB
C
185 lines
4.4 KiB
C
/*
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snd_disk.c
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write sound to a disk file
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Copyright (C) 1999,2000 contributors of the QuakeForge project
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Please see the file "AUTHORS" for a list of contributors
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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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,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include "QF/cvar.h"
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#include "QF/qargs.h"
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#include "QF/sys.h"
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#include "snd_internal.h"
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static int snd_inited;
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static QFile *snd_file;
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static int snd_blocked = 0;
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static volatile dma_t sn;
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static plugin_t plugin_info;
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static plugin_data_t plugin_info_data;
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static plugin_funcs_t plugin_info_funcs;
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static general_data_t plugin_info_general_data;
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static general_funcs_t plugin_info_general_funcs;
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static snd_output_data_t plugin_info_snd_output_data;
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static snd_output_funcs_t plugin_info_snd_output_funcs;
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static volatile dma_t *
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SNDDMA_Init (void)
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{
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memset ((dma_t *) &sn, 0, sizeof (sn));
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sn.channels = 2;
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sn.submission_chunk = 1; // don't mix less than this #
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sn.framepos = 0;
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sn.samplebits = 16;
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sn.frames = 16384;
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sn.speed = 44100;
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sn.buffer = malloc (sn.frames * sn.channels * sn.samplebits / 8);
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if (!sn.buffer) {
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Sys_Printf ("SNDDMA_Init: memory allocation failure\n");
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return 0;
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}
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Sys_Printf ("%5d channels\n", sn.channels - 1);
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Sys_Printf ("%5d samples\n", sn.frames);
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Sys_Printf ("%5d samplepos\n", sn.framepos);
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Sys_Printf ("%5d samplebits\n", sn.samplebits);
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Sys_Printf ("%5d submission_chunk\n", sn.submission_chunk);
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Sys_Printf ("%5d speed\n", sn.speed);
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Sys_Printf ("0x%lx dma buffer\n", (long) sn.buffer);
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if (!(snd_file = Qopen ("qf.raw", "wb")))
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return 0;
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snd_inited = 1;
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return &sn;
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}
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static void
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SNDDMA_Init_Cvars (void)
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{
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}
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static int
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SNDDMA_GetDMAPos (void)
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{
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sn.framepos = 0;
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return sn.framepos;
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}
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static void
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SNDDMA_shutdown (void)
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{
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if (snd_inited) {
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Qclose (snd_file);
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snd_file = 0;
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free (sn.buffer);
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snd_inited = 0;
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}
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}
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/*
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SNDDMA_Submit
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Send sound to device if buffer isn't really the dma buffer
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*/
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static void
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SNDDMA_Submit (void)
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{
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int count = ((*plugin_info_snd_output_data.paintedtime -
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*plugin_info_snd_output_data.soundtime) *
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sn.samplebits / 8);
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if (snd_blocked)
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return;
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Qwrite (snd_file, sn.buffer, count);
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}
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static void
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SNDDMA_BlockSound (void)
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{
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++snd_blocked;
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}
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static void
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SNDDMA_UnblockSound (void)
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{
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if (!snd_blocked)
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return;
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--snd_blocked;
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}
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PLUGIN_INFO(snd_output, disk)
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{
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plugin_info.type = qfp_snd_output;
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plugin_info.api_version = QFPLUGIN_VERSION;
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plugin_info.plugin_version = "0.1";
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plugin_info.description = "disk output";
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plugin_info.copyright = "Copyright (C) 1996-1997 id Software, Inc.\n"
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"Copyright (C) 1999,2000,2001 contributors of the QuakeForge "
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"project\n"
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"Please see the file \"AUTHORS\" for a list of contributors";
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plugin_info.functions = &plugin_info_funcs;
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plugin_info.data = &plugin_info_data;
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plugin_info_data.general = &plugin_info_general_data;
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plugin_info_data.input = NULL;
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plugin_info_data.snd_output = &plugin_info_snd_output_data;
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plugin_info_funcs.general = &plugin_info_general_funcs;
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plugin_info_funcs.input = NULL;
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plugin_info_funcs.snd_output = &plugin_info_snd_output_funcs;
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plugin_info_general_funcs.p_Init = SNDDMA_Init_Cvars;
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plugin_info_general_funcs.p_Shutdown = NULL;
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plugin_info_snd_output_funcs.pS_O_Init = SNDDMA_Init;
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plugin_info_snd_output_funcs.pS_O_Shutdown = SNDDMA_shutdown;
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plugin_info_snd_output_funcs.pS_O_GetDMAPos = SNDDMA_GetDMAPos;
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plugin_info_snd_output_funcs.pS_O_Submit = SNDDMA_Submit;
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plugin_info_snd_output_funcs.pS_O_BlockSound = SNDDMA_BlockSound;
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plugin_info_snd_output_funcs.pS_O_UnblockSound = SNDDMA_UnblockSound;
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return &plugin_info;
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}
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