1 /*
2 snd_disk.c
3
4 write sound to a disk file
5
6 Copyright (C) 1999,2000 contributors of the QuakeForge project
7 Please see the file "AUTHORS" for a list of contributors
8
9 This program is free software; you can redistribute it and/or
10 modify it under the terms of the GNU General Public License
11 as published by the Free Software Foundation; either version 2
12 of the License, or (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
17
18 See the GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to:
22
23 Free Software Foundation, Inc.
24 59 Temple Place - Suite 330
25 Boston, MA 02111-1307, USA
26
27 */
28 #ifdef HAVE_CONFIG_H
29 # include "config.h"
30 #endif
31
32 #ifdef HAVE_UNISTD_H
33 # include <unistd.h>
34 #endif
35 #ifdef HAVE_STRING_H
36 # include <string.h>
37 #endif
38 #ifdef HAVE_STRINGS_H
39 # include <strings.h>
40 #endif
41
42 #include <fcntl.h>
43 #include <stdio.h>
44 #include <stdlib.h>
45 #include <sys/types.h>
46
47 #include "QF/cvar.h"
48 #include "QF/qargs.h"
49 #include "QF/sys.h"
50
51 #include "snd_internal.h"
52
53 static int snd_inited;
54 static QFile *snd_file;
55 static int snd_blocked = 0;
56 static volatile dma_t sn;
57
58 static plugin_t plugin_info;
59 static plugin_data_t plugin_info_data;
60 static plugin_funcs_t plugin_info_funcs;
61 static general_data_t plugin_info_general_data;
62 static general_funcs_t plugin_info_general_funcs;
63 static snd_output_data_t plugin_info_snd_output_data;
64 static snd_output_funcs_t plugin_info_snd_output_funcs;
65
66
67 static volatile dma_t *
SNDDMA_Init(void)68 SNDDMA_Init (void)
69 {
70 memset ((dma_t *) &sn, 0, sizeof (sn));
71 sn.channels = 2;
72 sn.submission_chunk = 1; // don't mix less than this #
73 sn.framepos = 0;
74 sn.samplebits = 16;
75 sn.frames = 16384;
76 sn.speed = 44100;
77 sn.buffer = malloc (sn.frames * sn.channels * sn.samplebits / 8);
78 if (!sn.buffer) {
79 Sys_Printf ("SNDDMA_Init: memory allocation failure\n");
80 return 0;
81 }
82
83 Sys_Printf ("%5d channels\n", sn.channels - 1);
84 Sys_Printf ("%5d samples\n", sn.frames);
85 Sys_Printf ("%5d samplepos\n", sn.framepos);
86 Sys_Printf ("%5d samplebits\n", sn.samplebits);
87 Sys_Printf ("%5d submission_chunk\n", sn.submission_chunk);
88 Sys_Printf ("%5d speed\n", sn.speed);
89 Sys_Printf ("0x%lx dma buffer\n", (long) sn.buffer);
90
91 if (!(snd_file = Qopen ("qf.raw", "wb")))
92 return 0;
93
94 snd_inited = 1;
95 return &sn;
96 }
97
98 static void
SNDDMA_Init_Cvars(void)99 SNDDMA_Init_Cvars (void)
100 {
101 }
102
103 static int
SNDDMA_GetDMAPos(void)104 SNDDMA_GetDMAPos (void)
105 {
106 sn.framepos = 0;
107 return sn.framepos;
108 }
109
110 static void
SNDDMA_Shutdown(void)111 SNDDMA_Shutdown (void)
112 {
113 if (snd_inited) {
114 Qclose (snd_file);
115 snd_file = 0;
116 free (sn.buffer);
117 snd_inited = 0;
118 }
119 }
120
121 /*
122 SNDDMA_Submit
123
124 Send sound to device if buffer isn't really the dma buffer
125 */
126 static void
SNDDMA_Submit(void)127 SNDDMA_Submit (void)
128 {
129 int count = ((*plugin_info_snd_output_data.paintedtime -
130 *plugin_info_snd_output_data.soundtime) *
131 sn.samplebits / 8);
132
133 if (snd_blocked)
134 return;
135
136 Qwrite (snd_file, sn.buffer, count);
137 }
138
139 static void
SNDDMA_BlockSound(void)140 SNDDMA_BlockSound (void)
141 {
142 ++snd_blocked;
143 }
144
145 static void
SNDDMA_UnblockSound(void)146 SNDDMA_UnblockSound (void)
147 {
148 if (!snd_blocked)
149 return;
150 --snd_blocked;
151 }
152
PLUGIN_INFO(snd_output,disk)153 PLUGIN_INFO(snd_output, disk)
154 {
155 plugin_info.type = qfp_snd_output;
156 plugin_info.api_version = QFPLUGIN_VERSION;
157 plugin_info.plugin_version = "0.1";
158 plugin_info.description = "disk output";
159 plugin_info.copyright = "Copyright (C) 1996-1997 id Software, Inc.\n"
160 "Copyright (C) 1999,2000,2001 contributors of the QuakeForge "
161 "project\n"
162 "Please see the file \"AUTHORS\" for a list of contributors";
163 plugin_info.functions = &plugin_info_funcs;
164 plugin_info.data = &plugin_info_data;
165
166 plugin_info_data.general = &plugin_info_general_data;
167 plugin_info_data.input = NULL;
168 plugin_info_data.snd_output = &plugin_info_snd_output_data;
169
170 plugin_info_funcs.general = &plugin_info_general_funcs;
171 plugin_info_funcs.input = NULL;
172 plugin_info_funcs.snd_output = &plugin_info_snd_output_funcs;
173
174 plugin_info_general_funcs.p_Init = SNDDMA_Init_Cvars;
175 plugin_info_general_funcs.p_Shutdown = NULL;
176 plugin_info_snd_output_funcs.pS_O_Init = SNDDMA_Init;
177 plugin_info_snd_output_funcs.pS_O_Shutdown = SNDDMA_Shutdown;
178 plugin_info_snd_output_funcs.pS_O_GetDMAPos = SNDDMA_GetDMAPos;
179 plugin_info_snd_output_funcs.pS_O_Submit = SNDDMA_Submit;
180 plugin_info_snd_output_funcs.pS_O_BlockSound = SNDDMA_BlockSound;
181 plugin_info_snd_output_funcs.pS_O_UnblockSound = SNDDMA_UnblockSound;
182
183 return &plugin_info;
184 }
185