Mercurial > sdl-ios-xcode

annotate src/audio/disk/SDL_diskaudio.c @ 302:8a86bdf34f0f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added Atari joystick support (thanks Patrice!)
author Sam Lantinga <slouken@libsdl.org>
date Thu, 07 Mar 2002 20:23:11 +0000
parents f6ffac90895c
children b8d311d90021
rev   line source
68
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1 /*
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
2 SDL - Simple DirectMedia Layer
297
f6ffac90895c Updated copyright information for 2002
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
68
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
4
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
5 This library is free software; you can redistribute it and/or
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
6 modify it under the terms of the GNU Library General Public
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
7 License as published by the Free Software Foundation; either
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
8 version 2 of the License, or (at your option) any later version.
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
9
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
10 This library is distributed in the hope that it will be useful,
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
13 Library General Public License for more details.
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
14
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
15 You should have received a copy of the GNU Library General Public
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
16 License along with this library; if not, write to the Free
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
18
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
19 Sam Lantinga
252
e8157fcb3114 Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents: 86
diff changeset
20 slouken@libsdl.org
68
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
21
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
22 This file hacked^H^H^H^H^H^Hwritten by Ryan C. Gordon
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
23 (icculus@linuxgames.com)
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
24 */
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
25
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
26 #ifdef SAVE_RCSID
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
27 static char rcsid =
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
28 "@(#) $Id$";
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
29 #endif
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
30
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
31 /* Output raw audio data to a file. */
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
32
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
33 #include <stdlib.h>
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
34 #include <stdio.h>
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
35 #include <string.h>
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
36 #include <errno.h>
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
37 #include <unistd.h>
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
38 #include <sys/stat.h>
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
39 #include <sys/types.h>
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
40 #include <sys/stat.h>
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
41 #include <fcntl.h>
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
42
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
43
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
44 #include "SDL_audio.h"
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
45 #include "SDL_error.h"
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
46 #include "SDL_audiomem.h"
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
47 #include "SDL_audio_c.h"
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
48 #include "SDL_timer.h"
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
49 #include "SDL_audiodev_c.h"
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
50 #include "SDL_diskaudio.h"
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
51
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
52 /* The tag name used by DISK audio */
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
53 #define DISKAUD_DRIVER_NAME "disk"
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
54
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
55 /* environment variables and defaults. */
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
56 #define DISKENVR_OUTFILE "SDL_DISKAUDIOFILE"
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
57 #define DISKDEFAULT_OUTFILE "sdlaudio.raw"
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
58 #define DISKENVR_WRITEDELAY "SDL_DISKAUDIODELAY"
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
59 #define DISKDEFAULT_WRITEDELAY 150
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
60
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
61 /* Audio driver functions */
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
62 static int DISKAUD_OpenAudio(_THIS, SDL_AudioSpec *spec);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
63 static void DISKAUD_WaitAudio(_THIS);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
64 static void DISKAUD_PlayAudio(_THIS);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
65 static Uint8 *DISKAUD_GetAudioBuf(_THIS);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
66 static void DISKAUD_CloseAudio(_THIS);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
67
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
68 static const char *DISKAUD_GetOutputFilename(void)
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
69 {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
70 const char *envr = getenv(DISKENVR_OUTFILE);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
71 return((envr != NULL) ? envr : DISKDEFAULT_OUTFILE);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
72 }
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
73
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
74 /* Audio driver bootstrap functions */
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
75 static int DISKAUD_Available(void)
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
76 {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
77 #if 0
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
78 int fd;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
79 int available;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
80 int exists = 0;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
81 struct stat statbuf;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
82 const char *fname = DISKAUD_GetOutputFilename();
86
13e4c612098d Dummy audio and video drivers are enabled (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
83 const char *envr = getenv("SDL_AUDIODRIVER");
68
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
84 available = 0;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
85
86
13e4c612098d Dummy audio and video drivers are enabled (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
86 if ((envr) && (strcmp(envr, DISKAUD_DRIVER_NAME) == 0)) {
13e4c612098d Dummy audio and video drivers are enabled (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
87 if (stat(fname, &statbuf) == 0)
13e4c612098d Dummy audio and video drivers are enabled (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
88 exists = 1;
68
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
89
86
13e4c612098d Dummy audio and video drivers are enabled (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
90 fd = open(fname, O_WRONLY | O_CREAT | O_APPEND, S_IRUSR | S_IWUSR);
13e4c612098d Dummy audio and video drivers are enabled (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
91 if ( fd != -1 ) {
13e4c612098d Dummy audio and video drivers are enabled (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
92 available = 1;
13e4c612098d Dummy audio and video drivers are enabled (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
93 close(fd);
13e4c612098d Dummy audio and video drivers are enabled (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
94 if (!exists) {
13e4c612098d Dummy audio and video drivers are enabled (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
95 unlink(fname);
13e4c612098d Dummy audio and video drivers are enabled (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
96 }
13e4c612098d Dummy audio and video drivers are enabled (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
97 }
68
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
98 }
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
99 return(available);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
100 #else
86
13e4c612098d Dummy audio and video drivers are enabled (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
101 const char *envr = getenv("SDL_AUDIODRIVER");
13e4c612098d Dummy audio and video drivers are enabled (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
102 if ((envr) && (strcmp(envr, DISKAUD_DRIVER_NAME) == 0)) {
13e4c612098d Dummy audio and video drivers are enabled (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
103 return(1);
13e4c612098d Dummy audio and video drivers are enabled (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
104 }
13e4c612098d Dummy audio and video drivers are enabled (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
105
13e4c612098d Dummy audio and video drivers are enabled (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
106 return(0);
68
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
107 #endif
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
108 }
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
109
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
110 static void DISKAUD_DeleteDevice(SDL_AudioDevice *device)
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
111 {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
112 free(device->hidden);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
113 free(device);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
114 }
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
115
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
116 static SDL_AudioDevice *DISKAUD_CreateDevice(int devindex)
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
117 {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
118 SDL_AudioDevice *this;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
119 const char *envr;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
120
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
121 /* Initialize all variables that we clean on shutdown */
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
122 this = (SDL_AudioDevice *)malloc(sizeof(SDL_AudioDevice));
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
123 if ( this ) {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
124 memset(this, 0, (sizeof *this));
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
125 this->hidden = (struct SDL_PrivateAudioData *)
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
126 malloc((sizeof *this->hidden));
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
127 }
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
128 if ( (this == NULL) || (this->hidden == NULL) ) {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
129 SDL_OutOfMemory();
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
130 if ( this ) {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
131 free(this);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
132 }
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
133 return(0);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
134 }
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
135 memset(this->hidden, 0, (sizeof *this->hidden));
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
136
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
137 envr = getenv(DISKENVR_WRITEDELAY);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
138 this->hidden->write_delay = (envr) ? atoi(envr) : DISKDEFAULT_WRITEDELAY;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
139
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
140 /* Set the function pointers */
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
141 this->OpenAudio = DISKAUD_OpenAudio;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
142 this->WaitAudio = DISKAUD_WaitAudio;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
143 this->PlayAudio = DISKAUD_PlayAudio;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
144 this->GetAudioBuf = DISKAUD_GetAudioBuf;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
145 this->CloseAudio = DISKAUD_CloseAudio;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
146
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
147 this->free = DISKAUD_DeleteDevice;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
148
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
149 return this;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
150 }
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
151
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
152 AudioBootStrap DISKAUD_bootstrap = {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
153 DISKAUD_DRIVER_NAME, "direct-to-disk audio",
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
154 DISKAUD_Available, DISKAUD_CreateDevice
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
155 };
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
156
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
157 /* This function waits until it is possible to write a full sound buffer */
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
158 static void DISKAUD_WaitAudio(_THIS)
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
159 {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
160 SDL_Delay(this->hidden->write_delay);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
161 }
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
162
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
163 static void DISKAUD_PlayAudio(_THIS)
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
164 {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
165 int written;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
166
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
167 /* Write the audio data, checking for EAGAIN on broken audio drivers */
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
168 do {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
169 written = write(this->hidden->audio_fd,
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
170 this->hidden->mixbuf,
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
171 this->hidden->mixlen);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
172 if ( (written < 0) && ((errno == 0) || (errno == EAGAIN)) ) {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
173 SDL_Delay(1); /* Let a little CPU time go by */
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
174 }
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
175 } while ( (written < 0) &&
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
176 ((errno == 0) || (errno == EAGAIN) || (errno == EINTR)) );
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
177
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
178 /* If we couldn't write, assume fatal error for now */
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
179 if ( written < 0 ) {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
180 this->enabled = 0;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
181 }
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
182 #ifdef DEBUG_AUDIO
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
183 fprintf(stderr, "Wrote %d bytes of audio data\n", written);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
184 #endif
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
185 }
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
186
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
187 static Uint8 *DISKAUD_GetAudioBuf(_THIS)
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
188 {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
189 return(this->hidden->mixbuf);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
190 }
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
191
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
192 static void DISKAUD_CloseAudio(_THIS)
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
193 {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
194 if ( this->hidden->mixbuf != NULL ) {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
195 SDL_FreeAudioMem(this->hidden->mixbuf);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
196 this->hidden->mixbuf = NULL;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
197 }
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
198 if ( this->hidden->audio_fd >= 0 ) {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
199 close(this->hidden->audio_fd);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
200 this->hidden->audio_fd = -1;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
201 }
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
202 }
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
203
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
204 static int DISKAUD_OpenAudio(_THIS, SDL_AudioSpec *spec)
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
205 {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
206 const char *fname = DISKAUD_GetOutputFilename();
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
207
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
208 /* Open the audio device */
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
209 this->hidden->audio_fd = open(fname, O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
210 if ( this->hidden->audio_fd < 0 ) {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
211 SDL_SetError("Couldn't open %s: %s", fname, strerror(errno));
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
212 return(-1);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
213 }
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
214
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
215 fprintf(stderr, "WARNING: You are using the SDL disk writer"
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
216 " audio driver!\n Writing to file [%s].\n", fname);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
217
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
218 /* Allocate mixing buffer */
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
219 this->hidden->mixlen = spec->size;
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
220 this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
221 if ( this->hidden->mixbuf == NULL ) {
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
222 return(-1);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
223 }
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
224 memset(this->hidden->mixbuf, spec->silence, spec->size);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
225
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
226 /* We're ready to rock and roll. :-) */
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
227 return(0);
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
228 }
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
229