Mercurial > sdl-ios-xcode

annotate src/audio/disk/SDL_diskaudio.c @ 1076:8d3b95ece376

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
[PATCH] SDL_GetVideoMode() do not find the best video mode The current GetVideoMode() function stops at the first mode which has any dimensions smaller than the one asked, and gives the previous in the list. If I ask 336x224 with this list: 768x480 768x240 640x400 640x200 384x480 384x240 320x400 320x200 SDL will give me 640x400, because 640x200 as height smaller than what I asked. However the best mode is the smaller which has both dimensions bigger than the one asked (384x240 in my example). This patch fixes this, plus it does not rely on a sorted video mode list.
author Patrice Mandin <patmandin@gmail.com>
date Sun, 12 Jun 2005 16:12:55 +0000
parents b8d311d90021
children c9b51268668f
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
769
b8d311d90021 Updated copyright information for 2004 (Happy New Year!)
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
3 Copyright (C) 1997-2004 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