Mercurial > sdl-ios-xcode
annotate src/audio/dmedia/SDL_irixaudio.c @ 1282:217f5d5a49e5
Date: Sat, 15 Jan 2005 02:01:51 +0000 (UTC)
From: jimrandomh
Subject: [SDL] Re: Modifier keys pressed during initialization stick
I wrote a simple test program which initializes SDL, prints the SDL
version number, then prints any keydown and keyup events with their
modifiers. (Source code below). Compilation was done using Visual
Studio 6, release mode.
My test sequence was:
Start a command prompt. Type the name of the test program.
shift down
enter down (program starts)
Wait for window to appear
enter up
shift up
spacebar down
spacebar up
Under Windows 98, the output was correct:
SDL 1.2.8
left shift down
shift-return down
shift-return up
left shift up
space down
space up
Under Windows 2000 and under Windows XP, the output was:
SDL 1.2.8
shift-space down
shift-space up
Since shift was not held at the time space was pressed, this is
incorrect. Similar results were observed with launching in different
ways (including double-clicking in Windows Explorer), so it does not
depend on the launching terminal.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 29 Jan 2006 07:57:13 +0000 |
| parents | 6e6248801043 |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 3 Copyright (C) 1997, 1998 Sam Lantinga | |
| 4 | |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
| 20 5635-34 Springhouse Dr. | |
| 21 Pleasanton, CA 94588 (USA) | |
|
252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
148
diff
changeset
|
22 slouken@libsdl.org |
| 0 | 23 */ |
| 24 | |
| 25 #ifdef SAVE_RCSID | |
| 26 static char rcsid = | |
| 27 "@(#) $Id$"; | |
| 28 #endif | |
| 29 | |
| 30 /* Allow access to a raw mixing buffer (For IRIX 6.5 and higher) */ | |
|
903
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
31 /* patch for IRIX 5 by Georg Schwarz 18/07/2004 */ |
| 0 | 32 |
| 33 #include <stdlib.h> | |
| 34 | |
| 35 #include "SDL_endian.h" | |
| 36 #include "SDL_timer.h" | |
| 37 #include "SDL_audio.h" | |
| 38 #include "SDL_audiomem.h" | |
| 39 #include "SDL_audio_c.h" | |
| 40 #include "SDL_irixaudio.h" | |
| 41 | |
| 42 | |
|
903
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
43 #ifndef AL_RESOURCE /* as a test whether we use the old IRIX audio libraries */ |
|
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
44 #define OLD_IRIX_AUDIO |
|
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
45 #define alClosePort(x) ALcloseport(x) |
|
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
46 #define alFreeConfig(x) ALfreeconfig(x) |
|
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
47 #define alGetFillable(x) ALgetfillable(x) |
|
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
48 #define alNewConfig() ALnewconfig() |
|
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
49 #define alOpenPort(x,y,z) ALopenport(x,y,z) |
|
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
50 #define alSetChannels(x,y) ALsetchannels(x,y) |
|
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
51 #define alSetQueueSize(x,y) ALsetqueuesize(x,y) |
|
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
52 #define alSetSampFmt(x,y) ALsetsampfmt(x,y) |
|
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
53 #define alSetWidth(x,y) ALsetwidth(x,y) |
|
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
54 #endif |
|
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
55 |
| 0 | 56 /* Audio driver functions */ |
| 57 static int AL_OpenAudio(_THIS, SDL_AudioSpec *spec); | |
| 58 static void AL_WaitAudio(_THIS); | |
| 59 static void AL_PlayAudio(_THIS); | |
| 60 static Uint8 *AL_GetAudioBuf(_THIS); | |
| 61 static void AL_CloseAudio(_THIS); | |
| 62 | |
| 63 /* Audio driver bootstrap functions */ | |
| 64 | |
| 65 static int Audio_Available(void) | |
| 66 { | |
| 67 return 1; | |
| 68 } | |
| 69 | |
| 70 static void Audio_DeleteDevice(SDL_AudioDevice *device) | |
| 71 { | |
| 72 free(device->hidden); | |
| 73 free(device); | |
| 74 } | |
| 75 | |
| 76 static SDL_AudioDevice *Audio_CreateDevice(int devindex) | |
| 77 { | |
| 78 SDL_AudioDevice *this; | |
| 79 | |
| 80 /* Initialize all variables that we clean on shutdown */ | |
| 81 this = (SDL_AudioDevice *)malloc(sizeof(SDL_AudioDevice)); | |
| 82 if ( this ) { | |
| 83 memset(this, 0, (sizeof *this)); | |
| 84 this->hidden = (struct SDL_PrivateAudioData *) | |
| 85 malloc((sizeof *this->hidden)); | |
| 86 } | |
| 87 if ( (this == NULL) || (this->hidden == NULL) ) { | |
| 88 SDL_OutOfMemory(); | |
| 89 if ( this ) { | |
| 90 free(this); | |
| 91 } | |
| 92 return(0); | |
| 93 } | |
| 94 memset(this->hidden, 0, (sizeof *this->hidden)); | |
| 95 | |
| 96 /* Set the function pointers */ | |
| 97 this->OpenAudio = AL_OpenAudio; | |
| 98 this->WaitAudio = AL_WaitAudio; | |
| 99 this->PlayAudio = AL_PlayAudio; | |
| 100 this->GetAudioBuf = AL_GetAudioBuf; | |
| 101 this->CloseAudio = AL_CloseAudio; | |
| 102 | |
| 103 this->free = Audio_DeleteDevice; | |
| 104 | |
| 105 return this; | |
| 106 } | |
| 107 | |
|
148
8758b8d42cd9
Audio subsystem no longer assumes sun audio API on UNIX systems
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
108 AudioBootStrap DMEDIA_bootstrap = { |
| 0 | 109 "AL", "IRIX DMedia audio", |
| 110 Audio_Available, Audio_CreateDevice | |
| 111 }; | |
| 112 | |
| 113 | |
| 114 void static AL_WaitAudio(_THIS) | |
| 115 { | |
| 116 Sint32 timeleft; | |
| 117 | |
| 118 timeleft = this->spec.samples - alGetFillable(audio_port); | |
| 119 if ( timeleft > 0 ) { | |
| 120 timeleft /= (this->spec.freq/1000); | |
| 121 SDL_Delay((Uint32)timeleft); | |
| 122 } | |
| 123 } | |
| 124 | |
| 125 static void AL_PlayAudio(_THIS) | |
| 126 { | |
| 127 /* Write the audio data out */ | |
| 128 if ( alWriteFrames(audio_port, mixbuf, this->spec.samples) < 0 ) { | |
| 129 /* Assume fatal error, for now */ | |
| 130 this->enabled = 0; | |
| 131 } | |
| 132 } | |
| 133 | |
| 134 static Uint8 *AL_GetAudioBuf(_THIS) | |
| 135 { | |
| 136 return(mixbuf); | |
| 137 } | |
| 138 | |
| 139 static void AL_CloseAudio(_THIS) | |
| 140 { | |
| 141 if ( mixbuf != NULL ) { | |
| 142 SDL_FreeAudioMem(mixbuf); | |
| 143 mixbuf = NULL; | |
| 144 } | |
| 145 if ( audio_port != NULL ) { | |
|
605
6399f4e90211
IRIX patches from Andrea Suatoni
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
146 alClosePort(audio_port); |
| 0 | 147 audio_port = NULL; |
| 148 } | |
| 149 } | |
| 150 | |
| 151 static int AL_OpenAudio(_THIS, SDL_AudioSpec *spec) | |
| 152 { | |
| 153 ALconfig audio_config; | |
|
903
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
154 #ifdef OLD_IRIX_AUDIO |
|
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
155 long audio_param[2]; |
|
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
156 #else |
| 0 | 157 ALpv audio_param; |
|
903
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
158 #endif |
| 0 | 159 int width; |
| 160 | |
| 161 /* Determine the audio parameters from the AudioSpec */ | |
| 162 switch ( spec->format & 0xFF ) { | |
| 163 | |
| 164 case 8: { /* Signed 8 bit audio data */ | |
| 165 spec->format = AUDIO_S8; | |
| 166 width = AL_SAMPLE_8; | |
| 167 } | |
| 168 break; | |
| 169 | |
| 170 case 16: { /* Signed 16 bit audio data */ | |
| 171 spec->format = AUDIO_S16MSB; | |
| 172 width = AL_SAMPLE_16; | |
| 173 } | |
| 174 break; | |
| 175 | |
| 176 default: { | |
| 177 SDL_SetError("Unsupported audio format"); | |
| 178 return(-1); | |
| 179 } | |
| 180 } | |
| 181 | |
| 182 /* Update the fragment size as size in bytes */ | |
| 183 SDL_CalculateAudioSpec(spec); | |
| 184 | |
| 185 /* Set output frequency */ | |
|
903
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
186 #ifdef OLD_IRIX_AUDIO |
|
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
187 audio_param[0] = AL_OUTPUT_RATE; |
|
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
188 audio_param[1] = spec->freq; |
|
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
189 if( ALsetparams(AL_DEFAULT_DEVICE, audio_param, 2) < 0 ) { |
|
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
190 #else |
| 0 | 191 audio_param.param = AL_RATE; |
| 192 audio_param.value.i = spec->freq; | |
| 193 if( alSetParams(AL_DEFAULT_OUTPUT, &audio_param, 1) < 0 ) { | |
|
903
6e6248801043
Date: Sun, 18 Jul 2004 16:46:44 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
605
diff
changeset
|
194 #endif |
| 0 | 195 SDL_SetError("alSetParams failed"); |
| 196 return(-1); | |
| 197 } | |
| 198 | |
| 199 /* Open the audio port with the requested frequency */ | |
| 200 audio_port = NULL; | |
| 201 audio_config = alNewConfig(); | |
| 202 if ( audio_config && | |
| 203 (alSetSampFmt(audio_config, AL_SAMPFMT_TWOSCOMP) >= 0) && | |
| 204 (alSetWidth(audio_config, width) >= 0) && | |
| 205 (alSetQueueSize(audio_config, spec->samples*2) >= 0) && | |
| 206 (alSetChannels(audio_config, spec->channels) >= 0) ) { | |
|
605
6399f4e90211
IRIX patches from Andrea Suatoni
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
207 audio_port = alOpenPort("SDL audio", "w", audio_config); |
| 0 | 208 } |
| 209 alFreeConfig(audio_config); | |
| 210 if( audio_port == NULL ) { | |
| 211 SDL_SetError("Unable to open audio port"); | |
| 212 return(-1); | |
| 213 } | |
| 214 | |
| 215 /* Allocate mixing buffer */ | |
| 216 mixbuf = (Uint8 *)SDL_AllocAudioMem(spec->size); | |
| 217 if ( mixbuf == NULL ) { | |
| 218 SDL_OutOfMemory(); | |
| 219 return(-1); | |
| 220 } | |
| 221 memset(mixbuf, spec->silence, spec->size); | |
| 222 | |
| 223 /* We're ready to rock and roll. :-) */ | |
| 224 return(0); | |
| 225 } |