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annotate src/audio/mint/SDL_mintaudio_gsxb.c @ 4168:69bcba65c388 SDL-1.2

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Fixed bug #526 Comment #1 From Simon Howard 2009-03-20 16:50:56 Hi, I'm the author of Chocolate Doom, one of the other source ports that James mentioned. This is a patch against the current SVN version of SDL 1.2 that fixes the bug. It has been tested and hopefully should be obviously correct from examining the changes. I'll give a brief explanation. When the palette is set with SDL_SetPalette, the IDirectDrawPalette_SetEntries DirectX function is invoked. However, when this happens, a WM_PALETTECHANGED message is sent to the window. A WM_PALETTECHANGED message can also be received if the palette is changed for some other reason, like if the system palette is changed. Therefore, the palette change handler (DX5_PaletteChanged) has code to deal with this case. It distinguishes "expected" palette changes (set with SDL_SetPalette) from "unexpected" palette changes using the colorchange_expected variable, which is set before calling IDirectDrawPalette_SetEntries. However, the code to set this variable is missing in the fullscreen code path. By setting this variable, the palette change is handled properly and the freezes go away.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 13 Apr 2009 00:53:12 +0000
parents a1b03ba2fcd0
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /*
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25 MiNT audio driver
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26 using XBIOS functions (GSXB compatible driver)
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27
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28 Patrice Mandin
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29 */
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30
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31 /* Mint includes */
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32 #include <mint/osbind.h>
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33 #include <mint/falcon.h>
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34 #include <mint/cookie.h>
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35
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36 #include "SDL_audio.h"
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37 #include "../SDL_audio_c.h"
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38 #include "../SDL_sysaudio.h"
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39
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40 #include "../../video/ataricommon/SDL_atarimxalloc_c.h"
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41
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42 #include "SDL_mintaudio.h"
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43 #include "SDL_mintaudio_gsxb.h"
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44
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45 /*--- Defines ---*/
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46
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47 #define MINT_AUDIO_DRIVER_NAME "mint_gsxb"
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48
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49 /* Debug print info */
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50 #define DEBUG_NAME "audio:gsxb: "
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51 #if 0
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52 #define DEBUG_PRINT(what) \
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53 { \
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54 printf what; \
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55 }
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56 #else
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57 #define DEBUG_PRINT(what)
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58 #endif
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59
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60 /*--- Static variables ---*/
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61
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62 static unsigned long cookie_snd, cookie_gsxb;
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63
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64 /*--- Audio driver functions ---*/
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65
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66 static void Mint_CloseAudio(_THIS);
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67 static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec);
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68 static void Mint_LockAudio(_THIS);
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69 static void Mint_UnlockAudio(_THIS);
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70
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71 /* To check/init hardware audio */
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72 static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec);
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73 static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec);
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74
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75 /* GSXB callbacks */
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76 static void Mint_GsxbInterrupt(void);
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77 static void Mint_GsxbNullInterrupt(void);
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78
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79 /*--- Audio driver bootstrap functions ---*/
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80
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81 static int Audio_Available(void)
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82 {
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83 const char *envr = SDL_getenv("SDL_AUDIODRIVER");
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84
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85 /* Check if user asked a different audio driver */
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86 if ((envr) && (SDL_strcmp(envr, MINT_AUDIO_DRIVER_NAME)!=0)) {
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87 DEBUG_PRINT((DEBUG_NAME "user asked a different audio driver\n"));
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88 return(0);
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89 }
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90
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91 /* Cookie _SND present ? if not, assume ST machine */
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92 if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) {
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93 cookie_snd = SND_PSG;
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94 }
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95
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96 /* Check if we have 16 bits audio */
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97 if ((cookie_snd & SND_16BIT)==0) {
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98 DEBUG_PRINT((DEBUG_NAME "no 16 bits sound\n"));
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99 return(0);
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100 }
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101
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102 /* Cookie GSXB present ? */
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103 cookie_gsxb = (Getcookie(C_GSXB, &cookie_gsxb) == C_FOUND);
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104
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105 /* Is it GSXB ? */
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106 if (((cookie_snd & SND_GSXB)==0) || (cookie_gsxb==0)) {
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107 DEBUG_PRINT((DEBUG_NAME "no GSXB audio\n"));
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108 return(0);
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109 }
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110
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111 /* Check if audio is lockable */
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112 if (Locksnd()!=1) {
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113 DEBUG_PRINT((DEBUG_NAME "audio locked by other application\n"));
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114 return(0);
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115 }
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116
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117 Unlocksnd();
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118
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119 DEBUG_PRINT((DEBUG_NAME "GSXB audio available!\n"));
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120 return(1);
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121 }
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122
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123 static void Audio_DeleteDevice(SDL_AudioDevice *device)
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124 {
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125 SDL_free(device->hidden);
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126 SDL_free(device);
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127 }
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128
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129 static SDL_AudioDevice *Audio_CreateDevice(int devindex)
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130 {
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131 SDL_AudioDevice *this;
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132
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133 /* Initialize all variables that we clean on shutdown */
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134 this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice));
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135 if ( this ) {
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136 SDL_memset(this, 0, (sizeof *this));
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137 this->hidden = (struct SDL_PrivateAudioData *)
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138 SDL_malloc((sizeof *this->hidden));
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139 }
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140 if ( (this == NULL) || (this->hidden == NULL) ) {
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141 SDL_OutOfMemory();
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142 if ( this ) {
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143 SDL_free(this);
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144 }
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parents:
diff changeset
145 return(0);
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Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
146 }
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1107
diff changeset
147 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
644
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parents:
diff changeset
148
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parents:
diff changeset
149 /* Set the function pointers */
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parents:
diff changeset
150 this->OpenAudio = Mint_OpenAudio;
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parents:
diff changeset
151 this->CloseAudio = Mint_CloseAudio;
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parents:
diff changeset
152 this->LockAudio = Mint_LockAudio;
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parents:
diff changeset
153 this->UnlockAudio = Mint_UnlockAudio;
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parents:
diff changeset
154 this->free = Audio_DeleteDevice;
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parents:
diff changeset
155
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parents:
diff changeset
156 return this;
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parents:
diff changeset
157 }
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parents:
diff changeset
158
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Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
159 AudioBootStrap MINTAUDIO_GSXB_bootstrap = {
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parents:
diff changeset
160 MINT_AUDIO_DRIVER_NAME, "MiNT GSXB audio driver",
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parents:
diff changeset
161 Audio_Available, Audio_CreateDevice
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parents:
diff changeset
162 };
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parents:
diff changeset
163
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parents:
diff changeset
164 static void Mint_LockAudio(_THIS)
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parents:
diff changeset
165 {
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parents:
diff changeset
166 /* Stop replay */
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parents:
diff changeset
167 Buffoper(0);
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Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
168 }
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Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
169
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parents:
diff changeset
170 static void Mint_UnlockAudio(_THIS)
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Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
171 {
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parents:
diff changeset
172 /* Restart replay */
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Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
173 Buffoper(SB_PLA_ENA|SB_PLA_RPT);
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Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
174 }
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Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
175
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
176 static void Mint_CloseAudio(_THIS)
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Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
177 {
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parents:
diff changeset
178 /* Stop replay */
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
179 Buffoper(0);
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parents:
diff changeset
180
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parents:
diff changeset
181 /* Uninstall interrupt */
1097
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
182 if (NSetinterrupt(2, SI_NONE, Mint_GsxbNullInterrupt)<0) {
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
183 DEBUG_PRINT((DEBUG_NAME "NSetinterrupt() failed in close\n"));
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Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
184 }
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parents:
diff changeset
185
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
186 /* Wait if currently playing sound */
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Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
187 while (SDL_MintAudio_mutex != 0) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
188 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
189
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
190 /* Clear buffers */
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Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
191 if (SDL_MintAudio_audiobuf[0]) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
192 Mfree(SDL_MintAudio_audiobuf[0]);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
193 SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
194 }
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
195
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
196 /* Unlock sound system */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
197 Unlocksnd();
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
198 }
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
199
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
200 static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec)
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
201 {
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
202 long snd_format;
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
203 int i, resolution, format_signed, format_bigendian;
3852
5b5e549382b3 Removed some new 1.3 symbols from code backported to 1.2.
Ryan C. Gordon <icculus@icculus.org>
parents: 3851
diff changeset
204 Uint16 test_format = SDL_FirstAudioFormat(spec->format);
3851
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
205 int valid_datatype = 0;
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
206
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
207 resolution = spec->format & 0x00ff;
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
208 format_signed = ((spec->format & 0x8000)!=0);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
209 format_bigendian = ((spec->format & 0x1000)!=0);
704
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
210
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
211 DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ",spec->format & 0x00ff));
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
212 DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0)));
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
213 DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0)));
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
214 DEBUG_PRINT(("channels=%d, ", spec->channels));
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
215 DEBUG_PRINT(("freq=%d\n", spec->freq));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
216
3851
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
217 if (spec->channels > 2) {
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
218 spec->channels = 2; /* no more than stereo! */
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
219 }
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
220
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
221 while ((!valid_datatype) && (test_format)) {
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
222 /* Check formats available */
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
223 snd_format = Sndstatus(SND_QUERYFORMATS);
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
224 spec->format = test_format;
3852
5b5e549382b3 Removed some new 1.3 symbols from code backported to 1.2.
Ryan C. Gordon <icculus@icculus.org>
parents: 3851
diff changeset
225 resolution = spec->format & 0xff;
5b5e549382b3 Removed some new 1.3 symbols from code backported to 1.2.
Ryan C. Gordon <icculus@icculus.org>
parents: 3851
diff changeset
226 format_signed = (spec->format & (1<<15));
5b5e549382b3 Removed some new 1.3 symbols from code backported to 1.2.
Ryan C. Gordon <icculus@icculus.org>
parents: 3851
diff changeset
227 format_bigendian = (spec->format & (1<<12));
3851
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
228 switch (test_format) {
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
229 case AUDIO_U8:
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
230 case AUDIO_S8:
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
231 if (snd_format & SND_FORMAT8) {
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
232 valid_datatype = 1;
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
233 snd_format = Sndstatus(SND_QUERY8BIT);
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
234 }
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
235 break;
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
236
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
237 case AUDIO_U16LSB:
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
238 case AUDIO_S16LSB:
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
239 case AUDIO_U16MSB:
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
240 case AUDIO_S16MSB:
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
241 if (snd_format & SND_FORMAT16) {
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
242 valid_datatype = 1;
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
243 snd_format = Sndstatus(SND_QUERY16BIT);
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
244 }
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
245 break;
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
246
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
247 default:
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
248 test_format = SDL_NextAudioFormat();
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
249 break;
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
250 }
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
251 }
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
252
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
253 if (!valid_datatype) {
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
254 SDL_SetError("Unsupported audio format");
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
255 return (-1);
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
256 }
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
257
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
258 /* Check signed/unsigned format */
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
259 if (format_signed) {
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
260 if (snd_format & SND_FORMATSIGNED) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
261 /* Ok */
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
262 } else if (snd_format & SND_FORMATUNSIGNED) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
263 /* Give unsigned format */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
264 spec->format = spec->format & (~0x8000);
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
265 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
266 } else {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
267 if (snd_format & SND_FORMATUNSIGNED) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
268 /* Ok */
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
269 } else if (snd_format & SND_FORMATSIGNED) {
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
270 /* Give signed format */
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
271 spec->format |= 0x8000;
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
272 }
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
273 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
274
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
275 if (format_bigendian) {
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
276 if (snd_format & SND_FORMATBIGENDIAN) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
277 /* Ok */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
278 } else if (snd_format & SND_FORMATLITTLEENDIAN) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
279 /* Give little endian format */
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
280 spec->format = spec->format & (~0x1000);
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
281 }
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
282 } else {
704
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
283 if (snd_format & SND_FORMATLITTLEENDIAN) {
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
284 /* Ok */
704
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
285 } else if (snd_format & SND_FORMATBIGENDIAN) {
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
286 /* Give big endian format */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
287 spec->format |= 0x1000;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
288 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
289 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
290
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
291 /* Calculate and select the closest frequency */
961
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parents: 769
diff changeset
292 MINTAUDIO_freqcount=0;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
293 for (i=1;i<4;i++) {
1107
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1097
diff changeset
294 SDL_MintAudio_AddFrequency(this,
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1097
diff changeset
295 MASTERCLOCK_44K/(MASTERPREDIV_MILAN*(1<<i)), MASTERCLOCK_44K,
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1097
diff changeset
296 (1<<i)-1, -1);
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
297 }
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
298
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
299 #if 1
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
300 for (i=0; i<MINTAUDIO_freqcount; i++) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
301 DEBUG_PRINT((DEBUG_NAME "freq %d: %lu Hz, clock %lu, prediv %d\n",
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
302 i, MINTAUDIO_frequencies[i].frequency, MINTAUDIO_frequencies[i].masterclock,
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
303 MINTAUDIO_frequencies[i].predivisor
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
304 ));
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
305 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
306 #endif
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
307
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
308 MINTAUDIO_numfreq=SDL_MintAudio_SearchFrequency(this, spec->freq);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
309 spec->freq=MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency;
644
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parents:
diff changeset
310
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
311 DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ",spec->format & 0x00ff));
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
312 DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0)));
704
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
313 DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0)));
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
314 DEBUG_PRINT(("channels=%d, ", spec->channels));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
315 DEBUG_PRINT(("freq=%d\n", spec->freq));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
316
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
317 return 0;
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
318 }
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parents:
diff changeset
319
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
320 static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec)
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
321 {
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
322 int channels_mode, prediv;
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
323 void *buffer;
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
324
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
325 /* Stop currently playing sound */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
326 Buffoper(0);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
327
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Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
328 /* Set replay tracks */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
329 Settracks(0,0);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
330 Setmontracks(0);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
331
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
332 /* Select replay format */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
333 switch (spec->format & 0xff) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
334 case 8:
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
335 if (spec->channels==2) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
336 channels_mode=STEREO8;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
337 } else {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
338 channels_mode=MONO8;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
339 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
340 break;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
341 case 16:
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
342 if (spec->channels==2) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
343 channels_mode=STEREO16;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
344 } else {
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
345 channels_mode=MONO16;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
346 }
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
347 break;
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
348 default:
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
349 channels_mode=STEREO16;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
350 break;
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
351 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
352 if (Setmode(channels_mode)<0) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
353 DEBUG_PRINT((DEBUG_NAME "Setmode() failed\n"));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
354 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
355
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
356 prediv = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
357 Devconnect(DMAPLAY, DAC, CLKEXT, prediv, 1);
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
358
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
359 /* Set buffer */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
360 buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
361 if (Setbuffer(0, buffer, buffer + spec->size)<0) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
362 DEBUG_PRINT((DEBUG_NAME "Setbuffer() failed\n"));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
363 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
364
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
365 /* Install interrupt */
1097
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
366 if (NSetinterrupt(2, SI_PLAY, Mint_GsxbInterrupt)<0) {
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
367 DEBUG_PRINT((DEBUG_NAME "NSetinterrupt() failed\n"));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
368 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
369
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
370 /* Go */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
371 Buffoper(SB_PLA_ENA|SB_PLA_RPT);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
372 DEBUG_PRINT((DEBUG_NAME "hardware initialized\n"));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
373 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
374
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
375 static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec)
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
376 {
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
377 /* Lock sound system */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
378 if (Locksnd()!=1) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
379 SDL_SetError("Mint_OpenAudio: Audio system already in use");
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
380 return(-1);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
381 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
382
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
383 SDL_MintAudio_device = this;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
384
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
385 /* Check audio capabilities */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
386 if (Mint_CheckAudio(this, spec)==-1) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
387 return -1;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
388 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
389
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
390 SDL_CalculateAudioSpec(spec);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
391
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
392 /* Allocate memory for audio buffers in DMA-able RAM */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
393 DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", spec->size));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
394
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
395 SDL_MintAudio_audiobuf[0] = Atari_SysMalloc(spec->size *2, MX_STRAM);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
396 if (SDL_MintAudio_audiobuf[0]==NULL) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
397 SDL_SetError("MINT_OpenAudio: Not enough memory for audio buffer");
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
398 return (-1);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
399 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
400 SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + spec->size ;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
401 SDL_MintAudio_numbuf=0;
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1107
diff changeset
402 SDL_memset(SDL_MintAudio_audiobuf[0], spec->silence, spec->size *2);
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
403 SDL_MintAudio_audiosize = spec->size;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
404 SDL_MintAudio_mutex = 0;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
405
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
406 DEBUG_PRINT((DEBUG_NAME "buffer 0 at 0x%08x\n", SDL_MintAudio_audiobuf[0]));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
407 DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1]));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
408
3865
e958a003b69b Add function to check FPU presence
Patrice Mandin <patmandin@gmail.com>
parents: 3852
diff changeset
409 SDL_MintAudio_CheckFpu();
e958a003b69b Add function to check FPU presence
Patrice Mandin <patmandin@gmail.com>
parents: 3852
diff changeset
410
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
411 /* Setup audio hardware */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
412 Mint_InitAudio(this, spec);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
413
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
414 return(1); /* We don't use threaded audio */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
415 }
1097
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
416
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
417 static void Mint_GsxbInterrupt(void)
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
418 {
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
419 Uint8 *newbuf;
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
420
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
421 if (SDL_MintAudio_mutex)
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
422 return;
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
423
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
424 SDL_MintAudio_mutex=1;
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
425
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
426 SDL_MintAudio_numbuf ^= 1;
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
427 SDL_MintAudio_Callback();
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
428 newbuf = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
429 Setbuffer(0, newbuf, newbuf + SDL_MintAudio_audiosize);
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
430
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
431 SDL_MintAudio_mutex=0;
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
432 }
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
433
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
434 static void Mint_GsxbNullInterrupt(void)
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
435 {
c83fa1c650dd Move GSXB callback to C source
Patrice Mandin <patmandin@gmail.com>
parents: 962
diff changeset
436 }