Mercurial > sdl-ios-xcode

annotate src/audio/mint/SDL_mintaudio_xbios.c @ 3950:9d9e15ab1697 SDL-1.2

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Check if yasm supports a nasm-specific syntax we use (it doesn't in 0.5.0, which is still common in Linux distros, and does in 0.6.0). Disable it if we don't, attempting to fallback to using nasm. Thanks to Mike Frysinger for the patch. Fixes Bugzilla #393.
author Ryan C. Gordon <icculus@icculus.org>
date Mon, 04 Jun 2007 11:06:48 +0000
parents e958a003b69b
children a1b03ba2fcd0
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 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 (Falcon)
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27
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28 Patrice Mandin, Didier Méquignon
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29 */
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30
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31 #include <unistd.h>
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32 #include <support.h>
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33
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34 /* Mint includes */
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35 #include <mint/osbind.h>
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36 #include <mint/falcon.h>
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37 #include <mint/cookie.h>
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38
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39 #include "SDL_audio.h"
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40 #include "../SDL_audio_c.h"
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41 #include "../SDL_sysaudio.h"
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42
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43 #include "../../video/ataricommon/SDL_atarimxalloc_c.h"
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44
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45 #include "SDL_mintaudio.h"
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46 #include "SDL_mintaudio_dma8.h"
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47
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48 /*--- Defines ---*/
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49
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50 #define MINT_AUDIO_DRIVER_NAME "mint_xbios"
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51
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52 /* Debug print info */
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53 #define DEBUG_NAME "audio:xbios: "
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54 #if 0
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55 #define DEBUG_PRINT(what) \
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56 { \
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57 printf what; \
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58 }
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59 #else
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60 #define DEBUG_PRINT(what)
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61 #endif
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62
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63 /*--- Static variables ---*/
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64
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65 static unsigned long cookie_snd;
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66
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67 /*--- Audio driver functions ---*/
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68
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69 static void Mint_CloseAudio(_THIS);
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70 static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec);
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71 static void Mint_LockAudio(_THIS);
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72 static void Mint_UnlockAudio(_THIS);
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73
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74 /* To check/init hardware audio */
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75 static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec);
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76 static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec);
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77
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78 /*--- Audio driver bootstrap functions ---*/
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79
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80 static int Audio_Available(void)
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81 {
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82 unsigned long dummy;
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83 const char *envr = SDL_getenv("SDL_AUDIODRIVER");
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84
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85 /*SDL_MintAudio_mint_present = (Getcookie(C_MiNT, &dummy) == C_FOUND);*/
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86 SDL_MintAudio_mint_present = SDL_FALSE;
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87
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88 /* We can't use XBIOS in interrupt with Magic, don't know about thread */
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89 if (Getcookie(C_MagX, &dummy) == C_FOUND) {
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90 return(0);
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91 }
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92
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93 /* Check if user asked a different audio driver */
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94 if ((envr) && (SDL_strcmp(envr, MINT_AUDIO_DRIVER_NAME)!=0)) {
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95 DEBUG_PRINT((DEBUG_NAME "user asked a different audio driver\n"));
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96 return(0);
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97 }
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98
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99 /* Cookie _SND present ? if not, assume ST machine */
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100 if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) {
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101 cookie_snd = SND_PSG;
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102 }
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103
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104 /* Check if we have 16 bits audio */
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105 if ((cookie_snd & SND_16BIT)==0) {
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106 DEBUG_PRINT((DEBUG_NAME "no 16 bits sound\n"));
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107 return(0);
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108 }
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109
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110 /* Check if audio is lockable */
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111 if (Locksnd()!=1) {
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112 DEBUG_PRINT((DEBUG_NAME "audio locked by other application\n"));
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113 return(0);
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114 }
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115
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116 Unlocksnd();
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117
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118 DEBUG_PRINT((DEBUG_NAME "XBIOS audio available!\n"));
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119 return(1);
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120 }
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121
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122 static void Audio_DeleteDevice(SDL_AudioDevice *device)
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123 {
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124 SDL_free(device->hidden);
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125 SDL_free(device);
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126 }
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127
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128 static SDL_AudioDevice *Audio_CreateDevice(int devindex)
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129 {
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130 SDL_AudioDevice *this;
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131
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132 /* Initialize all variables that we clean on shutdown */
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133 this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice));
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134 if ( this ) {
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135 SDL_memset(this, 0, (sizeof *this));
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136 this->hidden = (struct SDL_PrivateAudioData *)
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137 SDL_malloc((sizeof *this->hidden));
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138 }
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139 if ( (this == NULL) || (this->hidden == NULL) ) {
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140 SDL_OutOfMemory();
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141 if ( this ) {
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142 SDL_free(this);
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143 }
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144 return(0);
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145 }
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146 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
147
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
148 /* Set the function pointers */
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
149 this->OpenAudio = Mint_OpenAudio;
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parents:
diff changeset
150 this->CloseAudio = Mint_CloseAudio;
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parents:
diff changeset
151 this->LockAudio = Mint_LockAudio;
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parents:
diff changeset
152 this->UnlockAudio = Mint_UnlockAudio;
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parents:
diff changeset
153 this->free = Audio_DeleteDevice;
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
154
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parents:
diff changeset
155 return this;
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
156 }
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
157
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
158 AudioBootStrap MINTAUDIO_XBIOS_bootstrap = {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
159 MINT_AUDIO_DRIVER_NAME, "MiNT XBIOS audio driver",
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
160 Audio_Available, Audio_CreateDevice
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
161 };
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
162
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
163 static void Mint_LockAudio(_THIS)
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
164 {
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
165 /* Stop replay */
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
166 Buffoper(0);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
167 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
168
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
169 static void Mint_UnlockAudio(_THIS)
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
170 {
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
171 /* Restart replay */
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
172 Buffoper(SB_PLA_ENA|SB_PLA_RPT);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
173 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
174
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
175 static void Mint_CloseAudio(_THIS)
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
176 {
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
177 /* Stop replay */
1111
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
178 SDL_MintAudio_WaitThread();
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
179 Buffoper(0);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
180
1111
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
181 if (!SDL_MintAudio_mint_present) {
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
182 /* Uninstall interrupt */
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
183 Jdisint(MFP_DMASOUND);
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
184 }
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
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 */
594422ab8f9f Atari MiNT: added more audio drivers
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 */
594422ab8f9f Atari MiNT: added more audio drivers
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
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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
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
199
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
200 /* Falcon XBIOS implementation of Devconnect() is buggy with external clock */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
201 static void Devconnect2(int src, int dst, int sclk, int pre)
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
202 {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
203 static const unsigned short MASK1[3] = { 0, 0x6000, 0 };
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
204 static const unsigned short MASK2[4] = { 0xFFF0, 0xFF8F, 0xF0FF, 0x0FFF };
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
205 static const unsigned short INDEX1[4] = { 1, 3, 5, 7 };
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
206 static const unsigned short INDEX2[4] = { 0, 2, 4, 6 };
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
207 unsigned short sync_div,dev_ctrl,dest_ctrl;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
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diff changeset
208 void *oldstack;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
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diff changeset
209
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
210 if (dst==0) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
211 return;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
212 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
213
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
214 oldstack=(void *)Super(0);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
215
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
216 dev_ctrl = DMAAUDIO_IO.dev_ctrl;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
217 dest_ctrl = DMAAUDIO_IO.dest_ctrl;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
218 dev_ctrl &= MASK2[src];
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
219
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
220 if (src==ADC) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
221 dev_ctrl |= MASK1[sclk];
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
222 } else {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
223 dev_ctrl |= (INDEX1[sclk] << (src<<4));
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
224 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
225
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
226 if (dst & DMAREC) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
227 dest_ctrl &= 0xFFF0;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
228 dest_ctrl |= INDEX1[src];
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
229 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
230
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
231 if (dst & DSPRECV) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
232 dest_ctrl &= 0xFF8F;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
233 dest_ctrl |= (INDEX1[src]<<4);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
234 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
235
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
236 if (dst & EXTOUT) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
237 dest_ctrl &= 0xF0FF;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
238 dest_ctrl |= (INDEX1[src]<<8);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
239 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
240
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
241 if (dst & DAC) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
242 dev_ctrl &= 0x0FFF;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
243 dev_ctrl |= MASK1[sclk];
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
244 dest_ctrl &= 0x0FFF;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
245 dest_ctrl |= (INDEX2[src]<<12);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
246 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
247
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
248 sync_div = DMAAUDIO_IO.sync_div;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
249 if (sclk==CLKEXT) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
250 pre<<=8;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
251 sync_div &= 0xF0FF;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
252 } else {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
253 sync_div &= 0xFFF0;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
254 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
255 sync_div |= pre;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
256
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
257 DMAAUDIO_IO.dev_ctrl = dev_ctrl;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
258 DMAAUDIO_IO.dest_ctrl = dest_ctrl;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
259 DMAAUDIO_IO.sync_div = sync_div;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
260
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
261 Super(oldstack);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
262 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
263
1107
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1106
diff changeset
264 static void Mint_CheckExternalClock(_THIS)
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
265 {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
266 #define SIZE_BUF_CLOCK_MEASURE (44100/10)
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
267
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
268 unsigned long cookie_snd;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
269 char *buffer;
1107
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1106
diff changeset
270 int i, j;
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
271
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
272 /* DSP present with its GPIO port ? */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
273 if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) {
1107
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1106
diff changeset
274 return;
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
275 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
276 if ((cookie_snd & SND_DSP)==0) {
1107
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1106
diff changeset
277 return;
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
278 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
279
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
280 buffer = Atari_SysMalloc(SIZE_BUF_CLOCK_MEASURE, MX_STRAM);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
281 if (buffer==NULL) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
282 DEBUG_PRINT((DEBUG_NAME "Not enough memory for the measure\n"));
1107
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1106
diff changeset
283 return;
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
284 }
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1111
diff changeset
285 SDL_memset(buffer, 0, SIZE_BUF_CLOCK_MEASURE);
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
286
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
287 Buffoper(0);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
288 Settracks(0,0);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
289 Setmontracks(0);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
290 Setmode(MONO8);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
291 Jdisint(MFP_TIMERA);
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diff changeset
292
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
293 for (i=0; i<2; i++) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
294 Gpio(GPIO_SET,7); /* DSP port gpio outputs */
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parents: 769
diff changeset
295 Gpio(GPIO_WRITE,2+i); /* 22.5792/24.576 MHz for 44.1/48KHz */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
296 Devconnect2(DMAPLAY, DAC, CLKEXT, CLK50K); /* Matrix and clock source */
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parents: 769
diff changeset
297 Setbuffer(0, buffer, buffer + SIZE_BUF_CLOCK_MEASURE); /* Set buffer */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
298 Xbtimer(XB_TIMERA, 5, 38, SDL_MintAudio_XbiosInterruptMeasureClock); /* delay mode timer A, prediv /64, 1KHz */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
299 Jenabint(MFP_TIMERA);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
300 SDL_MintAudio_clocktics = 0;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
301 Buffoper(SB_PLA_ENA);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
302 usleep(110000);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
303
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
304 if((Buffoper(-1) & 1)==0) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
305 if (SDL_MintAudio_clocktics) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
306 unsigned long khz;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
307
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
308 khz = ((SIZE_BUF_CLOCK_MEASURE/SDL_MintAudio_clocktics) +1) & 0xFFFFFFFE;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
309 DEBUG_PRINT((DEBUG_NAME "measure %d: freq=%lu KHz\n", i+1, khz));
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diff changeset
310
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diff changeset
311 if(khz==44) {
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diff changeset
312 for (j=1; j<4; j++) {
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diff changeset
313 SDL_MintAudio_AddFrequency(this, MASTERCLOCK_44K/(MASTERPREDIV_FALCON*(1<<j)), MASTERCLOCK_44K, (1<<j)-1, 2+i);
961
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diff changeset
314 }
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diff changeset
315 } else if (khz==48) {
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
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diff changeset
316 for (j=1; j<4; j++) {
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
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diff changeset
317 SDL_MintAudio_AddFrequency(this, MASTERCLOCK_48K/(MASTERPREDIV_FALCON*(1<<j)), MASTERCLOCK_48K, (1<<j)-1, 2+i);
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
318 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
319 }
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diff changeset
320 } else {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
321 DEBUG_PRINT((DEBUG_NAME "No measure\n"));
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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322 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
323 } else {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
324 DEBUG_PRINT((DEBUG_NAME "No SDMA clock\n"));
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
325 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
326
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
327 Buffoper(0); /* stop */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
328 Jdisint(MFP_TIMERA); /* Uninstall interrupt */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
329 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
330
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
331 Mfree(buffer);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
332 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
333
644
594422ab8f9f Atari MiNT: added more audio drivers
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diff changeset
334 static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec)
594422ab8f9f Atari MiNT: added more audio drivers
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335 {
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diff changeset
336 int i;
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
337 Uint32 extclock;
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
338
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
339 DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ",spec->format & 0x00ff));
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
340 DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0)));
704
c4803992e09c Small bugfixes
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diff changeset
341 DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0)));
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
342 DEBUG_PRINT(("channels=%d, ", spec->channels));
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
343 DEBUG_PRINT(("freq=%d\n", spec->freq));
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
344
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
345 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
346 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
347 }
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
348
644
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parents:
diff changeset
349 spec->format |= 0x8000; /* Audio is always signed */
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parents:
diff changeset
350 if ((spec->format & 0x00ff)==16) {
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parents:
diff changeset
351 spec->format |= 0x1000; /* Audio is always big endian */
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
352 spec->channels=2; /* 16 bits always stereo */
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
353 }
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
354
1107
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
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parents: 1106
diff changeset
355 MINTAUDIO_freqcount=0;
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
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diff changeset
356
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
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diff changeset
357 /* Add external clocks if present */
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diff changeset
358 Mint_CheckExternalClock(this);
961
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diff changeset
359
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
360 /* Standard clocks */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
361 for (i=1;i<12;i++) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
362 /* Remove unusable Falcon codec predivisors */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
363 if ((i==6) || (i==8) || (i==10)) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
364 continue;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
365 }
1107
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1106
diff changeset
366 SDL_MintAudio_AddFrequency(this, MASTERCLOCK_FALCON1/(MASTERPREDIV_FALCON*(i+1)), MASTERCLOCK_FALCON1, i, -1);
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
367 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
368
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
369 #if 1
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
370 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
371 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
372 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
373 MINTAUDIO_frequencies[i].predivisor
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
374 ));
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
375 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
376 #endif
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
377
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
378 MINTAUDIO_numfreq=SDL_MintAudio_SearchFrequency(this, spec->freq);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
379 spec->freq=MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency;
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
380
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
381 DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ",spec->format & 0x00ff));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
382 DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0)));
704
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
383 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
384 DEBUG_PRINT(("channels=%d, ", spec->channels));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
385 DEBUG_PRINT(("freq=%d\n", spec->freq));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
386
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
387 return 0;
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 static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec)
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
391 {
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
392 int channels_mode, dmaclock, prediv;
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
393 void *buffer;
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 /* Stop currently playing sound */
1111
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
396 SDL_MintAudio_quit_thread = SDL_FALSE;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
397 SDL_MintAudio_thread_finished = SDL_TRUE;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
398 SDL_MintAudio_WaitThread();
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
399 Buffoper(0);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
400
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
401 /* Set replay tracks */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
402 Settracks(0,0);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
403 Setmontracks(0);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
404
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
405 /* Select replay format */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
406 channels_mode=STEREO16;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
407 switch (spec->format & 0xff) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
408 case 8:
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
409 if (spec->channels==2) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
410 channels_mode=STEREO8;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
411 } else {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
412 channels_mode=MONO8;
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
413 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
414 break;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
415 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
416 if (Setmode(channels_mode)<0) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
417 DEBUG_PRINT((DEBUG_NAME "Setmode() failed\n"));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
418 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
419
961
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diff changeset
420 dmaclock = MINTAUDIO_frequencies[MINTAUDIO_numfreq].masterclock;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
421 prediv = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor;
1107
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1106
diff changeset
422 if (MINTAUDIO_frequencies[MINTAUDIO_numfreq].gpio_bits != -1) {
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
423 Gpio(GPIO_SET,7); /* DSP port gpio outputs */
1107
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1106
diff changeset
424 Gpio(GPIO_WRITE, MINTAUDIO_frequencies[MINTAUDIO_numfreq].gpio_bits);
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1106
diff changeset
425 Devconnect2(DMAPLAY, DAC|EXTOUT, CLKEXT, prediv);
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
426 } else {
1100
76459577e620 Checking external clock on DSP port was leaving audio crossbar in limbo state
Patrice Mandin <patmandin@gmail.com>
parents: 1095
diff changeset
427 Devconnect2(DMAPLAY, DAC, CLK25M, prediv);
961
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428 }
644
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429
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430 /* Set buffer */
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431 buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
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432 if (Setbuffer(0, buffer, buffer + spec->size)<0) {
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433 DEBUG_PRINT((DEBUG_NAME "Setbuffer() failed\n"));
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434 }
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435
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12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
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436 if (SDL_MintAudio_mint_present) {
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437 SDL_MintAudio_thread_pid = tfork(SDL_MintAudio_Thread, 0);
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438 } else {
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439 /* Install interrupt */
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440 Jdisint(MFP_DMASOUND);
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441 /*Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_XbiosInterrupt);*/
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442 Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_Dma8Interrupt);
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443 Jenabint(MFP_DMASOUND);
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444
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445 if (Setinterrupt(SI_TIMERA, SI_PLAY)<0) {
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446 DEBUG_PRINT((DEBUG_NAME "Setinterrupt() failed\n"));
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447 }
644
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448 }
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449
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450 /* Go */
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451 Buffoper(SB_PLA_ENA|SB_PLA_RPT);
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452 DEBUG_PRINT((DEBUG_NAME "hardware initialized\n"));
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453 }
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454
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455 static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec)
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456 {
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457 /* Lock sound system */
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458 if (Locksnd()!=1) {
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459 SDL_SetError("Mint_OpenAudio: Audio system already in use");
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460 return(-1);
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461 }
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462
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463 SDL_MintAudio_device = this;
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464
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465 /* Check audio capabilities */
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466 if (Mint_CheckAudio(this, spec)==-1) {
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467 return -1;
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468 }
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469
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470 SDL_CalculateAudioSpec(spec);
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471
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472 /* Allocate memory for audio buffers in DMA-able RAM */
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473 DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", spec->size));
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474
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475 SDL_MintAudio_audiobuf[0] = Atari_SysMalloc(spec->size *2, MX_STRAM);
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476 if (SDL_MintAudio_audiobuf[0]==NULL) {
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477 SDL_SetError("MINT_OpenAudio: Not enough memory for audio buffer");
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478 return (-1);
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479 }
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480 SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + spec->size ;
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481 SDL_MintAudio_numbuf=0;
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482 SDL_memset(SDL_MintAudio_audiobuf[0], spec->silence, spec->size *2);
644
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483 SDL_MintAudio_audiosize = spec->size;
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484 SDL_MintAudio_mutex = 0;
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485
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486 DEBUG_PRINT((DEBUG_NAME "buffer 0 at 0x%08x\n", SDL_MintAudio_audiobuf[0]));
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487 DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1]));
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488
3865
e958a003b69b Add function to check FPU presence
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489 SDL_MintAudio_CheckFpu();
e958a003b69b Add function to check FPU presence
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490
644
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491 /* Setup audio hardware */
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492 Mint_InitAudio(this, spec);
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493
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494 return(1); /* We don't use SDL threaded audio */
644
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495 }