annotate src/audio/mint/SDL_mintaudio.c @ 453:a6fa62b1be09

Updated for embedded Visual C++ 4.0
author Sam Lantinga <slouken@libsdl.org>
date Tue, 20 Aug 2002 00:20:06 +0000
parents d219b0e02f5f
children 0ce5a68278fd
rev   line source
398
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1 /*
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2 * MiNT audio driver
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3 *
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4 * Patrice Mandin
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5 */
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6
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7 #include <stdlib.h>
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8 #include <stdio.h>
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9 #include <string.h>
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10
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11 /* Mint includes */
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12 #include <mint/osbind.h>
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13 #include <mint/falcon.h>
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14 #include <sys/cookie.h>
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15
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16 #include "SDL_endian.h"
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17 #include "SDL_audio.h"
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18 #include "SDL_audio_c.h"
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19 #include "SDL_audiomem.h"
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20 #include "SDL_sysaudio.h"
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21
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22 #include "SDL_mintaudio.h"
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23 #include "SDL_mintaudiodma.h"
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24 #include "SDL_mintaudiogsxb.h"
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25 #include "SDL_mintaudiointerrupt_s.h"
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26
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27 #include "SDL_atarimxalloc_c.h"
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28
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29 /*--- Defines ---*/
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30
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31 #define MINT_AUDIO_DRIVER_NAME "mint"
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32
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33 /* Master clocks for replay frequencies */
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34 #define MASTERCLOCK_STE 8010666 /* Not sure of this one */
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35 #define MASTERCLOCK_TT 16107953 /* Not sure of this one */
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36 #define MASTERCLOCK_FALCON1 25175000
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37 #define MASTERCLOCK_FALCON2 32000000 /* Only usable for DSP56K */
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38 #define MASTERCLOCK_FALCONEXT -1 /* Clock on DSP56K port, unknown */
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39 #define MASTERCLOCK_MILAN1 22579200 /* Standard clock for 44.1 Khz */
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40 #define MASTERCLOCK_MILAN2 24576000 /* Standard clock for 48 Khz */
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41
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42 /* Master clock predivisors */
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43 #define MASTERPREDIV_STE 160
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44 #define MASTERPREDIV_TT 320
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45 #define MASTERPREDIV_FALCON 256
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46 #define MASTERPREDIV_MILAN 256
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47
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48 /* Values>>16 in _MCH cookie */
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49 enum {
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50 MCH_ST=0,
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51 MCH_STE,
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52 MCH_TT,
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53 MCH_F30
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54 };
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55
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56 /* MFP 68901 interrupt sources */
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57 enum {
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58 MFP_PARALLEL=0,
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59 MFP_DCD,
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60 MFP_CTS,
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61 MFP_BITBLT,
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62 MFP_TIMERD,
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63 MFP_BAUDRATE=MFP_TIMERD,
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64 MFP_TIMERC,
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65 MFP_200HZ=MFP_TIMERC,
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66 MFP_ACIA,
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67 MFP_DISK,
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68 MFP_TIMERB,
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69 MFP_HBLANK=MFP_TIMERB,
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70 MFP_TERR,
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71 MFP_TBE,
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72 MFP_RERR,
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73 MFP_RBF,
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74 MFP_TIMERA,
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75 MFP_DMASOUND=MFP_TIMERA,
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76 MFP_RING,
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77 MFP_MONODETECT
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78 };
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79
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80 /* Xbtimer() timers */
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81 enum {
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82 XB_TIMERA=0,
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83 XB_TIMERB,
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84 XB_TIMERC,
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85 XB_TIMERD
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86 };
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87
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88 /*--- Static variables ---*/
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89
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90 static unsigned long cookie_snd, cookie_mch, cookie_gsxb;
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91 static Uint16 hardfreq[16];
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92 static Uint16 numfreq;
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93 static SDL_AudioDevice *SDL_MintAudio_device;
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94
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95 /*--- Audio driver functions ---*/
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96
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97 static void Mint_CloseAudio(_THIS);
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98 static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec);
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99 static void Mint_LockAudio(_THIS);
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100 static void Mint_UnlockAudio(_THIS);
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101
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102 /*--- Audio driver bootstrap functions ---*/
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103
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104 static int Audio_Available(void)
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105 {
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106 const char *envr = getenv("SDL_AUDIODRIVER");
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107
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108 /* Check if user asked a different audio driver */
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109 if ((envr) && (strcmp(envr, MINT_AUDIO_DRIVER_NAME)!=0)) {
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110 return 0;
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111 }
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112
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113 /* Cookie _SND present ? if not, assume ST machine */
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114 if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) {
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115 cookie_snd = SND_PSG;
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116 }
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117
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118 /* Cookie _MCH present ? if not, assume ST machine */
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119 if (Getcookie(C__MCH, &cookie_mch) == C_NOTFOUND) {
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120 cookie_mch = MCH_ST << 16;
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121 }
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122
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123 /* Cookie GSXB present ? */
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124 cookie_gsxb = (Getcookie(C_GSXB, &cookie_gsxb) == C_FOUND);
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125
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126 /* Check if we have xbios functions (Falcon, clones) */
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127 if ((cookie_snd & SND_16BIT)!=0) {
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128 /* Check if audio is lockable */
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129 if (Locksnd()==1) {
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130 Unlocksnd();
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131 } else {
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132 /* Already in use */
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133 return(0);
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134 }
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135
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136 return(1);
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137 }
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138
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139 /* Check if we have 8 bits DMA audio (STE, TT) */
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140 if ((cookie_snd & SND_8BIT)!=0) {
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141 return(1);
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142 }
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143
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
144 return(0);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
145 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
146
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
147 static void Audio_DeleteDevice(SDL_AudioDevice *device)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
148 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
149 free(device->hidden);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
150 free(device);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
151 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
152
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
153 static SDL_AudioDevice *Audio_CreateDevice(int devindex)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
154 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
155 SDL_AudioDevice *this;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
156
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
157 /* Initialize all variables that we clean on shutdown */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
158 this = (SDL_AudioDevice *)malloc(sizeof(SDL_AudioDevice));
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
159 if ( this ) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
160 memset(this, 0, (sizeof *this));
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
161 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
162 if ( this == NULL ) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
163 SDL_OutOfMemory();
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
164 if ( this ) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
165 free(this);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
166 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
167 return(0);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
168 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
169
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
170 /* Set the function pointers */
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Sam Lantinga <slouken@libsdl.org>
parents:
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171 this->OpenAudio = Mint_OpenAudio;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
172 this->CloseAudio = Mint_CloseAudio;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
173 this->LockAudio = Mint_LockAudio;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
174 this->UnlockAudio = Mint_UnlockAudio;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
175 this->free = Audio_DeleteDevice;
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Sam Lantinga <slouken@libsdl.org>
parents:
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176
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
177 return this;
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Sam Lantinga <slouken@libsdl.org>
parents:
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178 }
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Sam Lantinga <slouken@libsdl.org>
parents:
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179
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Sam Lantinga <slouken@libsdl.org>
parents:
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180 AudioBootStrap MINTAUDIO_bootstrap = {
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Sam Lantinga <slouken@libsdl.org>
parents:
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181 MINT_AUDIO_DRIVER_NAME, "MiNT audio driver",
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Sam Lantinga <slouken@libsdl.org>
parents:
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182 Audio_Available, Audio_CreateDevice
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Sam Lantinga <slouken@libsdl.org>
parents:
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183 };
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Sam Lantinga <slouken@libsdl.org>
parents:
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184
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
185 static void Mint_LockAudio(_THIS)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
186 {
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Sam Lantinga <slouken@libsdl.org>
parents:
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187 void *oldpile;
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Sam Lantinga <slouken@libsdl.org>
parents:
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188
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Sam Lantinga <slouken@libsdl.org>
parents:
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189 /* Stop replay */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
190 if ((cookie_snd & SND_16BIT)!=0) {
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Sam Lantinga <slouken@libsdl.org>
parents:
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191 Buffoper(0);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
192 } else if ((cookie_snd & SND_8BIT)!=0) {
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Sam Lantinga <slouken@libsdl.org>
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193 oldpile=(void *)Super(0);
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Sam Lantinga <slouken@libsdl.org>
parents:
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194 DMAAUDIO_IO.control=0;
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Sam Lantinga <slouken@libsdl.org>
parents:
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195 Super(oldpile);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
196 }
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Sam Lantinga <slouken@libsdl.org>
parents:
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197 }
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Sam Lantinga <slouken@libsdl.org>
parents:
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198
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
199 static void Mint_UnlockAudio(_THIS)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
200 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
201 void *oldpile;
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Sam Lantinga <slouken@libsdl.org>
parents:
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202
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
203 /* Restart replay */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
204 if ((cookie_snd & SND_16BIT)!=0) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
205 Buffoper(SB_PLA_ENA|SB_PLA_RPT);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
206 } else if ((cookie_snd & SND_8BIT)!=0) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
207 oldpile=(void *)Super(0);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
208 DMAAUDIO_IO.control=3;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
209 Super(oldpile);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
210 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
211 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
212
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
213 /* This is called from the interrupt routine */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
214 void SDL_MintAudio_Callback(void)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
215 {
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Sam Lantinga <slouken@libsdl.org>
parents:
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216 SDL_AudioDevice *audio;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
217 Uint8 *buffer;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
218
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Sam Lantinga <slouken@libsdl.org>
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219 audio = SDL_MintAudio_device;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
220 buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
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Sam Lantinga <slouken@libsdl.org>
parents:
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221
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
222 if ( ! audio->paused ) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
223 if ( audio->convert.needed ) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
224 audio->spec.callback(audio->spec.userdata,
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
225 (Uint8 *)audio->convert.buf,audio->convert.len);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
226 SDL_ConvertAudio(&audio->convert);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
227 memcpy(buffer, audio->convert.buf, audio->convert.len_cvt);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
228 } else {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
229 audio->spec.callback(audio->spec.userdata, buffer, audio->spec.size);
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Sam Lantinga <slouken@libsdl.org>
parents:
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230 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
231 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
232 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
233
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
234 static void Mint_StopAudio_Dma8(void)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
235 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
236 void *oldpile;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
237
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
238 oldpile=(void *)Super(0);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
239 DMAAUDIO_IO.control=0;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
240 Super(oldpile);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
241
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
242 Jdisint(MFP_DMASOUND);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
243 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
244
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
245 static void Mint_StopAudio_Xbios(void)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
246 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
247 Buffoper(0);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
248 Jdisint(MFP_DMASOUND);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
249 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
250
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
251 static void Mint_StopAudio_Gsxb(void)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
252 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
253 Buffoper(0);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
254 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
255
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
256 static void Mint_CloseAudio(_THIS)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
257 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
258 if (cookie_gsxb && ((cookie_snd & (SND_GSXB|SND_16BIT))==(SND_GSXB|SND_16BIT)) ) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
259 Mint_StopAudio_Gsxb();
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
260 } else if ((cookie_snd & SND_16BIT)!=0) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
261 Mint_StopAudio_Xbios();
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
262 } else if ((cookie_snd & SND_8BIT)!=0) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
263 Mint_StopAudio_Dma8();
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
264 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
265
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
266 /* Clear buffers */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
267 if (SDL_MintAudio_audiobuf[0]) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
268 Mfree(SDL_MintAudio_audiobuf[0]);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
269 SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
270 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
271
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
272 /* Unlock sound system */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
273 if ((cookie_snd & SND_16BIT)!=0) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
274 Unlocksnd();
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
275 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
276 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
277
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
278 static void Mint_CheckAudio_Dma8(SDL_AudioSpec *spec)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
279 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
280 int i;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
281
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
282 spec->format = AUDIO_S8;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
283
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
284 switch(cookie_mch>>16) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
285 case MCH_STE:
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
286 /* STE replay frequencies */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
287 for (i=0;i<4;i++) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
288 hardfreq[i]=MASTERCLOCK_STE/(MASTERPREDIV_STE*(i+1));
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
289 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
290
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
291 if (spec->freq>=(hardfreq[0]+hardfreq[1])>>1) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
292 numfreq=3; /* 50066 */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
293 } else if (spec->freq>=(hardfreq[1]+hardfreq[2])>>1) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
294 numfreq=2; /* 25033 */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
295 } else if (spec->freq>=(hardfreq[2]+hardfreq[3])>>1) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
296 numfreq=1; /* 12517 */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
297 } else {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
298 numfreq=0; /* 6258 */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
299 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
300
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
301 spec->freq=hardfreq[numfreq];
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
302 break;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
303 case MCH_TT:
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
304 /* TT replay frequencies */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
305 for (i=0;i<4;i++) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
306 hardfreq[i]=MASTERCLOCK_TT/(MASTERPREDIV_TT*(i+1));
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
307 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
308
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
309 if (spec->freq>=(hardfreq[0]+hardfreq[1])>>1) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
310 numfreq=3; /* 50337 */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
311 } else if (spec->freq>=(hardfreq[1]+hardfreq[2])>>1) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
312 numfreq=2; /* 25169 */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
313 } else if (spec->freq>=(hardfreq[2]+hardfreq[3])>>1) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
314 numfreq=1; /* 12584 */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
315 } else {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
316 numfreq=0; /* 6292 */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
317 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
318 spec->freq=hardfreq[numfreq];
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
319 break;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
320 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
321 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
322
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
323 static void Mint_CheckAudio_Xbios(SDL_AudioSpec *spec)
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
324 {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
325 int i;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
326
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
327 /* Check conversions needed */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
328 switch (spec->format & 0xff) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
329 case 8:
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
330 spec->format = AUDIO_S8;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
331 break;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
332 case 16:
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
333 spec->format = AUDIO_S16MSB;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
334 break;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
335 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
336
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
337 /* Check hardware channels */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
338 if ((spec->channels==1) && ((spec->format & 0xff)==16)) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
339 spec->channels=2;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
340 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
341
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
342 /* Falcon replay frequencies */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
343 for (i=0;i<16;i++) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
344 hardfreq[i]=MASTERCLOCK_FALCON1/(MASTERPREDIV_FALCON*(i+1));
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
345 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
346
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
347 /* The Falcon CODEC only support some frequencies */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
348 if (spec->freq>=(hardfreq[CLK50K]+hardfreq[CLK33K])>>1) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
349 numfreq=CLK50K; /* 49170 */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
350 } else if (spec->freq>=(hardfreq[CLK33K]+hardfreq[CLK25K])>>1) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
351 numfreq=CLK33K; /* 32780 */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
352 } else if (spec->freq>=(hardfreq[CLK25K]+hardfreq[CLK20K])>>1) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
353 numfreq=CLK25K; /* 24585 */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
354 } else if (spec->freq>=(hardfreq[CLK20K]+hardfreq[CLK16K])>>1) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
355 numfreq=CLK20K; /* 19668 */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
356 } else if (spec->freq>=(hardfreq[CLK16K]+hardfreq[CLK12K])>>1) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
357 numfreq=CLK16K; /* 16390 */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
358 } else if (spec->freq>=(hardfreq[CLK12K]+hardfreq[CLK10K])>>1) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
359 numfreq=CLK12K; /* 12292 */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
360 } else if (spec->freq>=(hardfreq[CLK10K]+hardfreq[CLK8K])>>1) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
361 numfreq=CLK10K; /* 9834 */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
362 } else {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
363 numfreq=CLK8K; /* 8195 */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
364 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
365
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
366 spec->freq=hardfreq[numfreq];
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
367 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
368
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
369 static int Mint_CheckAudio_Gsxb(SDL_AudioSpec *spec)
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
370 {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
371 long snd_format;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
372 int i, resolution, format_signed, format_bigendian;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
373
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
374 resolution = spec->format & 0x00ff;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
375 format_signed = ((spec->format & 0x8000)!=0);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
376 format_bigendian = ((spec->format & 0x1000)!=0);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
377
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
378 /* Check formats available */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
379 snd_format = Sndstatus(SND_QUERYFORMATS);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
380 switch (resolution) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
381 case 8:
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
382 if ((snd_format & SND_FORMAT8)==0) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
383 SDL_SetError("Mint_CheckAudio: 8 bits samples not supported");
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
384 return -1;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
385 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
386 snd_format = Sndstatus(SND_QUERY8BIT);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
387 break;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
388 case 16:
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
389 if ((snd_format & SND_FORMAT16)==0) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
390 SDL_SetError("Mint_CheckAudio: 16 bits samples not supported");
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
391 return -1;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
392 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
393 snd_format = Sndstatus(SND_QUERY16BIT);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
394 break;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
395 default:
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
396 SDL_SetError("Mint_CheckAudio: Unsupported sample resolution");
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
397 return -1;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
398 break;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
399 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
400
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
401 /* Check signed/unsigned format */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
402 if (format_signed) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
403 if (snd_format & SND_FORMATSIGNED) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
404 /* Ok */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
405 } else if (snd_format & SND_FORMATUNSIGNED) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
406 /* Give unsigned format */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
407 spec->format = spec->format & (~0x8000);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
408 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
409 } else {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
410 if (snd_format & SND_FORMATUNSIGNED) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
411 /* Ok */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
412 } else if (snd_format & SND_FORMATSIGNED) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
413 /* Give signed format */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
414 spec->format |= 0x8000;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
415 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
416 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
417
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
418 if (format_bigendian) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
419 if (snd_format & SND_FORMATBIGENDIAN) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
420 /* Ok */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
421 } else if (snd_format & SND_FORMATLITTLEENDIAN) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
422 /* Give little endian format */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
423 spec->format = spec->format & (~0x1000);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
424 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
425 } else {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
426 if (snd_format & SND_FORMATBIGENDIAN) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
427 /* Ok */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
428 } else if (snd_format & SND_FORMATLITTLEENDIAN) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
429 /* Give big endian format */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
430 spec->format |= 0x1000;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
431 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
432 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
433
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
434 /* Only xbios functions available = clone with PC board */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
435 for (i=0;i<8;i++) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
436 hardfreq[i]=MASTERCLOCK_MILAN1/(MASTERPREDIV_MILAN*(i+1));
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
437 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
438
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
439 if (spec->freq>=(hardfreq[CLK_44K]+hardfreq[CLK_22K])>>1) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
440 numfreq = CLK_44K; /* 44100 */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
441 } else if (spec->freq>=(hardfreq[CLK_22K]+hardfreq[CLK_11K])>>1) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
442 numfreq = CLK_22K; /* 22050 */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
443 } else {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
444 numfreq = CLK_11K; /* 11025 */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
445 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
446
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
447 spec->freq=hardfreq[numfreq];
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
448
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
449 return 0;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
450 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
451
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
452 static void Mint_InitAudio_Dma8(SDL_AudioSpec *spec)
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
453 {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
454 void *oldpile;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
455 unsigned long buffer;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
456 unsigned char mode;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
457
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
458 oldpile=(void *)Super(0);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
459
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
460 /* Stop currently playing sound */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
461 DMAAUDIO_IO.control=0;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
462
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
463 /* Set buffer */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
464 buffer = (unsigned long) SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
465 DMAAUDIO_IO.start_high = (buffer>>16) & 255;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
466 DMAAUDIO_IO.start_mid = (buffer>>8) & 255;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
467 DMAAUDIO_IO.start_low = buffer & 255;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
468
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
469 buffer += SDL_MintAudio_audiosize;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
470 DMAAUDIO_IO.end_high = (buffer>>16) & 255;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
471 DMAAUDIO_IO.end_mid = (buffer>>8) & 255;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
472 DMAAUDIO_IO.end_low = buffer & 255;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
473
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
474 mode = numfreq;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
475 if (spec->channels==1) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
476 mode |= 1<<7;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
477 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
478 DMAAUDIO_IO.mode = mode;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
479
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
480 /* Set interrupt */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
481 Jdisint(MFP_DMASOUND);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
482 Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_IntDma);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
483 Jenabint(MFP_DMASOUND);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
484
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
485 /* Go */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
486 DMAAUDIO_IO.control = 3; /* playback + repeat */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
487
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
488 Super(oldpile);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
489 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
490
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
491 static void Mint_InitAudio_Xbios(SDL_AudioSpec *spec)
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
492 {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
493 int channels_mode;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
494 void *buffer;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
495
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
496 /* Stop currently playing sound */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
497 Buffoper(0);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
498
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
499 Settracks(0,0);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
500 Setmontracks(0);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
501
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
502 switch (spec->format & 0xff) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
503 case 8:
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
504 if (spec->channels==2) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
505 channels_mode=STEREO8;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
506 } else {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
507 channels_mode=MONO8;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
508 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
509 break;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
510 case 16:
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
511 default:
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
512 channels_mode=STEREO16;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
513 break;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
514 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
515 Setmode(channels_mode);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
516
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
517 Devconnect(DMAPLAY, DAC, CLK25M, numfreq, 1);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
518
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
519 /* Set buffer */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
520 buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
521 Setbuffer(0, buffer, buffer+SDL_MintAudio_audiosize);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
522
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
523 /* Install interrupt */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
524 Setinterrupt(SI_TIMERA, SI_PLAY);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
525
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
526 Jdisint(MFP_DMASOUND);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
527 Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_IntXbios);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
528 Jenabint(MFP_DMASOUND);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
529
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
530 /* Go */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
531 Buffoper(SB_PLA_ENA|SB_PLA_RPT);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
532 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
533
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
534 static void Mint_InitAudio_Gsxb(SDL_AudioSpec *spec)
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
535 {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
536 int channels_mode;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
537 void *buffer;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
538
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
539 /* Stop currently playing sound */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
540 Buffoper(0);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
541
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
542 switch (spec->format & 0xff) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
543 case 8:
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
544 if (spec->channels==2) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
545 channels_mode=STEREO8;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
546 } else {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
547 channels_mode=MONO8;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
548 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
549 break;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
550 case 16:
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
551 if (spec->channels==2) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
552 channels_mode=STEREO16;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
553 } else {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
554 channels_mode=MONO16;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
555 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
556 break;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
557 default:
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
558 channels_mode=STEREO16;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
559 break;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
560 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
561 Setmode(channels_mode);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
562
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
563 Devconnect(0, 0, CLKEXT, numfreq, 1);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
564
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
565 /* Set buffer */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
566 buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
567 Setbuffer(0, buffer, buffer+SDL_MintAudio_audiosize);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
568
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
569 /* Install interrupt */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
570 NSetinterrupt(2, SI_PLAY, SDL_MintAudio_IntGsxb);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
571
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
572 /* Go */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
573 Buffoper(SB_PLA_ENA|SB_PLA_RPT);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
574 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
575
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
576 static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec)
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
577 {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
578 /* Lock sound system */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
579 if ((cookie_snd & SND_16BIT)!=0) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
580 if (Locksnd()!=1) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
581 SDL_SetError("Mint_OpenAudio: Audio system already in use");
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
582 return(-1);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
583 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
584 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
585
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
586 /* Check audio capabilities */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
587 if (cookie_gsxb && ((cookie_snd & (SND_GSXB|SND_16BIT))==(SND_GSXB|SND_16BIT)) ) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
588 if (Mint_CheckAudio_Gsxb(spec)==-1) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
589 return -1;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
590 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
591 } else if ((cookie_snd & SND_16BIT)!=0) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
592 Mint_CheckAudio_Xbios(spec);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
593 } else if ((cookie_snd & SND_8BIT)!=0) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
594 Mint_CheckAudio_Dma8(spec);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
595 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
596
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
597 SDL_CalculateAudioSpec(spec);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
598
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
599 /* Allocate memory for audio buffers in DMA-able RAM */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
600 spec->size = spec->samples;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
601 spec->size *= spec->channels;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
602 spec->size *= (spec->format & 0xFF)/8;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
603
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
604 SDL_MintAudio_audiosize = spec->size;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
605
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
606 SDL_MintAudio_audiobuf[0] = Atari_SysMalloc(SDL_MintAudio_audiosize *2, MX_STRAM);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
607 if (SDL_MintAudio_audiobuf[0]==NULL) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
608 SDL_SetError("MINT_OpenAudio: Not enough memory for audio buffer");
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
609 return (-1);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
610 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
611 SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + SDL_MintAudio_audiosize;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
612 SDL_MintAudio_numbuf=0;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
613 memset(SDL_MintAudio_audiobuf[0], 0, SDL_MintAudio_audiosize * 2);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
614 SDL_MintAudio_mutex = 0;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
615
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
616 SDL_MintAudio_device = this;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
617
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
618 /* Setup audio hardware */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
619 if (cookie_gsxb && ((cookie_snd & (SND_GSXB|SND_16BIT))==(SND_GSXB|SND_16BIT)) ) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
620 Mint_InitAudio_Gsxb(spec);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
621 } else if ((cookie_snd & SND_16BIT)!=0) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
622 Mint_InitAudio_Xbios(spec);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
623 } else if ((cookie_snd & SND_8BIT)!=0) {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
624 Mint_InitAudio_Dma8(spec);
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
625 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
626
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
627 return 1;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
628 }