annotate src/audio/mint/SDL_mintaudio_xbios.c @ 1662:782fd950bd46 SDL-1.3

Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API. WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid. The code is now run through a consistent indent format: indent -i4 -nut -nsc -br -ce The headers are being converted to automatically generate doxygen documentation.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 28 May 2006 13:04:16 +0000
parents a8181c4040b8
children 4da1ee79c9af
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
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81 Audio_Available (void)
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82 {
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83 unsigned long dummy;
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84 const char *envr = SDL_getenv ("SDL_AUDIODRIVER");
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86 SDL_MintAudio_mint_present = (Getcookie (C_MiNT, &dummy) == C_FOUND);
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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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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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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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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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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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122 static void
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123 Audio_DeleteDevice (SDL_AudioDevice * device)
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124 {
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125 SDL_free (device->hidden);
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126 SDL_free (device);
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127 }
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128
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129 static SDL_AudioDevice *
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130 Audio_CreateDevice (int devindex)
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131 {
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132 SDL_AudioDevice *this;
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133
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134 /* Initialize all variables that we clean on shutdown */
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135 this = (SDL_AudioDevice *) SDL_malloc (sizeof (SDL_AudioDevice));
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136 if (this) {
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137 SDL_memset (this, 0, (sizeof *this));
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138 this->hidden = (struct SDL_PrivateAudioData *)
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139 SDL_malloc ((sizeof *this->hidden));
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140 }
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141 if ((this == NULL) || (this->hidden == NULL)) {
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142 SDL_OutOfMemory ();
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143 if (this) {
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144 SDL_free (this);
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145 }
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146 return (0);
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147 }
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148 SDL_memset (this->hidden, 0, (sizeof *this->hidden));
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149
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150 /* Set the function pointers */
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151 this->OpenAudio = Mint_OpenAudio;
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152 this->CloseAudio = Mint_CloseAudio;
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153 this->LockAudio = Mint_LockAudio;
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154 this->UnlockAudio = Mint_UnlockAudio;
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155 this->free = Audio_DeleteDevice;
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156
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157 return this;
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158 }
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159
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160 AudioBootStrap MINTAUDIO_XBIOS_bootstrap = {
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161 MINT_AUDIO_DRIVER_NAME, "MiNT XBIOS audio driver",
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162 Audio_Available, Audio_CreateDevice
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163 };
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164
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165 static void
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166 Mint_LockAudio (_THIS)
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167 {
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168 /* Stop replay */
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169 Buffoper (0);
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170 }
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171
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172 static void
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173 Mint_UnlockAudio (_THIS)
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174 {
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175 /* Restart replay */
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176 Buffoper (SB_PLA_ENA | SB_PLA_RPT);
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177 }
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178
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179 static void
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180 Mint_CloseAudio (_THIS)
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181 {
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182 /* Stop replay */
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183 SDL_MintAudio_WaitThread ();
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184 Buffoper (0);
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185
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186 if (!SDL_MintAudio_mint_present) {
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187 /* Uninstall interrupt */
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188 Jdisint (MFP_DMASOUND);
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189 }
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190
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191 /* Wait if currently playing sound */
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192 while (SDL_MintAudio_mutex != 0) {
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193 }
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194
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195 /* Clear buffers */
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196 if (SDL_MintAudio_audiobuf[0]) {
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197 Mfree (SDL_MintAudio_audiobuf[0]);
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198 SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL;
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199 }
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200
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201 /* Unlock sound system */
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202 Unlocksnd ();
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203 }
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204
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205 /* Falcon XBIOS implementation of Devconnect() is buggy with external clock */
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206 static void
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207 Devconnect2 (int src, int dst, int sclk, int pre)
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208 {
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209 static const unsigned short MASK1[3] = { 0, 0x6000, 0 };
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210 static const unsigned short MASK2[4] = { 0xFFF0, 0xFF8F, 0xF0FF, 0x0FFF };
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211 static const unsigned short INDEX1[4] = { 1, 3, 5, 7 };
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212 static const unsigned short INDEX2[4] = { 0, 2, 4, 6 };
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213 unsigned short sync_div, dev_ctrl, dest_ctrl;
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214 void *oldstack;
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215
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216 if (dst == 0) {
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217 return;
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218 }
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219
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220 oldstack = (void *) Super (0);
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221
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222 dev_ctrl = DMAAUDIO_IO.dev_ctrl;
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223 dest_ctrl = DMAAUDIO_IO.dest_ctrl;
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224 dev_ctrl &= MASK2[src];
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225
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226 if (src == ADC) {
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227 dev_ctrl |= MASK1[sclk];
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228 } else {
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229 dev_ctrl |= (INDEX1[sclk] << (src << 4));
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230 }
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231
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232 if (dst & DMAREC) {
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233 dest_ctrl &= 0xFFF0;
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234 dest_ctrl |= INDEX1[src];
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235 }
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236
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237 if (dst & DSPRECV) {
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238 dest_ctrl &= 0xFF8F;
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239 dest_ctrl |= (INDEX1[src] << 4);
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240 }
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241
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242 if (dst & EXTOUT) {
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243 dest_ctrl &= 0xF0FF;
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244 dest_ctrl |= (INDEX1[src] << 8);
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245 }
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246
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247 if (dst & DAC) {
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248 dev_ctrl &= 0x0FFF;
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249 dev_ctrl |= MASK1[sclk];
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250 dest_ctrl &= 0x0FFF;
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251 dest_ctrl |= (INDEX2[src] << 12);
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252 }
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253
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254 sync_div = DMAAUDIO_IO.sync_div;
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255 if (sclk == CLKEXT) {
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256 pre <<= 8;
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257 sync_div &= 0xF0FF;
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258 } else {
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259 sync_div &= 0xFFF0;
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260 }
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diff changeset
261 sync_div |= pre;
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262
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263 DMAAUDIO_IO.dev_ctrl = dev_ctrl;
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264 DMAAUDIO_IO.dest_ctrl = dest_ctrl;
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diff changeset
265 DMAAUDIO_IO.sync_div = sync_div;
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266
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diff changeset
267 Super (oldstack);
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268 }
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269
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270 static void
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271 Mint_CheckExternalClock (_THIS)
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272 {
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273 #define SIZE_BUF_CLOCK_MEASURE (44100/10)
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274
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275 unsigned long cookie_snd;
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276 char *buffer;
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277 int i, j;
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278
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279 /* DSP present with its GPIO port ? */
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280 if (Getcookie (C__SND, &cookie_snd) == C_NOTFOUND) {
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281 return;
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282 }
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diff changeset
283 if ((cookie_snd & SND_DSP) == 0) {
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284 return;
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285 }
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diff changeset
286
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diff changeset
287 buffer = Atari_SysMalloc (SIZE_BUF_CLOCK_MEASURE, MX_STRAM);
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diff changeset
288 if (buffer == NULL) {
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289 DEBUG_PRINT ((DEBUG_NAME "Not enough memory for the measure\n"));
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290 return;
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291 }
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292 SDL_memset (buffer, 0, SIZE_BUF_CLOCK_MEASURE);
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293
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294 Buffoper (0);
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295 Settracks (0, 0);
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296 Setmontracks (0);
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297 Setmode (MONO8);
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298 Jdisint (MFP_TIMERA);
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299
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diff changeset
300 for (i = 0; i < 2; i++) {
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301 Gpio (GPIO_SET, 7); /* DSP port gpio outputs */
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302 Gpio (GPIO_WRITE, 2 + i); /* 22.5792/24.576 MHz for 44.1/48KHz */
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303 Devconnect2 (DMAPLAY, DAC, CLKEXT, CLK50K); /* Matrix and clock source */
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304 Setbuffer (0, buffer, buffer + SIZE_BUF_CLOCK_MEASURE); /* Set buffer */
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305 Xbtimer (XB_TIMERA, 5, 38, SDL_MintAudio_XbiosInterruptMeasureClock); /* delay mode timer A, prediv /64, 1KHz */
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306 Jenabint (MFP_TIMERA);
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307 SDL_MintAudio_clocktics = 0;
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diff changeset
308 Buffoper (SB_PLA_ENA);
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diff changeset
309 usleep (110000);
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310
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diff changeset
311 if ((Buffoper (-1) & 1) == 0) {
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diff changeset
312 if (SDL_MintAudio_clocktics) {
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diff changeset
313 unsigned long khz;
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314
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315 khz =
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316 ((SIZE_BUF_CLOCK_MEASURE /
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diff changeset
317 SDL_MintAudio_clocktics) + 1) & 0xFFFFFFFE;
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318 DEBUG_PRINT ((DEBUG_NAME "measure %d: freq=%lu KHz\n",
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diff changeset
319 i + 1, khz));
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diff changeset
320
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diff changeset
321 if (khz == 44) {
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diff changeset
322 for (j = 1; j < 4; j++) {
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diff changeset
323 SDL_MintAudio_AddFrequency (this,
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324 MASTERCLOCK_44K
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diff changeset
325 /
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diff changeset
326 (MASTERPREDIV_FALCON
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diff changeset
327 * (1 << j)),
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diff changeset
328 MASTERCLOCK_44K,
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diff changeset
329 (1 << j) - 1, 2 + i);
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diff changeset
330 }
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diff changeset
331 } else if (khz == 48) {
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diff changeset
332 for (j = 1; j < 4; j++) {
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diff changeset
333 SDL_MintAudio_AddFrequency (this,
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diff changeset
334 MASTERCLOCK_48K
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diff changeset
335 /
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diff changeset
336 (MASTERPREDIV_FALCON
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diff changeset
337 * (1 << j)),
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diff changeset
338 MASTERCLOCK_48K,
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diff changeset
339 (1 << j) - 1, 2 + i);
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diff changeset
340 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
341 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
342 } else {
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diff changeset
343 DEBUG_PRINT ((DEBUG_NAME "No measure\n"));
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diff changeset
344 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
345 } else {
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diff changeset
346 DEBUG_PRINT ((DEBUG_NAME "No SDMA clock\n"));
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diff changeset
347 }
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348
1662
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diff changeset
349 Buffoper (0); /* stop */
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diff changeset
350 Jdisint (MFP_TIMERA); /* Uninstall interrupt */
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diff changeset
351 }
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352
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diff changeset
353 Mfree (buffer);
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354 }
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diff changeset
355
1662
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diff changeset
356 static int
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diff changeset
357 Mint_CheckAudio (_THIS, SDL_AudioSpec * spec)
644
594422ab8f9f Atari MiNT: added more audio drivers
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diff changeset
358 {
1662
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diff changeset
359 int i;
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diff changeset
360 Uint32 extclock;
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
361
1662
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diff changeset
362 DEBUG_PRINT ((DEBUG_NAME "asked: %d bits, ", spec->format & 0x00ff));
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diff changeset
363 DEBUG_PRINT (("signed=%d, ", ((spec->format & 0x8000) != 0)));
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diff changeset
364 DEBUG_PRINT (("big endian=%d, ", ((spec->format & 0x1000) != 0)));
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
365 DEBUG_PRINT (("channels=%d, ", spec->channels));
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diff changeset
366 DEBUG_PRINT (("freq=%d\n", spec->freq));
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
367
1662
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diff changeset
368 spec->format |= 0x8000; /* Audio is always signed */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
369 if ((spec->format & 0x00ff) == 16) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
370 spec->format |= 0x1000; /* Audio is always big endian */
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diff changeset
371 spec->channels = 2; /* 16 bits always stereo */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1412
diff changeset
372 }
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
373
1662
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Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
374 MINTAUDIO_freqcount = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
375
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
376 /* Add external clocks if present */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
377 Mint_CheckExternalClock (this);
1107
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1106
diff changeset
378
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
379 /* Standard clocks */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
380 for (i = 1; i < 12; i++) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
381 /* Remove unusable Falcon codec predivisors */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
382 if ((i == 6) || (i == 8) || (i == 10)) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
383 continue;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
384 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
385 SDL_MintAudio_AddFrequency (this,
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
386 MASTERCLOCK_FALCON1 /
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
387 (MASTERPREDIV_FALCON * (i + 1)),
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
388 MASTERCLOCK_FALCON1, i, -1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
389 }
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
390
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
391 #if 1
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
392 for (i = 0; i < MINTAUDIO_freqcount; i++) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
393 DEBUG_PRINT ((DEBUG_NAME "freq %d: %lu Hz, clock %lu, prediv %d\n",
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
394 i, MINTAUDIO_frequencies[i].frequency,
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
395 MINTAUDIO_frequencies[i].masterclock,
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
396 MINTAUDIO_frequencies[i].predivisor));
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
397 }
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
398 #endif
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
399
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Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
400 MINTAUDIO_numfreq = SDL_MintAudio_SearchFrequency (this, spec->freq);
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Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
401 spec->freq = MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency;
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
402
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
403 DEBUG_PRINT ((DEBUG_NAME "obtained: %d bits, ", spec->format & 0x00ff));
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
404 DEBUG_PRINT (("signed=%d, ", ((spec->format & 0x8000) != 0)));
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
405 DEBUG_PRINT (("big endian=%d, ", ((spec->format & 0x1000) != 0)));
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
406 DEBUG_PRINT (("channels=%d, ", spec->channels));
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
407 DEBUG_PRINT (("freq=%d\n", spec->freq));
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
408
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
409 return 0;
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
410 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
411
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
412 static void
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
413 Mint_InitAudio (_THIS, SDL_AudioSpec * spec)
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
414 {
1662
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
415 int channels_mode, dmaclock, prediv;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
416 void *buffer;
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
417
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
418 /* Stop currently playing sound */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
419 SDL_MintAudio_quit_thread = SDL_FALSE;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
420 SDL_MintAudio_thread_finished = SDL_TRUE;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
421 SDL_MintAudio_WaitThread ();
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
422 Buffoper (0);
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
423
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
424 /* Set replay tracks */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
425 Settracks (0, 0);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
426 Setmontracks (0);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
427
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
428 /* Select replay format */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
429 channels_mode = STEREO16;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
430 switch (spec->format & 0xff) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
431 case 8:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
432 if (spec->channels == 2) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
433 channels_mode = STEREO8;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
434 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
435 channels_mode = MONO8;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
436 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
437 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
438 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
439 if (Setmode (channels_mode) < 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
440 DEBUG_PRINT ((DEBUG_NAME "Setmode() failed\n"));
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
441 }
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
442
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
443 dmaclock = MINTAUDIO_frequencies[MINTAUDIO_numfreq].masterclock;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
444 prediv = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
445 if (MINTAUDIO_frequencies[MINTAUDIO_numfreq].gpio_bits != -1) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
446 Gpio (GPIO_SET, 7); /* DSP port gpio outputs */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
447 Gpio (GPIO_WRITE, MINTAUDIO_frequencies[MINTAUDIO_numfreq].gpio_bits);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
448 Devconnect2 (DMAPLAY, DAC | EXTOUT, CLKEXT, prediv);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
449 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
450 Devconnect2 (DMAPLAY, DAC, CLK25M, prediv);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
451 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
452
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
453 /* Set buffer */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
454 buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
455 if (Setbuffer (0, buffer, buffer + spec->size) < 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
456 DEBUG_PRINT ((DEBUG_NAME "Setbuffer() failed\n"));
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
457 }
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
458
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
459 if (SDL_MintAudio_mint_present) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
460 SDL_MintAudio_thread_pid = tfork (SDL_MintAudio_Thread, 0);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
461 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
462 /* Install interrupt */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
463 Jdisint (MFP_DMASOUND);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
464 Xbtimer (XB_TIMERA, 8, 1, SDL_MintAudio_XbiosInterrupt);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
465 Jenabint (MFP_DMASOUND);
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
466
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
467 if (Setinterrupt (SI_TIMERA, SI_PLAY) < 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
468 DEBUG_PRINT ((DEBUG_NAME "Setinterrupt() failed\n"));
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
469 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
470 }
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
471
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
472 /* Go */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
473 Buffoper (SB_PLA_ENA | SB_PLA_RPT);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
474 DEBUG_PRINT ((DEBUG_NAME "hardware initialized\n"));
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
475 }
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
476
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
477 static int
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
478 Mint_OpenAudio (_THIS, SDL_AudioSpec * spec)
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
479 {
1662
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Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
480 /* Lock sound system */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
481 if (Locksnd () != 1) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
482 SDL_SetError ("Mint_OpenAudio: Audio system already in use");
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
483 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
484 }
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
485
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
486 SDL_MintAudio_device = this;
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
487
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
488 /* Check audio capabilities */
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489 if (Mint_CheckAudio (this, spec) == -1) {
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490 return -1;
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491 }
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492
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493 SDL_CalculateAudioSpec (spec);
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494
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495 /* Allocate memory for audio buffers in DMA-able RAM */
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496 DEBUG_PRINT ((DEBUG_NAME "buffer size=%d\n", spec->size));
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497
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498 SDL_MintAudio_audiobuf[0] = Atari_SysMalloc (spec->size * 2, MX_STRAM);
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499 if (SDL_MintAudio_audiobuf[0] == NULL) {
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500 SDL_SetError ("MINT_OpenAudio: Not enough memory for audio buffer");
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501 return (-1);
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502 }
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503 SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + spec->size;
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504 SDL_MintAudio_numbuf = 0;
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505 SDL_memset (SDL_MintAudio_audiobuf[0], spec->silence, spec->size * 2);
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506 SDL_MintAudio_audiosize = spec->size;
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507 SDL_MintAudio_mutex = 0;
644
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508
1662
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509 DEBUG_PRINT ((DEBUG_NAME "buffer 0 at 0x%08x\n",
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510 SDL_MintAudio_audiobuf[0]));
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511 DEBUG_PRINT ((DEBUG_NAME "buffer 1 at 0x%08x\n",
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512 SDL_MintAudio_audiobuf[1]));
644
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513
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514 /* Setup audio hardware */
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515 Mint_InitAudio (this, spec);
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516
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517 return (1); /* We don't use SDL threaded audio */
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518 }
1662
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519
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520 /* vi: set ts=4 sw=4 expandtab: */