Mercurial > sdl-ios-xcode
annotate src/audio/mint/SDL_mintaudio_xbios.c @ 2482:b51ad78812d5 gsoc2008_force_feedback
Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Added and partially implemented CONDITION and RAMP effects.
author | Edgar Simo <bobbens@gmail.com> |
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date | Tue, 01 Jul 2008 11:21:36 +0000 |
parents | 29e07f91bc1f |
children | 99210400e8b9 |
rev | line source |
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1 /* |
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2 SDL - Simple DirectMedia Layer |
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Updated copyright information for 2004 (Happy New Year!)
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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 |
1412 | 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 unsigned long cookie_snd = 0; |
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64 |
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65 static void |
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66 MINTXBIOS_LockDevice(_THIS) |
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67 { |
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68 /* Stop replay */ |
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69 Buffoper(0); |
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70 } |
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71 |
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72 static void |
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73 MINTXBIOS_UnlockDevice(_THIS) |
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74 { |
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75 /* Restart replay */ |
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76 Buffoper(SB_PLA_ENA | SB_PLA_RPT); |
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77 } |
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78 |
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79 static void |
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80 MINTXBIOS_CloseDevice(_THIS) |
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81 { |
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82 if (this->hidden != NULL) { |
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83 /* Stop replay */ |
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84 SDL_MintAudio_WaitThread(); |
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85 Buffoper(0); |
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86 |
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87 if (!SDL_MintAudio_mint_present) { |
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88 /* Uninstall interrupt */ |
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89 Jdisint(MFP_DMASOUND); |
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90 } |
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91 |
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92 /* Wait if currently playing sound */ |
2060 | 93 while (SDL_MintAudio_mutex != 0) { |
94 } | |
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95 |
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96 /* Clear buffers */ |
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97 if (SDL_MintAudio_audiobuf[0]) { |
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98 Mfree(SDL_MintAudio_audiobuf[0]); |
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99 SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL; |
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100 } |
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101 |
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102 /* Unlock sound system */ |
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103 Unlocksnd(); |
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104 |
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105 SDL_free(this->hidden); |
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106 this->hidden = NULL; |
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107 } |
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108 } |
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109 |
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110 /* Falcon XBIOS implementation of Devconnect() is buggy with external clock */ |
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111 static void |
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112 Devconnect2(int src, int dst, int sclk, int pre) |
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113 { |
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114 static const unsigned short MASK1[3] = { 0, 0x6000, 0 }; |
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115 static const unsigned short MASK2[4] = { 0xFFF0, 0xFF8F, 0xF0FF, 0x0FFF }; |
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116 static const unsigned short INDEX1[4] = { 1, 3, 5, 7 }; |
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117 static const unsigned short INDEX2[4] = { 0, 2, 4, 6 }; |
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118 unsigned short sync_div, dev_ctrl, dest_ctrl; |
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119 void *oldstack; |
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120 |
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121 if (dst == 0) { |
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122 return; |
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123 } |
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124 |
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125 oldstack = (void *) Super(0); |
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126 |
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127 dev_ctrl = DMAAUDIO_IO.dev_ctrl; |
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128 dest_ctrl = DMAAUDIO_IO.dest_ctrl; |
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129 dev_ctrl &= MASK2[src]; |
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130 |
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131 if (src == ADC) { |
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132 dev_ctrl |= MASK1[sclk]; |
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133 } else { |
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134 dev_ctrl |= (INDEX1[sclk] << (src << 4)); |
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135 } |
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136 |
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137 if (dst & DMAREC) { |
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138 dest_ctrl &= 0xFFF0; |
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139 dest_ctrl |= INDEX1[src]; |
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140 } |
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141 |
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142 if (dst & DSPRECV) { |
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143 dest_ctrl &= 0xFF8F; |
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144 dest_ctrl |= (INDEX1[src] << 4); |
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145 } |
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146 |
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147 if (dst & EXTOUT) { |
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148 dest_ctrl &= 0xF0FF; |
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149 dest_ctrl |= (INDEX1[src] << 8); |
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150 } |
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151 |
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152 if (dst & DAC) { |
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153 dev_ctrl &= 0x0FFF; |
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154 dev_ctrl |= MASK1[sclk]; |
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155 dest_ctrl &= 0x0FFF; |
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156 dest_ctrl |= (INDEX2[src] << 12); |
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157 } |
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158 |
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159 sync_div = DMAAUDIO_IO.sync_div; |
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160 if (sclk == CLKEXT) { |
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161 pre <<= 8; |
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162 sync_div &= 0xF0FF; |
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163 } else { |
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164 sync_div &= 0xFFF0; |
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165 } |
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166 sync_div |= pre; |
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167 |
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168 DMAAUDIO_IO.dev_ctrl = dev_ctrl; |
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169 DMAAUDIO_IO.dest_ctrl = dest_ctrl; |
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170 DMAAUDIO_IO.sync_div = sync_div; |
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171 |
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172 Super(oldstack); |
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173 } |
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174 |
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175 static void |
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Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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176 MINTXBIOS_CheckExternalClock(_THIS) |
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177 { |
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178 #define SIZE_BUF_CLOCK_MEASURE (44100/10) |
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179 |
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180 unsigned long cookie_snd; |
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181 char *buffer; |
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182 int i, j; |
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183 |
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184 /* DSP present with its GPIO port ? */ |
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185 if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) { |
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186 return; |
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187 } |
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188 if ((cookie_snd & SND_DSP) == 0) { |
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189 return; |
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190 } |
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191 |
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192 buffer = Atari_SysMalloc(SIZE_BUF_CLOCK_MEASURE, MX_STRAM); |
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193 if (buffer == NULL) { |
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194 DEBUG_PRINT((DEBUG_NAME "Not enough memory for the measure\n")); |
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195 return; |
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196 } |
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197 SDL_memset(buffer, 0, SIZE_BUF_CLOCK_MEASURE); |
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198 |
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199 Buffoper(0); |
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200 Settracks(0, 0); |
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201 Setmontracks(0); |
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202 Setmode(MONO8); |
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203 Jdisint(MFP_TIMERA); |
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204 |
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205 for (i = 0; i < 2; i++) { |
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206 Gpio(GPIO_SET, 7); /* DSP port gpio outputs */ |
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207 Gpio(GPIO_WRITE, 2 + i); /* 22.5792/24.576 MHz for 44.1/48KHz */ |
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208 Devconnect2(DMAPLAY, DAC, CLKEXT, CLK50K); /* Matrix and clock source */ |
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209 Setbuffer(0, buffer, buffer + SIZE_BUF_CLOCK_MEASURE); /* Set buffer */ |
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210 Xbtimer(XB_TIMERA, 5, 38, SDL_MintAudio_XbiosInterruptMeasureClock); /* delay mode timer A, prediv /64, 1KHz */ |
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211 Jenabint(MFP_TIMERA); |
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212 SDL_MintAudio_clocktics = 0; |
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213 Buffoper(SB_PLA_ENA); |
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214 usleep(110000); |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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215 |
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216 if ((Buffoper(-1) & 1) == 0) { |
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217 if (SDL_MintAudio_clocktics) { |
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218 unsigned long khz; |
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219 |
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220 khz = |
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221 ((SIZE_BUF_CLOCK_MEASURE / |
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222 SDL_MintAudio_clocktics) + 1) & 0xFFFFFFFE; |
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223 DEBUG_PRINT((DEBUG_NAME "measure %d: freq=%lu KHz\n", |
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224 i + 1, khz)); |
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225 |
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226 if (khz == 44) { |
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227 for (j = 1; j < 4; j++) { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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228 SDL_MintAudio_AddFrequency(this, |
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229 MASTERCLOCK_44K |
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230 / |
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231 (MASTERPREDIV_FALCON |
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232 * (1 << j)), |
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233 MASTERCLOCK_44K, |
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234 (1 << j) - 1, 2 + i); |
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235 } |
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236 } else if (khz == 48) { |
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237 for (j = 1; j < 4; j++) { |
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238 SDL_MintAudio_AddFrequency(this, |
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239 MASTERCLOCK_48K |
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240 / |
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241 (MASTERPREDIV_FALCON |
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242 * (1 << j)), |
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243 MASTERCLOCK_48K, |
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244 (1 << j) - 1, 2 + i); |
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245 } |
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246 } |
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247 } else { |
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248 DEBUG_PRINT((DEBUG_NAME "No measure\n")); |
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249 } |
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250 } else { |
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251 DEBUG_PRINT((DEBUG_NAME "No SDMA clock\n")); |
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252 } |
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253 |
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254 Buffoper(0); /* stop */ |
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255 Jdisint(MFP_TIMERA); /* Uninstall interrupt */ |
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256 } |
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257 |
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258 Mfree(buffer); |
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259 } |
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260 |
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261 static int |
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262 MINTXBIOS_CheckAudio(_THIS) |
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263 { |
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264 int i; |
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265 Uint32 extclock; |
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266 |
2043 | 267 DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ", |
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268 SDL_AUDIO_BITSIZE(this->spec.format))); |
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269 DEBUG_PRINT(("float=%d, ", SDL_AUDIO_ISFLOAT(this->spec.format))); |
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270 DEBUG_PRINT(("signed=%d, ", SDL_AUDIO_ISSIGNED(this->spec.format))); |
2060 | 271 DEBUG_PRINT(("big endian=%d, ", |
272 SDL_AUDIO_ISBIGENDIAN(this->spec.format))); | |
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273 DEBUG_PRINT(("channels=%d, ", this->spec.channels)); |
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274 DEBUG_PRINT(("freq=%d\n", this->spec.freq)); |
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275 |
2060 | 276 this->spec.format |= SDL_AUDIO_MASK_SIGNED; /* Audio is always signed */ |
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277 |
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278 /* clamp out int32/float32 */ |
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279 if (SDL_AUDIO_BITSIZE(this->spec.format) >= 16) { |
2060 | 280 this->spec.format = AUDIO_S16MSB; /* Audio is always big endian */ |
281 this->spec.channels = 2; /* 16 bits always stereo */ | |
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282 } else if (this->spec.channels > 2) { |
2060 | 283 this->spec.channels = 2; /* no more than stereo! */ |
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284 } |
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285 |
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286 MINTAUDIO_freqcount = 0; |
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287 |
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288 /* Add external clocks if present */ |
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289 MINTXBIOS_CheckExternalClock(this); |
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290 |
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291 /* Standard clocks */ |
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292 for (i = 1; i < 12; i++) { |
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293 /* Remove unusable Falcon codec predivisors */ |
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294 if ((i == 6) || (i == 8) || (i == 10)) { |
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295 continue; |
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296 } |
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297 SDL_MintAudio_AddFrequency(this, |
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298 MASTERCLOCK_FALCON1 / |
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299 (MASTERPREDIV_FALCON * (i + 1)), |
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300 MASTERCLOCK_FALCON1, i, -1); |
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301 } |
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302 |
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303 #if 1 |
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304 for (i = 0; i < MINTAUDIO_freqcount; i++) { |
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305 DEBUG_PRINT((DEBUG_NAME "freq %d: %lu Hz, clock %lu, prediv %d\n", |
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306 i, MINTAUDIO_frequencies[i].frequency, |
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307 MINTAUDIO_frequencies[i].masterclock, |
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308 MINTAUDIO_frequencies[i].predivisor)); |
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309 } |
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310 #endif |
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311 |
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312 MINTAUDIO_numfreq = SDL_MintAudio_SearchFrequency(this, this->spec.freq); |
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313 this->spec.freq = MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency; |
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314 |
2043 | 315 DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ", |
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316 SDL_AUDIO_BITSIZE(this->spec.format))); |
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317 DEBUG_PRINT(("float=%d, ", SDL_AUDIO_ISFLOAT(this->spec.format))); |
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318 DEBUG_PRINT(("signed=%d, ", SDL_AUDIO_ISSIGNED(this->spec.format))); |
2060 | 319 DEBUG_PRINT(("big endian=%d, ", |
320 SDL_AUDIO_ISBIGENDIAN(this->spec.format))); | |
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321 DEBUG_PRINT(("channels=%d, ", this->spec.channels)); |
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322 DEBUG_PRINT(("freq=%d\n", this->spec.freq)); |
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323 |
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324 return 0; |
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325 } |
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326 |
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327 static void |
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328 MINTXBIOS_InitAudio(_THIS) |
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329 { |
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330 int channels_mode, dmaclock, prediv; |
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331 void *buffer; |
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332 |
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333 /* Stop currently playing sound */ |
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334 SDL_MintAudio_quit_thread = SDL_FALSE; |
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335 SDL_MintAudio_thread_finished = SDL_TRUE; |
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336 SDL_MintAudio_WaitThread(); |
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337 Buffoper(0); |
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338 |
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339 /* Set replay tracks */ |
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340 Settracks(0, 0); |
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341 Setmontracks(0); |
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342 |
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343 /* Select replay format */ |
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344 channels_mode = STEREO16; |
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345 switch (SDL_AUDIO_BITSIZE(this->spec.format)) { |
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346 case 8: |
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347 if (this->spec.channels == 2) { |
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348 channels_mode = STEREO8; |
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349 } else { |
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350 channels_mode = MONO8; |
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351 } |
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352 break; |
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353 } |
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354 if (Setmode(channels_mode) < 0) { |
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355 DEBUG_PRINT((DEBUG_NAME "Setmode() failed\n")); |
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356 } |
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357 |
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358 dmaclock = MINTAUDIO_frequencies[MINTAUDIO_numfreq].masterclock; |
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359 prediv = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor; |
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360 if (MINTAUDIO_frequencies[MINTAUDIO_numfreq].gpio_bits != -1) { |
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361 Gpio(GPIO_SET, 7); /* DSP port gpio outputs */ |
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362 Gpio(GPIO_WRITE, MINTAUDIO_frequencies[MINTAUDIO_numfreq].gpio_bits); |
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363 Devconnect2(DMAPLAY, DAC | EXTOUT, CLKEXT, prediv); |
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364 } else { |
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365 Devconnect2(DMAPLAY, DAC, CLK25M, prediv); |
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366 } |
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367 |
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368 /* Set buffer */ |
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369 buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf]; |
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370 if (Setbuffer(0, buffer, buffer + this->spec.size) < 0) { |
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371 DEBUG_PRINT((DEBUG_NAME "Setbuffer() failed\n")); |
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372 } |
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373 |
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374 if (SDL_MintAudio_mint_present) { |
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375 SDL_MintAudio_thread_pid = tfork(SDL_MintAudio_Thread, 0); |
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376 } else { |
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377 /* Install interrupt */ |
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378 Jdisint(MFP_DMASOUND); |
2043 | 379 /*Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_XbiosInterrupt); */ |
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380 Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_Dma8Interrupt); |
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381 Jenabint(MFP_DMASOUND); |
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382 |
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383 if (Setinterrupt(SI_TIMERA, SI_PLAY) < 0) { |
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384 DEBUG_PRINT((DEBUG_NAME "Setinterrupt() failed\n")); |
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385 } |
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386 } |
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387 |
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388 /* Go */ |
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389 Buffoper(SB_PLA_ENA | SB_PLA_RPT); |
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390 DEBUG_PRINT((DEBUG_NAME "hardware initialized\n")); |
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391 } |
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392 |
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393 static int |
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394 MINTXBIOS_OpenDevice(_THIS, const char *devname, int iscapture) |
644
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395 { |
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396 /* Lock sound system */ |
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397 if (Locksnd() != 1) { |
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398 SDL_SetError("MINTXBIOS_OpenAudio: Audio system already in use"); |
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399 return 0; |
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400 } |
644
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401 |
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402 SDL_MintAudio_device = this; |
644
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403 |
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404 /* Check audio capabilities */ |
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405 if (MINTXBIOS_CheckAudio(this) == -1) { |
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|
406 return 0; |
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|
407 } |
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|
408 |
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|
409 /* Initialize all variables that we clean on shutdown */ |
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|
410 this->hidden = (struct SDL_PrivateAudioData *) |
2060 | 411 SDL_malloc((sizeof *this->hidden)); |
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412 if (this->hidden == NULL) { |
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|
413 SDL_OutOfMemory(); |
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414 return 0; |
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415 } |
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|
416 SDL_memset(this->hidden, 0, (sizeof *this->hidden)); |
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417 |
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418 SDL_CalculateAudioSpec(&this->spec); |
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419 |
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|
420 /* Allocate memory for audio buffers in DMA-able RAM */ |
2049
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|
421 DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", this->spec.size)); |
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|
422 |
2060 | 423 SDL_MintAudio_audiobuf[0] = |
424 Atari_SysMalloc(this->spec.size * 2, MX_STRAM); | |
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425 if (SDL_MintAudio_audiobuf[0] == NULL) { |
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426 SDL_free(this->hidden); |
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|
427 this->hidden = NULL; |
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|
428 SDL_OutOfMemory(); |
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429 return 0; |
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430 } |
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|
431 SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + this->spec.size; |
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432 SDL_MintAudio_numbuf = 0; |
2060 | 433 SDL_memset(SDL_MintAudio_audiobuf[0], this->spec.silence, |
434 this->spec.size * 2); | |
2049
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|
435 SDL_MintAudio_audiosize = this->spec.size; |
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436 SDL_MintAudio_mutex = 0; |
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437 |
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438 DEBUG_PRINT((DEBUG_NAME "buffer 0 at 0x%08x\n", |
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439 SDL_MintAudio_audiobuf[0])); |
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440 DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", |
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441 SDL_MintAudio_audiobuf[1])); |
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442 |
2027
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443 SDL_MintAudio_CheckFpu(); |
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444 |
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445 /* Setup audio hardware */ |
2049
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446 MINTXBIOS_InitAudio(this); |
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447 |
2060 | 448 return 1; /* good to go. */ |
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449 } |
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450 |
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|
451 static int |
2060 | 452 MINTXBIOS_Init(SDL_AudioDriverImpl * impl) |
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453 { |
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454 unsigned long dummy = 0; |
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455 /*SDL_MintAudio_mint_present = (Getcookie(C_MiNT, &dummy) == C_FOUND); */ |
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456 SDL_MintAudio_mint_present = SDL_FALSE; |
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457 |
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458 /* We can't use XBIOS in interrupt with Magic, don't know about thread */ |
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459 if (Getcookie(C_MagX, &dummy) == C_FOUND) { |
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460 return (0); |
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461 } |
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462 |
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463 /* Cookie _SND present ? if not, assume ST machine */ |
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464 if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) { |
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465 cookie_snd = SND_PSG; |
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466 } |
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467 |
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468 /* Check if we have 16 bits audio */ |
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469 if ((cookie_snd & SND_16BIT) == 0) { |
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470 SDL_SetError(DEBUG_NAME "no 16-bit sound"); |
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471 return (0); |
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472 } |
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473 |
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474 /* Check if audio is lockable */ |
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475 if (Locksnd() != 1) { |
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476 SDL_SetError(DEBUG_NAME "audio locked by other application"); |
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477 return (0); |
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478 } |
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479 |
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480 Unlocksnd(); |
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481 |
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482 DEBUG_PRINT((DEBUG_NAME "XBIOS audio available!\n")); |
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483 |
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484 /* Set the function pointers */ |
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485 impl->OpenDevice = MINTXBIOS_OpenDevice; |
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486 impl->CloseDevice = MINTXBIOS_CloseDevice; |
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487 impl->LockDevice = MINTXBIOS_LockDevice; |
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488 impl->UnlockDevice = MINTXBIOS_UnlockDevice; |
2049
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489 impl->OnlyHasDefaultOutputDevice = 1; |
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490 impl->ProvidesOwnCallbackThread = 1; |
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491 impl->SkipMixerLock = 1; |
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492 |
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493 return 1; |
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494 } |
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495 |
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496 AudioBootStrap MINTAUDIO_XBIOS_bootstrap = { |
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497 MINT_AUDIO_DRIVER_NAME, "MiNT XBIOS audio driver", MINTXBIOS_Init, 0 |
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498 }; |
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499 |
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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500 /* vi: set ts=4 sw=4 expandtab: */ |