Mercurial > sdl-ios-xcode
annotate src/audio/mint/SDL_mintaudio_mcsn.c @ 1192:54aa9aa32327
To: sdl@libsdl.org
From: Christian Walther <cwalther@gmx.ch>
Date: Fri, 18 Nov 2005 23:39:02 +0100
Subject: [SDL] Mouse position bugs on Mac OS X
The attached patch fixes a few bugs in SDL related to the mouse position
in windowed mode on Mac OS X, reproduced using the attached minimal test
program - at least here on 10.3.9, with SDL CVS from today. Could anyone
test whether the bugs exist and are fixed by the patch on 10.2 and 10.4?
1. When using OpenGL, the vertical mouse positions obtained through
events or SDL_GetMouseState() are off by one.
2. When using OpenGL, SDL_WarpMouse() inverts the y coordinate.
3. Clicks on the topmost pixel row of the window are not recognized.
1 and 2 do not occur in non-OpenGL mode, while 3 does. All three only
occur in windowed mode, not in fullscreen.
The cause for 1 and 3 is that in Cocoa, "the location of the mouse"
seems to be defined as "the location of the top left corner of the mouse
pointer's hot pixel" (this is not documented, it's just what I found out
here), which together with the fact that Cocoa's usual y coordinates
start at the bottom and increase upwards means that the y coordinate of
the mouse runs from 1 to h, not from 0 to h-1, in a window of height h.
If it does work on 10.2 and 10.4 (I'll try to test it as soon as I can,
but at the moment all I have at hand is 10.3.9), can this be applied to
the CVS?
-Christian
To: sdl@libsdl.org
From: Christian Walther <cwalther@gmx.ch>
Date: Mon, 28 Nov 2005 10:41:51 +0100
Subject: [SDL] Re: Mouse position bugs on Mac OS X
I wrote:
> I'll try to test it as soon as I can, but at the moment all I have at hand is 10.3.9
So, here are the results of my tests (with patched and unpatched
frameworks compiled with Xcode 1.5 (gcc 3.3) on 10.3.9):
On 10.1.5, my test program doesn't run because of "Undefined symbols:
SDL undefined reference to _CGMainDisplayID expected to be defined in
Carbon". I guess not supporting 10.1 was a deliberate decision then and
that's OK with me.
On 10.2.8, 10.3.9, and 10.4.0, the bugs exist as described in my
original post and are fixed by my patch. That is, there is no difference
between pre/post 10.3 and the patched version works correctly in all
combinations of GL/non-GL and windowed/fullscreen.
I therefore recommend the patch for inclusion.
-Christian
author | Ryan C. Gordon <icculus@icculus.org> |
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date | Mon, 28 Nov 2005 13:58:26 +0000 |
parents | 12c49532be00 |
children | 3692456e7b0f |
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!)
Sam Lantinga <slouken@libsdl.org>
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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 |
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23 /* |
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24 MiNT audio driver |
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25 using XBIOS functions (MacSound compatible driver) |
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26 |
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27 Patrice Mandin |
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28 */ |
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29 |
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30 #include <stdlib.h> |
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31 #include <stdio.h> |
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32 #include <string.h> |
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33 #include <support.h> |
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34 |
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35 /* Mint includes */ |
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36 #include <mint/osbind.h> |
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37 #include <mint/falcon.h> |
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38 #include <mint/cookie.h> |
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39 |
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40 #include "SDL_endian.h" |
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41 #include "SDL_audio.h" |
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42 #include "SDL_audio_c.h" |
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43 #include "SDL_audiomem.h" |
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44 #include "SDL_sysaudio.h" |
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45 |
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46 #include "SDL_atarimxalloc_c.h" |
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47 |
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48 #include "SDL_mintaudio.h" |
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49 #include "SDL_mintaudio_mcsn.h" |
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50 |
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51 /*--- Defines ---*/ |
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52 |
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53 #define MINT_AUDIO_DRIVER_NAME "mint_mcsn" |
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54 |
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55 /* Debug print info */ |
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56 #define DEBUG_NAME "audio:mcsn: " |
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57 #if 0 |
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58 #define DEBUG_PRINT(what) \ |
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59 { \ |
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60 printf what; \ |
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61 } |
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62 #else |
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63 #define DEBUG_PRINT(what) |
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64 #endif |
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65 |
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66 /*--- Static variables ---*/ |
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67 |
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68 static unsigned long cookie_snd, cookie_mch; |
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69 static cookie_mcsn_t *cookie_mcsn; |
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70 |
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71 /*--- Audio driver functions ---*/ |
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72 |
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73 static void Mint_CloseAudio(_THIS); |
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74 static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec); |
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75 static void Mint_LockAudio(_THIS); |
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76 static void Mint_UnlockAudio(_THIS); |
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77 |
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78 /* To check/init hardware audio */ |
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79 static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec); |
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80 static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec); |
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81 |
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82 /*--- Audio driver bootstrap functions ---*/ |
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83 |
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84 static int Audio_Available(void) |
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85 { |
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86 unsigned long dummy; |
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87 const char *envr = getenv("SDL_AUDIODRIVER"); |
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88 |
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89 SDL_MintAudio_mint_present = (Getcookie(C_MiNT, &dummy) == C_FOUND); |
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90 |
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91 /* We can't use XBIOS in interrupt with Magic, don't know about thread */ |
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92 if (Getcookie(C_MagX, &dummy) == C_FOUND) { |
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93 return(0); |
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94 } |
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95 |
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96 /* Check if user asked a different audio driver */ |
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97 if ((envr) && (strcmp(envr, MINT_AUDIO_DRIVER_NAME)!=0)) { |
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98 DEBUG_PRINT((DEBUG_NAME "user asked a different audio driver\n")); |
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99 return(0); |
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100 } |
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101 |
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102 /* Cookie _MCH present ? if not, assume ST machine */ |
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103 if (Getcookie(C__MCH, &cookie_mch) == C_NOTFOUND) { |
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104 cookie_mch = MCH_ST; |
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105 } |
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106 |
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107 /* Cookie _SND present ? if not, assume ST machine */ |
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108 if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) { |
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109 cookie_snd = SND_PSG; |
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110 } |
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111 |
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112 /* Check if we have 16 bits audio */ |
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113 if ((cookie_snd & SND_16BIT)==0) { |
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114 DEBUG_PRINT((DEBUG_NAME "no 16 bits sound\n")); |
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115 return(0); |
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116 } |
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117 |
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118 /* Cookie MCSN present ? */ |
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119 if (Getcookie(C_McSn, (long *) &cookie_mcsn) != C_FOUND) { |
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120 DEBUG_PRINT((DEBUG_NAME "no MCSN audio\n")); |
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121 return(0); |
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122 } |
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123 |
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124 /* Check if interrupt at end of replay */ |
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125 if (cookie_mcsn->pint == 0) { |
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126 DEBUG_PRINT((DEBUG_NAME "no interrupt at end of replay\n")); |
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127 return(0); |
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128 } |
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129 |
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130 /* Check if audio is lockable */ |
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131 if (Locksnd()!=1) { |
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132 DEBUG_PRINT((DEBUG_NAME "audio locked by other application\n")); |
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133 return(0); |
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134 } |
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135 |
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136 Unlocksnd(); |
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137 |
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138 DEBUG_PRINT((DEBUG_NAME "MCSN audio available!\n")); |
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139 return(1); |
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140 } |
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141 |
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142 static void Audio_DeleteDevice(SDL_AudioDevice *device) |
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143 { |
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144 free(device->hidden); |
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145 free(device); |
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146 } |
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147 |
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148 static SDL_AudioDevice *Audio_CreateDevice(int devindex) |
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149 { |
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150 SDL_AudioDevice *this; |
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151 |
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152 /* Initialize all variables that we clean on shutdown */ |
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153 this = (SDL_AudioDevice *)malloc(sizeof(SDL_AudioDevice)); |
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154 if ( this ) { |
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155 memset(this, 0, (sizeof *this)); |
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156 this->hidden = (struct SDL_PrivateAudioData *) |
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157 malloc((sizeof *this->hidden)); |
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158 } |
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159 if ( (this == NULL) || (this->hidden == NULL) ) { |
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160 SDL_OutOfMemory(); |
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161 if ( this ) { |
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162 free(this); |
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163 } |
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164 return(0); |
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165 } |
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166 memset(this->hidden, 0, (sizeof *this->hidden)); |
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167 |
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168 /* Set the function pointers */ |
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169 this->OpenAudio = Mint_OpenAudio; |
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170 this->CloseAudio = Mint_CloseAudio; |
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171 this->LockAudio = Mint_LockAudio; |
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172 this->UnlockAudio = Mint_UnlockAudio; |
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173 this->free = Audio_DeleteDevice; |
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174 |
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175 return this; |
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176 } |
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177 |
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178 AudioBootStrap MINTAUDIO_MCSN_bootstrap = { |
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179 MINT_AUDIO_DRIVER_NAME, "MiNT MCSN audio driver", |
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180 Audio_Available, Audio_CreateDevice |
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181 }; |
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182 |
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183 static void Mint_LockAudio(_THIS) |
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184 { |
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185 /* Stop replay */ |
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186 Buffoper(0); |
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187 } |
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188 |
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189 static void Mint_UnlockAudio(_THIS) |
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190 { |
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191 /* Restart replay */ |
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192 Buffoper(SB_PLA_ENA|SB_PLA_RPT); |
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193 } |
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194 |
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195 static void Mint_CloseAudio(_THIS) |
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196 { |
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197 /* Stop replay */ |
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198 SDL_MintAudio_WaitThread(); |
644
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199 Buffoper(0); |
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200 |
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201 if (!SDL_MintAudio_mint_present) { |
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202 /* Uninstall interrupt */ |
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203 Jdisint(MFP_DMASOUND); |
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204 } |
644
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205 |
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206 /* Wait if currently playing sound */ |
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207 while (SDL_MintAudio_mutex != 0) { |
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208 } |
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209 |
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210 /* Clear buffers */ |
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211 if (SDL_MintAudio_audiobuf[0]) { |
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212 Mfree(SDL_MintAudio_audiobuf[0]); |
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213 SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL; |
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214 } |
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215 |
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216 /* Unlock sound system */ |
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217 Unlocksnd(); |
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218 } |
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219 |
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220 static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec) |
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221 { |
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222 int i; |
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223 unsigned long masterclock, masterprediv; |
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224 |
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225 DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ",spec->format & 0x00ff)); |
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226 DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0))); |
704 | 227 DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0))); |
644
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228 DEBUG_PRINT(("channels=%d, ", spec->channels)); |
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229 DEBUG_PRINT(("freq=%d\n", spec->freq)); |
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230 |
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231 /* Check formats available */ |
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232 MINTAUDIO_freqcount=0; |
644
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233 switch(cookie_mcsn->play) { |
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234 case MCSN_ST: |
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235 spec->channels=1; |
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236 spec->format=8; /* FIXME: is it signed or unsigned ? */ |
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237 SDL_MintAudio_AddFrequency(this, 12500, 0, 0, -1); |
644
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238 break; |
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239 case MCSN_TT: /* Also STE, Mega STE */ |
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240 spec->format=AUDIO_S8; |
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241 masterclock=MASTERCLOCK_STE; |
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242 masterprediv=MASTERPREDIV_STE; |
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243 if ((cookie_mch>>16)==MCH_TT) { |
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244 masterclock=MASTERCLOCK_TT; |
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245 masterprediv=MASTERPREDIV_TT; |
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246 } |
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247 for (i=0; i<4; i++) { |
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248 SDL_MintAudio_AddFrequency(this, masterclock/(masterprediv*(1<<i)), |
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249 masterclock, 3-i, -1); |
644
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250 } |
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251 break; |
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252 case MCSN_FALCON: /* Also Mac */ |
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253 for (i=1; i<12; i++) { |
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254 /* Remove unusable Falcon codec predivisors */ |
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255 if ((i==6) || (i==8) || (i==10)) { |
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256 continue; |
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257 } |
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258 SDL_MintAudio_AddFrequency(this, MASTERCLOCK_FALCON1/(MASTERPREDIV_FALCON*(i+1)), |
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259 CLK25M, i+1, -1); |
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260 } |
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261 if (cookie_mcsn->res1 != 0) { |
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262 for (i=1; i<4; i++) { |
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263 SDL_MintAudio_AddFrequency(this, (cookie_mcsn->res1)/(MASTERPREDIV_FALCON*(1<<i)), |
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264 CLKEXT, (1<<i)-1, -1); |
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265 } |
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266 } |
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267 spec->format |= 0x8000; /* Audio is always signed */ |
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268 if ((spec->format & 0x00ff)==16) { |
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269 spec->format |= 0x1000; /* Audio is always big endian */ |
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270 spec->channels=2; /* 16 bits always stereo */ |
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271 } |
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272 break; |
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273 } |
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274 |
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275 #if 1 |
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276 for (i=0; i<MINTAUDIO_freqcount; i++) { |
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277 DEBUG_PRINT((DEBUG_NAME "freq %d: %lu Hz, clock %lu, prediv %d\n", |
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278 i, MINTAUDIO_frequencies[i].frequency, MINTAUDIO_frequencies[i].masterclock, |
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279 MINTAUDIO_frequencies[i].predivisor |
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280 )); |
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281 } |
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282 #endif |
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283 |
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284 MINTAUDIO_numfreq=SDL_MintAudio_SearchFrequency(this, spec->freq); |
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285 spec->freq=MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency; |
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286 |
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287 DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ",spec->format & 0x00ff)); |
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288 DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0))); |
704 | 289 DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0))); |
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290 DEBUG_PRINT(("channels=%d, ", spec->channels)); |
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291 DEBUG_PRINT(("freq=%d\n", spec->freq)); |
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292 |
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293 return 0; |
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294 } |
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295 |
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296 static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec) |
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297 { |
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298 int channels_mode, prediv, dmaclock; |
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299 void *buffer; |
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300 |
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301 /* Stop currently playing sound */ |
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302 SDL_MintAudio_quit_thread = SDL_FALSE; |
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303 SDL_MintAudio_thread_finished = SDL_TRUE; |
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304 SDL_MintAudio_WaitThread(); |
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305 Buffoper(0); |
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306 |
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307 /* Set replay tracks */ |
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308 Settracks(0,0); |
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309 Setmontracks(0); |
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310 |
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311 /* Select replay format */ |
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312 channels_mode=STEREO16; |
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313 switch (spec->format & 0xff) { |
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314 case 8: |
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315 if (spec->channels==2) { |
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316 channels_mode=STEREO8; |
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317 } else { |
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318 channels_mode=MONO8; |
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319 } |
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320 break; |
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321 } |
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322 if (Setmode(channels_mode)<0) { |
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323 DEBUG_PRINT((DEBUG_NAME "Setmode() failed\n")); |
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324 } |
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325 |
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326 dmaclock = MINTAUDIO_frequencies[MINTAUDIO_numfreq].masterclock; |
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327 prediv = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor; |
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328 switch(cookie_mcsn->play) { |
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329 case MCSN_TT: |
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330 Devconnect(DMAPLAY, DAC, CLK25M, CLKOLD, 1); |
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331 Soundcmd(SETPRESCALE, prediv); |
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332 DEBUG_PRINT((DEBUG_NAME "STE/TT prescaler selected\n")); |
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333 break; |
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334 case MCSN_FALCON: |
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335 Devconnect(DMAPLAY, DAC, dmaclock, prediv, 1); |
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336 DEBUG_PRINT((DEBUG_NAME "Falcon prescaler selected\n")); |
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337 break; |
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338 } |
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339 |
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340 /* Set buffer */ |
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341 buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf]; |
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342 if (Setbuffer(0, buffer, buffer + spec->size)<0) { |
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343 DEBUG_PRINT((DEBUG_NAME "Setbuffer() failed\n")); |
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344 } |
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345 |
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346 if (SDL_MintAudio_mint_present) { |
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347 SDL_MintAudio_thread_pid = tfork(SDL_MintAudio_Thread, 0); |
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348 } else { |
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349 /* Install interrupt */ |
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350 Jdisint(MFP_DMASOUND); |
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351 Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_XbiosInterrupt); |
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352 Jenabint(MFP_DMASOUND); |
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353 |
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354 if (Setinterrupt(SI_TIMERA, SI_PLAY)<0) { |
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355 DEBUG_PRINT((DEBUG_NAME "Setinterrupt() failed\n")); |
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356 } |
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357 } |
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358 |
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359 /* Go */ |
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360 Buffoper(SB_PLA_ENA|SB_PLA_RPT); |
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361 DEBUG_PRINT((DEBUG_NAME "hardware initialized\n")); |
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362 } |
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363 |
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364 static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec) |
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365 { |
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366 /* Lock sound system */ |
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367 if (Locksnd()!=1) { |
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368 SDL_SetError("Mint_OpenAudio: Audio system already in use"); |
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369 return(-1); |
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370 } |
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371 |
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372 SDL_MintAudio_device = this; |
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373 |
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374 /* Check audio capabilities */ |
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375 if (Mint_CheckAudio(this, spec)==-1) { |
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376 return -1; |
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377 } |
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378 |
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379 SDL_CalculateAudioSpec(spec); |
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380 |
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381 /* Allocate memory for audio buffers in DMA-able RAM */ |
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382 DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", spec->size)); |
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383 |
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384 SDL_MintAudio_audiobuf[0] = Atari_SysMalloc(spec->size *2, MX_STRAM); |
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385 if (SDL_MintAudio_audiobuf[0]==NULL) { |
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386 SDL_SetError("MINT_OpenAudio: Not enough memory for audio buffer"); |
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387 return (-1); |
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388 } |
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389 SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + spec->size ; |
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390 SDL_MintAudio_numbuf=0; |
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391 memset(SDL_MintAudio_audiobuf[0], spec->silence, spec->size *2); |
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392 SDL_MintAudio_audiosize = spec->size; |
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393 SDL_MintAudio_mutex = 0; |
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394 |
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395 DEBUG_PRINT((DEBUG_NAME "buffer 0 at 0x%08x\n", SDL_MintAudio_audiobuf[0])); |
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396 DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1])); |
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397 |
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398 /* Setup audio hardware */ |
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399 Mint_InitAudio(this, spec); |
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400 |
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401 return(1); /* We don't use SDL threaded audio */ |
644
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402 } |