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annotate src/audio/mint/SDL_mintaudio_stfa.c @ 1192:54aa9aa32327

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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>
date Mon, 28 Nov 2005 13:58:26 +0000
parents 856f76a099c7
children 3692456e7b0f
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1 /*
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2 SDL - Simple DirectMedia Layer
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b8d311d90021 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
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23 /*
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24 MiNT audio driver
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25 using XBIOS functions (STFA 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
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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_endian.h"
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40 #include "SDL_audio.h"
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41 #include "SDL_audio_c.h"
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42 #include "SDL_audiomem.h"
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43 #include "SDL_sysaudio.h"
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44
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45 #include "SDL_atarimxalloc_c.h"
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46
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47 #include "SDL_mintaudio.h"
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48 #include "SDL_mintaudio_stfa.h"
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49
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50 /*--- Defines ---*/
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51
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52 #define MINT_AUDIO_DRIVER_NAME "mint_stfa"
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53
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54 /* Debug print info */
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55 #define DEBUG_NAME "audio:stfa: "
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56 #if 0
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57 #define DEBUG_PRINT(what) \
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58 { \
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59 printf what; \
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60 }
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61 #else
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62 #define DEBUG_PRINT(what)
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63 #endif
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64
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65 /*--- Static variables ---*/
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66
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67 static unsigned long cookie_snd, cookie_mch;
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68 static cookie_stfa_t *cookie_stfa;
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69
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70 static const int freqs[16]={
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71 4995, 6269, 7493, 8192,
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72 9830, 10971, 12538, 14985,
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73 16384, 19819, 21943, 24576,
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74 30720, 32336, 43885, 49152
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75 };
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76
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77 /*--- Audio driver functions ---*/
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78
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79 static void Mint_CloseAudio(_THIS);
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80 static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec);
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81 static void Mint_LockAudio(_THIS);
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82 static void Mint_UnlockAudio(_THIS);
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83
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84 /* To check/init hardware audio */
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85 static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec);
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86 static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec);
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87
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88 /*--- Audio driver bootstrap functions ---*/
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89
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90 static int Audio_Available(void)
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91 {
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92 const char *envr = getenv("SDL_AUDIODRIVER");
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93
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94 /* Check if user asked a different audio driver */
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95 if ((envr) && (strcmp(envr, MINT_AUDIO_DRIVER_NAME)!=0)) {
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96 DEBUG_PRINT((DEBUG_NAME "user asked a different audio driver\n"));
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97 return(0);
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98 }
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99
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100 /* Cookie _MCH present ? if not, assume ST machine */
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101 if (Getcookie(C__MCH, &cookie_mch) == C_NOTFOUND) {
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102 cookie_mch = MCH_ST;
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103 }
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104
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105 /* Cookie _SND present ? if not, assume ST machine */
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106 if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) {
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107 cookie_snd = SND_PSG;
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108 }
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109
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110 /* Cookie STFA present ? */
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111 if (Getcookie(C_STFA, (long *) &cookie_stfa) != C_FOUND) {
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112 DEBUG_PRINT((DEBUG_NAME "no STFA audio\n"));
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113 return(0);
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114 }
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115
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116 SDL_MintAudio_stfa = cookie_stfa;
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117
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118 DEBUG_PRINT((DEBUG_NAME "STFA audio available!\n"));
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119 return(1);
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120 }
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121
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122 static void Audio_DeleteDevice(SDL_AudioDevice *device)
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123 {
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124 free(device->hidden);
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125 free(device);
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126 }
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127
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128 static SDL_AudioDevice *Audio_CreateDevice(int devindex)
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129 {
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130 SDL_AudioDevice *this;
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131
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132 /* Initialize all variables that we clean on shutdown */
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133 this = (SDL_AudioDevice *)malloc(sizeof(SDL_AudioDevice));
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134 if ( this ) {
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135 memset(this, 0, (sizeof *this));
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136 this->hidden = (struct SDL_PrivateAudioData *)
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137 malloc((sizeof *this->hidden));
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138 }
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139 if ( (this == NULL) || (this->hidden == NULL) ) {
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140 SDL_OutOfMemory();
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141 if ( this ) {
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142 free(this);
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143 }
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144 return(0);
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145 }
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146 memset(this->hidden, 0, (sizeof *this->hidden));
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147
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148 /* Set the function pointers */
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149 this->OpenAudio = Mint_OpenAudio;
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150 this->CloseAudio = Mint_CloseAudio;
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151 this->LockAudio = Mint_LockAudio;
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152 this->UnlockAudio = Mint_UnlockAudio;
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153 this->free = Audio_DeleteDevice;
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154
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155 return this;
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156 }
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157
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158 AudioBootStrap MINTAUDIO_STFA_bootstrap = {
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159 MINT_AUDIO_DRIVER_NAME, "MiNT STFA audio driver",
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160 Audio_Available, Audio_CreateDevice
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161 };
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162
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163 static void Mint_LockAudio(_THIS)
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164 {
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165 void *oldpile;
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166
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167 /* Stop replay */
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168 oldpile=(void *)Super(0);
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169 cookie_stfa->sound_enable=STFA_PLAY_DISABLE;
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170 Super(oldpile);
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171 }
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172
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173 static void Mint_UnlockAudio(_THIS)
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174 {
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175 void *oldpile;
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176
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177 /* Restart replay */
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178 oldpile=(void *)Super(0);
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179 cookie_stfa->sound_enable=STFA_PLAY_ENABLE|STFA_PLAY_REPEAT;
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180 Super(oldpile);
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181 }
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182
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183 static void Mint_CloseAudio(_THIS)
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184 {
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185 void *oldpile;
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186
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187 /* Stop replay */
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188 oldpile=(void *)Super(0);
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189 cookie_stfa->sound_enable=STFA_PLAY_DISABLE;
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190 Super(oldpile);
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191
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192 /* Wait if currently playing sound */
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193 while (SDL_MintAudio_mutex != 0) {
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194 }
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195
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196 /* Clear buffers */
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197 if (SDL_MintAudio_audiobuf[0]) {
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198 Mfree(SDL_MintAudio_audiobuf[0]);
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199 SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL;
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200 }
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201 }
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202
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203 static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec)
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204 {
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205 int i;
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206
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207 DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ",spec->format & 0x00ff));
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208 DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0)));
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diff changeset
209 DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0)));
644
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210 DEBUG_PRINT(("channels=%d, ", spec->channels));
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211 DEBUG_PRINT(("freq=%d\n", spec->freq));
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212
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213 /* Check formats available */
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diff changeset
214 MINTAUDIO_freqcount=0;
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diff changeset
215 for (i=0;i<16;i++) {
1107
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
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diff changeset
216 SDL_MintAudio_AddFrequency(this, freqs[i], 0, i, -1);
644
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217 }
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diff changeset
218
961
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diff changeset
219 #if 1
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220 for (i=0; i<MINTAUDIO_freqcount; i++) {
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diff changeset
221 DEBUG_PRINT((DEBUG_NAME "freq %d: %lu Hz, clock %lu, prediv %d\n",
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diff changeset
222 i, MINTAUDIO_frequencies[i].frequency, MINTAUDIO_frequencies[i].masterclock,
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diff changeset
223 MINTAUDIO_frequencies[i].predivisor
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224 ));
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225 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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226 #endif
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227
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228 MINTAUDIO_numfreq=SDL_MintAudio_SearchFrequency(this, spec->freq);
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229 spec->freq=MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency;
644
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230
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diff changeset
231 DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ",spec->format & 0x00ff));
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232 DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0)));
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diff changeset
233 DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0)));
644
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234 DEBUG_PRINT(("channels=%d, ", spec->channels));
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235 DEBUG_PRINT(("freq=%d\n", spec->freq));
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236
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237 return 0;
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238 }
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239
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240 static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec)
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241 {
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242 void *buffer;
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243 void *oldpile;
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244
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245 buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
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246
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247 oldpile=(void *)Super(0);
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248
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249 /* Stop replay */
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250 cookie_stfa->sound_enable=STFA_PLAY_DISABLE;
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251
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252 /* Select replay format */
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253 cookie_stfa->sound_control = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor;
644
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254 if ((spec->format & 0xff)==8) {
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255 cookie_stfa->sound_control |= STFA_FORMAT_8BIT;
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diff changeset
256 } else {
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257 cookie_stfa->sound_control |= STFA_FORMAT_16BIT;
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258 }
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diff changeset
259 if (spec->channels==2) {
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260 cookie_stfa->sound_control |= STFA_FORMAT_STEREO;
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diff changeset
261 } else {
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262 cookie_stfa->sound_control |= STFA_FORMAT_MONO;
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diff changeset
263 }
704
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diff changeset
264 if ((spec->format & 0x8000)!=0) {
644
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diff changeset
265 cookie_stfa->sound_control |= STFA_FORMAT_SIGNED;
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diff changeset
266 } else {
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267 cookie_stfa->sound_control |= STFA_FORMAT_UNSIGNED;
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268 }
704
c4803992e09c Small bugfixes
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diff changeset
269 if ((spec->format & 0x1000)!=0) {
c4803992e09c Small bugfixes
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diff changeset
270 cookie_stfa->sound_control |= STFA_FORMAT_BIGENDIAN;
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diff changeset
271 } else {
644
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272 cookie_stfa->sound_control |= STFA_FORMAT_LITENDIAN;
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273 }
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274
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275 /* Set buffer */
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276 cookie_stfa->sound_start = (unsigned long) buffer;
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277 cookie_stfa->sound_end = (unsigned long) (buffer + spec->size);
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278
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279 /* Set interrupt */
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280 cookie_stfa->stfa_it = SDL_MintAudio_StfaInterrupt;
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281
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282 /* Restart replay */
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283 cookie_stfa->sound_enable=STFA_PLAY_ENABLE|STFA_PLAY_REPEAT;
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284
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285 Super(oldpile);
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286
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287 DEBUG_PRINT((DEBUG_NAME "hardware initialized\n"));
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288 }
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289
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290 static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec)
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291 {
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292 SDL_MintAudio_device = this;
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293
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294 /* Check audio capabilities */
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295 if (Mint_CheckAudio(this, spec)==-1) {
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296 return -1;
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297 }
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298
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299 SDL_CalculateAudioSpec(spec);
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300
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301 /* Allocate memory for audio buffers in DMA-able RAM */
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302 DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", spec->size));
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303
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304 SDL_MintAudio_audiobuf[0] = Atari_SysMalloc(spec->size *2, MX_STRAM);
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305 if (SDL_MintAudio_audiobuf[0]==NULL) {
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306 SDL_SetError("MINT_OpenAudio: Not enough memory for audio buffer");
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307 return (-1);
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308 }
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309 SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + spec->size ;
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310 SDL_MintAudio_numbuf=0;
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311 memset(SDL_MintAudio_audiobuf[0], spec->silence, spec->size *2);
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312 SDL_MintAudio_audiosize = spec->size;
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313 SDL_MintAudio_mutex = 0;
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314
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315 DEBUG_PRINT((DEBUG_NAME "buffer 0 at 0x%08x\n", SDL_MintAudio_audiobuf[0]));
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316 DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1]));
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317
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318 /* Setup audio hardware */
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319 Mint_InitAudio(this, spec);
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320
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321 return(1); /* We don't use threaded audio */
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322 }