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annotate src/audio/mint/SDL_mintaudio.h @ 2931:e705adf6f3dc

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Date: Mon, 29 Dec 2008 23:29:52 +0100 From: Couriersud Subject: SDL1.3: Some X11 diffs The attached diff fixes the following issues in the X11 backend: a) When calling resize, actually a move was performed. This has been corrected. b) DisplayHeight and DisplayWidth do not return up-to-date information after a modeswitch using the xrandr code, which I enabled in x11_modes.c Height and width are now queried from the root window and all occurrences of DisplayHeight and DisplayWidth changed.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 30 Dec 2008 17:09:42 +0000
parents 99210400e8b9
children
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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
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27 Patrice Mandin
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28 */
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29
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30 #ifndef _SDL_mintaudio_h
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31 #define _SDL_mintaudio_h
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32
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33 #include "../SDL_sysaudio.h"
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34 #include "SDL_mintaudio_stfa.h"
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35
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36 /* Hidden "this" pointer for the audio functions */
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37 #define _THIS SDL_AudioDevice *this
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38
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39 /* 16 predivisors with 3 clocks max. */
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40 #define MINTAUDIO_maxfreqs (16*3)
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41
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42 typedef struct
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43 {
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44 Uint32 frequency;
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45 Uint32 masterclock;
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46 Uint32 predivisor;
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47 int gpio_bits; /* in case of external clock */
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48 } mint_frequency_t;
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49
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50 struct SDL_PrivateAudioData
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51 {
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52 mint_frequency_t frequencies[MINTAUDIO_maxfreqs];
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53 int freq_count; /* Number of frequencies in the array */
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54 int numfreq; /* Number of selected frequency */
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55 };
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56
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57 /* Old variable names */
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58
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59 #define MINTAUDIO_frequencies (this->hidden->frequencies)
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60 #define MINTAUDIO_freqcount (this->hidden->freq_count)
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61 #define MINTAUDIO_numfreq (this->hidden->numfreq)
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62
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63 /* _MCH cookie (values>>16) */
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64 enum
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65 {
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66 MCH_ST = 0,
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67 MCH_STE,
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68 MCH_TT,
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69 MCH_F30,
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70 MCH_CLONE,
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71 MCH_ARANYM
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72 };
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73
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74 /* Master clocks for replay frequencies */
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75 #define MASTERCLOCK_STE 8010666 /* Not sure of this one */
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76 #define MASTERCLOCK_TT 16107953 /* Not sure of this one */
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77 #define MASTERCLOCK_FALCON1 25175000
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78 #define MASTERCLOCK_FALCON2 32000000 /* Only usable for DSP56K */
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79 #define MASTERCLOCK_FALCONEXT -1 /* Clock on DSP56K port, unknown */
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80 #define MASTERCLOCK_44K 22579200 /* Standard clock for 44.1 Khz */
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81 #define MASTERCLOCK_48K 24576000 /* Standard clock for 48 Khz */
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82
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83 /* Master clock predivisors */
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84 #define MASTERPREDIV_STE 160
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85 #define MASTERPREDIV_TT 320
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86 #define MASTERPREDIV_FALCON 256
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87 #define MASTERPREDIV_MILAN 256
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88
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89 /* MFP 68901 interrupt sources */
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90 enum
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91 {
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92 MFP_PARALLEL = 0,
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93 MFP_DCD,
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94 MFP_CTS,
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95 MFP_BITBLT,
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96 MFP_TIMERD,
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97 MFP_BAUDRATE = MFP_TIMERD,
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98 MFP_TIMERC,
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99 MFP_200HZ = MFP_TIMERC,
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100 MFP_ACIA,
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101 MFP_DISK,
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102 MFP_TIMERB,
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103 MFP_HBLANK = MFP_TIMERB,
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104 MFP_TERR,
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105 MFP_TBE,
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106 MFP_RERR,
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107 MFP_RBF,
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108 MFP_TIMERA,
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109 MFP_DMASOUND = MFP_TIMERA,
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110 MFP_RING,
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111 MFP_MONODETECT
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112 };
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113
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114 /* Xbtimer() timers */
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115 enum
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116 {
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117 XB_TIMERA = 0,
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118 XB_TIMERB,
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119 XB_TIMERC,
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120 XB_TIMERD
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121 };
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122
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123 /* Variables */
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124 extern SDL_AudioDevice *SDL_MintAudio_device;
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125 extern Uint8 *SDL_MintAudio_audiobuf[2]; /* Pointers to buffers */
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126 extern unsigned long SDL_MintAudio_audiosize; /* Length of audio buffer=spec->size */
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127 extern volatile unsigned short SDL_MintAudio_numbuf; /* Buffer to play */
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128 extern volatile unsigned short SDL_MintAudio_mutex;
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129 extern cookie_stfa_t *SDL_MintAudio_stfa;
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130 extern volatile unsigned long SDL_MintAudio_clocktics;
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131 extern unsigned short SDL_MintAudio_hasfpu; /* To preserve fpu registers if needed */
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132
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133 /* MiNT thread variables */
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134 extern SDL_bool SDL_MintAudio_mint_present;
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135 extern SDL_bool SDL_MintAudio_quit_thread;
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136 extern SDL_bool SDL_MintAudio_thread_finished;
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137 extern long SDL_MintAudio_thread_pid;
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138
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139 /* Functions */
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140 void SDL_MintAudio_Callback(void);
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141 void SDL_MintAudio_AddFrequency(_THIS, Uint32 frequency, Uint32 clock,
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142 Uint32 prediv, int gpio_bits);
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143 int SDL_MintAudio_SearchFrequency(_THIS, int desired_freq);
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144 void SDL_MintAudio_CheckFpu(void);
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145
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146 /* MiNT thread functions */
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147 int SDL_MintAudio_Thread(long param);
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148 void SDL_MintAudio_WaitThread(void);
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149
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150 /* ASM interrupt functions */
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151 void SDL_MintAudio_GsxbInterrupt(void);
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152 void SDL_MintAudio_EmptyGsxbInterrupt(void);
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153 void SDL_MintAudio_XbiosInterruptMeasureClock(void);
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154 void SDL_MintAudio_XbiosInterrupt(void);
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155 void SDL_MintAudio_Dma8Interrupt(void);
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156 void SDL_MintAudio_StfaInterrupt(void);
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157
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158 #endif /* _SDL_mintaudio_h */
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159 /* vi: set ts=4 sw=4 expandtab: */