Mercurial > sdl-ios-xcode
annotate src/audio/dc/SDL_dcaudio.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 | b8d311d90021 |
children | c9b51268668f |
rev | line source |
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509
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1 /* |
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2 SDL - Simple DirectMedia Layer |
769
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509
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3 Copyright (C) 1997-2004 Sam Lantinga |
509
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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 BERO <bero@geocities.co.jp> |
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20 based on SDL_diskaudio.c by Sam Lantinga <slouken@libsdl.org> |
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21 |
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22 */ |
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23 |
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24 #ifdef SAVE_RCSID |
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25 static char rcsid = |
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26 "@(#) $Id$"; |
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27 #endif |
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28 |
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29 /* Output dreamcast aica */ |
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30 |
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31 #include <stdlib.h> |
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32 #include <stdio.h> |
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33 #include <string.h> |
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34 #include <errno.h> |
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35 #include <unistd.h> |
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36 #include <sys/stat.h> |
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37 #include <sys/types.h> |
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38 #include <sys/stat.h> |
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39 #include <fcntl.h> |
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40 |
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41 |
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42 #include "SDL_audio.h" |
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43 #include "SDL_error.h" |
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44 #include "SDL_audiomem.h" |
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45 #include "SDL_audio_c.h" |
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46 #include "SDL_timer.h" |
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47 #include "SDL_audiodev_c.h" |
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48 #include "SDL_dcaudio.h" |
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49 |
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50 #include "aica.h" |
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51 #include <dc/spu.h> |
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52 |
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53 /* Audio driver functions */ |
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54 static int DCAUD_OpenAudio(_THIS, SDL_AudioSpec *spec); |
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55 static void DCAUD_WaitAudio(_THIS); |
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56 static void DCAUD_PlayAudio(_THIS); |
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57 static Uint8 *DCAUD_GetAudioBuf(_THIS); |
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58 static void DCAUD_CloseAudio(_THIS); |
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59 |
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60 /* Audio driver bootstrap functions */ |
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61 static int DCAUD_Available(void) |
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62 { |
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63 return 1; |
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64 } |
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65 |
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66 static void DCAUD_DeleteDevice(SDL_AudioDevice *device) |
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67 { |
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68 free(device->hidden); |
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69 free(device); |
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70 } |
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71 |
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72 static SDL_AudioDevice *DCAUD_CreateDevice(int devindex) |
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73 { |
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74 SDL_AudioDevice *this; |
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75 |
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76 /* Initialize all variables that we clean on shutdown */ |
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77 this = (SDL_AudioDevice *)malloc(sizeof(SDL_AudioDevice)); |
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78 if ( this ) { |
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79 memset(this, 0, (sizeof *this)); |
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80 this->hidden = (struct SDL_PrivateAudioData *) |
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81 malloc((sizeof *this->hidden)); |
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82 } |
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83 if ( (this == NULL) || (this->hidden == NULL) ) { |
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84 SDL_OutOfMemory(); |
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85 if ( this ) { |
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86 free(this); |
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87 } |
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88 return(0); |
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89 } |
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90 memset(this->hidden, 0, (sizeof *this->hidden)); |
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91 |
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92 /* Set the function pointers */ |
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93 this->OpenAudio = DCAUD_OpenAudio; |
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94 this->WaitAudio = DCAUD_WaitAudio; |
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95 this->PlayAudio = DCAUD_PlayAudio; |
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96 this->GetAudioBuf = DCAUD_GetAudioBuf; |
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97 this->CloseAudio = DCAUD_CloseAudio; |
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98 |
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99 this->free = DCAUD_DeleteDevice; |
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100 |
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101 spu_init(); |
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102 |
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103 return this; |
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104 } |
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105 |
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106 AudioBootStrap DCAUD_bootstrap = { |
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107 "dcaudio", "Dreamcast AICA audio", |
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108 DCAUD_Available, DCAUD_CreateDevice |
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109 }; |
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110 |
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111 /* This function waits until it is possible to write a full sound buffer */ |
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112 static void DCAUD_WaitAudio(_THIS) |
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113 { |
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114 if (this->hidden->playing) { |
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115 /* wait */ |
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116 while(aica_get_pos(0)/this->spec.samples == this->hidden->nextbuf) { |
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117 thd_pass(); |
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118 } |
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119 } |
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120 } |
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121 |
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122 #define SPU_RAM_BASE 0xa0800000 |
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123 |
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124 static void spu_memload_stereo8(int leftpos,int rightpos,void *src0,size_t size) |
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125 { |
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126 uint8 *src = src0; |
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127 uint32 *left = (uint32*)(leftpos +SPU_RAM_BASE); |
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128 uint32 *right = (uint32*)(rightpos+SPU_RAM_BASE); |
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129 size = (size+7)/8; |
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130 while(size--) { |
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131 unsigned lval,rval; |
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132 lval = *src++; |
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133 rval = *src++; |
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134 lval|= (*src++)<<8; |
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135 rval|= (*src++)<<8; |
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136 lval|= (*src++)<<16; |
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137 rval|= (*src++)<<16; |
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138 lval|= (*src++)<<24; |
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139 rval|= (*src++)<<24; |
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140 g2_write_32(left++,lval); |
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141 g2_write_32(right++,rval); |
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142 g2_fifo_wait(); |
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143 } |
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144 } |
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145 |
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146 static void spu_memload_stereo16(int leftpos,int rightpos,void *src0,size_t size) |
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147 { |
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148 uint16 *src = src0; |
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149 uint32 *left = (uint32*)(leftpos +SPU_RAM_BASE); |
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150 uint32 *right = (uint32*)(rightpos+SPU_RAM_BASE); |
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151 size = (size+7)/8; |
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152 while(size--) { |
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153 unsigned lval,rval; |
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154 lval = *src++; |
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155 rval = *src++; |
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156 lval|= (*src++)<<16; |
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157 rval|= (*src++)<<16; |
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158 g2_write_32(left++,lval); |
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159 g2_write_32(right++,rval); |
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160 g2_fifo_wait(); |
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161 } |
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162 } |
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163 |
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164 static void DCAUD_PlayAudio(_THIS) |
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165 { |
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166 SDL_AudioSpec *spec = &this->spec; |
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167 unsigned int offset; |
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168 |
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169 if (this->hidden->playing) { |
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170 /* wait */ |
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171 while(aica_get_pos(0)/spec->samples == this->hidden->nextbuf) { |
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172 thd_pass(); |
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173 } |
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174 } |
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175 |
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176 offset = this->hidden->nextbuf*spec->size; |
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177 this->hidden->nextbuf^=1; |
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178 /* Write the audio data, checking for EAGAIN on broken audio drivers */ |
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179 if (spec->channels==1) { |
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180 spu_memload(this->hidden->leftpos+offset,this->hidden->mixbuf,this->hidden->mixlen); |
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181 } else { |
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182 offset/=2; |
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183 if ((this->spec.format&255)==8) { |
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184 spu_memload_stereo8(this->hidden->leftpos+offset,this->hidden->rightpos+offset,this->hidden->mixbuf,this->hidden->mixlen); |
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185 } else { |
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186 spu_memload_stereo16(this->hidden->leftpos+offset,this->hidden->rightpos+offset,this->hidden->mixbuf,this->hidden->mixlen); |
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187 } |
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188 } |
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189 |
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190 if (!this->hidden->playing) { |
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191 int mode; |
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192 this->hidden->playing = 1; |
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193 mode = (spec->format==AUDIO_S8)?SM_8BIT:SM_16BIT; |
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194 if (spec->channels==1) { |
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195 aica_play(0,mode,this->hidden->leftpos,0,spec->samples*2,spec->freq,255,128,1); |
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196 } else { |
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197 aica_play(0,mode,this->hidden->leftpos ,0,spec->samples*2,spec->freq,255,0,1); |
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198 aica_play(1,mode,this->hidden->rightpos,0,spec->samples*2,spec->freq,255,255,1); |
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199 } |
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200 } |
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201 } |
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202 |
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203 static Uint8 *DCAUD_GetAudioBuf(_THIS) |
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204 { |
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205 return(this->hidden->mixbuf); |
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206 } |
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207 |
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208 static void DCAUD_CloseAudio(_THIS) |
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209 { |
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210 aica_stop(0); |
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211 if (this->spec.channels==2) aica_stop(1); |
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212 if ( this->hidden->mixbuf != NULL ) { |
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213 SDL_FreeAudioMem(this->hidden->mixbuf); |
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214 this->hidden->mixbuf = NULL; |
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215 } |
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216 } |
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217 |
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218 static int DCAUD_OpenAudio(_THIS, SDL_AudioSpec *spec) |
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219 { |
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220 switch(spec->format&0xff) { |
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221 case 8: spec->format = AUDIO_S8; break; |
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222 case 16: spec->format = AUDIO_S16LSB; break; |
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223 default: |
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224 SDL_SetError("Unsupported audio format"); |
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225 return(-1); |
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226 } |
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227 |
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228 /* Update the fragment size as size in bytes */ |
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229 SDL_CalculateAudioSpec(spec); |
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230 |
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231 /* Allocate mixing buffer */ |
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232 this->hidden->mixlen = spec->size; |
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233 this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen); |
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234 if ( this->hidden->mixbuf == NULL ) { |
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235 return(-1); |
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236 } |
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237 memset(this->hidden->mixbuf, spec->silence, spec->size); |
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238 this->hidden->leftpos = 0x11000; |
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239 this->hidden->rightpos = 0x11000+spec->size; |
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240 this->hidden->playing = 0; |
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241 this->hidden->nextbuf = 0; |
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242 |
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Added initial support for Dreamcast (thanks HERO!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
243 /* We're ready to rock and roll. :-) */ |
dad72daf44b3
Added initial support for Dreamcast (thanks HERO!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
244 return(0); |
dad72daf44b3
Added initial support for Dreamcast (thanks HERO!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
245 } |