Mercurial > sdl-ios-xcode

annotate src/audio/mint/SDL_mintaudio_xbios.c @ 2660:a55543cef395 gsoc2008_audio_resampling

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Cleaned up some bugs, but the FIR filter is still distorting.
author Aaron Wishnick <schnarf@gmail.com>
date Wed, 02 Jul 2008 07:25:02 +0000
parents 29e07f91bc1f
children 99210400e8b9
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /*
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25 MiNT audio driver
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26 using XBIOS functions (Falcon)
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27
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28 Patrice Mandin, Didier Méquignon
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29 */
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30
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31 #include <unistd.h>
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32 #include <support.h>
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33
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34 /* Mint includes */
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35 #include <mint/osbind.h>
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36 #include <mint/falcon.h>
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37 #include <mint/cookie.h>
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38
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39 #include "SDL_audio.h"
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40 #include "../SDL_audio_c.h"
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41 #include "../SDL_sysaudio.h"
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42
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43 #include "../../video/ataricommon/SDL_atarimxalloc_c.h"
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44
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45 #include "SDL_mintaudio.h"
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46 #include "SDL_mintaudio_dma8.h"
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47
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48 /*--- Defines ---*/
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49
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50 #define MINT_AUDIO_DRIVER_NAME "mint_xbios"
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51
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52 /* Debug print info */
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53 #define DEBUG_NAME "audio:xbios: "
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54 #if 0
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55 #define DEBUG_PRINT(what) \
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56 { \
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57 printf what; \
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58 }
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59 #else
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60 #define DEBUG_PRINT(what)
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61 #endif
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62
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63 static unsigned long cookie_snd = 0;
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64
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65 static void
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66 MINTXBIOS_LockDevice(_THIS)
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67 {
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68 /* Stop replay */
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69 Buffoper(0);
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70 }
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71
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72 static void
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73 MINTXBIOS_UnlockDevice(_THIS)
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74 {
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75 /* Restart replay */
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76 Buffoper(SB_PLA_ENA | SB_PLA_RPT);
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77 }
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78
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79 static void
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80 MINTXBIOS_CloseDevice(_THIS)
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81 {
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82 if (this->hidden != NULL) {
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83 /* Stop replay */
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84 SDL_MintAudio_WaitThread();
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85 Buffoper(0);
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86
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87 if (!SDL_MintAudio_mint_present) {
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88 /* Uninstall interrupt */
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89 Jdisint(MFP_DMASOUND);
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90 }
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92 /* Wait if currently playing sound */
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93 while (SDL_MintAudio_mutex != 0) {
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94 }
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96 /* Clear buffers */
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97 if (SDL_MintAudio_audiobuf[0]) {
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98 Mfree(SDL_MintAudio_audiobuf[0]);
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99 SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL;
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100 }
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101
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102 /* Unlock sound system */
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103 Unlocksnd();
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104
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105 SDL_free(this->hidden);
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106 this->hidden = NULL;
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107 }
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108 }
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109
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110 /* Falcon XBIOS implementation of Devconnect() is buggy with external clock */
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111 static void
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112 Devconnect2(int src, int dst, int sclk, int pre)
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113 {
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114 static const unsigned short MASK1[3] = { 0, 0x6000, 0 };
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115 static const unsigned short MASK2[4] = { 0xFFF0, 0xFF8F, 0xF0FF, 0x0FFF };
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116 static const unsigned short INDEX1[4] = { 1, 3, 5, 7 };
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117 static const unsigned short INDEX2[4] = { 0, 2, 4, 6 };
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118 unsigned short sync_div, dev_ctrl, dest_ctrl;
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119 void *oldstack;
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120
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121 if (dst == 0) {
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122 return;
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123 }
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124
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125 oldstack = (void *) Super(0);
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126
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127 dev_ctrl = DMAAUDIO_IO.dev_ctrl;
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128 dest_ctrl = DMAAUDIO_IO.dest_ctrl;
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129 dev_ctrl &= MASK2[src];
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130
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131 if (src == ADC) {
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132 dev_ctrl |= MASK1[sclk];
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133 } else {
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134 dev_ctrl |= (INDEX1[sclk] << (src << 4));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
135 }
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136
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
137 if (dst & DMAREC) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
138 dest_ctrl &= 0xFFF0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
139 dest_ctrl |= INDEX1[src];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
140 }
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diff changeset
141
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
142 if (dst & DSPRECV) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
143 dest_ctrl &= 0xFF8F;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
144 dest_ctrl |= (INDEX1[src] << 4);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
145 }
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diff changeset
146
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
147 if (dst & EXTOUT) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
148 dest_ctrl &= 0xF0FF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
149 dest_ctrl |= (INDEX1[src] << 8);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
150 }
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diff changeset
151
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
152 if (dst & DAC) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
153 dev_ctrl &= 0x0FFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
154 dev_ctrl |= MASK1[sclk];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
155 dest_ctrl &= 0x0FFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
156 dest_ctrl |= (INDEX2[src] << 12);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
157 }
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diff changeset
158
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c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
159 sync_div = DMAAUDIO_IO.sync_div;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
160 if (sclk == CLKEXT) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
161 pre <<= 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
162 sync_div &= 0xF0FF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
163 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
164 sync_div &= 0xFFF0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
165 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
166 sync_div |= pre;
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diff changeset
167
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
168 DMAAUDIO_IO.dev_ctrl = dev_ctrl;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
169 DMAAUDIO_IO.dest_ctrl = dest_ctrl;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
170 DMAAUDIO_IO.sync_div = sync_div;
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diff changeset
171
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
172 Super(oldstack);
961
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parents: 769
diff changeset
173 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
174
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
175 static void
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
176 MINTXBIOS_CheckExternalClock(_THIS)
961
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parents: 769
diff changeset
177 {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
178 #define SIZE_BUF_CLOCK_MEASURE (44100/10)
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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179
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
180 unsigned long cookie_snd;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
181 char *buffer;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
182 int i, j;
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diff changeset
183
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
184 /* DSP present with its GPIO port ? */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
185 if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
186 return;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
187 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
188 if ((cookie_snd & SND_DSP) == 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
189 return;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
190 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
191
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
192 buffer = Atari_SysMalloc(SIZE_BUF_CLOCK_MEASURE, MX_STRAM);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
193 if (buffer == NULL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
194 DEBUG_PRINT((DEBUG_NAME "Not enough memory for the measure\n"));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
195 return;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
196 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
197 SDL_memset(buffer, 0, SIZE_BUF_CLOCK_MEASURE);
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parents: 769
diff changeset
198
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
199 Buffoper(0);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
200 Settracks(0, 0);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
201 Setmontracks(0);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
202 Setmode(MONO8);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
203 Jdisint(MFP_TIMERA);
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parents: 769
diff changeset
204
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
205 for (i = 0; i < 2; i++) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
206 Gpio(GPIO_SET, 7); /* DSP port gpio outputs */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
207 Gpio(GPIO_WRITE, 2 + i); /* 22.5792/24.576 MHz for 44.1/48KHz */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
208 Devconnect2(DMAPLAY, DAC, CLKEXT, CLK50K); /* Matrix and clock source */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
209 Setbuffer(0, buffer, buffer + SIZE_BUF_CLOCK_MEASURE); /* Set buffer */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
210 Xbtimer(XB_TIMERA, 5, 38, SDL_MintAudio_XbiosInterruptMeasureClock); /* delay mode timer A, prediv /64, 1KHz */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
211 Jenabint(MFP_TIMERA);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
212 SDL_MintAudio_clocktics = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
213 Buffoper(SB_PLA_ENA);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
214 usleep(110000);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
215
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
216 if ((Buffoper(-1) & 1) == 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
217 if (SDL_MintAudio_clocktics) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
218 unsigned long khz;
961
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parents: 769
diff changeset
219
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
220 khz =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
221 ((SIZE_BUF_CLOCK_MEASURE /
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
222 SDL_MintAudio_clocktics) + 1) & 0xFFFFFFFE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
223 DEBUG_PRINT((DEBUG_NAME "measure %d: freq=%lu KHz\n",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
224 i + 1, khz));
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parents: 769
diff changeset
225
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
226 if (khz == 44) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
227 for (j = 1; j < 4; j++) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
228 SDL_MintAudio_AddFrequency(this,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
229 MASTERCLOCK_44K
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
230 /
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
231 (MASTERPREDIV_FALCON
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
232 * (1 << j)),
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
233 MASTERCLOCK_44K,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
234 (1 << j) - 1, 2 + i);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
235 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
236 } else if (khz == 48) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
237 for (j = 1; j < 4; j++) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
238 SDL_MintAudio_AddFrequency(this,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
239 MASTERCLOCK_48K
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
240 /
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
241 (MASTERPREDIV_FALCON
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
242 * (1 << j)),
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
243 MASTERCLOCK_48K,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
244 (1 << j) - 1, 2 + i);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
245 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
246 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
247 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
248 DEBUG_PRINT((DEBUG_NAME "No measure\n"));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
249 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
250 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
251 DEBUG_PRINT((DEBUG_NAME "No SDMA clock\n"));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
252 }
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diff changeset
253
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
254 Buffoper(0); /* stop */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
255 Jdisint(MFP_TIMERA); /* Uninstall interrupt */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
256 }
961
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diff changeset
257
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
258 Mfree(buffer);
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259 }
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260
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261 static int
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262 MINTXBIOS_CheckAudio(_THIS)
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263 {
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264 int i;
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265 Uint32 extclock;
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266
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267 DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ",
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268 SDL_AUDIO_BITSIZE(this->spec.format)));
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269 DEBUG_PRINT(("float=%d, ", SDL_AUDIO_ISFLOAT(this->spec.format)));
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270 DEBUG_PRINT(("signed=%d, ", SDL_AUDIO_ISSIGNED(this->spec.format)));
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271 DEBUG_PRINT(("big endian=%d, ",
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272 SDL_AUDIO_ISBIGENDIAN(this->spec.format)));
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273 DEBUG_PRINT(("channels=%d, ", this->spec.channels));
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274 DEBUG_PRINT(("freq=%d\n", this->spec.freq));
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275
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276 this->spec.format |= SDL_AUDIO_MASK_SIGNED; /* Audio is always signed */
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277
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278 /* clamp out int32/float32 */
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279 if (SDL_AUDIO_BITSIZE(this->spec.format) >= 16) {
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280 this->spec.format = AUDIO_S16MSB; /* Audio is always big endian */
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281 this->spec.channels = 2; /* 16 bits always stereo */
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282 } else if (this->spec.channels > 2) {
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283 this->spec.channels = 2; /* no more than stereo! */
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284 }
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285
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286 MINTAUDIO_freqcount = 0;
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287
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288 /* Add external clocks if present */
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289 MINTXBIOS_CheckExternalClock(this);
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290
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291 /* Standard clocks */
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292 for (i = 1; i < 12; i++) {
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293 /* Remove unusable Falcon codec predivisors */
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294 if ((i == 6) || (i == 8) || (i == 10)) {
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295 continue;
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296 }
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297 SDL_MintAudio_AddFrequency(this,
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298 MASTERCLOCK_FALCON1 /
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299 (MASTERPREDIV_FALCON * (i + 1)),
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300 MASTERCLOCK_FALCON1, i, -1);
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301 }
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302
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303 #if 1
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304 for (i = 0; i < MINTAUDIO_freqcount; i++) {
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305 DEBUG_PRINT((DEBUG_NAME "freq %d: %lu Hz, clock %lu, prediv %d\n",
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306 i, MINTAUDIO_frequencies[i].frequency,
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307 MINTAUDIO_frequencies[i].masterclock,
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308 MINTAUDIO_frequencies[i].predivisor));
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309 }
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310 #endif
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311
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312 MINTAUDIO_numfreq = SDL_MintAudio_SearchFrequency(this, this->spec.freq);
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313 this->spec.freq = MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency;
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314
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315 DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ",
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316 SDL_AUDIO_BITSIZE(this->spec.format)));
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317 DEBUG_PRINT(("float=%d, ", SDL_AUDIO_ISFLOAT(this->spec.format)));
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318 DEBUG_PRINT(("signed=%d, ", SDL_AUDIO_ISSIGNED(this->spec.format)));
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319 DEBUG_PRINT(("big endian=%d, ",
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320 SDL_AUDIO_ISBIGENDIAN(this->spec.format)));
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321 DEBUG_PRINT(("channels=%d, ", this->spec.channels));
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322 DEBUG_PRINT(("freq=%d\n", this->spec.freq));
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323
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324 return 0;
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325 }
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326
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327 static void
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328 MINTXBIOS_InitAudio(_THIS)
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329 {
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330 int channels_mode, dmaclock, prediv;
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331 void *buffer;
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332
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333 /* Stop currently playing sound */
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334 SDL_MintAudio_quit_thread = SDL_FALSE;
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335 SDL_MintAudio_thread_finished = SDL_TRUE;
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336 SDL_MintAudio_WaitThread();
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337 Buffoper(0);
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338
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339 /* Set replay tracks */
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340 Settracks(0, 0);
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341 Setmontracks(0);
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342
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343 /* Select replay format */
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344 channels_mode = STEREO16;
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345 switch (SDL_AUDIO_BITSIZE(this->spec.format)) {
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346 case 8:
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347 if (this->spec.channels == 2) {
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348 channels_mode = STEREO8;
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349 } else {
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350 channels_mode = MONO8;
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351 }
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352 break;
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353 }
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354 if (Setmode(channels_mode) < 0) {
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355 DEBUG_PRINT((DEBUG_NAME "Setmode() failed\n"));
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356 }
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357
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358 dmaclock = MINTAUDIO_frequencies[MINTAUDIO_numfreq].masterclock;
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359 prediv = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor;
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360 if (MINTAUDIO_frequencies[MINTAUDIO_numfreq].gpio_bits != -1) {
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361 Gpio(GPIO_SET, 7); /* DSP port gpio outputs */
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362 Gpio(GPIO_WRITE, MINTAUDIO_frequencies[MINTAUDIO_numfreq].gpio_bits);
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363 Devconnect2(DMAPLAY, DAC | EXTOUT, CLKEXT, prediv);
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364 } else {
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365 Devconnect2(DMAPLAY, DAC, CLK25M, prediv);
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366 }
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367
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368 /* Set buffer */
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369 buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
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370 if (Setbuffer(0, buffer, buffer + this->spec.size) < 0) {
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371 DEBUG_PRINT((DEBUG_NAME "Setbuffer() failed\n"));
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372 }
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373
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374 if (SDL_MintAudio_mint_present) {
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375 SDL_MintAudio_thread_pid = tfork(SDL_MintAudio_Thread, 0);
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376 } else {
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377 /* Install interrupt */
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378 Jdisint(MFP_DMASOUND);
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379 /*Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_XbiosInterrupt); */
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diff changeset
380 Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_Dma8Interrupt);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
381 Jenabint(MFP_DMASOUND);
644
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diff changeset
382
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
383 if (Setinterrupt(SI_TIMERA, SI_PLAY) < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
384 DEBUG_PRINT((DEBUG_NAME "Setinterrupt() failed\n"));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
385 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
386 }
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
387
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
388 /* Go */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
389 Buffoper(SB_PLA_ENA | SB_PLA_RPT);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
390 DEBUG_PRINT((DEBUG_NAME "hardware initialized\n"));
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
391 }
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
392
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
393 static int
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
394 MINTXBIOS_OpenDevice(_THIS, const char *devname, int iscapture)
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
395 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
396 /* Lock sound system */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
397 if (Locksnd() != 1) {
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
398 SDL_SetError("MINTXBIOS_OpenAudio: Audio system already in use");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
399 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
400 }
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
401
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
402 SDL_MintAudio_device = this;
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
403
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
404 /* Check audio capabilities */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
405 if (MINTXBIOS_CheckAudio(this) == -1) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
406 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
407 }
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
408
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
409 /* Initialize all variables that we clean on shutdown */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
410 this->hidden = (struct SDL_PrivateAudioData *)
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2049
diff changeset
411 SDL_malloc((sizeof *this->hidden));
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
412 if (this->hidden == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
413 SDL_OutOfMemory();
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
414 return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
415 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
416 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
417
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
418 SDL_CalculateAudioSpec(&this->spec);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
419
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
420 /* Allocate memory for audio buffers in DMA-able RAM */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
421 DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", this->spec.size));
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
422
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2049
diff changeset
423 SDL_MintAudio_audiobuf[0] =
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2049
diff changeset
424 Atari_SysMalloc(this->spec.size * 2, MX_STRAM);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
425 if (SDL_MintAudio_audiobuf[0] == NULL) {
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
426 SDL_free(this->hidden);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
427 this->hidden = NULL;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
428 SDL_OutOfMemory();
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
429 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
430 }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
431 SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + this->spec.size;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
432 SDL_MintAudio_numbuf = 0;
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
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diff changeset
433 SDL_memset(SDL_MintAudio_audiobuf[0], this->spec.silence,
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2049
diff changeset
434 this->spec.size * 2);
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
435 SDL_MintAudio_audiosize = this->spec.size;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
436 SDL_MintAudio_mutex = 0;
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
437
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
438 DEBUG_PRINT((DEBUG_NAME "buffer 0 at 0x%08x\n",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
439 SDL_MintAudio_audiobuf[0]));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
440 DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
441 SDL_MintAudio_audiobuf[1]));
644
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Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
442
2027
d48ead2d2ba5 Save/restore FPU registers in interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 2022
diff changeset
443 SDL_MintAudio_CheckFpu();
d48ead2d2ba5 Save/restore FPU registers in interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 2022
diff changeset
444
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1412
diff changeset
445 /* Setup audio hardware */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
446 MINTXBIOS_InitAudio(this);
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
447
2060
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diff changeset
448 return 1; /* good to go. */
644
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parents:
diff changeset
449 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
450
2049
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Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
451 static int
2060
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
452 MINTXBIOS_Init(SDL_AudioDriverImpl * impl)
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
453 {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
454 unsigned long dummy = 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
455 /*SDL_MintAudio_mint_present = (Getcookie(C_MiNT, &dummy) == C_FOUND); */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
456 SDL_MintAudio_mint_present = SDL_FALSE;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
457
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
458 /* We can't use XBIOS in interrupt with Magic, don't know about thread */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
459 if (Getcookie(C_MagX, &dummy) == C_FOUND) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
460 return (0);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
461 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
462
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
463 /* Cookie _SND present ? if not, assume ST machine */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
464 if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
465 cookie_snd = SND_PSG;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
466 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
467
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
468 /* Check if we have 16 bits audio */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
469 if ((cookie_snd & SND_16BIT) == 0) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
470 SDL_SetError(DEBUG_NAME "no 16-bit sound");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
471 return (0);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
472 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
473
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
474 /* Check if audio is lockable */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
475 if (Locksnd() != 1) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
476 SDL_SetError(DEBUG_NAME "audio locked by other application");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
477 return (0);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
478 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
479
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
480 Unlocksnd();
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
481
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
482 DEBUG_PRINT((DEBUG_NAME "XBIOS audio available!\n"));
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
483
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
484 /* Set the function pointers */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
485 impl->OpenDevice = MINTXBIOS_OpenDevice;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
486 impl->CloseDevice = MINTXBIOS_CloseDevice;
2191
29e07f91bc1f Rename LockAudio,UnlockAudio to LockDevice,UnlockDevice. Also some small fixes
Patrice Mandin <patmandin@gmail.com>
parents: 2060
diff changeset
487 impl->LockDevice = MINTXBIOS_LockDevice;
29e07f91bc1f Rename LockAudio,UnlockAudio to LockDevice,UnlockDevice. Also some small fixes
Patrice Mandin <patmandin@gmail.com>
parents: 2060
diff changeset
488 impl->UnlockDevice = MINTXBIOS_UnlockDevice;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
489 impl->OnlyHasDefaultOutputDevice = 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
490 impl->ProvidesOwnCallbackThread = 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
491 impl->SkipMixerLock = 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
492
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
493 return 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
494 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
495
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
496 AudioBootStrap MINTAUDIO_XBIOS_bootstrap = {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
497 MINT_AUDIO_DRIVER_NAME, "MiNT XBIOS audio driver", MINTXBIOS_Init, 0
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
498 };
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
499
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1412
diff changeset
500 /* vi: set ts=4 sw=4 expandtab: */