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annotate src/audio/mint/SDL_mintaudio_mcsn.c @ 2938:2929ed239d2a

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Adjusted default choice of audio driver. If a driver can definitely see available devices, it is chosen. Otherwise, we'll take the first driver that initializes but saw no devices...this might be because it can't enumerate them, or there really aren't any available. This prevents the dsp driver from hogging control when there are no /dev/dsp* nodes (for example, on a Linux box with ALSA and no OSS emulation).
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 01 Jan 2009 07:54:58 +0000
parents 99210400e8b9
children 1e431c2631ee
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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 using XBIOS functions (MacSound compatible driver)
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27
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28 Patrice Mandin
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29 */
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30
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31 #include <support.h>
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32
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33 /* Mint includes */
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34 #include <mint/osbind.h>
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35 #include <mint/falcon.h>
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36 #include <mint/cookie.h>
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37
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38 #include "SDL_audio.h"
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39 #include "../SDL_audio_c.h"
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40 #include "../SDL_sysaudio.h"
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41
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42 #include "../../video/ataricommon/SDL_atarimxalloc_c.h"
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43
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44 #include "SDL_mintaudio.h"
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45 #include "SDL_mintaudio_mcsn.h"
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46
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47 /*--- Defines ---*/
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48
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49 #define MINT_AUDIO_DRIVER_NAME "mint_mcsn"
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50
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51 /* Debug print info */
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52 #define DEBUG_NAME "audio:mcsn: "
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53 #if 0
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54 #define DEBUG_PRINT(what) \
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55 { \
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56 printf what; \
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57 }
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58 #else
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59 #define DEBUG_PRINT(what)
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60 #endif
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61
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62 /*--- Static variables ---*/
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63
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64 static unsigned long cookie_snd = 0;
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65 static unsigned long cookie_mch = 0;
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66 static cookie_mcsn_t *cookie_mcsn = NULL;
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67
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68 static void
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69 MINTMCSN_LockDevice(_THIS)
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70 {
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71 /* Stop replay */
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72 Buffoper(0);
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73 }
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74
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75 static void
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76 MINTMCSN_UnlockDevice(_THIS)
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77 {
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78 /* Restart replay */
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79 Buffoper(SB_PLA_ENA | SB_PLA_RPT);
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80 }
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81
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82 static void
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83 MINTMCSN_CloseDevice(_THIS)
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84 {
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85 if (this->hidden != NULL) {
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86 /* Stop replay */
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87 SDL_MintAudio_WaitThread();
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88 Buffoper(0);
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89
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90 if (!SDL_MintAudio_mint_present) {
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91 /* Uninstall interrupt */
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92 Jdisint(MFP_DMASOUND);
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93 }
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94
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95 /* Wait if currently playing sound */
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96 while (SDL_MintAudio_mutex != 0) {
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97 }
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99 /* Clear buffers */
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100 if (SDL_MintAudio_audiobuf[0]) {
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101 Mfree(SDL_MintAudio_audiobuf[0]);
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102 SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL;
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103 }
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104
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105 /* Unlock sound system */
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106 Unlocksnd();
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107
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108 SDL_free(this->hidden);
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109 this->hidden = NULL;
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110 }
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111 }
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112
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113 static int
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114 MINTMCSN_CheckAudio(_THIS)
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115 {
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116 int i;
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117 unsigned long masterclock, masterprediv;
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118
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119 DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ",
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120 SDL_AUDIO_BITSIZE(this->spec.format)));
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121 DEBUG_PRINT(("float=%d, ", SDL_AUDIO_ISFLOAT(this->spec.format)));
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122 DEBUG_PRINT(("signed=%d, ", SDL_AUDIO_ISSIGNED(this->spec.format)));
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123 DEBUG_PRINT(("big endian=%d, ",
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124 SDL_AUDIO_ISBIGENDIAN(this->spec.format)));
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125 DEBUG_PRINT(("channels=%d, ", this->spec.channels));
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126 DEBUG_PRINT(("freq=%d\n", this->spec.freq));
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127
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128 if (this->spec.channels > 2) {
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129 this->spec.channels = 2; /* no more than stereo! */
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130 }
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131
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132 /* Check formats available */
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133 MINTAUDIO_freqcount = 0;
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134 switch (cookie_mcsn->play) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
135 case MCSN_ST:
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diff changeset
136 this->spec.channels = 1;
2060
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137 this->spec.format = AUDIO_S8; /* FIXME: is it signed or unsigned ? */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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138 SDL_MintAudio_AddFrequency(this, 12500, 0, 0, -1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
139 break;
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
140 case MCSN_TT: /* Also STE, Mega STE */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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parents: 2043
diff changeset
141 this->spec.format = AUDIO_S8;
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
142 masterclock = MASTERCLOCK_STE;
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
143 masterprediv = MASTERPREDIV_STE;
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
144 if ((cookie_mch >> 16) == MCH_TT) {
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
145 masterclock = MASTERCLOCK_TT;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
146 masterprediv = MASTERPREDIV_TT;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
147 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
148 for (i = 0; i < 4; i++) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
149 SDL_MintAudio_AddFrequency(this,
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
150 masterclock / (masterprediv *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
151 (1 << i)),
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
152 masterclock, 3 - i, -1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
153 }
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
154 break;
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
155 case MCSN_FALCON: /* Also Mac */
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
156 for (i = 1; i < 12; i++) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
157 /* Remove unusable Falcon codec predivisors */
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
158 if ((i == 6) || (i == 8) || (i == 10)) {
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
159 continue;
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 }
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
161 SDL_MintAudio_AddFrequency(this,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
162 MASTERCLOCK_FALCON1 /
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
163 (MASTERPREDIV_FALCON * (i + 1)),
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 CLK25M, i + 1, -1);
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
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 if (cookie_mcsn->res1 != 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
167 for (i = 1; i < 4; i++) {
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
168 SDL_MintAudio_AddFrequency(this,
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
169 (cookie_mcsn->res1) /
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
170 (MASTERPREDIV_FALCON *
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
171 (1 << i)), CLKEXT,
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
172 (1 << i) - 1, -1);
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
173 }
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
174 }
2060
866052b01ee5 indent is evil
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diff changeset
175 this->spec.format |= SDL_AUDIO_MASK_SIGNED; /* Audio is always signed */
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 if ((SDL_AUDIO_BITSIZE(this->spec.format)) == 16) {
2060
866052b01ee5 indent is evil
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diff changeset
177 this->spec.format |= SDL_AUDIO_MASK_ENDIAN; /* Audio is always big endian */
866052b01ee5 indent is evil
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diff changeset
178 this->spec.channels = 2; /* 16 bits always stereo */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
179 }
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
180 break;
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
181 }
644
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parents:
diff changeset
182
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
183 #if 1
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
184 for (i = 0; i < MINTAUDIO_freqcount; 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
185 DEBUG_PRINT((DEBUG_NAME "freq %d: %lu Hz, clock %lu, prediv %d\n",
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
186 i, MINTAUDIO_frequencies[i].frequency,
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
187 MINTAUDIO_frequencies[i].masterclock,
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
188 MINTAUDIO_frequencies[i].predivisor));
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
189 }
961
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diff changeset
190 #endif
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
191
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
192 MINTAUDIO_numfreq = SDL_MintAudio_SearchFrequency(this, this->spec.freq);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
193 this->spec.freq = MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency;
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
194
2043
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2027
diff changeset
195 DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ",
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
196 SDL_AUDIO_BITSIZE(this->spec.format)));
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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parents: 2043
diff changeset
197 DEBUG_PRINT(("float=%d, ", SDL_AUDIO_ISFLOAT(this->spec.format)));
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
198 DEBUG_PRINT(("signed=%d, ", SDL_AUDIO_ISSIGNED(this->spec.format)));
2060
866052b01ee5 indent is evil
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diff changeset
199 DEBUG_PRINT(("big endian=%d, ",
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2049
diff changeset
200 SDL_AUDIO_ISBIGENDIAN(this->spec.format)));
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
201 DEBUG_PRINT(("channels=%d, ", this->spec.channels));
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
202 DEBUG_PRINT(("freq=%d\n", this->spec.freq));
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
203
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
204 return 0;
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
205 }
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
206
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
207 static void
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
208 MINTMCSN_InitAudio(_THIS)
644
594422ab8f9f Atari MiNT: added more audio drivers
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diff changeset
209 {
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
210 int channels_mode, prediv, dmaclock;
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 void *buffer;
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
212
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
213 /* Stop currently playing sound */
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 SDL_MintAudio_quit_thread = SDL_FALSE;
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 SDL_MintAudio_thread_finished = SDL_TRUE;
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 SDL_MintAudio_WaitThread();
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 Buffoper(0);
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
218
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
219 /* Set replay tracks */
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 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
221 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
222
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 /* Select replay format */
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 channels_mode = STEREO16;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
225 switch (SDL_AUDIO_BITSIZE(this->spec.format)) {
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 case 8:
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
227 if (this->spec.channels == 2) {
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
228 channels_mode = STEREO8;
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 } 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
230 channels_mode = 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
231 }
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 break;
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 }
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 if (Setmode(channels_mode) < 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
235 DEBUG_PRINT((DEBUG_NAME "Setmode() 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
236 }
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
237
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
238 dmaclock = MINTAUDIO_frequencies[MINTAUDIO_numfreq].masterclock;
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 prediv = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor;
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 switch (cookie_mcsn->play) {
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 case MCSN_TT:
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 Devconnect(DMAPLAY, DAC, CLK25M, CLKOLD, 1);
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 Soundcmd(SETPRESCALE, prediv);
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 DEBUG_PRINT((DEBUG_NAME "STE/TT prescaler selected\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
245 break;
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 case MCSN_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
247 Devconnect(DMAPLAY, DAC, dmaclock, prediv, 1);
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 "Falcon prescaler selected\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 break;
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 }
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
251
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
252 /* 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
253 buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
254 if (Setbuffer(0, buffer, buffer + this->spec.size) < 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
255 DEBUG_PRINT((DEBUG_NAME "Setbuffer() failed\n"));
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256 }
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257
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258 if (SDL_MintAudio_mint_present) {
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259 SDL_MintAudio_thread_pid = tfork(SDL_MintAudio_Thread, 0);
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260 } else {
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261 /* Install interrupt */
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262 Jdisint(MFP_DMASOUND);
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263 Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_XbiosInterrupt);
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264 Jenabint(MFP_DMASOUND);
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265
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266 if (Setinterrupt(SI_TIMERA, SI_PLAY) < 0) {
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267 DEBUG_PRINT((DEBUG_NAME "Setinterrupt() failed\n"));
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268 }
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269 }
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270
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271 /* Go */
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272 Buffoper(SB_PLA_ENA | SB_PLA_RPT);
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273 DEBUG_PRINT((DEBUG_NAME "hardware initialized\n"));
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274 }
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275
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276 static int
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277 MINTMCSN_OpenDevice(_THIS, const char *devname, int iscapture)
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278 {
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279 /* Lock sound system */
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280 if (Locksnd() != 1) {
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281 SDL_SetError("MINTMCSN_OpenDevice: Audio system already in use");
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282 return 0;
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283 }
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284
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285 SDL_MintAudio_device = this;
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286
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287 /* Check audio capabilities */
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288 if (MINTMCSN_CheckAudio(this) == -1) {
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289 return 0;
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290 }
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291
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292 /* Initialize all variables that we clean on shutdown */
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293 this->hidden = (struct SDL_PrivateAudioData *)
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294 SDL_malloc((sizeof *this->hidden));
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295 if (this->hidden == NULL) {
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296 SDL_OutOfMemory();
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297 return 0;
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298 }
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299 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
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300
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301 SDL_CalculateAudioSpec(&this->spec);
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302
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303 /* Allocate memory for audio buffers in DMA-able RAM */
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304 DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", this->spec.size));
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305
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306 SDL_MintAudio_audiobuf[0] =
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307 Atari_SysMalloc(this->spec.size * 2, MX_STRAM);
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308 if (SDL_MintAudio_audiobuf[0] == NULL) {
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309 SDL_free(this->hidden);
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310 this->hidden = NULL;
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311 SDL_OutOfMemory();
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312 return 0;
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313 }
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314 SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + this->spec.size;
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315 SDL_MintAudio_numbuf = 0;
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316 SDL_memset(SDL_MintAudio_audiobuf[0], this->spec.silence,
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diff changeset
317 this->spec.size * 2);
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318 SDL_MintAudio_audiosize = this->spec.size;
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319 SDL_MintAudio_mutex = 0;
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320
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321 DEBUG_PRINT((DEBUG_NAME "buffer 0 at 0x%08x\n",
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322 SDL_MintAudio_audiobuf[0]));
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323 DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n",
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324 SDL_MintAudio_audiobuf[1]));
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325
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326 SDL_MintAudio_CheckFpu();
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diff changeset
327
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328 /* Setup audio hardware */
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329 MINTMCSN_InitAudio(this);
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330
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331 return 1; /* good to go. */
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332 }
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333
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334 static int
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335 MINTMCSN_Init(SDL_AudioDriverImpl * impl)
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336 {
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diff changeset
337 unsigned long dummy = 0;
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338
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339 SDL_MintAudio_mint_present = (Getcookie(C_MiNT, &dummy) == C_FOUND);
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340
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diff changeset
341 /* We can't use XBIOS in interrupt with Magic, don't know about thread */
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342 if (Getcookie(C_MagX, &dummy) == C_FOUND) {
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343 return 0;
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344 }
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345
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346 /* Cookie _MCH present ? if not, assume ST machine */
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347 if (Getcookie(C__MCH, &cookie_mch) == C_NOTFOUND) {
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348 cookie_mch = MCH_ST;
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349 }
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diff changeset
350
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diff changeset
351 /* Cookie _SND present ? if not, assume ST machine */
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352 if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) {
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353 cookie_snd = SND_PSG;
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354 }
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diff changeset
355
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diff changeset
356 /* Check if we have 16 bits audio */
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diff changeset
357 if ((cookie_snd & SND_16BIT) == 0) {
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diff changeset
358 SDL_SetError(DEBUG_NAME "no 16-bit sound");
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diff changeset
359 return 0;
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diff changeset
360 }
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diff changeset
361
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diff changeset
362 /* Cookie MCSN present ? */
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363 if (Getcookie(C_McSn, (long *) &cookie_mcsn) != C_FOUND) {
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diff changeset
364 SDL_SetError(DEBUG_NAME "no MCSN audio");
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diff changeset
365 return 0;
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366 }
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diff changeset
367
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diff changeset
368 /* Check if interrupt at end of replay */
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369 if (cookie_mcsn->pint == 0) {
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diff changeset
370 SDL_SetError(DEBUG_NAME "no interrupt at end of replay");
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diff changeset
371 return 0;
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diff changeset
372 }
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diff changeset
373
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diff changeset
374 /* Check if audio is lockable */
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diff changeset
375 if (Locksnd() != 1) {
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376 SDL_SetError(DEBUG_NAME "audio locked by other application");
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377 return 0;
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378 }
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379
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380 Unlocksnd();
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381
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382 DEBUG_PRINT((DEBUG_NAME "MCSN audio available!\n"));
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383
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384 /* Set the function pointers */
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385 impl->OpenDevice = MINTMCSN_OpenDevice;
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386 impl->CloseDevice = MINTMCSN_CloseDevice;
2191
29e07f91bc1f Rename LockAudio,UnlockAudio to LockDevice,UnlockDevice. Also some small fixes
Patrice Mandin <patmandin@gmail.com>
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387 impl->LockDevice = MINTMCSN_LockDevice;
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388 impl->UnlockDevice = MINTMCSN_UnlockDevice;
2049
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389 impl->OnlyHasDefaultOutputDevice = 1;
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390 impl->ProvidesOwnCallbackThread = 1;
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391 impl->SkipMixerLock = 1;
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392
2938
2929ed239d2a Adjusted default choice of audio driver.
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393 return 2; /* 2 == definitely has an audio device. */
2049
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394 }
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395
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396 AudioBootStrap MINTAUDIO_MCSN_bootstrap = {
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397 MINT_AUDIO_DRIVER_NAME, "MiNT MCSN audio driver", MINTMCSN_Init, 0
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398 };
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399
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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400 /* vi: set ts=4 sw=4 expandtab: */