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annotate src/audio/bsd/SDL_bsdaudio.c @ 3820:1f156fd874fa SDL-ryan-multiple-audio-device

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Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and some other tweaks in already-converted drivers.
author Ryan C. Gordon <icculus@icculus.org>
date Sat, 07 Oct 2006 05:36:36 +0000
parents 9d070c1a45fa
children 66fb40445587
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 * Driver for native OpenBSD/NetBSD audio(4).
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26 * vedge@vedge.com.ar.
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27 */
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28
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29 #include <errno.h>
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30 #include <unistd.h>
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31 #include <fcntl.h>
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32 #include <sys/time.h>
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33 #include <sys/ioctl.h>
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34 #include <sys/stat.h>
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35 #include <sys/types.h>
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36 #include <sys/audioio.h>
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37
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38 #include "SDL_timer.h"
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39 #include "SDL_audio.h"
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40 #include "../SDL_audiomem.h"
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41 #include "../SDL_audio_c.h"
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42 #include "../SDL_audiodev_c.h"
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43 #include "SDL_bsdaudio.h"
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44
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45 /* The tag name used by NetBSD/OpenBSD audio */
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46 #ifdef __NetBSD__
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47 #define BSD_AUDIO_DRIVER_NAME "netbsd"
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48 #define BSD_AUDIO_DRIVER_DESC "Native NetBSD audio"
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49 #else
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50 #define BSD_AUDIO_DRIVER_NAME "openbsd"
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51 #define BSD_AUDIO_DRIVER_DESC "Native OpenBSD audio"
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52 #endif
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53
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54 /* Open the audio device for playback, and don't block if busy */
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55 /* #define USE_BLOCKING_WRITES */
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56
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57 /* Use timer for synchronization */
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58 /* #define USE_TIMER_SYNC */
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59
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60 /* #define DEBUG_AUDIO */
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61 /* #define DEBUG_AUDIO_STREAM */
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62
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63 #ifdef USE_BLOCKING_WRITES
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64 #define OPEN_FLAGS_OUTPUT O_WRONLY
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65 #define OPEN_FLAGS_INPUT O_RDONLY
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66 #else
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67 #define OPEN_FLAGS_OUTPUT (O_WRONLY|O_NONBLOCK)
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68 #define OPEN_FLAGS_INPUT (O_RDONLY|O_NONBLOCK)
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69 #endif
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70
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71 /* !!! FIXME: so much cut and paste with dsp/dma drivers... */
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72 static char **outputDevices = NULL;
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73 static int outputDeviceCount = 0;
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74 static char **inputDevices = NULL;
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75 static int inputDeviceCount = 0;
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76
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77 static inline void
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78 free_device_list(char ***devs, int *count)
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79 {
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80 SDL_FreeUnixAudioDevices(devs, count);
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81 }
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82
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83 static inline void
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84 build_device_list(int iscapture, char ***devs, int *count)
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85 {
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86 const int flags = ((iscapture) ? OPEN_FLAGS_INPUT : OPEN_FLAGS_OUTPUT);
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87 free_device_list(devs, count);
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88 SDL_EnumUnixAudioDevices(flags, 0, NULL, devs, count);
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89 }
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91 static inline void
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92 build_device_lists(void)
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93 {
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94 build_device_list(0, &outputDevices, &outputDeviceCount);
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95 build_device_list(1, &inputDevices, &inputDeviceCount);
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96 }
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97
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98
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99 static inline void
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100 free_device_lists(void)
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101 {
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102 free_device_list(&outputDevices, &outputDeviceCount);
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103 free_device_list(&inputDevices, &inputDeviceCount);
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104 }
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105
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106
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107 static int
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108 BSDAUDIO_Available(void)
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109 {
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110 int available = 0;
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111 build_device_lists();
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112 available = ((outputDeviceCount > 0) || (inputDeviceCount > 0));
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113 free_device_lists();
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114 return available;
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115 }
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116
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117
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118 static void
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119 BSDAUDIO_Deinitialize(void)
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120 {
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121 free_device_lists();
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122 }
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123
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124
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125 static int
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126 BSDAUDIO_DetectDevices(int iscapture)
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127 {
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128 if (iscapture) {
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129 build_device_list(1, &inputDevices, &inputDeviceCount);
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130 return inputDeviceCount;
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131 } else {
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132 build_device_list(0, &outputDevices, &outputDeviceCount);
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133 return outputDeviceCount;
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134 }
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135
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136 return 0; /* shouldn't ever hit this. */
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137 }
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138
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139 static const char *
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140 BSDAUDIO_GetDeviceName(int index, int iscapture)
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141 {
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142 if ((iscapture) && (index < inputDeviceCount)) {
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143 return inputDevices[index];
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144 } else if ((!iscapture) && (index < outputDeviceCount)) {
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145 return outputDevices[index];
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146 }
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147
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148 SDL_SetError("No such device");
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149 return NULL;
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150 }
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151
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152
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153 static void
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154 BSDAUDIO_Status(_THIS)
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diff changeset
155 {
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diff changeset
156 #ifdef DEBUG_AUDIO
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157 audio_info_t info;
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158
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159 if (ioctl(this->hidden->audio_fd, AUDIO_GETINFO, &info) < 0) {
1895
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160 fprintf(stderr, "AUDIO_GETINFO failed.\n");
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161 return;
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162 }
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163
1895
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164 fprintf(stderr, "\n"
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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165 "[play/record info]\n"
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166 "buffer size : %d bytes\n"
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167 "sample rate : %i Hz\n"
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diff changeset
168 "channels : %i\n"
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diff changeset
169 "precision : %i-bit\n"
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
170 "encoding : 0x%x\n"
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
171 "seek : %i\n"
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
172 "sample count : %i\n"
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
173 "EOF count : %i\n"
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diff changeset
174 "paused : %s\n"
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1583
diff changeset
175 "error occured : %s\n"
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
176 "waiting : %s\n"
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diff changeset
177 "active : %s\n"
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diff changeset
178 "",
3816
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179 info.play.buffer_size,
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180 info.play.sample_rate,
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diff changeset
181 info.play.channels,
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diff changeset
182 info.play.precision,
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diff changeset
183 info.play.encoding,
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diff changeset
184 info.play.seek,
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diff changeset
185 info.play.samples,
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diff changeset
186 info.play.eof,
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diff changeset
187 info.play.pause ? "yes" : "no",
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diff changeset
188 info.play.error ? "yes" : "no",
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diff changeset
189 info.play.waiting ? "yes" : "no",
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parents: 3798
diff changeset
190 info.play.active ? "yes" : "no");
1567
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191
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diff changeset
192 fprintf(stderr, "\n"
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diff changeset
193 "[audio info]\n"
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diff changeset
194 "monitor_gain : %i\n"
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diff changeset
195 "hw block size : %d bytes\n"
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diff changeset
196 "hi watermark : %i\n"
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diff changeset
197 "lo watermark : %i\n"
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diff changeset
198 "audio mode : %s\n"
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diff changeset
199 "",
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diff changeset
200 info.monitor_gain,
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diff changeset
201 info.blocksize,
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parents: 1583
diff changeset
202 info.hiwat, info.lowat,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
203 (info.mode == AUMODE_PLAY) ? "PLAY"
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diff changeset
204 : (info.mode = AUMODE_RECORD) ? "RECORD"
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diff changeset
205 : (info.mode == AUMODE_PLAY_ALL ? "PLAY_ALL" : "?"));
3820
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diff changeset
206 #endif /* DEBUG_AUDIO */
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diff changeset
207 }
3820
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diff changeset
208
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diff changeset
209
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diff changeset
210 /* This function waits until it is possible to write a full sound buffer */
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diff changeset
211 static void
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diff changeset
212 BSDAUDIO_WaitDevice(_THIS)
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diff changeset
213 {
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diff changeset
214 #ifndef USE_BLOCKING_WRITES /* Not necessary when using blocking writes */
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diff changeset
215 /* See if we need to use timed audio synchronization */
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diff changeset
216 if (this->hidden->frame_ticks) {
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diff changeset
217 /* Use timer for general audio synchronization */
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diff changeset
218 Sint32 ticks;
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diff changeset
219
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diff changeset
220 ticks = ((Sint32)(this->hidden->next_frame-SDL_GetTicks()))-FUDGE_TICKS;
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diff changeset
221 if (ticks > 0) {
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diff changeset
222 SDL_Delay(ticks);
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diff changeset
223 }
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diff changeset
224 } else {
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diff changeset
225 /* Use select() for audio synchronization */
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diff changeset
226 fd_set fdset;
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diff changeset
227 struct timeval timeout;
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228
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diff changeset
229 FD_ZERO(&fdset);
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diff changeset
230 FD_SET(this->hidden->audio_fd, &fdset);
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diff changeset
231 timeout.tv_sec = 10;
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diff changeset
232 timeout.tv_usec = 0;
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diff changeset
233 #ifdef DEBUG_AUDIO
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diff changeset
234 fprintf(stderr, "Waiting for audio to get ready\n");
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
235 #endif
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diff changeset
236 if (select(this->hidden->audio_fd+1,NULL,&fdset,NULL,&timeout) <= 0) {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
237 const char *message =
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diff changeset
238 "Audio timeout - buggy audio driver? (disabled)";
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diff changeset
239 /* In general we should never print to the screen,
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parents: 3816
diff changeset
240 but in this case we have no other way of letting
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parents: 3816
diff changeset
241 the user know what happened.
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diff changeset
242 */
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diff changeset
243 fprintf(stderr, "SDL: %s\n", message);
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parents: 3816
diff changeset
244 this->enabled = 0;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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parents: 3816
diff changeset
245 /* Don't try to close - may hang */
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diff changeset
246 this->hidden->audio_fd = -1;
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Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
247 #ifdef DEBUG_AUDIO
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parents: 3816
diff changeset
248 fprintf(stderr, "Done disabling audio\n");
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249 #endif
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250 }
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diff changeset
251 #ifdef DEBUG_AUDIO
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diff changeset
252 fprintf(stderr, "Ready!\n");
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253 #endif
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254 }
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diff changeset
255 #endif /* !USE_BLOCKING_WRITES */
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diff changeset
256 }
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diff changeset
257
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diff changeset
258 static void
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diff changeset
259 BSDAUDIO_PlayDevice(_THIS)
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260 {
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diff changeset
261 int written, p = 0;
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262
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diff changeset
263 /* Write the audio data, checking for EAGAIN on broken audio drivers */
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diff changeset
264 do {
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diff changeset
265 written = write(this->hidden->audio_fd,
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diff changeset
266 &this->hidden->mixbuf[p],
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diff changeset
267 this->hidden->mixlen - p);
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268
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diff changeset
269 if (written > 0)
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diff changeset
270 p += written;
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diff changeset
271 if (written == -1 && errno != 0 && errno != EAGAIN && errno != EINTR) {
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diff changeset
272 /* Non recoverable error has occurred. It should be reported!!! */
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diff changeset
273 perror("audio");
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274 break;
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diff changeset
275 }
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
276
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diff changeset
277 if (p < written
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278 || ((written < 0) && ((errno == 0) || (errno == EAGAIN)))) {
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diff changeset
279 SDL_Delay(1); /* Let a little CPU time go by */
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280 }
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
281 }
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diff changeset
282 while (p < written);
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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283
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diff changeset
284 /* If timer synchronization is enabled, set the next write frame */
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diff changeset
285 if (this->hidden->frame_ticks) {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
286 this->hidden->next_frame += this->hidden->frame_ticks;
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diff changeset
287 }
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
288
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
289 /* If we couldn't write, assume fatal error for now */
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diff changeset
290 if (written < 0) {
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diff changeset
291 this->enabled = 0;
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diff changeset
292 }
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diff changeset
293 #ifdef DEBUG_AUDIO
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diff changeset
294 fprintf(stderr, "Wrote %d bytes of audio data\n", written);
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diff changeset
295 #endif
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diff changeset
296 }
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diff changeset
297
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diff changeset
298 static Uint8 *
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diff changeset
299 BSDAUDIO_GetDeviceBuf(_THIS)
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diff changeset
300 {
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diff changeset
301 return (this->hidden->mixbuf);
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diff changeset
302 }
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diff changeset
303
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
304 static void
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
305 BSDAUDIO_CloseDevice(_THIS)
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
306 {
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diff changeset
307 if (this->hidden != NULL) {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
308 if (this->hidden->mixbuf != NULL) {
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diff changeset
309 SDL_FreeAudioMem(this->hidden->mixbuf);
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diff changeset
310 this->hidden->mixbuf = NULL;
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diff changeset
311 }
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diff changeset
312 if (this->hidden->audio_fd >= 0) {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
313 close(this->hidden->audio_fd);
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diff changeset
314 this->hidden->audio_fd = -1;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
315 }
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
316 SDL_free(this->hidden);
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diff changeset
317 this->hidden = NULL;
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diff changeset
318 }
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
319 }
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
320
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
321 static int
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
322 BSDAUDIO_OpenDevice(_THIS, const char *devname, int iscapture)
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
323 {
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
324 const int flags = ((iscapture) ? OPEN_FLAGS_INPUT : OPEN_FLAGS_OUTPUT);
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
325 SDL_AudioFormat format = 0;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
326 audio_info_t info;
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
327
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
328 /* We don't care what the devname is...we'll try to open anything. */
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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parents: 3816
diff changeset
329 /* ...but default to first name in the list... */
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parents: 3816
diff changeset
330 if (devname == NULL) {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
331 if ( ((iscapture) && (inputDeviceCount == 0)) ||
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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parents: 3816
diff changeset
332 ((!iscapture) && (outputDeviceCount == 0)) ) {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
333 SDL_SetError("No such audio device");
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
334 return 0;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
335 }
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
336 devname = ((iscapture) ? inputDevices[0] : outputDevices[0]);
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
337 }
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
338
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
339 /* Initialize all variables that we clean on shutdown */
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
340 this->hidden = (struct SDL_PrivateAudioData *)
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
341 SDL_malloc((sizeof *this->hidden));
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
342 if (this->hidden == NULL) {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
343 SDL_OutOfMemory();
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
344 return 0;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
345 }
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
346 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
347
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
348 /* Open the audio device */
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
349 this->hidden->audio_fd = open(devname, flags, 0);
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
350 if (this->hidden->audio_fd < 0) {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
351 SDL_SetError("Couldn't open %s: %s", devname, strerror(errno));
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
352 return 0;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
353 }
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
354
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
355 AUDIO_INITINFO(&info);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
356
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
357 /* Calculate the final parameters for this audio specification */
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
358 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: 1583
diff changeset
359
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
360 /* Set to play mode */
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
361 info.mode = AUMODE_PLAY;
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
362 if (ioctl(this->hidden->audio_fd, AUDIO_SETINFO, &info) < 0) {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
363 BSDAUDIO_CloseDevice(this);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
364 SDL_SetError("Couldn't put device into play mode");
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
365 return 0;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
366 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
367
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
368 AUDIO_INITINFO(&info);
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
369 for (format = SDL_FirstAudioFormat(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: 1583
diff changeset
370 format; format = SDL_NextAudioFormat()) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
371 switch (format) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
372 case AUDIO_U8:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
373 info.play.encoding = AUDIO_ENCODING_ULINEAR;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
374 info.play.precision = 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
375 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
376 case AUDIO_S8:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
377 info.play.encoding = AUDIO_ENCODING_SLINEAR;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
378 info.play.precision = 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
379 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
380 case AUDIO_S16LSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
381 info.play.encoding = AUDIO_ENCODING_SLINEAR_LE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
382 info.play.precision = 16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
383 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
384 case AUDIO_S16MSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
385 info.play.encoding = AUDIO_ENCODING_SLINEAR_BE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
386 info.play.precision = 16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
387 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
388 case AUDIO_U16LSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
389 info.play.encoding = AUDIO_ENCODING_ULINEAR_LE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
390 info.play.precision = 16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
391 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
392 case AUDIO_U16MSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
393 info.play.encoding = AUDIO_ENCODING_ULINEAR_BE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
394 info.play.precision = 16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
395 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
396 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
397 continue;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
398 }
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
399
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
400 if (ioctl(this->hidden->audio_fd, AUDIO_SETINFO, &info) == 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: 1583
diff changeset
401 break;
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
402 }
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
403 }
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
404
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
405 if (!format) {
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
406 BSDAUDIO_CloseDevice(this);
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
407 SDL_SetError("No supported encoding for 0x%x", this->spec.format);
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
408 return 0;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
409 }
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
410
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
411 this->spec.format = format;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
412
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
413 AUDIO_INITINFO(&info);
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
414 info.play.channels = this->spec.channels;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
415 if (ioctl(this->hidden->audio_fd, AUDIO_SETINFO, &info) == -1) {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
416 this->spec.channels = 1;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
417 }
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
418 AUDIO_INITINFO(&info);
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
419 info.play.sample_rate = this->spec.freq;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
420 info.blocksize = this->spec.size;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
421 info.hiwat = 5;
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
422 info.lowat = 3;
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
423 (void) ioctl(this->hidden->audio_fd, AUDIO_SETINFO, &info);
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
424 (void) ioctl(this->hidden->audio_fd, AUDIO_GETINFO, &info);
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
425 this->spec.freq = info.play.sample_rate;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
426 /* Allocate mixing buffer */
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
427 this->hidden->mixlen = this->spec.size;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
428 this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
429 if (this->hidden->mixbuf == NULL) {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
430 BSDAUDIO_CloseDevice(this);
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
431 SDL_OutOfMemory();
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
432 return 0;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
433 }
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
434 SDL_memset(this->hidden->mixbuf, this->spec.silence, 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: 1583
diff changeset
435
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
436 BSDAUDIO_Status(this);
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
437
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
438 /* We're ready to rock and roll. :-) */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
439 return (0);
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
440 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
441
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
442 static int
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
443 BSDAUDIO_Init(SDL_AudioDriverImpl *impl)
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
444 {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
445 /* Set the function pointers */
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
446 impl->DetectDevices = DSP_DetectDevices;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
447 impl->GetDeviceName = DSP_GetDeviceName;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
448 impl->OpenDevice = DSP_OpenDevice;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
449 impl->PlayDevice = DSP_PlayDevice;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
450 impl->WaitDevice = DSP_WaitDevice;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
451 impl->GetDeviceBuf = DSP_GetDeviceBuf;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
452 impl->CloseDevice = DSP_CloseDevice;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
453 impl->Deinitialize = DSP_Deinitialize;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
454
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
455 build_device_lists();
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
456 return 1;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
457 }
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
458
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
459
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
460 AudioBootStrap BSD_AUDIO_bootstrap = {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
461 BSD_AUDIO_DRIVER_NAME, BSD_AUDIO_DRIVER_DESC,
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
462 BSDAUDIO_Available, BSDAUDIO_Init, 0
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
463 };
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
464
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
465 /* vi: set ts=4 sw=4 expandtab: */