annotate src/audio/bsd/SDL_bsdaudio.c @ 3124:d7174e9f65ce

More checks for current GF state were added.
author Mike Gorchak <lestat@i.com.ua>
date Thu, 14 May 2009 11:51:42 +0000
parents 2929ed239d2a
children f7b03b6838cb
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 * 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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90
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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 void
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108 BSDAUDIO_Deinitialize(void)
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109 {
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110 free_device_lists();
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111 }
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112
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113
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114 static int
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115 BSDAUDIO_DetectDevices(int iscapture)
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116 {
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117 if (iscapture) {
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118 build_device_list(1, &inputDevices, &inputDeviceCount);
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119 return inputDeviceCount;
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120 } else {
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121 build_device_list(0, &outputDevices, &outputDeviceCount);
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122 return outputDeviceCount;
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123 }
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124
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125 return 0; /* shouldn't ever hit this. */
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126 }
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127
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128 static const char *
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129 BSDAUDIO_GetDeviceName(int index, int iscapture)
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130 {
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diff changeset
131 if ((iscapture) && (index < inputDeviceCount)) {
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diff changeset
132 return inputDevices[index];
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diff changeset
133 } else if ((!iscapture) && (index < outputDeviceCount)) {
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diff changeset
134 return outputDevices[index];
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parents: 1982
diff changeset
135 }
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diff changeset
136
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diff changeset
137 SDL_SetError("No such device");
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diff changeset
138 return NULL;
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139 }
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140
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141
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142 static void
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143 BSDAUDIO_Status(_THIS)
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144 {
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145 #ifdef DEBUG_AUDIO
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146 /* *INDENT-OFF* */
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147 audio_info_t info;
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148
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diff changeset
149 if (ioctl(this->hidden->audio_fd, AUDIO_GETINFO, &info) < 0) {
1895
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150 fprintf(stderr, "AUDIO_GETINFO failed.\n");
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151 return;
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152 }
1895
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153 fprintf(stderr, "\n"
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154 "[play/record info]\n"
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155 "buffer size : %d bytes\n"
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156 "sample rate : %i Hz\n"
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157 "channels : %i\n"
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158 "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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parents: 1583
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159 "encoding : 0x%x\n"
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160 "seek : %i\n"
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161 "sample count : %i\n"
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162 "EOF count : %i\n"
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163 "paused : %s\n"
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164 "error occured : %s\n"
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165 "waiting : %s\n"
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166 "active : %s\n"
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167 "",
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diff changeset
168 info.play.buffer_size,
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diff changeset
169 info.play.sample_rate,
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parents: 1982
diff changeset
170 info.play.channels,
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parents: 1982
diff changeset
171 info.play.precision,
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parents: 1982
diff changeset
172 info.play.encoding,
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parents: 1982
diff changeset
173 info.play.seek,
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parents: 1982
diff changeset
174 info.play.samples,
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Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
175 info.play.eof,
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parents: 1982
diff changeset
176 info.play.pause ? "yes" : "no",
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parents: 1982
diff changeset
177 info.play.error ? "yes" : "no",
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diff changeset
178 info.play.waiting ? "yes" : "no",
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diff changeset
179 info.play.active ? "yes" : "no");
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180
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181 fprintf(stderr, "\n"
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182 "[audio info]\n"
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diff changeset
183 "monitor_gain : %i\n"
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184 "hw block size : %d bytes\n"
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diff changeset
185 "hi watermark : %i\n"
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diff changeset
186 "lo watermark : %i\n"
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187 "audio mode : %s\n"
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diff changeset
188 "",
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diff changeset
189 info.monitor_gain,
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diff changeset
190 info.blocksize,
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diff changeset
191 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
192 (info.mode == AUMODE_PLAY) ? "PLAY"
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193 : (info.mode = AUMODE_RECORD) ? "RECORD"
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diff changeset
194 : (info.mode == AUMODE_PLAY_ALL ? "PLAY_ALL" : "?"));
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195 /* *INDENT-ON* */
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diff changeset
196 #endif /* DEBUG_AUDIO */
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197 }
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198
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199
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diff changeset
200 /* This function waits until it is possible to write a full sound buffer */
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diff changeset
201 static void
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diff changeset
202 BSDAUDIO_WaitDevice(_THIS)
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diff changeset
203 {
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diff changeset
204 #ifndef USE_BLOCKING_WRITES /* Not necessary when using blocking writes */
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diff changeset
205 /* See if we need to use timed audio synchronization */
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diff changeset
206 if (this->hidden->frame_ticks) {
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diff changeset
207 /* Use timer for general audio synchronization */
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diff changeset
208 Sint32 ticks;
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diff changeset
209
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diff changeset
210 ticks =
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diff changeset
211 ((Sint32) (this->hidden->next_frame - SDL_GetTicks())) -
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diff changeset
212 FUDGE_TICKS;
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diff changeset
213 if (ticks > 0) {
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diff changeset
214 SDL_Delay(ticks);
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diff changeset
215 }
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diff changeset
216 } else {
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diff changeset
217 /* Use select() for audio synchronization */
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diff changeset
218 fd_set fdset;
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diff changeset
219 struct timeval timeout;
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220
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diff changeset
221 FD_ZERO(&fdset);
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diff changeset
222 FD_SET(this->hidden->audio_fd, &fdset);
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diff changeset
223 timeout.tv_sec = 10;
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diff changeset
224 timeout.tv_usec = 0;
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diff changeset
225 #ifdef DEBUG_AUDIO
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diff changeset
226 fprintf(stderr, "Waiting for audio to get ready\n");
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diff changeset
227 #endif
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diff changeset
228 if (select(this->hidden->audio_fd + 1, NULL, &fdset, NULL, &timeout)
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diff changeset
229 <= 0) {
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diff changeset
230 const char *message =
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diff changeset
231 "Audio timeout - buggy audio driver? (disabled)";
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diff changeset
232 /* In general we should never print to the screen,
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diff changeset
233 but in this case we have no other way of letting
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diff changeset
234 the user know what happened.
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diff changeset
235 */
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diff changeset
236 fprintf(stderr, "SDL: %s\n", message);
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diff changeset
237 this->enabled = 0;
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diff changeset
238 /* Don't try to close - may hang */
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diff changeset
239 this->hidden->audio_fd = -1;
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diff changeset
240 #ifdef DEBUG_AUDIO
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diff changeset
241 fprintf(stderr, "Done disabling audio\n");
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diff changeset
242 #endif
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diff changeset
243 }
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diff changeset
244 #ifdef DEBUG_AUDIO
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diff changeset
245 fprintf(stderr, "Ready!\n");
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diff changeset
246 #endif
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diff changeset
247 }
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diff changeset
248 #endif /* !USE_BLOCKING_WRITES */
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diff changeset
249 }
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diff changeset
250
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diff changeset
251 static void
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diff changeset
252 BSDAUDIO_PlayDevice(_THIS)
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diff changeset
253 {
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Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
254 int written, p = 0;
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Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
255
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
256 /* Write the audio data, checking for EAGAIN on broken audio drivers */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
257 do {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
258 written = write(this->hidden->audio_fd,
2060
866052b01ee5 indent is evil
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parents: 2049
diff changeset
259 &this->hidden->mixbuf[p], this->hidden->mixlen - p);
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
260
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
261 if (written > 0)
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
262 p += written;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
263 if (written == -1 && errno != 0 && errno != EAGAIN && errno != EINTR) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
264 /* Non recoverable error has occurred. It should be reported!!! */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
265 perror("audio");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
266 break;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
267 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
268
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
269 if (p < written
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
270 || ((written < 0) && ((errno == 0) || (errno == EAGAIN)))) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
271 SDL_Delay(1); /* Let a little CPU time go by */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
272 }
2735
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2065
diff changeset
273 } while (p < written);
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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parents: 1982
diff changeset
274
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
275 /* If timer synchronization is enabled, set the next write frame */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
276 if (this->hidden->frame_ticks) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
277 this->hidden->next_frame += this->hidden->frame_ticks;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
278 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
279
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
280 /* If we couldn't write, assume fatal error for now */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
281 if (written < 0) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
282 this->enabled = 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
283 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
284 #ifdef DEBUG_AUDIO
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
285 fprintf(stderr, "Wrote %d bytes of audio data\n", written);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
286 #endif
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
287 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
288
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
289 static Uint8 *
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
290 BSDAUDIO_GetDeviceBuf(_THIS)
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
291 {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
292 return (this->hidden->mixbuf);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
293 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
294
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
295 static void
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
296 BSDAUDIO_CloseDevice(_THIS)
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
297 {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
298 if (this->hidden != NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
299 if (this->hidden->mixbuf != NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
300 SDL_FreeAudioMem(this->hidden->mixbuf);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
301 this->hidden->mixbuf = NULL;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
302 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
303 if (this->hidden->audio_fd >= 0) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
304 close(this->hidden->audio_fd);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
305 this->hidden->audio_fd = -1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
306 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
307 SDL_free(this->hidden);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
308 this->hidden = NULL;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
309 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
310 }
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
311
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
312 static int
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
313 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
314 {
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
315 const int flags = ((iscapture) ? OPEN_FLAGS_INPUT : OPEN_FLAGS_OUTPUT);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
316 SDL_AudioFormat format = 0;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
317 audio_info_t info;
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
318
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
319 /* We don't care what the devname is...we'll try to open anything. */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
320 /* ...but default to first name in the list... */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
321 if (devname == NULL) {
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2049
diff changeset
322 if (((iscapture) && (inputDeviceCount == 0)) ||
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2049
diff changeset
323 ((!iscapture) && (outputDeviceCount == 0))) {
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
324 SDL_SetError("No such audio device");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
325 return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
326 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
327 devname = ((iscapture) ? inputDevices[0] : outputDevices[0]);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
328 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
329
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
330 /* Initialize all variables that we clean on shutdown */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
331 this->hidden = (struct SDL_PrivateAudioData *)
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2049
diff changeset
332 SDL_malloc((sizeof *this->hidden));
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
333 if (this->hidden == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
334 SDL_OutOfMemory();
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
335 return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
336 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
337 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
338
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
339 /* Open the audio device */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
340 this->hidden->audio_fd = open(devname, flags, 0);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
341 if (this->hidden->audio_fd < 0) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
342 SDL_SetError("Couldn't open %s: %s", devname, strerror(errno));
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
343 return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
344 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
345
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
346 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
347
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
348 /* Calculate the final parameters for this audio specification */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
349 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
350
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
351 /* Set to play mode */
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
352 info.mode = AUMODE_PLAY;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
353 if (ioctl(this->hidden->audio_fd, AUDIO_SETINFO, &info) < 0) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
354 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
355 SDL_SetError("Couldn't put device into play mode");
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
356 return 0;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
357 }
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
358
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
359 AUDIO_INITINFO(&info);
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
360 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
361 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
362 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
363 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
364 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
365 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
366 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
367 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
368 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
369 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
370 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
371 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
372 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
373 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
374 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
375 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
376 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
377 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
378 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
379 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
380 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
381 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
382 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
383 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
384 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
385 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
386 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
387 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
388 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
389 }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
390
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
391 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
392 break;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
393 }
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
394 }
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
395
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
396 if (!format) {
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
397 BSDAUDIO_CloseDevice(this);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
398 SDL_SetError("No supported encoding for 0x%x", this->spec.format);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
399 return 0;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
400 }
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
401
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
402 this->spec.format = format;
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 AUDIO_INITINFO(&info);
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
405 info.play.channels = this->spec.channels;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
406 if (ioctl(this->hidden->audio_fd, AUDIO_SETINFO, &info) == -1) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
407 this->spec.channels = 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
408 }
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
409 AUDIO_INITINFO(&info);
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
410 info.play.sample_rate = this->spec.freq;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
411 info.blocksize = this->spec.size;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
412 info.hiwat = 5;
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
413 info.lowat = 3;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
414 (void) ioctl(this->hidden->audio_fd, AUDIO_SETINFO, &info);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
415 (void) ioctl(this->hidden->audio_fd, AUDIO_GETINFO, &info);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
416 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
417 /* Allocate mixing buffer */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
418 this->hidden->mixlen = this->spec.size;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
419 this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
420 if (this->hidden->mixbuf == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
421 BSDAUDIO_CloseDevice(this);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
422 SDL_OutOfMemory();
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
423 return 0;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
424 }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
425 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
426
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
427 BSDAUDIO_Status(this);
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
428
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
429 /* 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
430 return (0);
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
431 }
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
432
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
433 static int
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2049
diff changeset
434 BSDAUDIO_Init(SDL_AudioDriverImpl * impl)
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
435 {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
436 /* Set the function pointers */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
437 impl->DetectDevices = BSDAUDIO_DetectDevices;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
438 impl->GetDeviceName = BSDAUDIO_GetDeviceName;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
439 impl->OpenDevice = BSDAUDIO_OpenDevice;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
440 impl->PlayDevice = BSDAUDIO_PlayDevice;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
441 impl->WaitDevice = BSDAUDIO_WaitDevice;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
442 impl->GetDeviceBuf = BSDAUDIO_GetDeviceBuf;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
443 impl->CloseDevice = BSDAUDIO_CloseDevice;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
444 impl->Deinitialize = BSDAUDIO_Deinitialize;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
445
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
446 build_device_lists();
2938
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2859
diff changeset
447 return (outputDeviceCount > 0) ? 2 : 1;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
448 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
449
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
450
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
451 AudioBootStrap BSD_AUDIO_bootstrap = {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
452 BSD_AUDIO_DRIVER_NAME, BSD_AUDIO_DRIVER_DESC, BSDAUDIO_Init, 0
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
453 };
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
454
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
455 /* vi: set ts=4 sw=4 expandtab: */