Mercurial > sdl-ios-xcode

annotate src/audio/bsd/SDL_bsdaudio.c @ 3819:b225d9820ee3 SDL-ryan-multiple-audio-device

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Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and BeOS). None are tested, so anyu could fail to compile.
author Ryan C. Gordon <icculus@icculus.org>
date Fri, 06 Oct 2006 20:36:23 +0000
parents 9d070c1a45fa
children 1f156fd874fa
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 O_WRONLY
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65 #else
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66 #define OPEN_FLAGS (O_WRONLY|O_NONBLOCK)
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67 #endif
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68
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69 /* Audio driver functions */
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70 static void OBSD_WaitAudio(_THIS);
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71 static int OBSD_OpenAudio(_THIS, SDL_AudioSpec * spec);
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72 static void OBSD_PlayAudio(_THIS);
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73 static Uint8 *OBSD_GetAudioBuf(_THIS);
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74 static void OBSD_CloseAudio(_THIS);
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75
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76 #ifdef DEBUG_AUDIO
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77 static void OBSD_Status(_THIS);
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78 #endif
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79
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80 /* Audio driver bootstrap functions */
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81
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82 static int
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83 Audio_Available(void)
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84 {
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85 int fd;
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86 int available;
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87
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88 available = 0;
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89 fd = SDL_OpenAudioPath(NULL, 0, OPEN_FLAGS, 0);
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90 if (fd >= 0) {
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91 available = 1;
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92 close(fd);
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93 }
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94 return (available);
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95 }
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96
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97 static void
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98 Audio_DeleteDevice(SDL_AudioDevice * device)
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99 {
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100 SDL_free(device->hidden);
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101 SDL_free(device);
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102 }
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103
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104 static SDL_AudioDevice *
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105 Audio_CreateDevice(int devindex)
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106 {
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107 SDL_AudioDevice *this;
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108
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109 /* Initialize all variables that we clean on shutdown */
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110 this = (SDL_AudioDevice *) SDL_malloc(sizeof(SDL_AudioDevice));
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111 if (this) {
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112 SDL_memset(this, 0, (sizeof *this));
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113 this->hidden = (struct SDL_PrivateAudioData *)
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114 SDL_malloc((sizeof *this->hidden));
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115 }
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116 if ((this == NULL) || (this->hidden == NULL)) {
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117 SDL_OutOfMemory();
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118 if (this)
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119 SDL_free(this);
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120 return (0);
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121 }
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122 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
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123 audio_fd = -1;
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124
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125 /* Set the function pointers */
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126 this->OpenAudio = OBSD_OpenAudio;
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127 this->WaitAudio = OBSD_WaitAudio;
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128 this->PlayAudio = OBSD_PlayAudio;
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129 this->GetAudioBuf = OBSD_GetAudioBuf;
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130 this->CloseAudio = OBSD_CloseAudio;
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131
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132 this->free = Audio_DeleteDevice;
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133
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134 return this;
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135 }
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136
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137 AudioBootStrap BSD_AUDIO_bootstrap = {
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138 BSD_AUDIO_DRIVER_NAME, BSD_AUDIO_DRIVER_DESC,
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diff changeset
139 Audio_Available, Audio_CreateDevice, 0
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diff changeset
140 };
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diff changeset
141
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142 /* This function waits until it is possible to write a full sound buffer */
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143 static void
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
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diff changeset
144 OBSD_WaitAudio(_THIS)
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diff changeset
145 {
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diff changeset
146 #ifndef USE_BLOCKING_WRITES /* Not necessary when using blocking writes */
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147 /* See if we need to use timed audio synchronization */
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148 if (frame_ticks) {
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149 /* Use timer for general audio synchronization */
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diff changeset
150 Sint32 ticks;
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151
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diff changeset
152 ticks = ((Sint32) (next_frame - SDL_GetTicks())) - FUDGE_TICKS;
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153 if (ticks > 0) {
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154 SDL_Delay(ticks);
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155 }
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diff changeset
156 } else {
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157 /* Use select() for audio synchronization */
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158 fd_set fdset;
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diff changeset
159 struct timeval timeout;
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160
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diff changeset
161 FD_ZERO(&fdset);
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162 FD_SET(audio_fd, &fdset);
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163 timeout.tv_sec = 10;
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164 timeout.tv_usec = 0;
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165 #ifdef DEBUG_AUDIO
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166 fprintf(stderr, "Waiting for audio to get ready\n");
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167 #endif
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168 if (select(audio_fd + 1, NULL, &fdset, NULL, &timeout) <= 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
169 const char *message =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
170 "Audio timeout - buggy audio driver? (disabled)";
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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171 /* In general we should never print to the screen,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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172 but in this case we have no other way of letting
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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173 the user know what happened.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
174 */
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diff changeset
175 fprintf(stderr, "SDL: %s\n", message);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
176 this->enabled = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
177 /* Don't try to close - may hang */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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178 audio_fd = -1;
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12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
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179 #ifdef DEBUG_AUDIO
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diff changeset
180 fprintf(stderr, "Done disabling audio\n");
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181 #endif
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diff changeset
182 }
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12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
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diff changeset
183 #ifdef DEBUG_AUDIO
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184 fprintf(stderr, "Ready!\n");
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12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
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185 #endif
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c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
186 }
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12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
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diff changeset
187 #endif /* !USE_BLOCKING_WRITES */
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
188 }
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
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parents:
diff changeset
189
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
190 static void
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
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parents:
diff changeset
191 OBSD_PlayAudio(_THIS)
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
192 {
1895
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diff changeset
193 int written, p = 0;
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diff changeset
194
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c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
195 /* Write the audio data, checking for EAGAIN on broken audio drivers */
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diff changeset
196 do {
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diff changeset
197 written = write(audio_fd, &mixbuf[p], mixlen - p);
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diff changeset
198 if (written > 0)
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diff changeset
199 p += written;
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diff changeset
200 if (written == -1 && errno != 0 && errno != EAGAIN && errno != EINTR) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
201 /* Non recoverable error has occurred. It should be reported!!! */
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
202 perror("audio");
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
203 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
204 }
1567
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205
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
206 if (p < written
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
207 || ((written < 0) && ((errno == 0) || (errno == EAGAIN)))) {
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
208 SDL_Delay(1); /* Let a little CPU time go by */
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diff changeset
209 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
210 }
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
211 while (p < written);
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
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parents:
diff changeset
212
1895
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diff changeset
213 /* If timer synchronization is enabled, set the next write frame */
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
214 if (frame_ticks) {
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
215 next_frame += frame_ticks;
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diff changeset
216 }
1567
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diff changeset
217
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diff changeset
218 /* If we couldn't write, assume fatal error for now */
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parents: 1583
diff changeset
219 if (written < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
220 this->enabled = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
221 }
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
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diff changeset
222 #ifdef DEBUG_AUDIO
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diff changeset
223 fprintf(stderr, "Wrote %d bytes of audio data\n", written);
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
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parents:
diff changeset
224 #endif
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
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parents:
diff changeset
225 }
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
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parents:
diff changeset
226
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diff changeset
227 static Uint8 *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
228 OBSD_GetAudioBuf(_THIS)
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
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parents:
diff changeset
229 {
1895
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diff changeset
230 return (mixbuf);
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
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parents:
diff changeset
231 }
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
232
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
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parents:
diff changeset
233 static void
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
234 OBSD_CloseAudio(_THIS)
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
235 {
1895
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diff changeset
236 if (mixbuf != NULL) {
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
237 SDL_FreeAudioMem(mixbuf);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
238 mixbuf = NULL;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
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parents:
diff changeset
239 }
1895
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
240 if (audio_fd >= 0) {
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
241 close(audio_fd);
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
242 audio_fd = -1;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
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parents:
diff changeset
243 }
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
244 }
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
245
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
246 #ifdef DEBUG_AUDIO
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
247 void
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
248 OBSD_Status(_THIS)
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
249 {
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
250 audio_info_t info;
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
251
1895
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diff changeset
252 if (ioctl(audio_fd, AUDIO_GETINFO, &info) < 0) {
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
253 fprintf(stderr, "AUDIO_GETINFO failed.\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
254 return;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
255 }
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
256
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
257 fprintf(stderr, "\n"
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
258 "[play/record info]\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
259 "buffer size : %d bytes\n"
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
260 "sample rate : %i Hz\n"
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
261 "channels : %i\n"
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
262 "precision : %i-bit\n"
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
263 "encoding : 0x%x\n"
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
264 "seek : %i\n"
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
265 "sample count : %i\n"
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
266 "EOF count : %i\n"
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
267 "paused : %s\n"
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
268 "error occured : %s\n"
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
269 "waiting : %s\n"
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
270 "active : %s\n"
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
271 "",
3816
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
272 info.play.buffer_size,
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
273 info.play.sample_rate,
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
274 info.play.channels,
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
275 info.play.precision,
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
276 info.play.encoding,
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
277 info.play.seek,
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
278 info.play.samples,
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
279 info.play.eof,
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
280 info.play.pause ? "yes" : "no",
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
281 info.play.error ? "yes" : "no",
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
282 info.play.waiting ? "yes" : "no",
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
283 info.play.active ? "yes" : "no");
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
284
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
285 fprintf(stderr, "\n"
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
286 "[audio info]\n"
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
287 "monitor_gain : %i\n"
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
288 "hw block size : %d bytes\n"
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
289 "hi watermark : %i\n"
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
290 "lo watermark : %i\n"
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
291 "audio mode : %s\n"
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
292 "",
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
293 info.monitor_gain,
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
294 info.blocksize,
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
295 info.hiwat, info.lowat,
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
296 (info.mode == AUMODE_PLAY) ? "PLAY"
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
297 : (info.mode = AUMODE_RECORD) ? "RECORD"
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
298 : (info.mode == AUMODE_PLAY_ALL ? "PLAY_ALL" : "?"));
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
299 }
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
300 #endif /* DEBUG_AUDIO */
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
301
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
302 static int
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
303 OBSD_OpenAudio(_THIS, SDL_AudioSpec * spec)
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
304 {
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
305 char audiodev[64];
1982
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
306 SDL_AudioFormat format;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
307 audio_info_t info;
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
308
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
309 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
310
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
311 /* Calculate the final parameters for this audio specification */
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
312 SDL_CalculateAudioSpec(spec);
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
313
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
314 #ifdef USE_TIMER_SYNC
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
315 frame_ticks = 0.0;
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
316 #endif
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
317
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
318 /* Open the audio device */
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
319 audio_fd = SDL_OpenAudioPath(audiodev, sizeof(audiodev), OPEN_FLAGS, 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
320 if (audio_fd < 0) {
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
321 SDL_SetError("Couldn't open %s: %s", audiodev, strerror(errno));
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
322 return (-1);
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
323 }
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
324
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
325 /* Set to play mode */
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
326 info.mode = AUMODE_PLAY;
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
327 if (ioctl(audio_fd, AUDIO_SETINFO, &info) < 0) {
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
328 SDL_SetError("Couldn't put device into play mode");
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
329 return (-1);
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
330 }
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
331
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
332 mixbuf = NULL;
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
333 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
334 for (format = SDL_FirstAudioFormat(spec->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
335 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
336 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
337 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
338 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
339 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
340 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
341 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
342 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
343 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
344 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
345 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
346 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
347 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
348 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
349 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
350 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
351 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
352 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
353 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
354 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
355 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
356 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
357 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
358 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
359 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
360 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
361 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
362 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
363 }
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 if (ioctl(audio_fd, AUDIO_SETINFO, &info) == 0)
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 break;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
366 }
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
367
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
368 if (!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
369 SDL_SetError("No supported encoding for 0x%x", spec->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
370 return (-1);
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
371 }
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
372
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
373 spec->format = format;
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
374
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
375 AUDIO_INITINFO(&info);
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
376 info.play.channels = spec->channels;
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
377 if (ioctl(audio_fd, AUDIO_SETINFO, &info) == -1)
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
378 spec->channels = 1;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
379 AUDIO_INITINFO(&info);
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
380 info.play.sample_rate = spec->freq;
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
381 info.blocksize = spec->size;
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
382 info.hiwat = 5;
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
383 info.lowat = 3;
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
384 (void) ioctl(audio_fd, AUDIO_SETINFO, &info);
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 (void) ioctl(audio_fd, AUDIO_GETINFO, &info);
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 spec->freq = info.play.sample_rate;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
387 /* Allocate mixing buffer */
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
388 mixlen = 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
389 mixbuf = (Uint8 *) SDL_AllocAudioMem(mixlen);
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 if (mixbuf == NULL) {
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 return (-1);
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
392 }
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
393 SDL_memset(mixbuf, spec->silence, 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
394
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
395 /* Get the parent process id (we're the parent of the audio thread) */
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
396 parent = getpid();
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
397
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
398 #ifdef DEBUG_AUDIO
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
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399 OBSD_Status(this);
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
400 #endif
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
401
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
402 /* 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
403 return (0);
1567
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
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
406 /* vi: set ts=4 sw=4 expandtab: */