Mercurial > sdl-ios-xcode

annotate src/audio/paudio/SDL_paudio.c @ 2938:2929ed239d2a

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Adjusted default choice of audio driver. If a driver can definitely see available devices, it is chosen. Otherwise, we'll take the first driver that initializes but saw no devices...this might be because it can't enumerate them, or there really aren't any available. This prevents the dsp driver from hogging control when there are no /dev/dsp* nodes (for example, on a Linux box with ALSA and no OSS emulation).
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 01 Jan 2009 07:54:58 +0000
parents 99210400e8b9
children 1e431c2631ee
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 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 Lesser 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 Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Carsten Griwodz
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20 griff@kom.tu-darmstadt.de
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21
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22 based on linux/SDL_dspaudio.c by Sam Lantinga
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23 */
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24 #include "SDL_config.h"
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25
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26 /* Allow access to a raw mixing buffer */
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27
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28 #include <errno.h>
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29 #include <unistd.h>
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30 #include <fcntl.h>
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31 #include <sys/time.h>
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32 #include <sys/ioctl.h>
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33 #include <sys/types.h>
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34 #include <sys/stat.h>
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35
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36 #include "SDL_timer.h"
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37 #include "SDL_audio.h"
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38 #include "SDL_stdinc.h"
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39 #include "../SDL_audiomem.h"
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40 #include "../SDL_audio_c.h"
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41 #include "SDL_paudio.h"
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42
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43 #define DEBUG_AUDIO 0
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44
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45 /* A conflict within AIX 4.3.3 <sys/> headers and probably others as well.
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46 * I guess nobody ever uses audio... Shame over AIX header files. */
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47 #include <sys/machine.h>
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48 #undef BIG_ENDIAN
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49 #include <sys/audio.h>
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50
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51 /* The tag name used by paud audio */
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52 #define PAUDIO_DRIVER_NAME "paud"
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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 OPEN_FLAGS (O_WRONLY|O_NONBLOCK) */
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56 #define OPEN_FLAGS O_WRONLY
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57
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58 /* Get the name of the audio device we use for output */
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59
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60 #ifndef _PATH_DEV_DSP
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61 #define _PATH_DEV_DSP "/dev/%caud%c/%c"
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62 #endif
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63
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64 static char devsettings[][3] = {
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65 {'p', '0', '1'}, {'p', '0', '2'}, {'p', '0', '3'}, {'p', '0', '4'},
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66 {'p', '1', '1'}, {'p', '1', '2'}, {'p', '1', '3'}, {'p', '1', '4'},
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67 {'p', '2', '1'}, {'p', '2', '2'}, {'p', '2', '3'}, {'p', '2', '4'},
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68 {'p', '3', '1'}, {'p', '3', '2'}, {'p', '3', '3'}, {'p', '3', '4'},
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69 {'b', '0', '1'}, {'b', '0', '2'}, {'b', '0', '3'}, {'b', '0', '4'},
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70 {'b', '1', '1'}, {'b', '1', '2'}, {'b', '1', '3'}, {'b', '1', '4'},
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71 {'b', '2', '1'}, {'b', '2', '2'}, {'b', '2', '3'}, {'b', '2', '4'},
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72 {'b', '3', '1'}, {'b', '3', '2'}, {'b', '3', '3'}, {'b', '3', '4'},
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73 {'\0', '\0', '\0'}
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74 };
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75
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76 static int
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77 OpenUserDefinedDevice(char *path, int maxlen, int flags)
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78 {
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79 const char *audiodev;
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80 int fd;
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81
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82 /* Figure out what our audio device is */
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83 if ((audiodev = SDL_getenv("SDL_PATH_DSP")) == NULL) {
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84 audiodev = SDL_getenv("AUDIODEV");
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85 }
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86 if (audiodev == NULL) {
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87 return -1;
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88 }
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89 fd = open(audiodev, flags, 0);
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90 if (path != NULL) {
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91 SDL_strlcpy(path, audiodev, maxlen);
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92 path[maxlen - 1] = '\0';
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93 }
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94 return fd;
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95 }
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96
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97 static int
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98 OpenAudioPath(char *path, int maxlen, int flags, int classic)
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99 {
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100 struct stat sb;
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101 int cycle = 0;
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102 int fd = OpenUserDefinedDevice(path, maxlen, flags);
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103
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104 if (fd != -1) {
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105 return fd;
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106 }
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107
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108 /* !!! FIXME: do we really need a table here? */
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109 while (devsettings[cycle][0] != '\0') {
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110 char audiopath[1024];
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111 SDL_snprintf(audiopath, SDL_arraysize(audiopath),
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112 _PATH_DEV_DSP,
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113 devsettings[cycle][0],
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114 devsettings[cycle][1], devsettings[cycle][2]);
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115
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116 if (stat(audiopath, &sb) == 0) {
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117 fd = open(audiopath, flags, 0);
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118 if (fd > 0) {
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119 if (path != NULL) {
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120 SDL_strlcpy(path, audiopath, maxlen);
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121 }
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122 return fd;
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123 }
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124 }
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125 }
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126 return -1;
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127 }
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128
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129 /* This function waits until it is possible to write a full sound buffer */
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130 static void
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131 PAUDIO_WaitDevice(_THIS)
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132 {
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133 fd_set fdset;
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134
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135 /* See if we need to use timed audio synchronization */
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136 if (this->hidden->frame_ticks) {
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137 /* Use timer for general audio synchronization */
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138 Sint32 ticks;
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139
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140 ticks =
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141 ((Sint32) (this->hidden->next_frame - SDL_GetTicks())) -
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142 FUDGE_TICKS;
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143 if (ticks > 0) {
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144 SDL_Delay(ticks);
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145 }
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146 } else {
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147 audio_buffer paud_bufinfo;
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148
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149 /* Use select() for audio synchronization */
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150 struct timeval timeout;
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151 FD_ZERO(&fdset);
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152 FD_SET(this->hidden->audio_fd, &fdset);
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153
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154 if (ioctl(this->hidden->audio_fd, AUDIO_BUFFER, &paud_bufinfo) < 0) {
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155 #ifdef DEBUG_AUDIO
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156 fprintf(stderr, "Couldn't get audio buffer information\n");
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157 #endif
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158 timeout.tv_sec = 10;
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159 timeout.tv_usec = 0;
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160 } else {
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161 long ms_in_buf = paud_bufinfo.write_buf_time;
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162 timeout.tv_sec = ms_in_buf / 1000;
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163 ms_in_buf = ms_in_buf - timeout.tv_sec * 1000;
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164 timeout.tv_usec = ms_in_buf * 1000;
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165 #ifdef DEBUG_AUDIO
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166 fprintf(stderr,
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167 "Waiting for write_buf_time=%ld,%ld\n",
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168 timeout.tv_sec, timeout.tv_usec);
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169 #endif
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170 }
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171
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172 #ifdef DEBUG_AUDIO
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173 fprintf(stderr, "Waiting for audio to get ready\n");
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174 #endif
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175 if (select(this->hidden->audio_fd + 1, NULL, &fdset, NULL, &timeout)
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176 <= 0) {
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177 const char *message =
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178 "Audio timeout - buggy audio driver? (disabled)";
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179 /*
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180 * In general we should never print to the screen,
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181 * but in this case we have no other way of letting
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182 * the user know what happened.
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183 */
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184 fprintf(stderr, "SDL: %s - %s\n", strerror(errno), message);
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185 this->enabled = 0;
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186 /* Don't try to close - may hang */
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187 this->hidden->audio_fd = -1;
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188 #ifdef DEBUG_AUDIO
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189 fprintf(stderr, "Done disabling audio\n");
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190 #endif
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191 }
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192 #ifdef DEBUG_AUDIO
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193 fprintf(stderr, "Ready!\n");
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194 #endif
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195 }
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196 }
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197
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198 static void
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199 PAUDIO_PlayDevice(_THIS)
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200 {
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201 int written = 0;
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202 const Uint8 *mixbuf = this->hidden->mixbuf;
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203 const size_t mixlen = this->hidden->mixlen;
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204
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205 /* Write the audio data, checking for EAGAIN on broken audio drivers */
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206 do {
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207 written = write(this->hidden->audio_fd, mixbuf, mixlen);
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208 if ((written < 0) && ((errno == 0) || (errno == EAGAIN))) {
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209 SDL_Delay(1); /* Let a little CPU time go by */
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210 }
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211 } while ((written < 0) &&
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212 ((errno == 0) || (errno == EAGAIN) || (errno == EINTR)));
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213
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214 /* If timer synchronization is enabled, set the next write frame */
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215 if (this->hidden->frame_ticks) {
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216 this->hidden->next_frame += this->hidden->frame_ticks;
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217 }
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218
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219 /* If we couldn't write, assume fatal error for now */
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220 if (written < 0) {
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221 this->enabled = 0;
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222 }
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223 #ifdef DEBUG_AUDIO
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224 fprintf(stderr, "Wrote %d bytes of audio data\n", written);
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225 #endif
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226 }
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227
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228 static Uint8 *
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229 PAUDIO_GetDeviceBuf(_THIS)
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230 {
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231 return this->hidden->mixbuf;
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232 }
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233
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234 static void
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235 PAUDIO_CloseDevice(_THIS)
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236 {
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237 if (this->hidden != NULL) {
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238 if (this->hidden->mixbuf != NULL) {
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239 SDL_FreeAudioMem(this->hidden->mixbuf);
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240 this->hidden->mixbuf = NULL;
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241 }
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242 if (this->hidden->audio_fd >= 0) {
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243 close(this->hidden->audio_fd);
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244 this->hidden->audio_fd = -1;
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245 }
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246 SDL_free(this->hidden);
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247 this->hidden = NULL;
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248 }
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249 }
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250
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251 static int
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252 PAUDIO_OpenDevice(_THIS, const char *devname, int iscapture)
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253 {
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254 const char *workaround = SDL_getenv("SDL_DSP_NOSELECT");
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255 char audiodev[1024];
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256 const char *err = NULL;
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257 int format;
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258 int bytes_per_sample;
1982
3b4ce57c6215 First shot at new audio data types (int32 and float32).
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259 SDL_AudioFormat test_format;
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260 audio_init paud_init;
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261 audio_buffer paud_bufinfo;
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262 audio_status paud_status;
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263 audio_control paud_control;
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264 audio_change paud_change;
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diff changeset
265 int fd = -1;
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266
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diff changeset
267 /* Initialize all variables that we clean on shutdown */
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268 this->hidden = (struct SDL_PrivateAudioData *)
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269 SDL_malloc((sizeof *this->hidden));
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270 if (this->hidden == NULL) {
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271 SDL_OutOfMemory();
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272 return 0;
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273 }
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274 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
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275
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276 /* Open the audio device */
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277 fd = OpenAudioPath(audiodev, sizeof(audiodev), OPEN_FLAGS, 0);
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278 this->hidden->audio_fd = fd;
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diff changeset
279 if (fd < 0) {
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280 PAUDIO_CloseDevice(this);
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281 SDL_SetError("Couldn't open %s: %s", audiodev, strerror(errno));
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282 return 0;
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283 }
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284
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285 /*
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286 * We can't set the buffer size - just ask the device for the maximum
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287 * that we can have.
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288 */
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diff changeset
289 if (ioctl(fd, AUDIO_BUFFER, &paud_bufinfo) < 0) {
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diff changeset
290 PAUDIO_CloseDevice(this);
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291 SDL_SetError("Couldn't get audio buffer information");
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292 return 0;
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293 }
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294
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295 if (this->spec.channels > 1)
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296 this->spec.channels = 2;
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297 else
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298 this->spec.channels = 1;
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299
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300 /*
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301 * Fields in the audio_init structure:
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302 *
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303 * Ignored by us:
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304 *
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305 * paud.loadpath[LOAD_PATH]; * DSP code to load, MWave chip only?
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306 * paud.slot_number; * slot number of the adapter
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307 * paud.device_id; * adapter identification number
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308 *
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309 * Input:
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diff changeset
310 *
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diff changeset
311 * paud.srate; * the sampling rate in Hz
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312 * paud.bits_per_sample; * 8, 16, 32, ...
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313 * paud.bsize; * block size for this rate
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diff changeset
314 * paud.mode; * ADPCM, PCM, MU_LAW, A_LAW, SOURCE_MIX
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315 * paud.channels; * 1=mono, 2=stereo
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316 * paud.flags; * FIXED - fixed length data
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317 * * LEFT_ALIGNED, RIGHT_ALIGNED (var len only)
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318 * * TWOS_COMPLEMENT - 2's complement data
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319 * * SIGNED - signed? comment seems wrong in sys/audio.h
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320 * * BIG_ENDIAN
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321 * paud.operation; * PLAY, RECORD
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322 *
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323 * Output:
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diff changeset
324 *
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325 * paud.flags; * PITCH - pitch is supported
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326 * * INPUT - input is supported
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327 * * OUTPUT - output is supported
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328 * * MONITOR - monitor is supported
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329 * * VOLUME - volume is supported
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330 * * VOLUME_DELAY - volume delay is supported
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331 * * BALANCE - balance is supported
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332 * * BALANCE_DELAY - balance delay is supported
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333 * * TREBLE - treble control is supported
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334 * * BASS - bass control is supported
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335 * * BESTFIT_PROVIDED - best fit returned
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336 * * LOAD_CODE - DSP load needed
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337 * paud.rc; * NO_PLAY - DSP code can't do play requests
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338 * * NO_RECORD - DSP code can't do record requests
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339 * * INVALID_REQUEST - request was invalid
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340 * * CONFLICT - conflict with open's flags
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341 * * OVERLOADED - out of DSP MIPS or memory
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342 * paud.position_resolution; * smallest increment for position
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343 */
0
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344
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diff changeset
345 paud_init.srate = this->spec.freq;
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346 paud_init.mode = PCM;
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347 paud_init.operation = PLAY;
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diff changeset
348 paud_init.channels = this->spec.channels;
0
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349
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diff changeset
350 /* Try for a closest match on audio format */
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diff changeset
351 format = 0;
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diff changeset
352 for (test_format = SDL_FirstAudioFormat(this->spec.format);
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diff changeset
353 !format && test_format;) {
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diff changeset
354 #ifdef DEBUG_AUDIO
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355 fprintf(stderr, "Trying format 0x%4.4x\n", test_format);
0
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356 #endif
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357 switch (test_format) {
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diff changeset
358 case AUDIO_U8:
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359 bytes_per_sample = 1;
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diff changeset
360 paud_init.bits_per_sample = 8;
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diff changeset
361 paud_init.flags = TWOS_COMPLEMENT | FIXED;
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diff changeset
362 format = 1;
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diff changeset
363 break;
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diff changeset
364 case AUDIO_S8:
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diff changeset
365 bytes_per_sample = 1;
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diff changeset
366 paud_init.bits_per_sample = 8;
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diff changeset
367 paud_init.flags = SIGNED | TWOS_COMPLEMENT | FIXED;
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diff changeset
368 format = 1;
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diff changeset
369 break;
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diff changeset
370 case AUDIO_S16LSB:
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diff changeset
371 bytes_per_sample = 2;
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diff changeset
372 paud_init.bits_per_sample = 16;
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diff changeset
373 paud_init.flags = SIGNED | TWOS_COMPLEMENT | FIXED;
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diff changeset
374 format = 1;
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diff changeset
375 break;
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diff changeset
376 case AUDIO_S16MSB:
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diff changeset
377 bytes_per_sample = 2;
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diff changeset
378 paud_init.bits_per_sample = 16;
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diff changeset
379 paud_init.flags = BIG_ENDIAN | SIGNED | TWOS_COMPLEMENT | FIXED;
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diff changeset
380 format = 1;
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diff changeset
381 break;
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diff changeset
382 case AUDIO_U16LSB:
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diff changeset
383 bytes_per_sample = 2;
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diff changeset
384 paud_init.bits_per_sample = 16;
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diff changeset
385 paud_init.flags = TWOS_COMPLEMENT | FIXED;
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diff changeset
386 format = 1;
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
387 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
388 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: 1402
diff changeset
389 bytes_per_sample = 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
390 paud_init.bits_per_sample = 16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
391 paud_init.flags = BIG_ENDIAN | TWOS_COMPLEMENT | FIXED;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
392 format = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
393 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
394 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
395 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
396 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
397 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: 1402
diff changeset
398 test_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: 1402
diff changeset
399 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
400 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
401 if (format == 0) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
402 #ifdef DEBUG_AUDIO
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
403 fprintf(stderr, "Couldn't find any hardware audio formats\n");
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
404 #endif
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 PAUDIO_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: 1402
diff changeset
406 SDL_SetError("Couldn't find any hardware audio formats");
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
407 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
408 }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
409 this->spec.format = test_format;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
410
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
411 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
412 * We know the buffer size and the max number of subsequent writes
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
413 * that can be pending. If more than one can pend, allow the application
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
414 * to do something like double buffering between our write buffer and
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
415 * the device's own buffer that we are filling with write() anyway.
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
416 *
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
417 * We calculate this->spec.samples like this because
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
418 * SDL_CalculateAudioSpec() will give put paud_bufinfo.write_buf_cap
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
419 * (or paud_bufinfo.write_buf_cap/2) into this->spec.size in return.
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
420 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
421 if (paud_bufinfo.request_buf_cap == 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
422 this->spec.samples = paud_bufinfo.write_buf_cap
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
423 / bytes_per_sample / this->spec.channels;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
424 } else {
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 this->spec.samples = paud_bufinfo.write_buf_cap
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
426 / bytes_per_sample / this->spec.channels / 2;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
427 }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
428 paud_init.bsize = bytes_per_sample * this->spec.channels;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
429
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
430 SDL_CalculateAudioSpec(&this->spec);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
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: 1402
diff changeset
432 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
433 * The AIX paud device init can't modify the values of the audio_init
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
434 * structure that we pass to it. So we don't need any recalculation
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
435 * of this stuff and no reinit call as in linux dsp and dma code.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
436 *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
437 * /dev/paud supports all of the encoding formats, so we don't need
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
438 * to do anything like reopening the device, either.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
439 */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
440 if (ioctl(fd, AUDIO_INIT, &paud_init) < 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: 1402
diff changeset
441 switch (paud_init.rc) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
442 case 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
443 err = "Couldn't set audio format: DSP can't do play requests";
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
444 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
445 case 2:
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
446 err = "Couldn't set audio format: DSP can't do record requests";
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
447 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
448 case 4:
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
449 err = "Couldn't set audio format: request was invalid";
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
450 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
451 case 5:
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
452 err = "Couldn't set audio format: conflict with open's flags";
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
453 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
454 case 6:
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
455 err = "Couldn't set audio format: out of DSP MIPS or memory";
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
456 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
457 default:
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
458 err = "Couldn't set audio format: not documented in sys/audio.h";
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
459 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
460 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
461 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
462
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
463 if (err != NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
464 PAUDIO_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
465 SDL_SetError("Paudio: %s", err);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
466 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
467 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
468
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
469 /* 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
470 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
471 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
472 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
473 PAUDIO_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
474 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
475 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
476 }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
477 SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
478
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
479 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
480 * Set some paramters: full volume, first speaker that we can find.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
481 * Ignore the other settings for now.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
482 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
483 paud_change.input = AUDIO_IGNORE; /* the new input source */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
484 paud_change.output = OUTPUT_1; /* EXTERNAL_SPEAKER,INTERNAL_SPEAKER,OUTPUT_1 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
485 paud_change.monitor = AUDIO_IGNORE; /* the new monitor state */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
486 paud_change.volume = 0x7fffffff; /* volume level [0-0x7fffffff] */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
487 paud_change.volume_delay = AUDIO_IGNORE; /* the new volume delay */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
488 paud_change.balance = 0x3fffffff; /* the new balance */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
489 paud_change.balance_delay = AUDIO_IGNORE; /* the new balance delay */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
490 paud_change.treble = AUDIO_IGNORE; /* the new treble state */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
491 paud_change.bass = AUDIO_IGNORE; /* the new bass state */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
492 paud_change.pitch = AUDIO_IGNORE; /* the new pitch state */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
493
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
494 paud_control.ioctl_request = AUDIO_CHANGE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
495 paud_control.request_info = (char *) &paud_change;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
496 if (ioctl(fd, AUDIO_CONTROL, &paud_control) < 0) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
497 #ifdef DEBUG_AUDIO
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
498 fprintf(stderr, "Can't change audio display settings\n");
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
499 #endif
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
500 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
501
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
502 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
503 * Tell the device to expect data. Actual start will wait for
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
504 * the first write() call.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
505 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
506 paud_control.ioctl_request = AUDIO_START;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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507 paud_control.position = 0;
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508 if (ioctl(fd, AUDIO_CONTROL, &paud_control) < 0) {
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diff changeset
509 PAUDIO_CloseDevice(this);
0
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diff changeset
510 #ifdef DEBUG_AUDIO
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diff changeset
511 fprintf(stderr, "Can't start audio play\n");
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parents:
diff changeset
512 #endif
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diff changeset
513 SDL_SetError("Can't start audio play");
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Ryan C. Gordon <icculus@icculus.org>
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diff changeset
514 return 0;
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515 }
0
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parents:
diff changeset
516
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diff changeset
517 /* Check to see if we need to use select() workaround */
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Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
518 if (workaround != NULL) {
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parents: 1982
diff changeset
519 this->hidden->frame_ticks = (float) (this->spec.samples * 1000) /
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diff changeset
520 this->spec.freq;
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parents: 1982
diff changeset
521 this->hidden->next_frame = SDL_GetTicks() + this->hidden->frame_ticks;
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diff changeset
522 }
0
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parents:
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523
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diff changeset
524 /* We're ready to rock and roll. :-) */
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diff changeset
525 return 1;
0
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526 }
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parents:
diff changeset
527
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diff changeset
528 static int
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diff changeset
529 PAUDIO_Init(SDL_AudioDriverImpl * impl)
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Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
530 {
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parents: 2859
diff changeset
531 /* !!! FIXME: not right for device enum? */
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parents: 1982
diff changeset
532 int fd = OpenAudioPath(NULL, 0, OPEN_FLAGS, 0);
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parents: 1982
diff changeset
533 if (fd < 0) {
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parents: 1982
diff changeset
534 SDL_SetError("PAUDIO: Couldn't open audio device");
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Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
535 return 0;
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parents: 1982
diff changeset
536 }
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parents: 1982
diff changeset
537 close(fd);
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parents: 1982
diff changeset
538
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Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
539 /* Set the function pointers */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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parents: 1982
diff changeset
540 impl->OpenDevice = DSP_OpenDevice;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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parents: 1982
diff changeset
541 impl->PlayDevice = DSP_PlayDevice;
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parents: 1982
diff changeset
542 impl->PlayDevice = DSP_WaitDevice;
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Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
543 impl->GetDeviceBuf = DSP_GetDeviceBuf;
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Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
544 impl->CloseDevice = DSP_CloseDevice;
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diff changeset
545 impl->OnlyHasDefaultOutputDevice = 1; /* !!! FIXME: add device enum! */
2049
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parents: 1982
diff changeset
546
2938
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parents: 2859
diff changeset
547 /* !!! FIXME: device enum might make this 1. */
2929ed239d2a Adjusted default choice of audio driver.
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parents: 2859
diff changeset
548 return 2; /* 2 == definitely has an audio device. */
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Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
549 }
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Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
550
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Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
551 AudioBootStrap PAUDIO_bootstrap = {
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Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
552 PAUDIO_DRIVER_NAME, "AIX Paudio", PAUDIO_Init, 0
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Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
553 };
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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parents: 1982
diff changeset
554
1895
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parents: 1402
diff changeset
555 /* vi: set ts=4 sw=4 expandtab: */