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0
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1 /* nas.c --- XEmacs support for the Network Audio System server.
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2 *
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3 * Author: Richard Caley <R.Caley@ed.ac.uk>
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4 *
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5 * Copyright 1994 Free Software Foundation, Inc.
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6 * Copyright 1993 Network Computing Devices, Inc.
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7 *
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8 * Permission to use, copy, modify, distribute, and sell this software and
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9 * its documentation for any purpose is hereby granted without fee, provided
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10 * that the above copyright notice appear in all copies and that both that
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11 * copyright notice and this permission notice appear in supporting
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12 * documentation, and that the name Network Computing Devices, Inc. not be
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13 * used in advertising or publicity pertaining to distribution of this
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14 * software without specific, written prior permission.
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15 *
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16 * THIS SOFTWARE IS PROVIDED 'AS-IS'. NETWORK COMPUTING DEVICES, INC.,
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17 * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT
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18 * LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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19 * PARTICULAR PURPOSE, OR NONINFRINGEMENT. IN NO EVENT SHALL NETWORK
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20 * COMPUTING DEVICES, INC., BE LIABLE FOR ANY DAMAGES WHATSOEVER, INCLUDING
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21 * SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING LOSS OF USE, DATA,
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22 * OR PROFITS, EVEN IF ADVISED OF THE POSSIBILITY THEREOF, AND REGARDLESS OF
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23 * WHETHER IN AN ACTION IN CONTRACT, TORT OR NEGLIGENCE, ARISING OUT OF OR IN
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24 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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25 */
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26
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27 /* Synched up with: Not in FSF. */
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28
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29 /* There are four compile-time options.
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30 *
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31 * XTOOLKIT This will be part of an Xt program.
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32 *
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33 * XTEVENTS The playing will be supervised asynchronously by the Xt event
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34 * loop. If not set, playing will be completed within the call
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35 * to play_file etc.
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36 *
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37 * ROBUST_PLAY Causes errors in nas to be caught. This means that the
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38 * program will attempt not to die if the nas server does.
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39 *
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40 * CACHE_SOUNDS Causes the sounds to be played in buckets in the NAS
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41 * server. They are named by their comment field, or if that is
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42 * empty by the filename, or for play_sound_data by a name made up
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43 * from the sample itself.
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44 */
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45
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46 /* CHANGES:
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47 * 10/8/94, rjc Changed names from netaudio to nas
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48 * Added back asynchronous play if nas library has
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49 * correct error facilities.
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50 * 4/11/94, rjc Added wait_for_sounds to be called when user wants to
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51 * be sure all play has finished.
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52 */
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53
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54 #if __STDC__ || defined (STDC_HEADERS)
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55
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56 # include <stdlib.h>
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57 # include <unistd.h>
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58 # include <stdarg.h>
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59
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60 #endif
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61
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62 #include <stdio.h>
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63 #include <string.h>
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64 #include <config.h> /* for CONST in syssignal.h (neal@ctd.comsat.com) */
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65 #include "syssignal.h"
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66
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67 #include <audio/audiolib.h>
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68 #include <audio/soundlib.h>
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69 #include <audio/snd.h>
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70 #include <audio/fileutil.h>
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71
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72 #ifdef emacs
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73
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74 # include <config.h>
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75 # include "lisp.h"
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76
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77 # define XTOOLKIT
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78 # define XTEVENTS
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79 # define ROBUST_PLAY
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80 # define CACHE_SOUNDS
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81
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82 /*
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83 * For old NAS libraries, force playing to be synchronous
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84 * and declare the long jump point locally.
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85 */
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86
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87 # if defined (NAS_NO_ERROR_JUMP)
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88
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89 # undef XTEVENTS
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90
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91 # include <setjmp.h>
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92 jmp_buf AuXtErrorJump;
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93 # endif
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94
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95 /* The GETTEXT is correct. --ben */
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96 # define warn(str) warn_when_safe (Qnas, Qwarning, "nas: %s ", GETTEXT (str))
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97
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98 # define play_sound_file nas_play_sound_file
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99 # define play_sound_data nas_play_sound_data
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100 # define wait_for_sounds nas_wait_for_sounds
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101 # define init_play nas_init_play
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102 # define close_down_play nas_close_down_play
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103
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104 #else /* !emacs */
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105 # define warn(str) fprintf (stderr, "%s\n", (str))
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106 # define CONST const
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107 #endif /* emacs */
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108
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109 #ifdef XTOOLKIT
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110 # include <X11/Intrinsic.h>
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111 # include <audio/Xtutil.h>
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112 #endif
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113
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114 #if defined (ROBUST_PLAY)
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115 static AuBool CatchIoErrorAndJump (AuServer *aud);
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116 static AuBool CatchErrorAndJump (AuServer *aud, AuErrorEvent *event);
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117 SIGTYPE sigpipe_handle (int signo);
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118 #endif
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119
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120 extern Lisp_Object Vsynchronous_sounds;
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121
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122 static Sound SoundOpenDataForReading (unsigned char *data, int length);
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123
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124 static AuServer *aud;
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125
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126 /* count of sounds currently being played. */
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127 static int sounds_in_play;
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128
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129
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130 #ifdef XTOOLKIT
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131 static Display *aud_server;
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132 static XtInputId input_id;
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133 #else
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134 static char *aud_server;
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135 #endif /* XTOOLKIT */
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136
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137 char *
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138 init_play (
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139 #ifdef XTOOLKIT
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140 Display *display
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141 #else
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142 char *server
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143 #endif
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144 )
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145 {
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146 char *err_message;
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147 SIGTYPE (*old_sigpipe) ();
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148
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149 #ifdef XTOOLKIT
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150 char * server = DisplayString (display);
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151 XtAppContext app_context = XtDisplayToApplicationContext (display);
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152
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153 aud_server = display;
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154 #else
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155
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156 aud_server = server;
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157 #endif
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158
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159 #ifdef ROBUST_PLAY
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160 old_sigpipe = signal (SIGPIPE, sigpipe_handle);
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161 if (setjmp (AuXtErrorJump))
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162 {
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163 signal (SIGPIPE, old_sigpipe);
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164 #ifdef emacs
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165 start_interrupts ();
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166 #endif
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167 return "error in NAS";
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168 }
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169 #endif
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170
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171 #if defined (ROBUST_PLAY) && !defined (NAS_NO_ERROR_JUMP)
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172 AuDefaultIOErrorHandler = CatchIoErrorAndJump;
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173 AuDefaultErrorHandler = CatchErrorAndJump;
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174 #endif
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175
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176 #ifdef emacs
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177 stop_interrupts ();
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178 #endif
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179 aud = AuOpenServer (server, 0, NULL, 0, NULL, &err_message);
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180 #ifdef emacs
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181 start_interrupts ();
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182 #endif
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183 if (!aud)
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184 {
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185 #ifdef ROBUST_PLAY
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186 signal (SIGPIPE, old_sigpipe);
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187 #endif
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188 if (err_message == NULL)
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189 return "Can't connect to audio server";
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190 else
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191 return err_message;
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192 }
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193
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194 #if defined (ROBUST_PLAY)
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195 # if defined (NAS_NO_ERROR_JUMP)
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196 aud->funcs.ioerror_handler = CatchIoErrorAndJump;
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197 aud->funcs.error_handler = CatchErrorAndJump;
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198 # else /* !NAS_NO_ERROR_JUMP */
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199 AuDefaultIOErrorHandler = NULL;
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200 AuDefaultErrorHandler = NULL;
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201 # endif
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202 #endif
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203
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204 #ifdef XTEVENTS
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205 input_id = AuXtAppAddAudioHandler (app_context, aud);
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206 #endif
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207
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208 #ifdef CACHE_SOUNDS
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209 AuSetCloseDownMode (aud, AuCloseDownRetainPermanent, NULL);
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210 #endif
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211
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212 #ifdef ROBUST_PLAY
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213 signal (SIGPIPE, old_sigpipe);
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214 #endif
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215
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216 sounds_in_play = 0;
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217
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218 return NULL;
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219 }
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220
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221 void
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222 close_down_play (void)
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223
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224 {
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225 AuCloseServer (aud);
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226 warn ("disconnected from audio server");
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227 }
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228
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229 /********************************************************************\
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230 * *
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231 * Callback which is run when the sound finishes playing. *
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232 * *
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233 \********************************************************************/
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234
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235 static void
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236 doneCB (AuServer *aud,
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237 AuEventHandlerRec *handler,
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238 AuEvent *ev,
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239 AuPointer data)
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240 {
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241 int *in_play_p = (int *) data;
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242
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243 (*in_play_p) --;
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244 }
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245
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246 #ifdef CACHE_SOUNDS
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247
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248 /********************************************************************\
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249 * *
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250 * Play a sound by playing the relevant bucket, if any or *
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251 * downloading it if not. *
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252 * *
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253 \********************************************************************/
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254
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255 static void
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256 do_caching_play (Sound s,
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257 int volume,
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258 unsigned char *buf)
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259
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260 {
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261 AuBucketAttributes *list, b;
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262 AuBucketID id;
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263 int n;
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264
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265 AuSetString (AuBucketDescription (&b),
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266 AuStringLatin1, strlen (SoundComment (s)), SoundComment (s));
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267
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268 list = AuListBuckets (aud, AuCompCommonDescriptionMask, &b, &n, NULL);
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269
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270 if (list == NULL)
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271 {
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272 unsigned char *my_buf;
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273
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274 if (buf==NULL)
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275 {
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276 if ((my_buf=malloc (SoundNumBytes (s)))==NULL)
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277 {
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278 return;
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279 }
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280
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281 if (SoundReadFile (my_buf, SoundNumBytes (s), s) != SoundNumBytes (s))
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282 {
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283 free (my_buf);
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284 return;
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285 }
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286 }
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287 else
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288 my_buf=buf;
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289
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290 id = AuSoundCreateBucketFromData (aud,
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291 s,
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292 my_buf,
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293 AuAccessAllMasks,
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294 NULL,
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295 NULL);
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296 if (buf == NULL)
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297 free (my_buf);
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298 }
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299 else /* found cached sound */
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300 {
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301 id = AuBucketIdentifier (list);
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302 AuFreeBucketAttributes (aud, n, list);
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303 }
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304
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305 sounds_in_play++;
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306
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307 AuSoundPlayFromBucket (aud,
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308 id,
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309 AuNone,
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310 AuFixedPointFromFraction (volume, 100),
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311 doneCB, (AuPointer) &sounds_in_play,
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312 1,
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313 NULL, NULL,
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314 NULL, NULL);
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315
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316 }
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317 #endif /* CACHE_SOUNDS */
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318
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319
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320 void
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321 wait_for_sounds (void)
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322
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323 {
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324 AuEvent ev;
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325
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326 while (sounds_in_play>0)
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327 {
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328 AuNextEvent (aud, AuTrue, &ev);
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329 AuDispatchEvent (aud, &ev);
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330 }
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331 }
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332
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333 int
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334 play_sound_file (char *sound_file,
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335 int volume)
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336 {
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337 SIGTYPE (*old_sigpipe) ();
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338
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339 #ifdef ROBUST_PLAY
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340 old_sigpipe=signal (SIGPIPE, sigpipe_handle);
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341 if (setjmp (AuXtErrorJump))
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342 {
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343 signal (SIGPIPE, old_sigpipe);
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344 return 0;
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345 }
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346 #endif
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347
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348 if (aud==NULL)
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349 if (aud_server != NULL)
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350 {
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351 char *m;
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352 /* attempt to reconect */
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353 if ((m=init_play (aud_server))!= NULL)
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354 {
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355
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356 #ifdef ROBUST_PLAY
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357 signal (SIGPIPE, old_sigpipe);
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358 #endif
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359 return 0;
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360 }
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361 }
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362 else
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363 {
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364 warn ("Attempt to play with no audio init\n");
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365 #ifdef ROBUST_PLAY
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366 signal (SIGPIPE, old_sigpipe);
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367 #endif
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368 return 0;
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369 }
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370
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371 #ifndef CACHE_SOUNDS
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372 sounds_in_play++;
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373 AuSoundPlayFromFile (aud,
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374 sound_file,
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375 AuNone,
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376 AuFixedPointFromFraction (volume,100),
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377 doneCB, (AuPointer) &sounds_in_play,
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378 NULL,
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379 NULL,
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380 NULL,
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381 NULL);
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382 #else
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383 /* Cache the sounds in buckets on the server */
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384
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385 {
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386 Sound s;
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387
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388 if ((s = SoundOpenFileForReading (sound_file))==NULL)
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389 {
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390 #ifdef ROBUST_PLAY
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391 signal (SIGPIPE, old_sigpipe);
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392 #endif
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393 return 0;
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394 }
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395
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396 if (SoundComment (s) == NULL || SoundComment (s)[0] == '\0')
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397 {
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398 SoundComment (s) = FileCommentFromFilename (sound_file);
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399 }
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400
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401 do_caching_play (s, volume, NULL);
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402
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403 SoundCloseFile (s);
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404
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405 }
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406 #endif /* CACHE_SOUNDS */
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407
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408 #ifndef XTEVENTS
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409 wait_for_sounds ();
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410 #else
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411 if (!NILP (Vsynchronous_sounds))
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412 {
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413 wait_for_sounds ();
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414 }
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415 #endif
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416
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417 #ifdef ROBUST_PLAY
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418 signal (SIGPIPE, old_sigpipe);
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419 #endif
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420
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421 return 1;
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422 }
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423
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424 int
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425 play_sound_data (unsigned char *data,
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426 int length,
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427 int volume)
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428 {
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429 Sound s;
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430 int offset;
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431 SIGTYPE (*old_sigpipe) ();
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432
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433 #if !defined (XTEVENTS)
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434 AuEvent ev;
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435 #endif
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436
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437 #ifdef ROBUST_PLAY
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438 old_sigpipe = signal (SIGPIPE, sigpipe_handle);
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439 if (setjmp (AuXtErrorJump) !=0)
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440 {
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441 signal (SIGPIPE, old_sigpipe);
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442 return 0;
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443 }
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444 #endif
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445
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446
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447 if (aud == NULL)
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448 if (aud_server != NULL)
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449 {
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450 char *m;
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451 /* attempt to reconect */
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452 if ((m = init_play (aud_server)) != NULL)
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453 {
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454 #ifdef ROBUST_PLAY
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455 signal (SIGPIPE, old_sigpipe);
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456 #endif
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457 return 0;
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458 }
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459 }
|
|
|
460 else
|
|
|
461 {
|
|
|
462 warn ("Attempt to play with no audio init\n");
|
|
|
463 #ifdef ROBUST_PLAY
|
|
|
464 signal (SIGPIPE, old_sigpipe);
|
|
|
465 #endif
|
|
|
466 return 0;
|
|
|
467 }
|
|
|
468
|
|
|
469 if ((s=SoundOpenDataForReading (data, length))==NULL)
|
|
|
470 {
|
|
|
471 warn ("unknown sound type");
|
|
|
472 #ifdef ROBUST_PLAY
|
|
|
473 signal (SIGPIPE, old_sigpipe);
|
|
|
474 #endif
|
|
|
475 return 0;
|
|
|
476 }
|
|
|
477
|
|
|
478 if (SoundFileFormat (s) == SoundFileFormatSnd)
|
|
|
479 {
|
|
|
480 /* hack, hack */
|
|
|
481 offset = ((SndInfo *) (s->formatInfo))->h.dataOffset;
|
|
|
482 }
|
|
|
483 else
|
|
|
484 {
|
|
|
485 warn ("only understand snd files at the moment");
|
|
|
486 SoundCloseFile (s);
|
|
|
487 #ifdef ROBUST_PLAY
|
|
|
488 signal (SIGPIPE, old_sigpipe);
|
|
|
489 #endif
|
|
|
490 return 0;
|
|
|
491 }
|
|
|
492
|
|
|
493 #ifndef CACHE_SOUNDS
|
|
|
494 sounds_in_play++;
|
|
|
495 AuSoundPlayFromData (aud,
|
|
|
496 s,
|
|
|
497 data+offset,
|
|
|
498 AuNone,
|
|
|
499 AuFixedPointFromFraction (volume,100),
|
|
|
500 doneCB, (AuPointer) &sounds_in_play,
|
|
|
501 NULL,
|
|
|
502 NULL,
|
|
|
503 NULL,
|
|
|
504 NULL);
|
|
|
505 #else
|
|
|
506 /* Cache the sounds in buckets on the server */
|
|
|
507
|
|
|
508 {
|
|
|
509 do_caching_play (s, volume, data+offset);
|
|
|
510 }
|
|
|
511 #endif /* CACHE_SOUNDS */
|
|
|
512
|
|
|
513
|
|
|
514 #ifndef XTEVENTS
|
|
|
515 wait_for_sounds ();
|
|
|
516 #else
|
|
|
517 if (!NILP (Vsynchronous_sounds))
|
|
|
518 {
|
|
|
519 wait_for_sounds ();
|
|
|
520 }
|
|
|
521 #endif
|
|
|
522
|
|
|
523 SoundCloseFile (s);
|
|
|
524
|
|
|
525 #ifdef ROBUST_PLAY
|
|
|
526 signal (SIGPIPE, old_sigpipe);
|
|
|
527 #endif
|
|
|
528
|
|
|
529 return 1;
|
|
|
530 }
|
|
|
531
|
|
|
532 #if defined (ROBUST_PLAY)
|
|
|
533
|
|
|
534 /********************************************************************\
|
|
|
535 * *
|
|
|
536 * Code to protect the client from server shutdowns. *
|
|
|
537 * *
|
|
|
538 * This is unbelievably horrible. *
|
|
|
539 * *
|
|
|
540 \********************************************************************/
|
|
|
541
|
|
|
542 static AuBool
|
|
|
543 CatchIoErrorAndJump (AuServer *old_aud)
|
|
|
544 {
|
|
|
545 if (old_aud)
|
|
|
546 warn ("Audio Server connection broken");
|
|
|
547 else
|
|
|
548 warn ("Audio Server connection broken because of signal");
|
|
|
549
|
|
|
550 #ifdef XTEVENTS
|
|
|
551 #ifdef XTOOLKIT
|
|
|
552 {
|
|
|
553 AuXtAppRemoveAudioHandler (aud, input_id);
|
|
|
554 }
|
|
|
555 #endif
|
|
|
556
|
|
|
557 if (aud)
|
|
|
558 AuCloseServer (aud);
|
|
|
559 aud = NULL;
|
|
|
560 sounds_in_play = 0;
|
|
|
561
|
|
|
562 longjmp (AuXtErrorJump, 1);
|
|
|
563
|
|
|
564 #else /* not XTEVENTS */
|
|
|
565
|
|
|
566 if (aud)
|
|
|
567 AuCloseServer (aud);
|
|
|
568 aud = NULL;
|
|
|
569 sounds_in_play = 0;
|
|
|
570 longjmp (AuXtErrorJump, 1);
|
|
|
571
|
|
|
572 #endif /* XTEVENTS */
|
|
|
573 }
|
|
|
574
|
|
|
575 SIGTYPE
|
|
|
576 sigpipe_handle (int signo)
|
|
|
577 {
|
|
|
578 CatchIoErrorAndJump (NULL);
|
|
|
579 }
|
|
|
580
|
|
|
581 static AuBool
|
|
|
582 CatchErrorAndJump (AuServer *old_aud,
|
|
|
583 AuErrorEvent *event)
|
|
|
584 {
|
|
|
585 return CatchIoErrorAndJump (old_aud);
|
|
|
586 }
|
|
|
587
|
|
|
588 #endif /* ROBUST_PLAY */
|
|
|
589
|
|
|
590 /********************************************************************\
|
|
|
591 * *
|
|
|
592 * This code is here because the nas Sound library doesn't *
|
|
|
593 * support playing from a file buffered in memory. It's a fairly *
|
|
|
594 * direct translation of the file-based equivalent. *
|
|
|
595 * *
|
|
|
596 * Since we don't have a filename, samples with no comment field *
|
|
|
597 * are named by a section of their content. *
|
|
|
598 * *
|
|
|
599 \********************************************************************/
|
|
|
600
|
|
|
601 /* Create a name from the sound. */
|
|
|
602
|
|
|
603 static char *
|
|
|
604 NameFromData (CONST unsigned char *buf,
|
|
|
605 int len)
|
|
|
606
|
|
|
607 {
|
|
|
608 unsigned char name[9];
|
|
|
609 int i;
|
|
|
610 char *s;
|
|
|
611
|
|
|
612 buf+=len/2;
|
|
|
613 len -= len/2;
|
|
|
614
|
|
|
615 i=0;
|
|
|
616 while (i<8 && len >0)
|
|
|
617 {
|
|
|
618 while (*buf < 32 && len>0)
|
|
|
619 {
|
|
|
620 buf++;
|
|
|
621 len--;
|
|
|
622 }
|
|
|
623 name[i]= *buf;
|
|
|
624 i++;
|
|
|
625 buf++;
|
|
|
626 len--;
|
|
|
627 }
|
|
|
628
|
|
|
629 name[i]='\0';
|
|
|
630
|
|
|
631 if (i==8)
|
|
|
632 {
|
|
|
633 strcpy (s=malloc (10), name);
|
|
|
634 }
|
|
|
635 else
|
|
|
636 {
|
|
|
637 strcpy (s=malloc (15), "short sound");
|
|
|
638 }
|
|
|
639
|
|
|
640 return s;
|
|
|
641 }
|
|
|
642
|
|
|
643 /* Code to do a pseudo-open on a data buffer. Only for snd files at the
|
|
|
644 moment.
|
|
|
645 */
|
|
|
646
|
|
|
647 static SndInfo *
|
|
|
648 SndOpenDataForReading (CONST char *data,
|
|
|
649 int length)
|
|
|
650
|
|
|
651 {
|
|
|
652 SndInfo *si;
|
|
|
653 int size;
|
|
|
654
|
|
|
655 if (!(si = (SndInfo *) malloc (sizeof (SndInfo))))
|
|
|
656 return NULL;
|
|
|
657
|
|
|
658 si->comment = NULL;
|
|
|
659 si->writing = 0;
|
|
|
660
|
|
|
661 memcpy (&si->h, data, sizeof (SndHeader));
|
|
|
662
|
|
|
663 if (LITTLE_ENDIAN)
|
|
|
664 {
|
|
|
665 char n;
|
|
|
666
|
|
|
667 swapl (&si->h.magic, n);
|
|
|
668 swapl (&si->h.dataOffset, n);
|
|
|
669 swapl (&si->h.dataSize, n);
|
|
|
670 swapl (&si->h.format, n);
|
|
|
671 swapl (&si->h.sampleRate, n);
|
|
|
672 swapl (&si->h.tracks, n);
|
|
|
673 }
|
|
|
674
|
|
|
675 if (si->h.magic != SND_MAGIC_NUM)
|
|
|
676 {
|
|
|
677 free (si);
|
|
|
678 return NULL;
|
|
|
679 }
|
|
|
680
|
|
|
681 size = si->h.dataOffset - sizeof (SndHeader);
|
|
|
682
|
|
|
683 if (size)
|
|
|
684 {
|
|
|
685 if (!(si->comment = (char *) malloc (size + 1)))
|
|
|
686 {
|
|
|
687 free (si);
|
|
|
688 return NULL;
|
|
|
689 }
|
|
|
690
|
|
|
691 memcpy (si->comment, data+sizeof (SndHeader), size);
|
|
|
692
|
|
|
693 *(si->comment + size) = 0;
|
|
|
694 if (*si->comment == '\0')
|
|
|
695 si->comment =
|
|
|
696 NameFromData (data+si->h.dataOffset, length-si->h.dataOffset);
|
|
|
697 }
|
|
|
698 else
|
|
|
699 si->comment = NameFromData (data+si->h.dataOffset, length-si->h.dataOffset);
|
|
|
700
|
|
|
701 si->h.dataSize = length-si->h.dataOffset;
|
|
|
702
|
|
|
703 si->fp=NULL;
|
|
|
704
|
|
|
705 return si;
|
|
|
706 }
|
|
|
707
|
|
|
708 static Sound
|
|
|
709 SoundOpenDataForReading (unsigned char *data,
|
|
|
710 int length)
|
|
|
711
|
|
|
712 {
|
|
|
713 Sound s;
|
|
|
714
|
|
|
715 if (!(s = (Sound) malloc (sizeof (SoundRec))))
|
|
|
716 return NULL;
|
|
|
717
|
|
|
718 if ((s->formatInfo = SndOpenDataForReading (data, length))==NULL)
|
|
|
719 {
|
|
|
720 free (s);
|
|
|
721 return NULL;
|
|
|
722 }
|
|
|
723
|
|
|
724
|
|
|
725 if (!(SoundFileInfo[SoundFileFormatSnd].toSound) (s))
|
|
|
726 {
|
|
|
727 SndCloseFile (s->formatInfo);
|
|
|
728 free (s);
|
|
|
729 return NULL;
|
|
|
730 }
|
|
|
731
|
|
|
732 return s;
|
|
|
733 }
|
|
|
734
|
