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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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16
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55 # include <stdlib.h>
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56 # include <stdarg.h>
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57 # include <string.h>
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58 #endif
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0
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59
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16
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60 #ifdef HAVE_UNISTD_H
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61 #include <unistd.h>
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0
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62 #endif
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63
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64 #include <stdio.h>
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65 #include <config.h> /* for CONST in syssignal.h (neal@ctd.comsat.com) */
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66 #include "syssignal.h"
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67
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68 #include <audio/audiolib.h>
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69 #include <audio/soundlib.h>
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70 #include <audio/snd.h>
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71 #include <audio/fileutil.h>
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72
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73 #ifdef emacs
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74
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75 # include <config.h>
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76 # include "lisp.h"
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77
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78 # define XTOOLKIT
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79 # define XTEVENTS
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80 # define ROBUST_PLAY
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81 # define CACHE_SOUNDS
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82
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83 /*
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84 * For old NAS libraries, force playing to be synchronous
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85 * and declare the long jump point locally.
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86 */
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87
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88 # if defined (NAS_NO_ERROR_JUMP)
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89
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90 # undef XTEVENTS
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91
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92 # include <setjmp.h>
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93 jmp_buf AuXtErrorJump;
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94 # endif
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95
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96 /* The GETTEXT is correct. --ben */
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97 # define warn(str) warn_when_safe (Qnas, Qwarning, "nas: %s ", GETTEXT (str))
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98
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99 # define play_sound_file nas_play_sound_file
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100 # define play_sound_data nas_play_sound_data
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101 # define wait_for_sounds nas_wait_for_sounds
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102 # define init_play nas_init_play
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103 # define close_down_play nas_close_down_play
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104
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105 #else /* !emacs */
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106 # define warn(str) fprintf (stderr, "%s\n", (str))
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107 # define CONST const
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108 #endif /* emacs */
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109
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110 #ifdef XTOOLKIT
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111 # include <X11/Intrinsic.h>
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112 # include <audio/Xtutil.h>
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113 #endif
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114
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115 #if defined (ROBUST_PLAY)
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116 static AuBool CatchIoErrorAndJump (AuServer *aud);
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117 static AuBool CatchErrorAndJump (AuServer *aud, AuErrorEvent *event);
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118 SIGTYPE sigpipe_handle (int signo);
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119 #endif
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120
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121 extern Lisp_Object Vsynchronous_sounds;
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122
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123 static Sound SoundOpenDataForReading (unsigned char *data, int length);
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124
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125 static AuServer *aud;
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126
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127 /* count of sounds currently being played. */
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128 static int sounds_in_play;
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129
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130
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131 #ifdef XTOOLKIT
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132 static Display *aud_server;
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133 static XtInputId input_id;
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134 #else
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135 static char *aud_server;
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136 #endif /* XTOOLKIT */
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137
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138 char *
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139 init_play (
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140 #ifdef XTOOLKIT
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141 Display *display
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142 #else
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143 char *server
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144 #endif
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145 )
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146 {
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147 char *err_message;
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148 SIGTYPE (*old_sigpipe) ();
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149
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150 #ifdef XTOOLKIT
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151 char * server = DisplayString (display);
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152 XtAppContext app_context = XtDisplayToApplicationContext (display);
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153
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154 aud_server = display;
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155 #else
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156
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157 aud_server = server;
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158 #endif
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159
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160 #ifdef ROBUST_PLAY
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161 old_sigpipe = signal (SIGPIPE, sigpipe_handle);
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162 if (setjmp (AuXtErrorJump))
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163 {
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164 signal (SIGPIPE, old_sigpipe);
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165 #ifdef emacs
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166 start_interrupts ();
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167 #endif
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168 return "error in NAS";
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169 }
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170 #endif
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171
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172 #if defined (ROBUST_PLAY) && !defined (NAS_NO_ERROR_JUMP)
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173 AuDefaultIOErrorHandler = CatchIoErrorAndJump;
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174 AuDefaultErrorHandler = CatchErrorAndJump;
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175 #endif
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176
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177 #ifdef emacs
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178 stop_interrupts ();
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179 #endif
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180 aud = AuOpenServer (server, 0, NULL, 0, NULL, &err_message);
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181 #ifdef emacs
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182 start_interrupts ();
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183 #endif
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184 if (!aud)
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185 {
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186 #ifdef ROBUST_PLAY
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187 signal (SIGPIPE, old_sigpipe);
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188 #endif
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189 if (err_message == NULL)
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190 return "Can't connect to audio server";
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191 else
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192 return err_message;
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193 }
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194
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195 #if defined (ROBUST_PLAY)
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196 # if defined (NAS_NO_ERROR_JUMP)
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197 aud->funcs.ioerror_handler = CatchIoErrorAndJump;
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198 aud->funcs.error_handler = CatchErrorAndJump;
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199 # else /* !NAS_NO_ERROR_JUMP */
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200 AuDefaultIOErrorHandler = NULL;
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201 AuDefaultErrorHandler = NULL;
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202 # endif
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203 #endif
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204
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205 #ifdef XTEVENTS
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206 input_id = AuXtAppAddAudioHandler (app_context, aud);
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207 #endif
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208
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209 #ifdef CACHE_SOUNDS
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210 AuSetCloseDownMode (aud, AuCloseDownRetainPermanent, NULL);
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211 #endif
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212
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213 #ifdef ROBUST_PLAY
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214 signal (SIGPIPE, old_sigpipe);
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215 #endif
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216
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217 sounds_in_play = 0;
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218
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219 return NULL;
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220 }
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221
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222 void
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223 close_down_play (void)
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224
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225 {
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226 AuCloseServer (aud);
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227 warn ("disconnected from audio server");
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228 }
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229
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230 /********************************************************************\
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231 * *
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232 * Callback which is run when the sound finishes playing. *
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233 * *
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234 \********************************************************************/
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235
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236 static void
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237 doneCB (AuServer *aud,
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238 AuEventHandlerRec *handler,
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239 AuEvent *ev,
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240 AuPointer data)
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241 {
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242 int *in_play_p = (int *) data;
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243
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244 (*in_play_p) --;
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245 }
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246
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247 #ifdef CACHE_SOUNDS
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248
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249 /********************************************************************\
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250 * *
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251 * Play a sound by playing the relevant bucket, if any or *
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252 * downloading it if not. *
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253 * *
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254 \********************************************************************/
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255
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256 static void
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257 do_caching_play (Sound s,
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258 int volume,
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259 unsigned char *buf)
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260
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261 {
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262 AuBucketAttributes *list, b;
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263 AuBucketID id;
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264 int n;
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265
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266 AuSetString (AuBucketDescription (&b),
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267 AuStringLatin1, strlen (SoundComment (s)), SoundComment (s));
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268
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269 list = AuListBuckets (aud, AuCompCommonDescriptionMask, &b, &n, NULL);
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270
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271 if (list == NULL)
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272 {
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273 unsigned char *my_buf;
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274
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275 if (buf==NULL)
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276 {
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277 if ((my_buf=malloc (SoundNumBytes (s)))==NULL)
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278 {
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279 return;
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280 }
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281
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282 if (SoundReadFile (my_buf, SoundNumBytes (s), s) != SoundNumBytes (s))
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283 {
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284 free (my_buf);
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285 return;
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286 }
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287 }
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288 else
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289 my_buf=buf;
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290
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291 id = AuSoundCreateBucketFromData (aud,
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292 s,
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293 my_buf,
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294 AuAccessAllMasks,
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295 NULL,
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296 NULL);
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297 if (buf == NULL)
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298 free (my_buf);
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299 }
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300 else /* found cached sound */
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301 {
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302 id = AuBucketIdentifier (list);
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303 AuFreeBucketAttributes (aud, n, list);
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304 }
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305
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306 sounds_in_play++;
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307
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308 AuSoundPlayFromBucket (aud,
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309 id,
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310 AuNone,
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311 AuFixedPointFromFraction (volume, 100),
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312 doneCB, (AuPointer) &sounds_in_play,
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313 1,
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314 NULL, NULL,
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315 NULL, NULL);
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316
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317 }
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318 #endif /* CACHE_SOUNDS */
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319
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320
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321 void
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322 wait_for_sounds (void)
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323
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324 {
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325 AuEvent ev;
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326
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327 while (sounds_in_play>0)
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328 {
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329 AuNextEvent (aud, AuTrue, &ev);
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330 AuDispatchEvent (aud, &ev);
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331 }
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332 }
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333
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334 int
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335 play_sound_file (char *sound_file,
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336 int volume)
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337 {
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338 SIGTYPE (*old_sigpipe) ();
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339
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340 #ifdef ROBUST_PLAY
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341 old_sigpipe=signal (SIGPIPE, sigpipe_handle);
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342 if (setjmp (AuXtErrorJump))
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343 {
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344 signal (SIGPIPE, old_sigpipe);
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345 return 0;
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346 }
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347 #endif
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348
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349 if (aud==NULL)
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350 if (aud_server != NULL)
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351 {
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352 char *m;
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353 /* attempt to reconect */
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354 if ((m=init_play (aud_server))!= NULL)
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355 {
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356
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357 #ifdef ROBUST_PLAY
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358 signal (SIGPIPE, old_sigpipe);
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359 #endif
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360 return 0;
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361 }
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362 }
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363 else
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364 {
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365 warn ("Attempt to play with no audio init\n");
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366 #ifdef ROBUST_PLAY
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367 signal (SIGPIPE, old_sigpipe);
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368 #endif
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369 return 0;
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370 }
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371
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372 #ifndef CACHE_SOUNDS
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373 sounds_in_play++;
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374 AuSoundPlayFromFile (aud,
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375 sound_file,
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376 AuNone,
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377 AuFixedPointFromFraction (volume,100),
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378 doneCB, (AuPointer) &sounds_in_play,
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379 NULL,
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380 NULL,
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381 NULL,
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382 NULL);
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383 #else
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384 /* Cache the sounds in buckets on the server */
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385
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386 {
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387 Sound s;
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388
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389 if ((s = SoundOpenFileForReading (sound_file))==NULL)
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390 {
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391 #ifdef ROBUST_PLAY
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392 signal (SIGPIPE, old_sigpipe);
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393 #endif
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394 return 0;
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395 }
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396
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397 if (SoundComment (s) == NULL || SoundComment (s)[0] == '\0')
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398 {
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399 SoundComment (s) = FileCommentFromFilename (sound_file);
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400 }
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401
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402 do_caching_play (s, volume, NULL);
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403
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404 SoundCloseFile (s);
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405
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406 }
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407 #endif /* CACHE_SOUNDS */
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408
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409 #ifndef XTEVENTS
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410 wait_for_sounds ();
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411 #else
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412 if (!NILP (Vsynchronous_sounds))
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413 {
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414 wait_for_sounds ();
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415 }
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416 #endif
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417
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418 #ifdef ROBUST_PLAY
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419 signal (SIGPIPE, old_sigpipe);
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420 #endif
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421
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422 return 1;
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423 }
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424
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425 int
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426 play_sound_data (unsigned char *data,
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427 int length,
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428 int volume)
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429 {
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430 Sound s;
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431 int offset;
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432 SIGTYPE (*old_sigpipe) ();
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433
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434 #if !defined (XTEVENTS)
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435 AuEvent ev;
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436 #endif
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437
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438 #ifdef ROBUST_PLAY
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439 old_sigpipe = signal (SIGPIPE, sigpipe_handle);
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440 if (setjmp (AuXtErrorJump) !=0)
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441 {
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442 signal (SIGPIPE, old_sigpipe);
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443 return 0;
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444 }
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445 #endif
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446
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447
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448 if (aud == NULL)
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449 if (aud_server != NULL)
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450 {
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451 char *m;
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452 /* attempt to reconect */
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453 if ((m = init_play (aud_server)) != NULL)
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454 {
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455 #ifdef ROBUST_PLAY
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456 signal (SIGPIPE, old_sigpipe);
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457 #endif
|
|
|
458 return 0;
|
|
|
459 }
|
|
|
460 }
|
|
|
461 else
|
|
|
462 {
|
|
|
463 warn ("Attempt to play with no audio init\n");
|
|
|
464 #ifdef ROBUST_PLAY
|
|
|
465 signal (SIGPIPE, old_sigpipe);
|
|
|
466 #endif
|
|
|
467 return 0;
|
|
|
468 }
|
|
|
469
|
|
|
470 if ((s=SoundOpenDataForReading (data, length))==NULL)
|
|
|
471 {
|
|
|
472 warn ("unknown sound type");
|
|
|
473 #ifdef ROBUST_PLAY
|
|
|
474 signal (SIGPIPE, old_sigpipe);
|
|
|
475 #endif
|
|
|
476 return 0;
|
|
|
477 }
|
|
|
478
|
|
|
479 if (SoundFileFormat (s) == SoundFileFormatSnd)
|
|
|
480 {
|
|
|
481 /* hack, hack */
|
|
|
482 offset = ((SndInfo *) (s->formatInfo))->h.dataOffset;
|
|
|
483 }
|
|
|
484 else
|
|
|
485 {
|
|
|
486 warn ("only understand snd files at the moment");
|
|
|
487 SoundCloseFile (s);
|
|
|
488 #ifdef ROBUST_PLAY
|
|
|
489 signal (SIGPIPE, old_sigpipe);
|
|
|
490 #endif
|
|
|
491 return 0;
|
|
|
492 }
|
|
|
493
|
|
|
494 #ifndef CACHE_SOUNDS
|
|
|
495 sounds_in_play++;
|
|
|
496 AuSoundPlayFromData (aud,
|
|
|
497 s,
|
|
|
498 data+offset,
|
|
|
499 AuNone,
|
|
|
500 AuFixedPointFromFraction (volume,100),
|
|
|
501 doneCB, (AuPointer) &sounds_in_play,
|
|
|
502 NULL,
|
|
|
503 NULL,
|
|
|
504 NULL,
|
|
|
505 NULL);
|
|
|
506 #else
|
|
|
507 /* Cache the sounds in buckets on the server */
|
|
|
508
|
|
|
509 {
|
|
|
510 do_caching_play (s, volume, data+offset);
|
|
|
511 }
|
|
|
512 #endif /* CACHE_SOUNDS */
|
|
|
513
|
|
|
514
|
|
|
515 #ifndef XTEVENTS
|
|
|
516 wait_for_sounds ();
|
|
|
517 #else
|
|
|
518 if (!NILP (Vsynchronous_sounds))
|
|
|
519 {
|
|
|
520 wait_for_sounds ();
|
|
|
521 }
|
|
|
522 #endif
|
|
|
523
|
|
|
524 SoundCloseFile (s);
|
|
|
525
|
|
|
526 #ifdef ROBUST_PLAY
|
|
|
527 signal (SIGPIPE, old_sigpipe);
|
|
|
528 #endif
|
|
|
529
|
|
|
530 return 1;
|
|
|
531 }
|
|
|
532
|
|
|
533 #if defined (ROBUST_PLAY)
|
|
|
534
|
|
|
535 /********************************************************************\
|
|
|
536 * *
|
|
|
537 * Code to protect the client from server shutdowns. *
|
|
|
538 * *
|
|
|
539 * This is unbelievably horrible. *
|
|
|
540 * *
|
|
|
541 \********************************************************************/
|
|
|
542
|
|
|
543 static AuBool
|
|
|
544 CatchIoErrorAndJump (AuServer *old_aud)
|
|
|
545 {
|
|
|
546 if (old_aud)
|
|
|
547 warn ("Audio Server connection broken");
|
|
|
548 else
|
|
|
549 warn ("Audio Server connection broken because of signal");
|
|
|
550
|
|
|
551 #ifdef XTEVENTS
|
|
|
552 #ifdef XTOOLKIT
|
|
|
553 {
|
|
|
554 AuXtAppRemoveAudioHandler (aud, input_id);
|
|
|
555 }
|
|
|
556 #endif
|
|
|
557
|
|
|
558 if (aud)
|
|
|
559 AuCloseServer (aud);
|
|
|
560 aud = NULL;
|
|
|
561 sounds_in_play = 0;
|
|
|
562
|
|
|
563 longjmp (AuXtErrorJump, 1);
|
|
|
564
|
|
|
565 #else /* not XTEVENTS */
|
|
|
566
|
|
|
567 if (aud)
|
|
|
568 AuCloseServer (aud);
|
|
|
569 aud = NULL;
|
|
|
570 sounds_in_play = 0;
|
|
|
571 longjmp (AuXtErrorJump, 1);
|
|
|
572
|
|
|
573 #endif /* XTEVENTS */
|
|
|
574 }
|
|
|
575
|
|
|
576 SIGTYPE
|
|
|
577 sigpipe_handle (int signo)
|
|
|
578 {
|
|
|
579 CatchIoErrorAndJump (NULL);
|
|
|
580 }
|
|
|
581
|
|
|
582 static AuBool
|
|
|
583 CatchErrorAndJump (AuServer *old_aud,
|
|
|
584 AuErrorEvent *event)
|
|
|
585 {
|
|
|
586 return CatchIoErrorAndJump (old_aud);
|
|
|
587 }
|
|
|
588
|
|
|
589 #endif /* ROBUST_PLAY */
|
|
|
590
|
|
|
591 /********************************************************************\
|
|
|
592 * *
|
|
|
593 * This code is here because the nas Sound library doesn't *
|
|
|
594 * support playing from a file buffered in memory. It's a fairly *
|
|
|
595 * direct translation of the file-based equivalent. *
|
|
|
596 * *
|
|
|
597 * Since we don't have a filename, samples with no comment field *
|
|
|
598 * are named by a section of their content. *
|
|
|
599 * *
|
|
|
600 \********************************************************************/
|
|
|
601
|
|
|
602 /* Create a name from the sound. */
|
|
|
603
|
|
|
604 static char *
|
|
|
605 NameFromData (CONST unsigned char *buf,
|
|
|
606 int len)
|
|
|
607
|
|
|
608 {
|
|
|
609 unsigned char name[9];
|
|
|
610 int i;
|
|
|
611 char *s;
|
|
|
612
|
|
|
613 buf+=len/2;
|
|
|
614 len -= len/2;
|
|
|
615
|
|
|
616 i=0;
|
|
|
617 while (i<8 && len >0)
|
|
|
618 {
|
|
|
619 while (*buf < 32 && len>0)
|
|
|
620 {
|
|
|
621 buf++;
|
|
|
622 len--;
|
|
|
623 }
|
|
|
624 name[i]= *buf;
|
|
|
625 i++;
|
|
|
626 buf++;
|
|
|
627 len--;
|
|
|
628 }
|
|
|
629
|
|
|
630 name[i]='\0';
|
|
|
631
|
|
|
632 if (i==8)
|
|
|
633 {
|
|
|
634 strcpy (s=malloc (10), name);
|
|
|
635 }
|
|
|
636 else
|
|
|
637 {
|
|
|
638 strcpy (s=malloc (15), "short sound");
|
|
|
639 }
|
|
|
640
|
|
|
641 return s;
|
|
|
642 }
|
|
|
643
|
|
|
644 /* Code to do a pseudo-open on a data buffer. Only for snd files at the
|
|
|
645 moment.
|
|
|
646 */
|
|
|
647
|
|
|
648 static SndInfo *
|
|
|
649 SndOpenDataForReading (CONST char *data,
|
|
|
650 int length)
|
|
|
651
|
|
|
652 {
|
|
|
653 SndInfo *si;
|
|
|
654 int size;
|
|
|
655
|
|
|
656 if (!(si = (SndInfo *) malloc (sizeof (SndInfo))))
|
|
|
657 return NULL;
|
|
|
658
|
|
|
659 si->comment = NULL;
|
|
|
660 si->writing = 0;
|
|
|
661
|
|
|
662 memcpy (&si->h, data, sizeof (SndHeader));
|
|
|
663
|
|
|
664 if (LITTLE_ENDIAN)
|
|
|
665 {
|
|
|
666 char n;
|
|
|
667
|
|
|
668 swapl (&si->h.magic, n);
|
|
|
669 swapl (&si->h.dataOffset, n);
|
|
|
670 swapl (&si->h.dataSize, n);
|
|
|
671 swapl (&si->h.format, n);
|
|
|
672 swapl (&si->h.sampleRate, n);
|
|
|
673 swapl (&si->h.tracks, n);
|
|
|
674 }
|
|
|
675
|
|
|
676 if (si->h.magic != SND_MAGIC_NUM)
|
|
|
677 {
|
|
|
678 free (si);
|
|
|
679 return NULL;
|
|
|
680 }
|
|
|
681
|
|
|
682 size = si->h.dataOffset - sizeof (SndHeader);
|
|
|
683
|
|
|
684 if (size)
|
|
|
685 {
|
|
|
686 if (!(si->comment = (char *) malloc (size + 1)))
|
|
|
687 {
|
|
|
688 free (si);
|
|
|
689 return NULL;
|
|
|
690 }
|
|
|
691
|
|
|
692 memcpy (si->comment, data+sizeof (SndHeader), size);
|
|
|
693
|
|
|
694 *(si->comment + size) = 0;
|
|
|
695 if (*si->comment == '\0')
|
|
|
696 si->comment =
|
|
|
697 NameFromData (data+si->h.dataOffset, length-si->h.dataOffset);
|
|
|
698 }
|
|
|
699 else
|
|
|
700 si->comment = NameFromData (data+si->h.dataOffset, length-si->h.dataOffset);
|
|
|
701
|
|
|
702 si->h.dataSize = length-si->h.dataOffset;
|
|
|
703
|
|
|
704 si->fp=NULL;
|
|
|
705
|
|
|
706 return si;
|
|
|
707 }
|
|
|
708
|
|
|
709 static Sound
|
|
|
710 SoundOpenDataForReading (unsigned char *data,
|
|
|
711 int length)
|
|
|
712
|
|
|
713 {
|
|
|
714 Sound s;
|
|
|
715
|
|
|
716 if (!(s = (Sound) malloc (sizeof (SoundRec))))
|
|
|
717 return NULL;
|
|
|
718
|
|
|
719 if ((s->formatInfo = SndOpenDataForReading (data, length))==NULL)
|
|
|
720 {
|
|
|
721 free (s);
|
|
|
722 return NULL;
|
|
|
723 }
|
|
|
724
|
|
|
725
|
|
|
726 if (!(SoundFileInfo[SoundFileFormatSnd].toSound) (s))
|
|
|
727 {
|
|
|
728 SndCloseFile (s->formatInfo);
|
|
|
729 free (s);
|
|
|
730 return NULL;
|
|
|
731 }
|
|
|
732
|
|
|
733 return s;
|
|
|
734 }
|
|
|
735
|
