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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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272
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54 #ifdef emacs
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55 #include <config.h>
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56 #include "lisp.h"
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57 #endif
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58
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82
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59 #if __STDC__ || defined (STDC_HEADERS)
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60 # include <stdlib.h>
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61 # include <stdarg.h>
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62 # include <string.h>
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16
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63 #endif
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0
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64
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16
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65 #ifdef HAVE_UNISTD_H
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66 #include <unistd.h>
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0
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67 #endif
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68
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69 #include <stdio.h>
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70 #include "syssignal.h"
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71
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272
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72 #undef LITTLE_ENDIAN
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73 #undef BIG_ENDIAN
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0
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74 #include <audio/audiolib.h>
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75 #include <audio/soundlib.h>
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76 #include <audio/snd.h>
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77 #include <audio/fileutil.h>
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78
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79 #ifdef emacs
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80
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81 # define XTOOLKIT
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82 # define XTEVENTS
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83 # define ROBUST_PLAY
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84 # define CACHE_SOUNDS
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85
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86 /*
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87 * For old NAS libraries, force playing to be synchronous
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88 * and declare the long jump point locally.
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89 */
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90
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91 # if defined (NAS_NO_ERROR_JUMP)
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92
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93 # undef XTEVENTS
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94
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95 # include <setjmp.h>
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96 jmp_buf AuXtErrorJump;
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97 # endif
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98
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99 /* The GETTEXT is correct. --ben */
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100 # define warn(str) warn_when_safe (Qnas, Qwarning, "nas: %s ", GETTEXT (str))
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101
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102 # define play_sound_file nas_play_sound_file
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103 # define play_sound_data nas_play_sound_data
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104 # define wait_for_sounds nas_wait_for_sounds
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105 # define init_play nas_init_play
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106 # define close_down_play nas_close_down_play
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107
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108 #else /* !emacs */
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109 # define warn(str) fprintf (stderr, "%s\n", (str))
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110 # define CONST const
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111 #endif /* emacs */
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112
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113 #ifdef XTOOLKIT
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114 # include <X11/Intrinsic.h>
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115 # include <audio/Xtutil.h>
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116 #endif
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117
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118 #if defined (ROBUST_PLAY)
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119 static AuBool CatchIoErrorAndJump (AuServer *aud);
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120 static AuBool CatchErrorAndJump (AuServer *aud, AuErrorEvent *event);
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121 SIGTYPE sigpipe_handle (int signo);
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122 #endif
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123
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124 extern Lisp_Object Vsynchronous_sounds;
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125
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126 static Sound SoundOpenDataForReading (unsigned char *data, int length);
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127
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128 static AuServer *aud;
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129
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130 /* count of sounds currently being played. */
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131 static int sounds_in_play;
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132
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133
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134 #ifdef XTOOLKIT
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135 static Display *aud_server;
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136 static XtInputId input_id;
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137 #else
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138 static char *aud_server;
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139 #endif /* XTOOLKIT */
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140
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141 char *
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142 init_play (
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143 #ifdef XTOOLKIT
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144 Display *display
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145 #else
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146 char *server
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147 #endif
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148 )
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149 {
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150 char *err_message;
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151 SIGTYPE (*old_sigpipe) ();
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152
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153 #ifdef XTOOLKIT
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154 char * server = DisplayString (display);
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155 XtAppContext app_context = XtDisplayToApplicationContext (display);
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156
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157 aud_server = display;
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158 #else
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159
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160 aud_server = server;
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161 #endif
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162
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163 #ifdef ROBUST_PLAY
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164 old_sigpipe = signal (SIGPIPE, sigpipe_handle);
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165 if (setjmp (AuXtErrorJump))
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166 {
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167 signal (SIGPIPE, old_sigpipe);
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168 #ifdef emacs
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169 start_interrupts ();
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170 #endif
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171 return "error in NAS";
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172 }
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173 #endif
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174
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175 #if defined (ROBUST_PLAY) && !defined (NAS_NO_ERROR_JUMP)
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176 AuDefaultIOErrorHandler = CatchIoErrorAndJump;
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177 AuDefaultErrorHandler = CatchErrorAndJump;
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178 #endif
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179
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180 #ifdef emacs
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181 stop_interrupts ();
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182 #endif
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183 aud = AuOpenServer (server, 0, NULL, 0, NULL, &err_message);
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184 #ifdef emacs
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185 start_interrupts ();
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186 #endif
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187 if (!aud)
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188 {
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189 #ifdef ROBUST_PLAY
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190 signal (SIGPIPE, old_sigpipe);
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191 #endif
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192 if (err_message == NULL)
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193 return "Can't connect to audio server";
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194 else
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195 return err_message;
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196 }
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197
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198 #if defined (ROBUST_PLAY)
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199 # if defined (NAS_NO_ERROR_JUMP)
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200 aud->funcs.ioerror_handler = CatchIoErrorAndJump;
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201 aud->funcs.error_handler = CatchErrorAndJump;
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202 # else /* !NAS_NO_ERROR_JUMP */
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203 AuDefaultIOErrorHandler = NULL;
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204 AuDefaultErrorHandler = NULL;
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205 # endif
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206 #endif
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207
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208 #ifdef XTEVENTS
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209 input_id = AuXtAppAddAudioHandler (app_context, aud);
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210 #endif
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211
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212 #ifdef CACHE_SOUNDS
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213 AuSetCloseDownMode (aud, AuCloseDownRetainPermanent, NULL);
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214 #endif
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215
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216 #ifdef ROBUST_PLAY
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217 signal (SIGPIPE, old_sigpipe);
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218 #endif
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219
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220 sounds_in_play = 0;
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221
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222 return NULL;
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223 }
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224
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225 void
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226 close_down_play (void)
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227
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228 {
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229 AuCloseServer (aud);
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230 warn ("disconnected from audio server");
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231 }
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232
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233 /********************************************************************\
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234 * *
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235 * Callback which is run when the sound finishes playing. *
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236 * *
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237 \********************************************************************/
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238
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239 static void
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240 doneCB (AuServer *aud,
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241 AuEventHandlerRec *handler,
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242 AuEvent *ev,
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243 AuPointer data)
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244 {
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245 int *in_play_p = (int *) data;
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246
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247 (*in_play_p) --;
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248 }
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249
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250 #ifdef CACHE_SOUNDS
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251
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252 /********************************************************************\
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253 * *
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254 * Play a sound by playing the relevant bucket, if any or *
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255 * downloading it if not. *
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256 * *
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257 \********************************************************************/
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258
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259 static void
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260 do_caching_play (Sound s,
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261 int volume,
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262 unsigned char *buf)
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263
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264 {
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265 AuBucketAttributes *list, b;
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266 AuBucketID id;
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267 int n;
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268
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269 AuSetString (AuBucketDescription (&b),
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270 AuStringLatin1, strlen (SoundComment (s)), SoundComment (s));
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271
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272 list = AuListBuckets (aud, AuCompCommonDescriptionMask, &b, &n, NULL);
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273
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274 if (list == NULL)
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275 {
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276 unsigned char *my_buf;
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277
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278 if (buf==NULL)
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279 {
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280 if ((my_buf=malloc (SoundNumBytes (s)))==NULL)
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281 {
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282 return;
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283 }
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284
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285 if (SoundReadFile (my_buf, SoundNumBytes (s), s) != SoundNumBytes (s))
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286 {
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287 free (my_buf);
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288 return;
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289 }
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290 }
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291 else
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292 my_buf=buf;
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293
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294 id = AuSoundCreateBucketFromData (aud,
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295 s,
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296 my_buf,
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297 AuAccessAllMasks,
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298 NULL,
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299 NULL);
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300 if (buf == NULL)
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301 free (my_buf);
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302 }
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303 else /* found cached sound */
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304 {
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305 id = AuBucketIdentifier (list);
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306 AuFreeBucketAttributes (aud, n, list);
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307 }
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308
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309 sounds_in_play++;
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310
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311 AuSoundPlayFromBucket (aud,
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312 id,
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313 AuNone,
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314 AuFixedPointFromFraction (volume, 100),
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315 doneCB, (AuPointer) &sounds_in_play,
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316 1,
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317 NULL, NULL,
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318 NULL, NULL);
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319
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320 }
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321 #endif /* CACHE_SOUNDS */
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322
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323
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324 void
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325 wait_for_sounds (void)
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326
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327 {
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328 AuEvent ev;
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329
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330 while (sounds_in_play>0)
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331 {
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332 AuNextEvent (aud, AuTrue, &ev);
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333 AuDispatchEvent (aud, &ev);
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334 }
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335 }
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336
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337 int
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338 play_sound_file (char *sound_file,
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339 int volume)
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340 {
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341 SIGTYPE (*old_sigpipe) ();
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342
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343 #ifdef ROBUST_PLAY
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344 old_sigpipe=signal (SIGPIPE, sigpipe_handle);
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345 if (setjmp (AuXtErrorJump))
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346 {
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347 signal (SIGPIPE, old_sigpipe);
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348 return 0;
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349 }
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350 #endif
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351
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263
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352 if (aud==NULL) {
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0
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353 if (aud_server != NULL)
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354 {
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355 char *m;
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356 /* attempt to reconect */
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357 if ((m=init_play (aud_server))!= NULL)
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358 {
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359
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360 #ifdef ROBUST_PLAY
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361 signal (SIGPIPE, old_sigpipe);
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362 #endif
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363 return 0;
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364 }
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365 }
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366 else
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367 {
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368 warn ("Attempt to play with no audio init\n");
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369 #ifdef ROBUST_PLAY
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370 signal (SIGPIPE, old_sigpipe);
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371 #endif
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372 return 0;
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373 }
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263
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374 }
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0
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375
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376 #ifndef CACHE_SOUNDS
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377 sounds_in_play++;
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378 AuSoundPlayFromFile (aud,
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379 sound_file,
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380 AuNone,
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381 AuFixedPointFromFraction (volume,100),
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382 doneCB, (AuPointer) &sounds_in_play,
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383 NULL,
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384 NULL,
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385 NULL,
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386 NULL);
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387 #else
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388 /* Cache the sounds in buckets on the server */
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389
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390 {
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391 Sound s;
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392
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393 if ((s = SoundOpenFileForReading (sound_file))==NULL)
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394 {
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395 #ifdef ROBUST_PLAY
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396 signal (SIGPIPE, old_sigpipe);
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397 #endif
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398 return 0;
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399 }
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400
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401 if (SoundComment (s) == NULL || SoundComment (s)[0] == '\0')
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402 {
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403 SoundComment (s) = FileCommentFromFilename (sound_file);
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404 }
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405
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406 do_caching_play (s, volume, NULL);
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407
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408 SoundCloseFile (s);
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409
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410 }
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411 #endif /* CACHE_SOUNDS */
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412
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413 #ifndef XTEVENTS
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414 wait_for_sounds ();
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415 #else
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416 if (!NILP (Vsynchronous_sounds))
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417 {
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418 wait_for_sounds ();
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419 }
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420 #endif
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421
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422 #ifdef ROBUST_PLAY
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423 signal (SIGPIPE, old_sigpipe);
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424 #endif
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425
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426 return 1;
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427 }
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428
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429 int
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430 play_sound_data (unsigned char *data,
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431 int length,
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432 int volume)
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433 {
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434 Sound s;
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435 int offset;
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436 SIGTYPE (*old_sigpipe) ();
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437
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438 #if !defined (XTEVENTS)
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439 AuEvent ev;
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440 #endif
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441
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442 #ifdef ROBUST_PLAY
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443 old_sigpipe = signal (SIGPIPE, sigpipe_handle);
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444 if (setjmp (AuXtErrorJump) !=0)
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445 {
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446 signal (SIGPIPE, old_sigpipe);
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447 return 0;
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448 }
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449 #endif
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450
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451
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263
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452 if (aud == NULL) {
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0
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453 if (aud_server != NULL)
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454 {
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455 char *m;
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456 /* attempt to reconect */
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457 if ((m = init_play (aud_server)) != NULL)
|
|
|
458 {
|
|
|
459 #ifdef ROBUST_PLAY
|
|
|
460 signal (SIGPIPE, old_sigpipe);
|
|
|
461 #endif
|
|
|
462 return 0;
|
|
|
463 }
|
|
|
464 }
|
|
|
465 else
|
|
|
466 {
|
|
|
467 warn ("Attempt to play with no audio init\n");
|
|
|
468 #ifdef ROBUST_PLAY
|
|
|
469 signal (SIGPIPE, old_sigpipe);
|
|
|
470 #endif
|
|
|
471 return 0;
|
|
|
472 }
|
|
263
|
473 }
|
|
0
|
474
|
|
|
475 if ((s=SoundOpenDataForReading (data, length))==NULL)
|
|
|
476 {
|
|
|
477 warn ("unknown sound type");
|
|
|
478 #ifdef ROBUST_PLAY
|
|
|
479 signal (SIGPIPE, old_sigpipe);
|
|
|
480 #endif
|
|
|
481 return 0;
|
|
|
482 }
|
|
|
483
|
|
|
484 if (SoundFileFormat (s) == SoundFileFormatSnd)
|
|
|
485 {
|
|
|
486 /* hack, hack */
|
|
|
487 offset = ((SndInfo *) (s->formatInfo))->h.dataOffset;
|
|
|
488 }
|
|
|
489 else
|
|
|
490 {
|
|
|
491 warn ("only understand snd files at the moment");
|
|
|
492 SoundCloseFile (s);
|
|
|
493 #ifdef ROBUST_PLAY
|
|
|
494 signal (SIGPIPE, old_sigpipe);
|
|
|
495 #endif
|
|
|
496 return 0;
|
|
|
497 }
|
|
|
498
|
|
|
499 #ifndef CACHE_SOUNDS
|
|
|
500 sounds_in_play++;
|
|
|
501 AuSoundPlayFromData (aud,
|
|
|
502 s,
|
|
|
503 data+offset,
|
|
|
504 AuNone,
|
|
|
505 AuFixedPointFromFraction (volume,100),
|
|
|
506 doneCB, (AuPointer) &sounds_in_play,
|
|
|
507 NULL,
|
|
|
508 NULL,
|
|
|
509 NULL,
|
|
|
510 NULL);
|
|
|
511 #else
|
|
|
512 /* Cache the sounds in buckets on the server */
|
|
|
513
|
|
|
514 {
|
|
|
515 do_caching_play (s, volume, data+offset);
|
|
|
516 }
|
|
|
517 #endif /* CACHE_SOUNDS */
|
|
|
518
|
|
|
519
|
|
|
520 #ifndef XTEVENTS
|
|
|
521 wait_for_sounds ();
|
|
|
522 #else
|
|
|
523 if (!NILP (Vsynchronous_sounds))
|
|
|
524 {
|
|
|
525 wait_for_sounds ();
|
|
|
526 }
|
|
|
527 #endif
|
|
|
528
|
|
|
529 SoundCloseFile (s);
|
|
|
530
|
|
|
531 #ifdef ROBUST_PLAY
|
|
|
532 signal (SIGPIPE, old_sigpipe);
|
|
|
533 #endif
|
|
|
534
|
|
|
535 return 1;
|
|
|
536 }
|
|
|
537
|
|
|
538 #if defined (ROBUST_PLAY)
|
|
|
539
|
|
|
540 /********************************************************************\
|
|
|
541 * *
|
|
|
542 * Code to protect the client from server shutdowns. *
|
|
|
543 * *
|
|
|
544 * This is unbelievably horrible. *
|
|
|
545 * *
|
|
|
546 \********************************************************************/
|
|
|
547
|
|
|
548 static AuBool
|
|
|
549 CatchIoErrorAndJump (AuServer *old_aud)
|
|
|
550 {
|
|
|
551 if (old_aud)
|
|
|
552 warn ("Audio Server connection broken");
|
|
|
553 else
|
|
|
554 warn ("Audio Server connection broken because of signal");
|
|
|
555
|
|
|
556 #ifdef XTEVENTS
|
|
|
557 #ifdef XTOOLKIT
|
|
|
558 {
|
|
|
559 AuXtAppRemoveAudioHandler (aud, input_id);
|
|
|
560 }
|
|
|
561 #endif
|
|
|
562
|
|
|
563 if (aud)
|
|
|
564 AuCloseServer (aud);
|
|
|
565 aud = NULL;
|
|
|
566 sounds_in_play = 0;
|
|
|
567
|
|
|
568 longjmp (AuXtErrorJump, 1);
|
|
|
569
|
|
|
570 #else /* not XTEVENTS */
|
|
|
571
|
|
|
572 if (aud)
|
|
|
573 AuCloseServer (aud);
|
|
|
574 aud = NULL;
|
|
|
575 sounds_in_play = 0;
|
|
|
576 longjmp (AuXtErrorJump, 1);
|
|
|
577
|
|
|
578 #endif /* XTEVENTS */
|
|
|
579 }
|
|
|
580
|
|
|
581 SIGTYPE
|
|
|
582 sigpipe_handle (int signo)
|
|
|
583 {
|
|
|
584 CatchIoErrorAndJump (NULL);
|
|
|
585 }
|
|
|
586
|
|
|
587 static AuBool
|
|
|
588 CatchErrorAndJump (AuServer *old_aud,
|
|
|
589 AuErrorEvent *event)
|
|
|
590 {
|
|
|
591 return CatchIoErrorAndJump (old_aud);
|
|
|
592 }
|
|
|
593
|
|
|
594 #endif /* ROBUST_PLAY */
|
|
|
595
|
|
|
596 /********************************************************************\
|
|
|
597 * *
|
|
|
598 * This code is here because the nas Sound library doesn't *
|
|
|
599 * support playing from a file buffered in memory. It's a fairly *
|
|
|
600 * direct translation of the file-based equivalent. *
|
|
|
601 * *
|
|
|
602 * Since we don't have a filename, samples with no comment field *
|
|
|
603 * are named by a section of their content. *
|
|
|
604 * *
|
|
|
605 \********************************************************************/
|
|
|
606
|
|
|
607 /* Create a name from the sound. */
|
|
|
608
|
|
|
609 static char *
|
|
|
610 NameFromData (CONST unsigned char *buf,
|
|
|
611 int len)
|
|
|
612
|
|
|
613 {
|
|
|
614 unsigned char name[9];
|
|
|
615 int i;
|
|
|
616 char *s;
|
|
|
617
|
|
|
618 buf+=len/2;
|
|
|
619 len -= len/2;
|
|
|
620
|
|
|
621 i=0;
|
|
|
622 while (i<8 && len >0)
|
|
|
623 {
|
|
|
624 while (*buf < 32 && len>0)
|
|
|
625 {
|
|
|
626 buf++;
|
|
|
627 len--;
|
|
|
628 }
|
|
|
629 name[i]= *buf;
|
|
|
630 i++;
|
|
|
631 buf++;
|
|
|
632 len--;
|
|
|
633 }
|
|
|
634
|
|
|
635 name[i]='\0';
|
|
|
636
|
|
|
637 if (i==8)
|
|
|
638 {
|
|
|
639 strcpy (s=malloc (10), name);
|
|
|
640 }
|
|
|
641 else
|
|
|
642 {
|
|
|
643 strcpy (s=malloc (15), "short sound");
|
|
|
644 }
|
|
|
645
|
|
|
646 return s;
|
|
|
647 }
|
|
|
648
|
|
|
649 /* Code to do a pseudo-open on a data buffer. Only for snd files at the
|
|
|
650 moment.
|
|
|
651 */
|
|
|
652
|
|
|
653 static SndInfo *
|
|
|
654 SndOpenDataForReading (CONST char *data,
|
|
|
655 int length)
|
|
|
656
|
|
|
657 {
|
|
|
658 SndInfo *si;
|
|
|
659 int size;
|
|
|
660
|
|
|
661 if (!(si = (SndInfo *) malloc (sizeof (SndInfo))))
|
|
|
662 return NULL;
|
|
|
663
|
|
|
664 si->comment = NULL;
|
|
|
665 si->writing = 0;
|
|
|
666
|
|
|
667 memcpy (&si->h, data, sizeof (SndHeader));
|
|
|
668
|
|
|
669 if (LITTLE_ENDIAN)
|
|
|
670 {
|
|
|
671 char n;
|
|
|
672
|
|
|
673 swapl (&si->h.magic, n);
|
|
|
674 swapl (&si->h.dataOffset, n);
|
|
|
675 swapl (&si->h.dataSize, n);
|
|
|
676 swapl (&si->h.format, n);
|
|
|
677 swapl (&si->h.sampleRate, n);
|
|
|
678 swapl (&si->h.tracks, n);
|
|
|
679 }
|
|
|
680
|
|
|
681 if (si->h.magic != SND_MAGIC_NUM)
|
|
|
682 {
|
|
|
683 free (si);
|
|
|
684 return NULL;
|
|
|
685 }
|
|
|
686
|
|
|
687 size = si->h.dataOffset - sizeof (SndHeader);
|
|
|
688
|
|
|
689 if (size)
|
|
|
690 {
|
|
|
691 if (!(si->comment = (char *) malloc (size + 1)))
|
|
|
692 {
|
|
|
693 free (si);
|
|
|
694 return NULL;
|
|
|
695 }
|
|
|
696
|
|
|
697 memcpy (si->comment, data+sizeof (SndHeader), size);
|
|
|
698
|
|
|
699 *(si->comment + size) = 0;
|
|
|
700 if (*si->comment == '\0')
|
|
|
701 si->comment =
|
|
|
702 NameFromData (data+si->h.dataOffset, length-si->h.dataOffset);
|
|
|
703 }
|
|
|
704 else
|
|
|
705 si->comment = NameFromData (data+si->h.dataOffset, length-si->h.dataOffset);
|
|
|
706
|
|
|
707 si->h.dataSize = length-si->h.dataOffset;
|
|
|
708
|
|
|
709 si->fp=NULL;
|
|
|
710
|
|
|
711 return si;
|
|
|
712 }
|
|
|
713
|
|
|
714 static Sound
|
|
|
715 SoundOpenDataForReading (unsigned char *data,
|
|
|
716 int length)
|
|
|
717
|
|
|
718 {
|
|
|
719 Sound s;
|
|
|
720
|
|
|
721 if (!(s = (Sound) malloc (sizeof (SoundRec))))
|
|
|
722 return NULL;
|
|
|
723
|
|
|
724 if ((s->formatInfo = SndOpenDataForReading (data, length))==NULL)
|
|
|
725 {
|
|
|
726 free (s);
|
|
|
727 return NULL;
|
|
|
728 }
|
|
|
729
|
|
|
730
|
|
|
731 if (!(SoundFileInfo[SoundFileFormatSnd].toSound) (s))
|
|
|
732 {
|
|
|
733 SndCloseFile (s->formatInfo);
|
|
|
734 free (s);
|
|
|
735 return NULL;
|
|
|
736 }
|
|
|
737
|
|
|
738 return s;
|
|
|
739 }
|
|
|
740
|
