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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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375
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52 * 1998-10-01 rlt Added support for WAVE files.
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0
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53 */
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54
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272
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55 #ifdef emacs
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56 #include <config.h>
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57 #include "lisp.h"
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380
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58 #include "sysdep.h"
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59 #include "syssignal.h"
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272
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60 #endif
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61
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380
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62 #include <stdlib.h>
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63 #include <stdarg.h>
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64 #include <string.h>
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65 #include <stdio.h>
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0
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66
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16
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67 #ifdef HAVE_UNISTD_H
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68 #include <unistd.h>
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0
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69 #endif
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70
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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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375
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77 #include <audio/wave.h>
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0
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78 #include <audio/fileutil.h>
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79
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80 #ifdef emacs
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81
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82 # define XTOOLKIT
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83 # define XTEVENTS
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84 # define ROBUST_PLAY
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85 # define CACHE_SOUNDS
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86
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87 /*
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88 * For old NAS libraries, force playing to be synchronous
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89 * and declare the long jump point locally.
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90 */
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91
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92 # if defined (NAS_NO_ERROR_JUMP)
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93
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94 # undef XTEVENTS
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95
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96 # include <setjmp.h>
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97 jmp_buf AuXtErrorJump;
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98 # endif
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99
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100 /* The GETTEXT is correct. --ben */
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101 # define warn(str) warn_when_safe (Qnas, Qwarning, "nas: %s ", GETTEXT (str))
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102
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103 # define play_sound_file nas_play_sound_file
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104 # define play_sound_data nas_play_sound_data
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105 # define wait_for_sounds nas_wait_for_sounds
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106 # define init_play nas_init_play
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107 # define close_down_play nas_close_down_play
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108
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109 #else /* !emacs */
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110 # define warn(str) fprintf (stderr, "%s\n", (str))
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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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398
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148 );
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149 char *
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150 init_play (
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151 #ifdef XTOOLKIT
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152 Display *display
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153 #else
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154 char *server
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155 #endif
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0
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156 )
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157 {
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158 char *err_message;
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398
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159 SIGTYPE (*old_sigpipe) (int);
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0
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160
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161 #ifdef XTOOLKIT
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162 char * server = DisplayString (display);
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163 XtAppContext app_context = XtDisplayToApplicationContext (display);
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164
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165 aud_server = display;
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166 #else
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167
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168 aud_server = server;
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169 #endif
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170
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171 #ifdef ROBUST_PLAY
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172 old_sigpipe = signal (SIGPIPE, sigpipe_handle);
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173 if (setjmp (AuXtErrorJump))
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174 {
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175 signal (SIGPIPE, old_sigpipe);
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176 #ifdef emacs
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177 start_interrupts ();
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178 #endif
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179 return "error in NAS";
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180 }
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181 #endif
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182
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183 #if defined (ROBUST_PLAY) && !defined (NAS_NO_ERROR_JUMP)
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184 AuDefaultIOErrorHandler = CatchIoErrorAndJump;
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185 AuDefaultErrorHandler = CatchErrorAndJump;
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186 #endif
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187
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188 #ifdef emacs
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189 stop_interrupts ();
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190 #endif
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191 aud = AuOpenServer (server, 0, NULL, 0, NULL, &err_message);
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192 #ifdef emacs
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193 start_interrupts ();
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194 #endif
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195 if (!aud)
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196 {
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197 #ifdef ROBUST_PLAY
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198 signal (SIGPIPE, old_sigpipe);
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199 #endif
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200 if (err_message == NULL)
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201 return "Can't connect to audio server";
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202 else
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203 return err_message;
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204 }
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205
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206 #if defined (ROBUST_PLAY)
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207 # if defined (NAS_NO_ERROR_JUMP)
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208 aud->funcs.ioerror_handler = CatchIoErrorAndJump;
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209 aud->funcs.error_handler = CatchErrorAndJump;
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210 # else /* !NAS_NO_ERROR_JUMP */
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211 AuDefaultIOErrorHandler = NULL;
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212 AuDefaultErrorHandler = NULL;
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213 # endif
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214 #endif
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215
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216 #ifdef XTEVENTS
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217 input_id = AuXtAppAddAudioHandler (app_context, aud);
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218 #endif
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219
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220 #ifdef CACHE_SOUNDS
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221 AuSetCloseDownMode (aud, AuCloseDownRetainPermanent, NULL);
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222 #endif
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223
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224 #ifdef ROBUST_PLAY
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225 signal (SIGPIPE, old_sigpipe);
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226 #endif
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227
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228 sounds_in_play = 0;
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229
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230 return NULL;
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231 }
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232
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398
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233 static void
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0
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234 close_down_play (void)
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235
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236 {
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237 AuCloseServer (aud);
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238 warn ("disconnected from audio server");
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239 }
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240
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241 /********************************************************************\
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242 * *
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243 * Callback which is run when the sound finishes playing. *
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244 * *
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245 \********************************************************************/
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246
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247 static void
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398
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248 doneCB (AuServer *auserver,
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0
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249 AuEventHandlerRec *handler,
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250 AuEvent *ev,
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251 AuPointer data)
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252 {
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253 int *in_play_p = (int *) data;
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254
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255 (*in_play_p) --;
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256 }
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257
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258 #ifdef CACHE_SOUNDS
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259
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260 /********************************************************************\
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261 * *
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262 * Play a sound by playing the relevant bucket, if any or *
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263 * downloading it if not. *
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264 * *
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265 \********************************************************************/
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266
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267 static void
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268 do_caching_play (Sound s,
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269 int volume,
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270 unsigned char *buf)
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271
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272 {
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273 AuBucketAttributes *list, b;
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274 AuBucketID id;
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275 int n;
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276
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277 AuSetString (AuBucketDescription (&b),
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278 AuStringLatin1, strlen (SoundComment (s)), SoundComment (s));
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279
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280 list = AuListBuckets (aud, AuCompCommonDescriptionMask, &b, &n, NULL);
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281
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282 if (list == NULL)
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283 {
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398
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284 AuPointer my_buf;
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0
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285
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286 if (buf==NULL)
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287 {
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398
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288 if ((my_buf= (AuPointer) malloc (SoundNumBytes (s)))==NULL)
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0
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289 {
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290 return;
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291 }
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292
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398
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293 if (SoundReadFile ((char *) my_buf, SoundNumBytes (s), s) != SoundNumBytes (s))
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0
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294 {
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295 free (my_buf);
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296 return;
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297 }
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298 }
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299 else
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398
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300 my_buf = (AuPointer) buf;
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0
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301
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302 id = AuSoundCreateBucketFromData (aud,
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303 s,
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304 my_buf,
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305 AuAccessAllMasks,
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306 NULL,
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307 NULL);
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308 if (buf == NULL)
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309 free (my_buf);
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310 }
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311 else /* found cached sound */
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312 {
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313 id = AuBucketIdentifier (list);
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314 AuFreeBucketAttributes (aud, n, list);
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315 }
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316
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317 sounds_in_play++;
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318
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319 AuSoundPlayFromBucket (aud,
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320 id,
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321 AuNone,
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322 AuFixedPointFromFraction (volume, 100),
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323 doneCB, (AuPointer) &sounds_in_play,
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324 1,
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325 NULL, NULL,
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326 NULL, NULL);
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327
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328 }
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329 #endif /* CACHE_SOUNDS */
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330
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331
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398
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332 void wait_for_sounds (void);
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0
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333 void
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334 wait_for_sounds (void)
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335
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336 {
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337 AuEvent ev;
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338
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339 while (sounds_in_play>0)
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340 {
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341 AuNextEvent (aud, AuTrue, &ev);
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342 AuDispatchEvent (aud, &ev);
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343 }
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344 }
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345
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398
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346 int play_sound_file (char *sound_file, int volume);
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0
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347 int
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348 play_sound_file (char *sound_file,
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349 int volume)
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350 {
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398
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351 SIGTYPE (*old_sigpipe) (int);
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0
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352
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353 #ifdef ROBUST_PLAY
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354 old_sigpipe=signal (SIGPIPE, sigpipe_handle);
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355 if (setjmp (AuXtErrorJump))
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356 {
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357 signal (SIGPIPE, old_sigpipe);
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358 return 0;
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359 }
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360 #endif
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361
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263
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362 if (aud==NULL) {
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0
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363 if (aud_server != NULL)
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364 {
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365 char *m;
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366 /* attempt to reconect */
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367 if ((m=init_play (aud_server))!= NULL)
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368 {
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369
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370 #ifdef ROBUST_PLAY
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371 signal (SIGPIPE, old_sigpipe);
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372 #endif
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373 return 0;
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374 }
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375 }
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376 else
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377 {
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378 warn ("Attempt to play with no audio init\n");
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379 #ifdef ROBUST_PLAY
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380 signal (SIGPIPE, old_sigpipe);
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381 #endif
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382 return 0;
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383 }
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263
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384 }
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0
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385
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386 #ifndef CACHE_SOUNDS
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387 sounds_in_play++;
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388 AuSoundPlayFromFile (aud,
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389 sound_file,
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390 AuNone,
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391 AuFixedPointFromFraction (volume,100),
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392 doneCB, (AuPointer) &sounds_in_play,
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393 NULL,
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394 NULL,
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395 NULL,
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396 NULL);
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397 #else
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398 /* Cache the sounds in buckets on the server */
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399
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400 {
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401 Sound s;
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402
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403 if ((s = SoundOpenFileForReading (sound_file))==NULL)
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404 {
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405 #ifdef ROBUST_PLAY
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406 signal (SIGPIPE, old_sigpipe);
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407 #endif
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408 return 0;
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409 }
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410
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411 if (SoundComment (s) == NULL || SoundComment (s)[0] == '\0')
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412 {
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413 SoundComment (s) = FileCommentFromFilename (sound_file);
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414 }
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415
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416 do_caching_play (s, volume, NULL);
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417
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418 SoundCloseFile (s);
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419
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420 }
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421 #endif /* CACHE_SOUNDS */
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422
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423 #ifndef XTEVENTS
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424 wait_for_sounds ();
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425 #else
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426 if (!NILP (Vsynchronous_sounds))
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427 {
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428 wait_for_sounds ();
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429 }
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430 #endif
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431
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432 #ifdef ROBUST_PLAY
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433 signal (SIGPIPE, old_sigpipe);
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434 #endif
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435
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436 return 1;
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437 }
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438
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398
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439 int play_sound_data (unsigned char *data, int length, int volume);
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0
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440 int
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441 play_sound_data (unsigned char *data,
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442 int length,
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443 int volume)
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444 {
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445 Sound s;
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446 int offset;
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398
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447 SIGTYPE (*old_sigpipe) (int);
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0
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448
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449 #if !defined (XTEVENTS)
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|
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450 AuEvent ev;
|
|
|
451 #endif
|
|
|
452
|
|
|
453 #ifdef ROBUST_PLAY
|
|
|
454 old_sigpipe = signal (SIGPIPE, sigpipe_handle);
|
|
|
455 if (setjmp (AuXtErrorJump) !=0)
|
|
|
456 {
|
|
|
457 signal (SIGPIPE, old_sigpipe);
|
|
|
458 return 0;
|
|
|
459 }
|
|
|
460 #endif
|
|
|
461
|
|
|
462
|
|
263
|
463 if (aud == NULL) {
|
|
0
|
464 if (aud_server != NULL)
|
|
|
465 {
|
|
|
466 char *m;
|
|
|
467 /* attempt to reconect */
|
|
|
468 if ((m = init_play (aud_server)) != NULL)
|
|
|
469 {
|
|
|
470 #ifdef ROBUST_PLAY
|
|
|
471 signal (SIGPIPE, old_sigpipe);
|
|
|
472 #endif
|
|
|
473 return 0;
|
|
|
474 }
|
|
|
475 }
|
|
|
476 else
|
|
|
477 {
|
|
|
478 warn ("Attempt to play with no audio init\n");
|
|
|
479 #ifdef ROBUST_PLAY
|
|
|
480 signal (SIGPIPE, old_sigpipe);
|
|
|
481 #endif
|
|
|
482 return 0;
|
|
|
483 }
|
|
263
|
484 }
|
|
0
|
485
|
|
|
486 if ((s=SoundOpenDataForReading (data, length))==NULL)
|
|
|
487 {
|
|
|
488 warn ("unknown sound type");
|
|
|
489 #ifdef ROBUST_PLAY
|
|
|
490 signal (SIGPIPE, old_sigpipe);
|
|
|
491 #endif
|
|
|
492 return 0;
|
|
|
493 }
|
|
|
494
|
|
|
495 if (SoundFileFormat (s) == SoundFileFormatSnd)
|
|
|
496 {
|
|
|
497 /* hack, hack */
|
|
|
498 offset = ((SndInfo *) (s->formatInfo))->h.dataOffset;
|
|
|
499 }
|
|
375
|
500 else if (SoundFileFormat (s) == SoundFileFormatWave)
|
|
|
501 {
|
|
|
502 offset = ((WaveInfo *) (s->formatInfo))->dataOffset;
|
|
|
503 }
|
|
0
|
504 else
|
|
|
505 {
|
|
375
|
506 warn ("only understand snd and wave files at the moment");
|
|
0
|
507 SoundCloseFile (s);
|
|
|
508 #ifdef ROBUST_PLAY
|
|
|
509 signal (SIGPIPE, old_sigpipe);
|
|
|
510 #endif
|
|
|
511 return 0;
|
|
|
512 }
|
|
|
513
|
|
|
514 #ifndef CACHE_SOUNDS
|
|
|
515 sounds_in_play++;
|
|
|
516 AuSoundPlayFromData (aud,
|
|
|
517 s,
|
|
|
518 data+offset,
|
|
|
519 AuNone,
|
|
|
520 AuFixedPointFromFraction (volume,100),
|
|
|
521 doneCB, (AuPointer) &sounds_in_play,
|
|
|
522 NULL,
|
|
|
523 NULL,
|
|
|
524 NULL,
|
|
|
525 NULL);
|
|
|
526 #else
|
|
|
527 /* Cache the sounds in buckets on the server */
|
|
|
528
|
|
|
529 {
|
|
|
530 do_caching_play (s, volume, data+offset);
|
|
|
531 }
|
|
|
532 #endif /* CACHE_SOUNDS */
|
|
|
533
|
|
|
534
|
|
|
535 #ifndef XTEVENTS
|
|
|
536 wait_for_sounds ();
|
|
|
537 #else
|
|
|
538 if (!NILP (Vsynchronous_sounds))
|
|
|
539 {
|
|
|
540 wait_for_sounds ();
|
|
|
541 }
|
|
|
542 #endif
|
|
|
543
|
|
|
544 SoundCloseFile (s);
|
|
|
545
|
|
|
546 #ifdef ROBUST_PLAY
|
|
|
547 signal (SIGPIPE, old_sigpipe);
|
|
|
548 #endif
|
|
|
549
|
|
|
550 return 1;
|
|
|
551 }
|
|
|
552
|
|
|
553 #if defined (ROBUST_PLAY)
|
|
|
554
|
|
|
555 /********************************************************************\
|
|
|
556 * *
|
|
|
557 * Code to protect the client from server shutdowns. *
|
|
|
558 * *
|
|
|
559 * This is unbelievably horrible. *
|
|
|
560 * *
|
|
|
561 \********************************************************************/
|
|
|
562
|
|
|
563 static AuBool
|
|
|
564 CatchIoErrorAndJump (AuServer *old_aud)
|
|
|
565 {
|
|
|
566 if (old_aud)
|
|
|
567 warn ("Audio Server connection broken");
|
|
|
568 else
|
|
|
569 warn ("Audio Server connection broken because of signal");
|
|
|
570
|
|
|
571 #ifdef XTEVENTS
|
|
|
572 #ifdef XTOOLKIT
|
|
|
573 {
|
|
|
574 AuXtAppRemoveAudioHandler (aud, input_id);
|
|
|
575 }
|
|
|
576 #endif
|
|
|
577
|
|
|
578 if (aud)
|
|
|
579 AuCloseServer (aud);
|
|
|
580 aud = NULL;
|
|
|
581 sounds_in_play = 0;
|
|
|
582
|
|
|
583 longjmp (AuXtErrorJump, 1);
|
|
|
584
|
|
|
585 #else /* not XTEVENTS */
|
|
|
586
|
|
|
587 if (aud)
|
|
|
588 AuCloseServer (aud);
|
|
|
589 aud = NULL;
|
|
|
590 sounds_in_play = 0;
|
|
|
591 longjmp (AuXtErrorJump, 1);
|
|
|
592
|
|
|
593 #endif /* XTEVENTS */
|
|
375
|
594 return 0;
|
|
0
|
595 }
|
|
|
596
|
|
|
597 SIGTYPE
|
|
|
598 sigpipe_handle (int signo)
|
|
|
599 {
|
|
|
600 CatchIoErrorAndJump (NULL);
|
|
|
601 }
|
|
|
602
|
|
|
603 static AuBool
|
|
|
604 CatchErrorAndJump (AuServer *old_aud,
|
|
|
605 AuErrorEvent *event)
|
|
|
606 {
|
|
|
607 return CatchIoErrorAndJump (old_aud);
|
|
|
608 }
|
|
|
609
|
|
|
610 #endif /* ROBUST_PLAY */
|
|
|
611
|
|
|
612 /********************************************************************\
|
|
|
613 * *
|
|
|
614 * This code is here because the nas Sound library doesn't *
|
|
|
615 * support playing from a file buffered in memory. It's a fairly *
|
|
|
616 * direct translation of the file-based equivalent. *
|
|
|
617 * *
|
|
|
618 * Since we don't have a filename, samples with no comment field *
|
|
|
619 * are named by a section of their content. *
|
|
|
620 * *
|
|
|
621 \********************************************************************/
|
|
|
622
|
|
|
623 /* Create a name from the sound. */
|
|
|
624
|
|
|
625 static char *
|
|
398
|
626 NameFromData (const char *buf,
|
|
0
|
627 int len)
|
|
|
628
|
|
|
629 {
|
|
398
|
630 char name[9];
|
|
0
|
631 int i;
|
|
|
632 char *s;
|
|
|
633
|
|
|
634 buf+=len/2;
|
|
|
635 len -= len/2;
|
|
|
636
|
|
|
637 i=0;
|
|
|
638 while (i<8 && len >0)
|
|
|
639 {
|
|
|
640 while (*buf < 32 && len>0)
|
|
|
641 {
|
|
|
642 buf++;
|
|
|
643 len--;
|
|
|
644 }
|
|
|
645 name[i]= *buf;
|
|
|
646 i++;
|
|
|
647 buf++;
|
|
|
648 len--;
|
|
|
649 }
|
|
|
650
|
|
|
651 name[i]='\0';
|
|
|
652
|
|
|
653 if (i==8)
|
|
|
654 {
|
|
398
|
655 strcpy (s = (char *) malloc (10), name);
|
|
0
|
656 }
|
|
|
657 else
|
|
|
658 {
|
|
398
|
659 strcpy (s = (char *) malloc (15), "short sound");
|
|
0
|
660 }
|
|
|
661
|
|
|
662 return s;
|
|
|
663 }
|
|
|
664
|
|
|
665 /* Code to do a pseudo-open on a data buffer. Only for snd files at the
|
|
|
666 moment.
|
|
|
667 */
|
|
|
668
|
|
|
669 static SndInfo *
|
|
398
|
670 SndOpenDataForReading (const char *data,
|
|
0
|
671 int length)
|
|
|
672
|
|
|
673 {
|
|
|
674 SndInfo *si;
|
|
|
675 int size;
|
|
|
676
|
|
|
677 if (!(si = (SndInfo *) malloc (sizeof (SndInfo))))
|
|
|
678 return NULL;
|
|
|
679
|
|
|
680 si->comment = NULL;
|
|
|
681 si->writing = 0;
|
|
|
682
|
|
|
683 memcpy (&si->h, data, sizeof (SndHeader));
|
|
|
684
|
|
371
|
685 if (LITTLE_ENDIAN)
|
|
0
|
686 {
|
|
|
687 char n;
|
|
|
688
|
|
|
689 swapl (&si->h.magic, n);
|
|
|
690 swapl (&si->h.dataOffset, n);
|
|
|
691 swapl (&si->h.dataSize, n);
|
|
|
692 swapl (&si->h.format, n);
|
|
|
693 swapl (&si->h.sampleRate, n);
|
|
|
694 swapl (&si->h.tracks, n);
|
|
|
695 }
|
|
|
696
|
|
|
697 if (si->h.magic != SND_MAGIC_NUM)
|
|
|
698 {
|
|
|
699 free (si);
|
|
|
700 return NULL;
|
|
|
701 }
|
|
|
702
|
|
|
703 size = si->h.dataOffset - sizeof (SndHeader);
|
|
|
704
|
|
|
705 if (size)
|
|
|
706 {
|
|
|
707 if (!(si->comment = (char *) malloc (size + 1)))
|
|
|
708 {
|
|
|
709 free (si);
|
|
|
710 return NULL;
|
|
|
711 }
|
|
|
712
|
|
|
713 memcpy (si->comment, data+sizeof (SndHeader), size);
|
|
|
714
|
|
|
715 *(si->comment + size) = 0;
|
|
|
716 if (*si->comment == '\0')
|
|
|
717 si->comment =
|
|
|
718 NameFromData (data+si->h.dataOffset, length-si->h.dataOffset);
|
|
|
719 }
|
|
|
720 else
|
|
|
721 si->comment = NameFromData (data+si->h.dataOffset, length-si->h.dataOffset);
|
|
|
722
|
|
|
723 si->h.dataSize = length-si->h.dataOffset;
|
|
|
724
|
|
|
725 si->fp=NULL;
|
|
|
726
|
|
|
727 return si;
|
|
|
728 }
|
|
|
729
|
|
375
|
730 /* Stuff taken from wave.c from NAS. Just like snd files, NAS can't
|
|
|
731 read wave data from memory, so these functions do that for us. */
|
|
|
732
|
|
|
733 #define Err() { return NULL; }
|
|
|
734 #define readFourcc(_f) dread(_f, sizeof(RIFF_FOURCC), 1)
|
|
|
735 #define cmpID(_x, _y) \
|
|
|
736 strncmp((char *) (_x), (char *) (_y), sizeof(RIFF_FOURCC))
|
|
|
737 #define PAD2(_x) (((_x) + 1) & ~1)
|
|
|
738
|
|
|
739 /* These functions here are for faking file I/O from buffer. */
|
|
|
740
|
|
|
741 /* The "file" position */
|
|
398
|
742 static size_t file_posn;
|
|
375
|
743 /* The length of the "file" */
|
|
398
|
744 static size_t file_len;
|
|
375
|
745 /* The actual "file" data. */
|
|
398
|
746 static const void* file_data;
|
|
375
|
747
|
|
|
748 /* Like fopen, but for a buffer in memory */
|
|
|
749 static void
|
|
398
|
750 dopen (const void* data, size_t length)
|
|
375
|
751 {
|
|
|
752 file_data = data;
|
|
|
753 file_len = length;
|
|
|
754 file_posn = 0;
|
|
|
755 }
|
|
|
756
|
|
|
757 /* Like fread, but for a buffer in memory */
|
|
|
758 static int
|
|
398
|
759 dread (void* buf, size_t size, size_t nitems)
|
|
375
|
760 {
|
|
398
|
761 size_t nread = size * nitems;
|
|
375
|
762
|
|
|
763 if (file_posn + nread <= file_len)
|
|
|
764 {
|
|
398
|
765 memcpy(buf, (char *) file_data + file_posn, size * nitems);
|
|
375
|
766 file_posn += nread;
|
|
|
767 return nitems;
|
|
|
768 }
|
|
|
769 else
|
|
|
770 {
|
|
|
771 return EOF;
|
|
|
772 }
|
|
|
773 }
|
|
|
774
|
|
|
775 /* Like fgetc, but for a buffer in memory */
|
|
|
776 static int
|
|
398
|
777 dgetc (void)
|
|
375
|
778 {
|
|
|
779 if (file_posn < file_len)
|
|
398
|
780 return ((char *)file_data)[file_posn++];
|
|
375
|
781 else
|
|
|
782 return -1;
|
|
|
783 }
|
|
|
784
|
|
|
785 /* Like fseek, but for a buffer in memory */
|
|
|
786 static int
|
|
398
|
787 dseek (long offset, int from)
|
|
375
|
788 {
|
|
|
789 if (from == 0)
|
|
|
790 file_posn = offset;
|
|
|
791 else if (from == 1)
|
|
|
792 file_posn += offset;
|
|
|
793 else if (from == 2)
|
|
|
794 file_posn = file_len + offset;
|
|
|
795
|
|
|
796 return 0;
|
|
|
797 }
|
|
|
798
|
|
|
799 /* Like ftell, but for a buffer in memory */
|
|
398
|
800 static long
|
|
|
801 dtell (void)
|
|
375
|
802 {
|
|
|
803 return file_posn;
|
|
|
804 }
|
|
|
805
|
|
|
806 /* Data buffer analogs for FileReadS and FileReadL in NAS. */
|
|
|
807
|
|
|
808 static unsigned short
|
|
398
|
809 DataReadS (int swapit)
|
|
375
|
810 {
|
|
|
811 unsigned short us;
|
|
|
812
|
|
|
813 dread(&us, 2, 1);
|
|
|
814 if (swapit)
|
|
|
815 us = FileSwapS(us);
|
|
|
816 return us;
|
|
|
817 }
|
|
|
818
|
|
|
819 static AuUint32
|
|
398
|
820 DataReadL (int swapit)
|
|
375
|
821 {
|
|
|
822 AuUint32 ul;
|
|
|
823
|
|
|
824 dread(&ul, 4, 1);
|
|
|
825 if (swapit)
|
|
|
826 ul = FileSwapL(ul);
|
|
|
827 return ul;
|
|
|
828 }
|
|
|
829
|
|
|
830 static int
|
|
398
|
831 readChunk (RiffChunk *c)
|
|
375
|
832 {
|
|
|
833 int status;
|
|
|
834 char n;
|
|
|
835
|
|
|
836 if ((status = dread(c, sizeof(RiffChunk), 1)))
|
|
|
837 if (BIG_ENDIAN)
|
|
|
838 swapl(&c->ckSize, n);
|
|
|
839
|
|
|
840 return status;
|
|
|
841 }
|
|
|
842
|
|
|
843 /* A very straight-forward translation of WaveOpenFileForReading to
|
|
|
844 read the wave data from a buffer in memory. */
|
|
|
845
|
|
|
846 static WaveInfo *
|
|
398
|
847 WaveOpenDataForReading (const char *data,
|
|
|
848 int length)
|
|
375
|
849 {
|
|
|
850 RiffChunk ck;
|
|
|
851 RIFF_FOURCC fourcc;
|
|
|
852 AuInt32 fileSize;
|
|
|
853 WaveInfo *wi;
|
|
|
854
|
|
|
855
|
|
|
856 if (!(wi = (WaveInfo *) malloc(sizeof(WaveInfo))))
|
|
|
857 return NULL;
|
|
|
858
|
|
|
859 wi->comment = NULL;
|
|
|
860 wi->dataOffset = wi->format = wi->writing = 0;
|
|
|
861
|
|
|
862 dopen(data, length);
|
|
|
863
|
|
|
864 if (!readChunk(&ck) ||
|
|
|
865 cmpID(&ck.ckID, RIFF_RiffID) ||
|
|
|
866 !readFourcc(&fourcc) ||
|
|
|
867 cmpID(&fourcc, RIFF_WaveID))
|
|
|
868 Err();
|
|
|
869
|
|
|
870 fileSize = PAD2(ck.ckSize) - sizeof(RIFF_FOURCC);
|
|
|
871
|
|
|
872 while (fileSize >= sizeof(RiffChunk))
|
|
|
873 {
|
|
|
874 if (!readChunk(&ck))
|
|
|
875 Err();
|
|
|
876
|
|
|
877 fileSize -= sizeof(RiffChunk) + PAD2(ck.ckSize);
|
|
|
878
|
|
|
879 /* LIST chunk */
|
|
|
880 if (!cmpID(&ck.ckID, RIFF_ListID))
|
|
|
881 {
|
|
|
882 if (!readFourcc(&fourcc))
|
|
|
883 Err();
|
|
|
884
|
|
|
885 /* INFO chunk */
|
|
|
886 if (!cmpID(&fourcc, RIFF_ListInfoID))
|
|
|
887 {
|
|
|
888 ck.ckSize -= sizeof(RIFF_FOURCC);
|
|
|
889
|
|
|
890 while (ck.ckSize)
|
|
|
891 {
|
|
|
892 RiffChunk c;
|
|
|
893
|
|
|
894 if (!readChunk(&c))
|
|
|
895 Err();
|
|
|
896
|
|
|
897 /* ICMT chunk */
|
|
|
898 if (!cmpID(&c.ckID, RIFF_InfoIcmtID))
|
|
|
899 {
|
|
|
900 if (!(wi->comment = (char *) malloc(c.ckSize)) ||
|
|
|
901 !dread(wi->comment, c.ckSize, 1))
|
|
|
902 Err();
|
|
|
903
|
|
|
904 if (c.ckSize & 1)
|
|
|
905 dgetc(); /* eat the pad byte */
|
|
|
906 }
|
|
|
907 else
|
|
|
908 /* skip unknown chunk */
|
|
|
909 dseek(PAD2(c.ckSize), 1);
|
|
|
910
|
|
|
911 ck.ckSize -= sizeof(RiffChunk) + PAD2(c.ckSize);
|
|
|
912 }
|
|
|
913 }
|
|
|
914 else
|
|
|
915 /* skip unknown chunk */
|
|
|
916 dseek(PAD2(ck.ckSize) - sizeof(RIFF_FOURCC), 1);
|
|
|
917 }
|
|
|
918 /* wave format chunk */
|
|
|
919 else if (!cmpID(&ck.ckID, RIFF_WaveFmtID) && !wi->format)
|
|
|
920 {
|
|
|
921 AuInt32 dummy;
|
|
|
922
|
|
|
923 wi->format = DataReadS(BIG_ENDIAN);
|
|
|
924 wi->channels = DataReadS(BIG_ENDIAN);
|
|
|
925 wi->sampleRate = DataReadL(BIG_ENDIAN);
|
|
|
926
|
|
|
927 /* we don't care about the next two fields */
|
|
|
928 dummy = DataReadL(BIG_ENDIAN);
|
|
|
929 dummy = DataReadS(BIG_ENDIAN);
|
|
|
930
|
|
|
931 if (wi->format != RIFF_WAVE_FORMAT_PCM)
|
|
|
932 Err();
|
|
|
933
|
|
|
934 wi->bitsPerSample = DataReadS(BIG_ENDIAN);
|
|
|
935
|
|
|
936 /* skip any other format specific fields */
|
|
|
937 dseek(PAD2(ck.ckSize - 16), 1);
|
|
|
938 }
|
|
|
939 /* wave data chunk */
|
|
|
940 else if (!cmpID(&ck.ckID, RIFF_WaveDataID) && !wi->dataOffset)
|
|
|
941 {
|
|
|
942 long endOfFile;
|
|
|
943
|
|
|
944 wi->dataOffset = dtell();
|
|
|
945 wi->dataSize = ck.ckSize;
|
|
|
946 dseek(0, 2);
|
|
|
947 endOfFile = dtell();
|
|
|
948
|
|
|
949 /* seek past the data */
|
|
|
950 if (dseek(wi->dataOffset + PAD2(ck.ckSize), 0) ||
|
|
|
951 dtell() > endOfFile)
|
|
|
952 {
|
|
|
953 /* the seek failed, assume the size is bogus */
|
|
|
954 dseek(0, 2);
|
|
|
955 wi->dataSize = dtell() - wi->dataOffset;
|
|
|
956 }
|
|
|
957
|
|
|
958 wi->dataOffset -= sizeof(long);
|
|
|
959 }
|
|
|
960 else
|
|
|
961 /* skip unknown chunk */
|
|
|
962 dseek(PAD2(ck.ckSize), 1);
|
|
|
963 }
|
|
|
964
|
|
|
965 if (!wi->dataOffset)
|
|
|
966 Err();
|
|
|
967
|
|
|
968 wi->numSamples = wi->dataSize / wi->channels / (wi->bitsPerSample >> 3);
|
|
|
969
|
|
|
970 if (!wi->comment)
|
|
|
971 wi->comment = NameFromData (data + wi->dataOffset,
|
|
|
972 length - wi->dataOffset);
|
|
|
973
|
|
|
974 wi->fp = NULL;
|
|
|
975
|
|
|
976 return wi;
|
|
|
977 }
|
|
|
978
|
|
|
979
|
|
0
|
980 static Sound
|
|
|
981 SoundOpenDataForReading (unsigned char *data,
|
|
|
982 int length)
|
|
|
983
|
|
|
984 {
|
|
|
985 Sound s;
|
|
|
986
|
|
|
987 if (!(s = (Sound) malloc (sizeof (SoundRec))))
|
|
|
988 return NULL;
|
|
|
989
|
|
398
|
990 if ((s->formatInfo = SndOpenDataForReading ((char *) data, length)) != NULL)
|
|
0
|
991 {
|
|
398
|
992 if (!((int(*)(Sound))(SoundFileInfo[SoundFileFormatSnd].toSound)) (s))
|
|
375
|
993 {
|
|
398
|
994 SndCloseFile ((SndInfo *) (s->formatInfo));
|
|
375
|
995 free (s);
|
|
|
996 return NULL;
|
|
|
997 }
|
|
0
|
998 }
|
|
398
|
999 else if ((s->formatInfo = WaveOpenDataForReading ((char *) data, length)) != NULL)
|
|
0
|
1000 {
|
|
398
|
1001 if (!((int(*)(Sound))(SoundFileInfo[SoundFileFormatWave].toSound)) (s))
|
|
375
|
1002 {
|
|
398
|
1003 WaveCloseFile ((WaveInfo *) (s->formatInfo));
|
|
375
|
1004 free (s);
|
|
|
1005 return NULL;
|
|
|
1006 }
|
|
0
|
1007 }
|
|
|
1008
|
|
|
1009 return s;
|
|
|
1010 }
|
