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428
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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 * 1998-10-01 rlt Added support for WAVE files.
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53 */
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54
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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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58 #include "sysdep.h"
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59 #include "syssignal.h"
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60 #endif
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61
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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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66
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67 #ifdef HAVE_UNISTD_H
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68 #include <unistd.h>
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69 #endif
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70
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442
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71 /* NAS <= 1.2p5 defines {BIG,LITTLE}_ENDIAN in <audio/fileutil.h>,
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72 conflicting with GNU libc (at least); newer versions avoid this
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73 name space pollution.
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428
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74
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442
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75 DO NOT USE THOSE MACROS in this file. Use NAS_{BIG,LITTLE}_ENDIAN.
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76
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77 It would be slightly more reliable to do this via configure, but that
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78 seems unnecessarily complex.
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79 */
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428
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80 #undef LITTLE_ENDIAN
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81 #undef BIG_ENDIAN
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442
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82
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428
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83 #include <audio/audiolib.h>
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84 #include <audio/soundlib.h>
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85 #include <audio/snd.h>
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86 #include <audio/wave.h>
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87 #include <audio/fileutil.h>
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88
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442
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89 /* NAS <= 1.2p5 <audio/fileutil.h> doesn't define the NAS_ versions */
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90 #ifndef NAS_LITTLE_ENDIAN
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91 #define NAS_LITTLE_ENDIAN LITTLE_ENDIAN
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92 #define NAS_BIG_ENDIAN BIG_ENDIAN
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93 #endif
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94
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428
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95 #ifdef emacs
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96
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97 # define XTOOLKIT
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98 # define XTEVENTS
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99 # define ROBUST_PLAY
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100 # define CACHE_SOUNDS
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101
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102 /*
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103 * For old NAS libraries, force playing to be synchronous
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104 * and declare the long jump point locally.
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105 */
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106
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107 # if defined (NAS_NO_ERROR_JUMP)
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108
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109 # undef XTEVENTS
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110
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111 # include <setjmp.h>
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112 jmp_buf AuXtErrorJump;
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113 # endif
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114
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115 /* The GETTEXT is correct. --ben */
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116 # define warn(str) warn_when_safe (Qnas, Qwarning, "nas: %s ", GETTEXT (str))
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117
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118 # define play_sound_file nas_play_sound_file
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119 # define play_sound_data nas_play_sound_data
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120 # define wait_for_sounds nas_wait_for_sounds
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121 # define init_play nas_init_play
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122 # define close_down_play nas_close_down_play
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123
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124 #else /* !emacs */
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125 # define warn(str) fprintf (stderr, "%s\n", (str))
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126 #endif /* emacs */
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127
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128 #ifdef XTOOLKIT
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129 # include <X11/Intrinsic.h>
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130 # include <audio/Xtutil.h>
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131 #endif
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132
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133 #if defined (ROBUST_PLAY)
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134 static AuBool CatchIoErrorAndJump (AuServer *aud);
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135 static AuBool CatchErrorAndJump (AuServer *aud, AuErrorEvent *event);
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136 SIGTYPE sigpipe_handle (int signo);
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137 #endif
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138
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139 extern Lisp_Object Vsynchronous_sounds;
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140
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141 static Sound SoundOpenDataForReading (unsigned char *data, int length);
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142
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143 static AuServer *aud;
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144
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145 /* count of sounds currently being played. */
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146 static int sounds_in_play;
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147
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148
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149 #ifdef XTOOLKIT
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150 static Display *aud_server;
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151 static XtInputId input_id;
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152 #else
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153 static char *aud_server;
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154 #endif /* XTOOLKIT */
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155
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156 char *
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157 init_play (
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158 #ifdef XTOOLKIT
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159 Display *display
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160 #else
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161 char *server
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162 #endif
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432
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163 );
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164 char *
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165 init_play (
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166 #ifdef XTOOLKIT
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167 Display *display
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168 #else
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169 char *server
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170 #endif
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428
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171 )
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172 {
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173 char *err_message;
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432
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174 SIGTYPE (*old_sigpipe) (int);
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428
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175
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176 #ifdef XTOOLKIT
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177 char * server = DisplayString (display);
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178 XtAppContext app_context = XtDisplayToApplicationContext (display);
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179
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180 aud_server = display;
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181 #else
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182
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183 aud_server = server;
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184 #endif
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185
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186 #ifdef ROBUST_PLAY
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187 old_sigpipe = signal (SIGPIPE, sigpipe_handle);
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188 if (setjmp (AuXtErrorJump))
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189 {
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190 signal (SIGPIPE, old_sigpipe);
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191 #ifdef emacs
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192 start_interrupts ();
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193 #endif
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194 return "error in NAS";
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195 }
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196 #endif
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197
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198 #if defined (ROBUST_PLAY) && !defined (NAS_NO_ERROR_JUMP)
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199 AuDefaultIOErrorHandler = CatchIoErrorAndJump;
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200 AuDefaultErrorHandler = CatchErrorAndJump;
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201 #endif
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202
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203 #ifdef emacs
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204 stop_interrupts ();
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205 #endif
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206 aud = AuOpenServer (server, 0, NULL, 0, NULL, &err_message);
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207 #ifdef emacs
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208 start_interrupts ();
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209 #endif
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210 if (!aud)
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211 {
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212 #ifdef ROBUST_PLAY
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213 signal (SIGPIPE, old_sigpipe);
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214 #endif
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215 if (err_message == NULL)
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216 return "Can't connect to audio server";
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217 else
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218 return err_message;
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219 }
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220
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221 #if defined (ROBUST_PLAY)
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222 # if defined (NAS_NO_ERROR_JUMP)
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223 aud->funcs.ioerror_handler = CatchIoErrorAndJump;
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224 aud->funcs.error_handler = CatchErrorAndJump;
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225 # else /* !NAS_NO_ERROR_JUMP */
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226 AuDefaultIOErrorHandler = NULL;
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227 AuDefaultErrorHandler = NULL;
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228 # endif
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229 #endif
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230
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231 #ifdef XTEVENTS
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232 input_id = AuXtAppAddAudioHandler (app_context, aud);
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233 #endif
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234
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235 #ifdef CACHE_SOUNDS
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236 AuSetCloseDownMode (aud, AuCloseDownRetainPermanent, NULL);
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237 #endif
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238
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239 #ifdef ROBUST_PLAY
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240 signal (SIGPIPE, old_sigpipe);
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241 #endif
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242
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243 sounds_in_play = 0;
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244
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245 return NULL;
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246 }
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247
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432
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248 static void
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428
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249 close_down_play (void)
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250
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251 {
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252 AuCloseServer (aud);
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253 warn ("disconnected from audio server");
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254 }
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255
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256 /********************************************************************\
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257 * *
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258 * Callback which is run when the sound finishes playing. *
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259 * *
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260 \********************************************************************/
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261
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262 static void
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432
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263 doneCB (AuServer *auserver,
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428
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264 AuEventHandlerRec *handler,
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265 AuEvent *ev,
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266 AuPointer data)
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267 {
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268 int *in_play_p = (int *) data;
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269
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270 (*in_play_p) --;
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271 }
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272
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273 #ifdef CACHE_SOUNDS
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274
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275 /********************************************************************\
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276 * *
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277 * Play a sound by playing the relevant bucket, if any or *
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278 * downloading it if not. *
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279 * *
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280 \********************************************************************/
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281
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282 static void
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283 do_caching_play (Sound s,
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284 int volume,
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285 unsigned char *buf)
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286
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287 {
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288 AuBucketAttributes *list, b;
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289 AuBucketID id;
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290 int n;
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291
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292 AuSetString (AuBucketDescription (&b),
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293 AuStringLatin1, strlen (SoundComment (s)), SoundComment (s));
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294
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295 list = AuListBuckets (aud, AuCompCommonDescriptionMask, &b, &n, NULL);
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296
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297 if (list == NULL)
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298 {
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432
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299 AuPointer my_buf;
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428
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300
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301 if (buf==NULL)
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302 {
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432
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303 if ((my_buf= (AuPointer) malloc (SoundNumBytes (s)))==NULL)
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428
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304 {
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305 return;
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306 }
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307
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432
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308 if (SoundReadFile ((char *) my_buf, SoundNumBytes (s), s) != SoundNumBytes (s))
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428
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309 {
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310 free (my_buf);
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311 return;
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312 }
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313 }
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314 else
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432
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315 my_buf = (AuPointer) buf;
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428
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316
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317 id = AuSoundCreateBucketFromData (aud,
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318 s,
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319 my_buf,
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320 AuAccessAllMasks,
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321 NULL,
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322 NULL);
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323 if (buf == NULL)
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324 free (my_buf);
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325 }
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326 else /* found cached sound */
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327 {
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328 id = AuBucketIdentifier (list);
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329 AuFreeBucketAttributes (aud, n, list);
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330 }
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331
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332 sounds_in_play++;
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333
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334 AuSoundPlayFromBucket (aud,
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335 id,
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336 AuNone,
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337 AuFixedPointFromFraction (volume, 100),
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338 doneCB, (AuPointer) &sounds_in_play,
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339 1,
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340 NULL, NULL,
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341 NULL, NULL);
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342
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343 }
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344 #endif /* CACHE_SOUNDS */
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345
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346
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432
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347 void wait_for_sounds (void);
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428
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348 void
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349 wait_for_sounds (void)
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350
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351 {
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352 AuEvent ev;
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353
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354 while (sounds_in_play>0)
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355 {
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356 AuNextEvent (aud, AuTrue, &ev);
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357 AuDispatchEvent (aud, &ev);
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358 }
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359 }
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360
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432
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361 int play_sound_file (char *sound_file, int volume);
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428
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362 int
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363 play_sound_file (char *sound_file,
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364 int volume)
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365 {
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432
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366 SIGTYPE (*old_sigpipe) (int);
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428
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367
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368 #ifdef ROBUST_PLAY
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369 old_sigpipe=signal (SIGPIPE, sigpipe_handle);
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370 if (setjmp (AuXtErrorJump))
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371 {
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372 signal (SIGPIPE, old_sigpipe);
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373 return 0;
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374 }
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375 #endif
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376
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377 if (aud==NULL) {
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378 if (aud_server != NULL)
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379 {
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380 char *m;
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381 /* attempt to reconect */
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382 if ((m=init_play (aud_server))!= NULL)
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383 {
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384
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385 #ifdef ROBUST_PLAY
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386 signal (SIGPIPE, old_sigpipe);
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387 #endif
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388 return 0;
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389 }
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390 }
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391 else
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392 {
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393 warn ("Attempt to play with no audio init\n");
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394 #ifdef ROBUST_PLAY
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395 signal (SIGPIPE, old_sigpipe);
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396 #endif
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397 return 0;
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398 }
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399 }
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400
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401 #ifndef CACHE_SOUNDS
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402 sounds_in_play++;
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403 AuSoundPlayFromFile (aud,
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404 sound_file,
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405 AuNone,
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406 AuFixedPointFromFraction (volume,100),
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407 doneCB, (AuPointer) &sounds_in_play,
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408 NULL,
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409 NULL,
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410 NULL,
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411 NULL);
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412 #else
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413 /* Cache the sounds in buckets on the server */
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414
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415 {
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416 Sound s;
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417
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418 if ((s = SoundOpenFileForReading (sound_file))==NULL)
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419 {
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420 #ifdef ROBUST_PLAY
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421 signal (SIGPIPE, old_sigpipe);
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422 #endif
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423 return 0;
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424 }
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425
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426 if (SoundComment (s) == NULL || SoundComment (s)[0] == '\0')
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|
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427 {
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428 SoundComment (s) = FileCommentFromFilename (sound_file);
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429 }
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430
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|
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431 do_caching_play (s, volume, NULL);
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|
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432
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|
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433 SoundCloseFile (s);
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434
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|
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435 }
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|
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436 #endif /* CACHE_SOUNDS */
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|
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437
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|
|
438 #ifndef XTEVENTS
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|
|
439 wait_for_sounds ();
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|
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440 #else
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|
|
441 if (!NILP (Vsynchronous_sounds))
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|
|
442 {
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|
|
443 wait_for_sounds ();
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|
|
444 }
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|
|
445 #endif
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|
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446
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|
|
447 #ifdef ROBUST_PLAY
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|
|
448 signal (SIGPIPE, old_sigpipe);
|
|
|
449 #endif
|
|
|
450
|
|
|
451 return 1;
|
|
|
452 }
|
|
|
453
|
|
432
|
454 int play_sound_data (unsigned char *data, int length, int volume);
|
|
428
|
455 int
|
|
|
456 play_sound_data (unsigned char *data,
|
|
|
457 int length,
|
|
|
458 int volume)
|
|
|
459 {
|
|
|
460 Sound s;
|
|
|
461 int offset;
|
|
432
|
462 SIGTYPE (*old_sigpipe) (int);
|
|
428
|
463
|
|
|
464 #if !defined (XTEVENTS)
|
|
|
465 AuEvent ev;
|
|
|
466 #endif
|
|
|
467
|
|
|
468 #ifdef ROBUST_PLAY
|
|
|
469 old_sigpipe = signal (SIGPIPE, sigpipe_handle);
|
|
|
470 if (setjmp (AuXtErrorJump) !=0)
|
|
|
471 {
|
|
|
472 signal (SIGPIPE, old_sigpipe);
|
|
|
473 return 0;
|
|
|
474 }
|
|
|
475 #endif
|
|
|
476
|
|
|
477
|
|
|
478 if (aud == NULL) {
|
|
|
479 if (aud_server != NULL)
|
|
|
480 {
|
|
|
481 char *m;
|
|
|
482 /* attempt to reconect */
|
|
|
483 if ((m = init_play (aud_server)) != NULL)
|
|
|
484 {
|
|
|
485 #ifdef ROBUST_PLAY
|
|
|
486 signal (SIGPIPE, old_sigpipe);
|
|
|
487 #endif
|
|
|
488 return 0;
|
|
|
489 }
|
|
|
490 }
|
|
|
491 else
|
|
|
492 {
|
|
|
493 warn ("Attempt to play with no audio init\n");
|
|
|
494 #ifdef ROBUST_PLAY
|
|
|
495 signal (SIGPIPE, old_sigpipe);
|
|
|
496 #endif
|
|
|
497 return 0;
|
|
|
498 }
|
|
|
499 }
|
|
|
500
|
|
|
501 if ((s=SoundOpenDataForReading (data, length))==NULL)
|
|
|
502 {
|
|
|
503 warn ("unknown sound type");
|
|
|
504 #ifdef ROBUST_PLAY
|
|
|
505 signal (SIGPIPE, old_sigpipe);
|
|
|
506 #endif
|
|
|
507 return 0;
|
|
|
508 }
|
|
|
509
|
|
|
510 if (SoundFileFormat (s) == SoundFileFormatSnd)
|
|
|
511 {
|
|
|
512 /* hack, hack */
|
|
|
513 offset = ((SndInfo *) (s->formatInfo))->h.dataOffset;
|
|
|
514 }
|
|
|
515 else if (SoundFileFormat (s) == SoundFileFormatWave)
|
|
|
516 {
|
|
|
517 offset = ((WaveInfo *) (s->formatInfo))->dataOffset;
|
|
|
518 }
|
|
|
519 else
|
|
|
520 {
|
|
|
521 warn ("only understand snd and wave files at the moment");
|
|
|
522 SoundCloseFile (s);
|
|
|
523 #ifdef ROBUST_PLAY
|
|
|
524 signal (SIGPIPE, old_sigpipe);
|
|
|
525 #endif
|
|
|
526 return 0;
|
|
|
527 }
|
|
|
528
|
|
|
529 #ifndef CACHE_SOUNDS
|
|
|
530 sounds_in_play++;
|
|
|
531 AuSoundPlayFromData (aud,
|
|
|
532 s,
|
|
|
533 data+offset,
|
|
|
534 AuNone,
|
|
|
535 AuFixedPointFromFraction (volume,100),
|
|
|
536 doneCB, (AuPointer) &sounds_in_play,
|
|
|
537 NULL,
|
|
|
538 NULL,
|
|
|
539 NULL,
|
|
|
540 NULL);
|
|
|
541 #else
|
|
|
542 /* Cache the sounds in buckets on the server */
|
|
|
543
|
|
|
544 {
|
|
|
545 do_caching_play (s, volume, data+offset);
|
|
|
546 }
|
|
|
547 #endif /* CACHE_SOUNDS */
|
|
|
548
|
|
|
549
|
|
|
550 #ifndef XTEVENTS
|
|
|
551 wait_for_sounds ();
|
|
|
552 #else
|
|
|
553 if (!NILP (Vsynchronous_sounds))
|
|
|
554 {
|
|
|
555 wait_for_sounds ();
|
|
|
556 }
|
|
|
557 #endif
|
|
|
558
|
|
|
559 SoundCloseFile (s);
|
|
|
560
|
|
|
561 #ifdef ROBUST_PLAY
|
|
|
562 signal (SIGPIPE, old_sigpipe);
|
|
|
563 #endif
|
|
|
564
|
|
|
565 return 1;
|
|
|
566 }
|
|
|
567
|
|
|
568 #if defined (ROBUST_PLAY)
|
|
|
569
|
|
|
570 /********************************************************************\
|
|
|
571 * *
|
|
|
572 * Code to protect the client from server shutdowns. *
|
|
|
573 * *
|
|
|
574 * This is unbelievably horrible. *
|
|
|
575 * *
|
|
|
576 \********************************************************************/
|
|
|
577
|
|
|
578 static AuBool
|
|
|
579 CatchIoErrorAndJump (AuServer *old_aud)
|
|
|
580 {
|
|
|
581 if (old_aud)
|
|
|
582 warn ("Audio Server connection broken");
|
|
|
583 else
|
|
|
584 warn ("Audio Server connection broken because of signal");
|
|
|
585
|
|
|
586 #ifdef XTEVENTS
|
|
|
587 #ifdef XTOOLKIT
|
|
|
588 {
|
|
|
589 AuXtAppRemoveAudioHandler (aud, input_id);
|
|
|
590 }
|
|
|
591 #endif
|
|
|
592
|
|
|
593 if (aud)
|
|
|
594 AuCloseServer (aud);
|
|
|
595 aud = NULL;
|
|
|
596 sounds_in_play = 0;
|
|
|
597
|
|
|
598 longjmp (AuXtErrorJump, 1);
|
|
|
599
|
|
|
600 #else /* not XTEVENTS */
|
|
|
601
|
|
|
602 if (aud)
|
|
|
603 AuCloseServer (aud);
|
|
|
604 aud = NULL;
|
|
|
605 sounds_in_play = 0;
|
|
|
606 longjmp (AuXtErrorJump, 1);
|
|
|
607
|
|
|
608 #endif /* XTEVENTS */
|
|
|
609 return 0;
|
|
|
610 }
|
|
|
611
|
|
|
612 SIGTYPE
|
|
|
613 sigpipe_handle (int signo)
|
|
|
614 {
|
|
|
615 CatchIoErrorAndJump (NULL);
|
|
|
616 }
|
|
|
617
|
|
|
618 static AuBool
|
|
|
619 CatchErrorAndJump (AuServer *old_aud,
|
|
|
620 AuErrorEvent *event)
|
|
|
621 {
|
|
|
622 return CatchIoErrorAndJump (old_aud);
|
|
|
623 }
|
|
|
624
|
|
|
625 #endif /* ROBUST_PLAY */
|
|
|
626
|
|
|
627 /********************************************************************\
|
|
|
628 * *
|
|
|
629 * This code is here because the nas Sound library doesn't *
|
|
|
630 * support playing from a file buffered in memory. It's a fairly *
|
|
|
631 * direct translation of the file-based equivalent. *
|
|
|
632 * *
|
|
|
633 * Since we don't have a filename, samples with no comment field *
|
|
|
634 * are named by a section of their content. *
|
|
|
635 * *
|
|
|
636 \********************************************************************/
|
|
|
637
|
|
|
638 /* Create a name from the sound. */
|
|
|
639
|
|
|
640 static char *
|
|
442
|
641 NameFromData (const char *buf,
|
|
428
|
642 int len)
|
|
|
643
|
|
|
644 {
|
|
432
|
645 char name[9];
|
|
428
|
646 int i;
|
|
|
647 char *s;
|
|
|
648
|
|
|
649 buf+=len/2;
|
|
|
650 len -= len/2;
|
|
|
651
|
|
|
652 i=0;
|
|
|
653 while (i<8 && len >0)
|
|
|
654 {
|
|
|
655 while (*buf < 32 && len>0)
|
|
|
656 {
|
|
|
657 buf++;
|
|
|
658 len--;
|
|
|
659 }
|
|
|
660 name[i]= *buf;
|
|
|
661 i++;
|
|
|
662 buf++;
|
|
|
663 len--;
|
|
|
664 }
|
|
|
665
|
|
|
666 name[i]='\0';
|
|
|
667
|
|
|
668 if (i==8)
|
|
|
669 {
|
|
432
|
670 strcpy (s = (char *) malloc (10), name);
|
|
428
|
671 }
|
|
|
672 else
|
|
|
673 {
|
|
432
|
674 strcpy (s = (char *) malloc (15), "short sound");
|
|
428
|
675 }
|
|
|
676
|
|
|
677 return s;
|
|
|
678 }
|
|
|
679
|
|
|
680 /* Code to do a pseudo-open on a data buffer. Only for snd files at the
|
|
|
681 moment.
|
|
|
682 */
|
|
|
683
|
|
|
684 static SndInfo *
|
|
442
|
685 SndOpenDataForReading (const char *data,
|
|
428
|
686 int length)
|
|
|
687
|
|
|
688 {
|
|
|
689 SndInfo *si;
|
|
|
690 int size;
|
|
|
691
|
|
|
692 if (!(si = (SndInfo *) malloc (sizeof (SndInfo))))
|
|
|
693 return NULL;
|
|
|
694
|
|
|
695 si->comment = NULL;
|
|
|
696 si->writing = 0;
|
|
|
697
|
|
|
698 memcpy (&si->h, data, sizeof (SndHeader));
|
|
|
699
|
|
442
|
700 if (NAS_LITTLE_ENDIAN)
|
|
428
|
701 {
|
|
|
702 char n;
|
|
|
703
|
|
|
704 swapl (&si->h.magic, n);
|
|
|
705 swapl (&si->h.dataOffset, n);
|
|
|
706 swapl (&si->h.dataSize, n);
|
|
|
707 swapl (&si->h.format, n);
|
|
|
708 swapl (&si->h.sampleRate, n);
|
|
|
709 swapl (&si->h.tracks, n);
|
|
|
710 }
|
|
|
711
|
|
|
712 if (si->h.magic != SND_MAGIC_NUM)
|
|
|
713 {
|
|
|
714 free (si);
|
|
|
715 return NULL;
|
|
|
716 }
|
|
|
717
|
|
|
718 size = si->h.dataOffset - sizeof (SndHeader);
|
|
|
719
|
|
|
720 if (size)
|
|
|
721 {
|
|
|
722 if (!(si->comment = (char *) malloc (size + 1)))
|
|
|
723 {
|
|
|
724 free (si);
|
|
|
725 return NULL;
|
|
|
726 }
|
|
|
727
|
|
|
728 memcpy (si->comment, data+sizeof (SndHeader), size);
|
|
|
729
|
|
|
730 *(si->comment + size) = 0;
|
|
|
731 if (*si->comment == '\0')
|
|
|
732 si->comment =
|
|
|
733 NameFromData (data+si->h.dataOffset, length-si->h.dataOffset);
|
|
|
734 }
|
|
|
735 else
|
|
|
736 si->comment = NameFromData (data+si->h.dataOffset, length-si->h.dataOffset);
|
|
|
737
|
|
|
738 si->h.dataSize = length-si->h.dataOffset;
|
|
|
739
|
|
|
740 si->fp=NULL;
|
|
|
741
|
|
|
742 return si;
|
|
|
743 }
|
|
|
744
|
|
|
745 /* Stuff taken from wave.c from NAS. Just like snd files, NAS can't
|
|
|
746 read wave data from memory, so these functions do that for us. */
|
|
|
747
|
|
|
748 #define Err() { return NULL; }
|
|
|
749 #define readFourcc(_f) dread(_f, sizeof(RIFF_FOURCC), 1)
|
|
|
750 #define cmpID(_x, _y) \
|
|
|
751 strncmp((char *) (_x), (char *) (_y), sizeof(RIFF_FOURCC))
|
|
|
752 #define PAD2(_x) (((_x) + 1) & ~1)
|
|
|
753
|
|
|
754 /* These functions here are for faking file I/O from buffer. */
|
|
|
755
|
|
|
756 /* The "file" position */
|
|
432
|
757 static size_t file_posn;
|
|
428
|
758 /* The length of the "file" */
|
|
432
|
759 static size_t file_len;
|
|
428
|
760 /* The actual "file" data. */
|
|
442
|
761 static const void* file_data;
|
|
428
|
762
|
|
|
763 /* Like fopen, but for a buffer in memory */
|
|
|
764 static void
|
|
442
|
765 dopen (const void* data, size_t length)
|
|
428
|
766 {
|
|
|
767 file_data = data;
|
|
|
768 file_len = length;
|
|
|
769 file_posn = 0;
|
|
|
770 }
|
|
|
771
|
|
|
772 /* Like fread, but for a buffer in memory */
|
|
|
773 static int
|
|
432
|
774 dread (void* buf, size_t size, size_t nitems)
|
|
428
|
775 {
|
|
432
|
776 size_t nread = size * nitems;
|
|
428
|
777
|
|
|
778 if (file_posn + nread <= file_len)
|
|
|
779 {
|
|
432
|
780 memcpy(buf, (char *) file_data + file_posn, size * nitems);
|
|
428
|
781 file_posn += nread;
|
|
|
782 return nitems;
|
|
|
783 }
|
|
|
784 else
|
|
|
785 {
|
|
|
786 return EOF;
|
|
|
787 }
|
|
|
788 }
|
|
|
789
|
|
|
790 /* Like fgetc, but for a buffer in memory */
|
|
|
791 static int
|
|
432
|
792 dgetc (void)
|
|
428
|
793 {
|
|
|
794 if (file_posn < file_len)
|
|
432
|
795 return ((char *)file_data)[file_posn++];
|
|
428
|
796 else
|
|
|
797 return -1;
|
|
|
798 }
|
|
|
799
|
|
|
800 /* Like fseek, but for a buffer in memory */
|
|
|
801 static int
|
|
432
|
802 dseek (long offset, int from)
|
|
428
|
803 {
|
|
|
804 if (from == 0)
|
|
|
805 file_posn = offset;
|
|
|
806 else if (from == 1)
|
|
|
807 file_posn += offset;
|
|
|
808 else if (from == 2)
|
|
|
809 file_posn = file_len + offset;
|
|
|
810
|
|
|
811 return 0;
|
|
|
812 }
|
|
|
813
|
|
|
814 /* Like ftell, but for a buffer in memory */
|
|
432
|
815 static long
|
|
440
|
816 dtell (void)
|
|
428
|
817 {
|
|
|
818 return file_posn;
|
|
|
819 }
|
|
|
820
|
|
|
821 /* Data buffer analogs for FileReadS and FileReadL in NAS. */
|
|
|
822
|
|
|
823 static unsigned short
|
|
440
|
824 DataReadS (int swapit)
|
|
428
|
825 {
|
|
|
826 unsigned short us;
|
|
|
827
|
|
|
828 dread(&us, 2, 1);
|
|
|
829 if (swapit)
|
|
|
830 us = FileSwapS(us);
|
|
|
831 return us;
|
|
|
832 }
|
|
|
833
|
|
|
834 static AuUint32
|
|
440
|
835 DataReadL (int swapit)
|
|
428
|
836 {
|
|
|
837 AuUint32 ul;
|
|
|
838
|
|
|
839 dread(&ul, 4, 1);
|
|
|
840 if (swapit)
|
|
|
841 ul = FileSwapL(ul);
|
|
|
842 return ul;
|
|
|
843 }
|
|
|
844
|
|
|
845 static int
|
|
440
|
846 readChunk (RiffChunk *c)
|
|
428
|
847 {
|
|
|
848 int status;
|
|
|
849 char n;
|
|
|
850
|
|
|
851 if ((status = dread(c, sizeof(RiffChunk), 1)))
|
|
442
|
852 if (NAS_BIG_ENDIAN)
|
|
428
|
853 swapl(&c->ckSize, n);
|
|
|
854
|
|
|
855 return status;
|
|
|
856 }
|
|
|
857
|
|
|
858 /* A very straight-forward translation of WaveOpenFileForReading to
|
|
|
859 read the wave data from a buffer in memory. */
|
|
|
860
|
|
|
861 static WaveInfo *
|
|
442
|
862 WaveOpenDataForReading (const char *data,
|
|
440
|
863 int length)
|
|
428
|
864 {
|
|
|
865 RiffChunk ck;
|
|
|
866 RIFF_FOURCC fourcc;
|
|
|
867 AuInt32 fileSize;
|
|
|
868 WaveInfo *wi;
|
|
|
869
|
|
|
870
|
|
|
871 if (!(wi = (WaveInfo *) malloc(sizeof(WaveInfo))))
|
|
|
872 return NULL;
|
|
|
873
|
|
|
874 wi->comment = NULL;
|
|
|
875 wi->dataOffset = wi->format = wi->writing = 0;
|
|
|
876
|
|
|
877 dopen(data, length);
|
|
|
878
|
|
|
879 if (!readChunk(&ck) ||
|
|
|
880 cmpID(&ck.ckID, RIFF_RiffID) ||
|
|
|
881 !readFourcc(&fourcc) ||
|
|
|
882 cmpID(&fourcc, RIFF_WaveID))
|
|
|
883 Err();
|
|
|
884
|
|
|
885 fileSize = PAD2(ck.ckSize) - sizeof(RIFF_FOURCC);
|
|
|
886
|
|
|
887 while (fileSize >= sizeof(RiffChunk))
|
|
|
888 {
|
|
|
889 if (!readChunk(&ck))
|
|
|
890 Err();
|
|
|
891
|
|
|
892 fileSize -= sizeof(RiffChunk) + PAD2(ck.ckSize);
|
|
|
893
|
|
|
894 /* LIST chunk */
|
|
|
895 if (!cmpID(&ck.ckID, RIFF_ListID))
|
|
|
896 {
|
|
|
897 if (!readFourcc(&fourcc))
|
|
|
898 Err();
|
|
|
899
|
|
|
900 /* INFO chunk */
|
|
|
901 if (!cmpID(&fourcc, RIFF_ListInfoID))
|
|
|
902 {
|
|
|
903 ck.ckSize -= sizeof(RIFF_FOURCC);
|
|
|
904
|
|
|
905 while (ck.ckSize)
|
|
|
906 {
|
|
|
907 RiffChunk c;
|
|
|
908
|
|
|
909 if (!readChunk(&c))
|
|
|
910 Err();
|
|
|
911
|
|
|
912 /* ICMT chunk */
|
|
|
913 if (!cmpID(&c.ckID, RIFF_InfoIcmtID))
|
|
|
914 {
|
|
|
915 if (!(wi->comment = (char *) malloc(c.ckSize)) ||
|
|
|
916 !dread(wi->comment, c.ckSize, 1))
|
|
|
917 Err();
|
|
|
918
|
|
|
919 if (c.ckSize & 1)
|
|
|
920 dgetc(); /* eat the pad byte */
|
|
|
921 }
|
|
|
922 else
|
|
|
923 /* skip unknown chunk */
|
|
|
924 dseek(PAD2(c.ckSize), 1);
|
|
|
925
|
|
|
926 ck.ckSize -= sizeof(RiffChunk) + PAD2(c.ckSize);
|
|
|
927 }
|
|
|
928 }
|
|
|
929 else
|
|
|
930 /* skip unknown chunk */
|
|
|
931 dseek(PAD2(ck.ckSize) - sizeof(RIFF_FOURCC), 1);
|
|
|
932 }
|
|
|
933 /* wave format chunk */
|
|
|
934 else if (!cmpID(&ck.ckID, RIFF_WaveFmtID) && !wi->format)
|
|
|
935 {
|
|
|
936 AuInt32 dummy;
|
|
|
937
|
|
442
|
938 wi->format = DataReadS(NAS_BIG_ENDIAN);
|
|
|
939 wi->channels = DataReadS(NAS_BIG_ENDIAN);
|
|
|
940 wi->sampleRate = DataReadL(NAS_BIG_ENDIAN);
|
|
428
|
941
|
|
|
942 /* we don't care about the next two fields */
|
|
442
|
943 dummy = DataReadL(NAS_BIG_ENDIAN);
|
|
|
944 dummy = DataReadS(NAS_BIG_ENDIAN);
|
|
428
|
945
|
|
|
946 if (wi->format != RIFF_WAVE_FORMAT_PCM)
|
|
|
947 Err();
|
|
|
948
|
|
442
|
949 wi->bitsPerSample = DataReadS(NAS_BIG_ENDIAN);
|
|
428
|
950
|
|
|
951 /* skip any other format specific fields */
|
|
|
952 dseek(PAD2(ck.ckSize - 16), 1);
|
|
|
953 }
|
|
|
954 /* wave data chunk */
|
|
|
955 else if (!cmpID(&ck.ckID, RIFF_WaveDataID) && !wi->dataOffset)
|
|
|
956 {
|
|
|
957 long endOfFile;
|
|
|
958
|
|
|
959 wi->dataOffset = dtell();
|
|
|
960 wi->dataSize = ck.ckSize;
|
|
|
961 dseek(0, 2);
|
|
|
962 endOfFile = dtell();
|
|
|
963
|
|
|
964 /* seek past the data */
|
|
|
965 if (dseek(wi->dataOffset + PAD2(ck.ckSize), 0) ||
|
|
|
966 dtell() > endOfFile)
|
|
|
967 {
|
|
|
968 /* the seek failed, assume the size is bogus */
|
|
|
969 dseek(0, 2);
|
|
|
970 wi->dataSize = dtell() - wi->dataOffset;
|
|
|
971 }
|
|
|
972
|
|
|
973 wi->dataOffset -= sizeof(long);
|
|
|
974 }
|
|
|
975 else
|
|
|
976 /* skip unknown chunk */
|
|
|
977 dseek(PAD2(ck.ckSize), 1);
|
|
|
978 }
|
|
|
979
|
|
|
980 if (!wi->dataOffset)
|
|
|
981 Err();
|
|
|
982
|
|
|
983 wi->numSamples = wi->dataSize / wi->channels / (wi->bitsPerSample >> 3);
|
|
|
984
|
|
|
985 if (!wi->comment)
|
|
|
986 wi->comment = NameFromData (data + wi->dataOffset,
|
|
|
987 length - wi->dataOffset);
|
|
|
988
|
|
|
989 wi->fp = NULL;
|
|
|
990
|
|
|
991 return wi;
|
|
|
992 }
|
|
|
993
|
|
|
994
|
|
|
995 static Sound
|
|
|
996 SoundOpenDataForReading (unsigned char *data,
|
|
|
997 int length)
|
|
|
998
|
|
|
999 {
|
|
|
1000 Sound s;
|
|
|
1001
|
|
|
1002 if (!(s = (Sound) malloc (sizeof (SoundRec))))
|
|
|
1003 return NULL;
|
|
|
1004
|
|
432
|
1005 if ((s->formatInfo = SndOpenDataForReading ((char *) data, length)) != NULL)
|
|
428
|
1006 {
|
|
432
|
1007 if (!((int(*)(Sound))(SoundFileInfo[SoundFileFormatSnd].toSound)) (s))
|
|
428
|
1008 {
|
|
432
|
1009 SndCloseFile ((SndInfo *) (s->formatInfo));
|
|
428
|
1010 free (s);
|
|
|
1011 return NULL;
|
|
|
1012 }
|
|
|
1013 }
|
|
432
|
1014 else if ((s->formatInfo = WaveOpenDataForReading ((char *) data, length)) != NULL)
|
|
428
|
1015 {
|
|
432
|
1016 if (!((int(*)(Sound))(SoundFileInfo[SoundFileFormatWave].toSound)) (s))
|
|
428
|
1017 {
|
|
432
|
1018 WaveCloseFile ((WaveInfo *) (s->formatInfo));
|
|
428
|
1019 free (s);
|
|
|
1020 return NULL;
|
|
|
1021 }
|
|
|
1022 }
|
|
|
1023
|
|
|
1024 return s;
|
|
|
1025 }
|
