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0
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1 /* play.c - play a sound file on the speaker
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2 **
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3 ** Copyright (C) 1989 by Jef Poskanzer.
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4 **
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5 ** Modified 24-May-91 by Jamie Zawinski (for Lucid Emacs).
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6 ** Modified 17-Dec-92 by Jamie Zawinski (largely rewritten for SunOS 4.1.3).
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7 **
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8 ** Permission to use, copy, modify, and distribute this software and its
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9 ** documentation for any purpose and without fee is hereby granted, 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. This software is provided "as is" without express or
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13 ** implied warranty.
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14 */
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15
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16 /* Synched up with: Not in FSF. */
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17
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18 #ifdef HAVE_CONFIG_H
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19 #include <config.h>
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20 #endif
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21
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22 #if __STDC__ || defined(STDC_HEADERS)
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23 #include <stdlib.h>
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24 #include <unistd.h>
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25 #include <fcntl.h> /* for open() */
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26 #endif
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27
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28 #include <stdio.h>
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29 #include <string.h>
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30 #ifndef emacs
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31 #include <sys/signal.h>
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32 #endif
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33 #include <sys/fcntl.h>
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34 #include <sys/file.h>
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35
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2
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36 /* libaudio.h includes a header which defines CONST. We temporarily
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37 undefine it in order to eliminate a compiler warning. Yes, this is
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38 a hack. */
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39 #undef CONST
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0
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40 #include <multimedia/libaudio.h>
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41 #include <multimedia/audio_device.h>
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42
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2
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43 #undef CONST
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44 #ifdef CONST_IS_LOSING
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45 # define CONST
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46 #else
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47 # define CONST const
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48 #endif /* CONST */
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49
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0
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50 #if __STDC__ || defined(STDC_HEADERS) /* warning suppression */
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51 extern int audio__setplayhdr();
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52 extern int audio__setgain();
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53 extern int audio__flush();
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54 extern int audio_decode_filehdr();
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55 extern int audio_read_filehdr();
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56 extern int audio_cmp_hdr();
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57 extern int audio_enc_to_str();
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58 extern int audio_drain();
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59 #endif
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60
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61
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62 #ifdef emacs
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63 # include <config.h>
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64 # include "lisp.h"
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65 # include "sysdep.h"
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66 # include "emacsfns.h"
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67 # include <errno.h>
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68 #include "syssignal.h"
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69 # define perror(string) \
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70 message("audio: %s, %s ", string, strerror (errno))
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71 # define warn(str) message ("audio: %s ", GETTEXT (str))
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72 #else /* !emacs */
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73 # define warn(str) fprintf (stderr, "%s\n", (str))
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74 #endif /* emacs */
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75
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76 static SIGTYPE (*sighup_handler) ();
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77 static SIGTYPE (*sigint_handler) ();
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78 static SIGTYPE sighandler (int sig);
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79
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80 static int audio_fd;
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81
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82 #define audio_open() open ("/dev/audio", (O_WRONLY | O_NDELAY), 0)
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83
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84 static int reset_volume_p, reset_device_p;
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85 static double old_volume;
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86 static Audio_hdr dev_hdr;
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87
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88 void play_sound_file (char *name, int volume);
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89 void play_sound_data (unsigned char *data, int length, int volume);
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90
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91 static int
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92 init_device (int volume, unsigned char *data, int fd,
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93 unsigned int *header_length)
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94 {
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95 #ifdef SUNOS4_0_3
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96 if (header_length) *header_length = 0;
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97 return 0;
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98 #else
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99 Audio_hdr file_hdr;
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100
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101 reset_volume_p = 0;
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102 reset_device_p = 0;
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103
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104 if (data && fd) abort (); /* one or the other */
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105
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106 if (AUDIO_SUCCESS != audio_get_play_config (audio_fd, &dev_hdr))
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107 {
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108 perror ("Not a valid audio device");
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109 return 1;
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110 }
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111
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112 if (AUDIO_SUCCESS != (data
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113 ? audio_decode_filehdr (data, &file_hdr, header_length)
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114 : audio_read_filehdr (fd, &file_hdr, 0, 0)))
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115 {
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116 if (data)
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117 perror ("invalid audio data");
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118 else
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119 perror ("invalid audio file");
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120 return 1;
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121 }
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122
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123 audio_flush_play (audio_fd);
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124
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125 if (0 != audio_cmp_hdr (&dev_hdr, &file_hdr))
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126 {
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127 Audio_hdr new_hdr;
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128 new_hdr = file_hdr;
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129 reset_device_p = 1;
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130 if (AUDIO_SUCCESS != audio_set_play_config (audio_fd, &new_hdr))
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131 {
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132 char buf1 [100], buf2 [100], buf3 [250];
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133 audio_enc_to_str (&file_hdr, buf1);
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134 audio_enc_to_str (&new_hdr, buf2);
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135 sprintf (buf3, "wanted %s, got %s", buf1, buf2);
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136 warn (buf3);
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137 return 1;
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138 }
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139 }
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140
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141 if (volume < 0 || volume > 100)
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142 {
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143 char buf [255];
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144 sprintf (buf, "volume must be between 0 and 100 (not %d)", volume);
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145 warn (buf);
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146 return 1;
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147 }
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148 {
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149 /* set the volume; scale it to 0.0 - 1.0 */
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150 double V = (volume / 100.0);
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151 audio_get_play_gain (audio_fd, &old_volume);
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152 reset_volume_p = 1;
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153 audio_set_play_gain (audio_fd, &V);
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154 }
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155
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156 return 0;
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157 #endif
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158 }
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159
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160
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161 static void
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162 reset_device (int wait_p)
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163 {
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164 if (wait_p)
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165 audio_drain (audio_fd, 1);
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166 else
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167 audio_flush_play (audio_fd);
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168 if (reset_device_p)
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169 audio_set_play_config (audio_fd, &dev_hdr);
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170 if (reset_volume_p)
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171 audio_set_play_gain (audio_fd, &old_volume);
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172 }
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173
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174
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175 void
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176 play_sound_file (char *sound_file, int volume)
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177 {
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178 int rrtn, wrtn;
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179 unsigned char buf [255];
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180 int file_fd;
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181
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182 audio_fd = audio_open ();
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183
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184 if (audio_fd < 0)
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185 {
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186 perror ("open /dev/audio");
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187 return;
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188 }
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189
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190 /* where to find the proto for signal()... */
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191 sighup_handler = (SIGTYPE (*) (int)) signal (SIGHUP, sighandler);
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192 sigint_handler = (SIGTYPE (*) (int)) signal (SIGINT, sighandler);
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193
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194 file_fd = open (sound_file, O_RDONLY, 0);
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195 if (file_fd < 0)
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196 {
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197 perror (sound_file);
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198 goto END_OF_PLAY;
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199 }
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200
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201 if (init_device (volume, (unsigned char *) 0, file_fd, (unsigned int *) 0))
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202 goto END_OF_PLAY;
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203
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204 while (1)
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205 {
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206 rrtn = read (file_fd, (char *) buf, sizeof (buf));
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207 if (rrtn < 0)
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208 {
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209 perror ("read");
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210 goto END_OF_PLAY;
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211 }
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212 if (rrtn == 0)
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213 break;
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214
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215 while (1)
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216 {
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217 wrtn = write (audio_fd, (char *) buf, rrtn);
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218 if (wrtn < 0)
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219 {
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220 perror ("write");
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221 goto END_OF_PLAY;
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222 }
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223 if (wrtn != 0)
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224 break;
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225
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226 if (AUDIO_ERR_INTERRUPTED == audio_drain (audio_fd, 1))
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227 goto END_OF_PLAY;
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228 }
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229 if (wrtn != rrtn)
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230 {
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16
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231 char warn_buf [255];
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232 sprintf (warn_buf, "play: rrtn = %d, wrtn = %d", rrtn, wrtn);
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233 warn (warn_buf);
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0
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234 goto END_OF_PLAY;
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235 }
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236 }
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237
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238 END_OF_PLAY:
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239
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240 if (file_fd > 0)
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241 close (file_fd);
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242
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243 if (audio_fd > 0)
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244 {
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245 reset_device (1);
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246 close (audio_fd);
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247 }
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248
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249 (void) signal (SIGHUP, sighup_handler);
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250 (void) signal (SIGINT, sigint_handler);
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251 }
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252
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253
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254 void
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255 play_sound_data (unsigned char *data, int length, int volume)
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256 {
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257 int wrtn, start = 0;
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258 unsigned int ilen;
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259
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260 audio_fd = -1;
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261
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262 if (length == 0) return;
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263
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264 /* this is just to get a better error message */
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265 if (strncmp (".snd\0", (char *) data, 4))
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266 {
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267 warn ("Not valid audio data (bad magic number)");
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268 goto END_OF_PLAY;
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269 }
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270 if (length <= sizeof (Audio_hdr))
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271 {
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272 warn ("Not valid audio data (too short)");
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273 goto END_OF_PLAY;
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274 }
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275
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276 audio_fd = audio_open ();
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277 if (audio_fd < 0)
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278 {
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279 perror ("open /dev/audio");
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280 return;
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281 }
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282
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283 /* where to find the proto for signal()... */
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284 sighup_handler = (SIGTYPE (*) (int)) signal (SIGHUP, sighandler);
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285 sigint_handler = (SIGTYPE (*) (int)) signal (SIGINT, sighandler);
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286
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287 if (init_device (volume, data, 0, &ilen))
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288 goto END_OF_PLAY;
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289
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290 data += (ilen<<2);
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291 length -= (ilen<<2);
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292 if (length <= 1)
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293 goto END_OF_PLAY;
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294
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295 while (1)
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296 {
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297 wrtn = write (audio_fd, (char *) (data+start), length-start);
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298 if (wrtn < 0)
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299 {
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300 perror ("write");
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301 goto END_OF_PLAY;
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302 }
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303 if (wrtn != 0)
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304 {
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305 start += wrtn;
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306 break;
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307 }
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308 if (AUDIO_ERR_INTERRUPTED == audio_drain (audio_fd, 1))
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309 goto END_OF_PLAY;
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310 }
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311 if (wrtn != length)
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312 {
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313 char buf [255];
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314 sprintf (buf, "play: rrtn = %d, wrtn = %d", length, wrtn);
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315 warn (buf);
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316 goto END_OF_PLAY;
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317 }
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318
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319 END_OF_PLAY:
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320
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321 if (audio_fd > 0)
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322 {
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323 reset_device (1);
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324 close (audio_fd);
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325 }
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326
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327 (void) signal (SIGHUP, sighup_handler);
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328 (void) signal (SIGINT, sigint_handler);
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329 }
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330
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331 /* #### sigcontext doesn't exist in Solaris. This should be updated
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332 to be correct for Solaris. */
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333 static void
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334 sighandler (int sig)
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335 {
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336 if (audio_fd > 0)
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337 {
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338 reset_device (0);
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339 close (audio_fd);
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340 }
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341 if (sig == SIGHUP && sighup_handler)
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342 sighup_handler (sig);
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343 else if (sig == SIGINT && sigint_handler)
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344 sigint_handler (sig);
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345 else
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346 exit (1);
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347 }
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