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