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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 #ifdef emacs
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51 # include <config.h>
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52 # include "lisp.h"
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53 # include "sysdep.h"
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54 # include "emacsfns.h"
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55 # include <errno.h>
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56 #include "syssignal.h"
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57 # define perror(string) \
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58 message("audio: %s, %s ", string, strerror (errno))
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59 # define warn(str) message ("audio: %s ", GETTEXT (str))
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60 #else /* !emacs */
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61 # define warn(str) fprintf (stderr, "%s\n", (str))
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62 #endif /* emacs */
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63
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64 static SIGTYPE (*sighup_handler) ();
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65 static SIGTYPE (*sigint_handler) ();
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66 static SIGTYPE sighandler (int sig);
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67
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68 static int audio_fd;
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69
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70 #define audio_open() open ("/dev/audio", (O_WRONLY | O_NDELAY), 0)
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71
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72 static int reset_volume_p, reset_device_p;
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73 static double old_volume;
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74 static Audio_hdr dev_hdr;
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75
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76 void play_sound_file (char *name, int volume);
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77 void play_sound_data (unsigned char *data, int length, int volume);
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78
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79 static int
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80 init_device (int volume, unsigned char *data, int fd,
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81 unsigned int *header_length)
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82 {
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83 #ifdef SUNOS4_0_3
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84 if (header_length) *header_length = 0;
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85 return 0;
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86 #else
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87 Audio_hdr file_hdr;
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88
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89 reset_volume_p = 0;
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90 reset_device_p = 0;
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91
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92 if (data && fd) abort (); /* one or the other */
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93
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94 if (AUDIO_SUCCESS != audio_get_play_config (audio_fd, &dev_hdr))
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95 {
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96 perror ("Not a valid audio device");
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97 return 1;
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98 }
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99
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100 if (AUDIO_SUCCESS != (data
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101 ? audio_decode_filehdr (data, &file_hdr, header_length)
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102 : audio_read_filehdr (fd, &file_hdr, 0, 0)))
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103 {
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104 if (data)
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105 perror ("invalid audio data");
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106 else
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107 perror ("invalid audio file");
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108 return 1;
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109 }
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110
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111 audio_flush_play (audio_fd);
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112
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113 if (0 != audio_cmp_hdr (&dev_hdr, &file_hdr))
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114 {
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115 Audio_hdr new_hdr;
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116 new_hdr = file_hdr;
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117 reset_device_p = 1;
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118 if (AUDIO_SUCCESS != audio_set_play_config (audio_fd, &new_hdr))
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119 {
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120 char buf1 [100], buf2 [100], buf3 [250];
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121 audio_enc_to_str (&file_hdr, buf1);
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122 audio_enc_to_str (&new_hdr, buf2);
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123 sprintf (buf3, "wanted %s, got %s", buf1, buf2);
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124 warn (buf3);
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125 return 1;
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126 }
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127 }
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128
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129 if (volume < 0 || volume > 100)
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130 {
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131 char buf [255];
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132 sprintf (buf, "volume must be between 0 and 100 (not %d)", volume);
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133 warn (buf);
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134 return 1;
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135 }
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136 {
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137 /* set the volume; scale it to 0.0 - 1.0 */
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138 double V = (volume / 100.0);
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139 audio_get_play_gain (audio_fd, &old_volume);
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140 reset_volume_p = 1;
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141 audio_set_play_gain (audio_fd, &V);
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142 }
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143
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144 return 0;
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145 #endif
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146 }
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147
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148
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149 static void
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150 reset_device (int wait_p)
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151 {
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152 if (wait_p)
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153 audio_drain (audio_fd, 1);
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154 else
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155 audio_flush_play (audio_fd);
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156 if (reset_device_p)
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157 audio_set_play_config (audio_fd, &dev_hdr);
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158 if (reset_volume_p)
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159 audio_set_play_gain (audio_fd, &old_volume);
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160 }
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161
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162
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163 void
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164 play_sound_file (char *sound_file, int volume)
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165 {
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166 int rrtn, wrtn;
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167 unsigned char buf [255];
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168 int file_fd;
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169
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170 audio_fd = audio_open ();
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171
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172 if (audio_fd < 0)
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173 {
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174 perror ("open /dev/audio");
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175 return;
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176 }
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177
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178 /* where to find the proto for signal()... */
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179 sighup_handler = (SIGTYPE (*) (int)) signal (SIGHUP, sighandler);
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180 sigint_handler = (SIGTYPE (*) (int)) signal (SIGINT, sighandler);
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181
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182 file_fd = open (sound_file, O_RDONLY, 0);
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183 if (file_fd < 0)
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184 {
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185 perror (sound_file);
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186 goto END_OF_PLAY;
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187 }
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188
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189 if (init_device (volume, (unsigned char *) 0, file_fd, (unsigned int *) 0))
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190 goto END_OF_PLAY;
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191
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192 while (1)
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193 {
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194 rrtn = read (file_fd, (char *) buf, sizeof (buf));
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195 if (rrtn < 0)
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196 {
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197 perror ("read");
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198 goto END_OF_PLAY;
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199 }
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200 if (rrtn == 0)
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201 break;
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202
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203 while (1)
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204 {
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205 wrtn = write (audio_fd, (char *) buf, rrtn);
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206 if (wrtn < 0)
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207 {
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208 perror ("write");
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209 goto END_OF_PLAY;
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210 }
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211 if (wrtn != 0)
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212 break;
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213
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214 if (AUDIO_ERR_INTERRUPTED == audio_drain (audio_fd, 1))
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215 goto END_OF_PLAY;
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216 }
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217 if (wrtn != rrtn)
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218 {
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16
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219 char warn_buf [255];
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220 sprintf (warn_buf, "play: rrtn = %d, wrtn = %d", rrtn, wrtn);
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221 warn (warn_buf);
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0
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222 goto END_OF_PLAY;
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223 }
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224 }
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225
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226 END_OF_PLAY:
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227
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228 if (file_fd > 0)
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229 close (file_fd);
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230
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231 if (audio_fd > 0)
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232 {
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233 reset_device (1);
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234 close (audio_fd);
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235 }
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236
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237 (void) signal (SIGHUP, sighup_handler);
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238 (void) signal (SIGINT, sigint_handler);
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239 }
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240
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241
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242 void
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243 play_sound_data (unsigned char *data, int length, int volume)
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244 {
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245 int wrtn, start = 0;
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246 unsigned int ilen;
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247
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248 audio_fd = -1;
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249
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250 if (length == 0) return;
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251
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252 /* this is just to get a better error message */
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253 if (strncmp (".snd\0", (char *) data, 4))
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254 {
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255 warn ("Not valid audio data (bad magic number)");
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256 goto END_OF_PLAY;
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257 }
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258 if (length <= sizeof (Audio_hdr))
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259 {
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260 warn ("Not valid audio data (too short)");
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261 goto END_OF_PLAY;
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262 }
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263
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264 audio_fd = audio_open ();
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265 if (audio_fd < 0)
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266 {
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267 perror ("open /dev/audio");
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268 return;
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269 }
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270
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271 /* where to find the proto for signal()... */
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272 sighup_handler = (SIGTYPE (*) (int)) signal (SIGHUP, sighandler);
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273 sigint_handler = (SIGTYPE (*) (int)) signal (SIGINT, sighandler);
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274
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275 if (init_device (volume, data, 0, &ilen))
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276 goto END_OF_PLAY;
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277
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278 data += (ilen<<2);
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279 length -= (ilen<<2);
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280 if (length <= 1)
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281 goto END_OF_PLAY;
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282
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283 while (1)
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284 {
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285 wrtn = write (audio_fd, (char *) (data+start), length-start);
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286 if (wrtn < 0)
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287 {
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288 perror ("write");
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289 goto END_OF_PLAY;
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290 }
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291 if (wrtn != 0)
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292 {
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293 start += wrtn;
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294 break;
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295 }
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296 if (AUDIO_ERR_INTERRUPTED == audio_drain (audio_fd, 1))
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297 goto END_OF_PLAY;
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298 }
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299 if (wrtn != length)
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300 {
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301 char buf [255];
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302 sprintf (buf, "play: rrtn = %d, wrtn = %d", length, wrtn);
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303 warn (buf);
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304 goto END_OF_PLAY;
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305 }
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306
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307 END_OF_PLAY:
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308
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309 if (audio_fd > 0)
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310 {
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311 reset_device (1);
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312 close (audio_fd);
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313 }
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314
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315 (void) signal (SIGHUP, sighup_handler);
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316 (void) signal (SIGINT, sigint_handler);
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317 }
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318
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319 /* #### sigcontext doesn't exist in Solaris. This should be updated
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320 to be correct for Solaris. */
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321 static void
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322 sighandler (int sig)
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323 {
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324 if (audio_fd > 0)
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325 {
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326 reset_device (0);
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327 close (audio_fd);
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328 }
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329 if (sig == SIGHUP && sighup_handler)
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330 sighup_handler (sig);
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331 else if (sig == SIGINT && sigint_handler)
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332 sigint_handler (sig);
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333 else
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334 exit (1);
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335 }
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