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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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2
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38
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0
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39 #ifdef emacs
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40 # include <config.h>
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41 # include "lisp.h"
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42 # include "sysdep.h"
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43 # include <errno.h>
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44 #include "syssignal.h"
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45 # define perror(string) \
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46 message("audio: %s, %s ", string, strerror (errno))
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47 # define warn(str) message ("audio: %s ", GETTEXT (str))
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48 #else /* !emacs */
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49 # define warn(str) fprintf (stderr, "%s\n", (str))
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50 #endif /* emacs */
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51
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185
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52 static SIGTYPE (*sighup_handler) (int sig);
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53 static SIGTYPE (*sigint_handler) (int sig);
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0
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54 static SIGTYPE sighandler (int sig);
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55
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56 static int audio_fd;
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57
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380
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58 #define audio_open() open ("/dev/audio", (O_WRONLY | O_NONBLOCK), 0)
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0
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59
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60 static int reset_volume_p, reset_device_p;
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61 static double old_volume;
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62 static Audio_hdr dev_hdr;
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63
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64 void play_sound_file (char *name, int volume);
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65 void play_sound_data (unsigned char *data, int length, int volume);
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66
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67 static int
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68 init_device (int volume, unsigned char *data, int fd,
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69 unsigned int *header_length)
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70 {
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71 #ifdef SUNOS4_0_3
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72 if (header_length) *header_length = 0;
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73 return 0;
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74 #else
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75 Audio_hdr file_hdr;
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185
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76
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0
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77 reset_volume_p = 0;
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78 reset_device_p = 0;
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79
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80 if (data && fd) abort (); /* one or the other */
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81
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82 if (AUDIO_SUCCESS != audio_get_play_config (audio_fd, &dev_hdr))
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83 {
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84 perror ("Not a valid audio device");
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85 return 1;
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86 }
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185
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87
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0
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88 if (AUDIO_SUCCESS != (data
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89 ? audio_decode_filehdr (data, &file_hdr, header_length)
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90 : audio_read_filehdr (fd, &file_hdr, 0, 0)))
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91 {
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92 if (data)
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93 perror ("invalid audio data");
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94 else
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95 perror ("invalid audio file");
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96 return 1;
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97 }
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185
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98
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0
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99 audio_flush_play (audio_fd);
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100
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101 if (0 != audio_cmp_hdr (&dev_hdr, &file_hdr))
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102 {
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103 Audio_hdr new_hdr;
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104 new_hdr = file_hdr;
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105 reset_device_p = 1;
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106 if (AUDIO_SUCCESS != audio_set_play_config (audio_fd, &new_hdr))
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107 {
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108 char buf1 [100], buf2 [100], buf3 [250];
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109 audio_enc_to_str (&file_hdr, buf1);
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110 audio_enc_to_str (&new_hdr, buf2);
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111 sprintf (buf3, "wanted %s, got %s", buf1, buf2);
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112 warn (buf3);
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113 return 1;
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114 }
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115 }
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116
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117 if (volume < 0 || volume > 100)
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118 {
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119 char buf [255];
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120 sprintf (buf, "volume must be between 0 and 100 (not %d)", volume);
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121 warn (buf);
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122 return 1;
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123 }
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124 {
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125 /* set the volume; scale it to 0.0 - 1.0 */
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126 double V = (volume / 100.0);
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127 audio_get_play_gain (audio_fd, &old_volume);
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128 reset_volume_p = 1;
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129 audio_set_play_gain (audio_fd, &V);
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130 }
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131
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132 return 0;
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133 #endif
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134 }
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135
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136
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137 static void
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138 reset_device (int wait_p)
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139 {
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140 if (wait_p)
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141 audio_drain (audio_fd, 1);
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142 else
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143 audio_flush_play (audio_fd);
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144 if (reset_device_p)
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145 audio_set_play_config (audio_fd, &dev_hdr);
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146 if (reset_volume_p)
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147 audio_set_play_gain (audio_fd, &old_volume);
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148 }
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149
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150
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151 void
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152 play_sound_file (char *sound_file, int volume)
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153 {
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154 int rrtn, wrtn;
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155 unsigned char buf [255];
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156 int file_fd;
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185
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157
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0
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158 audio_fd = audio_open ();
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159
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160 if (audio_fd < 0)
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161 {
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162 perror ("open /dev/audio");
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163 return;
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164 }
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165
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166 /* where to find the proto for signal()... */
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167 sighup_handler = (SIGTYPE (*) (int)) signal (SIGHUP, sighandler);
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168 sigint_handler = (SIGTYPE (*) (int)) signal (SIGINT, sighandler);
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185
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169
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0
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170 file_fd = open (sound_file, O_RDONLY, 0);
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171 if (file_fd < 0)
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172 {
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173 perror (sound_file);
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174 goto END_OF_PLAY;
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175 }
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176
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177 if (init_device (volume, (unsigned char *) 0, file_fd, (unsigned int *) 0))
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178 goto END_OF_PLAY;
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185
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179
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0
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180 while (1)
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181 {
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182 rrtn = read (file_fd, (char *) buf, sizeof (buf));
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183 if (rrtn < 0)
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184 {
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185 perror ("read");
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186 goto END_OF_PLAY;
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187 }
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188 if (rrtn == 0)
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189 break;
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185
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190
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0
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191 while (1)
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192 {
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193 wrtn = write (audio_fd, (char *) buf, rrtn);
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194 if (wrtn < 0)
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195 {
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196 perror ("write");
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197 goto END_OF_PLAY;
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198 }
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199 if (wrtn != 0)
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200 break;
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201
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202 if (AUDIO_ERR_INTERRUPTED == audio_drain (audio_fd, 1))
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203 goto END_OF_PLAY;
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204 }
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205 if (wrtn != rrtn)
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206 {
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16
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207 char warn_buf [255];
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208 sprintf (warn_buf, "play: rrtn = %d, wrtn = %d", rrtn, wrtn);
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209 warn (warn_buf);
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0
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210 goto END_OF_PLAY;
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211 }
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212 }
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185
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213
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0
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214 END_OF_PLAY:
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215
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216 if (file_fd > 0)
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217 close (file_fd);
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218
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219 if (audio_fd > 0)
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220 {
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221 reset_device (1);
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222 close (audio_fd);
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223 }
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224
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183
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225 signal (SIGHUP, sighup_handler);
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226 signal (SIGINT, sigint_handler);
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0
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227 }
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228
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229
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230 void
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231 play_sound_data (unsigned char *data, int length, int volume)
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232 {
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233 int wrtn, start = 0;
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234 unsigned int ilen;
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235
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236 audio_fd = -1;
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237
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238 if (length == 0) return;
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239
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240 /* this is just to get a better error message */
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241 if (strncmp (".snd\0", (char *) data, 4))
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242 {
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243 warn ("Not valid audio data (bad magic number)");
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244 goto END_OF_PLAY;
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245 }
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246 if (length <= sizeof (Audio_hdr))
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247 {
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248 warn ("Not valid audio data (too short)");
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249 goto END_OF_PLAY;
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250 }
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251
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252 audio_fd = audio_open ();
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253 if (audio_fd < 0)
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254 {
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255 perror ("open /dev/audio");
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256 return;
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257 }
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258
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259 /* where to find the proto for signal()... */
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260 sighup_handler = (SIGTYPE (*) (int)) signal (SIGHUP, sighandler);
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261 sigint_handler = (SIGTYPE (*) (int)) signal (SIGINT, sighandler);
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185
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262
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0
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263 if (init_device (volume, data, 0, &ilen))
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264 goto END_OF_PLAY;
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185
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265
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0
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266 data += (ilen<<2);
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267 length -= (ilen<<2);
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268 if (length <= 1)
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269 goto END_OF_PLAY;
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185
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270
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0
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271 while (1)
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272 {
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273 wrtn = write (audio_fd, (char *) (data+start), length-start);
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274 if (wrtn < 0)
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275 {
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276 perror ("write");
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277 goto END_OF_PLAY;
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278 }
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279 if (wrtn != 0)
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280 {
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281 start += wrtn;
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282 break;
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283 }
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284 if (AUDIO_ERR_INTERRUPTED == audio_drain (audio_fd, 1))
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285 goto END_OF_PLAY;
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286 }
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287 if (wrtn != length)
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288 {
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289 char buf [255];
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290 sprintf (buf, "play: rrtn = %d, wrtn = %d", length, wrtn);
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291 warn (buf);
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292 goto END_OF_PLAY;
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293 }
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185
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294
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0
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295 END_OF_PLAY:
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296
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297 if (audio_fd > 0)
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298 {
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299 reset_device (1);
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300 close (audio_fd);
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301 }
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302
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183
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303 signal (SIGHUP, sighup_handler);
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304 signal (SIGINT, sigint_handler);
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0
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305 }
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306
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307 /* #### sigcontext doesn't exist in Solaris. This should be updated
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308 to be correct for Solaris. */
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398
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309 static SIGTYPE
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0
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310 sighandler (int sig)
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311 {
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312 if (audio_fd > 0)
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313 {
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314 reset_device (0);
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315 close (audio_fd);
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316 }
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317 if (sig == SIGHUP && sighup_handler)
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318 sighup_handler (sig);
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319 else if (sig == SIGINT && sigint_handler)
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320 sigint_handler (sig);
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321 else
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322 exit (1);
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323 }
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