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428
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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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563
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18 /* This file Mule-ized by Ben Wing, 5-15-01. */
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428
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19
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609
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20 #define DONT_ENCAPSULATE
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21
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563
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22 #include <config.h>
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23 #include "lisp.h"
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24 #include "sound.h"
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428
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25
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563
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26 #include "sysdep.h"
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27 #include "sysfile.h"
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28 #include "syssignal.h"
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428
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29
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30 #include <multimedia/libaudio.h>
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31 #include <multimedia/audio_device.h>
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32
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33 static SIGTYPE (*sighup_handler) (int sig);
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34 static SIGTYPE (*sigint_handler) (int sig);
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35 static SIGTYPE sighandler (int sig);
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36
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37 static int audio_fd;
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38
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39 #define audio_open() open ("/dev/audio", (O_WRONLY | O_NONBLOCK), 0)
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40
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442
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41 static int initialized_device_p;
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428
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42 static int reset_volume_p, reset_device_p;
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43 static double old_volume;
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44 static Audio_hdr dev_hdr;
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45
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46 static int
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563
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47 init_device (int volume, UChar_Binary *data, int fd,
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428
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48 unsigned int *header_length)
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49 {
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50 #ifdef SUNOS4_0_3
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51 if (header_length) *header_length = 0;
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52 return 0;
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53 #else
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54 Audio_hdr file_hdr;
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55
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56 reset_volume_p = 0;
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57 reset_device_p = 0;
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58
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59 if (data && fd) abort (); /* one or the other */
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60
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61 if (AUDIO_SUCCESS != audio_get_play_config (audio_fd, &dev_hdr))
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62 {
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563
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63 sound_perror ("Not a valid audio device");
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428
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64 return 1;
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65 }
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66
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67 if (AUDIO_SUCCESS != (data
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68 ? audio_decode_filehdr (data, &file_hdr, header_length)
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69 : audio_read_filehdr (fd, &file_hdr, 0, 0)))
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70 {
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71 if (data)
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563
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72 sound_perror ("invalid audio data");
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428
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73 else
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563
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74 sound_perror ("invalid audio file");
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428
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75 return 1;
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76 }
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77
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78 audio_flush_play (audio_fd);
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79
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442
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80 if (!initialized_device_p || (0 != audio_cmp_hdr (&dev_hdr, &file_hdr)))
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428
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81 {
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82 Audio_hdr new_hdr;
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83 new_hdr = file_hdr;
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84 reset_device_p = 1;
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442
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85 initialized_device_p = 1;
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428
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86 if (AUDIO_SUCCESS != audio_set_play_config (audio_fd, &new_hdr))
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87 {
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563
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88 Extbyte buf1 [100], buf2 [100], buf3 [250];
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428
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89 audio_enc_to_str (&file_hdr, buf1);
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90 audio_enc_to_str (&new_hdr, buf2);
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91 sprintf (buf3, "wanted %s, got %s", buf1, buf2);
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563
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92 sound_warn (buf3);
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428
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93 return 1;
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94 }
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95 }
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96
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97 if (volume < 0 || volume > 100)
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98 {
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563
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99 Extbyte buf [255];
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428
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100 sprintf (buf, "volume must be between 0 and 100 (not %d)", volume);
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563
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101 sound_warn (buf);
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428
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102 return 1;
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103 }
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104 {
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105 /* set the volume; scale it to 0.0 - 1.0 */
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106 double V = (volume / 100.0);
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107 audio_get_play_gain (audio_fd, &old_volume);
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108 reset_volume_p = 1;
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109 audio_set_play_gain (audio_fd, &V);
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110 }
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111
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112 return 0;
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113 #endif
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114 }
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115
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116
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117 static void
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118 reset_device (int wait_p)
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119 {
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120 if (wait_p)
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121 audio_drain (audio_fd, 1);
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122 else
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123 audio_flush_play (audio_fd);
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124 if (reset_device_p)
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125 audio_set_play_config (audio_fd, &dev_hdr);
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126 if (reset_volume_p)
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127 audio_set_play_gain (audio_fd, &old_volume);
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128 }
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129
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130
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131 void
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563
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132 play_sound_file (Extbyte *sound_file, int volume)
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428
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133 {
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134 int rrtn, wrtn;
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563
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135 UChar_Binary buf [255];
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428
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136 int file_fd;
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137
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138 audio_fd = audio_open ();
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139
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140 if (audio_fd < 0)
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141 {
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563
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142 sound_perror ("open /dev/audio");
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428
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143 return;
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144 }
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145
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146 /* where to find the proto for signal()... */
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613
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147 sighup_handler = (SIGTYPE (*) (int)) EMACS_SIGNAL (SIGHUP, sighandler);
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148 sigint_handler = (SIGTYPE (*) (int)) EMACS_SIGNAL (SIGINT, sighandler);
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428
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149
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150 file_fd = open (sound_file, O_RDONLY, 0);
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151 if (file_fd < 0)
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152 {
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563
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153 sound_perror (sound_file);
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428
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154 goto END_OF_PLAY;
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155 }
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156
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563
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157 if (init_device (volume, (UChar_Binary *) 0, file_fd, (unsigned int *) 0))
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428
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158 goto END_OF_PLAY;
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159
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160 while (1)
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161 {
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563
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162 rrtn = read (file_fd, (Char_Binary *) buf, sizeof (buf));
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428
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163 if (rrtn < 0)
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164 {
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563
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165 sound_perror ("read");
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428
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166 goto END_OF_PLAY;
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167 }
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168 if (rrtn == 0)
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169 break;
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170
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171 while (1)
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172 {
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563
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173 wrtn = write (audio_fd, (Char_Binary *) buf, rrtn);
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428
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174 if (wrtn < 0)
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175 {
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563
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176 sound_perror ("write");
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428
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177 goto END_OF_PLAY;
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178 }
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179 if (wrtn != 0)
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180 break;
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181
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182 if (AUDIO_ERR_INTERRUPTED == audio_drain (audio_fd, 1))
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183 goto END_OF_PLAY;
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184 }
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185 if (wrtn != rrtn)
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186 {
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563
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187 Extbyte warn_buf [255];
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428
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188 sprintf (warn_buf, "play: rrtn = %d, wrtn = %d", rrtn, wrtn);
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563
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189 sound_warn (warn_buf);
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428
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190 goto END_OF_PLAY;
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191 }
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192 }
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193
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194 END_OF_PLAY:
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195
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196 if (file_fd > 0)
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197 close (file_fd);
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198
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199 if (audio_fd > 0)
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200 {
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201 reset_device (1);
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202 close (audio_fd);
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203 }
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204
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613
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205 EMACS_SIGNAL (SIGHUP, sighup_handler);
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206 EMACS_SIGNAL (SIGINT, sigint_handler);
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428
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207 }
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208
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209
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442
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210 int
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563
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211 play_sound_data (UChar_Binary *data, int length, int volume)
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428
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212 {
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213 int wrtn, start = 0;
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214 unsigned int ilen;
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442
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215 int result = 0;
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428
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216
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217 audio_fd = -1;
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218
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442
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219 if (length == 0) return 0;
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428
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220
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221 /* this is just to get a better error message */
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563
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222 if (strncmp (".snd\0", (Char_Binary *) data, 4))
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428
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223 {
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563
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224 sound_warn ("Not valid audio data (bad magic number)");
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428
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225 goto END_OF_PLAY;
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226 }
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227 if (length <= sizeof (Audio_hdr))
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228 {
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563
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229 sound_warn ("Not valid audio data (too short)");
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428
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230 goto END_OF_PLAY;
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231 }
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232
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233 audio_fd = audio_open ();
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234 if (audio_fd < 0)
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442
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235 return 0;
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428
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236
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237 /* where to find the proto for signal()... */
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613
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238 sighup_handler = (SIGTYPE (*) (int)) EMACS_SIGNAL (SIGHUP, sighandler);
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239 sigint_handler = (SIGTYPE (*) (int)) EMACS_SIGNAL (SIGINT, sighandler);
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428
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240
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241 if (init_device (volume, data, 0, &ilen))
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242 goto END_OF_PLAY;
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243
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244 data += (ilen<<2);
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245 length -= (ilen<<2);
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246 if (length <= 1)
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247 goto END_OF_PLAY;
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248
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249 while (1)
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250 {
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563
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251 wrtn = write (audio_fd, (Char_Binary *) (data+start), length-start);
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428
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252 if (wrtn < 0)
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253 {
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563
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254 sound_perror ("write");
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428
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255 goto END_OF_PLAY;
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256 }
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257 if (wrtn != 0)
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258 {
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259 start += wrtn;
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260 break;
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261 }
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262 if (AUDIO_ERR_INTERRUPTED == audio_drain (audio_fd, 1))
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263 goto END_OF_PLAY;
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264 }
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265 if (wrtn != length)
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266 {
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563
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267 Extbyte buf [255];
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428
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268 sprintf (buf, "play: rrtn = %d, wrtn = %d", length, wrtn);
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563
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269 sound_warn (buf);
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428
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270 goto END_OF_PLAY;
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271 }
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272
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442
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273 result = 1;
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274
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428
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275 END_OF_PLAY:
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276
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277 if (audio_fd > 0)
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278 {
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279 reset_device (1);
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280 close (audio_fd);
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281 }
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282
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613
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283 EMACS_SIGNAL (SIGHUP, sighup_handler);
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284 EMACS_SIGNAL (SIGINT, sigint_handler);
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442
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285
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286 return result;
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428
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287 }
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288
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289 /* #### sigcontext doesn't exist in Solaris. This should be updated
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290 to be correct for Solaris. */
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442
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291 static SIGTYPE
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428
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292 sighandler (int sig)
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293 {
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294 if (audio_fd > 0)
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295 {
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296 reset_device (0);
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297 close (audio_fd);
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298 }
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299 if (sig == SIGHUP && sighup_handler)
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300 sighup_handler (sig);
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301 else if (sig == SIGINT && sigint_handler)
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302 sigint_handler (sig);
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303 else
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304 exit (1);
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305 }
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