1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
implement WmPlay;
include "sys.m";
sys: Sys;
include "draw.m";
draw: Draw;
Context: import draw;
gctxt: ref Context;
include "tk.m";
tk: Tk;
include "tkclient.m";
tkclient: Tkclient;
include "dialog.m";
dialog: Dialog;
include "selectfile.m";
selectfile: Selectfile;
tpid: int;
ppid: int;
Magic: con "rate";
data: con "/dev/audio";
ctl: con "/dev/audioctl";
buffz: con Sys->ATOMICIO;
top: ref Tk->Toplevel;
WmPlay: module
{
init: fn(ctxt: ref Context, argv: list of string);
};
notecmd := array[] of {
"frame .f",
"label .f.l -bitmap error -foreground red",
"button .b -text Continue -command {send cmd done}",
"focus .f",
"bind .f <Key-\n> {send cmd done}",
"pack .f.l .f.m -side left -expand 1 -padx 10 -pady 10",
"pack .f .b -padx 10 -pady 10",
"update; cursor -default"
};
notice(message: string)
{
dialog->prompt(gctxt, top.image, "error -fg red", "Error", message, 0, "OK"::nil);
}
play(f: string)
{
ppid = sys->pctl(0, nil);
buff := array[buffz] of byte;
inf := sys->open(f, Sys->OREAD);
if (inf == nil) {
notice(sys->sprint("could not open %s: %r", f));
return;
}
n := sys->read(inf, buff, buffz);
if (n < 0) {
notice(sys->sprint("could not read %s: %r", f));
return;
}
if (n < 10 || string buff[0:4] != Magic) {
notice(sys->sprint("%s: not an audio file", f));
return;
}
i := 0;
for (;;) {
if (i == n) {
notice(sys->sprint("%s: bad header", f));
return;
}
if (buff[i] == byte '\n') {
i++;
if (i == n) {
notice(sys->sprint("%s: bad header", f));
return;
}
if (buff[i] == byte '\n') {
i++;
if ((i % 4) != 0) {
notice(sys->sprint("%s: unpadded header", f));
return;
}
break;
}
}
else
i++;
}
df := sys->open(data, Sys->OWRITE);
if (df == nil) {
notice(sys->sprint("could not open %s: %r", data));
return;
}
cf := sys->open(ctl, Sys->OWRITE);
if (cf == nil) {
notice(sys->sprint("could not open %s: %r", ctl));
return;
}
if (sys->write(cf, buff, i - 1) < 0) {
notice(sys->sprint("could not write %s: %r", ctl));
return;
}
if (n > i && sys->write(df, buff[i:n], n - i) < 0) {
notice(sys->sprint("could not write %s: %r", data));
return;
}
if (sys->stream(inf, df, Sys->ATOMICIO) < 0) {
notice(sys->sprint("could not stream %s: %r", data));
return;
}
}
doplay(f: string)
{
play(f);
kill(tpid);
}
init(ctxt: ref Context, argv: list of string)
{
sys = load Sys Sys->PATH;
if (ctxt == nil) {
sys->fprint(sys->fildes(2), "wmplay: no window context\n");
raise "fail:bad context";
}
draw = load Draw Draw->PATH;
tk = load Tk Tk->PATH;
tkclient = load Tkclient Tkclient->PATH;
dialog = load Dialog Dialog->PATH;
selectfile = load Selectfile Selectfile->PATH;
gctxt = ctxt;
sys->pctl(Sys->NEWPGRP, nil);
tkclient->init();
dialog->init();
selectfile->init();
file: string;
argv = tl argv;
if (argv != nil)
file = hd argv;
else {
file = selectfile->filename(ctxt, nil, "Locate Audio File", "*.iaf"::"*.wav"::nil, "");
if (file == "")
exit;
}
(t, menubut) := tkclient->toplevel(ctxt, "-borderwidth 2 -relief raised", "Play", 0);
tk->cmd(t, "label .d -label {" + file + "}");
tk->cmd(t, "pack .Wm_t -fill x; pack .d; pack propagate . 0");
tk->cmd(t, "update");
top = t;
tpid = sys->pctl(0, nil);
spawn doplay(file);
for(;;) {
menu := <- menubut;
if(menu == "exit") {
kill(ppid);
return;
}
tkclient->wmctl(t, menu);
}
}
kill(pid: int)
{
fd := sys->open("/prog/" + string pid + "/ctl", sys->OWRITE);
if (fd != nil)
sys->fprint(fd, "kill");
}
|
