1 #include <errno.h>
2 #include <fcntl.h>
3 #include <poll.h>
4 #include <stdio.h>
5 #include <string.h>
6 #include <stdlib.h>
7 #include <unistd.h>
8 #include <sndio.h>
9 #include "tools.h"
10
11 #define BUFSZ 0x100
12
13 void cb(void *, int);
14 void usage(void);
15
16 unsigned char buf[BUFSZ];
17 struct sio_par par;
18 char *xstr[] = SIO_XSTRINGS;
19
20 long long realpos = 0, playpos = 0;
21
22 void
cb(void * addr,int delta)23 cb(void *addr, int delta)
24 {
25 int bytes = delta * (int)(par.bps * par.pchan);
26
27 realpos += bytes;
28
29 fprintf(stderr,
30 "cb: bytes = %+7d, latency = %+7lld, "
31 "realpos = %+7lld, bufused = %+7lld\n",
32 bytes, playpos - realpos,
33 realpos, (realpos < 0) ? playpos : playpos - realpos);
34 }
35
36 void
usage(void)37 usage(void) {
38 fprintf(stderr, "usage: play [-r rate] [-c nchan] [-e enc]\n");
39 }
40
41 int
main(int argc,char ** argv)42 main(int argc, char **argv) {
43 int ch;
44 struct sio_hdl *hdl;
45 ssize_t n, len;
46
47 /*
48 * defaults parameters
49 */
50 sio_initpar(&par);
51 par.sig = 1;
52 par.bits = 16;
53 par.pchan = 2;
54 par.rate = 44100;
55
56 while ((ch = getopt(argc, argv, "r:c:e:b:x:")) != -1) {
57 switch(ch) {
58 case 'r':
59 if (sscanf(optarg, "%u", &par.rate) != 1) {
60 fprintf(stderr, "%s: bad rate\n", optarg);
61 exit(1);
62 }
63 break;
64 case 'c':
65 if (sscanf(optarg, "%u", &par.pchan) != 1) {
66 fprintf(stderr, "%s: bad channels\n", optarg);
67 exit(1);
68 }
69 break;
70 case 'e':
71 if (!sio_strtoenc(&par, optarg)) {
72 fprintf(stderr, "%s: bad encoding\n", optarg);
73 exit(1);
74 }
75 break;
76 case 'b':
77 if (sscanf(optarg, "%u", &par.appbufsz) != 1) {
78 fprintf(stderr, "%s: bad buf size\n", optarg);
79 exit(1);
80 }
81 break;
82 case 'x':
83 for (par.xrun = 0;; par.xrun++) {
84 if (par.xrun == sizeof(xstr) / sizeof(char *)) {
85 fprintf(stderr,
86 "%s: bad xrun mode\n", optarg);
87 exit(1);
88 }
89 if (strcmp(xstr[par.xrun], optarg) == 0)
90 break;
91 }
92 break;
93 default:
94 usage();
95 exit(1);
96 break;
97 }
98 }
99
100 hdl = sio_open(SIO_DEVANY, SIO_PLAY, 0);
101 if (hdl == NULL) {
102 fprintf(stderr, "sio_open() failed\n");
103 exit(1);
104 }
105 sio_onmove(hdl, cb, NULL);
106 if (!sio_setpar(hdl, &par)) {
107 fprintf(stderr, "sio_setpar() failed\n");
108 exit(1);
109 }
110 if (!sio_getpar(hdl, &par)) {
111 fprintf(stderr, "sio_getpar() failed\n");
112 exit(1);
113 }
114 if (!sio_start(hdl)) {
115 fprintf(stderr, "sio_start() failed\n");
116 exit(1);
117 }
118 fprintf(stderr, "using %u bytes per buffer, rounding to %u\n",
119 par.bufsz * par.bps * par.pchan,
120 par.round * par.bps * par.pchan);
121 for (;;) {
122 len = read(STDIN_FILENO, buf, BUFSZ);
123 if (len < 0) {
124 perror("stdin");
125 exit(1);
126 }
127 if (len == 0)
128 break;
129 n = sio_write(hdl, buf, len);
130 if (n == 0) {
131 fprintf(stderr, "sio_write: failed\n");
132 exit(1);
133 }
134 playpos += n;
135 }
136 sio_close(hdl);
137 return 0;
138 }
139