2 578f8d0c 2023-05-02 op * Copyright (c) 2022, 2023 Omar Polo <op@omarpolo.com>
4 3baa2617 2022-02-16 op * Permission to use, copy, modify, and distribute this software for any
5 3baa2617 2022-02-16 op * purpose with or without fee is hereby granted, provided that the above
6 3baa2617 2022-02-16 op * copyright notice and this permission notice appear in all copies.
8 3baa2617 2022-02-16 op * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 3baa2617 2022-02-16 op * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 3baa2617 2022-02-16 op * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 3baa2617 2022-02-16 op * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 3baa2617 2022-02-16 op * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 3baa2617 2022-02-16 op * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 3baa2617 2022-02-16 op * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 f36fd90a 2022-07-09 op #include "config.h"
19 3baa2617 2022-02-16 op #include <limits.h>
21 3baa2617 2022-02-16 op #include <assert.h>
22 3baa2617 2022-02-16 op #include <errno.h>
23 3baa2617 2022-02-16 op #include <poll.h>
24 3baa2617 2022-02-16 op #include <signal.h>
25 14be015f 2022-02-17 op #include <stdio.h>
26 3baa2617 2022-02-16 op #include <stdlib.h>
27 3baa2617 2022-02-16 op #include <stdint.h>
28 3baa2617 2022-02-16 op #include <string.h>
29 3baa2617 2022-02-16 op #include <syslog.h>
30 3baa2617 2022-02-16 op #include <unistd.h>
32 3baa2617 2022-02-16 op #include "amused.h"
33 3baa2617 2022-02-16 op #include "log.h"
34 3baa2617 2022-02-16 op #include "xmalloc.h"
36 c0180200 2022-06-10 op struct pollfd *player_pfds;
37 b02dadd3 2023-05-13 op int player_nfds;
38 50e0da0e 2024-01-21 op static struct imsgbuf *imsgbuf;
40 3baa2617 2022-02-16 op static int nextfd = -1;
41 ff06024f 2022-07-08 op static int64_t samples;
42 60a09ce7 2022-07-09 op static int64_t duration;
43 06ceb376 2023-03-23 op static unsigned int current_rate;
45 3baa2617 2022-02-16 op volatile sig_atomic_t halted;
48 3baa2617 2022-02-16 op player_signal_handler(int signo)
54 b9d2a697 2022-07-08 op player_setup(unsigned int bits, unsigned int rate, unsigned int channels)
56 069e653b 2023-03-23 op log_debug("%s: bits=%u, rate=%u, channels=%u", __func__,
57 a728254f 2022-02-23 op bits, rate, channels);
59 06ceb376 2023-03-23 op current_rate = rate;
60 b02dadd3 2023-05-13 op return audio_setup(bits, rate, channels, player_pfds + 1, player_nfds);
64 60a09ce7 2022-07-09 op player_setduration(int64_t d)
66 ff06024f 2022-07-08 op int64_t seconds;
69 06ceb376 2023-03-23 op seconds = duration / current_rate;
70 50e0da0e 2024-01-21 op imsg_compose(imsgbuf, IMSG_LEN, 0, 0, -1, &seconds, sizeof(seconds));
71 50e0da0e 2024-01-21 op imsg_flush(imsgbuf);
75 ff06024f 2022-07-08 op player_onmove(void *arg, int delta)
77 ff06024f 2022-07-08 op static int64_t reported;
80 ff06024f 2022-07-08 op samples += delta;
81 06ceb376 2023-03-23 op if (llabs(samples - reported) >= current_rate) {
82 ff06024f 2022-07-08 op reported = samples;
83 06ceb376 2023-03-23 op sec = samples / current_rate;
85 50e0da0e 2024-01-21 op imsg_compose(imsgbuf, IMSG_POS, 0, 0, -1, &sec, sizeof(sec));
86 50e0da0e 2024-01-21 op imsg_flush(imsgbuf);
91 791d3db3 2022-07-09 op player_setpos(int64_t pos)
93 791d3db3 2022-07-09 op samples = pos;
94 791d3db3 2022-07-09 op player_onmove(NULL, 0);
97 3baa2617 2022-02-16 op /* process only one message */
99 c2f554ff 2022-07-09 op player_dispatch(int64_t *s, int wait)
101 791d3db3 2022-07-09 op struct player_seek seek;
102 fc4a38af 2022-05-19 op struct pollfd pfd;
103 3baa2617 2022-02-16 op struct imsg imsg;
107 3baa2617 2022-02-16 op if (halted != 0)
108 3baa2617 2022-02-16 op return IMSG_STOP;
111 50e0da0e 2024-01-21 op if ((n = imsg_get(imsgbuf, &imsg)) == -1)
112 3baa2617 2022-02-16 op fatal("imsg_get");
113 926ee836 2022-05-19 op if (n == 0) {
117 50e0da0e 2024-01-21 op pfd.fd = imsgbuf->fd;
118 926ee836 2022-05-19 op pfd.events = POLLIN;
119 926ee836 2022-05-19 op if (poll(&pfd, 1, INFTIM) == -1)
120 926ee836 2022-05-19 op fatal("poll");
121 50e0da0e 2024-01-21 op if ((n = imsg_read(imsgbuf)) == -1 && errno != EAGAIN)
122 926ee836 2022-05-19 op fatal("imsg_read");
124 926ee836 2022-05-19 op fatalx("pipe closed");
128 ddaffed6 2024-01-21 op ret = imsg_get_type(&imsg);
129 ddaffed6 2024-01-21 op switch (ret) {
130 3baa2617 2022-02-16 op case IMSG_PLAY:
131 6e4f8947 2022-06-09 op if (nextfd != -1)
132 6e4f8947 2022-06-09 op fatalx("track already enqueued");
133 5c974144 2024-01-21 op if ((nextfd = imsg_get_fd(&imsg)) == -1)
134 6e4f8947 2022-06-09 op fatalx("%s: got invalid file descriptor", __func__);
135 6e4f8947 2022-06-09 op log_debug("song enqueued");
136 3baa2617 2022-02-16 op ret = IMSG_STOP;
138 3baa2617 2022-02-16 op case IMSG_RESUME:
139 3baa2617 2022-02-16 op case IMSG_PAUSE:
140 3baa2617 2022-02-16 op case IMSG_STOP:
142 791d3db3 2022-07-09 op case IMSG_CTL_SEEK:
143 791d3db3 2022-07-09 op if (s == NULL)
145 9307af9e 2024-01-21 op if (imsg_get_data(&imsg, &seek, sizeof(seek)) == -1)
146 791d3db3 2022-07-09 op fatalx("wrong size for seek ctl");
147 17726cb8 2023-07-13 op if (seek.percent)
148 60a09ce7 2022-07-09 op *s = (double)seek.offset * (double)duration / 100.0;
150 06ceb376 2023-03-23 op *s = seek.offset * current_rate;
151 17726cb8 2023-07-13 op if (seek.relative)
152 17726cb8 2023-07-13 op *s += samples;
157 ddaffed6 2024-01-21 op fatalx("unknown imsg %d", ret);
160 fd90976c 2022-06-09 op imsg_free(&imsg);
165 17ef54d6 2022-06-22 op player_senderr(const char *errstr)
167 17ef54d6 2022-06-22 op size_t len = 0;
169 17ef54d6 2022-06-22 op if (errstr != NULL)
170 17ef54d6 2022-06-22 op len = strlen(errstr) + 1;
172 50e0da0e 2024-01-21 op imsg_compose(imsgbuf, IMSG_ERR, 0, 0, -1, errstr, len);
173 50e0da0e 2024-01-21 op imsg_flush(imsgbuf);
177 3baa2617 2022-02-16 op player_sendeof(void)
179 50e0da0e 2024-01-21 op imsg_compose(imsgbuf, IMSG_EOF, 0, 0, -1, NULL, 0);
180 50e0da0e 2024-01-21 op imsg_flush(imsgbuf);
184 17ef54d6 2022-06-22 op player_playnext(const char **errstr)
186 bf19b03e 2022-05-09 op static char buf[512];
188 3baa2617 2022-02-16 op int fd = nextfd;
190 3baa2617 2022-02-16 op assert(nextfd != -1);
193 ff06024f 2022-07-08 op /* reset samples and set position to zero */
195 50e0da0e 2024-01-21 op imsg_compose(imsgbuf, IMSG_POS, 0, 0, -1, &samples, sizeof(samples));
196 50e0da0e 2024-01-21 op imsg_flush(imsgbuf);
198 bf19b03e 2022-05-09 op r = read(fd, buf, sizeof(buf));
200 bf19b03e 2022-05-09 op /* 8 byte is the larger magic number */
202 17ef54d6 2022-06-22 op *errstr = "read failed";
206 bf19b03e 2022-05-09 op if (lseek(fd, 0, SEEK_SET) == -1) {
207 17ef54d6 2022-06-22 op *errstr = "lseek failed";
211 bf19b03e 2022-05-09 op if (memcmp(buf, "fLaC", 4) == 0)
212 17ef54d6 2022-06-22 op return play_flac(fd, errstr);
213 bf19b03e 2022-05-09 op if (memcmp(buf, "ID3", 3) == 0 ||
214 bf19b03e 2022-05-09 op memcmp(buf, "\xFF\xFB", 2) == 0)
215 17ef54d6 2022-06-22 op return play_mp3(fd, errstr);
216 bf19b03e 2022-05-09 op if (memmem(buf, r, "OpusHead", 8) != NULL)
217 17ef54d6 2022-06-22 op return play_opus(fd, errstr);
218 bf19b03e 2022-05-09 op if (memmem(buf, r, "OggS", 4) != NULL)
219 17ef54d6 2022-06-22 op return play_oggvorbis(fd, errstr);
221 17ef54d6 2022-06-22 op *errstr = "unknown file type";
228 791d3db3 2022-07-09 op player_pause(int64_t *s)
232 c2f554ff 2022-07-09 op r = player_dispatch(s, 1);
233 3ad8bae8 2022-07-09 op return r == IMSG_RESUME || r == IMSG_CTL_SEEK;
237 c2f554ff 2022-07-09 op player_shouldstop(int64_t *s, int wait)
239 c2f554ff 2022-07-09 op switch (player_dispatch(s, wait)) {
240 3baa2617 2022-02-16 op case IMSG_PAUSE:
241 791d3db3 2022-07-09 op if (player_pause(s))
243 3baa2617 2022-02-16 op /* fallthrough */
244 3baa2617 2022-02-16 op case IMSG_STOP:
252 791d3db3 2022-07-09 op play(const void *buf, size_t len, int64_t *s)
255 b02dadd3 2023-05-13 op int revents, r, wait;
258 c0180200 2022-06-10 op while (len != 0) {
259 b02dadd3 2023-05-13 op audio_pollfd(player_pfds + 1, player_nfds, POLLOUT);
260 b02dadd3 2023-05-13 op r = poll(player_pfds, player_nfds + 1, INFTIM);
262 c0180200 2022-06-10 op fatal("poll");
264 c2f554ff 2022-07-09 op wait = player_pfds[0].revents & (POLLHUP|POLLIN);
265 c2f554ff 2022-07-09 op if (player_shouldstop(s, wait)) {
266 06ceb376 2023-03-23 op audio_flush();
270 b02dadd3 2023-05-13 op revents = audio_revents(player_pfds + 1, player_nfds);
271 bc946090 2023-02-26 op if (revents & POLLHUP) {
272 bc946090 2023-02-26 op if (errno == EAGAIN)
274 06ceb376 2023-03-23 op fatal("audio hang-up");
276 c0180200 2022-06-10 op if (revents & POLLOUT) {
277 06ceb376 2023-03-23 op w = audio_write(buf, len);
287 3baa2617 2022-02-16 op player(int debug, int verbose)
291 3baa2617 2022-02-16 op log_init(debug, LOG_DAEMON);
292 3baa2617 2022-02-16 op log_setverbose(verbose);
294 3baa2617 2022-02-16 op setproctitle("player");
295 3baa2617 2022-02-16 op log_procinit("player");
299 3baa2617 2022-02-16 op static int attached;
301 3baa2617 2022-02-16 op while (!attached)
306 06ceb376 2023-03-23 op if (audio_open(player_onmove) == -1)
307 06ceb376 2023-03-23 op fatal("audio_open");
309 b02dadd3 2023-05-13 op if ((player_nfds = audio_nfds()) <= 0)
310 b02dadd3 2023-05-13 op fatal("audio_nfds: invalid number of file descriptors: %d",
311 b02dadd3 2023-05-13 op player_nfds);
313 c0180200 2022-06-10 op /* allocate one extra for imsg */
314 b02dadd3 2023-05-13 op player_pfds = calloc(player_nfds + 1, sizeof(*player_pfds));
315 c0180200 2022-06-10 op if (player_pfds == NULL)
316 c0180200 2022-06-10 op fatal("calloc");
318 c0180200 2022-06-10 op player_pfds[0].events = POLLIN;
319 c0180200 2022-06-10 op player_pfds[0].fd = 3;
321 50e0da0e 2024-01-21 op imsgbuf = xmalloc(sizeof(*imsgbuf));
322 50e0da0e 2024-01-21 op imsg_init(imsgbuf, 3);
324 3baa2617 2022-02-16 op signal(SIGINT, player_signal_handler);
325 3baa2617 2022-02-16 op signal(SIGTERM, player_signal_handler);
327 3baa2617 2022-02-16 op signal(SIGHUP, SIG_IGN);
328 3baa2617 2022-02-16 op signal(SIGPIPE, SIG_IGN);
330 251e00ff 2022-03-10 op if (pledge("stdio recvfd audio", NULL) == -1)
331 3baa2617 2022-02-16 op fatal("pledge");
333 3baa2617 2022-02-16 op while (!halted) {
334 17ef54d6 2022-06-22 op const char *errstr = NULL;
336 3baa2617 2022-02-16 op while (nextfd == -1)
337 c2f554ff 2022-07-09 op player_dispatch(NULL, 1);
339 17ef54d6 2022-06-22 op r = player_playnext(&errstr);
341 17ef54d6 2022-06-22 op player_senderr(errstr);
343 06412529 2022-05-09 op player_sendeof();