/*
* This file is part of DisOrder.
- * Copyright (C) 2007, 2008 Richard Kettlewell
+ * Copyright (C) 2007-2009, 2011, 2013 Richard Kettlewell
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* systems. There is no support for Microsoft Windows yet, and that will in
* fact probably an entirely separate program.
*
- * The program runs (at least) three threads. listen_thread() is responsible
- * for reading RTP packets off the wire and adding them to the linked list @ref
- * received_packets, assuming they are basically sound. queue_thread() takes
- * packets off this linked list and adds them to @ref packets (an operation
- * which might be much slower due to contention for @ref lock).
+ * The program runs (at least) three threads:
*
- * The main thread is responsible for actually playing audio. In ALSA this
- * means it waits until ALSA says it's ready for more audio which it then
- * plays. See @ref clients/playrtp-alsa.c.
+ * listen_thread() is responsible for reading RTP packets off the wire and
+ * adding them to the linked list @ref received_packets, assuming they are
+ * basically sound.
*
- * In Core Audio the main thread is only responsible for starting and stopping
- * play: the system does the actual playback in its own private thread, and
- * calls adioproc() to fetch the audio data. See @ref
- * clients/playrtp-coreaudio.c.
+ * queue_thread() takes packets off this linked list and adds them to @ref
+ * packets (an operation which might be much slower due to contention for @ref
+ * lock).
+ *
+ * control_thread() accepts commands from Disobedience (or anything else).
+ *
+ * The main thread activates and deactivates audio playing via the @ref
+ * lib/uaudio.h API (which probably implies at least one further thread).
*
* Sometimes it happens that there is no audio available to play. This may
* because the server went away, or a packet was dropped, or the server
#include <unistd.h>
#include <sys/mman.h>
#include <fcntl.h>
+#include <math.h>
+#include <arpa/inet.h>
+#include <ifaddrs.h>
+#include <net/if.h>
#include "log.h"
#include "mem.h"
#include "configuration.h"
#include "addr.h"
#include "syscalls.h"
+#include "printf.h"
#include "rtp.h"
#include "defs.h"
#include "vector.h"
#include "version.h"
#include "uaudio.h"
-#define readahead linux_headers_are_borked
-
/** @brief Obsolete synonym */
#ifndef IPV6_JOIN_GROUP
# define IPV6_JOIN_GROUP IPV6_ADD_MEMBERSHIP
/** @brief Output device */
-/** @brief Minimum low watermark
- *
- * We'll stop playing if there's only this many samples in the buffer. */
-unsigned minbuffer = 2 * 44100 / 10; /* 0.2 seconds */
+/** @brief Buffer low watermark in samples */
+unsigned minbuffer;
-/** @brief Buffer high watermark
+/** @brief Maximum buffer size in samples
*
- * We'll only start playing when this many samples are available. */
-static unsigned readahead = 44100; /* 0.5 seconds */
-
-/** @brief Maximum buffer size
- *
- * We'll stop reading from the network if we have this many samples. */
+ * We'll stop reading from the network if we have this many samples.
+ */
static unsigned maxbuffer;
/** @brief Received packets
{ "device", required_argument, 0, 'D' },
{ "min", required_argument, 0, 'm' },
{ "max", required_argument, 0, 'x' },
- { "buffer", required_argument, 0, 'b' },
{ "rcvbuf", required_argument, 0, 'R' },
#if HAVE_SYS_SOUNDCARD_H || EMPEG_HOST
{ "oss", no_argument, 0, 'o' },
#if HAVE_COREAUDIO_AUDIOHARDWARE_H
{ "core-audio", no_argument, 0, 'c' },
#endif
+ { "api", required_argument, 0, 'A' },
{ "dump", required_argument, 0, 'r' },
{ "command", required_argument, 0, 'e' },
+ { "pause-mode", required_argument, 0, 'P' },
{ "socket", required_argument, 0, 's' },
{ "config", required_argument, 0, 'C' },
+ { "user-config", required_argument, 0, 'u' },
+ { "monitor", no_argument, 0, 'M' },
{ 0, 0, 0, 0 }
};
char *line;
socklen_t salen;
FILE *fp;
+ int vl, vr;
assert(control_socket);
unlink(control_socket);
strcpy(sa.sun_path, control_socket);
sfd = xsocket(PF_UNIX, SOCK_STREAM, 0);
if(bind(sfd, (const struct sockaddr *)&sa, sizeof sa) < 0)
- fatal(errno, "error binding to %s", control_socket);
+ disorder_fatal(errno, "error binding to %s", control_socket);
if(listen(sfd, 128) < 0)
- fatal(errno, "error calling listen on %s", control_socket);
- info("listening on %s", control_socket);
+ disorder_fatal(errno, "error calling listen on %s", control_socket);
+ disorder_info("listening on %s", control_socket);
for(;;) {
salen = sizeof sa;
cfd = accept(sfd, (struct sockaddr *)&sa, &salen);
case EAGAIN:
break;
default:
- fatal(errno, "error calling accept on %s", control_socket);
+ disorder_fatal(errno, "error calling accept on %s", control_socket);
}
}
if(!(fp = fdopen(cfd, "r+"))) {
- error(errno, "error calling fdopen for %s connection", control_socket);
+ disorder_error(errno, "error calling fdopen for %s connection", control_socket);
close(cfd);
continue;
}
if(!inputline(control_socket, fp, &line, '\n')) {
if(!strcmp(line, "stop")) {
- info("stopped via %s", control_socket);
+ disorder_info("stopped via %s", control_socket);
exit(0); /* terminate immediately */
- }
- if(!strcmp(line, "query"))
+ } else if(!strcmp(line, "query"))
fprintf(fp, "running");
+ else if(!strcmp(line, "getvol")) {
+ if(backend->get_volume) backend->get_volume(&vl, &vr);
+ else vl = vr = 0;
+ fprintf(fp, "%d %d\n", vl, vr);
+ } else if(!strncmp(line, "setvol ", 7)) {
+ if(!backend->set_volume)
+ vl = vr = 0;
+ else if(sscanf(line + 7, "%d %d", &vl, &vr) == 2)
+ backend->set_volume(&vl, &vr);
+ else
+ backend->get_volume(&vl, &vr);
+ fprintf(fp, "%d %d\n", vl, vr);
+ }
xfree(line);
}
if(fclose(fp) < 0)
- error(errno, "error closing %s connection", control_socket);
+ disorder_error(errno, "error closing %s connection", control_socket);
}
}
pthread_cond_broadcast(&cond);
pthread_mutex_unlock(&lock);
}
+#if HAVE_STUPID_GCC44
+ return NULL;
+#endif
}
/** @brief Background thread collecting samples
case EINTR:
continue;
default:
- fatal(errno, "error reading from socket");
+ disorder_fatal(errno, "error reading from socket");
}
}
/* Ignore too-short packets */
if((size_t)n <= sizeof (struct rtp_header)) {
- info("ignored a short packet");
+ disorder_info("ignored a short packet");
continue;
}
timestamp = htonl(header.timestamp);
seq = htons(header.seq);
/* Ignore packets in the past */
if(active && lt(timestamp, next_timestamp)) {
- info("dropping old packet, timestamp=%"PRIx32" < %"PRIx32,
+ disorder_info("dropping old packet, timestamp=%"PRIx32" < %"PRIx32,
timestamp, next_timestamp);
continue;
}
break;
/* TODO support other RFC3551 media types (when the speaker does) */
default:
- fatal(0, "unsupported RTP payload type %d",
- header.mpt & 0x7F);
+ disorder_fatal(0, "unsupported RTP payload type %d", header.mpt & 0x7F);
}
+ /* See if packet is silent */
+ const uint16_t *s = p->samples_raw;
+ n = p->nsamples;
+ for(; n > 0; --n)
+ if(*s++)
+ break;
+ if(!n)
+ p->flags |= SILENT;
if(logfp)
fprintf(logfp, "sequence %u timestamp %"PRIx32" length %"PRIx32" end %"PRIx32"\n",
seq, timestamp, p->nsamples, timestamp + p->nsamples);
* Must be called with @ref lock held.
*/
void playrtp_fill_buffer(void) {
- while(nsamples)
+ /* Discard current buffer contents */
+ while(nsamples) {
+ //fprintf(stderr, "%8u/%u (%u) DROPPING\n", nsamples, maxbuffer, minbuffer);
drop_first_packet();
- info("Buffering...");
- while(nsamples < readahead) {
+ }
+ disorder_info("Buffering...");
+ /* Wait until there's at least minbuffer samples available */
+ while(nsamples < minbuffer) {
+ //fprintf(stderr, "%8u/%u (%u) FILLING\n", nsamples, maxbuffer, minbuffer);
pthread_cond_wait(&cond, &lock);
}
+ /* Start from whatever is earliest */
next_timestamp = pheap_first(&packets)->timestamp;
active = 1;
}
}
/* display usage message and terminate */
-static void help(void) {
+static void attribute((noreturn)) help(void) {
xprintf("Usage:\n"
" disorder-playrtp [OPTIONS] [[ADDRESS] PORT]\n"
"Options:\n"
" --device, -D DEVICE Output device\n"
" --min, -m FRAMES Buffer low water mark\n"
- " --buffer, -b FRAMES Buffer high water mark\n"
" --max, -x FRAMES Buffer maximum size\n"
" --rcvbuf, -R BYTES Socket receive buffer size\n"
- " --config, -C PATH Set configuration file\n"
-#if HAVE_ALSA_ASOUNDLIB_H
- " --alsa, -a Use ALSA to play audio\n"
-#endif
-#if HAVE_SYS_SOUNDCARD_H || EMPEG_HOST
- " --oss, -o Use OSS to play audio\n"
-#endif
-#if HAVE_COREAUDIO_AUDIOHARDWARE_H
- " --core-audio, -c Use Core Audio to play audio\n"
-#endif
- " --command, -e COMMAND Pipe audio to command\n"
+ " --config, -C PATH Set system configuration file\n"
+ " --user-config, -u PATH Set user configuration file\n"
+ " --api, -A API Select audio API. Possibilities:\n"
+ " ");
+ int first = 1;
+ for(int n = 0; uaudio_apis[n]; ++n) {
+ if(uaudio_apis[n]->flags & UAUDIO_API_CLIENT) {
+ if(first)
+ first = 0;
+ else
+ xprintf(", ");
+ xprintf("%s", uaudio_apis[n]->name);
+ }
+ }
+ xprintf("\n"
+ " --command, -e COMMAND Pipe audio to command.\n"
+ " --pause-mode, -P silence For -e: pauses send silence (default)\n"
+ " --pause-mode, -P suspend For -e: pauses suspend writes\n"
" --help, -h Display usage message\n"
" --version, -V Display version number\n"
);
size_t max_samples,
void attribute((unused)) *userdata) {
size_t samples;
+ int silent = 0;
pthread_mutex_lock(&lock);
/* Get the next packet, junking any that are now in the past */
*bufptr++ = (int16_t)ntohs(*ptr++);
--i;
}
- /* We don't junk the packet here; a subsequent call to
- * playrtp_next_packet() will dispose of it (if it's actually done with). */
+ silent = !!(p->flags & SILENT);
} else {
/* There is no suitable packet. We introduce 0s up to the next packet, or
* to fill the buffer if there's no next packet or that's too many. The
samples = max_samples;
//info("infill by %zu", samples);
memset(buffer, 0, samples * uaudio_sample_size);
+ silent = 1;
}
/* Debug dump */
if(dump_buffer) {
}
/* Advance timestamp */
next_timestamp += samples;
+ /* If we're getting behind then try to drop just silent packets
+ *
+ * In theory this shouldn't be necessary. The server is supposed to send
+ * packets at the right rate and compares the number of samples sent with the
+ * time in order to ensure this.
+ *
+ * However, various things could throw this off:
+ *
+ * - the server's clock could advance at the wrong rate. This would cause it
+ * to mis-estimate the right number of samples to have sent and
+ * inappropriately throttle or speed up.
+ *
+ * - playback could happen at the wrong rate. If the playback host's sound
+ * card has a slightly incorrect clock then eventually it will get out
+ * of step.
+ *
+ * So if we play back slightly slower than the server sends for either of
+ * these reasons then eventually our buffer, and the socket's buffer, will
+ * fill, and the kernel will start dropping packets. The result is audible
+ * and not very nice.
+ *
+ * Therefore if we're getting behind, we pre-emptively drop silent packets,
+ * since a change in the duration of a silence is less noticeable than a
+ * dropped packet from the middle of continuous music.
+ *
+ * (If things go wrong the other way then eventually we run out of packets to
+ * play and are forced to play silence. This doesn't seem to happen in
+ * practice but if it does then in the same way we can artificially extend
+ * silent packets to compensate.)
+ *
+ * Dropped packets are always logged; use 'disorder-playrtp --monitor' to
+ * track how close to target buffer occupancy we are on a once-a-minute
+ * basis.
+ */
+ if(nsamples > minbuffer && silent) {
+ disorder_info("dropping %zu samples (%"PRIu32" > %"PRIu32")",
+ samples, nsamples, minbuffer);
+ samples = 0;
+ }
+ /* Junk obsolete packets */
+ playrtp_next_packet();
pthread_mutex_unlock(&lock);
return samples;
}
struct addrinfo *res;
struct stringlist sl;
char *sockname;
- int rcvbuf, target_rcvbuf = 131072;
+ int rcvbuf, target_rcvbuf = -1;
socklen_t len;
struct ip_mreq mreq;
struct ipv6_mreq mreq6;
- disorder_client *c;
+ disorder_client *c = NULL;
char *address, *port;
int is_multicast;
union any_sockaddr {
union any_sockaddr mgroup;
const char *dumpfile = 0;
pthread_t ltid;
+ int monitor = 0;
+ static const int one = 1;
- static const struct addrinfo prefs = {
+ struct addrinfo prefs = {
.ai_flags = AI_PASSIVE,
.ai_family = PF_INET,
.ai_socktype = SOCK_DGRAM,
.ai_protocol = IPPROTO_UDP
};
+ /* Timing information is often important to debugging playrtp, so we include
+ * timestamps in the logs */
+ logdate = 1;
mem_init();
- if(!setlocale(LC_CTYPE, "")) fatal(errno, "error calling setlocale");
- backend = uaudio_apis[0];
- while((n = getopt_long(argc, argv, "hVdD:m:b:x:L:R:M:aocC:re:", options, 0)) >= 0) {
+ if(!setlocale(LC_CTYPE, "")) disorder_fatal(errno, "error calling setlocale");
+ while((n = getopt_long(argc, argv, "hVdD:m:x:L:R:aocC:u:re:P:MA:", options, 0)) >= 0) {
switch(n) {
case 'h': help();
case 'V': version("disorder-playrtp");
case 'd': debugging = 1; break;
case 'D': uaudio_set("device", optarg); break;
case 'm': minbuffer = 2 * atol(optarg); break;
- case 'b': readahead = 2 * atol(optarg); break;
case 'x': maxbuffer = 2 * atol(optarg); break;
case 'L': logfp = fopen(optarg, "w"); break;
case 'R': target_rcvbuf = atoi(optarg); break;
#if HAVE_ALSA_ASOUNDLIB_H
- case 'a': backend = &uaudio_alsa; break;
+ case 'a':
+ disorder_error(0, "deprecated option; use --api alsa instead");
+ backend = &uaudio_alsa; break;
#endif
#if HAVE_SYS_SOUNDCARD_H || EMPEG_HOST
- case 'o': backend = &uaudio_oss; break;
+ case 'o':
+ disorder_error(0, "deprecated option; use --api oss instead");
+ backend = &uaudio_oss;
+ break;
#endif
#if HAVE_COREAUDIO_AUDIOHARDWARE_H
- case 'c': backend = &uaudio_coreaudio; break;
+ case 'c':
+ disorder_error(0, "deprecated option; use --api coreaudio instead");
+ backend = &uaudio_coreaudio;
+ break;
#endif
+ case 'A': backend = uaudio_find(optarg); break;
case 'C': configfile = optarg; break;
+ case 'u': userconfigfile = optarg; break;
case 's': control_socket = optarg; break;
case 'r': dumpfile = optarg; break;
case 'e': backend = &uaudio_command; uaudio_set("command", optarg); break;
- default: fatal(0, "invalid option");
+ case 'P': uaudio_set("pause-mode", optarg); break;
+ case 'M': monitor = 1; break;
+ default: disorder_fatal(0, "invalid option");
}
}
- if(config_read(0)) fatal(0, "cannot read configuration");
- if(!maxbuffer)
- maxbuffer = 4 * readahead;
+ if(config_read(0, NULL)) disorder_fatal(0, "cannot read configuration");
+ /* Choose a sensible default audio backend */
+ if(!backend) {
+ backend = uaudio_default(uaudio_apis, UAUDIO_API_CLIENT);
+ if(!backend)
+ disorder_fatal(0, "no default uaudio API found");
+ disorder_info("default audio API %s", backend->name);
+ }
+ if(backend == &uaudio_rtp) {
+ /* This means that you have NO local sound output. This can happen if you
+ * use a non-Apple GCC on a Mac (because it doesn't know how to compile
+ * CoreAudio/AudioHardware.h). */
+ disorder_fatal(0, "cannot play RTP through RTP");
+ }
+ /* Set buffering parameters if not overridden */
+ if(!minbuffer) {
+ minbuffer = config->rtp_minbuffer;
+ if(!minbuffer) minbuffer = (2*44100)*4/10;
+ }
+ if(!maxbuffer) {
+ maxbuffer = config->rtp_maxbuffer;
+ if(!maxbuffer) maxbuffer = 2 * minbuffer;
+ }
+ if(target_rcvbuf < 0) target_rcvbuf = config->rtp_rcvbuf;
argc -= optind;
argv += optind;
switch(argc) {
case 0:
- /* Get configuration from server */
- if(!(c = disorder_new(1))) exit(EXIT_FAILURE);
- if(disorder_connect(c)) exit(EXIT_FAILURE);
- if(disorder_rtp_address(c, &address, &port)) exit(EXIT_FAILURE);
- sl.n = 2;
- sl.s = xcalloc(2, sizeof *sl.s);
- sl.s[0] = address;
- sl.s[1] = port;
+ sl.s = xcalloc(3, sizeof *sl.s);
+ if(config->rtp_always_request) {
+ sl.s[0] = sl.s[1] = (/*unconst*/ char *)"-";
+ sl.n = 2;
+ } else {
+ /* Get configuration from server */
+ if(!(c = disorder_new(1))) exit(EXIT_FAILURE);
+ if(disorder_connect(c)) exit(EXIT_FAILURE);
+ if(disorder_rtp_address(c, &address, &port)) exit(EXIT_FAILURE);
+ sl.s[0] = address;
+ sl.s[1] = port;
+ sl.n = 2;
+ }
+ /* If we're requesting a new stream then apply the local network address
+ * overrides.
+ */
+ if(!strcmp(sl.s[0], "-")) {
+ if(config->rtp_request_address.port)
+ byte_xasprintf(&sl.s[1], "%d", config->rtp_request_address.port);
+ if(config->rtp_request_address.address) {
+ sl.s[2] = sl.s[1];
+ sl.s[1] = config->rtp_request_address.address;
+ sl.n = 3;
+ }
+ }
break;
- case 1:
- case 2:
+ case 1: case 2: case 3:
/* Use command-line ADDRESS+PORT or just PORT */
sl.n = argc;
sl.s = argv;
break;
default:
- fatal(0, "usage: disorder-playrtp [OPTIONS] [[ADDRESS] PORT]");
+ disorder_fatal(0, "usage: disorder-playrtp [OPTIONS] [[ADDRESS] PORT]");
}
- /* Look up address and port */
- if(!(res = get_address(&sl, &prefs, &sockname)))
- exit(1);
- /* Create the socket */
- if((rtpfd = socket(res->ai_family,
- res->ai_socktype,
- res->ai_protocol)) < 0)
- fatal(errno, "error creating socket");
- /* Stash the multicast group address */
- if((is_multicast = multicast(res->ai_addr))) {
- memcpy(&mgroup, res->ai_addr, res->ai_addrlen);
- switch(res->ai_addr->sa_family) {
- case AF_INET:
- mgroup.in.sin_port = 0;
- break;
- case AF_INET6:
- mgroup.in6.sin6_port = 0;
- break;
+ disorder_info("version "VERSION" process ID %lu",
+ (unsigned long)getpid());
+ struct sockaddr *addr;
+ socklen_t addr_len;
+ if(!strcmp(sl.s[0], "-")) {
+ /* Syntax: - [[ADDRESS] PORT]. Here, the PORT may be `-' to get the local
+ * kernel to choose. The ADDRESS may be omitted or `-' to pick something
+ * suitable. */
+ const char *node, *svc;
+ struct sockaddr *sa = 0;
+ switch (sl.n) {
+#define NULLDASH(s) (strcmp((s), "-") ? (s) : 0)
+ case 1: node = 0; svc = 0; break;
+ case 2: node = 0; svc = NULLDASH(sl.s[1]); break;
+ case 3: node = NULLDASH(sl.s[1]); svc = NULLDASH(sl.s[2]); break;
+ default: disorder_fatal(0, "too many listening-address compoennts");
+#undef NULLDASH
}
- }
- /* Bind to 0/port */
- switch(res->ai_addr->sa_family) {
- case AF_INET:
- memset(&((struct sockaddr_in *)res->ai_addr)->sin_addr, 0,
- sizeof (struct in_addr));
- break;
- case AF_INET6:
- memset(&((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 0,
- sizeof (struct in6_addr));
- break;
- default:
- fatal(0, "unsupported family %d", (int)res->ai_addr->sa_family);
- }
- if(bind(rtpfd, res->ai_addr, res->ai_addrlen) < 0)
- fatal(errno, "error binding socket to %s", sockname);
- if(is_multicast) {
- switch(mgroup.sa.sa_family) {
- case PF_INET:
- mreq.imr_multiaddr = mgroup.in.sin_addr;
- mreq.imr_interface.s_addr = 0; /* use primary interface */
- if(setsockopt(rtpfd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
- &mreq, sizeof mreq) < 0)
- fatal(errno, "error calling setsockopt IP_ADD_MEMBERSHIP");
- break;
- case PF_INET6:
- mreq6.ipv6mr_multiaddr = mgroup.in6.sin6_addr;
- memset(&mreq6.ipv6mr_interface, 0, sizeof mreq6.ipv6mr_interface);
- if(setsockopt(rtpfd, IPPROTO_IPV6, IPV6_JOIN_GROUP,
- &mreq6, sizeof mreq6) < 0)
- fatal(errno, "error calling setsockopt IPV6_JOIN_GROUP");
- break;
- default:
- fatal(0, "unsupported address family %d", res->ai_family);
+ /* We'll need a connection to request the incoming stream, so open one if
+ * we don't have one already */
+ if(!c) {
+ if(!(c = disorder_new(1))) exit(EXIT_FAILURE);
+ if(disorder_connect(c)) exit(EXIT_FAILURE);
}
- info("listening on %s multicast group %s",
- format_sockaddr(res->ai_addr), format_sockaddr(&mgroup.sa));
- } else
- info("listening on %s", format_sockaddr(res->ai_addr));
+ /* If no address was given, we need to pick one. But we already have a
+ * connection to the server, so we can probably use the address from that.
+ */
+ struct sockaddr_storage ss;
+ if(!node) {
+ addr_len = sizeof ss;
+ if(disorder_client_sockname(c, (struct sockaddr *)&ss, &addr_len))
+ exit(EXIT_FAILURE);
+ if(ss.ss_family != AF_INET && ss.ss_family != AF_INET6) {
+ /* We're using a Unix-domain socket, so use a loopback address. I'm
+ * cowardly using IPv4 here. */
+ struct sockaddr_in *sin = (struct sockaddr_in *)&ss;
+ sin->sin_family = AF_INET;
+ sin->sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+ }
+ sa = (struct sockaddr *)&ss;
+ prefs.ai_family = sa->sa_family;
+ }
+ /* If we have an address or port to resolve then do that now */
+ if (node || svc) {
+ struct addrinfo *ai;
+ char errbuf[1024];
+ int rc;
+ if((rc = getaddrinfo(node, svc, &prefs, &ai)))
+ disorder_fatal(0, "failed to resolve address `%s' and service `%s': %s",
+ node ? node : "-", svc ? svc : "-",
+ format_error(ec_getaddrinfo, rc,
+ errbuf, sizeof(errbuf)));
+ if(!sa)
+ sa = ai->ai_addr;
+ else {
+ assert(sa->sa_family == ai->ai_addr->sa_family);
+ switch(sa->sa_family) {
+ case AF_INET:
+ ((struct sockaddr_in *)sa)->sin_port =
+ ((struct sockaddr_in *)ai->ai_addr)->sin_port;
+ break;
+ case AF_INET6:
+ ((struct sockaddr_in6 *)sa)->sin6_port =
+ ((struct sockaddr_in6 *)ai->ai_addr)->sin6_port;
+ break;
+ default:
+ assert(!"unexpected address family");
+ }
+ }
+ }
+ if((rtpfd = socket(sa->sa_family, SOCK_DGRAM, IPPROTO_UDP)) < 0)
+ disorder_fatal(errno, "error creating socket (family %d)",
+ sa->sa_family);
+ /* Bind the address */
+ if(bind(rtpfd, sa,
+ sa->sa_family == AF_INET
+ ? sizeof (struct sockaddr_in) : sizeof (struct sockaddr_in6)) < 0)
+ disorder_fatal(errno, "error binding socket");
+ static struct sockaddr_storage bound_address;
+ addr = (struct sockaddr *)&bound_address;
+ addr_len = sizeof bound_address;
+ if(getsockname(rtpfd, addr, &addr_len) < 0)
+ disorder_fatal(errno, "error getting socket address");
+ /* Convert to string */
+ char addrname[128], portname[32];
+ if(getnameinfo(addr, addr_len,
+ addrname, sizeof addrname,
+ portname, sizeof portname,
+ NI_NUMERICHOST|NI_NUMERICSERV) < 0)
+ disorder_fatal(errno, "getnameinfo");
+ /* Ask for audio data */
+ if(disorder_rtp_request(c, addrname, portname)) exit(EXIT_FAILURE);
+ /* Report what we did */
+ disorder_info("listening on %s (stream requested)",
+ format_sockaddr(addr));
+ } else {
+ if(sl.n > 2) disorder_fatal(0, "too many address components");
+ /* Look up address and port */
+ if(!(res = get_address(&sl, &prefs, &sockname)))
+ exit(1);
+ addr = res->ai_addr;
+ addr_len = res->ai_addrlen;
+ /* Create the socket */
+ if((rtpfd = socket(res->ai_family,
+ res->ai_socktype,
+ res->ai_protocol)) < 0)
+ disorder_fatal(errno, "error creating socket");
+ /* Allow multiple listeners */
+ xsetsockopt(rtpfd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one);
+ is_multicast = multicast(addr);
+ /* The multicast and unicast/broadcast cases are different enough that they
+ * are totally split. Trying to find commonality between them causes more
+ * trouble that it's worth. */
+ if(is_multicast) {
+ /* Stash the multicast group address */
+ memcpy(&mgroup, addr, addr_len);
+ switch(res->ai_addr->sa_family) {
+ case AF_INET:
+ mgroup.in.sin_port = 0;
+ break;
+ case AF_INET6:
+ mgroup.in6.sin6_port = 0;
+ break;
+ default:
+ disorder_fatal(0, "unsupported address family %d",
+ (int)addr->sa_family);
+ }
+ /* Bind to to the multicast group address */
+ if(bind(rtpfd, addr, addr_len) < 0)
+ disorder_fatal(errno, "error binding socket to %s",
+ format_sockaddr(addr));
+ /* Add multicast group membership */
+ switch(mgroup.sa.sa_family) {
+ case PF_INET:
+ mreq.imr_multiaddr = mgroup.in.sin_addr;
+ mreq.imr_interface.s_addr = 0; /* use primary interface */
+ if(setsockopt(rtpfd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
+ &mreq, sizeof mreq) < 0)
+ disorder_fatal(errno, "error calling setsockopt IP_ADD_MEMBERSHIP");
+ break;
+ case PF_INET6:
+ mreq6.ipv6mr_multiaddr = mgroup.in6.sin6_addr;
+ memset(&mreq6.ipv6mr_interface, 0, sizeof mreq6.ipv6mr_interface);
+ if(setsockopt(rtpfd, IPPROTO_IPV6, IPV6_JOIN_GROUP,
+ &mreq6, sizeof mreq6) < 0)
+ disorder_fatal(errno, "error calling setsockopt IPV6_JOIN_GROUP");
+ break;
+ default:
+ disorder_fatal(0, "unsupported address family %d", res->ai_family);
+ }
+ /* Report what we did */
+ disorder_info("listening on %s multicast group %s",
+ format_sockaddr(addr), format_sockaddr(&mgroup.sa));
+ } else {
+ /* Bind to 0/port */
+ switch(addr->sa_family) {
+ case AF_INET: {
+ struct sockaddr_in *in = (struct sockaddr_in *)addr;
+
+ memset(&in->sin_addr, 0, sizeof (struct in_addr));
+ break;
+ }
+ case AF_INET6: {
+ struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)addr;
+
+ memset(&in6->sin6_addr, 0, sizeof (struct in6_addr));
+ break;
+ }
+ default:
+ disorder_fatal(0, "unsupported family %d", (int)addr->sa_family);
+ }
+ if(bind(rtpfd, addr, addr_len) < 0)
+ disorder_fatal(errno, "error binding socket to %s",
+ format_sockaddr(addr));
+ /* Report what we did */
+ disorder_info("listening on %s", format_sockaddr(addr));
+ }
+ }
len = sizeof rcvbuf;
if(getsockopt(rtpfd, SOL_SOCKET, SO_RCVBUF, &rcvbuf, &len) < 0)
- fatal(errno, "error calling getsockopt SO_RCVBUF");
+ disorder_fatal(errno, "error calling getsockopt SO_RCVBUF");
if(target_rcvbuf > rcvbuf) {
if(setsockopt(rtpfd, SOL_SOCKET, SO_RCVBUF,
&target_rcvbuf, sizeof target_rcvbuf) < 0)
- error(errno, "error calling setsockopt SO_RCVBUF %d",
- target_rcvbuf);
+ disorder_error(errno, "error calling setsockopt SO_RCVBUF %d",
+ target_rcvbuf);
/* We try to carry on anyway */
else
- info("changed socket receive buffer from %d to %d",
- rcvbuf, target_rcvbuf);
+ disorder_info("changed socket receive buffer from %d to %d",
+ rcvbuf, target_rcvbuf);
} else
- info("default socket receive buffer %d", rcvbuf);
+ disorder_info("default socket receive buffer %d", rcvbuf);
+ //info("minbuffer %u maxbuffer %u", minbuffer, maxbuffer);
if(logfp)
- info("WARNING: -L option can impact performance");
+ disorder_info("WARNING: -L option can impact performance");
if(control_socket) {
pthread_t tid;
if((err = pthread_create(&tid, 0, control_thread, 0)))
- fatal(err, "pthread_create control_thread");
+ disorder_fatal(err, "pthread_create control_thread");
}
if(dumpfile) {
int fd;
size_t written;
if((fd = open(dumpfile, O_RDWR|O_TRUNC|O_CREAT, 0666)) < 0)
- fatal(errno, "opening %s", dumpfile);
+ disorder_fatal(errno, "opening %s", dumpfile);
/* Fill with 0s to a suitable size */
memset(buffer, 0, sizeof buffer);
for(written = 0; written < dump_size * sizeof(int16_t);
written += sizeof buffer) {
if(write(fd, buffer, sizeof buffer) < 0)
- fatal(errno, "clearing %s", dumpfile);
+ disorder_fatal(errno, "clearing %s", dumpfile);
}
/* Map the buffer into memory for convenience */
dump_buffer = mmap(0, dump_size * sizeof(int16_t), PROT_READ|PROT_WRITE,
MAP_SHARED, fd, 0);
if(dump_buffer == (void *)-1)
- fatal(errno, "mapping %s", dumpfile);
- info("dumping to %s", dumpfile);
+ disorder_fatal(errno, "mapping %s", dumpfile);
+ disorder_info("dumping to %s", dumpfile);
}
/* Set up output. Currently we only support L16 so there's no harm setting
* the format before we know what it is! */
uaudio_set_format(44100/*Hz*/, 2/*channels*/,
16/*bits/channel*/, 1/*signed*/);
+ uaudio_set("application", "disorder-playrtp");
+ backend->configure();
backend->start(playrtp_callback, NULL);
+ if(backend->open_mixer) backend->open_mixer();
/* We receive and convert audio data in a background thread */
if((err = pthread_create(<id, 0, listen_thread, 0)))
- fatal(err, "pthread_create listen_thread");
+ disorder_fatal(err, "pthread_create listen_thread");
/* We have a second thread to add received packets to the queue */
if((err = pthread_create(<id, 0, queue_thread, 0)))
- fatal(err, "pthread_create queue_thread");
+ disorder_fatal(err, "pthread_create queue_thread");
pthread_mutex_lock(&lock);
+ time_t lastlog = 0;
for(;;) {
/* Wait for the buffer to fill up a bit */
playrtp_fill_buffer();
/* Start playing now */
- info("Playing...");
+ disorder_info("Playing...");
next_timestamp = pheap_first(&packets)->timestamp;
active = 1;
pthread_mutex_unlock(&lock);
backend->activate();
pthread_mutex_lock(&lock);
- /* Wait until the buffer empties out */
+ /* Wait until the buffer empties out
+ *
+ * If there's a packet that we can play right now then we definitely
+ * continue.
+ *
+ * Also if there's at least minbuffer samples we carry on regardless and
+ * insert silence. The assumption is there's been a pause but more data
+ * is now available.
+ */
while(nsamples >= minbuffer
|| (nsamples > 0
&& contains(pheap_first(&packets), next_timestamp))) {
+ if(monitor) {
+ time_t now = xtime(0);
+
+ if(now >= lastlog + 60) {
+ int offset = nsamples - minbuffer;
+ double offtime = (double)offset / (uaudio_rate * uaudio_channels);
+ disorder_info("%+d samples off (%d.%02ds, %d bytes)",
+ offset,
+ (int)fabs(offtime) * (offtime < 0 ? -1 : 1),
+ (int)(fabs(offtime) * 100) % 100,
+ offset * uaudio_bits / CHAR_BIT);
+ lastlog = now;
+ }
+ }
+ //fprintf(stderr, "%8u/%u (%u) PLAYING\n", nsamples, maxbuffer, minbuffer);
pthread_cond_wait(&cond, &lock);
}
+#if 0
+ if(nsamples) {
+ struct packet *p = pheap_first(&packets);
+ fprintf(stderr, "nsamples=%u (%u) next_timestamp=%"PRIx32", first packet is [%"PRIx32",%"PRIx32")\n",
+ nsamples, minbuffer, next_timestamp,p->timestamp,p->timestamp+p->nsamples);
+ }
+#endif
/* Stop playing for a bit until the buffer re-fills */
pthread_mutex_unlock(&lock);
backend->deactivate();
~mdw / disorder / blobdiff