more empeg fixes

[disorder] / server / speaker-network.c

diff --git a/server/speaker-network.c b/server/speaker-network.c
index affc1a16a7527657811528553da89619330f2b2d..89412f55486aa637d74d1da1b5e9d8830b403ad1 100644 (file)
--- a/server/speaker-network.c
+++ b/server/speaker-network.c
@@ -30,6 +30,9 @@
 #include <sys/socket.h>
 #include <sys/uio.h>
 #include <assert.h>
+#include <net/if.h>
+#include <ifaddrs.h>
+#include <errno.h>
 
 #include "configuration.h"
 #include "syscalls.h"
@@ -37,6 +40,7 @@
 #include "addr.h"
 #include "timeval.h"
 #include "rtp.h"
+#include "ifreq.h"
 #include "speaker-protocol.h"
 #include "speaker.h"
 
@@ -103,11 +107,6 @@ static void network_init(void) {
   socklen_t len;
   char *sockname, *ssockname;
 
-  /* Override sample format */
-  config->sample_format.rate = 44100;
-  config->sample_format.channels = 2;
-  config->sample_format.bits = 16;
-  config->sample_format.byte_format = AO_FMT_BIG;
   res = get_address(&config->broadcast, &pref, &sockname);
   if(!res) exit(-1);
   if(config->broadcast_from.n) {
@@ -145,10 +144,28 @@ static void network_init(void) {
     default:
       fatal(0, "unsupported address family %d", res->ai_family);
     }
+    info("multicasting on %s", sockname);
   } else {
-    /* Presumably just broadcasting */
-    if(setsockopt(bfd, SOL_SOCKET, SO_BROADCAST, &one, sizeof one) < 0)
-      fatal(errno, "error setting SO_BROADCAST on broadcast socket");
+    struct ifaddrs *ifs;
+
+    if(getifaddrs(&ifs) < 0)
+      fatal(errno, "error calling getifaddrs");
+    while(ifs) {
+      /* (At least on Darwin) IFF_BROADCAST might be set but ifa_broadaddr
+       * still a null pointer.  It turns out that there's a subsequent entry
+       * for he same interface which _does_ have ifa_broadaddr though... */
+      if((ifs->ifa_flags & IFF_BROADCAST)
+         && ifs->ifa_broadaddr
+         && sockaddr_equal(ifs->ifa_broadaddr, res->ai_addr))
+        break;
+      ifs = ifs->ifa_next;
+    }
+    if(ifs) {
+      if(setsockopt(bfd, SOL_SOCKET, SO_BROADCAST, &one, sizeof one) < 0)
+        fatal(errno, "error setting SO_BROADCAST on broadcast socket");
+      info("broadcasting on %s (%s)", sockname, ifs->ifa_name);
+    } else
+      info("unicasting on %s", sockname);
   }
   len = sizeof sndbuf;
   if(getsockopt(bfd, SOL_SOCKET, SO_SNDBUF,
@@ -172,14 +189,13 @@ static void network_init(void) {
     fatal(errno, "error connecting broadcast socket to %s", sockname);
   /* Select an SSRC */
   gcry_randomize(&rtp_id, sizeof rtp_id, GCRY_STRONG_RANDOM);
-  info("selected network backend, sending to %s", sockname);
 }
 
 /** @brief Play over the network */
 static size_t network_play(size_t frames) {
   struct rtp_header header;
   struct iovec vec[2];
-  size_t bytes = frames * device_bpf, written_frames;
+  size_t bytes = frames * bpf, written_frames;
   int written_bytes;
   /* We transmit using RTP (RFC3550) and attempt to conform to the internet
    * AVT profile (RFC3551). */
@@ -195,8 +211,8 @@ static size_t network_play(size_t frames) {
     /* Find the number of microseconds elapsed since rtp_time=0 */
     delta = tvsub_us(now, rtp_time_0);
     assert(delta <= UINT64_MAX / 88200);
-    target_rtp_time = (delta * playing->format.rate
-                       * playing->format.channels) / 1000000;
+    target_rtp_time = (delta * config->sample_format.rate
+                       * config->sample_format.channels) / 1000000;
     /* Overflows at ~6 years uptime with 44100Hz stereo */
 
     /* rtp_time is the number of samples we've played.  NB that we play
@@ -255,7 +271,7 @@ static size_t network_play(size_t frames) {
   if(bytes > NETWORK_BYTES - sizeof header) {
     bytes = NETWORK_BYTES - sizeof header;
     /* Always send a whole number of frames */
-    bytes -= bytes % device_bpf;
+    bytes -= bytes % bpf;
   }
   /* "The RTP clock rate used for generating the RTP timestamp is independent
    * of the number of channels and the encoding; it equals the number of
@@ -281,9 +297,9 @@ static size_t network_play(size_t frames) {
   } else
     audio_errors /= 2;
   written_bytes -= sizeof (struct rtp_header);
-  written_frames = written_bytes / device_bpf;
+  written_frames = written_bytes / bpf;
   /* Advance RTP's notion of the time */
-  rtp_time += written_frames * playing->format.channels;
+  rtp_time += written_frames * config->sample_format.channels;
   return written_frames;
 }
 
@@ -324,7 +340,7 @@ static int network_ready(void) {
 
 const struct speaker_backend network_backend = {
   BACKEND_NETWORK,
-  FIXED_FORMAT,
+  0,
   network_init,
   0,                                    /* activate */
   network_play,