X-Git-Url: https://git.distorted.org.uk/~mdw/disorder/blobdiff_plain/6d2d327ca57fefaddceba10eb323451f8150e95d..a9f0ad12d639cdb5186f0482d2856278b41671a2:/server/speaker.h

diff --git a/server/speaker.h b/server/speaker.h
index 9a48ca6..ae4eac3 100644
--- a/server/speaker.h
+++ b/server/speaker.h
@@ -47,9 +47,13 @@
 
 /** @brief Bytes to send per network packet
  *
+ * This is the maximum number of bytes we pass to write(2); to determine actual
+ * packet sizes, add a UDP header and an IP header (and a link layer header if
+ * it's the link layer size you care about).
+ *
  * Don't make this too big or arithmetic will start to overflow.
  */
-#define NETWORK_BYTES (1024+sizeof(struct rtp_header))
+#define NETWORK_BYTES (1500-8/*UDP*/-40/*IP*/-8/*conservatism*/)
 
 /** @brief Maximum RTP playahead (ms) */
 #define RTP_AHEAD_MS 1000
@@ -135,11 +139,9 @@ struct speaker_backend {
    * If it is @ref device_closed then the device should be opened with
    * the right sample format.
    *
-   * Some devices are effectively always open and have no error state,
-   * in which case this callback can be NULL.  In this case @ref
-   * FIXED_FORMAT must be set.  Note that @ref device_state still
-   * switches between @ref device_open and @ref device_closed in this
-   * case.
+   * Some devices are effectively always open and have no error state, in which
+   * case this callback can be NULL.  Note that @ref device_state still
+   * switches between @ref device_open and @ref device_closed in this case.
    */
   void (*activate)(void);
 
@@ -214,6 +216,8 @@ extern struct track *playing;
 extern const struct speaker_backend network_backend;
 extern const struct speaker_backend alsa_backend;
 extern const struct speaker_backend command_backend;
+extern const struct speaker_backend coreaudio_backend;
+extern const struct speaker_backend oss_backend;
 
 extern struct pollfd fds[NFDS];
 extern int fdno;