X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/disorder/blobdiff_plain/6d2d327ca57fefaddceba10eb323451f8150e95d..0e2b222fc14b8f890fab644118cf0f43abbe450a:/lib/speaker-protocol.h

diff --git a/lib/speaker-protocol.h b/lib/speaker-protocol.h
index 8809f0f..55a016e 100644
--- a/lib/speaker-protocol.h
+++ b/lib/speaker-protocol.h
@@ -1,6 +1,6 @@
 /*
  * This file is part of DisOrder
- * Copyright (C) 2005, 2007 Richard Kettlewell
+ * Copyright (C) 2005, 2007, 2008 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
@@ -32,7 +32,6 @@ struct speaker_message {
   /** @brief Message type
    *
    * Messges from the main server:
-   * - @ref SM_PREPARE
    * - @ref SM_PLAY
    * - @ref SM_PAUSE
    * - @ref SM_RESUME
@@ -43,6 +42,7 @@ struct speaker_message {
    * - @ref SM_PAUSED
    * - @ref SM_FINISHED
    * - @ref SM_PLAYING
+   * - @ref SM_UNKNOWN
    */
   int type;
 
@@ -54,12 +54,6 @@ struct speaker_message {
 };
 
 /* messages from the main DisOrder server */
-/** @brief Prepare track @c id
- *
- * This message will include a file descriptor.  The speaker starts buffering
- * audio data read from this file against the time that it must be played.
- */
-#define SM_PREPARE 0
 
 /** @brief Play track @c id
  *
@@ -90,22 +84,36 @@ struct speaker_message {
 /** @brief Finished playing track @c id */
 #define SM_FINISHED 129
 
+/** @brief Never heard of track @c id */
+#define SM_UNKNOWN 130
+
 /** @brief Currently track @c id, @c data seconds in
  *
  * This is sent from time to time while a track is playing.
  */
 #define SM_PLAYING 131
 
-void speaker_send(int fd, const struct speaker_message *sm, int datafd);
-/* Send a message.  DATAFD is passed too if not -1.  Does not close DATAFD. */
+/** @brief Speaker process is ready
+ *
+ * This is sent once at startup when the speaker has finished its
+ * initialization. */
+#define SM_READY 132
+
+/** @brief Cancelled track @c id which wasn't playing */
+#define SM_STILLBORN 133
+
+void speaker_send(int fd, const struct speaker_message *sm);
+/* Send a message. */
 
-int speaker_recv(int fd, struct speaker_message *sm, int *datafd);
-/* Receive a message.  If DATAFD is not null then can receive an FD.  Return 0
- * on EOF, +ve if a message is read, -1 on EAGAIN, terminates on any other
- * error. */
+int speaker_recv(int fd, struct speaker_message *sm);
+/* Receive a message.  Return 0 on EOF, +ve if a message is read, -1 on EAGAIN,
+ * terminates on any other error. */
 
 /** @brief One chunk in a stream */
 struct stream_header {
+  /** @brief Number of bytes */
+  uint32_t nbytes;
+
   /** @brief Frames per second */
   uint32_t rate;
 
@@ -124,9 +132,6 @@ struct stream_header {
 #else
 # define ENDIAN_NATIVE ENDIAN_LITTLE
 #endif
-  
-  /** @brief Number of bytes */
-  uint32_t nbytes;
 } attribute((packed));
 
 static inline int formats_equal(const struct stream_header *a,