-extern const char *audio_formats[];
-#define DEFINE_AUDIO_FORMAT_ARRAY const char *audio_formats[] = {"mp3", "ogg", "aac", NULL}
-#define MAX_STREAM_SLOTS 5
-/**
- * the possible modes of operation
- *
- * - off: disconnect from para_server
- * - on: receive status information from para_server and play the audio stream
- * - sb: only receive status information but not the audio stream
-*/
-enum {AUDIOD_OFF, AUDIOD_ON, AUDIOD_STANDBY};
-
-/**
- * describes one instance of a receiver-filter-writer chain
- *
- * \sa receier_node, receiver, filter, filter_node, filter_chain, writer,
- * writer_node, writer_node_group.
- */
-struct slot_info {
- /** number of the audio format in this slot */
- int format;
- /** writer start time */
- struct timeval wstime;
- /** the receiver info associated with this slot */
- struct receiver_node *receiver_node;
- /** the active filter chain */
- struct filter_chain *fc;
- /** the active writer node group */
- struct writer_node_group *wng;
-};