update mac support

[disorder] / lib / eclient.h

/*
 * This file is part of DisOrder.
 * Copyright (C) 2006 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
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */

#ifndef ECLIENT_H
#define ECLIENT_H

/* Asynchronous client interface */

typedef struct disorder_eclient disorder_eclient;

struct queue_entry;

#define DISORDER_POLL_READ 1u           /* want to read FD */
#define DISORDER_POLL_WRITE 2u          /* want to write FD */

/* Callbacks for all clients.  These must all be valid. */
typedef struct disorder_eclient_callbacks {
  void (*comms_error)(void *u, const char *msg);
  /* Called when a communication error (e.g. connected refused) occurs.  U
   * comes from the _new() call and MSG describes the problem.*/
  
  void (*protocol_error)(void *u, void *v, int code, const char *msg);
  /* Called when a command fails (including initial authorization).  U comes
   * from the _new() call, V from the failed command or a null pointer if the
   * error is in setup and MSG describes the problem. */
  
  void (*poll)(void *u, disorder_eclient *c, int fd, unsigned mode);
  /* Set poll/select flags for FD according to MODE.  FD will never be -1.
   * Before FD is closed, you will always get a call with MODE=0.  U comes from
   * the _new() call. */

  void (*report)(void *u, const char *msg);
  /* Called from time to time to report what's doing.  Called with MSG=0
   * when the client goes idle.*/
} disorder_eclient_callbacks;

/* Callbacks for log clients.  All of these are allowed to be a null pointers
 * in which case you don't get told about that log event. */
typedef struct disorder_eclient_log_callbacks {
  void (*connected)(void *v);
  /* Called on (re-)connection */

  /* See disorder_protocol(5) for documentation for the rest */
  
  void (*completed)(void *v, const char *track);
  void (*failed)(void *v, const char *track, const char *status);
  void (*moved)(void *v, const char *user);
  void (*playing)(void *v, const char *track, const char *user/*maybe 0*/);
  void (*queue)(void *v, struct queue_entry *q);
  void (*recent_added)(void *v, struct queue_entry *q);
  void (*recent_removed)(void *v, const char *id);
  void (*removed)(void *v, const char *id, const char *user/*maybe 0*/);
  void (*scratched)(void *v, const char *track, const char *user);
  void (*state)(void *v, unsigned long state);
  void (*volume)(void *v, int left, int right);
} disorder_eclient_log_callbacks;

/* State bits */
#define DISORDER_PLAYING_ENABLED  0x00000001 /* play is enabled */
#define DISORDER_RANDOM_ENABLED   0x00000002 /* random play is enabled */
#define DISORDER_TRACK_PAUSED     0x00000004 /* track is paused */

struct queue_entry;
struct kvp;
struct sink;

/* Completion callbacks.  These provide the result of operations to the caller.
 * It is always allowed for these to be null pointers if you don't care about
 * the result. */

typedef void disorder_eclient_no_response(void *v);
/* completion callback with no data */

typedef void disorder_eclient_string_response(void *v, const char *value);
/* completion callback with a string result */

typedef void disorder_eclient_integer_response(void *v, long value);
/* completion callback with a integer result */

typedef void disorder_eclient_volume_response(void *v, int l, int r);
/* completion callback with a pair of integer results */

typedef void disorder_eclient_queue_response(void *v, struct queue_entry *q);
/* completion callback for queue/recent listing */

typedef void disorder_eclient_list_response(void *v, int nvec, char **vec);
/* completion callback for file listing etc */

disorder_eclient *disorder_eclient_new(const disorder_eclient_callbacks *cb,
                                       void *u);
/* Create a new client */

void disorder_eclient_close(disorder_eclient *c);
/* Close C */

void disorder_eclient_polled(disorder_eclient *c, unsigned mode);
/* Should be called when c's FD is readable and/or writable, and in any case
 * from time to time (so that retries work). */

int disorder_eclient_version(disorder_eclient *c,
                             disorder_eclient_string_response *completed,
                             void *v);
/* fetch the server version */

int disorder_eclient_play(disorder_eclient *c,
                          const char *track,
                          disorder_eclient_no_response *completed,
                          void *v);
/* add a track to the queue */

int disorder_eclient_pause(disorder_eclient *c,
                           disorder_eclient_no_response *completed,
                           void *v);
/* add a track to the queue */

int disorder_eclient_resume(disorder_eclient *c,
                            disorder_eclient_no_response *completed,
                            void *v);
/* add a track to the queue */

int disorder_eclient_scratch(disorder_eclient *c,
                             const char *id,
                             disorder_eclient_no_response *completed,
                             void *v);
/* scratch a track by ID */

int disorder_eclient_scratch_playing(disorder_eclient *c,
                                     disorder_eclient_no_response *completed,
                                     void *v);
/* scratch the playing track whatever it is */

int disorder_eclient_remove(disorder_eclient *c,
                            const char *id,
                            disorder_eclient_no_response *completed,
                            void *v);
/* remove a track from the queue */

int disorder_eclient_moveafter(disorder_eclient *c,
                               const char *target,
                               int nids,
                               const char **ids,
                               disorder_eclient_no_response *completed,
                               void *v);
/* move tracks within the queue */

int disorder_eclient_playing(disorder_eclient *c,
                             disorder_eclient_queue_response *completed,
                             void *v);
/* find the currently playing track (0 for none) */

int disorder_eclient_queue(disorder_eclient *c,
                           disorder_eclient_queue_response *completed,
                           void *v);
/* list recently played tracks */

int disorder_eclient_recent(disorder_eclient *c,
                            disorder_eclient_queue_response *completed,
                            void *v);
/* list recently played tracks */

int disorder_eclient_files(disorder_eclient *c,
                           disorder_eclient_list_response *completed,
                           const char *dir,
                           const char *re,
                           void *v);
/* list files in a directory, matching RE if not a null pointer */

int disorder_eclient_dirs(disorder_eclient *c,
                          disorder_eclient_list_response *completed,
                          const char *dir,
                          const char *re,
                          void *v);
/* list directories in a directory, matching RE if not a null pointer */

int disorder_eclient_namepart(disorder_eclient *c,
                              disorder_eclient_string_response *completed,
                              const char *track,
                              const char *context,
                              const char *part,
                              void *v);
/* look up a track name part */

int disorder_eclient_length(disorder_eclient *c,
                            disorder_eclient_integer_response *completed,
                            const char *track,
                            void *v);
/* look up a track name length */

int disorder_eclient_volume(disorder_eclient *c,
                            disorder_eclient_volume_response *callback,
                            int l, int r,
                            void *v);
/* If L and R are both -ve gets the volume.
 * If neither are -ve then sets the volume.
 * Otherwise asserts!
 */

int disorder_eclient_enable(disorder_eclient *c,
                            disorder_eclient_no_response *callback,
                            void *v);
int disorder_eclient_disable(disorder_eclient *c,
                             disorder_eclient_no_response *callback,
                             void *v);
int disorder_eclient_random_enable(disorder_eclient *c,
                                   disorder_eclient_no_response *callback,
                                   void *v);
int disorder_eclient_random_disable(disorder_eclient *c,
                                    disorder_eclient_no_response *callback,
                                    void *v);
/* Enable/disable play/random play */

int disorder_eclient_resolve(disorder_eclient *c,
                             disorder_eclient_string_response *completed,
                             const char *track,
                             void *v);
/* Resolve aliases */

int disorder_eclient_log(disorder_eclient *c,
                         const disorder_eclient_log_callbacks *callbacks,
                         void *v);
/* Make this a log client (forever - it automatically becomes one again upon
 * reconnection) */

int disorder_eclient_get(disorder_eclient *c,
                         disorder_eclient_string_response *completed,
                         const char *track, const char *pref,
                         void *v);
int disorder_eclient_set(disorder_eclient *c,
                         disorder_eclient_no_response *completed,
                         const char *track, const char *pref, 
                         const char *value,
                         void *v);
int disorder_eclient_unset(disorder_eclient *c,
                           disorder_eclient_no_response *completed,
                           const char *track, const char *pref, 
                           void *v);
/* Get/set preference values */

int disorder_eclient_search(disorder_eclient *c,
                            disorder_eclient_list_response *completed,
                            const char *terms,
                            void *v);

#endif

/*
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*/