X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/disorder/blobdiff_plain/1f3ce240ea5d0cc659c45cc8c0457dd10f36d847..ad492e00c1aafb3aec7c385e1a29606742433e7e:/lib/eclient.h diff --git a/lib/eclient.h b/lib/eclient.h index 1b79cc0..be5730c 100644 --- a/lib/eclient.h +++ b/lib/eclient.h @@ -24,6 +24,8 @@ #ifndef ECLIENT_H #define ECLIENT_H +#include "rights.h" + /* Asynchronous client interface */ /** @brief Handle type */ @@ -93,19 +95,78 @@ typedef struct disorder_eclient_callbacks { typedef struct disorder_eclient_log_callbacks { /** @brief Called on (re-)connection */ void (*connected)(void *v); - + + /** @brief Called when @p track finished playing successfully */ void (*completed)(void *v, const char *track); + + /** @brief Called when @p track fails for some reason */ void (*failed)(void *v, const char *track, const char *status); + + /** @brief Called when @p user moves some track or tracks in the queue + * + * Fetch the queue again to find out what the new order is - the + * rearrangement could in principle be arbitrarily complicated. + */ void (*moved)(void *v, const char *user); + + /** @brief Called when @p track starts playing + * + * @p user might be 0. + */ void (*playing)(void *v, const char *track, const char *user/*maybe 0*/); + + /** @brief Called when @p q is added to the queue + * + * Fetch the queue again to find out where the in the queue it was added. + */ void (*queue)(void *v, struct queue_entry *q); + + /** @brief Called when @p q is added to the recent list */ void (*recent_added)(void *v, struct queue_entry *q); + + /** @brief Called when @p id is removed from the recent list */ void (*recent_removed)(void *v, const char *id); + + /** @brief Called when @id is removed from the queue + * + * @p user might be 0. + */ void (*removed)(void *v, const char *id, const char *user/*maybe 0*/); + + /** @brief Called when @p track is scratched */ void (*scratched)(void *v, const char *track, const char *user); + + /** @brief Called with the current state whenever it changes + * + * State bits are: + * - @ref DISORDER_PLAYING_ENABLED + * - @ref DISORDER_RANDOM_ENABLED + * - @ref DISORDER_TRACK_PAUSED + * - @ref DISORDER_PLAYING + * - @ref DISORDER_CONNECTED + */ void (*state)(void *v, unsigned long state); + + /** @brief Called when the volume changes */ void (*volume)(void *v, int left, int right); + + /** @brief Called when a rescan completes */ void (*rescanned)(void *v); + + /** @brief Called when a user is created (admins only) */ + void (*user_add)(void *v, const char *user); + + /** @brief Called when a user is confirmed (admins only) */ + void (*user_confirm)(void *v, const char *user); + + /** @brief Called when a user is deleted (admins only) */ + void (*user_delete)(void *v, const char *user); + + /** @brief Called when a user is edited (admins only) */ + void (*user_edit)(void *v, const char *user, const char *property); + + /** @brief Called when your rights change */ + void (*rights_changed)(void *v, rights_type new_rights); } disorder_eclient_log_callbacks; /* State bits */ @@ -144,32 +205,89 @@ 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. */ + * Unlike in earlier releases, these are not allowed to be NULL. */ -typedef void disorder_eclient_no_response(void *v); -/* completion callback with no data */ +/** @brief Trivial completion callback + * @param v User data + * @param error Error string or NULL on succes + */ +typedef void disorder_eclient_no_response(void *v, + const char *error); /** @brief String result completion callback * @param v User data - * @param value or NULL + * @param error Error string or NULL on succes + * @param value Result or NULL + * + * @p error will be NULL on success. In this case @p value will be the result + * (which might be NULL for disorder_eclient_get(), + * disorder_eclient_get_global() and disorder_eclient_userinfo()). * - * @p value can be NULL for disorder_eclient_get(), - * disorder_eclient_get_global() and disorder_eclient_userinfo(). + * @p error will be non-NULL on failure. In this case @p value is always NULL. */ -typedef void disorder_eclient_string_response(void *v, const char *value); +typedef void disorder_eclient_string_response(void *v, + const char *error, + const char *value); -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 */ +/** @brief String result completion callback + * @param v User data + * @param error Error string or NULL on succes + * @param value Result or 0 + * + * @p error will be NULL on success. In this case @p value will be the result. + * + * @p error will be non-NULL on failure. In this case @p value is always 0. + */ +typedef void disorder_eclient_integer_response(void *v, + const char *error, + long value); +/** @brief Volume completion callback + * @param v User data + * @param error Error string or NULL on success + * @param l Left channel volume + * @param r Right channel volume + * + * @p error will be NULL on success. In this case @p l and @p r will be the + * result. + * + * @p error will be non-NULL on failure. In this case @p l and @p r are always + * 0. + */ +typedef void disorder_eclient_volume_response(void *v, + const char *error, + int l, int r); -typedef void disorder_eclient_queue_response(void *v, struct queue_entry *q); -/* completion callback for queue/recent listing */ +/** @brief Queue request completion callback + * @param v User data + * @param error Error string or NULL on success + * @param q Head of queue data list + * + * @p error will be NULL on success. In this case @p q will be the (head of + * the) result. + * + * @p error will be non-NULL on failure. In this case @p q may be NULL but + * MIGHT also be some subset of the queue. For consistent behavior it should + * be ignored in the error case. + */ +typedef void disorder_eclient_queue_response(void *v, + const char *error, + struct queue_entry *q); -typedef void disorder_eclient_list_response(void *v, int nvec, char **vec); -/* completion callback for file listing etc */ +/** @brief List request completion callback + * @param v User data + * @param error Error string or NULL on success + * @param nvec Number of elements in response list + * @param vec Pointer to response list + * + * @p error will be NULL on success. In this case @p nvec and @p vec will give + * the result. + * + * @p error will be non-NULL on failure. In this case @p nvec and @p vec will + * be 0 and NULL. + */ +typedef void disorder_eclient_list_response(void *v, + const char *error, + int nvec, char **vec); disorder_eclient *disorder_eclient_new(const disorder_eclient_callbacks *cb, void *u);