/*
- * Copyright (C) 2007 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2007-2008 Andre Noll <maan@systemlinux.org>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
struct afsi_change_event_data {
- const struct osl_row *aft_row;
+ struct osl_row *aft_row;
struct afs_info *old_afsi;
};
HASH_TYPE *hash;
};
int make_status_items(struct ls_data *d, struct para_buffer *pb);
+void make_empty_status_items(char *buf);
-#define AFS_STATUS_INFO_SIZE 4096
+/** At most that many bytes will be passed from afs to para_server. */
+#define VERBOSE_LS_OUTPUT_SIZE 4096
+/** Data about the current audio file, passed from afs to server. */
struct audio_file_data {
- enum play_mode current_play_mode;
- char afs_status_info[AFS_STATUS_INFO_SIZE];
+ /** Same info as ls -lv -p current audio_file. */
+ char verbose_ls_output[VERBOSE_LS_OUTPUT_SIZE];
+ /** The open file descriptor to the current audio file. */
int fd;
- struct afs_info afsi;
+ /** Vss needs this for streaming. */
struct afh_info afhi;
};
enum afs_server_code {
NEXT_AUDIO_FILE,
+ NO_ADMISSIBLE_FILES,
AFD_CHANGE
};
int (*action)(struct osl_table *table, struct osl_row *row, const char *name, void *data);
};
-/* afs */
-typedef int callback_function(const struct osl_object *, struct osl_object *);
+
+/**
+ * Afs command handlers run as a process which is not related to the afs
+ * process, i.e. they can not change the address space of afs directly.
+ * Therefore afs commands typically consist of two functions: The command
+ * handler and the corresponding callback function that runs in afs context.
+ *
+ * \sa send_callback_request().
+ */
+typedef void callback_function(int fd, const struct osl_object *);
+
+/**
+ * Callbacks send chunks to data back to the command handler. Pointers to
+ * this type of function are used by \ref send_callback_request and friends
+ * to deal with the data in the command handler process.
+ *
+ * \sa \ref send_callback_request().
+ */
+typedef int callback_result_handler(struct osl_object *result, void *private);
+int send_result(struct osl_object *result, void *fd_ptr);
+int pass_buffer_as_shm(char *buf, size_t size, void *fd_ptr);
+
__noreturn void afs_init(uint32_t cookie, int socket_fd);
void afs_event(enum afs_events event, struct para_buffer *pb,
void *data);
int send_callback_request(callback_function *f, struct osl_object *query,
- struct osl_object *result);
-int send_standard_callback_request(int argc, char * const * const argv,
- callback_function *f, struct osl_object *result);
+ callback_result_handler *result_handler,
+ void *private_result_data);
int send_option_arg_callback_request(struct osl_object *options,
- int argc, char * const * const argv, callback_function *f,
- struct osl_object *result);
+ int argc, char * const * const argv, callback_function *f,
+ callback_result_handler *result_handler,
+ void *private_result_data);
+int send_standard_callback_request(int argc, char * const * const argv,
+ callback_function *f, callback_result_handler *result_handler,
+ void *private_result_data);
int stdin_command(int fd, struct osl_object *arg_obj, callback_function *f,
- unsigned max_len, struct osl_object *result);
+ unsigned max_len, callback_result_handler *result_handler,
+ void *private_result_data);
int string_compare(const struct osl_object *obj1, const struct osl_object *obj2);
-int close_audio_file(struct audio_file_data *afd);
int for_each_matching_row(struct pattern_match_data *pmd);
/* score */
/* aft */
void aft_init(struct afs_table *t);
int aft_get_row_of_path(const char *path, struct osl_row **row);
-int open_and_update_audio_file(struct osl_row *aft_row,
- struct audio_file_data *afd, long score);
+int open_and_update_audio_file(struct osl_row *aft_row, long score,
+ struct audio_file_data *afd);
int load_afd(int shmid, struct audio_file_data *afd);
int load_afsi(struct afs_info *afsi, struct osl_object *obj);
void save_afsi(struct afs_info *afsi, struct osl_object *obj);
int get_audio_file_path_of_row(const struct osl_row *row, char **path);
int get_afsi_object_of_row(const struct osl_row *row, struct osl_object *obj);
int audio_file_loop(void *private_data, osl_rbtree_loop_func *func);
-int aft_check_callback(const struct osl_object *query, struct osl_object *result);
+void aft_check_callback(int fd, __a_unused const struct osl_object *query);
/* mood */
int change_current_mood(char *mood_name);
void close_current_mood(void);
int reload_current_mood(void);
-int mood_check_callback(__a_unused const struct osl_object *query,
- struct osl_object *result);
+void mood_check_callback(int fd, __a_unused const struct osl_object *query);
/* playlist */
int playlist_open(char *name);
void playlist_close(void);
-int playlist_check_callback(__a_unused const struct osl_object *query,
- struct osl_object *result);
+void playlist_check_callback(int fd, __a_unused const struct osl_object *query);
/** evaluates to 1 if x < y, to -1 if x > y and to 0 if x == y */
#define NUM_COMPARE(x, y) ((int)((x) < (y)) - (int)((x) > (y)))
NUM_BLOB_COLUMNS
};
-/** Define an osl table decription for a blob table. */
+/** Define an osl table description for a blob table. */
#define DEFINE_BLOB_TABLE_DESC(table_name) \
struct osl_table_description table_name ## _table_desc = { \
.name = #table_name, \
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