Add plugin headers

src/plugins/mtd-plugins.h

@@ -0,0 +1,183 @@
+/*
+ * $Id: $
+ */
+
+#ifndef _MTD_PLUGINS_H_
+#define _MTD_PLUGINS_H_
+
+#define PLUGIN_OUTPUT    0
+#define PLUGIN_SCANNER   1
+#define PLUGIN_DATABASE  2
+#define PLUGIN_OTHER     3
+
+#define PLUGIN_VERSION   1
+
+struct tag_wsconninfo;
+typedef struct tag_wsconninfo WS_CONNINFO;
+
+typedef struct tag_plugin_output_fn {
+    void (*handler)(WS_CONNINFO *pwsc);
+} PLUGIN_OUTPUT_FN;
+
+typedef struct tag_plugin_info {
+    int version;
+    int type;
+    char *server;
+    char *url;     /* regex of namespace to handle if OUTPUT type */
+    void *handler_functions;
+} PLUGIN_INFO;
+
+/* these are the functions that must be exported by the plugin */
+PLUGIN_INFO *plugin_info(void);
+
+/* xml helpers for output plugins */
+struct tag_xmlstruct;
+typedef struct tag_xmlstruct XMLSTRUCT;
+typedef void *PARSETREE;
+
+extern XMLSTRUCT *pi_xml_init(WS_CONNINFO *pwsc, int emit_header);
+extern void pi_xml_push(XMLSTRUCT *pxml, char *term);
+extern void pi_xml_pop(XMLSTRUCT *pxml);
+extern void pi_xml_output(XMLSTRUCT *pxml, char *section, char *fmt, ...);
+extern void pi_xml_deinit(XMLSTRUCT *pxml);
+
+/* webserver helpers for output plugins */
+extern char *pi_ws_uri(WS_CONNINFO *pwsc);
+extern void pi_ws_close(WS_CONNINFO *pwsc);
+extern int pi_ws_returnerror(WS_CONNINFO *pwsc, int error, char *description);
+extern char *pi_ws_getvar(WS_CONNINFO *pwsc, char *var);
+
+/* misc helpers */
+extern char *pi_server_ver(void);
+extern int pi_server_name(char *, int *);
+
+/* logging */
+#define E_FATAL 0
+#define E_LOG   1
+#define E_INF   5
+#define E_DBG   9
+
+void pi_log(int level, char *fmt, ...);
+
+
+
+/* db stuff */
+typedef enum {
+    queryTypeItems,
+    queryTypePlaylists,
+    queryTypePlaylistItems,
+    queryTypeBrowseArtists,
+    queryTypeBrowseAlbums,
+    queryTypeBrowseGenres,
+    queryTypeBrowseComposers
+} QueryType_t;
+
+typedef enum {
+    indexTypeNone,
+    indexTypeFirst,
+    indexTypeLast,
+    indexTypeSub
+} IndexType_t;
+
+typedef enum {
+    // generic meta data
+    metaItemId,
+    metaItemName,
+    metaItemKind,
+    metaPersistentId,
+    metaContainerItemId,
+    metaParentContainerId,
+
+    firstTypeSpecificMetaId,
+
+    // song meta data
+    metaSongAlbum = firstTypeSpecificMetaId,
+    metaSongArtist,
+    metaSongBPM,
+    metaSongBitRate,
+    metaSongComment,
+    metaSongCompilation,
+    metaSongComposer,
+    metaSongDataKind,
+    metaSongDataURL,
+    metaSongDateAdded,
+    metaSongDateModified,
+    metaSongDescription,
+    metaSongDisabled,
+    metaSongDiscCount,
+    metaSongDiscNumber,
+    metaSongEqPreset,
+    metaSongFormat,
+    metaSongGenre,
+    metaSongGrouping,
+    metaSongRelativeVolume,
+    metaSongSampleRate,
+    metaSongSize,
+    metaSongStartTime,
+    metaSongStopTime,
+    metaSongTime,
+    metaSongTrackCount,
+    metaSongTrackNumber,
+    metaSongUserRating,
+    metaSongYear,
+
+    /* iTunes 4.5 + */
+    metaSongCodecType,
+    metaSongCodecSubType,
+    metaItunesNormVolume,
+    metaItmsSongId,
+    metaItmsArtistId,
+    metaItmsPlaylistId,
+    metaItmsComposerId,
+    metaItmsGenreId,
+    metaItmsStorefrontId,
+    metaItunesSmartPlaylist,
+
+    /* iTunes 5.0 + */
+    metaSongContentRating,
+    metaHasChildContainers,
+
+    /* iTunes 6.0.2+ */
+    metaItunesHasVideo,
+
+    /* mt-daapd specific */
+    metaMPlaylistSpec,
+    metaMPlaylistType
+} MetaFieldName_t;
+
+typedef unsigned long long MetaField_t;
+
+typedef struct tag_dbqueryinfo {
+    QueryType_t query_type;
+    IndexType_t index_type;
+    MetaField_t meta;
+    int zero_length; /* emit zero-length strings? */
+    int index_low;
+    int index_high;
+    int playlist_id;
+    int db_id;
+    int session_id;
+    int want_count;
+    int specifiedtotalcount;
+    int uri_count;
+    char *uri_sections[10];
+    PARSETREE pt;
+    void *output_info;
+} DBQUERYINFO;
+
+
+/* db helpers */
+extern int pi_db_count(void);
+extern int pi_db_enum_start(char **pe, DBQUERYINFO *pinfo);
+extern int pi_db_enum_fetch_row(char **pe, char ***row, DBQUERYINFO *pinfo);
+extern int pi_db_enum_end(char **pe);
+extern void pi_stream(WS_CONNINFO *pwsc, DBQUERYINFO *pqi, char *id);
+
+/* smart parser helpers */
+extern PARSETREE pi_sp_init(void);
+extern int pi_sp_parse(PARSETREE tree, char *term);
+extern int pi_sp_dispose(PARSETREE tree);
+extern char *pi_sp_get_error(PARSETREE tree);
+
+
+#endif /* _MTD_PLUGINS_H_ */