X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=playlist.c;h=b04598b844043cc96fa01b8aa834030ee9d7697e;hp=272f25ac01edf74d7a7b5f38d8c1efa82b7f2b59;hb=fecbff83c4ca773815965f4ebdc7e6d9769a87dc;hpb=782375e0897199259d6666c4c2ec7f963210a953 diff --git a/playlist.c b/playlist.c index 272f25ac..b04598b8 100644 --- a/playlist.c +++ b/playlist.c @@ -1,8 +1,18 @@ +/* + * Copyright (C) 2007-2010 Andre Noll + * + * Licensed under the GPL v2. For licencing details see COPYING. + */ + +#include +#include + #include "para.h" #include "error.h" +#include "string.h" #include "afh.h" #include "afs.h" -#include "string.h" +#include "ipc.h" /** \file playlist.c Functions for loading and saving playlists. */ @@ -22,84 +32,118 @@ static struct playlist_info current_playlist; * * \return The return value of score_update(). */ -int playlist_update_audio_file(struct osl_row *aft_row) +static int playlist_update_audio_file(const struct osl_row *aft_row) { /* always re-insert to the top of the tree */ return score_update(aft_row, 0); } -static int add_playlist_entry(char *line, void *data) +static int add_playlist_entry(char *path, void *data) { struct playlist_info *playlist = data; struct osl_row *aft_row; - int ret = aft_get_row_of_path(line, &aft_row); + int ret = aft_get_row_of_path(path, &aft_row); if (ret < 0) { - PARA_NOTICE_LOG("path not found in audio file table: %s\n", - line); + PARA_NOTICE_LOG("%s: %s\n", path, para_strerror(-ret)); return 1; } ret = score_add(aft_row, -playlist->length); if (ret < 0) { - PARA_ERROR_LOG("failed to add %s: %d\n", line, ret); + PARA_ERROR_LOG("failed to add %s: %s\n", path, para_strerror(-ret)); return ret; } playlist->length++; return 1; } -static int load_playlist(struct osl_row *row, struct playlist_info *playlist) +/* returns -E_PLAYLIST_LOADED on _success_ to terminate the loop */ +static int load_playlist(struct osl_row *row, void *data) { - struct osl_object obj; + struct playlist_info *playlist = data; + struct osl_object playlist_def; + char *playlist_name; int ret; - ret = osl_get_object(playlists_table, row, BLOBCOL_NAME, &obj); - if (ret < 0) - return ret; - playlist->name = para_strdup(obj.data); - playlist->length = 0; - ret = osl_open_disk_object(playlists_table, row, BLOBCOL_DEF, &obj); + ret = pl_get_name_and_def_by_row(row, &playlist_name, &playlist_def); if (ret < 0) goto err; - ret = for_each_line_ro(obj.data, obj.size, add_playlist_entry, - playlist); - osl_close_disk_object(&obj); + playlist->length = 0; + ret = for_each_line_ro(playlist_def.data, playlist_def.size, + add_playlist_entry, playlist); + osl_close_disk_object(&playlist_def); if (ret < 0) goto err; ret = -E_PLAYLIST_EMPTY; if (!playlist->length) goto err; + playlist->name = para_strdup(playlist_name); PARA_NOTICE_LOG("loaded playlist %s (%u files)\n", playlist->name, playlist->length); - return 1; + return -E_PLAYLIST_LOADED; err: - free(playlist->name); - return ret; + if (ret != -E_DUMMY_ROW) + PARA_NOTICE_LOG("unable to load playlist (%s)\n", + para_strerror(-ret)); + return 1; } -/* returns -E_PLAYLIST_LOADED on _success_ to terminate the loop */ -static int playlist_loop(struct osl_row *row, void *data) +static int check_playlist_path(char *path, void *data) { - struct playlist_info *playlist = data; - int ret = load_playlist(row, playlist); - if (ret < 0) { - if (ret != -E_DUMMY_ROW) - PARA_NOTICE_LOG("unable to load playlist, trying next\n"); + struct para_buffer *pb = data; + struct osl_row *aft_row; + int ret = aft_get_row_of_path(path, &aft_row); + + if (ret >= 0) return 1; + return para_printf(pb, "%s: %s\n", path, para_strerror(-ret)); +} + +static int check_playlist(struct osl_row *row, void *data) +{ + struct para_buffer *pb = data; + struct osl_object playlist_def; + char *playlist_name; + int ret = pl_get_name_and_def_by_row(row, &playlist_name, &playlist_def); + + if (ret < 0) + return para_printf(pb, "failed to get playlist data: %s\n", + para_strerror(-ret)); + if (*playlist_name) { /* skip dummy row */ + ret = para_printf(pb, "checking playlist %s...\n", playlist_name); + if (ret < 0) + return ret; + ret = for_each_line_ro(playlist_def.data, playlist_def.size, + check_playlist_path, pb); } - return -E_PLAYLIST_LOADED; + osl_close_disk_object(&playlist_def); + return ret; } -static int load_first_available_playlist(struct playlist_info *playlist) +/** + * Check the playlist table for inconsistencies. + * + * \param fd The afs socket. + * \param query Unused. + * + * \return The return value of the underlying call to osl_rbtree_loop(). + */ +void playlist_check_callback(int fd, __a_unused const struct osl_object *query) { - int ret = osl_rbtree_loop(playlists_table, BLOBCOL_NAME, playlist, - playlist_loop); - if (ret == -E_PLAYLIST_LOADED) /* success */ - return 1; + struct para_buffer pb = { + .max_size = SHMMAX, + .private_data = &fd, + .max_size_handler = pass_buffer_as_shm + }; + int ret = para_printf(&pb, "checking playlists...\n"); + if (ret < 0) - return ret; /* error */ - PARA_NOTICE_LOG("no valid playlist found\n"); - return -E_NO_PLAYLIST; + return; + osl_rbtree_loop(playlists_table, BLOBCOL_ID, &pb, + check_playlist); + if (pb.offset) + pass_buffer_as_shm(pb.buf, pb.offset, &fd); + free(pb.buf); } /** @@ -109,6 +153,8 @@ static int load_first_available_playlist(struct playlist_info *playlist) */ void playlist_close(void) { + if (!current_playlist.name) + return; free(current_playlist.name); current_playlist.name = NULL; } @@ -118,12 +164,10 @@ void playlist_close(void) * * \param name The name of the playlist to open. * - * If name is \p NULL, load the first available playlist. Files which are - * listed in the playlist, but not contained in the database are ignored. - * This is not considered an error. + * Files which are listed in the playlist, but not contained in the database + * are ignored. This is not considered an error. * - * \return Positive on success, negative on errors. Possible errors - * include: Given playlist not found, -E_NO_PLAYLIST (no playlist defined). + * \return Standard. */ int playlist_open(char *name) { @@ -131,14 +175,93 @@ int playlist_open(char *name) int ret; struct osl_row *row; - if (!name) - return load_first_available_playlist(¤t_playlist); obj.data = name; obj.size = strlen(obj.data); - ret = osl_get_row(playlists_table, BLOBCOL_NAME, &obj, &row); + ret = osl(osl_get_row(playlists_table, BLOBCOL_NAME, &obj, &row)); if (ret < 0) { PARA_NOTICE_LOG("failed to load playlist %s\n", name); return ret; } - return load_playlist(row, ¤t_playlist); + playlist_close(); + ret = load_playlist(row, ¤t_playlist); + return (ret == -E_PLAYLIST_LOADED)? current_playlist.length : ret; +} + +static int search_path(char *path, void *data) +{ + if (strcmp(path, data)) + return 1; + return -E_PATH_FOUND; +} + +static int handle_audio_file_event(enum afs_events event, void *data) +{ + int ret, was_admissible = 0, is_admissible; + struct osl_object playlist_def; + char *new_path; + const struct osl_row *row = data; + + if (!current_playlist.name) + return 1; + if (event == AUDIO_FILE_RENAME) { + ret = row_belongs_to_score_table(row, NULL); + if (ret < 0) + return ret; + was_admissible = ret; + } + ret = get_audio_file_path_of_row(row, &new_path); + if (ret < 0) + return ret; + ret = pl_get_def_by_name(current_playlist.name, &playlist_def); + if (ret < 0) + return ret; + ret = for_each_line_ro(playlist_def.data, playlist_def.size, + search_path, new_path); + osl_close_disk_object(&playlist_def); + is_admissible = (ret < 0); + if (was_admissible && is_admissible) + return 1; + if (!was_admissible && !is_admissible) + return 1; + if (was_admissible && !is_admissible) { + current_playlist.length--; + return score_delete(row); + } + /* !was_admissible && is_admissible */ + current_playlist.length++; + return score_add(row, 0); /* play it immediately */ +} + +/** + * Handle afs events relevant to playlists. + * + * \param event The event type. + * \param pb Unused. + * \param data Depends on the event type. + * + * \return Standard. + */ +int playlists_event_handler(enum afs_events event, + __a_unused struct para_buffer *pb, void *data) +{ + int ret; + struct afsi_change_event_data *aced = data; + + switch(event) { + case AFSI_CHANGE: + return playlist_update_audio_file(aced->aft_row); + case AUDIO_FILE_RENAME: + case AUDIO_FILE_ADD: + return handle_audio_file_event(event, data); + case AUDIO_FILE_REMOVE: + ret = row_belongs_to_score_table(data, NULL); + if (ret < 0) + return ret; + if (!ret) + return 1; + current_playlist.length--; + return score_delete(data); + default: + return 1; + } }