playlists.c File Reference

Playlist helper functions. More...

#include "compile_time.h"
#include "src/mympd_client/playlists.h"
#include "dist/rax/rax.h"
#include "src/lib/convert.h"
#include "src/lib/fields.h"
#include "src/lib/log.h"
#include "src/lib/random.h"
#include "src/lib/rax_extras.h"
#include "src/lib/sds_extras.h"
#include "src/lib/smartpls.h"
#include "src/lib/utility.h"
#include "src/mympd_client/errorhandler.h"
#include "src/mympd_client/shortcuts.h"
#include "src/mympd_client/tags.h"
#include <stdbool.h>
#include <string.h>

Include dependency graph for playlists.c:

Functions
static bool	playlist_sort (struct t_partition_state *partition_state, const char *playlist, const char *tagstr, bool sortdesc, sds *error)
static bool	replace_playlist (struct t_partition_state *partition_state, const char *new_pl, const char *to_replace_pl, sds *error)
static bool	mympd_worker_playlist_content_enumerate_mpd (struct t_partition_state *partition_state, const char *plist, unsigned *count, unsigned *duration, sds *error)
static bool	mympd_worker_playlist_content_enumerate_manual (struct t_partition_state *partition_state, const char *plist, unsigned *count, unsigned *duration, sds *error)
static bool	song_exists (struct t_partition_state *partition_state, const char *uri)
bool	mympd_client_get_all_playlists (struct t_partition_state *partition_state, struct t_list *l, bool smartpls, sds *error)
time_t	mympd_client_get_playlist_mtime (struct t_partition_state *partition_state, const char *playlist)
int64_t	mympd_client_playlist_dedup_all (struct t_partition_state *partition_state, bool remove, sds *error)
int64_t	mympd_client_playlist_dedup (struct t_partition_state *partition_state, const char *playlist, bool remove, sds *error)
int	mympd_client_playlist_validate_all (struct t_partition_state *partition_state, bool remove, sds *error)
int	mympd_client_playlist_validate (struct t_partition_state *partition_state, const char *playlist, bool remove, sds *error)
bool	mympd_client_playlist_shuffle (struct t_partition_state *partition_state, const char *playlist, sds *error)
bool	mympd_client_playlist_sort (struct t_partition_state *partition_state, const char *playlist, const char *tagstr, bool sortdesc, sds *error)
bool	mympd_client_enum_playlist (struct t_partition_state *partition_state, const char *plist, unsigned *count, unsigned *duration, sds *error)
bool	mympd_client_playlist_crop (struct t_partition_state *partition_state, const char *plist, unsigned num_entries)
bool	mympd_client_playlist_clear (struct t_partition_state *partition_state, const char *plist, sds *error)
bool	mympd_send_list_playlist_range (struct t_partition_state *partition_state, const char *plist, unsigned start, unsigned end)
bool	mympd_send_list_playlist_range_meta (struct t_partition_state *partition_state, const char *plist, unsigned start, unsigned end)
bool	mympd_client_playlist_get (struct t_partition_state *partition_state, const char *plist, bool reverse, struct t_list *l, sds *error)
enum playlist_sort_types	playlist_parse_sort (const char *str)

Detailed Description

Playlist helper functions.

Function Documentation

mympd_client_enum_playlist()

bool mympd_client_enum_playlist	(	struct t_partition_state *	partition_state,
		const char *	plist,
		unsigned *	count,
		unsigned *	duration,
		sds *	error
	)

Counts the number of songs in the playlist

Parameters

partition_state	pointer to partition specific states
plist	playlist to enumerate
count	pointer to unsigned for entity count
duration	pointer to unsigned for total playtime
error	pointer to an already allocated sds string for the error message

Returns

number of songs or -1 on error

mympd_client_get_all_playlists()

bool mympd_client_get_all_playlists	(	struct t_partition_state *	partition_state,
		struct t_list *	l,
		bool	smartpls,
		sds *	error
	)

Public functions Gets all playlists.

Parameters

partition_state	pointer to partition state
l	pointer to list to populate
smartpls	true = integrate smart playlists, false = ignore smart playlists
error	pointer to an already allocated sds string for the error message

Returns

true on success, else false

mympd_client_get_playlist_mtime()

time_t mympd_client_get_playlist_mtime	(	struct t_partition_state *	partition_state,
		const char *	playlist
	)

Returns the playlists last modification time

Parameters

partition_state	pointer to partition specific states
playlist	name of the playlist to check

Returns

last modification time

mympd_client_playlist_clear()

bool mympd_client_playlist_clear	(	struct t_partition_state *	partition_state,
		const char *	plist,
		sds *	error
	)

Clears a playlist

Parameters

partition_state	pointer to partition specific states
plist	playlist name
error	pointer to an already allocated sds string for the error message

Returns

true on success, else false

mympd_client_playlist_crop()

bool mympd_client_playlist_crop	(	struct t_partition_state *	partition_state,
		const char *	plist,
		unsigned	num_entries
	)

Crops a playlist

Parameters

partition_state	Pointer to partition specific states
plist	Playlist name
num_entries	May number of songs

Returns

true on success, else false

mympd_client_playlist_dedup()

int64_t mympd_client_playlist_dedup	(	struct t_partition_state *	partition_state,
		const char *	playlist,
		bool	remove,
		sds *	error
	)

Deduplicates the playlist content

Parameters

partition_state	pointer to partition state
playlist	playlist to check
remove	true = remove duplicate songs, else count duplicate songs
error	pointer to an already allocated sds string for the error message

Returns

-1 on error, else number of duplicate songs

mympd_client_playlist_dedup_all()

int64_t mympd_client_playlist_dedup_all	(	struct t_partition_state *	partition_state,
		bool	remove,
		sds *	error
	)

Deduplicates all static playlists

Parameters

partition_state	pointer to partition state
remove	true = remove duplicate songs, else count duplicate songs
error	pointer to an already allocated sds string for the error message

Returns

-1 on error, else number of removed songs

mympd_client_playlist_get()

bool mympd_client_playlist_get	(	struct t_partition_state *	partition_state,
		const char *	plist,
		bool	reverse,
		struct t_list *	l,
		sds *	error
	)

Gets the contents of a playlist. Uses the range feature for MPD 0.24+

Parameters

partition_state	Pointer to partition specific states
plist	Playlist name
reverse	List in reverse order?
l	Already allocated list
error	Pointer to an already allocated sds string for the error message

Returns

true on success, else false

mympd_client_playlist_shuffle()

bool mympd_client_playlist_shuffle	(	struct t_partition_state *	partition_state,
		const char *	playlist,
		sds *	error
	)

Shuffles a playlist

Parameters

partition_state	pointer to partition specific states
playlist	playlist to shuffle
error	pointer to an already allocated sds string for the error message

Returns

true on success else false

mympd_client_playlist_sort()

bool mympd_client_playlist_sort	(	struct t_partition_state *	partition_state,
		const char *	playlist,
		const char *	tagstr,
		bool	sortdesc,
		sds *	error
	)

Sorts a playlist. Wrapper for playlist_sort that enables the mympd tags afterwards

Parameters

partition_state	pointer to partition specific states
playlist	playlist to shuffle
tagstr	mpd tag to sort by
sortdesc	sort descending?
error	pointer to an already allocated sds string for the error message

Returns

true on success else false

mympd_client_playlist_validate()

int mympd_client_playlist_validate	(	struct t_partition_state *	partition_state,
		const char *	playlist,
		bool	remove,
		sds *	error
	)

Validates the playlist entries

Parameters

partition_state	pointer to partition state
playlist	playlist to check
remove	true = remove invalid songs, else count invalid songs
error	pointer to an already allocated sds string for the error message

Returns

-1 on error, else number of removed songs

mympd_client_playlist_validate_all()

int mympd_client_playlist_validate_all	(	struct t_partition_state *	partition_state,
		bool	remove,
		sds *	error
	)

Validates all entries from all static playlists

Parameters

partition_state	pointer to partition state
remove	true = remove invalid songs, else count invalid songs
error	pointer to an already allocated sds string for the error message

Returns

-1 on error, else number of removed songs

mympd_send_list_playlist_range()

bool mympd_send_list_playlist_range	(	struct t_partition_state *	partition_state,
		const char *	plist,
		unsigned	start,
		unsigned	end
	)

Wrapper for mpd_send_list_playlist_range that falls back to mpd_send_list_playlist if not supported by MPD.

Parameters

partition_state	Pointer to partition specific states
plist	Playlist name
start	Start position (including)
end	End position (excluding)

Returns

true on success, else false

mympd_send_list_playlist_range_meta()

bool mympd_send_list_playlist_range_meta	(	struct t_partition_state *	partition_state,
		const char *	plist,
		unsigned	start,
		unsigned	end
	)

Wrapper for mpd_send_list_playlist_range_meta that falls back to mpd_send_list_playlist_meta if not supported by MPD.

Parameters

partition_state	Pointer to partition specific states
plist	Playlist name
start	Start position (including)
end	End position (excluding)

Returns

true on success, else false

mympd_worker_playlist_content_enumerate_manual()

static bool mympd_worker_playlist_content_enumerate_manual ( struct t_partition_state *  partition_state, const char *  plist, unsigned *  count, unsigned *  duration, sds *  error  )

static

Enumerates the playlist and returns the count and total length. For MPD versions < 0.24. This functions retrieves the complete playlist.

Parameters

partition_state	pointer to partition state
plist	playlist name to enumerate
count	pointer to unsigned for entity count
duration	pointer to unsigned for total playtime
error	pointer to an already allocated sds string for the error message

Returns

pointer to buffer

mympd_worker_playlist_content_enumerate_mpd()

static bool mympd_worker_playlist_content_enumerate_mpd ( struct t_partition_state *  partition_state, const char *  plist, unsigned *  count, unsigned *  duration, sds *  error  )

static

Enumerates the playlist and returns the count and total length This functions uses the playlistlength command of MPD 0.24

Parameters

partition_state	pointer to partition state
plist	playlist name to enumerate
count	pointer to unsigned for entity count
duration	pointer to unsigned for total playtime
error	pointer to an already allocated sds string for the error message

Returns

pointer to buffer

playlist_parse_sort()

enum playlist_sort_types playlist_parse_sort

(

const char *

str

)

Parses the provided string to the playlist_sort_type

Parameters

str	String to parse

Returns

enum playlist_sort_types or PLSORT_UNKNOWN on error

playlist_sort()

static bool playlist_sort ( struct t_partition_state *  partition_state, const char *  playlist, const char *  tagstr, bool  sortdesc, sds *  error  )

static

Private definitions

Private functions Sorts a playlist.

Parameters

partition_state	pointer to partition specific states
playlist	playlist to shuffle
tagstr	mpd tag to sort by
sortdesc	sort descending?
error	pointer to an already allocated sds string for the error message

Returns

true on success else false

replace_playlist()

static bool replace_playlist ( struct t_partition_state *  partition_state, const char *  new_pl, const char *  to_replace_pl, sds *  error  )

static

Safely replaces a playlist with a new one

Parameters

partition_state	pointer to partition specific states
new_pl	name of the new playlist to bring in place
to_replace_pl	name of the playlist to replace
error	pointer to an already allocated sds string for the error message

Returns

true on success, else false

song_exists()

static bool song_exists ( struct t_partition_state *  partition_state, const char *  uri  )

static

Checks for a song in the database

Parameters

partition_state	Pointer to partition state
uri	Song uri to check

Returns

true on success or uri is a stream, else false