X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fplaylist%2Fsort.c;h=af238c0b7a9fc229f7fec85f49ad6321c973c3bf;hb=3540bb57899529f4224e20ba17a9d42b2d1ad12a;hp=92ef5e9422a6eee8b966376f2c9655ac7f296f6d;hpb=37c3eadcd507bc123f74379fcc28035691436b4b;p=vlc diff --git a/src/playlist/sort.c b/src/playlist/sort.c index 92ef5e9422..af238c0b7a 100644 --- a/src/playlist/sort.c +++ b/src/playlist/sort.c @@ -1,10 +1,12 @@ /***************************************************************************** * sort.c : Playlist sorting functions ***************************************************************************** - * Copyright (C) 1999-2001 VideoLAN - * $Id: sort.c,v 1.2 2003/11/26 10:45:21 zorglub Exp $ + * Copyright (C) 1999-2009 the VideoLAN team + * $Id$ * - * Authors: Clément Stenac + * Authors: Clément Stenac + * Ilkka Ollakka + * Rémi Duraffort * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -16,95 +18,340 @@ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/ -#include /* free(), strtol() */ -#include /* sprintf() */ -#include /* strerror() */ - -#include -#include -#include +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif +#include +#define VLC_INTERNAL_PLAYLIST_SORT_FUNCTIONS #include "vlc_playlist.h" +#include "playlist_internal.h" + +/* General comparison functions */ /** - * Sort the playlist - * \param p_playlist the playlist - * \param i_mode: SORT_TITLE, SORT_GROUP, SORT_AUTHOR, SORT_RANDOM - * \param i_type: SORT_NORMAL or SORT_REVERSE (reversed order) - * \return 0 on success + * Compare two items using their title or name + * @param first: the first item + * @param second: the second item + * @return -1, 0 or 1 like strcmp */ -int playlist_Sort( playlist_t * p_playlist , int i_mode, int i_type ) +static inline int meta_strcasecmp_title( const playlist_item_t *first, + const playlist_item_t *second ) { - int i , i_small , i_position; - playlist_item_t *p_temp; + int i_ret; + char *psz_first = input_item_GetTitleFbName( first->p_input ); + char *psz_second = input_item_GetTitleFbName( second->p_input ); - vlc_mutex_lock( &p_playlist->object_lock ); + if( psz_first && psz_second ) + i_ret = strcasecmp( psz_first, psz_second ); + else if( !psz_first && psz_second ) + i_ret = 1; + else if( psz_first && !psz_second ) + i_ret = -1; + else + i_ret = 0; + free( psz_first ); + free( psz_second ); - if( i_mode == SORT_RANDOM ) + return i_ret; +} + +/** + * Compare two intems accoring to the given meta type + * @param first: the first item + * @param second: the second item + * @param meta: the meta type to use to sort the items + * @param b_integer: true if the meta are integers + * @return -1, 0 or 1 like strcmp + */ +static inline int meta_sort( const playlist_item_t *first, + const playlist_item_t *second, + vlc_meta_type_t meta, bool b_integer ) +{ + int i_ret; + char *psz_first = input_item_GetMeta( first->p_input, meta ); + char *psz_second = input_item_GetMeta( second->p_input, meta ); + + /* Nodes go first */ + if( first->i_children == -1 && second->i_children >= 0 ) + i_ret = 1; + else if( first->i_children >= 0 && second->i_children == -1 ) + i_ret = -1; + /* Both are nodes, sort by name */ + else if( first->i_children >= 0 && second->i_children >= 0 ) + i_ret = meta_strcasecmp_title( first, second ); + /* Both are items */ + else if( !psz_first && psz_second ) + i_ret = 1; + else if( psz_first && !psz_second ) + i_ret = -1; + /* No meta, sort by name */ + else if( !psz_first && !psz_second ) + i_ret = meta_strcasecmp_title( first, second ); + else { - for( i_position = 0; i_position < p_playlist->i_size ; i_position ++ ) - { - int i_new = rand() % (p_playlist->i_size - 1); + if( b_integer ) + i_ret = atoi( psz_first ) - atoi( psz_second ); + else + i_ret = strcasecmp( psz_first, psz_second ); + } - /* Keep the correct current index */ - if( i_new == p_playlist->i_index ) - p_playlist->i_index = i_position; - else if( i_position == p_playlist->i_index ) - p_playlist->i_index = i_new; + free( psz_first ); + free( psz_second ); + return i_ret; +} - p_temp = p_playlist->pp_items[i_position]; - p_playlist->pp_items[i_position] = p_playlist->pp_items[i_new]; - p_playlist->pp_items[i_new] = p_temp; - } - vlc_mutex_unlock( &p_playlist->object_lock ); +/* Comparison functions */ - return 0; +/** + * Return the comparison function appropriate for the SORT_* and ORDER_* + * arguments given, or NULL for SORT_RANDOM. + * @param i_mode: a SORT_* enum indicating the field to sort on + * @param i_type: ORDER_NORMAL or ORDER_REVERSE + * @return function pointer, or NULL for SORT_RANDOM or invalid input + */ +typedef int (*sortfn_t)(const void *,const void *); +static const sortfn_t sorting_fns[NUM_SORT_FNS][2]; +static inline sortfn_t find_sorting_fn( unsigned i_mode, unsigned i_type ) +{ + if( i_mode>=NUM_SORT_FNS || i_type>1 ) + return 0; + return sorting_fns[i_mode][i_type]; +} + +/** + * Sort an array of items recursively + * @param i_items: number of items + * @param pp_items: the array of items + * @param p_sortfn: the sorting function + * @return nothing + */ +static inline +void playlist_ItemArraySort( unsigned i_items, playlist_item_t **pp_items, + sortfn_t p_sortfn ) +{ + if( p_sortfn ) + { + qsort( pp_items, i_items, sizeof( pp_items[0] ), p_sortfn ); } + else /* Randomise */ + { + unsigned i_position; + playlist_item_t *p_temp; + + for( i_position = 0; i_position < i_items ; i_position++ ) + { + int i_new; - for( i_position = 0; i_position < p_playlist->i_size -1 ; i_position ++ ) + if( i_items > 1 ) + i_new = rand() % (i_items - 1); + else + i_new = 0; + p_temp = pp_items[i_position]; + pp_items[i_position] = pp_items[i_new]; + pp_items[i_new] = p_temp; + } + } +} + + +/** + * Sort a node recursively. + * This function must be entered with the playlist lock ! + * @param p_playlist the playlist + * @param p_node the node to sort + * @param p_sortfn the sorting function + * @return VLC_SUCCESS on success + */ +static int recursiveNodeSort( playlist_t *p_playlist, playlist_item_t *p_node, + sortfn_t p_sortfn ) +{ + int i; + playlist_ItemArraySort(p_node->i_children,p_node->pp_children,p_sortfn); + for( i = 0 ; i< p_node->i_children; i++ ) { - i_small = i_position; - for( i = i_position + 1 ; i< p_playlist->i_size ; i++) + if( p_node->pp_children[i]->i_children != -1 ) { - int i_test = 0; - - if( i_mode == SORT_TITLE ) - { - i_test = strcasecmp( p_playlist->pp_items[i]->psz_name, - p_playlist->pp_items[i_small]->psz_name ); - } - else if( i_mode == SORT_GROUP ) - { - i_test = p_playlist->pp_items[i]->i_group - - p_playlist->pp_items[i_small]->i_group; - } - else if( i_mode == SORT_AUTHOR ) - { - i_test = strcasecmp( p_playlist->pp_items[i]->psz_author, - p_playlist->pp_items[i_small]->psz_author ); - } - - if( ( i_type == SORT_NORMAL && i_test < 0 ) || - ( i_type == SORT_REVERSE && i_test > 0 ) ) - { - i_small = i; - } + recursiveNodeSort( p_playlist, p_node->pp_children[i], p_sortfn ); } - /* Keep the correct current index */ - if( i_small == p_playlist->i_index ) - p_playlist->i_index = i_position; - else if( i_position == p_playlist->i_index ) - p_playlist->i_index = i_small; - - p_temp = p_playlist->pp_items[i_position]; - p_playlist->pp_items[i_position] = p_playlist->pp_items[i_small]; - p_playlist->pp_items[i_small] = p_temp; } - vlc_mutex_unlock( &p_playlist->object_lock ); + return VLC_SUCCESS; +} + +/** + * Sort a node recursively. + * + * This function must be entered with the playlist lock ! + * + * \param p_playlist the playlist + * \param p_node the node to sort + * \param i_mode: a SORT_* constant indicating the field to sort on + * \param i_type: ORDER_NORMAL or ORDER_REVERSE (reversed order) + * \return VLC_SUCCESS on success + */ +int playlist_RecursiveNodeSort( playlist_t *p_playlist, playlist_item_t *p_node, + int i_mode, int i_type ) +{ + /* Ask the playlist to reset as we are changing the order */ + pl_priv(p_playlist)->b_reset_currently_playing = true; + + /* Do the real job recursively */ + return recursiveNodeSort(p_playlist,p_node,find_sorting_fn(i_mode,i_type)); +} + + +/* This is the stuff the sorting functions are made of. The proto_## + * functions are wrapped in cmp_a_## and cmp_d_## functions that do + * void * to const playlist_item_t * casting and dereferencing and + * cmp_d_## inverts the result, too. proto_## are static inline, + * cmp_[ad]_## are merely static as they're the target of pointers. + * + * In any case, each SORT_## constant (except SORT_RANDOM) must have + * a matching SORTFN( )-declared function here. + */ + +#define SORTFN( SORT, first, second ) static inline int proto_##SORT \ + ( const playlist_item_t *first, const playlist_item_t *second ) + +SORTFN( SORT_ALBUM, first, second ) +{ + int i_ret = meta_sort( first, second, vlc_meta_Album, false ); + /* Items came from the same album: compare the track numbers */ + if( i_ret == 0 ) + i_ret = meta_sort( first, second, vlc_meta_TrackNumber, true ); - return 0; + return i_ret; } + +SORTFN( SORT_ARTIST, first, second ) +{ + int i_ret = meta_sort( first, second, vlc_meta_Artist, false ); + /* Items came from the same artist: compare the albums */ + if( i_ret == 0 ) + i_ret = proto_SORT_ALBUM( first, second ); + + return i_ret; +} + +SORTFN( SORT_DESCRIPTION, first, second ) +{ + return meta_sort( first, second, vlc_meta_Description, false ); +} + +SORTFN( SORT_DURATION, first, second ) +{ + return input_item_GetDuration( first->p_input ) - + input_item_GetDuration( second->p_input ); +} + +SORTFN( SORT_GENRE, first, second ) +{ + return meta_sort( first, second, vlc_meta_Genre, false ); +} + +SORTFN( SORT_ID, first, second ) +{ + return first->i_id - second->i_id; +} + +SORTFN( SORT_RATING, first, second ) +{ + return meta_sort( first, second, vlc_meta_Rating, true ); +} + +SORTFN( SORT_TITLE, first, second ) +{ + return meta_strcasecmp_title( first, second ); +} + +SORTFN( SORT_TITLE_NODES_FIRST, first, second ) +{ + /* If first is a node but not second */ + if( first->i_children == -1 && second->i_children >= 0 ) + return -1; + /* If second is a node but not first */ + else if( first->i_children >= 0 && second->i_children == -1 ) + return 1; + /* Both are nodes or both are not nodes */ + else + return meta_strcasecmp_title( first, second ); +} + +SORTFN( SORT_TITLE_NUMERIC, first, second ) +{ + int i_ret; + char *psz_first = input_item_GetTitleFbName( first->p_input ); + char *psz_second = input_item_GetTitleFbName( second->p_input ); + + if( psz_first && psz_second ) + i_ret = atoi( psz_first ) - atoi( psz_second ); + else if( !psz_first && psz_second ) + i_ret = 1; + else if( psz_first && !psz_second ) + i_ret = -1; + else + i_ret = 0; + + free( psz_first ); + free( psz_second ); + return i_ret; +} + +SORTFN( SORT_TRACK_NUMBER, first, second ) +{ + return meta_sort( first, second, vlc_meta_TrackNumber, true ); +} + +SORTFN( SORT_URI, first, second ) +{ + int i_ret; + char *psz_first = input_item_GetURI( first->p_input ); + char *psz_second = input_item_GetURI( second->p_input ); + + if( psz_first && psz_second ) + i_ret = strcasecmp( psz_first, psz_second ); + else if( !psz_first && psz_second ) + i_ret = 1; + else if( psz_first && !psz_second ) + i_ret = -1; + else + i_ret = 0; + + free( psz_first ); + free( psz_second ); + return i_ret; +} + +#undef SORTFN + +/* Generate stubs around the proto_## sorting functions, ascending and + * descending both. Preprocessor magic up ahead. Brace yourself. + */ + +#ifndef VLC_DEFINE_SORT_FUNCTIONS +#error Where is VLC_DEFINE_SORT_FUNCTIONS? +#endif + +#define DEF( s ) \ + static int cmp_a_##s(const void *l,const void *r) \ + { return proto_##s(*(const playlist_item_t *const *)l, \ + *(const playlist_item_t *const *)r); } \ + static int cmp_d_##s(const void *l,const void *r) \ + { return -1*proto_##s(*(const playlist_item_t * const *)l, \ + *(const playlist_item_t * const *)r); } + + VLC_DEFINE_SORT_FUNCTIONS + +#undef DEF + +/* And populate an array with the addresses */ + +static const sortfn_t sorting_fns[NUM_SORT_FNS][2] = +#define DEF( a ) { cmp_a_##a, cmp_d_##a }, +{ VLC_DEFINE_SORT_FUNCTIONS }; +#undef DEF +