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rockbox/apps/playlist.h
William Wilgus 776ceae119 Playlist Viewer Fix FS#13197 
While playing a track the playlist viewer may not
have a big enough temporary buffer to load and display
'max_files_in_playlist' entries

This patch attempts to load as many entries as possible

If tracks were already playing (dynamic playlist or otherwise)
The original code only gave half the plugin buffer to a playlist
loaded from file

On some targets half the plugin buffer is not enough to load all entries…

Now we attempt to get as many entries possible while at least leaving a
small buffer (MAX_PATH) for the name buffer

Change-Id: Ic06eaabc4e2550f076d625957d6d073790852743
2020-05-20 18:41:58 +02:00

195 lines
8.4 KiB
C
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by wavey@wavey.org
*
* 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 the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef __PLAYLIST_H__
#define __PLAYLIST_H__
#include <stdbool.h>
#include "config.h"
#include "file.h"
#include "kernel.h"
#include "metadata.h"
#define PLAYLIST_ATTR_QUEUED 0x01
#define PLAYLIST_ATTR_INSERTED 0x02
#define PLAYLIST_ATTR_SKIPPED 0x04
#define PLAYLIST_MAX_CACHE 16
#define PLAYLIST_DISPLAY_COUNT 10
#define DEFAULT_DYNAMIC_PLAYLIST_NAME "/dynamic.m3u8"
enum playlist_command {
PLAYLIST_COMMAND_PLAYLIST,
PLAYLIST_COMMAND_ADD,
PLAYLIST_COMMAND_QUEUE,
PLAYLIST_COMMAND_DELETE,
PLAYLIST_COMMAND_SHUFFLE,
PLAYLIST_COMMAND_UNSHUFFLE,
PLAYLIST_COMMAND_RESET,
PLAYLIST_COMMAND_COMMENT
};
enum {
PLAYLIST_PREPEND = -1,
PLAYLIST_INSERT = -2,
PLAYLIST_INSERT_LAST = -3,
PLAYLIST_INSERT_FIRST = -4,
PLAYLIST_INSERT_SHUFFLED = -5,
PLAYLIST_REPLACE = -6,
PLAYLIST_INSERT_LAST_SHUFFLED = -7
};
enum {
PLAYLIST_DELETE_CURRENT = -1
};
struct playlist_control_cache {
enum playlist_command command;
int i1;
int i2;
const char* s1;
const char* s2;
void* data;
};
struct playlist_info
{
bool current; /* current playing playlist */
char filename[MAX_PATH]; /* path name of m3u playlist on disk */
char control_filename[MAX_PATH]; /* full path of control file */
bool utf8; /* playlist is in .m3u8 format */
int fd; /* descriptor of the open playlist file */
int control_fd; /* descriptor of the open control file */
bool control_created; /* has control file been created? */
int dirlen; /* Length of the path to the playlist file */
volatile unsigned long *indices; /* array of indices */
#ifdef HAVE_DIRCACHE
struct dircache_fileref *dcfrefs; /* Dircache entry shortcuts */
#endif
int max_playlist_size; /* Max number of files in playlist. Mirror of
global_settings.max_files_in_playlist */
bool in_ram; /* playlist stored in ram (dirplay) */
int buffer_handle; /* handle to the below buffer (-1 if non-buflib) */
volatile char *buffer;/* buffer for in-ram playlists */
int buffer_size; /* size of buffer */
int buffer_end_pos; /* last position where buffer was written */
int index; /* index of current playing track */
int first_index; /* index of first song in playlist */
int amount; /* number of tracks in the index */
int last_insert_pos; /* last position we inserted a track */
int seed; /* shuffle seed */
bool shuffle_modified; /* has playlist been shuffled with
inserted tracks? */
bool deleted; /* have any tracks been deleted? */
int num_inserted_tracks; /* number of tracks inserted */
bool started; /* has playlist been started? */
/* cache of playlist control commands waiting to be flushed to
to disk */
struct playlist_control_cache control_cache[PLAYLIST_MAX_CACHE];
int num_cached; /* number of cached entries */
bool pending_control_sync; /* control file needs to be synced */
struct mutex *control_mutex; /* mutex for control file access */
int last_shuffled_start; /* number of tracks when insert last
shuffled command start */
};
struct playlist_track_info
{
char filename[MAX_PATH]; /* path name of mp3 file */
int attr; /* playlist attributes for track */
int index; /* index of track in playlist */
int display_index; /* index of track for display */
};
/* Exported functions only for current playlist. */
void playlist_init(void) INIT_ATTR;
void playlist_shutdown(void);
int playlist_create(const char *dir, const char *file);
int playlist_resume(void);
int playlist_add(const char *filename);
int playlist_shuffle(int random_seed, int start_index);
unsigned int playlist_get_filename_crc32(struct playlist_info *playlist,
int index);
void playlist_resume_track(int start_index, unsigned int crc,
unsigned long elapsed, unsigned long offset);
void playlist_start(int start_index, unsigned long elapsed,
unsigned long offset);
bool playlist_check(int steps);
const char *playlist_peek(int steps, char* buf, size_t buf_size);
int playlist_next(int steps);
#if CONFIG_CODEC == SWCODEC
bool playlist_next_dir(int direction);
#endif
int playlist_get_resume_info(int *resume_index);
int playlist_update_resume_info(const struct mp3entry* id3);
int playlist_get_display_index(void);
int playlist_amount(void);
void playlist_set_last_shuffled_start(void);
struct playlist_info *playlist_get_current(void);
/* Exported functions for all playlists. Pass NULL for playlist_info
structure to work with current playlist. */
int playlist_create_ex(struct playlist_info* playlist,
const char* dir, const char* file,
void* index_buffer, int index_buffer_size,
void* temp_buffer, int temp_buffer_size);
int playlist_set_current(struct playlist_info* playlist);
void playlist_close(struct playlist_info* playlist);
void playlist_sync(struct playlist_info* playlist);
int playlist_insert_track(struct playlist_info* playlist, const char *filename,
int position, bool queue, bool sync);
int playlist_insert_directory(struct playlist_info* playlist,
const char *dirname, int position, bool queue,
bool recurse);
int playlist_insert_playlist(struct playlist_info* playlist, const char *filename,
int position, bool queue);
#if CONFIG_CODEC == SWCODEC
void playlist_skip_entry(struct playlist_info *playlist, int steps);
#endif
int playlist_delete(struct playlist_info* playlist, int index);
int playlist_move(struct playlist_info* playlist, int index, int new_index);
int playlist_randomise(struct playlist_info* playlist, unsigned int seed,
bool start_current);
int playlist_sort(struct playlist_info* playlist, bool start_current);
bool playlist_modified(const struct playlist_info* playlist);
int playlist_get_first_index(const struct playlist_info* playlist);
int playlist_get_seed(const struct playlist_info* playlist);
int playlist_amount_ex(const struct playlist_info* playlist);
char *playlist_name(const struct playlist_info* playlist, char *buf,
int buf_size);
char *playlist_get_name(const struct playlist_info* playlist, char *buf,
int buf_size);
size_t playlist_get_required_bufsz(struct playlist_info* playlist,
bool include_namebuf, int num_indices);
int playlist_get_track_info(struct playlist_info* playlist, int index,
struct playlist_track_info* info);
int playlist_save(struct playlist_info* playlist, char *filename,
void* temp_buffer, size_t temp_buffer_size);
int playlist_directory_tracksearch(const char* dirname, bool recurse,
int (*callback)(char*, void*),
void* context);
int playlist_remove_all_tracks(struct playlist_info *playlist);
#endif /* __PLAYLIST_H__ */
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