mpv/playtree.h

#ifndef __PLAYTREE_H
#define __PLAYTREE_H

struct stream_st;
struct m_config;

#define PLAY_TREE_ITER_ERROR 0
#define PLAY_TREE_ITER_ENTRY 1
#define PLAY_TREE_ITER_NODE  2
#define PLAY_TREE_ITER_END 3

#define PLAY_TREE_ENTRY_NODE -1
#define PLAY_TREE_ENTRY_DVD 0
#define PLAY_TREE_ENTRY_VCD 1
#define PLAY_TREE_ENTRY_TV    2
#define PLAY_TREE_ENTRY_FILE  3

// Playtree flags
#define PLAY_TREE_RND  (1<<0)
// Playtree flags used by the iter
#define PLAY_TREE_RND_PLAYED  (1<<8)

// Iter mode
#define PLAY_TREE_ITER_NORMAL 0
#define PLAY_TREE_ITER_RND 1

typedef struct play_tree play_tree_t;
typedef struct play_tree_iter play_tree_iter_t;
typedef struct play_tree_param play_tree_param_t;


#if 0
typedef struct play_tree_info play_tree_info_t;
// TODO : a attrib,val pair system and not something hardcoded
struct play_tree_info {
  char* title;
  char* author;
  char* copyright;
  char* abstract;
  // Some more ??
}
#endif

struct play_tree_param {
  char* name;
  char* value;
};


struct play_tree {
  play_tree_t* parent;
  play_tree_t* child;
  play_tree_t* next;
  play_tree_t* prev;

  //play_tree_info_t info;
  play_tree_param_t* params;
  int loop;
  char** files;
  int entry_type;
  int flags;
};
  
struct play_tree_iter {
  play_tree_t* root; // Iter root tree
  play_tree_t* tree; // Current tree
  struct m_config* config; 
  int loop;  // Looping status
  int file;
  int num_files;
  int entry_pushed;
  int mode;
 
  int* status_stack; //  loop/valid stack to save/revert status when we go up/down
  int stack_size;  // status stack size
};

play_tree_t* 
play_tree_new(void);

// If childs is true free also the childs
void
play_tree_free(play_tree_t* pt, int childs);


void
play_tree_free_list(play_tree_t* pt, int childs);


// Childs
void
play_tree_set_child(play_tree_t* pt, play_tree_t* child);
// Or parent
void
play_tree_set_parent(play_tree_t* pt, play_tree_t* parent);


// Add at end
void
play_tree_append_entry(play_tree_t* pt, play_tree_t* entry);

// And on begining
void
play_tree_prepend_entry(play_tree_t* pt, play_tree_t* entry);

// Insert after
void
play_tree_insert_entry(play_tree_t* pt, play_tree_t* entry);

// Detach from the tree 
void
play_tree_remove(play_tree_t* pt, int free_it,int with_childs);


void
play_tree_add_file(play_tree_t* pt,char* file);

int
play_tree_remove_file(play_tree_t* pt,char* file);


// Val can be NULL
void
play_tree_set_param(play_tree_t* pt, char* name, char* val);

int
play_tree_unset_param(play_tree_t* pt, char* name);

// Set all paramter of source in dest
void
play_tree_set_params_from(play_tree_t* dest,play_tree_t* src);

/// Iterator

play_tree_iter_t*
play_tree_iter_new(play_tree_t* pt, struct m_config* config);

play_tree_iter_t*
play_tree_iter_new_copy(play_tree_iter_t* old);

void
play_tree_iter_free(play_tree_iter_t* iter);

// d is the direction : d > 0 == next , d < 0 == prev
// with_node : TRUE == stop on nodes with childs, FALSE == go directly to the next child

int 
play_tree_iter_step(play_tree_iter_t* iter, int d,int with_nodes);

int // Break a loop, etc
play_tree_iter_up_step(play_tree_iter_t* iter, int d,int with_nodes);

int // Enter a node child list
play_tree_iter_down_step(play_tree_iter_t* iter, int d,int with_nodes);

char*
play_tree_iter_get_file(play_tree_iter_t* iter, int d);

play_tree_t*
parse_playtree(struct stream_st *stream, int forced);

play_tree_t*
play_tree_cleanup(play_tree_t* pt);

play_tree_t*
parse_playlist_file(char* file);

// Highlevel API with pt-suffix to different from low-level API
// by Fabian Franz (mplayer@fabian-franz.de)

// Cleanups pt and creates a new iter
play_tree_iter_t* pt_iter_create(play_tree_t** pt, struct m_config* config);

// Frees the iter
void pt_iter_destroy(play_tree_iter_t** iter);

// Gets the next available file in the direction (d=-1 || d=+1)
char* pt_iter_get_file(play_tree_iter_t* iter, int d);

// Two Macros that implement forward and backward direction
#define pt_iter_get_next_file(iter) pt_iter_get_file(iter, 1)
#define pt_iter_get_prev_file(iter) pt_iter_get_file(iter, -1)

// Inserts entry into the playtree
void pt_iter_insert_entry(play_tree_iter_t* iter, play_tree_t* entry);

//Replaces current entry in playtree with entry
//by doing insert and remove
void pt_iter_replace_entry(play_tree_iter_t* iter, play_tree_t* entry);

// Adds a new file to the playtree, 
// if it is not valid it is created
void pt_add_file(play_tree_t** ppt, char* filename);

// Performs a convert to playtree-syntax, by concat path/file
// and performs pt_add_file
void pt_add_gui_file(play_tree_t** ppt, char* path, char* file);

//Two macros to use only the iter and not the other things
#define pt_iter_add_file(iter, filename) pt_add_file(&iter->tree, filename)
#define pt_iter_add_gui_file(iter, path, name) pt_add_gui_file(&iter->tree, path, name)

// Resets the iter and goes back to head
void pt_iter_goto_head(play_tree_iter_t* iter);

#endif