playlist.h

<VC++视频音频开发>一书的光盘资料。

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#ifndef PLAYLIST_H
#define PLAYLIST_H

#include <windows.h>



typedef struct playlist_item_s {

	char *filename;

} playlist_item_t;

typedef struct playlist_node_s {

	struct playlist_node_s *next;
	playlist_item_t         item;

} playlist_node_t;



class Playlist {

private:

	DWORD            itemCount;
	DWORD            current;
	playlist_node_t *playlist;

public:

	Playlist();
	~Playlist();

	void             Reset();

	void             AddItem(char *filename);
	void             RemoveItemAt(DWORD i);
	
	void             NextItem();
	void             PreviousItem();

	DWORD            GetItemCount();
	playlist_item_t *GetItemAt(DWORD i);

	DWORD            GetCurrentPosition();
	playlist_item_t *GetCurrentItem();
	void             SetCurrentPosition(DWORD pos);
};


#endif