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#ifndef _AYEMU_vtxfile_h
#define _AYEMU_vtxfile_h
#include <stdio.h>
#include <stdint.h>
#include "ayemu_8912.h"
BEGIN_C_DECLS
/**
* \defgroup vtxfile Functions for extract data from vtx files
*/
/*@{*/
/** structure for VTX file format handler
* \internal
* It stores VTX file header and current state
* (open file pointer, extracted register data, etc).
*/
typedef struct
{
ayemu_chip_t chiptype; /**< Type of sound chip */
int stereo; /**< Type of stereo: ABC, BCA,... */
int loop; /**< song loop */
int chipFreq; /**< AY chip freq (1773400 for ZX) */
int playerFreq; /**< 50 Hz for ZX, 60 Hz for yamaha */
int year; /**< year song composed */
char *title; /**< song title */
char *author; /**< song author */
char *from; /**< song from */
char *tracker; /**< tracker */
char *comment; /**< comment */
int regdata_size; /**< size of unpacked data (need for unpack). */
unsigned char *regdata; /**< unpacked song data */
size_t frames; /**< number of AY data frames */
} ayemu_vtx_t;
/*! Load only header (song info) from vtx file.
* Purpose: read tags in play list.
*/
EXTERN ayemu_vtx_t * ayemu_vtx_header(const char *buf, size_t size);
/*! Load song (header and unpack data).
*
*/
EXTERN ayemu_vtx_t * ayemu_vtx_load(const char *buf, size_t size);
EXTERN void ayemu_vtx_getframe(const ayemu_vtx_t *vtx, size_t frame_n,
ayemu_ay_reg_frame_t regs);
/** Free all allocaded data and structure itself.
* You must call this for any ayemu_vtx_t pointer allocated by this lib
* by functions ayemu_vtx_header() and ayemu_vtx_load().
*/
EXTERN void ayemu_vtx_free(ayemu_vtx_t *vtx);
/*! Load song header from file.
* Helper (non-all platform) function
*/
EXTERN ayemu_vtx_t * ayemu_vtx_header_from_file(const char *filename);
/*! Load song header and data from file.
* Helper (non-all platform) function
*/
EXTERN ayemu_vtx_t * ayemu_vtx_load_from_file(const char *filename);
/*@}*/
END_C_DECLS
#endif
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