floppy: Refactor slightly. Name, descrition, etc are now an intrinsic property of converters. [O. Galibert]

src/emu/imagedev/floppy.c

@@ -57,19 +57,21 @@ void floppy_image_device::device_config_complete()
 	image_device_format **formatptr;
     image_device_format *format;
     formatptr = &m_formatlist;
-	int cnt = 0;
 	m_extension_list[0] = '\0';
-	while (m_formats[cnt].name)
+	m_fif_list = 0;
+	for(int cnt=0; m_formats[cnt]; cnt++)
 	{
 		// allocate a new format
+		floppy_image_format_t *fif = m_formats[cnt]();
+
 		format = global_alloc_clear(image_device_format);
 		format->m_index 	  = cnt;
-		format->m_name        = m_formats[cnt].name;
-		format->m_description = m_formats[cnt].description;
-		format->m_extensions  = m_formats[cnt].extensions;
-		format->m_optspec     = (m_formats[cnt].param_guidelines) ? m_formats[cnt].param_guidelines : "";
+		format->m_name        = fif->name();
+		format->m_description = fif->description();
+		format->m_extensions  = fif->extensions();
+		format->m_optspec     = "";
 
-		image_specify_extension( m_extension_list, 256, m_formats[cnt].extensions );
+		image_specify_extension( m_extension_list, 256, fif->extensions() );
 		// and append it to the list
 		*formatptr = format;
 		formatptr = &format->m_next;
@@ -116,10 +118,10 @@ bool floppy_image_device::call_load()
 	device_image_interface *image = this;
 	int best;
 	m_image = global_alloc(floppy_image((void *) image, &image_ioprocs, m_formats));
-	const struct floppy_format_def *format = m_image->identify(&best);
+	floppy_image_format_t *format = m_image->identify(&best);
 	m_dskchg = 0;
 	if (format) {
-		m_image->load(best);
+		format->load(m_image);
 		if (m_load_func)
 			return m_load_func(*this);
 	} else {

src/emu/imagedev/floppy.h

@@ -18,7 +18,7 @@ struct floppy_interface
 {
 	devcb_write_line				m_out_idx_cb;  /* index */
 
-	const struct floppy_format_def *m_formats;
+	const floppy_format_type 		*m_formats;
 	const char *					m_interface;
 	device_image_display_info_func	m_device_displayinfo;
 	device_image_load_func			m_load_func;
@@ -76,6 +76,7 @@ protected:
 	image_device_format m_format;
 	floppy_image		*m_image;
 	char				m_extension_list[256];
+	floppy_image_format_t *m_fif_list;
 
 	/* index pulse timer */
 	emu_timer	*m_index_timer;

src/lib/formats/ami_dsk.c

@@ -8,11 +8,30 @@
 
 #include "formats/ami_dsk.h"
 
-adf_format::adf_format(const char *name,const char *extensions,const char *description,const char *param_guidelines) :
-	floppy_image_format_t(name,extensions,description,param_guidelines)
+adf_format::adf_format() : floppy_image_format_t()
 {
 }
 
+const char *adf_format::name() const
+{
+	return "adf";
+}
+
+const char *adf_format::description() const
+{
+	return "Amiga ADF floppy disk image";
+}
+
+const char *adf_format::extensions() const
+{
+	return "adf";
+}
+
+bool adf_format::supports_save() const
+{
+	return false;
+}
+
 int adf_format::identify(floppy_image *image)
 {
 	UINT64 size = image->image_size();

src/lib/formats/ami_dsk.h

@@ -14,11 +14,16 @@
 class adf_format : public floppy_image_format_t
 {
 public:
-	adf_format(const char *name,const char *extensions,const char *description,const char *param_guidelines);
+	adf_format();
 
 	virtual int identify(floppy_image *image);
 	virtual bool load(floppy_image *image);
 
+	virtual const char *name() const;
+	virtual const char *description() const;
+	virtual const char *extensions() const;
+	virtual bool supports_save() const;
+
 	static const desc_e desc[];
 };
 

src/lib/formats/flopimg.c

@@ -941,16 +941,26 @@ LEGACY_FLOPPY_OPTIONS_END
 /// New implementation
 //////////////////////////////////////////////////////////
 
-floppy_image::floppy_image(void *fp, const struct io_procs *procs,const struct floppy_format_def *formats)
+floppy_image::floppy_image(void *fp, const struct io_procs *procs, const floppy_format_type *formats)
 {
 	m_io.file = fp;
 	m_io.procs = procs;
 	m_io.filler = 0xFF;
-	m_formats = formats;
+	m_formats = 0;
+	for(int i=0; formats[i]; i++)
+	{
+		floppy_image_format_t *fif = formats[i]();
+		if(m_formats)
+			m_formats->append(fif);
+		else
+			m_formats = fif;
+	}
 }
 
 floppy_image::~floppy_image()
 {
+	if(m_formats)
+		delete m_formats;
 	close();
 }
 
@@ -993,43 +1003,49 @@ void floppy_image::set_meta_data(UINT16 tracks, UINT8 sides, UINT16 rpm, UINT16
 	m_bitrate= bitrate;
 }
 
-const struct floppy_format_def *floppy_image::identify(int *best)
+floppy_image_format_t *floppy_image::identify(int *best)
 {
-	const struct floppy_format_def *retVal = NULL;
+	floppy_image_format_t *retVal = NULL;
 	int best_vote = 0;
 	*best = -1;
-	for (int i = 0; m_formats[i].type; i++)
+	int id = 0;
+	for(floppy_image_format_t *fif = m_formats; fif; fif = fif->next)
 	{
-		floppy_image_format_t *t = (m_formats[i].type)(m_formats[i].name,m_formats[i].extensions,m_formats[i].description,m_formats[i].param_guidelines);
-		int vote = t->identify(this);
+		int vote = fif->identify(this);
 		/* is this option a better one? */
 		if (vote > best_vote)
 		{
 			best_vote = vote;
-			*best = i;
-			retVal = &m_formats[i];
+			*best = id;
+			retVal = fif;
 		}
+		id++;
 	}
 	return retVal;
 }
 
-bool floppy_image::load(int num)
+floppy_image_format_t::floppy_image_format_t()
 {
-	floppy_image_format_t *t = (m_formats[num].type)(m_formats[num].name,m_formats[num].extensions,m_formats[num].description,m_formats[num].param_guidelines);
-	return t->load(this);
+	next = 0;
 }
 
-floppy_image_format_t::floppy_image_format_t(const char *name,const char *extensions,const char *description,const char *param_guidelines)
-{
-	m_name = name;
-	m_extensions = extensions;
-	m_description = description;
-	m_param_guidelines = param_guidelines;
-}
 floppy_image_format_t::~floppy_image_format_t()
 {
 }
 
+void floppy_image_format_t::append(floppy_image_format_t *_next)
+{
+	if(next)
+		next->append(_next);
+	else
+		next = _next;
+}
+
+bool floppy_image_format_t::save(floppy_image *)
+{
+	return false;
+}
+
 bool floppy_image_format_t::type_no_data(int type) const
 {
 	return type == CRC_CCITT_START ||

src/lib/formats/flopimg.h

@@ -222,11 +222,21 @@ class floppy_image;
 class floppy_image_format_t
 {
 public:
-	floppy_image_format_t(const char *name,const char *extensions,const char *description,const char *param_guidelines);
+	floppy_image_format_t();
 	virtual ~floppy_image_format_t();
 
 	virtual int identify(floppy_image *image) = 0;
 	virtual bool load(floppy_image *image) = 0;
+	virtual bool save(floppy_image *image);
+
+	virtual const char *name() const = 0;
+	virtual const char *description() const = 0;
+	virtual const char *extensions() const = 0;
+	virtual bool supports_save() const = 0;
+
+	floppy_image_format_t *next;
+	void append(floppy_image_format_t *_next);
+		
 protected:
 	// Struct designed for easy track data description
 	// Optional, you can always do things by hand, but useful nevertheless
@@ -257,7 +267,7 @@ protected:
 		SECTOR_DATA_O,     // Sector data to mfm-encode, odd bits only, which in p1, -1 for the current one per the sector id
 		SECTOR_DATA_E,     // Sector data to mfm-encode, even bits only, which in p1, -1 for the current one per the sector id
 
-		CRC_CCITT_START,   // Start a CCITT CRC calculation, with the usual x^16 + x^12 + x^5 + 1 (11021) polynomial, p1 = crc id, p2 = init value
+		CRC_CCITT_START,   // Start a CCITT CRC calculation, with the usual x^16 + x^12 + x^5 + 1 (11021) polynomial, p1 = crc id
 		CRC_AMIGA_START,   // Start an amiga checksum calculation, p1 = crc id
 		CRC_END,           // End the checksum, p1 = crc id
 		CRC,               // Write a checksum in the apporpriate format, p1 = crc id
@@ -279,11 +289,6 @@ protected:
 
 	void generate_track(const desc_e *desc, UINT8 track, UINT8 head, const desc_s *sect, int sect_count, int track_size, UINT8 *buffer);
 
-	const char *m_name;
-	const char *m_extensions;
-	const char *m_description;
-	const char *m_param_guidelines;
-
 private:
 	enum { CRC_NONE, CRC_AMIGA, CRC_CCITT };
 	enum { MAX_CRC_COUNT = 64 };
@@ -308,45 +313,16 @@ private:
 	void collect_crcs(const desc_e *desc, gen_crc_info *crcs);
 };
 
-
 // a device_type is simply a pointer to its alloc function
-typedef floppy_image_format_t *(*floppy_format_type)(const char *name,const char *extensions,const char *description,const char *param_guidelines);
+typedef floppy_image_format_t *(*floppy_format_type)();
 
 // this template function creates a stub which constructs a image format
 template<class _FormatClass>
-floppy_image_format_t *floppy_image_format_creator(const char *name,const char *extensions,const char *description,const char *param_guidelines)
+floppy_image_format_t *floppy_image_format_creator()
 {
-	return new _FormatClass(name, extensions, description, param_guidelines);
+	return new _FormatClass();
 }
 
-struct floppy_format_def
-{
-	const char *name;
-	const char *extensions;
-	const char *description;
-	const floppy_format_type type;
-	const char *param_guidelines;
-};
-
-#define FLOPPY_OPTIONS_NAME(name)	floppyoptions_##name
-
-#define FLOPPY_OPTIONS_START(name)												\
-	const struct floppy_format_def floppyoptions_##name[] =								\
-	{																			\
-
-#define FLOPPY_OPTIONS_END0 \
-		{ NULL, NULL, NULL, NULL, NULL }							\
-	};
-
-#define FLOPPY_OPTIONS_EXTERN(name)												\
-	extern const struct floppy_format_def floppyoptions_##name[]							\
-
-#define FLOPPY_OPTION(name, extensions_, description_, type_, ranges_)\
-	{ #name, extensions_, description_, type_, ranges_ },				\
-
-#define FLOPPY_OPTIONS_END													\
-	FLOPPY_OPTIONS_END0
-
 // ======================> floppy_image
 
 #define MAX_FLOPPY_SIDES   2
@@ -358,7 +334,7 @@ class floppy_image
 {
 public:
 	// construction/destruction
-	floppy_image(void *fp, const struct io_procs *procs,const struct floppy_format_def *formats);
+	floppy_image(void *fp, const struct io_procs *procs, const floppy_format_type *formats);
 	virtual ~floppy_image();
 
 	void image_read(void *buffer, UINT64 offset, size_t length);
@@ -369,15 +345,14 @@ public:
 
 	void set_meta_data(UINT16 tracks, UINT8 sides, UINT16 rpm, UINT16 bitrate);
 	void set_track_size(UINT16 track, UINT8 side, UINT16 size) { m_track_size[(track << 1) + side] = size; }
-	const struct floppy_format_def *identify(int *best);
+	floppy_image_format_t *identify(int *best);
 	UINT8* get_buffer(UINT16 track, UINT8 side) { return m_native_data[(track << 1) + side]; }
 	UINT16 get_track_size(UINT16 track, UINT8 side) { return m_track_size[(track << 1) + side]; }
-	bool load(int num);
 
 private:
 	void close_internal(bool close_file);
 	struct io_generic		m_io;
-	const struct floppy_format_def *m_formats;
+	floppy_image_format_t *m_formats;
 	UINT16 m_tracks;
 	UINT8  m_sides;
 	UINT16 m_rpm;

src/lib/formats/hxcmfm_dsk.c

@@ -28,11 +28,30 @@ struct MFMTRACKIMG
 
 #pragma pack()
 
-mfm_format::mfm_format(const char *name,const char *extensions,const char *description,const char *param_guidelines) :
-	floppy_image_format_t(name,extensions,description,param_guidelines)
+mfm_format::mfm_format() : floppy_image_format_t()
 {
 }
 
+const char *mfm_format::name() const
+{
+	return "mfm";
+}
+
+const char *mfm_format::description() const
+{
+	return "HxCFloppyEmulator floppy disk image";
+}
+
+const char *mfm_format::extensions() const
+{
+	return "mfm";
+}
+
+bool mfm_format::supports_save() const
+{
+	return false;
+}
+
 int mfm_format::identify(floppy_image *image)
 {
 	UINT8 header[7];

src/lib/formats/hxcmfm_dsk.h

@@ -14,10 +14,15 @@
 class mfm_format : public floppy_image_format_t
 {
 public:
-	mfm_format(const char *name,const char *extensions,const char *description,const char *param_guidelines);
+	mfm_format();
 
 	virtual int identify(floppy_image *image);
 	virtual bool load(floppy_image *image);
+
+	virtual const char *name() const;
+	virtual const char *description() const;
+	virtual const char *extensions() const;
+	virtual bool supports_save() const;
 };
 
 extern const floppy_format_type FLOPPY_MFM_FORMAT;

src/lib/formats/st_dsk.c

@@ -8,8 +8,7 @@
 
 #include "formats/st_dsk.h"
 
-st_gen_format::st_gen_format(const char *name,const char *extensions,const char *description,const char *param_guidelines) :
-	floppy_image_format_t(name,extensions,description,param_guidelines)
+st_gen_format::st_gen_format() : floppy_image_format_t()
 {
 }
 

src/lib/formats/st_dsk.h

@@ -14,7 +14,7 @@
 class st_gen_format : public floppy_image_format_t
 {
 public:
-	st_gen_format(const char *name,const char *extensions,const char *description,const char *param_guidelines);
+	st_gen_format();
 
 	static const desc_e desc_fcp_9[];