Re: [Libvisual-devel] Changes in libvisual

[Vitaly V. B. <vit...@us...>]

> Vitaly, how is the display lib stuff and the new plugin framework stuff 
> going ?
Not much, sorry.

Is it OK to do smth like this?

I also tried to eliminate repeating entries in a structs.

==============================
#ifndef VO_PLUGIN
#define VO_PLUGIN

typedef enum {
	VISUAL_PLUGIN_TYPE_NULL,
	VISUAL_PLUGIN_TYPE_ACTOR,
	VISUAL_PLUGIN_TYPE_INPUT,
	VISUAL_PLUGIN_TYPE_MORPH,

} VisPluginType;

typedef _VisPluginInfo VisPluginInfo;
typedef _VisPluginData VisPluginData;
typedef _VisPluginRef VisPluginRef;

struct _VisPluginRef {
	char		*file;
	void		*handle;
	VisPluginType	 type;
	VisPluginInfo	*info;
	int		 usecount;

};

struct _VisPluginData {
	VisPluginRef	*ref;

	VisEventQueue	 eventqueue;
	void		*priv;

	union { /* only pointers here! */
		void *genericplugin;
		VisActorPlugin *actorplugin;
		VisInputPlugin *inputplugin;
		VisMorphPlugin *morphplugin;
	} plugin;
};

struct _VisPluginInfo {
	uint32_t struct_size;
	uint32_t api_version;
	VisPluginType plugin_type;

	const char *name;
	const char *author;
	const char *version;
	const char *about;
	const char *help;

	/* VisPluginData* will be allocated by Libvisual.
	 * Plugin only needs to init priv, if necessary.
	 */
	int (*init)(VisPluginData*);
	int (*cleanup)(VisPluginData*);

	union {
		struct {
			int (*x)();
		} actor;

		struct {
			int (*x)();
		} input;

		struct {
			int (*x)();
		} morph;
	} preferences;

};

/*
// count defaults to 1

const VisPluginInfo *get_plugin_info(int *count)
{
	const VisPluginInfo info[] = {
		/ * blah-blah-blah * /
	};
	*count = sizeof(info)/sizeof(*info);
	return info;
}
*/

#endif
========================

So, one library can provide more than only one plugin interface :)

-- 
Regards,
Vitaly
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