(native) Linux VST support from LinuxDSP

git-svn-id: svn://localhost/ardour2/branches/3.0@10101 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 176 insertions, 0 deletions

diff --git a/libs/ardour/ardour/vstfx.h b/libs/ardour/ardour/vstfx.h
new file mode 100755
index 0000000000..e59998dd99
--- /dev/null
+++ b/libs/ardour/ardour/vstfx.h
@@ -0,0 +1,176 @@
+#ifndef __vstfx_h__
+#define __vstfx_h__
+
+#include <setjmp.h>
+#include <signal.h>
+#include <pthread.h>
+#include <stdio.h>
+
+/******************************************************************************************/
+/*VSTFX - an engine to manage native linux VST plugins - derived from FST for Windows VSTs*/
+/******************************************************************************************/
+ 
+extern void (*vstfx_error_callback)(const char *msg);
+
+void vstfx_set_error_function (void (*func)(const char *));
+
+void  vstfx_error (const char *fmt, ...);
+
+/*We will use the vestige headers*/
+
+#define VESTIGE_HEADER
+
+#include <ardour/vestige/aeffectx.h>
+
+typedef struct _VSTFX VSTFX;
+typedef struct _VSTFXHandle VSTFXHandle;
+typedef struct _VSTFXInfo VSTFXInfo;
+typedef struct _VSTFXKey VSTFXKey;
+
+
+/*Struct to contain the info about a plugin*/
+
+struct _VSTFXInfo 
+{
+    char *name;
+    char *creator;
+    int UniqueID;
+    char *Category;
+    
+    int numInputs;
+    int numOutputs;
+    int numParams;
+
+    int wantMidi;
+    int wantEvents;
+    int hasEditor;
+    int canProcessReplacing;
+
+    /* i think we should save the parameter Info Stuff soon. */
+    // struct VstParameterInfo *infos;
+    char **ParamNames;
+    char **ParamLabels;
+};
+
+/*The AEffect which contains the info about a plugin instance*/
+
+typedef struct AEffect * (*main_entry_t)(audioMasterCallback);
+
+/*A handle used to identify a plugin to vstfx*/
+
+struct _VSTFXHandle
+{
+    void*    dll;
+    char*    name;
+    char*    nameptr; /* ptr returned from strdup() etc. */
+	
+    //struct AEffect* (*main_entry)(audioMasterCallback);
+    
+	main_entry_t main_entry;
+
+    int plugincnt;
+};
+
+/*No key forwarding enabled in vstfx at the moment - maybe
+not required*/
+
+
+struct _VSTFXKey
+{
+	/** virtual-key code, or 0 if this _VSTFXKey is a `character' key */
+	int special;
+	/** `character' key, or 0 if this _VSTFXKey is a virtual-key */
+	int character;
+};
+
+
+
+/*Structure used to describe the instance of VSTFX responsible for
+a particular plugin instance.  These are connected together in a 
+linked list*/
+
+struct _VSTFX 
+{
+    struct AEffect*    plugin;
+    int      	window;				/* The plugin's parent X11 XWindow */
+	int			plugin_ui_window;	/*The ID of the plugin UI window created by the plugin*/
+    int         xid;				/* X11 XWindow */
+	
+	int			want_resize;		/*Set to signal the plugin resized its UI*/
+	void*		extra_data;			/*Pointer to any extra data*/
+	
+	void* event_callback_thisptr;
+	void (*eventProc) (void* event);
+	
+    VSTFXHandle*  handle;
+	
+    int		width;
+    int 	height;
+    int		wantIdle;
+    int		destroy;
+    int		vst_version;
+	int 	has_editor;
+	
+	int		program_set_without_editor;
+
+    int		want_program;
+	int 	want_chunk;
+	int		n_pending_keys;
+unsigned char* wanted_chunk;
+	int 	wanted_chunk_size;
+    int		current_program;
+    float	*want_params;
+    float	*set_params;
+	
+	VSTFXKey	pending_keys[16];
+
+    int		dispatcher_wantcall;
+    int		dispatcher_opcode;
+    int		dispatcher_index;
+    int		dispatcher_val;
+    void *	dispatcher_ptr;
+    float	dispatcher_opt;
+    int		dispatcher_retval;
+
+    struct _VSTFX* next;
+    pthread_mutex_t lock;
+    pthread_cond_t  window_status_change;
+    pthread_cond_t  plugin_dispatcher_called;
+	pthread_cond_t	window_created;
+    int             been_activated;
+};
+
+/*API to vstfx*/
+
+extern int			vstfx_launch_editor(VSTFX* vstfx);
+
+extern int        	vstfx_init (void* possible_hmodule);
+extern void       	vstfx_exit ();
+
+extern VSTFXHandle* vstfx_load (const char*);
+extern int        	vstfx_unload (VSTFXHandle*);
+
+extern VSTFX*       vstfx_instantiate (VSTFXHandle*, audioMasterCallback amc, void* userptr);
+extern void       	vstfx_close (VSTFX*);
+
+extern int 			vstfx_create_editor (VSTFX* vstfx);
+extern int  		vstfx_run_editor (VSTFX*);
+extern void  		vstfx_destroy_editor (VSTFX*);
+extern int  		vstfx_get_XID (VSTFX*);
+extern void 		vstfx_move_window_into_view (VSTFX*);
+
+extern VSTFXInfo* 	vstfx_get_info (char *dllpathname);
+extern void 		vstfx_free_info (VSTFXInfo *info);
+extern void 		vstfx_event_loop_remove_plugin (VSTFX* fst);
+extern int 			vstfx_call_dispatcher(VSTFX *vstfx, int opcode, int index, int val, void *ptr, float opt );
+
+/** Load a plugin state from a file.**/
+
+extern int vstfx_load_state (VSTFX* vstfx, char * filename);
+
+/** Save a plugin state to a file.**/
+
+extern int vstfx_save_state (VSTFX* vstfx, char * filename);
+
+
+#endif /* __vstfx_h__ */