/* $Id: gii.h,v 1.18 2005/09/03 18:16:24 soyt Exp $ ****************************************************************************** LibGII internals Copyright (C) 1998 Andreas Beck [becka@ggi-project.org] Copyright (C) 1999 Marcus Sundberg [marcus@ggi-project.org] Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ****************************************************************************** */ #ifndef _GGI_INTERNAL_GII_H #define _GGI_INTERNAL_GII_H #define _INTERNAL_LIBGII #include #include #include typedef struct gii_input *gii_input_t; #include #include /* Default symbol form libgii modules */ #define GII_DLINIT_SYM "GIIdlinit" #define GII_MAXSUBLIBS 256 #define GII_SUBLIBMASK 0x000000ff #define GII_MAINMASK 0xffffff00 __BEGIN_DECLS /* Exported variables */ GIIAPIVAR int _gii_threadsafe; GIIAPIVAR void *_gii_global_lock; /* Global variables */ extern void *_giiconfhandle; extern void *_gii_safe_lock; extern void *_gii_event_lock; __END_DECLS /* Function types */ typedef int (giifunc_handler)(struct gii_input *inp, gii_event *event); typedef gii_event_mask (giifunc_eventpoll)(struct gii_input *inp, void *arg); typedef int (giifunc_sendevent)(struct gii_input *inp, gii_event *event); typedef int (giifunc_seteventmask)(struct gii_input *inp, gii_event_mask evm); typedef gii_event_mask (giifunc_geteventmask)(struct gii_input *inp); typedef int (giifunc_getselectfdset)(struct gii_input *inp, fd_set *readfds); typedef int (giifunc_inputclose)(struct gii_input *inp); typedef int (giifunc_inputinit)(struct gii_input *inp, const char *args, void *argptr, const char *target); /* Deviceinfo */ typedef struct gii_deviceinfo { GG_SLIST_ENTRY(gii_deviceinfo) devlist; /* For multi-device libs */ uint32_t origin; /* Multi-device libs */ gii_cmddata_getdevinfo *dev; /* Info about device */ gii_cmddata_getvalinfo *val; /* Array of valuator info */ } gii_deviceinfo; /* Cache data for an entire chain of inputsources */ typedef struct { int count; /* Usage count */ int maxfd; fd_set fdset; gii_event_mask eventmask, inputcan; uint32_t flags; int havesafe; int haveasync; int asyncpipes[2]; /* Write one byte to interrupt giiEventPoll() */ } gii_inputchain_cache; typedef struct gii_input { unsigned int version; void *mutex; /* Lock when changing FIXME! */ struct gii_input *next,*prev; /* Ring structure */ struct gii_dlhandle *dlhand; /* for closing */ uint32_t origin; int maxfd; fd_set fdset; gii_event_mask curreventmask, targetcan; uint32_t flags; struct gii_ev_queue_set *queue; struct gii_ev_queue *safequeue; giifunc_eventpoll *GIIeventpoll; giifunc_sendevent *GIIsendevent; giifunc_seteventmask *GIIseteventmask; giifunc_geteventmask *GIIgeteventmask; giifunc_getselectfdset *GIIgetselectfdset; giifunc_handler *GIIhandler; giifunc_inputclose *GIIclose; void *priv; gii_inputchain_cache *cache; GG_SLIST_HEAD(devinfo, gii_deviceinfo) devinfo; } gii_input; #define GII_FLAGS_HASPOLLED 0x00000001 #define GII_QUEUE_SIZE 8192 #define GII_Q_THRESHOLD (GII_QUEUE_SIZE - (int)sizeof(gii_event) - 1) /* The threshold the point where events wrap back to the start of the * buffer. Events are stored in the buffer in whole; they do not get * split in half at the end of the buffer. Instead, the event that * crosses the threshold will physically be the last, and the next event * has offset 0 in the buffer. * * Corollary: head is always <= Q_THRESHOLD. */ typedef struct gii_ev_queue { int count; /* number of events in the buffer */ int head; /* offset into buf[] where next event is put */ int tail; /* offset into buf[] of last event */ uint8_t buf[GII_QUEUE_SIZE]; } gii_ev_queue; typedef struct gii_ev_queue_set { gii_event_mask seen; gii_ev_queue *queues[evLast]; void *mutex; } gii_ev_queue_set; typedef struct gii_dlhandle { void *handle; void *identifier; /* For access to all other funcs. */ void *init; /* Init functions */ } gii_dlhandle; /* Internal API calls */ __BEGIN_DECLS gii_dlhandle *_giiLoadDL(const char *name); int _giiCloseDL(gii_dlhandle *hand); GIIAPIFUNC void _giiEventBlank(gii_event *ev, size_t size); GIIAPIFUNC int _giiEvQueueAdd(gii_input *inp, gii_event *ev); int _giiStdSendDevInfo(gii_input *inp, gii_cmddata_getdevinfo *data); int _giiStdSendValEvent(gii_input *inp, gii_cmddata_getvalinfo *vi, int val, int maxval); gii_event_mask _giiPollall(gii_input *inp, gii_event_mask mask, void *arg); gii_inputchain_cache *_giiCacheAlloc(void); void _giiCacheFree(gii_inputchain_cache *cache); GIIAPIFUNC void _giiUpdateCache(gii_input *inp); GIIAPIFUNC int _giiSafeAdd(struct gii_input *inp, gii_event *ev); int _giiSafeMove(struct gii_input *toinp, struct gii_input *frominp); void _giiAsyncNotify(gii_input *inp); GIIAPIFUNC uint32_t _giiRegisterDevice(gii_input *inp, gii_cmddata_getdevinfo *dev, gii_cmddata_getvalinfo *val); int _giiUnregisterDevice(gii_input *inp, uint32_t origin); __END_DECLS #endif /* _GGI_INTERNAL_GII_H */