[ViewVC] Diff of: cvs/deliantra/server/socket/image.C

Comparing deliantra/server/socket/image.C (file contents):
Revision 1.30 by root, Wed Mar 14 01:19:10 2007 UTC vs.
Revision 1.62 by root, Sun Nov 15 18:04:00 2009 UTC

…		…
1	/*	1	/*
2	* CrossFire, A Multiplayer game	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	*	3	*
4	* Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team	4	* Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5	* Copyright (C) 2001 Mark Wedel	5	* Copyright (©) 2001,2007 Mark Wedel
6	* Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (©) 1992,2007 Frank Tore Johansen
7	*	7	*
8	* This program is free software; you can redistribute it and/or modify	8	* Deliantra is free software: you can redistribute it and/or modify it under
9	* it under the terms of the GNU General Public License as published by	9	* the terms of the Affero GNU General Public License as published by the
10	* the Free Software Foundation; either version 2 of the License, or	10	* Free Software Foundation, either version 3 of the License, or (at your
11	* (at your option) any later version.	11	* option) any later version.
12	*	12	*
13	* This program is distributed in the hope that it will be useful,	13	* This program is distributed in the hope that it will be useful,
14	* but WITHOUT ANY WARRANTY; without even the implied warranty of	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16	* GNU General Public License for more details.	16	* GNU General Public License for more details.
17	*	17	*
18	* You should have received a copy of the GNU General Public License	18	* You should have received a copy of the Affero GNU General Public License
19	* along with this program; if not, write to the Free Software	19	* and the GNU General Public License along with this program. If not, see
20	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	* <http://www.gnu.org/licenses/>.
21	*	21	*
22	* The author can be reached via e-mail to <crossfire@schmorp.de>	22	* The authors can be reached via e-mail to <support@deliantra.net>
23	*/	23	*/
24		24
25	/** \file	25	/** \file
26	* Image related communication	26	* Image related communication
27	*	27	*
36	#include <global.h>	36	#include <global.h>
37	#include <sproto.h>	37	#include <sproto.h>
38		38
39	#include "crc.h"	39	#include "crc.h"
40		40
41	#define MAX_FACE_SETS 20 /*< Maximum number of image sets the program will handle /	41	#define MAX_IMAGE_SIZE 10000
42
43	/** Information about one image */
44	typedef struct FaceInfo
45	{
46	uint8 data; /< image data /
47	uint16 datalen; /*< length of the xpm data /
48	uint32 checksum; /*< Checksum of face data /
49	} FaceInfo;
50
51	/** Information about one face set */
52	typedef struct
53	{
54	char prefix; /< /
55	char *fullname;
56
57	uint8 fallback; /*< faceset to use when an image is not found in this faceset /
58	char *size;
59	char *extension;
60	char *comment;
61
62	FaceInfo faces; /< images in this faceset /
63	} FaceSets;
64
65	static FaceSets facesets[MAX_FACE_SETS]; /*< All facesets /
66		42
67	/**	43	/**
68	* Checks specified faceset is valid	44	* client requested an image. send it rate-limited
69	* \param fsn faceset number	45	* before flushing.
70	*/	46	*/
71	int
72	is_valid_faceset (int fsn)
73	{
74	if (fsn >= 0 && fsn < MAX_FACE_SETS && facesets[fsn].prefix)
75	return TRUE;
76	return FALSE;
77	}
78
79	/**
80	* Frees all faceset information
81	*/
82	void	47	void
83	free_socket_images (void)	48	AskFaceCmd (char buf, int len, client ns)
84	{	49	{
85	int num, q;	50	int idx = 0, pri = 0;
86		51
87	for (num = 0; num < MAX_FACE_SETS; num++)	52	sscanf (buf, "%d %d", &idx, &pri);
		53
		54	//TODO: somehow fetch default priority from send_fx here
		55
		56	const facedata *d = face_data (idx, ns->faceset);
		57
		58	if (!d)
		59	return; // doh
		60
		61	client::ixsend ix;
		62
		63	ix.pri = pri;
		64	ix.idx = idx;
		65	ix.ofs = d->data.size ();
		66
		67	auto (pos, ns->ixface.end ());
		68
		69	// the by far most common case will be to insert
		70	// near the end, so little looping.
		71	while (pos != ns->ixface.begin ())
88	{	72	{
89	if (facesets[num].prefix)	73	--pos;
		74
		75	// sort within 2k bins, to slightly prefer smaller images
		76	if (pri > pos->pri \|\| (pri == pos->pri && (ix.ofs >> 11) <= (pos->ofs >> 11)))
90	{	77	{
91	for (q = 0; q < faces.size (); q++)	78	++pos;
92	if (facesets[num].faces[q].data)	79	break;
93	free (facesets[num].faces[q].data);
94
95	free (facesets[num].prefix);
96	free (facesets[num].fullname);
97	free (facesets[num].size);
98	free (facesets[num].extension);
99	free (facesets[num].comment);
100	free (facesets[num].faces);
101	}	80	}
102	}	81	}
103	}
104		82
105	/**	83	ns->ixface.insert (pos, ix);
106	* This returns the set we will actually use when sending
107	* a face. This is used because the image files may be sparse.
108	* This function is recursive. imageno is the face number we are
109	* trying to send
110	*
111	* If face is not found in specified faceset, tries with 'fallback' faceset.
112	*
113	* \param faceset faceset to check
114	* \param imageno image number
115	*
116	*/
117	static int
118	get_face_fallback (int faceset, int imageno)
119	{
120	/* faceset 0 is supposed to have every image, so just return. Doing
121	* so also prevents infinite loops in the case if it not having
122	* the face, but in that case, we are likely to crash when we try
123	* to access the data, but that is probably preferable to an infinite
124	* loop.
125	*/
126	if (faceset == 0)
127	return 0;
128		84
129	if (!facesets[faceset].prefix)	85	#if 0
130	{	86	for (auto (i, ns->ixface.begin ()); i != ns->ixface.end (); ++i)
131	LOG (llevError, "get_face_fallback called with unused set (%d)?\n", faceset);	87	fprintf (stderr, "<%d,%d> ", i->pri, i->ofs);
132	return 0; /* use default set */	88	fprintf (stderr, "\n");
133	}	89	#endif
134
135	if (facesets[faceset].faces[imageno].data)
136	return faceset;
137
138	return get_face_fallback (facesets[faceset].fallback, imageno);
139	}
140
141	/**
142	* Checks fallback are correctly defined.
143	* This is a simple recursive function that makes sure the fallbacks
144	* are all proper (eg, the fall back to defined sets, and also
145	* eventually fall back to 0). At the top level, togo is set to MAX_FACE_SETS,
146	* if togo gets to zero, it means we have a loop.
147	* This is only run when we first load the facesets.
148	*/
149	static void
150	check_faceset_fallback (int faceset, int togo)
151	{
152	int fallback = facesets[faceset].fallback;
153
154	/* proper case - falls back to base set */
155	if (fallback == 0)
156	return;
157
158	if (!facesets[fallback].prefix)
159	{
160	LOG (llevError, "Face set %d falls to non set faceset %d\n", faceset, fallback);
161	abort ();
162	}
163
164	togo--;
165	if (togo == 0)
166	{
167	LOG (llevError, "Infinite loop found in facesets. aborting.\n");
168	abort ();
169	}
170
171	check_faceset_fallback (fallback, togo);
172	}
173
174	#define MAX_IMAGE_SIZE 10000
175
176	/**
177	* Client tells us what type of faces it wants. Also sets
178	* the caching attribute.
179	*
180	*/
181	void
182	SetFaceMode (char buf, int len, client ns)
183	{
184	int mask = (atoi (buf) & CF_FACE_CACHE), mode = (atoi (buf) & ~CF_FACE_CACHE);
185
186	if (mode == CF_FACE_NONE)
187	ns->facecache = 1;
188	else if (mode != CF_FACE_PNG)
189	ns->send_packet_printf ("drawinfo %d %s", NDI_RED, "Warning - send unsupported face mode. Will use Png");
190
191	if (mask)
192	ns->facecache = 1;
193	}
194
195	/**
196	* Client has requested pixmap that it somehow missed getting.
197	* This will be called often if the client is
198	* caching images.
199	*/
200	void
201	SendFaceCmd (char buf, int len, client ns)
202	{
203	ns->send_face (atoi (buf), 1);
204	}
205
206	// how lame
207	static void print_facename (packet &sl, const facedata &d)
208	{
209	for (int i = 0; i < CHKSUM_SIZE; ++i)
210	sl.printf ("%02x", d.chksum [i]);
211	}
212
213	// gcfclient uses the server-provided checksum for comparison,
214	// but always wrotes a broken checksum to its cache file, so we
215	// have to provide gcfclient with a useless checksum just to
216	// have to cache the image despite its bugs.
217	static uint32 gcfclient_checksum (const facedata *d)
218	{
219	uint32 csum = 0;
220
221	for (std::string::const_iterator i = d->data.begin ();
222	i != d->data.end ();
223	++i)
224	{
225	csum = rotate_right (csum);
226	csum += (uint8 )&*i;
227	}
228
229	return csum;
230	}	90	}
231		91
232	/**	92	/**
233	* Sends a face to a client if they are in pixmap mode	93	* Sends a face to a client if they are in pixmap mode
234	* nothing gets sent in bitmap mode.	94	* nothing gets sent in bitmap mode.
…		…
236	* this is needed for the askface, in which we really do want to send the	96	* this is needed for the askface, in which we really do want to send the
237	* face (and askface is the only place that should be setting it). Otherwise,	97	* face (and askface is the only place that should be setting it). Otherwise,
238	* we look at the facecache, and if set, send the image name.	98	* we look at the facecache, and if set, send the image name.
239	*/	99	*/
240	void	100	void
241	client::send_face (faceidx facenum, bool forced)	101	client::send_face (faceidx facenum, int pri)
242	{	102	{
243	// never send face 0. ever. it does not exist.	103	// never send face 0. ever. it does not exist.
244	if (!facenum)	104	if (!facenum)
245	return;	105	return;
246		106
247	const facedata *d = face_data (facenum, faceset);	107	faceinfo *f = face_info (facenum);
248		108
249	if (!d)	109	if (!f)
250	{	110	{
251	LOG (llevError, "client::send_face (%d) out of bounds??\n", facenum);	111	LOG (llevError \| logBacktrace, "client::send_face (%d) out of bounds??\n", facenum);
252	return;	112	return;
253	}	113	}
254		114
255	packet sl;	115	// refuse to send non-image faces
		116	if (!fx_want [f->type])
		117	return;
256		118
257	if (facecache && !forced)
258	{
259	if (faces_sent[facenum])	119	if (faces_sent [facenum])
260	return;	120	return;
261		121
262	faces_sent[facenum] = true;	122	faces_sent[facenum] = true;
263		123
264	faceinfo *f = face_info (facenum);	124	fxface.push_back (facenum);
265	if (f->smooth && EMI_smooth)	125	}
		126
		127	void client::flush_fx ()
		128	{
		129	while (!fxface.empty ())
		130	{
		131	packet fx ("fx");
		132	packet sx ("sx");
		133	int type = 0;
		134
		135	do
266	{	136	{
		137	faceidx facenum = fxface.back (); fxface.pop_back ();
		138
		139	if (const faceinfo *f = face_info (facenum))
		140	{
		141	if (f->type != type)
		142	{
		143	type = f->type;
		144
		145	fx << ber32 (0)
		146	<< uint8 (1) << uint8 (type);
		147	}
		148
		149	const facedata *d = f->data (faceset);
		150
		151	fx << ber32 (facenum)
		152	<< data8 (d->chksum, d->chksum_len);
		153
		154	if (smoothing)
		155	{
		156	faceinfo *f = face_info (facenum);
		157
		158	if (f->smooth)
		159	{
267	send_face (f->smooth);	160	send_face (f->smooth, -110);
268		161
269	packet sl ("smooth");	162	sx << ber32 (facenum)
270		163	<< ber32 (f->smooth)
271	sl << uint16 (facenum)	164	<< ber32 (f->smoothlevel);
272	<< uint16 (f->smooth);	165	}
273		166	}
274	send_packet (sl);	167	}
275	}	168	}
		169	while (!fxface.empty ()
		170	&& fx.room () > ber32::size + CHKSUM_MAXLEN + 1 + 3 /* type switch */
		171	&& sx.room () > ber32::size * 3);
276		172
277	if (force_face0)
278	sl << "face " << uint16 (facenum);
279	else if (image2)
280	sl << "face2 " << uint16 (facenum) << uint8 (0) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0);
281	else
282	sl << "face1 " << uint16 (facenum) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0);
283
284	// how lame
285	print_facename (sl, *d);
286	}
287	else
288	{
289	sl << (image2 ? "image2 " : "image ")
290	<< uint32 (facenum);
291
292	if (image2)
293	sl << uint8 (0);
294
295	sl << uint32 (d->data.size ())
296	<< data (d->data.data (), d->data.size ());
297	}
298
299	send_packet (sl);	173	send_packet (fx);
		174	if (sx.length () > 3) send_packet (sx);
		175	}
300	}	176	}
301		177
302	// send all faces of this object to the client	178	// send all faces of this object to the client
303	// this uses more bandwidth initially, but makes	179	// this uses more bandwidth initially, but makes
304	// animations look much smoother, and every client	180	// animations look much smoother, and every client
305	// is supposed to do client-side caching anyways.	181	// is supposed to do client-side caching anyways.
306	void	182	void
307	client::send_faces (object *ob)	183	client::send_faces (object *ob)
308	{	184	{
309	send_face (ob->face);	185	send_face (ob->face, 10);
310		186
311	if (ob->animation_id)	187	if (ob->animation_id)
312	{	188	{
313	animation &anim = animations [ob->animation_id];	189	const animation &anim = ob->anim ();
314		190
315	for (int i = 0; i < anim.num_animations; i++)	191	for (int i = 0; i < anim.num_animations; i++)
316	send_face (anim.faces [i]);	192	send_face (anim.faces [i], -10);
317	}	193	}
318	}	194	}
319		195
320	/**	196	/**
321	* Need to send an animation sequence to the client.	197	* Need to send an animation sequence to the client.
…		…
326	*/	202	*/
327	void	203	void
328	client::send_animation (short anim_num)	204	client::send_animation (short anim_num)
329	{	205	{
330	/* Do some checking on the anim_num we got. Note that the animations	206	/* Do some checking on the anim_num we got. Note that the animations
331	* are added in contigous order, so if the number is in the valid	207	* are added in contiguous order, so if the number is in the valid
332	* range, it must be a valid animation.	208	* range, it must be a valid animation.
333	*/	209	*/
334	if (anim_num < 0 \|\| anim_num > num_animations)	210	if (anim_num < 0 \|\| anim_num >= animations.size ())
335	{	211	{
336	LOG (llevError, "esrv_send_anim (%d) out of bounds??\n", anim_num);	212	LOG (llevError, "esrv_send_anim (%d) out of bounds??\n", anim_num);
337	return;	213	return;
338	}	214	}
339		215
…		…
345	/* Build up the list of faces. Also, send any information (ie, the	221	/* Build up the list of faces. Also, send any information (ie, the
346	* the face itself) down to the client.	222	* the face itself) down to the client.
347	*/	223	*/
348	for (int i = 0; i < animations[anim_num].num_animations; i++)	224	for (int i = 0; i < animations[anim_num].num_animations; i++)
349	{	225	{
350	send_face (animations[anim_num].faces[i]);	226	send_face (animations[anim_num].faces[i], -20);
351	sl << uint16 (animations[anim_num].faces[i]); /* flags - not used right now */	227	sl << uint16 (animations[anim_num].faces[i]);
352	}	228	}
353		229
354	send_packet (sl);	230	send_packet (sl);
355		231
356	anims_sent[anim_num] = 1;	232	anims_sent[anim_num] = 1;
357	}	233	}
358		234
359	/**
360	* Sends the number of images, checksum of the face file,
361	* and the image_info file information. See the doc/Developers/protocol
362	* if you want further detail.
363	*/
364	void
365	send_image_info (client ns, char params)
366	{
367	packet sl;
368
369	//TODO: second parameter is a checksum, but it makes no sense in this current framework
370	sl.printf ("replyinfo image_info\n%d\n%u\n", MAX_FACES, 0);
371
372	sl << "0:base:standard:0:32x32:none:The old 32x32 faceset.\n";
373
374	ns->send_packet (sl);
375	}
376
377	/**
378	* Sends requested face information.
379	* \param ns socket to send to
380	* \param params contains first and last index of face
381	*
382	* For each image in [start..stop] sends
383	* - checksum
384	* - name
385	*/
386	void
387	send_image_sums (client ns, char params)
388	{
389	int start, stop;
390	char *cp;
391
392	packet sl;
393
394	start = atoi (params);
395	for (cp = params; *cp != '\0'; cp++)
396	if (*cp == ' ')
397	break;
398
399	stop = atoi (cp);
400	if (stop < start \|\| *cp == '\0' \|\| (stop - start) > 1000 \|\| stop >= MAX_FACES)
401	{
402	sl.printf ("replyinfo image_sums %d %d", start, stop);
403	ns->send_packet (sl);
404	sl.reset ();
405	return;
406	}
407
408	sl.printf ("replyinfo image_sums %d %d ", start, stop);
409
410	for (int i = start; i <= stop && i < faces.size (); i++)
411	{
412	ns->faces_sent[i] = true;
413
414	const facedata *d = face_data (i, ns->faceset);
415
416	if (sl.room () < 2 + 4 + 1 + d->data.size () + 1)
417	break;
418
419	sl << uint16 (i)
420	<< uint32 (0) // checksum
421	<< uint8 (ns->faceset);
422
423	print_facename (sl, *d); sl << uint8 (0);
424	}
425
426	/* It would make more sense to catch this pre-emptively in the code above.
427	* however, if this really happens, we probably just want to cut down the
428	* size to less than 1000, since that is what we claim the protocol would
429	* support.
430	*/
431	//TODO: taken care of above, should simply abort or make sure the above code is correct
432	if (sl.length () >= MAXSOCKBUF)
433	{
434	LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF);
435	abort ();
436	}
437
438	ns->send_packet (sl);
439	}
440

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Comparing deliantra/server/socket/image.C (file contents): Revision 1.30 by root, Wed Mar 14 01:19:10 2007 UTC vs. Revision 1.62 by root, Sun Nov 15 18:04:00 2009 UTC

Diff Legend

Comparing deliantra/server/socket/image.C (file contents):
Revision 1.30 by root, Wed Mar 14 01:19:10 2007 UTC vs.
Revision 1.62 by root, Sun Nov 15 18:04:00 2009 UTC