Bug Summary

File:XvMC.c
Location:line 504, column 5
Description:Value stored to 'magic' is never read

Annotated Source Code

1#ifdef HAVE_CONFIG_H1
2#include <config.h>
3#endif
4#include <stdio.h>
5#include "XvMClibint.h"
6#ifdef HAVE_SHMAT1
7#ifndef Lynx
8#include <sys/ipc.h>
9#include <sys/shm.h>
10#else
11#include <ipc.h>
12#include <shm.h>
13#endif /* Lynx */
14#endif /* HAVE_SHMAT */
15#include <unistd.h>
16#include <sys/time.h>
17#include <X11/extensions/Xext.h>
18#include <X11/extensions/extutil.h>
19
20static XExtensionInfo _xvmc_info_data;
21static XExtensionInfo *xvmc_info = &_xvmc_info_data;
22static const char *xvmc_extension_name = XvMCName"XVideo-MotionCompensation";
23
24static const char *xvmc_error_list[] =
25{
26 "BadContext",
27 "BadSurface",
28 "BadSubpicture"
29};
30
31static XEXT_GENERATE_CLOSE_DISPLAY (xvmc_close_display, xvmc_info)int xvmc_close_display (Display *dpy, XExtCodes *codes) { return
XextRemoveDisplay (xvmc_info, dpy); }
32
33
34static XEXT_GENERATE_ERROR_STRING (xvmc_error_string, xvmc_extension_name,char *xvmc_error_string (Display *dpy, int code, XExtCodes *codes
, char *buf, int n) { code -= codes->first_error; if (code
>= 0 && code < 3) { char tmp[256]; sprintf (tmp
, "%s.%d", xvmc_extension_name, code); XGetErrorDatabaseText (
dpy, "XProtoError", tmp, xvmc_error_list[code], buf, n); return
buf; } return (char *)0; }
35 XvMCNumErrors, xvmc_error_list)char *xvmc_error_string (Display *dpy, int code, XExtCodes *codes
, char *buf, int n) { code -= codes->first_error; if (code
>= 0 && code < 3) { char tmp[256]; sprintf (tmp
, "%s.%d", xvmc_extension_name, code); XGetErrorDatabaseText (
dpy, "XProtoError", tmp, xvmc_error_list[code], buf, n); return
buf; } return (char *)0; }
36
37
38static XExtensionHooks xvmc_extension_hooks = {
39 NULL((void*)0), /* create_gc */
40 NULL((void*)0), /* copy_gc */
41 NULL((void*)0), /* flush_gc */
42 NULL((void*)0), /* free_gc */
43 NULL((void*)0), /* create_font */
44 NULL((void*)0), /* free_font */
45 xvmc_close_display, /* close_display */
46 NULL((void*)0), /* wire_to_event */
47 NULL((void*)0), /* event_to_wire */
48 NULL((void*)0), /* error */
49 xvmc_error_string /* error_string */
50};
51
52static XEXT_GENERATE_FIND_DISPLAY (xvmc_find_display, xvmc_info,XExtDisplayInfo *xvmc_find_display (Display *dpy) { XExtDisplayInfo
*dpyinfo; if (!xvmc_info) { if (!(xvmc_info = XextCreateExtension
())) return ((void*)0); } if (!(dpyinfo = XextFindDisplay (xvmc_info
, dpy))) dpyinfo = XextAddDisplay (xvmc_info,dpy,xvmc_extension_name
,&xvmc_extension_hooks,0,((void*)0)); return dpyinfo; }
53 xvmc_extension_name,XExtDisplayInfo *xvmc_find_display (Display *dpy) { XExtDisplayInfo
*dpyinfo; if (!xvmc_info) { if (!(xvmc_info = XextCreateExtension
())) return ((void*)0); } if (!(dpyinfo = XextFindDisplay (xvmc_info
, dpy))) dpyinfo = XextAddDisplay (xvmc_info,dpy,xvmc_extension_name
,&xvmc_extension_hooks,0,((void*)0)); return dpyinfo; }
54 &xvmc_extension_hooks,XExtDisplayInfo *xvmc_find_display (Display *dpy) { XExtDisplayInfo
*dpyinfo; if (!xvmc_info) { if (!(xvmc_info = XextCreateExtension
())) return ((void*)0); } if (!(dpyinfo = XextFindDisplay (xvmc_info
, dpy))) dpyinfo = XextAddDisplay (xvmc_info,dpy,xvmc_extension_name
,&xvmc_extension_hooks,0,((void*)0)); return dpyinfo; }
55 XvMCNumEvents, NULL)XExtDisplayInfo *xvmc_find_display (Display *dpy) { XExtDisplayInfo
*dpyinfo; if (!xvmc_info) { if (!(xvmc_info = XextCreateExtension
())) return ((void*)0); } if (!(dpyinfo = XextFindDisplay (xvmc_info
, dpy))) dpyinfo = XextAddDisplay (xvmc_info,dpy,xvmc_extension_name
,&xvmc_extension_hooks,0,((void*)0)); return dpyinfo; }
56
57Boolint XvMCQueryExtension (Display *dpy, int *event_basep, int *error_basep)
58{
59 XExtDisplayInfo *info = xvmc_find_display(dpy);
60
61 if (XextHasExtension(info)((info) && ((info)->codes))) {
62 *event_basep = info->codes->first_event;
63 *error_basep = info->codes->first_error;
64 return True1;
65 } else {
66 return False0;
67 }
68}
69
70Statusint XvMCQueryVersion (Display *dpy, int *major, int *minor)
71{
72 XExtDisplayInfo *info = xvmc_find_display(dpy);
73 xvmcQueryVersionReply rep;
74 xvmcQueryVersionReq *req;
75
76 XvMCCheckExtension (dpy, info, BadImplementation)if (!((info) && ((info)->codes))) { XMissingExtension
(dpy, xvmc_extension_name); return 17; };
77
78 LockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->lock_display
)(dpy);
79 XvMCGetReq (QueryVersion, req)if ((dpy->bufptr + sizeof(xvmcQueryVersionReq)) > dpy->
bufmax) _XFlush(dpy); req = (xvmcQueryVersionReq *)(dpy->last_req
= dpy->bufptr); req->reqType = info->codes->major_opcode
; req->xvmcReqType = 0; req->length = sizeof(xvmcQueryVersionReq
)>>2; dpy->bufptr += sizeof(xvmcQueryVersionReq); dpy
->request++;
80 if (!_XReply (dpy, (xReply *) &rep, 0, xTrue1)) {
81 UnlockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->unlock_display
)(dpy);
82 SyncHandle ()if (dpy->synchandler) (*dpy->synchandler)(dpy);
83 return BadImplementation17;
84 }
85 *major = rep.major;
86 *minor = rep.minor;
87 UnlockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->unlock_display
)(dpy);
88 SyncHandle ()if (dpy->synchandler) (*dpy->synchandler)(dpy);
89 return Success0;
90}
91
92
93XvMCSurfaceInfo * XvMCListSurfaceTypes(Display *dpy, XvPortID port, int *num)
94{
95 XExtDisplayInfo *info = xvmc_find_display(dpy);
96 xvmcListSurfaceTypesReply rep;
97 xvmcListSurfaceTypesReq *req;
98 XvMCSurfaceInfo *surface_info = NULL((void*)0);
99
100 *num = 0;
101
102 XvMCCheckExtension (dpy, info, NULL)if (!((info) && ((info)->codes))) { XMissingExtension
(dpy, xvmc_extension_name); return ((void*)0); };
103
104 LockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->lock_display
)(dpy);
105 XvMCGetReq (ListSurfaceTypes, req)if ((dpy->bufptr + sizeof(xvmcListSurfaceTypesReq)) > dpy
->bufmax) _XFlush(dpy); req = (xvmcListSurfaceTypesReq *)(
dpy->last_req = dpy->bufptr); req->reqType = info->
codes->major_opcode; req->xvmcReqType = 1; req->length
= sizeof(xvmcListSurfaceTypesReq)>>2; dpy->bufptr +=
sizeof(xvmcListSurfaceTypesReq); dpy->request++;
106 req->port = port;
107 if (!_XReply (dpy, (xReply *) &rep, 0, xFalse0)) {
108 UnlockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->unlock_display
)(dpy);
109 SyncHandle ()if (dpy->synchandler) (*dpy->synchandler)(dpy);
110 return NULL((void*)0);
111 }
112
113 if(rep.num > 0) {
114 surface_info =
115 (XvMCSurfaceInfo*)Xmalloc(rep.num * sizeof(XvMCSurfaceInfo))malloc(((rep.num * sizeof(XvMCSurfaceInfo)) == 0 ? 1 : (rep.num
* sizeof(XvMCSurfaceInfo))));
116
117 if(surface_info) {
118 xvmcSurfaceInfo sinfo;
119 int i;
120
121 *num = rep.num;
122
123 for(i = 0; i < rep.num; i++) {
124 _XRead(dpy, (char*)&sinfo, sizeof(xvmcSurfaceInfo));
125 surface_info[i].surface_type_id = sinfo.surface_type_id;
126 surface_info[i].chroma_format = sinfo.chroma_format;
127 surface_info[i].max_width = sinfo.max_width;
128 surface_info[i].max_height = sinfo.max_height;
129 surface_info[i].subpicture_max_width =
130 sinfo.subpicture_max_width;
131 surface_info[i].subpicture_max_height =
132 sinfo.subpicture_max_height;
133 surface_info[i].mc_type = sinfo.mc_type;
134 surface_info[i].flags = sinfo.flags;
135 }
136 } else
137 _XEatData(dpy, rep.length << 2);
138 }
139
140 UnlockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->unlock_display
)(dpy);
141 SyncHandle ()if (dpy->synchandler) (*dpy->synchandler)(dpy);
142 return surface_info;
143}
144
145
146XvImageFormatValues * XvMCListSubpictureTypes (
147 Display * dpy,
148 XvPortID port,
149 int surface_type_id,
150 int *count_return
151)
152{
153 XExtDisplayInfo *info = xvmc_find_display(dpy);
154 xvmcListSubpictureTypesReply rep;
155 xvmcListSubpictureTypesReq *req;
156 XvImageFormatValues *ret = NULL((void*)0);
157
158
159 *count_return = 0;
160
161 XvMCCheckExtension (dpy, info, NULL)if (!((info) && ((info)->codes))) { XMissingExtension
(dpy, xvmc_extension_name); return ((void*)0); };
162
163
164 LockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->lock_display
)(dpy);
165 XvMCGetReq (ListSubpictureTypes, req)if ((dpy->bufptr + sizeof(xvmcListSubpictureTypesReq)) >
dpy->bufmax) _XFlush(dpy); req = (xvmcListSubpictureTypesReq
*)(dpy->last_req = dpy->bufptr); req->reqType = info
->codes->major_opcode; req->xvmcReqType = 8; req->
length = sizeof(xvmcListSubpictureTypesReq)>>2; dpy->
bufptr += sizeof(xvmcListSubpictureTypesReq); dpy->request
++;
166 req->port = port;
167 req->surface_type_id = surface_type_id;
168 if (!_XReply (dpy, (xReply *) &rep, 0, xFalse0)) {
169 UnlockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->unlock_display
)(dpy);
170 SyncHandle ()if (dpy->synchandler) (*dpy->synchandler)(dpy);
171 return NULL((void*)0);
172 }
173
174 if(rep.num > 0) {
175 ret =
176 (XvImageFormatValues*)Xmalloc(rep.num * sizeof(XvImageFormatValues))malloc(((rep.num * sizeof(XvImageFormatValues)) == 0 ? 1 : (rep
.num * sizeof(XvImageFormatValues))));
177
178 if(ret) {
179 xvImageFormatInfo Info;
180 int i;
181
182 *count_return = rep.num;
183
184 for(i = 0; i < rep.num; i++) {
185 _XRead(dpy, (char*)(&Info), sz_xvImageFormatInfo128);
186 ret[i].id = Info.id;
187 ret[i].type = Info.type;
188 ret[i].byte_order = Info.byte_order;
189 memcpy(&(ret[i].guid[0]), &(Info.guid[0]), 16);
190 ret[i].bits_per_pixel = Info.bpp;
191 ret[i].format = Info.format;
192 ret[i].num_planes = Info.num_planes;
193 ret[i].depth = Info.depth;
194 ret[i].red_mask = Info.red_mask;
195 ret[i].green_mask = Info.green_mask;
196 ret[i].blue_mask = Info.blue_mask;
197 ret[i].y_sample_bits = Info.y_sample_bits;
198 ret[i].u_sample_bits = Info.u_sample_bits;
199 ret[i].v_sample_bits = Info.v_sample_bits;
200 ret[i].horz_y_period = Info.horz_y_period;
201 ret[i].horz_u_period = Info.horz_u_period;
202 ret[i].horz_v_period = Info.horz_v_period;
203 ret[i].vert_y_period = Info.vert_y_period;
204 ret[i].vert_u_period = Info.vert_u_period;
205 ret[i].vert_v_period = Info.vert_v_period;
206 memcpy(&(ret[i].component_order[0]), &(Info.comp_order[0]), 32);
207 ret[i].scanline_order = Info.scanline_order;
208 }
209 } else
210 _XEatData(dpy, rep.length << 2);
211 }
212
213 UnlockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->unlock_display
)(dpy);
214 SyncHandle ()if (dpy->synchandler) (*dpy->synchandler)(dpy);
215 return ret;
216}
217
218
219/******************************************************************
220 These are intended as a protocol interface to be used by direct
221 rendering libraries. They are not intended to be client viewable
222 functions. These will stay in place until we have a mechanism in
223 place similar to that of OpenGL with an libXvMCcore library.
224*******************************************************************/
225
226/*
227 _xvmc_create_context -
228
229 Pass in the context with the surface_type_id, width, height,
230 port and flags filled out. This function will fill out the
231 context_id and update the width, height and flags field.
232 The server may return implementation-specific information
233 back in the priv_data. The size of that information will
234 an array of priv_count CARD32s. This data is allocated by
235 this function. If returned, the caller is responsible for
236 freeing it! Generally, such information is only returned if
237 an XVMC_DIRECT context was specified.
238*/
239
240
241Statusint _xvmc_create_context (
242 Display *dpy,
243 XvMCContext *context,
244 int *priv_count,
245 CARD32 **priv_data
246)
247{
248 XExtDisplayInfo *info = xvmc_find_display(dpy);
249 xvmcCreateContextReply rep;
250 xvmcCreateContextReq *req;
251
252 *priv_count = 0;
253 *priv_data = NULL((void*)0);
254
255 XvMCCheckExtension (dpy, info, BadImplementation)if (!((info) && ((info)->codes))) { XMissingExtension
(dpy, xvmc_extension_name); return 17; };
256
257 LockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->lock_display
)(dpy);
258 XvMCGetReq (CreateContext, req)if ((dpy->bufptr + sizeof(xvmcCreateContextReq)) > dpy->
bufmax) _XFlush(dpy); req = (xvmcCreateContextReq *)(dpy->
last_req = dpy->bufptr); req->reqType = info->codes->
major_opcode; req->xvmcReqType = 2; req->length = sizeof
(xvmcCreateContextReq)>>2; dpy->bufptr += sizeof(xvmcCreateContextReq
); dpy->request++;
259 context->context_id = XAllocID(dpy)((*((_XPrivDisplay)dpy)->resource_alloc)((dpy)));
260 req->context_id = context->context_id;
261 req->port = context->port;
262 req->surface_type_id = context->surface_type_id;
263 req->width = context->width;
264 req->height = context->height;
265 req->flags = context->flags;
266 if (!_XReply (dpy, (xReply *) &rep, 0, xFalse0)) {
267 UnlockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->unlock_display
)(dpy);
268 SyncHandle ()if (dpy->synchandler) (*dpy->synchandler)(dpy);
269 return BadImplementation17;
270 }
271 context->width = rep.width_actual;
272 context->height = rep.height_actual;
273 context->flags = rep.flags_return;
274
275 if(rep.length) {
276 *priv_data = Xmalloc(rep.length << 2)malloc(((rep.length << 2) == 0 ? 1 : (rep.length <<
2)));
277 if(*priv_data) {
278 _XRead(dpy, (char*)(*priv_data), rep.length << 2);
279 *priv_count = rep.length;
280 } else
281 _XEatData(dpy, rep.length << 2);
282 }
283
284 UnlockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->unlock_display
)(dpy);
285 SyncHandle ()if (dpy->synchandler) (*dpy->synchandler)(dpy);
286 return Success0;
287}
288
289Statusint _xvmc_destroy_context (
290 Display *dpy,
291 XvMCContext *context
292)
293{
294 XExtDisplayInfo *info = xvmc_find_display(dpy);
295 xvmcDestroyContextReq *req;
296
297 XvMCCheckExtension (dpy, info, BadImplementation)if (!((info) && ((info)->codes))) { XMissingExtension
(dpy, xvmc_extension_name); return 17; };
298
299 LockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->lock_display
)(dpy);
300 XvMCGetReq (DestroyContext, req)if ((dpy->bufptr + sizeof(xvmcDestroyContextReq)) > dpy
->bufmax) _XFlush(dpy); req = (xvmcDestroyContextReq *)(dpy
->last_req = dpy->bufptr); req->reqType = info->codes
->major_opcode; req->xvmcReqType = 3; req->length = sizeof
(xvmcDestroyContextReq)>>2; dpy->bufptr += sizeof(xvmcDestroyContextReq
); dpy->request++;
301 req->context_id = context->context_id;
302 UnlockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->unlock_display
)(dpy);
303 SyncHandle ()if (dpy->synchandler) (*dpy->synchandler)(dpy);
304 return Success0;
305}
306
307
308/*
309 _xvmc_create_surface -
310
311 Pass the context and this function will fill out all the
312 information in the surface.
313 The server may return implementation-specific information
314 back in the priv_data. The size of that information will
315 an array of priv_count CARD32s. This data is allocated by
316 this function. If returned, the caller is responsible for
317 freeing it! Generally, such information is returned only if
318 the context was a direct context.
319
320*/
321
322Statusint _xvmc_create_surface (
323 Display *dpy,
324 XvMCContext *context,
325 XvMCSurface *surface,
326 int *priv_count,
327 CARD32 **priv_data
328)
329{
330 XExtDisplayInfo *info = xvmc_find_display(dpy);
331 xvmcCreateSurfaceReply rep;
332 xvmcCreateSurfaceReq *req;
333
334 *priv_count = 0;
335 *priv_data = NULL((void*)0);
336
337 XvMCCheckExtension (dpy, info, BadImplementation)if (!((info) && ((info)->codes))) { XMissingExtension
(dpy, xvmc_extension_name); return 17; };
338
339 LockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->lock_display
)(dpy);
340 XvMCGetReq (CreateSurface, req)if ((dpy->bufptr + sizeof(xvmcCreateSurfaceReq)) > dpy->
bufmax) _XFlush(dpy); req = (xvmcCreateSurfaceReq *)(dpy->
last_req = dpy->bufptr); req->reqType = info->codes->
major_opcode; req->xvmcReqType = 4; req->length = sizeof
(xvmcCreateSurfaceReq)>>2; dpy->bufptr += sizeof(xvmcCreateSurfaceReq
); dpy->request++;
341
342 surface->surface_id = XAllocID(dpy)((*((_XPrivDisplay)dpy)->resource_alloc)((dpy)));
343 surface->context_id = context->context_id;
344 surface->surface_type_id = context->surface_type_id;
345 surface->width = context->width;
346 surface->height = context->height;
347
348 req->surface_id = surface->surface_id;
349 req->context_id = surface->context_id;
350 if (!_XReply (dpy, (xReply *) &rep, 0, xFalse0)) {
351 UnlockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->unlock_display
)(dpy);
352 SyncHandle ()if (dpy->synchandler) (*dpy->synchandler)(dpy);
353 return BadImplementation17;
354 }
355
356 if(rep.length) {
357 *priv_data = Xmalloc(rep.length << 2)malloc(((rep.length << 2) == 0 ? 1 : (rep.length <<
2)));
358 if(*priv_data) {
359 _XRead(dpy, (char*)(*priv_data), rep.length << 2);
360 *priv_count = rep.length;
361 } else
362 _XEatData(dpy, rep.length << 2);
363 }
364
365 UnlockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->unlock_display
)(dpy);
366 SyncHandle ()if (dpy->synchandler) (*dpy->synchandler)(dpy);
367 return Success0;
368}
369
370Statusint _xvmc_destroy_surface (
371 Display *dpy,
372 XvMCSurface *surface
373)
374{
375 XExtDisplayInfo *info = xvmc_find_display(dpy);
376 xvmcDestroySurfaceReq *req;
377
378 XvMCCheckExtension (dpy, info, BadImplementation)if (!((info) && ((info)->codes))) { XMissingExtension
(dpy, xvmc_extension_name); return 17; };
379
380 LockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->lock_display
)(dpy);
381 XvMCGetReq (DestroySurface, req)if ((dpy->bufptr + sizeof(xvmcDestroySurfaceReq)) > dpy
->bufmax) _XFlush(dpy); req = (xvmcDestroySurfaceReq *)(dpy
->last_req = dpy->bufptr); req->reqType = info->codes
->major_opcode; req->xvmcReqType = 5; req->length = sizeof
(xvmcDestroySurfaceReq)>>2; dpy->bufptr += sizeof(xvmcDestroySurfaceReq
); dpy->request++;
382 req->surface_id = surface->surface_id;
383 UnlockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->unlock_display
)(dpy);
384 SyncHandle ()if (dpy->synchandler) (*dpy->synchandler)(dpy);
385 return Success0;
386}
387
388/*
389 _xvmc_create_subpicture -
390
391 Pass the subpicture with the width, height and xvimage_id filled
392 out and this function will fill out everything else in the
393 subpicture as well as adjust the width and height if needed.
394 The server may return implementation-specific information
395 back in the priv_data. The size of that information will
396 an array of priv_count CARD32s. This data is allocated by
397 this function. If returned, the caller is responsible for
398 freeing it! Generally, such information is returned only if
399 the context was a direct context.
400
401*/
402
403Statusint _xvmc_create_subpicture (
404 Display *dpy,
405 XvMCContext *context,
406 XvMCSubpicture *subpicture,
407 int *priv_count,
408 CARD32 **priv_data
409)
410{
411 XExtDisplayInfo *info = xvmc_find_display(dpy);
412 xvmcCreateSubpictureReply rep;
413 xvmcCreateSubpictureReq *req;
414
415 *priv_count = 0;
416 *priv_data = NULL((void*)0);
417
418 XvMCCheckExtension (dpy, info, BadImplementation)if (!((info) && ((info)->codes))) { XMissingExtension
(dpy, xvmc_extension_name); return 17; };
419
420 LockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->lock_display
)(dpy);
421 XvMCGetReq (CreateSubpicture, req)if ((dpy->bufptr + sizeof(xvmcCreateSubpictureReq)) > dpy
->bufmax) _XFlush(dpy); req = (xvmcCreateSubpictureReq *)(
dpy->last_req = dpy->bufptr); req->reqType = info->
codes->major_opcode; req->xvmcReqType = 6; req->length
= sizeof(xvmcCreateSubpictureReq)>>2; dpy->bufptr +=
sizeof(xvmcCreateSubpictureReq); dpy->request++;
422
423 subpicture->subpicture_id = XAllocID(dpy)((*((_XPrivDisplay)dpy)->resource_alloc)((dpy)));
424 subpicture->context_id = context->context_id;
425
426 req->subpicture_id = subpicture->subpicture_id;
427 req->context_id = subpicture->context_id;
428 req->xvimage_id = subpicture->xvimage_id;
429 req->width = subpicture->width;
430 req->height = subpicture->height;
431 if (!_XReply (dpy, (xReply *) &rep, 0, xFalse0)) {
432 UnlockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->unlock_display
)(dpy);
433 SyncHandle ()if (dpy->synchandler) (*dpy->synchandler)(dpy);
434 return BadImplementation17;
435 }
436
437 subpicture->width = rep.width_actual;
438 subpicture->height = rep.height_actual;
439 subpicture->num_palette_entries = rep.num_palette_entries;
440 subpicture->entry_bytes = rep.entry_bytes;
441 subpicture->component_order[0] = rep.component_order[0];
442 subpicture->component_order[1] = rep.component_order[1];
443 subpicture->component_order[2] = rep.component_order[2];
444 subpicture->component_order[3] = rep.component_order[3];
445
446 if(rep.length) {
447 *priv_data = Xmalloc(rep.length << 2)malloc(((rep.length << 2) == 0 ? 1 : (rep.length <<
2)));
448 if(*priv_data) {
449 _XRead(dpy, (char*)(*priv_data), rep.length << 2);
450 *priv_count = rep.length;
451 } else
452 _XEatData(dpy, rep.length << 2);
453 }
454
455 UnlockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->unlock_display
)(dpy);
456 SyncHandle ()if (dpy->synchandler) (*dpy->synchandler)(dpy);
457 return Success0;
458}
459
460Statusint _xvmc_destroy_subpicture(
461 Display *dpy,
462 XvMCSubpicture *subpicture
463)
464{
465 XExtDisplayInfo *info = xvmc_find_display(dpy);
466 xvmcDestroySubpictureReq *req;
467
468 XvMCCheckExtension (dpy, info, BadImplementation)if (!((info) && ((info)->codes))) { XMissingExtension
(dpy, xvmc_extension_name); return 17; };
469
470 LockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->lock_display
)(dpy);
471 XvMCGetReq (DestroySubpicture, req)if ((dpy->bufptr + sizeof(xvmcDestroySubpictureReq)) > dpy
->bufmax) _XFlush(dpy); req = (xvmcDestroySubpictureReq *)
(dpy->last_req = dpy->bufptr); req->reqType = info->
codes->major_opcode; req->xvmcReqType = 7; req->length
= sizeof(xvmcDestroySubpictureReq)>>2; dpy->bufptr +=
sizeof(xvmcDestroySubpictureReq); dpy->request++;
472 req->subpicture_id = subpicture->subpicture_id;
473 UnlockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->unlock_display
)(dpy);
474 SyncHandle ()if (dpy->synchandler) (*dpy->synchandler)(dpy);
475 return Success0;
476}
477
478Statusint XvMCGetDRInfo(Display *dpy, XvPortID port,
479 char **name, char **busID,
480 int *major, int *minor,
481 int *patchLevel,
482 int *isLocal)
483{
484 XExtDisplayInfo *info = xvmc_find_display(dpy);
485 xvmcGetDRInfoReply rep;
486 xvmcGetDRInfoReq *req;
487 char *tmpBuf = NULL((void*)0);
488 CARD32 magic;
489
490#ifdef HAVE_SHMAT1
491 volatile CARD32 *shMem;
492 struct timezone here;
493 struct timeval now;
494 here.tz_minuteswest = 0;
495 here.tz_dsttime = 0;
496#endif
497
498 XvMCCheckExtension (dpy, info, BadImplementation)if (!((info) && ((info)->codes))) { XMissingExtension
(dpy, xvmc_extension_name); return 17; };
499
500 LockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->lock_display
)(dpy);
501 XvMCGetReq (GetDRInfo, req)if ((dpy->bufptr + sizeof(xvmcGetDRInfoReq)) > dpy->
bufmax) _XFlush(dpy); req = (xvmcGetDRInfoReq *)(dpy->last_req
= dpy->bufptr); req->reqType = info->codes->major_opcode
; req->xvmcReqType = 9; req->length = sizeof(xvmcGetDRInfoReq
)>>2; dpy->bufptr += sizeof(xvmcGetDRInfoReq); dpy->
request++;
502
503 req->port = port;
504 magic = 0;
Value stored to 'magic' is never read
505 req->magic = 0;
506#ifdef HAVE_SHMAT1
507 req->shmKey = shmget(IPC_PRIVATE((__key_t) 0), 1024, IPC_CREAT01000 | 0600);
508
509 /*
510 * We fill a shared memory page with a repetitive pattern. If the
511 * X server can read this pattern, we probably have a local connection.
512 * Note that we can trigger the remote X server to read any shared
513 * page on the remote machine, so we shouldn't be able to guess and verify
514 * any complicated data on those pages. Thats the explanation of this
515 * otherwise stupid-looking pattern algorithm.
516 */
517
518 if (req->shmKey >= 0) {
519 shMem = (CARD32 *) shmat(req->shmKey, NULL((void*)0), 0);
520 shmctl( req->shmKey, IPC_RMID0, NULL((void*)0));
521 if ( shMem ) {
522
523 register volatile CARD32 *shMemC = shMem;
524 register int i;
525
526 gettimeofday( &now, &here);
527 magic = now.tv_usec & 0x000FFFFF;
528 req->magic = magic;
529 i = 1024 / sizeof(CARD32);
530 while(i--) {
531 *shMemC++ = magic;
532 magic = ~magic;
533 }
534 } else {
535 req->shmKey = -1;
536 }
537 }
538#else
539 req->shmKey = 0;
540#endif
541 if (!_XReply (dpy, (xReply *) &rep, 0, xFalse0)) {
542 UnlockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->unlock_display
)(dpy);
543 SyncHandle ()if (dpy->synchandler) (*dpy->synchandler)(dpy);
544#ifdef HAVE_SHMAT1
545 if ( req->shmKey >= 0) {
546 shmdt( (const void *) shMem );
547 }
548#endif
549 return -1;
550 }
551#ifdef HAVE_SHMAT1
552 shmdt( (const void *) shMem );
553#endif
554
555 if (rep.length > 0) {
556
557 int realSize = rep.length << 2;
558
559 tmpBuf = (char *) Xmalloc(realSize)malloc(((realSize) == 0 ? 1 : (realSize)));
560 if (tmpBuf) {
561 *name = (char *) Xmalloc(rep.nameLen)malloc(((rep.nameLen) == 0 ? 1 : (rep.nameLen)));
562 if (*name) {
563 *busID = (char *) Xmalloc(rep.busIDLen)malloc(((rep.busIDLen) == 0 ? 1 : (rep.busIDLen)));
564 if (! *busID) {
565 XFree(*name);
566 XFree(tmpBuf);
567 }
568 } else {
569 XFree(tmpBuf);
570 }
571 }
572
573 if (*name && *busID && tmpBuf) {
574
575 _XRead(dpy, tmpBuf, realSize);
576 strncpy(*name,tmpBuf,rep.nameLen);
577 strncpy(*busID,tmpBuf+rep.nameLen,rep.busIDLen);
578 XFree(tmpBuf);
579
580 } else {
581
582 _XEatData(dpy, realSize);
583 UnlockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->unlock_display
)(dpy);
584 SyncHandle ()if (dpy->synchandler) (*dpy->synchandler)(dpy);
585 return -1;
586
587 }
588 }
589
590 UnlockDisplay (dpy)if ((dpy)->lock_fns) (*(dpy)->lock_fns->unlock_display
)(dpy);
591 SyncHandle ()if (dpy->synchandler) (*dpy->synchandler)(dpy);
592 *major = rep.major;
593 *minor = rep.minor;
594 *patchLevel = rep.patchLevel;
595 *isLocal = (req->shmKey > 0) ? rep.isLocal : 1;
596 return (rep.length > 0) ? Success0 : BadImplementation17;
597}
598