451ab91e |
1 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
2 | * Mupen64plus - osd.cpp * |
3 | * Mupen64Plus homepage: http://code.google.com/p/mupen64plus/ * |
4 | * Copyright (C) 2008 Nmn Ebenblues * |
5 | * * |
6 | * This program is free software; you can redistribute it and/or modify * |
7 | * it under the terms of the GNU General Public License as published by * |
8 | * the Free Software Foundation; either version 2 of the License, or * |
9 | * (at your option) any later version. * |
10 | * * |
11 | * This program is distributed in the hope that it will be useful, * |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
14 | * GNU General Public License for more details. * |
15 | * * |
16 | * You should have received a copy of the GNU General Public License * |
17 | * along with this program; if not, write to the * |
18 | * Free Software Foundation, Inc., * |
19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * |
20 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
21 | |
22 | // On-screen Display |
23 | #ifdef PANDORA |
24 | #include <SDL_opengles2.h> |
25 | #else |
26 | #include <SDL_opengl.h> |
27 | #endif |
28 | #include <SDL_thread.h> |
29 | |
30 | #ifndef PANDORA |
31 | #include "OGLFT.h" |
32 | #endif |
33 | #include "osd.h" |
34 | |
35 | extern "C" { |
36 | #define M64P_CORE_PROTOTYPES 1 |
37 | #include "api/m64p_config.h" |
38 | #include "api/config.h" |
39 | #include "api/callbacks.h" |
40 | #include "api/m64p_vidext.h" |
41 | #include "api/vidext.h" |
42 | #include "main/main.h" |
43 | #include "main/list.h" |
44 | #include "osal/files.h" |
45 | #include "osal/preproc.h" |
46 | #include "plugin/plugin.h" |
47 | } |
48 | |
49 | #define FONT_FILENAME "font.ttf" |
50 | |
51 | typedef void (APIENTRYP PTRGLACTIVETEXTURE)(GLenum texture); |
52 | static PTRGLACTIVETEXTURE pglActiveTexture = NULL; |
53 | |
54 | // static variables for OSD |
55 | static int l_OsdInitialized = 0; |
56 | |
57 | static LIST_HEAD(l_messageQueue); |
58 | static OGLFT::Monochrome *l_font; |
59 | static float l_fLineHeight = -1.0; |
60 | |
61 | static void animation_none(osd_message_t *); |
62 | static void animation_fade(osd_message_t *); |
63 | static void osd_remove_message(osd_message_t *msg); |
64 | static osd_message_t * osd_message_valid(osd_message_t *testmsg); |
65 | |
66 | static float fCornerScroll[OSD_NUM_CORNERS]; |
67 | |
68 | static SDL_mutex *osd_list_lock; |
69 | |
70 | // animation handlers |
71 | static void (*l_animations[OSD_NUM_ANIM_TYPES])(osd_message_t *) = { |
72 | animation_none, // animation handler for OSD_NONE |
73 | animation_fade // animation handler for OSD_FADE |
74 | }; |
75 | |
76 | // private functions |
77 | // draw message on screen |
78 | static void draw_message(osd_message_t *msg, int width, int height) |
79 | { |
80 | float x = 0., |
81 | y = 0.; |
82 | |
83 | if(!l_font || !l_font->isValid()) |
84 | return; |
85 | |
86 | // set color. alpha is hard coded to 1. animation can change this |
87 | l_font->setForegroundColor(msg->color[R], msg->color[G], msg->color[B], 1.0); |
88 | l_font->setBackgroundColor(0.0, 0.0, 0.0, 0.0); |
89 | |
90 | // set justification based on corner |
91 | switch(msg->corner) |
92 | { |
93 | case OSD_TOP_LEFT: |
94 | l_font->setVerticalJustification(OGLFT::Face::TOP); |
95 | l_font->setHorizontalJustification(OGLFT::Face::LEFT); |
96 | x = 0.; |
97 | y = (float)height; |
98 | break; |
99 | case OSD_TOP_CENTER: |
100 | l_font->setVerticalJustification(OGLFT::Face::TOP); |
101 | l_font->setHorizontalJustification(OGLFT::Face::CENTER); |
102 | x = ((float)width)/2.0f; |
103 | y = (float)height; |
104 | break; |
105 | case OSD_TOP_RIGHT: |
106 | l_font->setVerticalJustification(OGLFT::Face::TOP); |
107 | l_font->setHorizontalJustification(OGLFT::Face::RIGHT); |
108 | x = (float)width; |
109 | y = (float)height; |
110 | break; |
111 | case OSD_MIDDLE_LEFT: |
112 | l_font->setVerticalJustification(OGLFT::Face::MIDDLE); |
113 | l_font->setHorizontalJustification(OGLFT::Face::LEFT); |
114 | x = 0.; |
115 | y = ((float)height)/2.0f; |
116 | break; |
117 | case OSD_MIDDLE_CENTER: |
118 | l_font->setVerticalJustification(OGLFT::Face::MIDDLE); |
119 | l_font->setHorizontalJustification(OGLFT::Face::CENTER); |
120 | x = ((float)width)/2.0f; |
121 | y = ((float)height)/2.0f; |
122 | break; |
123 | case OSD_MIDDLE_RIGHT: |
124 | l_font->setVerticalJustification(OGLFT::Face::MIDDLE); |
125 | l_font->setHorizontalJustification(OGLFT::Face::RIGHT); |
126 | x = (float)width; |
127 | y = ((float)height)/2.0f; |
128 | break; |
129 | case OSD_BOTTOM_LEFT: |
130 | l_font->setVerticalJustification(OGLFT::Face::BOTTOM); |
131 | l_font->setHorizontalJustification(OGLFT::Face::LEFT); |
132 | x = 0.; |
133 | y = 0.; |
134 | break; |
135 | case OSD_BOTTOM_CENTER: |
136 | l_font->setVerticalJustification(OGLFT::Face::BOTTOM); |
137 | l_font->setHorizontalJustification(OGLFT::Face::CENTER); |
138 | x = ((float)width)/2.0f; |
139 | y = 0.; |
140 | break; |
141 | case OSD_BOTTOM_RIGHT: |
142 | l_font->setVerticalJustification(OGLFT::Face::BOTTOM); |
143 | l_font->setHorizontalJustification(OGLFT::Face::RIGHT); |
144 | x = (float)width; |
145 | y = 0.; |
146 | break; |
147 | default: |
148 | l_font->setVerticalJustification(OGLFT::Face::BOTTOM); |
149 | l_font->setHorizontalJustification(OGLFT::Face::LEFT); |
150 | x = 0.; |
151 | y = 0.; |
152 | break; |
153 | } |
154 | |
155 | // apply animation for current message state |
156 | (*l_animations[msg->animation[msg->state]])(msg); |
157 | |
158 | // xoffset moves message left |
159 | x -= msg->xoffset; |
160 | // yoffset moves message up |
161 | y += msg->yoffset; |
162 | |
163 | // get the bounding box if invalid |
164 | if (msg->sizebox[0] == 0 && msg->sizebox[2] == 0) // xmin and xmax |
165 | { |
166 | OGLFT::BBox bbox = l_font->measure_nominal(msg->text); |
167 | msg->sizebox[0] = bbox.x_min_; |
168 | msg->sizebox[1] = bbox.y_min_; |
169 | msg->sizebox[2] = bbox.x_max_; |
170 | msg->sizebox[3] = bbox.y_max_; |
171 | } |
172 | |
173 | // draw the text line |
174 | l_font->draw(x, y, msg->text, msg->sizebox); |
175 | } |
176 | |
177 | // null animation handler |
178 | static void animation_none(osd_message_t *msg) { } |
179 | |
180 | // fade in/out animation handler |
181 | static void animation_fade(osd_message_t *msg) |
182 | { |
183 | float alpha = 1.; |
184 | float elapsed_frames; |
185 | float total_frames = (float)msg->timeout[msg->state]; |
186 | |
187 | switch(msg->state) |
188 | { |
189 | case OSD_DISAPPEAR: |
190 | elapsed_frames = (float)(total_frames - msg->frames); |
191 | break; |
192 | case OSD_APPEAR: |
193 | default: |
194 | elapsed_frames = (float)msg->frames; |
195 | break; |
196 | } |
197 | |
198 | if(total_frames != 0.) |
199 | alpha = elapsed_frames / total_frames; |
200 | |
201 | l_font->setForegroundColor(msg->color[R], msg->color[G], msg->color[B], alpha); |
202 | } |
203 | |
204 | // sets message Y offset depending on where they are in the message queue |
205 | static float get_message_offset(osd_message_t *msg, float fLinePos) |
206 | { |
207 | float offset = (float) (l_font->height() * fLinePos); |
208 | |
209 | switch(msg->corner) |
210 | { |
211 | case OSD_TOP_LEFT: |
212 | case OSD_TOP_CENTER: |
213 | case OSD_TOP_RIGHT: |
214 | return -offset; |
215 | break; |
216 | default: |
217 | return offset; |
218 | break; |
219 | } |
220 | } |
221 | |
222 | // public functions |
223 | extern "C" |
224 | void osd_init(int width, int height) |
225 | { |
226 | const char *fontpath; |
227 | |
228 | osd_list_lock = SDL_CreateMutex(); |
229 | if (!osd_list_lock) { |
230 | DebugMessage(M64MSG_ERROR, "Could not create osd list lock"); |
231 | return; |
232 | } |
233 | |
234 | if (!OGLFT::Init_FT()) |
235 | { |
236 | DebugMessage(M64MSG_ERROR, "Could not initialize freetype library."); |
237 | return; |
238 | } |
239 | |
240 | fontpath = ConfigGetSharedDataFilepath(FONT_FILENAME); |
241 | |
242 | l_font = new OGLFT::Monochrome(fontpath, (float) height / 35.0f); // make font size proportional to screen height |
243 | |
244 | if(!l_font || !l_font->isValid()) |
245 | { |
246 | DebugMessage(M64MSG_ERROR, "Could not construct face from %s", fontpath); |
247 | return; |
248 | } |
249 | |
250 | // clear statics |
251 | for (int i = 0; i < OSD_NUM_CORNERS; i++) |
252 | fCornerScroll[i] = 0.0; |
253 | |
254 | glPixelStorei(GL_UNPACK_ALIGNMENT, 1); |
255 | #if defined(GL_RASTER_POSITION_UNCLIPPED_IBM) |
256 | glEnable(GL_RASTER_POSITION_UNCLIPPED_IBM); |
257 | #endif |
258 | |
259 | pglActiveTexture = (PTRGLACTIVETEXTURE) VidExt_GL_GetProcAddress("glActiveTexture"); |
260 | if (pglActiveTexture == NULL) |
261 | { |
262 | DebugMessage(M64MSG_WARNING, "OpenGL function glActiveTexture() not supported. OSD deactivated."); |
263 | return; |
264 | } |
265 | |
266 | // set initialized flag |
267 | l_OsdInitialized = 1; |
268 | } |
269 | |
270 | extern "C" |
271 | void osd_exit(void) |
272 | { |
273 | osd_message_t *msg, *safe; |
274 | |
275 | // delete font renderer |
276 | if (l_font) |
277 | { |
278 | delete l_font; |
279 | l_font = NULL; |
280 | } |
281 | |
282 | // delete message queue |
283 | SDL_LockMutex(osd_list_lock); |
284 | list_for_each_entry_safe(msg, safe, &l_messageQueue, osd_message_t, list) { |
285 | osd_remove_message(msg); |
286 | if (!msg->user_managed) |
287 | free(msg); |
288 | } |
289 | SDL_UnlockMutex(osd_list_lock); |
290 | |
291 | // shut down the Freetype library |
292 | OGLFT::Uninit_FT(); |
293 | |
294 | SDL_DestroyMutex(osd_list_lock); |
295 | |
296 | // reset initialized flag |
297 | l_OsdInitialized = 0; |
298 | } |
299 | |
300 | // renders the current osd message queue to the screen |
301 | extern "C" |
302 | void osd_render() |
303 | { |
304 | osd_message_t *msg, *safe; |
305 | int i; |
306 | |
307 | // if we're not initialized or list is empty, then just skip it all |
308 | if (!l_OsdInitialized || list_empty(&l_messageQueue)) |
309 | return; |
310 | |
311 | // get the viewport dimensions |
312 | GLint viewport[4]; |
313 | glGetIntegerv(GL_VIEWPORT, viewport); |
314 | |
315 | // save all the attributes |
316 | glPushAttrib(GL_ALL_ATTRIB_BITS); |
317 | bool bFragmentProg = glIsEnabled(GL_FRAGMENT_PROGRAM_ARB) != 0; |
318 | bool bColorArray = glIsEnabled(GL_COLOR_ARRAY) != 0; |
319 | bool bTexCoordArray = glIsEnabled(GL_TEXTURE_COORD_ARRAY) != 0; |
320 | bool bSecColorArray = glIsEnabled(GL_SECONDARY_COLOR_ARRAY) != 0; |
321 | |
322 | // deactivate all the texturing units |
323 | GLint iActiveTex; |
324 | bool bTexture2D[8]; |
325 | glGetIntegerv(GL_ACTIVE_TEXTURE_ARB, &iActiveTex); |
326 | for (i = 0; i < 8; i++) |
327 | { |
328 | pglActiveTexture(GL_TEXTURE0_ARB + i); |
329 | bTexture2D[i] = glIsEnabled(GL_TEXTURE_2D) != 0; |
330 | glDisable(GL_TEXTURE_2D); |
331 | } |
332 | |
333 | // save the matrices and set up new ones |
334 | glMatrixMode(GL_PROJECTION); |
335 | glPushMatrix(); |
336 | glLoadIdentity(); |
337 | gluOrtho2D(viewport[0],viewport[2],viewport[1],viewport[3]); |
338 | |
339 | glMatrixMode(GL_MODELVIEW); |
340 | glPushMatrix(); |
341 | glLoadIdentity(); |
342 | |
343 | // setup for drawing text |
344 | glDisable(GL_FOG); |
345 | glDisable(GL_LIGHTING); |
346 | glDisable(GL_ALPHA_TEST); |
347 | glDisable(GL_DEPTH_TEST); |
348 | glDisable(GL_CULL_FACE); |
349 | glDisable(GL_SCISSOR_TEST); |
350 | glDisable(GL_STENCIL_TEST); |
351 | glDisable(GL_FRAGMENT_PROGRAM_ARB); |
352 | glDisable(GL_COLOR_MATERIAL); |
353 | |
354 | glEnable(GL_BLEND); |
355 | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
356 | |
357 | glDisableClientState(GL_COLOR_ARRAY); |
358 | glDisableClientState(GL_TEXTURE_COORD_ARRAY); |
359 | glDisableClientState(GL_SECONDARY_COLOR_ARRAY); |
360 | glShadeModel(GL_FLAT); |
361 | |
362 | // get line height if invalid |
363 | if (l_fLineHeight < 0.0) |
364 | { |
365 | OGLFT::BBox bbox = l_font->measure("01abjZpqRGB"); |
366 | l_fLineHeight = (bbox.y_max_ - bbox.y_min_) / 30.0f; |
367 | } |
368 | |
369 | // keeps track of next message position for each corner |
370 | float fCornerPos[OSD_NUM_CORNERS]; |
371 | for (i = 0; i < OSD_NUM_CORNERS; i++) |
372 | fCornerPos[i] = 0.5f * l_fLineHeight; |
373 | |
374 | SDL_LockMutex(osd_list_lock); |
375 | list_for_each_entry_safe(msg, safe, &l_messageQueue, osd_message_t, list) { |
376 | // update message state |
377 | if(msg->timeout[msg->state] != OSD_INFINITE_TIMEOUT && |
378 | ++msg->frames >= msg->timeout[msg->state]) |
379 | { |
380 | // if message is in last state, mark it for deletion and continue to the next message |
381 | if(msg->state >= OSD_NUM_STATES - 1) |
382 | { |
383 | if (msg->user_managed) { |
384 | osd_remove_message(msg); |
385 | } else { |
386 | osd_remove_message(msg); |
387 | free(msg); |
388 | } |
389 | |
390 | continue; |
391 | } |
392 | |
393 | // go to next state and reset frame count |
394 | msg->state++; |
395 | msg->frames = 0; |
396 | } |
397 | |
398 | // offset y depending on how many other messages are in the same corner |
399 | float fStartOffset; |
400 | if (msg->corner >= OSD_MIDDLE_LEFT && msg->corner <= OSD_MIDDLE_RIGHT) // don't scroll the middle messages |
401 | fStartOffset = fCornerPos[msg->corner]; |
402 | else |
403 | fStartOffset = fCornerPos[msg->corner] + (fCornerScroll[msg->corner] * l_fLineHeight); |
404 | msg->yoffset += get_message_offset(msg, fStartOffset); |
405 | |
406 | draw_message(msg, viewport[2], viewport[3]); |
407 | |
408 | msg->yoffset -= get_message_offset(msg, fStartOffset); |
409 | fCornerPos[msg->corner] += l_fLineHeight; |
410 | } |
411 | SDL_UnlockMutex(osd_list_lock); |
412 | |
413 | // do the scrolling |
414 | for (int i = 0; i < OSD_NUM_CORNERS; i++) |
415 | { |
416 | fCornerScroll[i] += 0.1f; |
417 | if (fCornerScroll[i] >= 0.0) |
418 | fCornerScroll[i] = 0.0; |
419 | } |
420 | |
421 | // restore the matrices |
422 | glMatrixMode(GL_MODELVIEW); |
423 | glPopMatrix(); |
424 | glMatrixMode(GL_PROJECTION); |
425 | glPopMatrix(); |
426 | |
427 | // restore the attributes |
428 | for (int i = 0; i < 8; i++) |
429 | { |
430 | pglActiveTexture(GL_TEXTURE0_ARB + i); |
431 | if (bTexture2D[i]) |
432 | glEnable(GL_TEXTURE_2D); |
433 | else |
434 | glDisable(GL_TEXTURE_2D); |
435 | } |
436 | pglActiveTexture(iActiveTex); |
437 | glPopAttrib(); |
438 | if (bFragmentProg) |
439 | glEnable(GL_FRAGMENT_PROGRAM_ARB); |
440 | if (bColorArray) |
441 | glEnableClientState(GL_COLOR_ARRAY); |
442 | if (bTexCoordArray) |
443 | glEnableClientState(GL_TEXTURE_COORD_ARRAY); |
444 | if (bSecColorArray) |
445 | glEnableClientState(GL_SECONDARY_COLOR_ARRAY); |
446 | |
447 | glFinish(); |
448 | } |
449 | |
450 | // creates a new osd_message_t, adds it to the message queue and returns it in case |
451 | // the user wants to modify its parameters. Note, if the message can't be created, |
452 | // NULL is returned. |
453 | extern "C" |
454 | osd_message_t * osd_new_message(enum osd_corner eCorner, const char *fmt, ...) |
455 | { |
456 | va_list ap; |
457 | char buf[1024]; |
458 | |
459 | if (!l_OsdInitialized) return NULL; |
460 | |
461 | osd_message_t *msg = (osd_message_t *)malloc(sizeof(*msg)); |
462 | |
463 | if (!msg) return NULL; |
464 | |
465 | va_start(ap, fmt); |
466 | vsnprintf(buf, 1024, fmt, ap); |
467 | buf[1023] = 0; |
468 | va_end(ap); |
469 | |
470 | // set default values |
471 | memset(msg, 0, sizeof(osd_message_t)); |
472 | msg->text = strdup(buf); |
473 | msg->user_managed = 0; |
474 | // default to white |
475 | msg->color[R] = 1.; |
476 | msg->color[G] = 1.; |
477 | msg->color[B] = 1.; |
478 | |
479 | msg->sizebox[0] = 0.0; // set a null bounding box |
480 | msg->sizebox[1] = 0.0; |
481 | msg->sizebox[2] = 0.0; |
482 | msg->sizebox[3] = 0.0; |
483 | |
484 | msg->corner = eCorner; |
485 | msg->state = OSD_APPEAR; |
486 | fCornerScroll[eCorner] -= 1.0; // start this one before the beginning of the list and scroll it in |
487 | |
488 | msg->animation[OSD_APPEAR] = OSD_FADE; |
489 | msg->animation[OSD_DISPLAY] = OSD_NONE; |
490 | msg->animation[OSD_DISAPPEAR] = OSD_FADE; |
491 | |
492 | if (eCorner >= OSD_MIDDLE_LEFT && eCorner <= OSD_MIDDLE_RIGHT) |
493 | { |
494 | msg->timeout[OSD_APPEAR] = 20; |
495 | msg->timeout[OSD_DISPLAY] = 60; |
496 | msg->timeout[OSD_DISAPPEAR] = 20; |
497 | } |
498 | else |
499 | { |
500 | msg->timeout[OSD_APPEAR] = 20; |
501 | msg->timeout[OSD_DISPLAY] = 180; |
502 | msg->timeout[OSD_DISAPPEAR] = 40; |
503 | } |
504 | |
505 | // add to message queue |
506 | SDL_LockMutex(osd_list_lock); |
507 | list_add(&msg->list, &l_messageQueue); |
508 | SDL_UnlockMutex(osd_list_lock); |
509 | |
510 | return msg; |
511 | } |
512 | |
513 | // update message string |
514 | extern "C" |
515 | void osd_update_message(osd_message_t *msg, const char *fmt, ...) |
516 | { |
517 | va_list ap; |
518 | char buf[1024]; |
519 | |
520 | if (!l_OsdInitialized || !msg) return; |
521 | |
522 | va_start(ap, fmt); |
523 | vsnprintf(buf, 1024, fmt, ap); |
524 | buf[1023] = 0; |
525 | va_end(ap); |
526 | |
527 | free(msg->text); |
528 | msg->text = strdup(buf); |
529 | |
530 | // reset bounding box |
531 | msg->sizebox[0] = 0.0; |
532 | msg->sizebox[1] = 0.0; |
533 | msg->sizebox[2] = 0.0; |
534 | msg->sizebox[3] = 0.0; |
535 | |
536 | // reset display time counter |
537 | if (msg->state >= OSD_DISPLAY) |
538 | { |
539 | msg->state = OSD_DISPLAY; |
540 | msg->frames = 0; |
541 | } |
542 | |
543 | SDL_LockMutex(osd_list_lock); |
544 | if (!osd_message_valid(msg)) |
545 | list_add(&msg->list, &l_messageQueue); |
546 | SDL_UnlockMutex(osd_list_lock); |
547 | |
548 | } |
549 | |
550 | // remove message from message queue |
551 | static void osd_remove_message(osd_message_t *msg) |
552 | { |
553 | if (!l_OsdInitialized || !msg) return; |
554 | |
555 | free(msg->text); |
556 | msg->text = NULL; |
557 | list_del(&msg->list); |
558 | } |
559 | |
560 | // remove message from message queue and free it |
561 | extern "C" |
562 | void osd_delete_message(osd_message_t *msg) |
563 | { |
564 | if (!l_OsdInitialized || !msg) return; |
565 | |
566 | SDL_LockMutex(osd_list_lock); |
567 | osd_remove_message(msg); |
568 | free(msg); |
569 | SDL_UnlockMutex(osd_list_lock); |
570 | } |
571 | |
572 | // set message so it doesn't automatically expire in a certain number of frames. |
573 | extern "C" |
574 | void osd_message_set_static(osd_message_t *msg) |
575 | { |
576 | if (!l_OsdInitialized || !msg) return; |
577 | |
578 | msg->timeout[OSD_DISPLAY] = OSD_INFINITE_TIMEOUT; |
579 | msg->state = OSD_DISPLAY; |
580 | msg->frames = 0; |
581 | } |
582 | |
583 | // set message so it doesn't automatically get freed when finished transition. |
584 | extern "C" |
585 | void osd_message_set_user_managed(osd_message_t *msg) |
586 | { |
587 | if (!l_OsdInitialized || !msg) return; |
588 | |
589 | msg->user_managed = 1; |
590 | } |
591 | |
592 | // return message pointer if valid (in the OSD list), otherwise return NULL |
593 | static osd_message_t * osd_message_valid(osd_message_t *testmsg) |
594 | { |
595 | osd_message_t *msg; |
596 | |
597 | if (!l_OsdInitialized || !testmsg) return NULL; |
598 | |
599 | list_for_each_entry(msg, &l_messageQueue, osd_message_t, list) { |
600 | if (msg == testmsg) |
601 | return testmsg; |
602 | } |
603 | |
604 | return NULL; |
605 | } |
606 | |