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3719602c PC |
1 | /* Copyright (C) 2010-2020 The RetroArch team |
2 | * | |
3 | * --------------------------------------------------------------------------------------- | |
4 | * The following license statement only applies to this file (interface_stream.c). | |
5 | * --------------------------------------------------------------------------------------- | |
6 | * | |
7 | * Permission is hereby granted, free of charge, | |
8 | * to any person obtaining a copy of this software and associated documentation files (the "Software"), | |
9 | * to deal in the Software without restriction, including without limitation the rights to | |
10 | * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, | |
11 | * and to permit persons to whom the Software is furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, | |
16 | * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |
18 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, | |
19 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
21 | */ | |
22 | ||
23 | #include <stdlib.h> | |
24 | ||
25 | #include <streams/interface_stream.h> | |
26 | #include <streams/file_stream.h> | |
27 | #include <streams/memory_stream.h> | |
28 | #ifdef HAVE_CHD | |
29 | #include <streams/chd_stream.h> | |
30 | #endif | |
31 | #if defined(HAVE_ZLIB) | |
32 | #include <streams/rzip_stream.h> | |
33 | #endif | |
34 | #include <encodings/crc32.h> | |
35 | ||
36 | struct intfstream_internal | |
37 | { | |
38 | struct | |
39 | { | |
40 | RFILE *fp; | |
41 | } file; | |
42 | ||
43 | struct | |
44 | { | |
45 | memstream_t *fp; | |
46 | struct | |
47 | { | |
48 | uint8_t *data; | |
49 | uint64_t size; | |
50 | } buf; | |
51 | bool writable; | |
52 | } memory; | |
53 | #ifdef HAVE_CHD | |
54 | struct | |
55 | { | |
56 | chdstream_t *fp; | |
57 | int32_t track; | |
58 | } chd; | |
59 | #endif | |
60 | #if defined(HAVE_ZLIB) | |
61 | struct | |
62 | { | |
63 | rzipstream_t *fp; | |
64 | } rzip; | |
65 | #endif | |
66 | enum intfstream_type type; | |
67 | }; | |
68 | ||
69 | int64_t intfstream_get_size(intfstream_internal_t *intf) | |
70 | { | |
71 | if (!intf) | |
72 | return 0; | |
73 | ||
74 | switch (intf->type) | |
75 | { | |
76 | case INTFSTREAM_FILE: | |
77 | return filestream_get_size(intf->file.fp); | |
78 | case INTFSTREAM_MEMORY: | |
79 | return intf->memory.buf.size; | |
80 | case INTFSTREAM_CHD: | |
81 | #ifdef HAVE_CHD | |
82 | return chdstream_get_size(intf->chd.fp); | |
83 | #else | |
84 | break; | |
85 | #endif | |
86 | case INTFSTREAM_RZIP: | |
87 | #if defined(HAVE_ZLIB) | |
88 | return rzipstream_get_size(intf->rzip.fp); | |
89 | #else | |
90 | break; | |
91 | #endif | |
92 | } | |
93 | ||
94 | return 0; | |
95 | } | |
96 | ||
97 | bool intfstream_resize(intfstream_internal_t *intf, intfstream_info_t *info) | |
98 | { | |
99 | if (!intf || !info) | |
100 | return false; | |
101 | ||
102 | switch (intf->type) | |
103 | { | |
104 | case INTFSTREAM_FILE: | |
105 | break; | |
106 | case INTFSTREAM_MEMORY: | |
107 | intf->memory.buf.data = info->memory.buf.data; | |
108 | intf->memory.buf.size = info->memory.buf.size; | |
109 | ||
110 | memstream_set_buffer(intf->memory.buf.data, | |
111 | intf->memory.buf.size); | |
112 | break; | |
113 | case INTFSTREAM_CHD: | |
114 | #ifdef HAVE_CHD | |
115 | #endif | |
116 | break; | |
117 | case INTFSTREAM_RZIP: | |
118 | /* Unsupported */ | |
119 | return false; | |
120 | } | |
121 | ||
122 | return true; | |
123 | } | |
124 | ||
125 | bool intfstream_open(intfstream_internal_t *intf, const char *path, | |
126 | unsigned mode, unsigned hints) | |
127 | { | |
128 | if (!intf) | |
129 | return false; | |
130 | ||
131 | switch (intf->type) | |
132 | { | |
133 | case INTFSTREAM_FILE: | |
134 | intf->file.fp = filestream_open(path, mode, hints); | |
135 | if (!intf->file.fp) | |
136 | return false; | |
137 | break; | |
138 | case INTFSTREAM_MEMORY: | |
139 | intf->memory.fp = memstream_open(intf->memory.writable); | |
140 | if (!intf->memory.fp) | |
141 | return false; | |
142 | break; | |
143 | case INTFSTREAM_CHD: | |
144 | #ifdef HAVE_CHD | |
145 | intf->chd.fp = chdstream_open(path, intf->chd.track); | |
146 | if (!intf->chd.fp) | |
147 | return false; | |
148 | break; | |
149 | #else | |
150 | return false; | |
151 | #endif | |
152 | case INTFSTREAM_RZIP: | |
153 | #if defined(HAVE_ZLIB) | |
154 | intf->rzip.fp = rzipstream_open(path, mode); | |
155 | if (!intf->rzip.fp) | |
156 | return false; | |
157 | break; | |
158 | #else | |
159 | return false; | |
160 | #endif | |
161 | } | |
162 | ||
163 | return true; | |
164 | } | |
165 | ||
166 | int intfstream_flush(intfstream_internal_t *intf) | |
167 | { | |
168 | if (!intf) | |
169 | return -1; | |
170 | ||
171 | switch (intf->type) | |
172 | { | |
173 | case INTFSTREAM_FILE: | |
174 | return filestream_flush(intf->file.fp); | |
175 | case INTFSTREAM_MEMORY: | |
176 | case INTFSTREAM_CHD: | |
177 | case INTFSTREAM_RZIP: | |
178 | /* Should we stub this for these interfaces? */ | |
179 | break; | |
180 | } | |
181 | ||
182 | return 0; | |
183 | } | |
184 | ||
185 | int intfstream_close(intfstream_internal_t *intf) | |
186 | { | |
187 | if (!intf) | |
188 | return -1; | |
189 | ||
190 | switch (intf->type) | |
191 | { | |
192 | case INTFSTREAM_FILE: | |
193 | if (intf->file.fp) | |
194 | return filestream_close(intf->file.fp); | |
195 | return 0; | |
196 | case INTFSTREAM_MEMORY: | |
197 | if (intf->memory.fp) | |
198 | memstream_close(intf->memory.fp); | |
199 | return 0; | |
200 | case INTFSTREAM_CHD: | |
201 | #ifdef HAVE_CHD | |
202 | if (intf->chd.fp) | |
203 | chdstream_close(intf->chd.fp); | |
204 | #endif | |
205 | return 0; | |
206 | case INTFSTREAM_RZIP: | |
207 | #if defined(HAVE_ZLIB) | |
208 | if (intf->rzip.fp) | |
209 | return rzipstream_close(intf->rzip.fp); | |
210 | #endif | |
211 | return 0; | |
212 | } | |
213 | ||
214 | return -1; | |
215 | } | |
216 | ||
217 | void *intfstream_init(intfstream_info_t *info) | |
218 | { | |
219 | intfstream_internal_t *intf = NULL; | |
220 | if (!info) | |
221 | goto error; | |
222 | ||
223 | intf = (intfstream_internal_t*)malloc(sizeof(*intf)); | |
224 | ||
225 | if (!intf) | |
226 | goto error; | |
227 | ||
228 | intf->type = info->type; | |
229 | intf->file.fp = NULL; | |
230 | intf->memory.buf.data = NULL; | |
231 | intf->memory.buf.size = 0; | |
232 | intf->memory.fp = NULL; | |
233 | intf->memory.writable = false; | |
234 | #ifdef HAVE_CHD | |
235 | intf->chd.track = 0; | |
236 | intf->chd.fp = NULL; | |
237 | #endif | |
238 | #ifdef HAVE_ZLIB | |
239 | intf->rzip.fp = NULL; | |
240 | #endif | |
241 | ||
242 | switch (intf->type) | |
243 | { | |
244 | case INTFSTREAM_FILE: | |
245 | break; | |
246 | case INTFSTREAM_MEMORY: | |
247 | intf->memory.writable = info->memory.writable; | |
248 | if (!intfstream_resize(intf, info)) | |
249 | goto error; | |
250 | break; | |
251 | case INTFSTREAM_CHD: | |
252 | #ifdef HAVE_CHD | |
253 | intf->chd.track = info->chd.track; | |
254 | break; | |
255 | #else | |
256 | goto error; | |
257 | #endif | |
258 | case INTFSTREAM_RZIP: | |
259 | break; | |
260 | } | |
261 | ||
262 | return intf; | |
263 | ||
264 | error: | |
265 | if (intf) | |
266 | free(intf); | |
267 | return NULL; | |
268 | } | |
269 | ||
270 | int64_t intfstream_seek( | |
271 | intfstream_internal_t *intf, int64_t offset, int whence) | |
272 | { | |
273 | if (!intf) | |
274 | return -1; | |
275 | ||
276 | switch (intf->type) | |
277 | { | |
278 | case INTFSTREAM_FILE: | |
279 | { | |
280 | int seek_position = 0; | |
281 | switch (whence) | |
282 | { | |
283 | case SEEK_SET: | |
284 | seek_position = RETRO_VFS_SEEK_POSITION_START; | |
285 | break; | |
286 | case SEEK_CUR: | |
287 | seek_position = RETRO_VFS_SEEK_POSITION_CURRENT; | |
288 | break; | |
289 | case SEEK_END: | |
290 | seek_position = RETRO_VFS_SEEK_POSITION_END; | |
291 | break; | |
292 | } | |
293 | return (int64_t)filestream_seek(intf->file.fp, (int64_t)offset, | |
294 | seek_position); | |
295 | } | |
296 | case INTFSTREAM_MEMORY: | |
297 | return (int64_t)memstream_seek(intf->memory.fp, offset, whence); | |
298 | case INTFSTREAM_CHD: | |
299 | #ifdef HAVE_CHD | |
300 | return (int64_t)chdstream_seek(intf->chd.fp, offset, whence); | |
301 | #else | |
302 | break; | |
303 | #endif | |
304 | case INTFSTREAM_RZIP: | |
305 | /* Unsupported */ | |
306 | break; | |
307 | } | |
308 | ||
309 | return -1; | |
310 | } | |
311 | ||
312 | int64_t intfstream_read(intfstream_internal_t *intf, void *s, uint64_t len) | |
313 | { | |
314 | if (!intf) | |
315 | return 0; | |
316 | ||
317 | switch (intf->type) | |
318 | { | |
319 | case INTFSTREAM_FILE: | |
320 | return filestream_read(intf->file.fp, s, len); | |
321 | case INTFSTREAM_MEMORY: | |
322 | return memstream_read(intf->memory.fp, s, len); | |
323 | case INTFSTREAM_CHD: | |
324 | #ifdef HAVE_CHD | |
325 | return chdstream_read(intf->chd.fp, s, len); | |
326 | #else | |
327 | break; | |
328 | #endif | |
329 | case INTFSTREAM_RZIP: | |
330 | #if defined(HAVE_ZLIB) | |
331 | return rzipstream_read(intf->rzip.fp, s, len); | |
332 | #else | |
333 | break; | |
334 | #endif | |
335 | } | |
336 | ||
337 | return -1; | |
338 | } | |
339 | ||
340 | int64_t intfstream_write(intfstream_internal_t *intf, | |
341 | const void *s, uint64_t len) | |
342 | { | |
343 | if (!intf) | |
344 | return 0; | |
345 | ||
346 | switch (intf->type) | |
347 | { | |
348 | case INTFSTREAM_FILE: | |
349 | return filestream_write(intf->file.fp, s, len); | |
350 | case INTFSTREAM_MEMORY: | |
351 | return memstream_write(intf->memory.fp, s, len); | |
352 | case INTFSTREAM_CHD: | |
353 | return -1; | |
354 | case INTFSTREAM_RZIP: | |
355 | #if defined(HAVE_ZLIB) | |
356 | return rzipstream_write(intf->rzip.fp, s, len); | |
357 | #else | |
358 | return -1; | |
359 | #endif | |
360 | } | |
361 | ||
362 | return 0; | |
363 | } | |
364 | ||
365 | int intfstream_printf(intfstream_internal_t *intf, | |
366 | const char* format, ...) | |
367 | { | |
368 | va_list vl; | |
369 | int result; | |
370 | ||
371 | if (!intf) | |
372 | return 0; | |
373 | ||
374 | switch (intf->type) | |
375 | { | |
376 | case INTFSTREAM_FILE: | |
377 | va_start(vl, format); | |
378 | result = filestream_vprintf(intf->file.fp, format, vl); | |
379 | va_end(vl); | |
380 | return result; | |
381 | case INTFSTREAM_MEMORY: | |
382 | return -1; | |
383 | case INTFSTREAM_CHD: | |
384 | return -1; | |
385 | case INTFSTREAM_RZIP: | |
386 | #if defined(HAVE_ZLIB) | |
387 | va_start(vl, format); | |
388 | result = rzipstream_vprintf(intf->rzip.fp, format, vl); | |
389 | va_end(vl); | |
390 | return result; | |
391 | #else | |
392 | return -1; | |
393 | #endif | |
394 | } | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
399 | int64_t intfstream_get_ptr(intfstream_internal_t* intf) | |
400 | { | |
401 | if (!intf) | |
402 | return 0; | |
403 | ||
404 | switch (intf->type) | |
405 | { | |
406 | case INTFSTREAM_FILE: | |
407 | return -1; | |
408 | case INTFSTREAM_MEMORY: | |
409 | return memstream_get_ptr(intf->memory.fp); | |
410 | case INTFSTREAM_CHD: | |
411 | return -1; | |
412 | case INTFSTREAM_RZIP: | |
413 | return -1; | |
414 | } | |
415 | ||
416 | return 0; | |
417 | } | |
418 | ||
419 | char *intfstream_gets(intfstream_internal_t *intf, | |
420 | char *buffer, uint64_t len) | |
421 | { | |
422 | if (!intf) | |
423 | return NULL; | |
424 | ||
425 | switch (intf->type) | |
426 | { | |
427 | case INTFSTREAM_FILE: | |
428 | return filestream_gets(intf->file.fp, | |
429 | buffer, (size_t)len); | |
430 | case INTFSTREAM_MEMORY: | |
431 | return memstream_gets(intf->memory.fp, | |
432 | buffer, (size_t)len); | |
433 | case INTFSTREAM_CHD: | |
434 | #ifdef HAVE_CHD | |
435 | return chdstream_gets(intf->chd.fp, buffer, len); | |
436 | #else | |
437 | break; | |
438 | #endif | |
439 | case INTFSTREAM_RZIP: | |
440 | #if defined(HAVE_ZLIB) | |
441 | return rzipstream_gets(intf->rzip.fp, buffer, (size_t)len); | |
442 | #else | |
443 | break; | |
444 | #endif | |
445 | } | |
446 | ||
447 | return NULL; | |
448 | } | |
449 | ||
450 | int intfstream_getc(intfstream_internal_t *intf) | |
451 | { | |
452 | if (!intf) | |
453 | return -1; | |
454 | ||
455 | switch (intf->type) | |
456 | { | |
457 | case INTFSTREAM_FILE: | |
458 | return filestream_getc(intf->file.fp); | |
459 | case INTFSTREAM_MEMORY: | |
460 | return memstream_getc(intf->memory.fp); | |
461 | case INTFSTREAM_CHD: | |
462 | #ifdef HAVE_CHD | |
463 | return chdstream_getc(intf->chd.fp); | |
464 | #else | |
465 | break; | |
466 | #endif | |
467 | case INTFSTREAM_RZIP: | |
468 | #if defined(HAVE_ZLIB) | |
469 | return rzipstream_getc(intf->rzip.fp); | |
470 | #else | |
471 | break; | |
472 | #endif | |
473 | } | |
474 | ||
475 | return -1; | |
476 | } | |
477 | ||
478 | int64_t intfstream_tell(intfstream_internal_t *intf) | |
479 | { | |
480 | if (!intf) | |
481 | return -1; | |
482 | ||
483 | switch (intf->type) | |
484 | { | |
485 | case INTFSTREAM_FILE: | |
486 | return (int64_t)filestream_tell(intf->file.fp); | |
487 | case INTFSTREAM_MEMORY: | |
488 | return (int64_t)memstream_pos(intf->memory.fp); | |
489 | case INTFSTREAM_CHD: | |
490 | #ifdef HAVE_CHD | |
491 | return (int64_t)chdstream_tell(intf->chd.fp); | |
492 | #else | |
493 | break; | |
494 | #endif | |
495 | case INTFSTREAM_RZIP: | |
496 | #if defined(HAVE_ZLIB) | |
497 | return (int64_t)rzipstream_tell(intf->rzip.fp); | |
498 | #else | |
499 | break; | |
500 | #endif | |
501 | } | |
502 | ||
503 | return -1; | |
504 | } | |
505 | ||
506 | int intfstream_eof(intfstream_internal_t *intf) | |
507 | { | |
508 | if (!intf) | |
509 | return -1; | |
510 | ||
511 | switch (intf->type) | |
512 | { | |
513 | case INTFSTREAM_FILE: | |
514 | return filestream_eof(intf->file.fp); | |
515 | case INTFSTREAM_MEMORY: | |
516 | /* TODO: Add this functionality to | |
517 | * memory_stream interface */ | |
518 | break; | |
519 | case INTFSTREAM_CHD: | |
520 | /* TODO: Add this functionality to | |
521 | * chd_stream interface */ | |
522 | break; | |
523 | case INTFSTREAM_RZIP: | |
524 | #if defined(HAVE_ZLIB) | |
525 | return rzipstream_eof(intf->rzip.fp); | |
526 | #else | |
527 | break; | |
528 | #endif | |
529 | } | |
530 | ||
531 | return -1; | |
532 | } | |
533 | ||
534 | void intfstream_rewind(intfstream_internal_t *intf) | |
535 | { | |
536 | switch (intf->type) | |
537 | { | |
538 | case INTFSTREAM_FILE: | |
539 | filestream_rewind(intf->file.fp); | |
540 | break; | |
541 | case INTFSTREAM_MEMORY: | |
542 | memstream_rewind(intf->memory.fp); | |
543 | break; | |
544 | case INTFSTREAM_CHD: | |
545 | #ifdef HAVE_CHD | |
546 | chdstream_rewind(intf->chd.fp); | |
547 | #endif | |
548 | break; | |
549 | case INTFSTREAM_RZIP: | |
550 | #if defined(HAVE_ZLIB) | |
551 | rzipstream_rewind(intf->rzip.fp); | |
552 | #endif | |
553 | break; | |
554 | } | |
555 | } | |
556 | ||
557 | void intfstream_putc(intfstream_internal_t *intf, int c) | |
558 | { | |
559 | if (!intf) | |
560 | return; | |
561 | ||
562 | switch (intf->type) | |
563 | { | |
564 | case INTFSTREAM_FILE: | |
565 | filestream_putc(intf->file.fp, c); | |
566 | break; | |
567 | case INTFSTREAM_MEMORY: | |
568 | memstream_putc(intf->memory.fp, c); | |
569 | break; | |
570 | case INTFSTREAM_CHD: | |
571 | break; | |
572 | case INTFSTREAM_RZIP: | |
573 | #if defined(HAVE_ZLIB) | |
574 | rzipstream_putc(intf->rzip.fp, c); | |
575 | #else | |
576 | break; | |
577 | #endif | |
578 | } | |
579 | } | |
580 | ||
581 | uint32_t intfstream_get_offset_to_start(intfstream_internal_t *intf) | |
582 | { | |
583 | if (intf) | |
584 | { | |
585 | #ifdef HAVE_CHD | |
586 | if (intf->type == INTFSTREAM_CHD) | |
587 | return chdstream_get_track_start(intf->chd.fp); | |
588 | #endif | |
589 | } | |
590 | ||
591 | return 0; | |
592 | } | |
593 | ||
594 | uint32_t intfstream_get_frame_size(intfstream_internal_t *intf) | |
595 | { | |
596 | if (intf) | |
597 | { | |
598 | #ifdef HAVE_CHD | |
599 | if (intf->type == INTFSTREAM_CHD) | |
600 | return chdstream_get_frame_size(intf->chd.fp); | |
601 | #endif | |
602 | } | |
603 | ||
604 | return 0; | |
605 | } | |
606 | ||
607 | uint32_t intfstream_get_first_sector(intfstream_internal_t* intf) | |
608 | { | |
609 | if (intf) | |
610 | { | |
611 | #ifdef HAVE_CHD | |
612 | if (intf->type == INTFSTREAM_CHD) | |
613 | return chdstream_get_first_track_sector(intf->chd.fp); | |
614 | #endif | |
615 | } | |
616 | ||
617 | return 0; | |
618 | } | |
619 | ||
620 | bool intfstream_is_compressed(intfstream_internal_t *intf) | |
621 | { | |
622 | if (!intf) | |
623 | return false; | |
624 | ||
625 | switch (intf->type) | |
626 | { | |
627 | case INTFSTREAM_FILE: | |
628 | return false; | |
629 | case INTFSTREAM_MEMORY: | |
630 | return false; | |
631 | case INTFSTREAM_CHD: | |
632 | return true; | |
633 | case INTFSTREAM_RZIP: | |
634 | #if defined(HAVE_ZLIB) | |
635 | return rzipstream_is_compressed(intf->rzip.fp); | |
636 | #else | |
637 | break; | |
638 | #endif | |
639 | } | |
640 | ||
641 | return false; | |
642 | } | |
643 | ||
644 | bool intfstream_get_crc(intfstream_internal_t *intf, uint32_t *crc) | |
645 | { | |
646 | int64_t data_read = 0; | |
647 | uint32_t accumulator = 0; | |
648 | uint8_t buffer[4096]; | |
649 | ||
650 | if (!intf || !crc) | |
651 | return false; | |
652 | ||
653 | /* Ensure we start at the beginning of the file */ | |
654 | intfstream_rewind(intf); | |
655 | ||
656 | while ((data_read = intfstream_read(intf, buffer, sizeof(buffer))) > 0) | |
657 | accumulator = encoding_crc32(accumulator, buffer, (size_t)data_read); | |
658 | ||
659 | if (data_read < 0) | |
660 | return false; | |
661 | ||
662 | *crc = accumulator; | |
663 | ||
664 | /* Reset file to the beginning */ | |
665 | intfstream_rewind(intf); | |
666 | ||
667 | return true; | |
668 | } | |
669 | ||
670 | intfstream_t* intfstream_open_file(const char *path, | |
671 | unsigned mode, unsigned hints) | |
672 | { | |
673 | intfstream_info_t info; | |
674 | intfstream_t *fd = NULL; | |
675 | ||
676 | info.type = INTFSTREAM_FILE; | |
677 | fd = (intfstream_t*)intfstream_init(&info); | |
678 | ||
679 | if (!fd) | |
680 | return NULL; | |
681 | ||
682 | if (!intfstream_open(fd, path, mode, hints)) | |
683 | goto error; | |
684 | ||
685 | return fd; | |
686 | ||
687 | error: | |
688 | if (fd) | |
689 | { | |
690 | intfstream_close(fd); | |
691 | free(fd); | |
692 | } | |
693 | return NULL; | |
694 | } | |
695 | ||
696 | intfstream_t *intfstream_open_memory(void *data, | |
697 | unsigned mode, unsigned hints, uint64_t size) | |
698 | { | |
699 | intfstream_info_t info; | |
700 | intfstream_t *fd = NULL; | |
701 | ||
702 | info.type = INTFSTREAM_MEMORY; | |
703 | info.memory.buf.data = (uint8_t*)data; | |
704 | info.memory.buf.size = size; | |
705 | info.memory.writable = false; | |
706 | ||
707 | fd = (intfstream_t*)intfstream_init(&info); | |
708 | if (!fd) | |
709 | return NULL; | |
710 | ||
711 | if (!intfstream_open(fd, NULL, mode, hints)) | |
712 | goto error; | |
713 | ||
714 | return fd; | |
715 | ||
716 | error: | |
717 | if (fd) | |
718 | { | |
719 | intfstream_close(fd); | |
720 | free(fd); | |
721 | } | |
722 | return NULL; | |
723 | } | |
724 | ||
725 | intfstream_t *intfstream_open_writable_memory(void *data, | |
726 | unsigned mode, unsigned hints, uint64_t size) | |
727 | { | |
728 | intfstream_info_t info; | |
729 | intfstream_t *fd = NULL; | |
730 | ||
731 | info.type = INTFSTREAM_MEMORY; | |
732 | info.memory.buf.data = (uint8_t*)data; | |
733 | info.memory.buf.size = size; | |
734 | info.memory.writable = true; | |
735 | ||
736 | fd = (intfstream_t*)intfstream_init(&info); | |
737 | if (!fd) | |
738 | return NULL; | |
739 | ||
740 | if (!intfstream_open(fd, NULL, mode, hints)) | |
741 | goto error; | |
742 | ||
743 | return fd; | |
744 | ||
745 | error: | |
746 | if (fd) | |
747 | { | |
748 | intfstream_close(fd); | |
749 | free(fd); | |
750 | } | |
751 | return NULL; | |
752 | } | |
753 | ||
754 | intfstream_t *intfstream_open_chd_track(const char *path, | |
755 | unsigned mode, unsigned hints, int32_t track) | |
756 | { | |
757 | intfstream_info_t info; | |
758 | intfstream_t *fd = NULL; | |
759 | ||
760 | info.type = INTFSTREAM_CHD; | |
761 | info.chd.track = track; | |
762 | ||
763 | fd = (intfstream_t*)intfstream_init(&info); | |
764 | ||
765 | if (!fd) | |
766 | return NULL; | |
767 | ||
768 | if (!intfstream_open(fd, path, mode, hints)) | |
769 | goto error; | |
770 | ||
771 | return fd; | |
772 | ||
773 | error: | |
774 | if (fd) | |
775 | { | |
776 | intfstream_close(fd); | |
777 | free(fd); | |
778 | } | |
779 | return NULL; | |
780 | } | |
781 | ||
782 | intfstream_t* intfstream_open_rzip_file(const char *path, | |
783 | unsigned mode) | |
784 | { | |
785 | intfstream_info_t info; | |
786 | intfstream_t *fd = NULL; | |
787 | ||
788 | info.type = INTFSTREAM_RZIP; | |
789 | fd = (intfstream_t*)intfstream_init(&info); | |
790 | ||
791 | if (!fd) | |
792 | return NULL; | |
793 | ||
794 | if (!intfstream_open(fd, path, mode, RETRO_VFS_FILE_ACCESS_HINT_NONE)) | |
795 | goto error; | |
796 | ||
797 | return fd; | |
798 | ||
799 | error: | |
800 | if (fd) | |
801 | { | |
802 | intfstream_close(fd); | |
803 | free(fd); | |
804 | } | |
805 | return NULL; | |
806 | } |