ReactOS 0.4.15-dev-8235-gcd88a97
readers.c
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1/* TODO: Check all read calls (in loops, especially!) for return value 0 (EOF)! */
2/* Check if get_fileinfo should read ID3 info or not, seems a bit out of place here. */
3/* #define EXTRA_DEBUG */
4/*
5 readers.c: reading input data
6
7 copyright ?-2020 by the mpg123 project - free software under the terms of the LGPL 2.1
8 see COPYING and AUTHORS files in distribution or http://mpg123.org
9 initially written by Michael Hipp
10*/
11
12#include "mpg123lib_intern.h"
13#include <sys/stat.h>
14#include <fcntl.h>
15#include <errno.h>
16/* For select(), I need select.h according to POSIX 2001, else: sys/time.h sys/types.h unistd.h (the latter two included in compat.h already). */
17#ifdef HAVE_SYS_SELECT_H
18#include <sys/select.h>
19#endif
20#ifdef HAVE_SYS_TIME_H
21#include <sys/time.h>
22#endif
23#ifdef _MSC_VER
24#include <io.h>
25#endif
26
27#include "compat.h"
28#include "debug.h"
29
30static int default_init(mpg123_handle *fr);
32static ssize_t posix_read(int fd, void *buf, size_t count){ return read(fd, buf, count); }
33static off_t posix_lseek(int fd, off_t offset, int whence){ return lseek(fd, offset, whence); }
34static off_t nix_lseek(int fd, off_t offset, int whence){ return -1; }
35
36static ssize_t plain_fullread(mpg123_handle *fr,unsigned char *buf, ssize_t count);
37
38/* Wrapper to decide between descriptor-based and external handle-based I/O. */
39static off_t io_seek(struct reader_data *rdat, off_t offset, int whence);
40static ssize_t io_read(struct reader_data *rdat, void *buf, size_t count);
41
42#ifndef NO_FEEDER
43/* Bufferchain methods. */
44static void bc_init(struct bufferchain *bc);
45static void bc_reset(struct bufferchain *bc);
46static int bc_append(struct bufferchain *bc, ssize_t size);
47#if 0
48static void bc_drop(struct bufferchain *bc);
49#endif
50static int bc_add(struct bufferchain *bc, const unsigned char *data, ssize_t size);
51static ssize_t bc_give(struct bufferchain *bc, unsigned char *out, ssize_t size);
52static ssize_t bc_skip(struct bufferchain *bc, ssize_t count);
54static void bc_forget(struct bufferchain *bc);
55#endif
56
57/* A normal read and a read with timeout. */
58static ssize_t plain_read(mpg123_handle *fr, void *buf, size_t count)
59{
60 ssize_t ret = io_read(&fr->rdat, buf, count);
61 if(VERBOSE3) debug2("read %li bytes of %li", (long)ret, (long)count);
62 return ret;
63}
64
65#ifdef TIMEOUT_READ
66
67/* Wait for data becoming available, allowing soft-broken network connection to die
68 This is needed for Shoutcast servers that have forgotten about us while connection was temporarily down. */
69static ssize_t timeout_read(mpg123_handle *fr, void *buf, size_t count)
70{
71 struct timeval tv;
72 ssize_t ret = 0;
73 fd_set fds;
74 tv.tv_sec = fr->rdat.timeout_sec;
75 tv.tv_usec = 0;
76 FD_ZERO(&fds);
77 FD_SET(fr->rdat.filept, &fds);
78 ret = select(fr->rdat.filept+1, &fds, NULL, NULL, &tv);
79 /* This works only with "my" read function. Not user-replaced. */
80 if(ret > 0) ret = read(fr->rdat.filept, buf, count);
81 else
82 {
83 ret=-1; /* no activity is the error */
84 if(NOQUIET) error("stream timed out");
85 }
86 return ret;
87}
88#endif
89
90#ifndef NO_ICY
91/* stream based operation with icy meta data*/
92static ssize_t icy_fullread(mpg123_handle *fr, unsigned char *buf, ssize_t count)
93{
94 ssize_t ret,cnt;
95 cnt = 0;
96 if(fr->rdat.flags & READER_SEEKABLE)
97 {
98 if(NOQUIET) error("mpg123 programmer error: I don't do ICY on seekable streams.");
99 return -1;
100 }
101 /*
102 There used to be a check for expected file end here (length value or ID3 flag).
103 This is not needed:
104 1. EOF is indicated by fdread returning zero bytes anyway.
105 2. We get false positives of EOF for either files that grew or
106 3. ... files that have ID3v1 tags in between (stream with intro).
107 */
108
109 while(cnt < count)
110 {
111 /* all icy code is inside this if block, everything else is the plain fullread we know */
112 /* debug1("read: %li left", (long) count-cnt); */
113 if(fr->icy.next < count-cnt)
114 {
115 unsigned char temp_buff;
116 size_t meta_size;
117 ssize_t cut_pos;
118
119 /* we are near icy-metaint boundary, read up to the boundary */
120 if(fr->icy.next > 0)
121 {
122 cut_pos = fr->icy.next;
123 ret = fr->rdat.fdread(fr,buf+cnt,cut_pos);
124 if(ret < 1)
125 {
126 if(ret == 0) break; /* Just EOF. */
127 if(NOQUIET) error("icy boundary read");
128
129 return READER_ERROR;
130 }
131
132 if(!(fr->rdat.flags & READER_BUFFERED)) fr->rdat.filepos += ret;
133 cnt += ret;
134 fr->icy.next -= ret;
135 if(fr->icy.next > 0)
136 {
137 debug1("another try... still %li left", (long)fr->icy.next);
138 continue;
139 }
140 }
141 /* now off to read icy data */
142
143 /* one byte icy-meta size (must be multiplied by 16 to get icy-meta length) */
144
145 ret = fr->rdat.fdread(fr,&temp_buff,1); /* Getting one single byte hast to suceed. */
146 if(ret < 0){ if(NOQUIET) error("reading icy size"); return READER_ERROR; }
147 if(ret == 0) break;
148
149 debug2("got meta-size byte: %u, at filepos %li", temp_buff, (long)fr->rdat.filepos );
150 if(!(fr->rdat.flags & READER_BUFFERED)) fr->rdat.filepos += ret; /* 1... */
151
152 if((meta_size = ((size_t) temp_buff) * 16))
153 {
154 /* we have got some metadata */
155 char *meta_buff;
156 /* TODO: Get rid of this malloc ... perhaps hooking into the reader buffer pool? */
157 meta_buff = malloc(meta_size+1);
158 if(meta_buff != NULL)
159 {
160 ssize_t left = meta_size;
161 while(left > 0)
162 {
163 ret = fr->rdat.fdread(fr,meta_buff+meta_size-left,left);
164 /* 0 is error here, too... there _must_ be the ICY data, the server promised! */
165 if(ret < 1){ if(NOQUIET) error("reading icy-meta"); return READER_ERROR; }
166 left -= ret;
167 }
168 meta_buff[meta_size] = 0; /* string paranoia */
169 if(!(fr->rdat.flags & READER_BUFFERED)) fr->rdat.filepos += ret;
170
171 if(fr->icy.data) free(fr->icy.data);
172 fr->icy.data = meta_buff;
174 debug2("icy-meta: %s size: %d bytes", fr->icy.data, (int)meta_size);
175 }
176 else
177 {
178 if(NOQUIET) error1("cannot allocate memory for meta_buff (%lu bytes) ... trying to skip the metadata!", (unsigned long)meta_size);
179 fr->rd->skip_bytes(fr, meta_size);
180 }
181 }
182 fr->icy.next = fr->icy.interval;
183 }
184 else
185 {
186 ret = plain_fullread(fr, buf+cnt, count-cnt);
187 if(ret < 0){ if(NOQUIET) error1("reading the rest of %li", (long)(count-cnt)); return READER_ERROR; }
188 if(ret == 0) break;
189
190 cnt += ret;
191 fr->icy.next -= ret;
192 }
193 }
194 /* debug1("done reading, got %li", (long)cnt); */
195 return cnt;
196}
197#else
198#define icy_fullread NULL
199#endif /* NO_ICY */
200
201/* stream based operation */
203{
204 ssize_t ret,cnt=0;
205
206#ifdef EXTRA_DEBUG
207 debug1("plain fullread of %"SSIZE_P, (size_p)count);
208#endif
209 /*
210 There used to be a check for expected file end here (length value or ID3 flag).
211 This is not needed:
212 1. EOF is indicated by fdread returning zero bytes anyway.
213 2. We get false positives of EOF for either files that grew or
214 3. ... files that have ID3v1 tags in between (stream with intro).
215 */
216 while(cnt < count)
217 {
218 ret = fr->rdat.fdread(fr,buf+cnt,count-cnt);
219 if(ret < 0) return READER_ERROR;
220 if(ret == 0) break;
221 if(!(fr->rdat.flags & READER_BUFFERED)) fr->rdat.filepos += ret;
222 cnt += ret;
223 }
224 return cnt;
225}
226
227static off_t stream_lseek(mpg123_handle *fr, off_t pos, int whence)
228{
229 off_t ret;
230 ret = io_seek(&fr->rdat, pos, whence);
231 if (ret >= 0) fr->rdat.filepos = ret;
232 else
233 {
235 ret = READER_ERROR; /* not the original value */
236 }
237 return ret;
238}
239
241{
242 if(fr->rdat.flags & READER_FD_OPENED) compat_close(fr->rdat.filept);
243
244 fr->rdat.filept = 0;
245
246#ifndef NO_FEEDER
247 if(fr->rdat.flags & READER_BUFFERED) bc_reset(&fr->rdat.buffer);
248#endif
249 if(fr->rdat.flags & READER_HANDLEIO)
250 {
251 if(fr->rdat.cleanup_handle != NULL) fr->rdat.cleanup_handle(fr->rdat.iohandle);
252
253 fr->rdat.iohandle = NULL;
254 }
255}
256
257static int stream_seek_frame(mpg123_handle *fr, off_t newframe)
258{
259 debug2("seek_frame to %"OFF_P" (from %"OFF_P")", (off_p)newframe, (off_p)fr->num);
260 /* Seekable streams can go backwards and jump forwards.
261 Non-seekable streams still can go forward, just not jump. */
262 if((fr->rdat.flags & READER_SEEKABLE) || (newframe >= fr->num))
263 {
264 off_t preframe; /* a leading frame we jump to */
265 off_t seek_to; /* the byte offset we want to reach */
266 off_t to_skip; /* bytes to skip to get there (can be negative) */
267 /*
268 now seek to nearest leading index position and read from there until newframe is reached.
269 We use skip_bytes, which handles seekable and non-seekable streams
270 (the latter only for positive offset, which we ensured before entering here).
271 */
272 seek_to = frame_index_find(fr, newframe, &preframe);
273 /* No need to seek to index position if we are closer already.
274 But I am picky about fr->num == newframe, play safe by reading the frame again.
275 If you think that's stupid, don't call a seek to the current frame. */
276 if(fr->num >= newframe || fr->num < preframe)
277 {
278 to_skip = seek_to - fr->rd->tell(fr);
279 if(fr->rd->skip_bytes(fr, to_skip) != seek_to)
280 return READER_ERROR;
281
282 debug2("going to %lu; just got %lu", (long unsigned)newframe, (long unsigned)preframe);
283 fr->num = preframe-1; /* Watch out! I am going to read preframe... fr->num should indicate the frame before! */
284 }
285 while(fr->num < newframe)
286 {
287 /* try to be non-fatal now... frameNum only gets advanced on success anyway */
288 if(!read_frame(fr)) break;
289 }
290 /* Now the wanted frame should be ready for decoding. */
291 debug1("arrived at %lu", (long unsigned)fr->num);
292
293 return MPG123_OK;
294 }
295 else
296 {
297 fr->err = MPG123_NO_SEEK;
298 return READER_ERROR; /* invalid, no seek happened */
299 }
300}
301
302/* return FALSE on error, TRUE on success, READER_MORE on occasion */
303static int generic_head_read(mpg123_handle *fr,unsigned long *newhead)
304{
305 unsigned char hbuf[4];
306 int ret = fr->rd->fullread(fr,hbuf,4);
307 if(ret == READER_MORE) return ret;
308 if(ret != 4) return FALSE;
309
310 *newhead = ((unsigned long) hbuf[0] << 24) |
311 ((unsigned long) hbuf[1] << 16) |
312 ((unsigned long) hbuf[2] << 8) |
313 (unsigned long) hbuf[3];
314
315 return TRUE;
316}
317
318/* return FALSE on error, TRUE on success, READER_MORE on occasion */
319static int generic_head_shift(mpg123_handle *fr,unsigned long *head)
320{
321 unsigned char hbuf;
322 int ret = fr->rd->fullread(fr,&hbuf,1);
323 if(ret == READER_MORE) return ret;
324 if(ret != 1) return FALSE;
325
326 *head <<= 8;
327 *head |= hbuf;
328 *head &= 0xffffffff;
329 return TRUE;
330}
331
332/* returns reached position... negative ones are bad... */
334{
335 if(fr->rdat.flags & READER_SEEKABLE)
336 {
338 return (ret < 0) ? READER_ERROR : ret;
339 }
340 else if(len >= 0)
341 {
342 unsigned char buf[1024]; /* ThOr: Compaq cxx complained and it makes sense to me... or should one do a cast? What for? */
343 ssize_t ret;
344 while (len > 0)
345 {
346 ssize_t num = len < (off_t)sizeof(buf) ? (ssize_t)len : (ssize_t)sizeof(buf);
347 ret = fr->rd->fullread(fr, buf, num);
348 if (ret < 0) return ret;
349 else if(ret == 0) break; /* EOF... an error? interface defined to tell the actual position... */
350 len -= ret;
351 }
352 return fr->rd->tell(fr);
353 }
354#ifndef NO_FEEDER
355 else if(fr->rdat.flags & READER_BUFFERED)
356 { /* Perhaps we _can_ go a bit back. */
357 if(fr->rdat.buffer.pos >= -len)
358 {
359 fr->rdat.buffer.pos += len;
360 return fr->rd->tell(fr);
361 }
362 else
363 {
364 fr->err = MPG123_NO_SEEK;
365 return READER_ERROR;
366 }
367 }
368#endif
369 else
370 {
371 fr->err = MPG123_NO_SEEK;
372 return READER_ERROR;
373 }
374}
375
376/* Return 0 on success... */
378{
379 off_t want = fr->rd->tell(fr)-bytes;
380 if(want < 0) return READER_ERROR;
381 if(stream_skip_bytes(fr,-bytes) != want) return READER_ERROR;
382
383 return 0;
384}
385
386
387/* returns size on success... otherwise an error code < 0 */
388static int generic_read_frame_body(mpg123_handle *fr,unsigned char *buf, int size)
389{
390 long l;
391 l=fr->rd->fullread(fr,buf,size);
392 return (l >= 0 && l<size) ? READER_ERROR : l;
393}
394
396{
397#ifndef NO_FEEDER
398 if(fr->rdat.flags & READER_BUFFERED)
399 fr->rdat.filepos = fr->rdat.buffer.fileoff+fr->rdat.buffer.pos;
400#endif
401
402 return fr->rdat.filepos;
403}
404
405/* This does not (fully) work for non-seekable streams... You have to check for that flag, pal! */
407{
408 if(fr->rdat.flags & READER_SEEKABLE)
409 {
410 fr->rdat.filepos = stream_lseek(fr,0,SEEK_SET);
411#ifndef NO_FEEDER
412 fr->rdat.buffer.fileoff = fr->rdat.filepos;
413#endif
414 }
415#ifndef NO_FEEDER
416 if(fr->rdat.flags & READER_BUFFERED)
417 {
418 fr->rdat.buffer.pos = 0;
419 fr->rdat.buffer.firstpos = 0;
420 fr->rdat.filepos = fr->rdat.buffer.fileoff;
421 }
422#endif
423}
424
425/*
426 * returns length of a file (if filept points to a file)
427 * reads the last 128 bytes information into buffer
428 * ... that is not totally safe...
429 */
431{
432 off_t len;
433
434 if((len=io_seek(&fr->rdat,0,SEEK_END)) < 0)
435 {
436 debug("cannot seek to end");
437 return -1;
438 } else if(len >= 128)
439 {
440 if(io_seek(&fr->rdat,-128,SEEK_END) < 0)
441 {
442 debug("cannot seek to END-128");
443 return -1;
444 }
445 if(fr->rd->fullread(fr,(unsigned char *)fr->id3buf,128) != 128)
446 {
447 debug("cannot read ID3v1?!");
448 return -1;
449 }
450 if(!strncmp((char*)fr->id3buf,"TAG",3)) len -= 128;
451 } else
452 {
453 debug("stream too short for ID3");
454 }
455
456 if(io_seek(&fr->rdat,0,SEEK_SET) < 0)
457 {
458 debug("cannot seek back");
459 return -1;
460 }
461
462 debug1("returning length: %"OFF_P, (off_p)len);
463 return len;
464}
465
466#ifndef NO_FEEDER
467/* Methods for the buffer chain, mainly used for feed reader, but not just that. */
468
469
470static struct buffy* buffy_new(size_t size, size_t minsize)
471{
472 struct buffy *newbuf;
473 newbuf = malloc(sizeof(struct buffy));
474 if(newbuf == NULL) return NULL;
475
476 newbuf->realsize = size > minsize ? size : minsize;
477 newbuf->data = malloc(newbuf->realsize);
478 if(newbuf->data == NULL)
479 {
480 free(newbuf);
481 return NULL;
482 }
483 newbuf->size = 0;
484 newbuf->next = NULL;
485 return newbuf;
486}
487
488static void buffy_del(struct buffy* buf)
489{
490 if(buf)
491 {
492 free(buf->data);
493 free(buf);
494 }
495}
496
497/* Delete this buffy and all following buffies. */
498static void buffy_del_chain(struct buffy* buf)
499{
500 while(buf)
501 {
502 struct buffy* next = buf->next;
503 buffy_del(buf);
504 buf = next;
505 }
506}
507
508void bc_prepare(struct bufferchain *bc, size_t pool_size, size_t bufblock)
509{
510 bc_poolsize(bc, pool_size, bufblock);
511 bc->pool = NULL;
512 bc->pool_fill = 0;
513 bc_init(bc); /* Ensure that members are zeroed for read-only use. */
514}
515
516size_t bc_fill(struct bufferchain *bc)
517{
518 return (size_t)(bc->size - bc->pos);
519}
520
521void bc_poolsize(struct bufferchain *bc, size_t pool_size, size_t bufblock)
522{
523 bc->pool_size = pool_size;
524 bc->bufblock = bufblock;
525}
526
528{
529 buffy_del_chain(bc->pool);
530 bc->pool = NULL;
531 bc->pool_fill = 0;
532}
533
534/* Fetch a buffer from the pool (if possible) or create one. */
535static struct buffy* bc_alloc(struct bufferchain *bc, size_t size)
536{
537 /* Easy route: Just try the first available buffer.
538 Size does not matter, it's only a hint for creation of new buffers. */
539 if(bc->pool)
540 {
541 struct buffy *buf = bc->pool;
542 bc->pool = buf->next;
543 buf->next = NULL; /* That shall be set to a sensible value later. */
544 buf->size = 0;
545 --bc->pool_fill;
546 debug2("bc_alloc: picked %p from pool (fill now %"SIZE_P")", (void*)buf, (size_p)bc->pool_fill);
547 return buf;
548 }
549 else return buffy_new(size, bc->bufblock);
550}
551
552/* Either stuff the buffer back into the pool or free it for good. */
553static void bc_free(struct bufferchain *bc, struct buffy* buf)
554{
555 if(!buf) return;
556
557 if(bc->pool_fill < bc->pool_size)
558 {
559 buf->next = bc->pool;
560 bc->pool = buf;
561 ++bc->pool_fill;
562 }
563 else buffy_del(buf);
564}
565
566/* Make the buffer count in the pool match the pool size. */
567static int bc_fill_pool(struct bufferchain *bc)
568{
569 /* Remove superfluous ones. */
570 while(bc->pool_fill > bc->pool_size)
571 {
572 /* Lazyness: Just work on the front. */
573 struct buffy* buf = bc->pool;
574 bc->pool = buf->next;
575 buffy_del(buf);
576 --bc->pool_fill;
577 }
578
579 /* Add missing ones. */
580 while(bc->pool_fill < bc->pool_size)
581 {
582 /* Again, just work on the front. */
583 struct buffy* buf;
584 buf = buffy_new(0, bc->bufblock); /* Use default block size. */
585 if(!buf) return -1;
586
587 buf->next = bc->pool;
588 bc->pool = buf;
589 ++bc->pool_fill;
590 }
591
592 return 0;
593}
594
595
596static void bc_init(struct bufferchain *bc)
597{
598 bc->first = NULL;
599 bc->last = bc->first;
600 bc->size = 0;
601 bc->pos = 0;
602 bc->firstpos = 0;
603 bc->fileoff = 0;
604}
605
606static void bc_reset(struct bufferchain *bc)
607{
608 /* Free current chain, possibly stuffing back into the pool. */
609 while(bc->first)
610 {
611 struct buffy* buf = bc->first;
612 bc->first = buf->next;
613 bc_free(bc, buf);
614 }
615 bc_fill_pool(bc); /* Ignoring an error here... */
616 bc_init(bc);
617}
618
619/* Create a new buffy at the end to be filled. */
620static int bc_append(struct bufferchain *bc, ssize_t size)
621{
622 struct buffy *newbuf;
623 if(size < 1) return -1;
624
625 newbuf = bc_alloc(bc, size);
626 if(newbuf == NULL) return -2;
627
628 if(bc->last != NULL) bc->last->next = newbuf;
629 else if(bc->first == NULL) bc->first = newbuf;
630
631 bc->last = newbuf;
632 debug3("bc_append: new last buffer %p with %"SSIZE_P" B (really %"SSIZE_P")", (void*)bc->last, (ssize_p)bc->last->size, (ssize_p)bc->last->realsize);
633 return 0;
634}
635
636/* Append a new buffer and copy content to it. */
637static int bc_add(struct bufferchain *bc, const unsigned char *data, ssize_t size)
638{
639 int ret = 0;
640 ssize_t part = 0;
641 debug2("bc_add: adding %"SSIZE_P" bytes at %"OFF_P, (ssize_p)size, (off_p)(bc->fileoff+bc->size));
642 if(size >=4) debug4("first bytes: %02x %02x %02x %02x", data[0], data[1], data[2], data[3]);
643
644 while(size > 0)
645 {
646 /* Try to fill up the last buffer block. */
647 if(bc->last != NULL && bc->last->size < bc->last->realsize)
648 {
649 part = bc->last->realsize - bc->last->size;
650 if(part > size) part = size;
651
652 debug2("bc_add: adding %"SSIZE_P" B to existing block %p", (ssize_p)part, (void*)bc->last);
653 memcpy(bc->last->data+bc->last->size, data, part);
654 bc->last->size += part;
655 size -= part;
656 bc->size += part;
657 data += part;
658 }
659
660 /* If there is still data left, put it into a new buffer block. */
661 if(size > 0 && (ret = bc_append(bc, size)) != 0)
662 break;
663 }
664
665 return ret;
666}
667
668/* Common handler for "You want more than I can give." situation. */
670{
671 debug3("hit end, back to beginning (%li - %li < %li)", (long)bc->size, (long)bc->pos, (long)bc->size);
672 /* go back to firstpos, undo the previous reads */
673 bc->pos = bc->firstpos;
674 return READER_MORE;
675}
676
677/* Give some data, advancing position but not forgetting yet. */
678static ssize_t bc_give(struct bufferchain *bc, unsigned char *out, ssize_t size)
679{
680 struct buffy *b = bc->first;
681 ssize_t gotcount = 0;
682 ssize_t offset = 0;
683 if(bc->size - bc->pos < size) return bc_need_more(bc);
684
685 /* find the current buffer */
686 while(b != NULL && (offset + b->size) <= bc->pos)
687 {
688 offset += b->size;
689 b = b->next;
690 }
691 /* now start copying from there */
692 while(gotcount < size && (b != NULL))
693 {
694 ssize_t loff = bc->pos - offset;
695 ssize_t chunk = size - gotcount; /* amount of bytes to get from here... */
696 if(chunk > b->size - loff) chunk = b->size - loff;
697
698#ifdef EXTRA_DEBUG
699 debug3("copying %liB from %p+%li",(long)chunk, b->data, (long)loff);
700#endif
701
702 memcpy(out+gotcount, b->data+loff, chunk);
703 gotcount += chunk;
704 bc->pos += chunk;
705 offset += b->size;
706 b = b->next;
707 }
708#ifdef EXTRA_DEBUG
709 debug2("got %li bytes, pos advanced to %li", (long)gotcount, (long)bc->pos);
710#endif
711
712 return gotcount;
713}
714
715/* Skip some bytes and return the new position.
716 The buffers are still there, just the read pointer is moved! */
718{
719 if(count >= 0)
720 {
721 if(bc->size - bc->pos < count) return bc_need_more(bc);
722 else return bc->pos += count;
723 }
724 else return READER_ERROR;
725}
726
728{
729 if(count >= 0 && count <= bc->pos) return bc->pos -= count;
730 else return READER_ERROR;
731}
732
733/* Throw away buffies that we passed. */
734static void bc_forget(struct bufferchain *bc)
735{
736 struct buffy *b = bc->first;
737 /* free all buffers that are def'n'tly outdated */
738 /* we have buffers until filepos... delete all buffers fully below it */
739 if(b) debug2("bc_forget: block %lu pos %lu", (unsigned long)b->size, (unsigned long)bc->pos);
740 else debug("forget with nothing there!");
741
742 while(b != NULL && bc->pos >= b->size)
743 {
744 struct buffy *n = b->next; /* != NULL or this is indeed the end and the last cycle anyway */
745 if(n == NULL) bc->last = NULL; /* Going to delete the last buffy... */
746 bc->fileoff += b->size;
747 bc->pos -= b->size;
748 bc->size -= b->size;
749
750 debug5("bc_forget: forgot %p with %lu, pos=%li, size=%li, fileoff=%li", (void*)b->data, (long)b->size, (long)bc->pos, (long)bc->size, (long)bc->fileoff);
751
752 bc_free(bc, b);
753 b = n;
754 }
755 bc->first = b;
756 bc->firstpos = bc->pos;
757}
758
759/* reader for input via manually provided buffers */
760
762{
763 bc_init(&fr->rdat.buffer);
764 bc_fill_pool(&fr->rdat.buffer);
765 fr->rdat.filelen = 0;
766 fr->rdat.filepos = 0;
767 fr->rdat.flags |= READER_BUFFERED;
768 return 0;
769}
770
771/* externally called function, returns 0 on success, -1 on error */
772int feed_more(mpg123_handle *fr, const unsigned char *in, long count)
773{
774 int ret = 0;
775 if(VERBOSE3) debug("feed_more");
776 if((ret = bc_add(&fr->rdat.buffer, in, count)) != 0)
777 {
779 if(NOQUIET) error1("Failed to add buffer, return: %i", ret);
780 }
781 else /* Not talking about filelen... that stays at 0. */
782
783 if(VERBOSE3) debug3("feed_more: %p %luB bufsize=%lu", fr->rdat.buffer.last->data,
784 (unsigned long)fr->rdat.buffer.last->size, (unsigned long)fr->rdat.buffer.size);
785 return ret;
786}
787
788static ssize_t feed_read(mpg123_handle *fr, unsigned char *out, ssize_t count)
789{
790 ssize_t gotcount = bc_give(&fr->rdat.buffer, out, count);
791 if(gotcount >= 0 && gotcount != count) return READER_ERROR;
792 else return gotcount;
793}
794
795/* returns reached position... negative ones are bad... */
797{
798 /* This is either the new buffer offset or some negative error value. */
799 off_t res = bc_skip(&fr->rdat.buffer, (ssize_t)len);
800 if(res < 0) return res;
801
802 return fr->rdat.buffer.fileoff+res;
803}
804
806{
807 if(bytes >=0)
808 return bc_seekback(&fr->rdat.buffer, (ssize_t)bytes) >= 0 ? 0 : READER_ERROR;
809 else
810 return feed_skip_bytes(fr, -bytes) >= 0 ? 0 : READER_ERROR;
811}
812
814
815/* Not just for feed reader, also for self-feeding buffered reader. */
817{
818 bc_forget(&fr->rdat.buffer);
819 fr->rdat.filepos = fr->rdat.buffer.fileoff + fr->rdat.buffer.pos;
820}
821
823{
824 struct bufferchain *bc = &fr->rdat.buffer;
825 if(pos >= bc->fileoff && pos-bc->fileoff < bc->size)
826 { /* We have the position! */
827 bc->pos = (ssize_t)(pos - bc->fileoff);
828 debug1("feed_set_pos inside, next feed from %"OFF_P, (off_p)(bc->fileoff+bc->size));
829 return bc->fileoff+bc->size; /* Next input after end of buffer... */
830 }
831 else
832 { /* I expect to get the specific position on next feed. Forget what I have now. */
833 bc_reset(bc);
834 bc->fileoff = pos;
835 debug1("feed_set_pos outside, buffer reset, next feed from %"OFF_P, (off_p)pos);
836 return pos; /* Next input from exactly that position. */
837 }
838}
839
840/* The specific stuff for buffered stream reader. */
841
843{
844 struct bufferchain *bc = &fr->rdat.buffer;
845 ssize_t gotcount;
846 if(VERBOSE3)
847 mdebug("buffered_fullread: want %zd", count);
848 if(bc->size - bc->pos < count)
849 { /* Add more stuff to buffer. If hitting end of file, adjust count. */
850 unsigned char readbuf[4096];
851 ssize_t need = count - (bc->size-bc->pos);
852 while(need>0)
853 {
854 int ret;
855 ssize_t got = fr->rdat.fullread(fr, readbuf, sizeof(readbuf));
856 if(got < 0)
857 {
858 if(NOQUIET) error("buffer reading");
859 return READER_ERROR;
860 }
861
862 if(VERBOSE3) debug1("buffered_fullread: buffering %li bytes from stream (if > 0)", (long)got);
863 if(got > 0 && (ret=bc_add(bc, readbuf, got)) != 0)
864 {
865 if(NOQUIET) error1("unable to add to chain, return: %i", ret);
866 return READER_ERROR;
867 }
868
869 need -= got; /* May underflow here... */
870 if(got < sizeof(readbuf)) /* That naturally catches got == 0, too. */
871 {
872 if(VERBOSE3) fprintf(stderr, "Note: Input data end.\n");
873 break; /* End. */
874 }
875 }
876 if(bc->size - bc->pos < count)
877 count = bc->size - bc->pos; /* We want only what we got. */
878 }
879 gotcount = bc_give(bc, out, count);
880 if(VERBOSE3)
881 mdebug("buffered_fullread: got %zd", gotcount);
882 if(gotcount != count){ if(NOQUIET) error("gotcount != count"); return READER_ERROR; }
883 else return gotcount;
884}
885#else
886int feed_more(mpg123_handle *fr, const unsigned char *in, long count)
887{
889 return -1;
890}
892{
894 return -1;
895}
896#endif /* NO_FEEDER */
897
898/*****************************************************************
899 * read frame helper
900 */
901
902#define bugger_off { mh->err = MPG123_NO_READER; return MPG123_ERR; }
904static void bad_close(mpg123_handle *mh){}
906static int bad_head_read(mpg123_handle *mh, unsigned long *newhead) bugger_off
907static int bad_head_shift(mpg123_handle *mh, unsigned long *head) bugger_off
908static off_t bad_skip_bytes(mpg123_handle *mh, off_t len) bugger_off
909static int bad_read_frame_body(mpg123_handle *mh, unsigned char *data, int size) bugger_off
910static int bad_back_bytes(mpg123_handle *mh, off_t bytes) bugger_off
912static off_t bad_tell(mpg123_handle *mh) bugger_off
913static void bad_rewind(mpg123_handle *mh){}
914#undef bugger_off
915
916#define READER_STREAM 0
917#define READER_ICY_STREAM 1
918#define READER_FEED 2
919#define READER_BUF_STREAM 3
920#define READER_BUF_ICY_STREAM 4
921static struct reader readers[] =
922{
923 { /* READER_STREAM */
935 NULL
936 } ,
937 { /* READER_ICY_STREAM */
949 NULL
950 },
951#ifdef NO_FEEDER
952#define feed_init NULL
953#define feed_read NULL
954#define buffered_fullread NULL
955#define feed_seek_frame NULL
956#define feed_back_bytes NULL
957#define feed_skip_bytes NULL
958#define buffered_forget NULL
959#endif
960 { /* READER_FEED */
961 feed_init,
963 feed_read,
973 },
974 { /* READER_BUF_STREAM */
987 } ,
988 { /* READER_BUF_ICY_STREAM */
1001 },
1002#ifdef READ_SYSTEM
1003 ,{
1004 system_init,
1005 NULL, /* filled in by system_init() */
1006 fullread,
1007 NULL,
1008 NULL,
1009 NULL,
1010 NULL,
1011 NULL,
1012 NULL,
1013 NULL,
1014 NULL,
1015 NULL,
1016 }
1017#endif
1018};
1019
1020static struct reader bad_reader =
1021{
1022 bad_init,
1023 bad_close,
1025 bad_head_read,
1027 bad_skip_bytes,
1029 bad_back_bytes,
1031 bad_tell,
1032 bad_rewind,
1033 NULL
1034};
1035
1037{
1038#ifdef TIMEOUT_READ
1039 if(fr->p.timeout > 0)
1040 {
1041 int flags;
1042 if(fr->rdat.r_read != NULL)
1043 {
1044 if(NOQUIET)
1045 error( "Timeout reading does not work with user-provided"
1046 " read function. Implement it yourself!" );
1047 return -1;
1048 }
1049 flags = fcntl(fr->rdat.filept, F_GETFL);
1050 flags |= O_NONBLOCK;
1051 fcntl(fr->rdat.filept, F_SETFL, flags);
1052 fr->rdat.fdread = timeout_read;
1053 fr->rdat.timeout_sec = fr->p.timeout;
1054 fr->rdat.flags |= READER_NONBLOCK;
1055 }
1056 else
1057#endif
1058 fr->rdat.fdread = plain_read;
1059
1060 fr->rdat.read = fr->rdat.r_read != NULL ? fr->rdat.r_read : posix_read;
1061 fr->rdat.lseek = fr->rdat.r_lseek != NULL ? fr->rdat.r_lseek : posix_lseek;
1062#ifndef NO_ICY
1063 /* ICY streams of any sort shall not be seekable. */
1064 if(fr->p.icy_interval > 0) fr->rdat.lseek = nix_lseek;
1065#endif
1066
1067 fr->rdat.filelen = fr->p.flags & MPG123_NO_PEEK_END ? -1 : get_fileinfo(fr);
1068 fr->rdat.filepos = 0;
1069 if(fr->p.flags & MPG123_FORCE_SEEKABLE)
1070 fr->rdat.flags |= READER_SEEKABLE;
1071 /*
1072 Don't enable seeking on ICY streams, just plain normal files.
1073 This check is necessary since the client can enforce ICY parsing on files that would otherwise be seekable.
1074 It is a task for the future to make the ICY parsing safe with seeks ... or not.
1075 */
1076 if(fr->rdat.filelen >= 0)
1077 {
1078 debug("seekable stream");
1079 fr->rdat.flags |= READER_SEEKABLE;
1080 if(!strncmp((char*)fr->id3buf,"TAG",3))
1081 {
1082 fr->rdat.flags |= READER_ID3TAG;
1084 }
1085 }
1086 /* Switch reader to a buffered one, if allowed. */
1087 else if(fr->p.flags & MPG123_SEEKBUFFER)
1088 {
1089#ifdef NO_FEEDER
1090 if(NOQUIET)
1091 error("Buffered readers not supported in this build.");
1093 return -1;
1094#else
1095 if (fr->rd == &readers[READER_STREAM])
1096 {
1097 debug("switching to buffered stream reader");
1099 fr->rdat.fullread = plain_fullread;
1100 }
1101#ifndef NO_ICY
1102 else if(fr->rd == &readers[READER_ICY_STREAM])
1103 {
1104 debug("switching to buffered ICY stream reader");
1106 fr->rdat.fullread = icy_fullread;
1107 }
1108#endif
1109 else
1110 {
1111 if(NOQUIET) error("mpg123 Programmer's fault: invalid reader");
1112 return -1;
1113 }
1114 bc_init(&fr->rdat.buffer);
1115 fr->rdat.filelen = 0; /* We carry the offset, but never know how big the stream is. */
1116 fr->rdat.flags |= READER_BUFFERED;
1117#endif /* NO_ICY */
1118 }
1119 return 0;
1120}
1121
1122
1124{
1125 debug("open_bad");
1126#ifndef NO_ICY
1127 clear_icy(&mh->icy);
1128#endif
1129 mh->rd = &bad_reader;
1130 mh->rdat.flags = 0;
1131#ifndef NO_FEEDER
1132 bc_init(&mh->rdat.buffer);
1133#endif
1134 mh->rdat.filelen = -1;
1135}
1136
1138{
1139 debug("feed reader");
1140#ifdef NO_FEEDER
1141 if(NOQUIET)
1142 error("Buffered readers not supported in this build.");
1144 return -1;
1145#else
1146#ifndef NO_ICY
1147 if(fr->p.icy_interval > 0)
1148 {
1149 if(NOQUIET) error("Feed reader cannot do ICY parsing!");
1150
1151 return -1;
1152 }
1153 clear_icy(&fr->icy);
1154#endif
1155 fr->rd = &readers[READER_FEED];
1156 fr->rdat.flags = 0;
1157 if(fr->rd->init(fr) < 0) return -1;
1158
1159 debug("feed reader init successful");
1160 return 0;
1161#endif /* NO_FEEDER */
1162}
1163
1164/* Final code common to open_stream and open_stream_handle. */
1166{
1167#ifndef NO_ICY
1168 if(fr->p.icy_interval > 0)
1169 {
1170 debug("ICY reader");
1171 fr->icy.interval = fr->p.icy_interval;
1172 fr->icy.next = fr->icy.interval;
1174 }
1175 else
1176#endif
1177 {
1178 fr->rd = &readers[READER_STREAM];
1179 debug("stream reader");
1180 }
1181
1182 if(fr->rd->init(fr) < 0) return -1;
1183
1184 return MPG123_OK;
1185}
1186
1187int open_stream(mpg123_handle *fr, const char *bs_filenam, int fd)
1188{
1189 int filept_opened = 1;
1190 int filept; /* descriptor of opened file/stream */
1191
1192 clear_icy(&fr->icy); /* can be done inside frame_clear ...? */
1193
1194 if(!bs_filenam) /* no file to open, got a descriptor (stdin) */
1195 {
1196 filept = fd;
1197 filept_opened = 0; /* and don't try to close it... */
1198 }
1199 #ifndef O_BINARY
1200 #define O_BINARY (0)
1201 #endif
1202 else if((filept = compat_open(bs_filenam, O_RDONLY|O_BINARY)) < 0) /* a plain old file to open... */
1203 {
1204 if(NOQUIET) error2("Cannot open file %s: %s", bs_filenam, strerror(errno));
1205 fr->err = MPG123_BAD_FILE;
1206 return MPG123_ERR; /* error... */
1207 }
1208
1209 /* now we have something behind filept and can init the reader */
1210 fr->rdat.filelen = -1;
1211 fr->rdat.filept = filept;
1212 fr->rdat.flags = 0;
1213 if(filept_opened) fr->rdat.flags |= READER_FD_OPENED;
1214
1215 return open_finish(fr);
1216}
1217
1218int open_stream_handle(mpg123_handle *fr, void *iohandle)
1219{
1220 clear_icy(&fr->icy); /* can be done inside frame_clear ...? */
1221 fr->rdat.filelen = -1;
1222 fr->rdat.filept = -1;
1223 fr->rdat.iohandle = iohandle;
1224 fr->rdat.flags = 0;
1225 fr->rdat.flags |= READER_HANDLEIO;
1226
1227 return open_finish(fr);
1228}
1229
1230/* Wrappers for actual reading/seeking... I'm full of wrappers here. */
1231static off_t io_seek(struct reader_data *rdat, off_t offset, int whence)
1232{
1233 if(rdat->flags & READER_HANDLEIO)
1234 {
1235 if(rdat->r_lseek_handle != NULL)
1236 {
1237 return rdat->r_lseek_handle(rdat->iohandle, offset, whence);
1238 }
1239 else return -1;
1240 }
1241 else
1242 return rdat->lseek(rdat->filept, offset, whence);
1243}
1244
1245static ssize_t io_read(struct reader_data *rdat, void *buf, size_t count)
1246{
1247 if(rdat->flags & READER_HANDLEIO)
1248 {
1249 if(rdat->r_read_handle != NULL)
1250 {
1251 return rdat->r_read_handle(rdat->iohandle, buf, count);
1252 }
1253 else return -1;
1254 }
1255 else
1256 return rdat->read(rdat->filept, buf, count);
1257}
int strncmp(const char *String1, const char *String2, ACPI_SIZE Count)
Definition: utclib.c:534
#define read
Definition: acwin.h:96
#define O_RDONLY
Definition: acwin.h:108
static unsigned char bytes[4]
Definition: adnsresfilter.c:74
struct outqueuenode * head
Definition: adnsresfilter.c:66
PBATCH_CONTEXT bc
Definition: batch.c:67
r l[0]
Definition: byte_order.h:168
#define SEEK_END
Definition: cabinet.c:29
#define free
Definition: debug_ros.c:5
#define malloc
Definition: debug_ros.c:4
#define NULL
Definition: types.h:112
#define TRUE
Definition: types.h:120
#define FALSE
Definition: types.h:117
INT WSAAPI select(IN INT s, IN OUT LPFD_SET readfds, IN OUT LPFD_SET writefds, IN OUT LPFD_SET exceptfds, IN CONST struct timeval *timeout)
Definition: select.c:41
#define off_t
Definition: dosfsck.h:5
__kernel_off_t off_t
Definition: linux.h:201
GLuint GLuint GLsizei count
Definition: gl.h:1545
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: gl.h:1950
GLsizeiptr size
Definition: glext.h:5919
GLdouble n
Definition: glext.h:7729
GLuint res
Definition: glext.h:9613
GLboolean GLboolean GLboolean b
Definition: glext.h:6204
GLenum GLuint GLenum GLsizei const GLchar * buf
Definition: glext.h:7751
GLuint in
Definition: glext.h:9616
GLint left
Definition: glext.h:7726
GLbitfield flags
Definition: glext.h:7161
GLuint GLuint num
Definition: glext.h:9618
GLenum GLsizei len
Definition: glext.h:6722
GLintptr offset
Definition: glext.h:5920
@ MPG123_LSEEK_FAILED
Definition: mpg123.h:423
@ MPG123_NO_SEEK
Definition: mpg123.h:406
@ MPG123_ERR
Definition: mpg123.h:382
@ MPG123_BAD_FILE
Definition: mpg123.h:405
@ MPG123_MISSING_FEATURE
Definition: mpg123.h:421
@ MPG123_OK
Definition: mpg123.h:383
@ MPG123_SEEKBUFFER
Definition: mpg123.h:222
@ MPG123_NO_PEEK_END
Definition: mpg123.h:231
@ MPG123_FORCE_SEEKABLE
Definition: mpg123.h:237
#define MPG123_NEW_ICY
Definition: mpg123.h:1467
#define MPG123_NEW_ID3
Definition: mpg123.h:1465
#define stderr
Definition: stdio.h:100
_Check_return_opt_ _CRTIMP int __cdecl fprintf(_Inout_ FILE *_File, _In_z_ _Printf_format_string_ const char *_Format,...)
#define open_stream_handle
Definition: intsym.h:252
#define frame_index_find
Definition: intsym.h:187
#define compat_close
Definition: intsym.h:16
#define bc_fill
Definition: intsym.h:250
#define bc_cleanup
Definition: intsym.h:248
#define read_frame
Definition: intsym.h:241
#define open_feed
Definition: intsym.h:253
#define bc_prepare
Definition: intsym.h:247
#define bc_poolsize
Definition: intsym.h:249
#define clear_icy
Definition: intsym.h:209
#define open_bad
Definition: intsym.h:257
#define open_stream
Definition: intsym.h:251
#define feed_set_pos
Definition: intsym.h:256
#define compat_open
Definition: intsym.h:13
#define feed_more
Definition: intsym.h:254
#define SEEK_SET
Definition: jmemansi.c:26
#define b
Definition: ke_i.h:79
#define debug(msg)
Definition: key_call.c:71
#define lseek
Definition: syshdrs.h:47
#define error(str)
Definition: mkdosfs.c:1605
#define memcpy(s1, s2, n)
Definition: mkisofs.h:878
#define SEEK_CUR
Definition: util.h:63
static UINT PSTR DWORD UINT * need
Definition: parser.c:36
#define O_NONBLOCK
Definition: port.h:158
const char * strerror(int err)
Definition: compat_str.c:23
#define NOQUIET
#define VERBOSE3
#define long
Definition: qsort.c:33
static unsigned __int64 next
Definition: rand_nt.c:6
static ssize_t feed_read(mpg123_handle *fr, unsigned char *out, ssize_t count)
Definition: readers.c:788
static int generic_head_read(mpg123_handle *fr, unsigned long *newhead)
Definition: readers.c:303
static struct buffy * bc_alloc(struct bufferchain *bc, size_t size)
Definition: readers.c:535
static void stream_rewind(mpg123_handle *fr)
Definition: readers.c:406
static ssize_t bc_need_more(struct bufferchain *bc)
Definition: readers.c:669
static ssize_t plain_read(mpg123_handle *fr, void *buf, size_t count)
Definition: readers.c:58
static off_t nix_lseek(int fd, off_t offset, int whence)
Definition: readers.c:34
static off_t generic_tell(mpg123_handle *fr)
Definition: readers.c:395
static int feed_init(mpg123_handle *fr)
Definition: readers.c:761
static ssize_t bc_seekback(struct bufferchain *bc, ssize_t count)
Definition: readers.c:727
#define O_BINARY
static int stream_back_bytes(mpg123_handle *fr, off_t bytes)
Definition: readers.c:377
static off_t get_fileinfo(mpg123_handle *)
Definition: readers.c:430
static off_t io_seek(struct reader_data *rdat, off_t offset, int whence)
Definition: readers.c:1231
static ssize_t unsigned long *newhead static bugger_off int off_t len static bugger_off int off_t bytes static bugger_off int bad_seek_frame(mpg123_handle *mh, off_t num) bugger_off static off_t bad_tell(mpg123_handle *mh) bugger_off static void bad_rewind(mpg123_handle *mh)
Definition: readers.c:911
static int feed_seek_frame(mpg123_handle *fr, off_t num)
Definition: readers.c:813
static int bc_append(struct bufferchain *bc, ssize_t size)
Definition: readers.c:620
#define bugger_off
Definition: readers.c:902
static ssize_t buffered_fullread(mpg123_handle *fr, unsigned char *out, ssize_t count)
Definition: readers.c:842
#define READER_BUF_ICY_STREAM
Definition: readers.c:920
#define READER_ICY_STREAM
Definition: readers.c:917
static struct buffy * buffy_new(size_t size, size_t minsize)
Definition: readers.c:470
#define READER_STREAM
Definition: readers.c:916
static int bc_add(struct bufferchain *bc, const unsigned char *data, ssize_t size)
Definition: readers.c:637
static off_t posix_lseek(int fd, off_t offset, int whence)
Definition: readers.c:33
static off_t stream_lseek(mpg123_handle *fr, off_t pos, int whence)
Definition: readers.c:227
static ssize_t icy_fullread(mpg123_handle *fr, unsigned char *buf, ssize_t count)
Definition: readers.c:92
static void bc_free(struct bufferchain *bc, struct buffy *buf)
Definition: readers.c:553
static ssize_t bc_skip(struct bufferchain *bc, ssize_t count)
Definition: readers.c:717
static off_t feed_skip_bytes(mpg123_handle *fr, off_t len)
Definition: readers.c:796
static ssize_t unsigned long *newhead static bugger_off int off_t len static bugger_off int bad_read_frame_body(mpg123_handle *mh, unsigned char *data, int size) bugger_off static int bad_back_bytes(mpg123_handle *mh
static int stream_seek_frame(mpg123_handle *fr, off_t newframe)
Definition: readers.c:257
static ssize_t posix_read(int fd, void *buf, size_t count)
Definition: readers.c:32
static void bc_init(struct bufferchain *bc)
Definition: readers.c:596
static ssize_t unsigned long *newhead static bugger_off int bad_head_shift(mpg123_handle *mh, unsigned long *head) bugger_off static off_t bad_skip_bytes(mpg123_handle *mh
#define READER_FEED
Definition: readers.c:918
static int generic_read_frame_body(mpg123_handle *fr, unsigned char *buf, int size)
Definition: readers.c:388
static struct reader bad_reader
Definition: readers.c:1020
static int bc_fill_pool(struct bufferchain *bc)
Definition: readers.c:567
static void buffy_del_chain(struct buffy *buf)
Definition: readers.c:498
static void buffered_forget(mpg123_handle *fr)
Definition: readers.c:816
static int bad_init(mpg123_handle *mh) bugger_off static void bad_close(mpg123_handle *mh)
Definition: readers.c:903
static struct reader readers[]
Definition: readers.c:921
static ssize_t plain_fullread(mpg123_handle *fr, unsigned char *buf, ssize_t count)
Definition: readers.c:202
static off_t stream_skip_bytes(mpg123_handle *fr, off_t len)
Definition: readers.c:333
static void bc_reset(struct bufferchain *bc)
Definition: readers.c:606
static void buffy_del(struct buffy *buf)
Definition: readers.c:488
static ssize_t bc_give(struct bufferchain *bc, unsigned char *out, ssize_t size)
Definition: readers.c:678
static int open_finish(mpg123_handle *fr)
Definition: readers.c:1165
static int generic_head_shift(mpg123_handle *fr, unsigned long *head)
Definition: readers.c:319
static int feed_back_bytes(mpg123_handle *fr, off_t bytes)
Definition: readers.c:805
static ssize_t io_read(struct reader_data *rdat, void *buf, size_t count)
Definition: readers.c:1245
static void stream_close(mpg123_handle *fr)
Definition: readers.c:240
#define READER_BUF_STREAM
Definition: readers.c:919
static void bc_forget(struct bufferchain *bc)
Definition: readers.c:734
static ssize_t bad_fullread(mpg123_handle *mh, unsigned char *data, ssize_t count) bugger_off static int bad_head_read(mpg123_handle *mh
static int default_init(mpg123_handle *fr)
Definition: readers.c:1036
static FILE * out
Definition: regtests2xml.c:44
int ssize_t
Definition: rosdhcp.h:48
#define errno
Definition: errno.h:18
#define SIZE_P
Definition: compat.h:139
#define OFF_P
Definition: compat.h:131
#define SSIZE_P
Definition: compat.h:147
unsigned long size_p
Definition: compat.h:140
long off_p
Definition: compat.h:132
long ssize_p
Definition: compat.h:148
#define ssize_t
Definition: config.h:517
#define debug1(s, a)
Definition: debug.h:61
#define debug2(s, a, b)
Definition: debug.h:62
#define debug5(s, a, b, c, d, e)
Definition: debug.h:65
#define mdebug(s,...)
Definition: debug.h:58
#define debug4(s, a, b, c, d)
Definition: debug.h:64
#define debug3(s, a, b, c)
Definition: debug.h:63
#define error2(s, a, b)
Definition: debug.h:126
#define error1(s, a)
Definition: debug.h:125
#define READER_BUFFERED
Definition: reader.h:116
#define READER_HANDLEIO
Definition: reader.h:118
#define READER_ERROR
Definition: reader.h:134
#define READER_MORE
Definition: reader.h:135
#define READER_FD_OPENED
Definition: reader.h:113
#define READER_ID3TAG
Definition: reader.h:114
#define READER_SEEKABLE
Definition: reader.h:115
#define READER_NONBLOCK
Definition: reader.h:117
static int fd
Definition: io.c:51
Definition: reader.h:17
struct buffy * next
Definition: reader.h:21
ssize_t realsize
Definition: reader.h:20
unsigned char * data
Definition: reader.h:18
ssize_t size
Definition: reader.h:19
uint16_t size
Definition: btrfs_drv.h:563
Definition: winsock.h:66
struct mpg123_pars_struct p
Definition: frame.h:289
struct icy_meta icy
Definition: frame.h:303
struct reader * rd
Definition: frame.h:287
unsigned char id3buf[128]
Definition: frame.h:296
struct reader_data rdat
Definition: frame.h:288
ssize_t(* r_read_handle)(void *handle, void *buf, size_t count)
Definition: reader.h:68
ssize_t(* read)(int fd, void *buf, size_t count)
Definition: reader.h:73
int flags
Definition: reader.h:60
int filept
Definition: reader.h:57
off_t(* lseek)(int fd, off_t offset, int whence)
Definition: reader.h:74
void * iohandle
Definition: reader.h:59
off_t(* r_lseek_handle)(void *handle, off_t offset, int whence)
Definition: reader.h:69
Definition: reader.h:84
ssize_t(* fullread)(mpg123_handle *, unsigned char *, ssize_t)
Definition: reader.h:87
int ret
#define FD_ZERO(set)
Definition: winsock.h:96
#define FD_SET(fd, set)
Definition: winsock.h:89