ReactOS  0.4.15-dev-1070-ge1a01de
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 
30 static int default_init(mpg123_handle *fr);
32 static ssize_t posix_read(int fd, void *buf, size_t count){ return read(fd, buf, count); }
33 static off_t posix_lseek(int fd, off_t offset, int whence){ return lseek(fd, offset, whence); }
34 static off_t nix_lseek(int fd, off_t offset, int whence){ return -1; }
35 
36 static 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. */
39 static off_t io_seek(struct reader_data *rdat, off_t offset, int whence);
40 static ssize_t io_read(struct reader_data *rdat, void *buf, size_t count);
41 
42 #ifndef NO_FEEDER
43 /* Bufferchain methods. */
44 static void bc_init(struct bufferchain *bc);
45 static void bc_reset(struct bufferchain *bc);
46 static int bc_append(struct bufferchain *bc, ssize_t size);
47 #if 0
48 static void bc_drop(struct bufferchain *bc);
49 #endif
50 static int bc_add(struct bufferchain *bc, const unsigned char *data, ssize_t size);
51 static ssize_t bc_give(struct bufferchain *bc, unsigned char *out, ssize_t size);
52 static ssize_t bc_skip(struct bufferchain *bc, ssize_t count);
54 static void bc_forget(struct bufferchain *bc);
55 #endif
56 
57 /* A normal read and a read with timeout. */
58 static 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. */
69 static 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*/
92 static 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;
173  fr->metaflags |= MPG123_NEW_ICY;
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 
227 static 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  {
234  fr->err = MPG123_LSEEK_FAILED;
235  ret = READER_ERROR; /* not the original value */
236  }
237  return ret;
238 }
239 
240 static void stream_close(mpg123_handle *fr)
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 
257 static 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 */
303 static 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 */
319 static 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 */
388 static 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! */
406 static void stream_rewind(mpg123_handle *fr)
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 
470 static 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 
488 static 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. */
498 static 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 
508 void 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 
516 size_t bc_fill(struct bufferchain *bc)
517 {
518  return (size_t)(bc->size - bc->pos);
519 }
520 
521 void 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 
527 void bc_cleanup(struct bufferchain *bc)
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. */
535 static 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. */
553 static 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. */
567 static 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 
596 static 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 
606 static 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. */
620 static 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. */
637 static 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. */
678 static 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. */
734 static 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 
761 static int feed_init(mpg123_handle *fr)
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 */
772 int 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  {
778  ret = READER_ERROR;
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 
788 static 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
886 int 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; }
904 static void bad_close(mpg123_handle *mh){}
905 static ssize_t bad_fullread(mpg123_handle *mh, unsigned char *data, ssize_t count) bugger_off
906 static int bad_head_read(mpg123_handle *mh, unsigned long *newhead) bugger_off
907 static int bad_head_shift(mpg123_handle *mh, unsigned long *head) bugger_off
908 static off_t bad_skip_bytes(mpg123_handle *mh, off_t len) bugger_off
909 static int bad_read_frame_body(mpg123_handle *mh, unsigned char *data, int size) bugger_off
910 static int bad_back_bytes(mpg123_handle *mh, off_t bytes) bugger_off
912 static off_t bad_tell(mpg123_handle *mh) bugger_off
913 static 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
921 static struct reader readers[] =
922 {
923  { /* READER_STREAM */
924  default_init,
925  stream_close,
933  generic_tell,
935  NULL
936  } ,
937  { /* READER_ICY_STREAM */
938  default_init,
939  stream_close,
940  icy_fullread,
947  generic_tell,
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,
962  stream_close,
963  feed_read,
970  generic_tell,
973  },
974  { /* READER_BUF_STREAM */
975  default_init,
976  stream_close,
984  generic_tell,
987  } ,
988  { /* READER_BUF_ICY_STREAM */
989  default_init,
990  stream_close,
998  generic_tell,
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 
1020 static struct reader bad_reader =
1021 {
1022  bad_init,
1023  bad_close,
1024  bad_fullread,
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;
1083  fr->metaflags |= MPG123_NEW_ID3;
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");
1098  fr->rd = &readers[READER_BUF_STREAM];
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;
1173  fr->rd = &readers[READER_ICY_STREAM];
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 
1187 int 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 
1218 int 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. */
1231 static 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 
1245 static 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 }
Definition: winsock.h:66
static ssize_t bad_fullread(mpg123_handle *mh, unsigned char *data, ssize_t count) bugger_off static int bad_head_read(mpg123_handle *mh
int filept
Definition: reader.h:57
#define SEEK_CUR
Definition: util.h:63
static off_t generic_tell(mpg123_handle *fr)
Definition: readers.c:395
static int open_finish(mpg123_handle *fr)
Definition: readers.c:1165
#define READER_SEEKABLE
Definition: reader.h:115
uint16_t size
Definition: btrfs_drv.h:572
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
#define READER_BUF_ICY_STREAM
Definition: readers.c:920
static int feed_back_bytes(mpg123_handle *fr, off_t bytes)
Definition: readers.c:805
static off_t nix_lseek(int fd, off_t offset, int whence)
Definition: readers.c:34
struct mpg123_pars_struct p
Definition: frame.h:289
#define compat_open
Definition: intsym.h:13
void bc_poolsize(struct bufferchain *bc, size_t pool_size, size_t bufblock)
Definition: readers.c:521
#define error(str)
Definition: mkdosfs.c:1605
static ssize_t bc_skip(struct bufferchain *bc, ssize_t count)
Definition: readers.c:717
static ssize_t icy_fullread(mpg123_handle *fr, unsigned char *buf, ssize_t count)
Definition: readers.c:92
static off_t stream_skip_bytes(mpg123_handle *fr, off_t len)
Definition: readers.c:333
#define O_BINARY
struct outqueuenode * head
Definition: adnsresfilter.c:66
GLenum GLuint GLenum GLsizei const GLchar * buf
Definition: glext.h:7751
#define TRUE
Definition: types.h:120
#define error1(s, a)
Definition: debug.h:125
static int stream_seek_frame(mpg123_handle *fr, off_t newframe)
Definition: readers.c:257
static void bc_free(struct bufferchain *bc, struct buffy *buf)
Definition: readers.c:553
void open_bad(mpg123_handle *mh)
Definition: readers.c:1123
GLuint GLuint GLsizei count
Definition: gl.h:1545
unsigned char * data
Definition: reader.h:18
#define O_NONBLOCK
Definition: port.h:158
#define free
Definition: debug_ros.c:5
#define READER_FEED
Definition: readers.c:918
__kernel_off_t off_t
Definition: linux.h:201
static ssize_t bc_seekback(struct bufferchain *bc, ssize_t count)
Definition: readers.c:727
static void bc_forget(struct bufferchain *bc)
Definition: readers.c:734
static struct buffy * buffy_new(size_t size, size_t minsize)
Definition: readers.c:470
GLintptr offset
Definition: glext.h:5920
GLdouble n
Definition: glext.h:7729
static ssize_t buffered_fullread(mpg123_handle *fr, unsigned char *out, ssize_t count)
Definition: readers.c:842
#define debug4(s, a, b, c, d)
Definition: debug.h:64
#define frame_index_find
Definition: intsym.h:187
#define READER_FD_OPENED
Definition: reader.h:113
#define READER_NONBLOCK
Definition: reader.h:117
static int fd
Definition: io.c:51
_Check_return_opt_ _CRTIMP long __cdecl lseek(_In_ int _FileHandle, _In_ long _Offset, _In_ int _Origin)
#define ssize_t
Definition: config.h:517
int errno
static off_t feed_skip_bytes(mpg123_handle *fr, off_t len)
Definition: readers.c:796
static int generic_head_read(mpg123_handle *fr, unsigned long *newhead)
Definition: readers.c:303
#define FD_ZERO(set)
Definition: winsock.h:96
#define debug2(s, a, b)
Definition: debug.h:62
#define FD_SET(fd, set)
Definition: winsock.h:89
const char * strerror(int err)
Definition: compat_str.c:23
struct reader_data rdat
Definition: frame.h:288
#define debug3(s, a, b, c)
Definition: debug.h:63
static void buffered_forget(mpg123_handle *fr)
Definition: readers.c:816
ssize_t realsize
Definition: reader.h:20
static off_t posix_lseek(int fd, off_t offset, int whence)
Definition: readers.c:33
static ssize_t plain_fullread(mpg123_handle *fr, unsigned char *buf, ssize_t count)
Definition: readers.c:202
static int bad_init(mpg123_handle *mh) bugger_off static void bad_close(mpg123_handle *mh)
Definition: readers.c:903
int feed_more(mpg123_handle *fr, const unsigned char *in, long count)
Definition: readers.c:772
static int bc_fill_pool(struct bufferchain *bc)
Definition: readers.c:567
#define MPG123_NEW_ICY
Definition: mpg123.h:1467
static unsigned char bytes[4]
Definition: adnsresfilter.c:74
#define FALSE
Definition: types.h:117
#define MPG123_NEW_ID3
Definition: mpg123.h:1465
_Check_return_opt_ _CRTIMP int __cdecl fprintf(_Inout_ FILE *_File, _In_z_ _Printf_format_string_ const char *_Format,...)
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
static void buffy_del(struct buffy *buf)
Definition: readers.c:488
static int bc_append(struct bufferchain *bc, ssize_t size)
Definition: readers.c:620
void * iohandle
Definition: reader.h:59
struct icy_meta icy
Definition: frame.h:303
static void bc_reset(struct bufferchain *bc)
Definition: readers.c:606
smooth NULL
Definition: ftsmooth.c:416
ssize_t(* fullread)(mpg123_handle *, unsigned char *, ssize_t)
Definition: reader.h:87
#define READER_ERROR
Definition: reader.h:134
static off_t io_seek(struct reader_data *rdat, off_t offset, int whence)
Definition: readers.c:1231
#define off_t
Definition: dosfsck.h:5
#define VERBOSE3
#define b
Definition: ke_i.h:79
#define error2(s, a, b)
Definition: debug.h:126
static ssize_t posix_read(int fd, void *buf, size_t count)
Definition: readers.c:32
r l[0]
Definition: byte_order.h:167
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_MORE
Definition: reader.h:135
#define SEEK_SET
Definition: jmemansi.c:26
#define READER_ID3TAG
Definition: reader.h:114
GLboolean GLboolean GLboolean b
Definition: glext.h:6204
unsigned long size_p
Definition: compat.h:140
GLsizeiptr size
Definition: glext.h:5919
#define bugger_off
Definition: readers.c:902
#define compat_close
Definition: intsym.h:16
static struct reader readers[]
Definition: readers.c:921
int strncmp(const char *String1, const char *String2, ACPI_SIZE Count)
Definition: utclib.c:534
static int feed_init(mpg123_handle *fr)
Definition: readers.c:761
static FILE * out
Definition: regtests2xml.c:44
off_t feed_set_pos(mpg123_handle *fr, off_t pos)
Definition: readers.c:822
GLuint GLuint num
Definition: glext.h:9618
GLint left
Definition: glext.h:7726
static int feed_seek_frame(mpg123_handle *fr, off_t num)
Definition: readers.c:813
ssize_t size
Definition: reader.h:19
int flags
Definition: reader.h:60
static ssize_t feed_read(mpg123_handle *fr, unsigned char *out, ssize_t count)
Definition: readers.c:788
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: gl.h:1950
GLbitfield flags
Definition: glext.h:7161
static off_t stream_lseek(mpg123_handle *fr, off_t pos, int whence)
Definition: readers.c:227
#define NOQUIET
static int stream_back_bytes(mpg123_handle *fr, off_t bytes)
Definition: readers.c:377
#define SSIZE_P
Definition: compat.h:147
#define READER_HANDLEIO
Definition: reader.h:118
int ret
#define mdebug(s,...)
Definition: debug.h:58
static void bc_init(struct bufferchain *bc)
Definition: readers.c:596
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 struct reader bad_reader
Definition: readers.c:1020
off_t(* r_lseek_handle)(void *handle, off_t offset, int whence)
Definition: reader.h:69
#define READER_STREAM
Definition: readers.c:916
size_t bc_fill(struct bufferchain *bc)
Definition: readers.c:516
static void stream_rewind(mpg123_handle *fr)
Definition: readers.c:406
#define memcpy(s1, s2, n)
Definition: mkisofs.h:878
GLenum GLsizei len
Definition: glext.h:6722
int ssize_t
Definition: rosdhcp.h:48
#define READER_BUFFERED
Definition: reader.h:116
off_t(* lseek)(int fd, off_t offset, int whence)
Definition: reader.h:74
static int generic_read_frame_body(mpg123_handle *fr, unsigned char *buf, int size)
Definition: readers.c:388
static ssize_t bc_give(struct bufferchain *bc, unsigned char *out, ssize_t size)
Definition: readers.c:678
ssize_t(* read)(int fd, void *buf, size_t count)
Definition: reader.h:73
struct buffy * next
Definition: reader.h:21
int open_stream(mpg123_handle *fr, const char *bs_filenam, int fd)
Definition: readers.c:1187
static unsigned __int64 next
Definition: rand_nt.c:6
GLuint in
Definition: glext.h:9616
#define read_frame
Definition: intsym.h:241
#define READER_ICY_STREAM
Definition: readers.c:917
#define clear_icy
Definition: intsym.h:209
unsigned char id3buf[128]
Definition: frame.h:296
static ssize_t io_read(struct reader_data *rdat, void *buf, size_t count)
Definition: readers.c:1245
static void buffy_del_chain(struct buffy *buf)
Definition: readers.c:498
void bc_cleanup(struct bufferchain *bc)
Definition: readers.c:527
#define long
Definition: qsort.c:33
#define SIZE_P
Definition: compat.h:139
Definition: reader.h:16
static int bc_add(struct bufferchain *bc, const unsigned char *data, ssize_t size)
Definition: readers.c:637
Definition: reader.h:83
static ssize_t plain_read(mpg123_handle *fr, void *buf, size_t count)
Definition: readers.c:58
void bc_prepare(struct bufferchain *bc, size_t pool_size, size_t bufblock)
Definition: readers.c:508
long off_p
Definition: compat.h:132
#define READER_BUF_STREAM
Definition: readers.c:919
GLuint res
Definition: glext.h:9613
static ssize_t bc_need_more(struct bufferchain *bc)
Definition: readers.c:669
FILE * stderr
int open_feed(mpg123_handle *fr)
Definition: readers.c:1137
#define SEEK_END
Definition: cabinet.c:27
PBATCH_CONTEXT bc
Definition: batch.c:67
#define debug(msg)
Definition: key_call.c:71
#define malloc
Definition: debug_ros.c:4
struct reader * rd
Definition: frame.h:287
ssize_t(* r_read_handle)(void *handle, void *buf, size_t count)
Definition: reader.h:68
#define debug5(s, a, b, c, d, e)
Definition: debug.h:65
static void stream_close(mpg123_handle *fr)
Definition: readers.c:240
static int generic_head_shift(mpg123_handle *fr, unsigned long *head)
Definition: readers.c:319
static off_t get_fileinfo(mpg123_handle *)
Definition: readers.c:430
static int default_init(mpg123_handle *fr)
Definition: readers.c:1036
long ssize_p
Definition: compat.h:148
#define debug1(s, a)
Definition: debug.h:61
static struct buffy * bc_alloc(struct bufferchain *bc, size_t size)
Definition: readers.c:535
int open_stream_handle(mpg123_handle *fr, void *iohandle)
Definition: readers.c:1218
static UINT PSTR DWORD UINT * need
Definition: parser.c:36
#define OFF_P
Definition: compat.h:131
_CRTIMP int __cdecl read(_In_ int _FileHandle, _Out_writes_bytes_(_MaxCharCount) void *_DstBuf, _In_ unsigned int _MaxCharCount)
#define O_RDONLY
Definition: acwin.h:108