Minor fixes to playback logic
[asterisk/asterisk.git] / file.c
1 /*
2  * Asterisk -- A telephony toolkit for Linux.
3  *
4  * Generic File Format Support.
5  * 
6  * Copyright (C) 1999, Mark Spencer
7  *
8  * Mark Spencer <markster@linux-support.net>
9  *
10  * This program is free software, distributed under the terms of
11  * the GNU General Public License
12  */
13
14 #include <sys/types.h>
15 #include <asterisk/frame.h>
16 #include <asterisk/file.h>
17 #include <asterisk/logger.h>
18 #include <asterisk/channel.h>
19 #include <asterisk/sched.h>
20 #include <asterisk/options.h>
21 #include <asterisk/translate.h>
22 #include <errno.h>
23 #include <unistd.h>
24 #include <stdlib.h>
25 #include <string.h>
26 #include <pthread.h>
27 #include <stdio.h>
28 #include <fcntl.h>
29 #include <dirent.h>
30 #include <sys/stat.h>
31 #include "asterisk.h"
32 #include "astconf.h"
33
34 struct ast_format {
35         /* Name of format */
36         char name[80];
37         /* Extensions (separated by | if more than one) 
38            this format can read.  First is assumed for writing (e.g. .mp3) */
39         char exts[80];
40         /* Format of frames it uses/provides (one only) */
41         int format;
42         /* Open an input stream, and start playback */
43         struct ast_filestream * (*open)(int fd);
44         /* Open an output stream, of a given file descriptor and comment it appropriately if applicable */
45         struct ast_filestream * (*rewrite)(int fd, char *comment);
46         /* Write a frame to a channel */
47         int (*write)(struct ast_filestream *, struct ast_frame *);
48         /* seek num samples into file, whence(think normal seek) */
49         int (*seek)(struct ast_filestream *, long offset, int whence);
50         /* trunc file to current position */
51         int (*trunc)(struct ast_filestream *fs);
52         /* tell current position */
53         long (*tell)(struct ast_filestream *fs);
54         /* Read the next frame from the filestream (if available) and report when to get next one
55                 (in samples) */
56         struct ast_frame * (*read)(struct ast_filestream *, int *whennext);
57         /* Close file, and destroy filestream structure */
58         void (*close)(struct ast_filestream *);
59         /* Retrieve file comment */
60         char * (*getcomment)(struct ast_filestream *);
61         /* Link */
62         struct ast_format *next;
63 };
64
65 struct ast_filestream {
66         /* Everybody reserves a block of AST_RESERVED_POINTERS pointers for us */
67         struct ast_format *fmt;
68         int flags;
69         mode_t mode;
70         char *filename;
71         /* Video file stream */
72         struct ast_filestream *vfs;
73         /* Transparently translate from another format -- just once */
74         struct ast_trans_pvt *trans;
75         struct ast_tranlator_pvt *tr;
76         int lastwriteformat;
77         int lasttimeout;
78         struct ast_channel *owner;
79 };
80
81 static pthread_mutex_t formatlock = AST_MUTEX_INITIALIZER;
82
83 static struct ast_format *formats = NULL;
84
85 int ast_format_register(char *name, char *exts, int format,
86                                                 struct ast_filestream * (*open)(int fd),
87                                                 struct ast_filestream * (*rewrite)(int fd, char *comment),
88                                                 int (*write)(struct ast_filestream *, struct ast_frame *),
89                                                 int (*seek)(struct ast_filestream *, long sample_offset, int whence),
90                                                 int (*trunc)(struct ast_filestream *),
91                                                 long (*tell)(struct ast_filestream *),
92                                                 struct ast_frame * (*read)(struct ast_filestream *, int *whennext),
93                                                 void (*close)(struct ast_filestream *),
94                                                 char * (*getcomment)(struct ast_filestream *))
95 {
96         struct ast_format *tmp;
97         if (ast_pthread_mutex_lock(&formatlock)) {
98                 ast_log(LOG_WARNING, "Unable to lock format list\n");
99                 return -1;
100         }
101         tmp = formats;
102         while(tmp) {
103                 if (!strcasecmp(name, tmp->name)) {
104                         ast_pthread_mutex_unlock(&formatlock);
105                         ast_log(LOG_WARNING, "Tried to register '%s' format, already registered\n", name);
106                         return -1;
107                 }
108                 tmp = tmp->next;
109         }
110         tmp = malloc(sizeof(struct ast_format));
111         if (!tmp) {
112                 ast_log(LOG_WARNING, "Out of memory\n");
113                 ast_pthread_mutex_unlock(&formatlock);
114                 return -1;
115         }
116         strncpy(tmp->name, name, sizeof(tmp->name)-1);
117         strncpy(tmp->exts, exts, sizeof(tmp->exts)-1);
118         tmp->open = open;
119         tmp->rewrite = rewrite;
120         tmp->read = read;
121         tmp->write = write;
122         tmp->seek = seek;
123         tmp->trunc = trunc;
124         tmp->tell = tell;
125         tmp->close = close;
126         tmp->format = format;
127         tmp->getcomment = getcomment;
128         tmp->next = formats;
129         formats = tmp;
130         ast_pthread_mutex_unlock(&formatlock);
131         if (option_verbose > 1)
132                 ast_verbose( VERBOSE_PREFIX_2 "Registered file format %s, extension(s) %s\n", name, exts);
133         return 0;
134 }
135
136 int ast_format_unregister(char *name)
137 {
138         struct ast_format *tmp, *tmpl = NULL;
139         if (ast_pthread_mutex_lock(&formatlock)) {
140                 ast_log(LOG_WARNING, "Unable to lock format list\n");
141                 return -1;
142         }
143         tmp = formats;
144         while(tmp) {
145                 if (!strcasecmp(name, tmp->name)) {
146                         if (tmpl) 
147                                 tmpl->next = tmp->next;
148                         else
149                                 formats = tmp->next;
150                         free(tmp);
151                         ast_pthread_mutex_unlock(&formatlock);
152                         if (option_verbose > 1)
153                                 ast_verbose( VERBOSE_PREFIX_2 "Unregistered format %s\n", name);
154                         return 0;
155                 }
156                 tmp = tmp->next;
157         }
158         ast_log(LOG_WARNING, "Tried to unregister format %s, already unregistered\n", name);
159         return -1;
160 }
161
162 int ast_stopstream(struct ast_channel *tmp)
163 {
164         /* Stop a running stream if there is one */
165         if (tmp->vstream)
166                 ast_closestream(tmp->vstream);
167         if (tmp->stream) {
168                 ast_closestream(tmp->stream);
169                 if (tmp->oldwriteformat && ast_set_write_format(tmp, tmp->oldwriteformat))
170                         ast_log(LOG_WARNING, "Unable to restore format back to %d\n", tmp->oldwriteformat);
171         }
172         return 0;
173 }
174
175 int ast_writestream(struct ast_filestream *fs, struct ast_frame *f)
176 {
177         struct ast_frame *trf;
178         int res = -1;
179         int alt=0;
180         if (f->frametype == AST_FRAME_VIDEO) {
181                 if (fs->fmt->format < AST_FORMAT_MAX_AUDIO) {
182                         /* This is the audio portion.  Call the video one... */
183                         if (!fs->vfs && fs->filename) {
184                                 /* XXX Support other video formats XXX */
185                                 char *type = "h263";
186                                 fs->vfs = ast_writefile(fs->filename, type, NULL, fs->flags, 0, fs->mode);
187                                 ast_log(LOG_DEBUG, "Opened video output file\n");
188                         }
189                         if (fs->vfs)
190                                 return ast_writestream(fs->vfs, f);
191                         /* Ignore */
192                         return 0;                               
193                 } else {
194                         /* Might / might not have mark set */
195                         alt = 1;
196                 }
197         } else if (f->frametype != AST_FRAME_VOICE) {
198                 ast_log(LOG_WARNING, "Tried to write non-voice frame\n");
199                 return -1;
200         }
201         if (((fs->fmt->format | alt) & f->subclass) == f->subclass) {
202                 res =  fs->fmt->write(fs, f);
203                 if (res < 0) 
204                         ast_log(LOG_WARNING, "Natural write failed\n");
205                 if (res > 0)
206                         ast_log(LOG_WARNING, "Huh??\n");
207                 return res;
208         } else {
209                 /* XXX If they try to send us a type of frame that isn't the normal frame, and isn't
210                        the one we've setup a translator for, we do the "wrong thing" XXX */
211                 if (fs->trans && (f->subclass != fs->lastwriteformat)) {
212                         ast_translator_free_path(fs->trans);
213                         fs->trans = NULL;
214                 }
215                 if (!fs->trans) 
216                         fs->trans = ast_translator_build_path(fs->fmt->format, f->subclass);
217                 if (!fs->trans)
218                         ast_log(LOG_WARNING, "Unable to translate to format %s, source format %d\n", fs->fmt->name, f->subclass);
219                 else {
220                         fs->lastwriteformat = f->subclass;
221                         res = 0;
222                         /* Get the translated frame but don't consume the original in case they're using it on another stream */
223                         trf = ast_translate(fs->trans, f, 0);
224                         if (trf) {
225                                 res = fs->fmt->write(fs, trf);
226                                 if (res) 
227                                         ast_log(LOG_WARNING, "Translated frame write failed\n");
228                         } else
229                                 res = 0;
230                 }
231                 return res;
232         }
233 }
234
235 static int copy(char *infile, char *outfile)
236 {
237         int ifd;
238         int ofd;
239         int res;
240         int len;
241         char buf[4096];
242         if ((ifd = open(infile, O_RDONLY)) < 0) {
243                 ast_log(LOG_WARNING, "Unable to open %s in read-only mode\n", infile);
244                 return -1;
245         }
246         if ((ofd = open(outfile, O_WRONLY | O_TRUNC | O_CREAT, 0600)) < 0) {
247                 ast_log(LOG_WARNING, "Unable to open %s in write-only mode\n", outfile);
248                 close(ifd);
249                 return -1;
250         }
251         do {
252                 len = read(ifd, buf, sizeof(buf));
253                 if (len < 0) {
254                         ast_log(LOG_WARNING, "Read failed on %s: %s\n", infile, strerror(errno));
255                         close(ifd);
256                         close(ofd);
257                         unlink(outfile);
258                 }
259                 if (len) {
260                         res = write(ofd, buf, len);
261                         if (res != len) {
262                                 ast_log(LOG_WARNING, "Write failed on %s (%d of %d): %s\n", outfile, res, len, strerror(errno));
263                                 close(ifd);
264                                 close(ofd);
265                                 unlink(outfile);
266                         }
267                 }
268         } while(len);
269         close(ifd);
270         close(ofd);
271         return 0;
272 }
273
274 static char *build_filename(char *filename, char *ext)
275 {
276         char *fn;
277         char tmp[AST_CONFIG_MAX_PATH];
278         snprintf(tmp,sizeof(tmp)-1,"%s/%s",(char *)ast_config_AST_VAR_DIR,"sounds");
279         fn = malloc(strlen(tmp) + strlen(filename) + strlen(ext) + 10);
280         if (fn) {
281                 if (filename[0] == '/') 
282                         sprintf(fn, "%s.%s", filename, ext);
283                 else
284                         sprintf(fn, "%s/%s.%s", (char *)tmp, filename, ext);
285         }
286         return fn;
287         
288 }
289
290 #define ACTION_EXISTS 1
291 #define ACTION_DELETE 2
292 #define ACTION_RENAME 3
293 #define ACTION_OPEN   4
294 #define ACTION_COPY   5
295
296 static int ast_filehelper(char *filename, char *filename2, char *fmt, int action)
297 {
298         struct stat st;
299         struct ast_format *f;
300         struct ast_filestream *s;
301         int res=0, ret = 0;
302         char *ext=NULL, *exts, *fn, *nfn;
303         struct ast_channel *chan = (struct ast_channel *)filename2;
304         
305         /* Start with negative response */
306         if (action == ACTION_EXISTS)
307                 res = 0;
308         else
309                 res = -1;
310         if (action == ACTION_OPEN)
311                 ret = -1;
312         /* Check for a specific format */
313         if (ast_pthread_mutex_lock(&formatlock)) {
314                 ast_log(LOG_WARNING, "Unable to lock format list\n");
315                 if (action == ACTION_EXISTS)
316                         return 0;
317                 else
318                         return -1;
319         }
320         f = formats;
321         while(f) {
322                 if (!fmt || !strcasecmp(f->name, fmt)) {
323                         char *stringp=NULL;
324                         exts = strdup(f->exts);
325                         /* Try each kind of extension */
326                         stringp=exts;
327                         ext = strsep(&stringp, "|");
328                         do {
329                                 fn = build_filename(filename, ext);
330                                 if (fn) {
331                                         res = stat(fn, &st);
332                                         if (!res) {
333                                                 switch(action) {
334                                                 case ACTION_EXISTS:
335                                                         ret |= f->format;
336                                                         break;
337                                                 case ACTION_DELETE:
338                                                         res = unlink(fn);
339                                                         if (res)
340                                                                 ast_log(LOG_WARNING, "unlink(%s) failed: %s\n", fn, strerror(errno));
341                                                         break;
342                                                 case ACTION_RENAME:
343                                                         nfn = build_filename(filename2, ext);
344                                                         if (nfn) {
345                                                                 res = rename(fn, nfn);
346                                                                 if (res)
347                                                                         ast_log(LOG_WARNING, "rename(%s,%s) failed: %s\n", fn, nfn, strerror(errno));
348                                                                 free(nfn);
349                                                         } else
350                                                                 ast_log(LOG_WARNING, "Out of memory\n");
351                                                         break;
352                                                 case ACTION_COPY:
353                                                         nfn = build_filename(filename2, ext);
354                                                         if (nfn) {
355                                                                 res = copy(fn, nfn);
356                                                                 if (res)
357                                                                         ast_log(LOG_WARNING, "copy(%s,%s) failed: %s\n", fn, nfn, strerror(errno));
358                                                                 free(nfn);
359                                                         } else
360                                                                 ast_log(LOG_WARNING, "Out of memory\n");
361                                                         break;
362                                                 case ACTION_OPEN:
363                                                         if ((ret < 0) && ((chan->writeformat & f->format) ||
364                                                                                 ((f->format >= AST_FORMAT_MAX_AUDIO) && fmt))) {
365                                                                 ret = open(fn, O_RDONLY);
366                                                                 if (ret >= 0) {
367                                                                         s = f->open(ret);
368                                                                         if (s) {
369                                                                                 s->lasttimeout = -1;
370                                                                                 s->fmt = f;
371                                                                                 s->trans = NULL;
372                                                                                 s->filename = NULL;
373                                                                                 if (s->fmt->format < AST_FORMAT_MAX_AUDIO)
374                                                                                         chan->stream = s;
375                                                                                 else
376                                                                                         chan->vstream = s;
377                                                                         } else {
378                                                                                 close(ret);
379                                                                                 ast_log(LOG_WARNING, "Unable to open fd on %s\n", filename);
380                                                                         }
381                                                                 } else
382                                                                         ast_log(LOG_WARNING, "Couldn't open file %s\n", fn);
383                                                         }
384                                                         break;
385                                                 default:
386                                                         ast_log(LOG_WARNING, "Unknown helper %d\n", action);
387                                                 }
388                                                 /* Conveniently this logic is the same for all */
389                                                 if (res)
390                                                         break;
391                                         }
392                                         free(fn);
393                                 }
394                                 ext = strsep(&stringp, "|");
395                         } while(ext);
396                         free(exts);
397                 }
398                 f = f->next;
399         }
400         ast_pthread_mutex_unlock(&formatlock);
401         if ((action == ACTION_EXISTS) || (action == ACTION_OPEN))
402                 res = ret ? ret : -1;
403         return res;
404 }
405
406 struct ast_filestream *ast_openstream(struct ast_channel *chan, char *filename, char *preflang)
407 {
408         /* This is a fairly complex routine.  Essentially we should do 
409            the following:
410            
411            1) Find which file handlers produce our type of format.
412            2) Look for a filename which it can handle.
413            3) If we find one, then great.  
414            4) If not, see what files are there
415            5) See what we can actually support
416            6) Choose the one with the least costly translator path and
417                set it up.
418                    
419         */
420         int fd = -1;
421         int fmts = -1;
422         char filename2[256];
423         char lang2[MAX_LANGUAGE];
424         int res;
425         ast_stopstream(chan);
426         /* do this first, otherwise we detect the wrong writeformat */
427         if (chan->generator)
428                 ast_deactivate_generator(chan);
429         if (preflang && strlen(preflang)) {
430                 snprintf(filename2, sizeof(filename2), "%s/%s", preflang, filename);
431                 fmts = ast_fileexists(filename2, NULL, NULL);
432                 if (fmts < 1) {
433                         strncpy(lang2, preflang, sizeof(lang2)-1);
434                         snprintf(filename2, sizeof(filename2), "%s/%s", lang2, filename);
435                         fmts = ast_fileexists(filename2, NULL, NULL);
436                 }
437         }
438         if (fmts < 1) {
439                 strncpy(filename2, filename, sizeof(filename2)-1);
440                 fmts = ast_fileexists(filename2, NULL, NULL);
441         }
442         if (fmts < 1) {
443                 ast_log(LOG_WARNING, "File %s does not exist in any format\n", filename);
444                 return NULL;
445         }
446         chan->oldwriteformat = chan->writeformat;
447         /* Set the channel to a format we can work with */
448         res = ast_set_write_format(chan, fmts);
449         
450         fd = ast_filehelper(filename2, (char *)chan, NULL, ACTION_OPEN);
451         if(fd >= 0)
452                 return chan->stream;
453         return NULL;
454 }
455
456 struct ast_filestream *ast_openvstream(struct ast_channel *chan, char *filename, char *preflang)
457 {
458         /* This is a fairly complex routine.  Essentially we should do 
459            the following:
460            
461            1) Find which file handlers produce our type of format.
462            2) Look for a filename which it can handle.
463            3) If we find one, then great.  
464            4) If not, see what files are there
465            5) See what we can actually support
466            6) Choose the one with the least costly translator path and
467                set it up.
468                    
469         */
470         int fd = -1;
471         int fmts = -1;
472         char filename2[256];
473         char lang2[MAX_LANGUAGE];
474         /* XXX H.263 only XXX */
475         char *fmt = "h263";
476         if (preflang && strlen(preflang)) {
477                 snprintf(filename2, sizeof(filename2), "%s/%s", preflang, filename);
478                 fmts = ast_fileexists(filename2, fmt, NULL);
479                 if (fmts < 1) {
480                         strncpy(lang2, preflang, sizeof(lang2)-1);
481                         snprintf(filename2, sizeof(filename2), "%s/%s", lang2, filename);
482                         fmts = ast_fileexists(filename2, fmt, NULL);
483                 }
484         }
485         if (fmts < 1) {
486                 strncpy(filename2, filename, sizeof(filename2)-1);
487                 fmts = ast_fileexists(filename2, fmt, NULL);
488         }
489         if (fmts < 1) {
490                 return NULL;
491         }
492         fd = ast_filehelper(filename2, (char *)chan, fmt, ACTION_OPEN);
493         if(fd >= 0)
494                 return chan->vstream;
495         ast_log(LOG_WARNING, "File %s has video but couldn't be opened\n", filename);
496         return NULL;
497 }
498
499 static int ast_readaudio_callback(void *data)
500 {
501         struct ast_filestream *s = data;
502         struct ast_frame *fr;
503         int whennext = 0;
504
505         while(!whennext) {
506                 fr = s->fmt->read(s, &whennext);
507                 if (fr) {
508                         if (ast_write(s->owner, fr)) {
509                                 ast_log(LOG_WARNING, "Failed to write frame\n");
510                                 s->owner->streamid = -1;
511                                 return 0;
512                         }
513                 } else {
514                         /* Stream has finished */
515                         s->owner->streamid = -1;
516                         return 0;
517                 }
518         }
519         if (whennext != s->lasttimeout) {
520                 s->owner->streamid = ast_sched_add(s->owner->sched, whennext/8, ast_readaudio_callback, s);
521                 s->lasttimeout = whennext;
522                 return 0;
523         }
524         return 1;
525 }
526
527 static int ast_readvideo_callback(void *data)
528 {
529         struct ast_filestream *s = data;
530         struct ast_frame *fr;
531         int whennext = 0;
532
533         while(!whennext) {
534                 fr = s->fmt->read(s, &whennext);
535                 if (fr) {
536                         if (ast_write(s->owner, fr)) {
537                                 ast_log(LOG_WARNING, "Failed to write frame\n");
538                                 s->owner->vstreamid = -1;
539                                 return 0;
540                         }
541                 } else {
542                         /* Stream has finished */
543                         s->owner->vstreamid = -1;
544                         return 0;
545                 }
546         }
547         if (whennext != s->lasttimeout) {
548                 s->owner->vstreamid = ast_sched_add(s->owner->sched, whennext/8, ast_readvideo_callback, s);
549                 s->lasttimeout = whennext;
550                 return 0;
551         }
552         return 1;
553 }
554
555 int ast_applystream(struct ast_channel *chan, struct ast_filestream *s)
556 {
557         s->owner = chan;
558         return 0;
559 }
560
561 int ast_playstream(struct ast_filestream *s)
562 {
563         if (s->fmt->format < AST_FORMAT_MAX_AUDIO)
564                 ast_readaudio_callback(s);
565         else
566                 ast_readvideo_callback(s);
567         return 0;
568 }
569
570 int ast_seekstream(struct ast_filestream *fs, long sample_offset, int whence)
571 {
572         return fs->fmt->seek(fs, sample_offset, whence);
573 }
574
575 int ast_truncstream(struct ast_filestream *fs)
576 {
577         return fs->fmt->trunc(fs);
578 }
579
580 long ast_tellstream(struct ast_filestream *fs)
581 {
582         return fs->fmt->tell(fs);
583 }
584
585 int ast_stream_fastforward(struct ast_filestream *fs, long ms)
586 {
587         /* I think this is right, 8000 samples per second, 1000 ms a second so 8
588          * samples per ms  */
589         long samples = ms * 8;
590         return ast_seekstream(fs, samples, SEEK_CUR);
591 }
592
593 int ast_stream_rewind(struct ast_filestream *fs, long ms)
594 {
595         long samples = ms * 8;
596         samples = samples * -1;
597         return ast_seekstream(fs, samples, SEEK_CUR);
598 }
599
600 int ast_closestream(struct ast_filestream *f)
601 {
602         /* Stop a running stream if there is one */
603         if (f->owner) {
604                 if (f->fmt->format < AST_FORMAT_MAX_AUDIO) {
605                         f->owner->stream = NULL;
606                         if (f->owner->streamid > -1)
607                                 ast_sched_del(f->owner->sched, f->owner->streamid);
608                         f->owner->streamid = -1;
609                 } else {
610                         f->owner->vstream = NULL;
611                         if (f->owner->vstreamid > -1)
612                                 ast_sched_del(f->owner->sched, f->owner->vstreamid);
613                         f->owner->vstreamid = -1;
614                 }
615         }
616         if (f->filename)
617                 free(f->filename);
618         f->filename = NULL;
619         f->fmt->close(f);
620         return 0;
621 }
622
623
624 int ast_fileexists(char *filename, char *fmt, char *preflang)
625 {
626         char filename2[256];
627         char tmp[256];
628         char *postfix;
629         char *prefix;
630         char *c;
631         char lang2[MAX_LANGUAGE];
632         int res = -1;
633         if (preflang && strlen(preflang)) {
634                 /* Insert the language between the last two parts of the path */
635                 strncpy(tmp, filename, sizeof(tmp) - 1);
636                 c = strrchr(tmp, '/');
637                 if (c) {
638                         *c = '\0';
639                         postfix = c+1;
640                         prefix = tmp;
641                 } else {
642                         postfix = tmp;
643                         prefix="";
644                 }
645                 snprintf(filename2, sizeof(filename2), "%s/%s/%s", prefix, preflang, postfix);
646                 res = ast_filehelper(filename2, NULL, fmt, ACTION_EXISTS);
647                 if (res < 1) {
648                         char *stringp=NULL;
649                         strncpy(lang2, preflang, sizeof(lang2)-1);
650                         stringp=lang2;
651                         strsep(&stringp, "_");
652                         if (strcmp(lang2, preflang)) {
653                                 snprintf(filename2, sizeof(filename2), "%s/%s/%s", prefix, lang2, postfix);
654                                 res = ast_filehelper(filename2, NULL, fmt, ACTION_EXISTS);
655                         }
656                 }
657         }
658         if (res < 1) {
659                 res = ast_filehelper(filename, NULL, fmt, ACTION_EXISTS);
660         }
661         return res;
662 }
663
664 int ast_filedelete(char *filename, char *fmt)
665 {
666         return ast_filehelper(filename, NULL, fmt, ACTION_DELETE);
667 }
668
669 int ast_filerename(char *filename, char *filename2, char *fmt)
670 {
671         return ast_filehelper(filename, filename2, fmt, ACTION_RENAME);
672 }
673
674 int ast_filecopy(char *filename, char *filename2, char *fmt)
675 {
676         return ast_filehelper(filename, filename2, fmt, ACTION_COPY);
677 }
678
679 int ast_streamfile(struct ast_channel *chan, char *filename, char *preflang)
680 {
681         struct ast_filestream *fs;
682         struct ast_filestream *vfs;
683
684         fs = ast_openstream(chan, filename, preflang);
685         vfs = ast_openvstream(chan, filename, preflang);
686         if (vfs)
687                 ast_log(LOG_DEBUG, "Ooh, found a video stream, too\n");
688         else
689                 ast_log(LOG_DEBUG, "Waaah, '%s' has no video stream :(\n", filename);
690         if(fs){
691                 if(ast_applystream(chan, fs))
692                         return -1;
693                 if(vfs && ast_applystream(chan, vfs))
694                         return -1;
695                 if(ast_playstream(fs))
696                         return -1;
697                 if(vfs && ast_playstream(vfs))
698                         return -1;
699 #if 1
700                 if (option_verbose > 2)
701                         ast_verbose(VERBOSE_PREFIX_3 "Playing '%s'\n", filename);
702 #endif
703                 return 0;
704         }
705         ast_log(LOG_WARNING, "Unable to open %s (format %d): %s\n", filename, chan->nativeformats, strerror(errno));
706         return -1;
707 }
708
709
710 struct ast_filestream *ast_writefile(char *filename, char *type, char *comment, int flags, int check, mode_t mode)
711 {
712         int fd,myflags;
713         struct ast_format *f;
714         struct ast_filestream *fs=NULL;
715         char *fn;
716         char *ext;
717         if (ast_pthread_mutex_lock(&formatlock)) {
718                 ast_log(LOG_WARNING, "Unable to lock format list\n");
719                 return NULL;
720         }
721         myflags = 0;
722         /* set the O_TRUNC flag if and only if there is no O_APPEND specified */
723         //if (!(flags & O_APPEND)) myflags = O_TRUNC;
724         f = formats;
725         while(f) {
726                 if (!strcasecmp(f->name, type)) {
727                         char *stringp=NULL;
728                         /* XXX Implement check XXX */
729                         ext = strdup(f->exts);
730                         stringp=ext;
731                         ext = strsep(&stringp, "|");
732                         fn = build_filename(filename, ext);
733                         fd = open(fn, flags | myflags | O_WRONLY | O_CREAT, mode);
734                         if (fd >= 0) {
735                                 errno = 0;
736                                 if ((fs = f->rewrite(fd, comment))) {
737                                         fs->trans = NULL;
738                                         fs->fmt = f;
739                                         fs->flags = flags;
740                                         fs->mode = mode;
741                                         fs->filename = strdup(filename);
742                                         fs->vfs = NULL;
743                                 } else {
744                                         ast_log(LOG_WARNING, "Unable to rewrite %s\n", fn);
745                                         close(fd);
746                                         unlink(fn);
747                                 }
748                         } else if (errno != EEXIST)
749                                 ast_log(LOG_WARNING, "Unable to open file %s: %s\n", fn, strerror(errno));
750                         free(fn);
751                         free(ext);
752                         break;
753                 }
754                 f = f->next;
755         }
756         ast_pthread_mutex_unlock(&formatlock);
757         if (!f) 
758                 ast_log(LOG_WARNING, "No such format '%s'\n", type);
759         return fs;
760 }
761
762 char ast_waitstream(struct ast_channel *c, char *breakon)
763 {
764         /* XXX Maybe I should just front-end ast_waitstream_full ? XXX */
765         int res;
766         struct ast_frame *fr;
767         while(c->stream) {
768                 res = ast_sched_wait(c->sched);
769                 if (res < 0) {
770                         if (c->stream)
771                                 ast_closestream(c->stream);
772                         if (c->vstream)
773                                 ast_closestream(c->vstream);
774                         break;
775                 }
776                 /* Setup timeout if supported */
777                 ast_settimeout(c, res);
778                 res = ast_waitfor(c, res);
779                 if (res < 0) {
780                         ast_log(LOG_WARNING, "Select failed (%s)\n", strerror(errno));
781                         return res;
782                 } else if (res > 0) {
783                         fr = ast_read(c);
784                         if (!fr) {
785 #if 0
786                                 ast_log(LOG_DEBUG, "Got hung up\n");
787 #endif
788                                 return -1;
789                         }
790                         
791                         switch(fr->frametype) {
792                         case AST_FRAME_DTMF:
793                                 res = fr->subclass;
794                                 if (strchr(breakon, res)) {
795                                         ast_frfree(fr);
796                                         return res;
797                                 }
798                                 break;
799                         case AST_FRAME_CONTROL:
800                                 switch(fr->subclass) {
801                                 case AST_CONTROL_HANGUP:
802                                         ast_frfree(fr);
803                                         return -1;
804                                 case AST_CONTROL_RINGING:
805                                 case AST_CONTROL_ANSWER:
806                                         /* Unimportant */
807                                         break;
808                                 default:
809                                         ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", fr->subclass);
810                                 }
811                         }
812                         /* Ignore */
813                         ast_frfree(fr);
814                 }
815                 ast_sched_runq(c->sched);
816         
817                 
818         }
819         return (c->_softhangup ? -1 : 0);
820 }
821
822 char ast_waitstream_fr(struct ast_channel *c, char *breakon, char *forward, char *rewind, int ms)
823 {
824         int res;
825         struct ast_frame *fr;
826         while(c->stream) {
827                 res = ast_sched_wait(c->sched);
828                 if (res < 0) {
829                         if (c->stream)
830                                 ast_closestream(c->stream);
831                         if (c->vstream)
832                                 ast_closestream(c->vstream);
833                         break;
834                 }
835                 ast_settimeout(c, res);
836                 res = ast_waitfor(c, res);
837                 if (res < 0) {
838                         ast_log(LOG_WARNING, "Select failed (%s)\n", strerror(errno));
839                         return res;
840                 } else
841                 if (res > 0) {
842                         fr = ast_read(c);
843                         if (!fr) {
844 #if 0
845                                 ast_log(LOG_DEBUG, "Got hung up\n");
846 #endif
847                                 return -1;
848                         }
849                         
850                         switch(fr->frametype) {
851                         case AST_FRAME_DTMF:
852                                 res = fr->subclass;
853                                 if (strchr(forward,res)) {
854                                         ast_stream_fastforward(c->stream, ms);
855                                 } else if (strchr(rewind,res)) {
856                                         ast_stream_rewind(c->stream, ms);
857                                 } else if (strchr(breakon, res)) {
858                                         ast_frfree(fr);
859                                         return res;
860                                 }                                       
861                                 break;
862                         case AST_FRAME_CONTROL:
863                                 switch(fr->subclass) {
864                                 case AST_CONTROL_HANGUP:
865                                         ast_frfree(fr);
866                                         return -1;
867                                 case AST_CONTROL_RINGING:
868                                 case AST_CONTROL_ANSWER:
869                                         /* Unimportant */
870                                         break;
871                                 default:
872                                         ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", fr->subclass);
873                                 }
874                         }
875                         /* Ignore */
876                         ast_frfree(fr);
877                 } else
878                         ast_sched_runq(c->sched);
879         
880                 
881         }
882         return (c->_softhangup ? -1 : 0);
883 }
884
885 char ast_waitstream_full(struct ast_channel *c, char *breakon, int audiofd, int cmdfd)
886 {
887         int res;
888         int ms;
889         int outfd;
890         struct ast_frame *fr;
891         struct ast_channel *rchan;
892         
893         while(c->stream) {
894                 ms = ast_sched_wait(c->sched);
895                 if (ms < 0) {
896                         if (c->stream)
897                                 ast_closestream(c->stream);
898                         if (c->vstream)
899                                 ast_closestream(c->vstream);
900                         break;
901                 }
902                 ast_settimeout(c, ms);
903                 rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms);
904                 if (!rchan && (outfd < 0) && (ms)) {
905                         ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno));
906                         return -1;
907                 } else if (outfd > -1) {
908                         /* The FD we were watching has something waiting */
909                         return 1;
910                 } else if (rchan) {
911                         fr = ast_read(c);
912                         if (!fr) {
913 #if 0
914                                 ast_log(LOG_DEBUG, "Got hung up\n");
915 #endif
916                                 return -1;
917                         }
918                         
919                         switch(fr->frametype) {
920                         case AST_FRAME_DTMF:
921                                 res = fr->subclass;
922                                 if (strchr(breakon, res)) {
923                                         ast_frfree(fr);
924                                         return res;
925                                 }
926                                 break;
927                         case AST_FRAME_CONTROL:
928                                 switch(fr->subclass) {
929                                 case AST_CONTROL_HANGUP:
930                                         ast_frfree(fr);
931                                         return -1;
932                                 case AST_CONTROL_RINGING:
933                                 case AST_CONTROL_ANSWER:
934                                         /* Unimportant */
935                                         break;
936                                 default:
937                                         ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", fr->subclass);
938                                 }
939                         case AST_FRAME_VOICE:
940                                 /* Write audio if appropriate */
941                                 if (audiofd > -1)
942                                         write(audiofd, fr->data, fr->datalen);
943                         }
944                         /* Ignore */
945                         ast_frfree(fr);
946                 }
947                 ast_sched_runq(c->sched);
948         
949                 
950         }
951         return (c->_softhangup ? -1 : 0);
952 }