aboutsummaryrefslogtreecommitdiffhomepage
path: root/libmpdemux/dvbin.c
blob: 5531b6098a0a89fe257c4e4fb9155ffcd41ff66e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
/*

dvbstream
(C) Dave Chapman <dave@dchapman.com> 2001, 2002.

The latest version can be found at http://www.linuxstb.org/dvbstream

Modified for use with MPlayer, for details see the CVS changelog at
http://www.mplayerhq.hu/cgi-bin/cvsweb.cgi/main/
$Id$

Copyright notice:

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <sys/poll.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>

#include "stream.h"
#include "demuxer.h"
#include "help_mp.h"
#include "../m_option.h"
#include "../m_struct.h"

#include "dvbin.h"


#define MAX_CHANNELS 8
#define CHANNEL_LINE_LEN 256
#define min(a, b) ((a) <= (b) ? (a) : (b))


//TODO: CAMBIARE list_ptr e da globale a per_priv


static struct stream_priv_s
{
	char *prog;
	int card;
	char *type;
	int vid, aid;
	char *file;
}
stream_defaults =
{
	"", 1, "", 0, 0, NULL
};

#define ST_OFF(f) M_ST_OFF(struct stream_priv_s, f)

/// URL definition
static m_option_t stream_params[] = {
	{"prog", ST_OFF(prog), CONF_TYPE_STRING, 0, 0 ,0, NULL},
	{"card", ST_OFF(card), CONF_TYPE_INT, M_OPT_RANGE, 1, 4, NULL},
	{"type", ST_OFF(type), CONF_TYPE_STRING, 0, 0 ,0, NULL},
	{"vid",  ST_OFF(vid),  CONF_TYPE_INT, 0, 0 ,0, NULL},
	{"aid",  ST_OFF(aid),  CONF_TYPE_INT, 0, 0 ,0, NULL},
	{"file", ST_OFF(file), CONF_TYPE_STRING, 0, 0 ,0, NULL},

	{"hostname", 	ST_OFF(prog), CONF_TYPE_STRING, 0, 0, 0, NULL },
	{"username", 	ST_OFF(card), CONF_TYPE_INT, M_OPT_RANGE, 1, 4, NULL},
	{NULL, NULL, 0, 0, 0, 0, NULL}
};

static struct m_struct_st stream_opts = {
	"dvbin",
	sizeof(struct stream_priv_s),
	&stream_defaults,
	stream_params
};



m_option_t dvbin_opts_conf[] = {
	{"prog", &stream_defaults.prog, CONF_TYPE_STRING, 0, 0 ,0, NULL},
	{"card", &stream_defaults.card, CONF_TYPE_INT, M_OPT_RANGE, 1, 4, NULL},
	{"type", "DVB card type is autodetected and can't be overridden\n", CONF_TYPE_PRINT, CONF_NOCFG, 0 ,0, NULL},
	{"vid",  &stream_defaults.vid,  CONF_TYPE_INT, 0, 0 ,0, NULL},
	{"aid",  &stream_defaults.aid,  CONF_TYPE_INT, 0, 0 ,0, NULL},
	{"file", &stream_defaults.file, CONF_TYPE_STRING, 0, 0 ,0, NULL},

	{NULL, NULL, 0, 0, 0, 0, NULL}
};




extern int dvb_set_ts_filt(int fd, uint16_t pid, dmx_pes_type_t pestype);
extern int dvb_demux_stop(int fd);
extern int dvb_get_tuner_type(int fd);
int dvb_open_devices(dvb_priv_t *priv, int n, int demux_cnt, int *pids);
int dvb_fix_demuxes(dvb_priv_t *priv, int cnt, int *pids);

extern int dvb_tune(dvb_priv_t *priv, int freq, char pol, int srate, int diseqc, int tone,
		fe_spectral_inversion_t specInv, fe_modulation_t modulation, fe_guard_interval_t guardInterval,
		fe_transmit_mode_t TransmissionMode, fe_bandwidth_t bandWidth, fe_code_rate_t HP_CodeRate,
		fe_code_rate_t LP_CodeRate, fe_hierarchy_t hier);
extern char *dvb_dvrdev[4], *dvb_demuxdev[4], *dvb_frontenddev[4];

static dvb_config_t *dvb_config = NULL;


static dvb_channels_list *dvb_get_channels(char *filename, int type)
{
	dvb_channels_list  *list;
	FILE *f;
	uint8_t line[CHANNEL_LINE_LEN];

	int fields, cnt, pcnt;
	dvb_channel_t *ptr, *tmp, chn;
	char *tmp_lcr, *tmp_hier, *inv, *bw, *cr, *mod, *transm, *gi, *vpid_str, *apid_str;
	const char *cbl_conf = "%a[^:]:%d:%a[^:]:%d:%a[^:]:%a[^:]:%a[^:]:%a[^:]\n";
	const char *sat_conf = "%a[^:]:%d:%c:%d:%d:%a[^:]:%a[^:]\n";
	const char *ter_conf = "%a[^:]:%d:%a[^:]:%a[^:]:%a[^:]:%a[^:]:%a[^:]:%a[^:]:%a[^:]:%a[^:]:%a[^:]:%a[^:]\n";
	const char *atsc_conf = "%a[^:]:%d:%a[^:]:%a[^:]:%a[^:]\n";
	
	mp_msg(MSGT_DEMUX, MSGL_V, "CONFIG_READ FILE: %s, type: %d\n", filename, type);
	if((f=fopen(filename, "r"))==NULL)
	{
		mp_msg(MSGT_DEMUX, MSGL_FATAL, "CAN'T READ CONFIG FILE %s\n", filename);
		return NULL;
	}

	list = malloc(sizeof(dvb_channels_list));
	if(list == NULL)
	{
		mp_msg(MSGT_DEMUX, MSGL_V, "DVB_GET_CHANNELS: couldn't malloc enough memory\n");
		return NULL;
	}

	ptr = &chn;
	list->NUM_CHANNELS = 0;
	list->channels = NULL;
	while(! feof(f))
	{
		if( fgets(line, CHANNEL_LINE_LEN, f) == NULL )
			continue;

		if((line[0] == '#') || (strlen(line) == 0))
			continue;


		apid_str = vpid_str = NULL;
		ptr->pids_cnt = 0;
		if(type == TUNER_TER)
		{
			fields = sscanf(line, ter_conf,
				&ptr->name, &ptr->freq, &inv, &bw, &cr, &tmp_lcr, &mod,
				&transm, &gi, &tmp_hier, &vpid_str, &apid_str);
			mp_msg(MSGT_DEMUX, MSGL_V,
				"TER, NUM: %d, NUM_FIELDS: %d, NAME: %s, FREQ: %d",
				list->NUM_CHANNELS, fields, ptr->name, ptr->freq);
		}
		else if(type == TUNER_CBL)
		{
			fields = sscanf(line, cbl_conf,
				&ptr->name, &ptr->freq, &inv, &ptr->srate,
				&cr, &mod, &vpid_str, &apid_str);
			mp_msg(MSGT_DEMUX, MSGL_V,
				"CBL, NUM: %d, NUM_FIELDS: %d, NAME: %s, FREQ: %d, SRATE: %d",
				list->NUM_CHANNELS, fields, ptr->name, ptr->freq, ptr->srate);
		}
#ifdef DVB_ATSC
		else if(type == TUNER_ATSC)
		{
			fields = sscanf(line, atsc_conf,
				&ptr->name, &ptr->freq, &mod, &vpid_str, &apid_str);
			mp_msg(MSGT_DEMUX, MSGL_V,
				"ATSC, NUM: %d, NUM_FIELDS: %d, NAME: %s, FREQ: %d\n",
				list->NUM_CHANNELS, fields, ptr->name, ptr->freq);
		}
#endif
		else //SATELLITE
		{
			fields = sscanf(line, sat_conf,
				&ptr->name, &ptr->freq, &ptr->pol, &ptr->diseqc, &ptr->srate, &vpid_str, &apid_str);
			ptr->pol = toupper(ptr->pol);
			ptr->freq *=  1000UL;
			ptr->srate *=  1000UL;
			ptr->tone = -1;
			ptr->inv = INVERSION_AUTO;
			ptr->cr = FEC_AUTO;
			if((ptr->diseqc > 4) || (ptr->diseqc < 0))
			    continue;
			if(ptr->diseqc > 0)
			    ptr->diseqc--;
			mp_msg(MSGT_DEMUX, MSGL_V,
				"SAT, NUM: %d, NUM_FIELDS: %d, NAME: %s, FREQ: %d, SRATE: %d, POL: %c, DISEQC: %d",
				list->NUM_CHANNELS, fields, ptr->name, ptr->freq, ptr->srate, ptr->pol, ptr->diseqc);
		}

		if(vpid_str != NULL)
		{
			pcnt = sscanf(vpid_str, "%d+%d+%d+%d+%d+%d+%d", &ptr->pids[0], &ptr->pids[1], &ptr->pids[2], &ptr->pids[3],
				&ptr->pids[4], &ptr->pids[5], &ptr->pids[6]);
			if(pcnt > 0)
			{
				ptr->pids_cnt = pcnt;
				fields++;
			}
		}
		
		if(apid_str != NULL)
		{
			cnt = ptr->pids_cnt;
			pcnt = sscanf(apid_str, "%d+%d+%d+%d+%d+%d+%d+%d", &ptr->pids[cnt], &ptr->pids[cnt+1], &ptr->pids[cnt+2],
				&ptr->pids[cnt+3], &ptr->pids[cnt+4], &ptr->pids[cnt+5], &ptr->pids[cnt+6], &ptr->pids[cnt+7]);
			if(pcnt > 0)
			{
				ptr->pids_cnt += pcnt;
				fields++;
			}
		}

		if((fields < 3) || (ptr->pids_cnt <= 0) || (ptr->freq == 0) || (strlen(ptr->name) == 0))
			continue;


		ptr->pids[ptr->pids_cnt] = 0;	//PID 0 is the PAT
		ptr->pids_cnt++;
		mp_msg(MSGT_DEMUX, MSGL_V, " PIDS: ");
		for(cnt = 0; cnt < ptr->pids_cnt; cnt++)
			mp_msg(MSGT_DEMUX, MSGL_V, " %d ", ptr->pids[cnt]);
		mp_msg(MSGT_DEMUX, MSGL_V, "\n");
		
		if((type == TUNER_TER) || (type == TUNER_CBL))
		{
			if(! strcmp(inv, "INVERSION_ON"))
				ptr->inv = INVERSION_ON;
			else if(! strcmp(inv, "INVERSION_OFF"))
				ptr->inv = INVERSION_OFF;
			else
				ptr->inv = INVERSION_AUTO;


			if(! strcmp(cr, "FEC_1_2"))
				ptr->cr =FEC_1_2;
			else if(! strcmp(cr, "FEC_2_3"))
				ptr->cr =FEC_2_3;
			else if(! strcmp(cr, "FEC_3_4"))
				ptr->cr =FEC_3_4;
#ifdef HAVE_DVB_HEAD
			else if(! strcmp(cr, "FEC_4_5"))
				ptr->cr =FEC_4_5;
			else if(! strcmp(cr, "FEC_6_7"))
				ptr->cr =FEC_6_7;
			else if(! strcmp(cr, "FEC_8_9"))
				ptr->cr =FEC_8_9;
#endif
			else if(! strcmp(cr, "FEC_5_6"))
				ptr->cr =FEC_5_6;
			else if(! strcmp(cr, "FEC_7_8"))
				ptr->cr =FEC_7_8;
			else if(! strcmp(cr, "FEC_NONE"))
				ptr->cr =FEC_NONE;
			else ptr->cr =FEC_AUTO;
		}
	

		if((type == TUNER_TER) || (type == TUNER_CBL) || (type == TUNER_ATSC))
		{
			if(! strcmp(mod, "QAM_128"))
				ptr->mod = QAM_128;
			else if(! strcmp(mod, "QAM_256"))
				ptr->mod = QAM_256;
			else if(! strcmp(mod, "QAM_64"))
				ptr->mod = QAM_64;
			else if(! strcmp(mod, "QAM_32"))
				ptr->mod = QAM_32;
			else if(! strcmp(mod, "QAM_16"))
				ptr->mod = QAM_16;
#ifdef DVB_ATSC	
			else if(! strcmp(mod, "VSB_8") || ! strcmp(mod, "8VSB"))
				ptr->mod = VSB_8;
			else if(! strcmp(mod, "VSB_16") || !strcmp(mod, "16VSB"))
				ptr->mod = VSB_16;

			ptr->inv = INVERSION_AUTO;
#endif
		}

		if(type == TUNER_TER)
		{
			if(! strcmp(bw, "BANDWIDTH_6_MHZ"))
				ptr->bw = BANDWIDTH_6_MHZ;
			else if(! strcmp(bw, "BANDWIDTH_7_MHZ"))
				ptr->bw = BANDWIDTH_7_MHZ;
			else if(! strcmp(bw, "BANDWIDTH_8_MHZ"))
				ptr->bw = BANDWIDTH_8_MHZ;


			if(! strcmp(transm, "TRANSMISSION_MODE_2K"))
				ptr->trans = TRANSMISSION_MODE_2K;
			else if(! strcmp(transm, "TRANSMISSION_MODE_8K"))
				ptr->trans = TRANSMISSION_MODE_8K;


			if(! strcmp(gi, "GUARD_INTERVAL_1_32"))
				ptr->gi = GUARD_INTERVAL_1_32;
			else if(! strcmp(gi, "GUARD_INTERVAL_1_16"))
				ptr->gi = GUARD_INTERVAL_1_16;
			else if(! strcmp(gi, "GUARD_INTERVAL_1_8"))
				ptr->gi = GUARD_INTERVAL_1_8;
			else ptr->gi = GUARD_INTERVAL_1_4;
			
			if(! strcmp(tmp_lcr, "FEC_1_2"))
				ptr->cr_lp =FEC_1_2;
			else if(! strcmp(tmp_lcr, "FEC_2_3"))
				ptr->cr_lp =FEC_2_3;
			else if(! strcmp(tmp_lcr, "FEC_3_4"))
				ptr->cr_lp =FEC_3_4;
#ifdef HAVE_DVB_HEAD
			else if(! strcmp(tmp_lcr, "FEC_4_5"))
				ptr->cr_lp =FEC_4_5;
			else if(! strcmp(tmp_lcr, "FEC_6_7"))
				ptr->cr_lp =FEC_6_7;
			else if(! strcmp(tmp_lcr, "FEC_8_9"))
				ptr->cr_lp =FEC_8_9;
#endif
			else if(! strcmp(tmp_lcr, "FEC_5_6"))
				ptr->cr_lp =FEC_5_6;
			else if(! strcmp(tmp_lcr, "FEC_7_8"))
				ptr->cr_lp =FEC_7_8;
			else if(! strcmp(tmp_lcr, "FEC_NONE"))
				ptr->cr_lp =FEC_NONE;
			else ptr->cr_lp =FEC_AUTO;
			
			
			if(! strcmp(tmp_hier, "HIERARCHY_1"))
				ptr->hier = HIERARCHY_1;
			else if(! strcmp(tmp_hier, "HIERARCHY_2"))
				ptr->hier = HIERARCHY_2;
			else if(! strcmp(tmp_hier, "HIERARCHY_4"))
				ptr->hier = HIERARCHY_4;
#ifdef HAVE_DVB_HEAD				
			else if(! strcmp(tmp_hier, "HIERARCHY_AUTO"))
				ptr->hier = HIERARCHY_AUTO;
#endif
			else	ptr->hier = HIERARCHY_NONE;
		}

		tmp = (dvb_channel_t*)realloc(list->channels, sizeof(dvb_channel_t) * (list->NUM_CHANNELS + 1));
		if(tmp == NULL)
			break;

		list->channels = tmp;
		memcpy(&(list->channels[list->NUM_CHANNELS]), ptr, sizeof(dvb_channel_t));
		list->NUM_CHANNELS++;
	}

	fclose(f);
	if(list->NUM_CHANNELS == 0)
	{
		if(list->channels != NULL)
			free(list->channels);
		free(list);
		return NULL;
	}

	list->current = 0;
	return list;
}



static int dvb_streaming_read(stream_t *stream, char *buffer, int size)
{
	struct pollfd pfds[1];
	int pos=0, tries, rk, fd;
	dvb_priv_t *priv  = (dvb_priv_t *) stream->priv;

	mp_msg(MSGT_DEMUX, MSGL_DBG3, "dvb_streaming_read(%d)\n", size);

	tries = priv->retry + 1;
	
	fd = stream->fd;
	while(pos < size)
	{
		pfds[0].fd = fd;
		pfds[0].events = POLLIN | POLLPRI;

		rk = size - pos;
		if(poll(pfds, 1, 500) <= 0)
		{
			errno = 0;
			mp_msg(MSGT_DEMUX, MSGL_ERR, "dvb_streaming_read, attempt N. %d failed with errno %d when reading %d bytes\n", tries, errno, size-pos);
			if(--tries > 0)
				continue;
			else
				break;
		}
		if((rk = read(fd, &buffer[pos], rk)) > 0)
		{
			pos += rk;
			mp_msg(MSGT_DEMUX, MSGL_DBG3, "ret (%d) bytes\n", pos);
		}
	}
		

	if(! pos)
		mp_msg(MSGT_DEMUX, MSGL_ERR, "dvb_streaming_read, return %d bytes\n", pos);

	return pos;
}

static void dvbin_close(stream_t *stream);

int dvb_set_channel(dvb_priv_t *priv, int card, int n)
{
	dvb_channels_list *new_list;
	dvb_channel_t *channel;
	int do_tuning;
	stream_t *stream  = (stream_t*) priv->stream;
	char buf[4096];
	dvb_config_t *conf = (dvb_config_t *) priv->config;
	int devno;
	int i;

	if((card < 0) || (card > conf->count))
	{
		mp_msg(MSGT_DEMUX, MSGL_ERR, "dvb_set_channel: INVALID CARD NUMBER: %d vs %d, abort\n", card, conf->count);
		return 0;
	}
	
	devno = conf->cards[card].devno;
	new_list = conf->cards[card].list;
	if((n > new_list->NUM_CHANNELS) || (n < 0))
	{
		mp_msg(MSGT_DEMUX, MSGL_ERR, "dvb_set_channel: INVALID CHANNEL NUMBER: %d, for card %d, abort\n", n, card);
		return 0;
	}
	channel = &(new_list->channels[n]);
	
	if(priv->is_on)	//the fds are already open and we have to stop the demuxers
	{
		for(i = 0; i < priv->demux_fds_cnt; i++)
			dvb_demux_stop(priv->demux_fds[i]);
			
		priv->retry = 0;
		while(dvb_streaming_read(stream, buf, 4096) > 0);	//empty both the stream's and driver's buffer
		if(priv->card != card)
		{
			dvbin_close(stream);
			if(! dvb_open_devices(priv, devno, channel->pids_cnt, channel->pids))
			{
				mp_msg(MSGT_DEMUX, MSGL_ERR, "DVB_SET_CHANNEL, COULDN'T OPEN DEVICES OF CARD: %d, EXIT\n", card);
				return 0;
			}
			strcpy(priv->prev_tuning, "");
		}
		else	//close all demux_fds with pos > pids required for the new channel or open other demux_fds if we have too few
		{	
			if(! dvb_fix_demuxes(priv, channel->pids_cnt, channel->pids))
				return 0;
		}
	}
	else
	{
		if(! dvb_open_devices(priv, devno, channel->pids_cnt, channel->pids))
		{
			mp_msg(MSGT_DEMUX, MSGL_ERR, "DVB_SET_CHANNEL2, COULDN'T OPEN DEVICES OF CARD: %d, EXIT\n", card);
			return 0;
		}
		strcpy(priv->prev_tuning, "");
	}

	dvb_config->priv = priv;
	priv->card = card;
	priv->list = new_list;
	priv->retry = 5;
	new_list->current = n;
	stream->fd = priv->dvr_fd;
	mp_msg(MSGT_DEMUX, MSGL_V, "DVB_SET_CHANNEL: new channel name=%s, card: %d, channel %d\n", channel->name, card, n);

	switch(priv->tuner_type)
	{
		case TUNER_SAT:
			sprintf(priv->new_tuning, "%d|%09d|%09d|%d|%c", priv->card, channel->freq, channel->srate, channel->diseqc, channel->pol);
			break;

		case TUNER_TER:
			sprintf(priv->new_tuning, "%d|%09d|%d|%d|%d|%d|%d|%d", priv->card, channel->freq, channel->inv,
				channel->bw, channel->cr, channel->mod, channel->trans, channel->gi);
		  break;

		case TUNER_CBL:
			sprintf(priv->new_tuning, "%d|%09d|%d|%d|%d|%d", priv->card, channel->freq, channel->inv, channel->srate,
				channel->cr, channel->mod);
		break;
#ifdef DVB_ATSC
		case TUNER_ATSC:
			sprintf(priv->new_tuning, "%d|%09d|%d", priv->card, channel->freq, channel->mod);
		break;
#endif
	}



	if(strcmp(priv->prev_tuning, priv->new_tuning))
	{
		mp_msg(MSGT_DEMUX, MSGL_V, "DIFFERENT TUNING THAN THE PREVIOUS: %s  -> %s\n", priv->prev_tuning, priv->new_tuning);
		strcpy(priv->prev_tuning, priv->new_tuning);
		do_tuning = 1;
	}
	else
	{
		mp_msg(MSGT_DEMUX, MSGL_V, "SAME TUNING PARAMETERS, NO TUNING\n");
		do_tuning = 0;
	}

	stream->eof=1;
	stream_reset(stream);


	if(do_tuning)
		if (! dvb_tune(priv, channel->freq, channel->pol, channel->srate, channel->diseqc, channel->tone,
			channel->inv, channel->mod, channel->gi, channel->trans, channel->bw, channel->cr, channel->cr_lp, channel->hier))
			return 0;


	priv->is_on = 1;

	//sets demux filters and restart the stream
	for(i = 0; i < channel->pids_cnt; i++)
	{
		if(! dvb_set_ts_filt(priv->demux_fds[i], channel->pids[i], DMX_PES_OTHER))
			return 0;
	}
	
	return 1;
}



int dvb_step_channel(dvb_priv_t *priv, int dir)
{
	int new_current;
	dvb_channels_list *list;

	mp_msg(MSGT_DEMUX, MSGL_V, "DVB_STEP_CHANNEL dir %d\n", dir);

	if(priv == NULL)
	{
		mp_msg(MSGT_DEMUX, MSGL_ERR, "dvb_step_channel: NULL priv_ptr, quit\n");
		return 0;
	}

	list = priv->list;
	if(list == NULL)
	{
		mp_msg(MSGT_DEMUX, MSGL_ERR, "dvb_step_channel: NULL list_ptr, quit\n");
		return 0;
	}


	if(dir == DVB_CHANNEL_HIGHER)
	{
		if(list->current == list->NUM_CHANNELS-1)
			return 0;

		new_current = list->current + 1;
	}
	else
	{
		if(list->current == 0)
			return 0;

		new_current = list->current - 1;
	}

	return dvb_set_channel(priv, priv->card, new_current);
}




extern char *get_path(char *);

static void dvbin_close(stream_t *stream)
{
	int i;
	dvb_priv_t *priv  = (dvb_priv_t *) stream->priv;

	for(i = priv->demux_fds_cnt-1; i >= 0; i--)
	{
		priv->demux_fds_cnt--;
		mp_msg(MSGT_DEMUX, MSGL_V, "DVBIN_CLOSE, close(%d), fd=%d, COUNT=%d\n", i, priv->demux_fds[i], priv->demux_fds_cnt);
		close(priv->demux_fds[i]);
	}
	close(priv->dvr_fd);

	close(priv->fe_fd);
#ifdef HAVE_DVB
	close(priv->sec_fd);
#endif

	priv->is_on = 0;
	dvb_config->priv = NULL;
}


static int dvb_streaming_start(dvb_priv_t *priv, struct stream_priv_s *opts, int tuner_type, char *progname)
{
	int i;
	dvb_channel_t *channel = NULL;
	stream_t *stream  = (stream_t*) priv->stream;


	mp_msg(MSGT_DEMUX, MSGL_INFO, "code taken from dvbstream for mplayer v0.4pre1 - (C) Dave Chapman 2001\n");
	mp_msg(MSGT_DEMUX, MSGL_INFO, "Released under the GPL.\n");
	mp_msg(MSGT_DEMUX, MSGL_INFO, "Latest version available from http://www.linuxstb.org/\n");
	mp_msg(MSGT_DEMUX, MSGL_V, 	  "PROG: %s, CARD: %d, VID: %d, AID: %d, TYPE: %s, FILE: %s\n",
	    opts->prog, opts->card, opts->vid, opts->aid,  opts->type, opts->file);

	priv->is_on = 0;

			i = 0;
			while((channel == NULL) && i < priv->list->NUM_CHANNELS)
			{
				if(! strcmp(priv->list->channels[i].name, progname))
					channel = &(priv->list->channels[i]);

				i++;
			}

			if(channel != NULL)
			{
				priv->list->current = i-1;
				mp_msg(MSGT_DEMUX, MSGL_V, "PROGRAM NUMBER %d: name=%s, freq=%u\n", i-1, channel->name, channel->freq);
			}
		else
		{
				mp_msg(MSGT_DEMUX, MSGL_ERR, "\n\nDVBIN: no such channel \"%s\"\n\n", progname);
	  return 0;
	}


	strcpy(priv->prev_tuning, "");
	if(!dvb_set_channel(priv, priv->card, priv->list->current))
	{
		mp_msg(MSGT_DEMUX, MSGL_ERR, "ERROR, COULDN'T SET CHANNEL  %i: ", priv->list->current);
		dvbin_close(stream);
		return 0;
	}

	mp_msg(MSGT_DEMUX, MSGL_V,  "SUCCESSFUL EXIT from dvb_streaming_start\n");

	return 1;
}




static int dvb_open(stream_t *stream, int mode, void *opts, int *file_format)
{
	// I don't force  the file format bacause, although it's almost always TS,
	// there are some providers that stream an IP multicast with M$ Mpeg4 inside
	struct stream_priv_s* p = (struct stream_priv_s*)opts;
	dvb_priv_t *priv;
	char *progname;
	int tuner_type = 0;


	if(mode != STREAM_READ)
		return STREAM_UNSUPORTED;

	stream->priv = (dvb_priv_t*) malloc(sizeof(dvb_priv_t));
	if(stream->priv ==  NULL)
		return STREAM_ERROR;

	priv = (dvb_priv_t *)stream->priv;
	priv->stream = stream;
	dvb_config = dvb_get_config();
	if(dvb_config == NULL)
	{
		free(priv);
		mp_msg(MSGT_DEMUX, MSGL_ERR, "DVB CONFIGURATION IS EMPTY, exit\n");
		return STREAM_ERROR;
	}
	dvb_config->priv = priv;
	priv->config = dvb_config;

	if(p->card < 1 || p->card > priv->config->count)
 	{
		free(priv);
		mp_msg(MSGT_DEMUX, MSGL_ERR, "NO CONFIGURATION FOUND FOR CARD N. %d, exit\n", p->card);
 		return STREAM_ERROR;
 	}
	priv->card = p->card - 1;
	
	tuner_type = priv->config->cards[priv->card].type;

	if(tuner_type == 0)
	{
		free(priv);
		mp_msg(MSGT_DEMUX, MSGL_V, "OPEN_DVB: UNKNOWN OR UNDETECTABLE TUNER TYPE, EXIT\n");
		return STREAM_ERROR;
	}


	priv->tuner_type = tuner_type;

	mp_msg(MSGT_DEMUX, MSGL_V, "OPEN_DVB: prog=%s, card=%d, type=%d, vid=%d, aid=%d\n",
		p->prog, priv->card+1, priv->tuner_type, p->vid, p->aid);

	priv->list = priv->config->cards[priv->card].list;
	
	if((! strcmp(p->prog, "")) && (priv->list != NULL))
		progname = priv->list->channels[0].name;
	else
		progname = p->prog;


	if(! dvb_streaming_start(priv, p, tuner_type, progname))
	{
		free(stream->priv);
		stream->priv = NULL;
		return STREAM_ERROR;
	}

	stream->type = STREAMTYPE_DVB;
	stream->fill_buffer = dvb_streaming_read;
	stream->close = dvbin_close;
	m_struct_free(&stream_opts, opts);

    return STREAM_OK;
}

#define MAX_CARDS 4
dvb_config_t *dvb_get_config()
{
	int i, fd, type, size;
	char filename[30], *conf_file, *name;
	dvb_channels_list *list;
	dvb_card_config_t *cards = NULL;
	dvb_config_t *conf = NULL;
	
	if(dvb_config != NULL)
		return dvb_config;
			
	conf = (dvb_config_t*) malloc(sizeof(dvb_config_t));
	if(conf == NULL)
		return NULL;

	conf->priv = NULL;	
	conf->count = 0;
	conf->cards = NULL;
	for(i=0; i<MAX_CARDS; i++)
	{
		sprintf(filename, "/dev/dvb/adapter%d/frontend0", i);
		fd = open(filename, O_RDWR | O_NONBLOCK);
		if(fd < 0)
		{
			mp_msg(MSGT_DEMUX, MSGL_V, "DVB_CONFIG, can't open device %s, skipping\n", filename);
			continue;
		}
			
		type = dvb_get_tuner_type(fd);
		close(fd);
		if(type != TUNER_SAT && type != TUNER_TER && type != TUNER_CBL && type != TUNER_ATSC)
		{
			mp_msg(MSGT_DEMUX, MSGL_V, "DVB_CONFIG, can't detect tuner type of card %d, skipping\n", i);
			continue;
		}
		
		switch(type)
			{
				case TUNER_TER:
				conf_file = get_path("channels.conf.ter");
					break;
				case TUNER_CBL:
				conf_file = get_path("channels.conf.cbl");
					break;
				case TUNER_SAT:
				conf_file = get_path("channels.conf.sat");
					break;
				case TUNER_ATSC:
				conf_file = get_path("channels.conf.atsc");
					break;
			}
		
		if((access(conf_file, F_OK | R_OK) != 0))
			conf_file = get_path("channels.conf");

		list = dvb_get_channels(conf_file, type);
		if(list == NULL)
			continue;
		
		size = sizeof(dvb_card_config_t) * (conf->count + 1);
		cards = realloc(conf->cards, size);

		if(cards == NULL)
	{
			fprintf(stderr, "DVB_CONFIG, can't realloc %d bytes, skipping\n", size);
			continue;
	}

		name = (char*) malloc(20);
		if(name==NULL)
	{
			fprintf(stderr, "DVB_CONFIG, can't realloc 20 bytes, skipping\n");
			continue;
	}

		conf->cards = cards;
		conf->cards[conf->count].devno = i;
		conf->cards[conf->count].list = list;
		conf->cards[conf->count].type = type;
		sprintf(name, "DVB-%c card n. %d", type==TUNER_TER ? 'T' : (type==TUNER_CBL ? 'C' : 'S'), conf->count+1);
		conf->cards[conf->count].name = name;
		conf->count++;
	}

	if(conf->count == 0)
	{
		free(conf);
		conf = NULL;
	}

	dvb_config = conf;
	return conf;
}



stream_info_t stream_info_dvb = {
	"Dvb Input",
	"dvbin",
	"Nico",
	"based on the code from ??? (probably Arpi)",
	dvb_open, 			
	{ "dvb", NULL },
	&stream_opts,
	1 				// Urls are an option string
};