input.c 54.5 KB
Newer Older
1
2
/*****************************************************************************
 * input.c: input thread
Michel Kaempf's avatar
Michel Kaempf committed
3
4
 * Read an MPEG2 stream, demultiplex and parse it before sending it to
 * decoders.
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
 *****************************************************************************
 * Copyright (C) 1998, 1999, 2000 VideoLAN
 *
 * Authors:
 *
 * 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., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
24
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
25

26
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
27
 * Preamble
28
 *****************************************************************************/
29
#include <errno.h>                                                  /* errno */
30
31
#include <sys/types.h>                        /* on BSD, uio.h needs types.h */
#include <sys/uio.h>                                            /* "input.h" */
32
#include <string.h>                                            /* strerror() */
Michel Kaempf's avatar
Michel Kaempf committed
33

34
35
#include <stdlib.h>                                                /* free() */
#include <netinet/in.h>                                           /* ntohs() */
Michel Kaempf's avatar
Michel Kaempf committed
36

37
#include "threads.h"
Michel Kaempf's avatar
Michel Kaempf committed
38
39
40
41
#include "common.h"
#include "config.h"
#include "mtime.h"
#include "intf_msg.h"
42
#include "plugins.h"
Michel Kaempf's avatar
Michel Kaempf committed
43
44
45
46
47
48
49
50
51
52
#include "debug.h"

#include "input.h"
#include "input_psi.h"
#include "input_pcr.h"
#include "input_netlist.h"
#include "decoder_fifo.h"
#include "input_file.h"
#include "input_network.h"

53
#include "audio_output.h"                                   /* aout_thread_t */
54

55
56
#include "audio_decoder.h"                                  /* adec_thread_t */

57
58
59
#include "ac3_decoder.h"              /* ac3dec_t (for ac3_decoder_thread.h) */
#include "ac3_decoder_thread.h"                           /* ac3dec_thread_t */

60
61
62
63
64
65
66
67
68
69
70
#include "video.h"                          /* picture_t (for video_output.h) */
#include "video_output.h"                                   /* vout_thread_t */

#include "vdec_idct.h"                     /* dctelem_t (for video_parser.h) */
#include "vdec_motion.h"                  /* f_motion_t (for video_parser.h) */
#include "vpar_blocks.h"                /* macroblock_t (for video_parser.h) */
#include "vpar_headers.h"                 /* sequence_t (for video_parser.h) */
#include "vpar_synchro.h"            /* video_synchro_t (for video_parser.h) */
#include "video_parser.h"                                   /* vpar_thread_t */

#include "spu_decoder.h"                                  /* spudec_thread_t */
Michel Lespinasse's avatar
Yop,    
Michel Lespinasse committed
71
72

#include "main.h"
Michel Kaempf's avatar
Michel Kaempf committed
73

74
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
75
 * Local prototypes
76
 *****************************************************************************/
77
78
79
80
81
82
83
84
static void RunThread   ( input_thread_t *p_input );
static void ErrorThread ( input_thread_t *p_input );
static void EndThread   ( input_thread_t *p_input );

static __inline__ int   input_ReadPacket( input_thread_t *p_input );
static __inline__ void  input_SortPacket( input_thread_t *p_input,
                                          ts_packet_t *ts_packet );
static __inline__ void  input_DemuxTS( input_thread_t *p_input,
Michel Kaempf's avatar
Michel Kaempf committed
85
                                       ts_packet_t *ts_packet,
86
87
88
89
90
91
92
93
94
                                       es_descriptor_t *es_descriptor );
static __inline__ void  input_DemuxPES( input_thread_t *p_input,
                                        ts_packet_t *ts_packet,
                                        es_descriptor_t *p_es_descriptor,
                                        boolean_t b_unit_start, boolean_t b_packet_lost );
static __inline__ void  input_DemuxPSI( input_thread_t *p_input,
                                        ts_packet_t *ts_packet,
                                        es_descriptor_t *p_es_descriptor,
                                        boolean_t b_unit_start, boolean_t b_packet_lost );
Michel Kaempf's avatar
Michel Kaempf committed
95

96
/*****************************************************************************
97
 * input_CreateThread: creates a new input thread
98
 *****************************************************************************
99
100
101
102
 * This function creates a new input, and returns a pointer
 * to its description. On error, it returns NULL.
 * If pi_status is NULL, then the function will block until the thread is ready.
 * If not, it will be updated using one of the THREAD_* constants.
103
 *****************************************************************************/
104
105
input_thread_t *input_CreateThread ( int i_method, char *psz_source, int i_port, int i_vlan,
                                     p_vout_thread_t p_vout, p_aout_thread_t p_aout, int *pi_status )
Michel Kaempf's avatar
Michel Kaempf committed
106
{
107
108
109
110
    input_thread_t *    p_input;                        /* thread descriptor */
    int                 i_status;                           /* thread status */
    int                 i_index;          /* index for tables initialization */

111
112
113
114
    /* Allocate descriptor */
    intf_DbgMsg("\n");
    p_input = (input_thread_t *)malloc( sizeof(input_thread_t) );
    if( p_input == NULL )
Michel Kaempf's avatar
Michel Kaempf committed
115
    {
116
        intf_ErrMsg("error: %s\n", strerror(ENOMEM));
Michel Kaempf's avatar
Michel Kaempf committed
117
118
        return( NULL );
    }
119
120
121
122
123
124
125
126
127
128
129
130
131

    /* Initialize thread properties */
    p_input->b_die              = 0;
    p_input->b_error            = 0;
    p_input->pi_status          = (pi_status != NULL) ? pi_status : &i_status;
    *p_input->pi_status         = THREAD_CREATE;

    /* Initialize input method description */
    p_input->i_method           = i_method;
    p_input->psz_source         = psz_source;
    p_input->i_port             = i_port;
    p_input->i_vlan             = i_vlan;
    switch( i_method )
Michel Kaempf's avatar
Michel Kaempf committed
132
    {
133
    case INPUT_METHOD_TS_FILE:                               /* file methods */
134
135
136
137
        p_input->p_Open =   input_FileOpen;
        p_input->p_Read =   input_FileRead;
        p_input->p_Close =  input_FileClose;
        break;
138
    case INPUT_METHOD_TS_VLAN_BCAST:                  /* vlan network method */
139
140
141
142
        if( !p_main->b_vlans )
        {
            intf_ErrMsg("error: vlans are not activated\n");
            free( p_input );
143
144
            return( NULL );
        }
145
        /* ... pass through */
146
    case INPUT_METHOD_TS_UCAST:                           /* network methods */
147
148
149
150
151
152
153
154
155
    case INPUT_METHOD_TS_MCAST:
    case INPUT_METHOD_TS_BCAST:
        p_input->p_Open =   input_NetworkOpen;
        p_input->p_Read =   input_NetworkRead;
        p_input->p_Close =  input_NetworkClose;
        break;
    default:
        intf_ErrMsg("error: unknow input method\n");
        free( p_input );
156
157
        return( NULL );
        break;
Michel Kaempf's avatar
Michel Kaempf committed
158
159
    }

160
161
    /* Initialize stream description */
    for( i_index = 0; i_index < INPUT_MAX_ES; i_index++ )
Michel Kaempf's avatar
Michel Kaempf committed
162
    {
163
        p_input->p_es[i_index].i_id = EMPTY_PID;
164
        p_input->pp_selected_es[i_index] = NULL;
Michel Kaempf's avatar
Michel Kaempf committed
165
    }
166

167
168
    /* Initialize default settings for spawned decoders */
    p_input->p_aout                     = p_aout;
169
    p_input->p_vout                     = p_vout;
Michel Kaempf's avatar
Michel Kaempf committed
170

171
172
#ifdef STATS
    /* Initialize statistics */
173
    p_input->c_loops                    = 0;
174
175
176
177
    p_input->c_bytes                    = 0;
    p_input->c_payload_bytes            = 0;
    p_input->c_packets_read             = 0;
    p_input->c_packets_trashed          = 0;
Michel Kaempf's avatar
Michel Kaempf committed
178
179
#endif

180
181
    /* Initialize PSI and PCR decoders */
    if( input_PsiInit( p_input ) )
Michel Kaempf's avatar
Michel Kaempf committed
182
183
184
185
186
    {
        free( p_input );
        return( NULL );
    }

187
    if( input_PcrInit( p_input ) )
Michel Kaempf's avatar
Michel Kaempf committed
188
    {
189
        input_PsiEnd( p_input );
Michel Kaempf's avatar
Michel Kaempf committed
190
191
192
193
        free( p_input );
        return( NULL );
    }

194
195
    /* Initialize netlists */
    if( input_NetlistInit( p_input ) )
Michel Kaempf's avatar
Michel Kaempf committed
196
    {
197
198
        input_PsiEnd( p_input );
        input_PcrEnd( p_input );
Michel Kaempf's avatar
Michel Kaempf committed
199
200
201
202
        free( p_input );
        return( NULL );
    }

203
204
    intf_DbgMsg("configuration: method=%d, source=%s, port=%d, vlan=%d\n",
                i_method, psz_source, i_port, i_vlan );
Michel Kaempf's avatar
Michel Kaempf committed
205
206

    /* Let the appropriate method open the socket. */
207
    if( p_input->p_Open( p_input ) )
Michel Kaempf's avatar
Michel Kaempf committed
208
    {
209
210
211
        input_NetlistEnd( p_input );
        input_PsiEnd( p_input );
        input_PcrEnd( p_input );
Michel Kaempf's avatar
Michel Kaempf committed
212
213
214
215
216
        free( p_input );
        return( NULL );
    }

    /* Create thread and set locks. */
217
218
219
    vlc_mutex_init( &p_input->netlist.lock );
    vlc_mutex_init( &p_input->programs_lock );
    vlc_mutex_init( &p_input->es_lock );
220
    if( vlc_thread_create(&p_input->thread_id, "input", (void *) RunThread, (void *) p_input) )
Michel Kaempf's avatar
Michel Kaempf committed
221
    {
222
223
224
225
226
        intf_ErrMsg("error: %s\n", strerror(errno) );
        p_input->p_Close( p_input );
        input_NetlistEnd( p_input );;
        input_PsiEnd( p_input );
        input_PcrEnd( p_input );
Michel Kaempf's avatar
Michel Kaempf committed
227
228
229
        free( p_input );
        return( NULL );
    }
230

231
    intf_Msg("Input initialized\n");
232

233
234
235
236
    /* If status is NULL, wait until the thread is created */
    if( pi_status == NULL )
    {
        do
237
        {
238
            msleep( THREAD_SLEEP );
239
        }while( (i_status != THREAD_READY) && (i_status != THREAD_ERROR)
240
241
242
                && (i_status != THREAD_FATAL) );
        if( i_status != THREAD_READY )
        {
243
244
            return( NULL );
        }
245
    }
Michel Kaempf's avatar
Michel Kaempf committed
246
247
248
    return( p_input );
}

249
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
250
 * input_DestroyThread: mark an input thread as zombie
251
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
252
 * This function should not return until the thread is effectively cancelled.
253
 *****************************************************************************/
254
void input_DestroyThread( input_thread_t *p_input, int *pi_status )
Michel Kaempf's avatar
Michel Kaempf committed
255
{
256
    int         i_status;                                   /* thread status */
257
258
259

    /* Set status */
    p_input->pi_status = (pi_status != NULL) ? pi_status : &i_status;
260
261
    *p_input->pi_status = THREAD_DESTROY;

262
263
    /* Request thread destruction */
    p_input->b_die = 1;
Michel Kaempf's avatar
Michel Kaempf committed
264

265
266
267
268
269
270
    /* If status is NULL, wait until thread has been destroyed */
    if( pi_status == NULL )
    {
        do
        {
            msleep( THREAD_SLEEP );
271
272
        }while( (i_status != THREAD_OVER) && (i_status != THREAD_ERROR)
                && (i_status != THREAD_FATAL) );
273
    }
Michel Kaempf's avatar
Michel Kaempf committed
274
275
276
}

#if 0
277
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
278
 * input_OpenAudioStream: open an audio stream
279
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
280
281
 * This function spawns an audio decoder and plugs it on the audio output
 * thread.
282
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
283
284
int input_OpenAudioStream( input_thread_t *p_input, int i_id )
{
285
    /* XXX?? */
Michel Kaempf's avatar
Michel Kaempf committed
286
287
}

288
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
289
 * input_CloseAudioStream: close an audio stream
290
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
291
 * This function destroys an audio decoder.
292
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
293
294
void input_CloseAudioStream( input_thread_t *p_input, int i_id )
{
295
    /* XXX?? */
Michel Kaempf's avatar
Michel Kaempf committed
296
297
}

298
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
299
 * input_OpenVideoStream: open a video stream
300
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
301
 * This function spawns a video decoder and plugs it on a video output thread.
302
303
 *****************************************************************************/
int input_OpenVideoStream( input_thread_t *p_input,
Michel Kaempf's avatar
Michel Kaempf committed
304
305
                           struct vout_thread_s *p_vout, struct video_cfg_s * p_cfg )
{
306
    /* XXX?? */
Michel Kaempf's avatar
Michel Kaempf committed
307
308
}

309
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
310
 * input_CloseVideoStream: close a video stream
311
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
312
 * This function destroys an video decoder.
313
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
314
315
void input_CloseVideoStream( input_thread_t *p_input, int i_id )
{
316
    /* XXX?? */
Michel Kaempf's avatar
Michel Kaempf committed
317
318
319
320
321
}
#endif

/* following functions are local */

322
/*****************************************************************************
323
 * InitThread: initialize input thread
324
 *****************************************************************************
325
326
327
 * This function is called from RunThread and performs the second step of the
 * initialization. It returns 0 on success. Note that the thread's flag are not
 * modified inside this function.
328
 *****************************************************************************/
329
330
331
332
static int InitThread( input_thread_t *p_input )
{
    /* Mark thread as running and return */
    intf_DbgMsg("\n");
333
334
335
    *p_input->pi_status =        THREAD_READY;
    intf_DbgMsg("thread ready\n");
    return( 0 );
336
337
}

338
/*****************************************************************************
339
 * RunThread: main thread loop
340
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
341
 * Thread in charge of processing the network packets and demultiplexing.
342
 *****************************************************************************/
343
static void RunThread( input_thread_t *p_input )
Michel Kaempf's avatar
Michel Kaempf committed
344
{
345
346
    /*
     * Initialize thread and free configuration
347
348
349
350
     */
    p_input->b_error = InitThread( p_input );
    if( p_input->b_error )
    {
351
352
        free( p_input );                               /* destroy descriptor */
        return;
353
354
355
356
357
358
    }

    /*
     * Main loop
     */
    intf_DbgMsg("\n");
359
    while( !p_input->b_die && !p_input->b_error )
Michel Kaempf's avatar
Michel Kaempf committed
360
361
362
363
    {
        /* Scatter read the UDP packet from the network or the file. */
        if( (input_ReadPacket( p_input )) == (-1) )
        {
364
            /* FIXME??: Normally, a thread can't kill itself, but we don't have
Michel Kaempf's avatar
Michel Kaempf committed
365
             * any method in case of an error condition ... */
366
            p_input->b_error = 1;
Michel Kaempf's avatar
Michel Kaempf committed
367
368
        }

Christophe Massiot's avatar
Christophe Massiot committed
369
#ifdef STATS
Michel Kaempf's avatar
Michel Kaempf committed
370
371
372
373
        p_input->c_loops++;
#endif
    }

374
375
376
    /*
     * Error loop
     */
377
378
379
380
381
    if( p_input->b_error )
    {
        ErrorThread( p_input );
    }

382
    /* End of thread */
383
    EndThread( p_input );
384
    intf_DbgMsg("thread end\n");
Michel Kaempf's avatar
Michel Kaempf committed
385
386
}

387

388
/*****************************************************************************
389
 * ErrorThread: RunThread() error loop
390
391
392
 *****************************************************************************
 * This function is called when an error occured during thread main's loop.
 *****************************************************************************/
393
394
static void ErrorThread( input_thread_t *p_input )
{
395
396
    /* Wait until a `die' order */
    intf_DbgMsg("\n");
397
398
    while( !p_input->b_die )
    {
399
400
        /* Sleep a while */
        msleep( VOUT_IDLE_SLEEP );
401
402
403
    }
}

404
/*****************************************************************************
405
 * EndThread: end the input thread
406
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
407
static void EndThread( input_thread_t * p_input )
408
{
409
410
    int *       pi_status;                                  /* threas status */
    int         i_es_loop;                                       /* es index */
411
412
413

    /* Store status */
    intf_DbgMsg("\n");
414
415
    pi_status = p_input->pi_status;
    *pi_status = THREAD_END;
416

417
418
    /* Close input method */
    p_input->p_Close( p_input );
419

420
    /* Destroy all decoder threads */
421
422
    for( i_es_loop = 0;
         (i_es_loop < INPUT_MAX_ES) && (p_input->pp_selected_es[i_es_loop] != NULL) ;
423
         i_es_loop++ )
424
    {
425
        switch( p_input->pp_selected_es[i_es_loop]->i_type )
426
        {
427
428
        case MPEG1_VIDEO_ES:
        case MPEG2_VIDEO_ES:
429
#ifdef OLD_DECODER
430
            vdec_DestroyThread( (vdec_thread_t*)(p_input->pp_selected_es[i_es_loop]->p_dec) /*, NULL */ );
431
#else
432
            vpar_DestroyThread( (vpar_thread_t*)(p_input->pp_selected_es[i_es_loop]->p_dec) /*, NULL */ );
433
#endif
434
            break;
435
436
437
438
439
440
        case MPEG1_AUDIO_ES:
        case MPEG2_AUDIO_ES:
            adec_DestroyThread( (adec_thread_t*)(p_input->pp_selected_es[i_es_loop]->p_dec) );
            break;
        case AC3_AUDIO_ES:
            ac3dec_DestroyThread( (ac3dec_thread_t *)(p_input->pp_selected_es[i_es_loop]->p_dec) );
441
            break;
442
443
444
        case DVD_SPU_ES:
            spudec_DestroyThread( (spudec_thread_t *)(p_input->pp_selected_es[i_es_loop]->p_dec) );
            break;
445
446
447
        case 0:
            /* Special streams for the PSI decoder, PID 0 and 1 */
            break;
448
449
450
#ifdef DEBUG
        default:
            intf_DbgMsg("error: unknown decoder type %d\n", p_input->pp_selected_es[i_es_loop]->i_type );
451
            break;
452
#endif
453
454
455
        }
    }

456
457
458
459
    input_NetlistEnd( p_input );                            /* clean netlist */
    input_PsiEnd( p_input );                        /* clean PSI information */
    input_PcrEnd( p_input );                        /* clean PCR information */
    free( p_input );                          /* free input_thread structure */
460

461
    /* Update status */
462
    *pi_status = THREAD_OVER;
463
464
}

465
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
466
 * input_ReadPacket: reads a packet from the network or the file
467
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
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
static __inline__ int input_ReadPacket( input_thread_t *p_input )
{
    int                 i_base_index; /* index of the first free iovec */
    int                 i_current_index;
    int                 i_packet_size;
#ifdef INPUT_LIFO_TS_NETLIST
    int                 i_meanwhile_released;
    int                 i_currently_removed;
#endif
    ts_packet_t *       p_ts_packet;

    /* In this function, we only care about the TS netlist. PES netlist
     * is for the demultiplexer. */
#ifdef INPUT_LIFO_TS_NETLIST
    i_base_index = p_input->netlist.i_ts_index;

    /* Verify that we still have packets in the TS netlist */
    if( (INPUT_MAX_TS + INPUT_TS_READ_ONCE - 1 - p_input->netlist.i_ts_index) <= INPUT_TS_READ_ONCE )
    {
        intf_ErrMsg("input error: TS netlist is empty !\n");
        return( -1 );
    }

#else /* FIFO netlist */
    i_base_index = p_input->netlist.i_ts_start;
    if( p_input->netlist.i_ts_start + INPUT_TS_READ_ONCE -1 > INPUT_MAX_TS )
    {
        /* The netlist is splitted in 2 parts. We must gather them to consolidate
           the FIFO (we make the loop easily in having the same iovec at the far
           end and in the beginning of netlist_free).
           That's why the netlist is (INPUT_MAX_TS +1) + (INPUT_TS_READ_ONCE -1)
           large. */
        memcpy( p_input->netlist.p_ts_free + INPUT_MAX_TS + 1,
                p_input->netlist.p_ts_free,
                (p_input->netlist.i_ts_start + INPUT_TS_READ_ONCE - 1 - INPUT_MAX_TS)
                  * sizeof(struct iovec) );
    }

    /* Verify that we still have packets in the TS netlist */
    if( ((p_input->netlist.i_ts_end -1 - p_input->netlist.i_ts_start) & INPUT_MAX_TS) <= INPUT_TS_READ_ONCE )
    {
        intf_ErrMsg("input error: TS netlist is empty !\n");
510
        return( -1 );
Michel Kaempf's avatar
Michel Kaempf committed
511
512
513
514
    }
#endif /* FIFO netlist */

    /* Scatter read the buffer. */
515
    i_packet_size = (*p_input->p_Read)( p_input,
Michel Kaempf's avatar
Michel Kaempf committed
516
517
518
519
                           &p_input->netlist.p_ts_free[i_base_index],
                           INPUT_TS_READ_ONCE );
    if( i_packet_size == (-1) )
    {
520
521
522
523
524
525
#if 0
        intf_DbgMsg("Read packet %d %p %d %d\n", i_base_index,
                    &p_input->netlist.p_ts_free[i_base_index],
                    p_input->netlist.i_ts_start,
                    p_input->netlist.i_ts_end);
#endif
Michel Kaempf's avatar
Michel Kaempf committed
526
527
528
529
530
531
532
533
534
        intf_ErrMsg("input error: readv() failed (%s)\n", strerror(errno));
        return( -1 );
    }

    if( i_packet_size == 0 )
    {
        /* No packet has been received, so stop here. */
        return( 0 );
    }
535

Michel Kaempf's avatar
Michel Kaempf committed
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
    /* Demultiplex the TS packets (1..INPUT_TS_READ_ONCE) received. */
    for( i_current_index = i_base_index;
         (i_packet_size -= TS_PACKET_SIZE) >= 0;
         i_current_index++ )
    {
        /* BTW, something REALLY bad could happen if we receive packets with
           a wrong size. */
        p_ts_packet = (ts_packet_t*)(p_input->netlist.p_ts_free[i_current_index].iov_base);
        /* Don't cry :-), we are allowed to do that cast, because initially,
           our buffer was malloc'ed with sizeof(ts_packet_t) */

        /* Find out if we need this packet and demultiplex. */
        input_SortPacket( p_input /* for current PIDs and netlist */,
                          p_ts_packet);
    }

    if( i_packet_size > 0 )
    {
        intf_ErrMsg("input error: wrong size\n");
        return( -1 );
    }

    /* Remove the TS packets we have just filled from the netlist */
#ifdef INPUT_LIFO_TS_NETLIST
    /* We need to take a lock here while we're calculating index positions. */
561
    vlc_mutex_lock( &p_input->netlist.lock );
Michel Kaempf's avatar
Michel Kaempf committed
562
563
564
565
566
567
568
569

    i_meanwhile_released = i_base_index - p_input->netlist.i_ts_index;
    if( i_meanwhile_released )
    {
        /* That's where it becomes funny :-). Since we didn't take locks for
           efficiency reasons, other threads (including ourselves, with
           input_DemuxPacket) might have released packets to the netlist.
           So we have to copy these iovec where they should go.
570

Michel Kaempf's avatar
Michel Kaempf committed
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
           BTW, that explains why the TS netlist is
           (INPUT_MAX_TS +1) + (TS_READ_ONCE -1) large. */

        i_currently_removed = i_current_index - i_base_index;
        if( i_meanwhile_released < i_currently_removed )
        {
            /* Copy all iovecs in that case */
            memcpy( &p_input->netlist.p_ts_free[p_input->netlist.i_ts_index]
                     + i_currently_removed,
                    &p_input->netlist.p_ts_free[p_input->netlist.i_ts_index],
                    i_meanwhile_released * sizeof(struct iovec) );
        }
        else
        {
            /* We have fewer places than items, so we only move
               i_currently_removed of them. */
            memcpy( &p_input->netlist.p_ts_free[i_base_index],
                    &p_input->netlist.p_ts_free[p_input->netlist.i_ts_index],
                    i_currently_removed * sizeof(struct iovec) );
        }

        /* Update i_netlist_index with the information gathered above. */
        p_input->netlist.i_ts_index += i_currently_removed;
    }
    else
    {
        /* Nothing happened. */
        p_input->netlist.i_ts_index = i_current_index;
    }

601
    vlc_mutex_unlock( &p_input->netlist.lock );
Michel Kaempf's avatar
Michel Kaempf committed
602
603
604
605
606
607
608

#else /* FIFO netlist */
    /* & is modulo ; that's where we make the loop. */
    p_input->netlist.i_ts_start = i_current_index & INPUT_MAX_TS;
#endif

#ifdef STATS
609
    p_input->c_packets_read += i_current_index - i_base_index;
Michel Kaempf's avatar
Michel Kaempf committed
610
611
    p_input->c_bytes += (i_current_index - i_base_index) * TS_PACKET_SIZE;
#endif
612
    return( 0 );
Michel Kaempf's avatar
Michel Kaempf committed
613
614
}

615
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
616
 * input_SortPacket: find out whether we need that packet
617
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
static __inline__ void input_SortPacket( input_thread_t *p_input,
                                         ts_packet_t *p_ts_packet )
{
    int             i_current_pid;
    int             i_es_loop;

    /* Verify that sync_byte, error_indicator and scrambling_control are
       what we expected. */
    if( !(p_ts_packet->buffer[0] == 0x47) || (p_ts_packet->buffer[1] & 0x80) ||
        (p_ts_packet->buffer[3] & 0xc0) )
    {
        intf_DbgMsg("input debug: invalid TS header (%p)\n", p_ts_packet);
    }
    else
    {
        /* Get the PID of the packet. Note that ntohs is needed, for endianness
           purposes (see man page). */
        i_current_pid = U16_AT(&p_ts_packet->buffer[1]) & 0x1fff;

637
638
        //intf_DbgMsg("input debug: pid %d received (%p)\n",
        //            i_current_pid, p_ts_packet);
Michel Kaempf's avatar
Michel Kaempf committed
639
640

        /* Lock current ES state. */
641
        vlc_mutex_lock( &p_input->es_lock );
642

643
    /* Verify that we actually want this PID. */
Michel Kaempf's avatar
Michel Kaempf committed
644
645
646
647
648
649
650
651
652
653
654
655
        for( i_es_loop = 0; i_es_loop < INPUT_MAX_SELECTED_ES; i_es_loop++ )
        {
            if( p_input->pp_selected_es[i_es_loop] != NULL)
            {
                if( (*p_input->pp_selected_es[i_es_loop]).i_id
                     == i_current_pid )
                {
                    /* Don't need the lock anymore, since the value pointed
                       out by p_input->pp_selected_es[i_es_loop] can only be
                       modified from inside the input_thread (by the PSI
                       decoder): interface thread is only allowed to modify
                       the pp_selected_es table */
656
                    vlc_mutex_unlock( &p_input->es_lock );
Michel Kaempf's avatar
Michel Kaempf committed
657
658
659
660
661

                    /* We're interested. Pass it to the demultiplexer. */
                    input_DemuxTS( p_input, p_ts_packet,
                                   p_input->pp_selected_es[i_es_loop] );
                    return;
662
                }
Michel Kaempf's avatar
Michel Kaempf committed
663
664
665
666
667
668
669
            }
            else
            {
                /* pp_selected_es should not contain any hole. */
                break;
            }
        }
670
        vlc_mutex_unlock( &p_input->es_lock );
Michel Kaempf's avatar
Michel Kaempf committed
671
672
673
674
    }

    /* We weren't interested in receiving this packet. Give it back to the
       netlist. */
675
676
    //intf_DbgMsg("SortPacket: freeing unwanted TS %p (pid %d)\n", p_ts_packet,
    //                 U16_AT(&p_ts_packet->buffer[1]) & 0x1fff);
Michel Kaempf's avatar
Michel Kaempf committed
677
678
    input_NetlistFreeTS( p_input, p_ts_packet );
#ifdef STATS
679
    p_input->c_packets_trashed++;
Michel Kaempf's avatar
Michel Kaempf committed
680
681
682
#endif
}

683
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
684
 * input_DemuxTS: first step of demultiplexing: the TS header
685
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
686
 * Stream must also only contain PES and PSI, so PID must have been filtered
687
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
688
689
690
691
692
static __inline__ void input_DemuxTS( input_thread_t *p_input,
                                      ts_packet_t *p_ts_packet,
                                      es_descriptor_t *p_es_descriptor )
{
    int         i_dummy;
693
694
695
696
697
    boolean_t   b_adaption;                     /* Adaption field is present */
    boolean_t   b_payload;                         /* Packet carries payload */
    boolean_t   b_unit_start;          /* A PSI or a PES start in the packet */
    boolean_t   b_trash = 0;                 /* Must the packet be trashed ? */
    boolean_t   b_lost = 0;                     /* Was there a packet lost ? */
Michel Kaempf's avatar
Michel Kaempf committed
698
699
700
701
702
703
704

    ASSERT(p_input);
    ASSERT(p_ts_packet);
    ASSERT(p_es_descriptor);

#define p (p_ts_packet->buffer)

705
706
    //intf_DbgMsg("input debug: TS-demultiplexing packet %p, pid %d, number %d\n",
    //            p_ts_packet, U16_AT(&p[1]) & 0x1fff, p[3] & 0x0f);
Michel Kaempf's avatar
Michel Kaempf committed
707
708
709
710
711
712
713
714
715
716

#ifdef STATS
    p_es_descriptor->c_packets++;
    p_es_descriptor->c_bytes += TS_PACKET_SIZE;
#endif

    /* Extract flags values from TS common header. */
    b_unit_start = (p[1] & 0x40);
    b_adaption = (p[3] & 0x20);
    b_payload = (p[3] & 0x10);
717

Michel Kaempf's avatar
Michel Kaempf committed
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
    /* Extract adaption field informations if any */
    if( !b_adaption )
    {
        /* We don't have any adaptation_field, so payload start immediately
         after the 4 byte TS header */
        p_ts_packet->i_payload_start = 4;
    }
    else
    {
        /* p[4] is adaptation_field_length minus one */
        p_ts_packet->i_payload_start = 5 + p[4];

        /* The adaption field can be limited to the adaptation_field_length byte,
           so that there is nothing to do: skip this possibility */
        if( p[4] )
        {
            /* If the packet has both adaptation_field and payload, adaptation_field
Benoit Steiner's avatar
   
Benoit Steiner committed
735
               cannot be more than 182 bytes long; if there is only an
736
           adaptation_field, it must fill the next 183 bytes. */
Michel Kaempf's avatar
Michel Kaempf committed
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
            if( b_payload ? (p[4] > 182) : (p[4] != 183) )
            {
                intf_DbgMsg("input debug: invalid TS adaptation field (%p)\n",
                            p_ts_packet);
#ifdef STATS
                p_es_descriptor->c_invalid_packets++;
#endif
                b_trash = 1;
            }

            /* No we are sure that the byte containing flags is present: read it */
            else
            {
                /* discontinuity_indicator */
                if( p[5] & 0x80 )
                {
                    intf_DbgMsg("discontinuity_indicator encountered by TS demux " \
                                "(position read: %d, saved: %d)\n", p[5] & 0x80,
                                p_es_descriptor->i_continuity_counter);

                    /* If the PID carries the PCR, there will be a system time-base
                       discontinuity. We let the PCR decoder handle that. */
                    p_es_descriptor->b_discontinuity = 1;
760

Benoit Steiner's avatar
   
Benoit Steiner committed
761
                    /* There also may be a continuity_counter discontinuity:
762
               resynchronise our counter with the one of the stream */
Michel Kaempf's avatar
Michel Kaempf committed
763
764
765
766
767
768
                    p_es_descriptor->i_continuity_counter = (p[3] & 0x0f) - 1;
                }

                /* random_access_indicator */
                p_es_descriptor->b_random |= p[5] & 0x40;

Benoit Steiner's avatar
   
Benoit Steiner committed
769
                /* If this is a PCR_PID, and this TS packet contains a PCR,
770
           we pass it along to the PCR decoder. */
Michel Kaempf's avatar
Michel Kaempf committed
771
772
                if( (p_es_descriptor->b_pcr) && (p[5] & 0x10) )
                {
Benoit Steiner's avatar
   
Benoit Steiner committed
773
                    /* There should be a PCR field in the packet, check if the
774
               adaption field is long enough to carry it */
Michel Kaempf's avatar
Michel Kaempf committed
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
                    if( p[4] >= 7 )
                    {
                        /* Call the PCR decoder */
                        input_PcrDecode( p_input, p_es_descriptor, &p[6] );
                    }
                }
            }
        }
    }

    /* Check the continuity of the stream. */
    i_dummy = ((p[3] & 0x0f) - p_es_descriptor->i_continuity_counter) & 0x0f;
    if( i_dummy == 1 )
    {
        /* Everything is ok, just increase our counter */
        p_es_descriptor->i_continuity_counter++;
    }
    else
    {
        if( !b_payload && i_dummy == 0 )
        {
            /* This is a packet without payload, this is allowed by the draft
               As there is nothing interessant in this packet (except PCR that
               have already been handled), we can trash the packet. */
            intf_DbgMsg("Packet without payload received by TS demux\n");
            b_trash = 1;
        }
        else if( i_dummy <= 0 )
        {
            /* Duplicate packet: mark it as being to be trashed. */
            intf_DbgMsg("Duplicate packet received by TS demux\n");
            b_trash = 1;
        }
Benoit Steiner's avatar
   
Benoit Steiner committed
808
809
810
811
        else if( p_es_descriptor->i_continuity_counter == 0xFF )
        {
            /* This means that the packet is the first one we receive for this
               ES since the continuity counter ranges between 0 and 0x0F
812
               excepts when it has been initialized by the input: Init the
Benoit Steiner's avatar
   
Benoit Steiner committed
813
814
815
816
817
               counter to the correct value. */
            intf_DbgMsg("First packet for PID %d received by TS demux\n",
                        p_es_descriptor->i_id);
            p_es_descriptor->i_continuity_counter = (p[3] & 0x0f);
        }
Michel Kaempf's avatar
Michel Kaempf committed
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
        else
        {
            /* This can indicate that we missed a packet or that the
               continuity_counter wrapped and we received a dup packet: as we
               don't know, do as if we missed a packet to be sure to recover
               from this situation */
            intf_DbgMsg("Packet lost by TS demux: current %d, packet %d\n",
                        p_es_descriptor->i_continuity_counter & 0x0f,
                        p[3] & 0x0f);
            b_lost = 1;
            p_es_descriptor->i_continuity_counter = p[3] & 0x0f;
        }
    }

    /* Trash the packet if it has no payload or if it is bad */
    if( b_trash )
    {
        input_NetlistFreeTS( p_input, p_ts_packet );
#ifdef STATS
837
        p_input->c_packets_trashed++;
Michel Kaempf's avatar
Michel Kaempf committed
838
839
840
841
842
843
844
845
846
847
848
849
#endif
    }
    else
    {
        if( p_es_descriptor->b_psi )
        {
            /* The payload contains PSI tables */
            input_DemuxPSI( p_input, p_ts_packet, p_es_descriptor,
                            b_unit_start, b_lost );
        }
        else
        {
850
            /* The payload carries a PES stream */
Michel Kaempf's avatar
Michel Kaempf committed
851
852
853
854
855
856
857
858
859
860
861
            input_DemuxPES( p_input, p_ts_packet, p_es_descriptor,
                            b_unit_start, b_lost );
        }
    }

#undef p
}




862
863
864
/*****************************************************************************
 * input_DemuxPES:
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
865
 * Gather a PES packet and analyzes its header.
866
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
867
868
869
870
871
872
873
874
875
876
877
878
static __inline__ void input_DemuxPES( input_thread_t *p_input,
                                       ts_packet_t *p_ts_packet,
                                       es_descriptor_t *p_es_descriptor,
                                       boolean_t b_unit_start,
                                       boolean_t b_packet_lost )
{
    decoder_fifo_t *            p_fifo;
    u8                          i_pes_header_size;
    int                         i_dummy;
    pes_packet_t*               p_last_pes;
    ts_packet_t *               p_ts;
    int                         i_ts_payload_size;
879

Michel Kaempf's avatar
Michel Kaempf committed
880
881
882
883
884
885
886

#define p_pes (p_es_descriptor->p_pes_packet)

    ASSERT(p_input);
    ASSERT(p_ts_packet);
    ASSERT(p_es_descriptor);

887
    //intf_DbgMsg("PES-demultiplexing %p (%p)\n", p_ts_packet, p_pes);
Michel Kaempf's avatar
Michel Kaempf committed
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903

    /* If we lost data, discard the PES packet we are trying to reassemble
       if any and wait for the beginning of a new one in order to synchronise
       again */
    if( b_packet_lost && p_pes != NULL )
    {
        intf_DbgMsg("PES %p trashed because of packet lost\n", p_pes);
        input_NetlistFreePES( p_input, p_pes );
        p_pes = NULL;
    }

    /* If the TS packet contains the begining of a new PES packet, and if we
       were reassembling a PES packet, then the PES should be complete now,
       so parse its header and give it to the decoders */
    if( b_unit_start && p_pes != NULL )
    {
904
        //intf_DbgMsg("End of PES packet %p\n", p_pes);
Michel Kaempf's avatar
Michel Kaempf committed
905

906
        /* Parse the header. The header has a variable length, but in order
Michel Kaempf's avatar
Michel Kaempf committed
907
908
909
910
911
912
913
914
           to improve the algorithm, we will read the 14 bytes we may be
           interested in */
        p_ts = p_pes->p_first_ts;
        i_ts_payload_size = p_ts->i_payload_end - p_ts->i_payload_start;
        i_dummy = 0;

        if(i_ts_payload_size >= PES_HEADER_SIZE)
        {
915
            /* This part of the header entirely fits in the payload of
Michel Kaempf's avatar
Michel Kaempf committed
916
917
918
919
920
921
922
               the first TS packet */
            p_pes->p_pes_header = &(p_ts->buffer[p_ts->i_payload_start]);
        }
        else
        {
            /* This part of the header does not fit in the current TS packet:
               copy the part of the header we are interested in to the
Benoit Steiner's avatar
   
Benoit Steiner committed
923
               p_pes_header_save buffer. The buffer is dynamicly allocated if
924
               needed so it's time expensive but this situation almost never occur. */
Benoit Steiner's avatar
   
Benoit Steiner committed
925
            intf_DbgMsg("Code never tested encountered, WARNING ! (benny)\n");
926
927
            if( !p_pes->p_pes_header_save )
            {
928
                p_pes->p_pes_header_save = malloc(PES_HEADER_SIZE);
929
            }
Benoit Steiner's avatar
   
Benoit Steiner committed
930

Michel Kaempf's avatar
Michel Kaempf committed
931
932
933
934
935
            do
            {
                memcpy(p_pes->p_pes_header_save + i_dummy,
                       &p_ts->buffer[p_ts->i_payload_start], i_ts_payload_size);
                i_dummy += i_ts_payload_size;
936

Michel Kaempf's avatar
Michel Kaempf committed
937
938
939
940
941
942
943
944
                p_ts = p_ts->p_next_ts;
                if(!p_ts)
                {
                  /* The payload of the PES packet is shorter than the 14 bytes
                     we would read. This means that high packet lost occured
                     so the PES won't be usefull for any decoder. Moreover,
                     this should never happen so we can trash the packet and
                     exit roughly without regrets */
945
                  intf_DbgMsg("PES packet too short: trashed\n");
Michel Kaempf's avatar
Michel Kaempf committed
946
947
                  input_NetlistFreePES( p_input, p_pes );
                  p_pes = NULL;
948
                  /* Stats XXX?? */
Michel Kaempf's avatar
Michel Kaempf committed
949
950
                  return;
                }
951

Michel Kaempf's avatar
Michel Kaempf committed
952
953
954
955
956
957
958
959
960
961
962
963
964
                i_ts_payload_size = p_ts->i_payload_end - p_ts->i_payload_start;
            }
            while(i_ts_payload_size + i_dummy < PES_HEADER_SIZE);

            /* This last TS packet is partly header, partly payload, so just
               copy the header part */
            memcpy(p_pes->p_pes_header_save + i_dummy,
                   &p_ts->buffer[p_ts->i_payload_start],
                   PES_HEADER_SIZE - i_dummy);

            /* The header must be read in the buffer not in any TS packet */
           p_pes->p_pes_header = p_pes->p_pes_header_save;
        }
965

Michel Kaempf's avatar
Michel Kaempf committed
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
        /* Now we have the part of the PES header we were interested in:
           parse it */

        /* First read the 6 header bytes common to all PES packets:
           use them to test the PES validity */
        if( (p_pes->p_pes_header[0] || p_pes->p_pes_header[1] ||
            (p_pes->p_pes_header[2] != 1)) ||
                                     /* packet_start_code_prefix != 0x000001 */
            ((i_dummy = U16_AT(p_pes->p_pes_header + 4)) &&
             (i_dummy + 6 != p_pes->i_pes_size)) )
                   /* PES_packet_length is set and != total received payload */
        {
          /* Trash the packet and set p_pes to NULL to be sure the next PES
             packet will have its b_data_lost flag set */
          intf_DbgMsg("Corrupted PES packet received: trashed\n");
          input_NetlistFreePES( p_input, p_pes );
          p_pes = NULL;
983
          /* Stats XXX?? */
Michel Kaempf's avatar
Michel Kaempf committed
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
        }
        else
        {
            /* The PES packet is valid. Check its type to test if it may
               carry additional informations in a header extension */
            p_pes->i_stream_id =  p_pes->p_pes_header[3];

            switch( p_pes->i_stream_id )
            {
            case 0xBE:  /* Padding */
            case 0xBC:  /* Program stream map */
            case 0xBF:  /* Private stream 2 */
            case 0xB0:  /* ECM */
            case 0xB1:  /* EMM */
            case 0xFF:  /* Program stream directory */
            case 0xF2:  /* DSMCC stream */
            case 0xF8:  /* ITU-T H.222.1 type E stream */
                /* The payload begins immediatly after the 6 bytes header, so
                   we have finished with the parsing */
                i_pes_header_size = 6;
                break;

            default:
                /* The PES header contains at least 3 more bytes: parse them */
Michel Kaempf's avatar
Michel Kaempf committed
1008
1009
                p_pes->b_data_alignment = p_pes->p_pes_header[6] & 0x04;
                p_pes->b_has_pts = p_pes->p_pes_header[7] & 0x80;
1010
                i_pes_header_size = p_pes->p_pes_header[8] + 9;
Michel Kaempf's avatar
Michel Kaempf committed
1011

Michel Kaempf's avatar
Michel Kaempf committed
1012
1013
1014
1015
                /* Now parse the optional header extensions (in the limit of
                   the 14 bytes */
                if( p_pes->b_has_pts )
                {
Michel Kaempf's avatar
Michel Kaempf committed
1016
                    pcr_descriptor_t * p_pcr;
1017
1018

                    p_pcr = p_input->p_pcr;
1019
1020

                    p_pes->i_pts =
1021
1022
1023
1024
                        ( ((mtime_t)(p_pes->p_pes_header[9] & 0x0E) << 29) |
                          (((mtime_t)U16_AT(p_pes->p_pes_header + 10) << 14) - (1 << 14)) |
                          ((mtime_t)U16_AT(p_pes->p_pes_header + 12) >> 1) ) * 300;
                    p_pes->i_pts /= 27;
1025

1026
                    if( p_pcr->i_synchro_state )
1027
                    {
1028
1029
1030
1031
1032
1033
1034
1035
                        switch( p_pcr->i_synchro_state )
                        {
                            case SYNCHRO_NOT_STARTED:
                                p_pes->b_has_pts = 0;
                                break;

                            case SYNCHRO_START:
                                p_pes->i_pts += p_pcr->delta_pcr;
1036
                                p_pcr->delta_absolute = mdate() - p_pes->i_pts + INPUT_PTS_DELAY;
1037
1038
1039
1040
1041
1042
1043
1044
1045
                                p_pes->i_pts += p_pcr->delta_absolute;
                                p_pcr->i_synchro_state = 0;
                                break;

                            case SYNCHRO_REINIT: /* We skip a PES */
                                p_pes->b_has_pts = 0;
                                p_pcr->i_synchro_state = SYNCHRO_START;
                                break;
                        }
1046
1047
1048
                    }
                    else
                    {
1049
                        p_pes->i_pts += p_pcr->delta_pcr + p_pcr->delta_absolute;
1050
                    }
Michel Kaempf's avatar
Michel Kaempf committed
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
                }
                break;
            }

            /* Now we've parsed the header, we just have to indicate in some
               specific TS packets where the PES payload begins (renumber
               i_payload_start), so that the decoders can find the beginning
               of their data right out of the box. */
            p_ts = p_pes->p_first_ts;
            i_ts_payload_size = p_ts->i_payload_end - p_ts->i_payload_start;
            while( i_pes_header_size > i_ts_payload_size )
            {
                /* These packets are entirely filled by the PES header. */
                i_pes_header_size -= i_ts_payload_size;
                p_ts->i_payload_start = p_ts->i_payload_end;
                /* Go to the next TS packet: here we won't have to test it is
                   not NULL because we trash the PES packets when packet lost
                   occurs */
                p_ts = p_ts->p_next_ts;
                i_ts_payload_size = p_ts->i_payload_end - p_ts->i_payload_start;
            }
            /* This last packet is partly header, partly payload. */
            p_ts->i_payload_start += i_pes_header_size;

1075

Michel Kaempf's avatar
Michel Kaempf committed
1076
1077
1078
1079
            /* Now we can eventually put the PES packet in the decoder's
               PES fifo */
            switch( p_es_descriptor->i_type )
            {
1080
1081
                case MPEG1_VIDEO_ES:
                case MPEG2_VIDEO_ES:
1082
#ifdef OLD_DECODER
1083
                    p_fifo = &(((vdec_thread_t*)(p_es_descriptor->p_dec))->fifo);
1084
1085
1086
#else
                    p_fifo = &(((vpar_thread_t*)(p_es_descriptor->p_dec))->fifo);
#endif
1087
1088
1089
1090
1091
1092
1093
1094
                    break;

                case MPEG1_AUDIO_ES:
                case MPEG2_AUDIO_ES:
                    p_fifo = &(((adec_thread_t*)(p_es_descriptor->p_dec))->fifo);
                    break;

                case AC3_AUDIO_ES:
Michel Lespinasse's avatar
   
Michel Lespinasse committed
1095
#if 0
1096
                    /* we skip 4 bytes at the beginning of the AC3 payload */
1097
                    p_ts->i_payload_start += 4;
Michel Lespinasse's avatar
   
Michel Lespinasse committed
1098
#endif
1099
1100
1101
                    p_fifo = &(((ac3dec_thread_t *)(p_es_descriptor->p_dec))->fifo);
                    break;

1102
1103
1104
1105
1106
1107
                case DVD_SPU_ES:
                    /* we skip 4 bytes at the beginning of the subpicture payload */
                    p_ts->i_payload_start += 4;
                    p_fifo = &(((spudec_thread_t *)(p_es_descriptor->p_dec))->fifo);
                    break;

1108
1109
1110
1111
1112
1113
                default:
                    /* This should never happen */
                    intf_DbgMsg("Unknown stream type (%d, %d): PES trashed\n",
                        p_es_descriptor->i_id, p_es_descriptor->i_type);
                    p_fifo = NULL;
                    break;
Michel Kaempf's avatar
Michel Kaempf committed
1114
1115
1116
1117
            }

            if( p_fifo != NULL )
            {
1118
                vlc_mutex_lock( &p_fifo->data_lock );
Michel Kaempf's avatar
Michel Kaempf committed
1119
1120
1121
1122
                if( DECODER_FIFO_ISFULL( *p_fifo ) )
                {
                    /* The FIFO is full !!! This should not happen. */
#ifdef STATS
1123
                    p_input->c_packets_trashed += p_pes->i_ts_packets;
Michel Kaempf's avatar
Michel Kaempf committed
1124
1125
1126
1127
1128
1129
                    p_es_descriptor->c_invalid_packets += p_pes->i_ts_packets;
#endif
                    input_NetlistFreePES( p_input, p_pes );
                    intf_DbgMsg("PES trashed - fifo full ! (%d, %d)\n",
                               p_es_descriptor->i_id, p_es_descriptor->i_type);
                }
1130
        else
Michel Kaempf's avatar
Michel Kaempf committed
1131
                {
1132
1133
                    //intf_DbgMsg("Putting %p into fifo %p/%d\n",
                    //            p_pes, p_fifo, p_fifo->i_end);
Michel Kaempf's avatar
Michel Kaempf committed
1134
1135
1136
1137
                    p_fifo->buffer[p_fifo->i_end] = p_pes;
                    DECODER_FIFO_INCEND( *p_fifo );

                    /* Warn the decoder that it's got work to do. */
1138
                    vlc_cond_signal( &p_fifo->data_wait );
Michel Kaempf's avatar
Michel Kaempf committed
1139
                }
1140
                vlc_mutex_unlock( &p_fifo->data_lock );
Michel Kaempf's avatar
Michel Kaempf committed
1141
1142
1143
1144
1145
            }
            else
            {
                intf_DbgMsg("No fifo to receive PES %p: trash\n", p_pes);
#ifdef STATS
1146
                p_input->c_packets_trashed += p_pes->i_ts_packets;
Michel Kaempf's avatar
Michel Kaempf committed
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
                p_es_descriptor->c_invalid_packets += p_pes->i_ts_packets;
#endif
                input_NetlistFreePES( p_input, p_pes );
            }
        }
    }


    /* If we are at the beginning of a new PES packet, we must fetch a new
       PES buffer to begin with the reassembly of this PES packet. This is
       also here that we can synchronise with the stream if we we lost
1158
       packets or if the decoder has just started */
Michel Kaempf's avatar
Michel Kaempf committed
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
    if( b_unit_start )
    {
        p_last_pes = p_pes;

        /* Get a new one PES from the PES netlist. */
        if( (p_pes = input_NetlistGetPES( p_input )) == (NULL) )
        {
            /* PES netlist is empty ! */
            p_input->b_error = 1;
        }
        else
        {
1171
            //intf_DbgMsg("New PES packet %p (first TS: %p)\n", p_pes, p_ts_packet);
Michel Kaempf's avatar
Michel Kaempf committed
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183

            /* Init the PES fields so that the first TS packet could be correctly
               added to the PES packet (see below) */
            p_pes->p_first_ts = p_ts_packet;
            p_pes->p_last_ts = NULL;

            /* If the last pes packet was null, this means that the synchronisation
               was lost and so warn the decoder that he will have to find a way to
               recover */
            if( !p_last_pes )
                p_pes->b_data_loss = 1;

1184
            /* Read the b_random_access flag status and then reinit it */
Michel Kaempf's avatar
Michel Kaempf committed
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
            p_pes->b_random_access = p_es_descriptor->b_random;
            p_es_descriptor->b_random = 0;
        }
    }


    /* If we are synchronised with the stream, and so if we are ready to
       receive correctly the data, add the TS packet to the current PES
       packet */
    if( p_pes != NULL )
    {
1196
        //intf_DbgMsg("Adding TS %p to PES %p\n", p_ts_packet, p_pes);
Michel Kaempf's avatar
Michel Kaempf committed
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227

        /* Size of the payload carried in the TS packet */
        i_ts_payload_size = p_ts_packet->i_payload_end -
                            p_ts_packet->i_payload_start;

        /* Update the relations between the TS packets */
        p_ts_packet->p_prev_ts = p_pes->p_last_ts;
        p_ts_packet->p_next_ts = NULL;
        if( p_pes->i_ts_packets != 0 )
        {
            /* Regarder si il serait pas plus efficace de ne creer que les liens
               precedent->suivant pour le moment, et les liens suivant->precedent
               quand le paquet est termine */
            /* Otherwise it is the first TS packet. */
            p_pes->p_last_ts->p_next_ts = p_ts_packet;
        }
        /* Now add the TS to the PES packet */
        p_pes->p_last_ts = p_ts_packet;
        p_pes->i_ts_packets++;
        p_pes->i_pes_size += i_ts_payload_size;

        /* Stats */
#ifdef STATS
        i_dummy = p_ts_packet->i_payload_end - p_ts_packet->i_payload_start;
        p_es_descriptor->c_payload_bytes += i_dummy;
#endif
    }
    else
    {
        /* Since we don't use the TS packet to build a PES packet, we don't
           need it anymore, so give it back to the netlist */
1228
        //intf_DbgMsg("Trashing TS %p: no PES being build\n", p_ts_packet);
1229
        input_NetlistFreeTS( p_input, p_ts_packet );
Michel Kaempf's avatar
Michel Kaempf committed
1230
    }
1231

Michel Kaempf's avatar
Michel Kaempf committed
1232
1233
1234
1235
1236
1237
#undef p_pes
}




1238
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
1239
 * input_DemuxPSI:
1240
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
1241
 * Notice that current ES state has been locked by input_SortPacket. (No more true,
1242
 * changed by benny - FIXME: See if it's ok, and definitely change the code ?? )
1243
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
1244
1245
1246
1247
1248
static __inline__ void input_DemuxPSI( input_thread_t *p_input,
                                       ts_packet_t *p_ts_packet,
                                       es_descriptor_t *p_es_descriptor,
                                       boolean_t b_unit_start, boolean_t b_packet_lost )
{
1249
1250
    int i_data_offset;    /* Offset of the interesting data in the TS packet */
    u16 i_data_length;                               /* Length of those data */
Benoit Steiner's avatar
   
Benoit Steiner committed
1251
    //boolean_t b_first_section; /* Was there another section in the TS packet ? */
1252

Michel Kaempf's avatar
Michel Kaempf committed
1253
1254
1255
1256
1257
1258
    ASSERT(p_input);
    ASSERT(p_ts_packet);
    ASSERT(p_es_descriptor);

#define p_psi (p_es_descriptor->p_psi_section)

1259
    //intf_DbgMsg( "input debug: PSI demultiplexing %p (%p)\n", p_ts_packet, p_input);
Michel Kaempf's avatar
Michel Kaempf committed
1260

1261
    //intf_DbgMsg( "Packet: %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x (unit start: %d)\n", p_ts_packet->buffer[p_ts_packet->i_payload_start], p_ts_packet->buffer[p_ts_packet->i_payload_start+1], p_ts_packet->buffer[p_ts_packet->i_payload_start+2], p_ts_packet->buffer[p_ts_packet->i_payload_start+3], p_ts_packet->buffer[p_ts_packet->i_payload_start+4], p_ts_packet->buffer[p_ts_packet->i_payload_start+5], p_ts_packet->buffer[p_ts_packet->i_payload_start+6], p_ts_packet->buffer[p_ts_packet->i_payload_start+7], p_ts_packet->buffer[p_ts_packet->i_payload_start+8], p_ts_packet->buffer[p_ts_packet->i_payload_start+9], p_ts_packet->buffer[p_ts_packet->i_payload_start+10], p_ts_packet->buffer[p_ts_packet->i_payload_start+11], p_ts_packet->buffer[p_ts_packet->i_payload_start+12], p_ts_packet->buffer[p_ts_packet->i_payload_start+13], p_ts_packet->buffer[p_ts_packet->i_payload_start+14], p_ts_packet->buffer[p_ts_packet->i_payload_start+15], p_ts_packet->buffer[p_ts_packet->i_payload_start+16], p_ts_packet->buffer[p_ts_packet->i_payload_start+17], p_ts_packet->buffer[p_ts_packet->i_payload_start+18], p_ts_packet->buffer[p_ts_packet->i_payload_start+19], p_ts_packet->buffer[p_ts_packet->i_payload_start+20], b_unit_start);
Michel Kaempf's avatar
Michel Kaempf committed
1262
1263


Benoit Steiner's avatar
   
Benoit Steiner committed
1264
1265
1266
1267
1268
1269
1270
1271
    /* Try to find the beginning of the payload in the packet to initialise
       the do-while loop that follows -> Compute the i_data_offset variable:
       by default, the value is set so that we won't enter in the while loop.
       It will be set to a correct value if the data are not corrupted */
    i_data_offset = TS_PACKET_SIZE;

    /* Has the reassembly of a section already began in a previous packet ? */
    if( p_psi->b_running_section )
Michel Kaempf's avatar
Michel Kaempf committed
1272
    {