demux.c 33.7 KB
Newer Older
gbazin's avatar
 
gbazin committed
1
/*****************************************************************************
Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
2
 * demux.c: demuxer using libavformat
gbazin's avatar
 
gbazin committed
3
 *****************************************************************************
ivoire's avatar
ivoire committed
4
 * Copyright (C) 2004-2009 the VideoLAN team
5
 * $Id$
gbazin's avatar
 
gbazin committed
6
7
 *
 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8
 *          Gildas Bazin <gbazin@videolan.org>
gbazin's avatar
 
gbazin committed
9
10
11
12
13
14
15
16
17
18
19
20
21
 *
 * 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
dionoea's avatar
dionoea committed
22
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
gbazin's avatar
 
gbazin committed
23
24
25
26
27
28
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/

29
30
31
32
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

33
#include <vlc_common.h>
zorglub's avatar
zorglub committed
34
35
#include <vlc_demux.h>
#include <vlc_stream.h>
36
#include <vlc_meta.h>
37
#include <vlc_input.h>
hartman's avatar
hartman committed
38
#include <vlc_charset.h>
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
39
#include <vlc_avcodec.h>
gbazin's avatar
 
gbazin committed
40

41
#include <libavformat/avformat.h>
gbazin's avatar
 
gbazin committed
42

43
#include "../../codec/avcodec/avcodec.h"
44
#include "../../codec/avcodec/chroma.h"
45
#include "../../codec/avcodec/avcommon.h"
46
#include "avformat.h"
47
#include "../xiph.h"
48
#include "../vobsub.h"
49

50
51
52
53
54
55
56
/* Support for deprecated APIs */

#if LIBAVFORMAT_VERSION_MAJOR < 54
# define AVDictionaryEntry AVMetadataTag
# define av_dict_get av_metadata_get
#endif

57
58
//#define AVFORMAT_DEBUG 1

gbazin's avatar
 
gbazin committed
59
/* Version checking */
60
#if defined(HAVE_FFMPEG_AVFORMAT_H) || defined(HAVE_LIBAVFORMAT_AVFORMAT_H)
61

62
#if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(50<<8)+0) )
Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
63
#   define HAVE_AVUTIL_CODEC_ATTACHMENT 1
64
65
#endif

gbazin's avatar
 
gbazin committed
66
67
68
69
70
/*****************************************************************************
 * demux_sys_t: demux descriptor
 *****************************************************************************/
struct demux_sys_t
{
71
#if LIBAVFORMAT_VERSION_INT < ((53<<16)+(2<<8)+0)
gbazin's avatar
 
gbazin committed
72
    ByteIOContext   io;
73
74
#endif

gbazin's avatar
 
gbazin committed
75
76
77
78
79
80
81
82
    int             io_buffer_size;
    uint8_t        *io_buffer;

    AVInputFormat  *fmt;
    AVFormatContext *ic;

    int             i_tk;
    es_out_id_t     **tk;
83
84
    int64_t         *tk_pcr;
    int64_t         i_pcr;
85

86
87
    unsigned    i_ssa_order;

88
89
    int                i_attachments;
    input_attachment_t **attachments;
hartman's avatar
hartman committed
90
91
92

    /* Only one title with seekpoints possible atm. */
    input_title_t *p_title;
gbazin's avatar
 
gbazin committed
93
94
95
96
97
98
99
100
101
};

/*****************************************************************************
 * Local prototypes
 *****************************************************************************/
static int Demux  ( demux_t *p_demux );
static int Control( demux_t *p_demux, int i_query, va_list args );

static int IORead( void *opaque, uint8_t *buf, int buf_size );
102
static int64_t IOSeek( void *opaque, int64_t offset, int whence );
gbazin's avatar
 
gbazin committed
103

104
static block_t *BuildSsaFrame( const AVPacket *p_pkt, unsigned i_order );
hartman's avatar
hartman committed
105
static void UpdateSeekPoint( demux_t *p_demux, int64_t i_time );
106
static void ResetTime( demux_t *p_demux, int64_t i_time );
hartman's avatar
hartman committed
107

gbazin's avatar
 
gbazin committed
108
109
110
/*****************************************************************************
 * Open
 *****************************************************************************/
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
111
int OpenDemux( vlc_object_t *p_this )
gbazin's avatar
 
gbazin committed
112
113
114
115
{
    demux_t       *p_demux = (demux_t*)p_this;
    demux_sys_t   *p_sys;
    AVProbeData   pd;
116
    AVInputFormat *fmt = NULL;
hartman's avatar
hartman committed
117
118
    unsigned int  i;
    int64_t       i_start_time = -1;
119
    bool          b_can_seek;
120
    char         *psz_url;
121
    int           error;
gbazin's avatar
 
gbazin committed
122

123
124
125
126
127
128
129
130
    if( p_demux->psz_file )
        psz_url = strdup( p_demux->psz_file );
    else
    {
        if( asprintf( &psz_url, "%s://%s", p_demux->psz_access, p_demux->psz_location ) == -1)
            return VLC_ENOMEM;
    }
    msg_Dbg( p_demux, "trying url: %s", psz_url );
gbazin's avatar
 
gbazin committed
131
    /* Init Probe data */
132
    pd.filename = psz_url;
133
    if( ( pd.buf_size = stream_Peek( p_demux->s, (const uint8_t**)&pd.buf, 2048 + 213 ) ) <= 0 )
gbazin's avatar
 
gbazin committed
134
    {
135
        free( psz_url );
gbazin's avatar
 
gbazin committed
136
137
138
        msg_Warn( p_demux, "cannot peek" );
        return VLC_EGENERIC;
    }
139
    stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_can_seek );
gbazin's avatar
 
gbazin committed
140

141
    vlc_init_avformat();
gbazin's avatar
 
gbazin committed
142

143
    char *psz_format = var_InheritString( p_this, "avformat-format" );
144
145
146
147
148
149
150
    if( psz_format )
    {
        if( fmt = av_find_input_format(psz_format) )
            msg_Dbg( p_demux, "forcing format: %s", fmt->name );
        free( psz_format );
    }

gbazin's avatar
 
gbazin committed
151
    /* Guess format */
152
    if( !fmt && !( fmt = av_probe_input_format( &pd, 1 ) ) )
gbazin's avatar
 
gbazin committed
153
154
    {
        msg_Dbg( p_demux, "couldn't guess format" );
155
        free( psz_url );
gbazin's avatar
 
gbazin committed
156
157
158
        return VLC_EGENERIC;
    }

159
    if( !p_demux->b_force )
gbazin's avatar
 
gbazin committed
160
    {
161
162
163
164
165
        static const char ppsz_blacklist[][16] = {
            /* Don't handle MPEG unless forced */
            "mpeg", "vcd", "vob", "mpegts",
            /* libavformat's redirector won't work */
            "redir", "sdp",
166
167
            /* Don't handle subtitles format */
            "ass", "srt", "microdvd",
168
169
170
171
172
173
174
175
176
177
178
            ""
        };

        for( int i = 0; *ppsz_blacklist[i]; i++ )
        {
            if( !strcmp( fmt->name, ppsz_blacklist[i] ) )
            {
                free( psz_url );
                return VLC_EGENERIC;
            }
        }
gbazin's avatar
 
gbazin committed
179
180
    }

181
182
183
184
185
    /* Don't trigger false alarms on bin files */
    if( !p_demux->b_force && !strcmp( fmt->name, "psxstr" ) )
    {
        int i_len;

186
187
188
189
190
        if( !p_demux->psz_file )
        {
            free( psz_url );
            return VLC_EGENERIC;
        }
191

192
        i_len = strlen( p_demux->psz_file );
193
194
195
196
197
        if( i_len < 4 )
        {
            free( psz_url );
            return VLC_EGENERIC;
        }
198

199
200
201
        if( strcasecmp( &p_demux->psz_file[i_len - 4], ".str" ) &&
            strcasecmp( &p_demux->psz_file[i_len - 4], ".xai" ) &&
            strcasecmp( &p_demux->psz_file[i_len - 3], ".xa" ) )
202
        {
203
            free( psz_url );
204
205
206
207
            return VLC_EGENERIC;
        }
    }

208
209
    msg_Dbg( p_demux, "detected format: %s", fmt->name );

gbazin's avatar
 
gbazin committed
210
211
212
213
    /* Fill p_demux fields */
    p_demux->pf_demux = Demux;
    p_demux->pf_control = Control;
    p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
214
    p_sys->ic = 0;
gbazin's avatar
 
gbazin committed
215
216
217
    p_sys->fmt = fmt;
    p_sys->i_tk = 0;
    p_sys->tk = NULL;
218
    p_sys->tk_pcr = NULL;
219
    p_sys->i_ssa_order = 0;
220
    TAB_INIT( p_sys->i_attachments, p_sys->attachments);
hartman's avatar
hartman committed
221
    p_sys->p_title = NULL;
gbazin's avatar
 
gbazin committed
222
223
224
225

    /* Create I/O wrapper */
    p_sys->io_buffer_size = 32768;  /* FIXME */
    p_sys->io_buffer = malloc( p_sys->io_buffer_size );
226

227
#if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(2<<8)+0)
228
229
    p_sys->ic = avformat_alloc_context();
    p_sys->ic->pb = avio_alloc_context( p_sys->io_buffer,
230
        p_sys->io_buffer_size, 0, p_demux, IORead, NULL, IOSeek );
231
    p_sys->ic->pb->seekable = b_can_seek ? AVIO_SEEKABLE_NORMAL : 0;
232
233
234
235
236
237
238
239
240
241
    error = avformat_open_input(&p_sys->ic, psz_url, p_sys->fmt, NULL);
#else
    init_put_byte( &p_sys->io, p_sys->io_buffer, p_sys->io_buffer_size, 0,
        p_demux, IORead, NULL, IOSeek );
    p_sys->io.is_streamed = !b_can_seek;
# if defined(AVIO_SEEKABLE_NORMAL)
    p_sys->io.seekable = !!b_can_seek;
# endif
    error = av_open_input_stream(&p_sys->ic, &p_sys->io, psz_url, p_sys->fmt, NULL);
#endif
242

243
244
    free( psz_url );
    if( error < 0 )
gbazin's avatar
 
gbazin committed
245
    {
246
247
        errno = AVUNERROR(error);
        msg_Err( p_demux, "Could not open %s: %m", psz_url );
248
        p_sys->ic = NULL;
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
249
        CloseDemux( p_this );
gbazin's avatar
 
gbazin committed
250
251
252
        return VLC_EGENERIC;
    }

253
#if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(26<<8)+0)
254
255
    char *psz_opts = var_InheritString( p_demux, "avformat-options" );
    AVDictionary *options[p_sys->ic->nb_streams];
256
257
    for (unsigned i = 0; i < p_sys->ic->nb_streams; i++)
        options[i] = NULL;
258
259
260
261
262
263
264
265
266
267
268
    if (psz_opts && *psz_opts) {
        options[0] = vlc_av_get_options(psz_opts);
        for (unsigned i = 1; i < p_sys->ic->nb_streams; i++) {
            av_dict_copy(&options[i], options[0], 0);
        }
    }
    free(psz_opts);
    vlc_avcodec_lock(); /* avformat calls avcodec behind our back!!! */
    error = avformat_find_stream_info( p_sys->ic, options );
    vlc_avcodec_unlock();
    AVDictionaryEntry *t = NULL;
Rafaël Carré's avatar
Rafaël Carré committed
269
    while ((t = av_dict_get(options[0], "", t, AV_DICT_IGNORE_SUFFIX))) {
270
271
        msg_Err( p_demux, "Unknown option \"%s\"", t->key );
    }
Rafaël Carré's avatar
Rafaël Carré committed
272
273
274
    for (unsigned i = 0; i < p_sys->ic->nb_streams; i++) {
        av_dict_free(&options[i]);
    }
275
#else
276
    vlc_avcodec_lock(); /* avformat calls avcodec behind our back!!! */
277
    error = av_find_stream_info( p_sys->ic );
278
    vlc_avcodec_unlock();
279
280
#endif

281
    if( error < 0 )
gbazin's avatar
 
gbazin committed
282
    {
283
284
        errno = AVUNERROR(error);
        msg_Warn( p_demux, "Could not find stream info: %m" );
gbazin's avatar
 
gbazin committed
285
286
287
288
    }

    for( i = 0; i < p_sys->ic->nb_streams; i++ )
    {
Laurent Aimar's avatar
Laurent Aimar committed
289
290
291
        AVStream *s = p_sys->ic->streams[i];
        AVCodecContext *cc = s->codec;

gbazin's avatar
 
gbazin committed
292
293
294
        es_out_id_t  *es;
        es_format_t  fmt;
        vlc_fourcc_t fcc;
295
        const char *psz_type = "unknown";
gbazin's avatar
 
gbazin committed
296

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
297
        if( !GetVlcFourcc( cc->codec_id, NULL, &fcc, NULL ) )
gbazin's avatar
 
gbazin committed
298
299
300
301
            fcc = VLC_FOURCC( 'u', 'n', 'd', 'f' );

        switch( cc->codec_type )
        {
302
        case AVMEDIA_TYPE_AUDIO:
gbazin's avatar
 
gbazin committed
303
            es_format_Init( &fmt, AUDIO_ES, fcc );
304
            fmt.i_bitrate = cc->bit_rate;
gbazin's avatar
   
gbazin committed
305
306
            fmt.audio.i_channels = cc->channels;
            fmt.audio.i_rate = cc->sample_rate;
aballier's avatar
aballier committed
307
            fmt.audio.i_bitspersample = cc->bits_per_coded_sample;
gbazin's avatar
   
gbazin committed
308
            fmt.audio.i_blockalign = cc->block_align;
309
            psz_type = "audio";
gbazin's avatar
 
gbazin committed
310
            break;
311

312
        case AVMEDIA_TYPE_VIDEO:
gbazin's avatar
 
gbazin committed
313
            es_format_Init( &fmt, VIDEO_ES, fcc );
314
315
316
317
318
319
320
321
322
323
324
325

            /* Special case for raw video data */
            if( cc->codec_id == CODEC_ID_RAWVIDEO )
            {
                msg_Dbg( p_demux, "raw video, pixel format: %i", cc->pix_fmt );
                if( GetVlcChroma( &fmt.video, cc->pix_fmt ) != VLC_SUCCESS)
                {
                    msg_Err( p_demux, "was unable to find a FourCC match for raw video" );
                }
                else
                    fmt.i_codec = fmt.video.i_chroma;
            }
326
            /* We need this for the h264 packetizer */
327
328
            else if( cc->codec_id == CODEC_ID_H264 && ( p_sys->fmt == av_find_input_format("flv") ||
                p_sys->fmt == av_find_input_format("matroska") || p_sys->fmt == av_find_input_format("mp4") ) )
329
                fmt.i_original_fourcc = VLC_FOURCC( 'a', 'v', 'c', '1' );
330

gbazin's avatar
   
gbazin committed
331
332
            fmt.video.i_width = cc->width;
            fmt.video.i_height = cc->height;
333
#if LIBAVCODEC_VERSION_MAJOR < 54
gbazin's avatar
   
gbazin committed
334
335
336
337
338
            if( cc->palctrl )
            {
                fmt.video.p_palette = malloc( sizeof(video_palette_t) );
                *fmt.video.p_palette = *(video_palette_t *)cc->palctrl;
            }
339
340
341
#else
# warning FIXME: implement palette transmission
#endif
342
            psz_type = "video";
343
            fmt.video.i_frame_rate = cc->time_base.den;
344
            fmt.video.i_frame_rate_base = cc->time_base.num * __MAX( cc->ticks_per_frame, 1 );
gbazin's avatar
 
gbazin committed
345
            break;
346

347
        case AVMEDIA_TYPE_SUBTITLE:
348
            es_format_Init( &fmt, SPU_ES, fcc );
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
            if( strncmp( p_sys->ic->iformat->name, "matroska", 8 ) == 0 &&
                cc->codec_id == CODEC_ID_DVD_SUBTITLE &&
                cc->extradata != NULL &&
                cc->extradata_size > 0 )
            {
                char *psz_start;
                char *psz_buf = malloc( cc->extradata_size + 1);
                if( psz_buf != NULL )
                {
                    memcpy( psz_buf, cc->extradata , cc->extradata_size );
                    psz_buf[cc->extradata_size] = '\0';

                    psz_start = strstr( psz_buf, "size:" );
                    if( psz_start &&
                        vobsub_size_parse( psz_start,
                                           &fmt.subs.spu.i_original_frame_width,
                                           &fmt.subs.spu.i_original_frame_height ) == VLC_SUCCESS )
                    {
                        msg_Dbg( p_demux, "original frame size: %dx%d",
                                 fmt.subs.spu.i_original_frame_width,
                                 fmt.subs.spu.i_original_frame_height );
                    }
                    else
                    {
                        msg_Warn( p_demux, "reading original frame size failed" );
                    }

                    psz_start = strstr( psz_buf, "palette:" );
                    if( psz_start &&
                        vobsub_palette_parse( psz_start, &fmt.subs.spu.palette[1] ) == VLC_SUCCESS )
                    {
                        fmt.subs.spu.palette[0] =  0xBeef;
                        msg_Dbg( p_demux, "vobsub palette read" );
                    }
                    else
                    {
                        msg_Warn( p_demux, "reading original palette failed" );
                    }
                    free( psz_buf );
                }
            }

391
            psz_type = "subtitle";
392
            break;
393

gbazin's avatar
 
gbazin committed
394
        default:
395
            es_format_Init( &fmt, UNKNOWN_ES, 0 );
Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
396
#ifdef HAVE_AVUTIL_CODEC_ATTACHMENT
397
            if( cc->codec_type == AVMEDIA_TYPE_ATTACHMENT )
398
399
            {
                input_attachment_t *p_attachment;
400

401
402
403
                psz_type = "attachment";
                if( cc->codec_id == CODEC_ID_TTF )
                {
404
                    AVDictionaryEntry *filename = av_dict_get( s->metadata, "filename", NULL, 0 );
405
406
407
408
409
410
411
412
                    if( filename && filename->value )
                    {
                        p_attachment = vlc_input_attachment_New(
                                filename->value, "application/x-truetype-font",
                                NULL, cc->extradata, (int)cc->extradata_size );
                        TAB_APPEND( p_sys->i_attachments, p_sys->attachments,
                                p_attachment );
                    }
413
                }
Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
414
                else msg_Warn( p_demux, "unsupported attachment type (%u) in avformat demux", cc->codec_id );
415
            }
416
            else
417
#endif
418
419
420
            {
                if( cc->codec_type == AVMEDIA_TYPE_DATA )
                    psz_type = "data";
421

422
                msg_Warn( p_demux, "unsupported track type (%u:%u) in avformat demux", cc->codec_type, cc->codec_id );
423
            }
hartman's avatar
hartman committed
424
            break;
gbazin's avatar
 
gbazin committed
425
        }
426

427
        AVDictionaryEntry *language = av_dict_get( s->metadata, "language", NULL, 0 );
428
429
430
        if ( language && language->value )
            fmt.psz_language = strdup( language->value );

431
432
        if( s->disposition & AV_DISPOSITION_DEFAULT )
            fmt.i_priority = 1000;
433

Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
434
#ifdef HAVE_AVUTIL_CODEC_ATTACHMENT
435
        if( cc->codec_type != AVMEDIA_TYPE_ATTACHMENT )
436
#endif
437
        if( cc->codec_type != AVMEDIA_TYPE_DATA )
438
        {
439
            const bool    b_ogg = !strcmp( p_sys->fmt->name, "ogg" );
440
441
442
            const uint8_t *p_extra = cc->extradata;
            unsigned      i_extra  = cc->extradata_size;

443
            if( cc->codec_id == CODEC_ID_THEORA && b_ogg )
444
445
            {
                unsigned pi_size[3];
Pierre Ynard's avatar
Pierre Ynard committed
446
                const void *pp_data[3];
447
448
449
450
451
452
                unsigned i_count;
                for( i_count = 0; i_count < 3; i_count++ )
                {
                    if( i_extra < 2 )
                        break;
                    pi_size[i_count] = GetWBE( p_extra );
Pierre Ynard's avatar
Pierre Ynard committed
453
                    pp_data[i_count] = &p_extra[2];
454
455
456
457
458
459
460
461
462
463
464
465
466
                    if( i_extra < pi_size[i_count] + 2 )
                        break;

                    p_extra += 2 + pi_size[i_count];
                    i_extra -= 2 + pi_size[i_count];
                }
                if( i_count > 0 && xiph_PackHeaders( &fmt.i_extra, &fmt.p_extra,
                                                     pi_size, pp_data, i_count ) )
                {
                    fmt.i_extra = 0;
                    fmt.p_extra = NULL;
                }
            }
467
            else if( cc->codec_id == CODEC_ID_SPEEX && b_ogg )
468
            {
Pierre Ynard's avatar
Pierre Ynard committed
469
                const uint8_t p_dummy_comment[] = {
470
471
472
473
                    0, 0, 0, 0,
                    0, 0, 0, 0,
                };
                unsigned pi_size[2];
Pierre Ynard's avatar
Pierre Ynard committed
474
                const void *pp_data[2];
475
476

                pi_size[0] = i_extra;
Pierre Ynard's avatar
Pierre Ynard committed
477
                pp_data[0] = p_extra;
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497

                pi_size[1] = sizeof(p_dummy_comment);
                pp_data[1] = p_dummy_comment;

                if( pi_size[0] > 0 && xiph_PackHeaders( &fmt.i_extra, &fmt.p_extra,
                                                        pi_size, pp_data, 2 ) )
                {
                    fmt.i_extra = 0;
                    fmt.p_extra = NULL;
                }
            }
            else if( cc->extradata_size > 0 )
            {
                fmt.p_extra = malloc( i_extra );
                if( fmt.p_extra )
                {
                    fmt.i_extra = i_extra;
                    memcpy( fmt.p_extra, p_extra, i_extra );
                }
            }
498
499
500
501
502
503
504
505
            es = es_out_Add( p_demux->out, &fmt );
            if( s->disposition & AV_DISPOSITION_DEFAULT )
                es_out_Control( p_demux->out, ES_OUT_SET_ES_DEFAULT, es );
            es_format_Clean( &fmt );

            msg_Dbg( p_demux, "adding es: %s codec = %4.4s",
                     psz_type, (char*)&fcc );
            TAB_APPEND( p_sys->i_tk, p_sys->tk, es );
506
        }
gbazin's avatar
 
gbazin committed
507
    }
508
509
    p_sys->tk_pcr = calloc( p_sys->i_tk, sizeof(*p_sys->tk_pcr) );

hartman's avatar
hartman committed
510
511
    if( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE )
        i_start_time = p_sys->ic->start_time * 1000000 / AV_TIME_BASE;
gbazin's avatar
 
gbazin committed
512
513
514
515

    msg_Dbg( p_demux, "AVFormat supported stream" );
    msg_Dbg( p_demux, "    - format = %s (%s)",
             p_sys->fmt->name, p_sys->fmt->long_name );
hartman's avatar
hartman committed
516
    msg_Dbg( p_demux, "    - start time = %"PRId64, i_start_time );
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
517
    msg_Dbg( p_demux, "    - duration = %"PRId64,
518
             ( p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE ) ?
gbazin's avatar
   
gbazin committed
519
             p_sys->ic->duration * 1000000 / AV_TIME_BASE : -1 );
gbazin's avatar
 
gbazin committed
520

521
    if( p_sys->ic->nb_chapters > 0 )
522
    {
523
        p_sys->p_title = vlc_input_title_New();
524
525
526
        p_sys->p_title->i_length = p_sys->ic->duration * 1000000 / AV_TIME_BASE;
    }

hartman's avatar
hartman committed
527
528
529
530
    for( i = 0; i < p_sys->ic->nb_chapters; i++ )
    {
        seekpoint_t *s = vlc_seekpoint_New();

531
        AVDictionaryEntry *title = av_dict_get( p_sys->ic->metadata, "title", NULL, 0);
532
        if( title && title->value )
hartman's avatar
hartman committed
533
        {
534
            s->psz_name = strdup( title->value );
hartman's avatar
hartman committed
535
536
537
538
539
540
541
542
543
544
            EnsureUTF8( s->psz_name );
            msg_Dbg( p_demux, "    - chapter %d: %s", i, s->psz_name );
        }
        s->i_time_offset = p_sys->ic->chapters[i]->start * 1000000 *
            p_sys->ic->chapters[i]->time_base.num /
            p_sys->ic->chapters[i]->time_base.den -
            (i_start_time != -1 ? i_start_time : 0 );
        TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
    }

545
    ResetTime( p_demux, 0 );
gbazin's avatar
 
gbazin committed
546
547
548
549
550
551
    return VLC_SUCCESS;
}

/*****************************************************************************
 * Close
 *****************************************************************************/
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
552
void CloseDemux( vlc_object_t *p_this )
gbazin's avatar
 
gbazin committed
553
554
555
556
{
    demux_t     *p_demux = (demux_t*)p_this;
    demux_sys_t *p_sys = p_demux->p_sys;

557
    FREENULL( p_sys->tk );
558
    free( p_sys->tk_pcr );
559

560
    if( p_sys->ic )
561
562
563
564
    {
#if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(2<<8)+0)
        av_free( p_sys->ic->pb );
#endif
565
#if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(26<<8)+0)
566
567
568
569
        avformat_close_input( &p_sys->ic );
#else
        av_close_input_stream( p_sys->ic );
#endif
570
    }
571

572
573
574
575
    for( int i = 0; i < p_sys->i_attachments; i++ )
        free( p_sys->attachments[i] );
    TAB_CLEAN( p_sys->i_attachments, p_sys->attachments);

hartman's avatar
hartman committed
576
577
578
    if( p_sys->p_title )
        vlc_input_title_Delete( p_sys->p_title );

579
    free( p_sys->io_buffer );
gbazin's avatar
 
gbazin committed
580
581
582
583
584
585
586
587
588
589
590
    free( p_sys );
}

/*****************************************************************************
 * Demux:
 *****************************************************************************/
static int Demux( demux_t *p_demux )
{
    demux_sys_t *p_sys = p_demux->p_sys;
    AVPacket    pkt;
    block_t     *p_frame;
gbazin's avatar
   
gbazin committed
591
    int64_t     i_start_time;
gbazin's avatar
 
gbazin committed
592
593

    /* Read a frame */
594
595
    int i_av_ret = av_read_frame( p_sys->ic, &pkt );
    if( i_av_ret )
gbazin's avatar
 
gbazin committed
596
    {
597
598
599
600
        /* Avoid EOF if av_read_frame returns AVERROR(EAGAIN) */
        if( i_av_ret == AVERROR(EAGAIN) )
            return 1;

gbazin's avatar
 
gbazin committed
601
602
603
604
605
606
607
        return 0;
    }
    if( pkt.stream_index < 0 || pkt.stream_index >= p_sys->i_tk )
    {
        av_free_packet( &pkt );
        return 1;
    }
608
    const AVStream *p_stream = p_sys->ic->streams[pkt.stream_index];
609
610
611
612
613
614
    if( p_stream->time_base.den <= 0 )
    {
        msg_Warn( p_demux, "Invalid time base for the stream %d", pkt.stream_index );
        av_free_packet( &pkt );
        return 1;
    }
615
    if( p_stream->codec->codec_id == CODEC_ID_SSA )
gbazin's avatar
 
gbazin committed
616
    {
617
618
        p_frame = BuildSsaFrame( &pkt, p_sys->i_ssa_order++ );
        if( !p_frame )
619
620
        {
            av_free_packet( &pkt );
621
            return 1;
622
        }
623
624
625
626
    }
    else
    {
        if( ( p_frame = block_New( p_demux, pkt.size ) ) == NULL )
627
628
        {
            av_free_packet( &pkt );
629
            return 0;
630
        }
631
        memcpy( p_frame->p_buffer, pkt.data, pkt.size );
gbazin's avatar
 
gbazin committed
632
    }
gbazin's avatar
   
gbazin committed
633

634
    if( pkt.flags & AV_PKT_FLAG_KEY )
635
636
        p_frame->i_flags |= BLOCK_FLAG_TYPE_I;

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
    /* Used to avoid timestamps overlow */
    lldiv_t q;
    if( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE )
    {
        q = lldiv( p_sys->ic->start_time, AV_TIME_BASE);
        i_start_time = q.quot * (int64_t)1000000 + q.rem * (int64_t)1000000 / AV_TIME_BASE;
    }
    else
        i_start_time = 0;

    if( pkt.dts == (int64_t)AV_NOPTS_VALUE )
        p_frame->i_dts = VLC_TS_INVALID;
    else
    {
        q = lldiv( pkt.dts, p_stream->time_base.den );
        p_frame->i_dts = q.quot * (int64_t)1000000 *
            p_stream->time_base.num + q.rem * (int64_t)1000000 *
            p_stream->time_base.num /
            p_stream->time_base.den - i_start_time + VLC_TS_0;
    }

    if( pkt.pts == (int64_t)AV_NOPTS_VALUE )
        p_frame->i_pts = VLC_TS_INVALID;
    else
    {
        q = lldiv( pkt.pts, p_stream->time_base.den );
        p_frame->i_pts = q.quot * (int64_t)1000000 *
            p_stream->time_base.num + q.rem * (int64_t)1000000 *
            p_stream->time_base.num /
            p_stream->time_base.den - i_start_time + VLC_TS_0;
    }
668
    if( pkt.duration > 0 && p_frame->i_length <= 0 )
669
        p_frame->i_length = pkt.duration * 1000000 *
670
            p_stream->time_base.num /
671
            p_stream->time_base.den;
gbazin's avatar
   
gbazin committed
672

673
    if( pkt.dts != AV_NOPTS_VALUE && pkt.dts == pkt.pts &&
674
        p_stream->codec->codec_type == AVMEDIA_TYPE_VIDEO )
675
676
677
    {
        /* Add here notoriously bugged file formats/samples regarding PTS */
        if( !strcmp( p_sys->fmt->name, "flv" ) )
678
            p_frame->i_pts = VLC_TS_INVALID;
679
    }
680
#ifdef AVFORMAT_DEBUG
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
681
    msg_Dbg( p_demux, "tk[%d] dts=%"PRId64" pts=%"PRId64,
gbazin's avatar
 
gbazin committed
682
             pkt.stream_index, p_frame->i_dts, p_frame->i_pts );
683
#endif
684
685
    if( p_frame->i_dts > VLC_TS_INVALID )
        p_sys->tk_pcr[pkt.stream_index] = p_frame->i_dts;
gbazin's avatar
 
gbazin committed
686

687
688
689
    int64_t i_ts_max = INT64_MIN;
    for( int i = 0; i < p_sys->i_tk; i++ )
        i_ts_max = __MAX( i_ts_max, p_sys->tk_pcr[i] );
gbazin's avatar
 
gbazin committed
690

691
692
693
694
695
696
697
698
699
700
701
    int64_t i_ts_min = INT64_MAX;
    for( int i = 0; i < p_sys->i_tk; i++ )
    {
        if( p_sys->tk_pcr[i] > VLC_TS_INVALID && p_sys->tk_pcr[i] + 10 * CLOCK_FREQ >= i_ts_max )
            i_ts_min = __MIN( i_ts_min, p_sys->tk_pcr[i] );
    }
    if( i_ts_min >= p_sys->i_pcr )
    {
        p_sys->i_pcr = i_ts_min;
        es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr );
        UpdateSeekPoint( p_demux, p_sys->i_pcr );
gbazin's avatar
 
gbazin committed
702
703
704
    }

    es_out_Send( p_demux->out, p_sys->tk[pkt.stream_index], p_frame );
hartman's avatar
hartman committed
705

gbazin's avatar
 
gbazin committed
706
707
708
709
    av_free_packet( &pkt );
    return 1;
}

hartman's avatar
hartman committed
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
static void UpdateSeekPoint( demux_t *p_demux, int64_t i_time )
{
    demux_sys_t *p_sys = p_demux->p_sys;
    int i;

    if( !p_sys->p_title )
        return;

    for( i = 0; i < p_sys->p_title->i_seekpoint; i++ )
    {
        if( i_time < p_sys->p_title->seekpoint[i]->i_time_offset )
            break;
    }
    i--;

    if( i != p_demux->info.i_seekpoint && i >= 0 )
    {
        p_demux->info.i_seekpoint = i;
        p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
    }
}

732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
static void ResetTime( demux_t *p_demux, int64_t i_time )
{
    demux_sys_t *p_sys = p_demux->p_sys;

    if( p_sys->ic->start_time == (int64_t)AV_NOPTS_VALUE || i_time < 0 )
        i_time = VLC_TS_INVALID;
    else if( i_time == 0 )
        i_time = 1;

    p_sys->i_pcr = i_time;
    for( int i = 0; i < p_sys->i_tk; i++ )
        p_sys->tk_pcr[i] = i_time;

    if( i_time > VLC_TS_INVALID )
    {
        es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_time );
        UpdateSeekPoint( p_demux, i_time );
    }
}

752
753
754
755
756
757
static block_t *BuildSsaFrame( const AVPacket *p_pkt, unsigned i_order )
{
    if( p_pkt->size <= 0 )
        return NULL;

    char buffer[256];
758
    const size_t i_buffer_size = __MIN( (int)sizeof(buffer) - 1, p_pkt->size );
759
760
761
762
763
764
765
766
767
768
769
    memcpy( buffer, p_pkt->data, i_buffer_size );
    buffer[i_buffer_size] = '\0';

    /* */
    int i_layer;
    int h0, m0, s0, c0;
    int h1, m1, s1, c1;
    int i_position = 0;
    if( sscanf( buffer, "Dialogue: %d,%d:%d:%d.%d,%d:%d:%d.%d,%n", &i_layer,
                &h0, &m0, &s0, &c0, &h1, &m1, &s1, &c1, &i_position ) < 9 )
        return NULL;
770
    if( i_position <= 0 || (unsigned)i_position >= i_buffer_size )
771
772
773
774
775
776
        return NULL;

    char *p;
    if( asprintf( &p, "%u,%d,%.*s", i_order, i_layer, p_pkt->size - i_position, p_pkt->data + i_position ) < 0 )
        return NULL;

777
    block_t *p_frame = block_heap_Alloc( p, strlen(p) + 1 );
778
    if( p_frame )
ivoire's avatar
ivoire committed
779
        p_frame->i_length = CLOCK_FREQ * ((h1-h0) * 3600 +
780
781
782
783
784
785
                                          (m1-m0) * 60 +
                                          (s1-s0) * 1) +
                            CLOCK_FREQ * (c1-c0) / 100;
    return p_frame;
}

gbazin's avatar
 
gbazin committed
786
787
788
789
790
791
/*****************************************************************************
 * Control:
 *****************************************************************************/
static int Control( demux_t *p_demux, int i_query, va_list args )
{
    demux_sys_t *p_sys = p_demux->p_sys;
792
    const int64_t i_start_time = p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE ? p_sys->ic->start_time : 0;
gbazin's avatar
 
gbazin committed
793
794
795
796
797
798
    double f, *pf;
    int64_t i64, *pi64;

    switch( i_query )
    {
        case DEMUX_GET_POSITION:
799
            pf = (double*) va_arg( args, double* ); *pf = 0.0;
gbazin's avatar
 
gbazin committed
800
801
802
            i64 = stream_Size( p_demux->s );
            if( i64 > 0 )
            {
803
804
                double current = stream_Tell( p_demux->s );
                *pf = current / (double)i64;
gbazin's avatar
 
gbazin committed
805
            }
806

807
            if( (p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE) && (p_sys->i_pcr > 0) )
gbazin's avatar
 
gbazin committed
808
            {
809
                *pf = (double)p_sys->i_pcr / (double)p_sys->ic->duration;
gbazin's avatar
 
gbazin committed
810
            }
811

gbazin's avatar
 
gbazin committed
812
813
814
815
            return VLC_SUCCESS;

        case DEMUX_SET_POSITION:
            f = (double) va_arg( args, double );
816
            i64 = p_sys->ic->duration * f + i_start_time;
gbazin's avatar
   
gbazin committed
817

818
            msg_Warn( p_demux, "DEMUX_SET_POSITION: %"PRId64, i64 );
gbazin's avatar
   
gbazin committed
819

820
821
822
823
824
825
826
            /* If we have a duration, we prefer to seek by time
               but if we don't, or if the seek fails, try BYTE seeking */
            if( p_sys->ic->duration == (int64_t)AV_NOPTS_VALUE ||
                (av_seek_frame( p_sys->ic, -1, i64, AVSEEK_FLAG_BACKWARD ) < 0) )
            {
                int64_t i_size = stream_Size( p_demux->s );
                i64 = (i_size * f);
827

828
829
830
831
832
833
834
835
836
                msg_Warn( p_demux, "DEMUX_SET_BYTE_POSITION: %"PRId64, i64 );
                if( av_seek_frame( p_sys->ic, -1, i64, AVSEEK_FLAG_BYTE ) < 0 )
                    return VLC_EGENERIC;

                ResetTime( p_demux, -1 );
            }
            else
            {
                ResetTime( p_demux, i64 - i_start_time );
gbazin's avatar
 
gbazin committed
837
838
839
            }
            return VLC_SUCCESS;

840
841
        case DEMUX_GET_LENGTH:
            pi64 = (int64_t*)va_arg( args, int64_t * );
842
            if( p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE )
843
844
845
                *pi64 = p_sys->ic->duration * 1000000 / AV_TIME_BASE;
            else
                *pi64 = 0;
846
847
            return VLC_SUCCESS;

gbazin's avatar
 
gbazin committed
848
849
850
851
852
853
        case DEMUX_GET_TIME:
            pi64 = (int64_t*)va_arg( args, int64_t * );
            *pi64 = p_sys->i_pcr;
            return VLC_SUCCESS;

        case DEMUX_SET_TIME:
854
        {
gbazin's avatar
 
gbazin committed
855
            i64 = (int64_t)va_arg( args, int64_t );
856
            i64 = i64 *AV_TIME_BASE / 1000000 + i_start_time;
gbazin's avatar
   
gbazin committed
857

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
858
            msg_Warn( p_demux, "DEMUX_SET_TIME: %"PRId64, i64 );
gbazin's avatar
   
gbazin committed
859

860
            if( av_seek_frame( p_sys->ic, -1, i64, AVSEEK_FLAG_BACKWARD ) < 0 )
gbazin's avatar
 
gbazin committed
861
862
863
            {
                return VLC_EGENERIC;
            }
864
            ResetTime( p_demux, i64 - i_start_time );
gbazin's avatar
 
gbazin committed
865
            return VLC_SUCCESS;
866
        }
gbazin's avatar
 
gbazin committed
867

868
869
870
871
872
873
874
875
        case DEMUX_HAS_UNSUPPORTED_META:
        {
            bool *pb_bool = (bool*)va_arg( args, bool* );
            *pb_bool = true;
            return VLC_SUCCESS;
        }


876
877
        case DEMUX_GET_META:
        {
zorglub's avatar
zorglub committed
878
            vlc_meta_t *p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
879

880
881
882
883
884
            AVDictionaryEntry *title = av_dict_get( p_sys->ic->metadata, "language", NULL, 0 );
            AVDictionaryEntry *artist = av_dict_get( p_sys->ic->metadata, "artist", NULL, 0 );
            AVDictionaryEntry *copyright = av_dict_get( p_sys->ic->metadata, "copyright", NULL, 0 );
            AVDictionaryEntry *comment = av_dict_get( p_sys->ic->metadata, "comment", NULL, 0 );
            AVDictionaryEntry *genre = av_dict_get( p_sys->ic->metadata, "genre", NULL, 0 );
885
886
887

            if( title && title->value )
                vlc_meta_SetTitle( p_meta, title->value );
888
889
            if( artist && artist->value )
                vlc_meta_SetArtist( p_meta, artist->value );
890
891
892
893
894
895
            if( copyright && copyright->value )
                vlc_meta_SetCopyright( p_meta, copyright->value );
            if( comment && comment->value )
                vlc_meta_SetDescription( p_meta, comment->value );
            if( genre && genre->value )
                vlc_meta_SetGenre( p_meta, genre->value );
896
897
898
            return VLC_SUCCESS;
        }

899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
        case DEMUX_GET_ATTACHMENTS:
        {
            input_attachment_t ***ppp_attach =
                (input_attachment_t***)va_arg( args, input_attachment_t*** );
            int *pi_int = (int*)va_arg( args, int * );
            int i;

            if( p_sys->i_attachments <= 0 )
                return VLC_EGENERIC;

            *pi_int = p_sys->i_attachments;;
            *ppp_attach = malloc( sizeof(input_attachment_t**) * p_sys->i_attachments );
            for( i = 0; i < p_sys->i_attachments; i++ )
                (*ppp_attach)[i] = vlc_input_attachment_Duplicate( p_sys->attachments[i] );
            return VLC_SUCCESS;
        }

hartman's avatar
hartman committed
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
        case DEMUX_GET_TITLE_INFO:
        {
            input_title_t ***ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
            int *pi_int    = (int*)va_arg( args, int* );
            int *pi_title_offset = (int*)va_arg( args, int* );
            int *pi_seekpoint_offset = (int*)va_arg( args, int* );

            if( !p_sys->p_title )
                return VLC_EGENERIC;

            *pi_int = 1;
            *ppp_title = malloc( sizeof( input_title_t**) );
            (*ppp_title)[0] = vlc_input_title_Duplicate( p_sys->p_title );
            *pi_title_offset = 0;
            *pi_seekpoint_offset = 0;
            return VLC_SUCCESS;
        }
        case DEMUX_SET_TITLE:
        {
            const int i_title = (int)va_arg( args, int );
            if( !p_sys->p_title || i_title != 0 )
                return VLC_EGENERIC;
            return VLC_SUCCESS;
        }
        case DEMUX_SET_SEEKPOINT:
        {
            const int i_seekpoint = (int)va_arg( args, int );
            if( !p_sys->p_title )
                return VLC_EGENERIC;

946
947
            i64 = p_sys->p_title->seekpoint[i_seekpoint]->i_time_offset *
                  AV_TIME_BASE / 1000000 + i_start_time;
hartman's avatar
hartman committed
948
949
950

            msg_Warn( p_demux, "DEMUX_SET_TIME: %"PRId64, i64 );

951
            if( av_seek_frame( p_sys->ic, -1, i64, AVSEEK_FLAG_BACKWARD ) < 0 )
hartman's avatar
hartman committed
952
953
954
            {
                return VLC_EGENERIC;
            }
955
            ResetTime( p_demux, i64 - i_start_time );
hartman's avatar
hartman committed
956
957
958
959
            return VLC_SUCCESS;
        }


gbazin's avatar
 
gbazin committed
960
961
962
963
964
965
966
967
968
969
        default:
            return VLC_EGENERIC;
    }
}

/*****************************************************************************
 * I/O wrappers for libavformat
 *****************************************************************************/
static int IORead( void *opaque, uint8_t *buf, int buf_size )
{
970
    demux_t *p_demux = opaque;
971
    if( buf_size < 0 ) return -1;
972
973
    int i_ret = stream_Read( p_demux->s, buf, buf_size );
    return i_ret ? i_ret : -1;
gbazin's avatar
 
gbazin committed
974
975
}

976
static int64_t IOSeek( void *opaque, int64_t offset, int whence )
gbazin's avatar
 
gbazin committed
977
{
978
    demux_t *p_demux = opaque;
ivoire's avatar
ivoire committed
979
    int64_t i_absolute;
980
    int64_t i_size = stream_Size( p_demux->s );
gbazin's avatar
 
gbazin committed
981

982
#ifdef AVFORMAT_DEBUG
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
983
    msg_Warn( p_demux, "IOSeek offset: %"PRId64", whence: %i", offset, whence );
984
#endif
gbazin's avatar
   
gbazin committed
985

gbazin's avatar
 
gbazin committed
986
987
    switch( whence )
    {
988
989
990
991
#ifdef AVSEEK_SIZE
        case AVSEEK_SIZE:
            return i_size;
#endif
gbazin's avatar
 
gbazin committed
992
        case SEEK_SET:
hartman's avatar
hartman committed
993
            i_absolute = (int64_t)offset;
gbazin's avatar
 
gbazin committed
994
995
            break;
        case SEEK_CUR:
hartman's avatar
hartman committed
996
            i_absolute = stream_Tell( p_demux->s ) + (int64_t)offset;
gbazin's avatar
 
gbazin committed
997
998
            break;
        case SEEK_END:
hartman's avatar
hartman committed
999
            i_absolute = i_size + (int64_t)offset;
gbazin's avatar
 
gbazin committed
1000
            break;
For faster browsing, not all history is shown. View entire blame