demux.c 32 KB
Newer Older
Gildas Bazin's avatar
 
Gildas Bazin committed
1
/*****************************************************************************
Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
2
 * demux.c: demuxer using libavformat
Gildas Bazin's avatar
 
Gildas Bazin committed
3
 *****************************************************************************
Rémi Duraffort's avatar
Rémi Duraffort committed
4
 * Copyright (C) 2004-2009 the VideoLAN team
5
 * $Id$
Gildas Bazin's avatar
 
Gildas Bazin committed
6 7
 *
 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8
 *          Gildas Bazin <gbazin@videolan.org>
Gildas Bazin's avatar
 
Gildas Bazin 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
Antoine Cellerier's avatar
Antoine Cellerier committed
22
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
Gildas Bazin's avatar
 
Gildas Bazin 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>
Clément Stenac's avatar
Clément Stenac committed
34 35
#include <vlc_demux.h>
#include <vlc_stream.h>
36
#include <vlc_meta.h>
37
#include <vlc_input.h>
38
#include <vlc_charset.h>
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
39
#include <vlc_avcodec.h>
Gildas Bazin's avatar
 
Gildas Bazin committed
40

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

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

49 50 51 52 53 54 55
/* Support for deprecated APIs */

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

56 57
//#define AVFORMAT_DEBUG 1

Gildas Bazin's avatar
 
Gildas Bazin committed
58
/* Version checking */
59
#if defined(HAVE_FFMPEG_AVFORMAT_H) || defined(HAVE_LIBAVFORMAT_AVFORMAT_H)
60

61
#if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(50<<8)+0) )
Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
62
#   define HAVE_AVUTIL_CODEC_ATTACHMENT 1
63 64
#endif

Gildas Bazin's avatar
 
Gildas Bazin committed
65 66 67 68 69
/*****************************************************************************
 * demux_sys_t: demux descriptor
 *****************************************************************************/
struct demux_sys_t
{
70
#if LIBAVFORMAT_VERSION_INT < ((53<<16)+(2<<8)+0)
Gildas Bazin's avatar
 
Gildas Bazin committed
71
    ByteIOContext   io;
72 73
#endif

Gildas Bazin's avatar
 
Gildas Bazin committed
74 75 76 77 78 79 80 81
    int             io_buffer_size;
    uint8_t        *io_buffer;

    AVInputFormat  *fmt;
    AVFormatContext *ic;

    int             i_tk;
    es_out_id_t     **tk;
82 83
    int64_t         *tk_pcr;
    int64_t         i_pcr;
84

85 86
    unsigned    i_ssa_order;

87 88
    int                i_attachments;
    input_attachment_t **attachments;
89 90 91

    /* Only one title with seekpoints possible atm. */
    input_title_t *p_title;
Gildas Bazin's avatar
 
Gildas Bazin committed
92 93 94 95 96 97 98 99 100
};

/*****************************************************************************
 * 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 );
101
static int64_t IOSeek( void *opaque, int64_t offset, int whence );
Gildas Bazin's avatar
 
Gildas Bazin committed
102

103
static block_t *BuildSsaFrame( const AVPacket *p_pkt, unsigned i_order );
104
static void UpdateSeekPoint( demux_t *p_demux, int64_t i_time );
105
static void ResetTime( demux_t *p_demux, int64_t i_time );
106

Gildas Bazin's avatar
 
Gildas Bazin committed
107 108 109
/*****************************************************************************
 * Open
 *****************************************************************************/
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
110
int OpenDemux( vlc_object_t *p_this )
Gildas Bazin's avatar
 
Gildas Bazin committed
111 112 113 114 115
{
    demux_t       *p_demux = (demux_t*)p_this;
    demux_sys_t   *p_sys;
    AVProbeData   pd;
    AVInputFormat *fmt;
116 117
    unsigned int  i;
    int64_t       i_start_time = -1;
118
    bool          b_can_seek;
119
    char         *psz_url;
120
    int           error;
Gildas Bazin's avatar
 
Gildas Bazin committed
121

122 123 124 125 126 127 128 129
    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 );
Gildas Bazin's avatar
 
Gildas Bazin committed
130
    /* Init Probe data */
131
    pd.filename = psz_url;
132
    if( ( pd.buf_size = stream_Peek( p_demux->s, (const uint8_t**)&pd.buf, 2048 + 213 ) ) <= 0 )
Gildas Bazin's avatar
 
Gildas Bazin committed
133
    {
134
        free( psz_url );
Gildas Bazin's avatar
 
Gildas Bazin committed
135 136 137
        msg_Warn( p_demux, "cannot peek" );
        return VLC_EGENERIC;
    }
138
    stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_can_seek );
Gildas Bazin's avatar
 
Gildas Bazin committed
139

140
    vlc_avcodec_lock();
141
    av_register_all(); /* Can be called several times */
142
    vlc_avcodec_unlock();
Gildas Bazin's avatar
 
Gildas Bazin committed
143 144 145 146 147

    /* Guess format */
    if( !( fmt = av_probe_input_format( &pd, 1 ) ) )
    {
        msg_Dbg( p_demux, "couldn't guess format" );
148
        free( psz_url );
Gildas Bazin's avatar
 
Gildas Bazin committed
149 150 151
        return VLC_EGENERIC;
    }

152
    if( !p_demux->b_force )
Gildas Bazin's avatar
 
Gildas Bazin committed
153
    {
154 155 156 157 158
        static const char ppsz_blacklist[][16] = {
            /* Don't handle MPEG unless forced */
            "mpeg", "vcd", "vob", "mpegts",
            /* libavformat's redirector won't work */
            "redir", "sdp",
159 160
            /* Don't handle subtitles format */
            "ass", "srt", "microdvd",
161 162 163 164 165 166 167 168 169 170 171
            ""
        };

        for( int i = 0; *ppsz_blacklist[i]; i++ )
        {
            if( !strcmp( fmt->name, ppsz_blacklist[i] ) )
            {
                free( psz_url );
                return VLC_EGENERIC;
            }
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
172 173
    }

174 175 176 177 178
    /* Don't trigger false alarms on bin files */
    if( !p_demux->b_force && !strcmp( fmt->name, "psxstr" ) )
    {
        int i_len;

179 180 181 182 183
        if( !p_demux->psz_file )
        {
            free( psz_url );
            return VLC_EGENERIC;
        }
184

185
        i_len = strlen( p_demux->psz_file );
186 187 188 189 190
        if( i_len < 4 )
        {
            free( psz_url );
            return VLC_EGENERIC;
        }
191

192 193 194
        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" ) )
195
        {
196
            free( psz_url );
197 198 199 200
            return VLC_EGENERIC;
        }
    }

201 202
    msg_Dbg( p_demux, "detected format: %s", fmt->name );

Gildas Bazin's avatar
 
Gildas Bazin committed
203 204 205 206
    /* 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 ) );
207
    p_sys->ic = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
208 209 210
    p_sys->fmt = fmt;
    p_sys->i_tk = 0;
    p_sys->tk = NULL;
211
    p_sys->tk_pcr = NULL;
212
    p_sys->i_ssa_order = 0;
213
    TAB_INIT( p_sys->i_attachments, p_sys->attachments);
214
    p_sys->p_title = NULL;
Gildas Bazin's avatar
 
Gildas Bazin committed
215 216 217 218

    /* Create I/O wrapper */
    p_sys->io_buffer_size = 32768;  /* FIXME */
    p_sys->io_buffer = malloc( p_sys->io_buffer_size );
219

220
#if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(2<<8)+0)
221 222
    p_sys->ic = avformat_alloc_context();
    p_sys->ic->pb = avio_alloc_context( p_sys->io_buffer,
223
        p_sys->io_buffer_size, 0, p_demux, IORead, NULL, IOSeek );
224
    p_sys->ic->pb->seekable = b_can_seek ? AVIO_SEEKABLE_NORMAL : 0;
225 226 227 228 229 230 231 232 233 234
    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
235

236 237
    free( psz_url );
    if( error < 0 )
Gildas Bazin's avatar
 
Gildas Bazin committed
238
    {
239 240
        errno = AVUNERROR(error);
        msg_Err( p_demux, "Could not open %s: %m", psz_url );
241
        p_sys->ic = NULL;
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
242
        CloseDemux( p_this );
Gildas Bazin's avatar
 
Gildas Bazin committed
243 244 245
        return VLC_EGENERIC;
    }

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
246
    vlc_avcodec_lock(); /* avformat calls avcodec behind our back!!! */
247
#if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(26<<8)+0)
248 249 250 251 252
    error = avformat_find_stream_info( p_sys->ic, NULL /* options */ );
#else
    error = av_find_stream_info( p_sys->ic );
#endif
    if( error < 0 )
Gildas Bazin's avatar
 
Gildas Bazin committed
253
    {
254 255
        errno = AVUNERROR(error);
        msg_Warn( p_demux, "Could not find stream info: %m" );
Gildas Bazin's avatar
 
Gildas Bazin committed
256
    }
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
257
    vlc_avcodec_unlock();
Gildas Bazin's avatar
 
Gildas Bazin committed
258 259 260

    for( i = 0; i < p_sys->ic->nb_streams; i++ )
    {
Laurent Aimar's avatar
Laurent Aimar committed
261 262 263
        AVStream *s = p_sys->ic->streams[i];
        AVCodecContext *cc = s->codec;

Gildas Bazin's avatar
 
Gildas Bazin committed
264 265 266
        es_out_id_t  *es;
        es_format_t  fmt;
        vlc_fourcc_t fcc;
267
        const char *psz_type = "unknown";
Gildas Bazin's avatar
 
Gildas Bazin committed
268

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
269
        if( !GetVlcFourcc( cc->codec_id, NULL, &fcc, NULL ) )
Gildas Bazin's avatar
 
Gildas Bazin committed
270 271 272 273
            fcc = VLC_FOURCC( 'u', 'n', 'd', 'f' );

        switch( cc->codec_type )
        {
274
        case AVMEDIA_TYPE_AUDIO:
Gildas Bazin's avatar
 
Gildas Bazin committed
275
            es_format_Init( &fmt, AUDIO_ES, fcc );
276
            fmt.i_bitrate = cc->bit_rate;
Gildas Bazin's avatar
 
Gildas Bazin committed
277 278
            fmt.audio.i_channels = cc->channels;
            fmt.audio.i_rate = cc->sample_rate;
Alexis Ballier's avatar
Alexis Ballier committed
279
            fmt.audio.i_bitspersample = cc->bits_per_coded_sample;
Gildas Bazin's avatar
 
Gildas Bazin committed
280
            fmt.audio.i_blockalign = cc->block_align;
281
            psz_type = "audio";
Gildas Bazin's avatar
 
Gildas Bazin committed
282
            break;
283

284
        case AVMEDIA_TYPE_VIDEO:
Gildas Bazin's avatar
 
Gildas Bazin committed
285
            es_format_Init( &fmt, VIDEO_ES, fcc );
286 287 288 289 290 291 292 293 294 295 296 297

            /* 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;
            }
298
            /* We need this for the h264 packetizer */
299 300
            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") ) )
301
                fmt.i_original_fourcc = VLC_FOURCC( 'a', 'v', 'c', '1' );
302

Gildas Bazin's avatar
 
Gildas Bazin committed
303 304
            fmt.video.i_width = cc->width;
            fmt.video.i_height = cc->height;
305
#if LIBAVCODEC_VERSION_MAJOR < 54
Gildas Bazin's avatar
 
Gildas Bazin committed
306 307 308 309 310
            if( cc->palctrl )
            {
                fmt.video.p_palette = malloc( sizeof(video_palette_t) );
                *fmt.video.p_palette = *(video_palette_t *)cc->palctrl;
            }
311 312 313
#else
# warning FIXME: implement palette transmission
#endif
314
            psz_type = "video";
315
            fmt.video.i_frame_rate = cc->time_base.den;
316
            fmt.video.i_frame_rate_base = cc->time_base.num * __MAX( cc->ticks_per_frame, 1 );
Gildas Bazin's avatar
 
Gildas Bazin committed
317
            break;
318

319
        case AVMEDIA_TYPE_SUBTITLE:
320
            es_format_Init( &fmt, SPU_ES, fcc );
321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362
            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 );
                }
            }

363
            psz_type = "subtitle";
364
            break;
365

Gildas Bazin's avatar
 
Gildas Bazin committed
366
        default:
367
            es_format_Init( &fmt, UNKNOWN_ES, 0 );
Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
368
#ifdef HAVE_AVUTIL_CODEC_ATTACHMENT
369
            if( cc->codec_type == AVMEDIA_TYPE_ATTACHMENT )
370 371
            {
                input_attachment_t *p_attachment;
372

373 374 375
                psz_type = "attachment";
                if( cc->codec_id == CODEC_ID_TTF )
                {
376
                    AVDictionaryEntry *filename = av_dict_get( s->metadata, "filename", NULL, 0 );
377 378 379 380 381 382 383 384
                    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 );
                    }
385
                }
Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
386
                else msg_Warn( p_demux, "unsupported attachment type (%u) in avformat demux", cc->codec_id );
387
            }
388
            else
389
#endif
390 391 392
            {
                if( cc->codec_type == AVMEDIA_TYPE_DATA )
                    psz_type = "data";
393

394
                msg_Warn( p_demux, "unsupported track type (%u:%u) in avformat demux", cc->codec_type, cc->codec_id );
395
            }
Derk-Jan Hartman's avatar
Derk-Jan Hartman committed
396
            break;
Gildas Bazin's avatar
 
Gildas Bazin committed
397
        }
398

399
        AVDictionaryEntry *language = av_dict_get( s->metadata, "language", NULL, 0 );
400 401 402
        if ( language && language->value )
            fmt.psz_language = strdup( language->value );

403 404
        if( s->disposition & AV_DISPOSITION_DEFAULT )
            fmt.i_priority = 1000;
405

Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
406
#ifdef HAVE_AVUTIL_CODEC_ATTACHMENT
407
        if( cc->codec_type != AVMEDIA_TYPE_ATTACHMENT )
408
#endif
409
        if( cc->codec_type != AVMEDIA_TYPE_DATA )
410
        {
411
            const bool    b_ogg = !strcmp( p_sys->fmt->name, "ogg" );
412 413 414
            const uint8_t *p_extra = cc->extradata;
            unsigned      i_extra  = cc->extradata_size;

415
            if( cc->codec_id == CODEC_ID_THEORA && b_ogg )
416 417
            {
                unsigned pi_size[3];
Pierre Ynard's avatar
Pierre Ynard committed
418
                const void *pp_data[3];
419 420 421 422 423 424
                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
425
                    pp_data[i_count] = &p_extra[2];
426 427 428 429 430 431 432 433 434 435 436 437 438
                    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;
                }
            }
439
            else if( cc->codec_id == CODEC_ID_SPEEX && b_ogg )
440
            {
Pierre Ynard's avatar
Pierre Ynard committed
441
                const uint8_t p_dummy_comment[] = {
442 443 444 445
                    0, 0, 0, 0,
                    0, 0, 0, 0,
                };
                unsigned pi_size[2];
Pierre Ynard's avatar
Pierre Ynard committed
446
                const void *pp_data[2];
447 448

                pi_size[0] = i_extra;
Pierre Ynard's avatar
Pierre Ynard committed
449
                pp_data[0] = p_extra;
450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469

                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 );
                }
            }
470 471 472 473 474 475 476 477
            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 );
478
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
479
    }
480 481
    p_sys->tk_pcr = calloc( p_sys->i_tk, sizeof(*p_sys->tk_pcr) );

482 483
    if( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE )
        i_start_time = p_sys->ic->start_time * 1000000 / AV_TIME_BASE;
Gildas Bazin's avatar
 
Gildas Bazin committed
484 485 486 487

    msg_Dbg( p_demux, "AVFormat supported stream" );
    msg_Dbg( p_demux, "    - format = %s (%s)",
             p_sys->fmt->name, p_sys->fmt->long_name );
488
    msg_Dbg( p_demux, "    - start time = %"PRId64, i_start_time );
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
489
    msg_Dbg( p_demux, "    - duration = %"PRId64,
490
             ( p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE ) ?
Gildas Bazin's avatar
 
Gildas Bazin committed
491
             p_sys->ic->duration * 1000000 / AV_TIME_BASE : -1 );
Gildas Bazin's avatar
 
Gildas Bazin committed
492

493
    if( p_sys->ic->nb_chapters > 0 )
494
    {
495
        p_sys->p_title = vlc_input_title_New();
496 497 498
        p_sys->p_title->i_length = p_sys->ic->duration * 1000000 / AV_TIME_BASE;
    }

499 500 501 502
    for( i = 0; i < p_sys->ic->nb_chapters; i++ )
    {
        seekpoint_t *s = vlc_seekpoint_New();

503
        AVDictionaryEntry *title = av_dict_get( p_sys->ic->metadata, "title", NULL, 0);
504
        if( title && title->value )
505
        {
506
            s->psz_name = strdup( title->value );
507 508 509 510 511 512 513 514 515 516
            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 );
    }

517
    ResetTime( p_demux, 0 );
Gildas Bazin's avatar
 
Gildas Bazin committed
518 519 520 521 522 523
    return VLC_SUCCESS;
}

/*****************************************************************************
 * Close
 *****************************************************************************/
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
524
void CloseDemux( vlc_object_t *p_this )
Gildas Bazin's avatar
 
Gildas Bazin committed
525 526 527 528
{
    demux_t     *p_demux = (demux_t*)p_this;
    demux_sys_t *p_sys = p_demux->p_sys;

529
    FREENULL( p_sys->tk );
530
    free( p_sys->tk_pcr );
531

532
    if( p_sys->ic )
533 534 535 536
    {
#if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(2<<8)+0)
        av_free( p_sys->ic->pb );
#endif
537
#if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(26<<8)+0)
538 539 540 541
        avformat_close_input( &p_sys->ic );
#else
        av_close_input_stream( p_sys->ic );
#endif
542
    }
543

544 545 546 547
    for( int i = 0; i < p_sys->i_attachments; i++ )
        free( p_sys->attachments[i] );
    TAB_CLEAN( p_sys->i_attachments, p_sys->attachments);

548 549 550
    if( p_sys->p_title )
        vlc_input_title_Delete( p_sys->p_title );

551
    free( p_sys->io_buffer );
Gildas Bazin's avatar
 
Gildas Bazin committed
552 553 554 555 556 557 558 559 560 561 562
    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;
Gildas Bazin's avatar
 
Gildas Bazin committed
563
    int64_t     i_start_time;
Gildas Bazin's avatar
 
Gildas Bazin committed
564 565 566 567 568 569 570 571 572 573 574

    /* Read a frame */
    if( av_read_frame( p_sys->ic, &pkt ) )
    {
        return 0;
    }
    if( pkt.stream_index < 0 || pkt.stream_index >= p_sys->i_tk )
    {
        av_free_packet( &pkt );
        return 1;
    }
575
    const AVStream *p_stream = p_sys->ic->streams[pkt.stream_index];
576 577 578 579 580 581
    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;
    }
582
    if( p_stream->codec->codec_id == CODEC_ID_SSA )
Gildas Bazin's avatar
 
Gildas Bazin committed
583
    {
584 585
        p_frame = BuildSsaFrame( &pkt, p_sys->i_ssa_order++ );
        if( !p_frame )
586 587
        {
            av_free_packet( &pkt );
588
            return 1;
589
        }
590 591 592 593
    }
    else
    {
        if( ( p_frame = block_New( p_demux, pkt.size ) ) == NULL )
594 595
        {
            av_free_packet( &pkt );
596
            return 0;
597
        }
598
        memcpy( p_frame->p_buffer, pkt.data, pkt.size );
Gildas Bazin's avatar
 
Gildas Bazin committed
599
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
600

601
    if( pkt.flags & AV_PKT_FLAG_KEY )
602 603
        p_frame->i_flags |= BLOCK_FLAG_TYPE_I;

604
    i_start_time = ( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE ) ?
605
        ( p_sys->ic->start_time * 1000000 / AV_TIME_BASE )  : 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
606

607
    p_frame->i_dts = ( pkt.dts == (int64_t)AV_NOPTS_VALUE ) ?
608
        VLC_TS_INVALID : (pkt.dts) * 1000000 *
609
        p_stream->time_base.num /
610
        p_stream->time_base.den - i_start_time + VLC_TS_0;
611
    p_frame->i_pts = ( pkt.pts == (int64_t)AV_NOPTS_VALUE ) ?
612
        VLC_TS_INVALID : (pkt.pts) * 1000000 *
613
        p_stream->time_base.num /
614
        p_stream->time_base.den - i_start_time + VLC_TS_0;
615
    if( pkt.duration > 0 && p_frame->i_length <= 0 )
616
        p_frame->i_length = pkt.duration * 1000000 *
617
            p_stream->time_base.num /
618
            p_stream->time_base.den;
Gildas Bazin's avatar
 
Gildas Bazin committed
619

620
    if( pkt.dts != AV_NOPTS_VALUE && pkt.dts == pkt.pts &&
621
        p_stream->codec->codec_type == AVMEDIA_TYPE_VIDEO )
622 623 624
    {
        /* Add here notoriously bugged file formats/samples regarding PTS */
        if( !strcmp( p_sys->fmt->name, "flv" ) )
625
            p_frame->i_pts = VLC_TS_INVALID;
626
    }
627
#ifdef AVFORMAT_DEBUG
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
628
    msg_Dbg( p_demux, "tk[%d] dts=%"PRId64" pts=%"PRId64,
Gildas Bazin's avatar
 
Gildas Bazin committed
629
             pkt.stream_index, p_frame->i_dts, p_frame->i_pts );
630
#endif
631 632
    if( p_frame->i_dts > VLC_TS_INVALID )
        p_sys->tk_pcr[pkt.stream_index] = p_frame->i_dts;
Gildas Bazin's avatar
 
Gildas Bazin committed
633

634 635 636
    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] );
Gildas Bazin's avatar
 
Gildas Bazin committed
637

638 639 640 641 642 643 644 645 646 647 648
    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 );
Gildas Bazin's avatar
 
Gildas Bazin committed
649 650 651
    }

    es_out_Send( p_demux->out, p_sys->tk[pkt.stream_index], p_frame );
652

Gildas Bazin's avatar
 
Gildas Bazin committed
653 654 655 656
    av_free_packet( &pkt );
    return 1;
}

657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678
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;
    }
}

679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698
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 );
    }
}

699 700 701 702 703 704
static block_t *BuildSsaFrame( const AVPacket *p_pkt, unsigned i_order )
{
    if( p_pkt->size <= 0 )
        return NULL;

    char buffer[256];
705
    const size_t i_buffer_size = __MIN( (int)sizeof(buffer) - 1, p_pkt->size );
706 707 708 709 710 711 712 713 714 715 716
    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;
717
    if( i_position <= 0 || (unsigned)i_position >= i_buffer_size )
718 719 720 721 722 723 724 725
        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;

    block_t *p_frame = block_heap_Alloc( p, p, strlen(p) + 1 );
    if( p_frame )
Rémi Duraffort's avatar
Rémi Duraffort committed
726
        p_frame->i_length = CLOCK_FREQ * ((h1-h0) * 3600 +
727 728 729 730 731 732
                                          (m1-m0) * 60 +
                                          (s1-s0) * 1) +
                            CLOCK_FREQ * (c1-c0) / 100;
    return p_frame;
}

Gildas Bazin's avatar
 
Gildas Bazin committed
733 734 735 736 737 738
/*****************************************************************************
 * Control:
 *****************************************************************************/
static int Control( demux_t *p_demux, int i_query, va_list args )
{
    demux_sys_t *p_sys = p_demux->p_sys;
739
    const int64_t i_start_time = p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE ? p_sys->ic->start_time : 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
740 741 742 743 744 745
    double f, *pf;
    int64_t i64, *pi64;

    switch( i_query )
    {
        case DEMUX_GET_POSITION:
746
            pf = (double*) va_arg( args, double* ); *pf = 0.0;
Gildas Bazin's avatar
 
Gildas Bazin committed
747 748 749
            i64 = stream_Size( p_demux->s );
            if( i64 > 0 )
            {
750 751
                double current = stream_Tell( p_demux->s );
                *pf = current / (double)i64;
Gildas Bazin's avatar
 
Gildas Bazin committed
752
            }
753

754
            if( (p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE) && (p_sys->i_pcr > 0) )
Gildas Bazin's avatar
 
Gildas Bazin committed
755
            {
756
                *pf = (double)p_sys->i_pcr / (double)p_sys->ic->duration;
Gildas Bazin's avatar
 
Gildas Bazin committed
757
            }
758

Gildas Bazin's avatar
 
Gildas Bazin committed
759 760 761 762
            return VLC_SUCCESS;

        case DEMUX_SET_POSITION:
            f = (double) va_arg( args, double );
763
            i64 = p_sys->ic->duration * f + i_start_time;
Gildas Bazin's avatar
 
Gildas Bazin committed
764

765
            msg_Warn( p_demux, "DEMUX_SET_POSITION: %"PRId64, i64 );
Gildas Bazin's avatar
 
Gildas Bazin committed
766

767 768 769 770 771 772 773
            /* 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);
774

775 776 777 778 779 780 781 782 783
                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 );
Gildas Bazin's avatar
 
Gildas Bazin committed
784 785 786
            }
            return VLC_SUCCESS;

787 788
        case DEMUX_GET_LENGTH:
            pi64 = (int64_t*)va_arg( args, int64_t * );
789
            if( p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE )
790 791 792
                *pi64 = p_sys->ic->duration * 1000000 / AV_TIME_BASE;
            else
                *pi64 = 0;
793 794
            return VLC_SUCCESS;

Gildas Bazin's avatar
 
Gildas Bazin committed
795 796 797 798 799 800
        case DEMUX_GET_TIME:
            pi64 = (int64_t*)va_arg( args, int64_t * );
            *pi64 = p_sys->i_pcr;
            return VLC_SUCCESS;

        case DEMUX_SET_TIME:
801
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
802
            i64 = (int64_t)va_arg( args, int64_t );
803
            i64 = i64 *AV_TIME_BASE / 1000000 + i_start_time;
Gildas Bazin's avatar
 
Gildas Bazin committed
804

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
805
            msg_Warn( p_demux, "DEMUX_SET_TIME: %"PRId64, i64 );
Gildas Bazin's avatar
 
Gildas Bazin committed
806

807
            if( av_seek_frame( p_sys->ic, -1, i64, AVSEEK_FLAG_BACKWARD ) < 0 )
Gildas Bazin's avatar
 
Gildas Bazin committed
808 809 810
            {
                return VLC_EGENERIC;
            }
811
            ResetTime( p_demux, i64 - i_start_time );
Gildas Bazin's avatar
 
Gildas Bazin committed
812
            return VLC_SUCCESS;
813
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
814

815 816 817 818 819 820 821 822
        case DEMUX_HAS_UNSUPPORTED_META:
        {
            bool *pb_bool = (bool*)va_arg( args, bool* );
            *pb_bool = true;
            return VLC_SUCCESS;
        }


823 824
        case DEMUX_GET_META:
        {
Clément Stenac's avatar
Clément Stenac committed
825
            vlc_meta_t *p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
826

827 828 829 830 831
            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 );
832 833 834

            if( title && title->value )
                vlc_meta_SetTitle( p_meta, title->value );
835 836
            if( artist && artist->value )
                vlc_meta_SetArtist( p_meta, artist->value );
837 838 839 840 841 842
            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 );
843 844 845
            return VLC_SUCCESS;
        }

846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862
        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;
        }

863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892
        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;

893 894
            i64 = p_sys->p_title->seekpoint[i_seekpoint]->i_time_offset *
                  AV_TIME_BASE / 1000000 + i_start_time;
895 896 897

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

898
            if( av_seek_frame( p_sys->ic, -1, i64, AVSEEK_FLAG_BACKWARD ) < 0 )
899 900 901
            {
                return VLC_EGENERIC;
            }
902
            ResetTime( p_demux, i64 - i_start_time );
903 904 905 906
            return VLC_SUCCESS;
        }


Gildas Bazin's avatar
 
Gildas Bazin committed
907 908 909 910 911 912 913 914 915 916
        default:
            return VLC_EGENERIC;
    }
}

/*****************************************************************************
 * I/O wrappers for libavformat
 *****************************************************************************/
static int IORead( void *opaque, uint8_t *buf, int buf_size )
{
917
    demux_t *p_demux = opaque;
918
    if( buf_size < 0 ) return -1;
919 920
    int i_ret = stream_Read( p_demux->s, buf, buf_size );
    return i_ret ? i_ret : -1;
Gildas Bazin's avatar
 
Gildas Bazin committed
921 922
}

923
static int64_t IOSeek( void *opaque, int64_t offset, int whence )
Gildas Bazin's avatar
 
Gildas Bazin committed
924
{
925
    demux_t *p_demux = opaque;
Rémi Duraffort's avatar
Rémi Duraffort committed
926
    int64_t i_absolute;
927
    int64_t i_size = stream_Size( p_demux->s );
Gildas Bazin's avatar
 
Gildas Bazin committed
928

929
#ifdef AVFORMAT_DEBUG
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
930
    msg_Warn( p_demux, "IOSeek offset: %"PRId64", whence: %i", offset, whence );
931
#endif
Gildas Bazin's avatar
 
Gildas Bazin committed
932

Gildas Bazin's avatar
 
Gildas Bazin committed
933 934
    switch( whence )
    {
935 936 937 938
#ifdef AVSEEK_SIZE
        case AVSEEK_SIZE:
            return i_size;
#endif
Gildas Bazin's avatar
 
Gildas Bazin committed
939
        case SEEK_SET:
940
            i_absolute = (int64_t)offset;
Gildas Bazin's avatar
 
Gildas Bazin committed
941 942
            break;
        case SEEK_CUR:
943
            i_absolute = stream_Tell( p_demux->s ) + (int64_t)offset;
Gildas Bazin's avatar
 
Gildas Bazin committed
944 945
            break;
        case SEEK_END:
946
            i_absolute = i_size + (int64_t)offset;
Gildas Bazin's avatar
 
Gildas Bazin committed
947 948 949 950 951
            break;
        default:
            return -1;

    }
952

953
    if( i_absolute < 0 )
954 955 956 957
    {
        msg_Dbg( p_demux, "Trying to seek before the beginning" );
        return -1;
    }
958

959
    if( i_size > 0 && i_absolute >= i_size )
Rafaël Carré's avatar
Rafaël Carré committed
960
    {
961 962
        msg_Dbg( p_demux, "Trying to seek too far : EOF?" );
        return -1;
Rafaël Carré's avatar
Rafaël Carré committed
963
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
964 965 966

    if( stream_Seek( p_demux->s, i_absolute ) )
    {
967
        msg_Warn( p_demux, "we were not allowed to seek, or EOF " );
Gildas Bazin's avatar
 
Gildas Bazin committed
968 969 970
        return -1;
    }

971
    return stream_Tell( p_demux->s );
Gildas Bazin's avatar
 
Gildas Bazin committed
972 973
}

974
#endif /* HAVE_LIBAVFORMAT_AVFORMAT_H */