demux.c 28.6 KB
Newer Older
Gildas Bazin's avatar
 
Gildas Bazin committed
1 2 3
/*****************************************************************************
 * demux.c: demuxer using ffmpeg (libavformat).
 *****************************************************************************
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

/* ffmpeg header */
42 43 44
#if defined(HAVE_LIBAVFORMAT_AVFORMAT_H)
#   include <libavformat/avformat.h>
#elif defined(HAVE_FFMPEG_AVFORMAT_H)
45
#   include <ffmpeg/avformat.h>
Gildas Bazin's avatar
 
Gildas Bazin committed
46 47
#endif

48
#include "../../codec/avcodec/avcodec.h"
49
#include "avformat.h"
50
#include "../xiph.h"
51
#include "../vobsub.h"
52

53 54
//#define AVFORMAT_DEBUG 1

Gildas Bazin's avatar
 
Gildas Bazin committed
55
/* Version checking */
56
#if defined(HAVE_FFMPEG_AVFORMAT_H) || defined(HAVE_LIBAVFORMAT_AVFORMAT_H)
57

58 59 60 61
#if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(50<<8)+0) )
#   define HAVE_FFMPEG_CODEC_ATTACHMENT 1
#endif

62 63 64 65
#if (LIBAVFORMAT_VERSION_INT >= ((52<<16)+(15<<8)+0) )
#   define HAVE_FFMPEG_CHAPTERS 1
#endif

Gildas Bazin's avatar
 
Gildas Bazin committed
66 67 68 69 70 71 72 73 74 75 76
/*****************************************************************************
 * demux_sys_t: demux descriptor
 *****************************************************************************/
struct demux_sys_t
{
    ByteIOContext   io;
    int             io_buffer_size;
    uint8_t        *io_buffer;

    AVInputFormat  *fmt;
    AVFormatContext *ic;
Gildas Bazin's avatar
 
Gildas Bazin committed
77 78
    URLContext     url;
    URLProtocol    prot;
Gildas Bazin's avatar
 
Gildas Bazin committed
79 80 81 82 83 84 85

    int             i_tk;
    es_out_id_t     **tk;

    int64_t     i_pcr;
    int64_t     i_pcr_inc;
    int         i_pcr_tk;
86

87 88
    unsigned    i_ssa_order;

89 90
    int                i_attachments;
    input_attachment_t **attachments;
91 92 93

    /* Only one title with seekpoints possible atm. */
    input_title_t *p_title;
Gildas Bazin's avatar
 
Gildas Bazin committed
94 95 96 97 98 99 100 101 102
};

/*****************************************************************************
 * 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 );
103
static int64_t IOSeek( void *opaque, int64_t offset, int whence );
Gildas Bazin's avatar
 
Gildas Bazin committed
104

105
static block_t *BuildSsaFrame( const AVPacket *p_pkt, unsigned i_order );
106 107
static void UpdateSeekPoint( demux_t *p_demux, int64_t i_time );

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

    /* Init Probe data */
    pd.filename = p_demux->psz_path;
122
    if( ( pd.buf_size = stream_Peek( p_demux->s, &pd.buf, 2048 + 213 ) ) <= 0 )
Gildas Bazin's avatar
 
Gildas Bazin committed
123 124 125 126 127
    {
        msg_Warn( p_demux, "cannot peek" );
        return VLC_EGENERIC;
    }

128
    vlc_avcodec_lock();
129
    av_register_all(); /* Can be called several times */
130
    vlc_avcodec_unlock();
Gildas Bazin's avatar
 
Gildas Bazin committed
131 132 133 134 135 136 137 138 139

    /* Guess format */
    if( !( fmt = av_probe_input_format( &pd, 1 ) ) )
    {
        msg_Dbg( p_demux, "couldn't guess format" );
        return VLC_EGENERIC;
    }

    /* Don't try to handle MPEG unless forced */
140
    if( !p_demux->b_force &&
Gildas Bazin's avatar
 
Gildas Bazin committed
141 142 143
        ( !strcmp( fmt->name, "mpeg" ) ||
          !strcmp( fmt->name, "vcd" ) ||
          !strcmp( fmt->name, "vob" ) ||
144 145 146 147
          !strcmp( fmt->name, "mpegts" ) ||
          /* libavformat's redirector won't work */
          !strcmp( fmt->name, "redir" ) ||
          !strcmp( fmt->name, "sdp" ) ) )
Gildas Bazin's avatar
 
Gildas Bazin committed
148 149 150 151
    {
        return VLC_EGENERIC;
    }

152 153 154 155 156 157 158 159 160 161 162 163
    /* Don't trigger false alarms on bin files */
    if( !p_demux->b_force && !strcmp( fmt->name, "psxstr" ) )
    {
        int i_len;

        if( !p_demux->psz_path ) return VLC_EGENERIC;

        i_len = strlen( p_demux->psz_path );
        if( i_len < 4 ) return VLC_EGENERIC;

        if( strcasecmp( &p_demux->psz_path[i_len - 4], ".str" ) &&
            strcasecmp( &p_demux->psz_path[i_len - 4], ".xai" ) &&
164
            strcasecmp( &p_demux->psz_path[i_len - 3], ".xa" ) )
165 166 167 168 169
        {
            return VLC_EGENERIC;
        }
    }

170 171
    msg_Dbg( p_demux, "detected format: %s", fmt->name );

Gildas Bazin's avatar
 
Gildas Bazin committed
172 173 174 175
    /* 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 ) );
176
    p_sys->ic = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
177 178 179 180
    p_sys->fmt = fmt;
    p_sys->i_tk = 0;
    p_sys->tk = NULL;
    p_sys->i_pcr_tk = -1;
181
    p_sys->i_pcr = -1;
182
    p_sys->i_ssa_order = 0;
183
    TAB_INIT( p_sys->i_attachments, p_sys->attachments);
184
    p_sys->p_title = NULL;
Gildas Bazin's avatar
 
Gildas Bazin committed
185 186 187 188

    /* Create I/O wrapper */
    p_sys->io_buffer_size = 32768;  /* FIXME */
    p_sys->io_buffer = malloc( p_sys->io_buffer_size );
Gildas Bazin's avatar
 
Gildas Bazin committed
189 190 191 192
    p_sys->url.priv_data = p_demux;
    p_sys->url.prot = &p_sys->prot;
    p_sys->url.prot->name = "VLC I/O wrapper";
    p_sys->url.prot->url_open = 0;
193 194
    p_sys->url.prot->url_read =
                    (int (*) (URLContext *, unsigned char *, int))IORead;
Gildas Bazin's avatar
 
Gildas Bazin committed
195
    p_sys->url.prot->url_write = 0;
196
    p_sys->url.prot->url_seek =
197
                    (int64_t (*) (URLContext *, int64_t, int))IOSeek;
Gildas Bazin's avatar
 
Gildas Bazin committed
198 199
    p_sys->url.prot->url_close = 0;
    p_sys->url.prot->next = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
200
    init_put_byte( &p_sys->io, p_sys->io_buffer, p_sys->io_buffer_size,
Gildas Bazin's avatar
 
Gildas Bazin committed
201
                   0, &p_sys->url, IORead, NULL, IOSeek );
Gildas Bazin's avatar
 
Gildas Bazin committed
202 203 204 205 206 207

    /* Open it */
    if( av_open_input_stream( &p_sys->ic, &p_sys->io, p_demux->psz_path,
                              p_sys->fmt, NULL ) )
    {
        msg_Err( p_demux, "av_open_input_stream failed" );
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
208
        CloseDemux( p_this );
Gildas Bazin's avatar
 
Gildas Bazin committed
209 210 211
        return VLC_EGENERIC;
    }

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
212
    vlc_avcodec_lock(); /* avformat calls avcodec behind our back!!! */
213
    if( av_find_stream_info( p_sys->ic ) < 0 )
Gildas Bazin's avatar
 
Gildas Bazin committed
214
    {
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
215
        vlc_avcodec_unlock();
216
        msg_Warn( p_demux, "av_find_stream_info failed" );
Gildas Bazin's avatar
 
Gildas Bazin committed
217
    }
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
218
    vlc_avcodec_unlock();
Gildas Bazin's avatar
 
Gildas Bazin committed
219 220 221

    for( i = 0; i < p_sys->ic->nb_streams; i++ )
    {
Laurent Aimar's avatar
Laurent Aimar committed
222 223 224
        AVStream *s = p_sys->ic->streams[i];
        AVCodecContext *cc = s->codec;

Gildas Bazin's avatar
 
Gildas Bazin committed
225 226 227
        es_out_id_t  *es;
        es_format_t  fmt;
        vlc_fourcc_t fcc;
228
        const char *psz_type = "unknown";
Gildas Bazin's avatar
 
Gildas Bazin committed
229

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
230
        if( !GetVlcFourcc( cc->codec_id, NULL, &fcc, NULL ) )
Gildas Bazin's avatar
 
Gildas Bazin committed
231 232 233 234 235 236
            fcc = VLC_FOURCC( 'u', 'n', 'd', 'f' );

        switch( cc->codec_type )
        {
        case CODEC_TYPE_AUDIO:
            es_format_Init( &fmt, AUDIO_ES, fcc );
237
            fmt.i_bitrate = cc->bit_rate;
Gildas Bazin's avatar
 
Gildas Bazin committed
238 239
            fmt.audio.i_channels = cc->channels;
            fmt.audio.i_rate = cc->sample_rate;
Alexis Ballier's avatar
Alexis Ballier committed
240
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
Gildas Bazin's avatar
 
Gildas Bazin committed
241
            fmt.audio.i_bitspersample = cc->bits_per_sample;
Alexis Ballier's avatar
Alexis Ballier committed
242 243 244
#else
            fmt.audio.i_bitspersample = cc->bits_per_coded_sample;
#endif
Gildas Bazin's avatar
 
Gildas Bazin committed
245
            fmt.audio.i_blockalign = cc->block_align;
246
            psz_type = "audio";
Gildas Bazin's avatar
 
Gildas Bazin committed
247
            break;
248

Gildas Bazin's avatar
 
Gildas Bazin committed
249 250
        case CODEC_TYPE_VIDEO:
            es_format_Init( &fmt, VIDEO_ES, fcc );
251 252 253 254 255 256 257 258 259 260 261 262 263

            /* 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;
            }

Gildas Bazin's avatar
 
Gildas Bazin committed
264 265
            fmt.video.i_width = cc->width;
            fmt.video.i_height = cc->height;
Gildas Bazin's avatar
 
Gildas Bazin committed
266 267 268 269 270
            if( cc->palctrl )
            {
                fmt.video.p_palette = malloc( sizeof(video_palette_t) );
                *fmt.video.p_palette = *(video_palette_t *)cc->palctrl;
            }
271
            psz_type = "video";
Gildas Bazin's avatar
 
Gildas Bazin committed
272
            break;
273

274 275
        case CODEC_TYPE_SUBTITLE:
            es_format_Init( &fmt, SPU_ES, fcc );
276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317
            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 );
                }
            }

318
            psz_type = "subtitle";
319
            break;
320

Gildas Bazin's avatar
 
Gildas Bazin committed
321
        default:
322
            es_format_Init( &fmt, UNKNOWN_ES, 0 );
323 324 325 326 327 328 329
#ifdef HAVE_FFMPEG_CODEC_ATTACHMENT
            if( cc->codec_type == CODEC_TYPE_ATTACHMENT )
            {
                input_attachment_t *p_attachment;
                psz_type = "attachment";
                if( cc->codec_id == CODEC_ID_TTF )
                {
Laurent Aimar's avatar
Laurent Aimar committed
330
                    p_attachment = vlc_input_attachment_New( s->filename, "application/x-truetype-font", NULL,
331 332 333 334 335 336 337 338
                                             cc->extradata, (int)cc->extradata_size );
                    TAB_APPEND( p_sys->i_attachments, p_sys->attachments, p_attachment );
                }
                else msg_Warn( p_demux, "unsupported attachment type in ffmpeg demux" );
            }
            break;
#endif

339 340
            if( cc->codec_type == CODEC_TYPE_DATA )
                psz_type = "data";
341

342
            msg_Warn( p_demux, "unsupported track type in ffmpeg demux" );
Derk-Jan Hartman's avatar
Derk-Jan Hartman committed
343
            break;
Gildas Bazin's avatar
 
Gildas Bazin committed
344
        }
Laurent Aimar's avatar
Laurent Aimar committed
345
        fmt.psz_language = strdup( s->language );
346 347
        if( s->disposition & AV_DISPOSITION_DEFAULT )
            fmt.i_priority = 1000;
348 349 350 351 352

#ifdef HAVE_FFMPEG_CODEC_ATTACHMENT
        if( cc->codec_type != CODEC_TYPE_ATTACHMENT )
#endif
        {
353
            const bool    b_ogg = !strcmp( p_sys->fmt->name, "ogg" );
354 355 356
            const uint8_t *p_extra = cc->extradata;
            unsigned      i_extra  = cc->extradata_size;

357
            if( cc->codec_id == CODEC_ID_THEORA && b_ogg )
358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380
            {
                unsigned pi_size[3];
                void     *pp_data[3];
                unsigned i_count;
                for( i_count = 0; i_count < 3; i_count++ )
                {
                    if( i_extra < 2 )
                        break;
                    pi_size[i_count] = GetWBE( p_extra );
                    pp_data[i_count] = (uint8_t*)&p_extra[2];
                    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;
                }
            }
381
            else if( cc->codec_id == CODEC_ID_SPEEX && b_ogg )
382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411
            {
                uint8_t p_dummy_comment[] = {
                    0, 0, 0, 0,
                    0, 0, 0, 0,
                };
                unsigned pi_size[2];
                void     *pp_data[2];

                pi_size[0] = i_extra;
                pp_data[0] = (uint8_t*)p_extra;

                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 );
                }
            }
412
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
413
        es = es_out_Add( p_demux->out, &fmt );
414 415
        if( s->disposition & AV_DISPOSITION_DEFAULT )
            es_out_Control( p_demux->out, ES_OUT_SET_ES_DEFAULT, es );
416
        es_format_Clean( &fmt );
Gildas Bazin's avatar
 
Gildas Bazin committed
417 418

        msg_Dbg( p_demux, "adding es: %s codec = %4.4s",
419
                 psz_type, (char*)&fcc );
Gildas Bazin's avatar
 
Gildas Bazin committed
420 421
        TAB_APPEND( p_sys->i_tk, p_sys->tk, es );
    }
422 423
    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
424 425 426 427

    msg_Dbg( p_demux, "AVFormat supported stream" );
    msg_Dbg( p_demux, "    - format = %s (%s)",
             p_sys->fmt->name, p_sys->fmt->long_name );
428
    msg_Dbg( p_demux, "    - start time = %"PRId64, i_start_time );
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
429
    msg_Dbg( p_demux, "    - duration = %"PRId64,
430
             ( p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE ) ?
Gildas Bazin's avatar
 
Gildas Bazin committed
431
             p_sys->ic->duration * 1000000 / AV_TIME_BASE : -1 );
Gildas Bazin's avatar
 
Gildas Bazin committed
432

Rémi Duraffort's avatar
Typo  
Rémi Duraffort committed
433
#ifdef HAVE_FFMPEG_CHAPTERS
434 435
    if( p_sys->ic->nb_chapters > 0 )
        p_sys->p_title = vlc_input_title_New();
436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453
    for( i = 0; i < p_sys->ic->nb_chapters; i++ )
    {
        seekpoint_t *s = vlc_seekpoint_New();

        if( p_sys->ic->chapters[i]->title )
        {
            s->psz_name = strdup( p_sys->ic->chapters[i]->title );
            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 );
    }
#endif

Gildas Bazin's avatar
 
Gildas Bazin committed
454 455 456 457 458 459
    return VLC_SUCCESS;
}

/*****************************************************************************
 * Close
 *****************************************************************************/
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
460
void CloseDemux( vlc_object_t *p_this )
Gildas Bazin's avatar
 
Gildas Bazin committed
461 462 463 464
{
    demux_t     *p_demux = (demux_t*)p_this;
    demux_sys_t *p_sys = p_demux->p_sys;

465
    FREENULL( p_sys->tk );
466

467
    if( p_sys->ic ) av_close_input_stream( p_sys->ic );
468

469 470 471 472
    for( int i = 0; i < p_sys->i_attachments; i++ )
        free( p_sys->attachments[i] );
    TAB_CLEAN( p_sys->i_attachments, p_sys->attachments);

473 474 475
    if( p_sys->p_title )
        vlc_input_title_Delete( p_sys->p_title );

476
    free( p_sys->io_buffer );
Gildas Bazin's avatar
 
Gildas Bazin committed
477 478 479 480 481 482 483 484 485 486 487
    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
488
    int64_t     i_start_time;
Gildas Bazin's avatar
 
Gildas Bazin committed
489 490 491 492 493 494 495 496 497 498 499

    /* 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;
    }
500
    const AVStream *p_stream = p_sys->ic->streams[pkt.stream_index];
501
    if( p_stream->codec->codec_id == CODEC_ID_SSA )
Gildas Bazin's avatar
 
Gildas Bazin committed
502
    {
503 504 505 506 507 508 509 510 511
        p_frame = BuildSsaFrame( &pkt, p_sys->i_ssa_order++ );
        if( !p_frame )
            return 1;
    }
    else
    {
        if( ( p_frame = block_New( p_demux, pkt.size ) ) == NULL )
            return 0;
        memcpy( p_frame->p_buffer, pkt.data, pkt.size );
Gildas Bazin's avatar
 
Gildas Bazin committed
512
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
513

514 515 516
    if( pkt.flags & PKT_FLAG_KEY )
        p_frame->i_flags |= BLOCK_FLAG_TYPE_I;

517
    i_start_time = ( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE ) ?
518
        ( p_sys->ic->start_time * 1000000 / AV_TIME_BASE )  : 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
519

520
    p_frame->i_dts = ( pkt.dts == (int64_t)AV_NOPTS_VALUE ) ?
521
        VLC_TS_INVALID : (pkt.dts) * 1000000 *
522
        p_stream->time_base.num /
523
        p_stream->time_base.den - i_start_time + VLC_TS_0;
524
    p_frame->i_pts = ( pkt.pts == (int64_t)AV_NOPTS_VALUE ) ?
525
        VLC_TS_INVALID : (pkt.pts) * 1000000 *
526
        p_stream->time_base.num /
527
        p_stream->time_base.den - i_start_time + VLC_TS_0;
528
    if( pkt.duration > 0 && p_frame->i_length <= 0 )
529
        p_frame->i_length = pkt.duration * 1000000 *
530
            p_stream->time_base.num /
531
            p_stream->time_base.den;
Gildas Bazin's avatar
 
Gildas Bazin committed
532

533 534 535 536 537
    if( pkt.dts != AV_NOPTS_VALUE && pkt.dts == pkt.pts &&
        p_stream->codec->codec_type == CODEC_TYPE_VIDEO )
    {
        /* Add here notoriously bugged file formats/samples regarding PTS */
        if( !strcmp( p_sys->fmt->name, "flv" ) )
538
            p_frame->i_pts = VLC_TS_INVALID;
539
    }
540
#ifdef AVFORMAT_DEBUG
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
541
    msg_Dbg( p_demux, "tk[%d] dts=%"PRId64" pts=%"PRId64,
Gildas Bazin's avatar
 
Gildas Bazin committed
542
             pkt.stream_index, p_frame->i_dts, p_frame->i_pts );
543
#endif
Gildas Bazin's avatar
 
Gildas Bazin committed
544

545
    if( p_frame->i_dts > VLC_TS_INVALID  &&
Gildas Bazin's avatar
 
Gildas Bazin committed
546
        ( pkt.stream_index == p_sys->i_pcr_tk || p_sys->i_pcr_tk < 0 ) )
547
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
548
        p_sys->i_pcr_tk = pkt.stream_index;
549
        p_sys->i_pcr = p_frame->i_dts;
Gildas Bazin's avatar
 
Gildas Bazin committed
550 551 552 553 554

        es_out_Control( p_demux->out, ES_OUT_SET_PCR, (int64_t)p_sys->i_pcr );
    }

    es_out_Send( p_demux->out, p_sys->tk[pkt.stream_index], p_frame );
555 556

    UpdateSeekPoint( p_demux, p_sys->i_pcr);
Gildas Bazin's avatar
 
Gildas Bazin committed
557 558 559 560
    av_free_packet( &pkt );
    return 1;
}

561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582
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;
    }
}

583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616
static block_t *BuildSsaFrame( const AVPacket *p_pkt, unsigned i_order )
{
    if( p_pkt->size <= 0 )
        return NULL;

    char buffer[256];
    const size_t i_buffer_size = __MIN( sizeof(buffer) - 1, p_pkt->size );
    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;
    if( i_position <= 0 || i_position >= i_buffer_size )
        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 )
        p_frame->i_length = CLOCK_FREQ * ((h1 - h1) * 3600 +
                                          (m1-m0) * 60 +
                                          (s1-s0) * 1) +
                            CLOCK_FREQ * (c1-c0) / 100;
    return p_frame;
}

Gildas Bazin's avatar
 
Gildas Bazin committed
617 618 619 620 621 622 623 624 625 626 627 628
/*****************************************************************************
 * Control:
 *****************************************************************************/
static int Control( demux_t *p_demux, int i_query, va_list args )
{
    demux_sys_t *p_sys = p_demux->p_sys;
    double f, *pf;
    int64_t i64, *pi64;

    switch( i_query )
    {
        case DEMUX_GET_POSITION:
629
            pf = (double*) va_arg( args, double* ); *pf = 0.0;
Gildas Bazin's avatar
 
Gildas Bazin committed
630 631 632
            i64 = stream_Size( p_demux->s );
            if( i64 > 0 )
            {
633 634
                double current = stream_Tell( p_demux->s );
                *pf = current / (double)i64;
Gildas Bazin's avatar
 
Gildas Bazin committed
635
            }
636

637
            if( (p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE) && (p_sys->i_pcr > 0) )
Gildas Bazin's avatar
 
Gildas Bazin committed
638
            {
639
                *pf = (double)p_sys->i_pcr / (double)p_sys->ic->duration;
Gildas Bazin's avatar
 
Gildas Bazin committed
640
            }
641

Gildas Bazin's avatar
 
Gildas Bazin committed
642 643 644 645
            return VLC_SUCCESS;

        case DEMUX_SET_POSITION:
            f = (double) va_arg( args, double );
646
            if( p_sys->i_pcr > 0 )
Gildas Bazin's avatar
 
Gildas Bazin committed
647
            {
648
                i64 = p_sys->ic->duration * f;
649
                if( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE )
Gildas Bazin's avatar
 
Gildas Bazin committed
650 651
                    i64 += p_sys->ic->start_time;

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
652
                msg_Warn( p_demux, "DEMUX_SET_POSITION: %"PRId64, i64 );
Gildas Bazin's avatar
 
Gildas Bazin committed
653

654 655 656 657
                /* 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, 0 ) < 0) )
Gildas Bazin's avatar
 
Gildas Bazin committed
658
                {
659
                    int64_t i_size = stream_Size( p_demux->s );
660
                    i64 = (i_size * f);
661

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
662
                    msg_Warn( p_demux, "DEMUX_SET_BYTE_POSITION: %"PRId64, i64 );
663
                    if( av_seek_frame( p_sys->ic, -1, i64, AVSEEK_FLAG_BYTE ) < 0 )
664
                        return VLC_EGENERIC;
Gildas Bazin's avatar
 
Gildas Bazin committed
665
                }
666 667 668 669
                else
                {
                    UpdateSeekPoint( p_demux, i64 );
                }
Gildas Bazin's avatar
 
Gildas Bazin committed
670
                p_sys->i_pcr = -1; /* Invalidate time display */
Gildas Bazin's avatar
 
Gildas Bazin committed
671 672 673
            }
            return VLC_SUCCESS;

674 675
        case DEMUX_GET_LENGTH:
            pi64 = (int64_t*)va_arg( args, int64_t * );
676
            if( p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE )
677 678 679 680 681 682
            {
                *pi64 = p_sys->ic->duration;
            }
            else *pi64 = 0;
            return VLC_SUCCESS;

Gildas Bazin's avatar
 
Gildas Bazin committed
683 684 685 686 687 688 689
        case DEMUX_GET_TIME:
            pi64 = (int64_t*)va_arg( args, int64_t * );
            *pi64 = p_sys->i_pcr;
            return VLC_SUCCESS;

        case DEMUX_SET_TIME:
            i64 = (int64_t)va_arg( args, int64_t );
690
            i64 = i64 *AV_TIME_BASE / 1000000;
691
            if( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE )
Gildas Bazin's avatar
 
Gildas Bazin committed
692 693
                i64 += p_sys->ic->start_time;

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
694
            msg_Warn( p_demux, "DEMUX_SET_TIME: %"PRId64, i64 );
Gildas Bazin's avatar
 
Gildas Bazin committed
695

696
            if( av_seek_frame( p_sys->ic, -1, i64, 0 ) < 0 )
Gildas Bazin's avatar
 
Gildas Bazin committed
697 698 699 700
            {
                return VLC_EGENERIC;
            }
            p_sys->i_pcr = -1; /* Invalidate time display */
701
            UpdateSeekPoint( p_demux, i64 );
Gildas Bazin's avatar
 
Gildas Bazin committed
702 703
            return VLC_SUCCESS;

704 705 706 707 708 709 710 711
        case DEMUX_HAS_UNSUPPORTED_META:
        {
            bool *pb_bool = (bool*)va_arg( args, bool* );
            *pb_bool = true;
            return VLC_SUCCESS;
        }


712 713
        case DEMUX_GET_META:
        {
Clément Stenac's avatar
Clément Stenac committed
714
            vlc_meta_t *p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
715 716 717 718 719 720 721 722 723

            if( !p_sys->ic->title[0] || !p_sys->ic->author[0] ||
                !p_sys->ic->copyright[0] || !p_sys->ic->comment[0] ||
                /*!p_sys->ic->album[0] ||*/ !p_sys->ic->genre[0] )
            {
                return VLC_EGENERIC;
            }

            if( p_sys->ic->title[0] )
Clément Stenac's avatar
Clément Stenac committed
724
                vlc_meta_SetTitle( p_meta, p_sys->ic->title );
725
            if( p_sys->ic->author[0] )
Clément Stenac's avatar
Clément Stenac committed
726
                vlc_meta_SetArtist( p_meta, p_sys->ic->author );
727
            if( p_sys->ic->copyright[0] )
Clément Stenac's avatar
Clément Stenac committed
728
                vlc_meta_SetCopyright( p_meta, p_sys->ic->copyright );
729
            if( p_sys->ic->comment[0] )
Clément Stenac's avatar
Clément Stenac committed
730
                vlc_meta_SetDescription( p_meta, p_sys->ic->comment );
731
            if( p_sys->ic->genre[0] )
Clément Stenac's avatar
Clément Stenac committed
732
                vlc_meta_SetGenre( p_meta, p_sys->ic->genre );
733 734 735
            return VLC_SUCCESS;
        }

736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752
        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;
        }

753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798
        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;

            i64 = p_sys->p_title->seekpoint[i_seekpoint]->i_time_offset *AV_TIME_BASE / 1000000;
            if( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE )
                i64 += p_sys->ic->start_time;

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

            if( av_seek_frame( p_sys->ic, -1, i64, 0 ) < 0 )
            {
                return VLC_EGENERIC;
            }
            p_sys->i_pcr = -1; /* Invalidate time display */
            UpdateSeekPoint( p_demux, i64 );
            return VLC_SUCCESS;
        }


Gildas Bazin's avatar
 
Gildas Bazin committed
799 800 801 802 803 804 805 806 807 808
        default:
            return VLC_EGENERIC;
    }
}

/*****************************************************************************
 * I/O wrappers for libavformat
 *****************************************************************************/
static int IORead( void *opaque, uint8_t *buf, int buf_size )
{
Gildas Bazin's avatar
 
Gildas Bazin committed
809 810
    URLContext *p_url = opaque;
    demux_t *p_demux = p_url->priv_data;
811
    if( buf_size < 0 ) return -1;
812 813
    int i_ret = stream_Read( p_demux->s, buf, buf_size );
    return i_ret ? i_ret : -1;
Gildas Bazin's avatar
 
Gildas Bazin committed
814 815
}

816
static int64_t IOSeek( void *opaque, int64_t offset, int whence )
Gildas Bazin's avatar
 
Gildas Bazin committed
817
{
Gildas Bazin's avatar
 
Gildas Bazin committed
818 819
    URLContext *p_url = opaque;
    demux_t *p_demux = p_url->priv_data;
Rémi Duraffort's avatar
Rémi Duraffort committed
820
    int64_t i_absolute;
821
    int64_t i_size = stream_Size( p_demux->s );
Gildas Bazin's avatar
 
Gildas Bazin committed
822

823
#ifdef AVFORMAT_DEBUG
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
824
    msg_Warn( p_demux, "IOSeek offset: %"PRId64", whence: %i", offset, whence );
825
#endif
Gildas Bazin's avatar
 
Gildas Bazin committed
826

Gildas Bazin's avatar
 
Gildas Bazin committed
827 828
    switch( whence )
    {
829 830 831 832
#ifdef AVSEEK_SIZE
        case AVSEEK_SIZE:
            return i_size;
#endif
Gildas Bazin's avatar
 
Gildas Bazin committed
833
        case SEEK_SET:
834
            i_absolute = (int64_t)offset;
Gildas Bazin's avatar
 
Gildas Bazin committed
835 836
            break;
        case SEEK_CUR:
837
            i_absolute = stream_Tell( p_demux->s ) + (int64_t)offset;
Gildas Bazin's avatar
 
Gildas Bazin committed
838 839
            break;
        case SEEK_END:
840
            i_absolute = i_size + (int64_t)offset;
Gildas Bazin's avatar
 
Gildas Bazin committed
841 842 843 844 845
            break;
        default:
            return -1;

    }
846

847
    if( i_absolute < 0 )
848 849 850 851
    {
        msg_Dbg( p_demux, "Trying to seek before the beginning" );
        return -1;
    }
852

853
    if( i_size > 0 && i_absolute >= i_size )
Rafaël Carré's avatar
Rafaël Carré committed
854
    {
855 856
        msg_Dbg( p_demux, "Trying to seek too far : EOF?" );
        return -1;
Rafaël Carré's avatar
Rafaël Carré committed
857
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
858 859 860

    if( stream_Seek( p_demux->s, i_absolute ) )
    {
861
        msg_Warn( p_demux, "we were not allowed to seek, or EOF " );
Gildas Bazin's avatar
 
Gildas Bazin committed
862 863 864
        return -1;
    }

865
    return stream_Tell( p_demux->s );
Gildas Bazin's avatar
 
Gildas Bazin committed
866 867
}

868
#endif /* HAVE_LIBAVFORMAT_AVFORMAT_H */