demux.c 37 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
 *****************************************************************************
Jean-Baptiste Kempf's avatar
LGPL  
Jean-Baptiste Kempf committed
4
 * Copyright (C) 2004-2009 VLC authors and VideoLAN
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
 *
Jean-Baptiste Kempf's avatar
LGPL  
Jean-Baptiste Kempf committed
10 11 12
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
Gildas Bazin's avatar
 
Gildas Bazin committed
13 14 15 16
 * (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
Jean-Baptiste Kempf's avatar
LGPL  
Jean-Baptiste Kempf committed
17 18
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
Gildas Bazin's avatar
 
Gildas Bazin committed
19
 *
Jean-Baptiste Kempf's avatar
LGPL  
Jean-Baptiste Kempf committed
20 21 22
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software 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 "../../codec/avcodec/avcodec.h"
42
#include "../../codec/avcodec/chroma.h"
43
#include "../../codec/avcodec/avcommon_compat.h"
44
#include "avformat.h"
45
#include "../xiph.h"
46
#include "../vobsub.h"
47

48
#include <libavformat/avformat.h>
49

50 51 52 53 54 55 56 57
#if ( (LIBAVUTIL_VERSION_MICRO <  100 && LIBAVUTIL_VERSION_INT >= AV_VERSION_INT( 53, 15, 0) ) || \
      (LIBAVUTIL_VERSION_MICRO >= 100 && LIBAVUTIL_VERSION_INT >= AV_VERSION_INT( 52, 85, 100 ) )  )
# if LIBAVFORMAT_VERSION_CHECK( 55, 18, 0, 40, 100)
#  include <libavutil/display.h>
#  define HAVE_AV_STREAM_GET_SIDE_DATA
# endif
#endif

58 59
//#define AVFORMAT_DEBUG 1

60
# define HAVE_AVUTIL_CODEC_ATTACHMENT 1
61

Gildas Bazin's avatar
 
Gildas Bazin committed
62 63 64 65 66 67 68 69 70 71 72 73 74
/*****************************************************************************
 * demux_sys_t: demux descriptor
 *****************************************************************************/
struct demux_sys_t
{
    int             io_buffer_size;
    uint8_t        *io_buffer;

    AVInputFormat  *fmt;
    AVFormatContext *ic;

    int             i_tk;
    es_out_id_t     **tk;
75 76
    int64_t         *tk_pcr;
    int64_t         i_pcr;
77

78 79
    unsigned    i_ssa_order;

80 81
    int                i_attachments;
    input_attachment_t **attachments;
82 83 84

    /* Only one title with seekpoints possible atm. */
    input_title_t *p_title;
Gildas Bazin's avatar
 
Gildas Bazin committed
85 86 87 88 89 90 91 92 93
};

/*****************************************************************************
 * 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 );
94
static int64_t IOSeek( void *opaque, int64_t offset, int whence );
Gildas Bazin's avatar
 
Gildas Bazin committed
95

96
static block_t *BuildSsaFrame( const AVPacket *p_pkt, unsigned i_order );
97
static void UpdateSeekPoint( demux_t *p_demux, int64_t i_time );
98
static void ResetTime( demux_t *p_demux, int64_t i_time );
99

100 101 102 103 104 105 106 107 108 109
static vlc_fourcc_t CodecTagToFourcc( uint32_t codec_tag )
{
    // convert from little-endian avcodec codec_tag to VLC native-endian fourcc
#ifdef WORDS_BIGENDIAN
    return bswap32(codec_tag);
#else
    return codec_tag;
#endif
}

Gildas Bazin's avatar
 
Gildas Bazin committed
110 111 112
/*****************************************************************************
 * Open
 *****************************************************************************/
113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155

static void get_rotation(es_format_t *fmt, AVStream *s)
{
    char const *kRotateKey = "rotate";
    AVDictionaryEntry *rotation = av_dict_get(s->metadata, kRotateKey, NULL, 0);
    long angle = 0;

    if( rotation )
    {
        angle = strtol(rotation->value, NULL, 10);

        if (angle > 45 && angle < 135)
            fmt->video.orientation = ORIENT_ROTATED_90;

        else if (angle > 135 && angle < 225)
            fmt->video.orientation = ORIENT_ROTATED_180;

        else if (angle > 225 && angle < 315)
            fmt->video.orientation = ORIENT_ROTATED_270;

        else
            fmt->video.orientation = ORIENT_NORMAL;
    }
#ifdef HAVE_AV_STREAM_GET_SIDE_DATA
    int32_t *matrix = (int32_t *)av_stream_get_side_data(s, AV_PKT_DATA_DISPLAYMATRIX, NULL);
    if( matrix ) {
        angle = lround(av_display_rotation_get(matrix));

        if (angle > 45 && angle < 135)
            fmt->video.orientation = ORIENT_ROTATED_270;

        else if (angle > 135 || angle < -135)
            fmt->video.orientation = ORIENT_ROTATED_180;

        else if (angle < -45 && angle > -135)
            fmt->video.orientation = ORIENT_ROTATED_90;

        else
            fmt->video.orientation = ORIENT_NORMAL;
    }
#endif
}

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
156
int OpenDemux( vlc_object_t *p_this )
Gildas Bazin's avatar
 
Gildas Bazin committed
157 158 159
{
    demux_t       *p_demux = (demux_t*)p_this;
    demux_sys_t   *p_sys;
160
    AVProbeData   pd = { };
161
    AVInputFormat *fmt = NULL;
162 163
    unsigned int  i;
    int64_t       i_start_time = -1;
164
    bool          b_can_seek;
165
    char         *psz_url;
166
    int           error;
Gildas Bazin's avatar
 
Gildas Bazin committed
167

168 169 170 171 172 173 174 175
    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
176
    /* Init Probe data */
177
    pd.filename = psz_url;
178
    if( ( pd.buf_size = stream_Peek( p_demux->s, (const uint8_t**)&pd.buf, 2048 + 213 ) ) <= 0 )
Gildas Bazin's avatar
 
Gildas Bazin committed
179
    {
180
        free( psz_url );
Gildas Bazin's avatar
 
Gildas Bazin committed
181 182 183
        msg_Warn( p_demux, "cannot peek" );
        return VLC_EGENERIC;
    }
184
    stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_can_seek );
Gildas Bazin's avatar
 
Gildas Bazin committed
185

186
    vlc_init_avformat(p_this);
Gildas Bazin's avatar
 
Gildas Bazin committed
187

188
    char *psz_format = var_InheritString( p_this, "avformat-format" );
189 190
    if( psz_format )
    {
191
        if( (fmt = av_find_input_format(psz_format)) )
192 193 194 195
            msg_Dbg( p_demux, "forcing format: %s", fmt->name );
        free( psz_format );
    }

Gildas Bazin's avatar
 
Gildas Bazin committed
196
    /* Guess format */
197
    if( !fmt && !( fmt = av_probe_input_format( &pd, 1 ) ) )
Gildas Bazin's avatar
 
Gildas Bazin committed
198 199
    {
        msg_Dbg( p_demux, "couldn't guess format" );
200
        free( psz_url );
Gildas Bazin's avatar
 
Gildas Bazin committed
201 202 203
        return VLC_EGENERIC;
    }

204
    if( !p_demux->b_force )
Gildas Bazin's avatar
 
Gildas Bazin committed
205
    {
206 207 208 209 210
        static const char ppsz_blacklist[][16] = {
            /* Don't handle MPEG unless forced */
            "mpeg", "vcd", "vob", "mpegts",
            /* libavformat's redirector won't work */
            "redir", "sdp",
211 212
            /* Don't handle subtitles format */
            "ass", "srt", "microdvd",
213 214 215 216 217 218 219 220 221 222 223
            ""
        };

        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
224 225
    }

226 227 228 229 230
    /* Don't trigger false alarms on bin files */
    if( !p_demux->b_force && !strcmp( fmt->name, "psxstr" ) )
    {
        int i_len;

231 232 233 234 235
        if( !p_demux->psz_file )
        {
            free( psz_url );
            return VLC_EGENERIC;
        }
236

237
        i_len = strlen( p_demux->psz_file );
238 239 240 241 242
        if( i_len < 4 )
        {
            free( psz_url );
            return VLC_EGENERIC;
        }
243

244 245 246
        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" ) )
247
        {
248
            free( psz_url );
249 250 251 252
            return VLC_EGENERIC;
        }
    }

253 254
    msg_Dbg( p_demux, "detected format: %s", fmt->name );

Gildas Bazin's avatar
 
Gildas Bazin committed
255 256 257
    /* Fill p_demux fields */
    p_demux->pf_demux = Demux;
    p_demux->pf_control = Control;
258
    p_demux->p_sys = p_sys = xmalloc( sizeof( demux_sys_t ) );
259
    p_sys->ic = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
260 261 262
    p_sys->fmt = fmt;
    p_sys->i_tk = 0;
    p_sys->tk = NULL;
263
    p_sys->tk_pcr = NULL;
264
    p_sys->i_ssa_order = 0;
265
    TAB_INIT( p_sys->i_attachments, p_sys->attachments);
266
    p_sys->p_title = NULL;
Gildas Bazin's avatar
 
Gildas Bazin committed
267 268 269

    /* Create I/O wrapper */
    p_sys->io_buffer_size = 32768;  /* FIXME */
270
    p_sys->io_buffer = xmalloc( p_sys->io_buffer_size );
271

272
    p_sys->ic = avformat_alloc_context();
Hannes Domani's avatar
Hannes Domani committed
273
    AVIOContext *pb = p_sys->ic->pb = avio_alloc_context( p_sys->io_buffer,
274
        p_sys->io_buffer_size, 0, p_demux, IORead, NULL, IOSeek );
275
    p_sys->ic->pb->seekable = b_can_seek ? AVIO_SEEKABLE_NORMAL : 0;
276
    error = avformat_open_input(&p_sys->ic, psz_url, p_sys->fmt, NULL);
277

278
    if( error < 0 )
Gildas Bazin's avatar
 
Gildas Bazin committed
279
    {
280 281
        msg_Err( p_demux, "Could not open %s: %s", psz_url,
                 vlc_strerror_c(AVUNERROR(error)) );
Hannes Domani's avatar
Hannes Domani committed
282
        av_free( pb );
283
        p_sys->ic = NULL;
284
        free( psz_url );
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
285
        CloseDemux( p_this );
Gildas Bazin's avatar
 
Gildas Bazin committed
286 287
        return VLC_EGENERIC;
    }
288
    free( psz_url );
Gildas Bazin's avatar
 
Gildas Bazin committed
289

290
#if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(26<<8)+0)
291
    char *psz_opts = var_InheritString( p_demux, "avformat-options" );
292 293
    AVDictionary *options[p_sys->ic->nb_streams ? p_sys->ic->nb_streams : 1];
    options[0] = NULL;
294 295
    unsigned int nb_streams = p_sys->ic->nb_streams;
    for (unsigned i = 1; i < nb_streams; i++)
296
        options[i] = NULL;
297 298
    if (psz_opts && *psz_opts) {
        options[0] = vlc_av_get_options(psz_opts);
299
        for (unsigned i = 1; i < nb_streams; i++) {
300 301 302 303 304 305
            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 );
306
    /* FIXME: what if nb_streams change after that call? */
307 308
    vlc_avcodec_unlock();
    AVDictionaryEntry *t = NULL;
Rafaël Carré's avatar
Rafaël Carré committed
309
    while ((t = av_dict_get(options[0], "", t, AV_DICT_IGNORE_SUFFIX))) {
310 311
        msg_Err( p_demux, "Unknown option \"%s\"", t->key );
    }
312
    av_dict_free(&options[0]);
313
    for (unsigned i = 1; i < nb_streams; i++) {
Rafaël Carré's avatar
Rafaël Carré committed
314 315
        av_dict_free(&options[i]);
    }
316
#else
317
    vlc_avcodec_lock(); /* avformat calls avcodec behind our back!!! */
318
    error = av_find_stream_info( p_sys->ic );
319
    vlc_avcodec_unlock();
320 321
#endif

322
    if( error < 0 )
Gildas Bazin's avatar
 
Gildas Bazin committed
323
    {
324 325
        msg_Warn( p_demux, "Could not find stream info: %s",
                  vlc_strerror_c(AVUNERROR(error)) );
Gildas Bazin's avatar
 
Gildas Bazin committed
326 327 328 329
    }

    for( i = 0; i < p_sys->ic->nb_streams; i++ )
    {
Laurent Aimar's avatar
Laurent Aimar committed
330 331
        AVStream *s = p_sys->ic->streams[i];
        AVCodecContext *cc = s->codec;
332
        es_out_id_t  *es = NULL;
Gildas Bazin's avatar
 
Gildas Bazin committed
333 334
        es_format_t  fmt;
        vlc_fourcc_t fcc;
335
        const char *psz_type = "unknown";
Gildas Bazin's avatar
 
Gildas Bazin committed
336

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
337
        if( !GetVlcFourcc( cc->codec_id, NULL, &fcc, NULL ) )
Gildas Bazin's avatar
 
Gildas Bazin committed
338 339
            fcc = VLC_FOURCC( 'u', 'n', 'd', 'f' );

340 341 342
#if LIBAVFORMAT_VERSION_INT >= ((54<<16)+(2<<8)+0)
        /* Do not use the cover art as a stream */
        if( s->disposition == AV_DISPOSITION_ATTACHED_PIC )
343
            fcc = 0;
344
#endif
345 346 347 348 349
        if( fcc == 0 )
        {
            TAB_APPEND( p_sys->i_tk, p_sys->tk, NULL );
            continue;
        }
350

Gildas Bazin's avatar
 
Gildas Bazin committed
351 352
        switch( cc->codec_type )
        {
353
        case AVMEDIA_TYPE_AUDIO:
Gildas Bazin's avatar
 
Gildas Bazin committed
354
            es_format_Init( &fmt, AUDIO_ES, fcc );
355
            fmt.i_original_fourcc = CodecTagToFourcc( cc->codec_tag );
356
            fmt.i_bitrate = cc->bit_rate;
Gildas Bazin's avatar
 
Gildas Bazin committed
357 358
            fmt.audio.i_channels = cc->channels;
            fmt.audio.i_rate = cc->sample_rate;
Alexis Ballier's avatar
Alexis Ballier committed
359
            fmt.audio.i_bitspersample = cc->bits_per_coded_sample;
Gildas Bazin's avatar
 
Gildas Bazin committed
360
            fmt.audio.i_blockalign = cc->block_align;
361
            psz_type = "audio";
Gildas Bazin's avatar
 
Gildas Bazin committed
362
            break;
363

364
        case AVMEDIA_TYPE_VIDEO:
Gildas Bazin's avatar
 
Gildas Bazin committed
365
            es_format_Init( &fmt, VIDEO_ES, fcc );
366
            fmt.i_original_fourcc = CodecTagToFourcc( cc->codec_tag );
367

368
            fmt.video.i_bits_per_pixel = cc->bits_per_coded_sample;
369
            /* Special case for raw video data */
370
            if( cc->codec_id == AV_CODEC_ID_RAWVIDEO )
371 372 373 374 375 376 377 378 379
            {
                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;
            }
380
            /* We need this for the h264 packetizer */
381
            else if( cc->codec_id == AV_CODEC_ID_H264 && ( p_sys->fmt == av_find_input_format("flv") ||
382
                p_sys->fmt == av_find_input_format("matroska") || p_sys->fmt == av_find_input_format("mp4") ) )
383
                fmt.i_original_fourcc = VLC_FOURCC( 'a', 'v', 'c', '1' );
384

Gildas Bazin's avatar
 
Gildas Bazin committed
385 386
            fmt.video.i_width = cc->width;
            fmt.video.i_height = cc->height;
387

388
            get_rotation(&fmt, s);
389

390
# warning FIXME: implement palette transmission
391
            psz_type = "video";
392
            fmt.video.i_frame_rate = cc->time_base.den;
393
            fmt.video.i_frame_rate_base = cc->time_base.num * __MAX( cc->ticks_per_frame, 1 );
Wills Wang's avatar
Wills Wang committed
394
            fmt.video.i_sar_num = s->sample_aspect_ratio.num;
395 396 397 398
            if (s->sample_aspect_ratio.num > 0)
                fmt.video.i_sar_den = s->sample_aspect_ratio.den;
            else
                fmt.video.i_sar_den = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
399
            break;
400

401
        case AVMEDIA_TYPE_SUBTITLE:
402
            es_format_Init( &fmt, SPU_ES, fcc );
403
            fmt.i_original_fourcc = CodecTagToFourcc( cc->codec_tag );
404
            if( strncmp( p_sys->ic->iformat->name, "matroska", 8 ) == 0 &&
405
                cc->codec_id == AV_CODEC_ID_DVD_SUBTITLE &&
406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445
                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 );
                }
            }

446
            psz_type = "subtitle";
447
            break;
448

Gildas Bazin's avatar
 
Gildas Bazin committed
449
        default:
450
            es_format_Init( &fmt, UNKNOWN_ES, 0 );
451
            fmt.i_original_fourcc = CodecTagToFourcc( cc->codec_tag );
Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
452
#ifdef HAVE_AVUTIL_CODEC_ATTACHMENT
453
            if( cc->codec_type == AVMEDIA_TYPE_ATTACHMENT )
454 455
            {
                input_attachment_t *p_attachment;
456

457
                psz_type = "attachment";
458
                if( cc->codec_id == AV_CODEC_ID_TTF )
459
                {
460
                    AVDictionaryEntry *filename = av_dict_get( s->metadata, "filename", NULL, 0 );
461 462 463 464 465
                    if( filename && filename->value )
                    {
                        p_attachment = vlc_input_attachment_New(
                                filename->value, "application/x-truetype-font",
                                NULL, cc->extradata, (int)cc->extradata_size );
466 467 468
                        if( p_attachment )
                            TAB_APPEND( p_sys->i_attachments, p_sys->attachments,
                                        p_attachment );
469
                    }
470
                }
Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
471
                else msg_Warn( p_demux, "unsupported attachment type (%u) in avformat demux", cc->codec_id );
472
            }
473
            else
474
#endif
475 476 477
            {
                if( cc->codec_type == AVMEDIA_TYPE_DATA )
                    psz_type = "data";
478

479
                msg_Warn( p_demux, "unsupported track type (%u:%u) in avformat demux", cc->codec_type, cc->codec_id );
480
            }
Derk-Jan Hartman's avatar
Derk-Jan Hartman committed
481
            break;
Gildas Bazin's avatar
 
Gildas Bazin committed
482
        }
483

484
        AVDictionaryEntry *language = av_dict_get( s->metadata, "language", NULL, 0 );
485 486 487
        if ( language && language->value )
            fmt.psz_language = strdup( language->value );

488
        if( s->disposition & AV_DISPOSITION_DEFAULT )
489
            fmt.i_priority = ES_PRIORITY_SELECTABLE_MIN + 1000;
490

Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
491
#ifdef HAVE_AVUTIL_CODEC_ATTACHMENT
492
        if( cc->codec_type != AVMEDIA_TYPE_ATTACHMENT )
493
#endif
494
        if( cc->codec_type != AVMEDIA_TYPE_DATA )
495
        {
496
            const bool    b_ogg = !strcmp( p_sys->fmt->name, "ogg" );
497 498 499
            const uint8_t *p_extra = cc->extradata;
            unsigned      i_extra  = cc->extradata_size;

500
            if( cc->codec_id == AV_CODEC_ID_THEORA && b_ogg )
501 502
            {
                unsigned pi_size[3];
Pierre Ynard's avatar
Pierre Ynard committed
503
                const void *pp_data[3];
504 505 506 507 508 509
                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
510
                    pp_data[i_count] = &p_extra[2];
511 512 513 514 515 516 517 518 519 520 521 522 523
                    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;
                }
            }
524
            else if( cc->codec_id == AV_CODEC_ID_SPEEX && b_ogg )
525
            {
Pierre Ynard's avatar
Pierre Ynard committed
526
                const uint8_t p_dummy_comment[] = {
527 528 529 530
                    0, 0, 0, 0,
                    0, 0, 0, 0,
                };
                unsigned pi_size[2];
Pierre Ynard's avatar
Pierre Ynard committed
531
                const void *pp_data[2];
532 533

                pi_size[0] = i_extra;
Pierre Ynard's avatar
Pierre Ynard committed
534
                pp_data[0] = p_extra;
535 536 537 538 539 540 541 542 543 544 545

                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;
                }
            }
546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571
            else if( cc->codec_id == AV_CODEC_ID_OPUS )
            {
                const uint8_t p_dummy_comment[] = {
                    'O', 'p', 'u', 's',
                    'T', 'a', 'g', 's',
                    0, 0, 0, 0, /* Vendor String length */
                                /* Vendor String */
                    0, 0, 0, 0, /* User Comment List Length */

                };
                unsigned pi_size[2];
                const void *pp_data[2];

                pi_size[0] = i_extra;
                pp_data[0] = 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;
                }
            }
572 573 574 575 576 577 578 579 580
            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 );
                }
            }
581 582 583 584 585
            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 );

586 587
            msg_Dbg( p_demux, "adding es: %s codec = %4.4s (%d)",
                     psz_type, (char*)&fcc, cc->codec_id  );
588
        }
589
        TAB_APPEND( p_sys->i_tk, p_sys->tk, es );
Gildas Bazin's avatar
 
Gildas Bazin committed
590
    }
591
    p_sys->tk_pcr = xcalloc( p_sys->i_tk, sizeof(*p_sys->tk_pcr) );
592

593 594
    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
595 596 597 598

    msg_Dbg( p_demux, "AVFormat supported stream" );
    msg_Dbg( p_demux, "    - format = %s (%s)",
             p_sys->fmt->name, p_sys->fmt->long_name );
599
    msg_Dbg( p_demux, "    - start time = %"PRId64, i_start_time );
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
600
    msg_Dbg( p_demux, "    - duration = %"PRId64,
601
             ( p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE ) ?
Gildas Bazin's avatar
 
Gildas Bazin committed
602
             p_sys->ic->duration * 1000000 / AV_TIME_BASE : -1 );
Gildas Bazin's avatar
 
Gildas Bazin committed
603

604
    if( p_sys->ic->nb_chapters > 0 )
605
    {
606
        p_sys->p_title = vlc_input_title_New();
607 608 609
        p_sys->p_title->i_length = p_sys->ic->duration * 1000000 / AV_TIME_BASE;
    }

610 611 612 613
    for( i = 0; i < p_sys->ic->nb_chapters; i++ )
    {
        seekpoint_t *s = vlc_seekpoint_New();

614
        AVDictionaryEntry *title = av_dict_get( p_sys->ic->metadata, "title", NULL, 0);
615
        if( title && title->value )
616
        {
617
            s->psz_name = strdup( title->value );
618 619 620 621 622 623 624 625 626 627
            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 );
    }

628
    ResetTime( p_demux, 0 );
Gildas Bazin's avatar
 
Gildas Bazin committed
629 630 631 632 633 634
    return VLC_SUCCESS;
}

/*****************************************************************************
 * Close
 *****************************************************************************/
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
635
void CloseDemux( vlc_object_t *p_this )
Gildas Bazin's avatar
 
Gildas Bazin committed
636 637 638 639
{
    demux_t     *p_demux = (demux_t*)p_this;
    demux_sys_t *p_sys = p_demux->p_sys;

640
    free( p_sys->tk );
641
    free( p_sys->tk_pcr );
642

643
    if( p_sys->ic )
644 645
    {
        av_free( p_sys->ic->pb );
646
#if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(26<<8)+0)
647 648 649 650
        avformat_close_input( &p_sys->ic );
#else
        av_close_input_stream( p_sys->ic );
#endif
651
    }
652

653 654 655 656
    for( int i = 0; i < p_sys->i_attachments; i++ )
        free( p_sys->attachments[i] );
    TAB_CLEAN( p_sys->i_attachments, p_sys->attachments);

657 658 659
    if( p_sys->p_title )
        vlc_input_title_Delete( p_sys->p_title );

660
    free( p_sys->io_buffer );
Gildas Bazin's avatar
 
Gildas Bazin committed
661 662 663 664 665 666 667 668 669 670 671
    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
672
    int64_t     i_start_time;
Gildas Bazin's avatar
 
Gildas Bazin committed
673 674

    /* Read a frame */
675 676
    int i_av_ret = av_read_frame( p_sys->ic, &pkt );
    if( i_av_ret )
Gildas Bazin's avatar
 
Gildas Bazin committed
677
    {
678 679 680 681
        /* Avoid EOF if av_read_frame returns AVERROR(EAGAIN) */
        if( i_av_ret == AVERROR(EAGAIN) )
            return 1;

Gildas Bazin's avatar
 
Gildas Bazin committed
682 683 684 685 686 687 688
        return 0;
    }
    if( pkt.stream_index < 0 || pkt.stream_index >= p_sys->i_tk )
    {
        av_free_packet( &pkt );
        return 1;
    }
689
    const AVStream *p_stream = p_sys->ic->streams[pkt.stream_index];
690 691 692 693 694 695
    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;
    }
696
    if( p_stream->codec->codec_id == AV_CODEC_ID_SSA )
Gildas Bazin's avatar
 
Gildas Bazin committed
697
    {
698 699
        p_frame = BuildSsaFrame( &pkt, p_sys->i_ssa_order++ );
        if( !p_frame )
700 701
        {
            av_free_packet( &pkt );
702
            return 1;
703
        }
704 705 706
    }
    else
    {
707
        if( ( p_frame = block_Alloc( pkt.size ) ) == NULL )
708 709
        {
            av_free_packet( &pkt );
710
            return 0;
711
        }
712
        memcpy( p_frame->p_buffer, pkt.data, pkt.size );
Gildas Bazin's avatar
 
Gildas Bazin committed
713
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
714

715
    if( pkt.flags & AV_PKT_FLAG_KEY )
716 717
        p_frame->i_flags |= BLOCK_FLAG_TYPE_I;

718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748
    /* 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;
    }
749
    if( pkt.duration > 0 && p_frame->i_length <= 0 )
750
        p_frame->i_length = pkt.duration * INT64_C(1000000) *
751
            p_stream->time_base.num /
752
            p_stream->time_base.den;
Gildas Bazin's avatar
 
Gildas Bazin committed
753

754
    if( pkt.dts != (int64_t)AV_NOPTS_VALUE && pkt.dts == pkt.pts &&
755
        p_stream->codec->codec_type == AVMEDIA_TYPE_VIDEO )
756 757 758
    {
        /* Add here notoriously bugged file formats/samples regarding PTS */
        if( !strcmp( p_sys->fmt->name, "flv" ) )
759
            p_frame->i_pts = VLC_TS_INVALID;
760
    }
761
#ifdef AVFORMAT_DEBUG
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
762
    msg_Dbg( p_demux, "tk[%d] dts=%"PRId64" pts=%"PRId64,
Gildas Bazin's avatar
 
Gildas Bazin committed
763
             pkt.stream_index, p_frame->i_dts, p_frame->i_pts );
764
#endif
765 766
    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
767

768 769 770
    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
771

772 773 774 775 776 777 778 779 780 781 782
    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
783 784
    }

785 786 787 788
    if( p_sys->tk[pkt.stream_index] != NULL )
        es_out_Send( p_demux->out, p_sys->tk[pkt.stream_index], p_frame );
    else
        block_Release( p_frame );
789

Gildas Bazin's avatar
 
Gildas Bazin committed
790 791 792 793
    av_free_packet( &pkt );
    return 1;
}

794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815
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;
    }
}

816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835
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 );
    }
}

836 837 838 839 840 841
static block_t *BuildSsaFrame( const AVPacket *p_pkt, unsigned i_order )
{
    if( p_pkt->size <= 0 )
        return NULL;

    char buffer[256];
842
    const size_t i_buffer_size = __MIN( (int)sizeof(buffer) - 1, p_pkt->size );
843 844 845 846 847 848 849 850 851 852 853
    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;
854
    if( i_position <= 0 || (unsigned)i_position >= i_buffer_size )
855 856 857 858 859 860
        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;

861
    block_t *p_frame = block_heap_Alloc( p, strlen(p) + 1 );
862
    if( p_frame )
Rémi Duraffort's avatar
Rémi Duraffort committed
863
        p_frame->i_length = CLOCK_FREQ * ((h1-h0) * 3600 +
864 865 866 867 868 869
                                          (m1-m0) * 60 +
                                          (s1-s0) * 1) +
                            CLOCK_FREQ * (c1-c0) / 100;
    return p_frame;
}

Gildas Bazin's avatar
 
Gildas Bazin committed
870 871 872 873 874 875
/*****************************************************************************
 * Control:
 *****************************************************************************/
static int Control( demux_t *p_demux, int i_query, va_list args )
{
    demux_sys_t *p_sys = p_demux->p_sys;
876
    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
877 878 879 880 881 882
    double f, *pf;
    int64_t i64, *pi64;

    switch( i_query )
    {
        case DEMUX_GET_POSITION:
883
            pf = (double*) va_arg( args, double* ); *pf = 0.0;
Gildas Bazin's avatar
 
Gildas Bazin committed
884 885 886
            i64 = stream_Size( p_demux->s );
            if( i64 > 0 )
            {
887 888
                double current = stream_Tell( p_demux->s );
                *pf = current / (double)i64;
Gildas Bazin's avatar
 
Gildas Bazin committed
889
            }
890

891
            if( (p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE) && (p_sys->i_pcr > 0) )
Gildas Bazin's avatar
 
Gildas Bazin committed
892
            {
893
                *pf = (double)p_sys->i_pcr / (double)p_sys->ic->duration;
Gildas Bazin's avatar
 
Gildas Bazin committed
894
            }
895

Gildas Bazin's avatar
 
Gildas Bazin committed
896 897 898 899
            return VLC_SUCCESS;

        case DEMUX_SET_POSITION:
            f = (double) va_arg( args, double );
900
            i64 = p_sys->ic->duration * f + i_start_time;
Gildas Bazin's avatar
 
Gildas Bazin committed
901

902
            msg_Warn( p_demux, "DEMUX_SET_POSITION: %"PRId64, i64 );
Gildas Bazin's avatar
 
Gildas Bazin committed
903

904 905 906 907 908 909 910
            /* 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);
911

912 913 914 915 916 917 918 919 920
                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
921 922 923
            }
            return VLC_SUCCESS;

924 925
        case DEMUX_GET_LENGTH:
            pi64 = (int64_t*)va_arg( args, int64_t * );
926
            if( p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE )
927 928 929
                *pi64 = p_sys->ic->duration * 1000000 / AV_TIME_BASE;
            else
                *pi64 = 0;
930 931
            return VLC_SUCCESS;

Gildas Bazin's avatar
 
Gildas Bazin committed
932 933 934 935 936 937
        case DEMUX_GET_TIME:
            pi64 = (int64_t*)va_arg( args, int64_t * );
            *pi64 = p_sys->i_pcr;
            return VLC_SUCCESS;

        case DEMUX_SET_TIME:
938
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
939
            i64 = (int64_t)va_arg( args, int64_t );
940
            i64 = i64 *AV_TIME_BASE / 1000000 + i_start_time;
Gildas Bazin's avatar
 
Gildas Bazin committed
941

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
942
            msg_Warn( p_demux, "DEMUX_SET_TIME: %"PRId64, i64 );
Gildas Bazin's avatar
 
Gildas Bazin committed
943

944
            if( av_seek_frame( p_sys->ic, -1, i64, AVSEEK_FLAG_BACKWARD ) < 0 )
Gildas Bazin's avatar
 
Gildas Bazin committed
945 946 947
            {
                return VLC_EGENERIC;
            }
948
            ResetTime( p_demux, i64 - i_start_time );
Gildas Bazin's avatar
 
Gildas Bazin committed
949
            return VLC_SUCCESS;
950
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
951

952 953 954 955 956 957 958 959
        case DEMUX_HAS_UNSUPPORTED_META:
        {
            bool *pb_bool = (bool*)va_arg( args, bool* );
            *pb_bool = true;
            return VLC_SUCCESS;
        }