asf.c 34.3 KB
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/*****************************************************************************
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 * asf.c: asf muxer module for vlc
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 *****************************************************************************
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 * Copyright (C) 2003-2004 VideoLAN
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 * $Id$
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 *
 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
#include <stdlib.h>

#include <vlc/vlc.h>
#include <vlc/input.h>
#include <vlc/sout.h>

#include "codecs.h"

/*****************************************************************************
 * Module descriptor
 *****************************************************************************/
static int  Open   ( vlc_object_t * );
static void Close  ( vlc_object_t * );

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#define SOUT_CFG_PREFIX "sout-asf-"

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#define TITLE_TEXT N_("Title")
#define TITLE_LONGTEXT N_("Allows you to define the title that will be put " \
                          "in ASF comments.")
#define AUTHOR_TEXT N_("Author")
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#define AUTHOR_LONGTEXT N_("Allows you to define the author that will be put "\
                           "in ASF comments.")
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#define COPYRIGHT_TEXT N_("Copyright")
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#define COPYRIGHT_LONGTEXT N_("Allows you to define the copyright string " \
                              "that will be put in ASF comments.")
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#define COMMENT_TEXT N_("Comment")
#define COMMENT_LONGTEXT N_("Allows you to define the comment that will be " \
                            "put in ASF comments.")
#define RATING_TEXT N_("Rating")
#define RATING_LONGTEXT N_("Allows you to define the \"rating\" that will " \
                           "be put in ASF comments.")

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vlc_module_begin();
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    set_description( _("ASF muxer") );
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    set_capability( "sout mux", 5 );
    add_shortcut( "asf" );
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    add_shortcut( "asfh" );
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    set_callbacks( Open, Close );
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    add_string( SOUT_CFG_PREFIX "title", "", NULL, TITLE_TEXT, TITLE_LONGTEXT,
                                 VLC_TRUE );
    add_string( SOUT_CFG_PREFIX "author",   "", NULL, AUTHOR_TEXT,
                                 AUTHOR_LONGTEXT, VLC_TRUE );
    add_string( SOUT_CFG_PREFIX "copyright","", NULL, COPYRIGHT_TEXT,
                                 COPYRIGHT_LONGTEXT, VLC_TRUE );
    add_string( SOUT_CFG_PREFIX "comment",  "", NULL, COMMENT_TEXT,
                                 COMMENT_LONGTEXT, VLC_TRUE );
    add_string( SOUT_CFG_PREFIX "rating",  "", NULL, RATING_TEXT,
                                 RATING_LONGTEXT, VLC_TRUE );
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vlc_module_end();

/*****************************************************************************
 * Locales prototypes
 *****************************************************************************/
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static const char *ppsz_sout_options[] = {
    "title", "author", "copyright", "comment", "rating", NULL
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};
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static int Control  ( sout_mux_t *, int, va_list );
static int AddStream( sout_mux_t *, sout_input_t * );
static int DelStream( sout_mux_t *, sout_input_t * );
static int Mux      ( sout_mux_t * );
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typedef struct
{
    uint32_t v1; /* le */
    uint16_t v2; /* le */
    uint16_t v3; /* le */
    uint8_t  v4[8];
} guid_t;

typedef struct
{
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    int          i_id;
    int          i_cat;
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    /* codec information */
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    uint16_t     i_tag;     /* for audio */
    vlc_fourcc_t i_fourcc;  /* for video */
    char         *psz_name; /* codec name */

    int          i_sequence;

    int          i_extra;
    uint8_t     *p_extra;
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} asf_track_t;

struct sout_mux_sys_t
{
    guid_t          fid;    /* file id */
    int             i_packet_size;
    int64_t         i_packet_count;
    mtime_t         i_dts_first;
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    mtime_t         i_dts_last;
    int64_t         i_bitrate;
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    int             i_track;
    asf_track_t     track[128];

    vlc_bool_t      b_write_header;

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    block_t         *pk;
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    int             i_pk_used;
    int             i_pk_frame;
    mtime_t         i_pk_dts;
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    vlc_bool_t      b_asf_http;
    int             i_seq;
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    /* meta data */
    char            *psz_title;
    char            *psz_author;
    char            *psz_copyright;
    char            *psz_comment;
    char            *psz_rating;
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};

static int MuxGetStream( sout_mux_t *, int *pi_stream, mtime_t *pi_dts );

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static block_t *asf_header_create( sout_mux_t *, vlc_bool_t b_broadcast );
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static block_t *asf_packet_create( sout_mux_t *, asf_track_t *, block_t * );
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static block_t *asf_stream_end_create( sout_mux_t *);
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typedef struct
{
    int      i_buffer_size;
    int      i_buffer;
    uint8_t  *p_buffer;
} bo_t;

static void bo_init     ( bo_t *, uint8_t *, int  );
static void bo_add_u8   ( bo_t *, uint8_t  );
static void bo_addle_u16( bo_t *, uint16_t );
static void bo_addle_u32( bo_t *, uint32_t );
static void bo_addle_u64( bo_t *, uint64_t );
static void bo_add_mem  ( bo_t *, uint8_t *, int );

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static void bo_addle_str16( bo_t *, char * );
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/*****************************************************************************
 * Open:
 *****************************************************************************/
static int Open( vlc_object_t *p_this )
{
    sout_mux_t     *p_mux = (sout_mux_t*)p_this;
    sout_mux_sys_t *p_sys;
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    vlc_value_t    val;
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    int i;

    msg_Dbg( p_mux, "Asf muxer opened" );
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    sout_CfgParse( p_mux, SOUT_CFG_PREFIX, ppsz_sout_options, p_mux->p_cfg );
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    p_mux->pf_control   = Control;
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    p_mux->pf_addstream = AddStream;
    p_mux->pf_delstream = DelStream;
    p_mux->pf_mux       = Mux;

    p_mux->p_sys = p_sys = malloc( sizeof( sout_mux_sys_t ) );
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    p_sys->b_asf_http = p_mux->psz_mux && !strcmp( p_mux->psz_mux, "asfh" );
    if( p_sys->b_asf_http )
    {
        msg_Dbg( p_mux, "creating asf stream to be used with mmsh" );
    }
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    p_sys->pk = NULL;
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    p_sys->i_pk_used    = 0;
    p_sys->i_pk_frame   = 0;
    p_sys->i_dts_first  = -1;
    p_sys->i_dts_last   = 0;
    p_sys->i_bitrate    = 0;
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    p_sys->i_seq        = 0;
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    p_sys->b_write_header = VLC_TRUE;
    p_sys->i_track = 1;
    p_sys->i_packet_size = 4096;
    p_sys->i_packet_count= 0;
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    /* Generate a random fid */
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    srand( mdate() & 0xffffffff );
    p_sys->fid.v1 = 0xbabac001;
    p_sys->fid.v2 = ( (uint64_t)rand() << 16 ) / RAND_MAX;
    p_sys->fid.v3 = ( (uint64_t)rand() << 16 ) / RAND_MAX;
    for( i = 0; i < 8; i++ )
    {
        p_sys->fid.v4[i] = ( (uint64_t)rand() << 8 ) / RAND_MAX;
    }
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    /* Meta data */
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    var_Get( p_mux, SOUT_CFG_PREFIX "title", &val );
    p_sys->psz_title = val.psz_string;

    var_Get( p_mux, SOUT_CFG_PREFIX "author", &val );
    p_sys->psz_author = val.psz_string;

    var_Get( p_mux, SOUT_CFG_PREFIX "copyright", &val );
    p_sys->psz_copyright = val.psz_string;

    var_Get( p_mux, SOUT_CFG_PREFIX "comment", &val );
    p_sys->psz_comment = val.psz_string;

    var_Get( p_mux, SOUT_CFG_PREFIX "rating", &val );
    p_sys->psz_rating = val.psz_string;

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    msg_Dbg( p_mux, "meta data: title='%s' author='%s' copyright='%s' "
             "comment='%s' rating='%s'",
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             p_sys->psz_title, p_sys->psz_author, p_sys->psz_copyright,
             p_sys->psz_comment, p_sys->psz_rating );
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    return VLC_SUCCESS;
}

/*****************************************************************************
 * Close:
 *****************************************************************************/
static void Close( vlc_object_t * p_this )
{
    sout_mux_t     *p_mux = (sout_mux_t*)p_this;
    sout_mux_sys_t *p_sys = p_mux->p_sys;
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    block_t  *out;
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    int i;

    msg_Dbg( p_mux, "Asf muxer closed" );

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    if( ( out = asf_stream_end_create( p_mux ) ) )
    {
        sout_AccessOutWrite( p_mux->p_access, out );
    }

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    /* rewrite header */
    if( !sout_AccessOutSeek( p_mux->p_access, 0 ) )
    {
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        out = asf_header_create( p_mux, VLC_FALSE );
        sout_AccessOutWrite( p_mux->p_access, out );
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    }

    for( i = 1; i < p_sys->i_track; i++ )
    {
        free( p_sys->track[i].p_extra );
    }
    free( p_sys );
}

/*****************************************************************************
 * Capability:
 *****************************************************************************/
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static int Control( sout_mux_t *p_mux, int i_query, va_list args )
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{
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    sout_mux_sys_t *p_sys = p_mux->p_sys;
    vlc_bool_t *pb_bool;
    char **ppsz;

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    switch( i_query )
    {
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       case MUX_CAN_ADD_STREAM_WHILE_MUXING:
           pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
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           if( p_sys->b_asf_http ) *pb_bool = VLC_TRUE;
           else *pb_bool = VLC_FALSE;
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           return VLC_SUCCESS;

       case MUX_GET_ADD_STREAM_WAIT:
           pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
           *pb_bool = VLC_FALSE;
           return VLC_SUCCESS;

       case MUX_GET_MIME:
           ppsz = (char**)va_arg( args, char ** );
           if( p_sys->b_asf_http )
               *ppsz = strdup( "video/x-ms-asf-stream" );
           else
               *ppsz = strdup( "video/x-ms-asf" );
           return VLC_SUCCESS;

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        default:
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            return VLC_EGENERIC;
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    }
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}

/*****************************************************************************
 * AddStream:
 *****************************************************************************/
static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
{
    sout_mux_sys_t   *p_sys = p_mux->p_sys;
    asf_track_t      *tk;
    bo_t             bo;

    msg_Dbg( p_mux, "adding input" );
    if( p_sys->i_track > 127 )
    {
        msg_Dbg( p_mux, "cannot add this track (too much track)" );
        return VLC_EGENERIC;
    }

    tk = p_input->p_sys = &p_sys->track[p_sys->i_track];
    tk->i_id  = p_sys->i_track;
    tk->i_cat = p_input->p_fmt->i_cat;
    tk->i_sequence = 0;

    switch( tk->i_cat )
    {
        case AUDIO_ES:
        {
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            int i_blockalign = p_input->p_fmt->audio.i_blockalign;
            int i_bitspersample = 0;
            int i_extra = 0;
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            switch( p_input->p_fmt->i_codec )
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            {
                case VLC_FOURCC( 'a', '5', '2', ' ' ):
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                    tk->i_tag = WAVE_FORMAT_A52;
                    tk->psz_name = "A/52";
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                    break;
                case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
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#if 1
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                    tk->psz_name = "MPEG Audio Layer 3";
                    tk->i_tag = WAVE_FORMAT_MPEGLAYER3;
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                    i_blockalign = 1;
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                    i_extra = 12;
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                    break;
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#else
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                    tk->psz_name = "MPEG Audio Layer 1/2";
                    tk->i_tag = WAVE_FORMAT_MPEG;
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                    i_blockalign = 1;
                    i_extra = 22;
                    break;
#endif
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                case VLC_FOURCC( 'w', 'm', 'a', '1' ):
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                    tk->psz_name = "Windows Media Audio 1";
                    tk->i_tag = WAVE_FORMAT_WMA1;
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                    break;
                case VLC_FOURCC( 'w', 'm', 'a', '2' ):
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                    tk->psz_name = "Windows Media Audio 2";
                    tk->i_tag = WAVE_FORMAT_WMA2;
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                    break;
                case VLC_FOURCC( 'w', 'm', 'a', '3' ):
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                    tk->psz_name = "Windows Media Audio 3";
                    tk->i_tag = WAVE_FORMAT_WMA3;
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                    break;
                    /* raw codec */
                case VLC_FOURCC( 'u', '8', ' ', ' ' ):
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                    tk->psz_name = "Raw audio 8bits";
                    tk->i_tag = WAVE_FORMAT_PCM;
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                    i_blockalign= p_input->p_fmt->audio.i_channels;
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                    i_bitspersample = 8;
                    break;
                case VLC_FOURCC( 's', '1', '6', 'l' ):
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                    tk->psz_name = "Raw audio 16bits";
                    tk->i_tag = WAVE_FORMAT_PCM;
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                    i_blockalign= 2 * p_input->p_fmt->audio.i_channels;
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                    i_bitspersample = 16;
                    break;
                case VLC_FOURCC( 's', '2', '4', 'l' ):
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                    tk->psz_name = "Raw audio 24bits";
                    tk->i_tag = WAVE_FORMAT_PCM;
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                    i_blockalign= 3 * p_input->p_fmt->audio.i_channels;
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                    i_bitspersample = 24;
                    break;
                case VLC_FOURCC( 's', '3', '2', 'l' ):
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                    tk->psz_name = "Raw audio 32bits";
                    tk->i_tag = WAVE_FORMAT_PCM;
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                    i_blockalign= 4 * p_input->p_fmt->audio.i_channels;
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                    i_bitspersample = 32;
                    break;
                default:
                    return VLC_EGENERIC;
            }

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            tk->i_extra = sizeof( WAVEFORMATEX ) +
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                          p_input->p_fmt->i_extra + i_extra;
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            tk->p_extra = malloc( tk->i_extra );
            bo_init( &bo, tk->p_extra, tk->i_extra );
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            bo_addle_u16( &bo, tk->i_tag );
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            bo_addle_u16( &bo, p_input->p_fmt->audio.i_channels );
            bo_addle_u32( &bo, p_input->p_fmt->audio.i_rate );
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            bo_addle_u32( &bo, p_input->p_fmt->i_bitrate / 8 );
            bo_addle_u16( &bo, i_blockalign );
            bo_addle_u16( &bo, i_bitspersample );
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            if( p_input->p_fmt->i_extra > 0 )
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            {
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                bo_addle_u16( &bo, p_input->p_fmt->i_extra );
                bo_add_mem  ( &bo, p_input->p_fmt->p_extra,
                              p_input->p_fmt->i_extra );
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            }
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            else
            {
                bo_addle_u16( &bo, i_extra );
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                if( tk->i_tag == WAVE_FORMAT_MPEGLAYER3 )
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                {
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                    msg_Dbg( p_mux, "adding mp3 header" );
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                    bo_addle_u16( &bo, 1 );     /* wId */
                    bo_addle_u32( &bo, 2 );     /* fdwFlags */
                    bo_addle_u16( &bo, 1152 );  /* nBlockSize */
                    bo_addle_u16( &bo, 1 );     /* nFramesPerBlock */
                    bo_addle_u16( &bo, 1393 );  /* nCodecDelay */
                }
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                else if( tk->i_tag == WAVE_FORMAT_MPEG )
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                {
                    msg_Dbg( p_mux, "adding mp2 header" );
                    bo_addle_u16( &bo, 2 );     /* fwHeadLayer */
                    bo_addle_u32( &bo, p_input->p_fmt->i_bitrate );
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                    bo_addle_u16( &bo, p_input->p_fmt->audio.i_channels == 2 ?1:8 );
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                    bo_addle_u16( &bo, 0 );     /* fwHeadModeExt */
                    bo_addle_u16( &bo, 1 );     /* wHeadEmphasis */
                    bo_addle_u16( &bo, 16 );    /* fwHeadFlags */
                    bo_addle_u32( &bo, 0 );     /* dwPTSLow */
                    bo_addle_u32( &bo, 0 );     /* dwPTSHigh */
                }
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            }

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            if( p_input->p_fmt->i_bitrate > 24000 )
            {
                p_sys->i_bitrate += p_input->p_fmt->i_bitrate;
            }
            else
            {
                p_sys->i_bitrate += 512000;
            }
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            break;
        }
        case VIDEO_ES:
        {
            tk->i_extra = 11 + sizeof( BITMAPINFOHEADER ) +
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                          p_input->p_fmt->i_extra;
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            tk->p_extra = malloc( tk->i_extra );
            bo_init( &bo, tk->p_extra, tk->i_extra );
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            bo_addle_u32( &bo, p_input->p_fmt->video.i_width );
            bo_addle_u32( &bo, p_input->p_fmt->video.i_height );
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            bo_add_u8   ( &bo, 0x02 );  /* flags */
            bo_addle_u16( &bo, sizeof( BITMAPINFOHEADER ) +
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                               p_input->p_fmt->i_extra );
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            bo_addle_u32( &bo, sizeof( BITMAPINFOHEADER ) +
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                               p_input->p_fmt->i_extra );
            bo_addle_u32( &bo, p_input->p_fmt->video.i_width );
            bo_addle_u32( &bo, p_input->p_fmt->video.i_height );
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            bo_addle_u16( &bo, 1 );
            bo_addle_u16( &bo, 24 );
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            if( p_input->p_fmt->i_codec == VLC_FOURCC('m','p','4','v') )
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            {
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                tk->psz_name = "MPEG-4 Video";
                tk->i_fourcc = VLC_FOURCC( 'M', 'P', '4', 'S' );
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            }
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            else if( p_input->p_fmt->i_codec == VLC_FOURCC('D','I','V','3') )
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            {
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                tk->psz_name = "MSMPEG-4 V3 Video";
                tk->i_fourcc = VLC_FOURCC( 'M', 'P', '4', '3' );
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            }
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            else if( p_input->p_fmt->i_codec == VLC_FOURCC('D','I','V','2') )
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            {
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                tk->psz_name = "MSMPEG-4 V2 Video";
                tk->i_fourcc = VLC_FOURCC( 'M', 'P', '4', '2' );
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            }
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            else if( p_input->p_fmt->i_codec == VLC_FOURCC('D','I','V','1') )
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            {
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                tk->psz_name = "MSMPEG-4 V1 Video";
                tk->i_fourcc = VLC_FOURCC( 'M', 'P', 'G', '4' );
            }
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            else if( p_input->p_fmt->i_codec == VLC_FOURCC('W','M','V','1') )
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            {
                tk->psz_name = "Windows Media Video 1";
                tk->i_fourcc = VLC_FOURCC( 'W', 'M', 'V', '1' );
            }
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            else if( p_input->p_fmt->i_codec == VLC_FOURCC('W','M','V','2') )
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            {
                tk->psz_name = "Windows Media Video 2";
                tk->i_fourcc = VLC_FOURCC( 'W', 'M', 'V', '2' );
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            }
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            else if( p_input->p_fmt->i_codec == VLC_FOURCC('W','M','V','3') )
            {
                tk->psz_name = "Windows Media Video 3";
                tk->i_fourcc = VLC_FOURCC( 'W', 'M', 'V', '3' );
            }
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            else
            {
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                tk->psz_name = _("Unknown Video");
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                tk->i_fourcc = p_input->p_fmt->i_codec;
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            }
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            bo_add_mem( &bo, (uint8_t*)&tk->i_fourcc, 4 );
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            bo_addle_u32( &bo, 0 );
            bo_addle_u32( &bo, 0 );
            bo_addle_u32( &bo, 0 );
            bo_addle_u32( &bo, 0 );
            bo_addle_u32( &bo, 0 );
509
            if( p_input->p_fmt->i_extra > 0 )
510
            {
511
512
                bo_add_mem  ( &bo, p_input->p_fmt->p_extra,
                              p_input->p_fmt->i_extra );
513
514
            }

515
516
517
518
519
520
521
522
            if( p_input->p_fmt->i_bitrate > 50000 )
            {
                p_sys->i_bitrate += p_input->p_fmt->i_bitrate;
            }
            else
            {
                p_sys->i_bitrate += 1000000;
            }
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
            break;
        }
        default:
            msg_Err(p_mux, "unhandled track type" );
            return VLC_EGENERIC;
    }

    p_sys->i_track++;
    return VLC_SUCCESS;
}

/*****************************************************************************
 * DelStream:
 *****************************************************************************/
static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
{
    msg_Dbg( p_mux, "removing input" );
    return VLC_SUCCESS;
}

/*****************************************************************************
 * Mux:
 *****************************************************************************/
546
static int Mux( sout_mux_t *p_mux )
547
548
549
550
551
{
    sout_mux_sys_t *p_sys = p_mux->p_sys;

    if( p_sys->b_write_header )
    {
552
        block_t *out = asf_header_create( p_mux, VLC_TRUE );
553

554
        out->i_flags |= BLOCK_FLAG_HEADER;
555
556
557
558
559
560
561
562
563
564
565
        sout_AccessOutWrite( p_mux->p_access, out );

        p_sys->b_write_header = VLC_FALSE;
    }

    for( ;; )
    {
        sout_input_t  *p_input;
        asf_track_t   *tk;
        int           i_stream;
        mtime_t       i_dts;
566
567
        block_t *data;
        block_t *pk;
568
569
570
571
572
573
574
575
576
577
578

        if( MuxGetStream( p_mux, &i_stream, &i_dts ) )
        {
            /* not enough data */
            return VLC_SUCCESS;
        }

        if( p_sys->i_dts_first < 0 )
        {
            p_sys->i_dts_first = i_dts;
        }
579
580
581
582
        if( p_sys->i_dts_last < i_dts )
        {
            p_sys->i_dts_last = i_dts;
        }
583
584
585
586

        p_input = p_mux->pp_inputs[i_stream];
        tk      = (asf_track_t*)p_input->p_sys;

587
        data = block_FifoGet( p_input->p_fifo );
588
589
590
591
592
593
594
595
596
597

        if( ( pk = asf_packet_create( p_mux, tk, data ) ) )
        {
            sout_AccessOutWrite( p_mux->p_access, pk );
        }
    }

    return VLC_SUCCESS;
}

598
static int MuxGetStream( sout_mux_t *p_mux, int *pi_stream, mtime_t *pi_dts )
599
600
601
602
603
604
605
606
{
    mtime_t i_dts;
    int     i_stream;
    int     i;

    for( i = 0, i_dts = 0, i_stream = -1; i < p_mux->i_nb_inputs; i++ )
    {
        sout_input_t  *p_input = p_mux->pp_inputs[i];
607
        block_t *p_data;
608
609
610
611
612
613
614
615
616
617
618
619
620

        if( p_input->p_fifo->i_depth <= 0 )
        {
            if( p_input->p_fmt->i_cat == AUDIO_ES ||
                p_input->p_fmt->i_cat == VIDEO_ES )
            {
                /* We need that audio+video fifo contain at least 1 packet */
                return VLC_EGENERIC;
            }
            /* SPU */
            continue;
        }

621
        p_data = block_FifoShow( p_input->p_fifo );
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
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645
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650
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653
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655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
        if( i_stream == -1 ||
            p_data->i_dts < i_dts )
        {
            i_stream = i;
            i_dts    = p_data->i_dts;
        }
    }

    *pi_stream = i_stream;
    *pi_dts = i_dts;

    return VLC_SUCCESS;
}

/****************************************************************************
 * Asf header construction
 ****************************************************************************/

/****************************************************************************
 * Buffer out
 ****************************************************************************/
static void bo_init( bo_t *p_bo, uint8_t *p_buffer, int i_size )
{
    p_bo->i_buffer_size = i_size;
    p_bo->i_buffer = 0;
    p_bo->p_buffer = p_buffer;
}
static void bo_add_u8( bo_t *p_bo, uint8_t i )
{
    if( p_bo->i_buffer < p_bo->i_buffer_size )
    {
        p_bo->p_buffer[p_bo->i_buffer] = i;
    }
    p_bo->i_buffer++;
}
static void bo_addle_u16( bo_t *p_bo, uint16_t i )
{
    bo_add_u8( p_bo, i &0xff );
    bo_add_u8( p_bo, ( ( i >> 8) &0xff ) );
}
static void bo_addle_u32( bo_t *p_bo, uint32_t i )
{
    bo_addle_u16( p_bo, i &0xffff );
    bo_addle_u16( p_bo, ( ( i >> 16) &0xffff ) );
}
static void bo_addle_u64( bo_t *p_bo, uint64_t i )
{
    bo_addle_u32( p_bo, i &0xffffffff );
    bo_addle_u32( p_bo, ( ( i >> 32) &0xffffffff ) );
}

static void bo_add_mem( bo_t *p_bo, uint8_t *p_mem, int i_size )
{
    int i_copy = __MIN( i_size, p_bo->i_buffer_size - p_bo->i_buffer );

    if( i_copy > 0 )
    {
679
        memcpy( &p_bo->p_buffer[p_bo->i_buffer], p_mem, i_copy );
680
681
682
683
    }
    p_bo->i_buffer += i_size;
}

684
685
686
687
688
static void bo_addle_str16( bo_t *bo, char *str )
{
    bo_addle_u16( bo, strlen( str ) + 1 );
    for( ;; )
    {
689
        uint16_t c = (uint8_t)*str++;
690
        bo_addle_u16( bo, c );
691
        if( c == '\0' ) break;
692
693
694
    }
}

695
696
697
698
static void bo_addle_str16_nosize( bo_t *bo, char *str )
{
    for( ;; )
    {
699
        uint16_t c = (uint8_t)*str++;
700
        bo_addle_u16( bo, c );
701
        if( c == '\0' ) break;
702
703
704
    }
}

705
706
707
708
709
710
711
712
713
714
715
716
717
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
749
750
751
752
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
/****************************************************************************
 * guid
 ****************************************************************************/
static void bo_add_guid( bo_t *p_bo, const guid_t *id )
{
    int i;
    bo_addle_u32( p_bo, id->v1 );
    bo_addle_u16( p_bo, id->v2 );
    bo_addle_u16( p_bo, id->v3 );
    for( i = 0; i < 8; i++ )
    {
        bo_add_u8( p_bo, id->v4[i] );
    }
}

static const guid_t asf_object_header_guid =
{
    0x75B22630,
    0x668E,
    0x11CF,
    { 0xA6,0xD9, 0x00,0xAA,0x00,0x62,0xCE,0x6C }
};
static const guid_t asf_object_data_guid =
{
    0x75B22636,
    0x668E,
    0x11CF,
    { 0xA6,0xD9, 0x00,0xAA,0x00,0x62,0xCE,0x6C }
};
static const guid_t asf_object_file_properties_guid =
{
    0x8cabdca1,
    0xa947,
    0x11cf,
    { 0x8e,0xe4, 0x00,0xC0,0x0C,0x20,0x53,0x65 }

};
static const guid_t asf_object_stream_properties_guid =
{
    0xB7DC0791,
    0xA9B7,
    0x11CF,
    { 0x8E,0xE6, 0x00,0xC0,0x0C,0x20,0x53,0x65 }

};
static const guid_t asf_object_header_extention_guid =
{
   0x5FBF03B5,
   0xA92E,
   0x11CF,
   { 0x8E,0xE3, 0x00,0xC0,0x0C,0x20,0x53,0x65 }
};
static const guid_t asf_object_stream_type_audio =
{
    0xF8699E40,
    0x5B4D,
    0x11CF,
    { 0xA8,0xFD, 0x00,0x80,0x5F,0x5C,0x44,0x2B }
};

static const guid_t asf_object_stream_type_video =
{
    0xbc19efc0,
    0x5B4D,
    0x11CF,
    { 0xA8,0xFD, 0x00,0x80,0x5F,0x5C,0x44,0x2B }
};

static const guid_t asf_guid_audio_conceal_none =
{
    0x20FB5700,
    0x5B55,
    0x11CF,
    { 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B }
};
static const guid_t asf_guid_video_conceal_none =
{
    0x20FB5700,
    0x5B55,
    0x11CF,
    { 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B }
};
static const guid_t asf_guid_reserved_1 =
{
    0xABD3D211,
    0xA9BA,
    0x11cf,
    { 0x8E, 0xE6,0x00, 0xC0, 0x0C ,0x20, 0x53, 0x65 }
};
794
static const guid_t asf_object_codec_comment_guid =
795
796
797
798
799
800
{
    0x86D15240,
    0x311D,
    0x11D0,
    { 0xA3, 0xA4, 0x00, 0xA0, 0xC9, 0x03, 0x48, 0xF6 }
};
801
static const guid_t asf_object_codec_comment_reserved_guid =
802
803
804
805
806
807
{
    0x86D15241,
    0x311D,
    0x11D0,
    { 0xA3, 0xA4, 0x00, 0xA0, 0xC9, 0x03, 0x48, 0xF6 }
};
808
809
810
811
812
813
814
static const guid_t asf_object_content_description_guid =
{
    0x75B22633,
    0x668E,
    0x11CF,
    { 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c }
};
815

816
817
818
819
820
821
822
823
824
825
static void asf_chunk_add( bo_t *bo,
                           int i_type, int i_len, int i_flags, int i_seq )
{
    bo_addle_u16( bo, i_type );
    bo_addle_u16( bo, i_len + 8 );
    bo_addle_u32( bo, i_seq );
    bo_addle_u16( bo, i_flags );
    bo_addle_u16( bo, i_len + 8 );
}

826
static block_t *asf_header_create( sout_mux_t *p_mux, vlc_bool_t b_broadcast )
827
828
829
830
{
    sout_mux_sys_t *p_sys = p_mux->p_sys;
    asf_track_t    *tk;

831
    mtime_t i_duration = 0;
832
    int i_size;
833
    int i_ci_size;
834
    int i_cd_size = 0;
835
    block_t *out;
836
837
    bo_t bo;
    int i;
838

839
840
    msg_Dbg( p_mux, "Asf muxer creating header" );

841
842
843
    if( p_sys->i_dts_first > 0 )
    {
        i_duration = p_sys->i_dts_last - p_sys->i_dts_first;
844
        if( i_duration < 0 ) i_duration = 0;
845
846
    }

847
848
    /* calculate header size */
    i_size = 30 + 104 + 46;
849
    i_ci_size = 44;
850
851
852
    for( i = 1; i < p_sys->i_track; i++ )
    {
        i_size += 78 + p_sys->track[i].i_extra;
853
854
855
856
857
858
859
860
861
        i_ci_size += 8 + 2 * strlen( p_sys->track[i].psz_name );
        if( p_sys->track[i].i_cat == AUDIO_ES )
        {
            i_ci_size += 4;
        }
        else if( p_sys->track[i].i_cat == VIDEO_ES )
        {
            i_ci_size += 6;
        }
862
    }
863

864
865
866
867
868
869
870
871
872
    if( *p_sys->psz_title || *p_sys->psz_author || *p_sys->psz_copyright ||
        *p_sys->psz_comment || *p_sys->psz_rating )
    {
        i_cd_size = 34 + 2 * ( strlen( p_sys->psz_title ) + 1 +
                             strlen( p_sys->psz_author ) + 1 +
                             strlen( p_sys->psz_copyright ) + 1 +
                             strlen( p_sys->psz_comment ) + 1 +
                             strlen( p_sys->psz_rating ) + 1 );
    }
873

874
    i_size += i_ci_size + i_cd_size;
875

876
877
    if( p_sys->b_asf_http )
    {
878
        out = block_New( p_mux, i_size + 50 + 12 );
879
880
881
882
883
        bo_init( &bo, out->p_buffer, i_size + 50 + 12 );
        asf_chunk_add( &bo, 0x4824, i_size + 50, 0xc00, p_sys->i_seq++ );
    }
    else
    {
884
        out = block_New( p_mux, i_size + 50 );
885
886
        bo_init( &bo, out->p_buffer, i_size + 50 );
    }
887

888
889
890
    /* header object */
    bo_add_guid ( &bo, &asf_object_header_guid );
    bo_addle_u64( &bo, i_size );
891
    bo_addle_u32( &bo, 2 + p_sys->i_track - 1 );
892
893
894
895
896
897
898
899
900
    bo_add_u8   ( &bo, 1 );
    bo_add_u8   ( &bo, 2 );

    /* sub object */

    /* file properties */
    bo_add_guid ( &bo, &asf_object_file_properties_guid );
    bo_addle_u64( &bo, 104 );
    bo_add_guid ( &bo, &p_sys->fid );
901
    bo_addle_u64( &bo, i_size + 50 + p_sys->i_packet_count *
902
                                p_sys->i_packet_size ); /* file size */
903
    bo_addle_u64( &bo, 0 );                 /* creation date */
904
    bo_addle_u64( &bo, b_broadcast ? 0xffffffffLL : p_sys->i_packet_count );
905
906
    bo_addle_u64( &bo, i_duration * 10 );   /* play duration (100ns) */
    bo_addle_u64( &bo, i_duration * 10 );   /* send duration (100ns) */
907
    bo_addle_u64( &bo, 3000 );              /* preroll duration (ms) */
908
909
910
    bo_addle_u32( &bo, b_broadcast ? 0x01 : 0x00);      /* flags */
    bo_addle_u32( &bo, p_sys->i_packet_size );  /* packet size min */
    bo_addle_u32( &bo, p_sys->i_packet_size );  /* packet size max */
911
    bo_addle_u32( &bo, p_sys->i_bitrate );      /* maxbitrate */
912
913
914
915
916
917
918
919

    /* header extention */
    bo_add_guid ( &bo, &asf_object_header_extention_guid );
    bo_addle_u64( &bo, 46 );
    bo_add_guid ( &bo, &asf_guid_reserved_1 );
    bo_addle_u16( &bo, 6 );
    bo_addle_u32( &bo, 0 );

920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
    /* content description header */
    if( i_cd_size > 0 )
    {
        bo_add_guid ( &bo, &asf_object_content_description_guid );
        bo_addle_u64( &bo, i_cd_size );
        bo_addle_u16( &bo, 2 * strlen( p_sys->psz_title ) + 2 );
        bo_addle_u16( &bo, 2 * strlen( p_sys->psz_author ) + 2 );
        bo_addle_u16( &bo, 2 * strlen( p_sys->psz_copyright ) + 2 );
        bo_addle_u16( &bo, 2 * strlen( p_sys->psz_comment ) + 2 );
        bo_addle_u16( &bo, 2 * strlen( p_sys->psz_rating ) + 2 );

        bo_addle_str16_nosize( &bo, p_sys->psz_title );
        bo_addle_str16_nosize( &bo, p_sys->psz_author );
        bo_addle_str16_nosize( &bo, p_sys->psz_copyright );
        bo_addle_str16_nosize( &bo, p_sys->psz_comment );
        bo_addle_str16_nosize( &bo, p_sys->psz_rating );
    }

938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
    /* stream properties */
    for( i = 1; i < p_sys->i_track; i++ )
    {
        tk = &p_sys->track[i];

        bo_add_guid ( &bo, &asf_object_stream_properties_guid );
        bo_addle_u64( &bo, 78 + tk->i_extra );
        if( tk->i_cat == AUDIO_ES )
        {
            bo_add_guid( &bo, &asf_object_stream_type_audio );
            bo_add_guid( &bo, &asf_guid_audio_conceal_none );
        }
        else if( tk->i_cat == VIDEO_ES )
        {
            bo_add_guid( &bo, &asf_object_stream_type_video );
            bo_add_guid( &bo, &asf_guid_video_conceal_none );
        }
        bo_addle_u64( &bo, 0 );         /* time offset */
        bo_addle_u32( &bo, tk->i_extra );
        bo_addle_u32( &bo, 0 );         /* 0 */
        bo_addle_u16( &bo, tk->i_id );  /* stream number */
        bo_addle_u32( &bo, 0 );
        bo_add_mem  ( &bo, tk->p_extra, tk->i_extra );
    }

963
    /* Codec Infos */
964
    bo_add_guid ( &bo, &asf_object_codec_comment_guid );
965
    bo_addle_u64( &bo, i_ci_size );
966
    bo_add_guid ( &bo, &asf_object_codec_comment_reserved_guid );
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
    bo_addle_u32( &bo, p_sys->i_track - 1 );
    for( i = 1; i < p_sys->i_track; i++ )
    {
        tk = &p_sys->track[i];

        bo_addle_u16( &bo, tk->i_id );
        bo_addle_str16( &bo, tk->psz_name );
        bo_addle_u16( &bo, 0 );
        if( tk->i_cat == AUDIO_ES )
        {
            bo_addle_u16( &bo, 2 );
            bo_addle_u16( &bo, tk->i_tag );
        }
        else if( tk->i_cat == VIDEO_ES )
        {
            bo_addle_u16( &bo, 4 );
            bo_add_mem  ( &bo, (uint8_t*)&tk->i_fourcc, 4 );

        }
    }

988
989
990
991
992
993
994
995
996
997
998
999
1000
    /* data object */
    bo_add_guid ( &bo, &asf_object_data_guid );
    bo_addle_u64( &bo, 50 + p_sys->i_packet_count * p_sys->i_packet_size );
    bo_add_guid ( &bo, &p_sys->fid );
    bo_addle_u64( &bo, p_sys->i_packet_count );
    bo_addle_u16( &bo, 0x101 );

    return out;
}

/****************************************************************************
 *
 ****************************************************************************/
1001
static block_t *asf_packet_create( sout_mux_t *p_mux,
1002
                                   asf_track_t *tk, block_t *data )
1003
1004
1005
{
    sout_mux_sys_t *p_sys = p_mux->p_sys;

1006
    int     i_data = data->i_buffer;
1007
1008
    int     i_pos  = 0;
    uint8_t *p_data= data->p_buffer;
1009
    block_t *first = NULL, **last = &first;
1010
    int     i_preheader = p_sys->b_asf_http ? 12 : 0;
1011
1012
1013

    while( i_pos < i_data )
    {
1014
1015
        bo_t bo;
        int i_payload;
1016
1017
1018

        if( p_sys->pk == NULL )
        {
1019
            p_sys->pk = block_New( p_mux, p_sys->i_packet_size + i_preheader );
1020
            /* reserve 14 bytes for the packet header */
1021
            p_sys->i_pk_used = 14 + i_preheader;
1022
1023
1024
1025
1026
            p_sys->i_pk_frame = 0;
            p_sys->i_pk_dts = data->i_dts;
        }

        bo_init( &bo, &p_sys->pk->p_buffer[p_sys->i_pk_used],
1027
                 p_sys->i_packet_size - p_sys->i_pk_used );
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044

        /* add payload (header size = 17) */
        i_payload = __MIN( i_data - i_pos,
                           p_sys->i_packet_size - p_sys->i_pk_used - 17 );
        bo_add_u8   ( &bo, 0x80 | tk->i_id );
        bo_add_u8   ( &bo, tk->i_sequence );
        bo_addle_u32( &bo, i_pos );
        bo_add_u8   ( &bo, 0x08 );  /* flags */
        bo_addle_u32( &bo, i_data );
        bo_addle_u32( &bo, ( data->i_dts - p_sys->i_dts_first )/ 1000 );
        bo_addle_u16( &bo, i_payload );
        bo_add_mem  ( &bo, &p_data[i_pos], i_payload );
        i_pos += i_payload;
        p_sys->i_pk_used += 17 + i_payload;

        p_sys->i_pk_frame++;

1045
        if( p_sys->i_pk_used + 17 >= p_sys->i_packet_size )
1046
1047
1048
1049
        {
            /* not enough data for another payload, flush the packet */
            int i_pad = p_sys->i_packet_size - p_sys->i_pk_used;

1050
1051
1052
1053
            bo_init( &bo, p_sys->pk->p_buffer, 14 + i_preheader );

            if( p_sys->b_asf_http )
            {
1054
1055
                asf_chunk_add( &bo, 0x4424, p_sys->i_packet_size,
                               0x00, p_sys->i_seq++);
1056
            }
1057
1058
1059
1060
1061
            bo_add_u8   ( &bo, 0x82 );
            bo_addle_u16( &bo, 0 );
            bo_add_u8( &bo, 0x11 );
            bo_add_u8( &bo, 0x5d );
            bo_addle_u16( &bo, i_pad );
1062
            bo_addle_u32( &bo, ( p_sys->i_pk_dts - p_sys->i_dts_first )/1000 );
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
            bo_addle_u16( &bo, 0 * data->i_length / 1000 );
            bo_add_u8( &bo, 0x80 | p_sys->i_pk_frame );

            /* append the packet */
            *last = p_sys->pk;
            last  = &p_sys->pk->p_next;

            p_sys->pk = NULL;

            p_sys->i_packet_count++;
        }
    }

    tk->i_sequence++;
1077
    block_Release( data );
1078
1079
1080
1081

    return first;
}

1082
static block_t *asf_stream_end_create( sout_mux_t *p_mux )
1083
1084
1085
{
    sout_mux_sys_t *p_sys = p_mux->p_sys;

1086
    block_t *out = NULL;
1087
    bo_t bo;
1088

1089
1090
    if( p_sys->b_asf_http )
    {
1091
        out = block_New( p_mux, 12 );
1092
1093
1094
        bo_init( &bo, out->p_buffer, 12 );
        asf_chunk_add( &bo, 0x4524, 0, 0x00, p_sys->i_seq++ );
    }
1095

1096
1097
    return out;
}