real.c

VLC Player Source Code

                *pi64 = (int64_t)( 1000.0 * p_sys->i_our_duration * stream_Tell( p_demux->s ) / i64 );
                return VLC_SUCCESS;
            }

            *pi64 = 0;
            return VLC_EGENERIC;

        case DEMUX_SET_POSITION:
            f = (double) va_arg( args, double );
            i64 = (int64_t) ( stream_Size( p_demux->s ) * f );

            if ( p_sys->i_index_offset == 0 && i64 != 0 )
            {
                msg_Err(p_demux,"Seek No Index Real File failed!" );
                return VLC_EGENERIC; // no index!
            }
            if ( i64 == 0 )
            {
                /* it is a rtsp stream , it is specials in access/rtsp/... */
                msg_Dbg(p_demux, "Seek in real rtsp stream!");
                p_sys->i_pcr = (int64_t)1000 * ( p_sys->i_our_duration * f  );

                es_out_Control( p_demux->out, ES_OUT_RESET_PCR , p_sys->i_pcr );
                p_sys->b_seek = 1;

                return stream_Seek( p_demux->s, p_sys->i_pcr );
            }

            if ( p_sys->i_index_offset > 0 )
            {
                p_index = p_sys->p_index;
                while( p_index->file_offset !=0 )
                {
                    if ( p_index->file_offset > i64 )
                    {
                        msg_Dbg( p_demux, "Seek Real find! %d %d %d",
                                 p_index->time_offset, p_index->file_offset,
                                 (uint32_t) i64 );
                        if ( p_index != p_sys->p_index ) p_index --;
                        i64 = p_index->file_offset;
                        break;
                    }
                    p_index++;
                }

                p_sys->i_pcr = 1000 * (int64_t) p_index->time_offset;

                es_out_Control( p_demux->out, ES_OUT_RESET_PCR , p_sys->i_pcr );

                return stream_Seek( p_demux->s, i64 );
            }
        case DEMUX_SET_TIME:
            i64 = (int64_t) va_arg( args, int64_t ) / 1000;

            p_index = p_sys->p_index;
            while( p_index->file_offset !=0 )
            {
                if ( p_index->time_offset > i64 )
                {
                    if ( p_index != p_sys->p_index )
                        p_index --;
                    i64 = p_index->file_offset;
                    break;
                }
                p_index++;
            }

            p_sys->i_pcr = 1000 * (int64_t) p_index->time_offset;
            es_out_Control( p_demux->out, ES_OUT_RESET_PCR , p_sys->i_pcr );

            return stream_Seek( p_demux->s, i64 );

        case DEMUX_GET_LENGTH:
            pi64 = (int64_t*)va_arg( args, int64_t * );
 
            /* the commented following lines are fen's implementation, which doesn't seem to
             * work for one reason or another -- FK */
            /*if( p_sys->i_mux_rate > 0 )
            {
                *pi64 = (int64_t)1000000 * ( stream_Size( p_demux->s ) / 50 ) / p_sys->i_mux_rate;
                return VLC_SUCCESS;
            }*/
            if( p_sys->i_our_duration > 0 )
            {
                /* our stored duration is in ms, so... */
                *pi64 = (int64_t)1000 * p_sys->i_our_duration;
 
                return VLC_SUCCESS;
            }
            *pi64 = 0;
            return VLC_EGENERIC;

        case DEMUX_GET_META:
        {
            vlc_meta_t *p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );

            /* the core will crash if we provide NULL strings, so check
             * every string first */
            if( p_sys->psz_title )
                vlc_meta_SetTitle( p_meta, p_sys->psz_title );
            if( p_sys->psz_artist )
                vlc_meta_SetArtist( p_meta, p_sys->psz_artist );
            if( p_sys->psz_copyright )
                vlc_meta_SetCopyright( p_meta, p_sys->psz_copyright );
            if( p_sys->psz_description )
                vlc_meta_SetDescription( p_meta, p_sys->psz_description );
            return VLC_SUCCESS;
        }

        case DEMUX_GET_FPS:
        default:
            return VLC_EGENERIC;
    }
    return VLC_EGENERIC;
}

/*****************************************************************************
 * ReadRealIndex:
 *****************************************************************************/

static void ReadRealIndex( demux_t *p_demux )
{
    demux_sys_t *p_sys = p_demux->p_sys;
    uint8_t       buffer[100];
    uint32_t      i_id;
    uint32_t      i_size;
    int           i_version;
    unsigned int  i;

    uint32_t      i_index_count;

    if ( p_sys->i_index_offset == 0 )
        return;

    stream_Seek( p_demux->s, p_sys->i_index_offset );

    if ( stream_Read( p_demux->s, buffer, 20 ) < 20 )
        return ;

    i_id = VLC_FOURCC( buffer[0], buffer[1], buffer[2], buffer[3] );
    i_size      = GetDWBE( &buffer[4] );
    i_version   = GetWBE( &buffer[8] );

    msg_Dbg( p_demux, "Real index %4.4s size=%d version=%d",
                 (char*)&i_id, i_size, i_version );

    if( (i_size < 20) && (i_id != VLC_FOURCC('I','N','D','X')) )
        return;

    i_index_count = GetDWBE( &buffer[10] );

    msg_Dbg( p_demux, "Real Index : num : %d ", i_index_count );

    if( i_index_count == 0 )
        return;

    if( GetDWBE( &buffer[16] ) > 0 )
        msg_Dbg( p_demux, "Real Index: Does next index exist? %d ",
                        GetDWBE( &buffer[16] )  );

    p_sys->p_index = 
            (rm_index_t *)malloc( sizeof( rm_index_t ) * (i_index_count+1) );
    if( p_sys->p_index == NULL )
    {
        msg_Err( p_demux, "Memory allocation error" ); 
        return;
    }

    memset( p_sys->p_index, 0, sizeof(rm_index_t) * (i_index_count+1) );

    for( i=0; i<i_index_count; i++ )
    {
        if( stream_Read( p_demux->s, buffer, 14 ) < 14 )
            return ;

        if( GetWBE( &buffer[0] ) != 0 )
        {
            msg_Dbg( p_demux, "Real Index: invaild version of index entry %d ",
                              GetWBE( &buffer[0] ) );
            return;
        }

        p_sys->p_index[i].time_offset = GetDWBE( &buffer[2] );
        p_sys->p_index[i].file_offset = GetDWBE( &buffer[6] );
        p_sys->p_index[i].frame_index = GetDWBE( &buffer[10] );
        msg_Dbg( p_demux, "Real Index: time %d file %d frame %d ",
                        p_sys->p_index[i].time_offset,
                        p_sys->p_index[i].file_offset,
                        p_sys->p_index[i].frame_index );

    }
}

/*****************************************************************************
 * HeaderRead:
 *****************************************************************************/
static int HeaderRead( demux_t *p_demux )
{
    demux_sys_t *p_sys = p_demux->p_sys;
    uint8_t header[100];    /* FIXME */

    uint32_t    i_id;
    uint32_t    i_size;
    int64_t     i_skip;
    int         i_version;
    p_sys->p_meta = vlc_meta_New();

    for( ;; )
    {
        /* Read the header */
        if( stream_Read( p_demux->s, header, 10 ) < 10 )
        {
            return VLC_EGENERIC;
        }
        i_id        = VLC_FOURCC( header[0], header[1], header[2], header[3] );
        i_size      = GetDWBE( &header[4] );
        i_version   = GetWBE( &header[8] );

        msg_Dbg( p_demux, "object %4.4s size=%d version=%d",
                 (char*)&i_id, i_size, i_version );

        if( i_size < 10 && i_id != VLC_FOURCC('D','A','T','A') )
        {
            msg_Dbg( p_demux, "invalid size for object %4.4s", (char*)&i_id );
            return VLC_EGENERIC;
        }
        i_skip = i_size - 10;

        if( i_id == VLC_FOURCC('.','R','M','F') )
        {
            if( stream_Read( p_demux->s, header, 8 ) < 8 ) return VLC_EGENERIC;
            msg_Dbg( p_demux, "    - file version=0x%x num headers=%d",
                     GetDWBE( &header[0] ), GetDWBE( &header[4] ) );

            i_skip -= 8;
        }
        else if( i_id == VLC_FOURCC('P','R','O','P') )
        {
            int i_flags;

            if( stream_Read(p_demux->s, header, 40) < 40 ) return VLC_EGENERIC;

            msg_Dbg( p_demux, "    - max bitrate=%d avg bitrate=%d",
                     GetDWBE(&header[0]), GetDWBE(&header[4]) );
            msg_Dbg( p_demux, "    - max packet size=%d avg bitrate=%d",
                     GetDWBE(&header[8]), GetDWBE(&header[12]) );
            msg_Dbg( p_demux, "    - packets count=%d", GetDWBE(&header[16]) );
            msg_Dbg( p_demux, "    - duration=%d ms", GetDWBE(&header[20]) );
            msg_Dbg( p_demux, "    - preroll=%d ms", GetDWBE(&header[24]) );
            msg_Dbg( p_demux, "    - index offset=%d", GetDWBE(&header[28]) );
            msg_Dbg( p_demux, "    - data offset=%d", GetDWBE(&header[32]) );
            msg_Dbg( p_demux, "    - num streams=%d", GetWBE(&header[36]) );
 
            /* set the duration for export in control */
            p_sys->i_our_duration = (int)GetDWBE(&header[20]);
 
            p_sys->i_index_offset = GetDWBE(&header[28]);

            i_flags = GetWBE(&header[38]);
            msg_Dbg( p_demux, "    - flags=0x%x %s%s%s",
                     i_flags,
                     i_flags&0x0001 ? "PN_SAVE_ENABLED " : "",
                     i_flags&0x0002 ? "PN_PERFECT_PLAY_ENABLED " : "",
                     i_flags&0x0004 ? "PN_LIVE_BROADCAST" : "" );
            i_skip -= 40;
        }
        else if( i_id == VLC_FOURCC('C','O','N','T') )
        {
            int i_len;
            char *psz;
 
            /* FIXME FIXME: should convert from whatever the character
             * encoding of the input meta data is to UTF-8. */

            stream_Read( p_demux->s, header, 2 );
            if( ( i_len = GetWBE( header ) ) > 0 )
            {
                psz = malloc( i_len + 1 );
                stream_Read( p_demux->s, psz, i_len );
                psz[i_len] = '\0';

                EnsureUTF8( psz );
                msg_Dbg( p_demux, "    - title=`%s'", psz );
                p_sys->psz_title = psz;
                i_skip -= i_len;
            }
            i_skip -= 2;

            stream_Read( p_demux->s, header, 2 );
            if( ( i_len = GetWBE( header ) ) > 0 )
            {
                psz = malloc( i_len + 1 );
                stream_Read( p_demux->s, psz, i_len );
                psz[i_len] = '\0';

                EnsureUTF8( psz );
                msg_Dbg( p_demux, "    - author=`%s'", psz );
                p_sys->psz_artist = psz;
                i_skip -= i_len;
            }
            i_skip -= 2;

            stream_Read( p_demux->s, header, 2 );
            if( ( i_len = GetWBE( header ) ) > 0 )
            {
                psz = malloc( i_len + 1 );
                stream_Read( p_demux->s, psz, i_len );
                psz[i_len] = '\0';

                EnsureUTF8( psz );
                msg_Dbg( p_demux, "    - copyright=`%s'", psz );
                p_sys->psz_copyright = psz;
                i_skip -= i_len;
            }
            i_skip -= 2;

            stream_Read( p_demux->s, header, 2 );
            if( ( i_len = GetWBE( header ) ) > 0 )
            {
                psz = malloc( i_len + 1 );
                stream_Read( p_demux->s, psz, i_len );
                psz[i_len] = '\0';

                EnsureUTF8( psz );
                msg_Dbg( p_demux, "    - comment=`%s'", psz );
                p_sys->psz_description = psz;
                i_skip -= i_len;
            }
            i_skip -= 2;
        }
        else if( i_id == VLC_FOURCC('M','D','P','R') )
        {
            /* Media properties header */
            int  i_num;
            int  i_len;
            char *psz;

            if( stream_Read(p_demux->s, header, 30) < 30 ) return VLC_EGENERIC;
            i_num = GetWBE( header );
            msg_Dbg( p_demux, "    - id=0x%x", i_num );
            msg_Dbg( p_demux, "    - max bitrate=%d avg bitrate=%d",
                     GetDWBE(&header[2]), GetDWBE(&header[6]) );
            msg_Dbg( p_demux, "    - max packet size=%d avg packet size=%d",
                     GetDWBE(&header[10]), GetDWBE(&header[14]) );
            msg_Dbg( p_demux, "    - start time=%d", GetDWBE(&header[18]) );
            msg_Dbg( p_demux, "    - preroll=%d", GetDWBE(&header[22]) );
            msg_Dbg( p_demux, "    - duration=%d", GetDWBE(&header[26]) );
 
            i_skip -= 30;

            stream_Read( p_demux->s, header, 1 );
            if( ( i_len = header[0] ) > 0 )
            {
                psz = malloc( i_len + 1 );
                stream_Read( p_demux->s, psz, i_len );
                psz[i_len] = '\0';

                msg_Dbg( p_demux, "    - name=`%s'", psz );
                free( psz );
                i_skip -= i_len;
            }
            i_skip--;

            stream_Read( p_demux->s, header, 1 );
            if( ( i_len = header[0] ) > 0 )
            {
                psz = malloc( i_len + 1 );
                stream_Read( p_demux->s, psz, i_len );
                psz[i_len] = '\0';

                msg_Dbg( p_demux, "    - mime=`%s'", psz );
                free( psz );
                i_skip -= i_len;
            }
            i_skip--;

            stream_Read( p_demux->s, header, 4 );
            if( ( i_len = GetDWBE( header ) ) > 0 )
            {
                ReadCodecSpecificData( p_demux, i_len, i_num );
                stream_Read( p_demux->s, NULL, i_len );

                i_skip -= i_len;
            }
            i_skip -= 4;
        }
        else if( i_id == VLC_FOURCC('D','A','T','A') )