[linux-dvb] Re: AW: decode ts

[Holger Waechtler]

Andrea Gerardi wrote:




From: "Florian Schirmer" <[EMAIL PROTECTED]>
To: "'Andrea Gerardi'" 
<[EMAIL PROTECTED]>,<[EMAIL PROTECTED]>
Subject: AW: [linux-dvb] decode ts
Date: Thu, 27 Feb 2003 11:50:09 +0100

Hi,

>I need to decode ts information (such as sync byte, pid, transport error
>indicator and so on) from  a  unsigned char buffer[188] read from 
fd_demux;

>How could I do that? Thanks.

struct dvb_ts_header {

    u32 synch_byte: 8;
    u32 transport_error_indicator: 1;
    u32 payload_unit_start_indicator: 1;
    u32 transport_priority: 1;
    u32 PID: 13;
    u32 transport_scrambling_control: 2;
    u32 adaptation_field: 1;
    u32 payload: 1;
    u32 continuity_counter: 4;
};

Hope that helps.

Bye,
   Florian

Yes, but I don't know how parse this struct from previous buffer[188] 
read from fd_demuxv. Some mask to do that? Shift register or other 
method?Thanks.
just cast the struct pointer on your TS buffer. The entire MPEG spec is 
available as "ITU H.222" on the itu.org website. IIRC you'll have to 
register before you get access to the document area...

Holger



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