[dvblast-devel] biTStream & DVBlast releases

[Thomas Kernen]

Georgi,

Nice work on all those updates and most grateful for what you have done. 
Couple of questions/comments on the commits and general things that I 
think may still be missing. I realise that not all are directly related 
to your commits but since you provided a good summary of changes I'm 
following up this list:

- Which revisions of the various MPEG Systems and DVB specifications did 
you use to create the commits? I think it would be useful for future 
updates if you could reference the ETSI or Bluebook revisions somewhere 
so we can trace it when attempting to fix typos or add new descriptors.

- You mentioned complete support for various descriptors but I don't 
seem to find T2 delivery system descriptor in the commits. Did I miss it 
somewhere?

- Unless mistaken, none of the 3D (frame compatible) descriptors have 
been added either. Correct?

- Typo in descriptor 0x55: (Parental rating) not "Parential"

- In the MPEG systems stream type, 0x1C to 0x21 are missing.

Welcome to discuss these on or off list in case this is viewed as "noise".

Thomas


On 9/28/11 2:52 PM, Georgi Chorbadzhiyski wrote:
> Guys it seems that DVBlast 2.0 is blocked by the fact that biTSream has
> not seen official release (also I presume Christophe is very busy). I
> would like us to migrate biTSream to git (jb), apply my patch queue (see
> bellow), release biTSream 1.0 and then release DVBlast 2.0.
>
> My current patch queue for biTSream consists of 57 commits (~5000 added
> lines), that can be accessed at : git://github.com/gfto/bitstream.git dev
> or viewed in the web at : https://github.com/gfto/bitstream/compare/master...dev
> I can post patches here if you want 57 email patch bomb ;)
>
> In my opinion they complete MPEG/DVB SI support enough (more descriptors
> and tables than libdvbpsi, decoding and encoding examples) to justify 1.0
> release.
>
> My future plans for biTSream is to add more (all?) DVB descriptors and
> eventually split (opinions?) mpeg/psi{_print}.h and dvb/si{_print}.h into
> separate files for each table/descriptor with main files including them.
>
> The current pending biTStream commits are:
>
>> Change biTStream license to MIT license.
>
> As discussed by the authors.
>
>> Fix compiler warnings.
>> Remove unused variables.
>> Mark f_print with printf type attribute to allow format checking.
>
> Misc fixes.
>
>> dvb/si: Fix tdt_get_utc() function.
>
>> examples: Add "make local" for direct build against parent biTStream.
>> examples: Allow examples to link on OS X.
>
> Build extras.
>
>> mpeg/psi: Fix psi_set_version() function to set the two reserved bits.
>> dvb/si_print: Make text output of SDT services similar to XML output.
>
>> mpeg/psi: Complete support for descriptor 0x09 (CA).
>> dvb/si: Complete support for descriptor 0x48 (Service descriptor).
>> dvb/si: Complete support for descriptor 0x41 (Service list).
>> dvb/si: Complete support for descriptor 0x43 (Satellite delivery).
>> dvb/si: Complete support for descriptor 0x44 (Cable delivery).
>> dvb/si: Complete support for descriptor 0x5a (Terrestrial delivery).
>> dvb/si: Complete support for descriptor 0x5f (Private data specifier).
>
> Add missing init and set functions.
>
>> dvb/si: Fix generation of descriptor 0x46 (VBI teletext descriptor).
>
>> dvb/si: Print text value of audiotype in descriptor 0x0a.
>> dvb/si: Show text type for descriptor 0x46.
>> mpeg/psi: Add pmt_get_streamtype_txt() and use it in pmt_print().
>
> Misc fixes.
>
>> mpeg/psi: Add descriptor length to XML descriptor tag.
>> mpeg/psi: Add length and value to unknown descriptors printed as text.
>> Show descriptor name when printing in text format.
>
> Descriptor extras.
>
>> dvb/si: Add more helper functions to work with DVB time.
>
> Will be used in EIT and descriptors.
>
>> mpeg/psi: Complete support for CAT (Conditional Access Table).
>
> The commit description is:
>      - Set reserved bits to 1 in cat_init().
>      - Add cat_get_descs() that returns descriptor loop in user specified buffer.
>      - Add cat_set_descs() that puts descriptors loop back to CAT.
>      - Add cat_set_desclength()
>      - Use named constants in cat_alloc_descs().
>      - Add support for CAT in examples/dvb_print_si.
> ...
> Yes descriptor handling is different than other tables due to non-standard
> descriptor loop but with cat_get_descs() and cat_set_descs() it is not
> so bad.
>
>> dvb/si: Complete support for EIT (Event Information Table).
>> dvb/si: Complete support for TDT (Time and Date Table).
>> dvb/si: Complete support for TOT (Time offset table).
>
> Add missing set functions, print functions and examples/dvb_print_si
> support.
>
>> dvb/si: Add support for BAT (Bouquet Association Table).
>> dvb/si: Add support for RST (Running Status Table).
>> dvb/si: Add support for ST (Stuffing table).
>> dvb/si: Add support for DIT (Discontinuity Information Table).
>
> New tables.
>
>> mpeg/psi: Add support for descriptor 0x02 (Video stream).
>> mpeg/psi: Add support for descriptor 0x03 (Audio stream).
>> mpeg/psi: Add support for descriptor 0x04 (Hierarchy descriptor).
>> mpeg/psi: Add support for descriptor 0x06 (Data stream alignment).
>> mpeg/psi: Add support for descriptor 0x07 (Target Background Grid).
>> mpeg/psi: Add support for descriptor 0x08 (Video Window descriptor).
>> mpeg/psi: Add support for descriptor 0x0B (System clock).
>> mpeg/psi: Add support for descriptor 0x0C (Multiplex buffer).
>> mpeg/psi: Add support for descriptor 0x0D (Copyright descriptor).
>> mpeg/psi: Add support for descriptor 0x0E (Maximum bitrate).
>> mpeg/psi: Add support for descriptor 0x0F (Private data indicator).
>> mpeg/psi: Add support for descriptor 0x10 (Smoothing buffer).
>> mpeg/psi: Add support for descriptor 0x11 (STD descriptor).
>> mpeg/psi: Add support for descriptor 0x12 (IBP descriptor).
>
> With the above all MPEG defined descriptors are now supported.
>
>> dvb/si: Add support for descriptor 0x47 (Bouquet name).
>> dvb/si: Add support for descriptor 0x4d (Short event descriptor).
>> dvb/si: Add support for descriptor 0x4e (Extended event descriptor).
>> dvb/si: Add support for descriptor 0x52 (Stream identifier).
>> dvb/si: Add support for descriptor 0x54 (Content descriptor).
>> dvb/si: Add support for descriptor 0x55 (Parential rating descriptor).
>> dvb/si: Add support for descriptor 0x58 (Local time offset).
>
> Additional DVB descriptors support.
>
>> Add examples/dvb_gen_si
>
> An example program that demonstrates how to build tables and
> descriptors with biTSream.
>
>> Add myself as author.
>> Add TODO file.
>> README: List supported SI tables and MPEG/DVB descriptors.
>
> Self explanatory.
>