Table of contents - CD Audio ( CDDA)

[giorgio-2]

I would like to know if  is there a possibility to read Table of
contents ( audio tracks only ) of a Audio CD using gstreamer.
I want to know how many Audio  tracks are present in the CD and their
main informations ( length ,name etc..).
Thanks in advance for any suggestion.
Giorgio.

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[Tim-Philipp Müller-2]

On Tue, 2012-06-26 at 14:03 +0200, giorgio wrote:

Hi Giorgio,

> I would like to know if  is there a possibility to read Table of
> contents ( audio tracks only ) of a Audio CD using gstreamer.
> I want to know how many Audio  tracks are present in the CD and their
> main informations ( length ,name etc..).

Sure. If your audio cd source (like cdparanoiasrc) derives from
GstCddaBaseSrc [0], you can just poke at the GstCddaBaseSrcTrack
*tracks array in the structure directly.

Alternatively, you can do a duration query in "track" format
(GstFormat), that will give you the number of tracks. You would have to
switch to (do a seek in "track" format) each track in turn to get the
track-specific tags, or do a duration query in TIME format for each
track after switching to it. This info is all in the tracks array as
well though.

In 0.11/1.0 we'll make Audio CD sources announce the TOC using the
GstToc API.

Cheers
 -Tim


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[giorgio-2]

Thanks, Tim,
do you have a simple example?
My skill on gstreamer is very low,
I should like to have something to use as guide.
Giorgio.



Il giorno mar, 26/06/2012 alle 13.34 +0100, Tim-Philipp Müller ha
scritto:

> On Tue, 2012-06-26 at 14:03 +0200, giorgio wrote:
>
> Hi Giorgio,
>
> > I would like to know if  is there a possibility to read Table of
> > contents ( audio tracks only ) of a Audio CD using gstreamer.
> > I want to know how many Audio  tracks are present in the CD and their
> > main informations ( length ,name etc..).
>
> Sure. If your audio cd source (like cdparanoiasrc) derives from
> GstCddaBaseSrc [0], you can just poke at the GstCddaBaseSrcTrack
> *tracks array in the structure directly.
>
> Alternatively, you can do a duration query in "track" format
> (GstFormat), that will give you the number of tracks. You would have to
> switch to (do a seek in "track" format) each track in turn to get the
> track-specific tags, or do a duration query in TIME format for each
> track after switching to it. This info is all in the tracks array as
> well though.
>
> In 0.11/1.0 we'll make Audio CD sources announce the TOC using the
> GstToc API.
>
> Cheers
>  -Tim
>
>
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

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