Re: [libdv-dev] dv_decode_full_frame

[salsaman <sal...@gm...>]

Apologies, replying to my own post again:

- I should have specified, what I am really interested in is the output from
dv_decode_full_audio(). The internal format of the dv clip is irrelevant to
me.


Regards,
Gabriel.
http://lives.sourceforge.net





On Mon, Oct 6, 2008 at 7:46 PM, salsaman <sal...@gm...> wrote:

>
>
> On Mon, Oct 6, 2008 at 7:41 PM, salsaman <sal...@gm...> wrote:
>
>>
>>
>> On Mon, Sep 22, 2008 at 2:40 PM, Dan Dennedy <da...@de...> wrote:
>>
>>> On Mon, Sep 22, 2008 at 10:08 AM, salsaman <sal...@gm...> wrote:
>>> > OK, thanks. Actually I already figured most of this out while I was
>>> waiting
>>> > for a reply !
>>> >
>>> > Now I would like to know how to get the audio values (rate, channels,
>>> sample
>>> > size, signedness and endianness).
>>>
>>> Please see the source code of playdv, kino, MLT, gstreamer, or other
>>> users of libdv.
>>>
>>
>> Thanks for the advice, but I was hoping for a bit less cryptic answer !
>>
>> What I found was generally:
>> - read in a full frame
>> - call dv_parse_audio_header()
>> - use functions like dv_get_frequency()
>>
>> However, a couple of things:
>>
>> - dv_parse_audio_header() appears to be in libdv and working, however it
>> is not defined in the header file.
>> - there do not seem to be functions to get the signedness, endianess or
>> interleaf (interleaved/non-interleaved) for the audio. Are these values
>> fixed in the dv standard ?
>>
>
> + 1 other point, I was presuming that dv_get_samples() would return the
> sample size in bits, however it appears to return the number of samples per
> frame (which can of course be calculated as frequency/fps, so not very
> useful).
>
> Should one assume that there are 16 bits per sample (or 20, 24 or 32).
>
> Sorry if my questions appear stupid, but I know nothing about dv format - I
> am approaching it from simply a programmatical point of view.
>
>
>
>
>>
>> Thanks in advance for any help, it is much appreciated.
>>
>> Gabriel.
>> http://lives.sourceforge.net
>>
>>
>