[vlc-devel] [PATCH 1/4] vlc_stream.h: add some STREAM_GET_* requests
remi at remlab.net
Mon Apr 16 10:13:09 CEST 2012
On Wed, 11 Apr 2012 22:54:39 +0200, Frederic YHUEL <fyhuel at viotech.net>
> Thanks for your input Laurent!
> On Wed, Apr 11, 2012 at 8:40 PM, Laurent Aimar <fenrir at elivagar.org>
>> On Wed, Apr 11, 2012 at 04:15:17PM +0200, Frédéric Yhuel wrote:
>>> @@ -111,6 +111,12 @@ enum stream_query_e
>>> /* XXX only data read through stream_Read/Block will be recorded
>>> STREAM_SET_RECORD_STATE, /**< arg1=bool, arg2=const char
>>> *psz_ext (if arg1 is true) res=can fail */
>>> + /* Used in Smooth Streaming */
>>> + STREAM_GET_TIME_SCALE, /**< arg1=uint64_t *
>>> res=cannot fail */
>>> + STREAM_GET_ITRACKS, /**< arg1=unsigned * (Get the number of
>>> tracks) res=cannot fail */
>>> + STREAM_GET_TRACK, /**< arg1=uint16_t, arg2=mp4_track_t *
>>> res=can fail */
>>> + STREAM_GET_FMT, /**< arg1=uint16_t, arg2=uint16_t,
>>> arg3=es_format_t * res=can fail */
>> I don't think that adding such mp4 private accesses to the global
>> API is a good idea. I am not sure how best you could avoid that, but
>> creating an access_demux would be simpler?
> Probably, I need to think about it!
That goes back to the original discussion on the DASH filter. If you have
a byte stream, then a stream filter is nice. That implies byte offset
For time-based or chapter-based seeking, then demux or access_demux is
required. Namely a demux is needed if there is some kind of manifest (that
does not need to be reloaded ever). Otherwise, if there is only a URL, then
it's an access_demux.
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