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Author SHA1 Message Date
Thiago Santos
1d28c574cf mssdemux: switch bitrates without switching pads 2013-05-07 21:09:48 -03:00
Andre Moreira Magalhaes (andrunko)
c8367a346c mssdemux: Check if pads are valid before removing. 2013-05-07 21:09:48 -03:00
Thiago Santos
bf0ea5d561 mssdemux: add a maximum error count for downloads 
mssdemux will tolerate a few download errors before emitting an
error message to the bus
 2013-05-07 21:09:48 -03:00
Thiago Santos
255eb4b161 mssdemux: use streams bitrate individually 
connection setup times seem to matter when measuring the download
rate of different streams. Streams with longer fragments have a
*relatively* lower connection setup time and achieve higher bitrates.

Using the average seems unfair here, so use each stream's measured bitrate
to select its best quality option.
 2013-05-07 21:09:48 -03:00
Thiago Santos
52c97834df mssdemux: use downloadbitrate utility for measuring bitrate 
downloadbitrate keeps a short history of bitrates and helps
tracking the current average download bitrate for mssdemux
 2013-05-07 21:09:48 -03:00
Andre Moreira Magalhaes (andrunko)
68308b3e54 mssdemux: Properly compute new bitrate and use bitrate_limit. 2013-05-07 21:09:48 -03:00
Andre Moreira Magalhaes (andrunko)
706b127daa mssdemux: Avoid a possible division by zero 2013-05-07 21:09:48 -03:00
Andre Moreira Magalhaes (andrunko)
28beb2ebd7 mssdemux: Add missing object param to GST_DEBUG|INFO_OBJECT calls 2013-05-07 21:09:48 -03:00
Thiago Santos
2219a3a1cc mssdemux: add bitrate-limit property 
It allows the plugin to use its own downloading bitrate measures
as a feedback to select the best streams bitrate for the current
network scenario
 2013-05-07 21:09:48 -03:00
Thiago Santos
a0a05b2941 mssdemux: use the shared uridownloader lib instead of an internal copy 2013-05-07 21:09:47 -03:00
Andre Moreira Magalhaes (andrunko)
12e9432847 mssdemux: Do not block on reset. 
We need to cancel the downloader for each stream before joining the main download task, otherwise
the download task will block until all the stream tasks finish.
 2013-05-07 21:09:47 -03:00
Louis-Francis Ratté-Boulianne
8ab3d09f81 mssdemux: handle FLUSH events by resetting the demuxer state 2013-05-07 21:09:47 -03:00
Louis-Francis Ratté-Boulianne
4a630f86f8 mssdemux: add conditions to prevent some crashes 2013-05-07 21:09:47 -03:00
Louis-Francis Ratté-Boulianne
218f2dee0c mssdemux: use standard glib methods 2013-05-07 21:09:47 -03:00
Louis-Francis Ratté-Boulianne
44d02efee0 mssdemux: fix some memory leaks and use right free function 2013-05-07 21:09:47 -03:00
Louis-Francis Ratté-Boulianne
b064910895 mssdemux: don't stop a task from inside the loop 
Only pause the task
 2013-05-07 21:09:47 -03:00
Louis-Francis Ratté-Boulianne
0239d77999 mssdemux: log manifest content for debugging 2013-05-07 21:09:47 -03:00
Louis-Francis Ratté-Boulianne
ea5f2718bf mssdemux: make codec private data from manifest attributes with AAC-LC 
When the codec is AAC-LC, some server implementation (e.g. Microsoft IIS) doesn't add the CodecPrivateData attribute. The element needs to re-create the codec data from the Quality Level attributes (channels and sampling rate).
 2013-05-07 21:09:47 -03:00
Louis-Francis Ratté-Boulianne
3ebb842388 mssdemux: only try to reload the manifest for live streams 
There is no way to know if a live stream is really finished, so try to reload the manifest and check if there are more fragments to download. Else just let know it's the EOS.
 2013-05-07 21:09:47 -03:00
Thiago Santos
7cb3a367f6 mssdemux: add some documentation 
Adds a little bit of docs explaning the internals of mssdemux
 2013-05-07 21:09:47 -03:00
Thiago Santos
46efc08809 mssdemux: add max-queue-size-buffers property 
Indicates how much buffering should be done internally in
mssdemux
 2013-05-07 21:09:47 -03:00
Thiago Santos
23ad760e3a mssdemux: stop tasks faster 
Issue a cancel to the downloaders so they stop earlier
 2013-05-07 21:09:47 -03:00
Thiago Santos
aa1713068a mssdemux: implement live streams handling 
Live streams force the demuxer to keep reloading the Manifest from
time to time, as the new fragments are being added as they are recorded.
The demuxer should also try to keep up and detect when it had to skip
fragments, marking the discont flag when that happens.

Curiously, the spec doesn't seem to mention when/how a live stream is supposed
to end, so keep trying downloads until the demuxer errors out.
 2013-05-07 21:05:12 -03:00
Thiago Santos
0704f15103 mssdemux: do not leak fragments 2013-05-07 21:05:12 -03:00
Thiago Santos
21872e78b8 mssdemux: fix issue on fragment timestamping parsing 
Use guint64 as the fragments can start at very high numbers,
specially on live streams
 2013-05-07 21:05:12 -03:00
Thiago Santos
0a4c077d2e mssdemux: error out when upstream doesn't implement URI query 
Error out when upstream doesn't answer to URI query and mssdemux
doesn't know the URI to fetch the fragments from
 2013-05-07 21:05:12 -03:00
Thiago Santos
1116eee681 mssdemux: push newsegments with same start time on bitrate switches 
This keeps sinks working in sync after a bitrate switch
 2013-05-07 21:05:12 -03:00
Thiago Santos
c2ae981e6d mssdemux: rewriting pad tasks so that buffers are pushed by ts order 
Use pad tasks to download data and an extra task that gets the earlier
buffer (with the smallest timestamp) and pushes on the corresponding
pad.

This prevents that the audio stream rushes ahead on buffers as its
fragments should be smaller
 2013-05-07 21:05:12 -03:00
Thiago Santos
fba63178fe mssdemux: some fixes to bitrate switching 
Removes a possible deadlock from bitrate switching when the pad
that requested the switch blocks on its pad-push
 2013-05-07 21:05:12 -03:00
Thiago Santos
6ca10e6c1b mssdemux: refactoring fragment download to its own function 
Makes code clearer and helps changing the download part of the
code to its own thread
 2013-05-07 21:05:11 -03:00
Thiago Santos
da4fad2f6f mssdemux: implement bitrate switching 
When connection-speed changes, signal that we might need a bitrate
switch. During the switch, a new pad group is added and the old one
is drained and removed.

New pads also need to push newsegments before starting to stream
 2013-05-07 21:05:11 -03:00
Thiago Santos
b9aec0ad0d mssdemux: add connection-speed property 
This speed limits the maximum bitrate of streams. Currently it
is only read when starting the pipeline, but it should be used
for switching bitrates during playback to adapt to network
changes.
 2013-05-07 21:05:11 -03:00
Thiago Santos
4b6900999a mssdemux: add an 'active' flag to manifest stream 
mssdemux should set the streams it has exposed as active so that
the manifest won't use the non-active streams to compute total bitrates
or providing fragments
 2013-05-07 21:05:11 -03:00
Thiago Santos
4726115e83 mssdemux: signal no-more-pads when finished exposing pads 
This makes decodebin/playbin mechanism know it can start playing
when buffering is finished
 2013-05-07 21:05:11 -03:00
Thiago Santos
eec8164d9c mssmanifest: Keep the stream qualities list sorted by bitrate 
This will help making adaptive streaming chose the best rate
for a particular connection speed
 2013-05-07 21:05:11 -03:00
Thiago Santos
013c11f7dd mssdemux: also consider fourcc AVC1 as H264 
H264 can be represented by both fourccs H264 and AVC1, use both.
 2013-05-07 21:05:11 -03:00
Thiago Santos
4293cfa763 mssmanifest: add support for VC-1 and WmaPro formats parsing 
VC-1 should map to WMV3 and WmaPro to WMA2
 2013-05-07 21:05:11 -03:00
Thiago Santos
3f2409f7e2 mssdemux: do not try to expose unknown streams 
When the stream can't have its caps detected, better not to expose it.
If no streams are known, signal an error about no playable streams to
the application
 2013-05-07 21:05:11 -03:00
Thiago Santos
b2ba96bb85 mssmanifest: do not set codec_data when it is empty 
Some manifests contain empty codec datas, better not set them
 2013-05-07 21:05:11 -03:00
Thiago Santos
9b3f67c5b0 mssdemux: set timestamp and duration to fragment buffers 
We can get those from the manifest and helps downstream to know
the fragment start time after a seeking operation
 2013-05-07 21:05:11 -03:00
Thiago Santos
ebd0862ac1 mssmanifest: fix typo 
Fix typo that was making the advance fragment function return a wrong
flow return in case it was already EOS
 2013-05-07 21:05:11 -03:00
Thiago Santos
cb7e3d1f3b mssdemux: initial implementation of seek event handling 
Adds basic handling for seek in time events. Needs to cooperate
with the downstream qtdemux so that it forwards the seeks and
the corresponding newsegments
 2013-05-07 21:05:11 -03:00
Thiago Santos
33d872916b mssdemux: handle src pad queries fir duration and latency 
Add a src pad query handler to get the duration from the manifest
and report it upstream.

Also adds a simple handler for latency queries
 2013-05-07 21:05:11 -03:00
Thiago Santos
0f1ef317f0 mssdemux: add some more error handling 
Post error in some more scenarios:
* when the manifest has no streams
* when getting the fragment url fails
 2013-05-07 21:05:11 -03:00
Thiago Santos
529b248a89 codecparsers: ensure the debug category is properly initialized 
The user of the library might not need to create a NalParser, so
the debug category needs to be initialized from other functions
as well if required.
 2013-05-07 21:05:10 -03:00
Thiago Santos
3f15c9b05a mssdemux: add timescale to the caps 
This is important for downstream to properly timestamp the samples

The default value is 10000000, but this can be set in the stream
or at the top-level manifest entry
 2013-05-07 21:05:10 -03:00
Thiago Santos
68d2719c9f mssdemux: parse the fps from h264 codec data if possible 
Use h264 codec parsing lib to extract the fps from the manifest's
codec data as it doesn't seem to provide it anywhere else
 2013-05-07 21:05:10 -03:00
Thiago Santos
af4c690995 mssdemux: correctly add h264 codec data to caps 
Need to construct an avcc atom from the codecdata read from MSS
manifests to make h264 decoders/parsers accept it
 2013-05-07 21:05:10 -03:00
Thiago Santos
edea61b758 mssdemux: add the correct caps to the outgoing stream 
mssdemux outputs a quicktime variant, named mss-fragment
 2013-05-07 21:05:10 -03:00
Thiago Santos
32d8a72bfc mssdemux: set caps to buffers before pushing 
Also update to the latest gstfragment API that provides
the fragment as a whole buffer.
 2013-05-07 21:05:10 -03:00