DASH and SS manifests define potentially useful information
that isn't present in the actual media streams. Primarily
the representation id, but bitrate, fps and language may
also be defined only at the manifest leve. This change merges
the information into the sample format that's propagated to
the renderers.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=124225175
This removes "message sent on dead thread" warnings in nearly
all cases, and guarantees delivery of load cancelation to event
listeners.
Issue: #426
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=123957691
- Remove need for SampleSources to ref ChunkSources.
- Correctly propagate errors loading manifests through
ChunkSource components.
- Fix some misc warnings.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=123732918
Aside from deleting code, this change (a) adds retry
functionality for initial manifest fetches, (b) uses
the same loader for the utc timing fetch as for the
manifest.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=123634812
This change moves generally useful functionality (load timing
and fatal error propagation) inside of Loader, so that callers
don't have to duplicate effort.
The change also makes use of generics so that the callback
receives a Loadable with a more specific type.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=123304369
This field will allow us to flexibly add information provided by the container
or streaming manifests related to the tracks that must be selected.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=122559858
Now [DASH/SS]SampleSource instances are creating ChunkTrackStream
instances dynamically, it makes sense to always require that the
min retry count be injected from that level. The SampleSource
implementations should also use the retry count when refreshing
the manifest.
The option to configure the retry count on the SampleSource classes
will arrive in a later CL.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=122424774
- This means DrmInitData is propagated through sample queues (i.e.
is effectively attached to every sample, so we can see when it
changes when reading from the queue).
- It also allows different DrmInitData per track, which is possible
in muxed MKV/WebM, and per Representation for DASH, although we
wont be able to seamlessly adapt in the latter case.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=121821928
- This moves to a single DrmInitData implementation that supports
both specific and universal UUID matching. You can also do a
combination of the two, which was not previously possible.
- The object model is simplified as a result. This is a precursor
to a change where DrmInitData will be included directly in the
Format to enable key rotation.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=121472592
This will be required for key rotation to work, since
we'll need a way to determine whether or not the init
data has changed.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=121018211
Dash/SS SampleSources now instantiate ChunkSource and
ChunkSampleSource (renamed to ChunkTrackStream) instances
on demand as tracks are enabled. The TrackGroups exposed
by the DASH/SS SampleSources are now constructed at the
top level.
Note that this change resolves the TODOs at the top of the
ChunkSource classes, allowing multiple adaptation sets of
the same type.
Next steps will include:
- Bring back UTC timing element support for DASH, which
will be an extra request during preparation in the DASH
SampleSource.
- Simplification of manifest fetching to use a Loader directly
in the two top level SampleSource classes. ManifestFetcher
should eventually go away once HLS no longer needs it.
- Eventually, some consolidation between DASH/SS. There's a
lot of common code there now.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=121001777
Parse the duration of the media directly from the manifest
in the DASH/SS SampleSource implementations.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=121001296
This change pulls manifest refresh responsibility up to the
top level Dash/SS SampleSource implementations. In following
steps more of the manifest processing logic will be pulled
up (e.g. extracting track groups from the initial manifest),
which will allow ChunkSampleSource/ChunkSource instances to
be further simplified and created on demand.
I've avoided moving/renaming anything for now, so as to keep
it fairly easy to review.
Note that this change does the TODO related to releasing the
manifest fetchers.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=121001139
This is a mechanical change. The two new SampleSource classes
are forked from MultiSampleSource, with the logic that previously
was in the demo app's SourceBuilder methods copied into the
corresponding constructors. Subsequent steps will:
1. Pull the initial manifest processing from DashChunkSource and
SmoothStreamingChunkSource into the new SampleSource classes.
2. Remove the construction of ChunkSampleSource instances from
the constructors, instead instantiating children only as needed
when tracks are enabled.
3. Simplify ChunkSampleSource down into a ChunkTrackStream object.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=121001021
At this point the only reason preventing the chunk package
from using RollingSampleBuffer directly, rather than
DefaultTrackOutput, is that the latter maintains the largest
parsed timestamp. This will be pushed inside the former in
the next CL. Following that, splicing logic will also be
pushed inside of RollingSampleBuffer, and HLS will be moved
over to using a single RollingSampleBuffer per track, with
the splicing done inline.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=120206658
This is the first step toward merging of RollingSampleBuffer
and DefaultTrackOutput, which is a precursor to removing some
indirection for DASH/SS playbacks, and to moving HLS playbacks
to use a single output buffer per track (with inline splicing).
Where this is heading is that sample format changes will
eventually be attached to samples in the rolling buffer. This
will eliminate the need for piping sample formats around the
edges of the rolling buffer (e.g. via redirection in
ChunkExtractorWrapper and BaseMediaChunk.getSampleFormat).
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=120123093
- Use same constant for unknown/unset microsecond times/durations.
- Change constant values to be nowhere near the "normal" range.
- Misc cleanup.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119944019
This is in preparation for the player knowing about the live
window, at which point only correct playback positions will be
passed into ChunkSource implementations. Note that both
implementations bound the chunk index within range in case of,
for example, off-by-one errors caused by very recent manifest
updates.
This will temporarily cause live playbacks to always start at
the beginning of the current live window (we'll be trying to
play from t=0, which will be adjusted to the start of the live
window as a result of the bounding).
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119733559
Both of these features are being promoted to first class
citizens in V2 (multi-period support will be handled via
playlists, seeking-in-window will be handled by exposing
the window/timeline from the player and via the normal
seek API). For now, it's much easier to continue the
refactoring process with the features removed.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119518675
This was made possible by the simplification of how DASH/SS
chunk replacement works. It is also a step towards eliminating
continueBuffering(), since continueBuffering() calls are no
longer relied upon to resume a backed off load.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=118774865
DASH + SS previously had a ridiculously complicated chunk
replacement mechanism in resumeFromBackOff. It also didn't
allow replacement of the first media chunk in the queue,
even though it's possible to remove it in the case that no
corresponding samples have been consumed.
This CL moves DASH + SS to the simpler model used in the
HLS implementation, where the chunk source has a single
opportunity to cancel (and hence later replace) the chunk
when the load error occurs. With this change comes the
ability to replace the first media chunk in the queue in
all cases where it's possible to do so.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=118573418
In V2 we'll at some point start using DataSource factories
for creating DataSource instances. If there are two DataSource
interfaces this gets unnecessarily awkward.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=118470751
This is needed to support fully demuxed audio in HLS. For the
sample I have the video (only) variant still declares an AAC
stream. I suspect there's at least one toolchain out there that
hardcodes H264 and AAC streams in TS output.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117224224
Failing to parse a UUID from a ContentProtection should only
result in filtering if there was actually a cenc:pssh element
there for us to get it from.
Issue: #1256
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117220417
Set the duration to the sum of the final period's start
+ duration (if available) if MPD@mediaPresentationDuration
isn't set in the manifest.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117141391
Handle minor timing difference between the different media content
and the available range values as specified in the MPD.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117127112
This change replaces TrackGroup[] with TrackGroupArray. This is
to allow equality based hashCode and equals implementations.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=115563146
- Format can represent both container and sample formats.
If a container contains a single track (as is true in
DASH and SmoothStreaming) then the container Format can
also contain sufficient information about the samples
to allow for track selection. This avoids the Format to
MediaFormat conversions that we were previously doing in
ChunkSource implementations.
- One important result of this change is that adaptive
format evaluation and static format selection now use the
same format objects, which is a whole lot less confusing
for someone who wants to implement both initial selection
and subsequent adaptation logic. It's not in the V2 doc,
but it may well make sense if the TrackSelector not only
selects the tracks to enable for an adaptive playback, but
also injects a FormatEvaluator when enabling them that will
control the subsequent adaptive selections. That would make
it so that all format selection logic originates from the
same place.
- As part of this change, the adaptiveX variables are removed
from the format object; they don't really correspond to a
single format. This also saves on having to inject the max
video dimensions through a bunch of classes.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=114546777
Duration was originally included in MediaFormat to match the
framework class, but it actually doesn't make much sense. In
many containers there's no such thing as per-stream duration,
and in any case we don't really care. Setting the duration on
each format required excessive piping.
This change moves duration into SeekMap instead, which seems
to make a lot more sense because it's at the container level,
and because being able to seek is generally couplied with
knowing how long the stream is.
This change is also a step toward merging Format and MediaFormat
into a single class (because Format doesn't have a duration),
which is coming soon.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=114428500
