[Step 4 - Partial, of []
- The capabilities checks previously performed in VideoFormatSelectorUtil
are now performed in MediaCodecVideoTrackRenderer. This means they'll be
useful for non-chunk use cases (e.g. when using ExtractorSampleSource).
- Added capabilities checks for audio in MediaCodecAudioTrackRenderer. We
didn't check audio capabilities previously.
- Added functionality to allow a TrackRenderer to indicate the extent of
its adaptive support.
The idea here is that a TrackSelector (to be introduced) will have access to:
(a) TrackGroups from the SampleSource that indicate whether they support
adaptive playbacks and the formats of each individual track.
(b) TrackRenderers that indicate whether they support adaptive playbacks as
well as how capable they are of rendering formats of individual tracks.
This is everything that a TrackSelector needs from the player components in
order to decide how to wire things up. Note that a TrackSelector may opt to
treat FORMAT_EXCEEDS_CAPABILITIES as FORMAT_HANDLED at its own risk, if it
thinks that it (or the user) knows better. This is a request that we've seen
from third parties for better handling cases where capabilities aren't
accurately reported by the underlying platform.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=114427428
GitHub note - Apologies for the cryptic change descriptions,
they relate to a design doc that's not externally visible.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=113043764
When a seek is performed, renderers currently perform the
actions that they need to take in two places: Some changes
are performed in seekTo implementations. Other changes are
performed when discontinuities are read from the source.
In HLS we need to perform what is effectively a seek
originating in the source. To support this, this CL allows
discontinuities read from the source to modify the playback
position. All actions that renderers perform as a result
of a seek are moved to be performed when a discontinuity is
received.
Best way to understand CL:
- Look at SampleSource interface change and then at the
concrete implementations, to make sure they've been
changed properly.
- Look at SampleSourceTrackRenderer change.
- Look at concrete renderers. The general pattern is that
code previously performed in seekTo and READ_DISCONTINUITY
is merged into onDiscontinuity().
Note: This will be further untangled in V2.
Issue #676
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=112720746
This allows implementation and injection of custom MediaCodecSelector
instances. By injecting a custom selector, it's possible for applications
to exert more control over which decoder(s) they instantiate. For example,
applications can force use of a software decoder.
GitHub Issue #938
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=110369810
- Use allowDefaults to fix crash if params are passed without
the speed being explicitly set.
- Allow null to be passed to clear previously set params.
- Clarify in doc that the passed params shouldn't be modified
after they're passed.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=109591580
Remove MPEG TS stream filtering based on AudioCapabilities.
Pass AudioCapabilities to MediaCodecAudioTrackRenderer so it can choose between
passthrough/raw and decoding for AC-3 tracks.
- Generalize rendererEnabledFlags to be selected track indices through
ExoPlayerImpl/ExoPlayerImplInternal.
- Selecting an out-of-bound track index (e.g. -1) is equivalent to
disabling a renderer prior to the generalization.
- A prepared TrackRenderer that exposes 0 tracks is equivalent to a
TrackRenderer in the STATE_IGNORE state prior to the generalization.
Issue #514.
1. Remove requirement for TrackRenderer implementations to report
current position, unless they are time sources.
2. Expose whether renderers have media to play. The immediate benefit
of this is to solve the referenced GitHub issue, and also to only
display the appropriate Audio/Video/Text buttons in the demo app
for the media being played. This is also a natural step toward
multi-track support.
Github issue: #541
The OMX component needs to be configured with a format that has a
MIME type of audio/raw. Remove Ac3PassthroughAudioTrackRenderer,
which is no longer used.
- Target 4x the minimum specified by the framework.
- Impose a minimum duration (250ms).
- Impose a maximum duration (750ms, or the minimum
specified by the framework if that's larger).
I've removed the ability to specify the multiplication
factor, since the underlying implementation is getting more
complicated, and we should really be able to figure this out
internally.
AudioTrack contains the portions of MediaCodecAudioTrackRenderer that handle the
platform AudioTrack instance, including synchronization (playback position
smoothing), non-blocking writes and releasing.
This refactoring should not affect the behavior of audio playback, and is in
preparation for adding an Ac3PassthroughAudioTrackRenderer that will use the
AudioTrack.
Propagate elapsedRealtimeUs to the video renderer. This allows
the renderer to calculate and adjust for the elapsed time since
the start of the current rendering loop. Typically this is <2ms,
but there situations where it can go higher (normally when the
video renderer ends up processing more than 1 output buffer in
a single loop).
Also made variable naming more consistent throughout the package.
- Use native frame release timing in video renderer for
smoother video playback.
- Avoid unnecessary memory copy steps in audio renderer.
- Use non-blocking AudioTrack API.
- Bring back requirement for the first video frame to be rendered
before isReady returns true, *unless* we've deduced that the
upstream source is serving multiple renderers.
- Ditto for requiring that the audio track has some buffered data.
- cache ref didn't work because it referred to a private variable
(which isn't documented) from a public interface definition
(which is). Meaning the Javadoc generator was trying to link
to documentation that didn't exist.
- Make MediaCodecTrackRenderer.isReady more permissive.
This largely fixes#21
- Bring WebmExtractor closer to FragmentedMp4Extractor.
The two will probably be placed under a common interface
fairly soon, which will allow significant code
deduplication.
AudioTrack time will go out of sync if the decodeOnly flag
is set of arbitrary samples (as opposed to just those following
a seek). It's a pretty obscure case and it would be weird for
anyone to do it, but we should be robust against it anyway.
