The response headers of the last load are available from the loading source
when creating media source events and can be easily forwarded.
Issue:#4361
Issue:#4615
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=209900693
The doc can be improved by enumerating and linking all possible values from
the interface doc.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=209772309
Apps targeting P or later now must request this permission in order to
use foreground services.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=209762160
Also remove NonNull, since we assume NonNull by default. Except
where explicitly overriding a method with NonNull annotated args,
in which case we're still expected to use it.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=209758204
Some tests were flaky because of the PlayUntilPosition action which called
player.setPlayWhenReady from the wrong thread. Also fixed some other misc
flakiness.
ExoPlayerTest seems to be non-flaky now (tested with 10000 runs).
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=209743076
They don't need to be accessed publicly and are can be moved into the
respective chunk sources. This is the same structure used for Dash.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=209507217
The MediaPeriodId with index is only properly defined together with a
timeline containing the index. Changing it to the period uid allows to use
the MediaPeriodId independent of the corresponding timeline.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=209430257
The reason for the change is that variable substititution requires
master playlist variable definitions at the moment of parsing.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=208997963
When playing a playlist where the exact maximum input size is known from the
container for each item, it may be necessary to recreate the decoder to increase
its maximum input buffer size at the point of transitioning from one item to the
next, which can make transitions non-seamless.
Scale up the initial video decoder maximum input size so playlist item
transitions with small increases in maximum sample size don't require
reinitialization.
Issue: #4510
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=208650244
Also fix an NPE in FfmpegAudioRenderer if sampleMimeType wasn't set.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=208230947
Also add support for parsing PlayReady DRM information
Issue:#4180
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=208094290
Future changes for checking codec capabilities will go in the renderer rather
than in the codec selector, so the codec selector only needs a MIME type as
before.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=208076716
Add automatic audio focus handling to SimpleExoPlayer. Audio focus
handling is an opt-in feature that can be requested by passing
the system's AudioManager and an AudioFocusConfiguration to
SimpleExoPlayer.setAudioFocusConfiguration.
When audio focus is being managed by SimpleExoPlayer, the player
will transparently handle pausing playback during
AUDIOFOCUS_LOSS_TRANSIENT, as well as lowering playback volume
during AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=208045732
Also locally cache length in BaseDataSource and use zero cost
castNonNull to make sure there's no performance regression.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=207715734
* Make dedicated section in RELEASENOTES
* Clean up AMR FACTORY
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=207550281
Lint likes all constants for an IntDef to be declared explicitly
in switch statements.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=207545682
Lint likes flags to be declared in this way, for safety, apparently
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=207545382
This CL adds support for seeking witin TS streams by using binary search. For
any seek timestamp, it tries to find the location in the stream where PCR
timestamp is close to the target timestamp, and return this position as the
seek position.
Github: #966.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=207529906
For now, just allow any prefix (and don't check the namespace).
Checking the namespace requires turning on the XmlPullParser
namespace awareness feature, but this can only be done before
parsing, and I think requires us to specify the namespace when
querying other attributes. This would also risk breaking services
who currently don't set namespaces correctly.
It's possible we'll run into similar issues with the few other
tags (e.g. mspr:pro). We should revisit enabling namespace
awareness if/when we see this.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=207526883
EventSampleStream.readData required eventStreamUpdatable to be
false for END_OF_STREAM to be returned, but it was only being
set to false when the manifest became static. This change also
sets it to false if the period is not the last one in a dynamic
manifest. It also renames it the parameter to appendable, since
that's what it really represents. Events may still be removed
from the start of the EventStream as the period starts moving
out of the live window.
Issue: #4492
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=207517265
- Use ConstantBitrateSeeker to implement seeking for ADTS format. Since most
ADTS streams are VBR, we use the average bitrate of the first 1000 frames as
the average bit rate.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=207509651
Currently, MetadataRetrieverImpl uses MediaCodecVideoRenderer to renderering
frames to capture. It suffers from 2 issues:
- MediaCodecVideoRenderer has a lot of logic to time frame release, including
drop frames if late or try to keep up with feeding speed etc... These are not
necessary at all for frame retrieval.
- MediaCodecVideoRenderer always tries to render 1 frame after video surface
update. This may some times lead to the wrong image being rendered for
MetadataRetriever.
This CL replaces this with a custom video renderer, that does not time frame
releases, and only render first frame after position reset / renderer
re-enabling.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=207276937
The error is spurious, and is due to an incorrect annotation in
the framework.
[Internal: b/32137960]
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=207234603
For background on why doing this works, see below. I don't want to change
how we get our Cipher instance in non-test code, since PKCS7 always works
on Android. It's only when the tests are running on a non-Android host
machine that they can fail. An alternative would be to make it an androidTest,
but androidTests are slow.
------
Background:
"While Java considers PKCS5 and PKCS7 padding to be the "same" (and
one should always use the string "AES/CBC/PKCS5Padding" because
"AES/CBC/PKCS7Padding" will cause NoSuchAlgorithmException to be thrown
when initializing an AES block cipher using the Java crypto API), I
consider this a gross misnaming in the Java platform because the pure
technical definitions of these paddings are not the same."
Ref: https://stackoverflow.com/questions/10193567/java-security-nosuchalgorithmexceptioncannot-find-any-provider-supporting-aes-e
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=207234518
Amazon like to use Device.MODEL, so key on that instead for
these workarounds.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=206917935
When user seeks to an unprepared period, since there is no period being played, currently the track groups and track selections are still the ones from previous period. This CL changes it so that when such seeking happens, PlaybackInfo's track groups and track selections are changed to empty.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=206916109
This is needed for implementing (optional) support for audio focus handling in a
later change.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=206899837
This CL adds support for seeking within PS streams by using binary search. For
any seek timestamp, it tries to find the location in the stream where SCR
timestamp is close to the target timestamp, and return this position as the
seek position.
Github: #4476.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=206787691
Currently, we have KeyStatus, KeyRequest and ProvisionRequest as interface, so we can use
custom implementation for purpose such as wrapping native objects. However, these interfaces and the corresponding default classes are only used to bundle data, and in all existing implementation (including native code), it's just as efficient to just use the Java default implementation. Therefore we can just get rid of the interfaces, and change
the interfaces into classes with the default implementation.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=206765389
There is some risk associated with this change, as audio track buffers come from
shared memory and limits may be device-specific. I've tested these sizes on
Nvidia Shield TV and Nexus Player on various builds. The maximum size allocated
is about 800 KB. We could implement support for retrying creating the audio
track if it fails to initialize, but it seems preferable to avoid the extra
complexity required to do that unless we know it's necessary to work around
device-specific limitations.
Issue: #3803
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=206749222
The platform fix was merged into O MR1, not O. Nexus Player has
not received this build.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=206734342
Add TeeAudioProcessor that doesn't modify the input audio but writes it to an
AudioBufferSink, and WavFileAudioBufferSink for writing audio to a .wav file.
This is intended to be used for diagnostics and debugging.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=206717458
MatroskaExtractor was checking for INDEX_UNSET as the sample count for buffers
not containing syncframes, but actually 0 was returned for these. Theoretically
this could prevent us starting to play a TrueHD stream as we wait until we can
read the sample count from a syncframe before accepting the audio in
DefaultAudioSink, but it seems that rechunking avoided this issue arising in
practice.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=206575462
The looping media source doesn't convert the media period id to the externally
visible media period id. And the merging media source reports media period
creations multiple times which will break listeners assuming a media period
with a specific id will only be created once.
Also amend the doc for MediaSource.createPeriod to reflect that media periods
created in parallel do not actually have the same id.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=206327241
Period transitions with non-zero start position happen too early as the
playing period is advanced as soon as the renderer offset is reached not
taking into account that the start position needs to be added to that.
Issue:#4583
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=206310328
AudioTrack checks the channel configuration against a mask of allowed channels.
Before Android M the check in getMinBufferSize would always fail for 8 channel
output.
For Android L constants are available to build the required channel
configuration for a conventional 7.1 setup and these constants are part of the
allowed channels mask, so switch to using them.
Before Android L the constants for 7.1 aren't in the allowed channels mask, so
discard channels to give a 5.1 stream.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=206307892
Remove minLoadableRetryCount from HLS components in favor of
LoadErrorHandlingPolicy#getMinimumLoadableRetryCount.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=206298419
The new method allows to add TransferListeners after the DataSource
has been created. Most implementations just forward to their wrapped
upstream DataSource. Implementation which directly read data implement
BaseDataSource instead.
Also removes the temporary default no-op implementation in DataSource.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=206289986
This helps to distinguish between the MediaPeriodId the deferred media period is being
created with and the MediaPeriodId which is used to create the actual underlying period.
This serves two purposes:
1. The error reporting of ad prepare errors uses the correct media period id (the
externally visible ad media period id).
2. The transition to using media period uid instead of indices is simplified.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=206160463
Using our own no-op castNonNull prevents linking into checkerframeworks library.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=206152148
Rewrite FlacBinarySearchSeeker and extract out the core binary search algorithm
into BinarySearchSeeker class so it can be re-used for other formats.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=206012900
This changes the default initial bitrate estimate to be country (group) and
network type specific. The existing overwrite still works as before and new
overwrites for the country or specific network types are provided for
customization.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=205972705
While the timeline is empty, we keep a dummy MediaPeriodId in PlaybackInfo with
a period index of 0. We leak this MediaPeriodId in actual use in these
situations:
1. When issuing an IllegalSeekPosition after preparation. The timeline becomes
non-empty, but the media period id stays at its dummy value.
2. When re-adding sources to a previously empty timeline. The dummy period id
is used as the start position for the new non-empty timeline.
This change makes:
- the constructor of PlaybackInfo using those dummy values more explicit
- prevents the issues above by using the correct default position in the new
non-empty timeline for the above mentioned cases.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=205803006
All known instances use DataSource as generic type and thus code can be simplified
by removing the generic type altogether.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=205798542
Using this surface it's possible to play 360 videos in a non-VR Activity that is
affected by phone and touch input.
RELNOTES=true
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=205720776
This reduces the number of calls to the DataSpec constructor and minimizes the number of files that need to be updated when adding a new DataSpec parameter (ex: followup []
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=205719005
As the manifest and media data sources can be the same now, we can provide
a simplified constructor with just one data source factory.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=205658046
This allows to automatically forward bandwidth estimate events to
AnalyticsListeners.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=205642752
This removes the need to populate the entire period for the common usage of
getting the uid from the period.
Also add default implementation to get period by uid.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=205638265
The end position is needed to make the MediaPeriodId unique as multiple
content periods may only vary in this parameter.
This also simplfies some other comparisons where the end position needed to
be compared in addition to the media period id.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=205634508
The number is shelved in calls to queue.clear() to keep it for the next
media period. However, the queue may also become empty by repeated calls to
advancePlayingPeriod which may happen when seeking to an unprepared period.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=205376036
Currently, when the VideoRendererOutputCapturer updates output size, it will
set the new surface, then release the old surface. This can lead to problem
when both surface depends on EGL, since the second release() can release EGL
resources of the first surface.
This CL reverses this process, and ensures that the old surface is released before the new one is created.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=205235451
Setting the transfer listener on the data source factories is only needed for debug
purposes, logging and for custom bandwidth metering which doesn't use the
player-provided bandwidth meter. As such, it is not compulsary and it should be easy
to set up the data source factory without a transfer listener.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204926083
This was only needed temporatily until we could ensure that the player always
provides a BandwidthMeter.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204903640
As part of this change:
- Don't apply the workaround on API level 27+. GTS coverage
should prevent such devices from existing.
- Use Util.DEVICE consistently.
- Remove the "// Device name", which don't really add much
but make extra work when updating the list.
Issue: #4468
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204889657
This will allow deduplicating the argument from all Loader clients.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204889331
This bandwidth meter is then forwarded to the track selection and as a transfer
listener to media and data sources.
When no bandwidth meter is specified in the ExoPlayerFactory methods, a static
singleton instance will be used.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204881497
When notifying the bandwidth listeners of new samples, the forwarded values
need to be final to prevent concurrent access. Putting the event forwarding
into a separate method ensures the values are final.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204877650
The sample queues haven't been created when the first init call
occurs. In this case we need to set sourceId when we subsequently
create the queues.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204467538
1. Copy label into derived formats
2. If audio is the primary track type, copy additional fields from
the variant formats. This is probably a no-op in practice, since
I don't think variant formats have these fields set anyway, but
it seems like the right thing to do in case they ever are set in
the future.
Note: It's a bit strange to use createXContainerFormat rather than
createXSampleFormat, but in practice the methods used here are
better matched for what we're trying to do.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204467287
After [] we support default font size for TTML, relative to the cellResolution of the document. However, this introduced a bug that makes TTML font-size in such case always follow the cellResolution font size, even when SubtitleView.setApplyEmbeddedStyles(false) and SubtitleView.setApplyEmbeddedFontSizes(false) were used.
This CL updates the fix so that the default font-size using cellResolution works in the same way as other embedded styles, and can be turned off using setters from SubtitleView.
GitHub: #4491
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204467033
For the MetadataRetriever, for certain queries, after setting up the player to
render a frame (by seeking to the position), sometimes the player will seek to
the same position and ignore the seek, leading to the frame not being captured,
leaving the retriever in deadlock, waiting for the frame forever. This CL adds
a retry timer to avoid this and make sure we can return query result after some
time.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204460200
1. Prefer label and language values in the manifest to those in
the media. This is particularly helpful if the sample format
contains "und" as the language.
2. Copy label when deriving formats in HlsSampleStreamWrapper
3. When there's only one variant in HlsSampleStreamWrapper, use
the regular copyWithManifestFormatInfo. This allows more
information to be retained from the sample format.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204340008
That allows to add listeners after the BandwidthMeter has been created which is
helpful as the BandwidthMeter instances are often long-lived static instances.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204255299
This allows to iterate through the available segments of the playlist.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204100116
Add supports for reading duration for a PS stream by reading SCR values from
the header of packs at the start and at the end of the stream, calculating the
difference, and converting that into stream duration.
Github: #4476
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203954752
It has now become an empty shell as the real TransferListener provides all its
methods.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203950443
There are only two types at the moment and we can therefore use a boolean.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203937357
[Problem] Sarnoff spec complaince tests streams are MPEG2 TS.
Currently, parsing CC data from MPEG2 TS is not supported
[Solution] Parsed CC data from MPEG2 stream because all Sarnoff streams are MPEG2
Also fixed showing "remove notification" when download is completed.
Issue:#4469
Issue:#4488
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203927268
Power Comparison:
TextureView 1080p 720p
H264 HW 498, 496 507, 478
VP9 RGB 1050, 1104 1185, 1152
VP9 ANativeWindow 1070, 985 700, 674
GLSurfaceView
VP9 YUV 1075, 1112 716, 635
SurfaceView
H264 HW 419, 409 397, 377
VP9 RGB 1044, 1139 654, 671
VP9 ANativeWindow 975, 835 617, 623
VP9 MediaCodec 683, 679 488, 476
Measures average current drawn mAH on a Nexus 6 at full brightness from time t=3 to t=95 seconds. The same clip was used for all tests. Two measurements were taken for each category.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203847744
It's no longer text specific (it's used for metadata as well, and
in theory could apply to any stream in which samples contain multiple
sub-samples)
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203767825
Until now, the streams were released and re-enabled for each type of stream
(primary, event, embedded) in that order. That leads to problems when replacing
streams from one type to another (for example embedded to primary).
This change restructures the track selection to:
1. Release and reset all streams that need to be released or replaced.
1(a). Including embedded orphan streams.
2. Select new streams.
Issue:#4477
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203751233
Where a device has this issue, it most likely applies to all
SOC vendor provided decoders, which are normally the only
video decoders other than the OMX.google software decoders
on the device. The fact we currently only blacklist for AVC
decoders is likely just a side effect of AVC's popularity.
I checked two devices already on the blacklist, and both
failed with other SOC vendor decoders on the device as well
(but passed if forced to use OMX.google decoders instead)
Issue: #4468
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203728285
Viewport constraints apply to adaptive content even if the
actual playback isn't adaptive (i.e. because the selector
ends up making a fixed track selection).
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203726831
- Support handling frame queries (i.e get frames at times, output to certain
sizes) from MetadataRetriever.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203489788
If there is only one track, we can assume that both boxes refer to the same track
even if the track indices don't match.
Issue:#4083
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203485872
MediaDrm.provideXResponse methods only accept the response
corresponding to the most recent MediaDrm.getXRequest call.
Previously, our code allowed the following incorrect call
sequence:
a = getKeyRequest
b = getKeyRequest
provideKeyResponse(responseFor(a));
This would occur in the edge case of a second key request
being triggered whilst the first was still in flight. The
provideKeyResponse call would then fail.
This change fixes the problem by treating responseFor(a)
as stale. Note that a slightly better fix would be to
defer calling getKeyRequest the second time until after
processing the response corresponding to the first one,
however this is significantly harder to implement, and is
probably not worth it for what should be an edge case.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203481685
Both boxes should contain the same list of track indices. However, if only one
track index in each list does not match, we can just assume that these belong
together.
Issue:#4477
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203481258
Since this is an ongoing problem, it's reasonable that we allow
developers to toggle these workarounds without too much hassle.
Issue: #4468
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203364488
This allows to register a listener on an outer wrapping data source which
receives data transfer events from the wrapped source.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203358981
This wires up recent changes of passing a transfer listener to the MediaSource and
allowing DataSources to accept new listeners.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203280818
Add supports for reading duration for a TS stream by reading PCR values of the PCR PID packets at the start and at the end of the stream, calculating the difference, and converting that into stream duration.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203254626
Codec initialization may fail in creation, configuration or when start()ing the
codec. If codec initialization fails, there may be other codecs available that
could handle the same format, but currently ExoPlayer can only try to use the
first listed codec for the input format and gives up if it fails to initialize.
This change implements support for optionally falling back to alternative
decoders if initialization fails. MediaCodecSelector can now return a list of
decoders to try in priority order, and use the Format when choosing a codec.
With the default implementation, the codecs and order come from MediaCodecList,
and matches the order used internally by MediaCodec.createDecoderByType (which
implements the same kind of fallback though only to the creation step, without
configuring/starting the codec).
This feature is useful for apps that want to play several videos concurrently on
devices that have software decoders (like OMX.google.h264.decoder), as the new
behavior allows new codecs to be created when no hardware-accelerated decoders
are available.
The list of available codecs is queried when initializing the codec after a
format change that requires a new codec to be instantiated. When a decoder fails
to initialize it is removed from the list of available decoders and won't be
tried again until the next format change (or until the renderer is disabled).
Note: this change does not affect the renderer capabilities API, as when
checking format support we don't know which codec will be used.
Issue: #273
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203242285
This ensures compatiblity of other apps depending on our public GitHub code.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203129076
This allows to iterate through the available chunks of the stream.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203105813
