This method is needed by FlacExtractor to release native resources.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119143922
This replaces calls to unescape except for SEI unescaping.
Use the new ParsableNalUnitBitArray for reading the slice header in HLS
access unit detection and slice_type reading.
Unescape the SPS before parsing in FLV and MP4. Before this change it was
parsed in its original (escaped) form.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=118777869
The only change that's not re-ordering is to add a Util method
for usToMs to replace the ones in the HLS and Chunk sources.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=118775359
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.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=118774865
Step 6 of the refactor involves moving the logic that's
currently in the SourceBuilder classes in the demo app
into new SampleSource classes in the library. These classes
will construct video/audio/text pipelines on-demand (i.e.
when tracks are enabled) rather than constructing them all
up front as is currently the case in the SourceBuilder
classes. Hence we need a way to instantiate DataSource
instances (i.e. a DataSourceFactory ;)).
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=118722180
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.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=118573418
This fixes some nuances with the initial solution. Mainly,
that the TrackStreams returned by selectTrack could not be
used safely until after endTrackSelection was invoked. It
also reduces the need for member variables to track state
between the track selection methods.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=118556651
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.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=118470751
This removes the need for each SampleSource implementation to
implement 3x "if(condition) {noop}" tests (ChunkSampleSource
and SingleSampleSource were missing some of these checks).
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=118036233
This change optimizes startup and track selection for HLS. Changes
in HlsChunkSource avoid unnecessary re-requests for media playlists.
Changes in HlsSampleSource optimize exit from the limbo state (i.e.
when endTrackSelection is first called).
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=118026962
1. SampleSource now has an explicit track selection state. This state is entered
after the source is prepared, and also by calling startTrackSelection.
2. endTrackSelection commits selection changes, and is responsible for doing the
right thing w.r.t starting/stopping/restarting load operations.
3. All sources now start or restart a load in the case of a new track selection.
This fixes a problem where a source could be advanced by repeatedly disabling
and re-enabling whilst paused. Some sources didn't restart a load in this case,
since the position was unchanged, however the downstream renderer would then
consume media up to the first keyframe in order to render something. Hence
each disable/re-enable would advance by a keyframe.
4. This change will enable a subsequent change where we'll discard media for
non-selected tracks earlier than we do currently (i.e. we'll hook the extractor
to a dummy track output, so the samples will never be written to a rolling
buffer). This will enable a further subsequent change where buffer contributions
are per-renderer rather than per-source.
Issue: #1041
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=118024436
This fixes an issue where the PsExtractor would start reading
unsynchronized if sniff was called.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117958077
Expose the input buffer for Exoplayer V2. This allows subclasses to
parse the input buffer before it is decoded. One particular usage
of this is to allow parsing user data stored in the tracks
(e.g. SEI in H264), and incorporate the user data into the rendering.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117865971
Also use MediaCodec buffer flag constants instead of those on MediaExtractor.
This is in preparation for merging InputBuffer and SampleHolder.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117810136
This version only supports 16-bit uncompressed PCM. A follow-up CL will
add support for other sample bit depths.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117809475
If this situation is encountered, we assume that the encoder has a good reason to
do this and use the last pts + frameDuration as new pts.
Issue: #1295
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117808961
- Remove special DefaultTrackOutput.sampleData method, and have
SingleSampleMediaChunk use the regular one instead.
- Make DummyTrackOutput behave correctly is allowEndOfInput is
false.
- Simplify progress tracking in ExtractorSampleSource.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117808659
This is the first version and is still not linked to the WebVTT parser nor
does it support all the intended features, but it was left this way to
ease the review a little bit.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117722492
- Not doing any renaming for now. It'll be easier to wait
until after the extensions themselves are brought across.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117438338
When the ctts contained an entry that had a 0-valued entry count, the
parser would miss every other entry, failing the final assertion.
The standard does not seem to prevent the value 0 in the sample_count
field, so we need to allow it.
Issue: #1326
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117241945
When the edited sample sequence does not contain any sync sample Exoplayer does not provide
support. This CL changes the ArrayIndexOutOfBoundsException for a more explicative
ParserException.
Issue: #1336
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117241805
The MP4 standard considers the udta box as a regular container box. Quicktime, however,
considers it as a container (of only leaf atoms) that can have a terminating 32 bit
integer with value 0. Since this breaks the principle of not having content in container
boxes, this CL considers the udta box as a leaf box that contains other boxes and does
the parsing manually.
Issue: #1315
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117237255
This fix derives from issue #1308, which came up in unfragmented mp4 files.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117236416
The parsing of multiple moov boxes for a single ExtractorOutput incurred in
an assertion failure due to repeated track declarations. This CL makes each
new moov box replace any previous one. This change is transparent to the
client, no flags are provided to allow this feature.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117236246
The minimum compression ratio matches the Nexus 5X MPEG-4 video decoder.
Issue: #1290
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117234657
If a container box is empty, it is never removed
from the container box stack, breaking the extractor.
Issue: #1308
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117228211
- Made enabledRenderers an array to avoid loads of method calls.
- Made if so that enabled renderers are always called in a consistent
order, rather than their order changing if they're enabled/disabled
over time. This is likely to make performance more predictable.
- Split out reading of resets into a separate method. This method is
now called directly after seeking on the source, so as to ensure
instant propagation of the new position from source->renderers in
the common case.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117225639
Some devices fail to decode an avc3 stream that doesn't start with an SPS (for
example, if an access unit delimiter appears first). Workaround the issue by
discarding input sample data up to the first SPS on those devices.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117224602
When reading unknown duration files with CBR seeking, the Mp3Extractor could
try to read sample data from 0. This happened because synchronization did not
skip over the ID3 data when it immediately found valid frames. When the invalid
sample data is read, the extractor tries to resynchronize from the next byte
(at offset 1), and this fails because the ID3 data at the start of the file is
longer than the synchronization search distance.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117224270
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.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117224224
The upstream source (or its stream) should always provide data
starting from a sync frame, so this logic shouldn't be necessary.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117220759
allow "center".
This value (and not "middle") is listed in
https://w3c.github.io/webvtt/ ( WebVTT: The Web Video Text Tracks Format, Draft
Community Group Report, 21 December 2015).
Leaving the behavior for "middle" unchanged.
It was the value listed in older drafts, e.g.
https://www.w3.org/TR/2014/WD-webvtt1-20141113/ ( W3C First Public Working
Draft 13 November 2014 )
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117220612
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
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117220417
This avoids accessing PtsTimestampAdjuster through a thunk method,
and allows the PesReader classes to be static, which is nice in
general.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117220139
Set the duration to the sum of the final period's start
+ duration (if available) if MPD@mediaPresentationDuration
isn't set in the manifest.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117141391
- readFully calls when reading a string or varint may have 0 length.
The behavior of a 0 length read isn't well defined either at the
ExtractorInput or DataSource level, particularly when the read may
also coincide with EOS. We'll work on defining these cases properly
going forward, but in the meantime this fix avoids attempting 0
length reads.
- [Aside] UTF8 the is guaranteed default charset on Android.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117130356
DTS Express (which is DTS LBR according to http://www.mp4ra.org/codecs.html) is
not supported for passthrough playback currently. Associate a different MIME
type with it so that we don't try to use DTS passthrough for playing DTS
Express.
The MIME type for DTS Express is just vnd.dts.hd, with a profile parameter
indicating that it's DTS Express rather than one of the other formats.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117129583
Handle minor timing difference between the different media content
and the available range values as specified in the MPD.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117127112
The logic in the platform was causing captions and the reported
playback position to gradually drift out of sync with respect to
audio and video.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117126970
Notes:
- The way this works is that every time the player needs to
select some tracks it invokes the TrackSelector. When a
track selection is actually activated (i.e. "hits the
screen") it gets passed back to the TrackSelector, which
allows it to expose the current tracks through an API that
it may choose to define. Since playlist support doesn't exist
yet, it's currently the case that the pass-back always occurs
immediately.
- A TrackSelector can invalidate its previous selections if its
selection criteria changes. This will force the player to invoke
it again to make a new selection. If the new selection is the
same as the previous one for a renderer then the player handles
this efficiently (i.e. turns it into a no-op).
- DefaultTrackSelector supports disabling/enabling of renderers.
Separately, it supports overrides to select specific formats.
Since formats may change (playlists/periods), overrides are
specific to not only the renderer but also the set of formats
that are available to it. If the formats available to a renderer
change then the override will no longer apply. If the same set
of formats become available at some point later, it will apply
once more. This will nicely handle cases like ad-insertion where
the ads have different formats, but all segments of main content
use the same set of formats.
- In general, in multi-period or playlist cases, the preferred
way of selecting formats will be via constraints (e.g. "don't play
HD", "prefer higher quality audio") rather than explicit format
selections. The ability to set various constraints on
DefaultTrackSelector is future work.
Note about the demo app:
- I've removed the verbose log toggle. I doubt anyone has
ever used it! I've also removed the background audio option.
Without using a service it can't be considered a reference
implementation, so it's probably best to leave developers to
figure this one out. Finally, listening to AudioCapabilities
has also gone. This will be replaced by having the player
detect and handle the capabilities change internally in a
future CL. This will work by allowing a renderer to invalidate
the track selections when its capabilities change, much like
how a selector is able to invalidate the track selections in
this CL.
- It's now possible to enable ABR with an arbitrary subset of
tracks.
- Unsupported tracks are shown grayed out in the UI. I'm not
showing tracks that aren't associated to any renderer, but we
could optionally add that later.
- Every time the tracks change, there's logcat output showing
all of the tracks and which ones are enabled. Unassociated
tracks are displayed in this output.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117122202
- I don't think the length is useful in hashCode; if the length
is different then Arrays.hashCode should account for that.
- "this." just for consistency across these classes.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=116641142
