Fix Matroska, Heif, FLAC, Ogg, Opus, Vorbis
extractor nullness check.
There should be no functional change.
Every media that fail to be parsed should still fail.
Every media that parsed successfully should still succeed.
This refactor aims to push all nullness constraints up the call stack to clarify each API nullness contract. This ensures implementation and caller have to prove their respective contract close to where such logic is implemented. This also allows to fail early if an nullness contract is broken instead of deep in the call stack.
For example, by adding a requirement that all implementation of `StreamReader.readHeaders` have to initialize `setupData.format` if the return false, each overriding method is forced to prove this next to the logic initializing it. This also means the runtime check might not be needed because the nullnessChecker can prove itself the contract holds.
This is in contrast with adding a null check at the point of usage, which will not catch logic errors where they are produce, but later when they are perceived; making it harder to debug and catching the issue at run time instead of compile time.
#exofixit
PiperOrigin-RevId: 346163124
Retrieve the capture frame rate and the SVC temporal layer count from
the smta box instead of the meta box because this is what Samsung do. It
is not guaranteed that the meta box will be present and will contain all
the necessary info in all slomo files.
PiperOrigin-RevId: 345639680
This was reported for SSA/ASS in PR #8265, but it seems to me the
SubRip part of the Matroska spec is similarly loose, so this change
handles null-terminated strings in both.
#minor-release
PiperOrigin-RevId: 345452667
This method should be assumed to clear the data of the underlying array
(it will do this if the new limit > data.length).
This means it should only be called (directly) before writing into the
backing array.
It shouldn't be used as a shorthand for position=0, limit=x - those
should be two explicit method calls.
Most of these changes are no-ops, but they make the code more correct.
The TS SectionReader can't be easily changed to be 'safe', because it
relies on sectionData maintaining state between iterations of the while
loop. Instead I've added comments justifying the existing code.
PiperOrigin-RevId: 344515340
*** Original commit ***
Suppress warnings in preparation for Checker Framework 3.7.1 upgrade.
LSC: go/checker-lsc
Tested:
TAP train for global presubmit queue
http://test/OCL:342788973:BASE:342817196:1605636478036:6c558c0c
***
PiperOrigin-RevId: 343895651
*** Original commit ***
Suppress warnings in preparation for Checker Framework 3.7.1 upgrade.
LSC: go/checker-lsc
Tested:
tap_presubmit: http://test/OCL:342788975:BASE:342885903:1605667635149:7731b723
Some tests failed; test failures are believed to be unrelated to this CL
***
PiperOrigin-RevId: 343251530
When I moved ParsableByteArray#data behind a getter I replaced some
assignments with calls to reset(byte[]):
ce2e6e2fd6
reset(byte[]) deliberately sets `limit` to `data.length`, in order to
handle cases that were reassigning `data` but not updating `limit`.
However OggPacket was already using `limit` to track where to write
'new' data into the array, so changing `limit` to `data.length` caused
us to try and write new data beyond the end of the array.
I looked at other uses of reset(byte[]) in ce2e6e2fd6
and condluded the only other usage in MatroskaExtractor is legit and
shouldn't be updated like this (because MatroskaExtractor previously
*wasn't* correctly updating/maintaining `limit`).
Issue: #7992
PiperOrigin-RevId: 334601586
This allows to customize extractor flags more easily when setting up the player.
In addition, we need to provide a way to pass in the ExtractorFactory through
the constructor chain starting in SimpleExoPlayer so that removing the
DefaultExtractorsFactory is possible for R8.
PiperOrigin-RevId: 330472935
