Implemented the other end of the webvtt timestamp parsing as it will
be needed when we write out WebVtt files. Also changed the name of
the parse function to be more inline with the writing function.
Change-Id: I1f36ddbbf80028732b4cb1b15e871dec17767f63
Inside of CreateRemuxJobs, we would take a status value from another call,
log the message, and return a boolean. The caller of CreateRemuxJobs would
then create status from the boolean.
Now we will pass the status value from the other call directly to the caller
of CreateRemuxJobs. So that failures can be better communicate in our code.
This includes a pass of clang-format over packager/packager.cc.
Change-Id: I071e7bad13f916e963641b9e53699573fe1060ed
Rewrote the RunRemuxJobs function to use waitable events so that we never
get stuck waiting for a job to finish before getting to a thread that
has already exited.
This should allow us to end execution when a job failed rather than
waiting for all jobs before the failed job to finish.
Closes#94
Change-Id: I413f62561a7a4cab83b8905e75986230b6c498bc
Created a handler called OriginHandler that can be used by the Job class
(previously called RemuxJob). Origin handlers represent the start (or
origin) of a pipeline (chain of handlers).
Change-Id: Ibd748ae0a932b6e0ebb879ea292fcb83c548214b
Support generation of fairplay key system tag: "com.apple.streamingkeydelivery" when --pssh
includes fairplay key system id:
// Unofficial fairplay system id extracted from
// https://forums.developer.apple.com/thread/6185.
const uint8_t kFairplaySystemId[] = {0x29, 0x70, 0x1F, 0xE4, 0x3C, 0xC7,
0x4A, 0x34, 0x8C, 0x5B, 0xAE, 0x90,
0xC7, 0x43, 0x9A, 0x47};
Closes#258
ImportantFileWriter::WriteFileAtomically uses mkstemp internally,
which set file permission to 0600, which is not what we want.
Update the code to not use mkstemp instead.
Also updated temporary file name logic to include process id in
the name so it can be unique across processes.
Fixes#259
Change-Id: I2d5a375925cf552bc0db5269f409d7522e63fca5
This avoids interference caused when two sockets are bound to the
same port in different multicast groups.
Fixes#241
Change-Id: Iba1b3300e3850f1f268886b7a49f5a3315d95b80
Derive file size from media ranges instead.
Also fix subsegment range reporting for WebM (internal variable,
no output affected).
Change-Id: I5f8152dff4c2cd5fbae5550992b86a669e278f7b
- The master playlist should have the display resolution instead of the
encoded resolution.
- Changed MediaPlaylist to return display resolution.
Change-Id: I162727d0bdeed0302518286e42a22b69a58fc4a3
- Use byte range format if segment_template is not set in MediaInfo.
- Change HlsNotifier::NotifyNewSegment() to take start byte offset.
- Change HlsNotifyMuxerListener to cache the segment information if
MuxerOptions::segment_template is set.
Change-Id: Ida1b8b9198acc5c43e3a5d9a641c78c81bc9a6ac
- Changed OnMediaEnd() to take (sub)segment ranges.
- Define a structure to pass the ranges.
- This requires muxers to "cache" the segment ranges but in most cases,
they already do it, e.g. 'sidx' for mp4.
Change-Id: I16b974c1f0f54ca658cc6dbe605efff84a3f52eb
In the original manifest updating process, the file was truncated first
before was written with new contents. There is a small chance that
the web server may read back empty file or incomplete file.
The new code makes the update operation atomic (by writing to a temporary
file first then replace the old file with the temporary file).
Fixes#186
Change-Id: I2fd564cb12b922b032c0e9f70d2132a5b12ff098
- Remove the TS key rotation not supported check as there is nothing
to be done for key rotation in TS for SAMPLE-AES.
- Fix IV updated problem in new segments even if crypto period does
not change.
- Avoid duplicate EXT-X-KEY tags if it does not change.
- Make EXT-X-DISCONTINUITY-SEQUENCE match with number of removed
EXT-X-DISCONTINUITY.
- Added end to end test for HLS with key rotation.
Change-Id: I73cb82e9f5575fcdf63ee643228efe78e6766302
Resolving TODO in packager/hls/base/master_playlist.cc that asked for
media playlists to be grouped when they are added.
Change-Id: I01c7687400bc74ce45f271d0242d1c3bf3610cf2
- This fixes the issue when one NAL unit has multiple
subsamples, which is allowed in spec and could happen
when the clear_bytes exceeds 2^16 bytes.
- The new algorithm updates the subsample entries in
following steps:
1) When NaluReader parses a new NAL unit, the
function splits subsamples and align them with the
NAL unit. It also finds the range of subsamples
for that NAL unit.
2) Drop or update subsamples of that NAL unit,
based on the type. Other inserted bytes are treated
as a new all-clear subsample.
3) Merge those subsamples if possible.
- This addresses #237.
Change-Id: I2cab47cd00d90e29ec52b90d4fde057c632193ac
Moved all the timestamp parsing code into its own class with its
own unit tests. This is to make testing easier.
Change-Id: I624472baba51dfa1254a9f4bae55ebb79e310855
The HLS manifests output by the packager did not have the RESOLUTION
attribute on EXT-X-STREAM-INF tags. This change adds the resolution
tag when resolution values are present.
Close#235
Change-Id: I15ca6de47cb34793cf6a940123d593261627baa4
Shared libpackager can be built by setting libpackager_type to
shared_library, e.g.
GYP_DEFINES='libpackager_type=shared_library' gclient runhooks
ninja -C out/Debug
will generate libpackager.so in out/Debug/lib directory.
Here is a few other changes to make shared_library builds and
tests pass:
- Add several test parameters to packager.h, which is needed for
testing.
- Create a protoc.gypi from build/protoc.gypi but depending on
protobuf_full_do_not_use instead of protobuf_lite, since we need
protobuf_full_do_not_use for text parsing and generation of media
info proto. Somehow shared_library build does not allow mixed use
of protobuf_full_do_not_use and protobuf_lite.
- Remove the use of LazyInstance in version/version.cc and use static
variable directly. This is because LazyInstance needs AtExitManager
which may not be easy to setup when calling GetVersion.
- Allow skipping testPackageWvmInputWithoutStrippingParameterSetNalus
with flag --shared_library, which is needed as shared_library build
does not support --strip_parameter_set_nalus flag yet.
Fixes#227
Change-Id: Iff05a50baa28134faa7218664c96114cb9e70329
Added a text sample type that can be passed between media handlers.
This will allow text samples to safely be moved between media
handlers before converting to their final format.
Bug: 36138902
Change-Id: Ic4946f774a7d37c43066b9ea46596d5c5f3c05a8
frame_duration is not available when the VideoInfo is created, but
it will become available when a media segment arrives.
Change-Id: I2c24852fca4ff77c2b86ff78dbf0963ad0a0afa6
'availability_time_offset' is not an attribute in MPD specification,
but used to calculate availability_start_time to adjust segment
availability time. A similar effect can be achieved with standard
blessed suggested_presentation_delay flag.
If suggested_presentation_delay is not set, player is expected to
choose a suitable value.
Change-Id: I1d540bd4347b4f04b6cc5ec0778e1a5392009b09
Widevine license server added support for protection_schemes recently;
If CENC request includes protection_scheme in the CENC request, server
will return with a PSSH with protection_scheme filled in.
Change-Id: I6dcac498b5e039503d6ac0f6e057737f7c53efaf
This addresses playready broken with clear lead = 0.
clear lead != 0 is still broken with playready on Edge. We think it is
likely an Edge bug, which does not support multiple sample entry boxes,
thus does not support clear lead.
b/37913785
Change-Id: I7adb77a913dccf669153b03b31b4a1e1c98d1cb0
- Implemented according to v1.0 spec @ https://www.webmproject.org/vp9/mp4/
- v0 is no longer supported
Change-Id: I189c813d788400beda797eea7da943a83dfa7d79
- This change has the muxer listener side changes.
- Also changed SetContentProtectionFields() to take vector for
default_key_id so that MuxerListener subclasses don't need to convert
it to string.
Change-Id: I8832848a0c7e34b84e2b4e6baeba364861900ff1
- Added flag --mp4_include_pssh_in_stream, default to true. If it is
set to false, the encrypted mp4 stream will not include pssh.
- Align BytesOfProtectedData to multiple of 16 bytes for cenc.
- Set TrackHeader flag to kTrackEnabled | kTrackInMovie |
kTrackInPreview
- Move mvex to after trak, required by HLS
- Add cmfc/cmfs compatible brands except for avc3/hev1, where CMAF
requires single initialization switching set which is not supported.
- Set duration to 0 in tkhd, mdhd, mvhd.
Also updated major_brand and compatible brands:
- Set major_brand to isom (iso-bmff media file format) and made dash
a compatible brand
- Replaced compatible brand iso6 with iso8 since we use sthd for text
tracks
Fixes b/36278260
Change-Id: I3cc5dd5aa1621714d517fe02fe3841d19a1a07f6
- Also fix the misleading error if an invalid input is provided
The command line app now correctly reports that the file is not
found instead of stream not available.
Change-Id: I8cfccb62d7a50de57766666f126cf061e3df5ded
This is what webm_subsample_encryption flag actually does.
- Fixes the flag not working problem introduced by previous CLs.
- Also mark flag webm_subsample_encryption as deprecated.
Closes#220
Change-Id: I03ff843786572a91c01b8bd346a3ce50b129118f
Also added a few more command line flags for end to end test:
- no-remove_temp_files_after_test: do not remove test artifacts after
test
- encryption_key, encryption_iv: allow injecting encryption key/iv from
command line
Change-Id: I62084790e10fe6a385b90cb96d9515d8436b2a49
- Add EXT-X-MAP tag for init segment.
- Do not set output field on stream descriptor if not specified on
command line. If it's set (internally) then it gets copied to
MediaInfo that gets passed to the manifest generators.
b/36279481
Change-Id: I762c55b255699ec691817dc4806b0dee2f7504b8
- The flags were overwritten in a loop and therefore only stored the
last value of the flag.
- Change the fields into arrays so that the flags are not overwritten.
Change-Id: I59762d7c84bc3d81bf3b0b5e85ffe689260d970a
This is a fix for issue #216 where the Representation::SlideWindow() logic was
still active even though a static MPD was being asked to be generated (using
the option -generate_static_mpd). This could cause static streams longer than
1800 seconds to start playing at (end-position-for-stream - 1800 seconds).
This change is in compliance with the current usage documentation for the
shaka-packager, which suggests that -time_shift_buffer_depth only is relevant
for dynamic media presentations.
Added a flag --strip_parameter_set_nalus. When enabled, parameter
set NAL units, SPS/PPS for H264 and SPS/PPS/VPS for H265, are stripped
from frames when converting NAL byte stream (AnnexB stream) to NAL
unit stream, which generates avc1/hvc1; otherwise they are not
stripped, and avc3/hev1 is generated.
Parameter set NAL units should not be stripped if they are varying
in the frames otherwise the frames may fail to be decoded.
The flag is enabled by default as we don't usually see varying
SPS/PPS/VPS and it is more space efficient with them stripped.
Set --strip_parameter_set_nalus=false to disable the flag if there
are varying SPS/PPS/VPS in the frames. This addresses #206.
Change-Id: I34bde6f33069f9f77d51a510b39f58a0f0e141aa
The issue could lead to the MPD attribute mediaPresentationDuration being
wrongly generated for WebM streams with a duration longer than INT32_MAX.
The root-cause was that StreamInfo::set_duration() accepted an int instead of a
uint64_t. This seems like a pure typo, since StreamInfo already uses a uint64_t
internally for representing duration.
This CL also removes EncryptionConfig stream data type and merges it
into StreamInfo/SegmentInfo instead.
Change-Id: Idb70ce503e61d3c951225cc78b6b15c084e16dcd
- Disable subsample encryption for VP8 in ISO-BMFF
- Apply block alignment to all subsamples for VP9 in ISO-BMFF,
instead of just superframes.
Change-Id: I8dd31cc16e87abc4d538330eaff9acb0509497df
- luma_weight_l0_flag, luma_weight_l1_flag,
chroma_weight_l0_flag, chroma_weight_l1_flag were there but not set.
- The user should use the values in pred_weight_table_l0 and
pred_weight_table_l1 instead which are set.
Change-Id: Ic9c44fb113717346938a339faf074daa32d4c2d2
Also moved MediaHandler output validation to Initialize instead.
This CL also addresses #122 with consistent chunking.
Change-Id: I60c0da6d1b33421d7828bcb827d18899e71884ce
- WebVttMediaParser uses WebVttSampleConverter to generate non
overlapping media samples.
- The media samples contains ISO BMFF boxes.
- Add kCodecWebVtt to signal that the media is webvtt and
the samples will be in ISO BMFF boxes.
Change-Id: I639902cdba7b04af75428bc20622e26b8203cfb2
Before this, HLS output did not contain language information.
Now, media playlists are properly tagged with a language in the
master playlist.
b/36134267
Change-Id: I172e946dbedd096a44cb2f917b007cc004756228
- Also sets up the packaging and verify it works.
Some of the changes are temporary to get the integration going.
Change-Id: I0cf6c379d185e157808acabb9ef58ff93d4a39ae
The spec actually requires all NAL units to be escaped, so there
is no need to escape it again.
NAL byte stream is one demarcation method; NAL unit stream is another
demarcation method. Regardless of the demarcation method used, the
requirement for NAL unit is the same. See the last paragraph of
7.4.1 NAL unit semantics on the requirement on emulation prevention bytes.
Change-Id: Icc63fcc5cf965632e331f5af5f673164c7c1663a
CENCv3 recommends only encrypting video data in slice NALs. Slice
data partition NALs should not be encrypted.
In the code, differentiate is_vcl and is_video_slice. They are the
same for H265; for H264, vcl NALs include slice data partition NALs
but video_slice NALs do not.
Change-Id: I91f4bdd76d25f0eac50e39aed350ebce3f667121
- Logic for splitting up WebVTT cues into MP4 samples.
- For any cue intervals that overlap, a new sample must be created.
Change-Id: Icf7478f42d8c5790bf6f404d512c1251dd34c405
This handler is a multi-in multi-out handler. If more than one input is
provided, there should be one and only one video stream; also, all inputs
should come from the same thread and are synchronized.
There can be multiple chunking handler running in different threads or even
different processes, we use the "consistent chunking algorithm" to make sure
the chunks in different streams are aligned without explicit communcating
with each other - which is not efficient and often difficult.
Consistent Chunking Algorithm:
1. Find the consistent chunkable boundary
Let the timestamps for video frames be (t1, t2, t3, ...). Then a
consistent chunkable boundary is simply the first chunkable boundary after
(tk / N) != (tk-1 / N), where '/' denotes integer division, and N is the
intended chunk duration.
2. Chunk only at the consistent chunkable boundary
This algorithm will make sure the chunks from different video streams are
aligned if they have aligned GoPs. However, this algorithm will only work
for video streams. To be able to chunk non video streams at similar
positions as video streams, ChunkingHandler is designed to accept one video
input and multiple non video inputs, the non video inputs are chunked when
the video input is chunked. If the inputs are synchronized - which is true
if the inputs come from the same demuxer, the video and non video chunks
are aligned.
Change-Id: Id3bad51ab14f311efdb8713b6cd36d36cf9e4639
This will move ContentProtection element from Representation
to AdaptationSet.
Shaka Player already supports AdaptationSet switching
urn:mpeg:dash:adaptation-set-switching:2016;
ExoPlayer does not support it yet. Filed
https://github.com/google/ExoPlayer/issues/2431 to track the issue.
(ExoPlayer does not like having ContentProtection in Representation
anyway)
Closes b/34691105
Change-Id: I69d0a4d0e15a912a35c8b2686620419a28e4cc99
- Deprecated command line flags --profile and --single_segment.
'segment_template' in stream descriptors implies live profile
and non-single segment.
- Added flag --generate_static_mpd_for_live_profile to generate
static mpd for live profile; if not set, dynamic mpd will be
generated.
Close#142
Change-Id: I78879297ed118f0f246c4753a16ad125bd6b5e4f
- Added two new fields in MpdOptions: dash_profile and mpd_type
- Updated MpdBuilder to support LiveProfile with static mpd
- Command line arguments will be updated in the next CL
Issue #142
Change-Id: Ibd35e5c9e1b1ef98043392e3f04a0af4700135c1
- Add MSVS related patterns to gitignore.
- Removed encryption_modes.h from media_base.gyp. It doesn't exist.
Change-Id: I44bc86ff7e79daf6f7bc61c21a558937530d8e66
Current mechanism of using AdaptationSet @group is not spec compliant.
The spec compliant mechanism is to use supplemental descriptor with
schemeIdUri: urn:mpeg:dash:adaptation-set-switching:2016 as specified
in ISO/IEC 23009-1:2014/Amd.4:2016.
Fixes#156
Change-Id: I4d97648547a23315ba9c09dcadb14e18c99a45fc
- nalu_data points to the beginning of the nalu, instead of
beginning of the slice header which excluded the nalu
header.
- nalu_size is the size of the whole nalu.
- header_bit_size calculation is corrected. The size used to exclude
emulation prevention bytes.
Change-Id: Ic00f42caeddf7b4701f3948e6ef8a3537fd7f770
- If OnEncryptionStart() is called OnMediaStart(), someone should be
calling NotifyEncrytionStart().
Fixes#169
Change-Id: I597f317d2ddeb3091b7e9d238eb9695b4cc9c69d
Three options are supported right now:
- reuse=1|0
Allow or disallow reusing UDP sockets. Default 0.
- interface=a.b.c.d
Address of the interface over which to receive UDP multicast
streams.
- timeout=microseconds
Timeout in microseconds. Default to unlimited.
A UDP url should be of the form udp://ip:port[?options], here
is an example:
udp://224.1.2.30:88?reuse=1&interface=10.11.12.13&timeout=12345
Also deprecate --udp_interface_address flag in favor udp options.
Closes#133
Change-Id: I962d35bfedc1779d67ba20ed910207c66b7c1a15
1. Allow encryption pattern of 0:0, which is treated as 1:0;
2. Remove the special handling of pattern 1:0 in pattern cryptor
which may not always be correct;
3. Allow senc/saio/saiz boxes to be absent.
Change-Id: I372e61182ec577107e39cb601c3aed80616b036d
The original code creates temporary file in the current directory,
which may not always be writable.
Change-Id: Icc278dd5db6be6206ae29defbb7423bae39cc978
- Also import the version of the protobuf bundled in packager first,
this avoids importing the installed version of the protobuf, which
may not be compatible with this script.
- Print help if no argument is supplied.
Fixes#162
Change-Id: I1b5e87ba7fb51e81b0d4dd3791aaeb37ee0fd6ce
Cues used to be generated in the end of the file; if http range
request is not supported, clients have to download the whole
file to get to the cues.
This CL updated TwoPassSingleSegmentSegmenter to write cues
after writing webm header.
This CL also updates libwebm dependency to latest.
Closes#159
Change-Id: Ic73548e1b872e6b13a37627707e7d0ff3e556877
The original code accumulates sample durations in seconds (double)
and then generates new segment / cluster by comparing the accumulated
value with configured value.
There may be loss of precision when accumulating values in double.
For example, with a GOP of 96 frames and frame rate of 24 fps; the
accumulated frame duration for 96 frames is 3.999999999999, which is
very close to 4.0 but not 4.0. Problem would arise if segment
duration is set to 4. The created segments would have a duration of
8 seconds instead of 4 seconds.
The new code accumulates sample durations in uint64_t relative to
input time scale; the configured segment duration will be converted to
timescale for comparison. This avoids loss of precision.
Change-Id: I3ae24be82a7ce45f923a6f90fea495b8b6b2e7ef
Setting this flag will tag any matching tracks with kRoleMain.
The player will then know which tracks should be default when there
is not a language match.
Closes#155
Change-Id: I827304c49e345d07b1e76f7a46421b60f228f0ba
Language tags can have subtags, such as "por-BR". While the base tag
should be 3 characters, the entire tag can be longer. Rather than
parse out the base tag and check that it is size 3 without the subtag,
we can just trust the ISO tag converter to do the right thing.
Change-Id: I2a186b5c8db0f373ee82ef68245ecc33cb068581
Some subtitle files use .webvtt instead of .vtt, probably because
ffmpeg uses -f webvtt when converting from some other format.
Change-Id: If88e8d2b90e5dea6751409568d5191e923dec4aa
- Also regenerated test content to insert an iframe every one
second: ffmpeg -i source.webm -auto-alt-ref 1 -g 30 out.webm
This makes sure the content is actually encrypted with one
second clear lead in end to end test.
Change-Id: I488143c148e2d6c45ba1586f6d0d835dc46db86e
- Add decrypt_config in media sample and stream.
- Update subsamples when converting NAL unit to bytestream.
Change-Id: I7b8975a453f81b22cf74bee3c9a58b7e458cbaae
1. Replace STLDeleter with unique_ptr in container, which is
supported in C++11
2. Replace string_as_array with &string[0] which is guaranteed
to work in C++11
Change-Id: I7f39c0e51fc8a3fcbb41313094a0ca6b33db7bf3
The current behavior of logging to a file in the same directory
as the binary will break if the binary does not have write access
to that directory.
Fixes Issue #139
Change-Id: I11adfaec676fc9bbef2a5caa3261889d1fba3b88
In H264, there may be multiple consecutive video slice NAL units
in the same frame. The original code assigns a new access unit
for every video slice NAL unit, which is incorrect.
Fixes#134.
Change-Id: I4d44271df48cb08867ddd02f7494fb3573af3356
Mimic iso-bmff behavior: either all the samples in a segment are encrypted
or all the samples are clear.
Change-Id: I03bdbbf5a4b690f4d87c4dceb0f8155e6fae941e
The right way to detect the presence of a keyframe in a BlockGroup
is to look for the absence of the ReferenceBlock element [1].
Closes b/30433206
[1] https://matroska.org/technical/specs/index.html#ReferenceBlock
Change-Id: I2b3c8704cbabcd5cbee38448e5528425865561a4
WebRTC portion (gyp build) now checked in because separate repository is no longer available due to transition to git.
Change-Id: I56436cbbc3f02a5f77112917d6229aea69f21d97
Also updated packager_test not to fill in output_format by default,
which will help catch these kinds of bugs.
Closes#130
Change-Id: I77157317de822d3f543f7e27d94bb4df7a1649d2
This flag is needed to workaround the Chromium bug
https://crbug.com/398130, which uses decoding timestamp
in buffered range.
Closes#113
Change-Id: Ib8f18be7165dd968bdc36c18ce29f694235c0c26
Packager should not care about this flag, whether it is supported
is up to the decoder.
Closes#126
Change-Id: I5e05d291eab01375f7f11c951b9dc93c1358c38a
- Add MuxerListener::OnEncryptionStart() for notifying that further
segments are encrypted.
b/29621230
Change-Id: I881b29d55baaf3d04e005a3b95d898071c3f272b
Seeing occasional build breaks when building hls_builder, e.g.
https://travis-ci.org/google/shaka-packager/jobs/143445907
Although hls_builder is dependent on widevine_pssh_data_proto
indirectly (through media_base), it does not work all the time.
Looks like the proto has to be a direct dependency.
Change-Id: Id4d9d0b9e669df0967cc767132ef29717243a722
- Try to determine container name from segment_template if output is
not specified
- segment_template descriptor is required for TS
- output descriptor should not be specified for TS
- Generate hls_playlist_name from stream number if not specified
- Update packager_test.py to include playlist validation
b/29551186
Change-Id: Ide7169f1c26c85a6e38272dda0e1af77135b4d90
- Cannot include PMT for following encrypted segments in the clear lead.
Some players consider them as conflicting codecs.
- Add EXT-X-DISCONTINUITY in front of first EXT-X-KEY to notify that the
codec is switching from e.g. "avc1" to "zavc".
b/29621230
Change-Id: I45c74813630c229d66245e992eb3a5117326bb14
Before, we converted the WebM configuration to MP4 in the video
client, however this lead to a bug when fields were missing. So
now don't convert until the cluster parser so the extra info from
the stream can be added.
This also fixes a bug where the value was not printed in the warning
logs.
b/29580732
Change-Id: If0a1a4d135f98292cdaae15a11027f42d844e85d
Since the |extra_data| field contains codec-specific configuration
data, it makes sense to call it |codec_config|.
Change-Id: If9e35165a00fe82628cf931df397a8ef06505b0d
Although superframe index is not encrypted, it should still be inserted
into subsamples list (with cipher_bytes as 0).
Change-Id: I06b38f8333a22a31a71cd67e0412218dd3aaa5c3
- Add flags and stream descriptor fields for HLS.
- Remove fields from MuxerOptions. Instead pass them directly to
HlsNotifyMuxerListener.
- Rebase segment names to the master playlist's path where it makes
sense.
Change-Id: If4f54bc56ff46dc6140859a79ed66f7b99112ed7
- Tracks other than video are protected using whole-block full-sample
encryption as specified in ISO/IEC 23001-7:2016(E) 9.7, which is
equivalent to a pattern of 1:0. This is different to the non pattern
encryption counterparts.
- Also updated the code to allow the existence of other protection
schemes in the original content, which will simply be ignored.
- The internal cryptor used by AesPatternCryptor should not use
constant iv, add a DCHECK for that.
- Optimize AesPatternCryptor handling on the special pattern 1:0.
Change-Id: Idc704e7bc6b347741336f38c6d3620fc19392960
Aaron Vaage
Widevine Buildbot
KongQun Yang
Ivan L. Isaev
David Cavar
Yohann Connell
Rintaro Kuroiwa
Haoming Chen
sylt
Zajcev Evgeny
Haoming Chen
sylt
Joey Parrish
Chun-da Chen
Kyle Alexander
sammirata
Thomas Inskip
Gabe Kopley
Jacob Trimble