* media: look up the track of each traf in a hash map
* media: bound Matroska indexing by a file-wide frame budget
Every indexed frame claims its stored bytes and at least one, so fixed-size
laces of empty frames cannot describe more frames than the file has bytes.
The frame count across tracks is capped at 2^26, the TrackEntry count at
2^16, and blocks find their track through a hash map.
* media: keep the spec spellings of Colour, ColourSpace and colourPrimaries
* media: PCM chunks stay bounded in MOV and MP4
The writer ends a PCM chunk at 1 MiB or half a second, and returns an
error past 2^32 - 1 samples in a track instead of clamping the stsz count.
The reader splits a PCM chunk above 16 MiB into several samples, so files
from writers without chunk limits read whole past 4 GiB. A sparse output
lets the tests write past 4 GiB, which also exercises the writer's co64
path.
* media: clamp max_lace_frames to 256 and round BlockDuration
* media: level-1 Matroska elements read at most the file's length in all
SeekHead entries pointing at nested elements made each one read the rest
of the file.
* media: set_sample_entry rejects a codec change
* media: the mux oracle compares stream counts before streams
* ci: media checkout does not persist credentials
* media: README lists the renames from FilmCraft and the output that differs on valid input
* media: rustfmt
* media: the stream count comparison leaves out timecode streams
* media: PCM chunks end at 1 MiB only, as ffmpeg's do
ffmpeg's PCM chunks run past half a second, so a duration limit split
remuxed chunks the source kept whole.
* media: frames and samples indexed scale with the file's length
Matroska indexes at most one frame per 8 bytes of file and ISO BMFF at most
one sample per 4 bytes, beyond the first 2^20 of each, so the sample tables
stay within about ten times the file's size. Empty fixed-size laces and
one-byte constant-size samples could make them 40 to 76 times its size.
* media: clamp the frame and sample allowances
Pin third-party actions to full-length commit SHAs (with version comments)
instead of mutable tags/branches to prevent supply-chain tampering via
retagged releases. Resolves SonarCloud rule githubactions:S7637.
* media: add craft-media with bitstream and isobmff from FilmCraft
Moves filmcraft-bitstream and filmcraft-isobmff (storytold/filmcraft@6c3948a)
into one crate with a feature per module. The public API matches FilmCraft's so
its crates can become re-exports. Tests, oracle tests and fuzzing come along;
the ffmpeg discovery helpers replace filmcraft-testkit.
Out-of-contract inputs no longer panic: bit widths above 32, a zero NAL length
prefix width, and PCM frame sizes that overflow u32. Adds
BitReader::read_ue_plus from DeckCraft's copy.
* media: public ISO BMFF box reader (isobmff::boxes)
Make the demuxer's box iterator and big-endian reader public as
isobmff::boxes::{BoxIter, BoxRef, BoxHeader, Reader}, for walkers of
boxes the demuxer does not model (CR3 uuid boxes, HEIF meta items,
JPEG 2000). BoxIter::within keeps offsets relative to the outer slice,
and allow_truncated yields a cut last box. The fuzz test walks every
box of each mutated file.
* media: matroska feature from FilmCraft's filmcraft-matroska
Port storytold/filmcraft@6c3948a crates/matroska as craft_media::matroska
behind the opt-in feature matroska, with the same public API so FilmCraft
can make filmcraft-matroska a re-export. Its unit and ffprobe oracle tests
come with it, on craft-media's test helpers.
From DeckCraft's copy: cluster and block timestamps no longer overflow;
they saturate at i64::MAX. MuxingApp and the default WritingApp name
craft-media. New tests: block additions and mutation fuzzing. The oracle
skips the duration of a track's last packet when ffmpeg 8 shortened it.
* media: MOV PCM uses lpcm v2 above 16.16 rates and for unsigned 16-bit; signed 8-bit as twos
Version 0 sound descriptions store the rate as 16.16 fixed point, so 88.2 kHz
and higher were written as 0 Hz. 8-bit signed PCM was labelled raw (unsigned)
and 16-bit unsigned as twos/sowt (signed). The reader also took raw under a
sound handler for uncompressed video.
* media: stop the top-level box scan at a box that runs past the end of the file
A 64-bit box size near u64::MAX saturated the scan offset, and the next
offset + 8 overflowed.
* media: one sample budget for the whole ISO BMFF file
The sample cap and the file-length bound on samples without table entries
(constant-size stsz, trun without per-sample fields) applied per track or
per trun, so repeating a small trak or trun multiplied the allocation.
Both are now shared by all tracks and fragments.
* media: set_sample_entry rejects entries that change the track's media type or PCM frame size
The handler, stsz constant size and PCM timescale check are fixed at add_track;
a replacement that changed them produced a corrupt file. A bad track index
returns NoSuchTrack like the other writer methods.
* media: saturate the sample end in MkvFile::duration_ns
Cluster timestamps saturate at i64::MAX, so pts + duration could overflow
for files without Info/Duration.
* media: checked add for the Matroska cue cluster position
CueClusterPosition comes from the file; an add past u64::MAX panicked in
debug builds and wrapped in release. Such a cue now falls back to the index.
* media: cap the Matroska TimestampScale at 2^32 and saturate tick conversions
A scale near 2^64 overflowed u128/i128 in the per-lace split and in
Track::ticks_to_ns. A BlockDuration near u64::MAX also overflowed the tick
difference at the default scale. Larger scales are ignored like a zero scale,
and tick and nanosecond values outside i64 saturate.
* media: Matroska fixture generation no longer truncates the shared subtitle inputs
Parallel tests generating subs.mkv or webvtt.webm could read in.srt or in.vtt
while another thread rewrote it, and cache a fixture with missing packets.
* media: rustfmt parse_moof signature
* ci: add craft-media workflow covering feature sets, WASM and ffmpeg oracles
The lint job runs fmt, clippy for each feature set (none, bitstream,
isobmff, matroska, all) and a wasm32 check. The test job runs the
all-features tests with Ubuntu's ffmpeg and CRAFT_MEDIA_REQUIRE_ORACLES=1,
installing ffmpeg while the tests compile.
* media: Matroska lacing keeps timestamp gaps
A laced frame's timestamp is implied by the block's and the track's
DefaultDuration, so lacing collapsed gaps in the input. A frame now joins
a lace only when that implied tick equals its own, and tracks without a
DefaultDuration do not lace. The laced remux oracle compares timestamps.
* media: required oracles fail on fixture generator and ffprobe failures
Every path that gave up on an oracle check (missing tool, failed fixture
generator, failed ffprobe run) goes through one helper that prints
SKIPPED, or fails the test with CRAFT_MEDIA_REQUIRE_ORACLES=1. Fixture
generators of both containers share run_generator, which takes the
required flag explicitly so tests can exercise it without changing the
process environment.
* media: use US spelling
* media: a failed ffprobe probe skips the optional oracle check
* media: the Matroska oracle compares the last subtitle cue's duration
dependabot[bot]
aiongg
Dylan M. Taylor