Tests only, plus docs; the encoder does not change. Each new check was
confirmed to fail on a mutated encoder.
- Tests: frame numbers count up, LPC and Rice partitions and stereo
decorrelation save the space they should, FileEncoder records a FLAC
layout, the smallest frame anywhere reaches STREAMINFO, Writer::write
applies the frame limit, finish leaves the sink at the end, the exact
655350 Hz cap, the sample size codes.
- README limits: a FLAC layout decoders would not assume depends on its
mask comment, and ffmpeg and flac ignore a zero mask.
- The encode example's comment named no referent.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
FilmCraft's FLAC encoder behind `flac-encode`, kept over SoundCraft's:
linear prediction, stereo decorrelation and the STREAMINFO MD5 give
0.1-37% smaller files on 12 test signals, and the output is bit-exact
through `flac` and ffmpeg. It is 3-5x slower than SoundCraft's, still
about 56x real time.
`lossless-encode` is now `pcm-encode` plus `flac-encode`, and
`EncodeFormat::Flac` writes it through `encode` and `FileEncoder`.
With only one of the two features, the other's formats are refused as
`Unsupported`.
The tests that use FLAC files as decode fixtures (truncation,
corruption, metadata bounds, zero-frame files, container preflight)
come with it, as do the FLAC oracle tests.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* craft-audio: core types, WAV/AIFF read and write, peaks, symphonia
The new crate without any codec module: what every later codec plugs
into.
- Shared types: `AudioBuffer`, `AudioInfo`, `ChannelLayout`/`Speaker`,
`AudioError`, `EncodeOptions` (built with `new` and `with_*`),
`EncodeFormat`, `BitDepth`, `BwfInfo`, `SampleFormat`.
- WAV/BWF/RF64 and AIFF/AIFF-C reading and writing from SoundCraft's
`soundcraft-audio-io`, kept over EffectCraft's and FilmCraft's
smaller writers (only it has BWF, dither, any speaker mask and
streaming without a known length). `encode` and `FileEncoder` behind
`pcm-encode`; `lossless-encode` and `encode` turn it on.
- `decode`, `probe`, `tracks` and the streaming, seekable `Decoder`
(feature `decode-native`). The native path reads WAV, AIFF, and PCM in
MP4/MOV and Matroska through craft-media's demuxers, packet by packet,
with edit lists and `CodecDelay`/`DiscardPadding` applied.
`TrackDecoder` decodes PCM; each codec PR adds its codec to it.
- symphonia 0.6 (MPL-2.0, used unmodified) behind the `symphonia`
feature, part of `decode`: the fallback for every format with no
native decoder yet. Its size fields are checked before it reads, and
its panics are caught where they unwind.
- `peaks`: the min/max/RMS pyramid for waveform drawing.
Workspace: craft-media is a workspace dependency without default
features, so an encode-only craft-audio does not build the MP4
demuxer, and `symphonia-bundle-flac` builds without overflow checks in
dev profiles (its 32-bit LPC restore wraps on valid input).
CI: `audio.yml`, with clippy per feature, rustdoc, WASM, MSRV, and the
tests with ffmpeg oracles.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* craft-audio: review fixes (CodeRabbit on #441)
- Reading: AIFF that declares frames without an SSND chunk is Malformed; a Matroska PCM track's
length counts from its first frame; seek targets saturate; an empty FLAC has one track; a
failed header read is an Io error; deinterleave allocates fallibly; concealed silence is capped
like a decoded packet, and symphonia's uses the damaged packet's own duration when known.
- Peaks sum squares in f64, so loud float samples give a finite RMS.
- Writing: .aifc maps to AIFF; BWF text is cut at a character boundary; a WAV byte rate past
32 bits is an error; the FileEncoder docs say nothing may follow the sink's position.
- README: the Limits list says which codecs go through symphonia and which MP4 edit lists apply.
- Tests for each, alias and dither coverage, and a FLAC case in the routing oracle.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* craft-audio: review fixes, second round (CodeRabbit on #441)
- Every header read is checked: `Native::open`, `native::tracks` and the no-symphonia error read
it with `head_checked`. craft-media demuxer errors that are I/O failures (not a file ending
early) are returned as `AudioError::Io` instead of sending the file to the other path.
- A Matroska track's presented length runs from its first frame plus `CodecDelay` (unclamped,
in timestamp ticks with the delay rounded to one) to its end.
- symphonia's concealment allocates fallibly, and a damaged first packet is concealed when the
demuxer gives its duration. `deinterleave` reserves its channel list fallibly too.
- `TrackDecoder::conceal` documents its cap at the decode limit.
- Tests: an I/O failure past the first 64 KiB, codec delay with the first block at -20, 0 and
50 ms (checked with `probe`), a seek back after an overshoot, and the loud-sample RMS value.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* craft-audio: TrackDecoder::conceal returns a Result
Concealment allocates fallibly and fails with TooLarge when the silence would pass the 2^30-sample
decode limit, instead of returning less than the packet's length. The native path, the README,
the packets example and the doc example pass the error on.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* craft-audio: review fixes, third round (CodeRabbit on #441)
- Concealed silence is held to the decode limit inside pcm::silence, so symphonia's path checks
frames × channels too, and symphonia's decoded audio is copied into fallibly allocated planes.
- TrackDecoder::reset forgets the last packet's length.
- Without symphonia, a damaged MP4, Matroska or Ogg file (truncated, invalid, no moov) is
Malformed instead of Unsupported; a feature the demuxer does not read still names the build.
- Tests: an MP4 with no moov in a native-only build, conceal after a reset and past the limit.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* craft-audio: review fixes, fourth round (CodeRabbit on #441)
- A file the native demuxers find damaged is Malformed with symphonia too, when symphonia calls
it unsupported; before, an ftyp-only MP4 was Unsupported in symphonia builds.
- symphonia's decoded blocks are held to the 2^30-sample decode limit before allocating.
- Symph::seek forgets the last packet's length, so a lost packet after a seek is not concealed
with the length of one before it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* craft-audio: review fixes, fifth round (CodeRabbit on #441)
- The damaged-file test covers Matroska as well as MP4, and fails when either branch of
native::damage is removed.
- native::damage leaves out Ogg: ogg::open reports no damage (it skips damaged pages and calls a
file with none it can read not Ogg), and symphonia reports damaged Ogg as malformed itself.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* craft-audio: run the ffmpeg oracle tests on ubuntu-26.04
ubuntu-latest's apt ships ffmpeg 6.1.1, which writes MP2 and E-AC-3 in
Matroska with ends a few milliseconds early, so the routing tests on the
later codec PRs cannot pass on it. ubuntu-26.04 ships ffmpeg 8.0.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
alehelandClaude Opus 5.5