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craft-math-function-scripts
3
Commits
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ca53e90b18 |
craft-audio: MP1/MP2 decoder (#448)
FilmCraft's MPEG audio Layer I/II decoder as `craft_audio::mpa` behind `mpa-decode`, kept over symphonia's: the same quality where both decode, and it also decodes the MP2 files ffmpeg writes by default (mono at 384 kbit/s), which symphonia rejects. `TrackDecoder` and the native read path take MP1/MP2 in MP4, Matroska and raw streams; symphonia keeps MP3 only, so its `mp1` and `mp2` features are dropped. Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com> Co-authored-by: Dylan M. Taylor <dylan@dylanmtaylor.com> |
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b1c64766e6 |
craft-audio: AC-3 and E-AC-3 decoder (9/10) (#447)
* craft-audio: AC-3 and E-AC-3 decoder FilmCraft's AC-3 decoder as `craft_audio::ac3` behind `ac3-decode`: every AC-3 channel mode and frame size, and E-AC-3 independent substream 0 with spectral extension, in WAV order without downmix. `TrackDecoder` and the native read path take AC-3 and E-AC-3 in MP4, Matroska and raw streams. Not bit-exact: zero-bit mantissas are filled with decoder-specific dither (A/52 §7.3.4), so tests compare at 65-94 dB SNR on tones and 27-48 dB on white noise. 7.1 E-AC-3 decodes as its 5.1 core. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * craft-audio: review fixes, round 1 (#447) An AC-3 / E-AC-3 packet is as long as all the primary syncframes in it. Before the first decode, TrackDecoder::frames_per_packet gave 1536 for any AC-3 track, and conceal used the first syncframe's header only. An E-AC-3 stream of one-, two- or three-block syncframes then got the wrong MP4 length and seek positions and the wrong Matroska positions. A packet that groups several such syncframes concealed at a fraction of its length. Seeks in AC-3 and E-AC-3 now have to match the whole-file decode bit for bit, as every other codec's do. The dither is seeded from each syncframe, so the old 25 dB bound was looser than the decoder needs. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * craft-audio: review fixes, round 2 (#447) - AC-3 / E-AC-3 packets that decode to different lengths (in the packets read ahead, or any decoded since) have no frames_per_packet, so a Matroska seek finds its packet by timestamp rather than by index times the first packet's length. - E-AC-3 syncframes of fewer than six blocks may reuse exponents from any syncframe before them: once one is seen, a seek decodes from the start of the stream instead of 1536 frames before the target. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * craft-audio: review fixes, round 3 (#447) - Matroska E-AC-3: the first seek reads every packet's syncframe headers (only the headers, header stripping undone) and places packets by the frames their primary syncframes hold. Packets that started to differ in length after the eight read ahead were placed as the first packet's length times their index. - A packet whose later syncframe fails no longer sets the length lost packets are concealed at, nor marks the packets' lengths as differing: it decoded only in part. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * Merge main; E-AC-3 in Matroska: read packet headers only up to the seek target, and count a packet of dependent syncframes as zero frames --------- Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com> Co-authored-by: Dylan M. Taylor <dylan@dylanmtaylor.com> |
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Aleksander HelgakerandClaude Opus 5.5
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38740b43a9 |
craft-audio: core types, WAV/AIFF read and write, peaks, symphonia (#441)
* 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> |