92b7395ba991e4eac8f3d93549b2f866c67f22fa
13
Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
  JMR-devandClaude Opus 5
|
92b7395ba9 |
Media3 can only write MP4, so stop claiming otherwise
CI proved the WAV and Ogg exports this branch added cannot work, and the reason
generalises further than those two.
media3-muxer 1.11.0 ships WebmMuxer, OggMuxer, WavMuxer and AacMuxer, which is
why MEDIA3_CONTAINERS listed the matching containers. But all four throw
UnsupportedOperationException from addMetadataEntry, and
MuxerWrapper.addTrackFormat calls it for every metadata entry on the track
format. Any real recording carries at least a creation timestamp, so the export
dies partway through:
Caused by: java.lang.UnsupportedOperationException
at androidx.media3.muxer.OggMuxer.addMetadataEntry(OggMuxer.java:123)
at androidx.media3.transformer.MuxerWrapper.addTrackFormat(MuxerWrapper.java:488)
They are standalone muxers, not Transformer-compatible ones. WAV fails a second
way before even reaching that: DefaultEncoderFactory has no PCM encoder, so
Transformer reports "No MIME type is supported by both encoder and muxer"
instead of passing raw samples through.
Both observed on an API 35 emulator in CI, not inferred. The tests that found
them were written on the assumption these containers worked.
So MEDIA3_CONTAINERS becomes {MP4}. That the set was wrong went unnoticed
because the engine ignored the container and wrote MP4 regardless — the set
being wrong and the engine being wrong cancelled out. WAV, Opus and raw AAC move
to FFmpeg, which already produces all three with instrumented coverage asserting
the produced files.
WEBM_VP9's routing reason changes from NO_PLATFORM_ENCODER to
CONTAINER_UNSUPPORTED. Both were always true; the container is the more
fundamental, since even given a VP9 encoder the file could not be written.
The audio-only regression guard this branch exists for passed on API 35: M4A
output now carries exactly one AAC track and no video.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
|
||
|
JMR-devandClaude Opus 5
|
00c422f317 |
Make Media3 write the container and codec it was asked for
Media3Engine never called setMuxerFactory or setAudioMimeType, and built a bare EditedMediaItem, so it always produced MP4 with an H.265 video track. The router meanwhile sends it WebM, Ogg, WAV and AAC-ADTS jobs, plus audio-only M4A, Opus and WAV — and ConversionWorker.media3MimeType() mapped VideoCodec.NONE through its else branch to VIDEO_H265. The visible result: "extract audio to M4A" transcoded the video to HEVC and named the file .m4a. Nothing failed, and nothing caught it, because Media3EngineTest had no audio-only case at all. media3-muxer already ships WebmMuxer, OggMuxer, WavMuxer and AacMuxer; only the MP4 ones come pre-wrapped as a Muxer.Factory. Media3Muxers supplies the rest. Their reported sample MIME types are read from each muxer's own support check rather than assumed, because Transformer uses those lists to decide whether a track needs re-encoding. HardwareTranscoder.transcode now takes the OutputFormat instead of a video MIME string, which is what gives the container, the audio codec and "this output has no video" somewhere to travel. MEDIA3_CONTAINERS stops being private so a test can assert it agrees with the factories. Those two drifted once already: the router's set was right the whole time the engine was ignoring it. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
||
|
JMR-devandClaude Opus 5
|
dd2fcf0a19 |
Rename the project to LibreMediaConverter
Done now rather than later: the application ID is permanent once published -- Play treats a change as an entirely different app -- so this is the last cheap moment to choose it. applicationId / namespace dev.jasonmross.mediaconverter -> org.libremediaconverter source tree java/dev/jasonmross/mediaconverter -> java/org/libremediaconverter gradle project AndroidMediaConverter -> LibreMediaConverter theme Theme.MediaConverter -> Theme.LibreMediaConverter compose theme MediaConverterTheme -> LibreMediaConverterTheme display name "Media Converter" -> "LibreMediaConverter" org.* rather than dev.jasonmross.* because "Libre" signals a project rather than a personal app, and a project-owned namespace lets maintainership move later without the identifier contradicting reality. The source trees moved with git mv so history follows the files instead of showing 42 deletions beside 42 additions. Verified after the rename: 66 unit tests, and 40 instrumented tests on an API 36 emulator, 0 failures. The built APK reports org.libremediaconverter, and no stale jasonmross, AndroidMediaConverter or MediaConverterTheme identifiers remain anywhere in the tree. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
||
|
JMR-devandClaude Opus 5
|
99bd961022 |
Force the last five failure branches
The previous commit called five branches unforceable. That was wrong on all five, and the reasoning behind it was lazy rather than investigated. Three were described as needing a SAF grant revoked mid-job. They do not: a content URI whose authority does not exist reaches exactly the same null branch as one whose permission was withdrawn, and constructing one is a single line. That now covers the conversion input, the join inputs, and the publish destination. One was described as unreachable through ConcatWorker.request(). True, but irrelevant -- a worker is just input Data, and WorkManager will run one built without the input array. That is also what a version-skewed queue entry would look like after an app update, so it is worth covering rather than dismissing. One was described as Media3-internal. An output path whose parent directory does not exist makes Transformer.start() fail synchronously, and the engine has to surface that as a rejected suspension. The test asserts specifically that it is not a timeout: hanging would be far worse than throwing, because the worker would sit holding a foreground service indefinitely. The assertions check outcomes rather than exception types. Whether a resolver returns null or throws is a provider implementation detail; what matters is that the job fails cleanly and carries a message, instead of taking down the worker. Every failure branch in the conversion and join paths is now forced. 40 instrumented tests on a Pixel 10 Pro XL and 66 unit tests, 0 failures, with the only skips being the opt-in benchmark. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
||
|
JMR-devandClaude Opus 5
|
83fb55515b |
Add a seam for forcing failure paths, and force thirteen of them
Error handling was the least-tested code in the app. It only runs when something goes wrong, which is exactly what a healthy test run avoids, so the branches a user meets on a bad day were the ones that had never executed. An audit put it at 4 of 18 fallback branches actually forced by a test. There was also no mechanism to do better: ConversionWorker constructed Media3Engine and FFmpegEngine directly, so no test could make either of them fail. Media3Engine and FFmpegEngine now implement HardwareTranscoder and SoftwareTranscoder, and ConversionDependencies holds the factories. Workers are built by WorkManager and the app deliberately carries no DI framework, so a small settable holder is the least machinery that does the job. The foreground-service timeout needed different treatment. Its trigger is the six-hour-per-day budget expiring, which no test can reach, so the decision moved out of the worker into FailureOutcome. The rule is now verified on the JVM across every WorkInfo stop reason, including that only the timeout earns a retry -- retrying a user cancellation would ignore the user, and retrying a constraint failure would spin. Thirteen branches are now forced, including both free-space prechecks, both engines failing, a missing input, and the router bypassing hardware entirely for MP3. The dynamic fallback is covered twice over: once by injection, and once by HardwareFallbackTest driving it with genuinely undecodable 4:4:4 footage. Injection alone would prove the plumbing without proving the condition ever arises in reality. Five remain unforced and are listed in ConversionDependencies' documentation. They need a SAF grant to be revoked mid-job, which is not something a test can arrange. Media3EngineTest now asserts against the muxed file rather than the engine's own ExportResult, which is a stronger check anyway: a result object can report success for a file that will not play. 35 instrumented tests on a Pixel 10 Pro XL and 66 unit tests, 0 failures. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
||
|
JMR-devandClaude Opus 5
|
ec6e37ad08 |
Stop selecting FFmpeg's MediaCodec encoders, and pin the pixel format
Testing on a Pixel 10 Pro XL with real footage found two defects that neither the emulator nor any unit test could surface. The sample is H.264 High 4:4:4 Predictive (avc1.F4001F). Media3 cannot decode it on any device: hardware AVC decoders implement High 4:2:0, and Android's software c2.google.avc.decoder does not cover 4:4:4 either, so the export dies with a codec exception. The static routing rules cannot predict this -- the container is MP4, the codec is "h264", and the device reports AVC decode and encode -- so it is exactly the case the runtime fallback exists for. Until a file like this was tried on hardware, that fallback had never actually fired. Following it through exposed the two bugs behind it. First, only one video encode path named a pixel format. FFmpeg decodes 4:4:4 to yuv444p and hands those frames to encoders that cannot accept them; naming yuv420p makes it insert the conversion instead. Every path now does. Second, and not fixed by that: hevc_mediacodec still failed with "Error submitting video frame to the encoder". That is the second distinct failure from FFmpeg's MediaCodec wrappers in one session -- the first being that on a device with no hardware encoder they silently bind to the platform software codec and crawl while presenting as the fast path. They are undocumented, per-device flaky, and duplicate badly something Media3 already does properly. A job only reaches FFmpeg because Media3 could not handle it, which is itself evidence hardware encode is unlikely to work for that input. So FFmpeg now always encodes in software, and Fast means a fast preset rather than a different encoder: libx264/libx265 at veryfast against medium, both with CRF. With that, the fallback completes and the file converts. Measured on the Pixel: AV1 1080p through the hardware path runs at 7.9x realtime, confirming the figure the two-engine design was based on; software x264 CRF at 720p runs at 4.4x. Hardware encoders present are av01, avc and hevc -- AV1 encode included, which is still rare. 29 instrumented tests pass on device, 63 unit tests on the JVM. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
||
|
JMR-devandClaude Opus 5
|
e5f274183c |
Match the Join tab to the converter's empty state
Applies the same treatment to the Join tab: label and button centred on both axes, button filling the width at 56dp tall, and the same asymmetric screen padding. An empty state that looks different depending on which tab you are on reads as a bug rather than as variety. The two shared dimensions move into ui/Dimens.kt rather than being duplicated per screen, so the tabs cannot drift apart later. Verified on an API 37 emulator: both tabs now present an identical empty state. 65 unit and 17 instrumented tests still pass. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
||
|
JMR-devandClaude Opus 5
|
a8fa3aecdf |
Centre the empty state and widen its primary button
Splits the converter screen into a fixed header and a body region that behaves differently per state. The empty state centres its label and button on both axes in whatever space is left; the working states keep scrolling, since format pickers and progress can exceed the screen and centring content that overflows would push it out of reach. The primary button now fills the width and stands 56dp tall rather than the Material default of 40dp, so it reads as the main affordance instead of a small control adrift in an otherwise empty screen. Horizontal screen padding drops to 16dp while vertical stays at 24dp, which is what lets a full-width button sit close to both edges. Both dimensions are named constants rather than inline numbers, because the same treatment is applied to the primary action in every other state. No theme changes were needed. Dark mode already tracked the device: the Compose theme reads isSystemInDarkTheme() and the activity theme has a values-night variant. Verified on an API 37 emulator by toggling `cmd uimode night` and capturing both -- mean luminance 245/255 in light against 18/255 in dark, with the button recolouring and status bar icons inverting correctly. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
||
|
JMR-devandClaude Opus 5
|
2fcacd199c |
Use a real software encoder when the device has none in hardware
Running the device suite for the first time surfaced a defect the unit tests could not: FFmpeg's *_mediacodec wrappers do not fail on a device without a hardware encoder. They quietly bind to the platform's software codec (c2.android.hevc.encoder on the test emulator) and encode far slower than libx264 or libx265 would, while still presenting as the fast path. A three second 320x240 clip did not finish inside a three minute timeout. The Fast tier now checks whether a hardware encoder actually exists for the target codec, and falls back to libx264/libx265 on -preset veryfast when one does not. That is both quicker and honest about what it is doing, and the distinction between Fast and Best survives the fallback: veryfast against medium, rather than both collapsing to the same slow path. The routing itself was already correct. The capability probe rightly rejects c2.android.* as software-only, so the job was correctly sent to FFmpeg -- the test asserting Media3 was encoding an assumption about the machine it ran on. It now derives its expectation from the device, so it means the same thing on hardware with a real encoder and on an emulator without one. Verified on an API 37 emulator: 17 of 17 instrumented tests pass in 4.2s, against six minutes of timeouts before. 65 unit tests still pass. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
||
|
JMR-devandClaude Opus 5
|
0c352cdcfb |
Route conversions between hardware and software engines
Adds the second engine and the rules that choose between them, turning a
video transcoder into a converter.
The router encodes capability boundaries, not preferences. Media3 handles
what it genuinely can and FFmpeg takes the rest:
MKV, and any container Media3 cannot mux
MP3, which Android cannot encode at any API level -- a platform gap
rather than a Media3 limitation
GIF and PNG frame sequences, which have no Media3 muxer
VP9 and AV1 targets: Transformer.setVideoMimeType accepts only
H.263/H.264/H.265/MP4V, so the WebM muxer has no encoder behind it
inputs with no platform decoder, since Transformer ignores ExoPlayer's
bundled software decoders and the dav1d extension does not rescue it
the Best quality tier, because CRF and two-pass come from x264/x265 and
no Android hardware encoder exposes either
Rule order matters and is deliberate: specific reasons are checked before
general ones because the reason is shown to the user. "Android has no
encoder for this format" is actionable for MP3; "this container needs
FFmpeg" is not. A test caught the original ordering getting this backwards.
Hardware support is vendor-declared and, per the platform's own docs,
"cannot be tested for correctness", so the static rules are backed by a
dynamic fallback: a Media3 export that fails is retried on FFmpeg rather
than surfaced as a failed conversion.
Joining files chooses between a stream copy and a re-encode by inspecting
the inputs. The concat demuxer requires matching codec, resolution and
timebase, and does not reliably fail when they differ -- it can emit a file
whose later segments are garbled. Unknown properties count as a mismatch,
because two nulls are not evidence of agreement.
The UI surfaces the routing decision rather than hiding it, so a slow job
explains itself, and offers a per-job engine override.
Navigation is adaptive: a bottom bar on phones, a side rail on wider
screens. Not cosmetic -- from targetSdk 37 Android ignores screenOrientation
and resizableActivity on displays at least 600dp wide, with no opt-out, so
the app is resized whether or not it is ready.
62 unit tests cover the routing matrix, the FFmpeg argument builder and the
concat planner on the JVM, against fabricated device profiles so branches
like "this device cannot encode HEVC" are reachable without that hardware.
Device-level tests for the FFmpeg formats are written but not yet run; the
emulator in this environment will not stay up.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
|
||
|
JMR-devandClaude Opus 5
|
e84ab6a89d |
Run conversions as durable foreground work
Conversions now go through WorkManager instead of a viewModelScope coroutine,
so a job outlives the ViewModel, survives process death, and keeps running
when the user leaves the app.
The foreground service type needs three branches across the supported range,
which is why ConversionForegroundType exists rather than a constant:
API 33 no type is required at all
API 34 a type is mandatory, but mediaProcessing does not exist yet, so
dataSync is the only sensible fit
API 35+ mediaProcessing, whose own documentation describes it as
"converting media to different formats"
The manifest declares both types on WorkManager's SystemForegroundService
via tools:node="merge" -- setForeground runs *that* service, not one of
ours, so declaring the type on an app-owned service would have no effect.
The manifest cannot branch on API level, so the runtime picks which type is
actually passed.
Both types share a budget of six hours per twenty-four across the whole app.
When it runs out WorkManager reports STOP_REASON_FOREGROUND_SERVICE_TIMEOUT,
which the worker translates into Result.retry() rather than a failure: the
work is still valid, there is simply no budget right now. The UI surfaces
that as a distinct Waiting state that explains the pause instead of showing
an error.
Expedited work is deliberately not used. It maps to JobScheduler expedited
jobs with a short quota, which is the wrong shape for a multi-minute
transcode.
POST_NOTIFICATIONS is requested when the user taps Convert, not on first
launch, so the ask arrives with visible justification. The conversion starts
either way -- without the permission the foreground service still runs, but
its progress notification is confined to the Task Manager rather than the
shade. Notification updates are throttled to roughly one per second because
progress updates arrive far faster than the system UI can absorb.
Tests run against the real WorkManager rather than a test double,
specifically so setForeground and the declared service type are exercised on
a device that enforces them. Verified on an API 37 emulator: the service
starts, and logcat shows no type or permission exceptions.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
|
||
|
JMR-devandClaude Opus 5
|
e4efa8a74a |
Add Media3 hardware conversion path with end-to-end tests
First working conversion: SAF input -> hardware transcode -> staged cache file -> SAF export, driven from a Compose screen. Media3 Transformer is the engine for this path rather than FFmpeg. It is Apache-2.0, needs no native build, consumes content:// URIs directly, and runs MediaCodec decode -> GL surface -> MediaCodec encode without frames round-tripping through the CPU. FFmpeg remains necessary for the long tail (MP3, GIF, MKV, exotic containers) but is not the right tool here. Two hazards are designed against rather than discovered later: Transformer must be driven from a single thread that has a Looper, and start()/cancel() throw IllegalStateException from anywhere else. The Looper it binds to is whichever the Builder saw, silently falling back to the main one. A WorkManager Worker runs on a Looper-less executor thread, so the naive arrangement builds against the main Looper and then throws on start. Media3Engine owns a dedicated HandlerThread, passes its Looper explicitly, and marshals every call onto it, so callers get a plain suspending function and cannot reintroduce the bug. Media3EngineTest covers this directly by driving a conversion from a Looper-less thread. Output never goes through a SAF file descriptor. MP4 faststart rewrites the moov atom at the end and needs to seek backwards, which a SAF fd does not reliably support. OutputPublisher stages to app-private cache, a real POSIX path, and copies out afterwards. That costs transient double disk usage, so it checks free space before starting. Input uses ACTION_OPEN_DOCUMENT rather than the photo picker: the picker is images and video only, offers no audio at all, and does not reliably surface .mkv/.flac/.webm. SAF needs no runtime permission. Tests run on an API 37 emulator and assert the output codec by reading the muxed file with MediaExtractor, so a silent fallback to H.264 fails rather than passing. Progress reporting is deliberately not asserted as non-empty: a 3 s fixture can finish inside one 250 ms poll tick, which would be an intermittent failure rather than a real defect. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
||
|
JMR-devandClaude Opus 5
|
48f65f0941 |
Replace scaffold with Compose/Material 3 base and project identity
The generated scaffold was a Views-based Material 2 shell with no activity,
no Kotlin sources, and a placeholder package. Replace it with the real base
the conversion work builds on.
Build configuration, with three AGP 9 specifics that contradict most
tutorials still in circulation:
- AGP 9 has built-in Kotlin. Applying org.jetbrains.kotlin.android now fails
the build, so the absence of that plugin is deliberate, not an oversight.
- The Compose compiler plugin is still separate and must be applied, pinned
to 2.2.10 to match the kotlin-gradle-plugin AGP 9.3.1 brings transitively.
Pinning it to the newest Kotlin release instead would mismatch.
- android.kotlinOptions {} was removed; jvm configuration moves to a
top-level kotlin { compilerOptions {} }.
Java compatibility goes 11 -> 17 (AGP 9 requires JDK 17), abiFilters
restrict packaging to arm64-v8a and x86_64, and jniLibs packaging is set
uncompressed so the APK zip-aligns native libraries on 16 KB boundaries.
Every dependency version in the catalog was checked to resolve against
Google Maven rather than copied from documentation. Note that KSP has moved
to standalone versioning (2.3.11) and no longer uses the old
<kotlin>-<ksp> scheme; it is catalogued but left unapplied until Room lands.
Set applicationId to dev.jasonmross.mediaconverter. com.example.* is
rejected by the Play Console, and the application ID is permanent once
published, so it has to be right before the first upload. The display name
is just a string resource and stays changeable.
Document the split license posture: source is MIT, but the distributed
binary will be GPL-3.0 because it bundles FFmpeg built with x264/x265.
LICENSES/README.md records why, including that libass is ISC rather than
GPL, so subtitle burn-in is not what forces the GPL choice.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
|