hotkeys_missing_lines writes the shipped default of an action the file does not mention, but that
save records the hash of what it wrote, so the file was not reloaded and the action stayed unbound
until the file next changed. The bindings installed at startup and on reload now include those
defaults (hotkeys_with_missing_defaults), as in Ex4 1.47.2; a file of an older version still gets
"none". A logger test covers it.
- System sound: on / off (red while on) turns what the computer plays on and off while
recording, as Mic does the microphone; its state is saved as system_audio in [video].
- modules/Screen_Record: the microphone's switch is now one for either source:
record_set_audio, record_audio_on and record_audio_failed take an Audio_Source_Kind, and the
audio thread opens and closes each as it is turned on and off.
- record-probe -system-toggle. With -sync-test, system sound on at 3 s and off at 7 s keeps only
the beeps at 3 and 5 s (8-12 ms from their flashes), and the track runs the whole recording.
- The toolbar's Mic: on / off (red while on) turns the microphone on and off while recording;
its state is saved as microphone in [video] for the next recording. A microphone that cannot
be opened turns it off again, with a toast saying why.
- modules/Screen_Record: record_set_microphone, record_microphone, record_microphone_failed. The
audio thread opens the microphone only while it is on (so Windows shows it in use only then)
and closes it when turned off. Record_Options.audio_track gives the MP4 a sound track whatever
is on at the start, silent while nothing is, as one cannot be added once the header is
written; the app always asks for it. The sources heard and the failures are kept as they
happen, not only at the start.
- record-probe -mic-toggle: the microphone on at 3 s and off at 7 s. With system sound and with
nothing else on, the track runs the whole recording without a break.
- modules/Screen_Record/audio_source.jai: WASAPI, in loopback from the default output device
(what the computer plays) and from the default input device (the microphone), asked for as
48 kHz stereo float, which Windows converts any device to; a device that will not convert is
taken as it is when it gives 48 kHz float. Packets carry the time they were heard. A device
lost (unplugged, default changed) is opened again from the new default once a second.
- An audio thread mixes them onto the video's own timeline: the same time 0, less the same
pauses (record_pause now keeps one account of time paused for both threads). A packet within
30 ms of where its source left off follows on exactly; a source that sends nothing is silence,
passed 200 ms late. Each 1024 samples every source has covered become an AAC frame.
- encoder.jai: an AAC stream (FFmpeg's aac, 160 kb/s) beside the video, written from the audio
thread; both threads' packets meet in the file under a lock. The remux keeps it.
- [video] system_audio (true) and microphone (false). capture.json: Audio, AudioSources. A toast
when a source asked for could not be opened.
- record-probe: -audio system|mic|both, the sound read back (length, level), and -sync-test,
which flashes a white square and beeps together every 2 s, then finds both in the file.
- Measured: 20 s, beeps 0-21 ms from their flashes, no drift; both sources mixed, 5-18 ms;
a 6 s pause cuts the same 6 s from sound and video; 3 min, 85 of 90 beeps within 3-24 ms and
-14 ms from first to last, with 5 outliers (53-147 ms) where two beeps went missing. Tests:
an MP4 with sound keeps its AAC stream through the remux into the library (30 checks).
- src/app/screen_record_win32.jai: while recording, a red frame just outside the region (one
window shaped by a window region, clicks let through) and a toolbar beside it (below the
region at its right, else above, else inside a whole screen's top right): a blinking dot,
the time less time paused, the size, frames dropped and screen losses, and Pause/Resume,
Stop, and Discard, confirmed in the toolbar itself ("Yes, discard / No"). GDI windows that
never take the focus, kept out of every capture (WDA_EXCLUDEFROMCAPTURE). Buttons only ask;
screen_record_frame acts on the next frame. On the shutdown thread they are hidden, not
destroyed.
- modules/Screen_Record: record_pause; while paused the source is drained but nothing is sent,
and frames' times leave the pause out, so the video has no gap. Record_Stats.paused_seconds;
Record_Testing.LOSE_DUPLICATION loses Desktop Duplication every 3 s.
- Recordings left in %TEMP%/mcap by a crash are offered at startup: into the library (no window
known; size from its frames, date from its name), deleted, or later.
- [video] in settings.config: fps (1-120, 30), cursor (true), capture (auto, dxgi, wgc); written
into existing files on the next launch.
- The Win32 GDI bindings move to src/base/platform/win32_gdi_bindings.jai, shared by the overlay
and the toolbar.
- -record-region X Y W H and -record-ui-visible for -record; -pause SECONDS and -lose for
record-probe. capture.json's Paused.
- Checked: the toolbar is not in a whole-screen recording's frame; a 10 s pause leaves a 6.2 s
video of a 16 s run at a steady 30 fps (DXGI and WGC); 3 simulated losses in 10 s recover with
no gap. Tests: a leftover's date and its write (22 checks in the recording group); all pass.
- Fixed on the way: a recording's path repeated the temporary folder ("%1" is the first argument).
