feat(tools): record a live watch session

tools/record-watch.sh

@@ -0,0 +1,62 @@
+#!/usr/bin/env bash
+source "$(dirname "${BASH_SOURCE[0]}")/record-lib.sh"
+
+GEOMETRY=${GEOMETRY:-1280x720}
+SRC=${SRC:-$HOME/projects/xmm0club/rackvm}
+OUT="$ROOT/assets/watch.mp4"
+WORK=$(mktemp -d)
+
+cp -a "$SRC" "$WORK/rackvm"
+rm -rf "$WORK/rackvm/build" "$WORK/rackvm/.git"
+mkdir -p "$WORK/bin"
+ln -sf "$ROOT/meowc" "$WORK/bin/meowc"
+(cd "$WORK/rackvm" && PATH="$WORK/bin:$PATH" meowc -q build >/dev/null 2>&1)
+tmux -L meowcrec kill-server 2>/dev/null || true
+printf 'set -g status off\nset -g pane-active-border-style fg=colour240\nset -g pane-border-style fg=colour240\n' > "$WORK/tmux.conf"
+
+start_xvfb "$GEOMETRY"
+
+kitty \
+    --config "$HOME/.config/kitty/kitty.conf" \
+    -o remember_window_size=no \
+    -o "initial_window_width=${GEOMETRY%x*}" \
+    -o "initial_window_height=${GEOMETRY#*x}" \
+    -o confirm_os_window_close=0 \
+    --directory "$WORK/rackvm" \
+    -- bash --noprofile --norc >/dev/null 2>&1 &
+sleep 3
+
+for _ in $(seq 30); do
+    xdotool search --onlyvisible --class kitty >/dev/null 2>&1 && break
+    sleep 1
+done
+xdotool search --onlyvisible --class kitty windowactivate >/dev/null 2>&1 || true
+xdotool type --delay 10 -- 'export PS1="rackvm $ " PATH='"$WORK"'/bin:$PATH; clear; tmux -L meowcrec -f '"$WORK"'/tmux.conf new-session -s d'
+xdotool key Return
+sleep 2
+xdotool type --delay 10 -- 'export PS1="rackvm $ " PATH='"$WORK"'/bin:$PATH; clear'
+xdotool key Return
+sleep 1
+
+start_capture "$GEOMETRY" "$WORK/watch.mkv"
+
+send_line 'meowc watch' 3
+xdotool key ctrl+b; sleep 0.4; xdotool key percent; sleep 1.2
+xdotool type --delay 10 -- 'export PS1="rackvm $ " PATH='"$WORK"'/bin:$PATH; clear'
+xdotool key Return
+sleep 1
+
+send_line 'echo "void rackvm_probe(void);" >> include/rackvm.h' 6
+send_line 'sed -i /rackvm_probe/d include/rackvm.h' 6
+send_line 'touch src/*.c include/*.h' 4
+
+stop_capture
+
+LIMIT=${LIMIT:-45}
+raw=$(ffprobe -v error -show_entries format=duration -of csv=p=0 "$WORK/watch.mkv")
+speed=$(python3 -c "print(max(1.0, $raw / $LIMIT))")
+ffmpeg -v error -y -i "$WORK/watch.mkv" -an -vf "setpts=PTS/$speed" \
+    -c:v libx264 -crf 20 -preset slow -pix_fmt yuv420p -movflags +faststart "$OUT"
+echo "raw ${raw}s, sped up ${speed}x"
+rm -rf "$WORK"
+echo "wrote $OUT"