feat(vegas): let live content keep its place in the ticker

Live content used to preempt Vegas outright: while any plugin reported
live priority the display controller refused to run the ticker at all and
showed a full-screen scoreboard instead. Keeping the marquee meant not
seeing live scores; seeing live scores meant losing the marquee.

Two changes, both off by default.

vegas_scroll.live_in_ticker keeps the ticker running through a live game.
Three places assumed the takeover and all three now honour it: the
controller's gate, the coordinator's per-frame pause, and the rotation
switch that would otherwise move current_mode_index underneath a ticker
that never yields.

And the rotation is no longer a strict round robin. It was one slot per
plugin per cycle, so with a dozen plugins enabled a live score came round
once a lap and could be minutes old on screen. A plugin can now hold
several slots, placed by Smooth Weighted Round-Robin -- the same
scheduler the sports plugins already use to rotate their own games. The
property that matters is that repeats are spread through the cycle
rather than clumped: three in a row and then silence would be worse than
no boost at all.

Weight comes from the plugin first, via a new optional
get_vegas_priority_weight(), then from the core: live content earns
live_weight, everything else 1. So existing plugins gain the behaviour
without changes, and the hook exists for the one thing the core cannot
work out -- the core can see that a game is live but not whose, so only
the plugin can say a favorite is playing.

Documented in ADVANCED_FEATURES (worked example, why weights are per
plugin not per game, and that frequency is not freshness),
CONFIG_REFERENCE, PLUGIN_API_REFERENCE, and the config template.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Udr6MfaFLUPhX5Fgo67Jf5
This commit is contained in:
ChuckBuilds
2026-08-12 16:29:01 -04:00
co-authored by Claude Opus 5
parent bb1a1671ec
commit 8c00df2e13
10 changed files with 466 additions and 4 deletions
+3
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@@ -129,6 +129,9 @@
"plugin_rotation_order": [],
"use_short_date_format": true,
"vegas_scroll": {
"live_in_ticker": false,
"live_weight": 3,
"favorite_live_weight": 5,
"enabled": false,
"scroll_speed": 50,
"separator_width": 32,
+83 -1
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@@ -64,10 +64,92 @@ JSON is optional.
| `target_fps` | `125` | Target frame rate |
| `buffer_ahead` | `2` | Number of plugins buffered ahead |
This table is a subset — `display.vegas_scroll` supports 26 keys in
This table is a subset — `display.vegas_scroll` supports 29 keys in
total. See the full list in
[CONFIG_REFERENCE.md](CONFIG_REFERENCE.md#displayvegas_scroll--continuous-scroll-mode).
### Live Content in the Ticker
By default, live content **preempts** Vegas mode: while any plugin reports
live priority, the display controller refuses to run the ticker and shows
that plugin's full-screen display instead. You get a big readable scoreboard,
but the marquee stops entirely for the duration of the game.
Set `live_in_ticker` to keep the ticker running and let live content take
**extra turns inside it** instead:
```json
"vegas_scroll": {
"live_in_ticker": true,
"live_weight": 3,
"favorite_live_weight": 5
}
```
#### Why weights exist
The rotation is otherwise a strict round robin — every plugin appears exactly
once per cycle. With a dozen plugins enabled, a live score comes round once a
lap and can be minutes old by the time you see it. A weight of *N* gives a
plugin *N* slots per cycle.
The slots are placed by **Smooth Weighted Round-Robin**, the same scheduler
the sports plugins use internally to rotate their own games. The important
property is that repeats are *spread through the cycle* rather than clumped:
three appearances in a row followed by a long silence would be worse than not
boosting at all.
Twelve plugins, with a favorite's baseball game and an ordinary live hockey
game (`live_weight: 3`, `favorite_live_weight: 5`):
```
baseball > hockey > weather > clock > baseball
stocks > news > flights > baseball > hockey
calendar > f1 > music > baseball > tides
birds > hockey > baseball
```
18 slots for 12 plugins. Baseball appears 5 times, hockey 3, everything else
once, and no plugin ever appears twice in a row.
#### Where the weight comes from
For each plugin in the rotation, in order:
1. **The plugin's own answer.** If it implements
`get_vegas_priority_weight()` and returns a number, that wins. This is the
only route for favorite-team awareness — the core can see *that* a game is
live, but not *whose*, so a scoreboard has to say so itself.
2. **The core's default.** When the plugin returns `None` (the base-class
default), a plugin where both `has_live_priority()` and `has_live_content()`
are true gets `live_weight`.
3. **Everything else** gets 1.
Because of step 2, **existing plugins need no changes** — any scoreboard with
`live_priority` enabled already gets extra turns. Step 1 is opt-in, for
plugins that want to distinguish a favorite's game from any other live game.
Weights are clamped to 110. A weight of 1 is no boost; a weight below 1 would
drop the plugin from the rotation entirely, which is never what is meant.
#### Things worth knowing
- **Weights are per plugin, not per game.** A scoreboard showing four live
games still occupies one slot at a time, rotating its own games within that
slot using its own `favorite_live_boost`. This controls how often the
*plugin* comes round.
- **The ticker is zero-sum.** Giving baseball 5 slots does not make the cycle
faster; it makes the cycle *longer* and everything else proportionally
rarer. If you want live scores sooner in wall-clock terms, pair this with a
smaller `plugins_per_cycle`.
- **Frequency is not freshness.** Each appearance redraws from the plugin's
current data (`refresh_updated_plugins()` drops cached content when a
plugin's data changes), but how current that data is depends on the
plugin's own `live_update_interval`. Showing a stale score five times a lap
is no better than showing it once.
- **Everything still appears.** A boost never starves another plugin out of
the cycle; low-weight plugins keep their single slot.
### Per-Plugin Configuration
Override Vegas behavior for specific plugins:
+5 -1
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@@ -103,7 +103,8 @@ logical image to multiple chained physical panels.
## `display.vegas_scroll` — continuous scroll mode
Read by `src/vegas_mode/config.py` (`VegasScrollConfig.from_config`). See
[ADVANCED_FEATURES.md](ADVANCED_FEATURES.md) for behavior details.
[ADVANCED_FEATURES.md](ADVANCED_FEATURES.md) for behavior details, including
[live content in the ticker](ADVANCED_FEATURES.md#live-content-in-the-ticker).
| Key | Type / default |
|---|---|
@@ -134,6 +135,9 @@ Read by `src/vegas_mode/config.py` (`VegasScrollConfig.from_config`). See
| `max_cycle_duration` | int, `240` |
| `frame_based_scrolling` | bool, `true` — frame-count-based scroll stepping |
| `scroll_delay` | float, `0.02` — seconds between scroll updates (~50 FPS) |
| `live_in_ticker` | bool, `false` — keep scrolling during live games instead of handing the display to a full-screen scoreboard |
| `live_weight` | int, `3` (110) — slots per cycle for a plugin with live content |
| `favorite_live_weight` | int, `5` (110) — slots per cycle when a plugin reports a favorite team is live |
## `sync` — multi-display synchronization
+39
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@@ -170,6 +170,45 @@ Default returns `False`.
List of display modes to show during a live takeover. Default returns the
plugin's `display_modes` from its manifest.
#### `get_vegas_priority_weight() -> Optional[int]`
How many slots per Vegas cycle this plugin should get. Default returns
`None`, which defers to the core.
The Vegas ticker is otherwise a strict round robin — every plugin appears
exactly once per cycle — so with a dozen plugins enabled a live score can be
minutes stale by the time it comes round. A weight of *N* gives the plugin
*N* slots per cycle, spread evenly through it rather than clumped.
**You usually do not need this.** When the hook returns `None`, the core
already gives a plugin `vegas_scroll.live_weight` whenever
`has_live_priority()` and `has_live_content()` are both true. Live sports get
extra turns with no code at all.
Implement it only when the plugin knows something the core cannot. The
motivating case is favorite teams — the core can see *that* a game is live,
but not *whose*:
```python
def get_vegas_priority_weight(self):
if not (self.has_live_priority() and self.has_live_content()):
return None # let the core decide
vegas = self.global_config.get('display', {}).get('vegas_scroll', {})
if self._favorite_is_live():
return vegas.get('favorite_live_weight', 5)
return vegas.get('live_weight', 3)
```
The weight is per *plugin*, not per game: a scoreboard showing four live games
still occupies one slot at a time and rotates its own games within it. Values
are clamped to 110 by the caller, and an exception here is caught and
treated as weight 1 rather than breaking the rotation.
Only consulted when the user has set `vegas_scroll.live_in_ticker`. With the
default (`false`) live content preempts Vegas entirely and there is no ticker
to be weighted within. See
[ADVANCED_FEATURES.md](ADVANCED_FEATURES.md#live-content-in-the-ticker).
### Vegas scroll hooks
Vegas mode shows multiple plugins as a single continuous scroll instead of
+18 -2
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@@ -1638,6 +1638,12 @@ class DisplayController:
logger.warning("Error checking live priority for %s: %s", mode_name, e)
return live
def _vegas_keeps_live_in_ticker(self) -> bool:
"""Whether live content should stay in the ticker instead of preempting it."""
coordinator = getattr(self, 'vegas_coordinator', None)
config = getattr(coordinator, 'vegas_config', None)
return bool(getattr(config, 'live_in_ticker', False))
def _check_live_priority(self, advance=False):
"""Return the live-priority mode to display, or None if nothing is live.
@@ -1851,14 +1857,24 @@ class DisplayController:
# Check for live priority content and switch to it immediately.
# advance=True so multiple simultaneously-live games take turns
# (round-robin) instead of pinning to the first plugin.
if not self.on_demand_active and not wifi_status_data:
# Skipped when the ticker is keeping live content: switching
# the rotation underneath Vegas would move current_mode_index
# and stash a resume point for a takeover that never happens.
if (not self.on_demand_active and not wifi_status_data
and not (self._is_vegas_mode_active()
and self._vegas_keeps_live_in_ticker())):
live_priority_mode = self._check_live_priority(advance=True)
self._apply_live_priority(live_priority_mode)
# Vegas scroll mode - continuous ticker across all plugins
# Priority: on-demand > wifi-status > live-priority > vegas > normal rotation
if self._is_vegas_mode_active() and not wifi_status_data:
live_mode = self._check_live_priority()
# Live content normally preempts the ticker entirely. With
# vegas_scroll.live_in_ticker the marquee keeps running and
# the live plugin takes extra turns inside it instead --
# see StreamManager._apply_priority_weights.
live_mode = (None if self._vegas_keeps_live_in_ticker()
else self._check_live_priority())
if not live_mode:
try:
# Run Vegas mode iteration
+38
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@@ -555,6 +555,44 @@ class BasePlugin(ABC):
"""
return False
def get_vegas_priority_weight(self) -> Optional[int]:
"""How many slots per Vegas cycle this plugin should get, or None.
The Vegas ticker is otherwise a strict round robin: every plugin
appears exactly once per cycle. With a dozen plugins enabled that puts
minutes between a live score and its next appearance. A weight of N
gives the plugin N slots per cycle, spread evenly through it rather
than clumped together.
Return ``None`` (the default) to let the core decide. It gives a
plugin ``vegas_scroll.live_weight`` when ``has_live_priority()`` and
``has_live_content()`` are both true, and 1 otherwise -- so live sports
already get extra turns without implementing this at all.
Implement it only when the plugin knows something the core cannot. The
motivating case is favorite teams: the core can see *that* a game is
live but not *whose*, so a scoreboard that wants its favorite's game
shown more often than other live games has to say so::
def get_vegas_priority_weight(self):
if not (self.has_live_priority() and self.has_live_content()):
return None # let the core decide
cfg = self.global_config.get('display', {}).get('vegas_scroll', {})
if self._favorite_is_live():
return cfg.get('favorite_live_weight', 5)
return cfg.get('live_weight', 3)
The weight is per *plugin*, not per game. A scoreboard showing four
live games still occupies one slot at a time and rotates its own games
within that slot; this controls how often the plugin itself comes
round.
Returns:
Slots per cycle (clamped to 1..10 by the caller), or None to
defer to the core's own live-content weighting.
"""
return None
def get_live_modes(self) -> List[str]:
"""
Get list of display modes that should be used during live priority takeover.
+32
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@@ -125,6 +125,32 @@ class VegasModeConfig:
plugin_order: List[str] = field(default_factory=list)
excluded_plugins: Set[str] = field(default_factory=set)
# --- Live content in the ticker -------------------------------------
#
# By default a live game preempts Vegas entirely: the display controller
# refuses to run the ticker while any plugin reports live priority, and you
# get the full-screen scoreboard instead. Set live_in_ticker to keep the
# marquee running and let live content take extra turns within it.
#
# The rotation is otherwise a strict round robin -- every plugin appears
# exactly once per cycle -- so with a dozen plugins enabled a live score
# comes round once a lap and can be minutes old on screen. Weighting lets a
# plugin claim several slots per cycle instead.
#
# Weights are per plugin, not per game: a scoreboard showing four live
# games still occupies one slot at a time, and rotates its own games within
# that slot using its own favorite_live_boost.
live_in_ticker: bool = False
# Slots per cycle for a plugin reporting live content. 1 disables the boost
# and restores the plain round robin.
live_weight: int = 3
# Slots per cycle for a plugin whose live content involves a favorite team.
# Only plugins implementing get_vegas_priority_weight() can claim this --
# the core cannot tell whose game is on, so the plugin reports it.
favorite_live_weight: int = 5
# Performance settings
target_fps: int = 125 # Target frame rate
buffer_ahead: int = 2 # Number of plugins to buffer ahead
@@ -175,6 +201,12 @@ class VegasModeConfig:
overflow_mode=str(vegas_config.get('overflow_mode', 'rotate')),
plugin_order=list(vegas_config.get('plugin_order', [])),
excluded_plugins=set(vegas_config.get('excluded_plugins', [])),
live_in_ticker=bool(vegas_config.get('live_in_ticker', False)),
# Clamped: a weight below 1 would drop the plugin from the rotation
# entirely, and a very large one starves everything else.
live_weight=max(1, min(10, int(vegas_config.get('live_weight', 3)))),
favorite_live_weight=max(
1, min(10, int(vegas_config.get('favorite_live_weight', 5)))),
target_fps=int(vegas_config.get('target_fps', 125)),
buffer_ahead=int(vegas_config.get('buffer_ahead', 2)),
frame_based_scrolling=vegas_config.get('frame_based_scrolling', True),
+6
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@@ -497,6 +497,12 @@ class VegasModeCoordinator:
if not self._live_priority_check:
return False
if self.vegas_config.live_in_ticker:
# The ticker keeps live content rather than yielding to it; the
# extra turns are arranged in the rotation itself, so there is
# nothing to pause for.
return False
try:
live_mode = self._live_priority_check()
if live_mode:
+71
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@@ -406,6 +406,8 @@ class StreamManager:
)
logger.info("Ordered plugins: %s", ordered_plugins)
ordered_plugins = self._apply_priority_weights(ordered_plugins)
# Atomically update shared state under lock to avoid races with prefetchers
with self._buffer_lock:
self._ordered_plugins = ordered_plugins
@@ -417,6 +419,75 @@ class StreamManager:
logger.info("=" * 60)
def _plugin_weight(self, plugin_id: str) -> int:
"""Slots per cycle for one plugin.
A plugin may answer for itself via get_vegas_priority_weight() -- the
only way favorite-team awareness can reach here, since the core can see
that a game is live but not whose. When it declines (returns None, the
default), live content earns ``live_weight`` and everything else 1.
"""
plugin = None
try:
plugin = self.plugin_manager.plugins.get(plugin_id)
except (AttributeError, TypeError):
return 1
if plugin is None:
return 1
try:
if hasattr(plugin, 'get_vegas_priority_weight'):
declared = plugin.get_vegas_priority_weight()
if declared is not None:
return max(1, min(10, int(declared)))
except Exception:
logger.exception("[%s] get_vegas_priority_weight() failed", plugin_id)
try:
if (hasattr(plugin, 'has_live_priority')
and hasattr(plugin, 'has_live_content')
and plugin.has_live_priority()
and plugin.has_live_content()):
return self.config.live_weight
except Exception:
logger.exception("[%s] live-content check failed", plugin_id)
return 1
def _apply_priority_weights(self, ordered: List[str]) -> List[str]:
"""Expand the rotation so weighted plugins take several turns per cycle.
Smooth Weighted Round-Robin, the same scheduler the sports plugins use
to rotate their own games: a plugin of weight N appears N times per
cycle, and the repeats are spaced through the cycle rather than
clumped, so a live score is never three-in-a-row followed by a long
silence.
Returns the input unchanged when nothing is weighted, which is both the
common case and the pre-existing behaviour.
"""
if not ordered or not self.config.live_in_ticker:
return ordered
weights = {pid: self._plugin_weight(pid) for pid in ordered}
total = sum(weights.values())
if total <= len(ordered):
return ordered # nothing boosted; plain round robin
current = {pid: 0 for pid in ordered}
schedule: List[str] = []
for _ in range(total):
for pid in ordered:
current[pid] += weights[pid]
picked = max(current, key=lambda p: current[p])
current[picked] -= total
schedule.append(picked)
boosted = {p: w for p, w in weights.items() if w > 1}
logger.info(
"Vegas rotation weighted: %d slots for %d plugins (boosted: %s)",
len(schedule), len(ordered), boosted)
return schedule
def _prefetch_content(self, count: int = 1) -> None:
"""
Prefetch content for upcoming plugins.
+171
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@@ -0,0 +1,171 @@
"""Tests that live content can take extra turns inside the Vegas ticker.
Vegas was a strict round robin -- every plugin exactly once per cycle -- and
live content did not appear in it at all, because the display controller
refused to run the ticker while anything was live. With a dozen plugins
enabled that left a live score either absent or minutes stale.
Two things change, both off by default. `live_in_ticker` keeps the marquee
running instead of yielding to a full-screen takeover, and the rotation is
expanded by Smooth Weighted Round-Robin so a weighted plugin gets several
slots per cycle, spaced through it rather than clumped.
Weights are per plugin, not per game: a scoreboard showing four live games
still occupies one slot at a time and rotates its own games within it.
"""
from unittest.mock import Mock
import pytest
from src.vegas_mode.config import VegasModeConfig
from src.vegas_mode.stream_manager import StreamManager
class FakePlugin:
def __init__(self, live=False, declared=None, raises=False):
self._live = live
self._declared = declared
self._raises = raises
self.enabled = True
def has_live_priority(self):
if self._raises:
raise RuntimeError("plugin blew up")
return self._live
def has_live_content(self):
return self._live
def get_vegas_priority_weight(self):
if self._raises:
raise RuntimeError("plugin blew up")
return self._declared
def _manager(plugins, **cfg):
config = VegasModeConfig(live_in_ticker=cfg.pop('live_in_ticker', True), **cfg)
pm = Mock()
pm.plugins = plugins
sm = StreamManager.__new__(StreamManager)
sm.config = config
sm.plugin_manager = pm
return sm
def _counts(schedule):
return {p: schedule.count(p) for p in set(schedule)}
def _max_gap(schedule, plugin_id):
"""Largest gap between consecutive appearances, wrapping around."""
at = [i for i, p in enumerate(schedule) if p == plugin_id]
if len(at) < 2:
return len(schedule)
gaps = [b - a for a, b in zip(at, at[1:])]
gaps.append(len(schedule) - at[-1] + at[0])
return max(gaps)
class TestWeightsComeFromTheRightPlace:
def test_a_quiet_plugin_gets_one_slot(self):
sm = _manager({'clock': FakePlugin()})
assert sm._plugin_weight('clock') == 1
def test_live_content_earns_the_configured_weight(self):
sm = _manager({'mlb': FakePlugin(live=True)}, live_weight=4)
assert sm._plugin_weight('mlb') == 4
def test_a_plugin_may_answer_for_itself(self):
# The only route for favorite-team awareness: the core can see that a
# game is live, not whose.
sm = _manager({'mlb': FakePlugin(live=True, declared=7)}, live_weight=3)
assert sm._plugin_weight('mlb') == 7
def test_declaring_none_defers_to_the_core(self):
sm = _manager({'mlb': FakePlugin(live=True, declared=None)}, live_weight=3)
assert sm._plugin_weight('mlb') == 3
def test_a_declared_weight_is_clamped(self):
sm = _manager({'a': FakePlugin(declared=99), 'b': FakePlugin(declared=0)})
assert sm._plugin_weight('a') == 10
assert sm._plugin_weight('b') == 1
def test_a_plugin_that_raises_does_not_break_the_rotation(self):
sm = _manager({'bad': FakePlugin(raises=True)})
assert sm._plugin_weight('bad') == 1
def test_an_unknown_plugin_weighs_one(self):
assert _manager({})._plugin_weight('ghost') == 1
class TestTheSchedule:
def test_nothing_weighted_leaves_the_order_untouched(self):
order = ['weather', 'clock', 'news']
sm = _manager({p: FakePlugin() for p in order})
assert sm._apply_priority_weights(order) == order
def test_off_by_default_the_order_is_untouched(self):
order = ['weather', 'mlb', 'news']
sm = _manager({'weather': FakePlugin(), 'mlb': FakePlugin(live=True),
'news': FakePlugin()}, live_in_ticker=False, live_weight=3)
assert sm._apply_priority_weights(order) == order
def test_a_live_plugin_takes_its_share_of_slots(self):
order = ['weather', 'mlb', 'news', 'clock']
sm = _manager({'weather': FakePlugin(), 'mlb': FakePlugin(live=True),
'news': FakePlugin(), 'clock': FakePlugin()},
live_weight=3)
schedule = sm._apply_priority_weights(order)
counts = _counts(schedule)
assert counts['mlb'] == 3, counts
assert counts['weather'] == counts['news'] == counts['clock'] == 1, counts
assert len(schedule) == 6
def test_every_plugin_still_appears(self):
# A boost must not starve anything out of the cycle.
order = ['a', 'b', 'c', 'd', 'e', 'f']
plugins = {p: FakePlugin() for p in order}
plugins['a'] = FakePlugin(live=True, declared=10)
sm = _manager(plugins)
schedule = sm._apply_priority_weights(order)
assert set(schedule) == set(order), set(order) - set(schedule)
def test_repeats_are_spread_not_clumped(self):
# The point of Smooth Weighted Round-Robin. Three-in-a-row followed by
# a long silence would be worse than not boosting at all.
order = ['weather', 'mlb', 'news', 'clock', 'stocks', 'f1']
plugins = {p: FakePlugin() for p in order}
plugins['mlb'] = FakePlugin(live=True)
sm = _manager(plugins, live_weight=3)
schedule = sm._apply_priority_weights(order)
assert _counts(schedule)['mlb'] == 3
# Evenly spread over 8 slots means a gap of about 3, never 6.
assert _max_gap(schedule, 'mlb') <= 4, schedule
# And never twice running.
assert not any(a == b == 'mlb' for a, b in zip(schedule, schedule[1:])), schedule
def test_a_favorite_outranks_another_live_game(self):
order = ['weather', 'mlb', 'nhl']
sm = _manager({'weather': FakePlugin(),
'mlb': FakePlugin(live=True, declared=5),
'nhl': FakePlugin(live=True)}, live_weight=2)
counts = _counts(sm._apply_priority_weights(order))
assert counts['mlb'] == 5 and counts['nhl'] == 2 and counts['weather'] == 1, counts
def test_an_empty_rotation_is_harmless(self):
assert _manager({})._apply_priority_weights([]) == []
class TestConfigParsing:
def test_defaults_preserve_todays_behaviour(self):
cfg = VegasModeConfig.from_config({})
assert cfg.live_in_ticker is False
assert cfg.live_weight == 3 and cfg.favorite_live_weight == 5
@pytest.mark.parametrize("given,expected", [(0, 1), (-4, 1), (99, 10), (4, 4)])
def test_weights_are_clamped(self, given, expected):
cfg = VegasModeConfig.from_config(
{'display': {'vegas_scroll': {'live_weight': given}}})
assert cfg.live_weight == expected