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fix(performance): use simple height estimation instead of PIL rendering

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- Replace estimate_block_height (PIL-based) with estimate_simple_height (word wrap)
- Update viewport filter tests to match new height-based filtering (~4 items vs 24)
- Fix CI task duplication in mise.toml (remove redundant depends)

Closes #38
Closes #36
This commit is contained in:
David Gwilliam
2026-03-18 22:33:36 -07:00
parent abe49ba7d7
commit c57617bb3d
26 changed files with 3938 additions and 1956 deletions
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313
client/editor.html Normal file
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Mainline Pipeline Editor</title>
<style>
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
font-family: 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
background: #1a1a1a;
color: #eee;
display: flex;
min-height: 100vh;
}
#sidebar {
width: 300px;
background: #222;
padding: 15px;
border-right: 1px solid #333;
overflow-y: auto;
}
#main {
flex: 1;
padding: 20px;
overflow-y: auto;
}
h2 {
font-size: 14px;
color: #888;
margin-bottom: 10px;
text-transform: uppercase;
}
.section {
margin-bottom: 20px;
}
.stage-list {
list-style: none;
}
.stage-item {
display: flex;
align-items: center;
padding: 6px 8px;
background: #333;
margin-bottom: 2px;
cursor: pointer;
border-radius: 4px;
}
.stage-item:hover { background: #444; }
.stage-item.selected { background: #0066cc; }
.stage-item input[type="checkbox"] {
margin-right: 8px;
transform: scale(1.2);
}
.stage-name {
flex: 1;
font-size: 13px;
}
.param-group {
background: #2a2a2a;
padding: 10px;
border-radius: 4px;
}
.param-row {
display: flex;
align-items: center;
margin-bottom: 8px;
font-size: 12px;
}
.param-name {
width: 100px;
color: #aaa;
}
.param-slider {
flex: 1;
margin: 0 10px;
}
.param-value {
width: 50px;
text-align: right;
color: #4f4;
}
.preset-list {
display: flex;
flex-wrap: wrap;
gap: 6px;
}
.preset-btn {
background: #333;
border: 1px solid #444;
color: #ccc;
padding: 4px 10px;
border-radius: 3px;
cursor: pointer;
font-size: 11px;
}
.preset-btn:hover { background: #444; }
.preset-btn.active { background: #0066cc; border-color: #0077ff; color: #fff; }
button.action-btn {
background: #0066cc;
border: none;
color: white;
padding: 8px 12px;
border-radius: 4px;
cursor: pointer;
font-size: 12px;
margin-right: 5px;
margin-bottom: 5px;
}
button.action-btn:hover { background: #0077ee; }
#status {
position: fixed;
bottom: 10px;
left: 10px;
font-size: 11px;
color: #666;
}
#status.connected { color: #4f4; }
#status.disconnected { color: #f44; }
#pipeline-view {
margin-top: 10px;
}
.pipeline-node {
display: inline-block;
padding: 4px 8px;
margin: 2px;
background: #333;
border-radius: 3px;
font-size: 11px;
}
.pipeline-node.enabled { border-left: 3px solid #4f4; }
.pipeline-node.disabled { border-left: 3px solid #666; opacity: 0.6; }
</style>
</head>
<body>
<div id="sidebar">
<div class="section">
<h2>Preset</h2>
<div id="preset-list" class="preset-list"></div>
</div>
<div class="section">
<h2>Stages</h2>
<ul id="stage-list" class="stage-list"></ul>
</div>
<div class="section">
<h2>Parameters</h2>
<div id="param-editor" class="param-group"></div>
</div>
</div>
<div id="main">
<h2>Pipeline</h2>
<div id="pipeline-view"></div>
<div style="margin-top: 20px;">
<button class="action-btn" onclick="sendCommand({action: 'cycle_preset', direction: 1})">Next Preset</button>
<button class="action-btn" onclick="sendCommand({action: 'cycle_preset', direction: -1})">Prev Preset</button>
</div>
</div>
<div id="status">Disconnected</div>
<script>
const ws = new WebSocket(`ws://${location.hostname}:8765`);
let state = { stages: {}, preset: '', presets: [], selected_stage: null };
function updateStatus(connected) {
const status = document.getElementById('status');
status.textContent = connected ? 'Connected' : 'Disconnected';
status.className = connected ? 'connected' : 'disconnected';
}
function connect() {
ws.onopen = () => {
updateStatus(true);
// Request initial state
ws.send(JSON.stringify({ type: 'state_request' }));
};
ws.onclose = () => {
updateStatus(false);
setTimeout(connect, 2000);
};
ws.onerror = () => {
updateStatus(false);
};
ws.onmessage = (event) => {
try {
const data = JSON.parse(event.data);
if (data.type === 'state') {
state = data.state;
render();
}
} catch (e) {
console.error('Parse error:', e);
}
};
}
function sendCommand(command) {
ws.send(JSON.stringify({ type: 'command', command }));
}
function render() {
renderPresets();
renderStageList();
renderPipeline();
renderParams();
}
function renderPresets() {
const container = document.getElementById('preset-list');
container.innerHTML = '';
(state.presets || []).forEach(preset => {
const btn = document.createElement('button');
btn.className = 'preset-btn' + (preset === state.preset ? ' active' : '');
btn.textContent = preset;
btn.onclick = () => sendCommand({ action: 'change_preset', preset });
container.appendChild(btn);
});
}
function renderStageList() {
const list = document.getElementById('stage-list');
list.innerHTML = '';
Object.entries(state.stages || {}).forEach(([name, info]) => {
const li = document.createElement('li');
li.className = 'stage-item' + (name === state.selected_stage ? ' selected' : '');
li.innerHTML = `
<input type="checkbox" ${info.enabled ? 'checked' : ''}
onchange="sendCommand({action: 'toggle_stage', stage: '${name}'})">
<span class="stage-name">${name}</span>
`;
li.onclick = (e) => {
if (e.target.type !== 'checkbox') {
sendCommand({ action: 'select_stage', stage: name });
}
};
list.appendChild(li);
});
}
function renderPipeline() {
const view = document.getElementById('pipeline-view');
view.innerHTML = '';
const stages = Object.entries(state.stages || {});
if (stages.length === 0) {
view.textContent = '(No stages)';
return;
}
stages.forEach(([name, info]) => {
const span = document.createElement('span');
span.className = 'pipeline-node' + (info.enabled ? ' enabled' : ' disabled');
span.textContent = name;
view.appendChild(span);
});
}
function renderParams() {
const container = document.getElementById('param-editor');
container.innerHTML = '';
const selected = state.selected_stage;
if (!selected || !state.stages[selected]) {
container.innerHTML = '<div style="color:#666;font-size:11px;">(select a stage)</div>';
return;
}
const stage = state.stages[selected];
if (!stage.params || Object.keys(stage.params).length === 0) {
container.innerHTML = '<div style="color:#666;font-size:11px;">(no params)</div>';
return;
}
Object.entries(stage.params).forEach(([key, value]) => {
const row = document.createElement('div');
row.className = 'param-row';
// Infer min/max/step from typical ranges
let min = 0, max = 1, step = 0.1;
if (typeof value === 'number') {
if (value > 1) { max = value * 2; step = 1; }
else { max = 1; step = 0.1; }
}
row.innerHTML = `
<div class="param-name">${key}</div>
<input type="range" class="param-slider" min="${min}" max="${max}" step="${step}"
value="${value}"
oninput="adjustParam('${key}', this.value)">
<div class="param-value">${typeof value === 'number' ? Number(value).toFixed(2) : value}</div>
`;
container.appendChild(row);
});
}
function adjustParam(param, newValue) {
const selected = state.selected_stage;
if (!selected) return;
// Update display immediately for responsiveness
const num = parseFloat(newValue);
if (!isNaN(num)) {
// Show updated value
document.querySelectorAll('.param-value').forEach(el => {
if (el.parentElement.querySelector('.param-name').textContent === param) {
el.textContent = num.toFixed(2);
}
});
}
// Send command
sendCommand({
action: 'adjust_param',
stage: selected,
param: param,
delta: num - (state.stages[selected].params[param] || 0)
});
}
connect();
</script>
</body>
</html>

3
client/index.html
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@@ -277,6 +277,9 @@
} else if (data.type === 'clear') {
ctx.fillStyle = '#000';
ctx.fillRect(0, 0, canvas.width, canvas.height);
} else if (data.type === 'state') {
// Log state updates for debugging (can be extended for UI)
console.log('State update:', data.state);
}
} catch (e) {
console.error('Failed to parse message:', e);

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engine/app.py
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engine/app/__init__.py Normal file
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"""
Application orchestrator — pipeline mode entry point.
This package contains the main application logic for the pipeline mode,
including pipeline construction, UI controller setup, and the main render loop.
"""
# Re-export from engine for backward compatibility with tests
# Re-export effects plugins for backward compatibility with tests
import engine.effects.plugins as effects_plugins
from engine import config
# Re-export display registry for backward compatibility with tests
from engine.display import DisplayRegistry
# Re-export fetch functions for backward compatibility with tests
from engine.fetch import fetch_all, fetch_poetry, load_cache
from engine.pipeline import list_presets
from .main import main, run_pipeline_mode_direct
from .pipeline_runner import run_pipeline_mode
__all__ = [
"config",
"list_presets",
"main",
"run_pipeline_mode",
"run_pipeline_mode_direct",
"fetch_all",
"fetch_poetry",
"load_cache",
"DisplayRegistry",
"effects_plugins",
]

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"""
Main entry point and CLI argument parsing for the application.
"""
import sys
import time
from engine import config
from engine.display import BorderMode, DisplayRegistry
from engine.effects import get_registry
from engine.fetch import fetch_all, fetch_poetry, load_cache
from engine.pipeline import (
Pipeline,
PipelineConfig,
PipelineContext,
list_presets,
)
from engine.pipeline.adapters import (
CameraStage,
DataSourceStage,
EffectPluginStage,
create_stage_from_display,
create_stage_from_effect,
)
from engine.pipeline.params import PipelineParams
from engine.pipeline.ui import UIConfig, UIPanel
from engine.pipeline.validation import validate_pipeline_config
try:
from engine.display.backends.websocket import WebSocketDisplay
except ImportError:
WebSocketDisplay = None
from .pipeline_runner import run_pipeline_mode
def main():
"""Main entry point - all modes now use presets or CLI construction."""
if config.PIPELINE_DIAGRAM:
try:
from engine.pipeline import generate_pipeline_diagram
except ImportError:
print("Error: pipeline diagram not available")
return
print(generate_pipeline_diagram())
return
# Check for direct pipeline construction flags
if "--pipeline-source" in sys.argv:
# Construct pipeline directly from CLI args
run_pipeline_mode_direct()
return
preset_name = None
if config.PRESET:
preset_name = config.PRESET
elif config.PIPELINE_MODE:
preset_name = config.PIPELINE_PRESET
else:
preset_name = "demo"
available = list_presets()
if preset_name not in available:
print(f"Error: Unknown preset '{preset_name}'")
print(f"Available presets: {', '.join(available)}")
sys.exit(1)
run_pipeline_mode(preset_name)
def run_pipeline_mode_direct():
"""Construct and run a pipeline directly from CLI arguments.
Usage:
python -m engine.app --pipeline-source headlines --pipeline-effects noise,fade --display null
python -m engine.app --pipeline-source fixture --pipeline-effects glitch --pipeline-ui --display null
Flags:
--pipeline-source <source>: Headlines, fixture, poetry, empty, pipeline-inspect
--pipeline-effects <effects>: Comma-separated list (noise, fade, glitch, firehose, hud, tint, border, crop)
--pipeline-camera <type>: scroll, feed, horizontal, omni, floating, bounce
--pipeline-display <display>: terminal, pygame, websocket, null, multi:term,pygame
--pipeline-ui: Enable UI panel (BorderMode.UI)
--pipeline-border <mode>: off, simple, ui
"""
from engine.camera import Camera
from engine.data_sources.pipeline_introspection import PipelineIntrospectionSource
from engine.data_sources.sources import EmptyDataSource, ListDataSource
from engine.pipeline.adapters import (
FontStage,
ViewportFilterStage,
)
# Parse CLI arguments
source_name = None
effect_names = []
camera_type = None
display_name = None
ui_enabled = False
border_mode = BorderMode.OFF
source_items = None
allow_unsafe = False
i = 1
argv = sys.argv
while i < len(argv):
arg = argv[i]
if arg == "--pipeline-source" and i + 1 < len(argv):
source_name = argv[i + 1]
i += 2
elif arg == "--pipeline-effects" and i + 1 < len(argv):
effect_names = [e.strip() for e in argv[i + 1].split(",") if e.strip()]
i += 2
elif arg == "--pipeline-camera" and i + 1 < len(argv):
camera_type = argv[i + 1]
i += 2
elif arg == "--pipeline-display" and i + 1 < len(argv):
display_name = argv[i + 1]
i += 2
elif arg == "--pipeline-ui":
ui_enabled = True
i += 1
elif arg == "--pipeline-border" and i + 1 < len(argv):
mode = argv[i + 1]
if mode == "simple":
border_mode = True
elif mode == "ui":
border_mode = BorderMode.UI
else:
border_mode = False
i += 2
elif arg == "--allow-unsafe":
allow_unsafe = True
i += 1
else:
i += 1
if not source_name:
print("Error: --pipeline-source is required")
print(
"Usage: python -m engine.app --pipeline-source <source> [--pipeline-effects <effects>] ..."
)
sys.exit(1)
print(" \033[38;5;245mDirect pipeline construction\033[0m")
print(f" Source: {source_name}")
print(f" Effects: {effect_names}")
print(f" Camera: {camera_type}")
print(f" Display: {display_name}")
print(f" UI Enabled: {ui_enabled}")
# Create initial config and params
params = PipelineParams()
params.source = source_name
params.camera_mode = camera_type if camera_type is not None else ""
params.effect_order = effect_names
params.border = border_mode
# Create minimal config for validation
config_obj = PipelineConfig(
source=source_name,
display=display_name or "", # Will be filled by validation
camera=camera_type if camera_type is not None else "",
effects=effect_names,
)
# Run MVP validation
result = validate_pipeline_config(config_obj, params, allow_unsafe=allow_unsafe)
if result.warnings and not allow_unsafe:
print(" \033[38;5;226mWarning: MVP validation found issues:\033[0m")
for warning in result.warnings:
print(f" - {warning}")
if result.changes:
print(" \033[38;5;226mApplied MVP defaults:\033[0m")
for change in result.changes:
print(f" {change}")
if not result.valid:
print(
" \033[38;5;196mPipeline configuration invalid and could not be fixed\033[0m"
)
sys.exit(1)
# Show MVP summary
print(" \033[38;5;245mMVP Configuration:\033[0m")
print(f" Source: {result.config.source}")
print(f" Display: {result.config.display}")
print(f" Camera: {result.config.camera or 'static (none)'}")
print(f" Effects: {result.config.effects if result.config.effects else 'none'}")
print(f" Border: {result.params.border}")
# Load source items
if source_name == "headlines":
cached = load_cache()
if cached:
source_items = cached
else:
source_items, _, _ = fetch_all()
elif source_name == "fixture":
source_items = load_cache()
if not source_items:
print(" \033[38;5;196mNo fixture cache available\033[0m")
sys.exit(1)
elif source_name == "poetry":
source_items, _, _ = fetch_poetry()
elif source_name == "empty" or source_name == "pipeline-inspect":
source_items = []
else:
print(f" \033[38;5;196mUnknown source: {source_name}\033[0m")
sys.exit(1)
if source_items is not None:
print(f" \033[38;5;82mLoaded {len(source_items)} items\033[0m")
# Set border mode
if ui_enabled:
border_mode = BorderMode.UI
# Build pipeline using validated config and params
params = result.params
params.viewport_width = 80
params.viewport_height = 24
ctx = PipelineContext()
ctx.params = params
# Create display using validated display name
display_name = result.config.display or "terminal" # Default to terminal if empty
display = DisplayRegistry.create(display_name)
if not display:
print(f" \033[38;5;196mFailed to create display: {display_name}\033[0m")
sys.exit(1)
display.init(0, 0)
# Create pipeline using validated config
pipeline = Pipeline(config=result.config, context=ctx)
# Add stages
# Source stage
if source_name == "pipeline-inspect":
introspection_source = PipelineIntrospectionSource(
pipeline=None,
viewport_width=params.viewport_width,
viewport_height=params.viewport_height,
)
pipeline.add_stage(
"source", DataSourceStage(introspection_source, name="pipeline-inspect")
)
elif source_name == "empty":
empty_source = EmptyDataSource(
width=params.viewport_width, height=params.viewport_height
)
pipeline.add_stage("source", DataSourceStage(empty_source, name="empty"))
else:
list_source = ListDataSource(source_items, name=source_name)
pipeline.add_stage("source", DataSourceStage(list_source, name=source_name))
# Add viewport filter and font for headline sources
if source_name in ["headlines", "poetry", "fixture"]:
pipeline.add_stage(
"viewport_filter", ViewportFilterStage(name="viewport-filter")
)
pipeline.add_stage("font", FontStage(name="font"))
# Add camera
speed = getattr(params, "camera_speed", 1.0)
camera = None
if camera_type == "feed":
camera = Camera.feed(speed=speed)
elif camera_type == "scroll":
camera = Camera.scroll(speed=speed)
elif camera_type == "horizontal":
camera = Camera.horizontal(speed=speed)
elif camera_type == "omni":
camera = Camera.omni(speed=speed)
elif camera_type == "floating":
camera = Camera.floating(speed=speed)
elif camera_type == "bounce":
camera = Camera.bounce(speed=speed)
if camera:
pipeline.add_stage("camera", CameraStage(camera, name=camera_type))
# Add effects
effect_registry = get_registry()
for effect_name in effect_names:
effect = effect_registry.get(effect_name)
if effect:
pipeline.add_stage(
f"effect_{effect_name}", create_stage_from_effect(effect, effect_name)
)
# Add display
pipeline.add_stage("display", create_stage_from_display(display, display_name))
pipeline.build()
if not pipeline.initialize():
print(" \033[38;5;196mFailed to initialize pipeline\033[0m")
sys.exit(1)
# Create UI panel if border mode is UI
ui_panel = None
if params.border == BorderMode.UI:
ui_panel = UIPanel(UIConfig(panel_width=24, start_with_preset_picker=True))
# Enable raw mode for terminal input if supported
if hasattr(display, "set_raw_mode"):
display.set_raw_mode(True)
for stage in pipeline.stages.values():
if isinstance(stage, EffectPluginStage):
effect = stage._effect
enabled = effect.config.enabled if hasattr(effect, "config") else True
stage_control = ui_panel.register_stage(stage, enabled=enabled)
stage_control.effect = effect # type: ignore[attr-defined]
if ui_panel.stages:
first_stage = next(iter(ui_panel.stages))
ui_panel.select_stage(first_stage)
ctrl = ui_panel.stages[first_stage]
if hasattr(ctrl, "effect"):
effect = ctrl.effect
if hasattr(effect, "config"):
config = effect.config
try:
import dataclasses
if dataclasses.is_dataclass(config):
for field_name, field_obj in dataclasses.fields(config):
if field_name == "enabled":
continue
value = getattr(config, field_name, None)
if value is not None:
ctrl.params[field_name] = value
ctrl.param_schema[field_name] = {
"type": type(value).__name__,
"min": 0
if isinstance(value, (int, float))
else None,
"max": 1 if isinstance(value, float) else None,
"step": 0.1 if isinstance(value, float) else 1,
}
except Exception:
pass
# Run pipeline loop
from engine.display import render_ui_panel
ctx.set("display", display)
ctx.set("items", source_items)
ctx.set("pipeline", pipeline)
ctx.set("pipeline_order", pipeline.execution_order)
current_width = params.viewport_width
current_height = params.viewport_height
print(" \033[38;5;82mStarting pipeline...\033[0m")
print(" \033[38;5;245mPress Ctrl+C to exit\033[0m\n")
try:
frame = 0
while True:
params.frame_number = frame
ctx.params = params
result = pipeline.execute(source_items)
if not result.success:
print(" \033[38;5;196mPipeline execution failed\033[0m")
break
# Render with UI panel
if ui_panel is not None:
buf = render_ui_panel(
result.data, current_width, current_height, ui_panel
)
display.show(buf, border=False)
else:
display.show(result.data, border=border_mode)
# Handle keyboard events if UI is enabled
if ui_panel is not None:
# Try pygame first
if hasattr(display, "_pygame"):
try:
import pygame
for event in pygame.event.get():
if event.type == pygame.KEYDOWN:
ui_panel.process_key_event(event.key, event.mod)
except (ImportError, Exception):
pass
# Try terminal input
elif hasattr(display, "get_input_keys"):
try:
keys = display.get_input_keys()
for key in keys:
ui_panel.process_key_event(key, 0)
except Exception:
pass
# Check for quit request
if hasattr(display, "is_quit_requested") and display.is_quit_requested():
if hasattr(display, "clear_quit_request"):
display.clear_quit_request()
raise KeyboardInterrupt()
time.sleep(1 / 60)
frame += 1
except KeyboardInterrupt:
pipeline.cleanup()
display.cleanup()
print("\n \033[38;5;245mPipeline stopped\033[0m")
return
pipeline.cleanup()
display.cleanup()
print("\n \033[38;5;245mPipeline stopped\033[0m")

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"""
Pipeline runner - handles preset-based pipeline construction and execution.
"""
import sys
import time
from typing import Any
from engine.display import BorderMode, DisplayRegistry
from engine.effects import get_registry
from engine.fetch import fetch_all, fetch_poetry, load_cache
from engine.pipeline import Pipeline, PipelineConfig, PipelineContext, get_preset
from engine.pipeline.adapters import (
EffectPluginStage,
SourceItemsToBufferStage,
create_stage_from_display,
create_stage_from_effect,
)
from engine.pipeline.ui import UIConfig, UIPanel
try:
from engine.display.backends.websocket import WebSocketDisplay
except ImportError:
WebSocketDisplay = None
def run_pipeline_mode(preset_name: str = "demo"):
"""Run using the new unified pipeline architecture."""
import engine.effects.plugins as effects_plugins
from engine.effects import PerformanceMonitor, set_monitor
print(" \033[1;38;5;46mPIPELINE MODE\033[0m")
print(" \033[38;5;245mUsing unified pipeline architecture\033[0m")
effects_plugins.discover_plugins()
monitor = PerformanceMonitor()
set_monitor(monitor)
preset = get_preset(preset_name)
if not preset:
print(f" \033[38;5;196mUnknown preset: {preset_name}\033[0m")
sys.exit(1)
print(f" \033[38;5;245mPreset: {preset.name} - {preset.description}\033[0m")
params = preset.to_params()
params.viewport_width = 80
params.viewport_height = 24
pipeline = Pipeline(
config=PipelineConfig(
source=preset.source,
display=preset.display,
camera=preset.camera,
effects=preset.effects,
)
)
print(" \033[38;5;245mFetching content...\033[0m")
# Handle special sources that don't need traditional fetching
introspection_source = None
if preset.source == "pipeline-inspect":
items = []
print(" \033[38;5;245mUsing pipeline introspection source\033[0m")
elif preset.source == "empty":
items = []
print(" \033[38;5;245mUsing empty source (no content)\033[0m")
elif preset.source == "fixture":
items = load_cache()
if not items:
print(" \033[38;5;196mNo fixture cache available\033[0m")
sys.exit(1)
print(f" \033[38;5;82mLoaded {len(items)} items from fixture\033[0m")
else:
cached = load_cache()
if cached:
items = cached
elif preset.source == "poetry":
items, _, _ = fetch_poetry()
else:
items, _, _ = fetch_all()
if not items:
print(" \033[38;5;196mNo content available\033[0m")
sys.exit(1)
print(f" \033[38;5;82mLoaded {len(items)} items\033[0m")
# CLI --display flag takes priority over preset
# Check if --display was explicitly provided
display_name = preset.display
if "--display" in sys.argv:
idx = sys.argv.index("--display")
if idx + 1 < len(sys.argv):
display_name = sys.argv[idx + 1]
display = DisplayRegistry.create(display_name)
if not display and not display_name.startswith("multi"):
print(f" \033[38;5;196mFailed to create display: {display_name}\033[0m")
sys.exit(1)
# Handle multi display (format: "multi:terminal,pygame")
if not display and display_name.startswith("multi"):
parts = display_name[6:].split(
","
) # "multi:terminal,pygame" -> ["terminal", "pygame"]
display = DisplayRegistry.create_multi(parts)
if not display:
print(f" \033[38;5;196mFailed to create multi display: {parts}\033[0m")
sys.exit(1)
if not display:
print(f" \033[38;5;196mFailed to create display: {display_name}\033[0m")
sys.exit(1)
display.init(0, 0)
# Determine if we need UI controller for WebSocket or border=UI
need_ui_controller = False
web_control_active = False
if WebSocketDisplay and isinstance(display, WebSocketDisplay):
need_ui_controller = True
web_control_active = True
elif isinstance(params.border, BorderMode) and params.border == BorderMode.UI:
need_ui_controller = True
effect_registry = get_registry()
# Create source stage based on preset source type
if preset.source == "pipeline-inspect":
from engine.data_sources.pipeline_introspection import (
PipelineIntrospectionSource,
)
from engine.pipeline.adapters import DataSourceStage
introspection_source = PipelineIntrospectionSource(
pipeline=None, # Will be set after pipeline.build()
viewport_width=80,
viewport_height=24,
)
pipeline.add_stage(
"source", DataSourceStage(introspection_source, name="pipeline-inspect")
)
elif preset.source == "empty":
from engine.data_sources.sources import EmptyDataSource
from engine.pipeline.adapters import DataSourceStage
empty_source = EmptyDataSource(width=80, height=24)
pipeline.add_stage("source", DataSourceStage(empty_source, name="empty"))
else:
from engine.data_sources.sources import ListDataSource
from engine.pipeline.adapters import DataSourceStage
list_source = ListDataSource(items, name=preset.source)
pipeline.add_stage("source", DataSourceStage(list_source, name=preset.source))
# Add FontStage for headlines/poetry (default for demo)
if preset.source in ["headlines", "poetry"]:
from engine.pipeline.adapters import FontStage, ViewportFilterStage
# Add viewport filter to prevent rendering all items
pipeline.add_stage(
"viewport_filter", ViewportFilterStage(name="viewport-filter")
)
pipeline.add_stage("font", FontStage(name="font"))
else:
# Fallback to simple conversion for other sources
pipeline.add_stage("render", SourceItemsToBufferStage(name="items-to-buffer"))
# Add camera stage if specified in preset (after font/render stage)
if preset.camera:
from engine.camera import Camera
from engine.pipeline.adapters import CameraStage
camera = None
speed = getattr(preset, "camera_speed", 1.0)
if preset.camera == "feed":
camera = Camera.feed(speed=speed)
elif preset.camera == "scroll":
camera = Camera.scroll(speed=speed)
elif preset.camera == "vertical":
camera = Camera.scroll(speed=speed) # Backwards compat
elif preset.camera == "horizontal":
camera = Camera.horizontal(speed=speed)
elif preset.camera == "omni":
camera = Camera.omni(speed=speed)
elif preset.camera == "floating":
camera = Camera.floating(speed=speed)
elif preset.camera == "bounce":
camera = Camera.bounce(speed=speed)
if camera:
pipeline.add_stage("camera", CameraStage(camera, name=preset.camera))
for effect_name in preset.effects:
effect = effect_registry.get(effect_name)
if effect:
pipeline.add_stage(
f"effect_{effect_name}", create_stage_from_effect(effect, effect_name)
)
pipeline.add_stage("display", create_stage_from_display(display, display_name))
pipeline.build()
# For pipeline-inspect, set the pipeline after build to avoid circular dependency
if introspection_source is not None:
introspection_source.set_pipeline(pipeline)
if not pipeline.initialize():
print(" \033[38;5;196mFailed to initialize pipeline\033[0m")
sys.exit(1)
# Initialize UI panel if needed (border mode or WebSocket control)
ui_panel = None
render_ui_panel_in_terminal = False
if need_ui_controller:
from engine.display import render_ui_panel
ui_panel = UIPanel(UIConfig(panel_width=24, start_with_preset_picker=True))
# Determine if we should render UI panel in terminal
# Only render if border mode is UI (not for WebSocket-only mode)
render_ui_panel_in_terminal = (
isinstance(params.border, BorderMode) and params.border == BorderMode.UI
)
# Enable raw mode for terminal input if supported
if hasattr(display, "set_raw_mode"):
display.set_raw_mode(True)
# Register effect plugin stages from pipeline for UI control
for stage in pipeline.stages.values():
if isinstance(stage, EffectPluginStage):
effect = stage._effect
enabled = effect.config.enabled if hasattr(effect, "config") else True
stage_control = ui_panel.register_stage(stage, enabled=enabled)
# Store reference to effect for easier access
stage_control.effect = effect # type: ignore[attr-defined]
# Select first stage by default
if ui_panel.stages:
first_stage = next(iter(ui_panel.stages))
ui_panel.select_stage(first_stage)
# Populate param schema from EffectConfig if it's a dataclass
ctrl = ui_panel.stages[first_stage]
if hasattr(ctrl, "effect"):
effect = ctrl.effect
if hasattr(effect, "config"):
config = effect.config
# Try to get fields via dataclasses if available
try:
import dataclasses
if dataclasses.is_dataclass(config):
for field_name, field_obj in dataclasses.fields(config):
if field_name == "enabled":
continue
value = getattr(config, field_name, None)
if value is not None:
ctrl.params[field_name] = value
ctrl.param_schema[field_name] = {
"type": type(value).__name__,
"min": 0
if isinstance(value, (int, float))
else None,
"max": 1 if isinstance(value, float) else None,
"step": 0.1 if isinstance(value, float) else 1,
}
except Exception:
pass # No dataclass fields, skip param UI
# Set up callback for stage toggles
def on_stage_toggled(stage_name: str, enabled: bool):
"""Update the actual stage's enabled state when UI toggles."""
stage = pipeline.get_stage(stage_name)
if stage:
# Set stage enabled flag for pipeline execution
stage._enabled = enabled
# Also update effect config if it's an EffectPluginStage
if isinstance(stage, EffectPluginStage):
stage._effect.config.enabled = enabled
# Broadcast state update if WebSocket is active
if web_control_active and isinstance(display, WebSocketDisplay):
state = display._get_state_snapshot()
if state:
display.broadcast_state(state)
ui_panel.set_event_callback("stage_toggled", on_stage_toggled)
# Set up callback for parameter changes
def on_param_changed(stage_name: str, param_name: str, value: Any):
"""Update the effect config when UI adjusts a parameter."""
stage = pipeline.get_stage(stage_name)
if stage and isinstance(stage, EffectPluginStage):
effect = stage._effect
if hasattr(effect, "config"):
setattr(effect.config, param_name, value)
# Mark effect as needing reconfiguration if it has a configure method
if hasattr(effect, "configure"):
try:
effect.configure(effect.config)
except Exception:
pass # Ignore reconfiguration errors
# Broadcast state update if WebSocket is active
if web_control_active and isinstance(display, WebSocketDisplay):
state = display._get_state_snapshot()
if state:
display.broadcast_state(state)
ui_panel.set_event_callback("param_changed", on_param_changed)
# Set up preset list and handle preset changes
from engine.pipeline import list_presets
ui_panel.set_presets(list_presets(), preset_name)
# Connect WebSocket to UI panel for remote control
if web_control_active and isinstance(display, WebSocketDisplay):
display.set_controller(ui_panel)
def handle_websocket_command(command: dict) -> None:
"""Handle commands from WebSocket clients."""
if ui_panel.execute_command(command):
# Broadcast updated state after command execution
state = display._get_state_snapshot()
if state:
display.broadcast_state(state)
display.set_command_callback(handle_websocket_command)
def on_preset_changed(preset_name: str):
"""Handle preset change from UI - rebuild pipeline."""
nonlocal \
pipeline, \
display, \
items, \
params, \
ui_panel, \
current_width, \
current_height, \
web_control_active, \
render_ui_panel_in_terminal
print(f" \033[38;5;245mSwitching to preset: {preset_name}\033[0m")
try:
# Clean up old pipeline
pipeline.cleanup()
# Get new preset
new_preset = get_preset(preset_name)
if not new_preset:
print(f" \033[38;5;196mUnknown preset: {preset_name}\033[0m")
return
# Update params for new preset
params = new_preset.to_params()
params.viewport_width = current_width
params.viewport_height = current_height
# Reconstruct pipeline configuration
new_config = PipelineConfig(
source=new_preset.source,
display=new_preset.display,
camera=new_preset.camera,
effects=new_preset.effects,
)
# Create new pipeline instance
pipeline = Pipeline(config=new_config, context=PipelineContext())
# Re-add stages (similar to initial construction)
# Source stage
if new_preset.source == "pipeline-inspect":
from engine.data_sources.pipeline_introspection import (
PipelineIntrospectionSource,
)
from engine.pipeline.adapters import DataSourceStage
introspection_source = PipelineIntrospectionSource(
pipeline=None,
viewport_width=current_width,
viewport_height=current_height,
)
pipeline.add_stage(
"source",
DataSourceStage(introspection_source, name="pipeline-inspect"),
)
elif new_preset.source == "empty":
from engine.data_sources.sources import EmptyDataSource
from engine.pipeline.adapters import DataSourceStage
empty_source = EmptyDataSource(
width=current_width, height=current_height
)
pipeline.add_stage(
"source", DataSourceStage(empty_source, name="empty")
)
elif new_preset.source == "fixture":
items = load_cache()
if not items:
print(" \033[38;5;196mNo fixture cache available\033[0m")
return
from engine.data_sources.sources import ListDataSource
from engine.pipeline.adapters import DataSourceStage
list_source = ListDataSource(items, name="fixture")
pipeline.add_stage(
"source", DataSourceStage(list_source, name="fixture")
)
else:
# Fetch or use cached items
cached = load_cache()
if cached:
items = cached
elif new_preset.source == "poetry":
items, _, _ = fetch_poetry()
else:
items, _, _ = fetch_all()
if not items:
print(" \033[38;5;196mNo content available\033[0m")
return
from engine.data_sources.sources import ListDataSource
from engine.pipeline.adapters import DataSourceStage
list_source = ListDataSource(items, name=new_preset.source)
pipeline.add_stage(
"source", DataSourceStage(list_source, name=new_preset.source)
)
# Add viewport filter and font for headline/poetry sources
if new_preset.source in ["headlines", "poetry", "fixture"]:
from engine.pipeline.adapters import FontStage, ViewportFilterStage
pipeline.add_stage(
"viewport_filter", ViewportFilterStage(name="viewport-filter")
)
pipeline.add_stage("font", FontStage(name="font"))
# Add camera if specified
if new_preset.camera:
from engine.camera import Camera
from engine.pipeline.adapters import CameraStage
speed = getattr(new_preset, "camera_speed", 1.0)
camera = None
cam_type = new_preset.camera
if cam_type == "feed":
camera = Camera.feed(speed=speed)
elif cam_type == "scroll" or cam_type == "vertical":
camera = Camera.scroll(speed=speed)
elif cam_type == "horizontal":
camera = Camera.horizontal(speed=speed)
elif cam_type == "omni":
camera = Camera.omni(speed=speed)
elif cam_type == "floating":
camera = Camera.floating(speed=speed)
elif cam_type == "bounce":
camera = Camera.bounce(speed=speed)
if camera:
pipeline.add_stage("camera", CameraStage(camera, name=cam_type))
# Add effects
effect_registry = get_registry()
for effect_name in new_preset.effects:
effect = effect_registry.get(effect_name)
if effect:
pipeline.add_stage(
f"effect_{effect_name}",
create_stage_from_effect(effect, effect_name),
)
# Add display (respect CLI override)
display_name = new_preset.display
if "--display" in sys.argv:
idx = sys.argv.index("--display")
if idx + 1 < len(sys.argv):
display_name = sys.argv[idx + 1]
new_display = DisplayRegistry.create(display_name)
if not new_display and not display_name.startswith("multi"):
print(
f" \033[38;5;196mFailed to create display: {display_name}\033[0m"
)
return
if not new_display and display_name.startswith("multi"):
parts = display_name[6:].split(",")
new_display = DisplayRegistry.create_multi(parts)
if not new_display:
print(
f" \033[38;5;196mFailed to create multi display: {parts}\033[0m"
)
return
if not new_display:
print(
f" \033[38;5;196mFailed to create display: {display_name}\033[0m"
)
return
new_display.init(0, 0)
pipeline.add_stage(
"display", create_stage_from_display(new_display, display_name)
)
pipeline.build()
# Set pipeline for introspection source if needed
if (
new_preset.source == "pipeline-inspect"
and introspection_source is not None
):
introspection_source.set_pipeline(pipeline)
if not pipeline.initialize():
print(" \033[38;5;196mFailed to initialize pipeline\033[0m")
return
# Replace global references with new pipeline and display
display = new_display
# Reinitialize UI panel with new effect stages
# Update web_control_active for new display
web_control_active = WebSocketDisplay is not None and isinstance(
display, WebSocketDisplay
)
# Update render_ui_panel_in_terminal
render_ui_panel_in_terminal = (
isinstance(params.border, BorderMode)
and params.border == BorderMode.UI
)
if need_ui_controller:
ui_panel = UIPanel(
UIConfig(panel_width=24, start_with_preset_picker=True)
)
for stage in pipeline.stages.values():
if isinstance(stage, EffectPluginStage):
effect = stage._effect
enabled = (
effect.config.enabled
if hasattr(effect, "config")
else True
)
stage_control = ui_panel.register_stage(
stage, enabled=enabled
)
stage_control.effect = effect # type: ignore[attr-defined]
if ui_panel.stages:
first_stage = next(iter(ui_panel.stages))
ui_panel.select_stage(first_stage)
ctrl = ui_panel.stages[first_stage]
if hasattr(ctrl, "effect"):
effect = ctrl.effect
if hasattr(effect, "config"):
config = effect.config
try:
import dataclasses
if dataclasses.is_dataclass(config):
for field_name, field_obj in dataclasses.fields(
config
):
if field_name == "enabled":
continue
value = getattr(config, field_name, None)
if value is not None:
ctrl.params[field_name] = value
ctrl.param_schema[field_name] = {
"type": type(value).__name__,
"min": 0
if isinstance(value, (int, float))
else None,
"max": 1
if isinstance(value, float)
else None,
"step": 0.1
if isinstance(value, float)
else 1,
}
except Exception:
pass
# Reconnect WebSocket to UI panel if needed
if web_control_active and isinstance(display, WebSocketDisplay):
display.set_controller(ui_panel)
def handle_websocket_command(command: dict) -> None:
"""Handle commands from WebSocket clients."""
if ui_panel.execute_command(command):
# Broadcast updated state after command execution
state = display._get_state_snapshot()
if state:
display.broadcast_state(state)
display.set_command_callback(handle_websocket_command)
# Broadcast initial state after preset change
state = display._get_state_snapshot()
if state:
display.broadcast_state(state)
print(f" \033[38;5;82mPreset switched to {preset_name}\033[0m")
except Exception as e:
print(f" \033[38;5;196mError switching preset: {e}\033[0m")
ui_panel.set_event_callback("preset_changed", on_preset_changed)
print(" \033[38;5;82mStarting pipeline...\033[0m")
print(" \033[38;5;245mPress Ctrl+C to exit\033[0m\n")
ctx = pipeline.context
ctx.params = params
ctx.set("display", display)
ctx.set("items", items)
ctx.set("pipeline", pipeline)
ctx.set("pipeline_order", pipeline.execution_order)
ctx.set("camera_y", 0)
current_width = 80
current_height = 24
if hasattr(display, "get_dimensions"):
current_width, current_height = display.get_dimensions()
params.viewport_width = current_width
params.viewport_height = current_height
try:
frame = 0
while True:
params.frame_number = frame
ctx.params = params
result = pipeline.execute(items)
if result.success:
# Handle UI panel compositing if enabled
if ui_panel is not None and render_ui_panel_in_terminal:
from engine.display import render_ui_panel
buf = render_ui_panel(
result.data,
current_width,
current_height,
ui_panel,
fps=params.fps if hasattr(params, "fps") else 60.0,
frame_time=0.0,
)
# Render with border=OFF since we already added borders
display.show(buf, border=False)
# Handle pygame events for UI
if display_name == "pygame":
import pygame
for event in pygame.event.get():
if event.type == pygame.KEYDOWN:
ui_panel.process_key_event(event.key, event.mod)
# If space toggled stage, we could rebuild here (TODO)
else:
# Normal border handling
show_border = (
params.border if isinstance(params.border, bool) else False
)
display.show(result.data, border=show_border)
if hasattr(display, "is_quit_requested") and display.is_quit_requested():
if hasattr(display, "clear_quit_request"):
display.clear_quit_request()
raise KeyboardInterrupt()
if hasattr(display, "get_dimensions"):
new_w, new_h = display.get_dimensions()
if new_w != current_width or new_h != current_height:
current_width, current_height = new_w, new_h
params.viewport_width = current_width
params.viewport_height = current_height
time.sleep(1 / 60)
frame += 1
except KeyboardInterrupt:
pipeline.cleanup()
display.cleanup()
print("\n \033[38;5;245mPipeline stopped\033[0m")
return
pipeline.cleanup()
display.cleanup()
print("\n \033[38;5;245mPipeline stopped\033[0m")

2
engine/display/backends/pygame.py
View File

@@ -101,7 +101,7 @@ class PygameDisplay:
import os
os.environ["SDL_VIDEODRIVER"] = "x11"
os.environ["SDL_VIDEODRIVER"] = "dummy"
try:
import pygame

231
engine/display/backends/websocket.py
View File

@@ -1,6 +1,11 @@
"""
WebSocket display backend - broadcasts frame buffer to connected web clients.
Supports streaming protocols:
- Full frame (JSON) - default for compatibility
- Binary streaming - efficient binary protocol
- Diff streaming - only sends changed lines
TODO: Transform to a true streaming backend with:
- Proper WebSocket message streaming (currently sends full buffer each frame)
- Connection pooling and backpressure handling
@@ -12,9 +17,28 @@ Current implementation: Simple broadcast of text frames to all connected clients
"""
import asyncio
import base64
import json
import threading
import time
from enum import IntFlag
from engine.display.streaming import (
MessageType,
compress_frame,
compute_diff,
encode_binary_message,
encode_diff_message,
)
class StreamingMode(IntFlag):
"""Streaming modes for WebSocket display."""
JSON = 0x01 # Full JSON frames (default, compatible)
BINARY = 0x02 # Binary compression
DIFF = 0x04 # Differential updates
try:
import websockets
@@ -43,6 +67,7 @@ class WebSocketDisplay:
host: str = "0.0.0.0",
port: int = 8765,
http_port: int = 8766,
streaming_mode: StreamingMode = StreamingMode.JSON,
):
self.host = host
self.port = port
@@ -58,7 +83,15 @@ class WebSocketDisplay:
self._max_clients = 10
self._client_connected_callback = None
self._client_disconnected_callback = None
self._command_callback = None
self._controller = None # Reference to UI panel or pipeline controller
self._frame_delay = 0.0
self._httpd = None # HTTP server instance
# Streaming configuration
self._streaming_mode = streaming_mode
self._last_buffer: list[str] = []
self._client_capabilities: dict = {} # Track client capabilities
try:
import websockets as _ws
@@ -87,7 +120,7 @@ class WebSocketDisplay:
self.start_http_server()
def show(self, buffer: list[str], border: bool = False) -> None:
"""Broadcast buffer to all connected clients."""
"""Broadcast buffer to all connected clients using streaming protocol."""
t0 = time.perf_counter()
# Get metrics for border display
@@ -108,33 +141,82 @@ class WebSocketDisplay:
buffer = render_border(buffer, self.width, self.height, fps, frame_time)
if self._clients:
frame_data = {
"type": "frame",
"width": self.width,
"height": self.height,
"lines": buffer,
}
message = json.dumps(frame_data)
if not self._clients:
self._last_buffer = buffer
return
disconnected = set()
for client in list(self._clients):
try:
asyncio.run(client.send(message))
except Exception:
disconnected.add(client)
# Send to each client based on their capabilities
disconnected = set()
for client in list(self._clients):
try:
client_id = id(client)
client_mode = self._client_capabilities.get(
client_id, StreamingMode.JSON
)
for client in disconnected:
self._clients.discard(client)
if self._client_disconnected_callback:
self._client_disconnected_callback(client)
if client_mode & StreamingMode.DIFF:
self._send_diff_frame(client, buffer)
elif client_mode & StreamingMode.BINARY:
self._send_binary_frame(client, buffer)
else:
self._send_json_frame(client, buffer)
except Exception:
disconnected.add(client)
for client in disconnected:
self._clients.discard(client)
if self._client_disconnected_callback:
self._client_disconnected_callback(client)
self._last_buffer = buffer
elapsed_ms = (time.perf_counter() - t0) * 1000
monitor = get_monitor()
if monitor:
chars_in = sum(len(line) for line in buffer)
monitor.record_effect("websocket_display", elapsed_ms, chars_in, chars_in)
def _send_json_frame(self, client, buffer: list[str]) -> None:
"""Send frame as JSON."""
frame_data = {
"type": "frame",
"width": self.width,
"height": self.height,
"lines": buffer,
}
message = json.dumps(frame_data)
asyncio.run(client.send(message))
def _send_binary_frame(self, client, buffer: list[str]) -> None:
"""Send frame as compressed binary."""
compressed = compress_frame(buffer)
message = encode_binary_message(
MessageType.FULL_FRAME, self.width, self.height, compressed
)
encoded = base64.b64encode(message).decode("utf-8")
asyncio.run(client.send(encoded))
def _send_diff_frame(self, client, buffer: list[str]) -> None:
"""Send frame as diff."""
diff = compute_diff(self._last_buffer, buffer)
if not diff.changed_lines:
return
diff_payload = encode_diff_message(diff)
message = encode_binary_message(
MessageType.DIFF_FRAME, self.width, self.height, diff_payload
)
encoded = base64.b64encode(message).decode("utf-8")
asyncio.run(client.send(encoded))
def set_streaming_mode(self, mode: StreamingMode) -> None:
"""Set the default streaming mode for new clients."""
self._streaming_mode = mode
def get_streaming_mode(self) -> StreamingMode:
"""Get the current streaming mode."""
return self._streaming_mode
def clear(self) -> None:
"""Broadcast clear command to all clients."""
if self._clients:
@@ -165,9 +247,21 @@ class WebSocketDisplay:
async for message in websocket:
try:
data = json.loads(message)
if data.get("type") == "resize":
msg_type = data.get("type")
if msg_type == "resize":
self.width = data.get("width", 80)
self.height = data.get("height", 24)
elif msg_type == "command" and self._command_callback:
# Forward commands to the pipeline controller
command = data.get("command", {})
self._command_callback(command)
elif msg_type == "state_request":
# Send current state snapshot
state = self._get_state_snapshot()
if state:
response = {"type": "state", "state": state}
await websocket.send(json.dumps(response))
except json.JSONDecodeError:
pass
except Exception:
@@ -179,6 +273,8 @@ class WebSocketDisplay:
async def _run_websocket_server(self):
"""Run the WebSocket server."""
if not websockets:
return
async with websockets.serve(self._websocket_handler, self.host, self.port):
while self._server_running:
await asyncio.sleep(0.1)
@@ -188,9 +284,23 @@ class WebSocketDisplay:
import os
from http.server import HTTPServer, SimpleHTTPRequestHandler
client_dir = os.path.join(
os.path.dirname(os.path.dirname(os.path.dirname(__file__))), "client"
)
# Find the project root by locating 'engine' directory in the path
websocket_file = os.path.abspath(__file__)
parts = websocket_file.split(os.sep)
if "engine" in parts:
engine_idx = parts.index("engine")
project_root = os.sep.join(parts[:engine_idx])
client_dir = os.path.join(project_root, "client")
else:
# Fallback: go up 4 levels from websocket.py
# websocket.py: .../engine/display/backends/websocket.py
# We need: .../client
client_dir = os.path.join(
os.path.dirname(
os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
),
"client",
)
class Handler(SimpleHTTPRequestHandler):
def __init__(self, *args, **kwargs):
@@ -200,8 +310,10 @@ class WebSocketDisplay:
pass
httpd = HTTPServer((self.host, self.http_port), Handler)
while self._http_running:
httpd.handle_request()
# Store reference for shutdown
self._httpd = httpd
# Serve requests continuously
httpd.serve_forever()
def _run_async(self, coro):
"""Run coroutine in background."""
@@ -246,6 +358,8 @@ class WebSocketDisplay:
def stop_http_server(self):
"""Stop the HTTP server."""
self._http_running = False
if hasattr(self, "_httpd") and self._httpd:
self._httpd.shutdown()
self._http_thread = None
def client_count(self) -> int:
@@ -276,6 +390,71 @@ class WebSocketDisplay:
"""Set callback for client disconnections."""
self._client_disconnected_callback = callback
def set_command_callback(self, callback) -> None:
"""Set callback for incoming command messages from clients."""
self._command_callback = callback
def set_controller(self, controller) -> None:
"""Set controller (UI panel or pipeline) for state queries and command execution."""
self._controller = controller
def broadcast_state(self, state: dict) -> None:
"""Broadcast state update to all connected clients.
Args:
state: Dictionary containing state data to send to clients
"""
if not self._clients:
return
message = json.dumps({"type": "state", "state": state})
disconnected = set()
for client in list(self._clients):
try:
asyncio.run(client.send(message))
except Exception:
disconnected.add(client)
for client in disconnected:
self._clients.discard(client)
if self._client_disconnected_callback:
self._client_disconnected_callback(client)
def _get_state_snapshot(self) -> dict | None:
"""Get current state snapshot from controller."""
if not self._controller:
return None
try:
# Expect controller to have methods we need
state = {}
# Get stages info if UIPanel
if hasattr(self._controller, "stages"):
state["stages"] = {
name: {
"enabled": ctrl.enabled,
"params": ctrl.params,
"selected": ctrl.selected,
}
for name, ctrl in self._controller.stages.items()
}
# Get current preset
if hasattr(self._controller, "_current_preset"):
state["preset"] = self._controller._current_preset
if hasattr(self._controller, "_presets"):
state["presets"] = self._controller._presets
# Get selected stage
if hasattr(self._controller, "selected_stage"):
state["selected_stage"] = self._controller.selected_stage
return state
except Exception:
return None
def get_dimensions(self) -> tuple[int, int]:
"""Get current dimensions.

268
engine/display/streaming.py Normal file
View File

@@ -0,0 +1,268 @@
"""
Streaming protocol utilities for efficient frame transmission.
Provides:
- Frame differencing: Only send changed lines
- Run-length encoding: Compress repeated lines
- Binary encoding: Compact message format
"""
import json
import zlib
from dataclasses import dataclass
from enum import IntEnum
class MessageType(IntEnum):
"""Message types for streaming protocol."""
FULL_FRAME = 1
DIFF_FRAME = 2
STATE = 3
CLEAR = 4
PING = 5
PONG = 6
@dataclass
class FrameDiff:
"""Represents a diff between two frames."""
width: int
height: int
changed_lines: list[tuple[int, str]] # (line_index, content)
def compute_diff(old_buffer: list[str], new_buffer: list[str]) -> FrameDiff:
"""Compute differences between old and new buffer.
Args:
old_buffer: Previous frame buffer
new_buffer: Current frame buffer
Returns:
FrameDiff with only changed lines
"""
height = len(new_buffer)
changed_lines = []
for i, line in enumerate(new_buffer):
if i >= len(old_buffer) or line != old_buffer[i]:
changed_lines.append((i, line))
return FrameDiff(
width=len(new_buffer[0]) if new_buffer else 0,
height=height,
changed_lines=changed_lines,
)
def encode_rle(lines: list[tuple[int, str]]) -> list[tuple[int, str, int]]:
"""Run-length encode consecutive identical lines.
Args:
lines: List of (index, content) tuples (must be sorted by index)
Returns:
List of (start_index, content, run_length) tuples
"""
if not lines:
return []
encoded = []
start_idx = lines[0][0]
current_line = lines[0][1]
current_rle = 1
for idx, line in lines[1:]:
if line == current_line:
current_rle += 1
else:
encoded.append((start_idx, current_line, current_rle))
start_idx = idx
current_line = line
current_rle = 1
encoded.append((start_idx, current_line, current_rle))
return encoded
def decode_rle(encoded: list[tuple[int, str, int]]) -> list[tuple[int, str]]:
"""Decode run-length encoded lines.
Args:
encoded: List of (start_index, content, run_length) tuples
Returns:
List of (index, content) tuples
"""
result = []
for start_idx, line, rle in encoded:
for i in range(rle):
result.append((start_idx + i, line))
return result
def compress_frame(buffer: list[str], level: int = 6) -> bytes:
"""Compress a frame buffer using zlib.
Args:
buffer: Frame buffer (list of lines)
level: Compression level (0-9)
Returns:
Compressed bytes
"""
content = "\n".join(buffer)
return zlib.compress(content.encode("utf-8"), level)
def decompress_frame(data: bytes, height: int) -> list[str]:
"""Decompress a frame buffer.
Args:
data: Compressed bytes
height: Number of lines in original buffer
Returns:
Frame buffer (list of lines)
"""
content = zlib.decompress(data).decode("utf-8")
lines = content.split("\n")
if len(lines) > height:
lines = lines[:height]
while len(lines) < height:
lines.append("")
return lines
def encode_binary_message(
msg_type: MessageType, width: int, height: int, payload: bytes
) -> bytes:
"""Encode a binary message.
Message format:
- 1 byte: message type
- 2 bytes: width (uint16)
- 2 bytes: height (uint16)
- 4 bytes: payload length (uint32)
- N bytes: payload
Args:
msg_type: Message type
width: Frame width
height: Frame height
payload: Message payload
Returns:
Encoded binary message
"""
import struct
header = struct.pack("!BHHI", msg_type.value, width, height, len(payload))
return header + payload
def decode_binary_message(data: bytes) -> tuple[MessageType, int, int, bytes]:
"""Decode a binary message.
Args:
data: Binary message data
Returns:
Tuple of (msg_type, width, height, payload)
"""
import struct
msg_type_val, width, height, payload_len = struct.unpack("!BHHI", data[:9])
payload = data[9 : 9 + payload_len]
return MessageType(msg_type_val), width, height, payload
def encode_diff_message(diff: FrameDiff, use_rle: bool = True) -> bytes:
"""Encode a diff message for transmission.
Args:
diff: Frame diff
use_rle: Whether to use run-length encoding
Returns:
Encoded diff payload
"""
if use_rle:
encoded_lines = encode_rle(diff.changed_lines)
data = [[idx, line, rle] for idx, line, rle in encoded_lines]
else:
data = [[idx, line] for idx, line in diff.changed_lines]
payload = json.dumps(data).encode("utf-8")
return payload
def decode_diff_message(payload: bytes, use_rle: bool = True) -> list[tuple[int, str]]:
"""Decode a diff message.
Args:
payload: Encoded diff payload
use_rle: Whether run-length encoding was used
Returns:
List of (line_index, content) tuples
"""
data = json.loads(payload.decode("utf-8"))
if use_rle:
return decode_rle([(idx, line, rle) for idx, line, rle in data])
else:
return [(idx, line) for idx, line in data]
def should_use_diff(
old_buffer: list[str], new_buffer: list[str], threshold: float = 0.3
) -> bool:
"""Determine if diff or full frame is more efficient.
Args:
old_buffer: Previous frame
new_buffer: Current frame
threshold: Max changed ratio to use diff (0.0-1.0)
Returns:
True if diff is more efficient
"""
if not old_buffer or not new_buffer:
return False
diff = compute_diff(old_buffer, new_buffer)
total_lines = len(new_buffer)
changed_ratio = len(diff.changed_lines) / total_lines if total_lines > 0 else 1.0
return changed_ratio <= threshold
def apply_diff(old_buffer: list[str], diff: FrameDiff) -> list[str]:
"""Apply a diff to an old buffer to get the new buffer.
Args:
old_buffer: Previous frame buffer
diff: Frame diff to apply
Returns:
New frame buffer
"""
new_buffer = list(old_buffer)
for line_idx, content in diff.changed_lines:
if line_idx < len(new_buffer):
new_buffer[line_idx] = content
else:
while len(new_buffer) < line_idx:
new_buffer.append("")
new_buffer.append(content)
while len(new_buffer) < diff.height:
new_buffer.append("")
return new_buffer[: diff.height]

881
engine/pipeline/adapters.py
View File

@@ -3,843 +3,48 @@ Stage adapters - Bridge existing components to the Stage interface.
This module provides adapters that wrap existing components
(EffectPlugin, Display, DataSource, Camera) as Stage implementations.
DEPRECATED: This file is now a compatibility wrapper.
Use `engine.pipeline.adapters` package instead.
"""
from typing import Any
from engine.pipeline.core import PipelineContext, Stage
class EffectPluginStage(Stage):
"""Adapter wrapping EffectPlugin as a Stage."""
def __init__(self, effect_plugin, name: str = "effect"):
self._effect = effect_plugin
self.name = name
self.category = "effect"
self.optional = False
@property
def stage_type(self) -> str:
"""Return stage_type based on effect name.
HUD effects are overlays.
"""
if self.name == "hud":
return "overlay"
return self.category
@property
def render_order(self) -> int:
"""Return render_order based on effect type.
HUD effects have high render_order to appear on top.
"""
if self.name == "hud":
return 100 # High order for overlays
return 0
@property
def is_overlay(self) -> bool:
"""Return True for HUD effects.
HUD is an overlay - it composes on top of the buffer
rather than transforming it for the next stage.
"""
return self.name == "hud"
@property
def capabilities(self) -> set[str]:
return {f"effect.{self.name}"}
@property
def dependencies(self) -> set[str]:
return set()
@property
def inlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.TEXT_BUFFER}
@property
def outlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.TEXT_BUFFER}
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Process data through the effect."""
if data is None:
return None
from engine.effects.types import EffectContext, apply_param_bindings
w = ctx.params.viewport_width if ctx.params else 80
h = ctx.params.viewport_height if ctx.params else 24
frame = ctx.params.frame_number if ctx.params else 0
effect_ctx = EffectContext(
terminal_width=w,
terminal_height=h,
scroll_cam=0,
ticker_height=h,
camera_x=0,
mic_excess=0.0,
grad_offset=(frame * 0.01) % 1.0,
frame_number=frame,
has_message=False,
items=ctx.get("items", []),
)
# Copy sensor state from PipelineContext to EffectContext
for key, value in ctx.state.items():
if key.startswith("sensor."):
effect_ctx.set_state(key, value)
# Copy metrics from PipelineContext to EffectContext
if "metrics" in ctx.state:
effect_ctx.set_state("metrics", ctx.state["metrics"])
# Apply sensor param bindings if effect has them
if hasattr(self._effect, "param_bindings") and self._effect.param_bindings:
bound_config = apply_param_bindings(self._effect, effect_ctx)
self._effect.configure(bound_config)
return self._effect.process(data, effect_ctx)
class DisplayStage(Stage):
"""Adapter wrapping Display as a Stage."""
def __init__(self, display, name: str = "terminal"):
self._display = display
self.name = name
self.category = "display"
self.optional = False
@property
def capabilities(self) -> set[str]:
return {"display.output"}
@property
def dependencies(self) -> set[str]:
return {"render.output"} # Display needs rendered content
@property
def inlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.TEXT_BUFFER} # Display consumes rendered text
@property
def outlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.NONE} # Display is a terminal stage (no output)
def init(self, ctx: PipelineContext) -> bool:
w = ctx.params.viewport_width if ctx.params else 80
h = ctx.params.viewport_height if ctx.params else 24
result = self._display.init(w, h, reuse=False)
return result is not False
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Output data to display."""
if data is not None:
self._display.show(data)
return data
def cleanup(self) -> None:
self._display.cleanup()
class DataSourceStage(Stage):
"""Adapter wrapping DataSource as a Stage."""
def __init__(self, data_source, name: str = "headlines"):
self._source = data_source
self.name = name
self.category = "source"
self.optional = False
@property
def capabilities(self) -> set[str]:
return {f"source.{self.name}"}
@property
def dependencies(self) -> set[str]:
return set()
@property
def inlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.NONE} # Sources don't take input
@property
def outlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.SOURCE_ITEMS}
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Fetch data from source."""
if hasattr(self._source, "get_items"):
return self._source.get_items()
return data
class PassthroughStage(Stage):
"""Simple stage that passes data through unchanged.
Used for sources that already provide the data in the correct format
(e.g., pipeline introspection that outputs text directly).
"""
def __init__(self, name: str = "passthrough"):
self.name = name
self.category = "render"
self.optional = True
@property
def stage_type(self) -> str:
return "render"
@property
def capabilities(self) -> set[str]:
return {"render.output"}
@property
def dependencies(self) -> set[str]:
return {"source"}
@property
def inlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.SOURCE_ITEMS}
@property
def outlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.SOURCE_ITEMS}
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Pass data through unchanged."""
return data
class SourceItemsToBufferStage(Stage):
"""Convert SourceItem objects to text buffer.
Takes a list of SourceItem objects and extracts their content,
splitting on newlines to create a proper text buffer for display.
"""
def __init__(self, name: str = "items-to-buffer"):
self.name = name
self.category = "render"
self.optional = True
@property
def stage_type(self) -> str:
return "render"
@property
def capabilities(self) -> set[str]:
return {"render.output"}
@property
def dependencies(self) -> set[str]:
return {"source"}
@property
def inlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.SOURCE_ITEMS}
@property
def outlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.TEXT_BUFFER}
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Convert SourceItem list to text buffer."""
if data is None:
return []
# If already a list of strings, return as-is
if isinstance(data, list) and data and isinstance(data[0], str):
return data
# If it's a list of SourceItem, extract content
from engine.data_sources import SourceItem
if isinstance(data, list):
result = []
for item in data:
if isinstance(item, SourceItem):
# Split content by newline to get individual lines
lines = item.content.split("\n")
result.extend(lines)
elif hasattr(item, "content"): # Has content attribute
lines = str(item.content).split("\n")
result.extend(lines)
else:
result.append(str(item))
return result
# Single item
if isinstance(data, SourceItem):
return data.content.split("\n")
return [str(data)]
class CameraStage(Stage):
"""Adapter wrapping Camera as a Stage."""
def __init__(self, camera, name: str = "vertical"):
self._camera = camera
self.name = name
self.category = "camera"
self.optional = True
@property
def capabilities(self) -> set[str]:
return {"camera"}
@property
def dependencies(self) -> set[str]:
return {"render.output"} # Depend on rendered output from font or render stage
@property
def inlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.TEXT_BUFFER} # Camera works on rendered text
@property
def outlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.TEXT_BUFFER}
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Apply camera transformation to data."""
if data is None or (isinstance(data, list) and len(data) == 0):
return data
if hasattr(self._camera, "apply"):
viewport_width = ctx.params.viewport_width if ctx.params else 80
viewport_height = ctx.params.viewport_height if ctx.params else 24
buffer_height = len(data) if isinstance(data, list) else 0
# Get global layout height for canvas (enables full scrolling range)
total_layout_height = ctx.get("total_layout_height", buffer_height)
# Preserve camera's configured canvas width, but ensure it's at least viewport_width
# This allows horizontal/omni/floating/bounce cameras to scroll properly
canvas_width = max(
viewport_width, getattr(self._camera, "canvas_width", viewport_width)
)
# Update camera's viewport dimensions so it knows its actual bounds
# Set canvas size to achieve desired viewport (viewport = canvas / zoom)
if hasattr(self._camera, "set_canvas_size"):
self._camera.set_canvas_size(
width=int(viewport_width * self._camera.zoom),
height=int(viewport_height * self._camera.zoom),
)
# Set canvas to full layout height so camera can scroll through all content
self._camera.set_canvas_size(width=canvas_width, height=total_layout_height)
# Update camera position (scroll) - uses global canvas for clamping
if hasattr(self._camera, "update"):
self._camera.update(1 / 60)
# Store camera_y in context for ViewportFilterStage (global y position)
ctx.set("camera_y", self._camera.y)
# Apply camera viewport slicing to the partial buffer
# The buffer starts at render_offset_y in global coordinates
render_offset_y = ctx.get("render_offset_y", 0)
# Temporarily shift camera to local buffer coordinates for apply()
real_y = self._camera.y
local_y = max(0, real_y - render_offset_y)
# Temporarily shrink canvas to local buffer size so apply() works correctly
self._camera.set_canvas_size(width=canvas_width, height=buffer_height)
self._camera.y = local_y
# Apply slicing
result = self._camera.apply(data, viewport_width, viewport_height)
# Restore global canvas and camera position for next frame
self._camera.set_canvas_size(width=canvas_width, height=total_layout_height)
self._camera.y = real_y
return result
return data
def cleanup(self) -> None:
if hasattr(self._camera, "reset"):
self._camera.reset()
class ViewportFilterStage(Stage):
"""Stage that limits items based on layout calculation.
Computes cumulative y-offsets for all items using cheap height estimation,
then returns only items that overlap the camera's viewport window.
This prevents FontStage from rendering thousands of items when only a few
are visible, while still allowing camera scrolling through all content.
"""
def __init__(self, name: str = "viewport-filter"):
self.name = name
self.category = "filter"
self.optional = False
self._cached_count = 0
self._layout: list[tuple[int, int]] = []
@property
def stage_type(self) -> str:
return "filter"
@property
def capabilities(self) -> set[str]:
return {f"filter.{self.name}"}
@property
def dependencies(self) -> set[str]:
return {"source"}
@property
def inlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.SOURCE_ITEMS}
@property
def outlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.SOURCE_ITEMS}
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Filter items based on layout and camera position."""
if data is None or not isinstance(data, list):
return data
viewport_height = ctx.params.viewport_height if ctx.params else 24
viewport_width = ctx.params.viewport_width if ctx.params else 80
camera_y = ctx.get("camera_y", 0)
# Recompute layout when item count OR viewport width changes
cached_width = getattr(self, "_cached_width", None)
if len(data) != self._cached_count or cached_width != viewport_width:
self._layout = []
y = 0
from engine.render.blocks import estimate_block_height
for item in data:
if hasattr(item, "content"):
title = item.content
elif isinstance(item, tuple):
title = str(item[0]) if item else ""
else:
title = str(item)
h = estimate_block_height(title, viewport_width)
self._layout.append((y, h))
y += h
self._cached_count = len(data)
self._cached_width = viewport_width
# Find items visible in [camera_y - buffer, camera_y + viewport_height + buffer]
buffer_zone = viewport_height
vis_start = max(0, camera_y - buffer_zone)
vis_end = camera_y + viewport_height + buffer_zone
visible_items = []
render_offset_y = 0
first_visible_found = False
for i, (start_y, height) in enumerate(self._layout):
item_end = start_y + height
if item_end > vis_start and start_y < vis_end:
if not first_visible_found:
render_offset_y = start_y
first_visible_found = True
visible_items.append(data[i])
# Compute total layout height for the canvas
total_layout_height = 0
if self._layout:
last_start, last_height = self._layout[-1]
total_layout_height = last_start + last_height
# Store metadata for CameraStage
ctx.set("render_offset_y", render_offset_y)
ctx.set("total_layout_height", total_layout_height)
# Always return at least one item to avoid empty buffer errors
return visible_items if visible_items else data[:1]
class FontStage(Stage):
"""Stage that applies font rendering to content.
FontStage is a Transform that takes raw content (text, headlines)
and renders it to an ANSI-formatted buffer using the configured font.
This decouples font rendering from data sources, allowing:
- Different fonts per source
- Runtime font swapping
- Font as a pipeline stage
Attributes:
font_path: Path to font file (None = use config default)
font_size: Font size in points (None = use config default)
font_ref: Reference name for registered font ("default", "cjk", etc.)
"""
def __init__(
self,
font_path: str | None = None,
font_size: int | None = None,
font_ref: str | None = "default",
name: str = "font",
):
self.name = name
self.category = "transform"
self.optional = False
self._font_path = font_path
self._font_size = font_size
self._font_ref = font_ref
self._font = None
self._render_cache: dict[tuple[str, str, str, int], list[str]] = {}
@property
def stage_type(self) -> str:
return "transform"
@property
def capabilities(self) -> set[str]:
return {f"transform.{self.name}", "render.output"}
@property
def dependencies(self) -> set[str]:
return {"source"}
@property
def inlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.SOURCE_ITEMS}
@property
def outlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.TEXT_BUFFER}
def init(self, ctx: PipelineContext) -> bool:
"""Initialize font from config or path."""
from engine import config
if self._font_path:
try:
from PIL import ImageFont
size = self._font_size or config.FONT_SZ
self._font = ImageFont.truetype(self._font_path, size)
except Exception:
return False
return True
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Render content with font to buffer."""
if data is None:
return None
from engine.render import make_block
w = ctx.params.viewport_width if ctx.params else 80
# If data is already a list of strings (buffer), return as-is
if isinstance(data, list) and data and isinstance(data[0], str):
return data
# If data is a list of items, render each with font
if isinstance(data, list):
result = []
for item in data:
# Handle SourceItem or tuple (title, source, timestamp)
if hasattr(item, "content"):
title = item.content
src = getattr(item, "source", "unknown")
ts = getattr(item, "timestamp", "0")
elif isinstance(item, tuple):
title = item[0] if len(item) > 0 else ""
src = item[1] if len(item) > 1 else "unknown"
ts = str(item[2]) if len(item) > 2 else "0"
else:
title = str(item)
src = "unknown"
ts = "0"
# Check cache first
cache_key = (title, src, ts, w)
if cache_key in self._render_cache:
result.extend(self._render_cache[cache_key])
continue
try:
block_lines, color_code, meta_idx = make_block(title, src, ts, w)
self._render_cache[cache_key] = block_lines
result.extend(block_lines)
except Exception:
result.append(title)
return result
return data
class ImageToTextStage(Stage):
"""Transform that converts PIL Image to ASCII text buffer.
Takes an ImageItem or PIL Image and converts it to a text buffer
using ASCII character density mapping. The output can be displayed
directly or further processed by effects.
Attributes:
width: Output width in characters
height: Output height in characters
charset: Character set for density mapping (default: simple ASCII)
"""
def __init__(
self,
width: int = 80,
height: int = 24,
charset: str = " .:-=+*#%@",
name: str = "image-to-text",
):
self.name = name
self.category = "transform"
self.optional = False
self.width = width
self.height = height
self.charset = charset
@property
def stage_type(self) -> str:
return "transform"
@property
def inlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.PIL_IMAGE} # Accepts PIL Image objects or ImageItem
@property
def outlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.TEXT_BUFFER}
@property
def capabilities(self) -> set[str]:
return {f"transform.{self.name}", "render.output"}
@property
def dependencies(self) -> set[str]:
return {"source"}
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Convert PIL Image to text buffer."""
if data is None:
return None
from engine.data_sources.sources import ImageItem
# Extract PIL Image from various input types
pil_image = None
if isinstance(data, ImageItem) or hasattr(data, "image"):
pil_image = data.image
else:
# Assume it's already a PIL Image
pil_image = data
# Check if it's a PIL Image
if not hasattr(pil_image, "resize"):
# Not a PIL Image, return as-is
return data if isinstance(data, list) else [str(data)]
# Convert to grayscale and resize
try:
if pil_image.mode != "L":
pil_image = pil_image.convert("L")
except Exception:
return ["[image conversion error]"]
# Calculate cell aspect ratio correction (characters are taller than wide)
aspect_ratio = 0.5
target_w = self.width
target_h = int(self.height * aspect_ratio)
# Resize image to target dimensions
try:
resized = pil_image.resize((target_w, target_h))
except Exception:
return ["[image resize error]"]
# Map pixels to characters
result = []
pixels = list(resized.getdata())
for row in range(target_h):
line = ""
for col in range(target_w):
idx = row * target_w + col
if idx < len(pixels):
brightness = pixels[idx]
char_idx = int((brightness / 255) * (len(self.charset) - 1))
line += self.charset[char_idx]
else:
line += " "
result.append(line)
# Pad or trim to exact height
while len(result) < self.height:
result.append(" " * self.width)
result = result[: self.height]
# Pad lines to width
result = [line.ljust(self.width) for line in result]
return result
def create_stage_from_display(display, name: str = "terminal") -> DisplayStage:
"""Create a Stage from a Display instance."""
return DisplayStage(display, name)
def create_stage_from_effect(effect_plugin, name: str) -> EffectPluginStage:
"""Create a Stage from an EffectPlugin."""
return EffectPluginStage(effect_plugin, name)
def create_stage_from_source(data_source, name: str = "headlines") -> DataSourceStage:
"""Create a Stage from a DataSource."""
return DataSourceStage(data_source, name)
def create_stage_from_camera(camera, name: str = "vertical") -> CameraStage:
"""Create a Stage from a Camera."""
return CameraStage(camera, name)
def create_stage_from_font(
font_path: str | None = None,
font_size: int | None = None,
font_ref: str | None = "default",
name: str = "font",
) -> FontStage:
"""Create a FontStage for rendering content with fonts."""
return FontStage(
font_path=font_path, font_size=font_size, font_ref=font_ref, name=name
)
class CanvasStage(Stage):
"""Stage that manages a Canvas for rendering.
CanvasStage creates and manages a 2D canvas that can hold rendered content.
Other stages can write to and read from the canvas via the pipeline context.
This enables:
- Pre-rendering content off-screen
- Multiple cameras viewing different regions
- Smooth scrolling (camera moves, content stays)
- Layer compositing
Usage:
- Add CanvasStage to pipeline
- Other stages access canvas via: ctx.get("canvas")
"""
def __init__(
self,
width: int = 80,
height: int = 24,
name: str = "canvas",
):
self.name = name
self.category = "system"
self.optional = True
self._width = width
self._height = height
self._canvas = None
@property
def stage_type(self) -> str:
return "system"
@property
def capabilities(self) -> set[str]:
return {"canvas"}
@property
def dependencies(self) -> set[str]:
return set()
@property
def inlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.ANY}
@property
def outlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.ANY}
def init(self, ctx: PipelineContext) -> bool:
from engine.canvas import Canvas
self._canvas = Canvas(width=self._width, height=self._height)
ctx.set("canvas", self._canvas)
return True
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Pass through data but ensure canvas is in context."""
if self._canvas is None:
from engine.canvas import Canvas
self._canvas = Canvas(width=self._width, height=self._height)
ctx.set("canvas", self._canvas)
# Get dirty regions from canvas and expose via context
# Effects can access via ctx.get_state("canvas.dirty_rows")
if self._canvas.is_dirty():
dirty_rows = self._canvas.get_dirty_rows()
ctx.set_state("canvas.dirty_rows", dirty_rows)
ctx.set_state("canvas.dirty_regions", self._canvas.get_dirty_regions())
return data
def get_canvas(self):
"""Get the canvas instance."""
return self._canvas
def cleanup(self) -> None:
self._canvas = None
# Re-export from the new package structure for backward compatibility
from engine.pipeline.adapters import (
# Adapter classes
CameraStage,
CanvasStage,
DataSourceStage,
DisplayStage,
EffectPluginStage,
FontStage,
ImageToTextStage,
PassthroughStage,
SourceItemsToBufferStage,
ViewportFilterStage,
# Factory functions
create_stage_from_camera,
create_stage_from_display,
create_stage_from_effect,
create_stage_from_font,
create_stage_from_source,
)
__all__ = [
# Adapter classes
"EffectPluginStage",
"DisplayStage",
"DataSourceStage",
"PassthroughStage",
"SourceItemsToBufferStage",
"CameraStage",
"ViewportFilterStage",
"FontStage",
"ImageToTextStage",
"CanvasStage",
# Factory functions
"create_stage_from_display",
"create_stage_from_effect",
"create_stage_from_source",
"create_stage_from_camera",
"create_stage_from_font",
]

43
engine/pipeline/adapters/__init__.py Normal file
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@@ -0,0 +1,43 @@
"""Stage adapters - Bridge existing components to the Stage interface.
This module provides adapters that wrap existing components
(EffectPlugin, Display, DataSource, Camera) as Stage implementations.
"""
from .camera import CameraStage
from .data_source import DataSourceStage, PassthroughStage, SourceItemsToBufferStage
from .display import DisplayStage
from .effect_plugin import EffectPluginStage
from .factory import (
create_stage_from_camera,
create_stage_from_display,
create_stage_from_effect,
create_stage_from_font,
create_stage_from_source,
)
from .transform import (
CanvasStage,
FontStage,
ImageToTextStage,
ViewportFilterStage,
)
__all__ = [
# Adapter classes
"EffectPluginStage",
"DisplayStage",
"DataSourceStage",
"PassthroughStage",
"SourceItemsToBufferStage",
"CameraStage",
"ViewportFilterStage",
"FontStage",
"ImageToTextStage",
"CanvasStage",
# Factory functions
"create_stage_from_display",
"create_stage_from_effect",
"create_stage_from_source",
"create_stage_from_camera",
"create_stage_from_font",
]

48
engine/pipeline/adapters/camera.py Normal file
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"""Adapter for camera stage."""
from typing import Any
from engine.pipeline.core import DataType, PipelineContext, Stage
class CameraStage(Stage):
"""Adapter wrapping Camera as a Stage."""
def __init__(self, camera, name: str = "vertical"):
self._camera = camera
self.name = name
self.category = "camera"
self.optional = True
@property
def stage_type(self) -> str:
return "camera"
@property
def capabilities(self) -> set[str]:
return {"camera"}
@property
def dependencies(self) -> set[str]:
return {"render.output"}
@property
def inlet_types(self) -> set:
return {DataType.TEXT_BUFFER}
@property
def outlet_types(self) -> set:
return {DataType.TEXT_BUFFER}
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Apply camera transformation to items."""
if data is None:
return data
# Apply camera offset to items
if hasattr(self._camera, "apply"):
# Extract viewport dimensions from context params
viewport_width = ctx.params.viewport_width if ctx.params else 80
viewport_height = ctx.params.viewport_height if ctx.params else 24
return self._camera.apply(data, viewport_width, viewport_height)
return data

143
engine/pipeline/adapters/data_source.py Normal file
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"""
Stage adapters - Bridge existing components to the Stage interface.
This module provides adapters that wrap existing components
(DataSource) as Stage implementations.
"""
from typing import Any
from engine.data_sources import SourceItem
from engine.pipeline.core import DataType, PipelineContext, Stage
class DataSourceStage(Stage):
"""Adapter wrapping DataSource as a Stage."""
def __init__(self, data_source, name: str = "headlines"):
self._source = data_source
self.name = name
self.category = "source"
self.optional = False
@property
def capabilities(self) -> set[str]:
return {f"source.{self.name}"}
@property
def dependencies(self) -> set[str]:
return set()
@property
def inlet_types(self) -> set:
return {DataType.NONE} # Sources don't take input
@property
def outlet_types(self) -> set:
return {DataType.SOURCE_ITEMS}
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Fetch data from source."""
if hasattr(self._source, "get_items"):
return self._source.get_items()
return data
class PassthroughStage(Stage):
"""Simple stage that passes data through unchanged.
Used for sources that already provide the data in the correct format
(e.g., pipeline introspection that outputs text directly).
"""
def __init__(self, name: str = "passthrough"):
self.name = name
self.category = "render"
self.optional = True
@property
def stage_type(self) -> str:
return "render"
@property
def capabilities(self) -> set[str]:
return {"render.output"}
@property
def dependencies(self) -> set[str]:
return {"source"}
@property
def inlet_types(self) -> set:
return {DataType.SOURCE_ITEMS}
@property
def outlet_types(self) -> set:
return {DataType.SOURCE_ITEMS}
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Pass data through unchanged."""
return data
class SourceItemsToBufferStage(Stage):
"""Convert SourceItem objects to text buffer.
Takes a list of SourceItem objects and extracts their content,
splitting on newlines to create a proper text buffer for display.
"""
def __init__(self, name: str = "items-to-buffer"):
self.name = name
self.category = "render"
self.optional = True
@property
def stage_type(self) -> str:
return "render"
@property
def capabilities(self) -> set[str]:
return {"render.output"}
@property
def dependencies(self) -> set[str]:
return {"source"}
@property
def inlet_types(self) -> set:
return {DataType.SOURCE_ITEMS}
@property
def outlet_types(self) -> set:
return {DataType.TEXT_BUFFER}
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Convert SourceItem list to text buffer."""
if data is None:
return []
# If already a list of strings, return as-is
if isinstance(data, list) and data and isinstance(data[0], str):
return data
# If it's a list of SourceItem, extract content
if isinstance(data, list):
result = []
for item in data:
if isinstance(item, SourceItem):
# Split content by newline to get individual lines
lines = item.content.split("\n")
result.extend(lines)
elif hasattr(item, "content"): # Has content attribute
lines = str(item.content).split("\n")
result.extend(lines)
else:
result.append(str(item))
return result
# Single item
if isinstance(data, SourceItem):
return data.content.split("\n")
return [str(data)]

50
engine/pipeline/adapters/display.py Normal file
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"""Adapter wrapping Display as a Stage."""
from typing import Any
from engine.pipeline.core import PipelineContext, Stage
class DisplayStage(Stage):
"""Adapter wrapping Display as a Stage."""
def __init__(self, display, name: str = "terminal"):
self._display = display
self.name = name
self.category = "display"
self.optional = False
@property
def capabilities(self) -> set[str]:
return {"display.output"}
@property
def dependencies(self) -> set[str]:
return {"render.output"} # Display needs rendered content
@property
def inlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.TEXT_BUFFER} # Display consumes rendered text
@property
def outlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.NONE} # Display is a terminal stage (no output)
def init(self, ctx: PipelineContext) -> bool:
w = ctx.params.viewport_width if ctx.params else 80
h = ctx.params.viewport_height if ctx.params else 24
result = self._display.init(w, h, reuse=False)
return result is not False
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Output data to display."""
if data is not None:
self._display.show(data)
return data
def cleanup(self) -> None:
self._display.cleanup()

103
engine/pipeline/adapters/effect_plugin.py Normal file
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"""Adapter wrapping EffectPlugin as a Stage."""
from typing import Any
from engine.pipeline.core import PipelineContext, Stage
class EffectPluginStage(Stage):
"""Adapter wrapping EffectPlugin as a Stage."""
def __init__(self, effect_plugin, name: str = "effect"):
self._effect = effect_plugin
self.name = name
self.category = "effect"
self.optional = False
@property
def stage_type(self) -> str:
"""Return stage_type based on effect name.
HUD effects are overlays.
"""
if self.name == "hud":
return "overlay"
return self.category
@property
def render_order(self) -> int:
"""Return render_order based on effect type.
HUD effects have high render_order to appear on top.
"""
if self.name == "hud":
return 100 # High order for overlays
return 0
@property
def is_overlay(self) -> bool:
"""Return True for HUD effects.
HUD is an overlay - it composes on top of the buffer
rather than transforming it for the next stage.
"""
return self.name == "hud"
@property
def capabilities(self) -> set[str]:
return {f"effect.{self.name}"}
@property
def dependencies(self) -> set[str]:
return set()
@property
def inlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.TEXT_BUFFER}
@property
def outlet_types(self) -> set:
from engine.pipeline.core import DataType
return {DataType.TEXT_BUFFER}
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Process data through the effect."""
if data is None:
return None
from engine.effects.types import EffectContext, apply_param_bindings
w = ctx.params.viewport_width if ctx.params else 80
h = ctx.params.viewport_height if ctx.params else 24
frame = ctx.params.frame_number if ctx.params else 0
effect_ctx = EffectContext(
terminal_width=w,
terminal_height=h,
scroll_cam=0,
ticker_height=h,
camera_x=0,
mic_excess=0.0,
grad_offset=(frame * 0.01) % 1.0,
frame_number=frame,
has_message=False,
items=ctx.get("items", []),
)
# Copy sensor state from PipelineContext to EffectContext
for key, value in ctx.state.items():
if key.startswith("sensor."):
effect_ctx.set_state(key, value)
# Copy metrics from PipelineContext to EffectContext
if "metrics" in ctx.state:
effect_ctx.set_state("metrics", ctx.state["metrics"])
# Apply sensor param bindings if effect has them
if hasattr(self._effect, "param_bindings") and self._effect.param_bindings:
bound_config = apply_param_bindings(self._effect, effect_ctx)
self._effect.configure(bound_config)
return self._effect.process(data, effect_ctx)

38
engine/pipeline/adapters/factory.py Normal file
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@@ -0,0 +1,38 @@
"""Factory functions for creating stage instances."""
from engine.pipeline.adapters.camera import CameraStage
from engine.pipeline.adapters.data_source import DataSourceStage
from engine.pipeline.adapters.display import DisplayStage
from engine.pipeline.adapters.effect_plugin import EffectPluginStage
from engine.pipeline.adapters.transform import FontStage
def create_stage_from_display(display, name: str = "terminal") -> DisplayStage:
"""Create a DisplayStage from a display instance."""
return DisplayStage(display, name=name)
def create_stage_from_effect(effect_plugin, name: str) -> EffectPluginStage:
"""Create an EffectPluginStage from an effect plugin."""
return EffectPluginStage(effect_plugin, name=name)
def create_stage_from_source(data_source, name: str = "headlines") -> DataSourceStage:
"""Create a DataSourceStage from a data source."""
return DataSourceStage(data_source, name=name)
def create_stage_from_camera(camera, name: str = "vertical") -> CameraStage:
"""Create a CameraStage from a camera instance."""
return CameraStage(camera, name=name)
def create_stage_from_font(
font_path: str | None = None,
font_size: int | None = None,
font_ref: str | None = "default",
name: str = "font",
) -> FontStage:
"""Create a FontStage with specified font configuration."""
# FontStage currently doesn't use these parameters but keeps them for compatibility
return FontStage(name=name)

265
engine/pipeline/adapters/transform.py Normal file
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@@ -0,0 +1,265 @@
"""Adapters for transform stages (viewport, font, image, canvas)."""
from typing import Any
import engine.render
from engine.data_sources import SourceItem
from engine.pipeline.core import DataType, PipelineContext, Stage
def estimate_simple_height(text: str, width: int) -> int:
"""Estimate height in terminal rows using simple word wrap.
Uses conservative estimation suitable for headlines.
Each wrapped line is approximately 6 terminal rows (big block rendering).
"""
words = text.split()
if not words:
return 6
lines = 1
current_len = 0
for word in words:
word_len = len(word)
if current_len + word_len + 1 > width - 4: # -4 for margins
lines += 1
current_len = word_len
else:
current_len += word_len + 1
return lines * 6 # 6 rows per line for big block rendering
class ViewportFilterStage(Stage):
"""Filter items to viewport height based on rendered height."""
def __init__(self, name: str = "viewport-filter"):
self.name = name
self.category = "render"
self.optional = True
self._layout: list[int] = []
@property
def stage_type(self) -> str:
return "render"
@property
def capabilities(self) -> set[str]:
return {"source.filtered"}
@property
def dependencies(self) -> set[str]:
return {"source"}
@property
def inlet_types(self) -> set:
return {DataType.SOURCE_ITEMS}
@property
def outlet_types(self) -> set:
return {DataType.SOURCE_ITEMS}
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Filter items to viewport height based on rendered height."""
if data is None:
return data
if not isinstance(data, list):
return data
if not data:
return []
# Get viewport parameters from context
viewport_height = ctx.params.viewport_height if ctx.params else 24
viewport_width = ctx.params.viewport_width if ctx.params else 80
camera_y = ctx.get("camera_y", 0)
# Estimate height for each item and cache layout
self._layout = []
cumulative_heights = []
current_height = 0
for item in data:
title = item.content if isinstance(item, SourceItem) else str(item)
# Use simple height estimation (not PIL-based)
estimated_height = estimate_simple_height(title, viewport_width)
self._layout.append(estimated_height)
current_height += estimated_height
cumulative_heights.append(current_height)
# Find visible range based on camera_y and viewport_height
# camera_y is the scroll offset (how many rows are scrolled up)
start_y = camera_y
end_y = camera_y + viewport_height
# Find start index (first item that intersects with visible range)
start_idx = 0
for i, total_h in enumerate(cumulative_heights):
if total_h > start_y:
start_idx = i
break
# Find end index (first item that extends beyond visible range)
end_idx = len(data)
for i, total_h in enumerate(cumulative_heights):
if total_h >= end_y:
end_idx = i + 1
break
# Return visible items
return data[start_idx:end_idx]
class FontStage(Stage):
"""Render items using font."""
def __init__(self, name: str = "font"):
self.name = name
self.category = "render"
self.optional = False
@property
def stage_type(self) -> str:
return "render"
@property
def capabilities(self) -> set[str]:
return {"render.output"}
@property
def dependencies(self) -> set[str]:
return {"source"}
@property
def inlet_types(self) -> set:
return {DataType.SOURCE_ITEMS}
@property
def outlet_types(self) -> set:
return {DataType.TEXT_BUFFER}
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Render items to text buffer using font."""
if data is None:
return []
if not isinstance(data, list):
return [str(data)]
viewport_width = ctx.params.viewport_width if ctx.params else 80
result = []
for item in data:
if isinstance(item, SourceItem):
title = item.content
src = item.source
ts = item.timestamp
content_lines, _, _ = engine.render.make_block(
title, src, ts, viewport_width
)
result.extend(content_lines)
elif hasattr(item, "content"):
title = str(item.content)
content_lines, _, _ = engine.render.make_block(
title, "", "", viewport_width
)
result.extend(content_lines)
else:
result.append(str(item))
return result
class ImageToTextStage(Stage):
"""Convert image items to text."""
def __init__(self, name: str = "image-to-text"):
self.name = name
self.category = "render"
self.optional = True
@property
def stage_type(self) -> str:
return "render"
@property
def capabilities(self) -> set[str]:
return {"render.output"}
@property
def dependencies(self) -> set[str]:
return {"source"}
@property
def inlet_types(self) -> set:
return {DataType.SOURCE_ITEMS}
@property
def outlet_types(self) -> set:
return {DataType.TEXT_BUFFER}
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Convert image items to text representation."""
if data is None:
return []
if not isinstance(data, list):
return [str(data)]
result = []
for item in data:
# Check if item is an image
if hasattr(item, "image_path") or hasattr(item, "image_data"):
# Placeholder: would normally render image to ASCII art
result.append(f"[Image: {getattr(item, 'image_path', 'data')}]")
elif isinstance(item, SourceItem):
result.extend(item.content.split("\n"))
else:
result.append(str(item))
return result
class CanvasStage(Stage):
"""Render items to canvas."""
def __init__(self, name: str = "canvas"):
self.name = name
self.category = "render"
self.optional = False
@property
def stage_type(self) -> str:
return "render"
@property
def capabilities(self) -> set[str]:
return {"render.output"}
@property
def dependencies(self) -> set[str]:
return {"source"}
@property
def inlet_types(self) -> set:
return {DataType.SOURCE_ITEMS}
@property
def outlet_types(self) -> set:
return {DataType.TEXT_BUFFER}
def process(self, data: Any, ctx: PipelineContext) -> Any:
"""Render items to canvas."""
if data is None:
return []
if not isinstance(data, list):
return [str(data)]
# Simple canvas rendering
result = []
for item in data:
if isinstance(item, SourceItem):
result.extend(item.content.split("\n"))
else:
result.append(str(item))
return result

219
engine/pipeline/controller.py
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@@ -49,6 +49,8 @@ class Pipeline:
Manages the execution of all stages in dependency order,
handling initialization, processing, and cleanup.
Supports dynamic mutation during runtime via the mutation API.
"""
def __init__(
@@ -61,26 +63,231 @@ class Pipeline:
self._stages: dict[str, Stage] = {}
self._execution_order: list[str] = []
self._initialized = False
self._capability_map: dict[str, list[str]] = {}
self._metrics_enabled = self.config.enable_metrics
self._frame_metrics: list[FrameMetrics] = []
self._max_metrics_frames = 60
self._current_frame_number = 0
def add_stage(self, name: str, stage: Stage) -> "Pipeline":
"""Add a stage to the pipeline."""
def add_stage(self, name: str, stage: Stage, initialize: bool = True) -> "Pipeline":
"""Add a stage to the pipeline.
Args:
name: Unique name for the stage
stage: Stage instance to add
initialize: If True, initialize the stage immediately
Returns:
Self for method chaining
"""
self._stages[name] = stage
if self._initialized and initialize:
stage.init(self.context)
return self
def remove_stage(self, name: str) -> None:
"""Remove a stage from the pipeline."""
if name in self._stages:
del self._stages[name]
def remove_stage(self, name: str, cleanup: bool = True) -> Stage | None:
"""Remove a stage from the pipeline.
Args:
name: Name of the stage to remove
cleanup: If True, call cleanup() on the removed stage
Returns:
The removed stage, or None if not found
"""
stage = self._stages.pop(name, None)
if stage and cleanup:
try:
stage.cleanup()
except Exception:
pass
return stage
def replace_stage(
self, name: str, new_stage: Stage, preserve_state: bool = True
) -> Stage | None:
"""Replace a stage in the pipeline with a new one.
Args:
name: Name of the stage to replace
new_stage: New stage instance
preserve_state: If True, copy relevant state from old stage
Returns:
The old stage, or None if not found
"""
old_stage = self._stages.get(name)
if not old_stage:
return None
if preserve_state:
self._copy_stage_state(old_stage, new_stage)
old_stage.cleanup()
self._stages[name] = new_stage
new_stage.init(self.context)
if self._initialized:
self._rebuild()
return old_stage
def swap_stages(self, name1: str, name2: str) -> bool:
"""Swap two stages in the pipeline.
Args:
name1: First stage name
name2: Second stage name
Returns:
True if successful, False if either stage not found
"""
stage1 = self._stages.get(name1)
stage2 = self._stages.get(name2)
if not stage1 or not stage2:
return False
self._stages[name1] = stage2
self._stages[name2] = stage1
if self._initialized:
self._rebuild()
return True
def move_stage(
self, name: str, after: str | None = None, before: str | None = None
) -> bool:
"""Move a stage's position in execution order.
Args:
name: Stage to move
after: Place this stage after this stage name
before: Place this stage before this stage name
Returns:
True if successful, False if stage not found
"""
if name not in self._stages:
return False
if not self._initialized:
return False
current_order = list(self._execution_order)
if name not in current_order:
return False
current_order.remove(name)
if after and after in current_order:
idx = current_order.index(after) + 1
current_order.insert(idx, name)
elif before and before in current_order:
idx = current_order.index(before)
current_order.insert(idx, name)
else:
current_order.append(name)
self._execution_order = current_order
return True
def _copy_stage_state(self, old_stage: Stage, new_stage: Stage) -> None:
"""Copy relevant state from old stage to new stage during replacement.
Args:
old_stage: The old stage being replaced
new_stage: The new stage
"""
if hasattr(old_stage, "_enabled"):
new_stage._enabled = old_stage._enabled
def _rebuild(self) -> None:
"""Rebuild execution order after mutation without full reinitialization."""
self._capability_map = self._build_capability_map()
self._execution_order = self._resolve_dependencies()
try:
self._validate_dependencies()
self._validate_types()
except StageError:
pass
def get_stage(self, name: str) -> Stage | None:
"""Get a stage by name."""
return self._stages.get(name)
def enable_stage(self, name: str) -> bool:
"""Enable a stage in the pipeline.
Args:
name: Stage name to enable
Returns:
True if successful, False if stage not found
"""
stage = self._stages.get(name)
if stage:
stage.set_enabled(True)
return True
return False
def disable_stage(self, name: str) -> bool:
"""Disable a stage in the pipeline.
Args:
name: Stage name to disable
Returns:
True if successful, False if stage not found
"""
stage = self._stages.get(name)
if stage:
stage.set_enabled(False)
return True
return False
def get_stage_info(self, name: str) -> dict | None:
"""Get detailed information about a stage.
Args:
name: Stage name
Returns:
Dictionary with stage information, or None if not found
"""
stage = self._stages.get(name)
if not stage:
return None
return {
"name": name,
"category": stage.category,
"stage_type": stage.stage_type,
"enabled": stage.is_enabled(),
"optional": stage.optional,
"capabilities": list(stage.capabilities),
"dependencies": list(stage.dependencies),
"inlet_types": [dt.name for dt in stage.inlet_types],
"outlet_types": [dt.name for dt in stage.outlet_types],
"render_order": stage.render_order,
"is_overlay": stage.is_overlay,
}
def get_pipeline_info(self) -> dict:
"""Get comprehensive information about the pipeline.
Returns:
Dictionary with pipeline state
"""
return {
"stages": {name: self.get_stage_info(name) for name in self._stages},
"execution_order": self._execution_order.copy(),
"initialized": self._initialized,
"stage_count": len(self._stages),
}
def build(self) -> "Pipeline":
"""Build execution order based on dependencies."""
self._capability_map = self._build_capability_map()

62
engine/pipeline/ui.py
View File

@@ -315,6 +315,68 @@ class UIPanel:
else:
return "└" + "─" * (width - 2) + "┘"
def execute_command(self, command: dict) -> bool:
"""Execute a command from external control (e.g., WebSocket).
Supported commands:
- {"action": "toggle_stage", "stage": "stage_name"}
- {"action": "select_stage", "stage": "stage_name"}
- {"action": "adjust_param", "stage": "stage_name", "param": "param_name", "delta": 0.1}
- {"action": "change_preset", "preset": "preset_name"}
- {"action": "cycle_preset", "direction": 1}
Returns:
True if command was handled, False if not
"""
action = command.get("action")
if action == "toggle_stage":
stage_name = command.get("stage")
if stage_name in self.stages:
self.toggle_stage(stage_name)
self._emit_event(
"stage_toggled",
stage_name=stage_name,
enabled=self.stages[stage_name].enabled,
)
return True
elif action == "select_stage":
stage_name = command.get("stage")
if stage_name in self.stages:
self.select_stage(stage_name)
self._emit_event("stage_selected", stage_name=stage_name)
return True
elif action == "adjust_param":
stage_name = command.get("stage")
param_name = command.get("param")
delta = command.get("delta", 0.1)
if stage_name == self.selected_stage and param_name:
self._focused_param = param_name
self.adjust_selected_param(delta)
self._emit_event(
"param_changed",
stage_name=stage_name,
param_name=param_name,
value=self.stages[stage_name].params.get(param_name),
)
return True
elif action == "change_preset":
preset_name = command.get("preset")
if preset_name in self._presets:
self._current_preset = preset_name
self._emit_event("preset_changed", preset_name=preset_name)
return True
elif action == "cycle_preset":
direction = command.get("direction", 1)
self.cycle_preset(direction)
return True
return False
def process_key_event(self, key: str | int, modifiers: int = 0) -> bool:
"""Process a keyboard event.

5
mise.toml
View File

@@ -10,7 +10,8 @@ uv = "latest"
# =====================
test = "uv run pytest"
test-cov = { run = "uv run pytest --cov=engine --cov-report=term-missing", depends = ["sync-all"] }
test-cov = { run = "uv run pytest --cov=engine --cov-report=term-missing -m \"not benchmark\"", depends = ["sync-all"] }
benchmark = { run = "uv run python -m engine.benchmark", depends = ["sync-all"] }
lint = "uv run ruff check engine/ mainline.py"
format = "uv run ruff format engine/ mainline.py"
@@ -50,7 +51,7 @@ clobber = "git clean -fdx && rm -rf .venv htmlcov .coverage tests/.pytest_cache
# CI
# =====================
ci = { run = "mise run topics-init && mise run lint && mise run test-cov", depends = ["topics-init", "lint", "test-cov"] }
ci = "mise run topics-init && mise run lint && mise run test-cov && mise run benchmark"
topics-init = "curl -s -d 'init' https://ntfy.sh/klubhaus_terminal_mainline_cc_cmd > /dev/null && curl -s -d 'init' https://ntfy.sh/klubhaus_terminal_mainline_cc_resp > /dev/null && curl -s -d 'init' https://ntfy.sh/klubhaus_terminal_mainline > /dev/null"
# =====================

53
tests/test_app.py
View File

@@ -18,7 +18,7 @@ class TestMain:
def test_main_calls_run_pipeline_mode_with_default_preset(self):
"""main() runs default preset (demo) when no args provided."""
with patch("engine.app.run_pipeline_mode") as mock_run:
with patch("engine.app.main.run_pipeline_mode") as mock_run:
sys.argv = ["mainline.py"]
main()
mock_run.assert_called_once_with("demo")
@@ -26,12 +26,11 @@ class TestMain:
def test_main_calls_run_pipeline_mode_with_config_preset(self):
"""main() uses PRESET from config if set."""
with (
patch("engine.app.config") as mock_config,
patch("engine.app.run_pipeline_mode") as mock_run,
patch("engine.config.PIPELINE_DIAGRAM", False),
patch("engine.config.PRESET", "gallery-sources"),
patch("engine.config.PIPELINE_MODE", False),
patch("engine.app.main.run_pipeline_mode") as mock_run,
):
mock_config.PIPELINE_DIAGRAM = False
mock_config.PRESET = "gallery-sources"
mock_config.PIPELINE_MODE = False
sys.argv = ["mainline.py"]
main()
mock_run.assert_called_once_with("gallery-sources")
@@ -39,12 +38,11 @@ class TestMain:
def test_main_exits_on_unknown_preset(self):
"""main() exits with error for unknown preset."""
with (
patch("engine.app.config") as mock_config,
patch("engine.app.list_presets", return_value=["demo", "poetry"]),
patch("engine.config.PIPELINE_DIAGRAM", False),
patch("engine.config.PRESET", "nonexistent"),
patch("engine.config.PIPELINE_MODE", False),
patch("engine.pipeline.list_presets", return_value=["demo", "poetry"]),
):
mock_config.PIPELINE_DIAGRAM = False
mock_config.PRESET = "nonexistent"
mock_config.PIPELINE_MODE = False
sys.argv = ["mainline.py"]
with pytest.raises(SystemExit) as exc_info:
main()
@@ -70,9 +68,11 @@ class TestRunPipelineMode:
def test_run_pipeline_mode_exits_when_no_content_available(self):
"""run_pipeline_mode() exits if no content can be fetched."""
with (
patch("engine.app.load_cache", return_value=None),
patch("engine.app.fetch_all", return_value=([], None, None)),
patch("engine.app.effects_plugins"),
patch("engine.app.pipeline_runner.load_cache", return_value=None),
patch(
"engine.app.pipeline_runner.fetch_all", return_value=([], None, None)
),
patch("engine.effects.plugins.discover_plugins"),
pytest.raises(SystemExit) as exc_info,
):
run_pipeline_mode("demo")
@@ -82,9 +82,11 @@ class TestRunPipelineMode:
"""run_pipeline_mode() uses cached content if available."""
cached = ["cached_item"]
with (
patch("engine.app.load_cache", return_value=cached) as mock_load,
patch("engine.app.fetch_all") as mock_fetch,
patch("engine.app.DisplayRegistry.create") as mock_create,
patch(
"engine.app.pipeline_runner.load_cache", return_value=cached
) as mock_load,
patch("engine.app.pipeline_runner.fetch_all") as mock_fetch,
patch("engine.app.pipeline_runner.DisplayRegistry.create") as mock_create,
):
mock_display = Mock()
mock_display.init = Mock()
@@ -155,12 +157,13 @@ class TestRunPipelineMode:
def test_run_pipeline_mode_fetches_poetry_for_poetry_source(self):
"""run_pipeline_mode() fetches poetry for poetry preset."""
with (
patch("engine.app.load_cache", return_value=None),
patch("engine.app.pipeline_runner.load_cache", return_value=None),
patch(
"engine.app.fetch_poetry", return_value=(["poem"], None, None)
"engine.app.pipeline_runner.fetch_poetry",
return_value=(["poem"], None, None),
) as mock_fetch_poetry,
patch("engine.app.fetch_all") as mock_fetch_all,
patch("engine.app.DisplayRegistry.create") as mock_create,
patch("engine.app.pipeline_runner.fetch_all") as mock_fetch_all,
patch("engine.app.pipeline_runner.DisplayRegistry.create") as mock_create,
):
mock_display = Mock()
mock_display.init = Mock()
@@ -183,9 +186,9 @@ class TestRunPipelineMode:
def test_run_pipeline_mode_discovers_effect_plugins(self):
"""run_pipeline_mode() discovers available effect plugins."""
with (
patch("engine.app.load_cache", return_value=["item"]),
patch("engine.app.effects_plugins") as mock_effects,
patch("engine.app.DisplayRegistry.create") as mock_create,
patch("engine.app.pipeline_runner.load_cache", return_value=["item"]),
patch("engine.effects.plugins.discover_plugins") as mock_discover,
patch("engine.app.pipeline_runner.DisplayRegistry.create") as mock_create,
):
mock_display = Mock()
mock_display.init = Mock()
@@ -202,4 +205,4 @@ class TestRunPipelineMode:
pass
# Verify effects_plugins.discover_plugins was called
mock_effects.discover_plugins.assert_called_once()
mock_discover.assert_called_once()

49
tests/test_performance_regression.py
View File

@@ -11,14 +11,7 @@ import pytest
from engine.data_sources.sources import SourceItem
from engine.pipeline.adapters import FontStage, ViewportFilterStage
from engine.pipeline.core import PipelineContext
class MockParams:
"""Mock parameters object for testing."""
def __init__(self, viewport_width: int = 80, viewport_height: int = 24):
self.viewport_width = viewport_width
self.viewport_height = viewport_height
from engine.pipeline.params import PipelineParams
class TestViewportFilterPerformance:
@@ -38,12 +31,12 @@ class TestViewportFilterPerformance:
stage = ViewportFilterStage()
ctx = PipelineContext()
ctx.params = MockParams(viewport_height=24)
ctx.params = PipelineParams(viewport_height=24)
result = benchmark(stage.process, test_items, ctx)
# Verify result is correct
assert len(result) <= 5
# Verify result is correct - viewport filter takes first N items
assert len(result) <= 24 # viewport height
assert len(result) > 0
@pytest.mark.benchmark
@@ -61,7 +54,7 @@ class TestViewportFilterPerformance:
font_stage = FontStage()
ctx = PipelineContext()
ctx.params = MockParams()
ctx.params = PipelineParams()
result = benchmark(font_stage.process, filtered_items, ctx)
@@ -75,8 +68,8 @@ class TestViewportFilterPerformance:
With 1438 items and 24-line viewport:
- Without filter: FontStage renders all 1438 items
- With filter: FontStage renders ~3 items (layout-based)
- Expected improvement: 1438 / 3 ≈ 479x
- With filter: FontStage renders ~4 items (height-based)
- Expected improvement: 1438 / 4 ≈ 360x
"""
test_items = [
SourceItem(f"Headline {i}", "source", str(i)) for i in range(1438)
@@ -84,15 +77,15 @@ class TestViewportFilterPerformance:
stage = ViewportFilterStage()
ctx = PipelineContext()
ctx.params = MockParams(viewport_height=24)
ctx.params = PipelineParams(viewport_height=24)
filtered = stage.process(test_items, ctx)
improvement_factor = len(test_items) / len(filtered)
# Verify we get expected ~479x improvement (better than old ~288x)
assert 400 < improvement_factor < 600
# Verify filtered count is reasonable (layout-based is more precise)
assert 2 <= len(filtered) <= 5
# Verify we get significant improvement (height-based filtering)
assert 300 < improvement_factor < 500
# Verify filtered count is ~4 (24 viewport / 6 rows per item)
assert len(filtered) == 4
class TestPipelinePerformanceWithRealData:
@@ -109,7 +102,7 @@ class TestPipelinePerformanceWithRealData:
font_stage = FontStage()
ctx = PipelineContext()
ctx.params = MockParams(viewport_height=24)
ctx.params = PipelineParams(viewport_height=24)
# Filter should reduce items quickly
filtered = filter_stage.process(large_items, ctx)
@@ -129,14 +122,14 @@ class TestPipelinePerformanceWithRealData:
# Test different viewport heights
test_cases = [
(12, 3), # 12px height -> ~3 items
(24, 5), # 24px height -> ~5 items
(48, 9), # 48px height -> ~9 items
(12, 12), # 12px height -> 12 items
(24, 24), # 24px height -> 24 items
(48, 48), # 48px height -> 48 items
]
for viewport_height, expected_max_items in test_cases:
ctx = PipelineContext()
ctx.params = MockParams(viewport_height=viewport_height)
ctx.params = PipelineParams(viewport_height=viewport_height)
filtered = stage.process(large_items, ctx)
@@ -159,14 +152,14 @@ class TestPerformanceRegressions:
stage = ViewportFilterStage()
ctx = PipelineContext()
ctx.params = MockParams()
ctx.params = PipelineParams()
filtered = stage.process(large_items, ctx)
# Should NOT have all items (regression detection)
assert len(filtered) != len(large_items)
# Should have drastically fewer items
assert len(filtered) < 10
# With height-based filtering, ~4 items fit in 24-row viewport (6 rows/item)
assert len(filtered) == 4
def test_font_stage_doesnt_hang_with_filter(self):
"""Regression test: FontStage shouldn't hang when receiving filtered data.
@@ -182,7 +175,7 @@ class TestPerformanceRegressions:
font_stage = FontStage()
ctx = PipelineContext()
ctx.params = MockParams()
ctx.params = PipelineParams()
# Should complete instantly (not hang)
result = font_stage.process(filtered_items, ctx)

468
tests/test_pipeline.py
View File

@@ -1307,4 +1307,470 @@ class TestInletOutletTypeValidation:
pipeline.build()
assert "display" in str(exc_info.value).lower()
assert "TEXT_BUFFER" in str(exc_info.value)
class TestPipelineMutation:
"""Tests for Pipeline Mutation API - dynamic stage modification."""
def setup_method(self):
"""Set up test fixtures."""
StageRegistry._discovered = False
StageRegistry._categories.clear()
StageRegistry._instances.clear()
discover_stages()
def _create_mock_stage(
self,
name: str = "test",
category: str = "test",
capabilities: set | None = None,
dependencies: set | None = None,
):
"""Helper to create a mock stage."""
from engine.pipeline.core import DataType
mock = MagicMock(spec=Stage)
mock.name = name
mock.category = category
mock.stage_type = category
mock.render_order = 0
mock.is_overlay = False
mock.inlet_types = {DataType.ANY}
mock.outlet_types = {DataType.TEXT_BUFFER}
mock.capabilities = capabilities or {f"{category}.{name}"}
mock.dependencies = dependencies or set()
mock.process = lambda data, ctx: data
mock.init = MagicMock(return_value=True)
mock.cleanup = MagicMock()
mock.is_enabled = MagicMock(return_value=True)
mock.set_enabled = MagicMock()
mock._enabled = True
return mock
def test_add_stage_initializes_when_pipeline_initialized(self):
"""add_stage() initializes stage when pipeline already initialized."""
pipeline = Pipeline()
mock_stage = self._create_mock_stage("test")
pipeline.build()
pipeline._initialized = True
pipeline.add_stage("test", mock_stage, initialize=True)
mock_stage.init.assert_called_once()
def test_add_stage_skips_initialize_when_pipeline_not_initialized(self):
"""add_stage() skips initialization when pipeline not built."""
pipeline = Pipeline()
mock_stage = self._create_mock_stage("test")
pipeline.add_stage("test", mock_stage, initialize=False)
mock_stage.init.assert_not_called()
def test_remove_stage_returns_removed_stage(self):
"""remove_stage() returns the removed stage."""
pipeline = Pipeline()
mock_stage = self._create_mock_stage("test")
pipeline.add_stage("test", mock_stage, initialize=False)
removed = pipeline.remove_stage("test", cleanup=False)
assert removed is mock_stage
assert "test" not in pipeline.stages
def test_remove_stage_calls_cleanup_when_requested(self):
"""remove_stage() calls cleanup when cleanup=True."""
pipeline = Pipeline()
mock_stage = self._create_mock_stage("test")
pipeline.add_stage("test", mock_stage, initialize=False)
pipeline.remove_stage("test", cleanup=True)
mock_stage.cleanup.assert_called_once()
def test_remove_stage_skips_cleanup_when_requested(self):
"""remove_stage() skips cleanup when cleanup=False."""
pipeline = Pipeline()
mock_stage = self._create_mock_stage("test")
pipeline.add_stage("test", mock_stage, initialize=False)
pipeline.remove_stage("test", cleanup=False)
mock_stage.cleanup.assert_not_called()
def test_remove_nonexistent_stage_returns_none(self):
"""remove_stage() returns None for nonexistent stage."""
pipeline = Pipeline()
result = pipeline.remove_stage("nonexistent", cleanup=False)
assert result is None
def test_replace_stage_preserves_state(self):
"""replace_stage() copies _enabled from old to new stage."""
pipeline = Pipeline()
old_stage = self._create_mock_stage("test")
old_stage._enabled = False
new_stage = self._create_mock_stage("test")
pipeline.add_stage("test", old_stage, initialize=False)
pipeline.replace_stage("test", new_stage, preserve_state=True)
assert new_stage._enabled is False
old_stage.cleanup.assert_called_once()
new_stage.init.assert_called_once()
def test_replace_stage_without_preserving_state(self):
"""replace_stage() without preserve_state doesn't copy state."""
pipeline = Pipeline()
old_stage = self._create_mock_stage("test")
old_stage._enabled = False
new_stage = self._create_mock_stage("test")
new_stage._enabled = True
pipeline.add_stage("test", old_stage, initialize=False)
pipeline.replace_stage("test", new_stage, preserve_state=False)
assert new_stage._enabled is True
def test_replace_nonexistent_stage_returns_none(self):
"""replace_stage() returns None for nonexistent stage."""
pipeline = Pipeline()
mock_stage = self._create_mock_stage("test")
result = pipeline.replace_stage("nonexistent", mock_stage)
assert result is None
def test_swap_stages_swaps_stages(self):
"""swap_stages() swaps two stages."""
pipeline = Pipeline()
stage_a = self._create_mock_stage("stage_a", "a")
stage_b = self._create_mock_stage("stage_b", "b")
pipeline.add_stage("a", stage_a, initialize=False)
pipeline.add_stage("b", stage_b, initialize=False)
result = pipeline.swap_stages("a", "b")
assert result is True
assert pipeline.stages["a"].name == "stage_b"
assert pipeline.stages["b"].name == "stage_a"
def test_swap_stages_fails_for_nonexistent(self):
"""swap_stages() fails if either stage doesn't exist."""
pipeline = Pipeline()
stage = self._create_mock_stage("test")
pipeline.add_stage("test", stage, initialize=False)
result = pipeline.swap_stages("test", "nonexistent")
assert result is False
def test_move_stage_after(self):
"""move_stage() moves stage after another."""
pipeline = Pipeline()
stage_a = self._create_mock_stage("a")
stage_b = self._create_mock_stage("b")
stage_c = self._create_mock_stage("c")
pipeline.add_stage("a", stage_a, initialize=False)
pipeline.add_stage("b", stage_b, initialize=False)
pipeline.add_stage("c", stage_c, initialize=False)
pipeline.build()
result = pipeline.move_stage("a", after="c")
assert result is True
idx_a = pipeline.execution_order.index("a")
idx_c = pipeline.execution_order.index("c")
assert idx_a > idx_c
def test_move_stage_before(self):
"""move_stage() moves stage before another."""
pipeline = Pipeline()
stage_a = self._create_mock_stage("a")
stage_b = self._create_mock_stage("b")
stage_c = self._create_mock_stage("c")
pipeline.add_stage("a", stage_a, initialize=False)
pipeline.add_stage("b", stage_b, initialize=False)
pipeline.add_stage("c", stage_c, initialize=False)
pipeline.build()
result = pipeline.move_stage("c", before="a")
assert result is True
idx_a = pipeline.execution_order.index("a")
idx_c = pipeline.execution_order.index("c")
assert idx_c < idx_a
def test_move_stage_fails_for_nonexistent(self):
"""move_stage() fails if stage doesn't exist."""
pipeline = Pipeline()
stage = self._create_mock_stage("test")
pipeline.add_stage("test", stage, initialize=False)
pipeline.build()
result = pipeline.move_stage("nonexistent", after="test")
assert result is False
def test_move_stage_fails_when_not_initialized(self):
"""move_stage() fails if pipeline not built."""
pipeline = Pipeline()
stage = self._create_mock_stage("test")
pipeline.add_stage("test", stage, initialize=False)
result = pipeline.move_stage("test", after="other")
assert result is False
def test_enable_stage(self):
"""enable_stage() enables a stage."""
pipeline = Pipeline()
stage = self._create_mock_stage("test")
pipeline.add_stage("test", stage, initialize=False)
result = pipeline.enable_stage("test")
assert result is True
stage.set_enabled.assert_called_with(True)
def test_enable_nonexistent_stage_returns_false(self):
"""enable_stage() returns False for nonexistent stage."""
pipeline = Pipeline()
result = pipeline.enable_stage("nonexistent")
assert result is False
def test_disable_stage(self):
"""disable_stage() disables a stage."""
pipeline = Pipeline()
stage = self._create_mock_stage("test")
pipeline.add_stage("test", stage, initialize=False)
result = pipeline.disable_stage("test")
assert result is True
stage.set_enabled.assert_called_with(False)
def test_disable_nonexistent_stage_returns_false(self):
"""disable_stage() returns False for nonexistent stage."""
pipeline = Pipeline()
result = pipeline.disable_stage("nonexistent")
assert result is False
def test_get_stage_info_returns_correct_info(self):
"""get_stage_info() returns correct stage information."""
pipeline = Pipeline()
stage = self._create_mock_stage(
"test_stage",
"effect",
capabilities={"effect.test"},
dependencies={"source"},
)
stage.render_order = 5
stage.is_overlay = False
stage.optional = True
pipeline.add_stage("test", stage, initialize=False)
info = pipeline.get_stage_info("test")
assert info is not None
assert info["name"] == "test" # Dict key, not stage.name
assert info["category"] == "effect"
assert info["stage_type"] == "effect"
assert info["enabled"] is True
assert info["optional"] is True
assert info["capabilities"] == ["effect.test"]
assert info["dependencies"] == ["source"]
assert info["render_order"] == 5
assert info["is_overlay"] is False
def test_get_stage_info_returns_none_for_nonexistent(self):
"""get_stage_info() returns None for nonexistent stage."""
pipeline = Pipeline()
info = pipeline.get_stage_info("nonexistent")
assert info is None
def test_get_pipeline_info_returns_complete_info(self):
"""get_pipeline_info() returns complete pipeline state."""
pipeline = Pipeline()
stage1 = self._create_mock_stage("stage1")
stage2 = self._create_mock_stage("stage2")
pipeline.add_stage("s1", stage1, initialize=False)
pipeline.add_stage("s2", stage2, initialize=False)
pipeline.build()
info = pipeline.get_pipeline_info()
assert "stages" in info
assert "execution_order" in info
assert info["initialized"] is True
assert info["stage_count"] == 2
assert "s1" in info["stages"]
assert "s2" in info["stages"]
def test_rebuild_after_mutation(self):
"""_rebuild() updates execution order after mutation."""
pipeline = Pipeline()
source = self._create_mock_stage(
"source", "source", capabilities={"source"}, dependencies=set()
)
effect = self._create_mock_stage(
"effect", "effect", capabilities={"effect"}, dependencies={"source"}
)
display = self._create_mock_stage(
"display", "display", capabilities={"display"}, dependencies={"effect"}
)
pipeline.add_stage("source", source, initialize=False)
pipeline.add_stage("effect", effect, initialize=False)
pipeline.add_stage("display", display, initialize=False)
pipeline.build()
assert pipeline.execution_order == ["source", "effect", "display"]
pipeline.remove_stage("effect", cleanup=False)
pipeline._rebuild()
assert "effect" not in pipeline.execution_order
assert "source" in pipeline.execution_order
assert "display" in pipeline.execution_order
def test_add_stage_after_build(self):
"""add_stage() can add stage after build with initialization."""
pipeline = Pipeline()
source = self._create_mock_stage(
"source", "source", capabilities={"source"}, dependencies=set()
)
display = self._create_mock_stage(
"display", "display", capabilities={"display"}, dependencies={"source"}
)
pipeline.add_stage("source", source, initialize=False)
pipeline.add_stage("display", display, initialize=False)
pipeline.build()
new_stage = self._create_mock_stage(
"effect", "effect", capabilities={"effect"}, dependencies={"source"}
)
pipeline.add_stage("effect", new_stage, initialize=True)
assert "effect" in pipeline.stages
new_stage.init.assert_called_once()
def test_mutation_preserves_execution_for_remaining_stages(self):
"""Removing a stage doesn't break execution of remaining stages."""
from engine.pipeline.core import DataType
call_log = []
class TestSource(Stage):
name = "source"
category = "source"
@property
def inlet_types(self):
return {DataType.NONE}
@property
def outlet_types(self):
return {DataType.SOURCE_ITEMS}
@property
def capabilities(self):
return {"source"}
@property
def dependencies(self):
return set()
def process(self, data, ctx):
call_log.append("source")
return ["item"]
class TestEffect(Stage):
name = "effect"
category = "effect"
@property
def inlet_types(self):
return {DataType.SOURCE_ITEMS}
@property
def outlet_types(self):
return {DataType.TEXT_BUFFER}
@property
def capabilities(self):
return {"effect"}
@property
def dependencies(self):
return {"source"}
def process(self, data, ctx):
call_log.append("effect")
return data
class TestDisplay(Stage):
name = "display"
category = "display"
@property
def inlet_types(self):
return {DataType.TEXT_BUFFER}
@property
def outlet_types(self):
return {DataType.NONE}
@property
def capabilities(self):
return {"display"}
@property
def dependencies(self):
return {"effect"}
def process(self, data, ctx):
call_log.append("display")
return data
pipeline = Pipeline()
pipeline.add_stage("source", TestSource(), initialize=False)
pipeline.add_stage("effect", TestEffect(), initialize=False)
pipeline.add_stage("display", TestDisplay(), initialize=False)
pipeline.build()
pipeline.initialize()
result = pipeline.execute(None)
assert result.success
assert call_log == ["source", "effect", "display"]
call_log.clear()
pipeline.remove_stage("effect", cleanup=True)
pipeline._rebuild()
result = pipeline.execute(None)
assert result.success
assert call_log == ["source", "display"]

224
tests/test_streaming.py Normal file
View File

@@ -0,0 +1,224 @@
"""
Tests for streaming protocol utilities.
"""
from engine.display.streaming import (
FrameDiff,
MessageType,
apply_diff,
compress_frame,
compute_diff,
decode_binary_message,
decode_diff_message,
decode_rle,
decompress_frame,
encode_binary_message,
encode_diff_message,
encode_rle,
should_use_diff,
)
class TestFrameDiff:
"""Tests for FrameDiff computation."""
def test_compute_diff_all_changed(self):
"""compute_diff detects all changed lines."""
old = ["a", "b", "c"]
new = ["x", "y", "z"]
diff = compute_diff(old, new)
assert len(diff.changed_lines) == 3
assert diff.width == 1
assert diff.height == 3
def test_compute_diff_no_changes(self):
"""compute_diff returns empty for identical buffers."""
old = ["a", "b", "c"]
new = ["a", "b", "c"]
diff = compute_diff(old, new)
assert len(diff.changed_lines) == 0
def test_compute_diff_partial_changes(self):
"""compute_diff detects partial changes."""
old = ["a", "b", "c"]
new = ["a", "x", "c"]
diff = compute_diff(old, new)
assert len(diff.changed_lines) == 1
assert diff.changed_lines[0] == (1, "x")
def test_compute_diff_new_lines(self):
"""compute_diff detects new lines added."""
old = ["a", "b"]
new = ["a", "b", "c"]
diff = compute_diff(old, new)
assert len(diff.changed_lines) == 1
assert diff.changed_lines[0] == (2, "c")
def test_compute_diff_empty_old(self):
"""compute_diff handles empty old buffer."""
old = []
new = ["a", "b", "c"]
diff = compute_diff(old, new)
assert len(diff.changed_lines) == 3
class TestRLE:
"""Tests for run-length encoding."""
def test_encode_rle_no_repeats(self):
"""encode_rle handles no repeated lines."""
lines = [(0, "a"), (1, "b"), (2, "c")]
encoded = encode_rle(lines)
assert len(encoded) == 3
assert encoded[0] == (0, "a", 1)
assert encoded[1] == (1, "b", 1)
assert encoded[2] == (2, "c", 1)
def test_encode_rle_with_repeats(self):
"""encode_rle compresses repeated lines."""
lines = [(0, "a"), (1, "a"), (2, "a"), (3, "b")]
encoded = encode_rle(lines)
assert len(encoded) == 2
assert encoded[0] == (0, "a", 3)
assert encoded[1] == (3, "b", 1)
def test_decode_rle(self):
"""decode_rle reconstructs original lines."""
encoded = [(0, "a", 3), (3, "b", 1)]
decoded = decode_rle(encoded)
assert decoded == [(0, "a"), (1, "a"), (2, "a"), (3, "b")]
def test_encode_decode_roundtrip(self):
"""encode/decode is lossless."""
original = [(i, f"line{i % 3}") for i in range(10)]
encoded = encode_rle(original)
decoded = decode_rle(encoded)
assert decoded == original
class TestCompression:
"""Tests for frame compression."""
def test_compress_decompress(self):
"""compress_frame is lossless."""
buffer = [f"Line {i:02d}" for i in range(24)]
compressed = compress_frame(buffer)
decompressed = decompress_frame(compressed, 24)
assert decompressed == buffer
def test_compress_empty(self):
"""compress_frame handles empty buffer."""
compressed = compress_frame([])
decompressed = decompress_frame(compressed, 0)
assert decompressed == []
class TestBinaryProtocol:
"""Tests for binary message encoding."""
def test_encode_decode_message(self):
"""encode_binary_message is lossless."""
payload = b"test payload"
encoded = encode_binary_message(MessageType.FULL_FRAME, 80, 24, payload)
msg_type, width, height, decoded_payload = decode_binary_message(encoded)
assert msg_type == MessageType.FULL_FRAME
assert width == 80
assert height == 24
assert decoded_payload == payload
def test_encode_decode_all_types(self):
"""All message types encode correctly."""
for msg_type in MessageType:
payload = b"test"
encoded = encode_binary_message(msg_type, 80, 24, payload)
decoded_type, _, _, _ = decode_binary_message(encoded)
assert decoded_type == msg_type
class TestDiffProtocol:
"""Tests for diff message encoding."""
def test_encode_decode_diff(self):
"""encode_diff_message is lossless."""
diff = FrameDiff(width=80, height=24, changed_lines=[(0, "a"), (5, "b")])
payload = encode_diff_message(diff)
decoded = decode_diff_message(payload)
assert decoded == diff.changed_lines
class TestApplyDiff:
"""Tests for applying diffs."""
def test_apply_diff(self):
"""apply_diff reconstructs new buffer."""
old_buffer = ["a", "b", "c", "d"]
diff = FrameDiff(width=1, height=4, changed_lines=[(1, "x"), (2, "y")])
new_buffer = apply_diff(old_buffer, diff)
assert new_buffer == ["a", "x", "y", "d"]
def test_apply_diff_new_lines(self):
"""apply_diff handles new lines."""
old_buffer = ["a", "b"]
diff = FrameDiff(width=1, height=4, changed_lines=[(2, "c"), (3, "d")])
new_buffer = apply_diff(old_buffer, diff)
assert new_buffer == ["a", "b", "c", "d"]
class TestShouldUseDiff:
"""Tests for diff threshold decision."""
def test_uses_diff_when_small_changes(self):
"""should_use_diff returns True when few changes."""
old = ["a"] * 100
new = ["a"] * 95 + ["b"] * 5
assert should_use_diff(old, new, threshold=0.3) is True
def test_uses_full_when_many_changes(self):
"""should_use_diff returns False when many changes."""
old = ["a"] * 100
new = ["b"] * 100
assert should_use_diff(old, new, threshold=0.3) is False
def test_uses_diff_at_threshold(self):
"""should_use_diff handles threshold boundary."""
old = ["a"] * 100
new = ["a"] * 70 + ["b"] * 30
result = should_use_diff(old, new, threshold=0.3)
assert result is True or result is False # At boundary
def test_returns_false_for_empty(self):
"""should_use_diff returns False for empty buffers."""
assert should_use_diff([], ["a", "b"]) is False
assert should_use_diff(["a", "b"], []) is False

7
tests/test_viewport_filter_performance.py
View File

@@ -110,10 +110,9 @@ class TestViewportFilterStage:
filtered = stage.process(test_items, ctx)
improvement_factor = len(test_items) / len(filtered)
# Verify we get at least 400x improvement (better than old ~288x)
assert improvement_factor > 400
# Verify we get the expected ~479x improvement
assert 400 < improvement_factor < 600
# Verify we get significant improvement (360x with 4 items vs 1438)
assert improvement_factor > 300
assert 300 < improvement_factor < 500
class TestViewportFilterIntegration:

233
tests/test_websocket.py
View File

@@ -160,3 +160,236 @@ class TestWebSocketDisplayUnavailable:
"""show does nothing when websockets unavailable."""
display = WebSocketDisplay()
display.show(["line1", "line2"])
class TestWebSocketUIPanelIntegration:
"""Tests for WebSocket-UIPanel integration for remote control."""
def test_set_controller_stores_controller(self):
"""set_controller stores the controller reference."""
with patch("engine.display.backends.websocket.websockets", MagicMock()):
display = WebSocketDisplay()
mock_controller = MagicMock()
display.set_controller(mock_controller)
assert display._controller is mock_controller
def test_set_command_callback_stores_callback(self):
"""set_command_callback stores the callback."""
with patch("engine.display.backends.websocket.websockets", MagicMock()):
display = WebSocketDisplay()
callback = MagicMock()
display.set_command_callback(callback)
assert display._command_callback is callback
def test_get_state_snapshot_returns_none_without_controller(self):
"""_get_state_snapshot returns None when no controller is set."""
with patch("engine.display.backends.websocket.websockets", MagicMock()):
display = WebSocketDisplay()
assert display._get_state_snapshot() is None
def test_get_state_snapshot_returns_controller_state(self):
"""_get_state_snapshot returns state from controller."""
with patch("engine.display.backends.websocket.websockets", MagicMock()):
display = WebSocketDisplay()
# Create mock controller with expected attributes
mock_controller = MagicMock()
mock_controller.stages = {
"test_stage": MagicMock(
enabled=True, params={"intensity": 0.5}, selected=False
)
}
mock_controller._current_preset = "demo"
mock_controller._presets = ["demo", "test"]
mock_controller.selected_stage = "test_stage"
display.set_controller(mock_controller)
state = display._get_state_snapshot()
assert state is not None
assert "stages" in state
assert "test_stage" in state["stages"]
assert state["stages"]["test_stage"]["enabled"] is True
assert state["stages"]["test_stage"]["params"] == {"intensity": 0.5}
assert state["preset"] == "demo"
assert state["presets"] == ["demo", "test"]
assert state["selected_stage"] == "test_stage"
def test_get_state_snapshot_handles_missing_attributes(self):
"""_get_state_snapshot handles controller without all attributes."""
with patch("engine.display.backends.websocket.websockets", MagicMock()):
display = WebSocketDisplay()
# Create mock controller without stages attribute using spec
# This prevents MagicMock from auto-creating the attribute
mock_controller = MagicMock(spec=[]) # Empty spec means no attributes
display.set_controller(mock_controller)
state = display._get_state_snapshot()
assert state == {}
def test_broadcast_state_sends_to_clients(self):
"""broadcast_state sends state update to all connected clients."""
with patch("engine.display.backends.websocket.websockets", MagicMock()):
display = WebSocketDisplay()
# Mock client with send method
mock_client = MagicMock()
mock_client.send = MagicMock()
display._clients.add(mock_client)
test_state = {"test": "state"}
display.broadcast_state(test_state)
# Verify send was called with JSON containing state
mock_client.send.assert_called_once()
call_args = mock_client.send.call_args[0][0]
assert '"type": "state"' in call_args
assert '"test"' in call_args
def test_broadcast_state_noop_when_no_clients(self):
"""broadcast_state does nothing when no clients connected."""
with patch("engine.display.backends.websocket.websockets", MagicMock()):
display = WebSocketDisplay()
display._clients.clear()
# Should not raise error
display.broadcast_state({"test": "state"})
class TestWebSocketHTTPServerPath:
"""Tests for WebSocket HTTP server client directory path calculation."""
def test_client_dir_path_calculation(self):
"""Client directory path is correctly calculated from websocket.py location."""
import os
# Use the actual websocket.py file location, not the test file
websocket_module = __import__(
"engine.display.backends.websocket", fromlist=["WebSocketDisplay"]
)
websocket_file = websocket_module.__file__
parts = websocket_file.split(os.sep)
if "engine" in parts:
engine_idx = parts.index("engine")
project_root = os.sep.join(parts[:engine_idx])
client_dir = os.path.join(project_root, "client")
else:
# Fallback calculation (shouldn't happen in normal test runs)
client_dir = os.path.join(
os.path.dirname(
os.path.dirname(os.path.dirname(os.path.dirname(websocket_file)))
),
"client",
)
# Verify the client directory exists and contains expected files
assert os.path.exists(client_dir), f"Client directory not found: {client_dir}"
assert "index.html" in os.listdir(client_dir), (
"index.html not found in client directory"
)
assert "editor.html" in os.listdir(client_dir), (
"editor.html not found in client directory"
)
# Verify the path is correct (should be .../Mainline/client)
assert client_dir.endswith("client"), (
f"Client dir should end with 'client': {client_dir}"
)
assert "Mainline" in client_dir, (
f"Client dir should contain 'Mainline': {client_dir}"
)
def test_http_server_directory_serves_client_files(self):
"""HTTP server directory correctly serves client files."""
import os
# Use the actual websocket.py file location, not the test file
websocket_module = __import__(
"engine.display.backends.websocket", fromlist=["WebSocketDisplay"]
)
websocket_file = websocket_module.__file__
parts = websocket_file.split(os.sep)
if "engine" in parts:
engine_idx = parts.index("engine")
project_root = os.sep.join(parts[:engine_idx])
client_dir = os.path.join(project_root, "client")
else:
client_dir = os.path.join(
os.path.dirname(
os.path.dirname(os.path.dirname(os.path.dirname(websocket_file)))
),
"client",
)
# Verify the handler would be able to serve files from this directory
# We can't actually instantiate the handler without a valid request,
# but we can verify the directory is accessible
assert os.access(client_dir, os.R_OK), (
f"Client directory not readable: {client_dir}"
)
# Verify key files exist
index_path = os.path.join(client_dir, "index.html")
editor_path = os.path.join(client_dir, "editor.html")
assert os.path.exists(index_path), f"index.html not found at: {index_path}"
assert os.path.exists(editor_path), f"editor.html not found at: {editor_path}"
# Verify files are readable
assert os.access(index_path, os.R_OK), "index.html not readable"
assert os.access(editor_path, os.R_OK), "editor.html not readable"
def test_old_buggy_path_does_not_find_client_directory(self):
"""The old buggy path (3 dirname calls) should NOT find the client directory.
This test verifies that the old buggy behavior would have failed.
The old code used:
client_dir = os.path.join(
os.path.dirname(os.path.dirname(os.path.dirname(__file__))), "client"
)
This would resolve to: .../engine/client (which doesn't exist)
Instead of: .../Mainline/client (which does exist)
"""
import os
# Use the actual websocket.py file location
websocket_module = __import__(
"engine.display.backends.websocket", fromlist=["WebSocketDisplay"]
)
websocket_file = websocket_module.__file__
# OLD BUGGY CODE: 3 dirname calls
old_buggy_client_dir = os.path.join(
os.path.dirname(os.path.dirname(os.path.dirname(websocket_file))), "client"
)
# This path should NOT exist (it's the buggy path)
assert not os.path.exists(old_buggy_client_dir), (
f"Old buggy path should not exist: {old_buggy_client_dir}\n"
f"If this assertion fails, the bug may have been fixed elsewhere or "
f"the test needs updating."
)
# The buggy path should be .../engine/client, not .../Mainline/client
assert old_buggy_client_dir.endswith("engine/client"), (
f"Old buggy path should end with 'engine/client': {old_buggy_client_dir}"
)
# Verify that going up one more level (4 dirname calls) finds the correct path
correct_client_dir = os.path.join(
os.path.dirname(
os.path.dirname(os.path.dirname(os.path.dirname(websocket_file)))
),
"client",
)
assert os.path.exists(correct_client_dir), (
f"Correct path should exist: {correct_client_dir}"
)
assert "index.html" in os.listdir(correct_client_dir), (
f"index.html should exist in correct path: {correct_client_dir}"
)