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Merges full history from art-dag/mono.git into the monorepo under the artdag/ directory. Contains: core (DAG engine), l1 (Celery rendering server), l2 (ActivityPub registry), common (shared templates/middleware), client (CLI), test (e2e). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> git-subtree-dir: artdag git-subtree-mainline:1a179de547git-subtree-split:4c2e716558
860 lines
31 KiB
Python
860 lines
31 KiB
Python
"""
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Fully Generic Streaming S-expression Interpreter.
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The interpreter knows NOTHING about video, audio, or any domain.
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All domain logic comes from primitives loaded via (require-primitives ...).
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Built-in forms:
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- Control: if, cond, let, let*, lambda, ->
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- Arithmetic: +, -, *, /, mod, map-range
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- Comparison: <, >, =, <=, >=, and, or, not
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- Data: dict, get, list, nth, len, quote
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- Random: rand, rand-int, rand-range
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- Scan: bind (access scan state)
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Everything else comes from primitives or effects.
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Context (ctx) is passed explicitly to frame evaluation:
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- ctx.t: current time
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- ctx.frame-num: current frame number
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- ctx.fps: frames per second
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"""
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import sys
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import time
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import json
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import hashlib
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import math
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import numpy as np
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from pathlib import Path
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from dataclasses import dataclass
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from typing import Dict, List, Any, Optional, Tuple
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sys.path.insert(0, str(Path(__file__).parent.parent.parent / "artdag"))
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from artdag.sexp.parser import parse, parse_all, Symbol, Keyword
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@dataclass
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class Context:
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"""Runtime context passed to frame evaluation."""
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t: float = 0.0
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frame_num: int = 0
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fps: float = 30.0
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class StreamInterpreter:
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"""
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Fully generic streaming sexp interpreter.
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No domain-specific knowledge - just evaluates expressions
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and calls primitives.
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"""
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def __init__(self, sexp_path: str):
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self.sexp_path = Path(sexp_path)
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self.sexp_dir = self.sexp_path.parent
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text = self.sexp_path.read_text()
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self.ast = parse(text)
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self.config = self._parse_config()
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# Global environment for def bindings
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self.globals: Dict[str, Any] = {}
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# Scans
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self.scans: Dict[str, dict] = {}
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# Audio playback path (for syncing output)
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self.audio_playback: Optional[str] = None
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# Registries for external definitions
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self.primitives: Dict[str, Any] = {}
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self.effects: Dict[str, dict] = {}
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self.macros: Dict[str, dict] = {}
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self.primitive_lib_dir = self.sexp_dir.parent / "sexp_effects" / "primitive_libs"
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self.frame_pipeline = None
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# External config files (set before run())
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self.sources_config: Optional[Path] = None
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self.audio_config: Optional[Path] = None
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import random
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self.rng = random.Random(self.config.get('seed', 42))
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def _load_config_file(self, config_path):
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"""Load a config file and process its definitions."""
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config_path = Path(config_path) # Accept str or Path
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if not config_path.exists():
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print(f"Warning: config file not found: {config_path}", file=sys.stderr)
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return
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text = config_path.read_text()
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ast = parse_all(text)
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for form in ast:
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if not isinstance(form, list) or not form:
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continue
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if not isinstance(form[0], Symbol):
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continue
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cmd = form[0].name
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if cmd == 'require-primitives':
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lib_name = form[1] if isinstance(form[1], str) else str(form[1]).strip('"')
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self._load_primitives(lib_name)
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elif cmd == 'def':
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name = form[1].name if isinstance(form[1], Symbol) else str(form[1])
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value = self._eval(form[2], self.globals)
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self.globals[name] = value
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print(f"Config: {name}", file=sys.stderr)
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elif cmd == 'audio-playback':
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# Path relative to working directory (consistent with other paths)
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path = str(form[1]).strip('"')
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self.audio_playback = str(Path(path).resolve())
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print(f"Audio playback: {self.audio_playback}", file=sys.stderr)
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def _parse_config(self) -> dict:
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"""Parse config from (stream name :key val ...)."""
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config = {'fps': 30, 'seed': 42, 'width': 720, 'height': 720}
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if not self.ast or not isinstance(self.ast[0], Symbol):
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return config
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if self.ast[0].name != 'stream':
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return config
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i = 2
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while i < len(self.ast):
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if isinstance(self.ast[i], Keyword):
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config[self.ast[i].name] = self.ast[i + 1] if i + 1 < len(self.ast) else None
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i += 2
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elif isinstance(self.ast[i], list):
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break
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else:
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i += 1
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return config
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def _load_primitives(self, lib_name: str):
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"""Load primitives from a Python library file."""
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import importlib.util
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lib_paths = [
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self.primitive_lib_dir / f"{lib_name}.py",
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self.sexp_dir / "primitive_libs" / f"{lib_name}.py",
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self.sexp_dir.parent / "sexp_effects" / "primitive_libs" / f"{lib_name}.py",
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]
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lib_path = None
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for p in lib_paths:
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if p.exists():
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lib_path = p
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break
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if not lib_path:
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print(f"Warning: primitive library '{lib_name}' not found", file=sys.stderr)
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return
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spec = importlib.util.spec_from_file_location(lib_name, lib_path)
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module = importlib.util.module_from_spec(spec)
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spec.loader.exec_module(module)
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count = 0
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for name in dir(module):
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if name.startswith('prim_'):
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func = getattr(module, name)
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prim_name = name[5:]
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dash_name = prim_name.replace('_', '-')
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# Register ONLY with namespace (geometry:ripple-displace)
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self.primitives[f"{lib_name}:{dash_name}"] = func
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count += 1
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if hasattr(module, 'PRIMITIVES'):
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prims = getattr(module, 'PRIMITIVES')
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if isinstance(prims, dict):
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for name, func in prims.items():
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# Register ONLY with namespace
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dash_name = name.replace('_', '-')
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self.primitives[f"{lib_name}:{dash_name}"] = func
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count += 1
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print(f"Loaded primitives: {lib_name} ({count} functions)", file=sys.stderr)
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def _load_effect(self, effect_path: Path):
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"""Load and register an effect from a .sexp file."""
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if not effect_path.exists():
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print(f"Warning: effect file not found: {effect_path}", file=sys.stderr)
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return
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text = effect_path.read_text()
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ast = parse_all(text)
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for form in ast:
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if not isinstance(form, list) or not form:
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continue
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if not isinstance(form[0], Symbol):
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continue
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cmd = form[0].name
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if cmd == 'require-primitives':
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lib_name = form[1] if isinstance(form[1], str) else str(form[1]).strip('"')
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self._load_primitives(lib_name)
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elif cmd == 'define-effect':
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name = form[1].name if isinstance(form[1], Symbol) else str(form[1])
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params = {}
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body = None
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i = 2
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while i < len(form):
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if isinstance(form[i], Keyword):
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if form[i].name == 'params' and i + 1 < len(form):
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for pdef in form[i + 1]:
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if isinstance(pdef, list) and pdef:
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pname = pdef[0].name if isinstance(pdef[0], Symbol) else str(pdef[0])
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pinfo = {'default': 0}
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j = 1
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while j < len(pdef):
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if isinstance(pdef[j], Keyword) and j + 1 < len(pdef):
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pinfo[pdef[j].name] = pdef[j + 1]
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j += 2
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else:
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j += 1
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params[pname] = pinfo
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i += 2
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else:
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body = form[i]
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i += 1
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self.effects[name] = {'params': params, 'body': body}
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print(f"Effect: {name}", file=sys.stderr)
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elif cmd == 'defmacro':
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name = form[1].name if isinstance(form[1], Symbol) else str(form[1])
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params = [p.name if isinstance(p, Symbol) else str(p) for p in form[2]]
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body = form[3]
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self.macros[name] = {'params': params, 'body': body}
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elif cmd == 'effect':
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# Handle (effect name :path "...") in included files - recursive
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i = 2
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while i < len(form):
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if isinstance(form[i], Keyword) and form[i].name == 'path':
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path = str(form[i + 1]).strip('"')
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# Resolve relative to the file being loaded
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full = (effect_path.parent / path).resolve()
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self._load_effect(full)
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i += 2
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else:
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i += 1
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elif cmd == 'include':
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# Handle (include :path "...") in included files - recursive
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i = 1
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while i < len(form):
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if isinstance(form[i], Keyword) and form[i].name == 'path':
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path = str(form[i + 1]).strip('"')
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full = (effect_path.parent / path).resolve()
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self._load_effect(full)
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i += 2
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else:
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i += 1
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elif cmd == 'scan':
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# Handle scans from included files
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name = form[1].name if isinstance(form[1], Symbol) else str(form[1])
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trigger_expr = form[2]
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init_val, step_expr = {}, None
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i = 3
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while i < len(form):
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if isinstance(form[i], Keyword):
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if form[i].name == 'init' and i + 1 < len(form):
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init_val = self._eval(form[i + 1], self.globals)
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elif form[i].name == 'step' and i + 1 < len(form):
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step_expr = form[i + 1]
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i += 2
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else:
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i += 1
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self.scans[name] = {
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'state': dict(init_val) if isinstance(init_val, dict) else {'acc': init_val},
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'init': init_val,
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'step': step_expr,
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'trigger': trigger_expr,
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}
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print(f"Scan: {name}", file=sys.stderr)
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def _init(self):
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"""Initialize from sexp - load primitives, effects, defs, scans."""
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# Load external config files first (they can override recipe definitions)
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if self.sources_config:
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self._load_config_file(self.sources_config)
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if self.audio_config:
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self._load_config_file(self.audio_config)
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for form in self.ast:
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if not isinstance(form, list) or not form:
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continue
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if not isinstance(form[0], Symbol):
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continue
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cmd = form[0].name
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if cmd == 'require-primitives':
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lib_name = form[1] if isinstance(form[1], str) else str(form[1]).strip('"')
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self._load_primitives(lib_name)
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elif cmd == 'effect':
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name = form[1].name if isinstance(form[1], Symbol) else str(form[1])
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i = 2
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while i < len(form):
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if isinstance(form[i], Keyword) and form[i].name == 'path':
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path = str(form[i + 1]).strip('"')
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full = (self.sexp_dir / path).resolve()
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self._load_effect(full)
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i += 2
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else:
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i += 1
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elif cmd == 'include':
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i = 1
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while i < len(form):
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if isinstance(form[i], Keyword) and form[i].name == 'path':
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path = str(form[i + 1]).strip('"')
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full = (self.sexp_dir / path).resolve()
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self._load_effect(full)
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i += 2
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else:
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i += 1
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elif cmd == 'audio-playback':
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# (audio-playback "path") - set audio file for playback sync
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# Skip if already set by config file
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if self.audio_playback is None:
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path = str(form[1]).strip('"')
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self.audio_playback = str((self.sexp_dir / path).resolve())
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print(f"Audio playback: {self.audio_playback}", file=sys.stderr)
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elif cmd == 'def':
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# (def name expr) - evaluate and store in globals
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# Skip if already defined by config file
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name = form[1].name if isinstance(form[1], Symbol) else str(form[1])
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if name in self.globals:
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print(f"Def: {name} (from config, skipped)", file=sys.stderr)
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continue
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value = self._eval(form[2], self.globals)
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self.globals[name] = value
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print(f"Def: {name}", file=sys.stderr)
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elif cmd == 'defmacro':
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name = form[1].name if isinstance(form[1], Symbol) else str(form[1])
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params = [p.name if isinstance(p, Symbol) else str(p) for p in form[2]]
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body = form[3]
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self.macros[name] = {'params': params, 'body': body}
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elif cmd == 'scan':
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name = form[1].name if isinstance(form[1], Symbol) else str(form[1])
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trigger_expr = form[2]
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init_val, step_expr = {}, None
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i = 3
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while i < len(form):
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if isinstance(form[i], Keyword):
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if form[i].name == 'init' and i + 1 < len(form):
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init_val = self._eval(form[i + 1], self.globals)
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elif form[i].name == 'step' and i + 1 < len(form):
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step_expr = form[i + 1]
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i += 2
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else:
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i += 1
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self.scans[name] = {
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'state': dict(init_val) if isinstance(init_val, dict) else {'acc': init_val},
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'init': init_val,
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'step': step_expr,
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'trigger': trigger_expr,
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}
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print(f"Scan: {name}", file=sys.stderr)
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elif cmd == 'frame':
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self.frame_pipeline = form[1] if len(form) > 1 else None
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def _eval(self, expr, env: dict) -> Any:
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"""Evaluate an expression."""
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# Primitives
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if isinstance(expr, (int, float)):
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return expr
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if isinstance(expr, str):
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return expr
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if isinstance(expr, bool):
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return expr
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if isinstance(expr, Symbol):
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name = expr.name
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# Built-in constants
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if name == 'pi':
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return math.pi
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if name == 'true':
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return True
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if name == 'false':
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return False
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if name == 'nil':
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return None
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# Environment lookup
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if name in env:
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return env[name]
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# Global lookup
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if name in self.globals:
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return self.globals[name]
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# Scan state lookup
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if name in self.scans:
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return self.scans[name]['state']
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raise NameError(f"Undefined variable: {name}")
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if isinstance(expr, Keyword):
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return expr.name
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if not isinstance(expr, list) or not expr:
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return expr
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# Dict literal {:key val ...}
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if isinstance(expr[0], Keyword):
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result = {}
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i = 0
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while i < len(expr):
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if isinstance(expr[i], Keyword):
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result[expr[i].name] = self._eval(expr[i + 1], env) if i + 1 < len(expr) else None
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i += 2
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else:
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i += 1
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return result
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head = expr[0]
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if not isinstance(head, Symbol):
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return [self._eval(e, env) for e in expr]
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op = head.name
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args = expr[1:]
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# Check for closure call
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if op in env:
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val = env[op]
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if isinstance(val, dict) and val.get('_type') == 'closure':
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closure = val
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closure_env = dict(closure['env'])
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for i, pname in enumerate(closure['params']):
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closure_env[pname] = self._eval(args[i], env) if i < len(args) else None
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return self._eval(closure['body'], closure_env)
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if op in self.globals:
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val = self.globals[op]
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if isinstance(val, dict) and val.get('_type') == 'closure':
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closure = val
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closure_env = dict(closure['env'])
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for i, pname in enumerate(closure['params']):
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closure_env[pname] = self._eval(args[i], env) if i < len(args) else None
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return self._eval(closure['body'], closure_env)
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# Threading macro
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if op == '->':
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result = self._eval(args[0], env)
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for form in args[1:]:
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if isinstance(form, list) and form:
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new_form = [form[0], result] + form[1:]
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result = self._eval(new_form, env)
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else:
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result = self._eval([form, result], env)
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return result
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# === Binding ===
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if op == 'bind':
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scan_name = args[0].name if isinstance(args[0], Symbol) else str(args[0])
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if scan_name in self.scans:
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state = self.scans[scan_name]['state']
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if len(args) > 1:
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key = args[1].name if isinstance(args[1], Keyword) else str(args[1])
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return state.get(key, 0)
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return state
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return 0
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# === Arithmetic ===
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if op == '+':
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return sum(self._eval(a, env) for a in args)
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if op == '-':
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vals = [self._eval(a, env) for a in args]
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return vals[0] - sum(vals[1:]) if len(vals) > 1 else -vals[0]
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if op == '*':
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result = 1
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for a in args:
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result *= self._eval(a, env)
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return result
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if op == '/':
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vals = [self._eval(a, env) for a in args]
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return vals[0] / vals[1] if len(vals) > 1 and vals[1] != 0 else 0
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if op == 'mod':
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vals = [self._eval(a, env) for a in args]
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return vals[0] % vals[1] if len(vals) > 1 and vals[1] != 0 else 0
|
|
|
|
# === Comparison ===
|
|
|
|
if op == '<':
|
|
return self._eval(args[0], env) < self._eval(args[1], env)
|
|
if op == '>':
|
|
return self._eval(args[0], env) > self._eval(args[1], env)
|
|
if op == '=':
|
|
return self._eval(args[0], env) == self._eval(args[1], env)
|
|
if op == '<=':
|
|
return self._eval(args[0], env) <= self._eval(args[1], env)
|
|
if op == '>=':
|
|
return self._eval(args[0], env) >= self._eval(args[1], env)
|
|
|
|
if op == 'and':
|
|
for arg in args:
|
|
if not self._eval(arg, env):
|
|
return False
|
|
return True
|
|
|
|
if op == 'or':
|
|
result = False
|
|
for arg in args:
|
|
result = self._eval(arg, env)
|
|
if result:
|
|
return result
|
|
return result
|
|
|
|
if op == 'not':
|
|
return not self._eval(args[0], env)
|
|
|
|
# === Logic ===
|
|
|
|
if op == 'if':
|
|
cond = self._eval(args[0], env)
|
|
if cond:
|
|
return self._eval(args[1], env)
|
|
return self._eval(args[2], env) if len(args) > 2 else None
|
|
|
|
if op == 'cond':
|
|
i = 0
|
|
while i < len(args) - 1:
|
|
pred = self._eval(args[i], env)
|
|
if pred:
|
|
return self._eval(args[i + 1], env)
|
|
i += 2
|
|
return None
|
|
|
|
if op == 'lambda':
|
|
params = args[0]
|
|
body = args[1]
|
|
param_names = [p.name if isinstance(p, Symbol) else str(p) for p in params]
|
|
return {'_type': 'closure', 'params': param_names, 'body': body, 'env': dict(env)}
|
|
|
|
if op == 'let' or op == 'let*':
|
|
bindings = args[0]
|
|
body = args[1]
|
|
new_env = dict(env)
|
|
|
|
if bindings and isinstance(bindings[0], list):
|
|
for binding in bindings:
|
|
if isinstance(binding, list) and len(binding) >= 2:
|
|
name = binding[0].name if isinstance(binding[0], Symbol) else str(binding[0])
|
|
val = self._eval(binding[1], new_env)
|
|
new_env[name] = val
|
|
else:
|
|
i = 0
|
|
while i < len(bindings):
|
|
name = bindings[i].name if isinstance(bindings[i], Symbol) else str(bindings[i])
|
|
val = self._eval(bindings[i + 1], new_env)
|
|
new_env[name] = val
|
|
i += 2
|
|
return self._eval(body, new_env)
|
|
|
|
# === Dict ===
|
|
|
|
if op == 'dict':
|
|
result = {}
|
|
i = 0
|
|
while i < len(args):
|
|
if isinstance(args[i], Keyword):
|
|
key = args[i].name
|
|
val = self._eval(args[i + 1], env) if i + 1 < len(args) else None
|
|
result[key] = val
|
|
i += 2
|
|
else:
|
|
i += 1
|
|
return result
|
|
|
|
if op == 'get':
|
|
obj = self._eval(args[0], env)
|
|
key = args[1].name if isinstance(args[1], Keyword) else self._eval(args[1], env)
|
|
if isinstance(obj, dict):
|
|
return obj.get(key, 0)
|
|
return 0
|
|
|
|
# === List ===
|
|
|
|
if op == 'list':
|
|
return [self._eval(a, env) for a in args]
|
|
|
|
if op == 'quote':
|
|
return args[0] if args else None
|
|
|
|
if op == 'nth':
|
|
lst = self._eval(args[0], env)
|
|
idx = int(self._eval(args[1], env))
|
|
if isinstance(lst, (list, tuple)) and 0 <= idx < len(lst):
|
|
return lst[idx]
|
|
return None
|
|
|
|
if op == 'len':
|
|
val = self._eval(args[0], env)
|
|
return len(val) if hasattr(val, '__len__') else 0
|
|
|
|
if op == 'map':
|
|
seq = self._eval(args[0], env)
|
|
fn = self._eval(args[1], env)
|
|
if not isinstance(seq, (list, tuple)):
|
|
return []
|
|
# Handle closure (lambda from sexp)
|
|
if isinstance(fn, dict) and fn.get('_type') == 'closure':
|
|
results = []
|
|
for item in seq:
|
|
closure_env = dict(fn['env'])
|
|
if fn['params']:
|
|
closure_env[fn['params'][0]] = item
|
|
results.append(self._eval(fn['body'], closure_env))
|
|
return results
|
|
# Handle Python callable
|
|
if callable(fn):
|
|
return [fn(item) for item in seq]
|
|
return []
|
|
|
|
# === Effects ===
|
|
|
|
if op in self.effects:
|
|
effect = self.effects[op]
|
|
effect_env = dict(env)
|
|
|
|
param_names = list(effect['params'].keys())
|
|
for pname, pdef in effect['params'].items():
|
|
effect_env[pname] = pdef.get('default', 0)
|
|
|
|
positional_idx = 0
|
|
i = 0
|
|
while i < len(args):
|
|
if isinstance(args[i], Keyword):
|
|
pname = args[i].name
|
|
if pname in effect['params'] and i + 1 < len(args):
|
|
effect_env[pname] = self._eval(args[i + 1], env)
|
|
i += 2
|
|
else:
|
|
val = self._eval(args[i], env)
|
|
if positional_idx == 0:
|
|
effect_env['frame'] = val
|
|
elif positional_idx - 1 < len(param_names):
|
|
effect_env[param_names[positional_idx - 1]] = val
|
|
positional_idx += 1
|
|
i += 1
|
|
|
|
return self._eval(effect['body'], effect_env)
|
|
|
|
# === Primitives ===
|
|
|
|
if op in self.primitives:
|
|
prim_func = self.primitives[op]
|
|
evaluated_args = []
|
|
kwargs = {}
|
|
i = 0
|
|
while i < len(args):
|
|
if isinstance(args[i], Keyword):
|
|
k = args[i].name
|
|
v = self._eval(args[i + 1], env) if i + 1 < len(args) else None
|
|
kwargs[k] = v
|
|
i += 2
|
|
else:
|
|
evaluated_args.append(self._eval(args[i], env))
|
|
i += 1
|
|
try:
|
|
if kwargs:
|
|
return prim_func(*evaluated_args, **kwargs)
|
|
return prim_func(*evaluated_args)
|
|
except Exception as e:
|
|
print(f"Primitive {op} error: {e}", file=sys.stderr)
|
|
return None
|
|
|
|
# === Macros (function-like: args evaluated before binding) ===
|
|
|
|
if op in self.macros:
|
|
macro = self.macros[op]
|
|
macro_env = dict(env)
|
|
for i, pname in enumerate(macro['params']):
|
|
# Evaluate args in calling environment before binding
|
|
macro_env[pname] = self._eval(args[i], env) if i < len(args) else None
|
|
return self._eval(macro['body'], macro_env)
|
|
|
|
# Underscore variant lookup
|
|
prim_name = op.replace('-', '_')
|
|
if prim_name in self.primitives:
|
|
prim_func = self.primitives[prim_name]
|
|
evaluated_args = []
|
|
kwargs = {}
|
|
i = 0
|
|
while i < len(args):
|
|
if isinstance(args[i], Keyword):
|
|
k = args[i].name.replace('-', '_')
|
|
v = self._eval(args[i + 1], env) if i + 1 < len(args) else None
|
|
kwargs[k] = v
|
|
i += 2
|
|
else:
|
|
evaluated_args.append(self._eval(args[i], env))
|
|
i += 1
|
|
|
|
try:
|
|
if kwargs:
|
|
return prim_func(*evaluated_args, **kwargs)
|
|
return prim_func(*evaluated_args)
|
|
except Exception as e:
|
|
print(f"Primitive {op} error: {e}", file=sys.stderr)
|
|
return None
|
|
|
|
# Unknown - return as-is
|
|
return expr
|
|
|
|
def _step_scans(self, ctx: Context, env: dict):
|
|
"""Step scans based on trigger evaluation."""
|
|
for name, scan in self.scans.items():
|
|
trigger_expr = scan['trigger']
|
|
|
|
# Evaluate trigger in context
|
|
should_step = self._eval(trigger_expr, env)
|
|
|
|
if should_step:
|
|
state = scan['state']
|
|
step_env = dict(state)
|
|
step_env.update(env)
|
|
|
|
new_state = self._eval(scan['step'], step_env)
|
|
if isinstance(new_state, dict):
|
|
scan['state'] = new_state
|
|
else:
|
|
scan['state'] = {'acc': new_state}
|
|
|
|
def run(self, duration: float = None, output: str = "pipe"):
|
|
"""Run the streaming pipeline."""
|
|
# Import output classes - handle both package and direct execution
|
|
try:
|
|
from .output import PipeOutput, DisplayOutput, FileOutput
|
|
except ImportError:
|
|
from output import PipeOutput, DisplayOutput, FileOutput
|
|
|
|
self._init()
|
|
|
|
if not self.frame_pipeline:
|
|
print("Error: no (frame ...) pipeline defined", file=sys.stderr)
|
|
return
|
|
|
|
w = self.config.get('width', 720)
|
|
h = self.config.get('height', 720)
|
|
fps = self.config.get('fps', 30)
|
|
|
|
if duration is None:
|
|
# Try to get duration from audio if available
|
|
for name, val in self.globals.items():
|
|
if hasattr(val, 'duration'):
|
|
duration = val.duration
|
|
print(f"Using audio duration: {duration:.1f}s", file=sys.stderr)
|
|
break
|
|
else:
|
|
duration = 60.0
|
|
|
|
n_frames = int(duration * fps)
|
|
frame_time = 1.0 / fps
|
|
|
|
print(f"Streaming {n_frames} frames @ {fps}fps", file=sys.stderr)
|
|
|
|
# Create context
|
|
ctx = Context(fps=fps)
|
|
|
|
# Output (with optional audio sync)
|
|
audio = self.audio_playback
|
|
if output == "pipe":
|
|
out = PipeOutput(size=(w, h), fps=fps, audio_source=audio)
|
|
elif output == "preview":
|
|
out = DisplayOutput(size=(w, h), fps=fps, audio_source=audio)
|
|
else:
|
|
out = FileOutput(output, size=(w, h), fps=fps, audio_source=audio)
|
|
|
|
try:
|
|
frame_times = []
|
|
for frame_num in range(n_frames):
|
|
if not out.is_open:
|
|
break
|
|
|
|
frame_start = time.time()
|
|
ctx.t = frame_num * frame_time
|
|
ctx.frame_num = frame_num
|
|
|
|
# Build frame environment with context
|
|
frame_env = {
|
|
'ctx': {
|
|
't': ctx.t,
|
|
'frame-num': ctx.frame_num,
|
|
'fps': ctx.fps,
|
|
},
|
|
't': ctx.t, # Also expose t directly for convenience
|
|
'frame-num': ctx.frame_num,
|
|
}
|
|
|
|
# Step scans
|
|
self._step_scans(ctx, frame_env)
|
|
|
|
# Evaluate pipeline
|
|
result = self._eval(self.frame_pipeline, frame_env)
|
|
|
|
if result is not None and hasattr(result, 'shape'):
|
|
out.write(result, ctx.t)
|
|
|
|
frame_elapsed = time.time() - frame_start
|
|
frame_times.append(frame_elapsed)
|
|
|
|
# Progress with timing
|
|
if frame_num % 30 == 0:
|
|
pct = 100 * frame_num / n_frames
|
|
avg_ms = 1000 * sum(frame_times[-30:]) / max(1, len(frame_times[-30:]))
|
|
target_ms = 1000 * frame_time
|
|
print(f"\r{pct:5.1f}% [{avg_ms:.0f}ms/frame, target {target_ms:.0f}ms]", end="", file=sys.stderr, flush=True)
|
|
|
|
finally:
|
|
out.close()
|
|
print("\nDone", file=sys.stderr)
|
|
|
|
|
|
def run_stream(sexp_path: str, duration: float = None, output: str = "pipe", fps: float = None,
|
|
sources_config: str = None, audio_config: str = None):
|
|
"""Run a streaming sexp."""
|
|
interp = StreamInterpreter(sexp_path)
|
|
if fps:
|
|
interp.config['fps'] = fps
|
|
if sources_config:
|
|
interp.sources_config = Path(sources_config)
|
|
if audio_config:
|
|
interp.audio_config = Path(audio_config)
|
|
interp.run(duration=duration, output=output)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
import argparse
|
|
parser = argparse.ArgumentParser(description="Run streaming sexp (generic interpreter)")
|
|
parser.add_argument("sexp", help="Path to .sexp file")
|
|
parser.add_argument("-d", "--duration", type=float, default=None)
|
|
parser.add_argument("-o", "--output", default="pipe")
|
|
parser.add_argument("--fps", type=float, default=None)
|
|
parser.add_argument("--sources", dest="sources_config", help="Path to sources config .sexp file")
|
|
parser.add_argument("--audio", dest="audio_config", help="Path to audio config .sexp file")
|
|
args = parser.parse_args()
|
|
|
|
run_stream(args.sexp, duration=args.duration, output=args.output, fps=args.fps,
|
|
sources_config=args.sources_config, audio_config=args.audio_config)
|