Initial public release of JustOneCacophony
This commit is contained in:
TheM14
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"""JustOneCacophony 的 E-AC-3 JOC 命令行入口。"""
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import argparse
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import hashlib
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import json
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import math
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import os
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from pathlib import Path
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import platform
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import shutil
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import subprocess
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import sys
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import tempfile
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import time
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PROJECT_DIR = Path(__file__).resolve().parent
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SOURCE_DIR = PROJECT_DIR / "src"
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if str(SOURCE_DIR) not in sys.path:
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sys.path.insert(0, str(SOURCE_DIR))
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import numpy as np
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import adm_assemble
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from adm_validate import validate
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from metadata import DirectPayloadIndex, PayloadIndex, write_summary
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import oamd_tracks
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from renderer import JocRenderer
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from native_renderer import NativeBackendUnavailable, NativeJocRenderer
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from speaker_backend import create_speaker_renderer
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from speaker_layouts import (SPEAKER_LAYOUT_CHOICES, get_speaker_layout,
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speaker_layout_display_name)
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from speaker_wav import SpeakerPcmSpool, write_speaker_wav
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from variant_error import UnsupportedVariantError, write_variant_report
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RATE = 48000
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FRAME_SAMPLES = 1536
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DEFAULT_OUTPUT_DIR = PROJECT_DIR / "output"
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def resolve_output(source, requested=None, speaker_layout=None):
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"""解析成品路径；未指定时使用项目内的 ``output`` 目录。"""
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source = Path(source)
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if requested is not None:
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target = Path(requested)
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elif speaker_layout is not None:
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target = DEFAULT_OUTPUT_DIR / f"{source.stem}.{speaker_layout}.wav"
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else:
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target = DEFAULT_OUTPUT_DIR / (source.stem + ".adm.wav")
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return target.expanduser().resolve()
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def executable(value, name):
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path = shutil.which(value) if value else None
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if path is None and value and Path(value).is_file():
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path = str(Path(value).resolve())
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if path is None:
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raise FileNotFoundError(f"找不到 {name}: {value!r}")
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return path
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def run(command, label):
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print(f"[{label}]", flush=True)
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result = subprocess.run(command, stdout=subprocess.DEVNULL, stderr=subprocess.PIPE,
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text=True, encoding="utf-8", errors="replace")
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if result.returncode:
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tail = result.stderr[-4000:]
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raise RuntimeError(f"{label} 失败（exit {result.returncode}）\n{tail}")
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def timed_call(timings, name, function, *args, **kwargs):
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started = time.perf_counter()
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try:
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return function(*args, **kwargs)
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finally:
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timings[name] = time.perf_counter() - started
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def extract_eac3(ffmpeg, source, target):
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if source.suffix.lower() in (".eac3", ".ec3"):
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return source
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run([ffmpeg, "-hide_banner", "-loglevel", "error", "-y", "-i", str(source),
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"-map", "0:a:0", "-vn", "-c:a", "copy", "-f", "eac3", str(target)],
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"FFmpeg 提取 E-AC-3")
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return target
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def decode_core(ffmpeg, eac3, target, duration_sec=None):
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# 5.1(side) 的 f32le 顺序为 FL FR FC LFE SL SR；JOC 使用其中 0,1,2,4,5。
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command = [ffmpeg, "-hide_banner", "-loglevel", "error", "-y", "-i", str(eac3),
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"-map", "0:a:0", "-vn"]
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if duration_sec is not None:
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command.extend(["-t", f"{duration_sec:.9f}"])
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command.extend(["-ac", "6", "-ar", str(RATE),
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"-c:a", "pcm_f32le", "-f", "f32le", str(target)])
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run(command, "FFmpeg 解码核心 5.1 PCM")
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return target
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def sha256(path):
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digest = hashlib.sha256()
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with Path(path).open("rb") as fp:
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for block in iter(lambda: fp.read(16 << 20), b""):
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digest.update(block)
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return digest.hexdigest()
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def choose_speaker_output_format(requested_format, clip_action, peak, clipped_values,
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*, input_func=input, interactive=None):
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"""Resolve int24 clipping interactively or through an explicit policy."""
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if requested_format != "int24" or clipped_values == 0:
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return requested_format
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print(
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f"[clip] int24 将发生削波：peak={peak:.9g}，超出 [-1,1] 的样本值={clipped_values}",
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file=sys.stderr, flush=True)
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action = clip_action
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if action == "ask":
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if interactive is None:
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interactive = bool(getattr(sys.stdin, "isatty", lambda: False)())
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if not interactive:
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raise RuntimeError(
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"检测到 int24 削波，但当前不是交互终端；请使用 "
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"--clip-action continue、--clip-action float32 或 --clip-action abort")
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while True:
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answer = input_func(
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"继续写 int24 并截断 [i] / 改为 float32 [f，默认] / 取消 [a]："
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).strip().lower()
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if answer in ("", "f", "float", "float32"):
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action = "float32"
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break
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if answer in ("i", "int", "int24", "c", "continue"):
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action = "continue"
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break
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if answer in ("a", "abort", "q", "quit", "n", "no"):
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action = "abort"
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break
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print("请输入 i、f 或 a。", file=sys.stderr, flush=True)
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if action == "continue":
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print("[clip] 将继续写 int24，超范围值会截断到 [-1,1]。", flush=True)
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return "int24"
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if action == "float32":
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print("[clip] 已切换为 float32 WAV，不执行截断。", flush=True)
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return "float32"
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if action == "abort":
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raise RuntimeError("用户因 int24 削波取消输出")
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raise ValueError(f"未知 clip action: {action}")
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def resolve_metadata(args, eac3, temp_dir):
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if args.metadata_dir:
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directory = Path(args.metadata_dir).resolve()
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return PayloadIndex(directory), "sidecar", directory
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if args.metadata_backend == "sidecar":
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raise ValueError("metadata-backend=sidecar 时必须提供 --metadata-dir")
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cache_dir = (args.metadata_cache.expanduser().resolve()
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if args.metadata_cache else None)
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max_frames = (math.ceil(args.duration * RATE / FRAME_SAMPLES)
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if args.duration is not None else None)
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index = DirectPayloadIndex.from_eac3(
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eac3, max_frames=max_frames, cache_dir=cache_dir)
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return index, "python-emdf-memory", cache_dir
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def variant_call(output, source, function, *args, **kwargs):
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"""执行一个阶段；遇到未知变体时在目标文件旁写结构化报告。"""
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try:
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return function(*args, **kwargs)
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except UnsupportedVariantError as exc:
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report_path = Path(str(output) + ".variant-error.json")
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write_variant_report(report_path, exc, input_path=source, output_path=output)
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print(f"[VARIANT] {exc}", file=sys.stderr, flush=True)
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print(f"[VARIANT] 维修报告: {report_path}", file=sys.stderr, flush=True)
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raise
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def create_renderer(backend, gain, native_library=None, native_threads=None):
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"""选择整帧 DSP 后端；auto 优先使用 lib 中当前平台的原生构建。"""
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if backend in ("auto", "native"):
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try:
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decoder = NativeJocRenderer(
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output_scale=gain, library_path=native_library, threads=native_threads)
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info = {
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"name": "native",
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"library": str(decoder.library_path),
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"build": decoder.build_info,
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"threads": decoder.threads,
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}
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print(f"[backend] native: {info['build']} threads={info['threads']} "
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f"({info['library']})", flush=True)
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return decoder, info
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except (NativeBackendUnavailable, OSError) as exc:
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print(f"[backend] native unavailable, falling back to Python: {exc}", flush=True)
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decoder = JocRenderer(output_scale=gain)
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info = {"name": "python", "library": None, "build": None, "threads": None}
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print("[backend] python/numpy", flush=True)
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return decoder, info
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def render(index, bed_path, frame_count, raw_path, gain, progress_every,
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backend="auto", native_library=None, native_threads=None, frame_sink=None,
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speaker_renderer=None, speaker_sink=None, speaker_metadata_offset=1473):
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values = np.memmap(bed_path, dtype=np.float32, mode="r")
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frame_width = FRAME_SAMPLES * 6
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if values.size % frame_width:
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raise ValueError(f"FFmpeg PCM 长度不是 1536×6 的整数倍: {values.size}")
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bed = values.reshape(-1, FRAME_SAMPLES, 6)
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if len(bed) < frame_count:
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raise ValueError(f"PCM 只有 {len(bed)} 帧，元数据需要 {frame_count} 帧")
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output = (np.memmap(raw_path, dtype=np.float32, mode="w+",
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shape=(frame_count, FRAME_SAMPLES, 16))
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if raw_path is not None else None)
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decoder, backend_info = create_renderer(backend, gain, native_library, native_threads)
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started = time.perf_counter()
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dsp_seconds = 0.0
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adm_stream_seconds = 0.0
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raw_write_seconds = 0.0
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speaker_render_seconds = 0.0
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speaker_write_seconds = 0.0
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try:
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for frame_number, row in enumerate(index.rows[:frame_count]):
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bed6 = np.asarray(bed[frame_number], dtype=np.float32)
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subs = index.subpayloads(row)
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stage = time.perf_counter()
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pcm16, _ = decoder.render_subpayloads(
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subs, bed6[:, [0, 1, 2, 4, 5]].T, bed6[:, 3])
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dsp_seconds += time.perf_counter() - stage
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if output is not None:
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stage = time.perf_counter()
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output[frame_number] = pcm16.T
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raw_write_seconds += time.perf_counter() - stage
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if frame_sink is not None:
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stage = time.perf_counter()
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frame_sink.write_frame(pcm16)
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adm_stream_seconds += time.perf_counter() - stage
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if speaker_renderer is not None:
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stage = time.perf_counter()
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speaker_pcm = speaker_renderer.render_frame(
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pcm16.T, subs.get(11), speaker_metadata_offset)
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speaker_render_seconds += time.perf_counter() - stage
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stage = time.perf_counter()
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speaker_sink.write_frame(speaker_pcm)
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speaker_write_seconds += time.perf_counter() - stage
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done = frame_number + 1
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if done % progress_every == 0 or done == frame_count:
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elapsed = time.perf_counter() - started
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speed = done / max(elapsed, 1e-9)
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eta = (frame_count - done) / max(speed, 1e-9)
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print(f"[JOC:{backend_info['name']}] {done}/{frame_count} "
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f"{speed:.1f} frame/s ETA {eta:.1f}s", flush=True)
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if output is not None:
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output.flush()
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elapsed = time.perf_counter() - started
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finally:
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close = getattr(decoder, "close", None)
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if close is not None:
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close()
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close = getattr(speaker_renderer, "close", None)
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if close is not None:
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close()
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breakdown = {
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"pipeline_wall_seconds": elapsed,
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"dsp_and_joc_parse_seconds": dsp_seconds,
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"adm_stream_write_seconds": adm_stream_seconds,
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"raw_float_write_seconds": raw_write_seconds,
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"speaker_render_seconds": speaker_render_seconds,
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"speaker_spool_write_seconds": speaker_write_seconds,
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}
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return dsp_seconds, backend_info, breakdown
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def build_parser():
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parser = argparse.ArgumentParser(
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description="JustOneCacophony (JOC)：E-AC-3 JOC → 25ch ADM BWF 或扬声器 WAV")
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parser.add_argument("input", type=Path, help="输入 .m4a/.eac3/.ec3")
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parser.add_argument("-o", "--output", type=Path, help="输出文件；默认按模式和布局命名")
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parser.add_argument("--speaker-output", type=Path,
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help="扬声器 WAV 路径；仅与 --speaker-layout 一起使用")
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parser.add_argument("--speaker-layout", choices=SPEAKER_LAYOUT_CHOICES,
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help="直接扬声器渲染布局，例如 2.0、5.1、7.1.2")
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parser.add_argument("--speaker-format", choices=("float32", "int24"), default="float32",
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help="扬声器 WAV 格式，默认 float32")
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parser.add_argument("--clip-action", choices=("ask", "continue", "float32", "abort"),
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default="ask",
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help="int24 削波处理：交互询问、继续截断、改 float32 或中止")
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parser.add_argument("--speaker-metadata-offset", type=int, default=1473,
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help="扬声器渲染 metadata 相对帧偏移，默认 1473 samples")
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parser.add_argument("--gain-db", type=float, default=0.0,
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help="成品增益 dB，默认 0（float32 系数 1.0）")
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parser.add_argument("--duration", type=float, help="只处理开头指定秒数")
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parser.add_argument("--object-delay-samples", type=int, default=640,
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help="可选的对象 PCM/OAMD 时间补偿，默认 640 samples")
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parser.add_argument("--trajectory-mode", choices=("compact", "dense64"), default="compact",
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help="对象轨迹表示；compact 用长线性插值压缩 AXML，dense64 保留逐 64-sample 块")
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parser.add_argument("--ffmpeg", default=os.environ.get("FFMPEG", "ffmpeg"))
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parser.add_argument("--backend", choices=("auto", "native", "python"), default="auto",
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help="DSP 后端；auto 优先 C++，不可用时回退 Python")
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parser.add_argument("--native-library", type=Path,
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help="显式指定原生库；默认从单层 lib 目录选择当前平台文件")
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parser.add_argument("--native-threads", type=int,
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help="原生 DSP 总线程数；默认在 4 核以上使用 2，可用环境变量 EAC3JOC_NATIVE_THREADS 覆盖")
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metadata_source = parser.add_mutually_exclusive_group()
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metadata_source.add_argument("--metadata-dir", type=Path,
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help="含 frames.csv 和 emdf/ 或 payloads/ 的元数据 sidecar")
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metadata_source.add_argument("--metadata-cache", type=Path,
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help="把直接 EMDF 扫描或兼容桥结果持久保存到此目录")
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parser.add_argument("--metadata-backend", choices=("auto", "emdf", "sidecar"),
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default="auto", help="直接扫描连续 EMDF，或读取现有 sidecar")
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parser.add_argument("--print-metadata", choices=("none", "summary", "frames"), default="none",
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help="诊断元数据输出；默认 none，避免转换前重复完整解析")
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parser.add_argument("--metadata-json", type=Path, help="元数据汇总 JSON 路径")
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parser.add_argument("--metadata-only", action="store_true", help="解析/打印元数据后退出")
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parser.add_argument("--keep-raw", action="store_true", help="额外保留 16ch f32le 对象中间文件")
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parser.add_argument("--skip-sha256", action="store_true",
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help="跳过最终文件 SHA-256 全量复扫以缩短大文件处理时间")
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parser.add_argument("--progress-every", type=int, default=500)
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return parser
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def main(argv=None):
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# Windows 控制台的活动代码页未必能表示日文文件名；保留信息并避免
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# UnicodeEncodeError 中断长任务。支持 UTF-8 的终端仍会原样显示。
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for stream in (sys.stdout, sys.stderr):
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if hasattr(stream, "reconfigure"):
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stream.reconfigure(encoding="utf-8", errors="backslashreplace")
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args = build_parser().parse_args(argv)
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source = args.input.expanduser().resolve()
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if not source.is_file():
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raise FileNotFoundError(source)
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speaker_mode = args.speaker_layout is not None
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if args.speaker_output is not None and not speaker_mode:
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raise ValueError("--speaker-output 必须与 --speaker-layout 一起使用")
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if args.output is not None and args.speaker_output is not None:
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raise ValueError("-o/--output 与 --speaker-output 不能同时使用")
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if args.speaker_metadata_offset < 0:
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raise ValueError("speaker-metadata-offset 不能为负数")
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requested_output = (args.speaker_output if args.speaker_output is not None
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else args.output)
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output = resolve_output(
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source, requested_output, args.speaker_layout if speaker_mode else None)
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output.parent.mkdir(parents=True, exist_ok=True)
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if args.duration is not None and args.duration <= 0:
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raise ValueError("duration 必须大于 0")
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if args.object_delay_samples < 0:
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raise ValueError("object-delay-samples 不能为负数")
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gain = np.float32(10.0 ** (args.gain_db / 20.0))
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if not np.isfinite(gain):
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raise ValueError("gain-db 超出 float32 范围")
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ffmpeg = executable(args.ffmpeg, "FFmpeg")
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total_started = time.perf_counter()
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timings = {}
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with tempfile.TemporaryDirectory(prefix="eac3joc-", dir=output.parent) as temporary:
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temp_dir = Path(temporary)
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eac3 = timed_call(timings, "extract_eac3", extract_eac3,
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ffmpeg, source, temp_dir / "input.eac3")
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index, metadata_backend, metadata_cache_dir = timed_call(
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timings, "resolve_metadata", variant_call,
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output, source, resolve_metadata, args, eac3, temp_dir)
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timings["load_metadata_index"] = 0.0
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frame_count = len(index)
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if args.duration is not None:
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||||
frame_count = min(frame_count, math.ceil(args.duration * RATE / FRAME_SAMPLES))
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||||
duration_sec = frame_count * FRAME_SAMPLES / RATE
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need_metadata_summary = (
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||||
args.metadata_only or args.metadata_json is not None or args.print_metadata != "none")
|
||||
if need_metadata_summary:
|
||||
metadata_json = (args.metadata_json or Path(str(output) + ".metadata.json")).resolve()
|
||||
summary = timed_call(
|
||||
timings, "metadata_summary", variant_call,
|
||||
output, source, write_summary, index, metadata_json, limit=frame_count,
|
||||
print_frames=args.print_metadata == "frames")
|
||||
if args.print_metadata == "summary":
|
||||
print("[metadata] " + json.dumps(summary, ensure_ascii=False, separators=(",", ":")))
|
||||
print(f"[metadata] backend={metadata_backend} frames={frame_count} -> {metadata_json}")
|
||||
else:
|
||||
metadata_json = None
|
||||
timings["metadata_summary"] = 0.0
|
||||
print(f"[metadata] backend={metadata_backend} frames={frame_count} summary=skipped")
|
||||
if args.metadata_only:
|
||||
return 0
|
||||
|
||||
bed_path = timed_call(
|
||||
timings, "decode_core", decode_core,
|
||||
ffmpeg, eac3, temp_dir / "core51_f32le.raw", duration_sec)
|
||||
raw_path = (output.with_name(output.name + ".objects16.f32le")
|
||||
if args.keep_raw else None)
|
||||
master = None
|
||||
speaker_backend_info = None
|
||||
speaker_wav_info = None
|
||||
speaker_clip_info = None
|
||||
speaker_actual_format = None
|
||||
if speaker_mode:
|
||||
layout = get_speaker_layout(args.speaker_layout)
|
||||
speaker_name = speaker_layout_display_name(layout)
|
||||
speaker_decoder, speaker_backend_info = create_speaker_renderer(
|
||||
layout, backend=args.backend, native_library=args.native_library)
|
||||
fallback = speaker_backend_info.get("fallback_reason")
|
||||
if fallback:
|
||||
print(f"[speaker] native unavailable, falling back to Python: {fallback}",
|
||||
flush=True)
|
||||
print(f"[speaker] layout={speaker_name} backend={speaker_backend_info['name']} "
|
||||
f"channels={layout.channel_count}", flush=True)
|
||||
spool = SpeakerPcmSpool(
|
||||
temp_dir / "speaker_interleaved_f32.raw",
|
||||
frame_count * FRAME_SAMPLES, layout.channel_count)
|
||||
try:
|
||||
render_seconds, renderer_backend, render_breakdown = timed_call(
|
||||
timings, "render_and_stream", variant_call,
|
||||
output, source, render, index, bed_path, frame_count, raw_path, gain,
|
||||
max(1, args.progress_every), args.backend, args.native_library,
|
||||
args.native_threads, None, speaker_decoder, spool,
|
||||
args.speaker_metadata_offset)
|
||||
spool.finalize()
|
||||
speaker_actual_format = choose_speaker_output_format(
|
||||
args.speaker_format, args.clip_action, spool.peak,
|
||||
spool.clipped_values)
|
||||
speaker_wav_info = timed_call(
|
||||
timings, "write_speaker_wav", write_speaker_wav,
|
||||
output, spool.values, speaker_actual_format, rate=RATE)
|
||||
speaker_clip_info = {
|
||||
"peak": spool.peak,
|
||||
"over_unity_values": spool.clipped_values,
|
||||
"requested_format": args.speaker_format,
|
||||
"actual_format": speaker_actual_format,
|
||||
"clip_action": args.clip_action,
|
||||
}
|
||||
finally:
|
||||
spool.close()
|
||||
timings["build_adm_tracks"] = 0.0
|
||||
timings["finalize_adm"] = 0.0
|
||||
timings["validate_adm"] = 0.0
|
||||
info = (f"speaker layout={speaker_name}, format={speaker_actual_format}, "
|
||||
f"peak={speaker_clip_info['peak']:.9g}")
|
||||
else:
|
||||
master = adm_assemble.StreamingMaster(output, duration_sec, rate=RATE)
|
||||
try:
|
||||
render_seconds, renderer_backend, render_breakdown = timed_call(
|
||||
timings, "render_and_stream", variant_call,
|
||||
output, source, render, index, bed_path, frame_count, raw_path, gain,
|
||||
max(1, args.progress_every), args.backend, args.native_library,
|
||||
args.native_threads, master)
|
||||
tracks = timed_call(
|
||||
timings, "build_adm_tracks", variant_call,
|
||||
output, source, oamd_tracks.build_adm_tracks,
|
||||
index, index.rows[:frame_count], rate=RATE, frame_samples=FRAME_SAMPLES,
|
||||
object_delay_samples=args.object_delay_samples,
|
||||
trajectory_mode=args.trajectory_mode)
|
||||
timed_call(timings, "finalize_adm", master.finalize, tracks)
|
||||
except Exception:
|
||||
master.abort()
|
||||
raise
|
||||
errors, info = timed_call(timings, "validate_adm", validate, str(output))
|
||||
if errors:
|
||||
raise RuntimeError("ADM 校验失败: " + "; ".join(errors))
|
||||
# Windows 不允许删除仍被 NumPy memmap 持有的临时 core/raw；显式回收闭包。
|
||||
import gc
|
||||
gc.collect()
|
||||
|
||||
if args.skip_sha256:
|
||||
output_sha = None
|
||||
timings["sha256"] = 0.0
|
||||
else:
|
||||
output_sha = timed_call(timings, "sha256", sha256, output)
|
||||
total_seconds = time.perf_counter() - total_started
|
||||
report = {
|
||||
"input": str(source),
|
||||
"output": str(output),
|
||||
"mode": "speaker" if speaker_mode else "adm",
|
||||
"metadata": str(metadata_json) if metadata_json is not None else None,
|
||||
"metadata_backend": metadata_backend,
|
||||
"metadata_cache": str(metadata_cache_dir) if metadata_cache_dir is not None else None,
|
||||
"frames": frame_count,
|
||||
"duration_sec": duration_sec,
|
||||
"gain_db": args.gain_db,
|
||||
"gain_float32": float(gain),
|
||||
"object_delay_samples": None if speaker_mode else args.object_delay_samples,
|
||||
"trajectory_mode": None if speaker_mode else args.trajectory_mode,
|
||||
"render_seconds": render_seconds,
|
||||
"render_breakdown": render_breakdown,
|
||||
"renderer_backend": renderer_backend,
|
||||
"speaker_renderer_backend": speaker_backend_info,
|
||||
"speaker_layout": args.speaker_layout if speaker_mode else None,
|
||||
"speaker_metadata_offset": args.speaker_metadata_offset if speaker_mode else None,
|
||||
"speaker_clip": speaker_clip_info,
|
||||
"speaker_wav": speaker_wav_info,
|
||||
"streaming_adm": not speaker_mode,
|
||||
"kept_raw": str(raw_path) if raw_path is not None else None,
|
||||
"timings": timings,
|
||||
"total_seconds": total_seconds,
|
||||
"adm_validation": None if speaker_mode else info,
|
||||
"adm_metadata": getattr(master, "metadata_info", None) if master is not None else None,
|
||||
"sha256": output_sha,
|
||||
"python": platform.python_version(),
|
||||
"numpy": np.__version__,
|
||||
}
|
||||
report_path = Path(str(output) + ".report.json")
|
||||
report_path.write_text(json.dumps(report, ensure_ascii=False, indent=2), encoding="utf-8")
|
||||
print(f"[PASS] {output}")
|
||||
if report["sha256"] is None:
|
||||
print(f"[PASS] {info}; SHA-256 skipped")
|
||||
else:
|
||||
print(f"[PASS] {info}; SHA-256={report['sha256']}")
|
||||
if speaker_mode:
|
||||
print(f"[time] JOC-DSP={render_seconds:.2f}s ({renderer_backend['name']}) "
|
||||
f"speaker={render_breakdown['speaker_render_seconds']:.2f}s "
|
||||
f"pipeline={render_breakdown['pipeline_wall_seconds']:.2f}s "
|
||||
f"total={report['total_seconds']:.2f}s")
|
||||
else:
|
||||
print(f"[time] DSP={render_seconds:.2f}s ({renderer_backend['name']}) "
|
||||
f"render+ADM-stream={render_breakdown['pipeline_wall_seconds']:.2f}s "
|
||||
f"total={report['total_seconds']:.2f}s")
|
||||
print(f"[report] {report_path}")
|
||||
return 0
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
try:
|
||||
raise SystemExit(main())
|
||||
except KeyboardInterrupt:
|
||||
raise SystemExit(130)
|
||||
Reference in New Issue
Block a user