initial commit

py/helper.py

@@ -0,0 +1,429 @@
+import json
+import os
+import time
+from contextlib import contextmanager
+from typing import Optional
+from unicodedata import normalize
+
+import numpy as np
+import onnxruntime as ort
+
+import re
+
+AVAILABLE_LANGS = ["en", "ko", "es", "pt", "fr"]
+
+
+class UnicodeProcessor:
+    def __init__(self, unicode_indexer_path: str):
+        with open(unicode_indexer_path, "r") as f:
+            self.indexer = json.load(f)
+
+    def _preprocess_text(self, text: str, lang: str) -> str:
+        # TODO: Need advanced normalizer for better performance
+        text = normalize("NFKD", text)
+
+        # Remove emojis (wide Unicode range)
+        emoji_pattern = re.compile(
+            "[\U0001f600-\U0001f64f"  # emoticons
+            "\U0001f300-\U0001f5ff"  # symbols & pictographs
+            "\U0001f680-\U0001f6ff"  # transport & map symbols
+            "\U0001f700-\U0001f77f"
+            "\U0001f780-\U0001f7ff"
+            "\U0001f800-\U0001f8ff"
+            "\U0001f900-\U0001f9ff"
+            "\U0001fa00-\U0001fa6f"
+            "\U0001fa70-\U0001faff"
+            "\u2600-\u26ff"
+            "\u2700-\u27bf"
+            "\U0001f1e6-\U0001f1ff]+",
+            flags=re.UNICODE,
+        )
+        text = emoji_pattern.sub("", text)
+
+        # Replace various dashes and symbols
+        replacements = {
+            "–": "-",
+            "‑": "-",
+            "—": "-",
+            "_": " ",
+            "\u201c": '"',  # left double quote "
+            "\u201d": '"',  # right double quote "
+            "\u2018": "'",  # left single quote '
+            "\u2019": "'",  # right single quote '
+            "´": "'",
+            "`": "'",
+            "[": " ",
+            "]": " ",
+            "|": " ",
+            "/": " ",
+            "#": " ",
+            "→": " ",
+            "←": " ",
+        }
+        for k, v in replacements.items():
+            text = text.replace(k, v)
+
+        # Remove special symbols
+        text = re.sub(r"[♥☆♡©\\]", "", text)
+
+        # Replace known expressions
+        expr_replacements = {
+            "@": " at ",
+            "e.g.,": "for example, ",
+            "i.e.,": "that is, ",
+        }
+        for k, v in expr_replacements.items():
+            text = text.replace(k, v)
+
+        # Fix spacing around punctuation
+        text = re.sub(r" ,", ",", text)
+        text = re.sub(r" \.", ".", text)
+        text = re.sub(r" !", "!", text)
+        text = re.sub(r" \?", "?", text)
+        text = re.sub(r" ;", ";", text)
+        text = re.sub(r" :", ":", text)
+        text = re.sub(r" '", "'", text)
+
+        # Remove duplicate quotes
+        while '""' in text:
+            text = text.replace('""', '"')
+        while "''" in text:
+            text = text.replace("''", "'")
+        while "``" in text:
+            text = text.replace("``", "`")
+
+        # Remove extra spaces
+        text = re.sub(r"\s+", " ", text).strip()
+
+        # If text doesn't end with punctuation, quotes, or closing brackets, add a period
+        if not re.search(r"[.!?;:,'\"')\]}…。」』】〉》›»]$", text):
+            text += "."
+
+        if lang not in AVAILABLE_LANGS:
+            raise ValueError(f"Invalid language: {lang}")
+        text = f"<{lang}>" + text + f"</{lang}>"
+        return text
+
+    def _get_text_mask(self, text_ids_lengths: np.ndarray) -> np.ndarray:
+        text_mask = length_to_mask(text_ids_lengths)
+        return text_mask
+
+    def _text_to_unicode_values(self, text: str) -> np.ndarray:
+        unicode_values = np.array(
+            [ord(char) for char in text], dtype=np.uint16
+        )  # 2 bytes
+        return unicode_values
+
+    def __call__(
+        self, text_list: list[str], lang_list: list[str]
+    ) -> tuple[np.ndarray, np.ndarray]:
+        text_list = [
+            self._preprocess_text(t, lang) for t, lang in zip(text_list, lang_list)
+        ]
+        text_ids_lengths = np.array([len(text) for text in text_list], dtype=np.int64)
+        text_ids = np.zeros((len(text_list), text_ids_lengths.max()), dtype=np.int64)
+        for i, text in enumerate(text_list):
+            unicode_vals = self._text_to_unicode_values(text)
+            text_ids[i, : len(unicode_vals)] = np.array(
+                [self.indexer[val] for val in unicode_vals], dtype=np.int64
+            )
+        text_mask = self._get_text_mask(text_ids_lengths)
+        return text_ids, text_mask
+
+
+class Style:
+    def __init__(self, style_ttl_onnx: np.ndarray, style_dp_onnx: np.ndarray):
+        self.ttl = style_ttl_onnx
+        self.dp = style_dp_onnx
+
+
+class TextToSpeech:
+    def __init__(
+        self,
+        cfgs: dict,
+        text_processor: UnicodeProcessor,
+        dp_ort: ort.InferenceSession,
+        text_enc_ort: ort.InferenceSession,
+        vector_est_ort: ort.InferenceSession,
+        vocoder_ort: ort.InferenceSession,
+    ):
+        self.cfgs = cfgs
+        self.text_processor = text_processor
+        self.dp_ort = dp_ort
+        self.text_enc_ort = text_enc_ort
+        self.vector_est_ort = vector_est_ort
+        self.vocoder_ort = vocoder_ort
+        self.sample_rate = cfgs["ae"]["sample_rate"]
+        self.base_chunk_size = cfgs["ae"]["base_chunk_size"]
+        self.chunk_compress_factor = cfgs["ttl"]["chunk_compress_factor"]
+        self.ldim = cfgs["ttl"]["latent_dim"]
+
+    def sample_noisy_latent(
+        self, duration: np.ndarray
+    ) -> tuple[np.ndarray, np.ndarray]:
+        bsz = len(duration)
+        wav_len_max = duration.max() * self.sample_rate
+        wav_lengths = (duration * self.sample_rate).astype(np.int64)
+        chunk_size = self.base_chunk_size * self.chunk_compress_factor
+        latent_len = ((wav_len_max + chunk_size - 1) / chunk_size).astype(np.int32)
+        latent_dim = self.ldim * self.chunk_compress_factor
+        noisy_latent = np.random.randn(bsz, latent_dim, latent_len).astype(np.float32)
+        latent_mask = get_latent_mask(
+            wav_lengths, self.base_chunk_size, self.chunk_compress_factor
+        )
+        noisy_latent = noisy_latent * latent_mask
+        return noisy_latent, latent_mask
+
+    def _infer(
+        self,
+        text_list: list[str],
+        lang_list: list[str],
+        style: Style,
+        total_step: int,
+        speed: float = 1.05,
+    ) -> tuple[np.ndarray, np.ndarray]:
+        assert (
+            len(text_list) == style.ttl.shape[0]
+        ), "Number of texts must match number of style vectors"
+        bsz = len(text_list)
+        text_ids, text_mask = self.text_processor(text_list, lang_list)
+        dur_onnx, *_ = self.dp_ort.run(
+            None, {"text_ids": text_ids, "style_dp": style.dp, "text_mask": text_mask}
+        )
+        dur_onnx = dur_onnx / speed
+        text_emb_onnx, *_ = self.text_enc_ort.run(
+            None,
+            {"text_ids": text_ids, "style_ttl": style.ttl, "text_mask": text_mask},
+        )  # dur_onnx: [bsz]
+        xt, latent_mask = self.sample_noisy_latent(dur_onnx)
+        total_step_np = np.array([total_step] * bsz, dtype=np.float32)
+        for step in range(total_step):
+            current_step = np.array([step] * bsz, dtype=np.float32)
+            xt, *_ = self.vector_est_ort.run(
+                None,
+                {
+                    "noisy_latent": xt,
+                    "text_emb": text_emb_onnx,
+                    "style_ttl": style.ttl,
+                    "text_mask": text_mask,
+                    "latent_mask": latent_mask,
+                    "current_step": current_step,
+                    "total_step": total_step_np,
+                },
+            )
+        wav, *_ = self.vocoder_ort.run(None, {"latent": xt})
+        return wav, dur_onnx
+
+    def __call__(
+        self,
+        text: str,
+        lang: str,
+        style: Style,
+        total_step: int,
+        speed: float = 1.05,
+        silence_duration: float = 0.3,
+    ) -> tuple[np.ndarray, np.ndarray]:
+        assert (
+            style.ttl.shape[0] == 1
+        ), "Single speaker text to speech only supports single style"
+        max_len = 120 if lang == "ko" else 300
+        text_list = chunk_text(text, max_len=max_len)
+        wav_cat = None
+        dur_cat = None
+        for text in text_list:
+            wav, dur_onnx = self._infer([text], [lang], style, total_step, speed)
+            if wav_cat is None:
+                wav_cat = wav
+                dur_cat = dur_onnx
+            else:
+                silence = np.zeros(
+                    (1, int(silence_duration * self.sample_rate)), dtype=np.float32
+                )
+                wav_cat = np.concatenate([wav_cat, silence, wav], axis=1)
+                dur_cat += dur_onnx + silence_duration
+        return wav_cat, dur_cat
+
+    def batch(
+        self,
+        text_list: list[str],
+        lang_list: list[str],
+        style: Style,
+        total_step: int,
+        speed: float = 1.05,
+    ) -> tuple[np.ndarray, np.ndarray]:
+        return self._infer(text_list, lang_list, style, total_step, speed)
+
+
+def length_to_mask(lengths: np.ndarray, max_len: Optional[int] = None) -> np.ndarray:
+    """
+    Convert lengths to binary mask.
+
+    Args:
+        lengths: (B,)
+        max_len: int
+
+    Returns:
+        mask: (B, 1, max_len)
+    """
+    max_len = max_len or lengths.max()
+    ids = np.arange(0, max_len)
+    mask = (ids < np.expand_dims(lengths, axis=1)).astype(np.float32)
+    return mask.reshape(-1, 1, max_len)
+
+
+def get_latent_mask(
+    wav_lengths: np.ndarray, base_chunk_size: int, chunk_compress_factor: int
+) -> np.ndarray:
+    latent_size = base_chunk_size * chunk_compress_factor
+    latent_lengths = (wav_lengths + latent_size - 1) // latent_size
+    latent_mask = length_to_mask(latent_lengths)
+    return latent_mask
+
+
+def load_onnx(
+    onnx_path: str, opts: ort.SessionOptions, providers: list[str]
+) -> ort.InferenceSession:
+    return ort.InferenceSession(onnx_path, sess_options=opts, providers=providers)
+
+
+def load_onnx_all(
+    onnx_dir: str, opts: ort.SessionOptions, providers: list[str]
+) -> tuple[
+    ort.InferenceSession,
+    ort.InferenceSession,
+    ort.InferenceSession,
+    ort.InferenceSession,
+]:
+    dp_onnx_path = os.path.join(onnx_dir, "duration_predictor.onnx")
+    text_enc_onnx_path = os.path.join(onnx_dir, "text_encoder.onnx")
+    vector_est_onnx_path = os.path.join(onnx_dir, "vector_estimator.onnx")
+    vocoder_onnx_path = os.path.join(onnx_dir, "vocoder.onnx")
+
+    dp_ort = load_onnx(dp_onnx_path, opts, providers)
+    text_enc_ort = load_onnx(text_enc_onnx_path, opts, providers)
+    vector_est_ort = load_onnx(vector_est_onnx_path, opts, providers)
+    vocoder_ort = load_onnx(vocoder_onnx_path, opts, providers)
+    return dp_ort, text_enc_ort, vector_est_ort, vocoder_ort
+
+
+def load_cfgs(onnx_dir: str) -> dict:
+    cfg_path = os.path.join(onnx_dir, "tts.json")
+    with open(cfg_path, "r") as f:
+        cfgs = json.load(f)
+    return cfgs
+
+
+def load_text_processor(onnx_dir: str) -> UnicodeProcessor:
+    unicode_indexer_path = os.path.join(onnx_dir, "unicode_indexer.json")
+    text_processor = UnicodeProcessor(unicode_indexer_path)
+    return text_processor
+
+
+def load_text_to_speech(onnx_dir: str, use_gpu: bool = False) -> TextToSpeech:
+    opts = ort.SessionOptions()
+    if use_gpu:
+        raise NotImplementedError("GPU mode is not fully tested")
+    else:
+        providers = ["CPUExecutionProvider"]
+        print("Using CPU for inference")
+    cfgs = load_cfgs(onnx_dir)
+    dp_ort, text_enc_ort, vector_est_ort, vocoder_ort = load_onnx_all(
+        onnx_dir, opts, providers
+    )
+    text_processor = load_text_processor(onnx_dir)
+    return TextToSpeech(
+        cfgs, text_processor, dp_ort, text_enc_ort, vector_est_ort, vocoder_ort
+    )
+
+
+def load_voice_style(voice_style_paths: list[str], verbose: bool = False) -> Style:
+    bsz = len(voice_style_paths)
+
+    # Read first file to get dimensions
+    with open(voice_style_paths[0], "r") as f:
+        first_style = json.load(f)
+    ttl_dims = first_style["style_ttl"]["dims"]
+    dp_dims = first_style["style_dp"]["dims"]
+
+    # Pre-allocate arrays with full batch size
+    ttl_style = np.zeros([bsz, ttl_dims[1], ttl_dims[2]], dtype=np.float32)
+    dp_style = np.zeros([bsz, dp_dims[1], dp_dims[2]], dtype=np.float32)
+
+    # Fill in the data
+    for i, voice_style_path in enumerate(voice_style_paths):
+        with open(voice_style_path, "r") as f:
+            voice_style = json.load(f)
+
+        ttl_data = np.array(
+            voice_style["style_ttl"]["data"], dtype=np.float32
+        ).flatten()
+        ttl_style[i] = ttl_data.reshape(ttl_dims[1], ttl_dims[2])
+
+        dp_data = np.array(voice_style["style_dp"]["data"], dtype=np.float32).flatten()
+        dp_style[i] = dp_data.reshape(dp_dims[1], dp_dims[2])
+
+    if verbose:
+        print(f"Loaded {bsz} voice styles")
+    return Style(ttl_style, dp_style)
+
+
+@contextmanager
+def timer(name: str):
+    start = time.time()
+    print(f"{name}...")
+    yield
+    print(f"  -> {name} completed in {time.time() - start:.2f} sec")
+
+
+def sanitize_filename(text: str, max_len: int) -> str:
+    """Sanitize filename by replacing non-alphanumeric characters with underscores (supports Unicode)"""
+    import re
+
+    prefix = text[:max_len]
+    # \w matches Unicode word characters (letters, digits, underscore) with re.UNICODE
+    # We replace non-word characters except keeping existing underscores
+    return re.sub(r"[^\w]", "_", prefix, flags=re.UNICODE)
+
+
+def chunk_text(text: str, max_len: int = 300) -> list[str]:
+    """
+    Split text into chunks by paragraphs and sentences.
+
+    Args:
+        text: Input text to chunk
+        max_len: Maximum length of each chunk (default: 300)
+
+    Returns:
+        List of text chunks
+    """
+    import re
+
+    # Split by paragraph (two or more newlines)
+    paragraphs = [p.strip() for p in re.split(r"\n\s*\n+", text.strip()) if p.strip()]
+
+    chunks = []
+
+    for paragraph in paragraphs:
+        paragraph = paragraph.strip()
+        if not paragraph:
+            continue
+
+        # Split by sentence boundaries (period, question mark, exclamation mark followed by space)
+        # But exclude common abbreviations like Mr., Mrs., Dr., etc. and single capital letters like F.
+        pattern = r"(?<!Mr\.)(?<!Mrs\.)(?<!Ms\.)(?<!Dr\.)(?<!Prof\.)(?<!Sr\.)(?<!Jr\.)(?<!Ph\.D\.)(?<!etc\.)(?<!e\.g\.)(?<!i\.e\.)(?<!vs\.)(?<!Inc\.)(?<!Ltd\.)(?<!Co\.)(?<!Corp\.)(?<!St\.)(?<!Ave\.)(?<!Blvd\.)(?<!\b[A-Z]\.)(?<=[.!?])\s+"
+        sentences = re.split(pattern, paragraph)
+
+        current_chunk = ""
+
+        for sentence in sentences:
+            if len(current_chunk) + len(sentence) + 1 <= max_len:
+                current_chunk += (" " if current_chunk else "") + sentence
+            else:
+                if current_chunk:
+                    chunks.append(current_chunk.strip())
+                current_chunk = sentence
+
+        if current_chunk:
+            chunks.append(current_chunk.strip())
+
+    return chunks