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Duplicate from hypaai/Hypa-Orpheus-Step-latest-16bit

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Co-authored-by: Hypa-Intelligence <hypaai@users.noreply.huggingface.co>

.gitattributes ADDED
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+ *.7z filter=lfs diff=lfs merge=lfs -text
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+ *.arrow filter=lfs diff=lfs merge=lfs -text
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+ *.bin filter=lfs diff=lfs merge=lfs -text
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+ *.bz2 filter=lfs diff=lfs merge=lfs -text
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+ *.ckpt filter=lfs diff=lfs merge=lfs -text
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+ *.ftz filter=lfs diff=lfs merge=lfs -text
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+ *.gz filter=lfs diff=lfs merge=lfs -text
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+ *.h5 filter=lfs diff=lfs merge=lfs -text
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+ *.joblib filter=lfs diff=lfs merge=lfs -text
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+ *.lfs.* filter=lfs diff=lfs merge=lfs -text
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+ *.mlmodel filter=lfs diff=lfs merge=lfs -text
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+ *.model filter=lfs diff=lfs merge=lfs -text
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+ *.msgpack filter=lfs diff=lfs merge=lfs -text
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+ *.npy filter=lfs diff=lfs merge=lfs -text
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+ *.npz filter=lfs diff=lfs merge=lfs -text
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+ *.onnx filter=lfs diff=lfs merge=lfs -text
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+ *.ot filter=lfs diff=lfs merge=lfs -text
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+ *.parquet filter=lfs diff=lfs merge=lfs -text
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+ *.pb filter=lfs diff=lfs merge=lfs -text
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+ *.pickle filter=lfs diff=lfs merge=lfs -text
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+ *.pkl filter=lfs diff=lfs merge=lfs -text
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+ *.pt filter=lfs diff=lfs merge=lfs -text
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+ *.pth filter=lfs diff=lfs merge=lfs -text
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+ *.rar filter=lfs diff=lfs merge=lfs -text
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+ *.safetensors filter=lfs diff=lfs merge=lfs -text
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+ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
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+ *.tar.* filter=lfs diff=lfs merge=lfs -text
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+ *.tar filter=lfs diff=lfs merge=lfs -text
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+ *.tflite filter=lfs diff=lfs merge=lfs -text
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+ *.tgz filter=lfs diff=lfs merge=lfs -text
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+ *.wasm filter=lfs diff=lfs merge=lfs -text
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+ *.xz filter=lfs diff=lfs merge=lfs -text
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+ *.zip filter=lfs diff=lfs merge=lfs -text
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+ *.zst filter=lfs diff=lfs merge=lfs -text
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+ *tfevents* filter=lfs diff=lfs merge=lfs -text
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+ tokenizer.json filter=lfs diff=lfs merge=lfs -text
README.md ADDED
@@ -0,0 +1,21 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ ---
2
+ base_model: unsloth/orpheus-3b-0.1-ft-unsloth-bnb-4bit
3
+ tags:
4
+ - text-generation-inference
5
+ - transformers
6
+ - unsloth
7
+ - llama
8
+ license: apache-2.0
9
+ language:
10
+ - en
11
+ ---
12
+
13
+ # Uploaded finetuned model
14
+
15
+ - **Developed by:** hypaai
16
+ - **License:** apache-2.0
17
+ - **Finetuned from model :** unsloth/orpheus-3b-0.1-ft-unsloth-bnb-4bit
18
+
19
+ This llama model was trained 2x faster with [Unsloth](https://github.com/unslothai/unsloth) and Huggingface's TRL library.
20
+
21
+ [<img src="https://raw.githubusercontent.com/unslothai/unsloth/main/images/unsloth%20made%20with%20love.png" width="200"/>](https://github.com/unslothai/unsloth)
chat_template.jinja ADDED
@@ -0,0 +1,93 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ {{- bos_token }}
2
+ {%- if custom_tools is defined %}
3
+ {%- set tools = custom_tools %}
4
+ {%- endif %}
5
+ {%- if not tools_in_user_message is defined %}
6
+ {%- set tools_in_user_message = true %}
7
+ {%- endif %}
8
+ {%- if not date_string is defined %}
9
+ {%- if strftime_now is defined %}
10
+ {%- set date_string = strftime_now("%d %b %Y") %}
11
+ {%- else %}
12
+ {%- set date_string = "26 Jul 2024" %}
13
+ {%- endif %}
14
+ {%- endif %}
15
+ {%- if not tools is defined %}
16
+ {%- set tools = none %}
17
+ {%- endif %}
18
+
19
+ {#- This block extracts the system message, so we can slot it into the right place. #}
20
+ {%- if messages[0]['role'] == 'system' %}
21
+ {%- set system_message = messages[0]['content']|trim %}
22
+ {%- set messages = messages[1:] %}
23
+ {%- else %}
24
+ {%- set system_message = "" %}
25
+ {%- endif %}
26
+
27
+ {#- System message #}
28
+ {{- "<|start_header_id|>system<|end_header_id|>\n\n" }}
29
+ {%- if tools is not none %}
30
+ {{- "Environment: ipython\n" }}
31
+ {%- endif %}
32
+ {{- "Cutting Knowledge Date: December 2023\n" }}
33
+ {{- "Today Date: " + date_string + "\n\n" }}
34
+ {%- if tools is not none and not tools_in_user_message %}
35
+ {{- "You have access to the following functions. To call a function, please respond with JSON for a function call." }}
36
+ {{- 'Respond in the format {"name": function name, "parameters": dictionary of argument name and its value}.' }}
37
+ {{- "Do not use variables.\n\n" }}
38
+ {%- for t in tools %}
39
+ {{- t | tojson(indent=4) }}
40
+ {{- "\n\n" }}
41
+ {%- endfor %}
42
+ {%- endif %}
43
+ {{- system_message }}
44
+ {{- "<|eot_id|>" }}
45
+
46
+ {#- Custom tools are passed in a user message with some extra guidance #}
47
+ {%- if tools_in_user_message and not tools is none %}
48
+ {#- Extract the first user message so we can plug it in here #}
49
+ {%- if messages | length != 0 %}
50
+ {%- set first_user_message = messages[0]['content']|trim %}
51
+ {%- set messages = messages[1:] %}
52
+ {%- else %}
53
+ {{- raise_exception("Cannot put tools in the first user message when there's no first user message!") }}
54
+ {%- endif %}
55
+ {{- '<|start_header_id|>user<|end_header_id|>\n\n' -}}
56
+ {{- "Given the following functions, please respond with a JSON for a function call " }}
57
+ {{- "with its proper arguments that best answers the given prompt.\n\n" }}
58
+ {{- 'Respond in the format {"name": function name, "parameters": dictionary of argument name and its value}.' }}
59
+ {{- "Do not use variables.\n\n" }}
60
+ {%- for t in tools %}
61
+ {{- t | tojson(indent=4) }}
62
+ {{- "\n\n" }}
63
+ {%- endfor %}
64
+ {{- first_user_message + "<|eot_id|>"}}
65
+ {%- endif %}
66
+
67
+ {%- for message in messages %}
68
+ {%- if not (message.role == 'ipython' or message.role == 'tool' or 'tool_calls' in message) %}
69
+ {{- '<|start_header_id|>' + message['role'] + '<|end_header_id|>\n\n'+ message['content'] | trim + '<|eot_id|>' }}
70
+ {%- elif 'tool_calls' in message %}
71
+ {%- if not message.tool_calls|length == 1 %}
72
+ {{- raise_exception("This model only supports single tool-calls at once!") }}
73
+ {%- endif %}
74
+ {%- set tool_call = message.tool_calls[0].function %}
75
+ {{- '<|start_header_id|>assistant<|end_header_id|>\n\n' -}}
76
+ {{- '{"name": "' + tool_call.name + '", ' }}
77
+ {{- '"parameters": ' }}
78
+ {{- tool_call.arguments | tojson }}
79
+ {{- "}" }}
80
+ {{- "<|eot_id|>" }}
81
+ {%- elif message.role == "tool" or message.role == "ipython" %}
82
+ {{- "<|start_header_id|>ipython<|end_header_id|>\n\n" }}
83
+ {%- if message.content is mapping or message.content is iterable %}
84
+ {{- message.content | tojson }}
85
+ {%- else %}
86
+ {{- message.content }}
87
+ {%- endif %}
88
+ {{- "<|eot_id|>" }}
89
+ {%- endif %}
90
+ {%- endfor %}
91
+ {%- if add_generation_prompt %}
92
+ {{- '<|start_header_id|>assistant<|end_header_id|>\n\n' }}
93
+ {%- endif %}
config.json ADDED
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+ {
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+ "architectures": [
3
+ "LlamaForCausalLM"
4
+ ],
5
+ "attention_bias": false,
6
+ "attention_dropout": 0.0,
7
+ "bos_token_id": 128000,
8
+ "torch_dtype": "bfloat16",
9
+ "eos_token_id": 128009,
10
+ "head_dim": 128,
11
+ "hidden_act": "silu",
12
+ "hidden_size": 3072,
13
+ "initializer_range": 0.02,
14
+ "intermediate_size": 8192,
15
+ "max_position_embeddings": 131072,
16
+ "mlp_bias": false,
17
+ "model_type": "llama",
18
+ "num_attention_heads": 24,
19
+ "num_hidden_layers": 28,
20
+ "num_key_value_heads": 8,
21
+ "pad_token_id": 128004,
22
+ "pretraining_tp": 1,
23
+ "rms_norm_eps": 1e-05,
24
+ "rope_parameters": {
25
+ "factor": 32.0,
26
+ "high_freq_factor": 4.0,
27
+ "low_freq_factor": 1.0,
28
+ "original_max_position_embeddings": 8192,
29
+ "rope_theta": 500000.0,
30
+ "rope_type": "llama3"
31
+ },
32
+ "tie_word_embeddings": true,
33
+ "unsloth_fixed": true,
34
+ "unsloth_version": "2026.7.3",
35
+ "use_cache": true,
36
+ "vocab_size": 156940
37
+ }
generation_config.json ADDED
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1
+ {
2
+ "_from_model_config": true,
3
+ "bos_token_id": 128000,
4
+ "do_sample": true,
5
+ "eos_token_id": 128009,
6
+ "max_length": 131072,
7
+ "pad_token_id": 128004,
8
+ "temperature": 0.6,
9
+ "top_p": 0.9,
10
+ "transformers_version": "5.13.1"
11
+ }
handler.py ADDED
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1
+ """
2
+ HF Inference Endpoint handler — Hypa Orpheus TTS + Voice Cloning (merged 16-bit).
3
+
4
+ Task matrix (routed by `parameters`):
5
+ task="tts", mode="vanilla" : {speaker}: text -> speech
6
+ task="tts", mode="translate" : {speaker} - {Language}: text -> speech in Language
7
+ task="vc", mode="vanilla" : reference (text+audio) + target text -> speech in reference voice
8
+ task="vc", mode="translate" : + language tag on target text -> cross-lingual cloning
9
+ VC method="m1" (in-context) | method="m2" (continue-speaking)
10
+
11
+ Output parity with the legacy endpoint: `audio_b64` is base64 of the RAW
12
+ float32 little-endian mono PCM buffer at 24000 Hz (NO WAV/RIFF container),
13
+ so existing products decode with: np.frombuffer(base64.b64decode(s), dtype=np.int16)
14
+ [If the legacy endpoint used int16, change RAW_DTYPE to np.int16 below.]
15
+
16
+ Prompts are byte-identical to Step-III training (_encode_text / build_tts /
17
+ build_vc_both), reference codes are frame-deduped, and prompts reach vLLM as
18
+ token ids (never a decoded string).
19
+ """
20
+
21
+ import io
22
+ import os
23
+ import base64
24
+ import tempfile
25
+ import traceback
26
+
27
+ import numpy as np
28
+ import torch
29
+ import soundfile as sf
30
+ import librosa
31
+
32
+ from transformers import AutoTokenizer
33
+ from snac import SNAC
34
+ from vllm import LLM, SamplingParams
35
+
36
+
37
+ class EndpointHandler:
38
+ # ---- Orpheus special tokens (fixed by the model) ----
39
+ TOKENISER_LEN = 128256
40
+ START_OF_TEXT = 128000
41
+ END_OF_TEXT = 128009
42
+ START_OF_SPEECH = TOKENISER_LEN + 1 # 128257
43
+ END_OF_SPEECH = TOKENISER_LEN + 2 # 128258
44
+ START_OF_HUMAN = TOKENISER_LEN + 3 # 128259
45
+ END_OF_HUMAN = TOKENISER_LEN + 4 # 128260
46
+ START_OF_AI = TOKENISER_LEN + 5 # 128261
47
+ END_OF_AI = TOKENISER_LEN + 6 # 128262
48
+ AUDIO_OFFSET = 128266
49
+
50
+ # NOTE: fine-tune data capped at 2048 tokens; 4096 kept so M1-VC prompts
51
+ # (ref codes + two texts, often 1000-2000 tokens) retain a generation
52
+ # budget. Base Llama-3 RoPE supports these positions natively; expect the
53
+ # best quality when prompt+generation stays near the trained ~2048.
54
+ MAX_MODEL_LEN = 4096
55
+ MAX_REF_SECONDS = 30
56
+ SNAC_SR = 24000
57
+ RAW_DTYPE = np.int16 # legacy raw-PCM dtype (see docstring)
58
+
59
+ LANG_DISPLAY = {
60
+ "en": "English", "es": "Spanish", "fr": "French", "ha": "Hausa",
61
+ "yo": "Yoruba", "sw": "Swahili", "ar": "Arabic", "pt": "Portuguese",
62
+ "ann": "Annang", "ebi": "Ebira", "efi": "Efik", "ego": "Eggon",
63
+ "urh": "Urhobo", "ibb": "Ibibio", "idm": "Idoma", "igl": "Igala",
64
+ "ig": "Igbo", "nup": "Nupe", "tiv": "Tiv", "pg": "Pidgin",
65
+ }
66
+
67
+ # ------------------------------------------------------------------ init
68
+ def __init__(self, path=""):
69
+ self.device = "cuda" if torch.cuda.is_available() else "cpu"
70
+ # SNAC first (tiny, ~80 MB) so it never contends with vLLM's reservation.
71
+ self.snac = SNAC.from_pretrained("hubertsiuzdak/snac_24khz").to(self.device).eval()
72
+ self.model = LLM(
73
+ path,
74
+ max_model_len=self.MAX_MODEL_LEN,
75
+ gpu_memory_utilization=0.75,
76
+ )
77
+ self.tokenizer = AutoTokenizer.from_pretrained(path)
78
+
79
+ # ------------------------------------------------------- text encoding
80
+ def _lang_display(self, x):
81
+ if x is None:
82
+ return None
83
+ k = str(x).strip().lower()
84
+ return self.LANG_DISPLAY.get(k, k.capitalize() if k else None)
85
+
86
+ def _encode_text(self, text, speaker=None, lang_tag=None, add_bos=True):
87
+ text = "" if text is None else str(text).strip()
88
+ spk = speaker if (speaker and str(speaker).strip().lower() not in ("", "random", "none")) else None
89
+ if spk and lang_tag:
90
+ prompt = f"{spk} - {lang_tag}: {text}"
91
+ elif spk:
92
+ prompt = f"{spk}: {text}"
93
+ elif lang_tag:
94
+ prompt = f"{lang_tag}: {text}"
95
+ else:
96
+ prompt = text
97
+ ids = self.tokenizer.encode(prompt, add_special_tokens=add_bos)
98
+ ids.append(self.END_OF_TEXT)
99
+ return ids
100
+
101
+ # ------------------------------------------------------ audio encoding
102
+ def _b64_to_wave(self, b64_str):
103
+ raw = base64.b64decode(b64_str)
104
+ if not raw:
105
+ raise ValueError("reference_audio is empty.")
106
+ try:
107
+ arr, sr = sf.read(io.BytesIO(raw), dtype="float32")
108
+ except Exception:
109
+ # temp-file fallback: librosa/audioread handles containers
110
+ # libsndfile can't open, but needs a real file path for some codecs.
111
+ tmp = None
112
+ try:
113
+ with tempfile.NamedTemporaryFile(delete=False, suffix=".audio") as f:
114
+ f.write(raw)
115
+ tmp = f.name
116
+ arr, sr = librosa.load(tmp, sr=None, mono=False)
117
+ arr = np.asarray(arr, dtype=np.float32)
118
+ if arr.ndim > 1:
119
+ arr = arr.T # librosa returns (ch, n)
120
+ finally:
121
+ if tmp and os.path.exists(tmp):
122
+ os.remove(tmp)
123
+ if arr.ndim > 1:
124
+ arr = arr.mean(axis=1)
125
+ if arr.size == 0 or not np.isfinite(arr).all():
126
+ raise ValueError("Reference audio is empty or contains invalid samples.")
127
+ if sr != self.SNAC_SR:
128
+ arr = librosa.resample(arr.astype(np.float32), orig_sr=sr, target_sr=self.SNAC_SR)
129
+ dur = len(arr) / self.SNAC_SR
130
+ if dur > self.MAX_REF_SECONDS:
131
+ raise ValueError(f"Reference audio is {dur:.1f}s; max is {self.MAX_REF_SECONDS}s. "
132
+ f"Send a shorter clip.")
133
+ return arr.astype(np.float32)
134
+
135
+ @torch.inference_mode()
136
+ def _audio_to_codes(self, arr):
137
+ wav = torch.from_numpy(arr).to(self.device)[None, None]
138
+ codes = self.snac.encode(wav)
139
+ c0, c1, c2 = codes[0][0].tolist(), codes[1][0].tolist(), codes[2][0].tolist()
140
+ n = min(len(c0), len(c1) // 2, len(c2) // 4)
141
+ out = []
142
+ for i in range(n):
143
+ out += [
144
+ c0[i] + self.AUDIO_OFFSET,
145
+ c1[2 * i] + self.AUDIO_OFFSET + 4096,
146
+ c2[4 * i] + self.AUDIO_OFFSET + 2 * 4096,
147
+ c2[4 * i + 1] + self.AUDIO_OFFSET + 3 * 4096,
148
+ c1[2 * i + 1] + self.AUDIO_OFFSET + 4 * 4096,
149
+ c2[4 * i + 2] + self.AUDIO_OFFSET + 5 * 4096,
150
+ c2[4 * i + 3] + self.AUDIO_OFFSET + 6 * 4096,
151
+ ]
152
+ return out
153
+
154
+ @staticmethod
155
+ def _dedup_frames(codes):
156
+ if not codes:
157
+ return codes
158
+ codes = codes[: (len(codes) // 7) * 7]
159
+ if len(codes) < 7:
160
+ return codes
161
+ result = codes[:7]
162
+ for i in range(7, len(codes), 7):
163
+ if codes[i] != result[-7]:
164
+ result.extend(codes[i:i + 7])
165
+ return result
166
+
167
+ # ------------------------------------------------------ prompt builders
168
+ def build_tts_prompt(self, text, speaker, mode, language):
169
+ lang_tag = self._lang_display(language) if mode == "translate" else None
170
+ tt = self._encode_text(text, speaker, lang_tag, add_bos=True)
171
+ return [self.START_OF_HUMAN] + tt + [self.END_OF_HUMAN,
172
+ self.START_OF_AI, self.START_OF_SPEECH]
173
+
174
+ def build_vc_prompt(self, ref_text, ref_codes, target_text, mode, language, method):
175
+ tag2 = self._lang_display(language) if mode == "translate" else None
176
+ tt1 = self._encode_text(ref_text, None, None, add_bos=True)
177
+ tt2 = self._encode_text(target_text, None, tag2, add_bos=False)
178
+ if method == "m1":
179
+ return ([self.START_OF_HUMAN] + tt1 + [self.END_OF_HUMAN,
180
+ self.START_OF_AI, self.START_OF_SPEECH] + ref_codes +
181
+ [self.END_OF_SPEECH, self.END_OF_AI,
182
+ self.START_OF_HUMAN] + tt2 + [self.END_OF_HUMAN,
183
+ self.START_OF_AI, self.START_OF_SPEECH])
184
+ return ([self.START_OF_HUMAN] + tt1 + tt2 + [self.END_OF_HUMAN,
185
+ self.START_OF_AI, self.START_OF_SPEECH] + ref_codes)
186
+
187
+ # --------------------------------------------------------- generation
188
+ def _generate(self, prompt_ids, params):
189
+ sampling = SamplingParams(
190
+ temperature = params["temperature"],
191
+ top_p = params["top_p"],
192
+ top_k = params["top_k"],
193
+ max_tokens = params["max_new_tokens"],
194
+ repetition_penalty = params["repetition_penalty"],
195
+ stop_token_ids = [self.END_OF_SPEECH, self.END_OF_AI],
196
+ detokenize = False,
197
+ )
198
+ outputs = self.model.generate({"prompt_token_ids": prompt_ids}, sampling)
199
+ return list(outputs[0].outputs[0].token_ids)
200
+
201
+ # ----------------------------------------------------------- decoding
202
+ @torch.inference_mode()
203
+ def _codes_to_wave(self, gen_ids):
204
+ """Frame-validating SNAC decode: accepts only well-formed 7-token frames
205
+ (token k in slot-k range), resyncs on malformed spans."""
206
+ frames, i, n, resyncs = [], 0, len(gen_ids), 0
207
+ while i <= n - 7:
208
+ vals, ok = [], True
209
+ for k in range(7):
210
+ lo = self.AUDIO_OFFSET + k * 4096
211
+ t = gen_ids[i + k]
212
+ if not (lo <= t < lo + 4096):
213
+ ok = False
214
+ break
215
+ vals.append(t - lo)
216
+ if ok:
217
+ frames.append(vals)
218
+ i += 7
219
+ else:
220
+ i += 1
221
+ resyncs += 1
222
+ self._last_resyncs = resyncs
223
+ if not frames:
224
+ return None, 0
225
+ l1 = [f[0] for f in frames]
226
+ l2, l3 = [], []
227
+ for f in frames:
228
+ l2.append(f[1]); l3.append(f[2]); l3.append(f[3])
229
+ l2.append(f[4]); l3.append(f[5]); l3.append(f[6])
230
+ tensors = [
231
+ torch.tensor(l1)[None].to(self.device),
232
+ torch.tensor(l2)[None].to(self.device),
233
+ torch.tensor(l3)[None].to(self.device),
234
+ ]
235
+ wav = self.snac.decode(tensors).squeeze().detach().cpu().numpy()
236
+ return wav, len(frames)
237
+
238
+ def _wave_to_b64_raw(self, wav):
239
+ """Legacy parity: base64 of raw little-endian PCM buffer, no container."""
240
+ return base64.b64encode(
241
+ np.ascontiguousarray(wav.astype(self.RAW_DTYPE)).tobytes()
242
+ ).decode("utf-8")
243
+
244
+ # -------------------------------------------------------------- entry
245
+ def __call__(self, data):
246
+ try:
247
+ target_text = data.get("inputs")
248
+ if not target_text:
249
+ return {"error": "Missing 'inputs' (target text)."}
250
+
251
+ p = data.get("parameters", {}) or {}
252
+ task = str(p.get("task", "tts")).lower()
253
+ mode = str(p.get("mode", "vanilla")).lower()
254
+ method = str(p.get("method", "m2")).lower()
255
+ if mode in ("translation", "trans"):
256
+ mode = "translate"
257
+
258
+ if task not in ("tts", "vc"):
259
+ return {"error": "parameters.task must be 'tts' or 'vc'."}
260
+ if mode not in ("vanilla", "translate"):
261
+ return {"error": "parameters.mode must be 'vanilla' or 'translate'."}
262
+ if mode == "translate" and not p.get("language"):
263
+ return {"error": "parameters.language is required for translate mode."}
264
+
265
+ gen_params = {
266
+ "temperature": float(p.get("temperature", 0.6)),
267
+ "top_p": float(p.get("top_p", 0.95)),
268
+ "top_k": int(p.get("top_k", 50)),
269
+ "max_new_tokens": int(p.get("max_new_tokens", 1200)),
270
+ "repetition_penalty": float(p.get("repetition_penalty", 1.1)),
271
+ }
272
+ if not 0 < gen_params["top_p"] <= 1:
273
+ return {"error": "top_p must be within (0, 1]."}
274
+ if not (gen_params["top_k"] == -1 or gen_params["top_k"] > 0):
275
+ return {"error": "top_k must be -1 (disabled) or a positive integer."}
276
+ if not 0 < gen_params["repetition_penalty"] <= 2:
277
+ return {"error": "repetition_penalty must be within (0, 2]."}
278
+ if gen_params["max_new_tokens"] <= 0:
279
+ return {"error": "max_new_tokens must be positive."}
280
+
281
+ if task == "vc":
282
+ ref_text = p.get("reference_text")
283
+ ref_audio = p.get("reference_audio")
284
+ if not ref_text or not ref_audio:
285
+ return {"error": "VC requires parameters.reference_text and "
286
+ "parameters.reference_audio (base64)."}
287
+ if method not in ("m1", "m2"):
288
+ return {"error": "parameters.method must be 'm1' or 'm2'."}
289
+ ref_wave = self._b64_to_wave(ref_audio)
290
+ ref_codes = self._dedup_frames(self._audio_to_codes(ref_wave))
291
+ if not ref_codes:
292
+ return {"error": "Reference audio produced no SNAC codes."}
293
+ prompt_ids = self.build_vc_prompt(
294
+ ref_text, ref_codes, target_text, mode, p.get("language"), method)
295
+ else:
296
+ prompt_ids = self.build_tts_prompt(
297
+ target_text, p.get("voice") or p.get("speaker"),
298
+ mode, p.get("language"))
299
+
300
+ budget = self.MAX_MODEL_LEN - gen_params["max_new_tokens"]
301
+ if len(prompt_ids) > budget:
302
+ return {"error": f"Prompt is {len(prompt_ids)} tokens; exceeds budget "
303
+ f"{budget} (max_model_len - max_new_tokens). "
304
+ f"Shorten the reference clip or text."}
305
+
306
+ gen_ids = self._generate(prompt_ids, gen_params)
307
+ wav, n_frames = self._codes_to_wave(gen_ids)
308
+ if wav is None:
309
+ return {"error": "Model generated no audio tokens.",
310
+ "input_tokens": len(prompt_ids),
311
+ "generated_tokens": len(gen_ids)}
312
+
313
+ return {
314
+ "audio_b64": self._wave_to_b64_raw(wav), # RAW float32 PCM (legacy parity)
315
+ "audio_dtype": np.dtype(self.RAW_DTYPE).name,
316
+ "sample_rate": self.SNAC_SR,
317
+ "duration_seconds": round(len(wav) / self.SNAC_SR, 3),
318
+ "audio_frames": n_frames,
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+ "input_tokens": len(prompt_ids),
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+ "generated_tokens": len(gen_ids),
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+ "task": task, "mode": mode,
322
+ "method": method if task == "vc" else None,
323
+ "decode_resyncs": getattr(self, "_last_resyncs", 0),
324
+ }
325
+
326
+ except ValueError as e:
327
+ return {"error": str(e)}
328
+ except Exception as e:
329
+ traceback.print_exc()
330
+ return {"error": str(e)}
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