polyvoice 0.6.0

Speaker diarization library for Rust — online and offline, ONNX-powered, ecosystem-agnostic
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147

---
schema_version: 1
kind: module_contract
module: src/embedder
level: subsystem
layer: algorithm
purpose: >
  Owns the Embedder trait, overlap masking, embedder pooling, and ONNX-backed
  adapter implementations (CAM++, ResNet34). Does NOT own feature extraction
  (features.rs) or clustering.
status: stable
owners:
  - polyvoice-core
workcell:
  type: leaf
  parent: ""
  children: []
  owns_paths:
    - src/embedder/
  context_budget:
    max_files: 12
    max_source_lines: 1500
    max_contract_lines: 180
    max_readme_lines: 120
    max_todo_lines: 80
authority:
  write_policy: single_active_write_lease
  orchestrator: polyvoice-core
  read_agents: many_allowed
  migration_lease_required:
    - cross-workcell write
    - public surface migration
surface:
  - name: Embedder
    kind: trait
    visibility: public
    contract: >
      Core embedder trait: extract speaker embedding from audio samples.
    proof:
      kind: unit-test
      target: src/embedder::mod::tests
      command: cargo test --lib embedder
  - name: EmbedderError
    kind: enum
    visibility: public
    contract: >
      Error type for embedder operations.
    proof:
      kind: unit-test
      target: src/embedder::mod::tests
      command: cargo test --lib embedder
  - name: EmbedderPool
    kind: struct
    visibility: public
    contract: >
      Lock-free pool of Embedder instances using crossbeam-queue.
    proof:
      kind: unit-test
      target: src/embedder::mod::tests
      command: cargo test --lib embedder
  - name: apply_overlap_mask
    kind: function
    visibility: public
    contract: >
      Masks embedding regions that overlap with multiple speakers.
    proof:
      kind: unit-test
      target: src/embedder::mod::tests
      command: cargo test --lib embedder
  - name: CamPlusPlusExtractor
    kind: struct
    visibility: public
    contract: >
      ONNX-backed CAM++ embedding extractor.
    proof:
      kind: integration-test
      target: tests/embedder_test.rs
      command: cargo test --test embedder_test --features onnx
  - name: ResNet34Adapter
    kind: struct
    visibility: public
    contract: >
      ONNX-backed ResNet34 adapter wrapping FbankOnnxExtractor.
    proof:
      kind: integration-test
      target: tests/embedder_test.rs
      command: cargo test --test embedder_test --features onnx
dependencies:
  internal: []
  external:
    - name: ort
      scope: ml-runtime
      reason: ONNX inference for CAM++ and ResNet34 adapters.
    - name: crossbeam-queue
      scope: concurrency
      reason: Lock-free queue for EmbedderPool.
consumers:
  - path: .
    uses:
      - Embedder
      - EmbedderError
      - EmbedderPool
      - apply_overlap_mask
      - CamPlusPlusExtractor
      - ResNet34Adapter
      - ort
      - crossbeam-queue
      - polyvoice_internal
invariants:
  - id: embedder-output-normalized
    rule: Embedder implementations must output L2-normalized embeddings
      (convention; enforced by adapters).
    proof:
      kind: integration-test
      target: tests/embedder_test.rs
      command: cargo test --test embedder_test --features onnx
  - id: pool-safe-concurrent-access
    rule: EmbedderPool is safe for concurrent pop/push without data races.
    proof:
      kind: unit-test
      target: tests/loom_pool.rs
      command: cargo test --test loom_pool
verification:
  pre_change:
    - cargo test --lib embedder
  full:
    - cargo test --lib embedder
    - cargo test --test embedder_test --features onnx
    - cargo test --test loom_pool
    - cargo clippy --all-targets --all-features -- -D warnings
agent_policy:
  allowed_mutations:
    - Adding new Embedder implementations.
    - Optimizing overlap mask logic.
    - Pool sizing heuristics.
  forbidden_mutations:
    - Removing the Embedder trait without migration lease.
    - Changing Embedder::extract signature.
    - Removing L2 normalization from adapters.
  escalation:
    - Changes to Embedder trait or its associated types.
    - Adding new execution provider wiring that changes public API.
---

# src/embedder

Embedder trait, overlap masking, embedder pooling, and ONNX-backed adapters.