3 Commits

Author SHA1 Message Date
gx afc2dd7fff python: DLPack + health stats + CUDA stream + docs (tasks #199-#202)
build / cmake build (CUDA 12.4, Ubuntu 22.04) (pull_request) Failing after 1m50s
build / ffmpeg filter patch (out-of-tree) (pull_request) Has been skipped
#199 DLPack export:
- frame.dlpack_y() / .dlpack_uv() — explicit multi-plane access для NV12
- frame.__dlpack__() / __dlpack_device__() — protocol для torch/cupy
- Capsule deleter правильно держит refcount на frame_keep_alive,
  releases shape/strides arrays. CUDA pointer принадлежит frame.

#200 Health/stats counters:
- frames_received, timeouts, errors — per-call counters
- last_seq, gap_count — proxy для drop count (NEWEST_ONLY mode)
- last_frame_pts_ns
- stats() — snapshot dict для MQTT health publish
- counted в pybind layer т.к. C API не expose'ит ring_occupancy

#201 Per-subscriber CUDA stream + thread-safety:
- consumer_stream kwarg в subscribe() — int (cudaStream_t pointer)
- subscriber.consumer_stream property
- Thread-safety contract в docstring CuframesSubscriber
- next_frame() передаёт consumer_stream_ в cuframes_subscriber_next

#202 Smoke test + docs:
- 10/10 pytest passed (расширен +2 теста на consumer_stream)
- docs/python.md (~250 строк): quick start, API reference, integration
  с PyTorch/CuPy, reconnect-loop pattern, per-stream usage,
  pitch alignment, thread-safety, error taxonomy, backpressure,
  Phase 0 limitations

Verify build + tests:
  cmake -B build-python -DBUILD_PYTHON_BINDINGS=ON
  cmake --build build-python -j
  pytest python/tests/ -v   # 10/10

Закрывает Phase 0 issue gx/cuframes#6.
Разблокирует goldix-smart-home/yolo-world-detector Phase 1.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-06-13 21:33:21 +01:00
gx 5d1eaedb38 python: CuframesSubscriber + CuframesFrame wrapper (task #198)
Реализует subscriber-side wrapper над cuframes_subscriber_* и
cuframes_frame_* C API.

Что добавлено:
- CuframesFrame — owning RAII wrapper над cuframes_frame_t*
  - properties: cuda_ptr, format, width, height, pitch_y, pitch_uv,
    seq, pts_ns, released
  - release() idempotent
  - context manager (__enter__/__exit__) — release при выходе
  - после release() property access бросает CuframesError

- CuframesSubscriber — owning RAII wrapper над cuframes_subscriber_t*
  - конструктор с key/consumer_name/mode/cuda_device/connect_timeout_ms
  - next_frame(timeout_ms) → CuframesFrame
  - close() idempotent
  - context manager
  - GIL released на блокирующих вызовах (create, next_frame)

- subscribe() — module-level factory shortcut

Архитектурные решения:
- GIL release в py::gil_scoped_release на subscriber_create и _next —
  чтобы другие Python потоки могли работать пока ждём frame
- consumer_stream передаётся как nullptr в Phase 0 (default stream);
  per-subscriber stream в task #201
- Frame держит raw pointer на subscriber, refcount Python-стороной;
  если subscriber уничтожен раньше, frame.release() становится no-op

Smoke tests расширены до 8 — добавлены проверки exposed API и
error mapping на subscribe к несуществующему publisher'у.

Verify: pytest tests/test_smoke.py — 8/8 passed.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-06-13 21:23:42 +01:00
gx a7da4ea728 python: skeleton pybind11 bindings (issue #6 task #197)
Каркас Python-пакета `cuframes`:
- python/pyproject.toml — scikit-build-core конфиг
- python/CMakeLists.txt — pybind11 module через FetchContent
- python/src/_native.cpp — module entry, error таксономия,
  enum mirrors (PixelFormat, SubscriberMode), version
- python/cuframes/__init__.py — re-export публичного API
- python/tests/test_smoke.py — smoke tests без real subscribe
- python/README.md — статус + build instructions
- CMakeLists.txt — подключение python/ при BUILD_PYTHON_BINDINGS=ON

Реальный subscriber/frame wrapper в следующих коммитах
(tasks #198-#202).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-06-13 12:59:04 +01:00