forked from dsutanto/bytetrack-counter-cpp
36 lines
955 B
Markdown
36 lines
955 B
Markdown
# AGENTS.md — ByteTrack Counter C++
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## RKNN Dynamic Shape Requirement
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The RKNN model (`zenai_apc_cicalengka_20260609.rknn`) is exported with **dynamic input shapes** (`model inference type: dynamic_shape`). The C API **requires** calling `rknn_set_input_shapes()` before `rknn_inputs_set()`. Without it, `librknnrt.so` crashes with:
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```
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std::out_of_range: vector::_M_range_check: __n (which is 18446744073709551615) >= this->size() (which is 1)
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```
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This is called in the constructor of `RKNNYOLO` at `src/rknn_yolo.cpp:60`, right after querying input attributes:
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```cpp
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in_attr.dims[0] = 1;
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in_attr.dims[1] = imgsz_;
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in_attr.dims[2] = imgsz_;
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in_attr.dims[3] = 3;
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in_attr.n_dims = 4;
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ret = rknn_set_input_shapes(rknn_ctx_, io_num.n_input, &in_attr);
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```
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## Build
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```bash
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cd /opt/bytetrack-counter-cpp/build
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cmake .. -DHAS_RKNN=ON
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make -j$(nproc)
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```
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## Service
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```bash
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systemctl restart bytetrack-counter
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journalctl -u bytetrack-counter -f
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```
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