Function sam3_store_obj_ptr

sam3.cpp:11717–11734

}

static void sam3_store_obj_ptr(
    sam3_tracker& tracker, const sam3_model& model,
    int inst_id, const float* pd, int frame_idx) {
    const int D = model.hparams.neck_dim;
    if (!tracker.ctx) {
        struct ggml_init_params tp = {ggml_tensor_overhead() * 4096, nullptr, true};
        tracker.ctx = ggml_init(tp);
    }
    auto* pt = ggml_new_tensor_2d(tracker.ctx, GGML_TYPE_F32, D, 1);
    auto* pb = ggml_backend_alloc_buffer(model.backend, D * sizeof(float));
    struct ggml_tallocr ta = ggml_tallocr_new(pb);
    ggml_tallocr_alloc(&ta, pt);
    tracker.owned_buffers.push_back(pb);
    ggml_backend_tensor_set(pt, pd, 0, D * sizeof(float));
    auto& bk = tracker.ptr_banks[inst_id];
    bk.push_back({frame_idx, pt});
    while ((int)bk.size() > model.hparams.max_obj_ptrs) bk.erase(bk.begin());
}

sam3_tracker_ptr sam3_create_tracker(const sam3_model& model,
                                     const sam3_video_params& params) {