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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/permissions/prediction_service/permissions_aiv3_executor.h"
#include <array>
#include <vector>
#include "base/types/optional_ref.h"
#include "components/optimization_guide/core/optimization_guide_util.h"
#include "components/permissions/prediction_service/permissions_aiv3_model_metadata.pb.h"
namespace permissions {
PermissionsAiv3ExecutorInput::~PermissionsAiv3ExecutorInput() = default;
PermissionsAiv3ExecutorInput::PermissionsAiv3ExecutorInput() = default;
PermissionsAiv3ExecutorInput::PermissionsAiv3ExecutorInput(
const PermissionsAiv3ExecutorInput&) = default;
PermissionsAiv3ExecutorInput::PermissionsAiv3ExecutorInput(
PermissionsAiv3ExecutorInput&&) = default;
PermissionsAiv3ExecutorInput::PermissionsAiv3ExecutorInput(SkBitmap snapshot)
: snapshot(std::move(snapshot)) {}
bool PermissionsAiv3Executor::Preprocess(
const std::vector<TfLiteTensor*>& input_tensors,
const ModelInput& input) {
if (!ConvertSkBitMapToTfliteTensor(input_tensors[0], input.snapshot)) {
return false;
}
SetThresholdValues(input.metadata);
return true;
}
void PermissionsAiv3Executor::SetThresholdValues(
base::optional_ref<const PermissionsAiv3ModelMetadata> metadata) {
if (!metadata.has_value() || !metadata.value().has_relevance_thresholds()) {
DCHECK(request_type() == RequestType::kNotifications ||
request_type() == RequestType::kGeolocation);
// Empirically determined thresholds, that map to relevance enum vals as
// follows:
// val < thr[0] -> VeryLow
// ...
// val < thr[4] -> High
// val >= thr[4] -> VeryHigh
relevance_thresholds() = {0.2f, 0.4f, 0.7f, 0.84f};
if (request_type() == RequestType::kGeolocation) {
relevance_thresholds() = {0.2f, 0.4f, 0.5f, 0.65f};
}
return;
}
const auto& thresholds = metadata.value().relevance_thresholds();
relevance_thresholds() = {
thresholds.min_low_relevance(), thresholds.min_medium_relevance(),
thresholds.min_high_relevance(), thresholds.min_very_high_relevance()};
}
} // namespace permissions
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