micheleandCursor
0fc714e431
Ship station reorder, DAB playing ids in presets, RDS PS/RT and DAB DLS in tuner status, Si4684 data-service read, host tests, and UI now-playing lines. Co-authored-by: Cursor <cursoragent@cursor.com>
71 lines
1.7 KiB
C++
71 lines
1.7 KiB
C++
/**
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* @file DabDynamicLabelAccumulator.cpp
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* @brief DabDynamicLabelAccumulator implementation.
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*
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* DigiRadio firmware — https://github.com/manvalan/DigiRadio
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*
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* Copyright 2026 Michele Bigi
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* SPDX-License-Identifier: Apache-2.0
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*
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* @author Michele Bigi
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* @date 2026-07-06
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*/
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#include "core/DabDynamicLabelAccumulator.hpp"
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#include <algorithm>
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#include <cstring>
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namespace core {
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void DabDynamicLabelAccumulator::reset() noexcept
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{
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buffer_.fill('\0');
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segmentValid_.fill(false);
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expectedSegments_ = 0U;
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}
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void DabDynamicLabelAccumulator::applySegment(
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std::uint16_t segmentIndex,
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std::uint16_t segmentCount,
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std::span<const std::uint8_t> payload) noexcept
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{
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if (segmentCount == 0U || segmentCount > kMaxSegments) {
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return;
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}
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if (segmentIndex >= segmentCount) {
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return;
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}
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if (expectedSegments_ != segmentCount) {
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reset();
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expectedSegments_ = segmentCount;
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}
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const std::size_t offset =
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static_cast<std::size_t>(segmentIndex)
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* static_cast<std::size_t>(payload.size());
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if (offset >= buffer_.size()) {
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return;
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}
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const std::size_t copyLen =
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std::min(payload.size(), buffer_.size() - offset);
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std::memcpy(buffer_.data() + offset, payload.data(), copyLen);
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segmentValid_[segmentIndex] = true;
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}
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std::optional<BroadcastLabel> DabDynamicLabelAccumulator::label() const
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{
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if (expectedSegments_ == 0U) {
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return std::nullopt;
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}
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for (std::uint16_t i = 0U; i < expectedSegments_; ++i) {
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if (!segmentValid_[i]) {
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return std::nullopt;
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}
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}
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return BroadcastLabel::tryFromChipBytes(
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std::string_view(buffer_.data(), buffer_.size()));
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}
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} // namespace core
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