Function FL_TEST_FILE

tests/fl/channels/data.cpp:19–185

#include "fl/stl/move.h"

FL_TEST_FILE(FL_FILEPATH) {

using namespace fl;

namespace {

/// @brief Helper to build a UCS7604-style preamble (15 bytes)
void buildUCS7604Preamble(fl::vector_psram<uint8_t>& buffer) {
    buffer.push_back(0xFF); // Sync pattern
    buffer.push_back(0xFF);
    buffer.push_back(0xFF);
    buffer.push_back(0xFF);
    buffer.push_back(0xFF);
    buffer.push_back(0xFF);
    buffer.push_back(0x00); // Header
    buffer.push_back(0x02);
    buffer.push_back(0x03); // Mode: 8-bit @ 800kHz
    buffer.push_back(0x0F); // R current
    buffer.push_back(0x0F); // G current
    buffer.push_back(0x0F); // B current
    buffer.push_back(0x0F); // W current
    buffer.push_back(0x00); // Reserved
    buffer.push_back(0x00);
}

/// @brief UCS7604-style padding generator
///
/// Writes source data to destination with padding inserted after the 15-byte preamble.
/// Layout: [PREAMBLE (15 bytes)][PADDING (zeros)][LED DATA]
void ucs7604PaddingGenerator(fl::span<const uint8_t> src, fl::span<uint8_t> dst) {
    constexpr size_t PREAMBLE_LEN = 15;

    size_t srcSize = src.size();
    size_t dstSize = dst.size();

    if (dstSize < srcSize) {
        return; // Invalid: destination too small
    }

    size_t paddingSize = dstSize - srcSize;

    // Copy preamble (first 15 bytes)
    size_t preambleBytes = (srcSize < PREAMBLE_LEN) ? srcSize : PREAMBLE_LEN;
    fl::memcopy(dst.data(), src.data(), preambleBytes);

    // Insert padding zeros after preamble
    if (paddingSize > 0 && srcSize >= PREAMBLE_LEN) {
        fl::fill(dst.begin() + PREAMBLE_LEN, dst.begin() + PREAMBLE_LEN + paddingSize, uint8_t(0));
    }

    // Copy LED data after padding
    if (srcSize > PREAMBLE_LEN) {
        size_t ledDataSize = srcSize - PREAMBLE_LEN;
        fl::memcopy(dst.data() + PREAMBLE_LEN + paddingSize, src.data() + PREAMBLE_LEN, ledDataSize);
    }
}

} // anonymous namespace