write_hdr()

bool MayaFlux::IO::STBImageWriter::write_hdr ( const std::string &  filepath, const ImageData &  data  )

private

Definition at line 307 of file STBImageWriter.cpp.

{
    const auto* src = data.as_float();
    if (!src) {
        m_last_error = "HDR requires float ImageData";
        MF_ERROR(Journal::Component::IO, Journal::Context::FileIO, m_last_error);
        return false;
    }
 
    if (data.channels != 3 && data.channels != 4) {
        m_last_error = "HDR supports only 3 or 4 channels (got "
            + std::to_string(data.channels) + ")";
        MF_ERROR(Journal::Component::IO, Journal::Context::FileIO, m_last_error);
        return false;
    }
 
    std::vector<uint8_t> encoded;
    const int ok = stbi_write_hdr_to_func(
        &stbi_memory_writer,
        &encoded,
        static_cast<int>(data.width),
        static_cast<int>(data.height),
        static_cast<int>(data.channels),
        src->data());
 
    if (!ok || encoded.empty()) {
        m_last_error = "stbi_write_hdr_to_func failed";
        MF_ERROR(Journal::Component::IO, Journal::Context::FileIO, m_last_error);
        return false;
    }
 
    if (!flush_to_disk(filepath, encoded)) {
        m_last_error = "Failed to write HDR file: " + filepath;
        MF_ERROR(Journal::Component::IO, Journal::Context::FileIO, m_last_error);
        return false;
    }
 
    MF_INFO(Journal::Component::IO, Journal::Context::FileIO,
        "Wrote HDR: {} ({}x{}, {} channels)", filepath, data.width, data.height, data.channels);
    return true;
}

References MayaFlux::IO::ImageData::as_float(), MayaFlux::IO::ImageData::channels, MayaFlux::Journal::FileIO, MayaFlux::IO::ImageData::height, MayaFlux::Journal::IO, m_last_error, MF_ERROR, MF_INFO, and MayaFlux::IO::ImageData::width.

Referenced by write().

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