add to iterator

@brief add an object to an array @sa https://json.nlohmann.me/api/basic_json/operator+=/

! @brief subtract from iterator @pre The iterator is initialized; i.e. `m_object != nullptr`. */

* Overload to make the compiler happy while it is instantiating * dump_integer for number_unsigned_t. * Must never be called. */

! @brief skip the UTF-8 byte order mark @return true iff there is no BOM or the correct BOM has been skipped */

build a table that decodes both magnitude and value of small ACs in one go.

decode image to YCbCr format

@OPTIMIZE: store non-zigzagged during the decode passes, and only de-zigzag when dequantizing

after we see SOS