heif_context_read_from_reader 331 libheif-1.3.2/libheif/heif.h struct heif_error heif_context_read_from_reader(struct heif_context*, heif_context_read_from_reader 434 libheif-1.3.2/libheif/heif_cxx.h Error err = Error(heif_context_read_from_reader(m_context.get(), &heif_reader_trampoline,