The constitution shepherded into place last year by the military regime seems at first glance to be clear about freedom of the press. Media "shall enjoy the liberty to report news or express opinion", it states in Section 35. That is even extended to every person, not just the media. It sounds good until you get well into Section 34, which contains that hugely limiting word "except".
Of course a right with multiple restrictions isn't a right, and restrictions on publication, broadcast, speech and gatherings are the opposite of freedom. Still, everyone agrees that there always are reasonable restrictions in a civilised society.

Slander, libel, defamation and lese majeste laws are recognised as reasonable by most people, for example. In the most famous explanation, freedom of speech does not cover someone shouting "fire" in a crowded theatre unless there is an actual fire.