decoder/Bridge: move code to DecoderControl::SetReady()

src/decoder/DecoderControl.cxx

@@ -53,6 +53,27 @@ DecoderControl::WaitForDecoder()
 	client_is_waiting = false;
 }
 
+void
+DecoderControl::SetReady(const AudioFormat audio_format,
+			 bool _seekable, SignedSongTime _duration)
+{
+	assert(state == DecoderState::START);
+	assert(pipe != nullptr);
+	assert(pipe->IsEmpty());
+	assert(audio_format.IsDefined());
+	assert(audio_format.IsValid());
+
+	in_audio_format = audio_format;
+	out_audio_format = audio_format;
+	out_audio_format.ApplyMask(configured_audio_format);
+
+	seekable = _seekable;
+	total_time = _duration;
+
+	state = DecoderState::DECODE;
+	client_cond.signal();
+}
+
 bool
 DecoderControl::IsCurrentSong(const DetachedSong &_song) const
 {