From 72b0e4399c2008cd507a339df04ac94ef859c8e8 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Tue, 26 Jun 2007 04:16:17 +0000
Subject: [PATCH] (Untested) loop recording support in MIDI Diskstream (fix
 compilation broken by loop recording changes).

git-svn-id: svn://localhost/ardour2/trunk@2036 d708f5d6-7413-0410-9779-e7cbd77b26cf
---
 libs/ardour/ardour/midi_diskstream.h |  3 +++
 libs/ardour/midi_diskstream.cc       | 29 ++++++++++++++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/libs/ardour/ardour/midi_diskstream.h b/libs/ardour/ardour/midi_diskstream.h
index cf78d0d05b..be329b4704 100644
--- a/libs/ardour/ardour/midi_diskstream.h
+++ b/libs/ardour/ardour/midi_diskstream.h
@@ -127,6 +127,7 @@ class MidiDiskstream : public Diskstream
 
 	void finish_capture (bool rec_monitors_input);
 	void transport_stopped (struct tm&, time_t, bool abort);
+	void transport_looped (nframes_t transport_frame);
 
 	void init (Diskstream::Flag);
 
@@ -145,6 +146,8 @@ class MidiDiskstream : public Diskstream
 	void engage_record_enable ();
 	void disengage_record_enable ();
 	
+	/* FIXME: too much code duplication in this class because of lack of ChannelInfo */
+
 	MidiRingBuffer*                   _playback_buf;
 	MidiRingBuffer*                   _capture_buf;
 	MidiPort*                         _source_port;
diff --git a/libs/ardour/midi_diskstream.cc b/libs/ardour/midi_diskstream.cc
index 0626f6d423..9114f689b2 100644
--- a/libs/ardour/midi_diskstream.cc
+++ b/libs/ardour/midi_diskstream.cc
@@ -1106,6 +1106,35 @@ MidiDiskstream::transport_stopped (struct tm& when, time_t twhen, bool abort_cap
 	capture_start_frame = 0;
 }
 
+void
+MidiDiskstream::transport_looped (nframes_t transport_frame)
+{
+	if (was_recording) {
+
+		// adjust the capture length knowing that the data will be recorded to disk
+		// only necessary after the first loop where we're recording
+		if (capture_info.size() == 0) {
+			capture_captured += _capture_offset;
+
+			if (_alignment_style == ExistingMaterial) {
+				capture_captured += _session.worst_output_latency();
+			} else {
+				capture_captured += _roll_delay;
+			}
+		}
+
+		finish_capture (true);
+
+		// the next region will start recording via the normal mechanism
+		// we'll set the start position to the current transport pos
+		// no latency adjustment or capture offset needs to be made, as that already happened the first time
+		capture_start_frame = transport_frame;
+		first_recordable_frame = transport_frame; // mild lie
+		last_recordable_frame = max_frames;
+		was_recording = true;
+	}
+}
+
 void
 MidiDiskstream::finish_capture (bool rec_monitors_input)
 {