From 8c9c0836a31058f4854071d8a521077293fe091c Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Wed, 7 Nov 2012 23:02:11 +0000
Subject: experimental option to support LTC 29.97000 fps generators.

also change 29.97ndf frame-rate to 30000/1001.

git-svn-id: svn://localhost/ardour2/branches/3.0@13395 d708f5d6-7413-0410-9779-e7cbd77b26cf
---
 libs/ardour/ardour/rc_configuration_vars.h |  1 +
 libs/ardour/ltc_slave.cc                   |  9 +++++++++
 libs/timecode/src/time.cc                  | 26 +++++++++++++++++++++++++-
 libs/timecode/timecode/time.h              |  2 ++
 4 files changed, 37 insertions(+), 1 deletion(-)

(limited to 'libs')

diff --git a/libs/ardour/ardour/rc_configuration_vars.h b/libs/ardour/ardour/rc_configuration_vars.h
index ea44c60682..f046ec428e 100644
--- a/libs/ardour/ardour/rc_configuration_vars.h
+++ b/libs/ardour/ardour/rc_configuration_vars.h
@@ -50,6 +50,7 @@ CONFIG_VARIABLE (bool, first_midi_bank_is_zero, "diplay-first-midi-bank-as-zero"
 CONFIG_VARIABLE (int, mtc_qf_speed_tolerance, "mtc-qf-speed-tolerance", 5)
 CONFIG_VARIABLE (bool, timecode_sync_frame_rate, "timecode-sync-frame-rate", true)
 CONFIG_VARIABLE (bool, timecode_source_is_synced, "timecode-source-is-synced", true)
+CONFIG_VARIABLE (bool, timecode_source_2997, "timecode-source-2997", false)
 CONFIG_VARIABLE (SyncSource, sync_source, "sync-source", JACK)
 CONFIG_VARIABLE (std::string, ltc_source_port, "ltc-source-port", "system:capture_1")
 CONFIG_VARIABLE (bool, send_ltc, "send-ltc", false)
diff --git a/libs/ardour/ltc_slave.cc b/libs/ardour/ltc_slave.cc
index fb16c5e79a..28c6331628 100644
--- a/libs/ardour/ltc_slave.cc
+++ b/libs/ardour/ltc_slave.cc
@@ -231,6 +231,15 @@ LTC_Slave::detect_ltc_fps(int frameno, bool df)
 	/* poll and check session TC */
 	TimecodeFormat tc_format = apparent_timecode_format();
 	TimecodeFormat cur_timecode = session.config.get_timecode_format();
+
+	if (Config->get_timecode_source_2997() && tc_format == Timecode::timecode_2997drop) {
+		tc_format = Timecode::timecode_2997000drop;
+	}
+	else
+	if (Config->get_timecode_source_2997() && tc_format == Timecode::timecode_2997) {
+		tc_format = Timecode::timecode_2997000;
+	}
+
 	if (Config->get_timecode_sync_frame_rate()) {
 		/* enforce time-code */
 		if (!did_reset_tc_format) {
diff --git a/libs/timecode/src/time.cc b/libs/timecode/src/time.cc
index 5a4da10691..b848db79b3 100644
--- a/libs/timecode/src/time.cc
+++ b/libs/timecode/src/time.cc
@@ -445,12 +445,20 @@ timecode_to_frames_per_second(TimecodeFormat t)
 
 			break;
 		case timecode_2997:
-			return 29.97;
+			return (30000.0/1001.0); //29.97;
 
 			break;
 		case timecode_2997drop:
 			return (30000.0/1001.0); //29.97;
 
+			break;
+		case timecode_2997000:
+			return 29.97;
+
+			break;
+		case timecode_2997000drop:
+			return 29.97;
+
 			break;
 		case timecode_30:
 			return 30;
@@ -502,6 +510,14 @@ timecode_has_drop_frames(TimecodeFormat t)
 		case timecode_2997drop:
 			return true;
 
+			break;
+		case timecode_2997000:
+			return false;
+
+			break;
+		case timecode_2997000drop:
+			return true;
+
 			break;
 		case timecode_30:
 			return false;
@@ -554,6 +570,14 @@ timecode_format_name (TimecodeFormat const t)
 		case timecode_2997drop:
 			return "29.97 drop";
 
+			break;
+		case timecode_2997000:
+			return "29.97000";
+
+			break;
+		case timecode_2997000drop:
+			return "29.97000 drop";
+
 			break;
 		case timecode_30:
 			return "30";
diff --git a/libs/timecode/timecode/time.h b/libs/timecode/timecode/time.h
index 8166ba8f39..256d8feaaf 100644
--- a/libs/timecode/timecode/time.h
+++ b/libs/timecode/timecode/time.h
@@ -39,6 +39,8 @@ enum TimecodeFormat {
 	timecode_25,
 	timecode_2997,
 	timecode_2997drop,
+	timecode_2997000,
+	timecode_2997000drop,
 	timecode_30,
 	timecode_30drop,
 	timecode_5994,
-- 
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