From f32aeb01bfc905ce2fdbc5b2f79e6f91a3f7b769 Mon Sep 17 00:00:00 2001
From: Johannes Schickel
Date: Wed, 6 Jan 2010 20:24:56 +0000
Subject: Add a constructor to Timestamp, which allows for specifying seconds +
 start frames directly.

svn-id: r47091
---
 sound/timestamp.cpp | 9 +++++++++
 sound/timestamp.h   | 8 ++++++++
 2 files changed, 17 insertions(+)

(limited to 'sound')

diff --git a/sound/timestamp.cpp b/sound/timestamp.cpp
index f6ac56bfad..6cf0c8fa9f 100644
--- a/sound/timestamp.cpp
+++ b/sound/timestamp.cpp
@@ -46,6 +46,15 @@ Timestamp::Timestamp(uint32 ms, int fr) {
 	_numberOfFrames = (ms % 1000) * _framerate / 1000;
 }
 
+Timestamp::Timestamp(uint s, int frames, int fr) {
+	assert(fr > 0);
+
+	_secs = s;
+	_framerateFactor = 1000 / gcd(1000, fr);
+	_framerate = fr * _framerateFactor;
+	_numberOfFrames = 0;
+	*this = addFrames(frames);
+}
 
 Timestamp Timestamp::convertToFramerate(int newFramerate) const {
 	Timestamp ts(*this);
diff --git a/sound/timestamp.h b/sound/timestamp.h
index fcfa8cf5fc..cf149a65d0 100644
--- a/sound/timestamp.h
+++ b/sound/timestamp.h
@@ -77,6 +77,14 @@ public:
 	 */
 	Timestamp(uint32 msecs, int framerate);
 
+	/**
+	 * Set up a timestamp with a given time, frames and framerate.
+	 * @param secs      starting time in seconds
+	 * @param frames    starting frames
+	 * @param framerate number of frames per second (must be > 0)
+	 */
+	Timestamp(uint secs, int frames, int framerate);
+
 	/**
 	 * Return a timestamp which represents as closely as possible
 	 * the point in time describes by this timestamp, but with
-- 
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