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Added some comments to Audio::Timestamp

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svn-id: r39257
This commit is contained in:
Max Horn 2009-03-09 03:45:40 +00:00
parent 563d76d342
commit 7cd40da1be
1 changed files with 12 additions and 1 deletions
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13
sound/timestamp.h
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@ -28,9 +28,14 @@
#include "common/scummsys.h"
namespace Audio {
/**
* Timestamps allow measuring times with a sub-millisecond granularity,
* and without rounding losses. This is achieved by measuring frames
* instead of milliseconds: Specify an initial time in milliseconds
* plus framerate (in Hertz, so frames per second).
*/
class Timestamp {
protected:
uint32 _msecs;
@ -40,6 +45,12 @@ protected:
public:
Timestamp();
/**
* Set up a timestamp with a given time and framerate.
* @param msecs staring time in milliseconds
* @param frameRate number of frames per second
*/
Timestamp(uint32 msecs, int frameRate);
/** Adds a number of frames to a timestamp. */