#include <stdint.h>
#include <cmath>
#include <ostream>
-#include <sstream>
#include <iomanip>
class dcpomatic_round_up_test;
* at some sampling rate.
* @param r Sampling rate.
*/
- Time<S, O> round_up (float r) {
- Type const n = rint (HZ / r);
+ Time<S, O> round_up (float r) const {
+ Type const n = llrintf (HZ / r);
Type const a = _t + n - 1;
return Time<S, O> (a - (a % n));
}
}
template <typename T>
- int64_t frames (T r) const {
+ int64_t frames_round (T r) const {
+ /* We must cast to double here otherwise if T is integer
+ the calculation will round down before we get the chance
+ to llrint().
+ */
+ return llrint (_t * double(r) / HZ);
+ }
+
+ template <typename T>
+ int64_t frames_floor (T r) const {
return floor (_t * r / HZ);
}
+ template <typename T>
+ int64_t frames_ceil (T r) const {
+ /* We must cast to double here otherwise if T is integer
+ the calculation will round down before we get the chance
+ to ceil().
+ */
+ return ceil (_t * double(r) / HZ);
+ }
+
/** @param r Frames per second */
template <typename T>
void split (T r, int& h, int& m, int& s, int& f) const
/* Do this calculation with frames so that we can round
to a frame boundary at the start rather than the end.
*/
- int64_t ff = frames (r);
+ int64_t ff = frames_round (r);
h = ff / (3600 * r);
ff -= h * 3600 * r;
static Time<S, O> from_seconds (double s) {
- return Time<S, O> (rint (s * HZ));
+ return Time<S, O> (llrint (s * HZ));
}
template <class T>
/** Time relative to the start of the output DCP in its frame rate */
typedef Time<DCPTimeDifferentiator, ContentTimeDifferentiator> DCPTime;
-class ContentTimePeriod
+template <class T>
+class TimePeriod
{
public:
- ContentTimePeriod () {}
+ TimePeriod () {}
- ContentTimePeriod (ContentTime f, ContentTime t)
+ TimePeriod (T f, T t)
: from (f)
, to (t)
{}
- ContentTime from;
- ContentTime to;
+ /** start time of sampling interval that the period is from */
+ T from;
+ /** start time of next sampling interval after the period */
+ T to;
- ContentTimePeriod operator+ (ContentTime const & o) const {
- return ContentTimePeriod (from + o, to + o);
+ T duration () const {
+ return to - from;
}
- bool overlaps (ContentTimePeriod const & o) const;
- bool contains (ContentTime const & o) const;
+ TimePeriod<T> operator+ (T const & o) const {
+ return TimePeriod<T> (from + o, to + o);
+ }
+
+ bool overlaps (TimePeriod<T> const & other) const {
+ return (from < other.to && to > other.from);
+ }
+
+ bool contains (T const & other) const {
+ return (from <= other && other < to);
+ }
+
+ bool operator== (TimePeriod<T> const & other) const {
+ return from == other.from && to == other.to;
+ }
};
+typedef TimePeriod<ContentTime> ContentTimePeriod;
+typedef TimePeriod<DCPTime> DCPTimePeriod;
+
DCPTime min (DCPTime a, DCPTime b);
DCPTime max (DCPTime a, DCPTime b);
ContentTime min (ContentTime a, ContentTime b);
ContentTime max (ContentTime a, ContentTime b);
std::ostream& operator<< (std::ostream& s, ContentTime t);
std::ostream& operator<< (std::ostream& s, DCPTime t);
+std::ostream& operator<< (std::ostream& s, DCPTimePeriod p);
#endif