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Saving and loading of timeline, with fading and gaps. Applying fading to

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MediaSource. Playing with timeline options to facilitate its use.
This commit is contained in:
brunoherbelin
2020-08-24 00:23:03 +02:00
parent 86fd5f21f3
commit 240f1fde0a
11 changed files with 382 additions and 196 deletions
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38
Timeline.h
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@@ -8,6 +8,8 @@
#include <gst/pbutils/pbutils.h>
#define MAX_TIMELINE_ARRAY 2000
struct TimeInterval
{
GstClockTime begin;
@@ -81,16 +83,16 @@ public:
~Timeline();
Timeline& operator = (const Timeline& b);
void reset();
bool is_valid();
void update();
// global properties of the timeline
// timeline is invalid untill all 3 are set
// timeline is valid only if all 3 are set
void setFirst(GstClockTime first);
void setEnd(GstClockTime end);
void setStep(GstClockTime dt);
// get properties
// Timing manipulation
inline GstClockTime start() const { return timing_.begin; }
inline GstClockTime end() const { return timing_.end; }
inline GstClockTime first() const { return first_; }
@@ -98,33 +100,45 @@ public:
inline GstClockTime step() const { return step_; }
inline GstClockTime duration() const { return timing_.duration(); }
inline size_t numFrames() const { return duration() / step_; }
inline TimeIntervalSet gaps() const { return gaps_; }
inline size_t numGaps() const { return gaps_.size(); }
GstClockTime next(GstClockTime time) const;
GstClockTime previous(GstClockTime time) const;
// Add / remove / get gaps in the timeline
// Manipulation of gaps in the timeline
inline TimeIntervalSet gaps() const { return gaps_; }
inline TimeIntervalSet sections() const;
inline size_t numGaps() const { return gaps_.size(); }
float *gapsArray();
void clearGaps();
void setGaps(TimeIntervalSet g);
bool addGap(TimeInterval s);
bool addGap(GstClockTime begin, GstClockTime end);
bool removeGaptAt(GstClockTime t);
bool gapAt(const GstClockTime t, TimeInterval &gap) const;
void setGaps(TimeIntervalSet g);
// synchronize data structures
void updateGapsFromArray(float *array_, size_t array_size_);
void fillArrayFromGaps(float *array_, size_t array_size_);
float fadingAt(const GstClockTime t);
inline float *fadingArray() { return fadingArray_; }
void clearFading();
void smoothFading(uint N = 1);
void autoFading(uint milisecond = 100);
private:
void reset();
// global information on the timeline
TimeInterval timing_;
GstClockTime first_;
GstClockTime step_;
// main data structure containing list of gaps in the timeline
TimeIntervalSet gaps_;
TimeIntervalSet gaps_;
float gapsArray_[MAX_TIMELINE_ARRAY];
bool gaps_array_need_update_;
// synchronize data structures
void updateGapsFromArray(float *array, size_t array_size);
void fillArrayFromGaps(float *array, size_t array_size);
float fadingArray_[MAX_TIMELINE_ARRAY];
};