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June 11, 2017 20:27
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// Generated by gmmproc 2.50.1 -- DO NOT MODIFY! | |
#ifndef _GSTREAMERMM_AUDIOCLOCK_H | |
#define _GSTREAMERMM_AUDIOCLOCK_H | |
#include <glibmm/ustring.h> | |
#include <sigc++/sigc++.h> | |
/* gstreamermm - a C++ wrapper for gstreamer | |
* | |
* Copyright 2008-2016 The gstreamermm Development Team | |
* | |
* This library is free software; you can redistribute it and/or | |
* modify it under the terms of the GNU Lesser General Public | |
* License as published by the Free Software Foundation; either | |
* version 2.1 of the License, or (at your option) any later version. | |
* | |
* This library is distributed in the hope that it will be useful, | |
* but WITHOUT ANY WARRANTY; without even the implied warranty of | |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
* Lesser General Public License for more details. | |
* | |
* You should have received a copy of the GNU Lesser General Public | |
* License along with this library; if not, write to the Free | |
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
*/ | |
#include <gstreamermm/systemclock.h> | |
#include <memory> | |
#ifndef DOXYGEN_SHOULD_SKIP_THIS | |
using GstAudioClock = struct _GstAudioClock; | |
using GstAudioClockClass = struct _GstAudioClockClass; | |
#endif /* DOXYGEN_SHOULD_SKIP_THIS */ | |
#ifndef DOXYGEN_SHOULD_SKIP_THIS | |
namespace Gst | |
{ class AudioClock_Class; } // namespace Gst | |
#endif //DOXYGEN_SHOULD_SKIP_THIS | |
namespace Gst | |
{ | |
/** A Helper object for implementing audio clocks. | |
* Gst::AudioClock makes it easy for elements to implement a Gst::Clock, | |
* they simply need to provide a slot that returns the current clock time. | |
* | |
* This object is internally used to implement the clock in | |
* Gst::AudioBaseSink. | |
* | |
* Last reviewed on 2016-04-23 (1.8.0). | |
*/ | |
class AudioClock : public Gst::SystemClock | |
{ | |
#ifndef DOXYGEN_SHOULD_SKIP_THIS | |
public: | |
using CppObjectType = AudioClock; | |
using CppClassType = AudioClock_Class; | |
using BaseObjectType = GstAudioClock; | |
using BaseClassType = GstAudioClockClass; | |
// noncopyable | |
AudioClock(const AudioClock&) = delete; | |
AudioClock& operator=(const AudioClock&) = delete; | |
private: friend class AudioClock_Class; | |
static CppClassType audioclock_class_; | |
protected: | |
explicit AudioClock(const Glib::ConstructParams& construct_params); | |
explicit AudioClock(GstAudioClock* castitem); | |
#endif /* DOXYGEN_SHOULD_SKIP_THIS */ | |
public: | |
AudioClock(AudioClock&& src) noexcept; | |
AudioClock& operator=(AudioClock&& src) noexcept; | |
~AudioClock() noexcept override; | |
/** Get the GType for this class, for use with the underlying GObject type system. | |
*/ | |
static GType get_type() G_GNUC_CONST; | |
#ifndef DOXYGEN_SHOULD_SKIP_THIS | |
static GType get_base_type() G_GNUC_CONST; | |
#endif | |
///Provides access to the underlying C GObject. | |
GstAudioClock* gobj() { return reinterpret_cast<GstAudioClock*>(gobject_); } | |
///Provides access to the underlying C GObject. | |
const GstAudioClock* gobj() const { return reinterpret_cast<GstAudioClock*>(gobject_); } | |
///Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. | |
GstAudioClock* gobj_copy(); | |
private: | |
public: | |
/** For example, | |
* Gst::ClockTime on_get_time(const Glib::RefPtr<Gst::Clock>& clock);. | |
* This function will be called whenever the current clock time needs to be | |
* calculated. If this function returns Gst::CLOCK_TIME_NONE, the last | |
* reported time will be returned by the clock. | |
* | |
* @param clock The Gst::AudioClock. | |
*/ | |
typedef sigc::slot< Gst::ClockTime, const Glib::RefPtr<Gst::Clock>& > SlotGetTime; | |
protected: | |
AudioClock(const Glib::ustring& name, const SlotGetTime& time_slot); | |
public: | |
/** Create a new Gst::AudioClock instance. Whenever the clock time should | |
* be calculated it will call @a time_slot. When @a time_slot returns | |
* Gst::CLOCK_TIME_NONE, the clock will return the last reported time. | |
* | |
* @param name The name of the clock. | |
* @param time_slot A slot that returns the time. | |
* | |
* @return a new Gst::AudioClock. | |
*/ | |
static Glib::RefPtr<AudioClock> create(const Glib::ustring& name, const SlotGetTime& time_slot); | |
/** Inform @a clock that future calls to Gst::AudioClockGetTimeFunc will return values | |
* starting from @a time. The clock will update an internal offset to make sure that | |
* future calls to internal_time will return an increasing result as required by | |
* the Gst::Clock object. | |
* | |
* @param time A Gst::ClockTime. | |
*/ | |
void reset(Gst::ClockTime time); | |
/** Adjust @a time with the internal offset of the audio clock. | |
* | |
* @param time A Gst::ClockTime. | |
* @return @a time adjusted with the internal offset. | |
*/ | |
Gst::ClockTime adjust(Gst::ClockTime time); | |
/** Report the time as returned by the Gst::AudioClockGetTimeFunc without applying | |
* any offsets. | |
* | |
* @return The time as reported by the time function of the audio clock. | |
*/ | |
Gst::ClockTime get_time() const; | |
/** Invalidate the clock function. Call this function when the provided | |
* Gst::AudioClockGetTimeFunc cannot be called anymore, for example, when the | |
* user_data becomes invalid. | |
* | |
* After calling this function, @a clock will return the last returned time for | |
* the rest of its lifetime. | |
*/ | |
void invalidate(); | |
#ifndef DOXYGEN_SHOULD_SKIP_THIS | |
private: | |
// TODO this slot should be moved in move constructor, but for now it's | |
// impossible to provide custom move constructor | |
// (see https://bugzilla.gnome.org/show_bug.cgi?id=756593). | |
// However, task should be managed by RefPtr class, so move constructor | |
// and move assignment operator will never be called. | |
std::unique_ptr<SlotGetTime> m_slot; | |
#endif | |
public: | |
public: | |
//C++ methods used to invoke GTK+ virtual functions: | |
protected: | |
//GTK+ Virtual Functions (override these to change behaviour): | |
//Default Signal Handlers:: | |
}; | |
} // namespace Gst | |
namespace Glib | |
{ | |
/** A Glib::wrap() method for this object. | |
* | |
* @param object The C instance. | |
* @param take_copy False if the result should take ownership of the C instance. True if it should take a new copy or ref. | |
* @result A C++ instance that wraps this C instance. | |
* | |
* @relates Gst::AudioClock | |
*/ | |
Glib::RefPtr<Gst::AudioClock> wrap(GstAudioClock* object, bool take_copy = false); | |
} | |
#endif /* _GSTREAMERMM_AUDIOCLOCK_H */ | |
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