qgst_p.h File Reference

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#include <QtCore/qdebug.h>
#include <QtCore/qlist.h>
#include <QtCore/qsemaphore.h>
#include <QtMultimedia/qaudioformat.h>
#include <QtMultimedia/qvideoframe.h>
#include <QtMultimedia/private/qtmultimediaglobal_p.h>
#include <QtMultimedia/private/qmultimediautils_p.h>
#include <gst/gst.h>
#include <gst/video/video-info.h>
#include "qgst_handle_types_p.h"
#include <type_traits>

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Classes
struct	QGstImpl::GstObjectTraits< T >
struct	QGstImpl::GstObjectTraits< GObject >
struct	QGRange< T >
struct	QGString
class	QGValue
class	QGstPointerImpl::QGstObjectWrapper< GstType >
class	QGstStructure
struct	QGstPointerImpl::QGstRefcountingAdaptor< GstCaps >
class	QGstCaps
struct	QGstPointerImpl::QGstRefcountingAdaptor< GstObject >
class	QGstObject
class	QGObjectHandlerConnection
class	QGObjectHandlerScopedConnection
class	QGstPad
class	QGstClock
class	QGstElement
class	QGstBin
class	QGstBaseSink
class	QGstBaseSrc

Namespaces
namespace	QGstImpl
namespace	QGstPointerImpl

Macros
#define	QGST_DEFINE_CAST_TRAITS(ClassName, MACRO_LABEL)
#define	QGST_DEFINE_CAST_TRAITS_FOR_INTERFACE(ClassName, MACRO_LABEL)

Functions
	QGstImpl::QGST_DEFINE_CAST_TRAITS (GstBin, BIN)
	QGstImpl::QGST_DEFINE_CAST_TRAITS (GstClock, CLOCK)
	QGstImpl::QGST_DEFINE_CAST_TRAITS (GstElement, ELEMENT)
	QGstImpl::QGST_DEFINE_CAST_TRAITS (GstObject, OBJECT)
	QGstImpl::QGST_DEFINE_CAST_TRAITS (GstPad, PAD)
	QGstImpl::QGST_DEFINE_CAST_TRAITS (GstPipeline, PIPELINE)
	QGstImpl::QGST_DEFINE_CAST_TRAITS (GstBaseSink, BASE_SINK)
	QGstImpl::QGST_DEFINE_CAST_TRAITS (GstBaseSrc, BASE_SRC)
	QGstImpl::QGST_DEFINE_CAST_TRAITS_FOR_INTERFACE (GstTagSetter, TAG_SETTER)
template<typename DestinationType , typename SourceType >
bool	qIsGstObjectOfType (SourceType *arg)
template<typename DestinationType , typename SourceType >
DestinationType *	qGstSafeCast (SourceType *arg)
template<typename DestinationType , typename SourceType >
DestinationType *	qGstCheckedCast (SourceType *arg)
GstClockTime	qGstClockTimeFromChrono (std::chrono::nanoseconds ns)
QString	errorMessageCannotFindElement (std::string_view element)

Variables
template<typename... Ts>
std::enable_if_t<(std::is_base_of_v< QGstElement, Ts > &&...), void	qLinkGstElements )(const Ts &...ts)
template<typename... Ts>
std::enable_if_t<(std::is_base_of_v< QGstElement, Ts > &&...), void	qUnlinkGstElements )(const Ts &...ts)

Macro Definition Documentation

QGST_DEFINE_CAST_TRAITS

#define QGST_DEFINE_CAST_TRAITS	(		ClassName,
			MACRO_LABEL )

Value:

    template <>                                         \
    struct GstObjectTraits<ClassName>                   \
    {                                                   \
        using Type = ClassName;                         \
        template <typename U>                           \
        static bool isObjectOfType(U *arg)              \
        {                                               \
            return GST_IS_##MACRO_LABEL(arg);           \
        }                                               \
        template <typename U>                           \
        static Type *cast(U *arg)                       \
        {                                               \
            return GST_##MACRO_LABEL##_CAST(arg);       \
        }                                               \
        template <typename U>                           \
        static Type *checked_cast(U *arg)               \
        {                                               \
            return GST_##MACRO_LABEL(arg);              \
        }                                               \
    };                                                  \
    static_assert(true, "ensure semicolon")

Definition at line 59 of file qgst_p.h.

QGST_DEFINE_CAST_TRAITS_FOR_INTERFACE

#define QGST_DEFINE_CAST_TRAITS_FOR_INTERFACE	(		ClassName,
			MACRO_LABEL )

Value:

  template <>                                                         \
  struct GstObjectTraits<ClassName>                                   \
  {                                                                   \
    using Type = ClassName;                                           \
    template <typename U>                                             \
    static bool isObjectOfType(U *arg)                                \
    {                                                                 \
      return GST_IS_##MACRO_LABEL(arg);                               \
    }                                                                 \
    template <typename U>                                             \
    static Type *cast(U *arg)                                         \
    {                                                                 \
      return checked_cast(arg);                                       \
    }                                                                 \
    template <typename U>                                             \
    static Type *checked_cast(U *arg)                                 \
    {                                                                 \
      return GST_##MACRO_LABEL(arg);                                  \
    }                                                                 \
  };                                                                  \
  static_assert(true, "ensure semicolon")

Definition at line 82 of file qgst_p.h.

Function Documentation

errorMessageCannotFindElement()

QString errorMessageCannotFindElement ( std::string_view element )

inline

Definition at line 817 of file qgst_p.h.

References QStringLiteral.

Referenced by QGStreamerAudioSink::create(), QGstreamerAudioDecoder::create(), QGstreamerCamera::create(), QGstreamerImageCapture::create(), QGstreamerMediaPlayer::create(), Q_LOGGING_CATEGORY(), Q_LOGGING_CATEGORY(), Q_LOGGING_CATEGORY(), Q_LOGGING_CATEGORY(), and QGstreamerMediaPlayer::setMedia().

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qGstCheckedCast()

template<typename DestinationType , typename SourceType >

DestinationType * qGstCheckedCast

(

SourceType *

arg

)

Definition at line 164 of file qgst_p.h.

References arg, and Q_ASSERT.

qGstClockTimeFromChrono()

GstClockTime qGstClockTimeFromChrono ( std::chrono::nanoseconds ns )

inline

Definition at line 812 of file qgst_p.h.

qGstSafeCast()

template<typename DestinationType , typename SourceType >

DestinationType * qGstSafeCast

(

SourceType *

arg

)

Definition at line 155 of file qgst_p.h.

References arg.

qIsGstObjectOfType()

template<typename DestinationType , typename SourceType >

bool qIsGstObjectOfType

(

SourceType *

arg

)

Definition at line 148 of file qgst_p.h.

References arg.

Variable Documentation

qLinkGstElements

template<typename... Ts>

std::enable_if_t<(std::is_base_of_v< QGstElement, Ts > &&...), void qLinkGstElements) (const Ts &...ts)

(

const Ts &...

ts

)

Definition at line 644 of file qgst_p.h.

Referenced by QGstreamerVideoSink::QGstreamerVideoSink(), QGstreamerMediaEncoder::record(), QGstreamerMediaCapture::setAudioInput(), QGstreamerMediaPlayer::setMedia(), and QGstreamerVideoOutput::setVideoSink().

qUnlinkGstElements

template<typename... Ts>

std::enable_if_t<(std::is_base_of_v< QGstElement, Ts > &&...), void qUnlinkGstElements) (const Ts &...ts)

(

const Ts &...

ts

)

Definition at line 663 of file qgst_p.h.

Referenced by QGstreamerMediaCapture::setAudioInput(), QGstreamerMediaCapture::setAudioOutput(), QGstreamerMediaCapture::setImageCapture(), and QGstreamerMediaCapture::unlinkEncoder().