avfcamerautility.mm File Reference

#include "avfcamerautility_p.h"
#include "avfcameradebug_p.h"
#include <QtCore/qvector.h>
#include <QtCore/qpair.h>
#include <private/qmultimediautils_p.h>
#include "avfvideobuffer_p.h"
#include "qavfhelpers_p.h"
#include <functional>
#include <algorithm>
#include <limits>
#include <tuple>

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Functions
QT_BEGIN_NAMESPACE AVFPSRange	qt_connection_framerates (AVCaptureConnection *videoConnection)
AVCaptureDeviceFormat *	qt_convert_to_capture_device_format (AVCaptureDevice *captureDevice, const QCameraFormat &cameraFormat, const std::function< bool(uint32_t)> &cvFormatValidator)
QVector< AVCaptureDeviceFormat * >	qt_unique_device_formats (AVCaptureDevice *captureDevice, FourCharCode filter)
QSize	qt_device_format_resolution (AVCaptureDeviceFormat *format)
QSize	qt_device_format_high_resolution (AVCaptureDeviceFormat *format)
QVector< AVFPSRange >	qt_device_format_framerates (AVCaptureDeviceFormat *format)
QSize	qt_device_format_pixel_aspect_ratio (AVCaptureDeviceFormat *format)
AVCaptureDeviceFormat *	qt_find_best_resolution_match (AVCaptureDevice *captureDevice, const QSize &request, FourCharCode filter, bool stillImage)
AVCaptureDeviceFormat *	qt_find_best_framerate_match (AVCaptureDevice *captureDevice, FourCharCode filter, Float64 fps)
AVFrameRateRange *	qt_find_supported_framerate_range (AVCaptureDeviceFormat *format, Float64 fps)
bool	qt_format_supports_framerate (AVCaptureDeviceFormat *format, qreal fps)
bool	qt_formats_are_equal (AVCaptureDeviceFormat *f1, AVCaptureDeviceFormat *f2)
bool	qt_set_active_format (AVCaptureDevice *captureDevice, AVCaptureDeviceFormat *format, bool preserveFps)
void	qt_set_framerate_limits (AVCaptureConnection *videoConnection, qreal minFPS, qreal maxFPS)
CMTime	qt_adjusted_frame_duration (AVFrameRateRange *range, qreal fps)
void	qt_set_framerate_limits (AVCaptureDevice *captureDevice, qreal minFPS, qreal maxFPS)
void	qt_set_framerate_limits (AVCaptureDevice *captureDevice, AVCaptureConnection *videoConnection, qreal minFPS, qreal maxFPS)
AVFPSRange	qt_current_framerates (AVCaptureDevice *captureDevice, AVCaptureConnection *videoConnection)
QList< AudioValueRange >	qt_supported_sample_rates_for_format (int codecId)
QList< AudioValueRange >	qt_supported_bit_rates_for_format (int codecId)
std::optional< QList< UInt32 > >	qt_supported_channel_counts_for_format (int codecId)
QList< UInt32 >	qt_supported_channel_layout_tags_for_format (int codecId, int noChannels)

Function Documentation

qt_adjusted_frame_duration()

CMTime qt_adjusted_frame_duration	(	AVFrameRateRange *	range,
		qreal	fps
	)

Definition at line 472 of file avfcamerautility.mm.

References Q_ASSERT, and qRealToFraction().

Referenced by qt_set_framerate_limits().

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qt_connection_framerates()

QT_BEGIN_NAMESPACE AVFPSRange qt_connection_framerates

(

AVCaptureConnection *

videoConnection

)

Definition at line 22 of file avfcamerautility.mm.

References Float64, and Q_ASSERT.

qt_convert_to_capture_device_format()

AVCaptureDeviceFormat * qt_convert_to_capture_device_format	(	AVCaptureDevice *	captureDevice,
		const QCameraFormat &	cameraFormat,
		const std::function< bool(uint32_t)> &	cvFormatValidator
	)

Definition at line 99 of file avfcamerautility.mm.

References QAVFHelpers::fromCVPixelFormat(), QSize::height(), QCameraFormat::maxFrameRate, QCameraFormat::minFrameRate, QCameraFormat::pixelFormat, QCameraFormat::resolution, and QSize::width().

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qt_current_framerates()

AVFPSRange qt_current_framerates	(	AVCaptureDevice *	captureDevice,
		AVCaptureConnection *	videoConnection
	)

Definition at line 560 of file avfcamerautility.mm.

References Float64, Q_ASSERT, and Q_UNUSED.

Referenced by avfVideoSettings(), and qt_set_active_format().

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qt_device_format_framerates()

QVector< AVFPSRange > qt_device_format_framerates

(

AVCaptureDeviceFormat *

format

)

Definition at line 192 of file avfcamerautility.mm.

References Q_ASSERT, and QList< T >::reserve().

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qt_device_format_high_resolution()

QSize qt_device_format_high_resolution

(

AVCaptureDeviceFormat *

format

)

Definition at line 180 of file avfcamerautility.mm.

References Q_ASSERT.

Referenced by AVFImageCapture::applySettings(), AVFImageCapture::imageSettings(), and qt_find_best_resolution_match().

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qt_device_format_pixel_aspect_ratio()

QSize qt_device_format_pixel_aspect_ratio

(

AVCaptureDeviceFormat *

format

)

Definition at line 208 of file avfcamerautility.mm.

References Q_ASSERT, Q_FUNC_INFO, qAbs(), qCDebug, and qRealToFraction().

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qt_device_format_resolution()

QSize qt_device_format_resolution

(

AVCaptureDeviceFormat *

format

)

Definition at line 171 of file avfcamerautility.mm.

Referenced by AVFImageCapture::imageSettings(), qt_find_best_resolution_match(), and qt_unique_device_formats().

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qt_find_best_framerate_match()

AVCaptureDeviceFormat * qt_find_best_framerate_match	(	AVCaptureDevice *	captureDevice,
		FourCharCode	filter,
		Float64	fps
	)

Definition at line 301 of file avfcamerautility.mm.

References QList< T >::begin(), QList< T >::end(), epsilon, QList< T >::erase(), Float64, i, match(), Q_ASSERT, qAbs(), qt_unique_device_formats(), and QList< T >::size().

Referenced by avfVideoSettings().

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qt_find_best_resolution_match()

AVCaptureDeviceFormat * qt_find_best_resolution_match	(	AVCaptureDevice *	captureDevice,
		const QSize &	request,
		FourCharCode	filter,
		bool	stillImage
	)

Definition at line 234 of file avfcamerautility.mm.

References area(), QList< T >::first(), i, QSize::isNull(), QSize::isValid(), next, Q_ASSERT, qAbs(), qt_device_format_high_resolution(), qt_device_format_resolution(), qt_unique_device_formats(), request, QList< T >::reserve(), and QList< T >::size().

Referenced by AVFImageCapture::applySettings(), and avfVideoSettings().

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qt_find_supported_framerate_range()

AVFrameRateRange * qt_find_supported_framerate_range	(	AVCaptureDeviceFormat *	format,
		Float64	fps
	)

Definition at line 346 of file avfcamerautility.mm.

References e, epsilon, Float64, i, match(), Q_ASSERT, and qAbs().

Referenced by qt_set_framerate_limits().

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qt_format_supports_framerate()

bool qt_format_supports_framerate	(	AVCaptureDeviceFormat *	format,
		qreal	fps
	)

Definition at line 378 of file avfcamerautility.mm.

References epsilon.

Referenced by avfVideoSettings().

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qt_formats_are_equal()

bool qt_formats_are_equal	(	AVCaptureDeviceFormat *	f1,
		AVCaptureDeviceFormat *	f2
	)

Definition at line 391 of file avfcamerautility.mm.

Referenced by qt_set_active_format().

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qt_set_active_format()

bool qt_set_active_format	(	AVCaptureDevice *	captureDevice,
		AVCaptureDeviceFormat *	format,
		bool	preserveFps
	)

Definition at line 402 of file avfcamerautility.mm.

References lock, qt_current_framerates(), qt_formats_are_equal(), qt_set_framerate_limits(), and qWarning.

Referenced by AVFImageCapture::applySettings(), and avfVideoSettings().

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qt_set_framerate_limits() [1/3]

void qt_set_framerate_limits	(	AVCaptureConnection *	videoConnection,
		qreal	minFPS,
		qreal	maxFPS
	)

Definition at line 441 of file avfcamerautility.mm.

References Q_ASSERT, Q_FUNC_INFO, and qCDebug.

Referenced by avfVideoSettings(), qt_set_active_format(), and qt_set_framerate_limits().

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qt_set_framerate_limits() [2/3]

void qt_set_framerate_limits	(	AVCaptureDevice *	captureDevice,
		AVCaptureConnection *	videoConnection,
		qreal	minFPS,
		qreal	maxFPS
	)

Definition at line 552 of file avfcamerautility.mm.

References Q_ASSERT, Q_UNUSED, and qt_set_framerate_limits().

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qt_set_framerate_limits() [3/3]

void qt_set_framerate_limits	(	AVCaptureDevice *	captureDevice,
		qreal	minFPS,
		qreal	maxFPS
	)

Definition at line 491 of file avfcamerautility.mm.

References lock, Q_ASSERT, Q_FUNC_INFO, qCDebug, qt_adjusted_frame_duration(), and qt_find_supported_framerate_range().

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qt_supported_bit_rates_for_format()

QList< AudioValueRange > qt_supported_bit_rates_for_format

(

int

codecId

)

Definition at line 612 of file avfcamerautility.mm.

References codecId(), and i.

Referenced by avfAudioSettings().

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qt_supported_channel_counts_for_format()

std::optional< QList< UInt32 > > qt_supported_channel_counts_for_format

(

int

codecId

)

Definition at line 643 of file avfcamerautility.mm.

References codecId(), and i.

Referenced by avfAudioSettings().

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qt_supported_channel_layout_tags_for_format()

QList< UInt32 > qt_supported_channel_layout_tags_for_format	(	int	codecId,
		int	noChannels
	)

Definition at line 680 of file avfcamerautility.mm.

References codecId(), and i.

Referenced by avfAudioSettings().

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qt_supported_sample_rates_for_format()

QList< AudioValueRange > qt_supported_sample_rates_for_format

(

int

codecId

)

Definition at line 581 of file avfcamerautility.mm.

References codecId(), and i.

Referenced by avfAudioSettings().

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qt_unique_device_formats()

QVector< AVCaptureDeviceFormat * > qt_unique_device_formats	(	AVCaptureDevice *	captureDevice,
		FourCharCode	filter
	)

Definition at line 127 of file avfcamerautility.mm.

References codec, i, QSize::isNull(), QSize::isValid(), Q_ASSERT, and qt_device_format_resolution().

Referenced by qt_find_best_framerate_match(), and qt_find_best_resolution_match().

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