Interface for getting lines from a video frame. More...

#include <FrameSource.hh>

Inheritance diagram for openmsx::FrameSource:

[legend]

Public Types
enum	FieldType { FIELD_NONINTERLACED , FIELD_EVEN , FIELD_ODD }
	What role does this frame play in interlacing? More...

Public Member Functions
void	init (FieldType fieldType_)
	(Re)initialize an existing FrameSource. More...

FieldType	getField () const
	Gets the role this frame plays in interlacing. More...

unsigned	getHeight () const
	Gets the number of lines in this frame. More...

virtual unsigned	getLineWidth (unsigned line) const =0
	Gets the number of display pixels on the given line. More...

unsigned	getWidth () const
	Get the width of (all) lines in this frame. More...

template<typename Pixel >
Pixel	getLineColor (unsigned line) const
	Get the (single) color of the given line. More...

template<typename Pixel >
const Pixel *	getLinePtr (int line, unsigned width, Pixel *buf) const
	Gets a pointer to the pixels of the given line number. More...

template<typename Pixel >
const Pixel *	getMultiLinePtr (int line, unsigned numLines, unsigned &actualLines, unsigned width, Pixel *buf) const
	Similar to the above getLinePtr() method, but now tries to get multiple lines at once. More...

virtual const void *	getLineInfo (unsigned line, unsigned &lineWidth, void *buf, unsigned bufWidth) const =0
	Abstract implementation of getLinePtr(). More...

template<typename Pixel >
const Pixel *	getLinePtr320_240 (unsigned line, Pixel *buf) const
	Get a pointer to a given line in this frame, the frame is scaled to 320x240 pixels. More...

template<typename Pixel >
const Pixel *	getLinePtr640_480 (unsigned line, Pixel *buf) const
	Get a pointer to a given line in this frame, the frame is scaled to 640x480 pixels. More...

template<typename Pixel >
const Pixel *	getLinePtr960_720 (unsigned line, Pixel *buf) const
	Get a pointer to a given line in this frame, the frame is scaled to 960x720 pixels. More...

virtual unsigned	getRowLength () const
	Returns the distance (in pixels) between two consecutive lines. More...

const PixelFormat &	getPixelFormat () const

Protected Member Functions
	FrameSource (const PixelFormat &format)

	~FrameSource ()=default

void	setHeight (unsigned height_)

virtual bool	hasContiguousStorage () const
	Returns true when two consecutive rows are also consecutive in memory. More...

template<typename Pixel >
void	scaleLine (const Pixel in, Pixel out, unsigned inWidth, unsigned outWidth) const

Detailed Description

Interface for getting lines from a video frame.

Definition at line 14 of file FrameSource.hh.

Member Enumeration Documentation

◆ FieldType

enum openmsx::FrameSource::FieldType

What role does this frame play in interlacing?

Enumerator
FIELD_NONINTERLACED	Interlacing is off for this frame.
FIELD_EVEN	Interlacing is on and this is an even frame.
FIELD_ODD	Interlacing is on and this is an odd frame.

Definition at line 19 of file FrameSource.hh.

Constructor & Destructor Documentation

◆ FrameSource()

openmsx::FrameSource::FrameSource ( const PixelFormat & format )

explicitprotected

Definition at line 15 of file FrameSource.cc.

References openmsx::DiskImageUtils::format().

◆ ~FrameSource()

openmsx::FrameSource::~FrameSource ( )

protecteddefault

Member Function Documentation

◆ getField()

FieldType openmsx::FrameSource::getField ( ) const

inline

Gets the role this frame plays in interlacing.

Definition at line 38 of file FrameSource.hh.

◆ getHeight()

unsigned openmsx::FrameSource::getHeight ( ) const

inline

Gets the number of lines in this frame.

Definition at line 44 of file FrameSource.hh.

Referenced by openmsx::Scaler1< Pixel >::dispatchScale(), openmsx::Scaler2< Pixel >::dispatchScale(), openmsx::Scaler3< Pixel >::dispatchScale(), openmsx::RawFrame::getLineInfo(), getLinePtr(), getLinePtr320_240(), getLinePtr640_480(), getLinePtr960_720(), openmsx::RawFrame::getLineWidth(), openmsx::Deflicker::init(), openmsx::SuperImposedFrame::init(), openmsx::DeinterlacedFrame::init(), openmsx::DoubledFrame::init(), openmsx::GLPostProcessor::paint(), openmsx::RawFrame::setBlank(), openmsx::RawFrame::setLineWidth(), and openmsx::SuperImposedVideoFrame< Pixel >::SuperImposedVideoFrame().

◆ getLineColor()

template<typename Pixel >

Pixel openmsx::FrameSource::getLineColor ( unsigned line ) const

inline

Get the (single) color of the given line.

Typically this will be used to get the color of a vertical border line. But it's fine to call this on non-border lines as well, in that case the color of the first pixel of the line is returned.

Definition at line 74 of file FrameSource.hh.

References ALIGNAS_SSE, and getLineInfo().

Referenced by openmsx::Scaler1< Pixel >::scaleBlank1to1(), openmsx::Scaler2< Pixel >::scaleBlank1to1(), openmsx::Scaler2< Pixel >::scaleBlank1to2(), openmsx::SaI2xScaler< Pixel >::scaleBlank1to2(), openmsx::Scaler3< Pixel >::scaleBlank1to3(), openmsx::RGBTriplet3xScaler< Pixel >::scaleBlank1to3(), openmsx::SaI3xScaler< Pixel >::scaleBlank1to3(), openmsx::Scaler1< Pixel >::scaleBlank2to1(), openmsx::Scaler3< Pixel >::scaleBlank2to3(), and openmsx::RGBTriplet3xScaler< Pixel >::scaleBlank2to3().

◆ getLineInfo()

virtual const void* openmsx::FrameSource::getLineInfo	(	unsigned	line,
		unsigned &	lineWidth,
		void *	buf,
		unsigned	bufWidth
	)		const

pure virtual

Abstract implementation of getLinePtr().

Pixel type is unspecified (implementations that care about the exact type should get it via some other mechanism).

Parameters

line	The line number for the requested line.
lineWidth	Output parameter, the width of the returned line in pixel units.
buf	Buffer space that can optionally be used by the implementation.
bufWidth	The size of the above buffer, in pixel units.

Returns: Pointer to the first pixel of the requested line. This might be the same as the given 'buf' parameter or it might be some internal buffer.

Implemented in openmsx::SuperImposedVideoFrame< Pixel >, and openmsx::RawFrame.

Referenced by getLineColor(), getLinePtr(), and getMultiLinePtr().

◆ getLinePtr()

template<typename Pixel >

const Pixel* openmsx::FrameSource::getLinePtr	(	int	line,
		unsigned	width,
		Pixel *	buf
	)		const

inline

Gets a pointer to the pixels of the given line number.

The line returned is guaranteed to have the given width. If the original line had a different width the result will be computed in the provided work buffer. So that buffer should be big enough to hold the scaled line. This also means the lifetime of the result is tied to the lifetime of that work buffer. In any case the return value of this function will point to the line data (some internal buffer or the work buffer).

Definition at line 91 of file FrameSource.hh.

References getHeight(), getLineInfo(), gl::max(), and scaleLine().

Referenced by openmsx::doHQScale2(), openmsx::doHQScale3(), getLinePtr320_240(), getLinePtr640_480(), getLinePtr960_720(), getMultiLinePtr(), openmsx::Scaler1< Pixel >::scale1x1to1x1(), openmsx::Scaler2< Pixel >::scale1x1to1x1(), openmsx::Scaler2< Pixel >::scale1x1to1x2(), openmsx::SaI2xScaler< Pixel >::scale1x1to1x2(), openmsx::Scale2xScaler< Pixel >::scale1x1to1x2(), openmsx::SaI2xScaler< Pixel >::scale1x1to2x2(), openmsx::Scale2xScaler< Pixel >::scale1x1to2x2(), openmsx::Scale3xScaler< Pixel >::scale1x1to3x3(), openmsx::Scaler1< Pixel >::scale1x2to1x1(), openmsx::MLAAScaler< Pixel >::scaleImage(), openmsx::GLHQLiteScaler::uploadBlock(), and openmsx::GLHQScaler::uploadBlock().

◆ getLinePtr320_240()

template<typename Pixel >

template const uint32_t * openmsx::FrameSource::getLinePtr320_240< uint32_t >	(	unsigned	line,
		Pixel *	buf
	)		const

Get a pointer to a given line in this frame, the frame is scaled to 320x240 pixels.

The difference between this method and getLinePtr() is that this method also does vertical scaling. This is used for video recording.

Definition at line 21 of file FrameSource.cc.

References ALIGNAS_SSE, getHeight(), and getLinePtr().

◆ getLinePtr640_480()

template<typename Pixel >

template const uint32_t * openmsx::FrameSource::getLinePtr640_480< uint32_t >	(	unsigned	line,
		Pixel *	buf
	)		const

Get a pointer to a given line in this frame, the frame is scaled to 640x480 pixels.

Same as getLinePtr320_240, but then for a higher resolution output.

Definition at line 38 of file FrameSource.cc.

References getHeight(), and getLinePtr().

◆ getLinePtr960_720()

template<typename Pixel >

template const uint32_t * openmsx::FrameSource::getLinePtr960_720< uint32_t >	(	unsigned	line,
		Pixel *	buf
	)		const

Get a pointer to a given line in this frame, the frame is scaled to 960x720 pixels.

Same as getLinePtr320_240, but then for a higher resolution output.

Definition at line 49 of file FrameSource.cc.

References ALIGNAS_SSE, getHeight(), and getLinePtr().

◆ getLineWidth()

virtual unsigned openmsx::FrameSource::getLineWidth ( unsigned line ) const

pure virtual

Gets the number of display pixels on the given line.

Returns: line width (=1 for a vertical border line)

Implemented in openmsx::SuperImposedVideoFrame< Pixel >, openmsx::RawFrame, and openmsx::Deflicker.

Referenced by openmsx::PostProcessor::getLineWidth(), getMultiLinePtr(), getWidth(), openmsx::SaI2xScaler< Pixel >::scaleBlank1to2(), openmsx::RGBTriplet3xScaler< Pixel >::scaleBlank1to3(), and openmsx::SaI3xScaler< Pixel >::scaleBlank1to3().

◆ getMultiLinePtr()

template<typename Pixel >

const Pixel* openmsx::FrameSource::getMultiLinePtr	(	int	line,
		unsigned	numLines,
		unsigned &	actualLines,
		unsigned	width,
		Pixel *	buf
	)		const

inline

Similar to the above getLinePtr() method, but now tries to get multiple lines at once.

This is not always possible, so the actual number of lines is returned in 'actualLines', it will always be at least 1.

Definition at line 113 of file FrameSource.hh.

References getLineInfo(), getLinePtr(), getLineWidth(), hasContiguousStorage(), and scaleLine().

◆ getPixelFormat()

const PixelFormat& openmsx::FrameSource::getPixelFormat ( ) const

inline

Definition at line 190 of file FrameSource.hh.

Referenced by openmsx::yuv2rgb::convert(), and openmsx::PostProcessor::takeRawScreenShot().

◆ getRowLength()

virtual unsigned openmsx::FrameSource::getRowLength ( ) const

inlinevirtual

Returns the distance (in pixels) between two consecutive lines.

Is meant to be used in combination with getMultiLinePtr(). The result is only meaningful when hasContiguousStorage() returns true (also only in that case does getMultiLinePtr() return more than 1 line).

Reimplemented in openmsx::RawFrame.

Definition at line 186 of file FrameSource.hh.

◆ getWidth()

unsigned openmsx::FrameSource::getWidth ( ) const

inline

Get the width of (all) lines in this frame.

This only makes sense when all lines have the same width, so this methods asserts that all lines actually have the same width. This is for example not always the case for MSX frames, but it is for video frames (for superimpose).

Definition at line 59 of file FrameSource.hh.

References getLineWidth(), and xrange().

◆ hasContiguousStorage()

virtual bool openmsx::FrameSource::hasContiguousStorage ( ) const

inlineprotectedvirtual

Returns true when two consecutive rows are also consecutive in memory.

Reimplemented in openmsx::RawFrame.

Definition at line 203 of file FrameSource.hh.

Referenced by getMultiLinePtr().

◆ init()

void openmsx::FrameSource::init ( FieldType fieldType_ )

inline

(Re)initialize an existing FrameSource.

This method sets the Fieldtype and flushes the 'getLinePtr' buffers.

Definition at line 34 of file FrameSource.hh.

Referenced by openmsx::Deflicker::init(), openmsx::DeinterlacedFrame::init(), openmsx::DoubledFrame::init(), and openmsx::RawFrame::RawFrame().

◆ scaleLine()

template<typename Pixel >

template void openmsx::FrameSource::scaleLine< uint32_t >	(	const Pixel *	in,
		Pixel *	out,
		unsigned	inWidth,
		unsigned	outWidth
	)		const

protected

Definition at line 70 of file FrameSource.cc.

References gl::scale(), unlikely, UNREACHABLE, and VLA_SSE_ALIGNED.

Referenced by getLinePtr(), and getMultiLinePtr().

◆ setHeight()

void openmsx::FrameSource::setHeight ( unsigned height_ )

inlineprotected

Definition at line 198 of file FrameSource.hh.

Referenced by openmsx::Deflicker::init(), openmsx::SuperImposedFrame::init(), openmsx::DeinterlacedFrame::init(), openmsx::DoubledFrame::init(), openmsx::RawFrame::RawFrame(), and openmsx::SuperImposedVideoFrame< Pixel >::SuperImposedVideoFrame().

The documentation for this class was generated from the following files:

Public Types

Public Member Functions

Protected Member Functions

Detailed Description

Member Enumeration Documentation

◆ FieldType

Constructor & Destructor Documentation

◆ FrameSource()

◆ ~FrameSource()

Member Function Documentation

◆ getField()

◆ getHeight()

◆ getLineColor()

◆ getLineInfo()

◆ getLinePtr()

◆ getLinePtr320_240()

◆ getLinePtr640_480()

◆ getLinePtr960_720()

◆ getLineWidth()

◆ getMultiLinePtr()

◆ getPixelFormat()

◆ getRowLength()

◆ getWidth()

◆ hasContiguousStorage()

◆ init()

◆ scaleLine()

◆ setHeight()