Digikam::DImgScale Namespace Reference

Functions
int *	dimgCalcApoints (int s, int d, int up)
DImgScaleInfo *	dimgCalcScaleInfo (const DImg &img, int sw, int sh, int dw, int dh, bool aa)
int *	dimgCalcXPoints (int sw, int dw)
uint **	dimgCalcYPoints (uint *const src, int sw, int sh, int dh)
ullong **	dimgCalcYPoints16 (ullong *const src, int sw, int sh, int dh)
void	dimgSampleRGBA (DImgScaleInfo *const isi, uint *const dest, int dxx, int dyy, int dw, int dh, int dow)
void	dimgSampleRGBA (DImgScaleInfo *const isi, uint *const dest, int dxx, int dyy, int dw, int dh, int dow, int clip_dx, int clip_dy, int clip_dw, int clip_dh)
void	dimgSampleRGBA16 (DImgScaleInfo *const isi, ullong *const dest, int dxx, int dyy, int dw, int dh, int dow)
void	dimgSampleRGBA16 (DImgScaleInfo *const isi, ullong *const dest, int dxx, int dyy, int dw, int dh, int dow, int clip_dx, int clip_dy, int clip_dw, int clip_dh)
void	dimgScaleAARGB (DImgScaleInfo *const isi, uint *const dest, int dxx, int dyy, int dw, int dh, int dow, int sow)
void	dimgScaleAARGB (DImgScaleInfo *const isi, uint *const dest, int dxx, int dyy, int dw, int dh, int dow, int sow, int clip_dx, int clip_dy, int clip_dw, int clip_dh)
void	dimgScaleAARGB16 (DImgScaleInfo *const isi, ullong *const dest, int dxx, int dyy, int dw, int dh, int dow, int sow)
void	dimgScaleAARGB16 (DImgScaleInfo *const isi, ullong *const dest, int dxx, int dyy, int dw, int dh, int dow, int sow, int clip_dx, int clip_dy, int clip_dw, int clip_dh)
void	dimgScaleAARGBA (DImgScaleInfo *const isi, uint *const dest, int dxx, int dyy, int dw, int dh, int dow, int sow)
void	dimgScaleAARGBA (DImgScaleInfo *const isi, uint *const dest, int dxx, int dyy, int dw, int dh, int dow, int sow, int clip_dx, int clip_dy, int clip_dw, int clip_dh)
void	dimgScaleAARGBA16 (DImgScaleInfo *const isi, ullong *const dest, int dxx, int dyy, int dw, int dh, int dow, int sow)
void	dimgScaleAARGBA16 (DImgScaleInfo *const isi, ullong *const dest, int dxx, int dyy, int dw, int dh, int dow, int sow, int clip_dx, int clip_dy, int clip_dw, int clip_dh)

Function Documentation

dimgCalcApoints()

int * Digikam::DImgScale::dimgCalcApoints	(	int	s,
		int	d,
		int	up
	)

Referenced by dimgCalcScaleInfo().

dimgCalcScaleInfo()

DImgScaleInfo * Digikam::DImgScale::dimgCalcScaleInfo	(	const DImg &	img,
		int	sw,
		int	sh,
		int	dw,
		int	dh,
		bool	aa
	)

References Digikam::DImg::bits(), dimgCalcApoints(), dimgCalcXPoints(), dimgCalcYPoints(), dimgCalcYPoints16(), Digikam::DImg::height, Digikam::DImg::sixteenBit, and Digikam::DImg::width.

Referenced by Digikam::DImg::smoothScaleClipped(), and Digikam::DImg::smoothScaleSection().

dimgCalcXPoints()

int * Digikam::DImgScale::dimgCalcXPoints	(	int	sw,
		int	dw
	)

Referenced by dimgCalcScaleInfo().

dimgCalcYPoints()

uint ** Digikam::DImgScale::dimgCalcYPoints	(	uint *const	src,
		int	sw,
		int	sh,
		int	dh
	)

Referenced by dimgCalcScaleInfo().

dimgCalcYPoints16()

ullong ** Digikam::DImgScale::dimgCalcYPoints16	(	ullong *const	src,
		int	sw,
		int	sh,
		int	dh
	)

Referenced by dimgCalcScaleInfo().

dimgSampleRGBA() [1/2]

void Digikam::DImgScale::dimgSampleRGBA	(	DImgScaleInfo *const	isi,
		uint *const	dest,
		int	dxx,
		int	dyy,
		int	dw,
		int	dh,
		int	dow
	)

For internal scale by pixel sampling only not smoothed in 8 bits RGBA. Arguments: isi: scale info dest: destination image data dxx: destination x location corresponding to start x of source section dyy: destination y location corresponding to start y of source section dw: destination width dh: destination height dow: destination scanline width

dimgSampleRGBA() [2/2]

void Digikam::DImgScale::dimgSampleRGBA	(	DImgScaleInfo *const	isi,
		uint *const	dest,
		int	dxx,
		int	dyy,
		int	dw,
		int	dh,
		int	dow,
		int	clip_dx,
		int	clip_dy,
		int	clip_dw,
		int	clip_dh
	)

For internal scale by pixel sampling only not smoothed by area sampling in 8 bits RGBA. Arguments: isi: scale info dest: destination image data dxx: destination x location corresponding to start x of source section dyy: destination y location corresponding to start y of source section dw: destination width dh: destination height dow: destination scanline width clip_dx: clipped destination x location corresponding to start x clip_dy: clipped destination y location corresponding to start y clip_dw: clipped destination width clip_dh: clipped destination height

dimgSampleRGBA16() [1/2]

void Digikam::DImgScale::dimgSampleRGBA16	(	DImgScaleInfo *const	isi,
		ullong *const	dest,
		int	dxx,
		int	dyy,
		int	dw,
		int	dh,
		int	dow
	)

For internal scale by pixel sampling only not smoothed in 16 bits RGBA. Arguments: isi: scale info dest: destination image data dxx: destination x location corresponding to start x of source section dyy: destination y location corresponding to start y of source section dw: destination width dh: destination height dow: destination scanline width

dimgSampleRGBA16() [2/2]

void Digikam::DImgScale::dimgSampleRGBA16	(	DImgScaleInfo *const	isi,
		ullong *const	dest,
		int	dxx,
		int	dyy,
		int	dw,
		int	dh,
		int	dow,
		int	clip_dx,
		int	clip_dy,
		int	clip_dw,
		int	clip_dh
	)

For internal scale by pixel sampling only not smoothed by area sampling in 16 bits RGBA Arguments: isi: scale info dest: destination image data dxx: destination x location corresponding to start x of source section dyy: destination y location corresponding to start y of source section dw: destination width dh: destination height dow: destination scanline width clip_dx: clipped destination x location corresponding to start x clip_dy: clipped destination y location corresponding to start y clip_dw: clipped destination width clip_dh: clipped destination height

dimgScaleAARGB() [1/2]

void Digikam::DImgScale::dimgScaleAARGB	(	DImgScaleInfo *const	isi,
		uint *const	dest,
		int	dxx,
		int	dyy,
		int	dw,
		int	dh,
		int	dow,
		int	sow
	)

For internal scale in 8 bits RGB, ignore the Alpha byte

Arguments: isi: scale info dest: destination image data dxx: destination x location corresponding to start x of source section dyy: destination y location corresponding to start y of source section dw: destination width dh: destination height dow: destination scanline width sow: source scanline width

Referenced by Digikam::DImg::smoothScaleClipped(), and Digikam::DImg::smoothScaleSection().

dimgScaleAARGB() [2/2]

void Digikam::DImgScale::dimgScaleAARGB	(	DImgScaleInfo *const	isi,
		uint *const	dest,
		int	dxx,
		int	dyy,
		int	dw,
		int	dh,
		int	dow,
		int	sow,
		int	clip_dx,
		int	clip_dy,
		int	clip_dw,
		int	clip_dh
	)

For internal scale by area sampling in 8 bits RGB, ignore the Alpha byte Arguments: isi: scale info dest: destination image data dxx: destination x location corresponding to start x of source section dyy: destination y location corresponding to start y of source section dw: destination width dh: destination height dow: destination scanline width sow: source scanline width clip_dx: clipped destination x location corresponding to start x clip_dy: clipped destination y location corresponding to start y clip_dw: clipped destination width clip_dh: clipped destination height

fully optimized (i think) - only change of algorithm can help if we're scaling down horizontally & vertically

References A_VAL, B_VAL, G_VAL, INV_XAP, INV_YAP, R_VAL, XAP, and YAP.

dimgScaleAARGB16() [1/2]

void Digikam::DImgScale::dimgScaleAARGB16	(	DImgScaleInfo *const	isi,
		ullong *const	dest,
		int	dxx,
		int	dyy,
		int	dw,
		int	dh,
		int	dow,
		int	sow
	)

For internal scale in 16 bits RGB, ignore the Alpha byte Arguments: isi: scale info dest: destination image data dxx: destination x location corresponding to start x of source section dyy: destination y location corresponding to start y of source section dw: destination width dh: destination height dow: destination scanline width sow: source scanline width

Referenced by Digikam::DImg::smoothScaleClipped(), and Digikam::DImg::smoothScaleSection().

dimgScaleAARGB16() [2/2]

void Digikam::DImgScale::dimgScaleAARGB16	(	DImgScaleInfo *const	isi,
		ullong *const	dest,
		int	dxx,
		int	dyy,
		int	dw,
		int	dh,
		int	dow,
		int	sow,
		int	clip_dx,
		int	clip_dy,
		int	clip_dw,
		int	clip_dh
	)

For internal scale by area sampling in 16 bits RGB, ignore the Alpha byte Arguments: isi: scale info dest: destination image data dxx: destination x location corresponding to start x of source section dyy: destination y location corresponding to start y of source section dw: destination width dh: destination height dow: destination scanline width sow: source scanline width clip_dx: clipped destination x location corresponding to start x clip_dy: clipped destination y location corresponding to start y clip_dw: clipped destination width clip_dh: clipped destination height

References A_VAL16, B_VAL16, G_VAL16, INV_XAP, INV_YAP, R_VAL16, XAP, and YAP.

dimgScaleAARGBA() [1/2]

void Digikam::DImgScale::dimgScaleAARGBA	(	DImgScaleInfo *const	isi,
		uint *const	dest,
		int	dxx,
		int	dyy,
		int	dw,
		int	dh,
		int	dow,
		int	sow
	)

For internal scale in 8 bits RGBA Arguments: isi: scale info dest: destination image data dxx: destination x location corresponding to start x of source section dyy: destination y location corresponding to start y of source section dw: destination width dh: destination height dow: destination scanline width sow: source scanline width

Referenced by Digikam::DImg::smoothScaleClipped(), and Digikam::DImg::smoothScaleSection().

dimgScaleAARGBA() [2/2]

void Digikam::DImgScale::dimgScaleAARGBA	(	DImgScaleInfo *const	isi,
		uint *const	dest,
		int	dxx,
		int	dyy,
		int	dw,
		int	dh,
		int	dow,
		int	sow,
		int	clip_dx,
		int	clip_dy,
		int	clip_dw,
		int	clip_dh
	)

For internal scale by area sampling in 8 bits RGBA Arguments: isi: scale info dest: destination image data dxx: destination x location corresponding to start x of source section dyy: destination y location corresponding to start y of source section dw: destination width dh: destination height dow: destination scanline width sow: source scanline width clip_dx: clipped destination x location corresponding to start x clip_dy: clipped destination y location corresponding to start y clip_dw: clipped destination width clip_dh: clipped destination height

'Correct' version, with math units prepared for MMXification: The operation 'b = (b * c) >> 16' translates to pmulhw, so the operation 'b = (b * c) >> d' would translate to psllw (16 - d), mmb; pmulh mmc, mmb

References A_VAL, B_VAL, G_VAL, INV_XAP, INV_YAP, R_VAL, XAP, and YAP.

dimgScaleAARGBA16() [1/2]

void Digikam::DImgScale::dimgScaleAARGBA16	(	DImgScaleInfo *const	isi,
		ullong *const	dest,
		int	dxx,
		int	dyy,
		int	dw,
		int	dh,
		int	dow,
		int	sow
	)

For internal scale in 16 bits RGBA Arguments: isi: scale info dest: destination image data dxx: destination x location corresponding to start x of source section dyy: destination y location corresponding to start y of source section dw: destination width dh: destination height dow: destination scanline width sow: source scanline width

Referenced by Digikam::DImg::smoothScaleClipped(), and Digikam::DImg::smoothScaleSection().

dimgScaleAARGBA16() [2/2]

void Digikam::DImgScale::dimgScaleAARGBA16	(	DImgScaleInfo *const	isi,
		ullong *const	dest,
		int	dxx,
		int	dyy,
		int	dw,
		int	dh,
		int	dow,
		int	sow,
		int	clip_dx,
		int	clip_dy,
		int	clip_dw,
		int	clip_dh
	)

For internal scale by area sampling in 16 bits RGBA Arguments: isi: scale info dest: destination image data dxx: destination x location corresponding to start x of source section dyy: destination y location corresponding to start y of source section dw: destination width dh: destination height dow: destination scanline width sow: source scanline width clip_dx: clipped destination x location corresponding to start x clip_dy: clipped destination y location corresponding to start y clip_dw: clipped destination width clip_dh: clipped destination height

'Correct' version, with math units prepared for MMXification: The operation 'b = (b * c) >> 16' translates to pmulhw, so the operation 'b = (b * c) >> d' would translate to psllw (16 - d), mmb; pmulh mmc, mmb

References A_VAL16, B_VAL16, G_VAL16, INV_XAP, INV_YAP, R_VAL16, XAP, and YAP.