sergiotarxz
/
libvips
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

fix yafrtest

This commit is contained in:
John Cupitt 2008-10-28 18:17:34 +00:00
parent 20aa5acb1b
commit ae1763ae50
5 changed files with 79 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
TODO
View File

@ -1,3 +1,19 @@
- built with O2, experiment with
- floorf()
- try commenting out the thing that calculates cardinal_one etc. to get
an idea of the possible speedup with LUTs
- time for uchar vs. vips-bilinear and new bilinear and float yafr
- can we build and time gegl?
add a vips_interpolate_get_method() which returns the function pointer, use
that in the inner loop instead of function dispatch
done ... try editing im_affinei and time
- vips_object_print, set_name etc. need writing
- im_buf_t -> VipsBuf

11
include/vips/interpolate.h
View File

@ -56,14 +56,20 @@ typedef struct _VipsInterpolate {
} VipsInterpolate;
/* An interpolation function. This is a class method, but we have a lookup
* function for it to speed up dispatch.
*/
typedef void (*VipsInterpolateMethod)( VipsInterpolate *,
REGION *out, REGION *in,
int out_x, int out_y, double in_x, double in_y );
typedef struct _VipsInterpolateClass {
VipsObjectClass parent_class;
/* Write to pixel out(x,y), interpolating from in(x,y). The caller has
* to set the regions up.
*/
void (*interpolate)( VipsInterpolate *, REGION *out, REGION *in,
int out_x, int out_y, double in_x, double in_y );
VipsInterpolateMethod interpolate;
/* This interpolator needs a window this many pixels across and down.
*/
@ -77,6 +83,7 @@ typedef struct _VipsInterpolateClass {
GType vips_interpolate_get_type( void );
void vips_interpolate( VipsInterpolate *interpolate, REGION *out, REGION *in,
int out_x, int out_y, double in_x, double in_y );
VipsInterpolateMethod vips_interpolate_get_method( VipsInterpolate * );
int vips_interpolate_get_window_size( VipsInterpolate *interpolate );
/* Nearest class starts.

5
libsrc/mosaicing/im_affinei.c
View File

@ -213,6 +213,8 @@ affinei_gen( REGION *or, void *seq, void *a, void *b )
const int window_size =
vips_interpolate_get_window_size( affine->interpolate );
const int half_window_size = window_size / 2;
VipsInterpolateMethod interpolate =
vips_interpolate_get_method( affine->interpolate );
/* Output area for this call.
*/
@ -322,7 +324,8 @@ affinei_gen( REGION *or, void *seq, void *a, void *b )
q[z] = 0;
}
else {
vips_interpolate( affine->interpolate, or, ir,
interpolate( affine->interpolate,
or, ir,
x, y, ix, iy );
}

13
libsrc/mosaicing/interpolate.c
View File

@ -142,6 +142,19 @@ vips_interpolate( VipsInterpolate *interpolate, REGION *out, REGION *in,
class->interpolate( interpolate, out, in, out_x, out_y, in_x, in_y );
}
/* As above, but return the function pointer. Use this to cache method
* dispatch.
*/
VipsInterpolateMethod
vips_interpolate_get_method( VipsInterpolate *interpolate )
{
VipsInterpolateClass *class = VIPS_INTERPOLATE_GET_CLASS( interpolate );
g_assert( class->interpolate );
return( class->interpolate );
}
/* Get this interpolator's required window size.
*/
int

71
libsrc/mosaicing/yafrtest.cpp
View File

@ -1,4 +1,4 @@
/* vipsinterpolateyafr_test ... yarf as a vips interpolate class
/* vipsinterpolateyafr_test ... yafr as a vips interpolate class
*/
/*
@ -118,8 +118,8 @@ static VipsInterpolateClass *vips_interpolate_yafr_test_parent_class = NULL;
* the interior of the bichromatic region.
*/
/* Pointers to write to / read from, how much to add to move right a pixel,
* how much to add to move down a line.
/* Pointers to write to / read from, channel number, number of channels,
* how many bytes to add to move down a line.
*/
/* T is the type of pixels we are reading and writing.
@ -128,12 +128,12 @@ static VipsInterpolateClass *vips_interpolate_yafr_test_parent_class = NULL;
* for others we need float or even double.
*/
template <typename T, typename D> static inline void
template <typename T, typename D> static void inline
catrom_yafr_test(
PEL *out, PEL *in,
PEL *pout, const PEL *pin,
const int channels,
const int pixels_per_buffer_row,
const float sharpening,
const int lskip,
const double sharpening,
const float cardinal_one,
const float cardinal_two,
@ -205,26 +205,27 @@ catrom_yafr_test(
* consideration. The in pointer is assumed
* to point to uno_one when catrom_yafr_test is entered.
*/
const int pel_skip = lskip / sizeof( T );
const T uno_one = in[ 0 ];
const T uno_two = in[ channels];
const T uno_thr = in[ 2 * channels];
const T uno_fou = in[ 3 * channels];
const T uno_one = in[0 ];
const T uno_two = in[ channels ];
const T uno_thr = in[2 * channels ];
const T uno_fou = in[3 * channels ];
const T dos_one = in[ pixels_per_buffer_row * channels];
const T dos_two = in[(1 + pixels_per_buffer_row) * channels];
const T dos_thr = in[(2 + pixels_per_buffer_row) * channels];
const T dos_fou = in[(3 + pixels_per_buffer_row) * channels];
const T dos_one = in[ pel_skip];
const T dos_two = in[ channels + pel_skip];
const T dos_thr = in[2 * channels + pel_skip];
const T dos_fou = in[3 * channels + pel_skip];
const T tre_one = in[ 2 * pixels_per_buffer_row * channels];
const T tre_two = in[(1 + 2 * pixels_per_buffer_row) * channels];
const T tre_thr = in[(2 + 2 * pixels_per_buffer_row) * channels];
const T tre_fou = in[(3 + 2 * pixels_per_buffer_row) * channels];
const T tre_one = in[ 2 * pel_skip];
const T tre_two = in[ channels + 2 * pel_skip];
const T tre_thr = in[2 * channels + 2 * pel_skip];
const T tre_fou = in[3 * channels + 2 * pel_skip];
const T qua_one = in[ 3 * pixels_per_buffer_row * channels];
const T qua_two = in[(1 + 3 * pixels_per_buffer_row) * channels];
const T qua_thr = in[(2 + 3 * pixels_per_buffer_row) * channels];
const T qua_fou = in[(3 + 3 * pixels_per_buffer_row) * channels];
const T qua_one = in[ 3 * pel_skip];
const T qua_two = in[ channels + 3 * pel_skip];
const T qua_thr = in[2 * channels + 3 * pel_skip];
const T qua_fou = in[3 * channels + 3 * pel_skip];
/*
* Computation of the YAFR_TEST correction:
@ -548,8 +549,8 @@ vips_interpolate_yafr_test_interpolate( VipsInterpolate *interpolate,
/* Pel size and line size.
*/
const int channels = in->im->Bands;
const int pixels_per_buffer_row =
IM_REGION_LSKIP( in ) / (sizeof( float ) * channels);
const int lskip = IM_REGION_LSKIP( in );
const int esize = IM_IMAGE_SIZEOF_ELEMENT( in->im );
/* Where we write the result.
*/
@ -558,8 +559,8 @@ vips_interpolate_yafr_test_interpolate( VipsInterpolate *interpolate,
/* Put this in a macro to save some typing.
*/
#define CALL(T, D) \
catrom_yafr_test<T, D>(q + z, p + z, \
channels, pixels_per_buffer_row, \
catrom_yafr_test<T, D>(q + z * esize, p + z * esize, \
channels, lskip, \
yafr_test->sharpening, \
cardinal_one, \
cardinal_two, \
@ -612,21 +613,22 @@ vips_interpolate_yafr_test_interpolate( VipsInterpolate *interpolate,
case IM_BANDFMT_DOUBLE:
for( int z = 0; z < channels; z++ )
CALL( float, float );
CALL( double, double );
break;
default:
break;
}
}
static void
vips_interpolate_yafr_test_class_init( VipsInterpolateYafrTestClass *class )
vips_interpolate_yafr_test_class_init( VipsInterpolateYafrTestClass *iclass )
{
VipsInterpolateClass *interpolate_class =
VIPS_INTERPOLATE_CLASS( class );
VIPS_INTERPOLATE_CLASS( iclass );
vips_interpolate_yafr_test_parent_class =
g_type_class_peek_parent( class );
VIPS_INTERPOLATE_CLASS( g_type_class_peek_parent( iclass ) );
interpolate_class->interpolate = vips_interpolate_yafr_test_interpolate;
interpolate_class->window_size = 4;
@ -644,7 +646,7 @@ vips_interpolate_yafr_test_init( VipsInterpolateYafrTest *yafr_test )
}
GType
vips_interpolate_yafr_test_get_type( void )
vips_interpolate_yafr_test_get_type()
{
static GType type = 0;
@ -662,7 +664,8 @@ vips_interpolate_yafr_test_get_type( void )
};
type = g_type_register_static( VIPS_TYPE_INTERPOLATE,
"VipsInterpolateYafrTest", &info, 0 );
"VipsInterpolateYafrTest", &info,
(GTypeFlags) 0 );
}
return( type );