+++ /dev/null
-/* GdkPixbuf library - Scaling and compositing functions
- *
- * Original:
- * Copyright (C) 2000 Red Hat, Inc
- * Author: Owen Taylor <otaylor@redhat.com>
- *
- * Modification for MLT:
- * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
- * Author: Dan Dennedy <dan@dennedy.org>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#include <math.h>
-#include <glib.h>
-#include <stdio.h>
-
-#include "pixops.h"
-
-#define SUBSAMPLE_BITS 4
-#define SUBSAMPLE (1 << SUBSAMPLE_BITS)
-#define SUBSAMPLE_MASK ((1 << SUBSAMPLE_BITS)-1)
-#define SCALE_SHIFT 16
-
-typedef struct _PixopsFilter PixopsFilter;
-typedef struct _PixopsFilterDimension PixopsFilterDimension;
-
-struct _PixopsFilterDimension
-{
- int n;
- double offset;
- double *weights;
-};
-
-struct _PixopsFilter
-{
- PixopsFilterDimension x;
- PixopsFilterDimension y;
- double overall_alpha;
-};
-
-typedef guchar *( *PixopsLineFunc ) ( int *weights, int n_x, int n_y,
- guchar *dest, int dest_x, guchar *dest_end,
- guchar **src,
- int x_init, int x_step, int src_width );
-
-typedef void ( *PixopsPixelFunc ) ( guchar *dest, guint y1, guint cr, guint y2, guint cb );
-
-
-/* mmx function declarations */
-#if defined(USE_MMX) && !defined(ARCH_X86_64)
-guchar *pixops_scale_line_22_yuv_mmx ( guint32 weights[ 16 ][ 8 ], guchar *p, guchar *q1, guchar *q2, int x_step, guchar *p_stop, int x_init, int destx );
-int pixops_have_mmx ( void );
-#endif
-
-static inline int
-get_check_shift ( int check_size )
-{
- int check_shift = 0;
- g_return_val_if_fail ( check_size >= 0, 4 );
-
- while ( !( check_size & 1 ) )
- {
- check_shift++;
- check_size >>= 1;
- }
-
- return check_shift;
-}
-
-static inline void
-pixops_scale_nearest ( guchar *dest_buf,
- int render_x0,
- int render_y0,
- int render_x1,
- int render_y1,
- int dest_rowstride,
- const guchar *src_buf,
- int src_width,
- int src_height,
- int src_rowstride,
- double scale_x,
- double scale_y )
-{
- register int i, j;
- register int x_step = ( 1 << SCALE_SHIFT ) / scale_x;
- register int y_step = ( 1 << SCALE_SHIFT ) / scale_y;
- register int x, x_scaled;
-
- for ( i = 0; i < ( render_y1 - render_y0 ); i++ )
- {
- const guchar *src = src_buf + ( ( ( i + render_y0 ) * y_step + ( y_step >> 1 ) ) >> SCALE_SHIFT ) * src_rowstride;
- guchar *dest = dest_buf + i * dest_rowstride;
- x = render_x0 * x_step + ( x_step >> 1 );
-
- for ( j = 0; j < ( render_x1 - render_x0 ); j++ )
- {
- x_scaled = x >> SCALE_SHIFT;
- *dest++ = src[ x_scaled << 1 ];
- *dest++ = src[ ( ( x_scaled >> 1 ) << 2 ) + ( ( j & 1 ) << 1 ) + 1 ];
- x += x_step;
- }
- }
-}
-
-
-static inline guchar *
-scale_line ( int *weights, int n_x, int n_y,
- guchar *dest, int dest_x, guchar *dest_end,
- guchar **src,
- int x_init, int x_step, int src_width )
-{
- register int x = x_init;
- register int i, j, x_scaled, y_index, uv_index;
-
- while ( dest < dest_end )
- {
- unsigned int y = 0, uv = 0;
- int *pixel_weights = weights + ( ( x >> ( SCALE_SHIFT - SUBSAMPLE_BITS ) ) & SUBSAMPLE_MASK ) * n_x * n_y;
-
- x_scaled = x >> SCALE_SHIFT;
- y_index = x_scaled << 1;
- uv_index = ( ( x_scaled >> 1 ) << 2 ) + ( ( dest_x & 1 ) << 1 ) + 1;
-
- for ( i = 0; i < n_y; i++ )
- {
- int *line_weights = pixel_weights + n_x * i;
- guchar *q = src[ i ];
-
- for ( j = 0; j < n_x; j ++ )
- {
- unsigned int ta = line_weights[ j ];
-
- y += ta * q[ y_index ];
- uv += ta * q[ uv_index ];
- }
- }
-
- *dest++ = ( y + 0xffff ) >> SCALE_SHIFT;
- *dest++ = ( uv + 0xffff ) >> SCALE_SHIFT;
-
- x += x_step;
- dest_x++;
- }
-
- return dest;
-}
-
-#if defined(USE_MMX) && !defined(ARCH_X86_64)
-static inline guchar *
-scale_line_22_yuv_mmx_stub ( int *weights, int n_x, int n_y,
- guchar *dest, int dest_x, guchar *dest_end,
- guchar **src,
- int x_init, int x_step, int src_width )
-{
- guint32 mmx_weights[ 16 ][ 8 ];
- int j;
-
- for ( j = 0; j < 16; j++ )
- {
- mmx_weights[ j ][ 0 ] = 0x00010001 * ( weights[ 4 * j ] >> 8 );
- mmx_weights[ j ][ 1 ] = 0x00010001 * ( weights[ 4 * j ] >> 8 );
- mmx_weights[ j ][ 2 ] = 0x00010001 * ( weights[ 4 * j + 1 ] >> 8 );
- mmx_weights[ j ][ 3 ] = 0x00010001 * ( weights[ 4 * j + 1 ] >> 8 );
- mmx_weights[ j ][ 4 ] = 0x00010001 * ( weights[ 4 * j + 2 ] >> 8 );
- mmx_weights[ j ][ 5 ] = 0x00010001 * ( weights[ 4 * j + 2 ] >> 8 );
- mmx_weights[ j ][ 6 ] = 0x00010001 * ( weights[ 4 * j + 3 ] >> 8 );
- mmx_weights[ j ][ 7 ] = 0x00010001 * ( weights[ 4 * j + 3 ] >> 8 );
- }
-
- return pixops_scale_line_22_yuv_mmx ( mmx_weights, dest, src[ 0 ], src[ 1 ], x_step, dest_end, x_init, dest_x );
-}
-#endif /* USE_MMX */
-
-static inline guchar *
-scale_line_22_yuv ( int *weights, int n_x, int n_y,
- guchar *dest, int dest_x, guchar *dest_end,
- guchar **src,
- int x_init, int x_step, int src_width )
-{
- register int x = x_init;
- register guchar *src0 = src[ 0 ];
- register guchar *src1 = src[ 1 ];
- register unsigned int p;
- register guchar *q0, *q1;
- register int w1, w2, w3, w4;
- register int x_scaled, x_aligned, uv_index;
-
- while ( dest < dest_end )
- {
- int *pixel_weights = weights + ( ( x >> ( SCALE_SHIFT - SUBSAMPLE_BITS ) ) & SUBSAMPLE_MASK ) * 4;
-
- x_scaled = x >> SCALE_SHIFT;
-
- w1 = pixel_weights[ 0 ];
- w2 = pixel_weights[ 1 ];
- w3 = pixel_weights[ 2 ];
- w4 = pixel_weights[ 3 ];
-
- /* process Y */
- q0 = src0 + ( x_scaled << 1 );
- q1 = src1 + ( x_scaled << 1 );
- p = w1 * q0[ 0 ];
- p += w2 * q0[ 2 ];
- p += w3 * q1[ 0 ];
- p += w4 * q1[ 2 ];
- *dest++ = ( p + 0x8000 ) >> SCALE_SHIFT;
-
- /* process U/V */
- x_aligned = ( ( x_scaled >> 1 ) << 2 );
- uv_index = ( ( dest_x & 1 ) << 1 ) + 1;
-
- q0 = src0 + x_aligned;
- q1 = src1 + x_aligned;
- p = w1 * q0[ uv_index ];
- p += w3 * q1[ uv_index ];
- p += w2 * q0[ uv_index ];
- p += w4 * q1[ uv_index ];
-
- x += x_step;
- dest_x ++;
-
- *dest++ = ( p + 0x8000 ) >> SCALE_SHIFT;
- }
-
- return dest;
-}
-
-
-static inline void
-process_pixel ( int *weights, int n_x, int n_y,
- guchar *dest, int dest_x, int dest_channels,
- guchar **src, int src_channels,
- int x_start, int src_width )
-{
- register unsigned int y = 0, uv = 0;
- register int i, j;
- int uv_index = ( ( dest_x & 1 ) << 1 ) + 1;
-
- for ( i = 0; i < n_y; i++ )
- {
- int *line_weights = weights + n_x * i;
-
- for ( j = 0; j < n_x; j++ )
- {
- unsigned int ta = 0xff * line_weights[ j ];
-
- if ( x_start + j < 0 )
- {
- y += ta * src[ i ][ 0 ];
- uv += ta * src[ i ][ uv_index ];
- }
- else if ( x_start + j < src_width )
- {
- y += ta * src[ i ][ ( x_start + j ) << 1 ];
- uv += ta * src[ i ][ ( ( ( x_start + j ) >> 1 ) << 2) + uv_index ];
- }
- else
- {
- y += ta * src[ i ][ ( src_width - 1 ) << 1 ];
- uv += ta * src[ i ][ ( ( ( src_width - 1 ) >> 1 ) << 2) + uv_index ];
- }
- }
- }
-
- *dest++ = ( y + 0xffffff ) >> 24;
- *dest++ = ( uv + 0xffffff ) >> 24;
-}
-
-
-static inline void
-correct_total ( int *weights,
- int n_x,
- int n_y,
- int total,
- double overall_alpha )
-{
- int correction = ( int ) ( 0.5 + 65536 * overall_alpha ) - total;
- int remaining, c, d, i;
-
- if ( correction != 0 )
- {
- remaining = correction;
- for ( d = 1, c = correction; c != 0 && remaining != 0; d++, c = correction / d )
- for ( i = n_x * n_y - 1; i >= 0 && c != 0 && remaining != 0; i-- )
- if ( *( weights + i ) + c >= 0 )
- {
- *( weights + i ) += c;
- remaining -= c;
- if ( ( 0 < remaining && remaining < c ) ||
- ( 0 > remaining && remaining > c ) )
- c = remaining;
- }
- }
-}
-
-
-static inline int *
-make_filter_table ( PixopsFilter *filter )
-{
- int i_offset, j_offset;
- int n_x = filter->x.n;
- int n_y = filter->y.n;
- int *weights = g_new ( int, SUBSAMPLE * SUBSAMPLE * n_x * n_y );
-
- for ( i_offset = 0; i_offset < SUBSAMPLE; i_offset++ )
- for ( j_offset = 0; j_offset < SUBSAMPLE; j_offset++ )
- {
- double weight;
- int *pixel_weights = weights + ( ( i_offset * SUBSAMPLE ) + j_offset ) * n_x * n_y;
- int total = 0;
- int i, j;
-
- for ( i = 0; i < n_y; i++ )
- for ( j = 0; j < n_x; j++ )
- {
- weight = filter->x.weights[ ( j_offset * n_x ) + j ] *
- filter->y.weights[ ( i_offset * n_y ) + i ] *
- filter->overall_alpha * 65536 + 0.5;
-
- total += ( int ) weight;
-
- *( pixel_weights + n_x * i + j ) = weight;
- }
-
- correct_total ( pixel_weights, n_x, n_y, total, filter->overall_alpha );
- }
-
- return weights;
-}
-
-
-static inline void
-pixops_process ( guchar *dest_buf,
- int render_x0,
- int render_y0,
- int render_x1,
- int render_y1,
- int dest_rowstride,
- int dest_channels,
- gboolean dest_has_alpha,
- const guchar *src_buf,
- int src_width,
- int src_height,
- int src_rowstride,
- int src_channels,
- gboolean src_has_alpha,
- double scale_x,
- double scale_y,
- int check_x,
- int check_y,
- int check_size,
- guint32 color1,
- guint32 color2,
- PixopsFilter *filter,
- PixopsLineFunc line_func )
-{
- int i, j;
- int x, y; /* X and Y position in source (fixed_point) */
-
- guchar **line_bufs = g_new ( guchar *, filter->y.n );
- int *filter_weights = make_filter_table ( filter );
-
- int x_step = ( 1 << SCALE_SHIFT ) / scale_x; /* X step in source (fixed point) */
- int y_step = ( 1 << SCALE_SHIFT ) / scale_y; /* Y step in source (fixed point) */
-
- int check_shift = check_size ? get_check_shift ( check_size ) : 0;
-
- int scaled_x_offset = floor ( filter->x.offset * ( 1 << SCALE_SHIFT ) );
-
- /* Compute the index where we run off the end of the source buffer. The furthest
- * source pixel we access at index i is:
- *
- * ((render_x0 + i) * x_step + scaled_x_offset) >> SCALE_SHIFT + filter->x.n - 1
- *
- * So, run_end_index is the smallest i for which this pixel is src_width, i.e, for which:
- *
- * (i + render_x0) * x_step >= ((src_width - filter->x.n + 1) << SCALE_SHIFT) - scaled_x_offset
- *
- */
-#define MYDIV(a,b) ((a) > 0 ? (a) / (b) : ((a) - (b) + 1) / (b)) /* Division so that -1/5 = -1 */
-
- int run_end_x = ( ( ( src_width - filter->x.n + 1 ) << SCALE_SHIFT ) - scaled_x_offset );
- int run_end_index = MYDIV ( run_end_x + x_step - 1, x_step ) - render_x0;
- run_end_index = MIN ( run_end_index, render_x1 - render_x0 );
-
- y = render_y0 * y_step + floor ( filter->y.offset * ( 1 << SCALE_SHIFT ) );
- for ( i = 0; i < ( render_y1 - render_y0 ); i++ )
- {
- int dest_x;
- int y_start = y >> SCALE_SHIFT;
- int x_start;
- int *run_weights = filter_weights +
- ( ( y >> ( SCALE_SHIFT - SUBSAMPLE_BITS ) ) & SUBSAMPLE_MASK ) *
- filter->x.n * filter->y.n * SUBSAMPLE;
- guchar *new_outbuf;
- guint32 tcolor1, tcolor2;
-
- guchar *outbuf = dest_buf + dest_rowstride * i;
- guchar *outbuf_end = outbuf + dest_channels * ( render_x1 - render_x0 );
-
- if ( ( ( i + check_y ) >> check_shift ) & 1 )
- {
- tcolor1 = color2;
- tcolor2 = color1;
- }
- else
- {
- tcolor1 = color1;
- tcolor2 = color2;
- }
-
- for ( j = 0; j < filter->y.n; j++ )
- {
- if ( y_start < 0 )
- line_bufs[ j ] = ( guchar * ) src_buf;
- else if ( y_start < src_height )
- line_bufs[ j ] = ( guchar * ) src_buf + src_rowstride * y_start;
- else
- line_bufs[ j ] = ( guchar * ) src_buf + src_rowstride * ( src_height - 1 );
-
- y_start++;
- }
-
- dest_x = check_x;
- x = render_x0 * x_step + scaled_x_offset;
- x_start = x >> SCALE_SHIFT;
-
- while ( x_start < 0 && outbuf < outbuf_end )
- {
- process_pixel ( run_weights + ( ( x >> ( SCALE_SHIFT - SUBSAMPLE_BITS ) ) & SUBSAMPLE_MASK ) * ( filter->x.n * filter->y.n ),
- filter->x.n, filter->y.n,
- outbuf, dest_x, dest_channels,
- line_bufs, src_channels,
- x >> SCALE_SHIFT, src_width );
-
- x += x_step;
- x_start = x >> SCALE_SHIFT;
- dest_x++;
- outbuf += dest_channels;
- }
-
- new_outbuf = ( *line_func ) ( run_weights, filter->x.n, filter->y.n,
- outbuf, dest_x,
- dest_buf + dest_rowstride * i + run_end_index * dest_channels,
- line_bufs,
- x, x_step, src_width );
-
- dest_x += ( new_outbuf - outbuf ) / dest_channels;
-
- x = ( dest_x - check_x + render_x0 ) * x_step + scaled_x_offset;
- outbuf = new_outbuf;
-
- while ( outbuf < outbuf_end )
- {
- process_pixel ( run_weights + ( ( x >> ( SCALE_SHIFT - SUBSAMPLE_BITS ) ) & SUBSAMPLE_MASK ) * ( filter->x.n * filter->y.n ),
- filter->x.n, filter->y.n,
- outbuf, dest_x, dest_channels,
- line_bufs, src_channels,
- x >> SCALE_SHIFT, src_width );
-
- x += x_step;
- dest_x++;
- outbuf += dest_channels;
- }
-
- y += y_step;
- }
-
- g_free ( line_bufs );
- g_free ( filter_weights );
-}
-
-
-/* Compute weights for reconstruction by replication followed by
- * sampling with a box filter
- */
-static inline void
-tile_make_weights ( PixopsFilterDimension *dim,
- double scale )
-{
- int n = ceil ( 1 / scale + 1 );
- double *pixel_weights = g_new ( double, SUBSAMPLE * n );
- int offset;
- int i;
-
- dim->n = n;
- dim->offset = 0;
- dim->weights = pixel_weights;
-
- for ( offset = 0; offset < SUBSAMPLE; offset++ )
- {
- double x = ( double ) offset / SUBSAMPLE;
- double a = x + 1 / scale;
-
- for ( i = 0; i < n; i++ )
- {
- if ( i < x )
- {
- if ( i + 1 > x )
- * ( pixel_weights++ ) = ( MIN ( i + 1, a ) - x ) * scale;
- else
- *( pixel_weights++ ) = 0;
- }
- else
- {
- if ( a > i )
- * ( pixel_weights++ ) = ( MIN ( i + 1, a ) - i ) * scale;
- else
- *( pixel_weights++ ) = 0;
- }
- }
- }
-}
-
-/* Compute weights for a filter that, for minification
- * is the same as 'tiles', and for magnification, is bilinear
- * reconstruction followed by a sampling with a delta function.
- */
-static inline void
-bilinear_magnify_make_weights ( PixopsFilterDimension *dim,
- double scale )
-{
- double * pixel_weights;
- int n;
- int offset;
- int i;
-
- if ( scale > 1.0 ) /* Linear */
- {
- n = 2;
- dim->offset = 0.5 * ( 1 / scale - 1 );
- }
- else /* Tile */
- {
- n = ceil ( 1.0 + 1.0 / scale );
- dim->offset = 0.0;
- }
-
- dim->n = n;
- dim->weights = g_new ( double, SUBSAMPLE * n );
-
- pixel_weights = dim->weights;
-
- for ( offset = 0; offset < SUBSAMPLE; offset++ )
- {
- double x = ( double ) offset / SUBSAMPLE;
-
- if ( scale > 1.0 ) /* Linear */
- {
- for ( i = 0; i < n; i++ )
- *( pixel_weights++ ) = ( ( ( i == 0 ) ? ( 1 - x ) : x ) / scale ) * scale;
- }
- else /* Tile */
- {
- double a = x + 1 / scale;
-
- /* x
- * ---------|--.-|----|--.-|------- SRC
- * ------------|---------|--------- DEST
- */
- for ( i = 0; i < n; i++ )
- {
- if ( i < x )
- {
- if ( i + 1 > x )
- * ( pixel_weights++ ) = ( MIN ( i + 1, a ) - x ) * scale;
- else
- *( pixel_weights++ ) = 0;
- }
- else
- {
- if ( a > i )
- * ( pixel_weights++ ) = ( MIN ( i + 1, a ) - i ) * scale;
- else
- *( pixel_weights++ ) = 0;
- }
- }
- }
- }
-}
-
-/* Computes the integral from b0 to b1 of
- *
- * f(x) = x; 0 <= x < 1
- * f(x) = 0; otherwise
- *
- * We combine two of these to compute the convolution of
- * a box filter with a triangular spike.
- */
-static inline double
-linear_box_half ( double b0, double b1 )
-{
- double a0, a1;
- double x0, x1;
-
- a0 = 0.;
- a1 = 1.;
-
- if ( a0 < b0 )
- {
- if ( a1 > b0 )
- {
- x0 = b0;
- x1 = MIN ( a1, b1 );
- }
- else
- return 0;
- }
- else
- {
- if ( b1 > a0 )
- {
- x0 = a0;
- x1 = MIN ( a1, b1 );
- }
- else
- return 0;
- }
-
- return 0.5 * ( x1 * x1 - x0 * x0 );
-}
-
-/* Compute weights for reconstructing with bilinear
- * interpolation, then sampling with a box filter
- */
-static inline void
-bilinear_box_make_weights ( PixopsFilterDimension *dim,
- double scale )
-{
- int n = ceil ( 1 / scale + 2.0 );
- double *pixel_weights = g_new ( double, SUBSAMPLE * n );
- double w;
- int offset, i;
-
- dim->offset = -1.0;
- dim->n = n;
- dim->weights = pixel_weights;
-
- for ( offset = 0 ; offset < SUBSAMPLE; offset++ )
- {
- double x = ( double ) offset / SUBSAMPLE;
- double a = x + 1 / scale;
-
- for ( i = 0; i < n; i++ )
- {
- w = linear_box_half ( 0.5 + i - a, 0.5 + i - x );
- w += linear_box_half ( 1.5 + x - i, 1.5 + a - i );
-
- *( pixel_weights++ ) = w * scale;
- }
- }
-}
-
-
-static inline void
-make_weights ( PixopsFilter *filter,
- PixopsInterpType interp_type,
- double scale_x,
- double scale_y )
-{
- switch ( interp_type )
- {
- case PIXOPS_INTERP_NEAREST:
- g_assert_not_reached ();
- break;
-
- case PIXOPS_INTERP_TILES:
- tile_make_weights ( &filter->x, scale_x );
- tile_make_weights ( &filter->y, scale_y );
- break;
-
- case PIXOPS_INTERP_BILINEAR:
- bilinear_magnify_make_weights ( &filter->x, scale_x );
- bilinear_magnify_make_weights ( &filter->y, scale_y );
- break;
-
- case PIXOPS_INTERP_HYPER:
- bilinear_box_make_weights ( &filter->x, scale_x );
- bilinear_box_make_weights ( &filter->y, scale_y );
- break;
- }
-}
-
-
-void
-yuv422_scale ( guchar *dest_buf,
- int render_x0,
- int render_y0,
- int render_x1,
- int render_y1,
- int dest_rowstride,
- int dest_channels,
- gboolean dest_has_alpha,
- const guchar *src_buf,
- int src_width,
- int src_height,
- int src_rowstride,
- int src_channels,
- gboolean src_has_alpha,
- double scale_x,
- double scale_y,
- PixopsInterpType interp_type )
-{
- PixopsFilter filter = { { 0, 0, 0}, { 0, 0, 0 }, 0 };
- PixopsLineFunc line_func;
-
-#if defined(USE_MMX) && !defined(ARCH_X86_64)
- gboolean found_mmx = pixops_have_mmx();
-#endif
-
- //g_return_if_fail ( !( dest_channels == 3 && dest_has_alpha ) );
- //g_return_if_fail ( !( src_channels == 3 && src_has_alpha ) );
- //g_return_if_fail ( !( src_has_alpha && !dest_has_alpha ) );
-
- if ( scale_x == 0 || scale_y == 0 )
- return ;
-
- if ( interp_type == PIXOPS_INTERP_NEAREST )
- {
- pixops_scale_nearest ( dest_buf, render_x0, render_y0, render_x1, render_y1,
- dest_rowstride,
- src_buf, src_width, src_height, src_rowstride,
- scale_x, scale_y );
- return;
- }
-
- filter.overall_alpha = 1.0;
- make_weights ( &filter, interp_type, scale_x, scale_y );
-
- if ( filter.x.n == 2 && filter.y.n == 2 )
- {
-#if defined(USE_MMX) && !defined(ARCH_X86_64)
- if ( found_mmx )
- {
- //fprintf( stderr, "rescale: using mmx\n" );
- line_func = scale_line_22_yuv_mmx_stub;
- }
- else
-#endif
-
- line_func = scale_line_22_yuv;
- }
- else
- line_func = scale_line;
-
- pixops_process ( dest_buf, render_x0, render_y0, render_x1, render_y1,
- dest_rowstride, dest_channels, dest_has_alpha,
- src_buf, src_width, src_height, src_rowstride, src_channels,
- src_has_alpha, scale_x, scale_y, 0, 0, 0, 0, 0,
- &filter, line_func );
-
- g_free ( filter.x.weights );
- g_free ( filter.y.weights );
-}
-
projects / melted / blobdiff