+++ /dev/null
-/*
- * High quality image resampling with polyphase filters
- * Copyright (c) 2001 Fabrice Bellard.
- *
- * 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
- */
-
-/**
- * @file imgresample.c
- * High quality image resampling with polyphase filters .
- */
-
-#include "avcodec.h"
-#include "dsputil.h"
-
-#ifdef USE_FASTMEMCPY
-#include "fastmemcpy.h"
-#endif
-
-#define NB_COMPONENTS 3
-
-#define PHASE_BITS 4
-#define NB_PHASES (1 << PHASE_BITS)
-#define NB_TAPS 4
-#define FCENTER 1 /* index of the center of the filter */
-//#define TEST 1 /* Test it */
-
-#define POS_FRAC_BITS 16
-#define POS_FRAC (1 << POS_FRAC_BITS)
-/* 6 bits precision is needed for MMX */
-#define FILTER_BITS 8
-
-#define LINE_BUF_HEIGHT (NB_TAPS * 4)
-
-struct ImgReSampleContext {
- int iwidth, iheight, owidth, oheight, topBand, bottomBand, leftBand, rightBand;
- int h_incr, v_incr;
- int16_t h_filters[NB_PHASES][NB_TAPS] __align8; /* horizontal filters */
- int16_t v_filters[NB_PHASES][NB_TAPS] __align8; /* vertical filters */
- uint8_t *line_buf;
-};
-
-static inline int get_phase(int pos)
-{
- return ((pos) >> (POS_FRAC_BITS - PHASE_BITS)) & ((1 << PHASE_BITS) - 1);
-}
-
-/* This function must be optimized */
-static void h_resample_fast(uint8_t *dst, int dst_width, uint8_t *src, int src_width,
- int src_start, int src_incr, int16_t *filters)
-{
- int src_pos, phase, sum, i;
- uint8_t *s;
- int16_t *filter;
-
- src_pos = src_start;
- for(i=0;i<dst_width;i++) {
-#ifdef TEST
- /* test */
- if ((src_pos >> POS_FRAC_BITS) < 0 ||
- (src_pos >> POS_FRAC_BITS) > (src_width - NB_TAPS))
- av_abort();
-#endif
- s = src + (src_pos >> POS_FRAC_BITS);
- phase = get_phase(src_pos);
- filter = filters + phase * NB_TAPS;
-#if NB_TAPS == 4
- sum = s[0] * filter[0] +
- s[1] * filter[1] +
- s[2] * filter[2] +
- s[3] * filter[3];
-#else
- {
- int j;
- sum = 0;
- for(j=0;j<NB_TAPS;j++)
- sum += s[j] * filter[j];
- }
-#endif
- sum = sum >> FILTER_BITS;
- if (sum < 0)
- sum = 0;
- else if (sum > 255)
- sum = 255;
- dst[0] = sum;
- src_pos += src_incr;
- dst++;
- }
-}
-
-/* This function must be optimized */
-static void v_resample(uint8_t *dst, int dst_width, uint8_t *src, int wrap,
- int16_t *filter)
-{
- int sum, i;
- uint8_t *s;
-
- s = src;
- for(i=0;i<dst_width;i++) {
-#if NB_TAPS == 4
- sum = s[0 * wrap] * filter[0] +
- s[1 * wrap] * filter[1] +
- s[2 * wrap] * filter[2] +
- s[3 * wrap] * filter[3];
-#else
- {
- int j;
- uint8_t *s1 = s;
-
- sum = 0;
- for(j=0;j<NB_TAPS;j++) {
- sum += s1[0] * filter[j];
- s1 += wrap;
- }
- }
-#endif
- sum = sum >> FILTER_BITS;
- if (sum < 0)
- sum = 0;
- else if (sum > 255)
- sum = 255;
- dst[0] = sum;
- dst++;
- s++;
- }
-}
-
-#ifdef HAVE_MMX
-
-#include "i386/mmx.h"
-
-#define FILTER4(reg) \
-{\
- s = src + (src_pos >> POS_FRAC_BITS);\
- phase = get_phase(src_pos);\
- filter = filters + phase * NB_TAPS;\
- movq_m2r(*s, reg);\
- punpcklbw_r2r(mm7, reg);\
- movq_m2r(*filter, mm6);\
- pmaddwd_r2r(reg, mm6);\
- movq_r2r(mm6, reg);\
- psrlq_i2r(32, reg);\
- paddd_r2r(mm6, reg);\
- psrad_i2r(FILTER_BITS, reg);\
- src_pos += src_incr;\
-}
-
-#define DUMP(reg) movq_r2m(reg, tmp); printf(#reg "=%016Lx\n", tmp.uq);
-
-/* XXX: do four pixels at a time */
-static void h_resample_fast4_mmx(uint8_t *dst, int dst_width, uint8_t *src, int src_width,
- int src_start, int src_incr, int16_t *filters)
-{
- int src_pos, phase;
- uint8_t *s;
- int16_t *filter;
- mmx_t tmp;
-
- src_pos = src_start;
- pxor_r2r(mm7, mm7);
-
- while (dst_width >= 4) {
-
- FILTER4(mm0);
- FILTER4(mm1);
- FILTER4(mm2);
- FILTER4(mm3);
-
- packuswb_r2r(mm7, mm0);
- packuswb_r2r(mm7, mm1);
- packuswb_r2r(mm7, mm3);
- packuswb_r2r(mm7, mm2);
- movq_r2m(mm0, tmp);
- dst[0] = tmp.ub[0];
- movq_r2m(mm1, tmp);
- dst[1] = tmp.ub[0];
- movq_r2m(mm2, tmp);
- dst[2] = tmp.ub[0];
- movq_r2m(mm3, tmp);
- dst[3] = tmp.ub[0];
- dst += 4;
- dst_width -= 4;
- }
- while (dst_width > 0) {
- FILTER4(mm0);
- packuswb_r2r(mm7, mm0);
- movq_r2m(mm0, tmp);
- dst[0] = tmp.ub[0];
- dst++;
- dst_width--;
- }
- emms();
-}
-
-static void v_resample4_mmx(uint8_t *dst, int dst_width, uint8_t *src, int wrap,
- int16_t *filter)
-{
- int sum, i, v;
- uint8_t *s;
- mmx_t tmp;
- mmx_t coefs[4];
-
- for(i=0;i<4;i++) {
- v = filter[i];
- coefs[i].uw[0] = v;
- coefs[i].uw[1] = v;
- coefs[i].uw[2] = v;
- coefs[i].uw[3] = v;
- }
-
- pxor_r2r(mm7, mm7);
- s = src;
- while (dst_width >= 4) {
- movq_m2r(s[0 * wrap], mm0);
- punpcklbw_r2r(mm7, mm0);
- movq_m2r(s[1 * wrap], mm1);
- punpcklbw_r2r(mm7, mm1);
- movq_m2r(s[2 * wrap], mm2);
- punpcklbw_r2r(mm7, mm2);
- movq_m2r(s[3 * wrap], mm3);
- punpcklbw_r2r(mm7, mm3);
-
- pmullw_m2r(coefs[0], mm0);
- pmullw_m2r(coefs[1], mm1);
- pmullw_m2r(coefs[2], mm2);
- pmullw_m2r(coefs[3], mm3);
-
- paddw_r2r(mm1, mm0);
- paddw_r2r(mm3, mm2);
- paddw_r2r(mm2, mm0);
- psraw_i2r(FILTER_BITS, mm0);
-
- packuswb_r2r(mm7, mm0);
- movq_r2m(mm0, tmp);
-
- *(uint32_t *)dst = tmp.ud[0];
- dst += 4;
- s += 4;
- dst_width -= 4;
- }
- while (dst_width > 0) {
- sum = s[0 * wrap] * filter[0] +
- s[1 * wrap] * filter[1] +
- s[2 * wrap] * filter[2] +
- s[3 * wrap] * filter[3];
- sum = sum >> FILTER_BITS;
- if (sum < 0)
- sum = 0;
- else if (sum > 255)
- sum = 255;
- dst[0] = sum;
- dst++;
- s++;
- dst_width--;
- }
- emms();
-}
-#endif
-
-#ifdef HAVE_ALTIVEC
-typedef union {
- vector unsigned char v;
- unsigned char c[16];
-} vec_uc_t;
-
-typedef union {
- vector signed short v;
- signed short s[8];
-} vec_ss_t;
-
-void v_resample16_altivec(uint8_t *dst, int dst_width, uint8_t *src, int wrap,
- int16_t *filter)
-{
- int sum, i;
- uint8_t *s;
- vector unsigned char *tv, tmp, dstv, zero;
- vec_ss_t srchv[4], srclv[4], fv[4];
- vector signed short zeros, sumhv, sumlv;
- s = src;
-
- for(i=0;i<4;i++)
- {
- /*
- The vec_madds later on does an implicit >>15 on the result.
- Since FILTER_BITS is 8, and we have 15 bits of magnitude in
- a signed short, we have just enough bits to pre-shift our
- filter constants <<7 to compensate for vec_madds.
- */
- fv[i].s[0] = filter[i] << (15-FILTER_BITS);
- fv[i].v = vec_splat(fv[i].v, 0);
- }
-
- zero = vec_splat_u8(0);
- zeros = vec_splat_s16(0);
-
-
- /*
- When we're resampling, we'd ideally like both our input buffers,
- and output buffers to be 16-byte aligned, so we can do both aligned
- reads and writes. Sadly we can't always have this at the moment, so
- we opt for aligned writes, as unaligned writes have a huge overhead.
- To do this, do enough scalar resamples to get dst 16-byte aligned.
- */
- i = (-(int)dst) & 0xf;
- while(i>0) {
- sum = s[0 * wrap] * filter[0] +
- s[1 * wrap] * filter[1] +
- s[2 * wrap] * filter[2] +
- s[3 * wrap] * filter[3];
- sum = sum >> FILTER_BITS;
- if (sum<0) sum = 0; else if (sum>255) sum=255;
- dst[0] = sum;
- dst++;
- s++;
- dst_width--;
- i--;
- }
-
- /* Do our altivec resampling on 16 pixels at once. */
- while(dst_width>=16) {
- /*
- Read 16 (potentially unaligned) bytes from each of
- 4 lines into 4 vectors, and split them into shorts.
- Interleave the multipy/accumulate for the resample
- filter with the loads to hide the 3 cycle latency
- the vec_madds have.
- */
- tv = (vector unsigned char *) &s[0 * wrap];
- tmp = vec_perm(tv[0], tv[1], vec_lvsl(0, &s[i * wrap]));
- srchv[0].v = (vector signed short) vec_mergeh(zero, tmp);
- srclv[0].v = (vector signed short) vec_mergel(zero, tmp);
- sumhv = vec_madds(srchv[0].v, fv[0].v, zeros);
- sumlv = vec_madds(srclv[0].v, fv[0].v, zeros);
-
- tv = (vector unsigned char *) &s[1 * wrap];
- tmp = vec_perm(tv[0], tv[1], vec_lvsl(0, &s[1 * wrap]));
- srchv[1].v = (vector signed short) vec_mergeh(zero, tmp);
- srclv[1].v = (vector signed short) vec_mergel(zero, tmp);
- sumhv = vec_madds(srchv[1].v, fv[1].v, sumhv);
- sumlv = vec_madds(srclv[1].v, fv[1].v, sumlv);
-
- tv = (vector unsigned char *) &s[2 * wrap];
- tmp = vec_perm(tv[0], tv[1], vec_lvsl(0, &s[2 * wrap]));
- srchv[2].v = (vector signed short) vec_mergeh(zero, tmp);
- srclv[2].v = (vector signed short) vec_mergel(zero, tmp);
- sumhv = vec_madds(srchv[2].v, fv[2].v, sumhv);
- sumlv = vec_madds(srclv[2].v, fv[2].v, sumlv);
-
- tv = (vector unsigned char *) &s[3 * wrap];
- tmp = vec_perm(tv[0], tv[1], vec_lvsl(0, &s[3 * wrap]));
- srchv[3].v = (vector signed short) vec_mergeh(zero, tmp);
- srclv[3].v = (vector signed short) vec_mergel(zero, tmp);
- sumhv = vec_madds(srchv[3].v, fv[3].v, sumhv);
- sumlv = vec_madds(srclv[3].v, fv[3].v, sumlv);
-
- /*
- Pack the results into our destination vector,
- and do an aligned write of that back to memory.
- */
- dstv = vec_packsu(sumhv, sumlv) ;
- vec_st(dstv, 0, (vector unsigned char *) dst);
-
- dst+=16;
- s+=16;
- dst_width-=16;
- }
-
- /*
- If there are any leftover pixels, resample them
- with the slow scalar method.
- */
- while(dst_width>0) {
- sum = s[0 * wrap] * filter[0] +
- s[1 * wrap] * filter[1] +
- s[2 * wrap] * filter[2] +
- s[3 * wrap] * filter[3];
- sum = sum >> FILTER_BITS;
- if (sum<0) sum = 0; else if (sum>255) sum=255;
- dst[0] = sum;
- dst++;
- s++;
- dst_width--;
- }
-}
-#endif
-
-/* slow version to handle limit cases. Does not need optimisation */
-static void h_resample_slow(uint8_t *dst, int dst_width, uint8_t *src, int src_width,
- int src_start, int src_incr, int16_t *filters)
-{
- int src_pos, phase, sum, j, v, i;
- uint8_t *s, *src_end;
- int16_t *filter;
-
- src_end = src + src_width;
- src_pos = src_start;
- for(i=0;i<dst_width;i++) {
- s = src + (src_pos >> POS_FRAC_BITS);
- phase = get_phase(src_pos);
- filter = filters + phase * NB_TAPS;
- sum = 0;
- for(j=0;j<NB_TAPS;j++) {
- if (s < src)
- v = src[0];
- else if (s >= src_end)
- v = src_end[-1];
- else
- v = s[0];
- sum += v * filter[j];
- s++;
- }
- sum = sum >> FILTER_BITS;
- if (sum < 0)
- sum = 0;
- else if (sum > 255)
- sum = 255;
- dst[0] = sum;
- src_pos += src_incr;
- dst++;
- }
-}
-
-static void h_resample(uint8_t *dst, int dst_width, uint8_t *src, int src_width,
- int src_start, int src_incr, int16_t *filters)
-{
- int n, src_end;
-
- if (src_start < 0) {
- n = (0 - src_start + src_incr - 1) / src_incr;
- h_resample_slow(dst, n, src, src_width, src_start, src_incr, filters);
- dst += n;
- dst_width -= n;
- src_start += n * src_incr;
- }
- src_end = src_start + dst_width * src_incr;
- if (src_end > ((src_width - NB_TAPS) << POS_FRAC_BITS)) {
- n = (((src_width - NB_TAPS + 1) << POS_FRAC_BITS) - 1 - src_start) /
- src_incr;
- } else {
- n = dst_width;
- }
-#ifdef HAVE_MMX
- if ((mm_flags & MM_MMX) && NB_TAPS == 4)
- h_resample_fast4_mmx(dst, n,
- src, src_width, src_start, src_incr, filters);
- else
-#endif
- h_resample_fast(dst, n,
- src, src_width, src_start, src_incr, filters);
- if (n < dst_width) {
- dst += n;
- dst_width -= n;
- src_start += n * src_incr;
- h_resample_slow(dst, dst_width,
- src, src_width, src_start, src_incr, filters);
- }
-}
-
-static void component_resample(ImgReSampleContext *s,
- uint8_t *output, int owrap, int owidth, int oheight,
- uint8_t *input, int iwrap, int iwidth, int iheight)
-{
- int src_y, src_y1, last_src_y, ring_y, phase_y, y1, y;
- uint8_t *new_line, *src_line;
-
- last_src_y = - FCENTER - 1;
- /* position of the bottom of the filter in the source image */
- src_y = (last_src_y + NB_TAPS) * POS_FRAC;
- ring_y = NB_TAPS; /* position in ring buffer */
- for(y=0;y<oheight;y++) {
- /* apply horizontal filter on new lines from input if needed */
- src_y1 = src_y >> POS_FRAC_BITS;
- while (last_src_y < src_y1) {
- if (++ring_y >= LINE_BUF_HEIGHT + NB_TAPS)
- ring_y = NB_TAPS;
- last_src_y++;
- /* handle limit conditions : replicate line (slightly
- inefficient because we filter multiple times) */
- y1 = last_src_y;
- if (y1 < 0) {
- y1 = 0;
- } else if (y1 >= iheight) {
- y1 = iheight - 1;
- }
- src_line = input + y1 * iwrap;
- new_line = s->line_buf + ring_y * owidth;
- /* apply filter and handle limit cases correctly */
- h_resample(new_line, owidth,
- src_line, iwidth, - FCENTER * POS_FRAC, s->h_incr,
- &s->h_filters[0][0]);
- /* handle ring buffer wraping */
- if (ring_y >= LINE_BUF_HEIGHT) {
- memcpy(s->line_buf + (ring_y - LINE_BUF_HEIGHT) * owidth,
- new_line, owidth);
- }
- }
- /* apply vertical filter */
- phase_y = get_phase(src_y);
-#ifdef HAVE_MMX
- /* desactivated MMX because loss of precision */
- if ((mm_flags & MM_MMX) && NB_TAPS == 4 && 0)
- v_resample4_mmx(output, owidth,
- s->line_buf + (ring_y - NB_TAPS + 1) * owidth, owidth,
- &s->v_filters[phase_y][0]);
- else
-#endif
-#ifdef HAVE_ALTIVEC
- if ((mm_flags & MM_ALTIVEC) && NB_TAPS == 4 && FILTER_BITS <= 6)
- v_resample16_altivec(output, owidth,
- s->line_buf + (ring_y - NB_TAPS + 1) * owidth, owidth,
- &s->v_filters[phase_y][0]);
- else
-#endif
- v_resample(output, owidth,
- s->line_buf + (ring_y - NB_TAPS + 1) * owidth, owidth,
- &s->v_filters[phase_y][0]);
-
- src_y += s->v_incr;
- output += owrap;
- }
-}
-
-/* XXX: the following filter is quite naive, but it seems to suffice
- for 4 taps */
-static void build_filter(int16_t *filter, float factor)
-{
- int ph, i, v;
- float x, y, tab[NB_TAPS], norm, mult;
-
- /* if upsampling, only need to interpolate, no filter */
- if (factor > 1.0)
- factor = 1.0;
-
- for(ph=0;ph<NB_PHASES;ph++) {
- norm = 0;
- for(i=0;i<NB_TAPS;i++) {
-
- x = M_PI * ((float)(i - FCENTER) - (float)ph / NB_PHASES) * factor;
- if (x == 0)
- y = 1.0;
- else
- y = sin(x) / x;
- tab[i] = y;
- norm += y;
- }
-
- /* normalize so that an uniform color remains the same */
- mult = (float)(1 << FILTER_BITS) / norm;
- for(i=0;i<NB_TAPS;i++) {
- v = (int)(tab[i] * mult);
- filter[ph * NB_TAPS + i] = v;
- }
- }
-}
-
-ImgReSampleContext *img_resample_init(int owidth, int oheight,
- int iwidth, int iheight)
-{
- return img_resample_full_init(owidth, oheight, iwidth, iheight, 0, 0, 0, 0);
-}
-
-ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
- int iwidth, int iheight,
- int topBand, int bottomBand,
- int leftBand, int rightBand)
-{
- ImgReSampleContext *s;
-
- s = av_mallocz(sizeof(ImgReSampleContext));
- if (!s)
- return NULL;
- s->line_buf = av_mallocz(owidth * (LINE_BUF_HEIGHT + NB_TAPS));
- if (!s->line_buf)
- goto fail;
-
- s->owidth = owidth;
- s->oheight = oheight;
- s->iwidth = iwidth;
- s->iheight = iheight;
- s->topBand = topBand;
- s->bottomBand = bottomBand;
- s->leftBand = leftBand;
- s->rightBand = rightBand;
-
- s->h_incr = ((iwidth - leftBand - rightBand) * POS_FRAC) / owidth;
- s->v_incr = ((iheight - topBand - bottomBand) * POS_FRAC) / oheight;
-
- build_filter(&s->h_filters[0][0], (float) owidth / (float) (iwidth - leftBand - rightBand));
- build_filter(&s->v_filters[0][0], (float) oheight / (float) (iheight - topBand - bottomBand));
-
- return s;
- fail:
- av_free(s);
- return NULL;
-}
-
-void img_resample(ImgReSampleContext *s,
- AVPicture *output, AVPicture *input)
-{
- int i, shift;
-
- for(i=0;i<3;i++) {
- shift = (i == 0) ? 0 : 1;
- component_resample(s, output->data[i], output->linesize[i],
- s->owidth >> shift, s->oheight >> shift,
- input->data[i] + (input->linesize[i] * (s->topBand >> shift)) + (s->leftBand >> shift),
- input->linesize[i], ((s->iwidth - s->leftBand - s->rightBand) >> shift),
- (s->iheight - s->topBand - s->bottomBand) >> shift);
- }
-}
-
-void img_resample_close(ImgReSampleContext *s)
-{
- av_free(s->line_buf);
- av_free(s);
-}
-
-#ifdef TEST
-
-void *av_mallocz(int size)
-{
- void *ptr;
- ptr = malloc(size);
- memset(ptr, 0, size);
- return ptr;
-}
-
-void av_free(void *ptr)
-{
- /* XXX: this test should not be needed on most libcs */
- if (ptr)
- free(ptr);
-}
-
-/* input */
-#define XSIZE 256
-#define YSIZE 256
-uint8_t img[XSIZE * YSIZE];
-
-/* output */
-#define XSIZE1 512
-#define YSIZE1 512
-uint8_t img1[XSIZE1 * YSIZE1];
-uint8_t img2[XSIZE1 * YSIZE1];
-
-void save_pgm(const char *filename, uint8_t *img, int xsize, int ysize)
-{
- FILE *f;
- f=fopen(filename,"w");
- fprintf(f,"P5\n%d %d\n%d\n", xsize, ysize, 255);
- fwrite(img,1, xsize * ysize,f);
- fclose(f);
-}
-
-static void dump_filter(int16_t *filter)
-{
- int i, ph;
-
- for(ph=0;ph<NB_PHASES;ph++) {
- printf("%2d: ", ph);
- for(i=0;i<NB_TAPS;i++) {
- printf(" %5.2f", filter[ph * NB_TAPS + i] / 256.0);
- }
- printf("\n");
- }
-}
-
-#ifdef HAVE_MMX
-int mm_flags;
-#endif
-
-int main(int argc, char **argv)
-{
- int x, y, v, i, xsize, ysize;
- ImgReSampleContext *s;
- float fact, factors[] = { 1/2.0, 3.0/4.0, 1.0, 4.0/3.0, 16.0/9.0, 2.0 };
- char buf[256];
-
- /* build test image */
- for(y=0;y<YSIZE;y++) {
- for(x=0;x<XSIZE;x++) {
- if (x < XSIZE/2 && y < YSIZE/2) {
- if (x < XSIZE/4 && y < YSIZE/4) {
- if ((x % 10) <= 6 &&
- (y % 10) <= 6)
- v = 0xff;
- else
- v = 0x00;
- } else if (x < XSIZE/4) {
- if (x & 1)
- v = 0xff;
- else
- v = 0;
- } else if (y < XSIZE/4) {
- if (y & 1)
- v = 0xff;
- else
- v = 0;
- } else {
- if (y < YSIZE*3/8) {
- if ((y+x) & 1)
- v = 0xff;
- else
- v = 0;
- } else {
- if (((x+3) % 4) <= 1 &&
- ((y+3) % 4) <= 1)
- v = 0xff;
- else
- v = 0x00;
- }
- }
- } else if (x < XSIZE/2) {
- v = ((x - (XSIZE/2)) * 255) / (XSIZE/2);
- } else if (y < XSIZE/2) {
- v = ((y - (XSIZE/2)) * 255) / (XSIZE/2);
- } else {
- v = ((x + y - XSIZE) * 255) / XSIZE;
- }
- img[(YSIZE - y) * XSIZE + (XSIZE - x)] = v;
- }
- }
- save_pgm("/tmp/in.pgm", img, XSIZE, YSIZE);
- for(i=0;i<sizeof(factors)/sizeof(float);i++) {
- fact = factors[i];
- xsize = (int)(XSIZE * fact);
- ysize = (int)((YSIZE - 100) * fact);
- s = img_resample_full_init(xsize, ysize, XSIZE, YSIZE, 50 ,50, 0, 0);
- printf("Factor=%0.2f\n", fact);
- dump_filter(&s->h_filters[0][0]);
- component_resample(s, img1, xsize, xsize, ysize,
- img + 50 * XSIZE, XSIZE, XSIZE, YSIZE - 100);
- img_resample_close(s);
-
- sprintf(buf, "/tmp/out%d.pgm", i);
- save_pgm(buf, img1, xsize, ysize);
- }
-
- /* mmx test */
-#ifdef HAVE_MMX
- printf("MMX test\n");
- fact = 0.72;
- xsize = (int)(XSIZE * fact);
- ysize = (int)(YSIZE * fact);
- mm_flags = MM_MMX;
- s = img_resample_init(xsize, ysize, XSIZE, YSIZE);
- component_resample(s, img1, xsize, xsize, ysize,
- img, XSIZE, XSIZE, YSIZE);
-
- mm_flags = 0;
- s = img_resample_init(xsize, ysize, XSIZE, YSIZE);
- component_resample(s, img2, xsize, xsize, ysize,
- img, XSIZE, XSIZE, YSIZE);
- if (memcmp(img1, img2, xsize * ysize) != 0) {
- fprintf(stderr, "mmx error\n");
- exit(1);
- }
- printf("MMX OK\n");
-#endif
- return 0;
-}
-
-#endif
projects / synfig.git / blobdiff