#include <stdio.h>
+#include <malloc.h>
#include <math.h>
#include <string.h>
#include <stdlib.h>
#include "jpeglib.h"
-#define CACHE_LINE_FACTOR 8
+#define CACHE_LINE_FACTOR 16
double sinc(double x)
{
}
#if CACHE_LINE_FACTOR > 1
- for (x = 0; x < w; x += CACHE_LINE_FACTOR) {
+ for (x = 0; x < (w/CACHE_LINE_FACTOR) * CACHE_LINE_FACTOR; x += CACHE_LINE_FACTOR) {
unsigned char *sptr = pix + x;
float *dptr = npix + x;
for (y = 0; y < nh; ++y) {
+#if 0
int i;
float acc[CACHE_LINE_FACTOR];
for (i = 0; i < CACHE_LINE_FACTOR; ++i)
acc[i] = 0.0;
float *cf = &coeffs[pd[y].startcoeff];
unsigned sy;
-
+
for (sy = pd[y].start; sy <= pd[y].end; ++sy) {
- //asm volatile ("prefetcht0 %0" :: "m" (sptr[(sy+1) * w]));
for (i = 0; i < CACHE_LINE_FACTOR; ++i) {
acc[i] += sptr[sy * w + i] * *cf;
}
for (i = 0; i < CACHE_LINE_FACTOR; ++i) {
dptr[i] = acc[i];
}
+#else
+ /*
+ * xmm0 - xmm3: acc[0..15]
+ * xmm4: current filter coefficient
+ * xmm5, xmm6, xmm7: scratchpad
+ */
+ asm (
+ /* clear */
+ "pxor %%xmm0, %%xmm0 \n"
+ "pxor %%xmm1, %%xmm1 \n"
+ "pxor %%xmm2, %%xmm2 \n"
+ "pxor %%xmm3, %%xmm3 \n"
+
+ /* main loop */
+ ".lbl: \n"
+
+ /* a zero is useful during unpacking */
+ "pxor %%xmm4, %%xmm4 \n"
+
+ /* fetch all 16 source bytes */
+ "movups (%0), %%xmm5 \n"
+ "prefetcht0 (%0,%3,4) \n"
+
+ /* unpack into words (xmm5, xmm7) */
+ "movaps %%xmm5, %%xmm7 \n"
+ "punpcklbw %%xmm4, %%xmm5 \n"
+ "punpckhbw %%xmm4, %%xmm7 \n"
+
+ /* unpack xmm5 into dwords (xmm5, xmm6) */
+ "movaps %%xmm5, %%xmm6 \n"
+ "punpcklwd %%xmm4, %%xmm5 \n"
+ "punpckhwd %%xmm4, %%xmm6 \n"
+
+ /* convert xmm5, xmm6 to floats */
+ "cvtdq2ps %%xmm5, %%xmm5 \n"
+ "cvtdq2ps %%xmm6, %%xmm6 \n"
+
+ /* fetch the coefficient */
+ "movss (%2), %%xmm4 \n"
+ "shufps $0x0, %%xmm4, %%xmm4 \n"
+
+ /* do the muls for xmm5 and xmm6 */
+ "mulps %%xmm4, %%xmm5 \n"
+ "mulps %%xmm4, %%xmm6 \n"
+ "addps %%xmm5, %%xmm0 \n"
+ "addps %%xmm6, %%xmm1 \n"
+
+ /* get the zero back again */
+ "pxor %%xmm4, %%xmm4 \n"
+
+ /* unpack xmm7 into dwords (xmm7, xmm6) */
+ "movaps %%xmm7, %%xmm6 \n"
+ "punpcklwd %%xmm4, %%xmm7 \n"
+ "punpckhwd %%xmm4, %%xmm6 \n"
+
+ /* convert xmm7, xmm6 to floats */
+ "cvtdq2ps %%xmm7, %%xmm7 \n"
+ "cvtdq2ps %%xmm6, %%xmm6 \n"
+
+ /* fetch the coefficient */
+ "movss (%2), %%xmm4 \n"
+ "shufps $0x0, %%xmm4, %%xmm4 \n"
+
+ /* do the second set of muls */
+ "mulps %%xmm4, %%xmm7 \n"
+ "mulps %%xmm4, %%xmm6 \n"
+ "addps %%xmm7, %%xmm2 \n"
+ "addps %%xmm6, %%xmm3 \n"
+
+ /* move along, and loop */
+ "addl $4, %2 \n"
+ "addl %3, %0 \n"
+ "decl %1 \n"
+ "jnz .lbl \n"
+
+ /* store the values */
+ "movaps %%xmm0, (%4) \n"
+ "movaps %%xmm1, 16(%4) \n"
+ "movaps %%xmm2, 32(%4) \n"
+ "movaps %%xmm3, 48(%4) \n"
+ : :
+ "r" (&sptr[pd[y].start * w]), /* 0: srcptr base */
+ "r" (pd[y].end - pd[y].start + 1), /* 1: filter len */
+ "r" (&coeffs[pd[y].startcoeff]), /* 2: coeffs base */
+ "r" (w), /* 3: stride */
+ "r" (dptr) /* 4: dstptr base */
+ : "memory", "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7"
+ );
+#endif
dptr += dstride;
}
}
fprintf(stderr, " Cb component: %ux%u -> %ux%u\n", dinfo.comp_info[1].width_in_blocks * DCTSIZE, dinfo.comp_info[1].height_in_blocks * DCTSIZE, nw1, nh1);
fprintf(stderr, " Cr component: %ux%u -> %ux%u\n", dinfo.comp_info[2].width_in_blocks * DCTSIZE, dinfo.comp_info[2].height_in_blocks * DCTSIZE, nw2, nh2);
- JSAMPLE *data_y = (JSAMPLE*)malloc(dinfo.comp_info[0].height_in_blocks * dinfo.comp_info[0].width_in_blocks * DCTSIZE * DCTSIZE);
- JSAMPLE *data_cb = (JSAMPLE*)malloc(dinfo.comp_info[1].height_in_blocks * dinfo.comp_info[1].width_in_blocks * DCTSIZE * DCTSIZE);
- JSAMPLE *data_cr = (JSAMPLE*)malloc(dinfo.comp_info[2].height_in_blocks * dinfo.comp_info[2].width_in_blocks * DCTSIZE * DCTSIZE);
+ JSAMPLE *data_y = (JSAMPLE*)memalign(16, dinfo.comp_info[0].height_in_blocks * dinfo.comp_info[0].width_in_blocks * DCTSIZE * DCTSIZE);
+ JSAMPLE *data_cb = (JSAMPLE*)memalign(16, dinfo.comp_info[1].height_in_blocks * dinfo.comp_info[1].width_in_blocks * DCTSIZE * DCTSIZE);
+ JSAMPLE *data_cr = (JSAMPLE*)memalign(16, dinfo.comp_info[2].height_in_blocks * dinfo.comp_info[2].width_in_blocks * DCTSIZE * DCTSIZE);
JSAMPLE *data_ny, *data_ncb, *data_ncr;
int total_lines = 0, blocks = 0;
}
{
- float *npix = (float*)malloc(dinfo.comp_info[0].width_in_blocks * DCTSIZE * nh0 * sizeof(float));
+ float *npix = (float*)memalign(16, dinfo.comp_info[0].width_in_blocks * DCTSIZE * nh0 * sizeof(float));
vscale(data_y, npix, dinfo.comp_info[0].width_in_blocks * DCTSIZE, dinfo.comp_info[0].height_in_blocks * DCTSIZE, nh0, dinfo.comp_info[0].width_in_blocks * DCTSIZE);
data_ny = (unsigned char *)malloc(nw0 * stride0);
hscale(npix, data_ny, dinfo.comp_info[0].width_in_blocks * DCTSIZE, nh0, nw0, stride0);
free(npix);
}
{
- float *npix = (float*)malloc(dinfo.comp_info[1].width_in_blocks * DCTSIZE * nh1 * sizeof(float));
+ float *npix = (float*)memalign(16, dinfo.comp_info[1].width_in_blocks * DCTSIZE * nh1 * sizeof(float));
vscale(data_cr, npix, dinfo.comp_info[1].width_in_blocks * DCTSIZE, dinfo.comp_info[1].height_in_blocks * DCTSIZE, nh1, dinfo.comp_info[1].width_in_blocks * DCTSIZE);
data_ncr = (unsigned char *)malloc(nw1 * stride1);
hscale(npix, data_ncr, dinfo.comp_info[1].width_in_blocks * DCTSIZE, nh1, nw1, stride1);
free(npix);
}
{
- float *npix = (float*)malloc(dinfo.comp_info[2].width_in_blocks * DCTSIZE * nh2 * sizeof(float));
+ float *npix = (float*)memalign(16, dinfo.comp_info[2].width_in_blocks * DCTSIZE * nh2 * sizeof(float));
vscale(data_cb, npix, dinfo.comp_info[2].width_in_blocks * DCTSIZE, dinfo.comp_info[2].height_in_blocks * DCTSIZE, nh2, dinfo.comp_info[2].width_in_blocks * DCTSIZE);
data_ncb = (unsigned char *)malloc(nw2 * stride2);
hscale(npix, data_ncb, dinfo.comp_info[2].width_in_blocks * DCTSIZE, nh2, nw2, stride2);