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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the Chromium LICENSE file.
#include "qcms.h"
#include "qcms_test_util.h"
#include "timing.h"
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
// External qcms tetra clut interpolators.
extern void qcms_transform_data_tetra_clut_rgba(qcms_transform *transform,
unsigned char *src,
unsigned char *dest,
size_t length,
qcms_format_type output_format);
#ifdef SSE2_ENABLE
extern void qcms_transform_data_tetra_clut_rgba_sse2(qcms_transform *transform,
unsigned char *src,
unsigned char *dest,
size_t length,
qcms_format_type output_format);
#else
void qcms_transform_data_tetra_clut_rgba_dummy(qcms_transform *transform,
unsigned char *src,
unsigned char *dest,
size_t length,
qcms_format_type output_format)
{
(void)(transform);
(void)(src);
(void)(dest);
(void)(length);
(void)(output_format);
}
#endif
static float *create_lut(size_t lutSize)
{
float *lut = malloc(lutSize * sizeof(float));
size_t i;
for (i = 0; i < lutSize; ++i) {
lut[i] = (rand() & 255) * (1.0f / 255.0f);
}
return lut;
}
static int diffs;
static int validate(unsigned char *dst0, unsigned char *dst1, size_t length, int limit, const size_t pixel_size)
{
size_t bytes = length * pixel_size;
size_t i;
// Compare dst0/dst0 byte-by-byte, allowing for minor differences due
// to SSE rounding modes (controlled by the limit argument).
if (limit < 0)
limit = 255; // Ignore all differences.
for (diffs = 0, i = 0; i < bytes; ++i) {
if (abs((int)dst0[i] - (int)dst1[i]) > limit) {
++diffs;
}
}
return !diffs;
}
static int qcms_test_tetra_clut_rgba(size_t width,
size_t height,
int iterations,
const char *in_profile,
const char *out_profile,
const int force_software)
{
qcms_transform transform0, transform1;
qcms_format_type format = {2, 0};
uint16_t samples = 33;
size_t lutSize;
float *lut0, *lut1;
const size_t length = width * height;
const size_t pixel_size = 4;
double time0, time1;
int i;
printf("Test qcms clut transforms for %d iterations\n", iterations);
printf("Test image size %u x %u pixels\n", (unsigned) width, (unsigned) height);
fflush(stdout);
srand(0);
seconds();
memset(&transform0, 0, sizeof(transform0));
memset(&transform1, 0, sizeof(transform1));
transform0.grid_size = samples;
transform1.grid_size = samples;
transform0.transform_flags = 0;
transform1.transform_flags = 0;
lutSize = 3 * samples * samples * samples;
lut0 = create_lut(lutSize);
lut1 = (float *)malloc(lutSize * sizeof(float));
memcpy(lut1, lut0, lutSize * sizeof(float));
transform0.r_clut = &lut0[0];
transform0.g_clut = &lut0[1];
transform0.b_clut = &lut0[2];
transform1.r_clut = &lut1[0];
transform1.g_clut = &lut1[1];
transform1.b_clut = &lut1[2];
// Re-generate and use different data sources during the iteration loop
// to avoid compiler / cache optimizations that may affect performance.
time0 = 0.0;
time1 = 0.0;
for (i = 0; i < iterations; ++i) {
unsigned char *src0 = (unsigned char *)calloc(length, pixel_size);
unsigned char *src1 = (unsigned char *)calloc(length, pixel_size);
unsigned char *dst0 = (unsigned char *)calloc(length, pixel_size);
unsigned char *dst1 = (unsigned char *)calloc(length, pixel_size);
generate_source_uint8_t(src0, length, pixel_size);
memcpy(src1, src0, length * pixel_size);
#define TRANSFORM_TEST0 qcms_transform_data_tetra_clut_rgba
#ifdef SSE2_ENABLE
#define TRANSFORM_TEST1 qcms_transform_data_tetra_clut_rgba_sse2
#else
#define TRANSFORM_TEST1 qcms_transform_data_tetra_clut_rgba_dummy
#endif
TIME(TRANSFORM_TEST0(&transform0, src0, dst0, length, format), &time0);
TIME(TRANSFORM_TEST1(&transform1, src1, dst1, length, format), &time1);
if (!validate(dst0, dst1, length, 0, pixel_size)) {
fprintf(stderr, "Invalid transform output: %d diffs\n", diffs);
}
free(src0);
free(src1);
free(dst0);
free(dst1);
}
#define STRINGIZE(s) #s
#define STRING(s) STRINGIZE(s)
printf("%.6lf (avg %.6lf) seconds " STRING(TRANSFORM_TEST0) "\n",
time0, time0 / iterations);
printf("%.6lf (avg %.6lf) seconds " STRING(TRANSFORM_TEST1) "\n",
time1, time1 / iterations);
printf("%.6lf speedup after %d iterations\n\n",
time0 / time1, iterations);
free(lut0);
free(lut1);
return diffs;
}
struct qcms_test_case qcms_test_tetra_clut_rgba_info = {
"qcms_test_tetra_clut_rgba",
qcms_test_tetra_clut_rgba,
QCMS_TEST_DISABLED
};
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