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/*
* Copyright 2011 The LibYuv Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <stdlib.h>
#include <time.h>
#include "../unit_test/unit_test.h"
#include "libyuv/cpu_id.h"
#include "libyuv/scale_uv.h"
namespace libyuv {
#define STRINGIZE(line) #line
#define FILELINESTR(file, line) file ":" STRINGIZE(line)
#if !defined(DISABLE_SLOW_TESTS) || defined(__x86_64__) || defined(__i386__)
// SLOW TESTS are those that are unoptimized C code.
// FULL TESTS are optimized but test many variations of the same code.
#define ENABLE_FULL_TESTS
#endif
// Test scaling with C vs Opt and return maximum pixel difference. 0 = exact.
static int UVTestFilter(int src_width,
int src_height,
int dst_width,
int dst_height,
FilterMode f,
int benchmark_iterations,
int disable_cpu_flags,
int benchmark_cpu_info) {
if (!SizeValid(src_width, src_height, dst_width, dst_height)) {
return 0;
}
int i;
int64_t src_uv_plane_size = Abs(src_width) * Abs(src_height) * 2LL;
int src_stride_uv = Abs(src_width) * 2;
int64_t dst_uv_plane_size = dst_width * dst_height * 2LL;
int dst_stride_uv = dst_width * 2;
align_buffer_page_end(src_uv, src_uv_plane_size);
align_buffer_page_end(dst_uv_c, dst_uv_plane_size);
align_buffer_page_end(dst_uv_opt, dst_uv_plane_size);
if (!src_uv || !dst_uv_c || !dst_uv_opt) {
printf("Skipped. Alloc failed " FILELINESTR(__FILE__, __LINE__) "\n");
return 0;
}
MemRandomize(src_uv, src_uv_plane_size);
memset(dst_uv_c, 2, dst_uv_plane_size);
memset(dst_uv_opt, 123, dst_uv_plane_size);
MaskCpuFlags(disable_cpu_flags); // Disable all CPU optimization.
double c_time = get_time();
UVScale(src_uv, src_stride_uv, src_width, src_height, dst_uv_c, dst_stride_uv,
dst_width, dst_height, f);
c_time = (get_time() - c_time);
MaskCpuFlags(benchmark_cpu_info); // Enable all CPU optimization.
double opt_time = get_time();
for (i = 0; i < benchmark_iterations; ++i) {
UVScale(src_uv, src_stride_uv, src_width, src_height, dst_uv_opt,
dst_stride_uv, dst_width, dst_height, f);
}
opt_time = (get_time() - opt_time) / benchmark_iterations;
// Report performance of C vs OPT
printf("filter %d - %8d us C - %8d us OPT\n", f,
static_cast<int>(c_time * 1e6), static_cast<int>(opt_time * 1e6));
int max_diff = 0;
for (i = 0; i < dst_uv_plane_size; ++i) {
int abs_diff = Abs(dst_uv_c[i] - dst_uv_opt[i]);
if (abs_diff > max_diff) {
max_diff = abs_diff;
}
}
free_aligned_buffer_page_end(dst_uv_c);
free_aligned_buffer_page_end(dst_uv_opt);
free_aligned_buffer_page_end(src_uv);
return max_diff;
}
// The following adjustments in dimensions ensure the scale factor will be
// exactly achieved.
#define DX(x, nom, denom) static_cast<int>((Abs(x) / nom) * nom)
#define SX(x, nom, denom) static_cast<int>((x / nom) * denom)
#define TEST_FACTOR1(name, filter, nom, denom) \
TEST_F(LibYUVScaleTest, UVScaleDownBy##name##_##filter) { \
int diff = UVTestFilter( \
SX(benchmark_width_, nom, denom), SX(benchmark_height_, nom, denom), \
DX(benchmark_width_, nom, denom), DX(benchmark_height_, nom, denom), \
kFilter##filter, benchmark_iterations_, disable_cpu_flags_, \
benchmark_cpu_info_); \
EXPECT_EQ(0, diff); \
}
#if defined(ENABLE_FULL_TESTS)
// Test a scale factor with all 4 filters. Expect exact for SIMD vs C.
#define TEST_FACTOR(name, nom, denom) \
TEST_FACTOR1(name, None, nom, denom) \
TEST_FACTOR1(name, Linear, nom, denom) \
TEST_FACTOR1(name, Bilinear, nom, denom) \
TEST_FACTOR1(name, Box, nom, denom)
#else
// Test a scale factor with Bilinear.
#define TEST_FACTOR(name, nom, denom) TEST_FACTOR1(name, Bilinear, nom, denom)
#endif
TEST_FACTOR(2, 1, 2)
TEST_FACTOR(4, 1, 4)
// TEST_FACTOR(8, 1, 8) Disable for benchmark performance.
TEST_FACTOR(3by4, 3, 4)
TEST_FACTOR(3by8, 3, 8)
TEST_FACTOR(3, 1, 3)
#undef TEST_FACTOR1
#undef TEST_FACTOR
#undef SX
#undef DX
#define TEST_SCALETO1(name, width, height, filter, max_diff) \
TEST_F(LibYUVScaleTest, name##To##width##x##height##_##filter) { \
int diff = UVTestFilter(benchmark_width_, benchmark_height_, width, \
height, kFilter##filter, benchmark_iterations_, \
disable_cpu_flags_, benchmark_cpu_info_); \
EXPECT_LE(diff, max_diff); \
} \
TEST_F(LibYUVScaleTest, name##From##width##x##height##_##filter) { \
int diff = UVTestFilter(width, height, Abs(benchmark_width_), \
Abs(benchmark_height_), kFilter##filter, \
benchmark_iterations_, disable_cpu_flags_, \
benchmark_cpu_info_); \
EXPECT_LE(diff, max_diff); \
}
#if defined(ENABLE_FULL_TESTS)
/// Test scale to a specified size with all 4 filters.
#define TEST_SCALETO(name, width, height) \
TEST_SCALETO1(name, width, height, None, 0) \
TEST_SCALETO1(name, width, height, Linear, 3) \
TEST_SCALETO1(name, width, height, Bilinear, 3)
#else
#define TEST_SCALETO(name, width, height) \
TEST_SCALETO1(name, width, height, Bilinear, 3)
#endif
TEST_SCALETO(UVScale, 1, 1)
TEST_SCALETO(UVScale, 569, 480)
TEST_SCALETO(UVScale, 640, 360)
#ifndef DISABLE_SLOW_TESTS
TEST_SCALETO(UVScale, 256, 144) /* 128x72 * 2 */
TEST_SCALETO(UVScale, 320, 240)
TEST_SCALETO(UVScale, 1280, 720)
TEST_SCALETO(UVScale, 1920, 1080)
#endif // DISABLE_SLOW_TESTS
#undef TEST_SCALETO1
#undef TEST_SCALETO
#define TEST_SCALESWAPXY1(name, filter, max_diff) \
TEST_F(LibYUVScaleTest, name##SwapXY_##filter) { \
int diff = \
UVTestFilter(benchmark_width_, benchmark_height_, benchmark_height_, \
benchmark_width_, kFilter##filter, benchmark_iterations_, \
disable_cpu_flags_, benchmark_cpu_info_); \
EXPECT_LE(diff, max_diff); \
}
#if defined(ENABLE_FULL_TESTS)
// Test scale with swapped width and height with all 3 filters.
TEST_SCALESWAPXY1(UVScale, None, 0)
TEST_SCALESWAPXY1(UVScale, Linear, 0)
TEST_SCALESWAPXY1(UVScale, Bilinear, 0)
#else
TEST_SCALESWAPXY1(UVScale, Bilinear, 0)
#endif
#undef TEST_SCALESWAPXY1
TEST_F(LibYUVScaleTest, UVTest3x) {
const int kSrcStride = 480 * 2;
const int kDstStride = 160 * 2;
const int kSize = kSrcStride * 3;
align_buffer_page_end(orig_pixels, kSize);
for (int i = 0; i < 480 * 3; ++i) {
orig_pixels[i * 2 + 0] = i;
orig_pixels[i * 2 + 1] = 255 - i;
}
align_buffer_page_end(dest_pixels, kDstStride);
int iterations160 = (benchmark_width_ * benchmark_height_ + (160 - 1)) / 160 *
benchmark_iterations_;
for (int i = 0; i < iterations160; ++i) {
UVScale(orig_pixels, kSrcStride, 480, 3, dest_pixels, kDstStride, 160, 1,
kFilterBilinear);
}
EXPECT_EQ(225, dest_pixels[0]);
EXPECT_EQ(255 - 225, dest_pixels[1]);
UVScale(orig_pixels, kSrcStride, 480, 3, dest_pixels, kDstStride, 160, 1,
kFilterNone);
EXPECT_EQ(225, dest_pixels[0]);
EXPECT_EQ(255 - 225, dest_pixels[1]);
free_aligned_buffer_page_end(dest_pixels);
free_aligned_buffer_page_end(orig_pixels);
}
TEST_F(LibYUVScaleTest, UVTest4x) {
const int kSrcStride = 640 * 2;
const int kDstStride = 160 * 2;
const int kSize = kSrcStride * 4;
align_buffer_page_end(orig_pixels, kSize);
for (int i = 0; i < 640 * 4; ++i) {
orig_pixels[i * 2 + 0] = i;
orig_pixels[i * 2 + 1] = 255 - i;
}
align_buffer_page_end(dest_pixels, kDstStride);
int iterations160 = (benchmark_width_ * benchmark_height_ + (160 - 1)) / 160 *
benchmark_iterations_;
for (int i = 0; i < iterations160; ++i) {
UVScale(orig_pixels, kSrcStride, 640, 4, dest_pixels, kDstStride, 160, 1,
kFilterBilinear);
}
EXPECT_EQ(66, dest_pixels[0]);
EXPECT_EQ(190, dest_pixels[1]);
UVScale(orig_pixels, kSrcStride, 64, 4, dest_pixels, kDstStride, 16, 1,
kFilterNone);
EXPECT_EQ(2, dest_pixels[0]); // expect the 3rd pixel of the 3rd row
EXPECT_EQ(255 - 2, dest_pixels[1]);
free_aligned_buffer_page_end(dest_pixels);
free_aligned_buffer_page_end(orig_pixels);
}
} // namespace libyuv
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