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Diffstat (limited to 'unit_test/scale_uv_test.cc')
| -rw-r--r-- | unit_test/scale_uv_test.cc | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/unit_test/scale_uv_test.cc b/unit_test/scale_uv_test.cc new file mode 100644 index 00000000..dab217c9 --- /dev/null +++ b/unit_test/scale_uv_test.cc @@ -0,0 +1,249 @@ +/* + * 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 |