Delete media/base/yuv_convert and dependents. Prefer libyuv.

media/base/simd/convert_rgb_to_yuv_unittest.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "media/base/simd/convert_rgb_to_yuv.h"
-
-#include <stdint.h>
-
-#include <memory>
-
-#include "base/cpu.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace {
-
-// Reference code that converts RGB pixels to YUV pixels.
-int ConvertRGBToY(const uint8_t* rgb) {
-  int y = 25 * rgb[0] + 129 * rgb[1] + 66 * rgb[2];
-  y = ((y + 128) >> 8) + 16;
-  return std::max(0, std::min(255, y));
-}
-
-int ConvertRGBToU(const uint8_t* rgb, int size) {
-  int u = 112 * rgb[0] - 74 * rgb[1] - 38 * rgb[2];
-  u = ((u + 128) >> 8) + 128;
-  return std::max(0, std::min(255, u));
-}
-
-int ConvertRGBToV(const uint8_t* rgb, int size) {
-  int v = -18 * rgb[0] - 94 * rgb[1] + 112 * rgb[2];
-  v = ((v + 128) >> 8) + 128;
-  return std::max(0, std::min(255, v));
-}
-
-}  // namespace
-
-// Assembly code confuses MemorySanitizer. Do not run it in MSan builds.
-#if defined(MEMORY_SANITIZER)
-#define MAYBE_SideBySideRGB DISABLED_SideBySideRGB
-#else
-#define MAYBE_SideBySideRGB SideBySideRGB
-#endif
-
-// A side-by-side test that verifies our ASM functions that convert RGB pixels
-// to YUV pixels can output the expected results. This test converts RGB pixels
-// to YUV pixels with our ASM functions (which use SSE, SSE2, SSE3, and SSSE3)
-// and compare the output YUV pixels with the ones calculated with out reference
-// functions implemented in C++.
-TEST(YUVConvertTest, MAYBE_SideBySideRGB) {
-  // We skip this test on PCs which does not support SSE3 because this test
-  // needs it.
-  base::CPU cpu;
-  if (!cpu.has_ssse3())
-    return;
-
-  // This test checks a subset of all RGB values so this test does not take so
-  // long time.
-  const int kStep = 8;
-  const int kWidth = 256 / kStep;
-
-  for (int size = 3; size <= 4; ++size) {
-    // Create the output buffers.
-    std::unique_ptr<uint8_t[]> rgb(new uint8_t[kWidth * size]);
-    std::unique_ptr<uint8_t[]> y(new uint8_t[kWidth]);
-    std::unique_ptr<uint8_t[]> u(new uint8_t[kWidth / 2]);
-    std::unique_ptr<uint8_t[]> v(new uint8_t[kWidth / 2]);
-
-    // Choose the function that converts from RGB pixels to YUV ones.
-    void (*convert)(const uint8_t*, uint8_t*, uint8_t*, uint8_t*, int, int, int,
-                    int, int) = NULL;
-    if (size == 3)
-      convert = media::ConvertRGB24ToYUV_SSSE3;
-    else
-      convert = media::ConvertRGB32ToYUV_SSSE3;
-
-    int total_error = 0;
-    for (int r = 0; r < kWidth; ++r) {
-      for (int g = 0; g < kWidth; ++g) {
-
-        // Fill the input pixels.
-        for (int b = 0; b < kWidth; ++b) {
-          rgb[b * size + 0] = b * kStep;
-          rgb[b * size + 1] = g * kStep;
-          rgb[b * size + 2] = r * kStep;
-          if (size == 4)
-            rgb[b * size + 3] = 255;
-        }
-
-        // Convert the input RGB pixels to YUV ones.
-        convert(rgb.get(), y.get(), u.get(), v.get(), kWidth, 1, kWidth * size,
-                kWidth, kWidth / 2);
-
-        // Check the output Y pixels.
-        for (int i = 0; i < kWidth; ++i) {
-          const uint8_t* p = &rgb[i * size];
-          int error = ConvertRGBToY(p) - y[i];
-          total_error += error > 0 ? error : -error;
-        }
-
-        // Check the output U pixels.
-        for (int i = 0; i < kWidth / 2; ++i) {
-          const uint8_t* p = &rgb[i * 2 * size];
-          int error = ConvertRGBToU(p, size) - u[i];
-          total_error += error > 0 ? error : -error;
-        }
-
-        // Check the output V pixels.
-        for (int i = 0; i < kWidth / 2; ++i) {
-          const uint8_t* p = &rgb[i * 2 * size];
-          int error = ConvertRGBToV(p, size) - v[i];
-          total_error += error > 0 ? error : -error;
-        }
-      }
-    }
-
-    EXPECT_EQ(0, total_error);
-  }
-}