// 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 LICENSE file.

#include "cc/tiles/software_image_decode_controller.h"

#include "cc/playback/draw_image.h"
#include "cc/resources/resource_format.h"
#include "cc/test/test_tile_task_runner.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkRefCnt.h"

namespace cc {
namespace {

size_t kLockedMemoryLimitBytes = 128 * 1024 * 1024;
class TestSoftwareImageDecodeController : public SoftwareImageDecodeController {
 public:
  TestSoftwareImageDecodeController()
      : SoftwareImageDecodeController(ResourceFormat::RGBA_8888,
                                      kLockedMemoryLimitBytes) {}
};

sk_sp<SkImage> CreateImage(int width, int height) {
  SkBitmap bitmap;
  bitmap.allocPixels(SkImageInfo::MakeN32Premul(width, height));
  return SkImage::MakeFromBitmap(bitmap);
}

SkMatrix CreateMatrix(const SkSize& scale, bool is_decomposable) {
  SkMatrix matrix;
  matrix.setScale(scale.width(), scale.height());

  if (!is_decomposable) {
    // Perspective is not decomposable, add it.
    matrix[SkMatrix::kMPersp0] = 0.1f;
  }

  return matrix;
}

TEST(SoftwareImageDecodeControllerTest, ImageKeyLowQuality) {
  sk_sp<SkImage> image = CreateImage(100, 100);
  bool is_decomposable = true;
  SkFilterQuality qualities[] = {kNone_SkFilterQuality, kLow_SkFilterQuality};
  for (auto quality : qualities) {
    DrawImage draw_image(
        image, SkIRect::MakeWH(image->width(), image->height()), quality,
        CreateMatrix(SkSize::Make(0.5f, 1.5f), is_decomposable));

    auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
    EXPECT_EQ(image->uniqueID(), key.image_id());
    EXPECT_EQ(quality, key.filter_quality());
    EXPECT_EQ(100, key.target_size().width());
    EXPECT_EQ(100, key.target_size().height());
    EXPECT_TRUE(key.can_use_original_decode());
    // Since the original decode will be used, the locked_bytes is that of the
    // original image.
    EXPECT_EQ(100u * 100u * 4u, key.locked_bytes());
  }
}

TEST(SoftwareImageDecodeControllerTest, ImageKeyMediumQuality) {
  sk_sp<SkImage> image = CreateImage(100, 100);
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.5f, 1.5f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(quality, key.filter_quality());
  EXPECT_EQ(100, key.target_size().width());
  EXPECT_EQ(100, key.target_size().height());
  EXPECT_FALSE(key.can_use_original_decode());
  EXPECT_EQ(100u * 100u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest,
     ImageKeyMediumQualityDropToLowIfEnlarging) {
  sk_sp<SkImage> image = CreateImage(100, 100);
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(1.5f, 1.5f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(kLow_SkFilterQuality, key.filter_quality());
  EXPECT_EQ(100, key.target_size().width());
  EXPECT_EQ(100, key.target_size().height());
  EXPECT_TRUE(key.can_use_original_decode());
  EXPECT_EQ(100u * 100u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest,
     ImageKeyMediumQualityDropToLowIfIdentity) {
  sk_sp<SkImage> image = CreateImage(100, 100);
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(1.f, 1.f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(kLow_SkFilterQuality, key.filter_quality());
  EXPECT_EQ(100, key.target_size().width());
  EXPECT_EQ(100, key.target_size().height());
  EXPECT_TRUE(key.can_use_original_decode());
  EXPECT_EQ(100u * 100u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest,
     ImageKeyMediumQualityDropToLowIfNearlyIdentity) {
  sk_sp<SkImage> image = CreateImage(100, 100);
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  DrawImage draw_image(
      image, SkIRect::MakeWH(image->width(), image->height()), quality,
      CreateMatrix(SkSize::Make(1.001f, 1.001f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(kLow_SkFilterQuality, key.filter_quality());
  EXPECT_EQ(100, key.target_size().width());
  EXPECT_EQ(100, key.target_size().height());
  EXPECT_TRUE(key.can_use_original_decode());
  EXPECT_EQ(100u * 100u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest,
     ImageKeyMediumQualityDropToLowIfNearlyIdentity2) {
  sk_sp<SkImage> image = CreateImage(100, 100);
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  DrawImage draw_image(
      image, SkIRect::MakeWH(image->width(), image->height()), quality,
      CreateMatrix(SkSize::Make(0.999f, 0.999f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(kLow_SkFilterQuality, key.filter_quality());
  EXPECT_EQ(100, key.target_size().width());
  EXPECT_EQ(100, key.target_size().height());
  EXPECT_TRUE(key.can_use_original_decode());
  EXPECT_EQ(100u * 100u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest,
     ImageKeyMediumQualityDropToLowIfNotDecomposable) {
  sk_sp<SkImage> image = CreateImage(100, 100);
  bool is_decomposable = false;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.5f, 1.5f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(kLow_SkFilterQuality, key.filter_quality());
  EXPECT_EQ(100, key.target_size().width());
  EXPECT_EQ(100, key.target_size().height());
  EXPECT_TRUE(key.can_use_original_decode());
  EXPECT_EQ(100u * 100u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest, ImageKeyMediumQualityAt1_5Scale) {
  sk_sp<SkImage> image = CreateImage(500, 200);
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(1.5f, 1.5f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(kLow_SkFilterQuality, key.filter_quality());
  EXPECT_EQ(500, key.target_size().width());
  EXPECT_EQ(200, key.target_size().height());
  EXPECT_TRUE(key.can_use_original_decode());
  EXPECT_EQ(500u * 200u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest, ImageKeyMediumQualityAt1_0cale) {
  sk_sp<SkImage> image = CreateImage(500, 200);
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(1.f, 1.f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(kLow_SkFilterQuality, key.filter_quality());
  EXPECT_EQ(500, key.target_size().width());
  EXPECT_EQ(200, key.target_size().height());
  EXPECT_TRUE(key.can_use_original_decode());
  EXPECT_EQ(500u * 200u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest, ImageKeyMediumQualityAt0_75Scale) {
  sk_sp<SkImage> image = CreateImage(500, 200);
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  DrawImage draw_image(
      image, SkIRect::MakeWH(image->width(), image->height()), quality,
      CreateMatrix(SkSize::Make(0.75f, 0.75f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(quality, key.filter_quality());
  EXPECT_EQ(500, key.target_size().width());
  EXPECT_EQ(200, key.target_size().height());
  EXPECT_FALSE(key.can_use_original_decode());
  EXPECT_EQ(500u * 200u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest, ImageKeyMediumQualityAt0_5Scale) {
  sk_sp<SkImage> image = CreateImage(500, 200);
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(quality, key.filter_quality());
  EXPECT_EQ(250, key.target_size().width());
  EXPECT_EQ(100, key.target_size().height());
  EXPECT_FALSE(key.can_use_original_decode());
  EXPECT_EQ(250u * 100u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest, ImageKeyMediumQualityAt0_49Scale) {
  sk_sp<SkImage> image = CreateImage(500, 200);
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  DrawImage draw_image(
      image, SkIRect::MakeWH(image->width(), image->height()), quality,
      CreateMatrix(SkSize::Make(0.49f, 0.49f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(quality, key.filter_quality());
  EXPECT_EQ(250, key.target_size().width());
  EXPECT_EQ(100, key.target_size().height());
  EXPECT_FALSE(key.can_use_original_decode());
  EXPECT_EQ(250u * 100u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest, ImageKeyMediumQualityAt0_1Scale) {
  sk_sp<SkImage> image = CreateImage(500, 200);
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.1f, 0.1f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(quality, key.filter_quality());
  EXPECT_EQ(62, key.target_size().width());
  EXPECT_EQ(25, key.target_size().height());
  EXPECT_FALSE(key.can_use_original_decode());
  EXPECT_EQ(62u * 25u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest, ImageKeyMediumQualityAt0_01Scale) {
  sk_sp<SkImage> image = CreateImage(500, 200);
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  DrawImage draw_image(
      image, SkIRect::MakeWH(image->width(), image->height()), quality,
      CreateMatrix(SkSize::Make(0.01f, 0.01f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(quality, key.filter_quality());
  EXPECT_EQ(7, key.target_size().width());
  EXPECT_EQ(3, key.target_size().height());
  EXPECT_FALSE(key.can_use_original_decode());
  EXPECT_EQ(7u * 3u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest, ImageKeyHighQuality) {
  sk_sp<SkImage> image = CreateImage(100, 100);
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.5f, 1.5f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(quality, key.filter_quality());
  EXPECT_EQ(50, key.target_size().width());
  EXPECT_EQ(150, key.target_size().height());
  EXPECT_FALSE(key.can_use_original_decode());
  EXPECT_EQ(50u * 150u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest,
     ImageKeyHighQualityDropToMediumIfTooLarge) {
  // Just over 64MB when scaled.
  sk_sp<SkImage> image = CreateImage(4555, 2048);
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  // At least one dimension should scale down, so that medium quality doesn't
  // become low.
  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.9f, 2.f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(kMedium_SkFilterQuality, key.filter_quality());
  EXPECT_EQ(4555, key.target_size().width());
  EXPECT_EQ(2048, key.target_size().height());
  EXPECT_FALSE(key.can_use_original_decode());
  EXPECT_EQ(4555u * 2048u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest,
     ImageKeyHighQualityDropToLowIfNotDecomposable) {
  sk_sp<SkImage> image = CreateImage(100, 100);
  bool is_decomposable = false;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.5f, 1.5f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(kLow_SkFilterQuality, key.filter_quality());
  EXPECT_EQ(100, key.target_size().width());
  EXPECT_EQ(100, key.target_size().height());
  EXPECT_TRUE(key.can_use_original_decode());
  EXPECT_EQ(100u * 100u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest,
     ImageKeyHighQualityDropToLowIfIdentity) {
  sk_sp<SkImage> image = CreateImage(100, 100);
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(1.f, 1.f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(kLow_SkFilterQuality, key.filter_quality());
  EXPECT_EQ(100, key.target_size().width());
  EXPECT_EQ(100, key.target_size().height());
  EXPECT_TRUE(key.can_use_original_decode());
  EXPECT_EQ(100u * 100u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest,
     ImageKeyHighQualityDropToLowIfNearlyIdentity) {
  sk_sp<SkImage> image = CreateImage(100, 100);
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  DrawImage draw_image(
      image, SkIRect::MakeWH(image->width(), image->height()), quality,
      CreateMatrix(SkSize::Make(1.001f, 1.001f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(kLow_SkFilterQuality, key.filter_quality());
  EXPECT_EQ(100, key.target_size().width());
  EXPECT_EQ(100, key.target_size().height());
  EXPECT_TRUE(key.can_use_original_decode());
  EXPECT_EQ(100u * 100u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest,
     ImageKeyHighQualityDropToLowIfNearlyIdentity2) {
  sk_sp<SkImage> image = CreateImage(100, 100);
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  DrawImage draw_image(
      image, SkIRect::MakeWH(image->width(), image->height()), quality,
      CreateMatrix(SkSize::Make(0.999f, 0.999f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(kLow_SkFilterQuality, key.filter_quality());
  EXPECT_EQ(100, key.target_size().width());
  EXPECT_EQ(100, key.target_size().height());
  EXPECT_TRUE(key.can_use_original_decode());
  EXPECT_EQ(100u * 100u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest, OriginalDecodesAreEqual) {
  sk_sp<SkImage> image = CreateImage(100, 100);
  bool is_decomposable = true;
  SkFilterQuality quality = kLow_SkFilterQuality;

  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.5f, 0.5), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(kLow_SkFilterQuality, key.filter_quality());
  EXPECT_EQ(100, key.target_size().width());
  EXPECT_EQ(100, key.target_size().height());
  EXPECT_TRUE(key.can_use_original_decode());
  EXPECT_EQ(100u * 100u * 4u, key.locked_bytes());

  DrawImage another_draw_image(
      image, SkIRect::MakeWH(image->width(), image->height()), quality,
      CreateMatrix(SkSize::Make(1.5f, 1.5), is_decomposable));

  auto another_key =
      ImageDecodeControllerKey::FromDrawImage(another_draw_image);
  EXPECT_EQ(image->uniqueID(), another_key.image_id());
  EXPECT_EQ(kLow_SkFilterQuality, another_key.filter_quality());
  EXPECT_EQ(100, another_key.target_size().width());
  EXPECT_EQ(100, another_key.target_size().height());
  EXPECT_TRUE(another_key.can_use_original_decode());
  EXPECT_EQ(100u * 100u * 4u, another_key.locked_bytes());

  EXPECT_TRUE(key == another_key);
}

TEST(SoftwareImageDecodeControllerTest, ImageRectDoesNotContainSrcRect) {
  sk_sp<SkImage> image = CreateImage(100, 100);
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  DrawImage draw_image(
      image, SkIRect::MakeXYWH(25, 35, image->width(), image->height()),
      quality, CreateMatrix(SkSize::Make(1.f, 1.f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(kLow_SkFilterQuality, key.filter_quality());
  EXPECT_EQ(100, key.target_size().width());
  EXPECT_EQ(100, key.target_size().height());
  EXPECT_EQ(gfx::Rect(25, 35, 75, 65), key.src_rect());
  EXPECT_EQ(100u * 100u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest,
     ImageRectDoesNotContainSrcRectWithScale) {
  sk_sp<SkImage> image = CreateImage(100, 100);
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  DrawImage draw_image(
      image, SkIRect::MakeXYWH(20, 30, image->width(), image->height()),
      quality, CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));

  auto key = ImageDecodeControllerKey::FromDrawImage(draw_image);
  EXPECT_EQ(image->uniqueID(), key.image_id());
  EXPECT_EQ(kHigh_SkFilterQuality, key.filter_quality());
  EXPECT_EQ(40, key.target_size().width());
  EXPECT_EQ(35, key.target_size().height());
  EXPECT_EQ(gfx::Rect(20, 30, 80, 70), key.src_rect());
  EXPECT_EQ(40u * 35u * 4u, key.locked_bytes());
}

TEST(SoftwareImageDecodeControllerTest, GetTaskForImageSameImage) {
  TestSoftwareImageDecodeController controller;
  sk_sp<SkImage> image = CreateImage(100, 100);
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));
  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(task);

  DrawImage another_draw_image(
      image, SkIRect::MakeWH(image->width(), image->height()), quality,
      CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));
  scoped_refptr<TileTask> another_task;
  need_unref = controller.GetTaskForImageAndRef(
      another_draw_image, ImageDecodeController::TracingInfo(), &another_task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(task.get() == another_task.get());

  TestTileTaskRunner::ProcessTask(task.get());

  controller.UnrefImage(draw_image);
  controller.UnrefImage(draw_image);
}

TEST(SoftwareImageDecodeControllerTest,
     GetTaskForImageSameImageDifferentQuality) {
  TestSoftwareImageDecodeController controller;
  sk_sp<SkImage> image = CreateImage(100, 100);
  bool is_decomposable = true;

  DrawImage high_quality_draw_image(
      image, SkIRect::MakeWH(image->width(), image->height()),
      kHigh_SkFilterQuality,
      CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));
  scoped_refptr<TileTask> high_quality_task;
  bool need_unref = controller.GetTaskForImageAndRef(
      high_quality_draw_image, ImageDecodeController::TracingInfo(),
      &high_quality_task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(high_quality_task);

  DrawImage medium_quality_draw_image(
      image, SkIRect::MakeWH(image->width(), image->height()),
      kMedium_SkFilterQuality,
      CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));
  scoped_refptr<TileTask> medium_quality_task;
  need_unref = controller.GetTaskForImageAndRef(
      medium_quality_draw_image, ImageDecodeController::TracingInfo(),
      &medium_quality_task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(medium_quality_task);
  EXPECT_TRUE(high_quality_task.get() != medium_quality_task.get());

  DrawImage low_quality_draw_image(
      image, SkIRect::MakeWH(image->width(), image->height()),
      kLow_SkFilterQuality,
      CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));
  scoped_refptr<TileTask> low_quality_task;
  need_unref = controller.GetTaskForImageAndRef(
      low_quality_draw_image, ImageDecodeController::TracingInfo(),
      &low_quality_task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(low_quality_task);
  EXPECT_TRUE(high_quality_task.get() != low_quality_task.get());
  EXPECT_TRUE(medium_quality_task.get() != low_quality_task.get());

  TestTileTaskRunner::ProcessTask(high_quality_task.get());
  TestTileTaskRunner::ProcessTask(medium_quality_task.get());
  TestTileTaskRunner::ProcessTask(low_quality_task.get());

  controller.UnrefImage(high_quality_draw_image);
  controller.UnrefImage(medium_quality_draw_image);
  controller.UnrefImage(low_quality_draw_image);
}

TEST(SoftwareImageDecodeControllerTest, GetTaskForImageSameImageDifferentSize) {
  TestSoftwareImageDecodeController controller;
  sk_sp<SkImage> image = CreateImage(100, 100);
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  DrawImage half_size_draw_image(
      image, SkIRect::MakeWH(image->width(), image->height()), quality,
      CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));
  scoped_refptr<TileTask> half_size_task;
  bool need_unref = controller.GetTaskForImageAndRef(
      half_size_draw_image, ImageDecodeController::TracingInfo(),
      &half_size_task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(half_size_task);

  DrawImage quarter_size_draw_image(
      image, SkIRect::MakeWH(image->width(), image->height()), quality,
      CreateMatrix(SkSize::Make(0.25f, 0.25f), is_decomposable));
  scoped_refptr<TileTask> quarter_size_task;
  need_unref = controller.GetTaskForImageAndRef(
      quarter_size_draw_image, ImageDecodeController::TracingInfo(),
      &quarter_size_task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(quarter_size_task);
  EXPECT_TRUE(half_size_task.get() != quarter_size_task.get());

  TestTileTaskRunner::ProcessTask(half_size_task.get());
  TestTileTaskRunner::ProcessTask(quarter_size_task.get());

  controller.UnrefImage(half_size_draw_image);
  controller.UnrefImage(quarter_size_draw_image);
}

TEST(SoftwareImageDecodeControllerTest, GetTaskForImageDifferentImage) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  sk_sp<SkImage> first_image = CreateImage(100, 100);
  DrawImage first_draw_image(
      first_image, SkIRect::MakeWH(first_image->width(), first_image->height()),
      quality, CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));
  scoped_refptr<TileTask> first_task;
  bool need_unref = controller.GetTaskForImageAndRef(
      first_draw_image, ImageDecodeController::TracingInfo(), &first_task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(first_task);

  sk_sp<SkImage> second_image = CreateImage(100, 100);
  DrawImage second_draw_image(
      second_image,
      SkIRect::MakeWH(second_image->width(), second_image->height()), quality,
      CreateMatrix(SkSize::Make(0.25f, 0.25f), is_decomposable));
  scoped_refptr<TileTask> second_task;
  need_unref = controller.GetTaskForImageAndRef(
      second_draw_image, ImageDecodeController::TracingInfo(), &second_task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(second_task);
  EXPECT_TRUE(first_task.get() != second_task.get());

  TestTileTaskRunner::ProcessTask(first_task.get());
  TestTileTaskRunner::ProcessTask(second_task.get());

  controller.UnrefImage(first_draw_image);
  controller.UnrefImage(second_draw_image);
}

TEST(SoftwareImageDecodeControllerTest, GetTaskForImageAlreadyDecoded) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(100, 100);
  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));
  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(task);

  TestTileTaskRunner::ScheduleTask(task.get());
  TestTileTaskRunner::RunTask(task.get());

  scoped_refptr<TileTask> another_task;
  need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &another_task);
  EXPECT_TRUE(need_unref);
  EXPECT_FALSE(another_task);

  TestTileTaskRunner::CompleteTask(task.get());

  controller.UnrefImage(draw_image);
  controller.UnrefImage(draw_image);
}

TEST(SoftwareImageDecodeControllerTest, GetTaskForImageAlreadyPrerolled) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kLow_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(100, 100);
  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(1.f, 1.f), is_decomposable));
  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(task);

  TestTileTaskRunner::ScheduleTask(task.get());
  TestTileTaskRunner::RunTask(task.get());

  scoped_refptr<TileTask> another_task;
  need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &another_task);
  EXPECT_TRUE(need_unref);
  EXPECT_FALSE(another_task);

  TestTileTaskRunner::CompleteTask(task.get());

  scoped_refptr<TileTask> third_task;
  need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &third_task);
  EXPECT_TRUE(need_unref);
  EXPECT_FALSE(third_task);

  controller.UnrefImage(draw_image);
  controller.UnrefImage(draw_image);
  controller.UnrefImage(draw_image);
}

TEST(SoftwareImageDecodeControllerTest, GetTaskForImageCanceledGetsNewTask) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(100, 100);
  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));
  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(task);

  scoped_refptr<TileTask> another_task;
  need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &another_task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(another_task.get() == task.get());

  // Didn't run the task, complete it (it was canceled).
  TestTileTaskRunner::CancelTask(task.get());
  TestTileTaskRunner::CompleteTask(task.get());

  // Fully cancel everything (so the raster would unref things).
  controller.UnrefImage(draw_image);
  controller.UnrefImage(draw_image);

  // Here a new task is created.
  scoped_refptr<TileTask> third_task;
  need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &third_task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(third_task);
  EXPECT_FALSE(third_task.get() == task.get());

  TestTileTaskRunner::ProcessTask(third_task.get());

  controller.UnrefImage(draw_image);
}

TEST(SoftwareImageDecodeControllerTest,
     GetTaskForImageCanceledWhileReffedGetsNewTask) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(100, 100);
  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));
  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(task);

  scoped_refptr<TileTask> another_task;
  need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &another_task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(another_task.get() == task.get());

  // Didn't run the task, complete it (it was canceled).
  TestTileTaskRunner::CancelTask(task.get());
  TestTileTaskRunner::CompleteTask(task.get());

  // Note that here, everything is reffed, but a new task is created. This is
  // possible with repeated schedule/cancel operations.
  scoped_refptr<TileTask> third_task;
  need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &third_task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(third_task);
  EXPECT_FALSE(third_task.get() == task.get());

  TestTileTaskRunner::ProcessTask(third_task.get());

  // 3 Unrefs!
  controller.UnrefImage(draw_image);
  controller.UnrefImage(draw_image);
  controller.UnrefImage(draw_image);
}

TEST(SoftwareImageDecodeControllerTest, GetDecodedImageForDraw) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(100, 100);
  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));
  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(task);

  TestTileTaskRunner::ProcessTask(task.get());

  DecodedDrawImage decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_TRUE(decoded_draw_image.image());
  EXPECT_EQ(50, decoded_draw_image.image()->width());
  EXPECT_EQ(50, decoded_draw_image.image()->height());
  EXPECT_FLOAT_EQ(0.5f, decoded_draw_image.scale_adjustment().width());
  EXPECT_FLOAT_EQ(0.5f, decoded_draw_image.scale_adjustment().height());
  EXPECT_EQ(kLow_SkFilterQuality, decoded_draw_image.filter_quality());
  EXPECT_FALSE(decoded_draw_image.is_scale_adjustment_identity());
  EXPECT_FALSE(decoded_draw_image.is_at_raster_decode());

  controller.DrawWithImageFinished(draw_image, decoded_draw_image);
  controller.UnrefImage(draw_image);
}

TEST(SoftwareImageDecodeControllerTest,
     GetDecodedImageForDrawWithNonContainedSrcRect) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(100, 100);
  DrawImage draw_image(
      image, SkIRect::MakeXYWH(20, 30, image->width(), image->height()),
      quality, CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));
  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(task);

  TestTileTaskRunner::ProcessTask(task.get());

  DecodedDrawImage decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_TRUE(decoded_draw_image.image());
  EXPECT_EQ(40, decoded_draw_image.image()->width());
  EXPECT_EQ(35, decoded_draw_image.image()->height());
  EXPECT_FLOAT_EQ(0.5f, decoded_draw_image.scale_adjustment().width());
  EXPECT_FLOAT_EQ(0.5f, decoded_draw_image.scale_adjustment().height());
  EXPECT_EQ(kLow_SkFilterQuality, decoded_draw_image.filter_quality());
  EXPECT_FALSE(decoded_draw_image.is_scale_adjustment_identity());
  EXPECT_FALSE(decoded_draw_image.is_at_raster_decode());

  controller.DrawWithImageFinished(draw_image, decoded_draw_image);
  controller.UnrefImage(draw_image);
}

TEST(SoftwareImageDecodeControllerTest, GetDecodedImageForDrawAtRasterDecode) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(100, 100);
  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));

  DecodedDrawImage decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_TRUE(decoded_draw_image.image());
  EXPECT_EQ(50, decoded_draw_image.image()->width());
  EXPECT_EQ(50, decoded_draw_image.image()->height());
  EXPECT_FLOAT_EQ(0.5f, decoded_draw_image.scale_adjustment().width());
  EXPECT_FLOAT_EQ(0.5f, decoded_draw_image.scale_adjustment().height());
  EXPECT_EQ(kLow_SkFilterQuality, decoded_draw_image.filter_quality());
  EXPECT_FALSE(decoded_draw_image.is_scale_adjustment_identity());
  EXPECT_TRUE(decoded_draw_image.is_at_raster_decode());

  controller.DrawWithImageFinished(draw_image, decoded_draw_image);
}

TEST(SoftwareImageDecodeControllerTest,
     GetDecodedImageForDrawAtRasterDecodeMultipleTimes) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(100, 100);
  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));

  DecodedDrawImage decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_TRUE(decoded_draw_image.image());
  EXPECT_EQ(50, decoded_draw_image.image()->width());
  EXPECT_EQ(50, decoded_draw_image.image()->height());
  EXPECT_FLOAT_EQ(0.5f, decoded_draw_image.scale_adjustment().width());
  EXPECT_FLOAT_EQ(0.5f, decoded_draw_image.scale_adjustment().height());
  EXPECT_EQ(kLow_SkFilterQuality, decoded_draw_image.filter_quality());
  EXPECT_FALSE(decoded_draw_image.is_scale_adjustment_identity());
  EXPECT_TRUE(decoded_draw_image.is_at_raster_decode());

  DecodedDrawImage another_decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_EQ(decoded_draw_image.image()->uniqueID(),
            another_decoded_draw_image.image()->uniqueID());

  controller.DrawWithImageFinished(draw_image, decoded_draw_image);
  controller.DrawWithImageFinished(draw_image, another_decoded_draw_image);
}

TEST(SoftwareImageDecodeControllerTest,
     GetDecodedImageForDrawAtRasterDecodeDoesNotPreventTasks) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(100, 100);
  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));

  DecodedDrawImage decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_TRUE(decoded_draw_image.image());
  EXPECT_EQ(50, decoded_draw_image.image()->width());
  EXPECT_EQ(50, decoded_draw_image.image()->height());
  EXPECT_FLOAT_EQ(0.5f, decoded_draw_image.scale_adjustment().width());
  EXPECT_FLOAT_EQ(0.5f, decoded_draw_image.scale_adjustment().height());
  EXPECT_EQ(kLow_SkFilterQuality, decoded_draw_image.filter_quality());
  EXPECT_FALSE(decoded_draw_image.is_scale_adjustment_identity());
  EXPECT_TRUE(decoded_draw_image.is_at_raster_decode());

  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(task);

  TestTileTaskRunner::ProcessTask(task.get());

  DecodedDrawImage another_decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  // This should get the new decoded/locked image, not the one we're using at
  // raster.
  // TODO(vmpstr): We can possibly optimize this so that the decode simply moves
  // the image to the right spot.
  EXPECT_NE(decoded_draw_image.image()->uniqueID(),
            another_decoded_draw_image.image()->uniqueID());
  EXPECT_FALSE(another_decoded_draw_image.is_at_raster_decode());

  controller.DrawWithImageFinished(draw_image, decoded_draw_image);
  controller.DrawWithImageFinished(draw_image, another_decoded_draw_image);
  controller.UnrefImage(draw_image);
}

TEST(SoftwareImageDecodeControllerTest,
     GetDecodedImageForDrawAtRasterDecodeIsUsedForLockedCache) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(100, 100);
  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));

  DecodedDrawImage decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_TRUE(decoded_draw_image.image());
  EXPECT_EQ(50, decoded_draw_image.image()->width());
  EXPECT_EQ(50, decoded_draw_image.image()->height());
  EXPECT_FLOAT_EQ(0.5f, decoded_draw_image.scale_adjustment().width());
  EXPECT_FLOAT_EQ(0.5f, decoded_draw_image.scale_adjustment().height());
  EXPECT_EQ(kLow_SkFilterQuality, decoded_draw_image.filter_quality());
  EXPECT_FALSE(decoded_draw_image.is_scale_adjustment_identity());
  EXPECT_TRUE(decoded_draw_image.is_at_raster_decode());

  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_TRUE(need_unref);
  EXPECT_TRUE(task);

  // If we finish the draw here, then we will use it for the locked decode
  // instead of decoding again.
  controller.DrawWithImageFinished(draw_image, decoded_draw_image);

  TestTileTaskRunner::ProcessTask(task.get());

  DecodedDrawImage another_decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  // This should get the decoded/locked image which we originally decoded at
  // raster time, since it's now in the locked cache.
  EXPECT_EQ(decoded_draw_image.image()->uniqueID(),
            another_decoded_draw_image.image()->uniqueID());
  EXPECT_FALSE(another_decoded_draw_image.is_at_raster_decode());

  controller.DrawWithImageFinished(draw_image, another_decoded_draw_image);
  controller.UnrefImage(draw_image);
}

TEST(SoftwareImageDecodeControllerTest, ZeroSizedImagesAreSkipped) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(100, 100);
  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.f, 0.f), is_decomposable));

  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_FALSE(task);
  EXPECT_FALSE(need_unref);

  DecodedDrawImage decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_FALSE(decoded_draw_image.image());

  controller.DrawWithImageFinished(draw_image, decoded_draw_image);
}

TEST(SoftwareImageDecodeControllerTest, NonOverlappingSrcRectImagesAreSkipped) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kHigh_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(100, 100);
  DrawImage draw_image(
      image, SkIRect::MakeXYWH(150, 150, image->width(), image->height()),
      quality, CreateMatrix(SkSize::Make(1.f, 1.f), is_decomposable));

  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_FALSE(task);
  EXPECT_FALSE(need_unref);

  DecodedDrawImage decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_FALSE(decoded_draw_image.image());

  controller.DrawWithImageFinished(draw_image, decoded_draw_image);
}

TEST(SoftwareImageDecodeControllerTest, LowQualityFilterIsHandled) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kLow_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(100, 100);
  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(1.f, 1.f), is_decomposable));

  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_TRUE(task);
  EXPECT_TRUE(need_unref);

  TestTileTaskRunner::ProcessTask(task.get());

  DecodedDrawImage decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_TRUE(decoded_draw_image.image());
  // If we decoded the image and cached it, it would be stored in a different
  // SkImage object.
  EXPECT_TRUE(decoded_draw_image.image() != image);

  controller.DrawWithImageFinished(draw_image, decoded_draw_image);
  controller.UnrefImage(draw_image);
}

TEST(SoftwareImageDecodeControllerTest, LowQualityScaledSubrectIsHandled) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kLow_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(100, 100);
  DrawImage draw_image(image, SkIRect::MakeXYWH(10, 10, 80, 80), quality,
                       CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));

  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_TRUE(task);
  EXPECT_TRUE(need_unref);

  TestTileTaskRunner::ProcessTask(task.get());

  DecodedDrawImage decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_TRUE(decoded_draw_image.image());
  // If we decoded the image and cached it, it would be stored in a different
  // SkImage object.
  EXPECT_TRUE(decoded_draw_image.image() != image);
  EXPECT_EQ(kLow_SkFilterQuality, decoded_draw_image.filter_quality());
  EXPECT_TRUE(decoded_draw_image.is_scale_adjustment_identity());

  controller.DrawWithImageFinished(draw_image, decoded_draw_image);
  controller.UnrefImage(draw_image);
}

TEST(SoftwareImageDecodeControllerTest, NoneQualityScaledSubrectIsHandled) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kNone_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(100, 100);
  DrawImage draw_image(image, SkIRect::MakeXYWH(10, 10, 80, 80), quality,
                       CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));

  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_TRUE(task);
  EXPECT_TRUE(need_unref);

  TestTileTaskRunner::ProcessTask(task.get());

  DecodedDrawImage decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_TRUE(decoded_draw_image.image());
  // If we decoded the image and cached it, it would be stored in a different
  // SkImage object.
  EXPECT_TRUE(decoded_draw_image.image() != image);
  EXPECT_EQ(kNone_SkFilterQuality, decoded_draw_image.filter_quality());
  EXPECT_TRUE(decoded_draw_image.is_scale_adjustment_identity());

  controller.DrawWithImageFinished(draw_image, decoded_draw_image);
  controller.UnrefImage(draw_image);
}

TEST(SoftwareImageDecodeControllerTest, MediumQualityAt01_5ScaleIsHandled) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(500, 200);
  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(1.5f, 1.5f), is_decomposable));

  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_TRUE(task);
  EXPECT_TRUE(need_unref);

  TestTileTaskRunner::ProcessTask(task.get());

  DecodedDrawImage decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_TRUE(decoded_draw_image.image());
  // If we decoded the image and cached it, it would be stored in a different
  // SkImageObject.
  EXPECT_TRUE(decoded_draw_image.image() != image);
  EXPECT_EQ(kLow_SkFilterQuality, decoded_draw_image.filter_quality());
  EXPECT_EQ(500, decoded_draw_image.image()->width());
  EXPECT_EQ(200, decoded_draw_image.image()->height());

  controller.DrawWithImageFinished(draw_image, decoded_draw_image);
  controller.UnrefImage(draw_image);
}

TEST(SoftwareImageDecodeControllerTest, MediumQualityAt1_0ScaleIsHandled) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(500, 200);
  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(1.f, 1.f), is_decomposable));

  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_TRUE(task);
  EXPECT_TRUE(need_unref);

  TestTileTaskRunner::ProcessTask(task.get());

  DecodedDrawImage decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_TRUE(decoded_draw_image.image());
  // If we decoded the image and cached it, it would be stored in a different
  // SkImageObject.
  EXPECT_TRUE(decoded_draw_image.image() != image);
  EXPECT_EQ(kLow_SkFilterQuality, decoded_draw_image.filter_quality());
  EXPECT_EQ(500, decoded_draw_image.image()->width());
  EXPECT_EQ(200, decoded_draw_image.image()->height());

  controller.DrawWithImageFinished(draw_image, decoded_draw_image);
  controller.UnrefImage(draw_image);
}

TEST(SoftwareImageDecodeControllerTest, MediumQualityAt0_75ScaleIsHandled) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(500, 200);
  DrawImage draw_image(
      image, SkIRect::MakeWH(image->width(), image->height()), quality,
      CreateMatrix(SkSize::Make(0.75f, 0.75f), is_decomposable));

  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_TRUE(task);
  EXPECT_TRUE(need_unref);

  TestTileTaskRunner::ProcessTask(task.get());

  DecodedDrawImage decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_TRUE(decoded_draw_image.image());
  // If we decoded the image and cached it, it would be stored in a different
  // SkImageObject.
  EXPECT_TRUE(decoded_draw_image.image() != image);
  EXPECT_EQ(kLow_SkFilterQuality, decoded_draw_image.filter_quality());
  EXPECT_EQ(500, decoded_draw_image.image()->width());
  EXPECT_EQ(200, decoded_draw_image.image()->height());

  controller.DrawWithImageFinished(draw_image, decoded_draw_image);
  controller.UnrefImage(draw_image);
}

TEST(SoftwareImageDecodeControllerTest, MediumQualityAt0_5ScaleIsHandled) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(500, 200);
  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));

  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_TRUE(task);
  EXPECT_TRUE(need_unref);

  TestTileTaskRunner::ProcessTask(task.get());

  DecodedDrawImage decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_TRUE(decoded_draw_image.image());
  // If we decoded the image and cached it, it would be stored in a different
  // SkImageObject.
  EXPECT_TRUE(decoded_draw_image.image() != image);
  EXPECT_EQ(kLow_SkFilterQuality, decoded_draw_image.filter_quality());
  EXPECT_EQ(250, decoded_draw_image.image()->width());
  EXPECT_EQ(100, decoded_draw_image.image()->height());

  controller.DrawWithImageFinished(draw_image, decoded_draw_image);
  controller.UnrefImage(draw_image);
}

TEST(SoftwareImageDecodeControllerTest, MediumQualityAt0_49ScaleIsHandled) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(500, 200);
  DrawImage draw_image(
      image, SkIRect::MakeWH(image->width(), image->height()), quality,
      CreateMatrix(SkSize::Make(0.49f, 0.49f), is_decomposable));

  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_TRUE(task);
  EXPECT_TRUE(need_unref);

  TestTileTaskRunner::ProcessTask(task.get());

  DecodedDrawImage decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_TRUE(decoded_draw_image.image());
  // If we decoded the image and cached it, it would be stored in a different
  // SkImageObject.
  EXPECT_TRUE(decoded_draw_image.image() != image);
  EXPECT_EQ(kLow_SkFilterQuality, decoded_draw_image.filter_quality());
  EXPECT_EQ(250, decoded_draw_image.image()->width());
  EXPECT_EQ(100, decoded_draw_image.image()->height());

  controller.DrawWithImageFinished(draw_image, decoded_draw_image);
  controller.UnrefImage(draw_image);
}

TEST(SoftwareImageDecodeControllerTest, MediumQualityAt0_1ScaleIsHandled) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(500, 200);
  DrawImage draw_image(image, SkIRect::MakeWH(image->width(), image->height()),
                       quality,
                       CreateMatrix(SkSize::Make(0.1f, 0.1f), is_decomposable));

  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_TRUE(task);
  EXPECT_TRUE(need_unref);

  TestTileTaskRunner::ProcessTask(task.get());

  DecodedDrawImage decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_TRUE(decoded_draw_image.image());
  // If we decoded the image and cached it, it would be stored in a different
  // SkImageObject.
  EXPECT_TRUE(decoded_draw_image.image() != image);
  EXPECT_EQ(kLow_SkFilterQuality, decoded_draw_image.filter_quality());
  EXPECT_EQ(62, decoded_draw_image.image()->width());
  EXPECT_EQ(25, decoded_draw_image.image()->height());

  controller.DrawWithImageFinished(draw_image, decoded_draw_image);
  controller.UnrefImage(draw_image);
}

TEST(SoftwareImageDecodeControllerTest, MediumQualityAt0_01ScaleIsHandled) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(500, 200);
  DrawImage draw_image(
      image, SkIRect::MakeWH(image->width(), image->height()), quality,
      CreateMatrix(SkSize::Make(0.01f, 0.01f), is_decomposable));

  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_TRUE(task);
  EXPECT_TRUE(need_unref);

  TestTileTaskRunner::ProcessTask(task.get());

  DecodedDrawImage decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_TRUE(decoded_draw_image.image());
  // If we decoded the image and cached it, it would be stored in a different
  // SkImageObject.
  EXPECT_TRUE(decoded_draw_image.image() != image);
  EXPECT_EQ(kLow_SkFilterQuality, decoded_draw_image.filter_quality());
  EXPECT_EQ(7, decoded_draw_image.image()->width());
  EXPECT_EQ(3, decoded_draw_image.image()->height());

  controller.DrawWithImageFinished(draw_image, decoded_draw_image);
  controller.UnrefImage(draw_image);
}

TEST(SoftwareImageDecodeControllerTest, MediumQualityAt0_001ScaleIsHandled) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(500, 200);
  DrawImage draw_image(
      image, SkIRect::MakeWH(image->width(), image->height()), quality,
      CreateMatrix(SkSize::Make(0.001f, 0.001f), is_decomposable));

  scoped_refptr<TileTask> task;
  bool need_unref = controller.GetTaskForImageAndRef(
      draw_image, ImageDecodeController::TracingInfo(), &task);
  EXPECT_FALSE(task);
  EXPECT_FALSE(need_unref);

  DecodedDrawImage decoded_draw_image =
      controller.GetDecodedImageForDraw(draw_image);
  EXPECT_FALSE(decoded_draw_image.image());

  controller.DrawWithImageFinished(draw_image, decoded_draw_image);
}

TEST(SoftwareImageDecodeControllerTest,
     MediumQualityImagesAreTheSameAt0_5And0_49Scale) {
  TestSoftwareImageDecodeController controller;
  bool is_decomposable = true;
  SkFilterQuality quality = kMedium_SkFilterQuality;

  sk_sp<SkImage> image = CreateImage(500, 200);
  DrawImage draw_image_50(
      image, SkIRect::MakeWH(image->width(), image->height()), quality,
      CreateMatrix(SkSize::Make(0.5f, 0.5f), is_decomposable));
  DrawImage draw_image_49(
      image, SkIRect::MakeWH(image->width(), image->height()), quality,
      CreateMatrix(SkSize::Make(0.49f, 0.49f), is_decomposable));

  scoped_refptr<TileTask> task_50;
  bool need_unref_50 = controller.GetTaskForImageAndRef(
      draw_image_50, ImageDecodeController::TracingInfo(), &task_50);
  EXPECT_TRUE(task_50);
  EXPECT_TRUE(need_unref_50);
  scoped_refptr<TileTask> task_49;
  bool need_unref_49 = controller.GetTaskForImageAndRef(
      draw_image_49, ImageDecodeController::TracingInfo(), &task_49);
  EXPECT_TRUE(task_49);
  EXPECT_TRUE(need_unref_49);

  TestTileTaskRunner::ProcessTask(task_49.get());

  DecodedDrawImage decoded_draw_image_50 =
      controller.GetDecodedImageForDraw(draw_image_50);
  EXPECT_TRUE(decoded_draw_image_50.image());
  DecodedDrawImage decoded_draw_image_49 =
      controller.GetDecodedImageForDraw(draw_image_49);
  EXPECT_TRUE(decoded_draw_image_49.image());
  // If we decoded the image and cached it, it would be stored in a different
  // SkImageObject.
  EXPECT_TRUE(decoded_draw_image_50.image() != image);
  EXPECT_TRUE(decoded_draw_image_49.image() != image);
  EXPECT_EQ(kLow_SkFilterQuality, decoded_draw_image_50.filter_quality());
  EXPECT_EQ(kLow_SkFilterQuality, decoded_draw_image_49.filter_quality());
  EXPECT_EQ(250, decoded_draw_image_50.image()->width());
  EXPECT_EQ(250, decoded_draw_image_49.image()->width());
  EXPECT_EQ(100, decoded_draw_image_50.image()->height());
  EXPECT_EQ(100, decoded_draw_image_49.image()->height());

  EXPECT_EQ(decoded_draw_image_50.image(), decoded_draw_image_49.image());

  controller.DrawWithImageFinished(draw_image_50, decoded_draw_image_50);
  controller.UnrefImage(draw_image_50);
  controller.DrawWithImageFinished(draw_image_49, decoded_draw_image_49);
  controller.UnrefImage(draw_image_49);
}

}  // namespace
}  // namespace cc