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platform-external-webrtc/common_video/video_frame_unittest.cc
Ilya Nikolaevskiy 38e9b06151 Reland "Add scaling interface to VideoFrameBuffer" 
(Reland with no changes after the fix to the downstream project)

This can be overriden for kNative frame types to perform scaling efficiently.

Default implementations for existing buffer types require actual
buffer implementation, thus this CL also merges "video_frame"
with "video_frame_I420" build targets.

Originally Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/186303

(Landing with TBR as it's unchaged reland of already approved CL)
TBR=nisse@webrtc.org,sakal@webrtc.org

Bug: webrtc:11976, chromium:1132299
Change-Id: Ia23f7d3e474bd9cdc177104cc5c6d772f04b210f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/187345
Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32362}
2020-10-09 08:30:50 +00:00

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/*
* Copyright (c) 2018 The WebRTC 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 "api/video/video_frame.h"
#include <math.h>
#include <string.h>
#include "api/video/i010_buffer.h"
#include "api/video/i420_buffer.h"
#include "api/video/nv12_buffer.h"
#include "rtc_base/bind.h"
#include "rtc_base/time_utils.h"
#include "test/fake_texture_frame.h"
#include "test/frame_utils.h"
#include "test/gtest.h"
namespace webrtc {
namespace {
// Helper class to delegate calls to appropriate container.
class PlanarYuvBufferFactory {
public:
static rtc::scoped_refptr<PlanarYuvBuffer> Create(VideoFrameBuffer::Type type,
int width,
int height) {
switch (type) {
case VideoFrameBuffer::Type::kI420:
return I420Buffer::Create(width, height);
case VideoFrameBuffer::Type::kI010:
return I010Buffer::Create(width, height);
default:
RTC_NOTREACHED();
}
return nullptr;
}
static rtc::scoped_refptr<PlanarYuvBuffer> Copy(const VideoFrameBuffer& src) {
switch (src.type()) {
case VideoFrameBuffer::Type::kI420:
return I420Buffer::Copy(src);
case VideoFrameBuffer::Type::kI010:
return I010Buffer::Copy(*src.GetI010());
default:
RTC_NOTREACHED();
}
return nullptr;
}
static rtc::scoped_refptr<PlanarYuvBuffer> Rotate(const VideoFrameBuffer& src,
VideoRotation rotation) {
switch (src.type()) {
case VideoFrameBuffer::Type::kI420:
return I420Buffer::Rotate(src, rotation);
case VideoFrameBuffer::Type::kI010:
return I010Buffer::Rotate(*src.GetI010(), rotation);
default:
RTC_NOTREACHED();
}
return nullptr;
}
static rtc::scoped_refptr<PlanarYuvBuffer> CropAndScaleFrom(
const VideoFrameBuffer& src,
int offset_x,
int offset_y,
int crop_width,
int crop_height) {
switch (src.type()) {
case VideoFrameBuffer::Type::kI420: {
rtc::scoped_refptr<I420Buffer> buffer =
I420Buffer::Create(crop_width, crop_height);
buffer->CropAndScaleFrom(*src.GetI420(), offset_x, offset_y, crop_width,
crop_height);
return buffer;
}
case VideoFrameBuffer::Type::kI010: {
rtc::scoped_refptr<I010Buffer> buffer =
I010Buffer::Create(crop_width, crop_height);
buffer->CropAndScaleFrom(*src.GetI010(), offset_x, offset_y, crop_width,
crop_height);
return buffer;
}
default:
RTC_NOTREACHED();
}
return nullptr;
}
static rtc::scoped_refptr<PlanarYuvBuffer> CropAndScaleFrom(
const VideoFrameBuffer& src,
int crop_width,
int crop_height) {
const int out_width =
std::min(src.width(), crop_width * src.height() / crop_height);
const int out_height =
std::min(src.height(), crop_height * src.width() / crop_width);
return CropAndScaleFrom(src, (src.width() - out_width) / 2,
(src.height() - out_height) / 2, out_width,
out_height);
}
static rtc::scoped_refptr<PlanarYuvBuffer>
ScaleFrom(const VideoFrameBuffer& src, int crop_width, int crop_height) {
switch (src.type()) {
case VideoFrameBuffer::Type::kI420: {
rtc::scoped_refptr<I420Buffer> buffer =
I420Buffer::Create(crop_width, crop_height);
buffer->ScaleFrom(*src.GetI420());
return buffer;
}
case VideoFrameBuffer::Type::kI010: {
rtc::scoped_refptr<I010Buffer> buffer =
I010Buffer::Create(crop_width, crop_height);
buffer->ScaleFrom(*src.GetI010());
return buffer;
}
default:
RTC_NOTREACHED();
}
return nullptr;
}
};
rtc::scoped_refptr<PlanarYuvBuffer> CreateGradient(VideoFrameBuffer::Type type,
int width,
int height) {
rtc::scoped_refptr<I420Buffer> buffer(I420Buffer::Create(width, height));
// Initialize with gradient, Y = 128(x/w + y/h), U = 256 x/w, V = 256 y/h
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
buffer->MutableDataY()[x + y * width] =
128 * (x * height + y * width) / (width * height);
}
}
int chroma_width = buffer->ChromaWidth();
int chroma_height = buffer->ChromaHeight();
for (int x = 0; x < chroma_width; x++) {
for (int y = 0; y < chroma_height; y++) {
buffer->MutableDataU()[x + y * chroma_width] =
255 * x / (chroma_width - 1);
buffer->MutableDataV()[x + y * chroma_width] =
255 * y / (chroma_height - 1);
}
}
if (type == VideoFrameBuffer::Type::kI420)
return buffer;
RTC_DCHECK(type == VideoFrameBuffer::Type::kI010);
return I010Buffer::Copy(*buffer);
}
rtc::scoped_refptr<NV12BufferInterface> CreateNV12Gradient(int width,
int height) {
rtc::scoped_refptr<NV12Buffer> buffer(NV12Buffer::Create(width, height));
// Initialize with gradient, Y = 128(x/w + y/h), U = 256 x/w, V = 256 y/h
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
buffer->MutableDataY()[x + y * width] =
128 * (x * height + y * width) / (width * height);
}
}
int chroma_width = buffer->ChromaWidth();
int chroma_height = buffer->ChromaHeight();
for (int x = 0; x < chroma_width; x++) {
for (int y = 0; y < chroma_height; y++) {
buffer->MutableDataUV()[x * 2 + y * buffer->StrideUV()] =
255 * x / (chroma_width - 1);
buffer->MutableDataUV()[x * 2 + 1 + y * buffer->StrideUV()] =
255 * y / (chroma_height - 1);
}
}
return buffer;
}
// The offsets and sizes describe the rectangle extracted from the
// original (gradient) frame, in relative coordinates where the
// original frame correspond to the unit square, 0.0 <= x, y < 1.0.
void CheckCrop(const webrtc::I420BufferInterface& frame,
double offset_x,
double offset_y,
double rel_width,
double rel_height) {
int width = frame.width();
int height = frame.height();
// Check that pixel values in the corners match the gradient used
// for initialization.
for (int i = 0; i < 2; i++) {
for (int j = 0; j < 2; j++) {
// Pixel coordinates of the corner.
int x = i * (width - 1);
int y = j * (height - 1);
// Relative coordinates, range 0.0 - 1.0 correspond to the
// size of the uncropped input frame.
double orig_x = offset_x + i * rel_width;
double orig_y = offset_y + j * rel_height;
EXPECT_NEAR(frame.DataY()[x + y * frame.StrideY()] / 256.0,
(orig_x + orig_y) / 2, 0.02);
EXPECT_NEAR(frame.DataU()[x / 2 + (y / 2) * frame.StrideU()] / 256.0,
orig_x, 0.02);
EXPECT_NEAR(frame.DataV()[x / 2 + (y / 2) * frame.StrideV()] / 256.0,
orig_y, 0.02);
}
}
}
void CheckRotate(int width,
int height,
webrtc::VideoRotation rotation,
const webrtc::I420BufferInterface& rotated) {
int rotated_width = width;
int rotated_height = height;
if (rotation == kVideoRotation_90 || rotation == kVideoRotation_270) {
std::swap(rotated_width, rotated_height);
}
EXPECT_EQ(rotated_width, rotated.width());
EXPECT_EQ(rotated_height, rotated.height());
// Clock-wise order (with 0,0 at top-left)
const struct {
int x;
int y;
} corners[] = {{0, 0}, {1, 0}, {1, 1}, {0, 1}};
// Corresponding corner colors of the frame produced by CreateGradient.
const struct {
int y;
int u;
int v;
} colors[] = {{0, 0, 0}, {127, 255, 0}, {255, 255, 255}, {127, 0, 255}};
int corner_offset = static_cast<int>(rotation) / 90;
for (int i = 0; i < 4; i++) {
int j = (i + corner_offset) % 4;
int x = corners[j].x * (rotated_width - 1);
int y = corners[j].y * (rotated_height - 1);
EXPECT_EQ(colors[i].y, rotated.DataY()[x + y * rotated.StrideY()]);
EXPECT_EQ(colors[i].u,
rotated.DataU()[(x / 2) + (y / 2) * rotated.StrideU()]);
EXPECT_EQ(colors[i].v,
rotated.DataV()[(x / 2) + (y / 2) * rotated.StrideV()]);
}
}
int GetU(rtc::scoped_refptr<PlanarYuvBuffer> buf, int col, int row) {
if (buf->type() == VideoFrameBuffer::Type::kI420) {
return buf->GetI420()
->DataU()[row / 2 * buf->GetI420()->StrideU() + col / 2];
} else {
return buf->GetI010()
->DataU()[row / 2 * buf->GetI010()->StrideU() + col / 2];
}
}
int GetV(rtc::scoped_refptr<PlanarYuvBuffer> buf, int col, int row) {
if (buf->type() == VideoFrameBuffer::Type::kI420) {
return buf->GetI420()
->DataV()[row / 2 * buf->GetI420()->StrideV() + col / 2];
} else {
return buf->GetI010()
->DataV()[row / 2 * buf->GetI010()->StrideV() + col / 2];
}
}
int GetY(rtc::scoped_refptr<PlanarYuvBuffer> buf, int col, int row) {
if (buf->type() == VideoFrameBuffer::Type::kI420) {
return buf->GetI420()->DataY()[row * buf->GetI420()->StrideY() + col];
} else {
return buf->GetI010()->DataY()[row * buf->GetI010()->StrideY() + col];
}
}
void PasteFromBuffer(PlanarYuvBuffer* canvas,
const PlanarYuvBuffer& picture,
int offset_col,
int offset_row) {
if (canvas->type() == VideoFrameBuffer::Type::kI420) {
I420Buffer* buf = static_cast<I420Buffer*>(canvas);
buf->PasteFrom(*picture.GetI420(), offset_col, offset_row);
} else {
I010Buffer* buf = static_cast<I010Buffer*>(canvas);
buf->PasteFrom(*picture.GetI010(), offset_col, offset_row);
}
}
} // namespace
TEST(TestVideoFrame, WidthHeightValues) {
VideoFrame frame =
VideoFrame::Builder()
.set_video_frame_buffer(I420Buffer::Create(10, 10, 10, 14, 90))
.set_rotation(webrtc::kVideoRotation_0)
.set_timestamp_ms(789)
.build();
const int valid_value = 10;
EXPECT_EQ(valid_value, frame.width());
EXPECT_EQ(valid_value, frame.height());
frame.set_timestamp(123u);
EXPECT_EQ(123u, frame.timestamp());
frame.set_ntp_time_ms(456);
EXPECT_EQ(456, frame.ntp_time_ms());
EXPECT_EQ(789, frame.render_time_ms());
}
TEST(TestVideoFrame, ShallowCopy) {
uint32_t timestamp = 1;
int64_t ntp_time_ms = 2;
int64_t timestamp_us = 3;
int stride_y = 15;
int stride_u = 10;
int stride_v = 10;
int width = 15;
int height = 15;
const int kSizeY = 400;
const int kSizeU = 100;
const int kSizeV = 100;
const VideoRotation kRotation = kVideoRotation_270;
uint8_t buffer_y[kSizeY];
uint8_t buffer_u[kSizeU];
uint8_t buffer_v[kSizeV];
memset(buffer_y, 16, kSizeY);
memset(buffer_u, 8, kSizeU);
memset(buffer_v, 4, kSizeV);
VideoFrame frame1 = VideoFrame::Builder()
.set_video_frame_buffer(I420Buffer::Copy(
width, height, buffer_y, stride_y, buffer_u,
stride_u, buffer_v, stride_v))
.set_rotation(kRotation)
.set_timestamp_us(0)
.build();
frame1.set_timestamp(timestamp);
frame1.set_ntp_time_ms(ntp_time_ms);
frame1.set_timestamp_us(timestamp_us);
VideoFrame frame2(frame1);
EXPECT_EQ(frame1.video_frame_buffer(), frame2.video_frame_buffer());
const webrtc::I420BufferInterface* yuv1 =
frame1.video_frame_buffer()->GetI420();
const webrtc::I420BufferInterface* yuv2 =
frame2.video_frame_buffer()->GetI420();
EXPECT_EQ(yuv1->DataY(), yuv2->DataY());
EXPECT_EQ(yuv1->DataU(), yuv2->DataU());
EXPECT_EQ(yuv1->DataV(), yuv2->DataV());
EXPECT_EQ(frame2.timestamp(), frame1.timestamp());
EXPECT_EQ(frame2.ntp_time_ms(), frame1.ntp_time_ms());
EXPECT_EQ(frame2.timestamp_us(), frame1.timestamp_us());
EXPECT_EQ(frame2.rotation(), frame1.rotation());
frame2.set_timestamp(timestamp + 1);
frame2.set_ntp_time_ms(ntp_time_ms + 1);
frame2.set_timestamp_us(timestamp_us + 1);
frame2.set_rotation(kVideoRotation_90);
EXPECT_NE(frame2.timestamp(), frame1.timestamp());
EXPECT_NE(frame2.ntp_time_ms(), frame1.ntp_time_ms());
EXPECT_NE(frame2.timestamp_us(), frame1.timestamp_us());
EXPECT_NE(frame2.rotation(), frame1.rotation());
}
TEST(TestVideoFrame, TextureInitialValues) {
VideoFrame frame = test::FakeNativeBuffer::CreateFrame(
640, 480, 100, 10, webrtc::kVideoRotation_0);
EXPECT_EQ(640, frame.width());
EXPECT_EQ(480, frame.height());
EXPECT_EQ(100u, frame.timestamp());
EXPECT_EQ(10, frame.render_time_ms());
ASSERT_TRUE(frame.video_frame_buffer() != nullptr);
EXPECT_TRUE(frame.video_frame_buffer()->type() ==
VideoFrameBuffer::Type::kNative);
frame.set_timestamp(200);
EXPECT_EQ(200u, frame.timestamp());
frame.set_timestamp_us(20);
EXPECT_EQ(20, frame.timestamp_us());
}
class TestPlanarYuvBuffer
: public ::testing::TestWithParam<VideoFrameBuffer::Type> {};
rtc::scoped_refptr<I420Buffer> CreateAndFillBuffer() {
auto buf = I420Buffer::Create(20, 10);
memset(buf->MutableDataY(), 1, 200);
memset(buf->MutableDataU(), 2, 50);
memset(buf->MutableDataV(), 3, 50);
return buf;
}
TEST_P(TestPlanarYuvBuffer, Copy) {
rtc::scoped_refptr<PlanarYuvBuffer> buf1;
switch (GetParam()) {
case VideoFrameBuffer::Type::kI420: {
buf1 = CreateAndFillBuffer();
break;
}
case VideoFrameBuffer::Type::kI010: {
buf1 = I010Buffer::Copy(*CreateAndFillBuffer());
break;
}
default:
RTC_NOTREACHED();
}
rtc::scoped_refptr<PlanarYuvBuffer> buf2 =
PlanarYuvBufferFactory::Copy(*buf1);
EXPECT_TRUE(test::FrameBufsEqual(buf1->ToI420(), buf2->ToI420()));
}
TEST_P(TestPlanarYuvBuffer, Scale) {
rtc::scoped_refptr<PlanarYuvBuffer> buf =
CreateGradient(GetParam(), 200, 100);
// Pure scaling, no cropping.
rtc::scoped_refptr<PlanarYuvBuffer> scaled_buffer =
PlanarYuvBufferFactory::ScaleFrom(*buf, 150, 75);
CheckCrop(*scaled_buffer->ToI420(), 0.0, 0.0, 1.0, 1.0);
}
TEST_P(TestPlanarYuvBuffer, CropXCenter) {
rtc::scoped_refptr<PlanarYuvBuffer> buf =
CreateGradient(GetParam(), 200, 100);
// Pure center cropping, no scaling.
rtc::scoped_refptr<PlanarYuvBuffer> scaled_buffer =
PlanarYuvBufferFactory::CropAndScaleFrom(*buf, 50, 0, 100, 100);
CheckCrop(*scaled_buffer->ToI420(), 0.25, 0.0, 0.5, 1.0);
}
TEST_P(TestPlanarYuvBuffer, CropXNotCenter) {
rtc::scoped_refptr<PlanarYuvBuffer> buf =
CreateGradient(GetParam(), 200, 100);
// Non-center cropping, no scaling.
rtc::scoped_refptr<PlanarYuvBuffer> scaled_buffer =
PlanarYuvBufferFactory::CropAndScaleFrom(*buf, 25, 0, 100, 100);
CheckCrop(*scaled_buffer->ToI420(), 0.125, 0.0, 0.5, 1.0);
}
TEST_P(TestPlanarYuvBuffer, CropYCenter) {
rtc::scoped_refptr<PlanarYuvBuffer> buf =
CreateGradient(GetParam(), 100, 200);
// Pure center cropping, no scaling.
rtc::scoped_refptr<PlanarYuvBuffer> scaled_buffer =
PlanarYuvBufferFactory::CropAndScaleFrom(*buf, 0, 50, 100, 100);
CheckCrop(*scaled_buffer->ToI420(), 0.0, 0.25, 1.0, 0.5);
}
TEST_P(TestPlanarYuvBuffer, CropYNotCenter) {
rtc::scoped_refptr<PlanarYuvBuffer> buf =
CreateGradient(GetParam(), 100, 200);
// Pure center cropping, no scaling.
rtc::scoped_refptr<PlanarYuvBuffer> scaled_buffer =
PlanarYuvBufferFactory::CropAndScaleFrom(*buf, 0, 25, 100, 100);
CheckCrop(*scaled_buffer->ToI420(), 0.0, 0.125, 1.0, 0.5);
}
TEST_P(TestPlanarYuvBuffer, CropAndScale16x9) {
rtc::scoped_refptr<PlanarYuvBuffer> buf =
CreateGradient(GetParam(), 640, 480);
// Pure center cropping, no scaling.
rtc::scoped_refptr<PlanarYuvBuffer> scaled_buffer =
PlanarYuvBufferFactory::CropAndScaleFrom(*buf, 320, 180);
CheckCrop(*scaled_buffer->ToI420(), 0.0, 0.125, 1.0, 0.75);
}
TEST_P(TestPlanarYuvBuffer, PastesIntoBuffer) {
const int kOffsetx = 20;
const int kOffsety = 30;
const int kPicSize = 20;
const int kWidth = 160;
const int kHeight = 80;
rtc::scoped_refptr<PlanarYuvBuffer> buf =
CreateGradient(GetParam(), kWidth, kHeight);
rtc::scoped_refptr<PlanarYuvBuffer> original =
CreateGradient(GetParam(), kWidth, kHeight);
rtc::scoped_refptr<PlanarYuvBuffer> picture =
CreateGradient(GetParam(), kPicSize, kPicSize);
rtc::scoped_refptr<PlanarYuvBuffer> odd_picture =
CreateGradient(GetParam(), kPicSize + 1, kPicSize - 1);
PasteFromBuffer(buf.get(), *picture, kOffsetx, kOffsety);
for (int i = 0; i < kWidth; ++i) {
for (int j = 0; j < kHeight; ++j) {
bool is_inside = i >= kOffsetx && i < kOffsetx + kPicSize &&
j >= kOffsety && j < kOffsety + kPicSize;
if (!is_inside) {
EXPECT_EQ(GetU(original, i, j), GetU(buf, i, j));
EXPECT_EQ(GetV(original, i, j), GetV(buf, i, j));
EXPECT_EQ(GetY(original, i, j), GetY(buf, i, j));
} else {
EXPECT_EQ(GetU(picture, i - kOffsetx, j - kOffsety), GetU(buf, i, j));
EXPECT_EQ(GetV(picture, i - kOffsetx, j - kOffsety), GetV(buf, i, j));
EXPECT_EQ(GetY(picture, i - kOffsetx, j - kOffsety), GetY(buf, i, j));
}
}
}
}
INSTANTIATE_TEST_SUITE_P(All,
TestPlanarYuvBuffer,
::testing::Values(VideoFrameBuffer::Type::kI420,
VideoFrameBuffer::Type::kI010));
TEST(TestNV12Buffer, CropAndScale) {
const int kSourceWidth = 640;
const int kSourceHeight = 480;
const int kScaledWidth = 320;
const int kScaledHeight = 240;
const int kCropLeft = 40;
const int kCropTop = 30;
const int kCropRight = 0;
const int kCropBottom = 30;
rtc::scoped_refptr<VideoFrameBuffer> buf =
CreateNV12Gradient(kSourceWidth, kSourceHeight);
rtc::scoped_refptr<VideoFrameBuffer> scaled_buffer = buf->CropAndScale(
kCropLeft, kCropTop, kSourceWidth - kCropLeft - kCropRight,
kSourceHeight - kCropTop - kCropBottom, kScaledWidth, kScaledHeight);
// Parameters to CheckCrop indicate what part of the source frame is in the
// scaled frame.
const float kOffsetX = (kCropLeft + 0.0) / kSourceWidth;
const float kOffsetY = (kCropTop + 0.0) / kSourceHeight;
const float kRelativeWidth =
(kSourceWidth - kCropLeft - kCropRight + 0.0) / kSourceWidth;
const float kRelativeHeight =
(kSourceHeight - kCropTop - kCropBottom + 0.0) / kSourceHeight;
CheckCrop(*scaled_buffer->ToI420(), kOffsetX, kOffsetY, kRelativeWidth,
kRelativeHeight);
}
class TestPlanarYuvBufferRotate
: public ::testing::TestWithParam<
std::tuple<webrtc::VideoRotation, VideoFrameBuffer::Type>> {};
TEST_P(TestPlanarYuvBufferRotate, Rotates) {
const webrtc::VideoRotation rotation = std::get<0>(GetParam());
const VideoFrameBuffer::Type type = std::get<1>(GetParam());
rtc::scoped_refptr<PlanarYuvBuffer> buffer = CreateGradient(type, 640, 480);
rtc::scoped_refptr<PlanarYuvBuffer> rotated_buffer =
PlanarYuvBufferFactory::Rotate(*buffer, rotation);
CheckRotate(640, 480, rotation, *rotated_buffer->ToI420());
}
INSTANTIATE_TEST_SUITE_P(
Rotate,
TestPlanarYuvBufferRotate,
::testing::Combine(::testing::Values(kVideoRotation_0,
kVideoRotation_90,
kVideoRotation_180,
kVideoRotation_270),
::testing::Values(VideoFrameBuffer::Type::kI420,
VideoFrameBuffer::Type::kI010)));
TEST(TestUpdateRect, CanCompare) {
VideoFrame::UpdateRect a = {0, 0, 100, 200};
VideoFrame::UpdateRect b = {0, 0, 100, 200};
VideoFrame::UpdateRect c = {1, 0, 100, 200};
VideoFrame::UpdateRect d = {0, 1, 100, 200};
EXPECT_TRUE(a == b);
EXPECT_FALSE(a == c);
EXPECT_FALSE(a == d);
}
TEST(TestUpdateRect, ComputesIsEmpty) {
VideoFrame::UpdateRect a = {0, 0, 0, 0};
VideoFrame::UpdateRect b = {0, 0, 100, 200};
VideoFrame::UpdateRect c = {1, 100, 0, 0};
VideoFrame::UpdateRect d = {1, 100, 100, 200};
EXPECT_TRUE(a.IsEmpty());
EXPECT_FALSE(b.IsEmpty());
EXPECT_TRUE(c.IsEmpty());
EXPECT_FALSE(d.IsEmpty());
}
TEST(TestUpdateRectUnion, NonIntersecting) {
VideoFrame::UpdateRect a = {0, 0, 10, 20};
VideoFrame::UpdateRect b = {100, 200, 10, 20};
a.Union(b);
EXPECT_EQ(a, VideoFrame::UpdateRect({0, 0, 110, 220}));
}
TEST(TestUpdateRectUnion, Intersecting) {
VideoFrame::UpdateRect a = {0, 0, 10, 10};
VideoFrame::UpdateRect b = {5, 5, 30, 20};
a.Union(b);
EXPECT_EQ(a, VideoFrame::UpdateRect({0, 0, 35, 25}));
}
TEST(TestUpdateRectUnion, OneInsideAnother) {
VideoFrame::UpdateRect a = {0, 0, 100, 100};
VideoFrame::UpdateRect b = {5, 5, 30, 20};
a.Union(b);
EXPECT_EQ(a, VideoFrame::UpdateRect({0, 0, 100, 100}));
}
TEST(TestUpdateRectIntersect, NonIntersecting) {
VideoFrame::UpdateRect a = {0, 0, 10, 20};
VideoFrame::UpdateRect b = {100, 200, 10, 20};
a.Intersect(b);
EXPECT_EQ(a, VideoFrame::UpdateRect({0, 0, 0, 0}));
}
TEST(TestUpdateRectIntersect, Intersecting) {
VideoFrame::UpdateRect a = {0, 0, 10, 10};
VideoFrame::UpdateRect b = {5, 5, 30, 20};
a.Intersect(b);
EXPECT_EQ(a, VideoFrame::UpdateRect({5, 5, 5, 5}));
}
TEST(TestUpdateRectIntersect, OneInsideAnother) {
VideoFrame::UpdateRect a = {0, 0, 100, 100};
VideoFrame::UpdateRect b = {5, 5, 30, 20};
a.Intersect(b);
EXPECT_EQ(a, VideoFrame::UpdateRect({5, 5, 30, 20}));
}
TEST(TestUpdateRectScale, NoScale) {
const int width = 640;
const int height = 480;
VideoFrame::UpdateRect a = {100, 50, 100, 200};
VideoFrame::UpdateRect scaled =
a.ScaleWithFrame(width, height, 0, 0, width, height, width, height);
EXPECT_EQ(scaled, VideoFrame::UpdateRect({100, 50, 100, 200}));
}
TEST(TestUpdateRectScale, CropOnly) {
const int width = 640;
const int height = 480;
VideoFrame::UpdateRect a = {100, 50, 100, 200};
VideoFrame::UpdateRect scaled = a.ScaleWithFrame(
width, height, 10, 10, width - 20, height - 20, width - 20, height - 20);
EXPECT_EQ(scaled, VideoFrame::UpdateRect({90, 40, 100, 200}));
}
TEST(TestUpdateRectScale, CropOnlyToOddOffset) {
const int width = 640;
const int height = 480;
VideoFrame::UpdateRect a = {100, 50, 100, 200};
VideoFrame::UpdateRect scaled = a.ScaleWithFrame(
width, height, 5, 5, width - 10, height - 10, width - 10, height - 10);
EXPECT_EQ(scaled, VideoFrame::UpdateRect({94, 44, 102, 202}));
}
TEST(TestUpdateRectScale, ScaleByHalf) {
const int width = 640;
const int height = 480;
VideoFrame::UpdateRect a = {100, 60, 100, 200};
VideoFrame::UpdateRect scaled = a.ScaleWithFrame(
width, height, 0, 0, width, height, width / 2, height / 2);
// Scaled by half and +2 pixels in all directions.
EXPECT_EQ(scaled, VideoFrame::UpdateRect({48, 28, 54, 104}));
}
TEST(TestUpdateRectScale, CropToUnchangedRegionBelowUpdateRect) {
const int width = 640;
const int height = 480;
VideoFrame::UpdateRect a = {100, 60, 100, 200};
VideoFrame::UpdateRect scaled = a.ScaleWithFrame(
width, height, (width - 10) / 2, (height - 10) / 2, 10, 10, 10, 10);
// Update is out of the cropped frame.
EXPECT_EQ(scaled, VideoFrame::UpdateRect({0, 0, 0, 0}));
}
TEST(TestUpdateRectScale, CropToUnchangedRegionAboveUpdateRect) {
const int width = 640;
const int height = 480;
VideoFrame::UpdateRect a = {600, 400, 10, 10};
VideoFrame::UpdateRect scaled = a.ScaleWithFrame(
width, height, (width - 10) / 2, (height - 10) / 2, 10, 10, 10, 10);
// Update is out of the cropped frame.
EXPECT_EQ(scaled, VideoFrame::UpdateRect({0, 0, 0, 0}));
}
TEST(TestUpdateRectScale, CropInsideUpdate) {
const int width = 640;
const int height = 480;
VideoFrame::UpdateRect a = {300, 200, 100, 100};
VideoFrame::UpdateRect scaled = a.ScaleWithFrame(
width, height, (width - 10) / 2, (height - 10) / 2, 10, 10, 10, 10);
// Cropped frame is inside the update rect.
EXPECT_EQ(scaled, VideoFrame::UpdateRect({0, 0, 10, 10}));
}
TEST(TestUpdateRectScale, CropAndScaleByHalf) {
const int width = 640;
const int height = 480;
VideoFrame::UpdateRect a = {100, 60, 100, 200};
VideoFrame::UpdateRect scaled =
a.ScaleWithFrame(width, height, 10, 10, width - 20, height - 20,
(width - 20) / 2, (height - 20) / 2);
// Scaled by half and +3 pixels in all directions, because of odd offset after
// crop and scale.
EXPECT_EQ(scaled, VideoFrame::UpdateRect({42, 22, 56, 106}));
}
} // namespace webrtc
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