remoting/base/codec_test.cc - chromium/src - Git at Google

 // 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 <deque>
 #include <stdlib.h>

 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "media/base/video_frame.h"
 #include "remoting/base/base_mock_objects.h"
 #include "remoting/base/codec_test.h"
 #include "remoting/base/decoder.h"
 #include "remoting/base/encoder.h"
 #include "remoting/base/util.h"
 #include "testing/gtest/include/gtest/gtest.h"

 static const int kWidth = 320;
 static const int kHeight = 240;
 static const int kBytesPerPixel = 4;

 // Some sample rects for testing.
 static const SkIRect kTestRects[] = {
   SkIRect::MakeXYWH(0, 0, kWidth, kHeight),
   SkIRect::MakeXYWH(0, 0, kWidth / 2, kHeight / 2),
   SkIRect::MakeXYWH(kWidth / 2, kHeight / 2, kWidth / 2, kHeight / 2),
   SkIRect::MakeXYWH(16, 16, 16, 16),
   SkIRect::MakeXYWH(128, 64, 32, 32),
 };

 namespace remoting {

 // A class to test the message output of the encoder.
 class EncoderMessageTester {
  public:
   EncoderMessageTester()
       : begin_rect_(0),
         rect_data_(0),
         end_rect_(0),
         added_rects_(0),
         state_(kWaitingForBeginRect),
         strict_(false) {
   }

   ~EncoderMessageTester() {
     EXPECT_EQ(begin_rect_, end_rect_);
     EXPECT_GT(begin_rect_, 0);
     EXPECT_EQ(kWaitingForBeginRect, state_);
     if (strict_) {
       EXPECT_EQ(added_rects_, begin_rect_);
     }
   }

   // Test that we received the correct packet.
   void ReceivedPacket(VideoPacket* packet) {
     if (state_ == kWaitingForBeginRect) {
       EXPECT_TRUE((packet->flags() & VideoPacket::FIRST_PACKET) != 0);
       state_ = kWaitingForRectData;
       ++begin_rect_;

       if (strict_) {
         SkIRect rect = rects_.front();
         rects_.pop_front();
         EXPECT_EQ(rect.fLeft, packet->format().x());
         EXPECT_EQ(rect.fTop, packet->format().y());
         EXPECT_EQ(rect.width(), packet->format().width());
         EXPECT_EQ(rect.height(), packet->format().height());
       }
     } else {
       EXPECT_FALSE((packet->flags() & VideoPacket::FIRST_PACKET) != 0);
     }

     if (state_ == kWaitingForRectData) {
       if (packet->has_data()) {
         ++rect_data_;
       }

       if ((packet->flags() & VideoPacket::LAST_PACKET) != 0) {
         // Expect that we have received some data.
         EXPECT_GT(rect_data_, 0);
         rect_data_ = 0;
         state_ = kWaitingForBeginRect;
         ++end_rect_;
       }

       if ((packet->flags() & VideoPacket::LAST_PARTITION) != 0) {
         // LAST_PARTITION must always be marked with LAST_PACKET.
         EXPECT_TRUE((packet->flags() & VideoPacket::LAST_PACKET) != 0);
       }
     }
   }

   void set_strict(bool strict) {
     strict_ = strict;
   }

   void AddRects(const SkIRect* rects, int count) {
     rects_.insert(rects_.begin() + rects_.size(), rects, rects + count);
     added_rects_ += count;
   }

  private:
   enum State {
     kWaitingForBeginRect,
     kWaitingForRectData,
   };

   int begin_rect_;
   int rect_data_;
   int end_rect_;
   int added_rects_;
   State state_;
   bool strict_;

   std::deque<SkIRect> rects_;

   DISALLOW_COPY_AND_ASSIGN(EncoderMessageTester);
 };

 class DecoderTester {
  public:
   DecoderTester(Decoder* decoder)
       : strict_(false),
         decoder_(decoder) {
     image_data_.reset(new uint8[kWidth * kHeight * kBytesPerPixel]);
     EXPECT_TRUE(image_data_.get());
     decoder_->Initialize(SkISize::Make(kWidth, kHeight));
   }

   void Reset() {
     expected_region_.setEmpty();
     update_region_.setEmpty();
   }

   void ReceivedPacket(VideoPacket* packet) {
     Decoder::DecodeResult result = decoder_->DecodePacket(packet);

     ASSERT_NE(Decoder::DECODE_ERROR, result);

     if (result == Decoder::DECODE_DONE) {
       decoder_->RenderFrame(SkISize::Make(kWidth, kHeight),
                             SkIRect::MakeXYWH(0, 0, kWidth, kHeight),
                             image_data_.get(),
                             kWidth * kBytesPerPixel,
                             &update_region_);
     }
   }

   void set_strict(bool strict) {
     strict_ = strict;
   }

   void set_capture_data(scoped_refptr<CaptureData> data) {
     capture_data_ = data;
   }

   void AddRects(const SkIRect* rects, int count) {
     SkRegion new_rects;
     new_rects.setRects(rects, count);
     expected_region_.op(new_rects, SkRegion::kUnion_Op);
   }

   void VerifyResults() {
     if (!strict_)
       return;

     ASSERT_TRUE(capture_data_.get());

     // Test the content of the update region.
     EXPECT_EQ(expected_region_, update_region_);
     for (SkRegion::Iterator i(update_region_); !i.done(); i.next()) {
       const int stride = kWidth * kBytesPerPixel;
       EXPECT_EQ(stride, capture_data_->data_planes().strides[0]);
       const int offset =  stride * i.rect().top() +
           kBytesPerPixel * i.rect().left();
       const uint8* original = capture_data_->data_planes().data[0] + offset;
       const uint8* decoded = image_data_.get() + offset;
       const int row_size = kBytesPerPixel * i.rect().width();
       for (int y = 0; y < i.rect().height(); ++y) {
         EXPECT_EQ(0, memcmp(original, decoded, row_size))
             << "Row " << y << " is different";
         original += stride;
         decoded += stride;
       }
     }
   }

  private:
   bool strict_;
   SkRegion expected_region_;
   SkRegion update_region_;
   Decoder* decoder_;
   scoped_array<uint8> image_data_;
   scoped_refptr<CaptureData> capture_data_;

   DISALLOW_COPY_AND_ASSIGN(DecoderTester);
 };

 // The EncoderTester provides a hook for retrieving the data, and passing the
 // message to other subprograms for validaton.
 class EncoderTester {
  public:
   EncoderTester(EncoderMessageTester* message_tester)
       : message_tester_(message_tester),
         decoder_tester_(NULL),
         data_available_(0) {
   }

   ~EncoderTester() {
     EXPECT_GT(data_available_, 0);
   }

   void DataAvailable(scoped_ptr<VideoPacket> packet) {
     ++data_available_;
     message_tester_->ReceivedPacket(packet.get());

     // Send the message to the DecoderTester.
     if (decoder_tester_) {
       decoder_tester_->ReceivedPacket(packet.get());
     }
   }

   void AddRects(const SkIRect* rects, int count) {
     message_tester_->AddRects(rects, count);
   }

   void set_decoder_tester(DecoderTester* decoder_tester) {
     decoder_tester_ = decoder_tester;
   }

  private:
   EncoderMessageTester* message_tester_;
   DecoderTester* decoder_tester_;
   int data_available_;

   DISALLOW_COPY_AND_ASSIGN(EncoderTester);
 };

 scoped_refptr<CaptureData> PrepareEncodeData(media::VideoFrame::Format format,
                                              uint8** memory) {
   // TODO(hclam): Support also YUV format.
   CHECK_EQ(format, media::VideoFrame::RGB32);
   int size = kWidth * kHeight * kBytesPerPixel;

   *memory = new uint8[size];
   srand(0);
   for (int i = 0; i < size; ++i) {
     (*memory)[i] = rand() % 256;
   }

   DataPlanes planes;
   memset(planes.data, 0, sizeof(planes.data));
   memset(planes.strides, 0, sizeof(planes.strides));
   planes.data[0] = *memory;
   planes.strides[0] = kWidth * kBytesPerPixel;

   scoped_refptr<CaptureData> data =
       new CaptureData(planes, SkISize::Make(kWidth, kHeight), format);
   return data;
 }

 static void TestEncodingRects(Encoder* encoder,
                               EncoderTester* tester,
                               scoped_refptr<CaptureData> data,
                               const SkIRect* rects, int count) {
   data->mutable_dirty_region().setEmpty();
   for (int i = 0; i < count; ++i) {
     data->mutable_dirty_region().op(rects[i], SkRegion::kUnion_Op);
   }
   tester->AddRects(rects, count);

   encoder->Encode(data, true, base::Bind(
       &EncoderTester::DataAvailable, base::Unretained(tester)));
 }

 void TestEncoder(Encoder* encoder, bool strict) {
   EncoderMessageTester message_tester;
   message_tester.set_strict(strict);

   EncoderTester tester(&message_tester);

   uint8* memory;
   scoped_refptr<CaptureData> data =
       PrepareEncodeData(media::VideoFrame::RGB32, &memory);
   scoped_array<uint8> memory_wrapper(memory);

   TestEncodingRects(encoder, &tester, data, kTestRects, 1);
   TestEncodingRects(encoder, &tester, data, kTestRects + 1, 1);
   TestEncodingRects(encoder, &tester, data, kTestRects + 2, 1);
   TestEncodingRects(encoder, &tester, data, kTestRects + 3, 2);
 }

 static void TestEncodeDecodeRects(Encoder* encoder,
                                   EncoderTester* encoder_tester,
                                   DecoderTester* decoder_tester,
                                   scoped_refptr<CaptureData> data,
                                   const SkIRect* rects, int count) {
   data->mutable_dirty_region().setRects(rects, count);
   encoder_tester->AddRects(rects, count);
   decoder_tester->AddRects(rects, count);

   // Generate random data for the updated region.
   srand(0);
   for (int i = 0; i < count; ++i) {
     CHECK_EQ(data->pixel_format(), media::VideoFrame::RGB32);
     const int bytes_per_pixel = 4;  // Because of RGB32 on previous line.
     const int row_size = bytes_per_pixel * rects[i].width();
     uint8* memory = data->data_planes().data[0] +
       data->data_planes().strides[0] * rects[i].top() +
       bytes_per_pixel * rects[i].left();
     for (int y = 0; y < rects[i].height(); ++y) {
       for (int x = 0; x < row_size; ++x)
         memory[x] = rand() % 256;
       memory += data->data_planes().strides[0];
     }
   }

   encoder->Encode(data, true, base::Bind(&EncoderTester::DataAvailable,
                                          base::Unretained(encoder_tester)));
   decoder_tester->VerifyResults();
   decoder_tester->Reset();
 }

 void TestEncoderDecoder(Encoder* encoder, Decoder* decoder, bool strict) {
   EncoderMessageTester message_tester;
   message_tester.set_strict(strict);

   EncoderTester encoder_tester(&message_tester);

   uint8* memory;
   scoped_refptr<CaptureData> data =
       PrepareEncodeData(media::VideoFrame::RGB32, &memory);
   scoped_array<uint8> memory_wrapper(memory);

   DecoderTester decoder_tester(decoder);
   decoder_tester.set_strict(strict);
   decoder_tester.set_capture_data(data);
   encoder_tester.set_decoder_tester(&decoder_tester);

   TestEncodeDecodeRects(encoder, &encoder_tester, &decoder_tester, data,
                         kTestRects, 1);
   TestEncodeDecodeRects(encoder, &encoder_tester, &decoder_tester, data,
                         kTestRects + 1, 1);
   TestEncodeDecodeRects(encoder, &encoder_tester, &decoder_tester, data,
                         kTestRects + 2, 1);
   TestEncodeDecodeRects(encoder, &encoder_tester, &decoder_tester, data,
                         kTestRects + 3, 2);
 }

 }  // namespace remoting
	// 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 <deque>
	#include <stdlib.h>

	#include "base/bind.h"
	#include "base/logging.h"
	#include "base/memory/scoped_ptr.h"
	#include "media/base/video_frame.h"
	#include "remoting/base/base_mock_objects.h"
	#include "remoting/base/codec_test.h"
	#include "remoting/base/decoder.h"
	#include "remoting/base/encoder.h"
	#include "remoting/base/util.h"
	#include "testing/gtest/include/gtest/gtest.h"

	static const int kWidth = 320;
	static const int kHeight = 240;
	static const int kBytesPerPixel = 4;

	// Some sample rects for testing.
	static const SkIRect kTestRects[] = {
	SkIRect::MakeXYWH(0, 0, kWidth, kHeight),
	SkIRect::MakeXYWH(0, 0, kWidth / 2, kHeight / 2),
	SkIRect::MakeXYWH(kWidth / 2, kHeight / 2, kWidth / 2, kHeight / 2),
	SkIRect::MakeXYWH(16, 16, 16, 16),
	SkIRect::MakeXYWH(128, 64, 32, 32),
	};

	namespace remoting {

	// A class to test the message output of the encoder.
	class EncoderMessageTester {
	public:
	EncoderMessageTester()
	: begin_rect_(0),
	rect_data_(0),
	end_rect_(0),
	added_rects_(0),
	state_(kWaitingForBeginRect),
	strict_(false) {
	}

	~EncoderMessageTester() {
	EXPECT_EQ(begin_rect_, end_rect_);
	EXPECT_GT(begin_rect_, 0);
	EXPECT_EQ(kWaitingForBeginRect, state_);
	if (strict_) {
	EXPECT_EQ(added_rects_, begin_rect_);
	}
	}

	// Test that we received the correct packet.
	void ReceivedPacket(VideoPacket* packet) {
	if (state_ == kWaitingForBeginRect) {
	EXPECT_TRUE((packet->flags() & VideoPacket::FIRST_PACKET) != 0);
	state_ = kWaitingForRectData;
	++begin_rect_;

	if (strict_) {
	SkIRect rect = rects_.front();
	rects_.pop_front();
	EXPECT_EQ(rect.fLeft, packet->format().x());
	EXPECT_EQ(rect.fTop, packet->format().y());
	EXPECT_EQ(rect.width(), packet->format().width());
	EXPECT_EQ(rect.height(), packet->format().height());
	}
	} else {
	EXPECT_FALSE((packet->flags() & VideoPacket::FIRST_PACKET) != 0);
	}

	if (state_ == kWaitingForRectData) {
	if (packet->has_data()) {
	++rect_data_;
	}

	if ((packet->flags() & VideoPacket::LAST_PACKET) != 0) {
	// Expect that we have received some data.
	EXPECT_GT(rect_data_, 0);
	rect_data_ = 0;
	state_ = kWaitingForBeginRect;
	++end_rect_;
	}

	if ((packet->flags() & VideoPacket::LAST_PARTITION) != 0) {
	// LAST_PARTITION must always be marked with LAST_PACKET.
	EXPECT_TRUE((packet->flags() & VideoPacket::LAST_PACKET) != 0);
	}
	}
	}

	void set_strict(bool strict) {
	strict_ = strict;
	}

	void AddRects(const SkIRect* rects, int count) {
	rects_.insert(rects_.begin() + rects_.size(), rects, rects + count);
	added_rects_ += count;
	}

	private:
	enum State {
	kWaitingForBeginRect,
	kWaitingForRectData,
	};

	int begin_rect_;
	int rect_data_;
	int end_rect_;
	int added_rects_;
	State state_;
	bool strict_;

	std::deque<SkIRect> rects_;

	DISALLOW_COPY_AND_ASSIGN(EncoderMessageTester);
	};

	class DecoderTester {
	public:
	DecoderTester(Decoder* decoder)
	: strict_(false),
	decoder_(decoder) {
	image_data_.reset(new uint8[kWidth * kHeight * kBytesPerPixel]);
	EXPECT_TRUE(image_data_.get());
	decoder_->Initialize(SkISize::Make(kWidth, kHeight));
	}

	void Reset() {
	expected_region_.setEmpty();
	update_region_.setEmpty();
	}

	void ReceivedPacket(VideoPacket* packet) {
	Decoder::DecodeResult result = decoder_->DecodePacket(packet);

	ASSERT_NE(Decoder::DECODE_ERROR, result);

	if (result == Decoder::DECODE_DONE) {
	decoder_->RenderFrame(SkISize::Make(kWidth, kHeight),
	SkIRect::MakeXYWH(0, 0, kWidth, kHeight),
	image_data_.get(),
	kWidth * kBytesPerPixel,
	&update_region_);
	}
	}

	void set_strict(bool strict) {
	strict_ = strict;
	}

	void set_capture_data(scoped_refptr<CaptureData> data) {
	capture_data_ = data;
	}

	void AddRects(const SkIRect* rects, int count) {
	SkRegion new_rects;
	new_rects.setRects(rects, count);
	expected_region_.op(new_rects, SkRegion::kUnion_Op);
	}

	void VerifyResults() {
	if (!strict_)
	return;

	ASSERT_TRUE(capture_data_.get());

	// Test the content of the update region.
	EXPECT_EQ(expected_region_, update_region_);
	for (SkRegion::Iterator i(update_region_); !i.done(); i.next()) {
	const int stride = kWidth * kBytesPerPixel;
	EXPECT_EQ(stride, capture_data_->data_planes().strides[0]);
	const int offset = stride * i.rect().top() +
	kBytesPerPixel * i.rect().left();
	const uint8* original = capture_data_->data_planes().data[0] + offset;
	const uint8* decoded = image_data_.get() + offset;
	const int row_size = kBytesPerPixel * i.rect().width();
	for (int y = 0; y < i.rect().height(); ++y) {
	EXPECT_EQ(0, memcmp(original, decoded, row_size))
	<< "Row " << y << " is different";
	original += stride;
	decoded += stride;
	}
	}
	}

	private:
	bool strict_;
	SkRegion expected_region_;
	SkRegion update_region_;
	Decoder* decoder_;
	scoped_array<uint8> image_data_;
	scoped_refptr<CaptureData> capture_data_;

	DISALLOW_COPY_AND_ASSIGN(DecoderTester);
	};

	// The EncoderTester provides a hook for retrieving the data, and passing the
	// message to other subprograms for validaton.
	class EncoderTester {
	public:
	EncoderTester(EncoderMessageTester* message_tester)
	: message_tester_(message_tester),
	decoder_tester_(NULL),
	data_available_(0) {
	}

	~EncoderTester() {
	EXPECT_GT(data_available_, 0);
	}

	void DataAvailable(scoped_ptr<VideoPacket> packet) {
	++data_available_;
	message_tester_->ReceivedPacket(packet.get());

	// Send the message to the DecoderTester.
	if (decoder_tester_) {
	decoder_tester_->ReceivedPacket(packet.get());
	}
	}

	void AddRects(const SkIRect* rects, int count) {
	message_tester_->AddRects(rects, count);
	}

	void set_decoder_tester(DecoderTester* decoder_tester) {
	decoder_tester_ = decoder_tester;
	}

	private:
	EncoderMessageTester* message_tester_;
	DecoderTester* decoder_tester_;
	int data_available_;

	DISALLOW_COPY_AND_ASSIGN(EncoderTester);
	};

	scoped_refptr<CaptureData> PrepareEncodeData(media::VideoFrame::Format format,
	uint8** memory) {
	// TODO(hclam): Support also YUV format.
	CHECK_EQ(format, media::VideoFrame::RGB32);
	int size = kWidth * kHeight * kBytesPerPixel;

	*memory = new uint8[size];
	srand(0);
	for (int i = 0; i < size; ++i) {
	(*memory)[i] = rand() % 256;
	}

	DataPlanes planes;
	memset(planes.data, 0, sizeof(planes.data));
	memset(planes.strides, 0, sizeof(planes.strides));
	planes.data[0] = *memory;
	planes.strides[0] = kWidth * kBytesPerPixel;

	scoped_refptr<CaptureData> data =
	new CaptureData(planes, SkISize::Make(kWidth, kHeight), format);
	return data;
	}

	static void TestEncodingRects(Encoder* encoder,
	EncoderTester* tester,
	scoped_refptr<CaptureData> data,
	const SkIRect* rects, int count) {
	data->mutable_dirty_region().setEmpty();
	for (int i = 0; i < count; ++i) {
	data->mutable_dirty_region().op(rects[i], SkRegion::kUnion_Op);
	}
	tester->AddRects(rects, count);

	encoder->Encode(data, true, base::Bind(
	&EncoderTester::DataAvailable, base::Unretained(tester)));
	}

	void TestEncoder(Encoder* encoder, bool strict) {
	EncoderMessageTester message_tester;
	message_tester.set_strict(strict);

	EncoderTester tester(&message_tester);

	uint8* memory;
	scoped_refptr<CaptureData> data =
	PrepareEncodeData(media::VideoFrame::RGB32, &memory);
	scoped_array<uint8> memory_wrapper(memory);

	TestEncodingRects(encoder, &tester, data, kTestRects, 1);
	TestEncodingRects(encoder, &tester, data, kTestRects + 1, 1);
	TestEncodingRects(encoder, &tester, data, kTestRects + 2, 1);
	TestEncodingRects(encoder, &tester, data, kTestRects + 3, 2);
	}

	static void TestEncodeDecodeRects(Encoder* encoder,
	EncoderTester* encoder_tester,
	DecoderTester* decoder_tester,
	scoped_refptr<CaptureData> data,
	const SkIRect* rects, int count) {
	data->mutable_dirty_region().setRects(rects, count);
	encoder_tester->AddRects(rects, count);
	decoder_tester->AddRects(rects, count);

	// Generate random data for the updated region.
	srand(0);
	for (int i = 0; i < count; ++i) {
	CHECK_EQ(data->pixel_format(), media::VideoFrame::RGB32);
	const int bytes_per_pixel = 4; // Because of RGB32 on previous line.
	const int row_size = bytes_per_pixel * rects[i].width();
	uint8* memory = data->data_planes().data[0] +
	data->data_planes().strides[0] * rects[i].top() +
	bytes_per_pixel * rects[i].left();
	for (int y = 0; y < rects[i].height(); ++y) {
	for (int x = 0; x < row_size; ++x)
	memory[x] = rand() % 256;
	memory += data->data_planes().strides[0];
	}
	}

	encoder->Encode(data, true, base::Bind(&EncoderTester::DataAvailable,
	base::Unretained(encoder_tester)));
	decoder_tester->VerifyResults();
	decoder_tester->Reset();
	}

	void TestEncoderDecoder(Encoder* encoder, Decoder* decoder, bool strict) {
	EncoderMessageTester message_tester;
	message_tester.set_strict(strict);

	EncoderTester encoder_tester(&message_tester);

	uint8* memory;
	scoped_refptr<CaptureData> data =
	PrepareEncodeData(media::VideoFrame::RGB32, &memory);
	scoped_array<uint8> memory_wrapper(memory);

	DecoderTester decoder_tester(decoder);
	decoder_tester.set_strict(strict);
	decoder_tester.set_capture_data(data);
	encoder_tester.set_decoder_tester(&decoder_tester);

	TestEncodeDecodeRects(encoder, &encoder_tester, &decoder_tester, data,
	kTestRects, 1);
	TestEncodeDecodeRects(encoder, &encoder_tester, &decoder_tester, data,
	kTestRects + 1, 1);
	TestEncodeDecodeRects(encoder, &encoder_tester, &decoder_tester, data,
	kTestRects + 2, 1);
	TestEncodeDecodeRects(encoder, &encoder_tester, &decoder_tester, data,
	kTestRects + 3, 2);
	}

	} // namespace remoting