tests/MultiSkpTest.cpp - platform/external/skia - Gitiles

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
  * This test confirms that a multi skp can be serialize and deserailzied without error.
  */

 #include "include/core/SkDocument.h"
 #include "include/core/SkFont.h"
 #include "include/core/SkPicture.h"
 #include "include/core/SkString.h"
 #include "include/core/SkSurface.h"
 #include "include/core/SkTextBlob.h"
 #include "src/core/SkRecord.h"
 #include "src/core/SkRecorder.h"
 #include "src/utils/SkMultiPictureDocument.h"
 #include "tests/Test.h"
 #include "tools/SkSharingProc.h"

 namespace {

 class RecordVisitor {
 // An SkRecord visitor that remembers the name of the last visited command.
 public:
     SkString name;

     explicit RecordVisitor() {}

     template <typename T>
     void operator()(const T& command) {
         name = SkString(NameOf(command));
     }

     SkString lastCommandName() {
         return name;
     }
 private:
     template <typename T>
     static const char* NameOf(const T&) {
         #define CASE(U) case SkRecords::U##_Type: return #U;
         switch (T::kType) { SK_RECORD_TYPES(CASE) }
         #undef CASE
         return "Unknown T";
     }
 };
 } // namespace

 // Compare record tested with record expected. Assert op sequence is the same (comparing types)
 // frame_num is only used for error message.
 static void compareRecords(const SkRecord& tested, const SkRecord& expected,
     int frame_num, skiatest::Reporter* reporter) {
     REPORTER_ASSERT(reporter, tested.count() == expected.count(),
         "Found %d commands in frame %d, expected %d", tested.count(), frame_num, expected.count());

     RecordVisitor rv;
     for (int i = 0; i < tested.count(); i++) {
         tested.visit(i, rv);
         const SkString testCommandName = rv.lastCommandName();
         expected.visit(i, rv);
         const SkString expectedCommandName = rv.lastCommandName();
         REPORTER_ASSERT(reporter, testCommandName == expectedCommandName,
             "Unexpected command type '%s' in frame %d, op %d. Expected '%s'",
             testCommandName.c_str(), frame_num, i, expectedCommandName.c_str());
     }
 }

 static void draw_something(SkCanvas* canvas, int seed, sk_sp<SkImage> image) {
     canvas->drawColor(SK_ColorWHITE);

     SkPaint paint;
     paint.setStyle(SkPaint::kStroke_Style);
     paint.setStrokeWidth(seed);
     paint.setColor(SK_ColorRED);

     SkRect rect = SkRect::MakeXYWH(50+seed, 50+seed, 4*seed, 60);
     canvas->drawRect(rect, paint);

     SkRRect oval;
     oval.setOval(rect);
     oval.offset(40, 60+seed);
     paint.setColor(SK_ColorBLUE);
     canvas->drawRRect(oval, paint);

     paint.setColor(SK_ColorCYAN);
     canvas->drawCircle(180, 50, 5*seed, paint);

     rect.offset(80, 0);
     paint.setColor(SK_ColorYELLOW);
     canvas->drawRoundRect(rect, 10, 10, paint);

     SkPath path;
     path.cubicTo(768, 0, -512, 256, 256, 256);
     paint.setColor(SK_ColorGREEN);
     canvas->drawPath(path, paint);

     canvas->drawImage(image, 128-seed, 128, &paint);

     if (seed % 2 == 0) {
         SkRect rect2 = SkRect::MakeXYWH(0, 0, 40, 60);
         canvas->drawImageRect(image, rect2, &paint);
     }

     SkPaint paint2;
     auto text = SkTextBlob::MakeFromString(
         SkStringPrintf("Frame %d", seed).c_str(), SkFont(nullptr, 2+seed));
     canvas->drawTextBlob(text.get(), 50, 25, paint2);
 }

 // Test serialization and deserialization of multi skp.
 DEF_TEST(Serialize_and_deserialize_multi_skp, reporter) {
     // Create the stream we will serialize into.
     SkDynamicMemoryWStream stream;

     // Create the image sharing proc.
     SkSharingSerialContext ctx;
     SkSerialProcs procs;
     procs.fImageProc = SkSharingSerialContext::serializeImage;
     procs.fImageCtx = &ctx;

     // Create the mulit picture document used for recording frames.
     sk_sp<SkDocument> multipic = SkMakeMultiPictureDocument(&stream, &procs);

     static const int NUM_FRAMES = 12;
     static const int WIDTH = 256;
     static const int HEIGHT = 256;

     // Make an image to be used in a later step.
     auto surface(SkSurface::MakeRasterN32Premul(100, 100));
     surface->getCanvas()->clear(SK_ColorGREEN);
     sk_sp<SkImage> image(surface->makeImageSnapshot());
     REPORTER_ASSERT(reporter, image);

     // Create frames, recording them to multipic.
     SkRecord expectedRecords[NUM_FRAMES];
     for (int i=0; i<NUM_FRAMES; i++) {
         SkCanvas* pictureCanvas = multipic->beginPage(WIDTH, HEIGHT);
         draw_something(pictureCanvas, i, image);
         multipic->endPage();
         // Also record the same commands to separate SkRecords for later comparison
         SkRecorder canvas(&expectedRecords[i], WIDTH, HEIGHT);
         draw_something(&canvas, i, image);
     }
     // Finalize
     multipic->close();

     // Confirm written data is at least as large as the magic word
     std::unique_ptr<SkStreamAsset> writtenStream = stream.detachAsStream();
     REPORTER_ASSERT(reporter, writtenStream->getLength() > 24,
         "Written data length too short (%d)", writtenStream->getLength());
     SkDebugf("Multi Frame file size = %d\n", writtenStream->getLength());

     // Set up deserialization
     SkSharingDeserialContext deserialContext;
     SkDeserialProcs dprocs;
     dprocs.fImageProc = SkSharingDeserialContext::deserializeImage;
     dprocs.fImageCtx = &deserialContext;

     // Confirm data is a MultiPictureDocument
     int frame_count = SkMultiPictureDocumentReadPageCount(writtenStream.get());
     REPORTER_ASSERT(reporter, frame_count == NUM_FRAMES,
         "Expected %d frames, got %d. \n 0 frames may indicate the written file was not a "
         "MultiPictureDocument.", NUM_FRAMES, frame_count);

     // Deserailize
     std::vector<SkDocumentPage> frames(frame_count);
     REPORTER_ASSERT(reporter,
         SkMultiPictureDocumentRead(writtenStream.get(), frames.data(), frame_count, &dprocs),
         "Failed while reading MultiPictureDocument");

     // Examine each frame.
     SkRecorder resultRecorder(nullptr, 1, 1);
     int i=0;
     for (const auto& frame : frames) {
         SkRect bounds = frame.fPicture->cullRect();
         REPORTER_ASSERT(reporter, bounds.width() == WIDTH,
             "Page width: expected (%d) got (%d)", WIDTH, bounds.width());
         REPORTER_ASSERT(reporter, bounds.height() == HEIGHT,
             "Page height: expected (%d) got (%d)", HEIGHT, bounds.height());
         // confirm contents of picture match what we drew.
         // There are several ways of doing this, an ideal comparison would not break in the same
         // way at the same time as the code under test (no serialization), and would involve only
         // minimal transformation of frame.fPicture, minimizing the chance that a detected fault lies
         // in the test itself. The comparions also would not be an overly sensitive change detector,
         // so that it doesn't break every time someone submits code (no golden file)

         // Extract the SkRecord from the deserialized picture using playback (instead of a mess of
         // friend classes to grab the private record inside frame.fPicture
         SkRecord record;
         // This picture mode is necessary so that we record the command contents of frame.fPicture
         // not just a 'DrawPicture' command.
         resultRecorder.reset(&record, bounds, SkRecorder::Playback_DrawPictureMode, nullptr);
         frame.fPicture->playback(&resultRecorder);
         // Compare the record to the expected one
         compareRecords(record, expectedRecords[i], i, reporter);
         i++;
     }
 }
	/*
	* Copyright 2013 Google Inc.
	*
	* Use of this source code is governed by a BSD-style license that can be
	* found in the LICENSE file.
	*
	* This test confirms that a multi skp can be serialize and deserailzied without error.
	*/

	#include "include/core/SkDocument.h"
	#include "include/core/SkFont.h"
	#include "include/core/SkPicture.h"
	#include "include/core/SkString.h"
	#include "include/core/SkSurface.h"
	#include "include/core/SkTextBlob.h"
	#include "src/core/SkRecord.h"
	#include "src/core/SkRecorder.h"
	#include "src/utils/SkMultiPictureDocument.h"
	#include "tests/Test.h"
	#include "tools/SkSharingProc.h"

	namespace {

	class RecordVisitor {
	// An SkRecord visitor that remembers the name of the last visited command.
	public:
	SkString name;

	explicit RecordVisitor() {}

	template <typename T>
	void operator()(const T& command) {
	name = SkString(NameOf(command));
	}

	SkString lastCommandName() {
	return name;
	}
	private:
	template <typename T>
	static const char* NameOf(const T&) {
	#define CASE(U) case SkRecords::U##_Type: return #U;
	switch (T::kType) { SK_RECORD_TYPES(CASE) }
	#undef CASE
	return "Unknown T";
	}
	};
	} // namespace

	// Compare record tested with record expected. Assert op sequence is the same (comparing types)
	// frame_num is only used for error message.
	static void compareRecords(const SkRecord& tested, const SkRecord& expected,
	int frame_num, skiatest::Reporter* reporter) {
	REPORTER_ASSERT(reporter, tested.count() == expected.count(),
	"Found %d commands in frame %d, expected %d", tested.count(), frame_num, expected.count());

	RecordVisitor rv;
	for (int i = 0; i < tested.count(); i++) {
	tested.visit(i, rv);
	const SkString testCommandName = rv.lastCommandName();
	expected.visit(i, rv);
	const SkString expectedCommandName = rv.lastCommandName();
	REPORTER_ASSERT(reporter, testCommandName == expectedCommandName,
	"Unexpected command type '%s' in frame %d, op %d. Expected '%s'",
	testCommandName.c_str(), frame_num, i, expectedCommandName.c_str());
	}
	}

	static void draw_something(SkCanvas* canvas, int seed, sk_sp<SkImage> image) {
	canvas->drawColor(SK_ColorWHITE);

	SkPaint paint;
	paint.setStyle(SkPaint::kStroke_Style);
	paint.setStrokeWidth(seed);
	paint.setColor(SK_ColorRED);

	SkRect rect = SkRect::MakeXYWH(50+seed, 50+seed, 4*seed, 60);
	canvas->drawRect(rect, paint);

	SkRRect oval;
	oval.setOval(rect);
	oval.offset(40, 60+seed);
	paint.setColor(SK_ColorBLUE);
	canvas->drawRRect(oval, paint);

	paint.setColor(SK_ColorCYAN);
	canvas->drawCircle(180, 50, 5*seed, paint);

	rect.offset(80, 0);
	paint.setColor(SK_ColorYELLOW);
	canvas->drawRoundRect(rect, 10, 10, paint);

	SkPath path;
	path.cubicTo(768, 0, -512, 256, 256, 256);
	paint.setColor(SK_ColorGREEN);
	canvas->drawPath(path, paint);

	canvas->drawImage(image, 128-seed, 128, &paint);

	if (seed % 2 == 0) {
	SkRect rect2 = SkRect::MakeXYWH(0, 0, 40, 60);
	canvas->drawImageRect(image, rect2, &paint);
	}

	SkPaint paint2;
	auto text = SkTextBlob::MakeFromString(
	SkStringPrintf("Frame %d", seed).c_str(), SkFont(nullptr, 2+seed));
	canvas->drawTextBlob(text.get(), 50, 25, paint2);
	}

	// Test serialization and deserialization of multi skp.
	DEF_TEST(Serialize_and_deserialize_multi_skp, reporter) {
	// Create the stream we will serialize into.
	SkDynamicMemoryWStream stream;

	// Create the image sharing proc.
	SkSharingSerialContext ctx;
	SkSerialProcs procs;
	procs.fImageProc = SkSharingSerialContext::serializeImage;
	procs.fImageCtx = &ctx;

	// Create the mulit picture document used for recording frames.
	sk_sp<SkDocument> multipic = SkMakeMultiPictureDocument(&stream, &procs);

	static const int NUM_FRAMES = 12;
	static const int WIDTH = 256;
	static const int HEIGHT = 256;

	// Make an image to be used in a later step.
	auto surface(SkSurface::MakeRasterN32Premul(100, 100));
	surface->getCanvas()->clear(SK_ColorGREEN);
	sk_sp<SkImage> image(surface->makeImageSnapshot());
	REPORTER_ASSERT(reporter, image);

	// Create frames, recording them to multipic.
	SkRecord expectedRecords[NUM_FRAMES];
	for (int i=0; i<NUM_FRAMES; i++) {
	SkCanvas* pictureCanvas = multipic->beginPage(WIDTH, HEIGHT);
	draw_something(pictureCanvas, i, image);
	multipic->endPage();
	// Also record the same commands to separate SkRecords for later comparison
	SkRecorder canvas(&expectedRecords[i], WIDTH, HEIGHT);
	draw_something(&canvas, i, image);
	}
	// Finalize
	multipic->close();

	// Confirm written data is at least as large as the magic word
	std::unique_ptr<SkStreamAsset> writtenStream = stream.detachAsStream();
	REPORTER_ASSERT(reporter, writtenStream->getLength() > 24,
	"Written data length too short (%d)", writtenStream->getLength());
	SkDebugf("Multi Frame file size = %d\n", writtenStream->getLength());

	// Set up deserialization
	SkSharingDeserialContext deserialContext;
	SkDeserialProcs dprocs;
	dprocs.fImageProc = SkSharingDeserialContext::deserializeImage;
	dprocs.fImageCtx = &deserialContext;

	// Confirm data is a MultiPictureDocument
	int frame_count = SkMultiPictureDocumentReadPageCount(writtenStream.get());
	REPORTER_ASSERT(reporter, frame_count == NUM_FRAMES,
	"Expected %d frames, got %d. \n 0 frames may indicate the written file was not a "
	"MultiPictureDocument.", NUM_FRAMES, frame_count);

	// Deserailize
	std::vector<SkDocumentPage> frames(frame_count);
	REPORTER_ASSERT(reporter,
	SkMultiPictureDocumentRead(writtenStream.get(), frames.data(), frame_count, &dprocs),
	"Failed while reading MultiPictureDocument");

	// Examine each frame.
	SkRecorder resultRecorder(nullptr, 1, 1);
	int i=0;
	for (const auto& frame : frames) {
	SkRect bounds = frame.fPicture->cullRect();
	REPORTER_ASSERT(reporter, bounds.width() == WIDTH,
	"Page width: expected (%d) got (%d)", WIDTH, bounds.width());
	REPORTER_ASSERT(reporter, bounds.height() == HEIGHT,
	"Page height: expected (%d) got (%d)", HEIGHT, bounds.height());
	// confirm contents of picture match what we drew.
	// There are several ways of doing this, an ideal comparison would not break in the same
	// way at the same time as the code under test (no serialization), and would involve only
	// minimal transformation of frame.fPicture, minimizing the chance that a detected fault lies
	// in the test itself. The comparions also would not be an overly sensitive change detector,
	// so that it doesn't break every time someone submits code (no golden file)

	// Extract the SkRecord from the deserialized picture using playback (instead of a mess of
	// friend classes to grab the private record inside frame.fPicture
	SkRecord record;
	// This picture mode is necessary so that we record the command contents of frame.fPicture
	// not just a 'DrawPicture' command.
	resultRecorder.reset(&record, bounds, SkRecorder::Playback_DrawPictureMode, nullptr);
	frame.fPicture->playback(&resultRecorder);
	// Compare the record to the expected one
	compareRecords(record, expectedRecords[i], i, reporter);
	i++;
	}
	}