tools/fiddle/fiddle_main.cpp - platform/external/skia - Gitiles

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */

 #include <cstdio>
 #include <cstdlib>
 #include <sstream>
 #include <string>

 #include "SkAutoPixmapStorage.h"
 #include "SkCommandLineFlags.h"
 #include "SkMipMap.h"
 #include "SkUtils.h"

 #include "fiddle_main.h"

 DEFINE_double(duration, 1.0, "The total duration, in seconds, of the animation we are drawing.");
 DEFINE_double(frame, 1.0, "A double value in [0, 1] that specifies the point in animation to draw.");

 #include "GrBackendSurface.h"
 #include "GrContextPriv.h"
 #include "GrGpu.h"

 #include "GrTest.h"


 // Globals externed in fiddle_main.h
 sk_sp<GrTexture>      backingTexture;  // not externed
 GrBackendTexture      backEndTexture;

 sk_sp<GrRenderTarget> backingRenderTarget; // not externed
 GrBackendRenderTarget backEndRenderTarget;

 sk_sp<GrTexture>      backingTextureRenderTarget;  // not externed
 GrBackendTexture      backEndTextureRenderTarget;

 SkBitmap source;
 sk_sp<SkImage> image;
 double duration; // The total duration of the animation in seconds.
 double frame;    // A value in [0, 1] of where we are in the animation.

 // Global used by the local impl of SkDebugf.
 std::ostringstream gTextOutput;

 // Global to record the GL driver info via create_grcontext().
 std::ostringstream gGLDriverInfo;

 void SkDebugf(const char * fmt, ...) {
     va_list args;
     va_start(args, fmt);
     char formatbuffer[1024];
     int n = vsnprintf(formatbuffer, sizeof(formatbuffer), fmt, args);
     va_end(args);
     if (n>=0 && n<=int(sizeof(formatbuffer))) {
         gTextOutput.write(formatbuffer, n);
     }
 }

 static void encode_to_base64(const void* data, size_t size, FILE* out) {
     const uint8_t* input = reinterpret_cast<const uint8_t*>(data);
     const uint8_t* end = &input[size];
     static const char codes[] =
             "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
             "abcdefghijklmnopqrstuvwxyz0123456789+/";
     while (input != end) {
         uint8_t b = (*input & 0xFC) >> 2;
         fputc(codes[b], out);
         b = (*input & 0x03) << 4;
         ++input;
         if (input == end) {
             fputc(codes[b], out);
             fputs("==", out);
             return;
         }
         b |= (*input & 0xF0) >> 4;
         fputc(codes[b], out);
         b = (*input & 0x0F) << 2;
         ++input;
         if (input == end) {
             fputc(codes[b], out);
             fputc('=', out);
             return;
         }
         b |= (*input & 0xC0) >> 6;
         fputc(codes[b], out);
         b = *input & 0x3F;
         fputc(codes[b], out);
         ++input;
     }
 }


 static void dump_output(const void* data, size_t size,
                         const char* name, bool last = true) {
     printf("\t\"%s\": \"", name);
     encode_to_base64(data, size, stdout);
     fputs(last ? "\"\n" : "\",\n", stdout);
 }

 static void dump_output(const sk_sp<SkData>& data,
                         const char* name, bool last = true) {
     if (data) {
         dump_output(data->data(), data->size(), name, last);
     }
 }

 static sk_sp<SkData> encode_snapshot(const sk_sp<SkSurface>& surface) {
     sk_sp<SkImage> img(surface->makeImageSnapshot());
     return img ? img->encodeToData() : nullptr;
 }

 static SkCanvas* prepare_canvas(SkCanvas * canvas) {
     canvas->clear(SK_ColorWHITE);
     return canvas;
 }

 static bool setup_backend_objects(GrContext* context,
                                   const SkBitmap& bm,
                                   const DrawOptions& options) {
     if (!context) {
         return false;
     }

     auto resourceProvider = context->contextPriv().resourceProvider();

     GrSurfaceDesc backingDesc;
     backingDesc.fFlags = kNone_GrSurfaceFlags;
     backingDesc.fOrigin = kTopLeft_GrSurfaceOrigin;
     backingDesc.fWidth = bm.width();
     backingDesc.fHeight = bm.height();
     // This config must match the SkColorType used in draw.cpp in the SkImage and Surface factories
     backingDesc.fConfig = kRGBA_8888_GrPixelConfig;
     backingDesc.fSampleCnt = 0;

     if (!bm.empty()) {
         SkPixmap originalPixmap;
         SkPixmap* pixmap = &originalPixmap;
         if (!bm.peekPixels(&originalPixmap)) {
             return false;
         }

         SkAutoPixmapStorage rgbaPixmap;
         if (kN32_SkColorType != kRGBA_8888_SkColorType) {
             if (!rgbaPixmap.tryAlloc(bm.info().makeColorType(kRGBA_8888_SkColorType))) {
                 return false;
             }
             if (!bm.readPixels(rgbaPixmap)) {
                 return false;
             }
             pixmap = &rgbaPixmap;
         }
         int mipLevelCount = GrMipMapped::kYes == options.fMipMapping
                                     ? SkMipMap::ComputeLevelCount(bm.width(), bm.height())
                                     : 1;
         std::unique_ptr<GrMipLevel[]> texels(new GrMipLevel[mipLevelCount]);

         texels[0].fPixels = pixmap->addr();
         texels[0].fRowBytes = pixmap->rowBytes();

         for (int i = 1; i < mipLevelCount; i++) {
             texels[i].fPixels = nullptr;
             texels[i].fRowBytes = 0;
         }

         backingTexture = resourceProvider->createTexture(backingDesc, SkBudgeted::kNo,
                                                          texels.get(), mipLevelCount,
                                                          SkDestinationSurfaceColorMode::kLegacy);
         if (!backingTexture) {
             return false;
         }

         backEndTexture = backingTexture->getBackendTexture();
         if (!backEndTexture.isValid()) {
             return false;
         }
     }

     backingDesc.fFlags = kRenderTarget_GrSurfaceFlag;
     backingDesc.fWidth = options.fOffScreenWidth;
     backingDesc.fHeight = options.fOffScreenHeight;
     backingDesc.fSampleCnt = options.fOffScreenSampleCount;

     SkAutoTMalloc<uint32_t> data(backingDesc.fWidth * backingDesc.fHeight);
     sk_memset32(data.get(), 0, backingDesc.fWidth * backingDesc.fHeight);


     {
         // This backend object should be renderable but not textureable. Given the limitations
         // of how we're creating it though it will wind up being secretly textureable.
         // We use this fact to initialize it with data but don't allow mipmaps
         GrMipLevel level0 = { data.get(), backingDesc.fWidth*sizeof(uint32_t) };

         sk_sp<GrTexture> tmp = resourceProvider->createTexture(
                                                             backingDesc, SkBudgeted::kNo,
                                                             &level0, 1,
                                                             SkDestinationSurfaceColorMode::kLegacy);
         if (!tmp || !tmp->asRenderTarget()) {
             return false;
         }

         backingRenderTarget = sk_ref_sp(tmp->asRenderTarget());

         backEndRenderTarget = backingRenderTarget->getBackendRenderTarget();
         if (!backEndRenderTarget.isValid()) {
             return false;
         }
     }

     {
         int mipLevelCount = GrMipMapped::kYes == options.fOffScreenMipMapping
                             ? SkMipMap::ComputeLevelCount(backingDesc.fWidth, backingDesc.fHeight)
                             : 1;
         std::unique_ptr<GrMipLevel[]> texels(new GrMipLevel[mipLevelCount]);

         texels[0].fPixels = data.get();
         texels[0].fRowBytes = backingDesc.fWidth*sizeof(uint32_t);

         for (int i = 1; i < mipLevelCount; i++) {
             texels[i].fPixels = nullptr;
             texels[i].fRowBytes = 0;
         }

         backingTextureRenderTarget = resourceProvider->createTexture(
                                                             backingDesc, SkBudgeted::kNo,
                                                             texels.get(), mipLevelCount,
                                                             SkDestinationSurfaceColorMode::kLegacy);
         if (!backingTextureRenderTarget || !backingTextureRenderTarget->asRenderTarget()) {
             return false;
         }

         backEndTextureRenderTarget = backingTextureRenderTarget->getBackendTexture();
         if (!backEndTextureRenderTarget.isValid()) {
             return false;
         }
     }


     return true;
 }

 int main(int argc, char** argv) {
     SkCommandLineFlags::Parse(argc, argv);
     duration = FLAGS_duration;
     frame = FLAGS_frame;
     DrawOptions options = GetDrawOptions();
     // If textOnly then only do one type of image, otherwise the text
     // output is duplicated for each type.
     if (options.textOnly) {
         options.raster = true;
         options.gpu = false;
         options.pdf = false;
         options.skp = false;
     }
     if (options.source) {
         sk_sp<SkData> data(SkData::MakeFromFileName(options.source));
         if (!data) {
             perror(options.source);
             return 1;
         } else {
             image = SkImage::MakeFromEncoded(std::move(data));
             if (!image) {
                 perror("Unable to decode the source image.");
                 return 1;
             }
             SkAssertResult(image->asLegacyBitmap(&source, SkImage::kRO_LegacyBitmapMode));
         }
     }
     sk_sp<SkData> rasterData, gpuData, pdfData, skpData;
     SkColorType colorType = kN32_SkColorType;
     sk_sp<SkColorSpace> colorSpace = nullptr;
     if (options.f16) {
         SkASSERT(options.srgb);
         colorType = kRGBA_F16_SkColorType;
         colorSpace = SkColorSpace::MakeSRGBLinear();
     } else if (options.srgb) {
         colorSpace = SkColorSpace::MakeSRGB();
     }
     SkImageInfo info = SkImageInfo::Make(options.size.width(), options.size.height(), colorType,
                                          kPremul_SkAlphaType, colorSpace);
     if (options.raster) {
         auto rasterSurface = SkSurface::MakeRaster(info);
         srand(0);
         draw(prepare_canvas(rasterSurface->getCanvas()));
         rasterData = encode_snapshot(rasterSurface);
     }
     if (options.gpu) {
         sk_sp<GrContext> grContext = create_grcontext(gGLDriverInfo);
         if (!grContext) {
             fputs("Unable to get GrContext.\n", stderr);
         } else {
             if (!setup_backend_objects(grContext.get(), source, options)) {
                 fputs("Unable to create backend objects.\n", stderr);
                 exit(1);
             }

             auto surface = SkSurface::MakeRenderTarget(grContext.get(), SkBudgeted::kNo, info);
             if (!surface) {
                 fputs("Unable to get render surface.\n", stderr);
                 exit(1);
             }
             srand(0);
             draw(prepare_canvas(surface->getCanvas()));
             gpuData = encode_snapshot(surface);
         }
     }
     if (options.pdf) {
         SkDynamicMemoryWStream pdfStream;
         sk_sp<SkDocument> document(SkDocument::MakePDF(&pdfStream));
         if (document) {
             srand(0);
             draw(prepare_canvas(document->beginPage(options.size.width(), options.size.height())));
             document->close();
             pdfData = pdfStream.detachAsData();
         }
     }
     if (options.skp) {
         SkSize size;
         size = options.size;
         SkPictureRecorder recorder;
         srand(0);
         draw(prepare_canvas(recorder.beginRecording(size.width(), size.height())));
         auto picture = recorder.finishRecordingAsPicture();
         SkDynamicMemoryWStream skpStream;
         picture->serialize(&skpStream);
         skpData = skpStream.detachAsData();
     }

     printf("{\n");
     if (!options.textOnly) {
         dump_output(rasterData, "Raster", false);
         dump_output(gpuData, "Gpu", false);
         dump_output(pdfData, "Pdf", false);
         dump_output(skpData, "Skp", false);
     } else {
         std::string textoutput = gTextOutput.str();
         dump_output(textoutput.c_str(), textoutput.length(), "Text", false);
     }
     std::string glinfo = gGLDriverInfo.str();
     dump_output(glinfo.c_str(), glinfo.length(), "GLInfo", true);
     printf("}\n");

     return 0;
 }
	/*
	* Copyright 2015 Google Inc.
	*
	* Use of this source code is governed by a BSD-style license that can be
	* found in the LICENSE file.
	*/

	#include <cstdio>
	#include <cstdlib>
	#include <sstream>
	#include <string>

	#include "SkAutoPixmapStorage.h"
	#include "SkCommandLineFlags.h"
	#include "SkMipMap.h"
	#include "SkUtils.h"

	#include "fiddle_main.h"

	DEFINE_double(duration, 1.0, "The total duration, in seconds, of the animation we are drawing.");
	DEFINE_double(frame, 1.0, "A double value in [0, 1] that specifies the point in animation to draw.");

	#include "GrBackendSurface.h"
	#include "GrContextPriv.h"
	#include "GrGpu.h"

	#include "GrTest.h"


	// Globals externed in fiddle_main.h
	sk_sp<GrTexture> backingTexture; // not externed
	GrBackendTexture backEndTexture;

	sk_sp<GrRenderTarget> backingRenderTarget; // not externed
	GrBackendRenderTarget backEndRenderTarget;

	sk_sp<GrTexture> backingTextureRenderTarget; // not externed
	GrBackendTexture backEndTextureRenderTarget;

	SkBitmap source;
	sk_sp<SkImage> image;
	double duration; // The total duration of the animation in seconds.
	double frame; // A value in [0, 1] of where we are in the animation.

	// Global used by the local impl of SkDebugf.
	std::ostringstream gTextOutput;

	// Global to record the GL driver info via create_grcontext().
	std::ostringstream gGLDriverInfo;

	void SkDebugf(const char * fmt, ...) {
	va_list args;
	va_start(args, fmt);
	char formatbuffer[1024];
	int n = vsnprintf(formatbuffer, sizeof(formatbuffer), fmt, args);
	va_end(args);
	if (n>=0 && n<=int(sizeof(formatbuffer))) {
	gTextOutput.write(formatbuffer, n);
	}
	}

	static void encode_to_base64(const void* data, size_t size, FILE* out) {
	const uint8_t* input = reinterpret_cast<const uint8_t*>(data);
	const uint8_t* end = &input[size];
	static const char codes[] =
	"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
	"abcdefghijklmnopqrstuvwxyz0123456789+/";
	while (input != end) {
	uint8_t b = (*input & 0xFC) >> 2;
	fputc(codes[b], out);
	b = (*input & 0x03) << 4;
	++input;
	if (input == end) {
	fputc(codes[b], out);
	fputs("==", out);
	return;
	}
	b \|= (*input & 0xF0) >> 4;
	fputc(codes[b], out);
	b = (*input & 0x0F) << 2;
	++input;
	if (input == end) {
	fputc(codes[b], out);
	fputc('=', out);
	return;
	}
	b \|= (*input & 0xC0) >> 6;
	fputc(codes[b], out);
	b = *input & 0x3F;
	fputc(codes[b], out);
	++input;
	}
	}


	static void dump_output(const void* data, size_t size,
	const char* name, bool last = true) {
	printf("\t\"%s\": \"", name);
	encode_to_base64(data, size, stdout);
	fputs(last ? "\"\n" : "\",\n", stdout);
	}

	static void dump_output(const sk_sp<SkData>& data,
	const char* name, bool last = true) {
	if (data) {
	dump_output(data->data(), data->size(), name, last);
	}
	}

	static sk_sp<SkData> encode_snapshot(const sk_sp<SkSurface>& surface) {
	sk_sp<SkImage> img(surface->makeImageSnapshot());
	return img ? img->encodeToData() : nullptr;
	}

	static SkCanvas* prepare_canvas(SkCanvas * canvas) {
	canvas->clear(SK_ColorWHITE);
	return canvas;
	}

	static bool setup_backend_objects(GrContext* context,
	const SkBitmap& bm,
	const DrawOptions& options) {
	if (!context) {
	return false;
	}

	auto resourceProvider = context->contextPriv().resourceProvider();

	GrSurfaceDesc backingDesc;
	backingDesc.fFlags = kNone_GrSurfaceFlags;
	backingDesc.fOrigin = kTopLeft_GrSurfaceOrigin;
	backingDesc.fWidth = bm.width();
	backingDesc.fHeight = bm.height();
	// This config must match the SkColorType used in draw.cpp in the SkImage and Surface factories
	backingDesc.fConfig = kRGBA_8888_GrPixelConfig;
	backingDesc.fSampleCnt = 0;

	if (!bm.empty()) {
	SkPixmap originalPixmap;
	SkPixmap* pixmap = &originalPixmap;
	if (!bm.peekPixels(&originalPixmap)) {
	return false;
	}

	SkAutoPixmapStorage rgbaPixmap;
	if (kN32_SkColorType != kRGBA_8888_SkColorType) {
	if (!rgbaPixmap.tryAlloc(bm.info().makeColorType(kRGBA_8888_SkColorType))) {
	return false;
	}
	if (!bm.readPixels(rgbaPixmap)) {
	return false;
	}
	pixmap = &rgbaPixmap;
	}
	int mipLevelCount = GrMipMapped::kYes == options.fMipMapping
	? SkMipMap::ComputeLevelCount(bm.width(), bm.height())
	: 1;
	std::unique_ptr<GrMipLevel[]> texels(new GrMipLevel[mipLevelCount]);

	texels[0].fPixels = pixmap->addr();
	texels[0].fRowBytes = pixmap->rowBytes();

	for (int i = 1; i < mipLevelCount; i++) {
	texels[i].fPixels = nullptr;
	texels[i].fRowBytes = 0;
	}

	backingTexture = resourceProvider->createTexture(backingDesc, SkBudgeted::kNo,
	texels.get(), mipLevelCount,
	SkDestinationSurfaceColorMode::kLegacy);
	if (!backingTexture) {
	return false;
	}

	backEndTexture = backingTexture->getBackendTexture();
	if (!backEndTexture.isValid()) {
	return false;
	}
	}

	backingDesc.fFlags = kRenderTarget_GrSurfaceFlag;
	backingDesc.fWidth = options.fOffScreenWidth;
	backingDesc.fHeight = options.fOffScreenHeight;
	backingDesc.fSampleCnt = options.fOffScreenSampleCount;

	SkAutoTMalloc<uint32_t> data(backingDesc.fWidth * backingDesc.fHeight);
	sk_memset32(data.get(), 0, backingDesc.fWidth * backingDesc.fHeight);


	{
	// This backend object should be renderable but not textureable. Given the limitations
	// of how we're creating it though it will wind up being secretly textureable.
	// We use this fact to initialize it with data but don't allow mipmaps
	GrMipLevel level0 = { data.get(), backingDesc.fWidth*sizeof(uint32_t) };

	sk_sp<GrTexture> tmp = resourceProvider->createTexture(
	backingDesc, SkBudgeted::kNo,
	&level0, 1,
	SkDestinationSurfaceColorMode::kLegacy);
	if (!tmp \|\| !tmp->asRenderTarget()) {
	return false;
	}

	backingRenderTarget = sk_ref_sp(tmp->asRenderTarget());

	backEndRenderTarget = backingRenderTarget->getBackendRenderTarget();
	if (!backEndRenderTarget.isValid()) {
	return false;
	}
	}

	{
	int mipLevelCount = GrMipMapped::kYes == options.fOffScreenMipMapping
	? SkMipMap::ComputeLevelCount(backingDesc.fWidth, backingDesc.fHeight)
	: 1;
	std::unique_ptr<GrMipLevel[]> texels(new GrMipLevel[mipLevelCount]);

	texels[0].fPixels = data.get();
	texels[0].fRowBytes = backingDesc.fWidth*sizeof(uint32_t);

	for (int i = 1; i < mipLevelCount; i++) {
	texels[i].fPixels = nullptr;
	texels[i].fRowBytes = 0;
	}

	backingTextureRenderTarget = resourceProvider->createTexture(
	backingDesc, SkBudgeted::kNo,
	texels.get(), mipLevelCount,
	SkDestinationSurfaceColorMode::kLegacy);
	if (!backingTextureRenderTarget \|\| !backingTextureRenderTarget->asRenderTarget()) {
	return false;
	}

	backEndTextureRenderTarget = backingTextureRenderTarget->getBackendTexture();
	if (!backEndTextureRenderTarget.isValid()) {
	return false;
	}
	}


	return true;
	}

	int main(int argc, char** argv) {
	SkCommandLineFlags::Parse(argc, argv);
	duration = FLAGS_duration;
	frame = FLAGS_frame;
	DrawOptions options = GetDrawOptions();
	// If textOnly then only do one type of image, otherwise the text
	// output is duplicated for each type.
	if (options.textOnly) {
	options.raster = true;
	options.gpu = false;
	options.pdf = false;
	options.skp = false;
	}
	if (options.source) {
	sk_sp<SkData> data(SkData::MakeFromFileName(options.source));
	if (!data) {
	perror(options.source);
	return 1;
	} else {
	image = SkImage::MakeFromEncoded(std::move(data));
	if (!image) {
	perror("Unable to decode the source image.");
	return 1;
	}
	SkAssertResult(image->asLegacyBitmap(&source, SkImage::kRO_LegacyBitmapMode));
	}
	}
	sk_sp<SkData> rasterData, gpuData, pdfData, skpData;
	SkColorType colorType = kN32_SkColorType;
	sk_sp<SkColorSpace> colorSpace = nullptr;
	if (options.f16) {
	SkASSERT(options.srgb);
	colorType = kRGBA_F16_SkColorType;
	colorSpace = SkColorSpace::MakeSRGBLinear();
	} else if (options.srgb) {
	colorSpace = SkColorSpace::MakeSRGB();
	}
	SkImageInfo info = SkImageInfo::Make(options.size.width(), options.size.height(), colorType,
	kPremul_SkAlphaType, colorSpace);
	if (options.raster) {
	auto rasterSurface = SkSurface::MakeRaster(info);
	srand(0);
	draw(prepare_canvas(rasterSurface->getCanvas()));
	rasterData = encode_snapshot(rasterSurface);
	}
	if (options.gpu) {
	sk_sp<GrContext> grContext = create_grcontext(gGLDriverInfo);
	if (!grContext) {
	fputs("Unable to get GrContext.\n", stderr);
	} else {
	if (!setup_backend_objects(grContext.get(), source, options)) {
	fputs("Unable to create backend objects.\n", stderr);
	exit(1);
	}

	auto surface = SkSurface::MakeRenderTarget(grContext.get(), SkBudgeted::kNo, info);
	if (!surface) {
	fputs("Unable to get render surface.\n", stderr);
	exit(1);
	}
	srand(0);
	draw(prepare_canvas(surface->getCanvas()));
	gpuData = encode_snapshot(surface);
	}
	}
	if (options.pdf) {
	SkDynamicMemoryWStream pdfStream;
	sk_sp<SkDocument> document(SkDocument::MakePDF(&pdfStream));
	if (document) {
	srand(0);
	draw(prepare_canvas(document->beginPage(options.size.width(), options.size.height())));
	document->close();
	pdfData = pdfStream.detachAsData();
	}
	}
	if (options.skp) {
	SkSize size;
	size = options.size;
	SkPictureRecorder recorder;
	srand(0);
	draw(prepare_canvas(recorder.beginRecording(size.width(), size.height())));
	auto picture = recorder.finishRecordingAsPicture();
	SkDynamicMemoryWStream skpStream;
	picture->serialize(&skpStream);
	skpData = skpStream.detachAsData();
	}

	printf("{\n");
	if (!options.textOnly) {
	dump_output(rasterData, "Raster", false);
	dump_output(gpuData, "Gpu", false);
	dump_output(pdfData, "Pdf", false);
	dump_output(skpData, "Skp", false);
	} else {
	std::string textoutput = gTextOutput.str();
	dump_output(textoutput.c_str(), textoutput.length(), "Text", false);
	}
	std::string glinfo = gGLDriverInfo.str();
	dump_output(glinfo.c_str(), glinfo.length(), "GLInfo", true);
	printf("}\n");

	return 0;
	}