| /* |
| * 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 "DMSrcSink.h" |
| #include "SamplePipeControllers.h" |
| #include "SkCodec.h" |
| #include "SkCommonFlags.h" |
| #include "SkData.h" |
| #include "SkDeferredCanvas.h" |
| #include "SkDocument.h" |
| #include "SkError.h" |
| #include "SkFunction.h" |
| #include "SkImageGenerator.h" |
| #include "SkMultiPictureDraw.h" |
| #include "SkNullCanvas.h" |
| #include "SkOSFile.h" |
| #include "SkPictureData.h" |
| #include "SkPictureRecorder.h" |
| #include "SkRandom.h" |
| #include "SkRecordDraw.h" |
| #include "SkRecorder.h" |
| #include "SkSVGCanvas.h" |
| #include "SkScanlineDecoder.h" |
| #include "SkStream.h" |
| #include "SkXMLWriter.h" |
| |
| DEFINE_bool(multiPage, false, "For document-type backends, render the source" |
| " into multiple pages"); |
| |
| static bool lazy_decode_bitmap(const void* src, size_t size, SkBitmap* dst) { |
| SkAutoTUnref<SkData> encoded(SkData::NewWithCopy(src, size)); |
| return encoded && SkInstallDiscardablePixelRef(encoded, dst); |
| } |
| |
| namespace DM { |
| |
| GMSrc::GMSrc(skiagm::GMRegistry::Factory factory) : fFactory(factory) {} |
| |
| Error GMSrc::draw(SkCanvas* canvas) const { |
| SkAutoTDelete<skiagm::GM> gm(fFactory(NULL)); |
| canvas->concat(gm->getInitialTransform()); |
| gm->draw(canvas); |
| return ""; |
| } |
| |
| SkISize GMSrc::size() const { |
| SkAutoTDelete<skiagm::GM> gm(fFactory(NULL)); |
| return gm->getISize(); |
| } |
| |
| Name GMSrc::name() const { |
| SkAutoTDelete<skiagm::GM> gm(fFactory(NULL)); |
| return gm->getName(); |
| } |
| |
| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| |
| CodecSrc::CodecSrc(Path path, Mode mode, DstColorType dstColorType) |
| : fPath(path) |
| , fMode(mode) |
| , fDstColorType(dstColorType) |
| {} |
| |
| Error CodecSrc::draw(SkCanvas* canvas) const { |
| SkImageInfo canvasInfo; |
| if (NULL == canvas->peekPixels(&canvasInfo, NULL)) { |
| // TODO: Once we implement GPU paths (e.g. JPEG YUV), we should use a deferred decode to |
| // let the GPU handle it. |
| return Error::Nonfatal("No need to test decoding to non-raster backend."); |
| } |
| |
| SkAutoTUnref<SkData> encoded(SkData::NewFromFileName(fPath.c_str())); |
| if (!encoded) { |
| return SkStringPrintf("Couldn't read %s.", fPath.c_str()); |
| } |
| SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(encoded)); |
| if (NULL == codec.get()) { |
| return SkStringPrintf("Couldn't create codec for %s.", fPath.c_str()); |
| } |
| |
| // Choose the color type to decode to |
| SkImageInfo decodeInfo = codec->getInfo(); |
| SkColorType canvasColorType = canvasInfo.colorType(); |
| switch (fDstColorType) { |
| case kIndex8_Always_DstColorType: |
| decodeInfo = codec->getInfo().makeColorType(kIndex_8_SkColorType); |
| if (kRGB_565_SkColorType == canvasColorType) { |
| return Error::Nonfatal("Testing non-565 to 565 is uninteresting."); |
| } |
| break; |
| case kGrayscale_Always_DstColorType: |
| decodeInfo = codec->getInfo().makeColorType(kGray_8_SkColorType); |
| if (kRGB_565_SkColorType == canvasColorType) { |
| return Error::Nonfatal("Testing non-565 to 565 is uninteresting."); |
| } |
| break; |
| default: |
| decodeInfo = decodeInfo.makeColorType(canvasColorType); |
| break; |
| } |
| |
| // Construct a color table for the decode if necessary |
| SkAutoTUnref<SkColorTable> colorTable(NULL); |
| SkPMColor* colorPtr = NULL; |
| int* colorCountPtr = NULL; |
| int maxColors = 256; |
| if (kIndex_8_SkColorType == decodeInfo.colorType()) { |
| SkPMColor colors[256]; |
| colorTable.reset(SkNEW_ARGS(SkColorTable, (colors, maxColors))); |
| colorPtr = const_cast<SkPMColor*>(colorTable->readColors()); |
| colorCountPtr = &maxColors; |
| } |
| |
| // FIXME: Currently we cannot draw unpremultiplied sources. |
| if (decodeInfo.alphaType() == kUnpremul_SkAlphaType) { |
| decodeInfo = decodeInfo.makeAlphaType(kPremul_SkAlphaType); |
| } |
| |
| SkBitmap bitmap; |
| if (!bitmap.tryAllocPixels(decodeInfo, NULL, colorTable.get())) { |
| return SkStringPrintf("Image(%s) is too large (%d x %d)\n", fPath.c_str(), |
| decodeInfo.width(), decodeInfo.height()); |
| } |
| |
| switch (fMode) { |
| case kNormal_Mode: |
| switch (codec->getPixels(decodeInfo, bitmap.getPixels(), bitmap.rowBytes(), NULL, |
| colorPtr, colorCountPtr)) { |
| case SkImageGenerator::kSuccess: |
| // We consider incomplete to be valid, since we should still decode what is |
| // available. |
| case SkImageGenerator::kIncompleteInput: |
| break; |
| case SkImageGenerator::kInvalidConversion: |
| return Error::Nonfatal("Incompatible colortype conversion"); |
| default: |
| // Everything else is considered a failure. |
| return SkStringPrintf("Couldn't getPixels %s.", fPath.c_str()); |
| } |
| break; |
| case kScanline_Mode: { |
| SkScanlineDecoder* scanlineDecoder = codec->getScanlineDecoder(decodeInfo, NULL, |
| colorPtr, colorCountPtr); |
| if (NULL == scanlineDecoder) { |
| return Error::Nonfatal("Cannot use scanline decoder for all images"); |
| } |
| for (int y = 0; y < decodeInfo.height(); ++y) { |
| const SkImageGenerator::Result result = scanlineDecoder->getScanlines( |
| bitmap.getAddr(0, y), 1, 0); |
| switch (result) { |
| case SkImageGenerator::kSuccess: |
| case SkImageGenerator::kIncompleteInput: |
| break; |
| default: |
| return SkStringPrintf("%s failed after %d scanlines with error message %d", |
| fPath.c_str(), y-1, (int) result); |
| } |
| } |
| break; |
| } |
| } |
| canvas->drawBitmap(bitmap, 0, 0); |
| return ""; |
| } |
| |
| SkISize CodecSrc::size() const { |
| SkAutoTUnref<SkData> encoded(SkData::NewFromFileName(fPath.c_str())); |
| SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(encoded)); |
| if (NULL != codec) { |
| return codec->getInfo().dimensions(); |
| } else { |
| return SkISize::Make(0, 0); |
| } |
| } |
| |
| Name CodecSrc::name() const { |
| return SkOSPath::Basename(fPath.c_str()); |
| } |
| |
| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| |
| ImageSrc::ImageSrc(Path path, int divisor) : fPath(path), fDivisor(divisor) {} |
| |
| Error ImageSrc::draw(SkCanvas* canvas) const { |
| SkImageInfo canvasInfo; |
| if (NULL == canvas->peekPixels(&canvasInfo, NULL)) { |
| // TODO: Instead, use lazy decoding to allow the GPU to handle cases like YUV. |
| return Error::Nonfatal("No need to test decoding to non-raster backend."); |
| } |
| |
| SkAutoTUnref<SkData> encoded(SkData::NewFromFileName(fPath.c_str())); |
| if (!encoded) { |
| return SkStringPrintf("Couldn't read %s.", fPath.c_str()); |
| } |
| const SkColorType dstColorType = canvasInfo.colorType(); |
| if (fDivisor == 0) { |
| // Decode the full image. |
| SkBitmap bitmap; |
| if (!SkImageDecoder::DecodeMemory(encoded->data(), encoded->size(), &bitmap, |
| dstColorType, SkImageDecoder::kDecodePixels_Mode)) { |
| return SkStringPrintf("Couldn't decode %s.", fPath.c_str()); |
| } |
| if (kRGB_565_SkColorType == dstColorType && !bitmap.isOpaque()) { |
| // Do not draw a bitmap with alpha to a destination without alpha. |
| return Error::Nonfatal("Uninteresting to decode image with alpha into 565."); |
| } |
| encoded.reset((SkData*)NULL); // Might as well drop this when we're done with it. |
| canvas->drawBitmap(bitmap, 0,0); |
| return ""; |
| } |
| // Decode subsets. This is a little involved. |
| SkAutoTDelete<SkMemoryStream> stream(new SkMemoryStream(encoded)); |
| SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(stream.get())); |
| if (!decoder) { |
| return SkStringPrintf("Can't find a good decoder for %s.", fPath.c_str()); |
| } |
| stream->rewind(); |
| int w,h; |
| if (!decoder->buildTileIndex(stream.detach(), &w, &h) || w*h == 1) { |
| return Error::Nonfatal("Subset decoding not supported."); |
| } |
| |
| // Divide the image into subsets that cover the entire image. |
| if (fDivisor > w || fDivisor > h) { |
| return SkStringPrintf("divisor %d is too big for %s with dimensions (%d x %d)", |
| fDivisor, fPath.c_str(), w, h); |
| } |
| const int subsetWidth = w / fDivisor, |
| subsetHeight = h / fDivisor; |
| for (int y = 0; y < h; y += subsetHeight) { |
| for (int x = 0; x < w; x += subsetWidth) { |
| SkBitmap subset; |
| SkIRect rect = SkIRect::MakeXYWH(x, y, subsetWidth, subsetHeight); |
| if (!decoder->decodeSubset(&subset, rect, dstColorType)) { |
| return SkStringPrintf("Could not decode subset (%d, %d, %d, %d).", |
| x, y, x+subsetWidth, y+subsetHeight); |
| } |
| if (kRGB_565_SkColorType == dstColorType && !subset.isOpaque()) { |
| // Do not draw a bitmap with alpha to a destination without alpha. |
| // This is not an error, but there is nothing interesting to show. |
| |
| // This should only happen on the first iteration through the loop. |
| SkASSERT(0 == x && 0 == y); |
| |
| return Error::Nonfatal("Uninteresting to decode image with alpha into 565."); |
| } |
| canvas->drawBitmap(subset, SkIntToScalar(x), SkIntToScalar(y)); |
| } |
| } |
| return ""; |
| } |
| |
| SkISize ImageSrc::size() const { |
| SkAutoTUnref<SkData> encoded(SkData::NewFromFileName(fPath.c_str())); |
| SkBitmap bitmap; |
| if (!encoded || !SkImageDecoder::DecodeMemory(encoded->data(), |
| encoded->size(), |
| &bitmap, |
| kUnknown_SkColorType, |
| SkImageDecoder::kDecodeBounds_Mode)) { |
| return SkISize::Make(0,0); |
| } |
| return bitmap.dimensions(); |
| } |
| |
| Name ImageSrc::name() const { |
| return SkOSPath::Basename(fPath.c_str()); |
| } |
| |
| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| |
| static const SkRect kSKPViewport = {0,0, 1000,1000}; |
| |
| SKPSrc::SKPSrc(Path path) : fPath(path) {} |
| |
| Error SKPSrc::draw(SkCanvas* canvas) const { |
| SkAutoTDelete<SkStream> stream(SkStream::NewFromFile(fPath.c_str())); |
| if (!stream) { |
| return SkStringPrintf("Couldn't read %s.", fPath.c_str()); |
| } |
| SkAutoTUnref<SkPicture> pic(SkPicture::CreateFromStream(stream, &lazy_decode_bitmap)); |
| if (!pic) { |
| return SkStringPrintf("Couldn't decode %s as a picture.", fPath.c_str()); |
| } |
| stream.reset((SkStream*)NULL); // Might as well drop this when we're done with it. |
| |
| canvas->clipRect(kSKPViewport); |
| canvas->drawPicture(pic); |
| return ""; |
| } |
| |
| SkISize SKPSrc::size() const { |
| SkAutoTDelete<SkStream> stream(SkStream::NewFromFile(fPath.c_str())); |
| if (!stream) { |
| return SkISize::Make(0,0); |
| } |
| SkPictInfo info; |
| if (!SkPicture::InternalOnly_StreamIsSKP(stream, &info)) { |
| return SkISize::Make(0,0); |
| } |
| SkRect viewport = kSKPViewport; |
| if (!viewport.intersect(info.fCullRect)) { |
| return SkISize::Make(0,0); |
| } |
| return viewport.roundOut().size(); |
| } |
| |
| Name SKPSrc::name() const { return SkOSPath::Basename(fPath.c_str()); } |
| |
| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| |
| Error NullSink::draw(const Src& src, SkBitmap*, SkWStream*, SkString*) const { |
| SkAutoTDelete<SkCanvas> canvas(SkCreateNullCanvas()); |
| return src.draw(canvas); |
| } |
| |
| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| |
| DEFINE_bool(gpuStats, false, "Append GPU stats to the log for each GPU task?"); |
| |
| GPUSink::GPUSink(GrContextFactory::GLContextType ct, |
| GrGLStandard api, |
| int samples, |
| bool dfText, |
| bool threaded) |
| : fContextType(ct) |
| , fGpuAPI(api) |
| , fSampleCount(samples) |
| , fUseDFText(dfText) |
| , fThreaded(threaded) {} |
| |
| int GPUSink::enclave() const { |
| return fThreaded ? kAnyThread_Enclave : kGPU_Enclave; |
| } |
| |
| void PreAbandonGpuContextErrorHandler(SkError, void*) {} |
| |
| Error GPUSink::draw(const Src& src, SkBitmap* dst, SkWStream*, SkString* log) const { |
| GrContextFactory factory; |
| const SkISize size = src.size(); |
| const SkImageInfo info = |
| SkImageInfo::Make(size.width(), size.height(), kN32_SkColorType, kPremul_SkAlphaType); |
| SkAutoTUnref<SkSurface> surface( |
| NewGpuSurface(&factory, fContextType, fGpuAPI, info, fSampleCount, fUseDFText)); |
| if (!surface) { |
| return "Could not create a surface."; |
| } |
| if (FLAGS_preAbandonGpuContext) { |
| SkSetErrorCallback(&PreAbandonGpuContextErrorHandler, NULL); |
| factory.abandonContexts(); |
| } |
| SkCanvas* canvas = surface->getCanvas(); |
| Error err = src.draw(canvas); |
| if (!err.isEmpty()) { |
| return err; |
| } |
| canvas->flush(); |
| if (FLAGS_gpuStats) { |
| canvas->getGrContext()->dumpCacheStats(log); |
| canvas->getGrContext()->dumpGpuStats(log); |
| } |
| dst->allocPixels(info); |
| canvas->readPixels(dst, 0, 0); |
| if (FLAGS_abandonGpuContext) { |
| factory.abandonContexts(); |
| } |
| return ""; |
| } |
| |
| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| |
| static Error draw_skdocument(const Src& src, SkDocument* doc, SkWStream* dst) { |
| // Print the given DM:Src to a document, breaking on 8.5x11 pages. |
| SkASSERT(doc); |
| int width = src.size().width(), |
| height = src.size().height(); |
| |
| if (FLAGS_multiPage) { |
| const int kLetterWidth = 612, // 8.5 * 72 |
| kLetterHeight = 792; // 11 * 72 |
| const SkRect letter = SkRect::MakeWH(SkIntToScalar(kLetterWidth), |
| SkIntToScalar(kLetterHeight)); |
| |
| int xPages = ((width - 1) / kLetterWidth) + 1; |
| int yPages = ((height - 1) / kLetterHeight) + 1; |
| |
| for (int y = 0; y < yPages; ++y) { |
| for (int x = 0; x < xPages; ++x) { |
| int w = SkTMin(kLetterWidth, width - (x * kLetterWidth)); |
| int h = SkTMin(kLetterHeight, height - (y * kLetterHeight)); |
| SkCanvas* canvas = |
| doc->beginPage(SkIntToScalar(w), SkIntToScalar(h)); |
| if (!canvas) { |
| return "SkDocument::beginPage(w,h) returned NULL"; |
| } |
| canvas->clipRect(letter); |
| canvas->translate(-letter.width() * x, -letter.height() * y); |
| Error err = src.draw(canvas); |
| if (!err.isEmpty()) { |
| return err; |
| } |
| doc->endPage(); |
| } |
| } |
| } else { |
| SkCanvas* canvas = |
| doc->beginPage(SkIntToScalar(width), SkIntToScalar(height)); |
| if (!canvas) { |
| return "SkDocument::beginPage(w,h) returned NULL"; |
| } |
| Error err = src.draw(canvas); |
| if (!err.isEmpty()) { |
| return err; |
| } |
| doc->endPage(); |
| } |
| if (!doc->close()) { |
| return "SkDocument::close() returned false"; |
| } |
| dst->flush(); |
| return ""; |
| } |
| |
| PDFSink::PDFSink() {} |
| |
| Error PDFSink::draw(const Src& src, SkBitmap*, SkWStream* dst, SkString*) const { |
| SkAutoTUnref<SkDocument> doc(SkDocument::CreatePDF(dst)); |
| if (!doc) { |
| return "SkDocument::CreatePDF() returned NULL"; |
| } |
| return draw_skdocument(src, doc.get(), dst); |
| } |
| |
| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| |
| XPSSink::XPSSink() {} |
| |
| Error XPSSink::draw(const Src& src, SkBitmap*, SkWStream* dst, SkString*) const { |
| SkAutoTUnref<SkDocument> doc(SkDocument::CreateXPS(dst)); |
| if (!doc) { |
| return "SkDocument::CreateXPS() returned NULL"; |
| } |
| return draw_skdocument(src, doc.get(), dst); |
| } |
| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| |
| SKPSink::SKPSink() {} |
| |
| Error SKPSink::draw(const Src& src, SkBitmap*, SkWStream* dst, SkString*) const { |
| SkSize size; |
| size = src.size(); |
| SkPictureRecorder recorder; |
| Error err = src.draw(recorder.beginRecording(size.width(), size.height())); |
| if (!err.isEmpty()) { |
| return err; |
| } |
| SkAutoTUnref<SkPicture> pic(recorder.endRecording()); |
| pic->serialize(dst); |
| return ""; |
| } |
| |
| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| |
| SVGSink::SVGSink() {} |
| |
| Error SVGSink::draw(const Src& src, SkBitmap*, SkWStream* dst, SkString*) const { |
| SkAutoTDelete<SkXMLWriter> xmlWriter(SkNEW_ARGS(SkXMLStreamWriter, (dst))); |
| SkAutoTUnref<SkCanvas> canvas(SkSVGCanvas::Create( |
| SkRect::MakeWH(SkIntToScalar(src.size().width()), SkIntToScalar(src.size().height())), |
| xmlWriter)); |
| return src.draw(canvas); |
| } |
| |
| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| |
| RasterSink::RasterSink(SkColorType colorType) : fColorType(colorType) {} |
| |
| Error RasterSink::draw(const Src& src, SkBitmap* dst, SkWStream*, SkString*) const { |
| const SkISize size = src.size(); |
| // If there's an appropriate alpha type for this color type, use it, otherwise use premul. |
| SkAlphaType alphaType = kPremul_SkAlphaType; |
| (void)SkColorTypeValidateAlphaType(fColorType, alphaType, &alphaType); |
| |
| dst->allocPixels(SkImageInfo::Make(size.width(), size.height(), fColorType, alphaType)); |
| dst->eraseColor(SK_ColorTRANSPARENT); |
| SkCanvas canvas(*dst); |
| return src.draw(&canvas); |
| } |
| |
| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| |
| // Handy for front-patching a Src. Do whatever up-front work you need, then call draw_to_canvas(), |
| // passing the Sink draw() arguments, a size, and a function draws into an SkCanvas. |
| // Several examples below. |
| |
| static Error draw_to_canvas(Sink* sink, SkBitmap* bitmap, SkWStream* stream, SkString* log, |
| SkISize size, SkFunction<Error(SkCanvas*)> draw) { |
| class ProxySrc : public Src { |
| public: |
| ProxySrc(SkISize size, SkFunction<Error(SkCanvas*)> draw) : fSize(size), fDraw(draw) {} |
| Error draw(SkCanvas* canvas) const override { return fDraw(canvas); } |
| Name name() const override { sk_throw(); return ""; } // Won't be called. |
| SkISize size() const override { return fSize; } |
| private: |
| SkISize fSize; |
| SkFunction<Error(SkCanvas*)> fDraw; |
| }; |
| return sink->draw(ProxySrc(size, draw), bitmap, stream, log); |
| } |
| |
| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| |
| static SkISize auto_compute_translate(SkMatrix* matrix, int srcW, int srcH) { |
| SkRect bounds = SkRect::MakeIWH(srcW, srcH); |
| matrix->mapRect(&bounds); |
| matrix->postTranslate(-bounds.x(), -bounds.y()); |
| return SkISize::Make(SkScalarRoundToInt(bounds.width()), SkScalarRoundToInt(bounds.height())); |
| } |
| |
| ViaMatrix::ViaMatrix(SkMatrix matrix, Sink* sink) : Via(sink), fMatrix(matrix) {} |
| |
| Error ViaMatrix::draw(const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const { |
| SkMatrix matrix = fMatrix; |
| SkISize size = auto_compute_translate(&matrix, src.size().width(), src.size().height()); |
| return draw_to_canvas(fSink, bitmap, stream, log, size, [&](SkCanvas* canvas) { |
| canvas->concat(matrix); |
| return src.draw(canvas); |
| }); |
| } |
| |
| // Undoes any flip or 90 degree rotate without changing the scale of the bitmap. |
| // This should be pixel-preserving. |
| ViaUpright::ViaUpright(SkMatrix matrix, Sink* sink) : Via(sink), fMatrix(matrix) {} |
| |
| Error ViaUpright::draw(const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const { |
| Error err = fSink->draw(src, bitmap, stream, log); |
| if (!err.isEmpty()) { |
| return err; |
| } |
| |
| SkMatrix inverse; |
| if (!fMatrix.rectStaysRect() || !fMatrix.invert(&inverse)) { |
| return "Cannot upright --matrix."; |
| } |
| SkMatrix upright = SkMatrix::I(); |
| upright.setScaleX(SkScalarSignAsScalar(inverse.getScaleX())); |
| upright.setScaleY(SkScalarSignAsScalar(inverse.getScaleY())); |
| upright.setSkewX(SkScalarSignAsScalar(inverse.getSkewX())); |
| upright.setSkewY(SkScalarSignAsScalar(inverse.getSkewY())); |
| |
| SkBitmap uprighted; |
| SkISize size = auto_compute_translate(&upright, bitmap->width(), bitmap->height()); |
| uprighted.allocPixels(bitmap->info().makeWH(size.width(), size.height())); |
| |
| SkCanvas canvas(uprighted); |
| canvas.concat(upright); |
| SkPaint paint; |
| paint.setXfermodeMode(SkXfermode::kSrc_Mode); |
| canvas.drawBitmap(*bitmap, 0, 0, &paint); |
| |
| *bitmap = uprighted; |
| bitmap->lockPixels(); |
| return ""; |
| } |
| |
| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| |
| Error ViaPipe::draw(const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const { |
| auto size = src.size(); |
| return draw_to_canvas(fSink, bitmap, stream, log, size, [&](SkCanvas* canvas) { |
| PipeController controller(canvas, &SkImageDecoder::DecodeMemory); |
| SkGPipeWriter pipe; |
| const uint32_t kFlags = 0; // We mirror SkDeferredCanvas, which doesn't use any flags. |
| return src.draw(pipe.startRecording(&controller, kFlags, size.width(), size.height())); |
| }); |
| } |
| |
| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| |
| Error ViaDeferred::draw(const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const { |
| // We draw via a deferred canvas into a surface that's compatible with the original canvas, |
| // then snap that surface as an image and draw it into the original canvas. |
| return draw_to_canvas(fSink, bitmap, stream, log, src.size(), [&](SkCanvas* canvas) -> Error { |
| SkAutoTUnref<SkSurface> surface(canvas->newSurface(canvas->imageInfo())); |
| if (!surface.get()) { |
| return "can't make surface for deferred canvas"; |
| } |
| SkAutoTDelete<SkDeferredCanvas> defcan(SkDeferredCanvas::Create(surface)); |
| Error err = src.draw(defcan); |
| if (!err.isEmpty()) { |
| return err; |
| } |
| SkAutoTUnref<SkImage> image(defcan->newImageSnapshot()); |
| if (!image) { |
| return "failed to create deferred image snapshot"; |
| } |
| canvas->drawImage(image, 0, 0, NULL); |
| return ""; |
| }); |
| } |
| |
| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| |
| Error ViaSerialization::draw( |
| const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const { |
| // Record our Src into a picture. |
| auto size = src.size(); |
| SkPictureRecorder recorder; |
| Error err = src.draw(recorder.beginRecording(SkIntToScalar(size.width()), |
| SkIntToScalar(size.height()))); |
| if (!err.isEmpty()) { |
| return err; |
| } |
| SkAutoTUnref<SkPicture> pic(recorder.endRecording()); |
| |
| // Serialize it and then deserialize it. |
| SkDynamicMemoryWStream wStream; |
| pic->serialize(&wStream); |
| SkAutoTDelete<SkStream> rStream(wStream.detachAsStream()); |
| SkAutoTUnref<SkPicture> deserialized(SkPicture::CreateFromStream(rStream, &lazy_decode_bitmap)); |
| |
| return draw_to_canvas(fSink, bitmap, stream, log, size, [&](SkCanvas* canvas) { |
| canvas->drawPicture(deserialized); |
| return ""; |
| }); |
| } |
| |
| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| |
| ViaTiles::ViaTiles(int w, int h, SkBBHFactory* factory, Sink* sink) |
| : Via(sink) |
| , fW(w) |
| , fH(h) |
| , fFactory(factory) {} |
| |
| Error ViaTiles::draw(const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const { |
| auto size = src.size(); |
| SkPictureRecorder recorder; |
| Error err = src.draw(recorder.beginRecording(SkIntToScalar(size.width()), |
| SkIntToScalar(size.height()), |
| fFactory.get())); |
| if (!err.isEmpty()) { |
| return err; |
| } |
| SkAutoTUnref<SkPicture> pic(recorder.endRecordingAsPicture()); |
| |
| return draw_to_canvas(fSink, bitmap, stream, log, src.size(), [&](SkCanvas* canvas) { |
| const int xTiles = (size.width() + fW - 1) / fW, |
| yTiles = (size.height() + fH - 1) / fH; |
| SkMultiPictureDraw mpd(xTiles*yTiles); |
| SkTDArray<SkSurface*> surfaces; |
| surfaces.setReserve(xTiles*yTiles); |
| |
| SkImageInfo info = canvas->imageInfo().makeWH(fW, fH); |
| for (int j = 0; j < yTiles; j++) { |
| for (int i = 0; i < xTiles; i++) { |
| // This lets our ultimate Sink determine the best kind of surface. |
| // E.g., if it's a GpuSink, the surfaces and images are textures. |
| SkSurface* s = canvas->newSurface(info); |
| if (!s) { |
| s = SkSurface::NewRaster(info); // Some canvases can't create surfaces. |
| } |
| surfaces.push(s); |
| SkCanvas* c = s->getCanvas(); |
| c->translate(SkIntToScalar(-i * fW), |
| SkIntToScalar(-j * fH)); // Line up the canvas with this tile. |
| mpd.add(c, pic); |
| } |
| } |
| mpd.draw(); |
| for (int j = 0; j < yTiles; j++) { |
| for (int i = 0; i < xTiles; i++) { |
| SkAutoTUnref<SkImage> image(surfaces[i+xTiles*j]->newImageSnapshot()); |
| canvas->drawImage(image, SkIntToScalar(i*fW), SkIntToScalar(j*fH)); |
| } |
| } |
| surfaces.unrefAll(); |
| return ""; |
| }); |
| } |
| |
| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| |
| // Draw the Src into two pictures, then draw the second picture into the wrapped Sink. |
| // This tests that any shortcuts we may take while recording that second picture are legal. |
| Error ViaSecondPicture::draw( |
| const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const { |
| auto size = src.size(); |
| return draw_to_canvas(fSink, bitmap, stream, log, size, [&](SkCanvas* canvas) -> Error { |
| SkPictureRecorder recorder; |
| SkAutoTUnref<SkPicture> pic; |
| for (int i = 0; i < 2; i++) { |
| Error err = src.draw(recorder.beginRecording(SkIntToScalar(size.width()), |
| SkIntToScalar(size.height()))); |
| if (!err.isEmpty()) { |
| return err; |
| } |
| pic.reset(recorder.endRecordingAsPicture()); |
| } |
| canvas->drawPicture(pic); |
| return ""; |
| }); |
| } |
| |
| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| |
| // Draw the Src twice. This can help exercise caching. |
| Error ViaTwice::draw(const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const { |
| return draw_to_canvas(fSink, bitmap, stream, log, src.size(), [&](SkCanvas* canvas) -> Error { |
| for (int i = 0; i < 2; i++) { |
| SkAutoCanvasRestore acr(canvas, true/*save now*/); |
| canvas->clear(SK_ColorTRANSPARENT); |
| Error err = src.draw(canvas); |
| if (err.isEmpty()) { |
| return err; |
| } |
| } |
| return ""; |
| }); |
| } |
| |
| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| |
| // This is like SkRecords::Draw, in that it plays back SkRecords ops into a Canvas. |
| // Unlike SkRecords::Draw, it builds a single-op sub-picture out of each Draw-type op. |
| // This is an only-slightly-exaggerated simluation of Blink's Slimming Paint pictures. |
| struct DrawsAsSingletonPictures { |
| SkCanvas* fCanvas; |
| |
| SK_CREATE_MEMBER_DETECTOR(paint); |
| |
| template <typename T> |
| void draw(const T& op, SkCanvas* canvas) { |
| // We must pass SkMatrix::I() as our initial matrix. |
| // By default SkRecords::Draw() uses the canvas' matrix as its initial matrix, |
| // which would have the funky effect of applying transforms over and over. |
| SkRecords::Draw(canvas, nullptr, nullptr, 0, &SkMatrix::I())(op); |
| } |
| |
| // Most things that have paints are Draw-type ops. Create sub-pictures for each. |
| template <typename T> |
| SK_WHEN(HasMember_paint<T>, void) operator()(const T& op) { |
| SkPictureRecorder rec; |
| this->draw(op, rec.beginRecording(SkRect::MakeLargest())); |
| SkAutoTUnref<SkPicture> pic(rec.endRecordingAsPicture()); |
| fCanvas->drawPicture(pic); |
| } |
| |
| // If you don't have a paint or are a SaveLayer, you're not a Draw-type op. |
| // We cannot make subpictures out of these because they affect state. Draw them directly. |
| template <typename T> |
| SK_WHEN(!HasMember_paint<T>, void) operator()(const T& op) { this->draw(op, fCanvas); } |
| void operator()(const SkRecords::SaveLayer& op) { this->draw(op, fCanvas); } |
| }; |
| |
| // Record Src into a picture, then record it into a macro picture with a sub-picture for each draw. |
| // Then play back that macro picture into our wrapped sink. |
| Error ViaSingletonPictures::draw( |
| const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const { |
| auto size = src.size(); |
| return draw_to_canvas(fSink, bitmap, stream, log, size, [&](SkCanvas* canvas) -> Error { |
| // Use low-level (Skia-private) recording APIs so we can read the SkRecord. |
| SkRecord skr; |
| SkRecorder recorder(&skr, size.width(), size.height()); |
| Error err = src.draw(&recorder); |
| if (!err.isEmpty()) { |
| return err; |
| } |
| |
| // Record our macro-picture, with each draw op as its own sub-picture. |
| SkPictureRecorder macroRec; |
| SkCanvas* macroCanvas = macroRec.beginRecording(SkIntToScalar(size.width()), |
| SkIntToScalar(size.height())); |
| DrawsAsSingletonPictures drawsAsSingletonPictures = { macroCanvas }; |
| for (unsigned i = 0; i < skr.count(); i++) { |
| skr.visit<void>(i, drawsAsSingletonPictures); |
| } |
| SkAutoTUnref<SkPicture> macroPic(macroRec.endRecordingAsPicture()); |
| |
| canvas->drawPicture(macroPic); |
| return ""; |
| }); |
| } |
| |
| } // namespace DM |