2016-01-22 19:21:43 +00:00
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/*
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* Copyright 2016 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "GrCaps.h"
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#include "GrContextFactory.h"
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#include "SkCanvas.h"
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#include "SkCommandLineFlags.h"
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2016-01-27 15:03:29 +00:00
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#include "SkPicture.h"
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2016-01-22 19:21:43 +00:00
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#include "SkStream.h"
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#include "SkSurface.h"
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#include <sys/socket.h>
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#include <microhttpd.h>
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// To get image decoders linked in we have to do the below magic
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#include "SkForceLinking.h"
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#include "SkImageDecoder.h"
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__SK_FORCE_IMAGE_DECODER_LINKING;
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// TODO make this configurable
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#define PORT 8888
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DEFINE_string(dir, "skps", "Directory to read skp.");
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DEFINE_string(name, "desk_carsvg", "skp to load.");
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DEFINE_bool(useTemplate, true, "whether or not to use the skdebugger template string.");
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// TODO probably want to make this configurable
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static const int kImageWidth = 1920;
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static const int kImageHeight = 1080;
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// TODO factor this out into functions, also handle CPU path
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SkData* setupAndDrawToCanvas(SkStream* stream, SkString* error) {
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GrContextOptions grContextOpts;
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SkAutoTDelete<GrContextFactory> factory(new GrContextFactory(grContextOpts));
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GrContext* context = factory->get(GrContextFactory::kNative_GLContextType,
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GrContextFactory::kNone_GLContextOptions);
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int maxRTSize = context->caps()->maxRenderTargetSize();
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SkImageInfo info = SkImageInfo::Make(SkTMin(kImageWidth, maxRTSize),
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SkTMin(kImageHeight, maxRTSize),
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kN32_SkColorType, kPremul_SkAlphaType);
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uint32_t flags = 0;
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SkSurfaceProps props(flags, SkSurfaceProps::kLegacyFontHost_InitType);
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SkAutoTUnref<SkSurface> surface(SkSurface::NewRenderTarget(context,
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SkSurface::kNo_Budgeted, info,
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0, &props));
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SkASSERT(surface.get());
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SkGLContext* gl = factory->getContextInfo(GrContextFactory::kNative_GLContextType,
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GrContextFactory::kNone_GLContextOptions).fGLContext;
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gl->makeCurrent();
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// draw
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SkAutoTUnref<SkPicture> pic(SkPicture::CreateFromStream(stream));
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if (pic.get() == nullptr) {
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error->appendf("Could not create picture from stream.\n");
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return nullptr;
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}
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SkCanvas* canvas = surface->getCanvas();
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canvas->drawPicture(pic);
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// capture pixels
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SkBitmap bmp;
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bmp.setInfo(canvas->imageInfo());
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if (!canvas->readPixels(&bmp, 0, 0)) {
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error->appendf("Can't read canvas pixels.\n");
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return nullptr;
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}
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// write to png
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SkData* data = SkImageEncoder::EncodeData(bmp, SkImageEncoder::kPNG_Type, 100);
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if (!data) {
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error->appendf("Can't encode a PNG.\n");
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return nullptr;
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}
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return data;
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}
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// TODO move to template file
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SkString generateTemplate(SkString source) {
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SkString debuggerTemplate;
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debuggerTemplate.appendf(
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"<!DOCTYPE html>\n"
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"<html>\n"
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"<head>\n"
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" <title>SkDebugger</title>\n"
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" <meta charset=\"utf-8\" />\n"
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" <meta http-equiv=\"X-UA-Compatible\" content=\"IE=egde,chrome=1\">\n"
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" <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n"
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" <script src=\"%s/res/js/core.js\" type=\"text/javascript\" charset=\"utf-8\"></script>\n"
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" <link href=\"%s/res/vul/elements.html\" rel=\"import\" />\n"
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"</head>\n"
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"<body class=\"fullbleed layout vertical\">\n"
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" <debugger-app-sk>This is the app."
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" </debugger-app-sk>\n"
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"</body>\n"
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"</html>", source.c_str(), source.c_str());
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return debuggerTemplate;
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}
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2016-01-27 15:03:29 +00:00
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struct UploadContext {
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SkDynamicMemoryWStream stream;
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MHD_PostProcessor* pp;
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MHD_Connection* connection;
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};
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struct Request {
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Request() : fUploadContext(nullptr) {}
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UploadContext* fUploadContext;
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SkAutoTUnref<SkData> fPNG;
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};
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static const size_t kBufferSize = 1024;
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static int process_upload_data(void* cls, enum MHD_ValueKind kind,
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const char* key, const char* filename,
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const char* content_type, const char* transfer_encoding,
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const char* data, uint64_t off, size_t size) {
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struct UploadContext* uc = reinterpret_cast<UploadContext*>(cls);
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if (0 != size) {
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uc->stream.write(data, size);
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}
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return MHD_YES;
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}
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2016-01-27 15:40:29 +00:00
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static int SendImage(MHD_Connection* connection, const SkData* data) {
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MHD_Response* response = MHD_create_response_from_buffer(data->size(),
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const_cast<void*>(data->data()),
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MHD_RESPMEM_MUST_COPY);
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MHD_add_response_header(response, "Content-Type", "image/png");
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int ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
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MHD_destroy_response(response);
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return ret;
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}
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static int SendTemplate(MHD_Connection* connection) {
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SkString debuggerTemplate = generateTemplate(SkString("http://debugger.skia.org"));
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2016-01-27 15:40:29 +00:00
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MHD_Response* response = MHD_create_response_from_buffer(
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debuggerTemplate.size(),
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(void*) const_cast<char*>(debuggerTemplate.c_str()),
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MHD_RESPMEM_MUST_COPY);
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2016-01-27 15:40:29 +00:00
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int ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
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MHD_destroy_response(response);
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return ret;
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}
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typedef int (*UrlHandler)(Request* request, MHD_Connection* connection,
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const char* upload_data, size_t* upload_data_size);
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2016-01-27 15:40:29 +00:00
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int rootHandler(Request* request, MHD_Connection* connection,
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const char* upload_data, size_t* upload_data_size) {
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return SendTemplate(connection);
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}
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int postHandler(Request* request, MHD_Connection* connection,
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const char* upload_data, size_t* upload_data_size) {
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UploadContext* uc = request->fUploadContext;
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// New connection
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if (!uc) {
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// TODO make this a method on request
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uc = new UploadContext;
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uc->connection = connection;
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uc->pp = MHD_create_post_processor(connection, kBufferSize, &process_upload_data, uc);
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SkASSERT(uc->pp);
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request->fUploadContext = uc;
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return MHD_YES;
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}
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// in process upload
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if (0 != *upload_data_size) {
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SkASSERT(uc->pp);
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MHD_post_process(uc->pp, upload_data, *upload_data_size);
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*upload_data_size = 0;
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return MHD_YES;
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}
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// end of upload
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MHD_destroy_post_processor(uc->pp);
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uc->pp = nullptr;
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2016-01-27 15:40:29 +00:00
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// TODO response
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SkString error;
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SkData* data = setupAndDrawToCanvas(uc->stream.detachAsStream(), &error);
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if (!data) {
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// TODO send error
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return MHD_YES;
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}
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request->fPNG.reset(data);
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return SendTemplate(connection);
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}
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int imgHandler(Request* request, MHD_Connection* connection,
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const char* upload_data, size_t* upload_data_size) {
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if (request->fPNG.get()) {
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SkData* data = request->fPNG.get();
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return SendImage(connection, data);
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}
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return MHD_NO;
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}
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class UrlManager {
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public:
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UrlManager() {
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// Register handlers
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fHandlers.push_back({MHD_HTTP_METHOD_GET, "/", rootHandler});
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fHandlers.push_back({MHD_HTTP_METHOD_POST, "/new", postHandler});
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fHandlers.push_back({MHD_HTTP_METHOD_GET, "/img", imgHandler});
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}
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// This is clearly not efficient for a large number of urls and handlers
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int invoke(Request* request, MHD_Connection* connection, const char* url, const char* method,
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const char* upload_data, size_t* upload_data_size) const {
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for (int i = 0; i < fHandlers.count(); i++) {
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const Url& urlHandler = fHandlers[i];
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if (0 == strcmp(method, urlHandler.fMethod) &&
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0 == strcmp(url, urlHandler.fPath)) {
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return (*urlHandler.fHandler)(request, connection, upload_data,
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upload_data_size);
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}
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}
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return MHD_NO;
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}
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2016-01-27 15:40:29 +00:00
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private:
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struct Url {
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const char* fMethod;
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const char* fPath;
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UrlHandler fHandler;
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};
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SkTArray<Url> fHandlers;
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};
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const UrlManager kUrlManager;
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int answer_to_connection(void* cls, struct MHD_Connection* connection,
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const char* url, const char* method, const char* version,
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const char* upload_data, size_t* upload_data_size,
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void** con_cls) {
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SkDebugf("New %s request for %s using version %s\n", method, url, version);
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Request* request = reinterpret_cast<Request*>(cls);
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return kUrlManager.invoke(request, connection, url, method, upload_data, upload_data_size);
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}
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int skiaserve_main() {
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Request request; // This simple server has one request
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struct MHD_Daemon* daemon;
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daemon = MHD_start_daemon(MHD_USE_SELECT_INTERNALLY, PORT, nullptr, nullptr,
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&answer_to_connection, &request,
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MHD_OPTION_END);
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if (NULL == daemon) {
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return 1;
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}
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getchar();
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MHD_stop_daemon(daemon);
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return 0;
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}
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#if !defined SK_BUILD_FOR_IOS
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int main(int argc, char** argv) {
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SkCommandLineFlags::Parse(argc, argv);
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return skiaserve_main();
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}
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#endif
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