ppb_image_data_proxy.cc revision 2a99a7e74a7f215066514fe81d2bfa6639d9eddd
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/proxy/ppb_image_data_proxy.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <string.h> // For memcpy 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <map> 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <vector> 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/singleton.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/weak_ptr.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "build/build_config.h" 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/c/pp_completion_callback.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/c/pp_errors.h" 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/c/pp_resource.h" 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/proxy/enter_proxy.h" 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/proxy/host_dispatcher.h" 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/proxy/plugin_dispatcher.h" 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/proxy/plugin_globals.h" 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/proxy/plugin_resource_tracker.h" 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/proxy/ppapi_messages.h" 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/shared_impl/host_resource.h" 262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "ppapi/shared_impl/proxy_lock.h" 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/shared_impl/resource.h" 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/thunk/enter.h" 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/thunk/thunk.h" 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if !defined(OS_NACL) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "skia/ext/platform_canvas.h" 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/surface/transport_dib.h" 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using ppapi::thunk::PPB_ImageData_API; 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace ppapi { 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace proxy { 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace { 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// How ImageData re-use works 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// -------------------------- 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// When a plugin does ReplaceContents, it transfers the ImageData to the system 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// for use as the backing store for the instance. When animating plugins (like 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// video) re-creating image datas for each frame and mapping the memory has a 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// high overhead. So we try to re-use these when possible. 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 1. Plugin does ReplaceContents and Flush and the proxy queues up an 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// asynchronous request to the renderer. 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 2. Plugin frees its ImageData reference. If it doesn't do this we can't 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// re-use it. 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 3. When the last plugin ref of an ImageData is released, we don't actually 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// delete it. Instead we put it on a queue where we hold onto it in the 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// plugin process for a short period of time. 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 4. When the Flush for the Graphics2D.ReplaceContents is executed, the proxy 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// will request the old ImageData. This is the one that's being replaced by 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// the new contents so is being abandoned, and without our caching system it 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// would get deleted at this point. 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 5. The proxy in the renderer will send NotifyUnusedImageData back to the 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// plugin process. We check if the given resource is in the queue and mark 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// it as usable. 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 6. When the plugin requests a new image data, we check our queue and if there 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// is a usable ImageData of the right size and format, we'll return it 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// instead of making a new one. Since when you're doing full frame 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// animations, generally the size doesn't change so cache hits should be 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// high. 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Some notes: 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// - We only re-use image datas when the plugin does ReplaceContents on them. 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Theoretically we could re-use them in other cases but the lifetime 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// becomes more difficult to manage. The plugin could have used an ImageData 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// in an arbitrary number of queued up PaintImageData calls which we would 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// have to check. By doing ReplaceContents, the plugin is promising that it's 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// done with the image, so this is a good signal. 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// - If a flush takes a long time or there are many released image datas 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// accumulating in our queue such that some are deleted, we will have 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// released our reference by the time the renderer notifies us of an unused 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// image data. In this case we just give up. 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// - We maintain a per-instance cache. Some pages have many instances of 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Flash, for example, each of a different size. If they're all animating we 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// want each to get its own image data re-use. 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// - We generate new resource IDs when re-use happens to try to avoid weird 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// problems if the plugin messes up its refcounting. 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Keep a cache entry for this many seconds before expiring it. We get an entry 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// back from the renderer after an ImageData is swapped out, so it means the 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// plugin has to be painting at least two frames for this time interval to 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// get caching. 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static const int kMaxAgeSeconds = 2; 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// ImageDataCacheEntry --------------------------------------------------------- 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct ImageDataCacheEntry { 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageDataCacheEntry() : added_time(), usable(false), image() {} 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageDataCacheEntry(ImageData* i) 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : added_time(base::TimeTicks::Now()), 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) usable(false), 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) image(i) { 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeTicks added_time; 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Set to true when the renderer tells us that it's OK to re-use this iamge. 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool usable; 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_refptr<ImageData> image; 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// ImageDataInstanceCache ------------------------------------------------------ 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Per-instance cache of image datas. 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class ImageDataInstanceCache { 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageDataInstanceCache() : next_insertion_point_(0) {} 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // These functions have the same spec as the ones in ImageDataCache. 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_refptr<ImageData> Get(int width, int height, 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_ImageDataFormat format); 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void Add(ImageData* image_data); 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void ImageDataUsable(ImageData* image_data); 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Expires old entries. Returns true if there are still entries in the list, 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // false if this instance cache is now empty. 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool ExpireEntries(); 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void IncrementInsertionPoint(); 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We'll store this many ImageDatas per instance. 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const static int kCacheSize = 2; 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageDataCacheEntry images_[kCacheSize]; 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Index into cache where the next item will go. 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int next_insertion_point_; 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)scoped_refptr<ImageData> ImageDataInstanceCache::Get( 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int width, int height, 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_ImageDataFormat format) { 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Just do a brute-force search since the cache is so small. 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (int i = 0; i < kCacheSize; i++) { 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!images_[i].usable) 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) continue; 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const PP_ImageDataDesc& desc = images_[i].image->desc(); 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (desc.format == format && 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) desc.size.width == width && desc.size.height == height) { 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_refptr<ImageData> ret(images_[i].image); 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) images_[i] = ImageDataCacheEntry(); 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Since we just removed an item, this entry is the best place to insert 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // a subsequent one. 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) next_insertion_point_ = i; 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ret; 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return scoped_refptr<ImageData>(); 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ImageDataInstanceCache::Add(ImageData* image_data) { 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) images_[next_insertion_point_] = ImageDataCacheEntry(image_data); 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IncrementInsertionPoint(); 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ImageDataInstanceCache::ImageDataUsable(ImageData* image_data) { 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (int i = 0; i < kCacheSize; i++) { 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (images_[i].image.get() == image_data) { 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) images_[i].usable = true; 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This test is important. The renderer doesn't guarantee how many image 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // datas it has or when it notifies us when one is usable. Its possible 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // to get into situations where it's always telling us the old one is 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // usable, and then the older one immediately gets expired. Therefore, 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // if the next insertion would overwrite this now-usable entry, make the 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // next insertion overwrite some other entry to avoid the replacement. 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (next_insertion_point_ == i) 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IncrementInsertionPoint(); 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool ImageDataInstanceCache::ExpireEntries() { 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeTicks threshold_time = 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeTicks::Now() - base::TimeDelta::FromSeconds(kMaxAgeSeconds); 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool has_entry = false; 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (int i = 0; i < kCacheSize; i++) { 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (images_[i].image.get()) { 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Entry present. 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (images_[i].added_time <= threshold_time) { 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Found an entry to expire. 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) images_[i] = ImageDataCacheEntry(); 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) next_insertion_point_ = i; 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Found an entry that we're keeping. 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) has_entry = true; 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return has_entry; 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ImageDataInstanceCache::IncrementInsertionPoint() { 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Go to the next location, wrapping around to get LRU. 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) next_insertion_point_++; 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (next_insertion_point_ >= kCacheSize) 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) next_insertion_point_ = 0; 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// ImageDataCache -------------------------------------------------------------- 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class ImageDataCache { 2215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageDataCache() : weak_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {} 2235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ~ImageDataCache() {} 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static ImageDataCache* GetInstance(); 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Retrieves an image data from the cache of the specified size and format if 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // one exists. If one doesn't exist, this will return a null refptr. 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_refptr<ImageData> Get(PP_Instance instance, 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int width, int height, 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_ImageDataFormat format); 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Adds the given image data to the cache. There should be no plugin 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // references to it. This may delete an older item from the cache. 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void Add(ImageData* image_data); 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Notification from the renderer that the given image data is usable. 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void ImageDataUsable(ImageData* image_data); 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) void DidDeleteInstance(PP_Instance instance); 2412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) friend struct LeakySingletonTraits<ImageDataCache>; 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Timer callback to expire entries for the given instance. 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void OnTimer(PP_Instance instance); 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This class does timer calls and we don't want to run these outside of the 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // scope of the object. Technically, since this class is a leaked static, 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // this will never happen and this factory is unnecessary. However, it's 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // probably better not to make assumptions about the lifetime of this class. 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::WeakPtrFactory<ImageDataCache> weak_factory_; 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) typedef std::map<PP_Instance, ImageDataInstanceCache> CacheMap; 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CacheMap cache_; 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(ImageDataCache); 2585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 2595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 2615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ImageDataCache* ImageDataCache::GetInstance() { 2625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Singleton<ImageDataCache, 2635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LeakySingletonTraits<ImageDataCache> >::get(); 2645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)scoped_refptr<ImageData> ImageDataCache::Get(PP_Instance instance, 2675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int width, int height, 2685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_ImageDataFormat format) { 2695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CacheMap::iterator found = cache_.find(instance); 2705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (found == cache_.end()) 2715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return scoped_refptr<ImageData>(); 2725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return found->second.Get(width, height, format); 2735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ImageDataCache::Add(ImageData* image_data) { 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) cache_[image_data->pp_instance()].Add(image_data); 2775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Schedule a timer to invalidate this entry. 2795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MessageLoop::current()->PostDelayedTask( 2805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FROM_HERE, 2812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) RunWhileLocked(base::Bind(&ImageDataCache::OnTimer, 2822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) weak_factory_.GetWeakPtr(), 2832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) image_data->pp_instance())), 2845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeDelta::FromSeconds(kMaxAgeSeconds)); 2855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ImageDataCache::ImageDataUsable(ImageData* image_data) { 2885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CacheMap::iterator found = cache_.find(image_data->pp_instance()); 2895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (found != cache_.end()) 2905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) found->second.ImageDataUsable(image_data); 2915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void ImageDataCache::DidDeleteInstance(PP_Instance instance) { 2942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) cache_.erase(instance); 2952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 2962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ImageDataCache::OnTimer(PP_Instance instance) { 2985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CacheMap::iterator found = cache_.find(instance); 2995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (found == cache_.end()) 3005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 3015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!found->second.ExpireEntries()) { 3025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // There are no more entries for this instance, remove it from the cache. 3035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) cache_.erase(found); 3045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace 3085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// ImageData ------------------------------------------------------------------- 3105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if !defined(OS_NACL) 3125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ImageData::ImageData(const HostResource& resource, 3135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const PP_ImageDataDesc& desc, 3145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageHandle handle) 3155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Resource(OBJECT_IS_PROXY, resource), 3165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) desc_(desc), 3175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) used_in_replace_contents_(false) { 3185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_WIN) 3195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) transport_dib_.reset(TransportDIB::CreateWithHandle(handle)); 3205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 3215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) transport_dib_.reset(TransportDIB::Map(handle)); 3225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // defined(OS_WIN) 3235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else // !defined(OS_NACL) 3255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ImageData::ImageData(const HostResource& resource, 3275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const PP_ImageDataDesc& desc, 3285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const base::SharedMemoryHandle& handle) 3295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Resource(OBJECT_IS_PROXY, resource), 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) desc_(desc), 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) shm_(handle, false /* read_only */), 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_(desc.size.width * desc.size.height * 4), 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) map_count_(0), 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) used_in_replace_contents_(false) { 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // else, !defined(OS_NACL) 3375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ImageData::~ImageData() { 3395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PPB_ImageData_API* ImageData::AsPPB_ImageData_API() { 3425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return this; 3435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ImageData::LastPluginRefWasDeleted() { 3465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The plugin no longer needs this ImageData, add it to our cache if it's 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // been used in a ReplaceContents. These are the ImageDatas that the renderer 3485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // will send back ImageDataUsable messages for. 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (used_in_replace_contents_) 3505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageDataCache::GetInstance()->Add(this); 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void ImageData::InstanceWasDeleted() { 3542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ImageDataCache::GetInstance()->DidDeleteInstance(pp_instance()); 3552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PP_Bool ImageData::Describe(PP_ImageDataDesc* desc) { 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) memcpy(desc, &desc_, sizeof(PP_ImageDataDesc)); 3595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return PP_TRUE; 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void* ImageData::Map() { 3635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_NACL) 3645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (map_count_++ == 0) 3655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) shm_.Map(size_); 3665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return shm_.memory(); 3675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!mapped_canvas_.get()) { 3695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) mapped_canvas_.reset(transport_dib_->GetPlatformCanvas(desc_.size.width, 3705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) desc_.size.height)); 3715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!mapped_canvas_.get()) 3725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 3735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const SkBitmap& bitmap = 3755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) skia::GetTopDevice(*mapped_canvas_)->accessBitmap(true); 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bitmap.lockPixels(); 3785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return bitmap.getAddr(0, 0); 3795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ImageData::Unmap() { 3835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_NACL) 3845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (--map_count_ == 0) 3855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) shm_.Unmap(); 3865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 3875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(brettw) have a way to unmap a TransportDIB. Currently this isn't 3885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // possible since deleting the TransportDIB also frees all the handles. 3895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We need to add a method to TransportDIB to release the handles. 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 3915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int32_t ImageData::GetSharedMemory(int* /* handle */, 3945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32_t* /* byte_count */) { 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Not supported in the proxy (this method is for actually implementing the 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // proxy in the host). 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return PP_ERROR_NOACCESS; 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)SkCanvas* ImageData::GetPlatformCanvas() { 4015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_NACL) 4025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; // No canvas in NaCl. 4035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 4045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return mapped_canvas_.get(); 4055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)SkCanvas* ImageData::GetCanvas() { 4095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_NACL) 4105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; // No canvas in NaCl. 4115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 4125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return mapped_canvas_.get(); 4135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void ImageData::SetUsedInReplaceContents() { 4172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) used_in_replace_contents_ = true; 4182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 4192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ImageData::RecycleToPlugin(bool zero_contents) { 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) used_in_replace_contents_ = false; 4225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (zero_contents) { 4235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void* data = Map(); 4245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) memset(data, 0, desc_.stride * desc_.size.height); 4255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Unmap(); 4265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if !defined(OS_NACL) 4305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 4315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ImageHandle ImageData::NullHandle() { 4325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_WIN) 4335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 4345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#elif defined(OS_MACOSX) || defined(OS_ANDROID) 4355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ImageHandle(); 4365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 4375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 4385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ImageHandle ImageData::HandleFromInt(int32_t i) { 4425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_WIN) 4435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return reinterpret_cast<ImageHandle>(i); 4445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#elif defined(OS_MACOSX) || defined(OS_ANDROID) 4455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ImageHandle(i, false); 4465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 4475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return static_cast<ImageHandle>(i); 4485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // !defined(OS_NACL) 4515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// PPB_ImageData_Proxy --------------------------------------------------------- 4535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PPB_ImageData_Proxy::PPB_ImageData_Proxy(Dispatcher* dispatcher) 4555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : InterfaceProxy(dispatcher) { 4565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PPB_ImageData_Proxy::~PPB_ImageData_Proxy() { 4595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 4625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PP_Resource PPB_ImageData_Proxy::CreateProxyResource(PP_Instance instance, 4635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_ImageDataFormat format, 4645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const PP_Size& size, 4655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_Bool init_to_zero) { 4665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance); 4675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!dispatcher) 4685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 4695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Check the cache. 4715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_refptr<ImageData> cached_image_data = 4725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageDataCache::GetInstance()->Get(instance, size.width, size.height, 4735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) format); 4745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (cached_image_data.get()) { 4755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We have one we can re-use rather than allocating a new one. 4765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) cached_image_data->RecycleToPlugin(PP_ToBool(init_to_zero)); 4775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return cached_image_data->GetReference(); 4785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HostResource result; 4815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string image_data_desc; 4825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_NACL) 4835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ppapi::proxy::SerializedHandle image_handle_wrapper; 4845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) dispatcher->Send(new PpapiHostMsg_PPBImageData_CreateNaCl( 4855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) kApiID, instance, format, size, init_to_zero, 4865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) &result, &image_data_desc, &image_handle_wrapper)); 4875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!image_handle_wrapper.is_shmem()) 4885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 4895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::SharedMemoryHandle image_handle = image_handle_wrapper.shmem(); 4905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 4915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageHandle image_handle = ImageData::NullHandle(); 4925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) dispatcher->Send(new PpapiHostMsg_PPBImageData_Create( 4935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) kApiID, instance, format, size, init_to_zero, 4945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) &result, &image_data_desc, &image_handle)); 4955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (result.is_null() || image_data_desc.size() != sizeof(PP_ImageDataDesc)) 4985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 4995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We serialize the PP_ImageDataDesc just by copying to a string. 5015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_ImageDataDesc desc; 5025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) memcpy(&desc, image_data_desc.data(), sizeof(PP_ImageDataDesc)); 5035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (new ImageData(result, desc, image_handle))->GetReference(); 5055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool PPB_ImageData_Proxy::OnMessageReceived(const IPC::Message& msg) { 5085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool handled = true; 5095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_BEGIN_MESSAGE_MAP(PPB_ImageData_Proxy, msg) 5102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#if !defined(OS_NACL) 5115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBImageData_Create, OnHostMsgCreate) 5125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBImageData_CreateNaCl, 5135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OnHostMsgCreateNaCl) 5142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#endif 5155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(PpapiMsg_PPBImageData_NotifyUnusedImageData, 5165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OnPluginMsgNotifyUnusedImageData) 5175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_UNHANDLED(handled = false) 5195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_END_MESSAGE_MAP() 5205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return handled; 5215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#if !defined(OS_NACL) 5245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void PPB_ImageData_Proxy::OnHostMsgCreate(PP_Instance instance, 5255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int32_t format, 5265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const PP_Size& size, 5275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_Bool init_to_zero, 5285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HostResource* result, 5295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string* image_data_desc, 5305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageHandle* result_image_handle) { 5315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *result_image_handle = ImageData::NullHandle(); 5325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thunk::EnterResourceCreation enter(instance); 5345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (enter.failed()) 5355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 5365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_Resource resource = enter.functions()->CreateImageData( 5385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) instance, static_cast<PP_ImageDataFormat>(format), size, init_to_zero); 5395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!resource) 5405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 5415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) result->SetHostResource(instance, resource); 5425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Get the description, it's just serialized as a string. 5445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thunk::EnterResourceNoLock<PPB_ImageData_API> enter_resource(resource, false); 5455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_ImageDataDesc desc; 5465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (enter_resource.object()->Describe(&desc) == PP_TRUE) { 5475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) image_data_desc->resize(sizeof(PP_ImageDataDesc)); 5485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) memcpy(&(*image_data_desc)[0], &desc, sizeof(PP_ImageDataDesc)); 5495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Get the shared memory handle. 5525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32_t byte_count = 0; 5535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int32_t handle = 0; 5545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (enter_resource.object()->GetSharedMemory(&handle, &byte_count) == PP_OK) { 5555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_WIN) 5565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageHandle ih = ImageData::HandleFromInt(handle); 5575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *result_image_handle = dispatcher()->ShareHandleWithRemote(ih, false); 5585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 5595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *result_image_handle = ImageData::HandleFromInt(handle); 5605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // defined(OS_WIN) 5615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void PPB_ImageData_Proxy::OnHostMsgCreateNaCl( 5655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_Instance instance, 5665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int32_t format, 5675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const PP_Size& size, 5685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_Bool init_to_zero, 5695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HostResource* result, 5705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string* image_data_desc, 5715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ppapi::proxy::SerializedHandle* result_image_handle) { 5725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) result_image_handle->set_null_shmem(); 5735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HostDispatcher* dispatcher = HostDispatcher::GetForInstance(instance); 5745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!dispatcher) 5755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 5765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thunk::EnterResourceCreation enter(instance); 5785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (enter.failed()) 5795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 5805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_Resource resource = enter.functions()->CreateImageDataNaCl( 5825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) instance, static_cast<PP_ImageDataFormat>(format), size, init_to_zero); 5835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!resource) 5845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 5855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) result->SetHostResource(instance, resource); 5865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Get the description, it's just serialized as a string. 5885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thunk::EnterResourceNoLock<PPB_ImageData_API> enter_resource(resource, false); 5895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (enter_resource.failed()) 5905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 5915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_ImageDataDesc desc; 5925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (enter_resource.object()->Describe(&desc) == PP_TRUE) { 5935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) image_data_desc->resize(sizeof(PP_ImageDataDesc)); 5945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) memcpy(&(*image_data_desc)[0], &desc, sizeof(PP_ImageDataDesc)); 5955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int local_fd; 5975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32_t byte_count; 5985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (enter_resource.object()->GetSharedMemory(&local_fd, &byte_count) != PP_OK) 5995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 6005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(dmichael): Change trusted interface to return a PP_FileHandle, those 6015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // casts are ugly. 6025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::PlatformFile platform_file = 6035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_WIN) 6045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) reinterpret_cast<HANDLE>(static_cast<intptr_t>(local_fd)); 6055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#elif defined(OS_POSIX) 6065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) local_fd; 6075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 6085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) #error Not implemented. 6095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // defined(OS_WIN) 6105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) result_image_handle->set_shmem( 6115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) dispatcher->ShareHandleWithRemote(platform_file, false), 6125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) byte_count); 6135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 6142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#endif // !defined(OS_NACL) 6155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void PPB_ImageData_Proxy::OnPluginMsgNotifyUnusedImageData( 6175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const HostResource& old_image_data) { 6185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PluginGlobals* plugin_globals = PluginGlobals::Get(); 6195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!plugin_globals) 6205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; // This may happen if the plugin is maliciously sending this 6215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // message to the renderer. 6225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EnterPluginFromHostResource<PPB_ImageData_API> enter(old_image_data); 6245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (enter.succeeded()) { 6255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageData* image_data = static_cast<ImageData*>(enter.object()); 6265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageDataCache::GetInstance()->ImageDataUsable(image_data); 6275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The renderer sent us a reference with the message. If the image data was 6305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // still cached in our process, the proxy still holds a reference so we can 6315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // remove the one the renderer just sent is. If the proxy no longer holds a 6325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // reference, we released everything and we should also release the one the 6335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // renderer just sent us. 6345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) dispatcher()->Send(new PpapiHostMsg_PPBCore_ReleaseResource( 6355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) API_ID_PPB_CORE, old_image_data)); 6365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 6375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace proxy 6395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace ppapi 640