media: Optimize HW Video to 2D Canvas copy.

content/renderer/render_frame_impl.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 
 #include "base/auto_reset.h"
@@ skipping 135 matching lines @@
 
 #if defined(OS_ANDROID)
 #include <cpu-features.h>
 
 #include "content/common/gpu/client/context_provider_command_buffer.h"
 #include "content/renderer/android/synchronous_compositor_factory.h"
 #include "content/renderer/java/gin_java_bridge_dispatcher.h"
 #include "content/renderer/media/android/renderer_media_player_manager.h"
 #include "content/renderer/media/android/stream_texture_factory_impl.h"
 #include "content/renderer/media/android/webmediaplayer_android.h"
+#else
+#include "webkit/common/gpu/context_provider_web_context.h"
 #endif
 
 #if defined(ENABLE_PEPPER_CDMS)
 #include "content/renderer/media/crypto/pepper_cdm_wrapper_impl.h"
 #elif defined(ENABLE_BROWSER_CDMS)
 #include "content/renderer/media/crypto/renderer_cdm_manager.h"
 #endif
 
 using blink::WebContextMenuData;
 using blink::WebData;
@@ skipping 75 matching lines @@
     if (urls[i] != GURL(kSwappedOutURL))
       result->push_back(urls[i]);
     else
       result->push_back(blank_url);
   }
 }
 
 // Returns the original request url. If there is no redirect, the original
 // url is the same as ds->request()->url(). If the WebDataSource belongs to a
 // frame was loaded by loadData, the original url will be ds->unreachableURL()
-static GURL GetOriginalRequestURL(WebDataSource* ds) {
+GURL GetOriginalRequestURL(WebDataSource* ds) {
   // WebDataSource has unreachable URL means that the frame is loaded through
   // blink::WebFrame::loadData(), and the base URL will be in the redirect
   // chain. However, we never visited the baseURL. So in this case, we should
   // use the unreachable URL as the original URL.
   if (ds->hasUnreachableURL())
     return ds->unreachableURL();
 
   std::vector<GURL> redirects;
   GetRedirectChain(ds, &redirects);
   if (!redirects.empty())
     return redirects.at(0);
 
   return ds->originalRequest().url();
 }
 
-NOINLINE static void CrashIntentionally() {
+NOINLINE void CrashIntentionally() {
   // NOTE(shess): Crash directly rather than using NOTREACHED() so
   // that the signature is easier to triage in crash reports.
   volatile int* zero = NULL;
   *zero = 0;
 }
 
 #if defined(ADDRESS_SANITIZER) || defined(SYZYASAN)
-NOINLINE static void MaybeTriggerAsanError(const GURL& url) {
+NOINLINE void MaybeTriggerAsanError(const GURL& url) {
   // NOTE(rogerm): We intentionally perform an invalid heap access here in
   //     order to trigger an Address Sanitizer (ASAN) error report.
   const char kCrashDomain[] = "crash";
   const char kHeapOverflow[] = "/heap-overflow";
   const char kHeapUnderflow[] = "/heap-underflow";
   const char kUseAfterFree[] = "/use-after-free";
 #if defined(SYZYASAN)
   const char kCorruptHeapBlock[] = "/corrupt-heap-block";
   const char kCorruptHeap[] = "/corrupt-heap";
 #endif
@@ skipping 14 matching lines @@
 #if defined(SYZYASAN)
   } else if (crash_type == kCorruptHeapBlock) {
     base::debug::AsanCorruptHeapBlock();
   } else if (crash_type == kCorruptHeap) {
     base::debug::AsanCorruptHeap();
 #endif
   }
 }
 #endif  // ADDRESS_SANITIZER || SYZYASAN
 
-static void MaybeHandleDebugURL(const GURL& url) {
+void MaybeHandleDebugURL(const GURL& url) {
   if (!url.SchemeIs(kChromeUIScheme))
     return;
   if (url == GURL(kChromeUICrashURL)) {
     CrashIntentionally();
   } else if (url == GURL(kChromeUIDumpURL)) {
     // This URL will only correctly create a crash dump file if content is
     // hosted in a process that has correctly called
     // base::debug::SetDumpWithoutCrashingFunction.  Refer to the documentation
     // of base::debug::DumpWithoutCrashing for more details.
     base::debug::DumpWithoutCrashing();
   } else if (url == GURL(kChromeUIKillURL)) {
     base::KillProcess(base::GetCurrentProcessHandle(), 1, false);
   } else if (url == GURL(kChromeUIHangURL)) {
     for (;;) {
       base::PlatformThread::Sleep(base::TimeDelta::FromSeconds(1));
     }
   } else if (url == GURL(kChromeUIShorthangURL)) {
     base::PlatformThread::Sleep(base::TimeDelta::FromSeconds(20));
   }
 
 #if defined(ADDRESS_SANITIZER) || defined(SYZYASAN)
   MaybeTriggerAsanError(url);
 #endif  // ADDRESS_SANITIZER || SYZYASAN
 }
 
 // Returns false unless this is a top-level navigation.
-static bool IsTopLevelNavigation(WebFrame* frame) {
+bool IsTopLevelNavigation(WebFrame* frame) {
   return frame->parent() == NULL;
 }
 
 // Returns false unless this is a top-level navigation that crosses origins.
-static bool IsNonLocalTopLevelNavigation(const GURL& url,
-                                         WebFrame* frame,
-                                         WebNavigationType type,
-                                         bool is_form_post) {
+bool IsNonLocalTopLevelNavigation(const GURL& url,
+                                  WebFrame* frame,
+                                  WebNavigationType type,
+                                  bool is_form_post) {
   if (!IsTopLevelNavigation(frame))
     return false;
 
   // Navigations initiated within Webkit are not sent out to the external host
   // in the following cases.
   // 1. The url scheme is not http/https
   // 2. The origin of the url and the opener is the same in which case the
   //    opener relationship is maintained.
   // 3. Reloads/form submits/back forward navigations
   if (!url.SchemeIs(url::kHttpScheme) && !url.SchemeIs(url::kHttpsScheme))
@@ skipping 111 matching lines @@
     extra_data = &kEmptyData;
   CommonNavigationParams params;
   params.url = request.url();
   params.referrer = Referrer(
       GURL(request.httpHeaderField(WebString::fromUTF8("Referer")).latin1()),
       request.referrerPolicy());
   params.transition = extra_data->transition_type();
   return params;
 }
 
+#if !defined(OS_ANDROID)
+media::Context3DProvider GetSharedMainThreadContext3DProvider() {
+  cc::ContextProvider* provider =
+      RenderThreadImpl::current()->SharedMainThreadContextProvider().get();
+  if (!provider)
+    return {nullptr, nullptr};

[jamesr, 2014/11/13 20:39:16]

please don't use this initialization syntax

+  return {provider->ContextGL(), provider->GrContext()};
+}
+#endif
+
+RenderFrameImpl* (*g_create_render_frame_impl)(RenderViewImpl*,
+                                               int32) = nullptr;

[jamesr, 2014/11/13 20:39:16]

could you use a type alias to make this more readable?

+
 }  // namespace
 
-static RenderFrameImpl* (*g_create_render_frame_impl)(RenderViewImpl*, int32) =
-    NULL;
 
 // static
 RenderFrameImpl* RenderFrameImpl::Create(RenderViewImpl* render_view,
                                          int32 routing_id) {
   DCHECK(routing_id != MSG_ROUTING_NONE);
 
   if (g_create_render_frame_impl)
     return g_create_render_frame_impl(render_view, routing_id);
   else
     return new RenderFrameImpl(render_view, routing_id);
@@ skipping 1241 matching lines @@
 #if defined(OS_ANDROID)
   return CreateAndroidWebMediaPlayer(url, client, initial_cdm);
 #else
   RenderThreadImpl* render_thread = RenderThreadImpl::current();
   media::WebMediaPlayerParams params(
       base::Bind(&ContentRendererClient::DeferMediaLoad,
                  base::Unretained(GetContentClient()->renderer()),
                  static_cast<RenderFrame*>(this)),
       render_thread->GetAudioRendererMixerManager()->CreateInput(
           render_view_->routing_id_, routing_id_),
-      *render_thread->GetAudioHardwareConfig(),
-      new RenderMediaLog(),
+      *render_thread->GetAudioHardwareConfig(), new RenderMediaLog(),
       render_thread->GetGpuFactories(),
       render_thread->GetMediaThreadTaskRunner(),
       render_thread->compositor_message_loop_proxy(),
       base::Bind(&EncryptedMediaPlayerSupportImpl::Create),
-      initial_cdm);
+      base::Bind(&GetSharedMainThreadContext3DProvider), initial_cdm);
   return new media::WebMediaPlayerImpl(
       frame, client, weak_factory_.GetWeakPtr(), nullptr, params);
 #endif  // defined(OS_ANDROID)
 }
 
 blink::WebContentDecryptionModule*
 RenderFrameImpl::createContentDecryptionModule(
     blink::WebLocalFrame* frame,
     const blink::WebSecurityOrigin& security_origin,
     const blink::WebString& key_system) {
@@ skipping 2432 matching lines @@
 
 #if defined(ENABLE_BROWSER_CDMS)
 RendererCdmManager* RenderFrameImpl::GetCdmManager() {
   if (!cdm_manager_)
     cdm_manager_ = new RendererCdmManager(this);
   return cdm_manager_;
 }
 #endif  // defined(ENABLE_BROWSER_CDMS)
 
 }  // namespace content