Copy NV12 picture buffers on demand on the main thread.

media/base/media_switches.cc

 // Copyright (c) 2012 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 "media/base/media_switches.h"
 #include "base/command_line.h"
 #include "build/build_config.h"
 #include "ppapi/features/features.h"
 
 namespace switches {
@@ skipping 259 matching lines @@
     "MediaDrmPersistentLicense", base::FEATURE_DISABLED_BY_DEFAULT};
 
 #endif
 
 #if defined(OS_WIN)
 // Enables video decode acceleration using the D3D11 video decoder api.
 // This is completely insecure - DO NOT USE except for testing.
 const base::Feature kD3D11VideoDecoding{"D3D11VideoDecoding",
                                         base::FEATURE_DISABLED_BY_DEFAULT};
 
+// Does NV12->NV12 video copy on the main thread right before the texture's
+// used by GL.
+const base::Feature kDelayCopyNV12Textures{"DelayCopyNV12Textures",
+                                           base::FEATURE_ENABLED_BY_DEFAULT};
+
 // Enables H264 HW encode acceleration using Media Foundation for Windows.
 const base::Feature kMediaFoundationH264Encoding{
     "MediaFoundationH264Encoding", base::FEATURE_ENABLED_BY_DEFAULT};
 #endif  // defined(OS_WIN)
 
 std::string GetEffectiveAutoplayPolicy(const base::CommandLine& command_line) {
   // |kIgnoreAutoplayRestrictionsForTests| overrides all other settings.
   if (command_line.HasSwitch(switches::kIgnoreAutoplayRestrictionsForTests))
     return switches::autoplay::kNoUserGestureRequiredPolicy;
 
   // Return the autoplay policy set in the command line, if any.
   if (command_line.HasSwitch(switches::kAutoplayPolicy))
     return command_line.GetSwitchValueASCII(switches::kAutoplayPolicy);
 
 // The default value is platform dependent.
 #if defined(OS_ANDROID)
   return switches::autoplay::kUserGestureRequiredPolicy;
 #else
   return switches::autoplay::kNoUserGestureRequiredPolicy;
 #endif
 }
 
 }  // namespace media