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Bug 1490415 - prevent creating a GPUVideoTextureHost with a null wrapped texture; r=sotaro

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Differential Revision: https://phabricator.services.mozilla.com/D5563
This commit is contained in:
Alex Gaynor
2018-09-12 00:17:10 +00:00
parent dfef5d66ac
commit 4f11cff232
3 changed files with 23 additions and 5 deletions
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17
gfx/layers/composite/GPUVideoTextureHost.cpp
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@@ -13,11 +13,11 @@ namespace mozilla {
namespace layers {
GPUVideoTextureHost::GPUVideoTextureHost(TextureFlags aFlags,
const SurfaceDescriptorGPUVideo& aDescriptor)
TextureHost* aWrappedTextureHost)
: TextureHost(aFlags)
, mWrappedTextureHost(aWrappedTextureHost)
{
MOZ_COUNT_CTOR(GPUVideoTextureHost);
mWrappedTextureHost = VideoBridgeParent::GetSingleton()->LookupTexture(aDescriptor.handle());
}
GPUVideoTextureHost::~GPUVideoTextureHost()
@@ -25,6 +25,19 @@ GPUVideoTextureHost::~GPUVideoTextureHost()
MOZ_COUNT_DTOR(GPUVideoTextureHost);
}
GPUVideoTextureHost*
GPUVideoTextureHost::CreateFromDescriptor(
TextureFlags aFlags,
const SurfaceDescriptorGPUVideo& aDescriptor)
{
TextureHost* wrappedTextureHost =
VideoBridgeParent::GetSingleton()->LookupTexture(aDescriptor.handle());
if (!wrappedTextureHost) {
return nullptr;
}
return new GPUVideoTextureHost(aFlags, wrappedTextureHost);
}
bool
GPUVideoTextureHost::Lock()
{