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Bug 1256572 - use SourceSurfaceRawData with custom deallocator in imgFrame. r=bas

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We can prevent the memory copy in GuaranteePersistance() during painting.
This commit is contained in:
JerryShih 2016-05-05 07:30:00 +02:00
parent cadb8c6cb7
commit 325dfdc8dd
1 changed files with 5 additions and 4 deletions
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9
image/imgFrame.cpp
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@ -33,8 +33,6 @@ using namespace gfx;
namespace image {
static UserDataKey kVolatileBuffer;
static void
VolatileBufferRelease(void* vbuf)
{
@ -58,14 +56,17 @@ CreateLockedSurface(VolatileBuffer* vbuf,
MOZ_ASSERT(!vbufptr->WasBufferPurged(), "Expected image data!");
int32_t stride = VolatileSurfaceStride(size, format);
// The VolatileBufferPtr is held by this DataSourceSurface.
RefPtr<DataSourceSurface> surf =
Factory::CreateWrappingDataSourceSurface(*vbufptr, stride, size, format);
Factory::CreateWrappingDataSourceSurface(*vbufptr, stride, size, format,
&VolatileBufferRelease,
static_cast<void*>(vbufptr));
if (!surf) {
delete vbufptr;
return nullptr;
}
surf->AddUserData(&kVolatileBuffer, vbufptr, VolatileBufferRelease);
return surf.forget();
}