#include "content/common/gpu/client/gpu_memory_buffer_impl_shared_memory.h"
+#include "base/bind.h"
#include "base/numerics/safe_math.h"
#include "ui/gl/gl_bindings.h"
namespace content {
+namespace {
+
+void Noop() {
+}
+
+} // namespace
GpuMemoryBufferImplSharedMemory::GpuMemoryBufferImplSharedMemory(
const gfx::Size& size,
- unsigned internalformat)
- : GpuMemoryBufferImpl(size, internalformat) {
+ unsigned internalformat,
+ const DestructionCallback& callback,
+ scoped_ptr<base::SharedMemory> shared_memory)
+ : GpuMemoryBufferImpl(size, internalformat, callback),
+ shared_memory_(shared_memory.Pass()) {
}
GpuMemoryBufferImplSharedMemory::~GpuMemoryBufferImplSharedMemory() {
}
// static
-void GpuMemoryBufferImplSharedMemory::AllocateSharedMemoryForChildProcess(
+void GpuMemoryBufferImplSharedMemory::Create(const gfx::Size& size,
+ unsigned internalformat,
+ unsigned usage,
+ const CreationCallback& callback) {
+ DCHECK(GpuMemoryBufferImplSharedMemory::IsConfigurationSupported(
+ size, internalformat, usage));
+
+ scoped_ptr<base::SharedMemory> shared_memory(new base::SharedMemory());
+ if (!shared_memory->CreateAnonymous(size.GetArea() *
+ BytesPerPixel(internalformat))) {
+ callback.Run(scoped_ptr<GpuMemoryBufferImpl>());
+ return;
+ }
+
+ callback.Run(
+ make_scoped_ptr<GpuMemoryBufferImpl>(new GpuMemoryBufferImplSharedMemory(
+ size, internalformat, base::Bind(&Noop), shared_memory.Pass())));
+}
+
+// static
+void GpuMemoryBufferImplSharedMemory::AllocateForChildProcess(
const gfx::Size& size,
unsigned internalformat,
base::ProcessHandle child_process,
const AllocationCallback& callback) {
DCHECK(IsLayoutSupported(size, internalformat));
- gfx::GpuMemoryBufferHandle handle;
base::SharedMemory shared_memory;
if (!shared_memory.CreateAnonymous(size.GetArea() *
BytesPerPixel(internalformat))) {
- handle.type = gfx::EMPTY_BUFFER;
+ callback.Run(gfx::GpuMemoryBufferHandle());
return;
}
+ gfx::GpuMemoryBufferHandle handle;
handle.type = gfx::SHARED_MEMORY_BUFFER;
shared_memory.GiveToProcess(child_process, &handle.handle);
callback.Run(handle);
}
// static
+scoped_ptr<GpuMemoryBufferImpl>
+GpuMemoryBufferImplSharedMemory::CreateFromHandle(
+ const gfx::GpuMemoryBufferHandle& handle,
+ const gfx::Size& size,
+ unsigned internalformat,
+ const DestructionCallback& callback) {
+ DCHECK(IsLayoutSupported(size, internalformat));
+
+ if (!base::SharedMemory::IsHandleValid(handle.handle))
+ return scoped_ptr<GpuMemoryBufferImpl>();
+
+ return make_scoped_ptr<GpuMemoryBufferImpl>(
+ new GpuMemoryBufferImplSharedMemory(
+ size,
+ internalformat,
+ callback,
+ make_scoped_ptr(new base::SharedMemory(handle.handle, false))));
+}
+
+// static
bool GpuMemoryBufferImplSharedMemory::IsLayoutSupported(
const gfx::Size& size,
unsigned internalformat) {
return IsLayoutSupported(size, internalformat) && IsUsageSupported(usage);
}
-bool GpuMemoryBufferImplSharedMemory::Initialize() {
- DCHECK(IsLayoutSupported(size_, internalformat_));
- scoped_ptr<base::SharedMemory> shared_memory(new base::SharedMemory());
- if (!shared_memory->CreateAnonymous(size_.GetArea() *
- BytesPerPixel(internalformat_)))
- return false;
- shared_memory_ = shared_memory.Pass();
- DCHECK(!shared_memory_->memory());
- return true;
-}
-
-bool GpuMemoryBufferImplSharedMemory::InitializeFromHandle(
- const gfx::GpuMemoryBufferHandle& handle) {
- DCHECK(IsLayoutSupported(size_, internalformat_));
- if (!base::SharedMemory::IsHandleValid(handle.handle))
- return false;
- shared_memory_.reset(new base::SharedMemory(handle.handle, false));
- DCHECK(!shared_memory_->memory());
- return true;
-}
-
void* GpuMemoryBufferImplSharedMemory::Map() {
DCHECK(!mapped_);
if (!shared_memory_->Map(size_.GetArea() * BytesPerPixel(internalformat_)))