gpu: Compositor management of GpuMemoryBuffer instances.

content/common/gpu/client/gpu_memory_buffer_impl_io_surface.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/common/gpu/client/gpu_memory_buffer_impl_io_surface.h"
 
 #include "base/atomic_sequence_num.h"
 #include "base/bind.h"
 #include "base/logging.h"
 #include "content/common/gpu/client/gpu_memory_buffer_factory_host.h"
 #include "ui/gl/gl_bindings.h"
 
 namespace content {
 namespace {
 
 base::StaticAtomicSequenceNumber g_next_buffer_id;
 
 void Noop() {
 }
 
 void GpuMemoryBufferCreated(
     const gfx::Size& size,
-    unsigned internalformat,
+    gfx::GpuMemoryBuffer::Format format,
     const GpuMemoryBufferImpl::CreationCallback& callback,
     const gfx::GpuMemoryBufferHandle& handle) {
   DCHECK_EQ(gfx::IO_SURFACE_BUFFER, handle.type);
 
   callback.Run(GpuMemoryBufferImplIOSurface::CreateFromHandle(
-      handle, size, internalformat, base::Bind(&Noop)));
+      handle, size, format, base::Bind(&Noop)));
 }
 
 void GpuMemoryBufferCreatedForChildProcess(
     const GpuMemoryBufferImpl::AllocationCallback& callback,
     const gfx::GpuMemoryBufferHandle& handle) {
   DCHECK_EQ(gfx::IO_SURFACE_BUFFER, handle.type);
 
   callback.Run(handle);
 }
 
 }  // namespace
 
 GpuMemoryBufferImplIOSurface::GpuMemoryBufferImplIOSurface(
     const gfx::Size& size,
-    unsigned internalformat,
+    Format format,
     const DestructionCallback& callback,
     IOSurfaceRef io_surface)
-    : GpuMemoryBufferImpl(size, internalformat, callback),
-      io_surface_(io_surface) {
+    : GpuMemoryBufferImpl(size, format, callback), io_surface_(io_surface) {
 }
 
 GpuMemoryBufferImplIOSurface::~GpuMemoryBufferImplIOSurface() {
 }
 
 // static
 void GpuMemoryBufferImplIOSurface::Create(const gfx::Size& size,
-                                          unsigned internalformat,
-                                          unsigned usage,
+                                          Format format,
                                           int client_id,
                                           const CreationCallback& callback) {
   gfx::GpuMemoryBufferHandle handle;
   handle.type = gfx::IO_SURFACE_BUFFER;
   handle.global_id.primary_id = g_next_buffer_id.GetNext();
   handle.global_id.secondary_id = client_id;
   GpuMemoryBufferFactoryHost::GetInstance()->CreateGpuMemoryBuffer(
       handle,
       size,
-      internalformat,
-      usage,
-      base::Bind(&GpuMemoryBufferCreated, size, internalformat, callback));
+      format,
+      MAP,
+      base::Bind(&GpuMemoryBufferCreated, size, format, callback));
 }
 
 // static
 void GpuMemoryBufferImplIOSurface::AllocateForChildProcess(
     const gfx::Size& size,
-    unsigned internalformat,
-    unsigned usage,
+    Format format,
     int child_client_id,
     const AllocationCallback& callback) {
   gfx::GpuMemoryBufferHandle handle;
   handle.type = gfx::IO_SURFACE_BUFFER;
   handle.global_id.primary_id = g_next_buffer_id.GetNext();
   handle.global_id.secondary_id = child_client_id;
   GpuMemoryBufferFactoryHost::GetInstance()->CreateGpuMemoryBuffer(
       handle,
       size,
-      internalformat,
-      usage,
+      format,
+      MAP,
       base::Bind(&GpuMemoryBufferCreatedForChildProcess, callback));
 }
 
 // static
 scoped_ptr<GpuMemoryBufferImpl> GpuMemoryBufferImplIOSurface::CreateFromHandle(
     const gfx::GpuMemoryBufferHandle& handle,
     const gfx::Size& size,
-    unsigned internalformat,
+    Format format,
     const DestructionCallback& callback) {
-  DCHECK(IsFormatSupported(internalformat));
+  DCHECK(IsFormatSupported(format));
 
   base::ScopedCFTypeRef<IOSurfaceRef> io_surface(
       IOSurfaceLookup(handle.io_surface_id));
   if (!io_surface)
     return scoped_ptr<GpuMemoryBufferImpl>();
 
   return make_scoped_ptr<GpuMemoryBufferImpl>(new GpuMemoryBufferImplIOSurface(
-      size, internalformat, callback, io_surface.get()));
+      size, format, callback, io_surface.get()));
 }
 
 // static
-bool GpuMemoryBufferImplIOSurface::IsFormatSupported(unsigned internalformat) {
-  switch (internalformat) {
-    case GL_BGRA8_EXT:
+bool GpuMemoryBufferImplIOSurface::IsFormatSupported(Format format) {
+  switch (format) {
+    case BGRA_8888:
       return true;
-    default:
+    case RGBA_8888:
+    case RGBX_8888:
       return false;
   }
+
+  NOTREACHED();
+  return false;
 }
 
 // static
-bool GpuMemoryBufferImplIOSurface::IsUsageSupported(unsigned usage) {
+bool GpuMemoryBufferImplIOSurface::IsUsageSupported(Usage usage) {
   switch (usage) {
-    case GL_IMAGE_MAP_CHROMIUM:
+    case MAP:
       return true;
-    default:
+    case SCANOUT:
       return false;
   }
+
+  NOTREACHED();
+  return false;
 }
 
 // static
-bool GpuMemoryBufferImplIOSurface::IsConfigurationSupported(
-    unsigned internalformat,
-    unsigned usage) {
-  return IsFormatSupported(internalformat) && IsUsageSupported(usage);
+bool GpuMemoryBufferImplIOSurface::IsConfigurationSupported(Format format,
+                                                            Usage usage) {
+  return IsFormatSupported(format) && IsUsageSupported(usage);
 }
 
 // static
-uint32 GpuMemoryBufferImplIOSurface::PixelFormat(unsigned internalformat) {
-  switch (internalformat) {
-    case GL_BGRA8_EXT:
+uint32 GpuMemoryBufferImplIOSurface::PixelFormat(Format format) {
+  switch (format) {
+    case BGRA_8888:
       return 'BGRA';
-    default:
+    case RGBA_8888:
+    case RGBX_8888:
       NOTREACHED();
       return 0;
   }
+
+  NOTREACHED();
+  return 0;
 }
 
 void* GpuMemoryBufferImplIOSurface::Map() {
   DCHECK(!mapped_);
   IOSurfaceLock(io_surface_, 0, NULL);
   mapped_ = true;
   return IOSurfaceGetBaseAddress(io_surface_);
 }
 
 void GpuMemoryBufferImplIOSurface::Unmap() {
   DCHECK(mapped_);
   IOSurfaceUnlock(io_surface_, 0, NULL);
   mapped_ = false;
 }
 
 uint32 GpuMemoryBufferImplIOSurface::GetStride() const {
   return IOSurfaceGetBytesPerRow(io_surface_);
 }
 
 gfx::GpuMemoryBufferHandle GpuMemoryBufferImplIOSurface::GetHandle() const {
   gfx::GpuMemoryBufferHandle handle;
   handle.type = gfx::IO_SURFACE_BUFFER;
   handle.io_surface_id = IOSurfaceGetID(io_surface_);
   return handle;
 }
 
 }  // namespace content