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// Copyright 2014 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 "gpu/ipc/service/gpu_memory_buffer_factory_io_surface.h"
#include <vector>
#include "base/logging.h"
#include "gpu/GLES2/gl2extchromium.h"
#include "ui/gfx/buffer_format_util.h"
#include "ui/gfx/mac/io_surface.h"
#include "ui/gl/gl_image_io_surface.h"
namespace gpu {
GpuMemoryBufferFactoryIOSurface::GpuMemoryBufferFactoryIOSurface() {
}
GpuMemoryBufferFactoryIOSurface::~GpuMemoryBufferFactoryIOSurface() {
}
gfx::GpuMemoryBufferHandle
GpuMemoryBufferFactoryIOSurface::CreateGpuMemoryBuffer(
gfx::GpuMemoryBufferId id,
const gfx::Size& size,
gfx::BufferFormat format,
gfx::BufferUsage usage,
int client_id,
SurfaceHandle surface_handle) {
base::ScopedCFTypeRef<IOSurfaceRef> io_surface(
gfx::CreateIOSurface(size, format));
if (!io_surface)
return gfx::GpuMemoryBufferHandle();
// A GpuMemoryBuffer with client_id = 0 behaves like anonymous shared memory.
if (client_id != 0) {
base::AutoLock lock(io_surfaces_lock_);
IOSurfaceMapKey key(id, client_id);
DCHECK(io_surfaces_.find(key) == io_surfaces_.end());
io_surfaces_[key] = io_surface;
}
gfx::GpuMemoryBufferHandle handle;
handle.type = gfx::IO_SURFACE_BUFFER;
handle.id = id;
handle.mach_port.reset(IOSurfaceCreateMachPort(io_surface));
return handle;
}
void GpuMemoryBufferFactoryIOSurface::DestroyGpuMemoryBuffer(
gfx::GpuMemoryBufferId id,
int client_id) {
{
base::AutoLock lock(io_surfaces_lock_);
IOSurfaceMapKey key(id, client_id);
DCHECK(io_surfaces_.find(key) != io_surfaces_.end());
io_surfaces_.erase(key);
}
}
ImageFactory* GpuMemoryBufferFactoryIOSurface::AsImageFactory() {
return this;
}
scoped_refptr<gl::GLImage>
GpuMemoryBufferFactoryIOSurface::CreateImageForGpuMemoryBuffer(
const gfx::GpuMemoryBufferHandle& handle,
const gfx::Size& size,
gfx::BufferFormat format,
unsigned internalformat,
int client_id,
SurfaceHandle surface_handle) {
base::AutoLock lock(io_surfaces_lock_);
DCHECK_EQ(handle.type, gfx::IO_SURFACE_BUFFER);
IOSurfaceMapKey key(handle.id, client_id);
IOSurfaceMap::iterator it = io_surfaces_.find(key);
if (it == io_surfaces_.end())
return scoped_refptr<gl::GLImage>();
scoped_refptr<gl::GLImageIOSurface> image(
new gl::GLImageIOSurface(size, internalformat));
if (!image->Initialize(it->second.get(), handle.id, format))
return scoped_refptr<gl::GLImage>();
return image;
}
scoped_refptr<gl::GLImage>
GpuMemoryBufferFactoryIOSurface::CreateAnonymousImage(const gfx::Size& size,
gfx::BufferFormat format,
unsigned internalformat) {
// Note that the GpuMemoryBufferId and child id don't matter since the texture
// will never be directly exposed to other processes, only via a mailbox.
int gmb_id = 0;
int client_id = 0;
gfx::GpuMemoryBufferHandle handle = CreateGpuMemoryBuffer(
gfx::GpuMemoryBufferId(gmb_id), size, format, gfx::BufferUsage::SCANOUT,
client_id, gpu::kNullSurfaceHandle);
base::ScopedCFTypeRef<IOSurfaceRef> io_surface;
io_surface.reset(IOSurfaceLookupFromMachPort(handle.mach_port.get()));
DCHECK_NE(nullptr, io_surface.get());
scoped_refptr<gl::GLImageIOSurface> image(
new gl::GLImageIOSurface(size, internalformat));
if (!image->Initialize(io_surface.get(), handle.id, format))
return scoped_refptr<gl::GLImage>();
return image;
}
unsigned GpuMemoryBufferFactoryIOSurface::RequiredTextureType() {
return GL_TEXTURE_RECTANGLE_ARB;
}
bool GpuMemoryBufferFactoryIOSurface::SupportsFormatRGB() {
return false;
}
} // namespace gpu
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