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// Copyright (c) 2012 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/renderer/pepper/pepper_platform_image_2d_impl.h"
#include "build/build_config.h"
#include "content/common/view_messages.h"
#include "content/renderer/render_thread_impl.h"
#include "ui/surface/transport_dib.h"
namespace content {
PepperPlatformImage2DImpl::PepperPlatformImage2DImpl(int width,
int height,
TransportDIB* dib)
: width_(width),
height_(height),
dib_(dib) {
}
// On Mac, we have to tell the browser to free the transport DIB.
PepperPlatformImage2DImpl::~PepperPlatformImage2DImpl() {
#if defined(OS_MACOSX)
if (dib_.get()) {
RenderThreadImpl::current()->Send(
new ViewHostMsg_FreeTransportDIB(dib_->id()));
}
#endif
}
// static
PepperPlatformImage2DImpl* PepperPlatformImage2DImpl::Create(int width,
int height) {
uint32 buffer_size = width * height * 4;
// Allocate the transport DIB and the PlatformCanvas pointing to it.
#if defined(OS_MACOSX)
// On the Mac, shared memory has to be created in the browser in order to
// work in the sandbox. Do this by sending a message to the browser
// requesting a TransportDIB (see also
// chrome/renderer/webplugin_delegate_proxy.cc, method
// WebPluginDelegateProxy::CreateBitmap() for similar code). The TransportDIB
// is cached in the browser, and is freed (in typical cases) by the
// PepperPlatformImage2DImpl's destructor.
TransportDIB::Handle dib_handle;
IPC::Message* msg = new ViewHostMsg_AllocTransportDIB(buffer_size,
true,
&dib_handle);
if (!RenderThreadImpl::current()->Send(msg))
return NULL;
if (!TransportDIB::is_valid_handle(dib_handle))
return NULL;
TransportDIB* dib = TransportDIB::Map(dib_handle);
#else
static int next_dib_id = 0;
TransportDIB* dib = TransportDIB::Create(buffer_size, next_dib_id++);
if (!dib)
return NULL;
#endif
return new PepperPlatformImage2DImpl(width, height, dib);
}
skia::PlatformCanvas* PepperPlatformImage2DImpl::Map() {
return dib_->GetPlatformCanvas(width_, height_);
}
intptr_t PepperPlatformImage2DImpl::GetSharedMemoryHandle(
uint32* byte_count) const {
*byte_count = dib_->size();
#if defined(OS_WIN)
return reinterpret_cast<intptr_t>(dib_->handle());
#elif defined(OS_MACOSX) || defined(OS_ANDROID)
return static_cast<intptr_t>(dib_->handle().fd);
#elif defined(OS_POSIX)
return static_cast<intptr_t>(dib_->handle());
#endif
}
TransportDIB* PepperPlatformImage2DImpl::GetTransportDIB() const {
return dib_.get();
}
} // namespace content
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