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// Copyright (c) 2011 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 "ppapi/proxy/ppb_image_data_proxy.h"
#include <string.h> // For memcpy
#include <vector>
#include "base/logging.h"
#include "build/build_config.h"
#include "ppapi/c/pp_completion_callback.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/c/pp_resource.h"
#include "ppapi/proxy/plugin_dispatcher.h"
#include "ppapi/proxy/plugin_resource_tracker.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/shared_impl/host_resource.h"
#include "ppapi/shared_impl/resource.h"
#include "ppapi/thunk/thunk.h"
#include "skia/ext/platform_canvas.h"
#include "ui/gfx/surface/transport_dib.h"
namespace ppapi {
namespace proxy {
ImageData::ImageData(const HostResource& resource,
const PP_ImageDataDesc& desc,
ImageHandle handle)
: Resource(resource),
desc_(desc) {
#if defined(OS_WIN)
transport_dib_.reset(TransportDIB::CreateWithHandle(handle));
#else
transport_dib_.reset(TransportDIB::Map(handle));
#endif
}
ImageData::~ImageData() {
}
thunk::PPB_ImageData_API* ImageData::AsPPB_ImageData_API() {
return this;
}
PP_Bool ImageData::Describe(PP_ImageDataDesc* desc) {
memcpy(desc, &desc_, sizeof(PP_ImageDataDesc));
return PP_TRUE;
}
void* ImageData::Map() {
if (!mapped_canvas_.get()) {
mapped_canvas_.reset(transport_dib_->GetPlatformCanvas(desc_.size.width,
desc_.size.height));
if (!mapped_canvas_.get())
return NULL;
}
const SkBitmap& bitmap =
skia::GetTopDevice(*mapped_canvas_)->accessBitmap(true);
bitmap.lockPixels();
return bitmap.getAddr(0, 0);
}
void ImageData::Unmap() {
// TODO(brettw) have a way to unmap a TransportDIB. Currently this isn't
// possible since deleting the TransportDIB also frees all the handles.
// We need to add a method to TransportDIB to release the handles.
}
int32_t ImageData::GetSharedMemory(int* /* handle */,
uint32_t* /* byte_count */) {
// Not supported in the proxy (this method is for actually implementing the
// proxy in the host).
return PP_ERROR_NOACCESS;
}
#if defined(OS_WIN)
const ImageHandle ImageData::NullHandle = NULL;
#elif defined(OS_MACOSX)
const ImageHandle ImageData::NullHandle = ImageHandle();
#else
const ImageHandle ImageData::NullHandle = 0;
#endif
ImageHandle ImageData::HandleFromInt(int32_t i) {
#if defined(OS_WIN)
return reinterpret_cast<ImageHandle>(i);
#elif defined(OS_MACOSX)
return ImageHandle(i, false);
#else
return static_cast<ImageHandle>(i);
#endif
}
} // namespace proxy
} // namespace ppapi
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