Move the Pepper implementation from webkit/glue/plugins/pepper_* to...

webkit/glue/plugins/pepper_image_data.cc

-// Copyright (c) 2010 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 "webkit/glue/plugins/pepper_image_data.h"
-
-#include <algorithm>
-#include <limits>
-
-#include "base/logging.h"
-#include "base/scoped_ptr.h"
-#include "skia/ext/platform_canvas.h"
-#include "ppapi/c/pp_instance.h"
-#include "ppapi/c/pp_module.h"
-#include "ppapi/c/pp_resource.h"
-#include "ppapi/c/ppb_image_data.h"
-#include "ppapi/c/trusted/ppb_image_data_trusted.h"
-#include "third_party/skia/include/core/SkColorPriv.h"
-#include "webkit/glue/plugins/pepper_common.h"
-#include "webkit/glue/plugins/pepper_plugin_instance.h"
-#include "webkit/glue/plugins/pepper_plugin_module.h"
-
-namespace pepper {
-
-namespace {
-
-PP_ImageDataFormat GetNativeImageDataFormat() {
-  return ImageData::GetNativeImageDataFormat();
-}
-
-PP_Bool IsImageDataFormatSupported(PP_ImageDataFormat format) {
-  return BoolToPPBool(ImageData::IsImageDataFormatSupported(format));
-}
-
-PP_Resource Create(PP_Module module_id,
-                   PP_ImageDataFormat format,
-                   const PP_Size* size,
-                   PP_Bool init_to_zero) {
-  PluginModule* module = ResourceTracker::Get()->GetModule(module_id);
-  if (!module)
-    return 0;
-
-  scoped_refptr<ImageData> data(new ImageData(module));
-  if (!data->Init(format,
-                  size->width,
-                  size->height,
-                  PPBoolToBool(init_to_zero))) {
-    return 0;
-  }
-
-  return data->GetReference();
-}
-
-PP_Bool IsImageData(PP_Resource resource) {
-  return BoolToPPBool(!!Resource::GetAs<ImageData>(resource));
-}
-
-PP_Bool Describe(PP_Resource resource, PP_ImageDataDesc* desc) {
-  // Give predictable values on failure.
-  memset(desc, 0, sizeof(PP_ImageDataDesc));
-
-  scoped_refptr<ImageData> image_data(Resource::GetAs<ImageData>(resource));
-  if (!image_data)
-    return PP_FALSE;
-  image_data->Describe(desc);
-  return PP_TRUE;
-}
-
-void* Map(PP_Resource resource) {
-  scoped_refptr<ImageData> image_data(Resource::GetAs<ImageData>(resource));
-  if (!image_data)
-    return NULL;
-  return image_data->Map();
-}
-
-void Unmap(PP_Resource resource) {
-  scoped_refptr<ImageData> image_data(Resource::GetAs<ImageData>(resource));
-  if (image_data)
-    image_data->Unmap();
-}
-
-int32_t GetSharedMemory(PP_Resource resource,
-                        int* handle,
-                        uint32_t* byte_count) {
-  scoped_refptr<ImageData> image_data(Resource::GetAs<ImageData>(resource));
-  if (image_data) {
-    *handle = image_data->GetSharedMemoryHandle(byte_count);
-    return PP_OK;
-  }
-  return PP_ERROR_BADRESOURCE;
-}
-
-const PPB_ImageData ppb_imagedata = {
-  &GetNativeImageDataFormat,
-  &IsImageDataFormatSupported,
-  &Create,
-  &IsImageData,
-  &Describe,
-  &Map,
-  &Unmap,
-};
-
-const PPB_ImageDataTrusted ppb_imagedata_trusted = {
-  &GetSharedMemory,
-};
-
-}  // namespace
-
-ImageData::ImageData(PluginModule* module)
-    : Resource(module),
-      format_(PP_IMAGEDATAFORMAT_BGRA_PREMUL),
-      width_(0),
-      height_(0) {
-}
-
-ImageData::~ImageData() {
-}
-
-// static
-const PPB_ImageData* ImageData::GetInterface() {
-  return &ppb_imagedata;
-}
-
-// static
-const PPB_ImageDataTrusted* ImageData::GetTrustedInterface() {
-  return &ppb_imagedata_trusted;
-}
-
-// static
-PP_ImageDataFormat ImageData::GetNativeImageDataFormat() {
-  if (SK_B32_SHIFT == 0)
-    return PP_IMAGEDATAFORMAT_BGRA_PREMUL;
-  else if (SK_R32_SHIFT == 0)
-    return PP_IMAGEDATAFORMAT_RGBA_PREMUL;
-  else
-    return PP_IMAGEDATAFORMAT_BGRA_PREMUL;  // Default to something on failure.
-}
-
-// static
-bool ImageData::IsImageDataFormatSupported(PP_ImageDataFormat format) {
-  return format == PP_IMAGEDATAFORMAT_BGRA_PREMUL ||
-      format == PP_IMAGEDATAFORMAT_RGBA_PREMUL;
-}
-
-ImageData* ImageData::AsImageData() {
-  return this;
-}
-
-bool ImageData::Init(PP_ImageDataFormat format,
-                     int width, int height,
-                     bool init_to_zero) {
-  // TODO(brettw) this should be called only on the main thread!
-  // TODO(brettw) use init_to_zero when we implement caching.
-  if (!IsImageDataFormatSupported(format))
-    return false;  // Only support this one format for now.
-  if (width <= 0 || height <= 0)
-    return false;
-  if (static_cast<int64>(width) * static_cast<int64>(height) >=
-      std::numeric_limits<int32>::max())
-    return false;  // Prevent overflow of signed 32-bit ints.
-
-  platform_image_.reset(
-      module()->GetSomeInstance()->delegate()->CreateImage2D(width, height));
-  format_ = format;
-  width_ = width;
-  height_ = height;
-  return !!platform_image_.get();
-}
-
-void ImageData::Describe(PP_ImageDataDesc* desc) const {
-  desc->format = format_;
-  desc->size.width = width_;
-  desc->size.height = height_;
-  desc->stride = width_ * 4;
-}
-
-void* ImageData::Map() {
-  if (!mapped_canvas_.get()) {
-    mapped_canvas_.reset(platform_image_->Map());
-    if (!mapped_canvas_.get())
-      return NULL;
-  }
-  const SkBitmap& bitmap =
-      mapped_canvas_->getTopPlatformDevice().accessBitmap(true);
-
-  // Our platform bitmaps are set to opaque by default, which we don't want.
-  const_cast<SkBitmap&>(bitmap).setIsOpaque(false);
-
-  bitmap.lockPixels();
-  return bitmap.getAddr32(0, 0);
-}
-
-void ImageData::Unmap() {
-  // This is currently unimplemented, which is OK. The data will just always
-  // be around once it's mapped. Chrome's TransportDIB isn't currently
-  // unmappable without freeing it, but this may be something we want to support
-  // in the future to save some memory.
-}
-
-int ImageData::GetSharedMemoryHandle(uint32* byte_count) const {
-  return platform_image_->GetSharedMemoryHandle(byte_count);
-}
-
-const SkBitmap* ImageData::GetMappedBitmap() const {
-  if (!mapped_canvas_.get())
-    return NULL;
-  return &mapped_canvas_->getTopPlatformDevice().accessBitmap(false);
-}
-
-void ImageData::Swap(ImageData* other) {
-  swap(other->platform_image_, platform_image_);
-  swap(other->mapped_canvas_, mapped_canvas_);
-  std::swap(other->format_, format_);
-  std::swap(other->width_, width_);
-  std::swap(other->height_, height_);
-}
-
-}  // namespace pepper