| // 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 "ppapi/cpp/image_data.h" |
| |
| #include <string.h> // Needed for memset. |
| |
| #include <algorithm> |
| |
| #include "ppapi/cpp/instance_handle.h" |
| #include "ppapi/cpp/module.h" |
| #include "ppapi/cpp/module_impl.h" |
| |
| namespace pp { |
| |
| namespace { |
| |
| template <> const char* interface_name<PPB_ImageData_1_0>() { |
| return PPB_IMAGEDATA_INTERFACE_1_0; |
| } |
| |
| } // namespace |
| |
| ImageData::ImageData() : data_(NULL) { |
| memset(&desc_, 0, sizeof(PP_ImageDataDesc)); |
| } |
| |
| ImageData::ImageData(const ImageData& other) |
| : Resource(other), |
| desc_(other.desc_), |
| data_(other.data_) { |
| } |
| |
| ImageData::ImageData(PassRef, PP_Resource resource) |
| : Resource(PASS_REF, resource), |
| data_(NULL) { |
| memset(&desc_, 0, sizeof(PP_ImageDataDesc)); |
| InitData(); |
| } |
| |
| ImageData::ImageData(const InstanceHandle& instance, |
| PP_ImageDataFormat format, |
| const Size& size, |
| bool init_to_zero) |
| : data_(NULL) { |
| memset(&desc_, 0, sizeof(PP_ImageDataDesc)); |
| |
| if (!has_interface<PPB_ImageData_1_0>()) |
| return; |
| |
| PassRefFromConstructor(get_interface<PPB_ImageData_1_0>()->Create( |
| instance.pp_instance(), format, &size.pp_size(), |
| PP_FromBool(init_to_zero))); |
| InitData(); |
| } |
| |
| ImageData& ImageData::operator=(const ImageData& other) { |
| Resource::operator=(other); |
| desc_ = other.desc_; |
| data_ = other.data_; |
| return *this; |
| } |
| |
| const uint32_t* ImageData::GetAddr32(const Point& coord) const { |
| // Prefer evil const casts rather than evil code duplication. |
| return const_cast<ImageData*>(this)->GetAddr32(coord); |
| } |
| |
| uint32_t* ImageData::GetAddr32(const Point& coord) { |
| // If we add more image format types that aren't 32-bit, we'd want to check |
| // here and fail. |
| return reinterpret_cast<uint32_t*>( |
| &static_cast<char*>(data())[coord.y() * stride() + coord.x() * 4]); |
| } |
| |
| // static |
| bool ImageData::IsImageDataFormatSupported(PP_ImageDataFormat format) { |
| if (!has_interface<PPB_ImageData_1_0>()) |
| return false; |
| return PP_ToBool(get_interface<PPB_ImageData_1_0>()-> |
| IsImageDataFormatSupported(format)); |
| } |
| |
| // static |
| PP_ImageDataFormat ImageData::GetNativeImageDataFormat() { |
| if (!has_interface<PPB_ImageData_1_0>()) |
| return PP_IMAGEDATAFORMAT_BGRA_PREMUL; // Default to something on failure. |
| return get_interface<PPB_ImageData_1_0>()->GetNativeImageDataFormat(); |
| } |
| |
| void ImageData::InitData() { |
| if (!has_interface<PPB_ImageData_1_0>()) |
| return; |
| if (!get_interface<PPB_ImageData_1_0>()->Describe(pp_resource(), &desc_) || |
| !(data_ = get_interface<PPB_ImageData_1_0>()->Map(pp_resource()))) |
| *this = ImageData(); |
| } |
| |
| } // namespace pp |