| /* |
| * Copyright 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <ui/HdrCapabilities.h> |
| |
| namespace android { |
| |
| #if defined(__clang__) |
| #pragma clang diagnostic push |
| #pragma clang diagnostic ignored "-Wundefined-reinterpret-cast" |
| #endif |
| |
| HdrCapabilities::~HdrCapabilities() = default; |
| HdrCapabilities::HdrCapabilities(HdrCapabilities&& other) = default; |
| HdrCapabilities& HdrCapabilities::operator=(HdrCapabilities&& other) = default; |
| |
| |
| size_t HdrCapabilities::getFlattenedSize() const { |
| return sizeof(mMaxLuminance) + |
| sizeof(mMaxAverageLuminance) + |
| sizeof(mMinLuminance) + |
| sizeof(int32_t) + |
| mSupportedHdrTypes.size() * sizeof(int32_t); |
| } |
| |
| status_t HdrCapabilities::flatten(void* buffer, size_t size) const { |
| |
| if (size < getFlattenedSize()) { |
| return NO_MEMORY; |
| } |
| |
| int32_t* const buf = static_cast<int32_t*>(buffer); |
| reinterpret_cast<float&>(buf[0]) = mMaxLuminance; |
| reinterpret_cast<float&>(buf[1]) = mMaxAverageLuminance; |
| reinterpret_cast<float&>(buf[2]) = mMinLuminance; |
| buf[3] = static_cast<int32_t>(mSupportedHdrTypes.size()); |
| for (size_t i = 0, c = mSupportedHdrTypes.size(); i < c; ++i) { |
| buf[4 + i] = mSupportedHdrTypes[i]; |
| } |
| return NO_ERROR; |
| } |
| |
| status_t HdrCapabilities::unflatten(void const* buffer, size_t size) { |
| |
| size_t minSize = sizeof(mMaxLuminance) + |
| sizeof(mMaxAverageLuminance) + |
| sizeof(mMinLuminance) + |
| sizeof(int32_t); |
| |
| if (size < minSize) { |
| return NO_MEMORY; |
| } |
| |
| int32_t const * const buf = static_cast<int32_t const *>(buffer); |
| const size_t itemCount = size_t(buf[3]); |
| |
| // check the buffer is large enough |
| if (size < minSize + itemCount * sizeof(int32_t)) { |
| return BAD_VALUE; |
| } |
| |
| mMaxLuminance = reinterpret_cast<float const&>(buf[0]); |
| mMaxAverageLuminance = reinterpret_cast<float const&>(buf[1]); |
| mMinLuminance = reinterpret_cast<float const&>(buf[2]); |
| if (itemCount) { |
| mSupportedHdrTypes.reserve(itemCount); |
| for (size_t i = 0; i < itemCount; ++i) { |
| mSupportedHdrTypes[i] = buf[4 + i]; |
| } |
| } |
| return NO_ERROR; |
| } |
| |
| #if defined(__clang__) |
| #pragma clang diagnostic pop |
| #endif |
| |
| } // namespace android |