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/*
* 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
size_t HdrCapabilities::getFlattenedSize() const {
return sizeof(mMaxLuminance) +
sizeof(mMaxAverageLuminance) +
sizeof(mMinLuminance) +
sizeof(int32_t) +
mSupportedHdrTypes.size() * sizeof(ui::Hdr);
}
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] = static_cast<int32_t>(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.resize(itemCount);
for (size_t i = 0; i < itemCount; ++i) {
mSupportedHdrTypes[i] = static_cast<ui::Hdr>(buf[4 + i]);
}
}
return NO_ERROR;
}
#if defined(__clang__)
#pragma clang diagnostic pop
#endif
} // namespace android
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