Dan Stoza | 7d7ae73 | 2016-03-16 12:23:40 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include <ui/HdrCapabilities.h> |
| 18 | |
Dan Stoza | 7d7ae73 | 2016-03-16 12:23:40 -0700 | [diff] [blame] | 19 | namespace android { |
| 20 | |
Mathias Agopian | e1f5e6f | 2017-02-06 16:34:41 -0800 | [diff] [blame] | 21 | #if defined(__clang__) |
| 22 | #pragma clang diagnostic push |
| 23 | #pragma clang diagnostic ignored "-Wundefined-reinterpret-cast" |
| 24 | #endif |
| 25 | |
Mathias Agopian | e1f5e6f | 2017-02-06 16:34:41 -0800 | [diff] [blame] | 26 | size_t HdrCapabilities::getFlattenedSize() const { |
| 27 | return sizeof(mMaxLuminance) + |
| 28 | sizeof(mMaxAverageLuminance) + |
| 29 | sizeof(mMinLuminance) + |
| 30 | sizeof(int32_t) + |
Peiyong Lin | 6266589 | 2018-04-16 11:07:44 -0700 | [diff] [blame] | 31 | mSupportedHdrTypes.size() * sizeof(ui::Hdr); |
Dan Stoza | 7d7ae73 | 2016-03-16 12:23:40 -0700 | [diff] [blame] | 32 | } |
| 33 | |
Mathias Agopian | e1f5e6f | 2017-02-06 16:34:41 -0800 | [diff] [blame] | 34 | status_t HdrCapabilities::flatten(void* buffer, size_t size) const { |
| 35 | |
| 36 | if (size < getFlattenedSize()) { |
| 37 | return NO_MEMORY; |
Dan Stoza | 7d7ae73 | 2016-03-16 12:23:40 -0700 | [diff] [blame] | 38 | } |
Mathias Agopian | e1f5e6f | 2017-02-06 16:34:41 -0800 | [diff] [blame] | 39 | |
| 40 | int32_t* const buf = static_cast<int32_t*>(buffer); |
| 41 | reinterpret_cast<float&>(buf[0]) = mMaxLuminance; |
| 42 | reinterpret_cast<float&>(buf[1]) = mMaxAverageLuminance; |
| 43 | reinterpret_cast<float&>(buf[2]) = mMinLuminance; |
| 44 | buf[3] = static_cast<int32_t>(mSupportedHdrTypes.size()); |
| 45 | for (size_t i = 0, c = mSupportedHdrTypes.size(); i < c; ++i) { |
Peiyong Lin | 6266589 | 2018-04-16 11:07:44 -0700 | [diff] [blame] | 46 | buf[4 + i] = static_cast<int32_t>(mSupportedHdrTypes[i]); |
Dan Stoza | 7d7ae73 | 2016-03-16 12:23:40 -0700 | [diff] [blame] | 47 | } |
Mathias Agopian | e1f5e6f | 2017-02-06 16:34:41 -0800 | [diff] [blame] | 48 | return NO_ERROR; |
Dan Stoza | 7d7ae73 | 2016-03-16 12:23:40 -0700 | [diff] [blame] | 49 | } |
| 50 | |
Mathias Agopian | e1f5e6f | 2017-02-06 16:34:41 -0800 | [diff] [blame] | 51 | status_t HdrCapabilities::unflatten(void const* buffer, size_t size) { |
| 52 | |
| 53 | size_t minSize = sizeof(mMaxLuminance) + |
| 54 | sizeof(mMaxAverageLuminance) + |
| 55 | sizeof(mMinLuminance) + |
| 56 | sizeof(int32_t); |
| 57 | |
| 58 | if (size < minSize) { |
| 59 | return NO_MEMORY; |
| 60 | } |
| 61 | |
| 62 | int32_t const * const buf = static_cast<int32_t const *>(buffer); |
| 63 | const size_t itemCount = size_t(buf[3]); |
| 64 | |
| 65 | // check the buffer is large enough |
| 66 | if (size < minSize + itemCount * sizeof(int32_t)) { |
| 67 | return BAD_VALUE; |
| 68 | } |
| 69 | |
| 70 | mMaxLuminance = reinterpret_cast<float const&>(buf[0]); |
| 71 | mMaxAverageLuminance = reinterpret_cast<float const&>(buf[1]); |
| 72 | mMinLuminance = reinterpret_cast<float const&>(buf[2]); |
| 73 | if (itemCount) { |
Jay Patel | 06a1389 | 2017-08-16 14:51:09 -0700 | [diff] [blame] | 74 | mSupportedHdrTypes.resize(itemCount); |
Mathias Agopian | e1f5e6f | 2017-02-06 16:34:41 -0800 | [diff] [blame] | 75 | for (size_t i = 0; i < itemCount; ++i) { |
Peiyong Lin | 6266589 | 2018-04-16 11:07:44 -0700 | [diff] [blame] | 76 | mSupportedHdrTypes[i] = static_cast<ui::Hdr>(buf[4 + i]); |
Mathias Agopian | e1f5e6f | 2017-02-06 16:34:41 -0800 | [diff] [blame] | 77 | } |
| 78 | } |
| 79 | return NO_ERROR; |
| 80 | } |
| 81 | |
| 82 | #if defined(__clang__) |
| 83 | #pragma clang diagnostic pop |
| 84 | #endif |
| 85 | |
Dan Stoza | 7d7ae73 | 2016-03-16 12:23:40 -0700 | [diff] [blame] | 86 | } // namespace android |