Changyeon Jo | cd5e3fb | 2019-03-22 15:12:22 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2019 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 <log/log.h> |
| 18 | #include "HalDisplay.h" |
| 19 | |
| 20 | namespace android { |
| 21 | namespace automotive { |
| 22 | namespace evs { |
| 23 | namespace V1_0 { |
| 24 | namespace implementation { |
| 25 | |
| 26 | HalDisplay::HalDisplay(sp<IEvsDisplay>& display) : |
| 27 | mHwDisplay(display) { |
| 28 | // nothing to do. |
| 29 | } |
| 30 | |
| 31 | HalDisplay::~HalDisplay() { |
| 32 | shutdown(); |
| 33 | } |
| 34 | |
| 35 | void HalDisplay::shutdown() { |
| 36 | // simply release a strong pointer to remote display object. |
| 37 | mHwDisplay = nullptr; |
| 38 | } |
| 39 | |
| 40 | /** |
| 41 | * Returns a strong pointer to remote display object. |
| 42 | */ |
| 43 | sp<IEvsDisplay> HalDisplay::getHwDisplay() { |
| 44 | return mHwDisplay; |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Gets basic display information from a hardware display object |
| 49 | * and returns. |
| 50 | */ |
| 51 | Return<void> HalDisplay::getDisplayInfo(getDisplayInfo_cb _hidl_cb) { |
| 52 | if (mHwDisplay) { |
| 53 | mHwDisplay->getDisplayInfo(_hidl_cb); |
| 54 | } |
| 55 | |
| 56 | return Void(); |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * Sets the display state as what the clients wants. |
| 61 | */ |
| 62 | Return<EvsResult> HalDisplay::setDisplayState(DisplayState state) { |
| 63 | if (mHwDisplay) { |
| 64 | return mHwDisplay->setDisplayState(state); |
| 65 | } else { |
| 66 | return EvsResult::UNDERLYING_SERVICE_ERROR; |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Gets current display state from a hardware display object and return. |
| 72 | */ |
| 73 | Return<DisplayState> HalDisplay::getDisplayState() { |
| 74 | if (mHwDisplay) { |
| 75 | return mHwDisplay->getDisplayState(); |
| 76 | } else { |
| 77 | return DisplayState::DEAD; |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | /** |
| 82 | * Returns a handle to a frame buffer associated with the display. |
| 83 | */ |
| 84 | Return<void> HalDisplay::getTargetBuffer(getTargetBuffer_cb _hidl_cb) { |
| 85 | if (mHwDisplay) { |
| 86 | mHwDisplay->getTargetBuffer(_hidl_cb); |
| 87 | } |
| 88 | |
| 89 | return Void(); |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * Notifies the display that the buffer is ready to be used. |
| 94 | */ |
| 95 | Return<EvsResult> HalDisplay::returnTargetBufferForDisplay(const BufferDesc& buffer) { |
| 96 | if (mHwDisplay) { |
| 97 | return mHwDisplay->returnTargetBufferForDisplay(buffer); |
| 98 | } else { |
| 99 | return EvsResult::OWNERSHIP_LOST; |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | } // namespace implementation |
| 104 | } // namespace V1_0 |
| 105 | } // namespace evs |
| 106 | } // namespace automotive |
| 107 | } // namespace android |