| Henry Fang | eca5033 | 2019-09-16 13:19:53 -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 | package android.hardware.tv.tuner@1.0; |
| 17 | |
| 18 | /** |
| 19 | * A Tuner LNB (low-noise block downconverter) is used by satellite frontend |
| 20 | * to receive the microwave signal from the satellite, amplify it, and |
| 21 | * downconvert the frequency to a lower frequency. |
| 22 | */ |
| 23 | interface ILnb { |
| 24 | /** |
| 25 | * Set the lnb's power voltage. |
| 26 | * |
| 27 | * @param voltage the power's voltage the Lnb to use. |
| 28 | * @return result Result status of the operation. |
| 29 | * SUCCESS if successful, |
| 30 | * INVALID_ARGUMENT if the selected voltage isn't allowed, |
| 31 | * UNKNOWN_ERROR if failed for other reasons. |
| 32 | */ |
| 33 | setVoltage(FrontendLnbVoltage voltage) generates (Result result); |
| 34 | |
| 35 | /** |
| 36 | * Set the lnb's tone mode. |
| 37 | * |
| 38 | * @param tone the tone mode the Lnb to use. |
| 39 | * @return result Result status of the operation. |
| 40 | * SUCCESS if successful, |
| 41 | * INVALID_ARGUMENT if the selected tone mode isn't allowed, |
| 42 | * UNKNOWN_ERROR if failed for other reasons. |
| 43 | */ |
| 44 | setTone(FrontendLnbTone tone) generates (Result result); |
| 45 | |
| 46 | /** |
| 47 | * Select the lnb's position. |
| 48 | * |
| 49 | * @param position the position the Lnb to use. |
| 50 | * @return result Result status of the operation. |
| 51 | * SUCCESS if successful, |
| 52 | * INVALID_ARGUMENT if the selected position isn't allowed, |
| 53 | * UNKNOWN_ERROR if failed for other reasons. |
| 54 | */ |
| 55 | setSatellitePosition(FrontendLnbPosition position) generates (Result result); |
| 56 | |
| 57 | /** |
| 58 | * Releases the LNB instance |
| 59 | * |
| 60 | * Associated resources are released. close may be called more than once. |
| 61 | * Calls to any other method after this will return an error |
| 62 | * |
| 63 | * @return result Result status of the operation. |
| 64 | * SUCCESS if successful, |
| 65 | * UNKNOWN_ERROR if failed for other reasons. |
| 66 | */ |
| 67 | close() generates (Result result); |
| 68 | }; |