| Emilian Peev | faa4bde | 2020-01-23 12:19:37 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2020 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 | #ifndef ANDROID_SERVERS_CAMERA_FRAMEPRODUCER_H |
| 18 | #define ANDROID_SERVERS_CAMERA_FRAMEPRODUCER_H |
| 19 | |
| 20 | #include <utils/RefBase.h> |
| 21 | #include <utils/String8.h> |
| 22 | #include <utils/Timers.h> |
| 23 | |
| 24 | #include "camera/CameraMetadata.h" |
| 25 | #include "camera/CaptureResult.h" |
| 26 | |
| 27 | namespace android { |
| 28 | |
| 29 | /** |
| 30 | * Abstract class for HAL frame producers |
| 31 | */ |
| 32 | class FrameProducer : public virtual RefBase { |
| 33 | public: |
| 34 | /** |
| 35 | * Retrieve the static characteristics metadata buffer |
| 36 | */ |
| 37 | virtual const CameraMetadata& info() const = 0; |
| 38 | |
| 39 | /** |
| 40 | * Retrieve the device camera ID |
| 41 | */ |
| 42 | virtual const String8& getId() const = 0; |
| 43 | |
| 44 | /** |
| 45 | * Wait for a new frame to be produced, with timeout in nanoseconds. |
| 46 | * Returns TIMED_OUT when no frame produced within the specified duration |
| 47 | * May be called concurrently to most methods, except for getNextFrame |
| 48 | */ |
| 49 | virtual status_t waitForNextFrame(nsecs_t timeout) = 0; |
| 50 | |
| 51 | /** |
| 52 | * Get next capture result frame from the result queue. Returns NOT_ENOUGH_DATA |
| 53 | * if the queue is empty; caller takes ownership of the metadata buffer inside |
| 54 | * the capture result object's metadata field. |
| 55 | * May be called concurrently to most methods, except for waitForNextFrame. |
| 56 | */ |
| 57 | virtual status_t getNextResult(CaptureResult *frame) = 0; |
| 58 | |
| 59 | }; // class FrameProducer |
| 60 | |
| 61 | } // namespace android |
| 62 | |
| 63 | #endif |