1 /* 2 * Copyright (C) 2013-2018 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_CAMERA3_IO_STREAM_BASE_H 18 #define ANDROID_SERVERS_CAMERA3_IO_STREAM_BASE_H 19 20 #include <utils/RefBase.h> 21 #include <gui/Surface.h> 22 23 #include "Camera3Stream.h" 24 25 namespace android { 26 27 namespace camera3 { 28 29 /** 30 * A base class for managing a single stream of I/O data from the camera device. 31 */ 32 class Camera3IOStreamBase : 33 public Camera3Stream { 34 protected: 35 Camera3IOStreamBase(int id, camera_stream_type_t type, 36 uint32_t width, uint32_t height, size_t maxSize, int format, 37 android_dataspace dataSpace, camera_stream_rotation_t rotation, 38 const String8& physicalCameraId, 39 const std::unordered_set<int32_t> &sensorPixelModesUsed, 40 int setId = CAMERA3_STREAM_SET_ID_INVALID, bool isMultiResolution = false); 41 42 public: 43 44 virtual ~Camera3IOStreamBase(); 45 46 /** 47 * Camera3Stream interface 48 */ 49 50 virtual void dump(int fd, const Vector<String16> &args) const; 51 getMaxTotalBuffers()52 int getMaxTotalBuffers() const { return mTotalBufferCount; } 53 protected: 54 size_t mTotalBufferCount; 55 // sum of input and output buffers that are currently acquired by HAL 56 size_t mHandoutTotalBufferCount; 57 // number of output buffers that are currently acquired by HAL. This will be 58 // Redundant when camera3 streams are no longer bidirectional streams. 59 size_t mHandoutOutputBufferCount; 60 uint32_t mFrameCount; 61 // Last received output buffer's timestamp 62 nsecs_t mLastTimestamp; 63 64 // The merged release fence for all returned buffers 65 sp<Fence> mCombinedFence; 66 67 status_t returnAnyBufferLocked( 68 const camera_stream_buffer &buffer, 69 nsecs_t timestamp, 70 bool output, 71 const std::vector<size_t>& surface_ids = std::vector<size_t>()); 72 73 virtual status_t returnBufferCheckedLocked( 74 const camera_stream_buffer &buffer, 75 nsecs_t timestamp, 76 bool output, 77 const std::vector<size_t>& surface_ids, 78 /*out*/ 79 sp<Fence> *releaseFenceOut) = 0; 80 81 /** 82 * Internal Camera3Stream interface 83 */ 84 virtual bool hasOutstandingBuffersLocked() const; 85 86 virtual size_t getBufferCountLocked(); 87 88 virtual size_t getHandoutOutputBufferCountLocked() const; 89 90 virtual size_t getHandoutInputBufferCountLocked(); 91 92 virtual status_t getEndpointUsage(uint64_t *usage) const = 0; 93 94 status_t getBufferPreconditionCheckLocked() const; 95 status_t returnBufferPreconditionCheckLocked() const; 96 97 // State check only 98 virtual status_t configureQueueLocked(); 99 // State checks only 100 virtual status_t disconnectLocked(); 101 102 // Hand out the buffer to a native location, 103 // incrementing the internal refcount and dequeued buffer count 104 void handoutBufferLocked(camera_stream_buffer &buffer, 105 buffer_handle_t *handle, 106 int acquire_fence, 107 int release_fence, 108 camera_buffer_status_t status, 109 bool output); 110 111 }; // class Camera3IOStreamBase 112 113 } // namespace camera3 114 115 } // namespace android 116 117 #endif 118