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, camera3_stream_type_t type, 36 uint32_t width, uint32_t height, size_t maxSize, int format, 37 android_dataspace dataSpace, camera3_stream_rotation_t rotation, 38 const String8& physicalCameraId, 39 int setId = CAMERA3_STREAM_SET_ID_INVALID); 40 41 public: 42 43 virtual ~Camera3IOStreamBase(); 44 45 /** 46 * Camera3Stream interface 47 */ 48 49 virtual void dump(int fd, const Vector<String16> &args) const; 50 51 protected: 52 size_t mTotalBufferCount; 53 // sum of input and output buffers that are currently acquired by HAL 54 size_t mHandoutTotalBufferCount; 55 // number of output buffers that are currently acquired by HAL. This will be 56 // Redundant when camera3 streams are no longer bidirectional streams. 57 size_t mHandoutOutputBufferCount; 58 Condition mBufferReturnedSignal; 59 uint32_t mFrameCount; 60 // Last received output buffer's timestamp 61 nsecs_t mLastTimestamp; 62 63 // The merged release fence for all returned buffers 64 sp<Fence> mCombinedFence; 65 66 status_t returnAnyBufferLocked( 67 const camera3_stream_buffer &buffer, 68 nsecs_t timestamp, 69 bool output, 70 const std::vector<size_t>& surface_ids = std::vector<size_t>()); 71 72 virtual status_t returnBufferCheckedLocked( 73 const camera3_stream_buffer &buffer, 74 nsecs_t timestamp, 75 bool output, 76 const std::vector<size_t>& surface_ids, 77 /*out*/ 78 sp<Fence> *releaseFenceOut) = 0; 79 80 /** 81 * Internal Camera3Stream interface 82 */ 83 virtual bool hasOutstandingBuffersLocked() const; 84 85 virtual size_t getBufferCountLocked(); 86 87 virtual size_t getHandoutOutputBufferCountLocked() const; 88 89 virtual size_t getHandoutInputBufferCountLocked(); 90 91 virtual status_t getEndpointUsage(uint64_t *usage) const = 0; 92 93 status_t getBufferPreconditionCheckLocked() const; 94 status_t returnBufferPreconditionCheckLocked() const; 95 96 // State check only 97 virtual status_t configureQueueLocked(); 98 // State checks only 99 virtual status_t disconnectLocked(); 100 101 // Hand out the buffer to a native location, 102 // incrementing the internal refcount and dequeued buffer count 103 void handoutBufferLocked(camera3_stream_buffer &buffer, 104 buffer_handle_t *handle, 105 int acquire_fence, 106 int release_fence, 107 camera3_buffer_status_t status, 108 bool output); 109 110 }; // class Camera3IOStreamBase 111 112 } // namespace camera3 113 114 } // namespace android 115 116 #endif 117