1 /* 2 * device_manager.h - device manager 3 * 4 * Copyright (c) 2014-2015 Intel Corporation 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 * 18 * Author: Wind Yuan <feng.yuan@intel.com> 19 */ 20 21 #ifndef XCAM_DEVICE_MANAGER_H 22 #define XCAM_DEVICE_MANAGER_H 23 24 #include <xcam_std.h> 25 #include <v4l2_device.h> 26 #include <v4l2_buffer_proxy.h> 27 #include <x3a_analyzer.h> 28 #include <smart_analyzer.h> 29 #include <x3a_image_process_center.h> 30 #include <image_processor.h> 31 #include <poll_thread.h> 32 #include <stats_callback_interface.h> 33 34 namespace XCam { 35 36 enum XCamMessageType { 37 XCAM_MESSAGE_BUF_OK = 0, 38 XCAM_MESSAGE_BUF_ERROR, 39 XCAM_MESSAGE_STATS_OK, 40 XCAM_MESSAGE_STATS_ERROR, 41 XCAM_MESSAGE_3A_RESULTS_OK, 42 XCAM_MESSAGE_3A_RESULTS_ERROR, 43 }; 44 45 struct XCamMessage { 46 int64_t timestamp; 47 XCamMessageType msg_id; 48 char *msg; 49 50 XCamMessage ( 51 XCamMessageType type, 52 int64_t timestamp = InvalidTimestamp, 53 const char *message = NULL); 54 ~XCamMessage (); 55 56 XCAM_DEAD_COPY (XCamMessage); 57 }; 58 59 class MessageThread; 60 61 class DeviceManager 62 : public PollCallback 63 , public StatsCallback 64 , public AnalyzerCallback 65 , public ImageProcessCallback 66 { 67 friend class MessageThread; 68 69 public: 70 DeviceManager(); 71 virtual ~DeviceManager(); 72 73 bool set_capture_device (SmartPtr<V4l2Device> device); 74 bool set_event_device (SmartPtr<V4l2SubDevice> device); 75 bool set_3a_analyzer (SmartPtr<X3aAnalyzer> analyzer); 76 bool set_smart_analyzer (SmartPtr<SmartAnalyzer> analyzer); 77 bool add_image_processor (SmartPtr<ImageProcessor> processor); 78 bool set_poll_thread (SmartPtr<PollThread> thread); 79 get_capture_device()80 SmartPtr<V4l2Device>& get_capture_device () { 81 return _device; 82 } get_event_device()83 SmartPtr<V4l2SubDevice>& get_event_device () { 84 return _subdevice; 85 } get_analyzer()86 SmartPtr<X3aAnalyzer>& get_analyzer () { 87 return _3a_analyzer; 88 } 89 is_running()90 bool is_running () const { 91 return _is_running; 92 } has_3a()93 bool has_3a () const { 94 return _has_3a; 95 } 96 97 XCamReturn start (); 98 XCamReturn stop (); 99 100 protected: 101 virtual void handle_message (const SmartPtr<XCamMessage> &msg) = 0; 102 virtual void handle_buffer (const SmartPtr<VideoBuffer> &buf) = 0; 103 104 protected: 105 //virtual functions derived from PollCallback 106 virtual XCamReturn poll_buffer_ready (SmartPtr<VideoBuffer> &buf); 107 virtual XCamReturn poll_buffer_failed (int64_t timestamp, const char *msg); 108 virtual XCamReturn x3a_stats_ready (const SmartPtr<X3aStats> &stats); 109 virtual XCamReturn dvs_stats_ready (); 110 virtual XCamReturn scaled_image_ready (const SmartPtr<VideoBuffer> &buffer); 111 112 //virtual functions derived from AnalyzerCallback 113 virtual void x3a_calculation_done (XAnalyzer *analyzer, X3aResultList &results); 114 virtual void x3a_calculation_failed (XAnalyzer *analyzer, int64_t timestamp, const char *msg); 115 116 //virtual functions derived from ImageProcessCallback 117 virtual void process_buffer_done (ImageProcessor *processor, const SmartPtr<VideoBuffer> &buf); 118 virtual void process_buffer_failed (ImageProcessor *processor, const SmartPtr<VideoBuffer> &buf); 119 virtual void process_image_result_done (ImageProcessor *processor, const SmartPtr<X3aResult> &result); 120 121 private: 122 void post_message (XCamMessageType type, int64_t timestamp, const char *msg); 123 XCamReturn message_loop (); 124 125 XCAM_DEAD_COPY (DeviceManager); 126 127 protected: 128 SmartPtr<V4l2Device> _device; 129 SmartPtr<V4l2SubDevice> _subdevice; 130 SmartPtr<PollThread> _poll_thread; 131 132 /* 3A calculation and image processing*/ 133 bool _has_3a; 134 SmartPtr<X3aAnalyzer> _3a_analyzer; 135 SmartPtr<X3aImageProcessCenter> _3a_process_center; 136 137 /* msg queue */ 138 SafeList<XCamMessage> _msg_queue; 139 SmartPtr<MessageThread> _msg_thread; 140 141 bool _is_running; 142 143 /* smart analysis */ 144 SmartPtr<SmartAnalyzer> _smart_analyzer; 145 }; 146 147 }; 148 149 #endif //XCAM_DEVICE_MANAGER_H 150