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Amyb4b68012019-10-15 17:38:19 -07001/*
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
17#ifndef ANDROID_HARDWARE_TV_TUNER_V1_0_DVR_H_
18#define ANDROID_HARDWARE_TV_TUNER_V1_0_DVR_H_
19
20#include <android/hardware/tv/tuner/1.0/IDvr.h>
21#include <fmq/MessageQueue.h>
22#include <math.h>
23#include <set>
24#include "Demux.h"
25#include "Frontend.h"
26#include "Tuner.h"
27
28using namespace std;
29
30namespace android {
31namespace hardware {
32namespace tv {
33namespace tuner {
34namespace V1_0 {
35namespace implementation {
36
37using ::android::hardware::EventFlag;
38using ::android::hardware::kSynchronizedReadWrite;
39using ::android::hardware::MessageQueue;
40using ::android::hardware::MQDescriptorSync;
41using ::android::hardware::tv::tuner::V1_0::IDemux;
42using ::android::hardware::tv::tuner::V1_0::IDvrCallback;
43using ::android::hardware::tv::tuner::V1_0::Result;
44
45using DvrMQ = MessageQueue<uint8_t, kSynchronizedReadWrite>;
46
47class Demux;
48class Filter;
49class Frontend;
50class Tuner;
51
52class Dvr : public IDvr {
53 public:
54 Dvr();
55
56 Dvr(DvrType type, uint32_t bufferSize, const sp<IDvrCallback>& cb, sp<Demux> demux);
57
58 ~Dvr();
59
60 virtual Return<void> getQueueDesc(getQueueDesc_cb _hidl_cb) override;
61
62 virtual Return<Result> configure(const DvrSettings& settings) override;
63
64 virtual Return<Result> attachFilter(const sp<IFilter>& filter) override;
65
66 virtual Return<Result> detachFilter(const sp<IFilter>& filter) override;
67
68 virtual Return<Result> start() override;
69
70 virtual Return<Result> stop() override;
71
72 virtual Return<Result> flush() override;
73
74 virtual Return<Result> close() override;
75
76 /**
77 * To create a DvrMQ and its Event Flag.
78 *
79 * Return false is any of the above processes fails.
80 */
81 bool createDvrMQ();
Amy5ed13572019-12-11 15:33:51 -080082 void sendBroadcastInputToDvrRecord(vector<uint8_t> byteBuffer);
83 bool writeRecordFMQ(const std::vector<uint8_t>& data);
Amy Zhang6bda6392020-05-26 19:00:46 -070084 bool addPlaybackFilter(uint32_t filterId, sp<IFilter> filter);
85 bool removePlaybackFilter(uint32_t filterId);
86 bool readPlaybackFMQ(bool isVirtualFrontend, bool isRecording);
87 bool startFilterDispatcher(bool isVirtualFrontend, bool isRecording);
88 EventFlag* getDvrEventFlag();
Amyb4b68012019-10-15 17:38:19 -070089
90 private:
91 // Demux service
92 sp<Demux> mDemux;
93
94 DvrType mType;
95 uint32_t mBufferSize;
96 sp<IDvrCallback> mCallback;
97 std::map<uint32_t, sp<IFilter>> mFilters;
98
99 void deleteEventFlag();
100 bool readDataFromMQ();
101 void maySendPlaybackStatusCallback();
102 void maySendRecordStatusCallback();
103 PlaybackStatus checkPlaybackStatusChange(uint32_t availableToWrite, uint32_t availableToRead,
104 uint32_t highThreshold, uint32_t lowThreshold);
Amy5ed13572019-12-11 15:33:51 -0800105 RecordStatus checkRecordStatusChange(uint32_t availableToWrite, uint32_t availableToRead,
106 uint32_t highThreshold, uint32_t lowThreshold);
Amyb4b68012019-10-15 17:38:19 -0700107 /**
108 * A dispatcher to read and dispatch input data to all the started filters.
109 * Each filter handler handles the data filtering/output writing/filterEvent updating.
110 */
Amyb4b68012019-10-15 17:38:19 -0700111 void startTpidFilter(vector<uint8_t> data);
Amyb4b68012019-10-15 17:38:19 -0700112 static void* __threadLoopPlayback(void* user);
Amy5ed13572019-12-11 15:33:51 -0800113 static void* __threadLoopRecord(void* user);
Amyb4b68012019-10-15 17:38:19 -0700114 void playbackThreadLoop();
Amy5ed13572019-12-11 15:33:51 -0800115 void recordThreadLoop();
Amyb4b68012019-10-15 17:38:19 -0700116
117 unique_ptr<DvrMQ> mDvrMQ;
118 EventFlag* mDvrEventFlag;
119 /**
120 * Demux callbacks used on filter events or IO buffer status
121 */
122 bool mDvrConfigured = false;
123 DvrSettings mDvrSettings;
124
125 // Thread handlers
126 pthread_t mDvrThread;
Amyb4b68012019-10-15 17:38:19 -0700127
128 // FMQ status local records
129 PlaybackStatus mPlaybackStatus;
Amy5ed13572019-12-11 15:33:51 -0800130 RecordStatus mRecordStatus;
Amyb4b68012019-10-15 17:38:19 -0700131 /**
132 * If a specific filter's writing loop is still running
133 */
134 bool mDvrThreadRunning;
Amyb4b68012019-10-15 17:38:19 -0700135 bool mKeepFetchingDataFromFrontend;
136 /**
137 * Lock to protect writes to the FMQs
138 */
139 std::mutex mWriteLock;
140 /**
141 * Lock to protect writes to the input status
142 */
143 std::mutex mPlaybackStatusLock;
Amy5ed13572019-12-11 15:33:51 -0800144 std::mutex mRecordStatusLock;
Amyb4b68012019-10-15 17:38:19 -0700145 std::mutex mDvrThreadLock;
146
147 const bool DEBUG_DVR = false;
Amy5ed13572019-12-11 15:33:51 -0800148
149 // Booleans to check if recording is running.
150 // Recording is ready when both of the following are set to true.
151 bool mIsRecordStarted = false;
Amyb4b68012019-10-15 17:38:19 -0700152};
153
154} // namespace implementation
155} // namespace V1_0
156} // namespace tuner
157} // namespace tv
158} // namespace hardware
159} // namespace android
160
161#endif // ANDROID_HARDWARE_TV_TUNER_V1_0_DVR_H_