StreamIn.h revision a1db22a3e5b45b3bd3c2edf84c605ce211c89220 
1/*
2 * Copyright (C) 2016 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_AUDIO_V2_0_STREAMIN_H
18#define ANDROID_HARDWARE_AUDIO_V2_0_STREAMIN_H
19
20#include <atomic>
21#include <memory>
22
23#include <android/hardware/audio/2.0/IStreamIn.h>
24#include <hidl/MQDescriptor.h>
25#include <fmq/EventFlag.h>
26#include <fmq/MessageQueue.h>
27#include <hidl/Status.h>
28#include <utils/Thread.h>
29
30#include "Stream.h"
31
32namespace android {
33namespace hardware {
34namespace audio {
35namespace V2_0 {
36namespace implementation {
37
38using ::android::hardware::audio::common::V2_0::AudioChannelMask;
39using ::android::hardware::audio::common::V2_0::AudioDevice;
40using ::android::hardware::audio::common::V2_0::AudioFormat;
41using ::android::hardware::audio::common::V2_0::AudioSource;
42using ::android::hardware::audio::V2_0::DeviceAddress;
43using ::android::hardware::audio::V2_0::IStream;
44using ::android::hardware::audio::V2_0::IStreamIn;
45using ::android::hardware::audio::V2_0::ParameterValue;
46using ::android::hardware::audio::V2_0::Result;
47using ::android::hardware::Return;
48using ::android::hardware::Void;
49using ::android::hardware::hidl_vec;
50using ::android::hardware::hidl_string;
51using ::android::sp;
52
53struct StreamIn : public IStreamIn {
54    typedef MessageQueue<ReadParameters, kSynchronizedReadWrite> CommandMQ;
55    typedef MessageQueue<uint8_t, kSynchronizedReadWrite> DataMQ;
56    typedef MessageQueue<ReadStatus, kSynchronizedReadWrite> StatusMQ;
57
58    StreamIn(audio_hw_device_t* device, audio_stream_in_t* stream);
59
60    // Methods from ::android::hardware::audio::V2_0::IStream follow.
61    Return<uint64_t> getFrameSize()  override;
62    Return<uint64_t> getFrameCount()  override;
63    Return<uint64_t> getBufferSize()  override;
64    Return<uint32_t> getSampleRate()  override;
65    Return<void> getSupportedSampleRates(getSupportedSampleRates_cb _hidl_cb)  override;
66    Return<Result> setSampleRate(uint32_t sampleRateHz)  override;
67    Return<AudioChannelMask> getChannelMask()  override;
68    Return<void> getSupportedChannelMasks(getSupportedChannelMasks_cb _hidl_cb)  override;
69    Return<Result> setChannelMask(AudioChannelMask mask)  override;
70    Return<AudioFormat> getFormat()  override;
71    Return<void> getSupportedFormats(getSupportedFormats_cb _hidl_cb)  override;
72    Return<Result> setFormat(AudioFormat format)  override;
73    Return<void> getAudioProperties(getAudioProperties_cb _hidl_cb)  override;
74    Return<Result> addEffect(uint64_t effectId)  override;
75    Return<Result> removeEffect(uint64_t effectId)  override;
76    Return<Result> standby()  override;
77    Return<AudioDevice> getDevice()  override;
78    Return<Result> setDevice(const DeviceAddress& address)  override;
79    Return<Result> setConnectedState(const DeviceAddress& address, bool connected)  override;
80    Return<Result> setHwAvSync(uint32_t hwAvSync)  override;
81    Return<void> getParameters(
82            const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb)  override;
83    Return<Result> setParameters(const hidl_vec<ParameterValue>& parameters)  override;
84    Return<void> debugDump(const hidl_handle& fd)  override;
85    Return<Result> close()  override;
86
87    // Methods from ::android::hardware::audio::V2_0::IStreamIn follow.
88    Return<void> getAudioSource(getAudioSource_cb _hidl_cb)  override;
89    Return<Result> setGain(float gain)  override;
90    Return<void> prepareForReading(
91            uint32_t frameSize, uint32_t framesCount, prepareForReading_cb _hidl_cb)  override;
92    Return<uint32_t> getInputFramesLost()  override;
93    Return<void> getCapturePosition(getCapturePosition_cb _hidl_cb)  override;
94    Return<Result> start() override;
95    Return<Result> stop() override;
96    Return<void> createMmapBuffer(int32_t minSizeFrames, createMmapBuffer_cb _hidl_cb) override;
97    Return<void> getMmapPosition(getMmapPosition_cb _hidl_cb) override;
98
99    static Result getCapturePositionImpl(
100            audio_stream_in_t *stream, uint64_t *frames, uint64_t *time);
101
102  private:
103    bool mIsClosed;
104    audio_hw_device_t *mDevice;
105    audio_stream_in_t *mStream;
106    sp<Stream> mStreamCommon;
107    sp<StreamMmap<audio_stream_in_t>> mStreamMmap;
108    std::unique_ptr<CommandMQ> mCommandMQ;
109    std::unique_ptr<DataMQ> mDataMQ;
110    std::unique_ptr<StatusMQ> mStatusMQ;
111    EventFlag* mEfGroup;
112    std::atomic<bool> mStopReadThread;
113    sp<Thread> mReadThread;
114
115    virtual ~StreamIn();
116};
117
118}  // namespace implementation
119}  // namespace V2_0
120}  // namespace audio
121}  // namespace hardware
122}  // namespace android
123
124#endif  // ANDROID_HARDWARE_AUDIO_V2_0_STREAMIN_H
125