AudioInputDescriptor.h revision 98cc191247388132b6fd8a4ecd07abd6e4c5a0ed 
1/*
2 * Copyright (C) 2015 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#pragma once
18
19#include "AudioPort.h"
20#include <utils/Errors.h>
21#include <system/audio.h>
22#include <utils/SortedVector.h>
23
24namespace android {
25
26class IOProfile;
27class AudioMix;
28
29// descriptor for audio inputs. Used to maintain current configuration of each opened audio input
30// and keep track of the usage of this input.
31class AudioInputDescriptor: public AudioPortConfig
32{
33public:
34    AudioInputDescriptor(const sp<IOProfile>& profile);
35    void setIoHandle(audio_io_handle_t ioHandle);
36
37    status_t    dump(int fd);
38
39    audio_port_handle_t           mId;
40    audio_io_handle_t             mIoHandle;       // input handle
41    audio_devices_t               mDevice;         // current device this input is routed to
42    AudioMix                      *mPolicyMix;     // non NULL when used by a dynamic policy
43    audio_patch_handle_t          mPatchHandle;
44    uint32_t                      mRefCount;       // number of AudioRecord clients using
45    // this input
46    uint32_t                      mOpenRefCount;
47    audio_source_t                mInputSource;    // input source selected by application
48    //(mediarecorder.h)
49    const sp<IOProfile>           mProfile;        // I/O profile this output derives from
50    SortedVector<audio_session_t> mSessions;       // audio sessions attached to this input
51    bool                          mIsSoundTrigger; // used by a soundtrigger capture
52
53    virtual void toAudioPortConfig(struct audio_port_config *dstConfig,
54            const struct audio_port_config *srcConfig = NULL) const;
55    virtual sp<AudioPort> getAudioPort() const { return mProfile; }
56    void toAudioPort(struct audio_port *port) const;
57};
58
59}; // namespace android
60