1/*
2 * Copyright (C) 2014 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_AUDIO_FAST_CAPTURE_STATE_H
18#define ANDROID_AUDIO_FAST_CAPTURE_STATE_H
19
20#include <media/nbaio/NBAIO.h>
21#include "FastThreadState.h"
22#include <private/media/AudioTrackShared.h>
23
24namespace android {
25
26// Represent a single state of the fast capture
27struct FastCaptureState : FastThreadState {
28                FastCaptureState();
29    /*virtual*/ ~FastCaptureState();
30
31    // all pointer fields use raw pointers; objects are owned and ref-counted by RecordThread
32    NBAIO_Source*   mInputSource;       // HAL input device, must already be negotiated
33    // FIXME by renaming, could pull up these fields to FastThreadState
34    int             mInputSourceGen;    // increment when mInputSource is assigned
35    NBAIO_Sink*     mPipeSink;          // after reading from input source, write to this pipe sink
36    int             mPipeSinkGen;       // increment when mPipeSink is assigned
37    size_t          mFrameCount;        // number of frames per fast capture buffer
38    audio_track_cblk_t* mCblk;          // control block for the single fast client, or NULL
39
40    // Extends FastThreadState::Command
41    static const Command
42        // The following commands also process configuration changes, and can be "or"ed:
43        READ = 0x8,                     // read from input source
44        WRITE = 0x10,                   // write to pipe sink
45        READ_WRITE = 0x18;              // read from input source and write to pipe sink
46
47    // never returns NULL; asserts if command is invalid
48    static const char *commandToString(Command command);
49};  // struct FastCaptureState
50
51}   // namespace android
52
53#endif  // ANDROID_AUDIO_FAST_CAPTURE_STATE_H
54