blob: ac15e7c19eee41512bbd28df51e5669848450d25 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_AUDIO_FAST_MIXER_DUMP_STATE_H
#define ANDROID_AUDIO_FAST_MIXER_DUMP_STATE_H
#include <stdint.h>
#include "Configuration.h"
#include "FastThreadDumpState.h"
#include "FastMixerState.h"
namespace android {
// Describes the underrun status for a single "pull" attempt
enum FastTrackUnderrunStatus {
UNDERRUN_FULL, // framesReady() is full frame count, no underrun
UNDERRUN_PARTIAL, // framesReady() is non-zero but < full frame count, partial underrun
UNDERRUN_EMPTY, // framesReady() is zero, total underrun
};
// Underrun counters are not reset to zero for new tracks or if track generation changes.
// This packed representation is used to keep the information atomic.
union FastTrackUnderruns {
FastTrackUnderruns() { mAtomic = 0;
COMPILE_TIME_ASSERT_FUNCTION_SCOPE(sizeof(FastTrackUnderruns) == sizeof(uint32_t)); }
FastTrackUnderruns(const FastTrackUnderruns& copyFrom) : mAtomic(copyFrom.mAtomic) { }
FastTrackUnderruns& operator=(const FastTrackUnderruns& rhs)
{ if (this != &rhs) mAtomic = rhs.mAtomic; return *this; }
struct {
#define UNDERRUN_BITS 10
#define UNDERRUN_MASK ((1 << UNDERRUN_BITS) - 1)
uint32_t mFull : UNDERRUN_BITS; // framesReady() is full frame count
uint32_t mPartial : UNDERRUN_BITS; // framesReady() is non-zero but < full frame count
uint32_t mEmpty : UNDERRUN_BITS; // framesReady() is zero
FastTrackUnderrunStatus mMostRecent : 2; // status of most recent framesReady()
} mBitFields;
private:
uint32_t mAtomic;
};
// Represents the dump state of a fast track
struct FastTrackDump {
FastTrackDump() : mFramesReady(0) { }
/*virtual*/ ~FastTrackDump() { }
FastTrackUnderruns mUnderruns;
size_t mFramesReady; // most recent value only; no long-term statistics kept
};
struct FastMixerDumpState : FastThreadDumpState {
FastMixerDumpState();
/*virtual*/ ~FastMixerDumpState();
void dump(int fd) const; // should only be called on a stable copy, not the original
uint32_t mWriteSequence; // incremented before and after each write()
uint32_t mFramesWritten; // total number of frames written successfully
uint32_t mNumTracks; // total number of active fast tracks
uint32_t mWriteErrors; // total number of write() errors
uint32_t mSampleRate;
size_t mFrameCount;
uint32_t mTrackMask; // mask of active tracks
FastTrackDump mTracks[FastMixerState::kMaxFastTracks];
};
} // android
#endif // ANDROID_AUDIO_FAST_MIXER_DUMP_STATE_H
|
