Thanks Glenn,
Given below is the information related to your questions from dumpsys.
Android version : 4.4.2
Sample rate : 48000 Hz
bps : 16 bits
frame format: stereo
frames/buffer : 128
Clients:
pid: 784
pid: 1052
Notification Clients:
pid: 142
pid: 784
pid: 1052
Global session refs:
session pid count
5 1052 1
12 784 1
15 784 1
16 784 1
Hardware status: 0
Standby Time mSec: 3000
Output thread 0xb711e050 internals
Normal frame count: 1024
last write occurred (msecs): 11
total writes: 801
delayed writes: 0
blocked in write: 0
suspend count: 0
mix buffer : 0xb7109ef0
Fast track availMask=0xf8
io handle: 2
TID: 812
standby: 0
Sample rate: 48000
HAL frame count: 128
Channel Count: 2
Channel Mask: 0x00000003
Format: 1
Frame size: 4
Pending setParameters commands:
Index Command
Pending config events:
AudioMixer tracks: 0000000f
FastMixer command=MIX_WRITE writeSequence=12876 framesWritten=824064
numTracks=1 writeErrors=0 underruns=1629 overruns=1567
sampleRate=48000 frameCount=128 measuredWarmup=147 ms,
warmupCycles=8
mixPeriod=2.67 ms
Simple moving statistics over last 0.7 seconds:
wall clock time in ms per mix cycle:
mean=2.94 min=0.36 max=131.38 stddev=8.17
raw CPU load in us per mix cycle:
mean=1059 min=0 max=2790 stddev=344
Fast tracks: kMaxFastTracks=8 activeMask=0x1
Index Active Full Partial Empty Recent Ready
0 yes 252 0 2 full 1664
1 no 0 0 0 full 0
2 no 17 0 63 empty 0
3 no 0 0 0 full 0
4 no 0 0 0 full 0
5 no 0 0 0 full 0
6 no 0 0 0 full 0
7 no 0 0 0 full 0
Output thread 0xb711e050 stream volumes in dB:
0:-4.7, 1:-17, 2:-11, 3:-7.4, 4:-11, 5:-11, 6:0, 7:-17, 8:-11, 9:-7.4
Output thread 0xb711e050 tracks
Name Client Type Fmt Chn mask Session fCount S F SRate L dB R dB
Server Main buf Aux Buf Flags UndFrmCnt
F 1 1052 0 00000001 00000001 5 128 I 0 48000 -10 -10
00000000 B7109EF0 00000000 0x000 0
2 784 1 00000001 00000001 12 1395 S 1 44100 -Inf -Inf
00000573 B7109EF0 00000000 0x600 0
F 2 784 2 00000001 00000001 16 128 S 1 48000 0 0
00000880 B7109EF0 00000000 0x600 1408
1 784 1 00000001 00000001 15 1395 S 1 44100 -Inf -Inf
00000573 B7109EF0 00000000 0x600 0
Output thread 0xb711e050 active tracks
Name Client Type Fmt Chn mask Session fCount S F SRate L dB R dB
Server Main buf Aux Buf Flags UndFrmCnt
Normal mixer raw underrun counters: partial=0 empty=2
- 0 Effect Chains:
The difference I could see when tone is heard properly and when it's not is
the "UndFrmCnt". When the tone is proper UndFrmCnt is not incrementing.
On Friday, 14 March 2014 20:14:32 UTC+5:30, Glenn Kasten wrote:
>
> Please say which SoC, OEM device name/model, Android release version,
> and the audio output HAL configuration: number of HAL buffers, frames per
> buffer,
> sample rate in Hz, and frame format (e.g. stereo 16-bit PCM). Also
> please include the output of dumpsys media.audio_flinger while you are
> hearing glitches.
>
> On Friday, March 14, 2014 1:31:42 AM UTC-7, Mohan Kumar wrote:
>>
>> I seeing issues when I use fastmixer for output while I play short Tones
>> by pressing volume button, The output is having extra zeroes inserted
>> between the actual output which makes glitches in the output.
>>
>> How can we solve this issue?
>>
>
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