ralphy wrote:
>
>
> The bufferThreshold might be used to alleviate the startup problems with
> BBC sounds along with the current AAC decoder patch we're testing.
> I can't be sure it would help as I don't have access to the 320b@48K
> streams to test and it would likely depend on what stream format is
> selected in the BBC Sounds settings too.
>
>
I've added a Buffer threshold setting to BBC sounds and amended the
protocol handler. To be honest, it doesn't seem to have much impact.
In this trace I've set it to the bufferThreadhold to 4 seconds of audio,
which on the 320 streams is 160 kb (163840).
Here is the log trace from that, as you can see, the threshold setting
that is being applied, appears in the log as expected, but I don't
really understand what that means in this context as it doesn't seem to
be filling up the output buffer with 4 seconds of audio before the
underrun occurs. Sorry, if I misunderstood what was meant to occur.
As you can see following the underrun, both the input and output
buffers fill up and it is rock solid from there onwards.
Code:
--------------------
Feb 28 14:31:46 squeezeplay: DEBUG audio.decode - decode_start:705
decode_start
Feb 28 14:31:46 squeezeplay: INFO audio.decode - decode_start_handler:281
init decoder aac
Feb 28 14:31:46 squeezeplay: DEBUG audio.decode -
decode_output_set_track_gain:520 Track gain 65536
Feb 28 14:31:46 squeezeplay: DEBUG audio.decode -
decode_output_set_track_gain:524 Track clip range 7fffffff 80000000
Feb 28 14:31:46 squeezeplay: DEBUG audio.decode -
decode_set_track_polarity_inversion:529 Polarity inversion 0
Feb 28 14:31:46 squeezeplay: DEBUG audio.decode -
decode_set_output_channels:537 Output channels left 0, right 0
Feb 28 14:31:46 squeezeplay: INFO audio.decode - Playback.lua:477 connect
172.16.0.8:9000 GET /stream.mp3?player=00:04:20:2c:fa:10 HTTP/1.0^M
Feb 28 14:31:46 squeezeplay: DEBUG audio.decode - Playback.lua:194
source=stream
Feb 28 14:31:46 squeezeplay: DEBUG audio.decode - stream_connectL:506
streambuf connect 172.16.0.8:9000
Feb 28 14:31:46 squeezeplay: DEBUG audio.decode - Playback.lua:1262 stopping
local pause timer
Feb 28 14:31:46 squeezeplay: DEBUG audio.decode - Playback.lua:1192 gainL,
gainR: 555 555
Feb 28 14:31:48 squeezeplay: DEBUG audio.decode - Playback.lua:397 resume
decoder, 32768 bytes buffered, decode threshold 2048
Feb 28 14:31:48 squeezeplay: DEBUG audio.decode - decode_resume_decoder:580
decode_resume_decoder
Feb 28 14:31:48 squeezeplay: DEBUG audio.decode -
decode_resume_decoder_handler:122 resume_decoder decode state: 1 audio state 0
Feb 28 14:31:48 squeezeplay: DEBUG audio.decode - debug_fullness:112
fullness: 32768 / 0 | 1.04% / 0.00%
Feb 28 14:31:48 squeezeplay: DEBUG audio.decode - decode_output_samples:280
first buffer sample_rate=48000
Feb 28 14:31:48 squeezeplay: INFO audio.decode - Playback.lua:448 2.7%/0.5%
Feb 28 14:31:48 squeezeplay: DEBUG audio.decode - Playback.lua:424 resume
audio bytesReceivedL=223552 outputTime=320 threshold=163840
Feb 28 14:31:48 squeezeplay: DEBUG audio.decode - decode_resume_audio:601
decode_resume_audio start_jiffies=0
Feb 28 14:31:48 squeezeplay: DEBUG audio.decode -
decode_resume_audio_handler:133 decode_resume_audio_handler start_jiffies=0
Feb 28 14:31:48 squeezeplay: DEBUG audio.decode - debug_fullness:112
fullness: 178496 / 131072 | 5.67% / 3.72%
Feb 28 14:31:48 squeezeplay: DEBUG audio.decode -
decode_resume_audio_handler:146 resume_audio decode state: 1 audio state 40
Feb 28 14:31:48 squeezeplay: DEBUG audio.decode - Playback.lua:381 status
TRACK STARTED (elapsed: 35)
Feb 28 14:31:49 squeezeplay: INFO audio.decode - Playback.lua:448 14.8%/2.5%
Feb 28 14:31:50 squeezeplay: playback_callback:346 Audio underrun: used 448
frames, requested 480 frames. elapsed samples 83520
Feb 28 14:31:50 squeezeplay: INFO audio.decode - Playback.lua:364 OUTPUT
UNDERRUN
Feb 28 14:31:50 squeezeplay: DEBUG audio.decode - decode_pause_audio:624
decode_pause_audio interval_ms=0
Feb 28 14:31:50 squeezeplay: DEBUG audio.decode -
decode_pause_audio_handler:156 decode_pause_handler interval=0
Feb 28 14:31:50 squeezeplay: DEBUG audio.decode -
decode_pause_audio_handler:171 pause_audio decode state: 1 audio state 0
Feb 28 14:31:50 squeezeplay: DEBUG audio.decode - Playback.lua:855 strm p
Feb 28 14:31:50 squeezeplay: DEBUG audio.decode - Playback.lua:1262 stopping
local pause timer
Feb 28 14:31:50 squeezeplay: DEBUG audio.decode - decode_pause_audio:624
decode_pause_audio interval_ms=0
Feb 28 14:31:50 squeezeplay: DEBUG audio.decode -
decode_pause_audio_handler:156 decode_pause_handler interval=0
Feb 28 14:31:50 squeezeplay: DEBUG audio.decode -
decode_pause_audio_handler:171 pause_audio decode state: 1 audio state 0
Feb 28 14:31:50 squeezeplay: DEBUG audio.decode - Playback.lua:1262 stopping
local pause timer
Feb 28 14:31:50 squeezeplay: DEBUG audio.decode - Playback.lua:1192 gainL,
gainR: 0 0
Feb 28 14:31:50 squeezeplay: DEBUG audio.decode - Playback.lua:855 strm u
Feb 28 14:31:50 squeezeplay: DEBUG audio.decode - Playback.lua:991 resume
unpause
Feb 28 14:31:50 squeezeplay: DEBUG audio.decode - decode_resume_audio:601
decode_resume_audio start_jiffies=0
Feb 28 14:31:50 squeezeplay: DEBUG audio.decode -
decode_resume_audio_handler:133 decode_resume_audio_handler start_jiffies=0
Feb 28 14:31:50 squeezeplay: DEBUG audio.decode - debug_fullness:112
fullness: 910447 / 82944 | 28.94% / 2.35%
Feb 28 14:31:50 squeezeplay: DEBUG audio.decode -
decode_resume_audio_handler:146 resume_audio decode state: 1 audio state 40
Feb 28 14:31:50 squeezeplay: DEBUG audio.decode - Playback.lua:1262 stopping
local pause timer
Feb 28 14:31:50 squeezeplay: DEBUG audio.decode - Playback.lua:1192 gainL,
gainR: 555 555
Feb 28 14:31:51 squeezeplay: INFO audio.decode - Playback.lua:448 33.6%/5.4%
Feb 28 14:31:52 squeezeplay: INFO audio.decode - Playback.lua:448 42.3%/7.9%
Feb 28 14:31:53 squeezeplay: INFO audio.decode - Playback.lua:448
50.6%/11.3%
Feb 28 14:31:54 squeezeplay: INFO audio.decode - Playback.lua:448
63.9%/12.7%
Feb 28 14:31:55 squeezeplay: INFO audio.decode - Playback.lua:448 78.2%/9.8%
Feb 28 14:31:56 squeezeplay: INFO audio.decode - Playback.lua:448
85.7%/15.4%
Feb 28 14:31:57 squeezeplay: INFO audio.decode - Playback.lua:448
99.7%/17.3%
Feb 28 14:31:58 squeezeplay: INFO audio.decode - Playback.lua:448
99.7%/29.0%
Feb 28 14:31:59 squeezeplay: INFO audio.decode - Playback.lua:448
99.6%/41.0%
Feb 28 14:32:00 squeezeplay: INFO audio.decode - Playback.lua:448
99.7%/52.0%
Feb 28 14:32:01 squeezeplay: INFO audio.decode - Playback.lua:448
99.7%/63.9%
Feb 28 14:32:03 squeezeplay: INFO audio.decode - Playback.lua:448
99.6%/76.8%
Feb 28 14:32:04 squeezeplay: INFO audio.decode - Playback.lua:448
99.7%/88.1%
Feb 28 14:32:05 squeezeplay: INFO audio.decode - Playback.lua:448
99.6%/99.0%
Feb 28 14:32:06 squeezeplay: INFO audio.decode - Playback.lua:448
100.0%/97.9%
Feb 28 14:32:07 squeezeplay: INFO audio.decode - Playback.lua:448
100.0%/97.6%
Feb 28 14:32:08 squeezeplay: INFO audio.decode - Playback.lua:448
99.9%/98.0%
Feb 28 14:32:09 squeezeplay: INFO audio.decode - Playback.lua:448
100.0%/97.4%
Feb 28 14:32:10 squeezeplay: DEBUG audio.decode - Playback.lua:1262 stopping
local pause timer
Feb 28 14:32:10 squeezeplay: DEBUG audio.decode - Playback.lua:1192 gainL,
gainR: 0 0
Feb 28 14:32:10 squeezeplay: DEBUG audio.decode - Playback.lua:855 strm p
Feb 28 14:32:10 squeezeplay: DEBUG audio.decode - Playback.lua:1262 stopping
local pause timer
Feb 28 14:32:10 squeezeplay: DEBUG audio.decode - decode_pause_audio:624
decode_pause_audio interval_ms=0
Feb 28 14:32:10 squeezeplay: DEBUG audio.decode -
decode_pause_audio_handler:156 decode_pause_handler interval=0
Feb 28 14:32:10 squeezeplay: DEBUG audio.decode -
decode_pause_audio_handler:171 pause_audio decode state: 1 audio state 0
Feb 28 14:32:10 squeezeplay: DEBUG audio.decode - Playback.lua:855 strm q
Feb 28 14:32:10 squeezeplay: DEBUG audio.decode - Playback.lua:1262 stopping
local pause timer
Feb 28 14:32:10 squeezeplay: DEBUG audio.decode - decode_stop:667 decode_stop
--------------------
As far as I'm concerned the ramp up audio underruns really aren't that
much of a problem, they don't always happen, and now that the output
buffer is filling up correctly they don't occur again once the stream is
underway.
EXPECTINGTOFLY PLUGINS :
- *BBC Sounds* :
https://github.com/expectingtofly/LMS_BBC_Sounds_Plugin
- *BBC Sounds Wiki* :
https://github.com/expectingtofly/LMS_BBC_Sounds_Plugin/wiki
- *Virgin Radio (UK)* :
https://github.com/expectingtofly/LMS_Virgin_Radio_Plugin
- *Times Radio* :
https://github.com/expectingtofly/LMS_TIMES_RADIO_PLUGIN
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