Nabble - Ecasound - General

strategy for RT commands that produce audio dropouts?

2008-09-05T16:12:51Z

Hi All,

I read in Ecasound's manpage that it is not possible to use the ctrl-select command on a connected chain setup without an audio dropout. Does that mean there is no way to change controller parameters in real time without an audio dropout?
Thanks,
Francis

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Fwd: ecasound stop unexpectedly... more info needed

2008-09-05T15:31:27Z

---------- Forwarded message ----------
From: francis keyes <fkeymo@...>
Date: Fri, Sep 5, 2008 at 7:27 PM
Subject: Re: ecasound stop unexpectedly... more info needed
To: Kai Vehmanen <kvehmanen@...>

Hi,

There is no unusual output from jackd. The ecasound logfile is very long. I have pasted the begining and the end below, cutting out a big chunk from the middle. This time when running the code I included a break statement if the engine-status command returns anything other than "running".... so I never had to hit Control-c to stop it. This time it ran for about 5 seconds before stopping. I have included the code again below the log file output. Maybe you can try it on a system and see what you get?
Thanks so much,
Francis

ECASOUND_LOGFILE:

Fri Sep 5 19:16:53 2008
Opening logfile "/root/eca-example/ecalog" for ecasound-2.4.6.1 (logger=0x8279b70, pid=10912):
[SUBSYST.] (eca-session) Session created <0>
[SUBSYST.] (eca-chainsetup) Chainsetup created (cmdline) <1>
[SYSTEM ] (audioio-db-server) constructor <2>
[SYSTEM ] (eca-chainsetup) Rtcaps detected. <3>
[SYSTEM ] (eca-chainsetup-parser) Interpreting object option "-f:s16_le,2,44100,i". <4>
[OBJECTS ] (eca-chainsetup-parser) Changed active format to (bits/channels/srate/interleave): s16_le/2/44100/i <5>
[OBJECTS ] (eca-chainsetup) sample rate change, chainsetup command-line-setup to rate 44100. <6>
[SYSTEM ] (eca-chainsetup-parser) Interpreting object option "-z:mixmode,avg". <7>
[SYSTEM ] (eca-static-object-maps) register_chain_operator_objects() <8>
[SYSTEM ] (eca-static-object-maps) register_controller_objects() <9>
[SYSTEM ] (eca-chain) constructor: CHAIN <10>
[OBJECTS ] (eca-chainsetup) Chain "default" created. <11>
[INFO    ] (eca-session) Note! Unable to create a valid chainsetup from the command-line arguments. <12>
[SYSTEM ] (eca-control) ECA_CONTROL constructor <13>
[OBJECTS ] (eca-control) command: debug 256 <14>
[EIAM    ] (eca-control) Debug level set to 256. <15>
[OBJECTS ] (eca-control) command: int-set-float-to-string-precision 17 <16>
[OBJECTS ] (eca-control) command: int-output-mode-wellformed <17>
Closing logfile (logger=0x8279b70, pid=10912).
---------------------------------------------------------------------
Fri Sep 5 19:16:53 2008
Opening logfile "/root/eca-example/ecalog" for ecasound-2.4.6.1 (logger=0x8279ad0, pid=10912):
[EIAM    ] (eca-control) - <18>
[OBJECTS ] (eca-control) command: cs-add waveup_cs <19>
[SUBSYST.] (eca-chainsetup) Chainsetup created (empty) <20>
[SYSTEM ] (audioio-db-server) constructor <21>
[SYSTEM ] (eca-chainsetup) Rtcaps detected. <22>
[SYSTEM ] (eca-chainsetup-parser) Interpreting object option "-f:s16_le,2,44100,i". <23>
[OBJECTS ] (eca-chainsetup-parser) Changed active format to (bits/channels/srate/interleave): s16_le/2/44100/i <24>
[OBJECTS ] (eca-chainsetup) sample rate change, chainsetup to rate 44100. <25>
[SYSTEM ] (eca-chainsetup-parser) Interpreting object option "-z:mixmode,avg". <26>
[INFO    ] (eca-control-objects) Added a new chainsetup with name "waveup_cs". <27>
[EIAM    ] (eca-control) - <28>
[OBJECTS ] (eca-control) command: c-add osc1 <29>
[SYSTEM ] (eca-chain) constructor: CHAIN <30>
[OBJECTS ] (eca-chainsetup) Chain "osc1" created. <31>
[INFO    ] (eca-control-objects) Added chains: osc1. <32>
[EIAM    ] (eca-control) - <33>
[OBJECTS ] (eca-control) command: ai-add null <34>
[SYSTEM ] (eca-chainsetup-parser) Interpreting object option "-i:null". <35>
[SYSTEM ] (eca-static-object-maps) register_audio_io_rt_objects() <36>
[SYSTEM ] (eca-static-object-maps) register_audio_io_nonrt_objects() <37>
[OBJECTS ] (eca-static-object-maps) All libsndfile supported extensions: aiff,au,avr,caf,htk,iff,mat,mat,paf,pvf,raw,sd2,sds,sf,voc,w64,wav,wav,wav,xi, <38>
[OBJECTS ] (eca-object-factory) Object "-i:null" created, type "Null audio object". Has 1 parameter(s). <39>
[SYSTEM ] (eca-chainsetup-parser) adding file "null". <40>
[OBJECTS ] (audioio) set srate, aobj 'Null audio object:null' to 44100. <41>
[OBJECTS ] (audioio-db-client) DB-client created for null. <42>
[OBJECTS ] (audioio) set srate, aobj 'DB => Null audio object:uninitialized' to 44100. <43>
[OBJECTS ] (audioio) set srate, aobj 'Null audio object:null' to 44100. <44>
[OBJECTS ] (audioio) set srate, aobj 'Null audio object:null' to 44100. <45>
[SYSTEM ] (eca-chainsetup) Assigning file to chains: osc1 <46>
[INFO    ] (eca-control-objects) Added audio input "null". <47>
[EIAM    ] (eca-control) - <48>
[OBJECTS ] (eca-control) command: ao-add jack_generic,osc1 <49>
[SYSTEM ] (eca-chainsetup-parser) Interpreting object option "-o:jack_generic,osc1". <50>
[OBJECTS ] (eca-object-factory) Object "-o:jack_generic,osc1" created, type "JACK interface". Has 1 parameter(s). <51>
[SYSTEM ] (eca-chainsetup-parser) adding file "jack_generic". <52>
[OBJECTS ] (audioio) set srate, aobj 'JACK interface:jack_generic' to 44100. <53>
[SYSTEM ] (audioio_jack_manager) constructor <54>
[SYSTEM ] (eca-chainsetup) Creating object manager 'jack' for aio 'JACK interface'. <55>
[SYSTEM ] (audioio_jack_manager) register object jack_generic <56>
[SYSTEM ] (audioio_jack) setting manager to jack <57>
[SYSTEM ] (eca-chainsetup) Registered audio i/o manager 'jack' as the current engine driver. <58>
[SYSTEM ] (eca-chainsetup) Assigning file to chains: osc1 <59>
[INFO    ] (eca-control-objects) Added audio output "jack_generic,osc1". <60>
[EIAM    ] (eca-control) - <61>
[OBJECTS ] (eca-control) command: cop-add -el:sine_fcac,0,0 <62>
[SYSTEM ] (eca-chainsetup-parser) Interpreting object option "-el:sine_fcac,0,0". <63>
[SYSTEM ] (eca-static-object-maps) register_ladspa_plugin_objects() <64>
[OBJECTS ] (eca-static-object-maps) Unable to open plugin file "/usr/lib/ladspa/ladspa-rubberband.cat". <65>
[OBJECTS ] (eca-static-object-maps) Unable to open plugin file "/usr/lib/ladspa/blop_files". <66>
[OBJECTS ] (eca-static-object-maps) Unable to open plugin file "/usr/lib/ladspa/jamincont_1912.la". <67>
[INFO    ] (eca-object-map) WARNING: Keyword plate doesn't match to regex ^plate$ for object 'Plate reverb' (). <68>
[OBJECTS ] (eca-object-factory) Creating LADSPA-plugin "Sine Oscillator (Freq:control, Amp:control)" <69>
[OBJECTS ] (eca-object-factory) Setting parameters: Frequency = 0.000, Amplitude = 0.000 <70>
[SYSTEM ] (eca-chainsetup) Adding chainop to chain osc1. <71>
[OBJECTS ] (audiofx) Setting samplerate to 44100 for object Sine Oscillator (Freq:control, Amp:control). Old value 384000. <72>
[EIAM    ] (eca-control) - <73>
[OBJECTS ] (eca-control) command: copp-select 1 <74>
[EIAM    ] (eca-control) - <75>
[OBJECTS ] (eca-control) command: copp-set 440.00000000000000000 <76>
[EIAM    ] (eca-control) - <77>
[OBJECTS ] (eca-control) command: copp-select 2 <78>
[EIAM    ] (eca-control) - <79>
[OBJECTS ] (eca-control) command: copp-set 5.0000000000000000000 <80>
[EIAM    ] (eca-control) - <81>
[OBJECTS ] (eca-control) command: cop-add -ea:150 <82>
[SYSTEM ] (eca-chainsetup-parser) Interpreting object option "-ea:150". <83>
[OBJECTS ] (eca-object-factory) Creating chain operator "Amplify" <84>
[OBJECTS ] (eca-object-factory) Setting parameters: amp-% = 150.000 <85>
[SYSTEM ] (eca-chainsetup) Adding chainop to chain osc1. <86>
[OBJECTS ] (audiofx) Setting samplerate to 44100 for object Amplify. Old value 384000. <87>
[EIAM    ] (eca-control) - <88>
[OBJECTS ] (eca-control) command: ctrl-add -kos:1,25,50,1,0 <89>
[SYSTEM ] (eca-chainsetup-parser) Interpreting object option "-kos:1,25,50,1,0". <90>
[OBJECTS ] (eca-object-factory) Creating controller source "Sine oscillator" <91>
[OBJECTS ] (eca-object-factory) Setting parameters: param-id = 1.000, range-low = 25.000, range-high = 50.000, freq = 1.000, phase-offset = 0.000 <92>
[OBJECTS ] (eca-chain) Source "Sine oscillator" connected to target "Amplify". Current source value is 0.50 and target 150.00. <93>
[EIAM    ] (eca-control) - <94>
[OBJECTS ] (eca-control) command: ctrlp-select 4 <95>
[EIAM    ] (eca-control) - <96>
[OBJECTS ] (eca-control) command: ctrlp-set 1.000000000000000000 <97>
[EIAM    ] (eca-control) - <98>
[OBJECTS ] (eca-control) command: cs-connect <99>
[SUBSYST.] (eca-session) Connecting chainsetup <100>
[OBJECTS ] (eca-chainsetup) jackd buffersize check returned 1024. <101>
[SYSTEM ] (eca-chainsetup) overriding buffersize. <102>
[SYSTEM ] (eca-chainsetup) bmode-selection case-4 <103>
[INFO    ] (eca-chainsetup) 'rtlowlatency' buffering mode selected. <104>
[SYSTEM ] (eca-chainsetup) Set buffering parameters to:
--cut--
buffersize: 256
raised_priority: 1
sched_priority: 50
double buffering: 1
double buffer size: 100000
max buffers: 0
--cut-- <105>
[SYSTEM ] (eca-chainsetup) Memory locked! <106>
[OBJECTS ] (audioio-db-client) open null. <107>
[OBJECTS ] (audioio) set srate, aobj 'DB => Null audio object:null' to 44100. <108>
[OBJECTS ] (audioio) set srate, aobj 'Null audio object:null' to 44100. <109>
[OBJECTS ] (audioio) set srate, aobj 'Null audio object:null' to 44100. <110>
[SYSTEM ] (audioio-db-server) Registering client 0. Buffer count 97. <111>
[OBJECTS ] (audioio-db-client) seek null to pos 0.00. <112>
[OBJECTS ] (audioio-db-client) seek null to pos 0.00. <113>
[INFO    ] (eca-chainsetup) Audio object "null", mode "read".
(audio-io) Format: s16_le, channels 2, srate 44100, interleaved. <114>
[SYSTEM ] (audioio_jack) open <115>
[SYSTEM ] (audioio_jack_manager) open for client 1 <116>
[OBJECTS ] (audioio_jack_manager) [callback] ecasound: setting srate to 44100 <117>
[SYSTEM ] (audioio_jack_manager) register jack ports for client 1 <118>
[INFO    ] (eca-chainsetup) Audio object "jack_generic", mode "write".
(audio-io) Format: f32_le, channels 2, srate 44100, noninterleaved. <119>
[OBJECTS ] (eca-chainsetup) sample rate change, chainsetup waveup_cs to rate 44100. <120>
[OBJECTS ] (audioio) set srate, aobj 'DB => Null audio object:null' to 44100. <121>
[OBJECTS ] (audioio) set srate, aobj 'Null audio object:null' to 44100. <122>
[OBJECTS ] (audioio) set srate, aobj 'JACK interface:jack_generic' to 44100. <123>
[OBJECTS ] (eca-chain) sample rate change, chain 'osc1' object 'Sine Oscillator (Freq:control, Amp:control)' rate 44100. <124>
[OBJECTS ] (audiofx) Setting samplerate to 44100 for object Sine Oscillator (Freq:control, Amp:control). Old value 44100. <125>
[OBJECTS ] (eca-chain) sample rate change, chain 'osc1' object 'Amplify' rate 44100. <126>
[OBJECTS ] (audiofx) Setting samplerate to 44100 for object Amplify. Old value 44100. <127>
[OBJECTS ] (eca-chain) sample rate change, chain 'osc1' object 'Sine oscillator' rate 44100. <128>
[SUBSYST.] (eca-session) Chainsetup connected <129>
[INFO    ] (eca-control-objects) Connected chainsetup: "waveup_cs". <130>
[EIAM    ] (eca-control) - <131>
[OBJECTS ] (eca-control) command: start <132>
[SUBSYST.] (eca-control-base) Controller/Processing started <133>
[SYSTEM ] (eca-engine) ECA_ENGINE constructor <134>
[SYSTEM ] (eca-engine) Prefill loops: 3 (blocksize 1024). <135>
[OBJECTS ] (audiofx) (audiofx) Init w/ samplerate 44100 for object Sine Oscillator (Freq:control, Amp:control). <136>
[SYSTEM ] (audiofx_ladspa) Instantiated 2 LADSPA plugin(s), each with 0 audio input port(s) and 1 output port(s), to chain with 2 channel(s) and srate of 44100. <137>
[OBJECTS ] (osc-sine) (osc-sine) Sine oscillator created; frequency 1.000 and initial phase of 0.000. <138>
[SYSTEM ] (eca-chain) Initialized chain osc1 with 2 chainops and 1 gcontrollers. Sbuf points to 136895072. <139>
[SYSTEM ] (eca-control-base) Engine-thread pid: 10912 <140>
[SUBSYST.] (eca-engine) Engine init - Driver start <141>
[SYSTEM ] (audioio_jack_manager) driver exec <142>
[SYSTEM ] (audioio-db-server) start <143>
[EIAM    ] (eca-control) - <144>
[SYSTEM ] (audioio-db-server) Hey, in the I/O loop! <145>
[SYSTEM ] (audioio-db-server) Using idle timeout of 225000000 nsecs. <146>
[SYSTEM ] (audioio-db-server) starting processing <147>
[OBJECTS ] (eca-engine) prefilling i/o buffers. <148>
[OBJECTS ] (eca-engine) i/o buffers prefilled. <149>
[SYSTEM ] (audioio_jack) prepare / jack_generic <150>
[INFO    ] (eca-engine) Using realtime-scheduling (SCHED_FIFO:50). <151>
[SYSTEM ] (audioio_jack_manager) jack_activate() <152>
[OBJECTS ] (eca-engine) Request start <153>
[SYSTEM ] (audioio_jack_manager) driver start <154>
[SYSTEM ] (eca-engine) starting engine operation! <155>
[SYSTEM ] (audioio_jack) start / jack_generic <156>
[SYSTEM ] (eca-engine) conditional stop <157>
[SYSTEM ] (eca-engine) stopping engine operation! <158>
[SYSTEM ] (audioio_jack) stop / jack_generic <159>
[SYSTEM ] (audioio-db-server) stop <160>
[SYSTEM ] (eca-engine) Changed back to non-realtime scheduling SCHED_OTHER. <161>
[SYSTEM ] (eca-engine) Signaling stop <162>
[OBJECTS ] (eca-chainsetup) seek position, chainsetup 'waveup_cs' to pos in sec 268. <163>
[OBJECTS ] (audioio-db-client) seek null to pos 267.89. <164>
[OBJECTS ] (eca-chain) seek position, to pos 268. <165>
[SYSTEM ] (audioio-db-server) start <166>
[SYSTEM ] (audioio-db-server) starting processing <167>
[OBJECTS ] (eca-engine) prefilling i/o buffers. <168>
[OBJECTS ] (eca-engine) i/o buffers prefilled. <169>
[SYSTEM ] (audioio_jack) prepare / jack_generic <170>
[INFO    ] (eca-engine) Using realtime-scheduling (SCHED_FIFO:50). <171>
[SYSTEM ] (eca-engine) starting engine operation! <172>
[SYSTEM ] (audioio_jack) start / jack_generic <173>
[OBJECTS ] (eca-control) command: c-select osc1 <174>
[EIAM    ] (eca-control) - <175>
[OBJECTS ] (eca-control) command: cop-select 1 <176>
[EIAM    ] (eca-control) - <177>
[OBJECTS ] (eca-control) command: copp-select 1 <178>
[EIAM    ] (eca-control) - <179>
[OBJECTS ] (eca-control) command: copp-set 60.000000000000000000 <180>
[EIAM    ] (eca-control) - <181>
[OBJECTS ] (eca-control) command: c-select osc1 <182>
[EIAM    ] (eca-control) - <183>
[OBJECTS ] (eca-control) command: cop-select 1 <184>
[EIAM    ] (eca-control) - <185>
[OBJECTS ] (eca-control) command: copp-select 1 <186>
[EIAM    ] (eca-control) - <187>
[OBJECTS ] (eca-control) command: copp-set 61.000000000000000000 <188>
[EIAM    ] (eca-control) - <189>
[OBJECTS ] (eca-control) command: c-select osc1 <190>
[EIAM    ] (eca-control) - <191>
[OBJECTS ] (eca-control) command: cop-select 1 <192>
[EIAM    ] (eca-control) - <193>
[OBJECTS ] (eca-control) command: copp-select 1 <194>
[EIAM    ] (eca-control) - <195>
[OBJECTS ] (eca-control) command: copp-set 62.000000000000000000 <196>
[EIAM    ] (eca-control) - <197>
[OBJECTS ] (eca-control) command: c-select osc1 <198>
[EIAM    ] (eca-control) - <199>
[OBJECTS ] (eca-control) command: cop-select 1 <200>
[EIAM    ] (eca-control) - <201>
[OBJECTS ] (eca-control) command: copp-select 1 <202>
[EIAM    ] (eca-control) - <203>
[OBJECTS ] (eca-control) command: copp-set 63.000000000000000000 <204>
[EIAM    ] (eca-control) - <205>
[OBJECTS ] (eca-control) command: c-select osc1 <206>
[EIAM    ] (eca-control) - <207>
[OBJECTS ] (eca-control) command: cop-select 1 <208>
[EIAM    ] (eca-control) - <209>
[OBJECTS ] (eca-control) command: copp-select 1 <210>
[EIAM    ] (eca-control) - <211>
[OBJECTS ] (eca-control) command: copp-set 64.000000000000000000 <212>
[EIAM    ] (eca-control) - <213>
[OBJECTS ] (eca-control) command: c-select osc1 <214>
[EIAM    ] (eca-control) - <215>
[OBJECTS ] (eca-control) command: cop-select 1 <216>
[EIAM    ] (eca-control) - <217>
[OBJECTS ] (eca-control) command: copp-select 1 <218>
[EIAM    ] (eca-control) - <219>
[OBJECTS ] (eca-control) command: copp-set 65.000000000000000000 <220>
[EIAM    ] (eca-control) - <221>
[OBJECTS ] (eca-control) command: c-select osc1 <222>
[EIAM    ] (eca-control) - <223>
[OBJECTS ] (eca-control) command: cop-select 1 <224>
[EIAM    ] (eca-control) - <225>
[OBJECTS ] (eca-control) command: copp-select 1 <226>
[EIAM    ] (eca-control) - <227>
[OBJECTS ] (eca-control) command: copp-set 66.000000000000000000 <228>
[EIAM    ] (eca-control) - <229>
[OBJECTS ] (eca-control) command: c-select osc1 <230>
[EIAM    ] (eca-control) - <231>
[OBJECTS ] (eca-control) command: cop-select 1 <232>
[EIAM    ] (eca-control) - <233>
[OBJECTS ] (eca-control) command: copp-select 1 <234>
[EIAM    ] (eca-control) - <235>
[OBJECTS ] (eca-control) command: copp-set 67.000000000000000000 <236>
[EIAM    ] (eca-control) - <237>
[OBJECTS ] (eca-control) command: c-select osc1 <238>
[EIAM    ] (eca-control) - <239>
[OBJECTS ] (eca-control) command: cop-select 1 <240>
[EIAM    ] (eca-control) - <241>
[OBJECTS ] (eca-control) command: copp-select 1 <242>
[EIAM    ] (eca-control) - <243>
[OBJECTS ] (eca-control) command: copp-set 68.000000000000000000 <244>
[EIAM    ] (eca-control) - <245>
[OBJECTS ] (eca-control) command: c-select osc1 <246>
[EIAM    ] (eca-control) - <247>
[OBJECTS ] (eca-control) command: cop-select 1 <248>
[EIAM    ] (eca-control) - <249>
[OBJECTS ] (eca-control) command: copp-select 1 <250>
[EIAM    ] (eca-control) - <251>
[OBJECTS ] (eca-control) command: copp-set 69.000000000000000000 <252>
[EIAM    ] (eca-control) - <253>
[OBJECTS ] (eca-control) command: c-select osc1 <254>
[EIAM    ] (eca-control) - <255>
[OBJECTS ] (eca-control) command: cop-select 1 <256>
[EIAM    ] (eca-control) - <257>
[OBJECTS ] (eca-control) command: copp-select 1 <258>
[EIAM    ] (eca-control) - <259>
[OBJECTS ] (eca-control) command: copp-set 70.000000000000000000 <260>
[EIAM    ] (eca-control) - <261>
[OBJECTS ] (eca-control) command: c-select osc1 <262>
[EIAM    ] (eca-control) - <263>
[OBJECTS ] (eca-control) command: cop-select 1 <264>
[EIAM    ] (eca-control) - <265>
[OBJECTS ] (eca-control) command: copp-select 1 <266>
[EIAM    ] (eca-control) - <267>
[OBJECTS ] (eca-control) command: copp-set 71.000000000000000000 <268>
[EIAM    ] (eca-control) - <269>
[OBJECTS ] (eca-control) command: c-select osc1 <270>
[EIAM    ] (eca-control) - <271>
[OBJECTS ] (eca-control) command: cop-select 1 <272>
[EIAM    ] (eca-control) - <273>
[OBJECTS ] (eca-control) command: copp-select 1 <274>
[EIAM    ] (eca-control) - <275>
[OBJECTS ] (eca-control) command: copp-set 72.000000000000000000 <276>
[EIAM    ] (eca-control) - <277>
[OBJECTS ] (eca-control) command: c-select osc1 <278>
[EIAM    ] (eca-control) - <279>
[OBJECTS ] (eca-control) command: cop-select 1 <280>
[EIAM    ] (eca-control) - <281>
[OBJECTS ] (eca-control) command: copp-select 1 <282>
[EIAM    ] (eca-control) - <283>
[OBJECTS ] (eca-control) command: copp-set 73.000000000000000000 <284>
[EIAM    ] (eca-control) - <285>
[OBJECTS ] (eca-control) command: c-select osc1 <286>
[EIAM    ] (eca-control) - <287>
[OBJECTS ] (eca-control) command: cop-select 1 <288>
[EIAM    ] (eca-control) - <289>
[OBJECTS ] (eca-control) command: copp-select 1 <290>
[EIAM    ] (eca-control) - <291>
[OBJECTS ] (eca-control) command: copp-set 74.000000000000000000 <292>
[EIAM    ] (eca-control) - <293>
[OBJECTS ] (eca-control) command: c-select osc1 <294>
[EIAM    ] (eca-control) - <295>
[OBJECTS ] (eca-control) command: cop-select 1 <296>
[EIAM    ] (eca-control) - <297>
[OBJECTS ] (eca-control) command: copp-select 1 <298>
[EIAM    ] (eca-control) - <299>
[OBJECTS ] (eca-control) command: copp-set 75.000000000000000000 <300>
[EIAM    ] (eca-control) - <301>
[OBJECTS ] (eca-control) command: c-select osc1 <302>
[EIAM    ] (eca-control) - <303>
[OBJECTS ] (eca-control) command: cop-select 1 <304>
[EIAM    ] (eca-control) - <305>
[OBJECTS ] (eca-control) command: copp-select 1 <306>
[EIAM    ] (eca-control) - <307>
[OBJECTS ] (eca-control) command: copp-set 76.000000000000000000 <308>
[EIAM    ] (eca-control) - <309>
[OBJECTS ] (eca-control) command: c-select osc1 <310>
[EIAM    ] (eca-control) - <311>
[OBJECTS ] (eca-control) command: cop-select 1 <312>
[EIAM    ] (eca-control) - <313>
[OBJECTS ] (eca-control) command: copp-select 1 <314>
[EIAM    ] (eca-control) - <315>
[OBJECTS ] (eca-control) command: copp-set 77.000000000000000000 <316>
[EIAM    ] (eca-control) - <317>
[OBJECTS ] (eca-control) command: c-select osc1 <318>
[EIAM    ] (eca-control) - <319>
[OBJECTS ] (eca-control) command: cop-select 1 <320>
[EIAM    ] (eca-control) - <321>
[OBJECTS ] (eca-control) command: copp-select 1 <322>
[EIAM    ] (eca-control) - <323>
[OBJECTS ] (eca-control) command: copp-set 78.000000000000000000 <324>
[EIAM    ] (eca-control) - <325>
[OBJECTS ] (eca-control) command: c-select osc1 <326>
[EIAM    ] (eca-control) - <327>
[OBJECTS ] (eca-control) command: cop-select 1 <328>
[EIAM    ] (eca-control) - <329>
[OBJECTS ] (eca-control) command: copp-select 1 <330>
[EIAM    ] (eca-control) - <331>
[OBJECTS ] (eca-control) command: copp-set 79.000000000000000000 <332>
[EIAM    ] (eca-control) - <333>
[OBJECTS ] (eca-control) command: c-select osc1 <334>
[EIAM    ] (eca-control) - <335>
[OBJECTS ] (eca-control) command: cop-select 1 <336>
[EIAM    ] (eca-control) - <337>
[OBJECTS ] (eca-control) command: copp-select 1 <338>
[EIAM    ] (eca-control) - <339>
[OBJECTS ] (eca-control) command: copp-set 80.000000000000000000 <340>
[EIAM    ] (eca-control) - <341>
[OBJECTS ] (eca-control) command: c-select osc1 <342>
[EIAM    ] (eca-control) - <343>
[OBJECTS ] (eca-control) command: cop-select 1 <344>
[EIAM    ] (eca-control) - <345>
[OBJECTS ] (eca-control) command: copp-select 1 <346>
[EIAM    ] (eca-control) - <347>
[OBJECTS ] (eca-control) command: copp-set 81.000000000000000000 <348>
[EIAM    ] (eca-control) - <349>
[OBJECTS ] (eca-control) command: c-select osc1 <350>
[EIAM    ] (eca-control) - <351>
[OBJECTS ] (eca-control) command: cop-select 1 <352>
[EIAM    ] (eca-control) - <353>
[OBJECTS ] (eca-control) command: copp-select 1 <354>
[EIAM    ] (eca-control) - <355>
[OBJECTS ] (eca-control) command: copp-set 82.000000000000000000 <356>
[EIAM    ] (eca-control) - <357>
[OBJECTS ] (eca-control) command: c-select osc1 <358>
[EIAM    ] (eca-control) - <359>
[OBJECTS ] (eca-control) command: cop-select 1 <360>
[EIAM    ] (eca-control) - <361>
[OBJECTS ] (eca-control) command: copp-select 1 <362>
[EIAM    ] (eca-control) - <363>
[OBJECTS ] (eca-control) command: copp-set 83.000000000000000000 <364>
[EIAM    ] (eca-control) - <365>
[OBJECTS ] (eca-control) command: c-select osc1 <366>
[EIAM    ] (eca-control) - <367>
[OBJECTS ] (eca-control) command: cop-select 1 <368>
[EIAM    ] (eca-control) - <369>
[OBJECTS ] (eca-control) command: copp-select 1 <370>
[EIAM    ] (eca-control) - <371>
[OBJECTS ] (eca-control) command: copp-set 84.000000000000000000 <372>
[EIAM    ] (eca-control) - <373>
[OBJECTS ] (eca-control) command: c-select osc1 <374>
[EIAM    ] (eca-control) - <375>
[OBJECTS ] (eca-control) command: cop-select 1 <376>
[EIAM    ] (eca-control) - <377>
[OBJECTS ] (eca-control) command: copp-select 1 <378>
[EIAM    ] (eca-control) - <379>
[OBJECTS ] (eca-control) command: copp-set 85.000000000000000000 <380>
[EIAM    ] (eca-control) - <381>
[OBJECTS ] (eca-control) command: c-select osc1 <382>
[EIAM    ] (eca-control) - <383>
[OBJECTS ] (eca-control) command: cop-select 1 <384>
[EIAM    ] (eca-control) - <385>
[OBJECTS ] (eca-control) command: copp-select 1 <386>
[EIAM    ] (eca-control) - <387>
[OBJECTS ] (eca-control) command: copp-set 86.000000000000000000 <388>
[EIAM    ] (eca-control) - <389>
[OBJECTS ] (eca-control) command: c-select osc1 <390>
[EIAM    ] (eca-control) - <391>
[OBJECTS ] (eca-control) command: cop-select 1 <392>
[EIAM    ] (eca-control) - <393>
[OBJECTS ] (eca-control) command: copp-select 1 <394>
[EIAM    ] (eca-control) - <395>
[OBJECTS ] (eca-control) command: copp-set 87.000000000000000000 <396>
[EIAM    ] (eca-control) - <397>
[OBJECTS ] (eca-control) command: c-select osc1 <398>
[EIAM    ] (eca-control) - <399>
[OBJECTS ] (eca-control) command: cop-select 1 <400>
[EIAM    ] (eca-control) - <401>
[OBJECTS ] (eca-control) command: copp-select 1 <402>
[EIAM    ] (eca-control) - <403>
[OBJECTS ] (eca-control) command: copp-set 88.000000000000000000 <404>
[EIAM    ] (eca-control) - <405>
[OBJECTS ] (eca-control) command: c-select osc1 <406>
[EIAM    ] (eca-control) - <407>
[OBJECTS ] (eca-control) command: cop-select 1 <408>
[EIAM    ] (eca-control) - <409>
[OBJECTS ] (eca-control) command: copp-select 1 <410>
[EIAM    ] (eca-control) - <411>
[OBJECTS ] (eca-control) command: copp-set 89.000000000000000000 <412>
[EIAM    ] (eca-control) - <413>
[OBJECTS ] (eca-control) command: c-select osc1 <414>
[EIAM    ] (eca-control) - <415>
[OBJECTS ] (eca-control) command: cop-select 1 <416>
[EIAM    ] (eca-control) - <417>
[OBJECTS ] (eca-control) command: copp-select 1 <418>
[EIAM    ] (eca-control) - <419>
[OBJECTS ] (eca-control) command: copp-set 90.000000000000000000 <420>
[EIAM    ] (eca-control) - <421>
[OBJECTS ] (eca-control) command: c-select osc1 <422>
[EIAM    ] (eca-control) - <423>
[OBJECTS ] (eca-control) command: cop-select 1 <424>
[EIAM    ] (eca-control) - <425>
[OBJECTS ] (eca-control) command: copp-select 1 <426>
[EIAM    ] (eca-control) - <427>
[OBJECTS ] (eca-control) command: copp-set 91.000000000000000000 <428>
[EIAM    ] (eca-control) - <429>
[OBJECTS ] (eca-control) command: c-select osc1 <430>
[EIAM    ] (eca-control) - <431>
[OBJECTS ] (eca-control) command: cop-select 1 <432>
[EIAM    ] (eca-control) - <433>
[OBJECTS ] (eca-control) command: copp-select 1 <434>
[EIAM    ] (eca-control) - <435>
[OBJECTS ] (eca-control) command: copp-set 92.000000000000000000 <436>
[EIAM    ] (eca-control) - <437>
[OBJECTS ] (eca-control) command: c-select osc1 <438>
[EIAM    ] (eca-control) - <439>
[OBJECTS ] (eca-control) command: cop-select 1 <440>
[EIAM    ] (eca-control) - <441>
[OBJECTS ] (eca-control) command: copp-select 1 <442>
[EIAM    ] (eca-control) - <443>
[OBJECTS ] (eca-control) command: copp-set 93.000000000000000000 <444>
[EIAM    ] (eca-control) - <445>
[OBJECTS ] (eca-control) command: c-select osc1 <446>
[EIAM    ] (eca-control) - <447>
[OBJECTS ] (eca-control) command: cop-select 1 <448>
[EIAM    ] (eca-control) - <449>
[OBJECTS ] (eca-control) command: copp-select 1 <450>
[EIAM    ] (eca-control) - <451>
[OBJECTS ] (eca-control) command: copp-set 94.000000000000000000 <452>
[EIAM    ] (eca-control) - <453>
[OBJECTS ] (eca-control) command: c-select osc1 <454>
[EIAM    ] (eca-control) - <455>
[OBJECTS ] (eca-control) command: cop-select 1 <456>
[EIAM    ] (eca-control) - <457>
[OBJECTS ] (eca-control) command: copp-select 1 <458>
[EIAM    ] (eca-control) - <459>
[OBJECTS ] (eca-control) command: copp-set 95.000000000000000000 <460>
[EIAM    ] (eca-control) - <461>
[OBJECTS ] (eca-control) command: c-select osc1 <462>
[EIAM    ] (eca-control) - <463>
[OBJECTS ] (eca-control) command: cop-select 1 <464>
[EIAM    ] (eca-control) - <465>
[OBJECTS ] (eca-control) command: copp-select 1 <466>
[EIAM    ] (eca-control) - <467>
[OBJECTS ] (eca-control) command: copp-set 96.000000000000000000 <468>
[EIAM    ] (eca-control) - <469>
[OBJECTS ] (eca-control) command: c-select osc1 <470>
[EIAM    ] (eca-control) - <471>
[OBJECTS ] (eca-control) command: cop-select 1 <472>
[EIAM    ] (eca-control) - <473>
[OBJECTS ] (eca-control) command: copp-select 1 <474>
[EIAM    ] (eca-control) - <475>
[OBJECTS ] (eca-control) command: copp-set 97.000000000000000000 <476>
[EIAM    ] (eca-control) - <477>
[OBJECTS ] (eca-control) command: c-select osc1 <478>
[EIAM    ] (eca-control) - <479>
[OBJECTS ] (eca-control) command: cop-select 1 <480>
[EIAM    ] (eca-control) - <481>
[OBJECTS ] (eca-control) command: copp-select 1 <482>
[EIAM    ] (eca-control) - <483>
[OBJECTS ] (eca-control) command: copp-set 98.000000000000000000 <484>
[EIAM    ] (eca-control) - <485>
[OBJECTS ] (eca-control) command: c-select osc1 <486>
[EIAM    ] (eca-control) - <487>
[OBJECTS ] (eca-control) command: cop-select 1 <488>
[EIAM    ] (eca-control) - <489>
[OBJECTS ] (eca-control) command: copp-select 1 <490>
[EIAM    ] (eca-control) - <491>
[OBJECTS ] (eca-control) command: copp-set 99.000000000000000000 <492>
[EIAM    ] (eca-control) - <493>
[OBJECTS ] (eca-control) command: c-select osc1 <494>
[EIAM    ] (eca-control) - <495>
[OBJECTS ] (eca-control) command: cop-select 1 <496>
[EIAM    ] (eca-control) - <497>
[OBJECTS ] (eca-control) command: copp-select 1 <498>
[EIAM    ] (eca-control) - <499>

---------------------------------CUT OUT SECTION HERE-----------------------------------------------------------

[OBJECTS ] (eca-control) command: copp-select 1 <16469>
[EIAM    ] (eca-control) - <16470>
[OBJECTS ] (eca-control) command: copp-set 70.000000000000000000 <16471>
[EIAM    ] (eca-control) - <16472>
[OBJECTS ] (eca-control) command: c-select osc1 <16473>
[EIAM    ] (eca-control) - <16474>
[OBJECTS ] (eca-control) command: cop-select 1 <16475>
[EIAM    ] (eca-control) - <16476>
[OBJECTS ] (eca-control) command: copp-select 1 <16477>
[EIAM    ] (eca-control) - <16478>
[OBJECTS ] (eca-control) command: copp-set 69.000000000000000000 <16479>
[EIAM    ] (eca-control) - <16480>
[OBJECTS ] (eca-control) command: c-select osc1 <16481>
[EIAM    ] (eca-control) - <16482>
[OBJECTS ] (eca-control) command: cop-select 1 <16483>
[EIAM    ] (eca-control) - <16484>
[OBJECTS ] (eca-control) command: copp-select 1 <16485>
[EIAM    ] (eca-control) - <16486>
[OBJECTS ] (eca-control) command: copp-set 68.000000000000000000 <16487>
[EIAM    ] (eca-control) - <16488>
[OBJECTS ] (eca-control) command: c-select osc1 <16489>
[EIAM    ] (eca-control) - <16490>
[OBJECTS ] (eca-control) command: cop-select 1 <16491>
[EIAM    ] (eca-control) - <16492>
[OBJECTS ] (eca-control) command: copp-select 1 <16493>
[EIAM    ] (eca-control) - <16494>
[OBJECTS ] (eca-control) command: copp-set 67.000000000000000000 <16495>
[EIAM    ] (eca-control) - <16496>
[OBJECTS ] (eca-control) command: c-select osc1 <16497>
[EIAM    ] (eca-control) - <16498>
[OBJECTS ] (eca-control) command: cop-select 1 <16499>
[EIAM    ] (eca-control) - <16500>
[OBJECTS ] (eca-control) command: copp-select 1 <16501>
[EIAM    ] (eca-control) - <16502>
[OBJECTS ] (eca-control) command: copp-set 66.000000000000000000 <16503>
[EIAM    ] (eca-control) - <16504>
[OBJECTS ] (eca-control) command: c-select osc1 <16505>
[EIAM    ] (eca-control) - <16506>
[OBJECTS ] (eca-control) command: cop-select 1 <16507>
[EIAM    ] (eca-control) - <16508>
[OBJECTS ] (eca-control) command: copp-select 1 <16509>
[EIAM    ] (eca-control) - <16510>
[OBJECTS ] (eca-control) command: copp-set 65.000000000000000000 <16511>
[EIAM    ] (eca-control) - <16512>
[OBJECTS ] (eca-control) command: c-select osc1 <16513>
[EIAM    ] (eca-control) - <16514>
[OBJECTS ] (eca-control) command: cop-select 1 <16515>
[EIAM    ] (eca-control) - <16516>
[OBJECTS ] (eca-control) command: copp-select 1 <16517>
[EIAM    ] (eca-control) - <16518>
[OBJECTS ] (eca-control) command: copp-set 64.000000000000000000 <16519>
[EIAM    ] (eca-control) - <16520>
[OBJECTS ] (eca-control) command: c-select osc1 <16521>
[EIAM    ] (eca-control) - <16522>
[OBJECTS ] (eca-control) command: cop-select 1 <16523>
[EIAM    ] (eca-control) - <16524>
[OBJECTS ] (eca-control) command: copp-select 1 <16525>
[EIAM    ] (eca-control) - <16526>
[OBJECTS ] (eca-control) command: copp-set 63.000000000000000000 <16527>
[EIAM    ] (eca-control) - <16528>
[OBJECTS ] (eca-control) command: c-select osc1 <16529>
[EIAM    ] (eca-control) - <16530>
[OBJECTS ] (eca-control) command: cop-select 1 <16531>
[EIAM    ] (eca-control) - <16532>
[OBJECTS ] (eca-control) command: copp-select 1 <16533>
[EIAM    ] (eca-control) - <16534>
[OBJECTS ] (eca-control) command: copp-set 62.000000000000000000 <16535>
[EIAM    ] (eca-control) - <16536>
[OBJECTS ] (eca-control) command: c-select osc1 <16537>
[EIAM    ] (eca-control) - <16538>
[OBJECTS ] (eca-control) command: cop-select 1 <16539>
[EIAM    ] (eca-control) - <16540>
[OBJECTS ] (eca-control) command: copp-select 1 <16541>
[EIAM    ] (eca-control) - <16542>
[OBJECTS ] (eca-control) command: copp-set 61.000000000000000000 <16543>
[EIAM    ] (eca-control) - <16544>
[OBJECTS ] (eca-control) command: c-select osc1 <16545>
[EIAM    ] (eca-control) - <16546>
[OBJECTS ] (eca-control) command: cop-select 1 <16547>
[EIAM    ] (eca-control) - <16548>
[OBJECTS ] (eca-control) command: copp-select 1 <16549>
[EIAM    ] (eca-control) - <16550>
[OBJECTS ] (eca-control) command: copp-set 60.000000000000000000 <16551>
[EIAM    ] (eca-control) - <16552>
[OBJECTS ] (eca-control) command: engine-status <16553>
[EIAM    ] (eca-control) s stopped <16554>
[OBJECTS ] (eca-control) command: stop <16555>
[EIAM    ] (eca-control) - <16556>
[OBJECTS ] (eca-control) command: cs-disconnect <16557>
[SYSTEM ] (eca-control-base) Waiting for engine thread to exit. <16558>
[SYSTEM ] (eca-engine) ecasound_queue: exit! <16559>
[SYSTEM ] (audioio_jack_manager) driver exit <16560>
[SYSTEM ] (audioio_jack_manager) exit request in exec <16561>
[SYSTEM ] (audioio_jack_manager) jack_deactivate() <16562>
[SYSTEM ] (eca-engine) Signaling exit <16563>
[OBJECTS ] (eca-engine) Engine state when finishing: 4 <16564>
[SYSTEM ] (eca-control-base) Engine thread has exited succesfully. <16565>
[SYSTEM ] (eca-engine) ECA_ENGINE destructor <16566>
[SUBSYST.] (eca-engine) Engine exiting <16567>
[INFO    ] (eca-control-objects) Disconnecting chainsetup: "waveup_cs". <16568>
[SYSTEM ] (eca-chainsetup) Closing chainsetup "waveup_cs" <16569>
[SYSTEM ] (eca-chainsetup) Closing audio device/file "null". <16570>
[OBJECTS ] (audioio-db-client) close null. <16571>
[SYSTEM ] (eca-chainsetup) Closing audio device/file "jack_generic". <16572>
[SYSTEM ] (audioio_jack) close <16573>
[SYSTEM ] (audioio_jack_manager) unregister all jack ports for client 1 <16574>
[SYSTEM ] (audioio_jack_manager) close for client 1 <16575>
[SUBSYST.] (eca-session) Chainsetup disconnected <16576>
[EIAM    ] (eca-control) - <16577>
[OBJECTS ] (eca-control) command: cop-status <16578>
[EIAM    ] (eca-control) s ### Chain operator status (chainsetup 'waveup_cs') ###
Chain "osc1":
    1. Sine Oscillator (Freq:control, Amp:control): [1] Frequency 60.00000000000000000, [2] Amplitude 5.00000000000000000
    2. Amplify: [1] amp-% 25.87190270423889160 <16579>
[OBJECTS ] (eca-control) command: quit <16580>
[EIAM    ] (eca-control) - <16581>
[SYSTEM ] (eca-control) ECA_CONTROL destructor <16582>
[SYSTEM ] (eca-chainsetup) ECA_CHAINSETUP destructor! <16583>
[OBJECTS ] (eca-chainsetup) Deleting chain "default". <16584>
[SYSTEM ] (eca-chain) CHAIN destructor! <16585>
[SYSTEM ] (audioio-db-server) destructor <16586>
[SYSTEM ] (eca-chainsetup) ECA_CHAINSETUP destructor! <16587>
[OBJECTS ] (eca-chainsetup) Deleting chain "osc1". <16588>
[SYSTEM ] (eca-chain) CHAIN destructor! <16589>
[OBJECTS ] (eca-chainsetup) Deleting audio db-client "null". <16590>
[OBJECTS ] (audioio-db-client) destructor null. <16591>
[SYSTEM ] (audioio-db-server) unregister_client Null audio object. <16592>
[OBJECTS ] (eca-chainsetup) Deleting audio object "null". <16593>
[OBJECTS ] (eca-chainsetup) Deleting audio object "jack_generic". <16594>
[OBJECTS ] (eca-chainsetup) Deleting audio manager "jack". <16595>
[SYSTEM ] (audioio_jack_manager) destructor <16596>
[INFO    ] (audioio_jack_manager) Connection closed! <16597>
[SYSTEM ] (audioio-db-server) destructor <16598>

CODE:

#include <stdio.h>
#include <unistd.h>
#include <ecasoundc.h>
#include <unistd.h>             /*sleep */

//COMPILE: gcc -g -o example example.c `libecasoundc-config --cflags --lib`

int
main (int argc, char *argv[])
{

//start jack, omit this when starting jackd seperately
//system ("jackd -R -dalsa -dhw:0 -r44100 -p1024 -n2 2>&1 &");
sleep (3);
//ecasound stuff
eci_init ();
eci_command ("cs-add waveup_cs");

//oscillator 1
eci_command ("c-add osc1");
eci_command ("ai-add null");
eci_command ("ao-add jack_generic,osc1");
eci_command ("cop-add -el:sine_fcac,0,0");
eci_command ("copp-select 1");
eci_command_float_arg ("copp-set", 440);
eci_command ("copp-select 2");
eci_command_float_arg ("copp-set", 5);
eci_command ("cop-add -ea:150");
eci_command ("ctrl-add -kos:1,25,50,1,0");
eci_command ("ctrlp-select 4");
eci_command_float_arg ("ctrlp-set", 1);

eci_command ("cs-connect");
eci_command ("start");
usleep (500000);

//connect jack outputs
system ("jack_connect ecasound:osc1_1 alsa_pcm:playback_1");
usleep (500000);

while (1)
    {
      int i;

      for (i = 60; i <= 400; i++)
    {
          usleep(10000);
    eci_command ("c-select osc1");
    eci_command ("cop-select 1");
    eci_command ("copp-select 1");
    eci_command_float_arg ("copp-set", i);
    }
      for (i = 400; i >= 60;i--)
    {
          usleep(10000);
    eci_command ("c-select osc1");
    eci_command ("cop-select 1");
    eci_command ("copp-select 1");
    eci_command_float_arg ("copp-set", i);
    }

      eci_command ("engine-status");
      if (strcmp (eci_last_string (), "running") != 0) {
        puts ("ECASOUND STOPPED!");
    break;
      }
    }

eci_command ("stop");
eci_command ("cs-disconnect");
eci_command ("cop-status");
printf ("Chain operator status: %s", eci_last_string ());
eci_cleanup ();

return (0);
}

feature request: please separate normalization and histogram

2008-09-04T18:33:33Z

Hello All,

I didn't manage to separate histogram generation and normalization info -
I mean, it appears that they always come together as a result of '-ev'
switch:

"
(eca-chain) (audiofx) -- Amplitude statistics -----------------------------
Range, pos/neg, count,(%), ch1...n
Pos -1.0 dB: 4,0.000% 5,0.000%
Pos -2.0 dB: 43,0.000% 68,0.000%
Pos -4.0 dB: 1028,0.006% 1071,0.007%
Pos -8.0 dB: 48966,0.308% 47556,0.299%
Pos -16.0 dB: 1160168,7.303% 1155192,7.272%
Pos -32.0 dB: 4494766,28.294% 4508264,28.379%
Pos -64.0 dB: 1741875,10.965% 1735342,10.924%
Pos -inf.0 dB: 564683,3.555% 563595,3.548%
Neg -inf.0 dB: 438434,2.760% 437734,2.755%
Neg -64.0 dB: 1734430,10.918% 1731367,10.899%
Neg -32.0 dB: 4481504,28.210% 4495535,28.299%
Neg -16.0 dB: 1174825,7.395% 1164178,7.328%
Neg -8.0 dB: 44274,0.279% 44751,0.282%
Neg -4.0 dB: 924,0.006% 1239,0.008%
Neg -2.0 dB: 56,0.000% 68,0.000%
Neg -1.0 dB: 16,0.000% 31,0.000%
(audiofx) Peak amplitude, period: pos=0.96542 neg=0.99989.
(audiofx) Peak amplitude, all : pos=0.96542 neg=0.99989.
(audiofx) Clipped samples, period: pos=0 neg=0.
(audiofx) Clipped samples, all : pos=0 neg=0.
(audiofx) Max gain without clipping, all: 1.00011.
(audiofx) -- End of statistics --------------------------------
".

Histogram calculation is much more expensive that just finding max
amplitude, so performance-wise it makes sense to separate the
functionalities, especially in the light of our discussion of performance
impact of checking sample count not being zero :-).

Thanks,
Sergei.

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(audioio-loop) WARNING: Multiple writes without reads!

2008-09-04T03:00:41Z

I have the following ECS file:

#####################
### Start 001.ecs ###
#####################
-b:256 -r:50 -z:nointbuf -z:nodb -n:"ChainSetup" -X -z:noxruns -z:nopsr
-z:mixmode,sum

-a:1,1.1 -f:16,1,44100 -i:Vocal.wav
-a:2 -f:16,1,44100 -i:Guitar.wav,
-a:1.1.L -f:16,2,44100 -i:loop,101

-a:1,2,1.1.L -f:16,2,44100 -o:jack_alsa
-a:1.1 -f:16,2,44100 -o:loop,101

-a:1 -chmove:1,1 -chcopy:1,2 -epp:57 -efl:20000 -efh:248 -ea:247
-a:1.1 -chmove:1,1 -chcopy:1,2 -epp:54 -efl:20000 -efh:4 -ea:210
-a:2 -chmove:1,1 -chcopy:1,2 -epp:40 -efl:7213 -efh:4 -ea:351
-a:1.1.L -ete:38,10,99
#####################
### End 001.ecs ###
#####################

When I run it, then wait until the engine stops (both WAVS play to the
end), then I do 'setpos 0', then 't'... this is written to the console
over and over:

(audioio-loop) WARNING: Multiple writes without reads!

The effect (-ete:38,10,99) doesn't exist anymore (can't hear it).

It only happens when the audio files reach their full length and stop
playing (they're the same length), and then I do a "setpos 0", then
start the engine again.

Thanks,
Rocco

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Re: ecasound stop unexpectedly... more info needed

2008-09-03T15:49:54Z

Thanks for the response Kai,

I'm not runnng any other jack software so I don't think this is an issue with the jack Transport but I added your suggestion just to be safe.
I tested my example code an an older system I have access to and found that it ran flawlessly. This older system is a Fedora Core 5 machine with the following software versions:

kernel: 2.6.16-1.2080.16.rdt.rhfc5.ccrma
libecasoundc-2.4.6.1-1.fc5.ccrma
ecasound-devel-2.4.6.1-1.fc5.ccrma
ecasound-2.4.6.1-1.fc5.ccrma
jack-audio-connection-kit-0.101.1-12.fc5
qjackctl-0.2.20-5.fc5
jack-audio-connection-kit-devel-0.101.1-12.fc5
jack-audio-connection-kit-example-clients-0.101.1-12.fc5

Can you or anyone make sense of this? This application runs great on Fedora 5 machine with older ecasound versions but will not run on an updated Fedora 8 machine for more than about 10 seconds before Ecasound stops. What might be causing this?

Thank so much for taking time to read this and offering any ideas you may have,
Francis

On Tue, 2 Sep 2008, francis keyes wrote:

I set the ECASOUND_LOGFILE environment variable and found this after about 5 seconds in
operation:

[OBJECTS ] (eca-control) command: q <17850>

...after which there are a bunch of messages that indicate ecasound is stoppng. I definitely
haven't programmed in that command. Why would that show up?

one thing to check is JACK transport. By default ecasound reacts to transport changes (i.e. when some other JACK client changes transport state). You can disable this by issuing "cs-option -G:jack,ecasound,notransport" at start.

So in your example client, when someone stops the transport, the example client will break from the while loop. And when you call "eci_cleanup()"
in the end, that will internally send a "quit" to make the background ecasound process to terminate.

--

Re: dcop and ecasound

2008-09-03T14:33:32Z

That is strange, qtractor is not dcop aware.

-=Sean=-

----- Original Message ----
From: Kai Vehmanen <kvehmanen@...>
To: Sean Edwards <cybersean3000@...>
Cc: ecasound-list@...
Sent: Wednesday, September 3, 2008 4:08:34 PM
Subject: Re: [ecasound] dcop and ecasound

On Wed, 3 Sep 2008, Sean Edwards wrote:

> I am trying to launch synchronized playback of sound files with MIDI
> program change events. So far, I am able to read MIDI events with
> kaseq. I found Kai's qtecasound, but that hasn't been developed past
> qt-2. Does anybody know of Other than Rosegarden and qtecasound, is
> there a QT app that can do this?

Sooperlooper might be a good option:
http://www.essej.net/sooperlooper/

Other options:

- Qtractor
http://qtractor.sourceforge.net/qtractor-index.html
- LinuxSampler
http://www.linuxsampler.org/

... if these won't do, I'd ask about this on the linux-audio-user list.

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Re: dcop and ecasound

2008-09-03T14:00:42Z

On Wed, 3 Sep 2008, Sean Edwards wrote:

> I am trying to launch synchronized playback of sound files with MIDI
> program change events. So far, I am able to read MIDI events with
> kaseq. I found Kai's qtecasound, but that hasn't been developed past
> qt-2. Does anybody know of Other than Rosegarden and qtecasound, is
> there a QT app that can do this?

Sooperlooper might be a good option:
http://www.essej.net/sooperlooper/

Other options:

- Qtractor
http://qtractor.sourceforge.net/qtractor-index.html
- LinuxSampler
http://www.linuxsampler.org/

... if these won't do, I'd ask about this on the linux-audio-user list.

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dcop and ecasound

2008-09-03T13:42:37Z

I am trying to launch synchronized playback of sound files with MIDI program change events. So far, I am able to read MIDI events with kaseq. I found Kai's qtecasound, but that hasn't been developed past qt-2. Does anybody know of Other than Rosegarden and qtecasound, is there a QT app that can do this?

-=Sean=-

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Re: ecasound-2.5.2 wrongly calculates "Max gain without clipping"

2008-09-03T13:18:08Z

Hi,

On Tue, 2 Sep 2008, Sergei Steshenko wrote:

> (audiofx) Peak amplitude, period: pos=1.03681 neg=1.19776.
> (audiofx) Peak amplitude, all : pos=1.03681 neg=1.19776.
[...]
> (audiofx) Max gain without clipping, all: 1.00000.
> Max gain without clipping of 1.00000 is obviously wrong, it should rather
> be 1 / 1.19776 .

that's a good point. Historically "-ev" was used to monitor live inputs
(where a less than zero max-gain didn't make sense), but it's true there's
really no sense in capping this value to 1.0. I'll submit a patch for
this to the git tree.

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Re: ecasound-2.5.2 - strange effect of '-ea:amplify-100 -ev'

2008-09-03T13:06:19Z

Hi,

On Tue, 2 Sep 2008, Sergei Steshenko wrote:

> Oh, boy ...
>
> It's a bug in command line parser - the latter should have told me that it
> doesn't like the 'amplify' word.
>
> With '-ea:100 -ev' it works OK.

yes. If you provide non-numerical args, they will be interpreted as zero.
The code should detect these cases and emit a warning/error. We've been
tracking this issue with 'edi-34' development item - 'Better checks for
parsing operator arguments.', submitted originally by Janne Halttunen on
28.10.2002. See http://eca.cx/ecasound/files/edi-list.txt

And I agree it sucks that six years later this still hasn't been fixed.

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Re: ecasound stop unexpectedly... more info needed

2008-09-03T13:00:51Z

Hi,

On Tue, 2 Sep 2008, francis keyes wrote:

> I set the ECASOUND_LOGFILE environment variable and found this after about 5 seconds in
> operation:
>
> [OBJECTS ] (eca-control) command: q <17850>
>
> ...after which there are a bunch of messages that indicate ecasound is stoppng. I definitely
> haven't programmed in that command. Why would that show up?

one thing to check is JACK transport. By default ecasound reacts to
transport changes (i.e. when some other JACK client changes transport
state). You can disable this by issuing "cs-option
-G:jack,ecasound,notransport" at start.

So in your example client, when someone stops the transport, the example
client will break from the while loop. And when you call "eci_cleanup()"
in the end, that will internally send a "quit" to make the background
ecasound process to terminate.

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Re: [LAU] mix lof with ecasound

2008-09-03T10:07:20Z

becks <becks@...> wrote:

> Hi all,
> i have many .lof[1] files, and i want a final mix (audacity can open
> .lof file, but i need one batch script)
>
> ex:
> $ cat ab.lof
> window
> file "a0.wav" offset 0.000000
> file "b0.wav" offset 396.000000
> file "a1".wav offset 0.000000
> file "b1.wav" offset 396.000000
>
> i can make a mix with something like:
> $ ecasound -a:1 -i a0.wav -a:2 -i a1.wav -a:all -o output.wav
>
> my problem is offset, i think b0 (and b1) start after 396 sec
>
> i can use ecasound to combine a0+a1+b0+b1 together?

With the latest Ecasound I believe that this will do what
you want:

$ ecasound -a:1 -i a0.wav \
-a:2 -i a1.wav \
-a:3 -i:playat,396,b0.wav \
-a:4 -i:playat,396,b1.wav \
-a:all -o output.wav

Hope this helps.

> thanks

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Fwd: audio dropouts whith ECI

2008-09-03T02:46:47Z

On Mon, Sep 1, 2008 at 10:21 PM, Kai Vehmanen <kvehmanen@...> wrote:

> Hi,
>
> On Fri, 29 Aug 2008, Oliver Oli wrote:
>
>> Last thing that bugs me: I'm using ecasound from Python that receives
>> OSC messages and translates them to c-select and cop-set commands for
>> ecasound. For testing I sent an OSC message every 10ms, which led to
>> dropouts every few seconds.
>> Jack (on Linux) displays no xruns at all
>> and CPU load is reasonably low.
>
> hmm, if Jack doesn't report xruns, how do you verify that there were
> dropouts .. is there a gap in the audio stream produced by ecasound for
> other JACK clients?

I haven't recorderd the audio stream with some other jack client. It's
producing just audible gaps, which doesn't sound like an xrun sounds
normally.

> Oh, and is JACK running with real-time priority? If it's not, then there's
> nothing protecting the real-time sensitive parts of JACK (and its clients)
> from other application thread/processes...

It's running with rt priority on multimedia kernel (64studio). jack
seems to run rock stable on this system.

>> Seems to me that the problem lies
>> somewhere in ecasound. Or can my Python script somehow block ecasound?
>> I can also reproduce this on OS X and with the Ruby eci lib.
>
> A lot of effort has been gone to isolate the control parts (whatever an ECI
> client or a (G)UI built on top of libecasound does) from the engine. So when
> the engine is run with real-time priority, nothing in other parts of the
> system should be able to interfere with it. The protection is enforced by
> the kernel, so it is fairly robust.
>
> But, but, if you have a glitch, then something is definitely not right.

maybe it hasn't anything to do with ECI or RT. I'll have to make
further tests later. Maybe some problems with the LADSPA plugins I've
used.

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Re: issues with loop device

2008-09-03T02:25:13Z

On Mon, Sep 1, 2008 at 9:48 PM, Kai Vehmanen <kvehmanen@...> wrote:

> On Tue, 26 Aug 2008, Oliver Oli wrote:
>>>
>>> Here is some simple chainsetup, jack shows a cpu load around 7%
> [...]
>>>
>>> it seems that the loop device consumes quite some cpu and I wonder if
>>> that is to be expected, a bug or me not understanding ecasound?
> [...]
>> I have to add that this was related to running ecasound on OS X. I
>> tested the chainsetup on Linux and there is no difference with or
>> without the loop device.
>
> now that's just crazy in fact. Does the same happen without JACK (you can
> simulate real-time operation somewhat by replacing "jack_auto" with "rtnull"
> and checking the CPU usage with 'top' or something similar)...?

it does happen with rtnull, too.

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ecasound-2.5.2 wrongly calculates "Max gain without clipping"

2008-09-02T14:07:48Z

Hello All,

I see an output like this:

"
(audiofx) Peak amplitude, period: pos=1.03681 neg=1.19776.
(audiofx) Peak amplitude, all : pos=1.03681 neg=1.19776.
(audiofx) Clipped samples, period: pos=2 neg=11.
(audiofx) Clipped samples, all : pos=2 neg=11.
(audiofx) Max gain without clipping, all: 1.00000.
".

Max gain without clipping of 1.00000 is obviously wrong, it should rather
be 1 / 1.19776 .

Regards,
Sergei.

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ecasound control interface problem

2008-09-02T13:15:40Z

Hi All,

Sorry for the cross/multiple posts. I have a C program that uses libecasoundc to control 4 oscillators in ecasound. I took a break from developing this for about a year. I have recently returned to it and I'm finding that ecasound stops running very early in the program. A year ago this code was working very well on a Fedora core 5 machine with Planet ccrma kernel and ecasound 3.4.6.1. Now I am running Fedora 8 with ccrma but the same code only runs for about 5 seconds before ecasound stops. I set the ECASOUND_LOGFILE environment variable and found this after about 5 seconds in operation:

[OBJECTS ] (eca-control) command: q <17850>

...after which there are a bunch of messages that indicate ecasound is stoppng. I definitely haven't programmed in that command. Why would that show up?
I've compiled the example c program from the ECI guide and found similar behaviour. I have included at the end of this email a small test c program that produces these results on my system.

Any help is greatly appreciated.

Thanks a lot,
Francis

Current system info:

Hardware: Pentium 4, 1.5 G RAM
OS: Fedora 8, ccrma
#rpm -qa | grep ecasound:
ecasound-2.4.6.1-1.fc8.ccrma
pyecasound-2.4.6.1-1.fc8.ccrma
libecasoundc-2.4.6.1-1.fc8.

ccrma

TEST C PROGRAM:

#include <stdio.h>
#include <unistd.h>
#include <ecasoundc.h>
#include <unistd.h>             /*sleep */

//COMPILE: gcc -g -o example example.c `libecasoundc-config --cflags --lib`

int
main (int argc, char *argv[])
{

//start jack
system ("jackd -R -dalsa -dhw:0 -r44100 -p1024 -n2 2>&1 &");
sleep (3);
//ecasound stuff
eci_init ();
eci_command ("cs-add waveup_cs");

//oscillator 1
eci_command ("c-add osc1");
eci_command ("ai-add null");
eci_command ("ao-add jack_generic,osc1");
eci_command ("cop-add -el:sine_fcac,0,0");
eci_command ("copp-select 1");
eci_command_float_arg ("copp-set", 440);
eci_command ("copp-select 2");
eci_command_float_arg ("copp-set", 5);
eci_command ("cop-add -ea:150");
eci_command ("ctrl-add -kos:1,25,50,1,0");
eci_command ("ctrlp-select 4");
eci_command_float_arg ("ctrlp-set", 1);

eci_command ("cs-connect");
eci_command ("start");
usleep (500000);

//connect jack outputs
system ("jack_connect ecasound:osc1_1 alsa_pcm:playback_1");
usleep (500000);

while (1)
    {
      int i;

      for (i = 60; i <= 400; i++)
    {
          usleep(1000);
    eci_command ("c-select osc1");
    eci_command ("cop-select 1");
    eci_command ("copp-select 1");
    eci_command_float_arg ("copp-set", i);
    }
      for (i = 400; i >= 60;i--)
    {
          usleep(1000);
    eci_command ("c-select osc1");
    eci_command ("cop-select 1");
    eci_command ("copp-select 1");
    eci_command_float_arg ("copp-set", i);
    }

      eci_command ("engine-status");
      if (strcmp (eci_last_string (), "running") != 0) {
        puts ("ECASOUND STOPPED!");
    //break;
      }
    }

eci_command ("stop");
eci_command ("cs-disconnect");
eci_command ("cop-status");
printf ("Chain operator status: %s", eci_last_string ());
eci_cleanup ();

return (0);
}