Ubuntu
gst-plugins-good0.10 package

QAudioRecorder recording hangs

Bug #1433563 reported by Michał Karnicki
14
This bug affects 2 people
Affects Status Importance Assigned to Milestone
Canonical System Image
Fix Released
High
Canonical Phone Foundations
gst-plugins-good0.10 (Ubuntu)
Fix Released
Undecided
Ricardo Salveti
qtmultimedia-opensource-src (Ubuntu)
Fix Released
Undecided
Unassigned

Bug Description

Recording audio with QAudioRecorder intermittently fails for me. Another user even reported that it only works 1 out of 5-10 times.

QAudioRecorder seems to hang on requesting the audio to be recorded (status QMediaRecortder::StartingStatus). When it actually works, it properly goes from starting to recording and then it's possible to record audio and playback.

QAudioRecorder has an error() method, but it returns QMediaRecorder::NoError

Since it was confirmed by two people (victorp, karni) we suspect it's a bug in the middleware rather than the apps.

A test click has been sent to Ricardo's e-mail by Victor.

phablet@ubuntu-phablet:~$ system-image-cli -i
current build number: 20
device name: krillin
channel: (the BQ channel)
last update: 2015-02-26 17:06:15
version version: 20
version ubuntu: 20150219
version device: 20150225-b67e0b6
version custom: 20150216-561-29-186

Related branches

lp:~rsalveti/kubuntu-packaging/qgstreamercapturesession_avoid_race_eos
PS Jenkins bot: Needs Fixing (continuous-integration)
Kubuntu Packagers: Pending requested
Diff: 53 lines (+33/-0)
3 files modified
debian/changelog (+8/-0)
debian/patches/qgstreamercapturesession_avoid_race_eos.patch (+24/-0)
debian/patches/series (+1/-0)
lp:ubuntu/wily/gst-plugins-good0.10
lp:ubuntu/wily/qtmultimedia-opensource-src
Michał Karnicki (karni)
Changed in pulseaudio (Ubuntu):
assignee: nobody → Ricardo Salveti (rsalveti)
Revision history for this message
Raymond (superquad-vortex2) wrote :

it look like qaudiorecorder bug

in qaudioinput_alsa_p.cpp

buffer_time = 100000;
    period_time = 20000;

but chunks = 8

if ( !fatal ) {

        err = snd_pcm_hw_params_set_buffer_time_near(handle, hwparams, &buffer_time, &dir);

        if ( err < 0 ) {

            fatal = true;

            errMessage = QString::fromLatin1("QAudioInput: snd_pcm_hw_params_set_buffer_time_near: err = %1").arg(err);

        }

    }

    if ( !fatal ) {

        err = snd_pcm_hw_params_set_period_time_near(handle, hwparams, &period_time, &dir);

        if ( err < 0 ) {

            fatal = true;

            errMessage = QString::fromLatin1("QAudioInput: snd_pcm_hw_params_set_period_time_near: err = %1").arg(err);

        }

    }

    if ( !fatal ) {

        err = snd_pcm_hw_params_set_periods_near(handle, hwparams, &chunks, &dir);

        if ( err < 0 ) {

            fatal = true;

            errMessage = QString::fromLatin1("QAudioInput: snd_pcm_hw_params_set_periods_near: err = %1").arg(err);

        }

    }

    if ( !fatal ) {

        err = snd_pcm_hw_params(handle, hwparams);

        if ( err < 0 ) {

            fatal = true;

            errMessage = QString::fromLatin1("QAudioInput: snd_pcm_hw_params: err = %1").arg(err);

        }

    }

Ricardo Salveti (rsalveti)
affects: pulseaudio (Ubuntu) → gst-plugins-good0.10 (Ubuntu)
Revision history for this message
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in gst-plugins-good0.10 (Ubuntu):
status: New → Confirmed
Changed in qtmultimedia-opensource-src (Ubuntu):
status: New → Confirmed
Pat McGowan (pat-mcgowan)
tags: added: hotfix
Changed in canonical-devices-system-image:
status: New → Confirmed
importance: Undecided → High
assignee: nobody → Canonical Phone Foundations (canonical-phonedations-team)
Pat McGowan (pat-mcgowan)
tags: removed: hotfix
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package gst-plugins-good0.10 - 0.10.31-3+nmu1ubuntu7

---------------
gst-plugins-good0.10 (0.10.31-3+nmu1ubuntu7) vivid; urgency=medium

  * debian/patches/0001-pulsesrc-improve-clock-handling.patch:
    - Cherry-pick from upstream to fix deadlock when recording
      (LP: #1433563)
 -- Ricardo Salveti de Araujo <email address hidden> Sun, 19 Apr 2015 20:02:41 -0300

Changed in gst-plugins-good0.10 (Ubuntu):
status: Confirmed → Fix Released
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package qtmultimedia-opensource-src - 5.4.1-1ubuntu2

---------------
qtmultimedia-opensource-src (5.4.1-1ubuntu2) vivid; urgency=medium

  * debian/patches/debian/patches/qgstreamercapturesession_avoid_race_eos.patch:
    - Avoid races when sending EOS, making sure pipeline is in playing state
      first (LP: #1433563)
 -- Ricardo Salveti de Araujo <email address hidden> Sun, 19 Apr 2015 20:13:29 -0300

Changed in qtmultimedia-opensource-src (Ubuntu):
status: Confirmed → Fix Released
Jean-Baptiste Lallement (jibel)
Changed in canonical-devices-system-image:
status: Confirmed → Fix Released
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