Opened 9 years ago

Closed 9 years ago

#1871 closed defect (fixed)

Missing audio index normalization in audio device open functions

Reported by: nanang Owned by: nanang
Priority: normal Milestone: release-2.4.5
Component: pjmedia Version: trunk
Keywords: Cc:
Backport to 1.x milestone: Backported: no


Audio device open APIs, as described in the specifications, treat any negative device ID value indifferently, i.e: as default or first available device. However, some new audio device APIs differentiate -1 and -2 as PJMEDIA_AUD_DEFAULT_CAPTURE_DEV and PJMEDIA_AUD_DEFAULT_PLAYBACK_DEV, such as pjmedia_aud_dev_default_param().

Unfortunately some device open API implementations are currently not normalizing the negative audio index before calling pjmedia_aud_dev_default_param(). So for example, on a system without input device, calling pjmedia_snd_port_create_player() with device index param set to -1 (=PJMEDIA_AUD_DEFAULT_CAPTURE_DEV) will return error PJMEDIA_EAUD_NODEFDEV.

Thanks Daljeet Singh for the report.

Change History (1)

comment:1 Changed 9 years ago by nanang

  • Resolution set to fixed
  • Status changed from new to closed

In 5140:

Fix #1871: fixed missing audio index normalization in audio device open functions.

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