mirrors/pulseaudio
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git synced 2025-11-08 13:29:59 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

alsa: fix infinite loop with Intel HDMI LPE

Browse source 
The Intel HDMI LPE driver works in a peculiar way when the HDMI cable is
not plugged in: any written audio is immediately discarded and underrun
is reported. That resulted in an infinite loop, because PulseAudio tried
to keep the buffer filled, which was futile since the written audio was
immediately consumed/discarded.

This patch adds special handling for the LPE driver: if the active port
of the sink is unavailable, the sink suspends itself. A new suspend
cause is added: PA_SUSPEND_UNAVAILABLE.

BugLink: https://bugs.freedesktop.org/show_bug.cgi?id=100488
This commit is contained in:
Tanu Kaskinen 2017-12-28 12:09:17 +02:00
parent d9624e0382
commit 94fc586c01
4 changed files with 58 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

1
src/pulsecore/core.h
View file

@ -34,6 +34,7 @@ typedef enum pa_suspend_cause {
PA_SUSPEND_SESSION = 8, /* Used by module-hal for mark inactive sessions */
PA_SUSPEND_PASSTHROUGH = 16, /* Used to suspend monitor sources when the sink is in passthrough mode */
PA_SUSPEND_INTERNAL = 32, /* This is used for short period server-internal suspends, such as for sample rate updates */
PA_SUSPEND_UNAVAILABLE = 64, /* Used by device implementations that have to suspend when the device is unavailable */
PA_SUSPEND_ALL = 0xFFFF /* Magic cause that can be used to resume forcibly */
} pa_suspend_cause_t;