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Writing to the audio pipe for the remote submix is blocking, unless
the audio output pipe is in shutdown mode. The playback thread
could stay blocked on the write if the input stream has already
been closed.
The change consists in shutting down the pipe also when the input
stream gets closed. When the pipe is in this state, simulate
timing in the write operation so we don't drain the output faster
than realtime.
Bug 7424646
Change-Id: I5feb3be642b0ee7eef10dee0141308684ee9c811
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Support receiving a parameter that sets the remote audio submix
module in a state where the audio pipe will unblock any current
write operation and not block anymore.
Change-Id: Ia3119cd79972afff0de24187dae627855a468ebf
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The reference count on the strong pointers to the audio sink and
source should be done on the object retrieved from the device
structure, not by accessing the corresponding fields, as they
can be cleared while reading or writing audio data.
Change-Id: I446a2c7bdcb0758b4013b0ad75450a15203fb9da
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Change-Id: I61cd15534b1cd764b06f615569cdf02edbba909c
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Change how the remote audio submix is handling piping audio
through the pipe:
- use a MonoPipe as audio sink for blocking writes,
- use a MonoPipeReader as audio source for non blocking reads,
and keep track of when recording started to align the
time at which the in_read() call should return with the
projected time of the recording duration.
Change-Id: I8b0f8c56a0486806101e272dfbf9c6d2d1c11112
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Neither write nor read are blocking, but write simulates
timing by checking the clock between two writes and
computing how long the next sleep should last.
Change-Id: I495ae6d44b0cf75a24fe4b70662cfac679049c67
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Update remote submix audio HAL API revision to 2.0
(new audio device enums).
Change-Id: I61d5faf498144002929e570ee50375b059fb17c5
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New definitions of audio devices for remote submix: one representing
a sink for writing the audio buffers that won't be played directly
locally, another representing the audio source that can be read from
to obtain the audio mix.
New audio hardware module encapsulating the submix loop functionality.
Create a Pipe to serve as non-blocking audio ring buffer between
the output device (the sink) and the input device (the source).
Change-Id: I527f4721a69ced0430a99ebba3b4db7d419f2bb2
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