From 1e8c36f682905a66fee81482c2376b663781d658 Mon Sep 17 00:00:00 2001 From: Norman Feske Date: Tue, 27 Feb 2024 16:05:26 +0100 Subject: [PATCH] doc/components.txt: record/play infrastructure --- doc/components.txt | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-) diff --git a/doc/components.txt b/doc/components.txt index e0808faea4..dd930568bc 100644 --- a/doc/components.txt +++ b/doc/components.txt @@ -34,10 +34,11 @@ of them is briefly characterized as follows: the driver is made available to other system components via one of Genode's device-independent session interfaces, which are 'platform_session', 'capture_session', 'event_session', 'block_session', - 'audio_out_session', 'log_session', 'nic_session', and 'timer_session' - (see _os/include/_ for the interface definitions). Those interfaces are - uniform across hardware platforms and kernel base platforms. Usually, - each device driver can accommodate only one client at a time. + 'record_session', 'play_session', 'log_session', 'uplink_session', and + 'timer_session' (see _os/include/_ for the interface definitions). + Those interfaces are uniform across hardware platforms and kernel base + platforms. Usually, each device driver accommodates one client at a + time. :Resource multiplexers: provide mechanisms to multiplex device resources to multiple clients. A typical resource multiplexer requests one @@ -194,9 +195,9 @@ provided by the kernel, or a pseudo time source (busy): Audio drivers ============= -Audio drivers implement the Audio_out session interface defined at -_os/include/audio_out_session/_ for playback and optionally the audio_in -interface for recording. +Audio drivers use the audio mixer's record session interface defined at +_os/include/record_session/_ for audio output and optionally the play +session interface _os/include/play_session/_ for audio input. :_os/src/drivers/audio/spec/linux/_: Uses ALSA as back-end on the Linux base platform and supports only playback. @@ -277,9 +278,9 @@ subdirectory of a source repository. framebuffer and a virtual input interface. Nitpicker (including a README file) is located at _os/src/server/nitpicker/_. -:Audio output: The audio mixer located at _os/src/server/mixer/_ enables - multiple clients to use the audio-out interface. The mixing is done by simply - adding and clamping the signals of all present clients. +:Audio output: The audio mixer located at _os/src/server/record_play_mixer/_ + allows for the routing and mixing of audio signals from play-session clients + to record-session clients. :Networking: The NIC bridge located at _os/src/server/nic_bridge/_ multiplexes one NIC session to multiple virtual NIC sessions using a proxy-ARP