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path: root/sound/core/seq/seq_ports.h
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2024-08-09Merge branch 'topic/control-lookup-rwlock' into for-nextTakashi Iwai
Pull control lookup optimization changes. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2024-08-06ALSA: ump: Handle MIDI 1.0 Function Block in MIDI 2.0 protocolTakashi Iwai
The UMP v1.1 spec says in the section 6.2.1: "If a UMP Endpoint declares MIDI 2.0 Protocol but a Function Block represents a MIDI 1.0 connection, then may optionally be used for messages to/from that Function Block." It implies that the driver can (and should) keep MIDI 1.0 CVM exceptionally for those FBs even if UMP Endpoint is running in MIDI 2.0 protocol, and the current driver lacks of it. This patch extends the sequencer port info to indicate a MIDI 1.0 port, and tries to send/receive MIDI 1.0 CVM as is when this port is the source or sink. The sequencer port flag is set by the driver at parsing FBs and GTBs although application can set it to its own user-space clients, too. Link: https://patch.msgid.link/20240806070024.14301-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2024-07-31ALSA: seq: ump: Use the common RPN/bank conversion contextTakashi Iwai
The UMP core conversion helper API already defines the context needed to record the bank and RPN/NRPN values, and we can simply re-use the same struct instead of re-defining the same content as a different name. Link: https://patch.msgid.link/20240731130528.12600-4-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-05-23ALSA: seq: Automatic conversion of UMP eventsTakashi Iwai
This patch enables the automatic conversion of UMP events from/to the legacy ALSA sequencer MIDI events. Also, as UMP itself has two different modes (MIDI 1.0 and MIDI 2.0), yet another converters between them are needed, too. Namely, we have conversions between the legacy and UMP like: - seq legacy event -> seq UMP MIDI 1.0 event - seq legacy event -> seq UMP MIDI 2.0 event - seq UMP MIDI 1.0 event -> seq legacy event - seq UMP MIDI 2.0 event -> seq legacy event and the conversions between UMP MIDI 1.0 and 2.0 clients like: - seq UMP MIDI 1.0 event -> seq UMP MIDI 2.0 event - seq UMP MIDI 2.0 event -> seq UMP MIDI 1.0 event The translation is per best-effort; some MIDI 2.0 specific events are ignored when translated to MIDI 1.0. Reviewed-by: Jaroslav Kysela <perex@perex.cz> Link: https://lore.kernel.org/r/20230523075358.9672-31-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-05-23ALSA: seq: Add UMP group number to snd_seq_port_infoTakashi Iwai
Add yet more new filed "ump_group" to snd_seq_port_info for specifying the associated UMP Group number for each sequencer port. This will be referred in the upcoming automatic UMP conversion in sequencer core. Reviewed-by: Jaroslav Kysela <perex@perex.cz> Link: https://lore.kernel.org/r/20230523075358.9672-30-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-05-23ALSA: seq: Add port direction to snd_seq_port_infoTakashi Iwai
Add a new field "direction" to snd_seq_port_info for allowing a client to tell the expected direction of the port access. A port might still allow subscriptions for read/write (e.g. for MIDI-CI) even if the primary usage of the port is a single direction (either input or output only). This new "direction" field can help to indicate such cases. When the direction is unspecified at creating a port and the port has either read or write capability, the corresponding direction bits are set automatically as default. Reviewed-by: Jaroslav Kysela <perex@perex.cz> Link: https://lore.kernel.org/r/20230523075358.9672-29-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-05-23ALSA: seq: Check the conflicting port at port creationTakashi Iwai
We didn't check if a port with the given port number has been already present at creating a new port. Check it and return -EBUSY properly if the port number conflicts. Reviewed-by: Jaroslav Kysela <perex@perex.cz> Link: https://lore.kernel.org/r/20230523075358.9672-22-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156Thomas Gleixner
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-09ALSA: seq: Fix race of get-subscription call vs port-delete ioctlsTakashi Iwai
The snd_seq_ioctl_get_subscription() retrieves the port subscriber information as a pointer, while the object isn't protected, hence it may be deleted before the actual reference. This race was spotted by syzkaller and may lead to a UAF. The fix is simply copying the data in the lookup function that performs in the rwsem to protect against the deletion. Reported-by: syzbot+9437020c82413d00222d@syzkaller.appspotmail.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-26ALSA: seq: remove unused callback_all fieldClemens Ladisch
Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-01-03[ALSA] Remove xxx_t typedefs: SequencerTakashi Iwai
Modules: ALSA sequencer Remove xxx_t typedefs from the core sequencer codes. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2005-04-16Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!