Detailed changes v1.0.27.1 v1.0.27.2

Changelog between 1.0.27.1 and 1.0.27.2 releases

alsa-lib

Core

- Release v1.0.27.2

- Allow specifying the max number of cards

Add --with-max-cards option to specify the max number of cards in

configure script, when the support for more than 32 cards is

required.

Control API

- Allow specifying the max number of cards

Add --with-max-cards option to specify the max number of cards in

configure script, when the support for more than 32 cards is

required.

HWDEP API

- Allow specifying the max number of cards

Add --with-max-cards option to specify the max number of cards in

configure script, when the support for more than 32 cards is

required.

PCM API

- pcm_direct: fix SEGFAULT when getgrnam_r() returns 0 and pgrp is NULL

- pcm_hw: Fix buffer overflow in chmap

We can't calculate memory storage in bytes, when we're supposed

to store ints in it!

- chmap: Always succeed setting the map to what it already is

If we try to set the channel map to what it already is, this should

always succeed. E g, speaker-test can do this sometimes.

- pcm_direct: fix the memory leak when parsing the slave definitions

Reported-by: <bolsunov@telum.ru>

- pcm_plugin: Fix return value of snd_pcm_rewind

In case the rewind did not rewind as much as expected, e g due to

time delay between the latest avail update and the rewind, we must

properly account for that in the plugin layer.

Otherwise, the plugin's appl ptr and the hw's appl ptr become

unsynchronised, which is very bad, especially in mmap_shadow plugins,

e g, this could cause the overlapping memcpy in the softvol plugin

as seen here:

https://bugs.freedesktop.org/show_bug.cgi?id=64299

- pcm_hw: Remove unused fields in struct

These fields are not used, and their name similarity to other

fields are quite confusing when trying to debug alsa-lib.

- pcm: Fix typo in documentation: PREPARE → PREPARED.

Use Case Manager API

- ucm: Fix segfault when device argument is missing from _sw{dev, mod}

Configuration

- Allow specifying the max number of cards

Add --with-max-cards option to specify the max number of cards in

configure script, when the support for more than 32 cards is

required.