December 2013 - Alsa-devel - mailman.alsa-project.org

[alsa-devel] compressed audio support
by maruthi srinivas 02 Dec '13

02 Dec '13

Hi, I saw that compressed audio framework being used with Asoc (alsa soc). Can the framework be used with other than Asoc ? I mean with ALSA pci based cards. I see the implementation in the following files. which one is to be used ? Does tinycompress in userspace can be used with either approaches ? http://lxr.free-electrons.com/source/sound/core/compress_offload.c http://lxr.free-electrons.com/source/sound/soc/soc-compress.c Regards, Maruthi

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[alsa-devel] [PATCH] alsa-lib: dlmisc: Add a fake dl lib head file when dl lib is not supported by the toolchain.
by Sonic Zhang 02 Dec '13

02 Dec '13

From: sonic <sonic(a)htpc.(none)> The FLAT GNU toolchain doesn't include the dlfcn.h header file. Signed-off-by: Sonic Zhang <sonic.adi(a)gmail.com> --- include/dlmisc.h | 24 ++++++++++++++++++++++++ modules/mixer/simple/sbasedl.c | 4 ++++ src/mixer/simple_abst.c | 4 ++++ 3 files changed, 32 insertions(+) create mode 100644 include/dlmisc.h diff --git a/include/dlmisc.h b/include/dlmisc.h new file mode 100644 index 0000000..3be8d43 --- /dev/null +++ b/include/dlmisc.h @@ -0,0 +1,24 @@ +/* + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as + * published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef __ALSA_DLMISC_H +#define __ALSA_DLMISC_H + +#define RTLD_NOW 0x00002 +#define RTLD_GLOBAL 0x00100 + +#endif diff --git a/modules/mixer/simple/sbasedl.c b/modules/mixer/simple/sbasedl.c index 494802f..511bebf 100644 --- a/modules/mixer/simple/sbasedl.c +++ b/modules/mixer/simple/sbasedl.c @@ -27,7 +27,11 @@ #include <fcntl.h> #include <sys/ioctl.h> #include <math.h> +#ifdef HAVE_LIBDL #include <dlfcn.h> +#else +#include <dlmisc.h> +#endif #include "config.h" #include "asoundlib.h" #include "mixer_abst.h" diff --git a/src/mixer/simple_abst.c b/src/mixer/simple_abst.c index 9e9aaf5..dd951fe 100644 --- a/src/mixer/simple_abst.c +++ b/src/mixer/simple_abst.c @@ -34,7 +34,11 @@ #include <fcntl.h> #include <sys/ioctl.h> #include <math.h> +#ifdef HAVE_LIBDL #include <dlfcn.h> +#else +#include <dlmisc.h> +#endif #include "config.h" #include "asoundlib.h" #include "mixer_simple.h" -- 1.7.9.5

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[alsa-devel] Bug: plugging in a new sound card causes mixer state of other sound cards to be changed
by Angus McInnes 01 Dec '13

01 Dec '13

Hi, When I plug in my USB sound card, the mixer settings of the internal sound card are changed. I don't want this to happen. I believe the problem is with this commit: http://git.alsa-project.org/?p=alsa-utils.git;a=blobdiff;f=alsactl/90-alsa-… The card number $attr{number} comes from the card* device. Since KERNELS=="card*" was changed to KERNELS!="card*", alsactl restore is run with no card number attribute, so it restores the state of all cards. If I change the != back to ==, alsactl restore is run with a card number and the problem seems to be resolved. (By the way, your bug tracker at https://bugtrack.alsa-project.org/alsa-bug seems to be down.) Regards, Angus McInnes

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