When running for IRQ-based scheduling model, transmission backend is
expected to queue PCM event in different context from the main thread.
When queueing no events during time equivalent to one period of PCM
buffer, the backend has problems.
This commit outputs report it for non-blocking operation for IRQ-based
scheduling model. The timeout is equivalent to all frames in buffer,
instead of period for safe.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit applies code refactoring for waiting PCM event queued
per period of PCM buffer in copying operation for IRQ-based scheduling
model.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
When running for IRQ-based scheduling model, transmission backend is
expected to queue PCM event in different context from the main thread.
When queueing no events during time equivalent to one period of PCM
buffer, the backend has problems.
This commit outputs report it for mmap operation for IRQ-based
scheduling model. The timeout is equivalent to all frames in buffer,
instead of period for safe.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Although the waiter abstraction handles timeout as success, it should
report for callers to know timeout.
This commit takes the waiter to return -ETIMEDOUT when timeout expires.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
A call of select(2) returns negative code and report errors via errno
local variable, howver current waiter implementation for select(2)
returns the negative code instead of errno.
This commit fixes it.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
A call of select(2) returns error code at failure, the number of file
descriptors available I/O at success. Current implementation of
waiter abstraction for select(2) returns 0 at success and callers
can't get the number.
This commit fixes it.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
setup_chmap() will return with error number if hw_map calloc fail or
channels doesn't match with hw_params, but memory free was ignored when
error occurs.
Signed-off-by: chunxu.li <chunxuxiao@gmail.com>
Reviewed-by: Takashi Sakamoto o-takashi@sakamocchi.jp
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
exp10 is a GNU extension and not available everywhere (eg. uClibc-ng).
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
In system V ABIs with ILP32 data model, bit shift for '1ul' can brings
undefined behaviour when the calculation result is over 32 bit width.
This commit fixes the bug.
Reported-by: Rolf Eike Beer <eike@sf-mail.de>
Reference: https://bugs.gentoo.org/681652
Reference: https://github.com/alsa-project/alsa-utils/issues/23
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Each container should be configured to store one saple per frame in
demuxer case. This commit fixes the bug.
Fixes: 25c8e3bebb ('axfer: add support for a mapper for multiple target')
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit fixes uninitialized return value from a call of test_mux() and
text_demux() to suppress warnings below:
$ make check
...
gcc -DHAVE_CONFIG_H -I. -I../../include -O2 -Wall -pipe -g -MT mapper-test.o -MD -MP -MF .deps/mapper-test.Tpo -c -o mapper-test.o mapper-test.c
mapper-test.c: In function ‘test_mapper’:
mapper-test.c:241:9: warning: ‘err’ may be used uninitialized in this function [-Wmaybe-uninitialized]
return err;
^~~
mapper-test.c:231:5: warning: ‘err’ may be used uninitialized in this function [-Wmaybe-uninitialized]
if (err < 0)
^
Fixes: 39d1ab8a0c: ('axfer: add a unit test for mapper interface')
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit fixes uninitialized return value from a call of test_vector()
to suppress a warning below.
gcc -DHAVE_CONFIG_H -I. -I../../include -O2 -Wall -pipe -g -MT mapper-test.o -MD -MP -MF .deps/mapper-test.Tpo -c -o mapper-test.o mapper-test.c
mapper-test.c: In function ‘test_vector’:
mapper-test.c:293:6: warning: ‘err’ may be used uninitialized in this function [-Wmaybe-uninitialized]
int err;
^~~
Fixes: 39d1ab8a0c: ('axfer: add a unit test for mapper interface')
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This avoids multiple definitions of the same global variable (one in
each file that includes this header), and fixes a linking error when
compiled with -fno-common.
Fixes: 96110793b3 ("axfer: add support for a container of raw data")
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
struct block_v120_format defines these members as uint8_t. On
little-endian systems, no swapping is done, and the generated block
header is fine. However, on big-endian machines, the value is swapped to
the high byte and then truncated by the assignment, causing both
bits_per_sample and samples_per_frame to be zero.
This fixes an assertion failure in container-test when later
parsing the header ["assert(*samples_per_frame > 0);" in
container_context_pre_process()].
Fixes: 4ab7510f3a: ("axfer: add support for a container of Creative Tech. voice format")
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Get rid of a warning about implicit declaration of exp10, which is
behind _GNU_SOURCE as a non-standard feature. The same problem was fixed
for alsamixer in commit 116488e5f2.
Signed-off-by: Milton Vandersloot <miltonvandersloot@fake-box.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
- fix awk arguments
- backticks/gravemarks removal
- some cosmetic and indentation changes
- add REQUIRES to check the basic tools
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Add a command line option to automatically exit after recording a fixed
number of MIDI events. This allows a program using arecordmidi to expect
a MIDI file to be written automatically when the specified number of
events have been received, instead of having to send a SIGINT or SIGTERM
programmatically.
It also avoids the need to have the arecordmidi process running in the
background, and then constantly stat the output file to check if any
bytes have been written to it (this makes for less predictable and
longer-running tests).
This functionality finds use in Chrome OS functional testing, since
having to send SIGTERM/SIGINT programmatically and then wait for the
output file adds unpredictability and delay to the tests.
The addition of this command-line option should (hopefully) not break
any existing usage.
Signed-off-by: Prashant Malani <pmalani@chromium.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The file 'axfer/test/generator.h' is missing in distribution and brings
FTBFS for unit tests of axfer.
This commit fixes to add it.
Reported-by: Elimar Riesebieter <riesebie@lxtec.de>
Fixes: b878df1ff0: ('axfer: add unit test for container interface')
Fixes: 39d1ab8a0c: ('axfer: add a unit test for mapper interface')
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The program, axfer, was developed in userspace with glibc-2.28. This
userspace is mostly compliant to POSIX:2008 and some additional macros
for poll event are officially available. The glibc supports them as a
default since its v2.12 release. It will be failed to be compiled with
old glibc or the other libraries for C standard APIs.
One of the purpose of axfer is an better alternative of aplay. In a
point of the purpose, it's preferable to be compiled with the old
libraries.
This commit adds conditional macros to be compiled with libraries for
old compliance level of POSIX.
Reported-by: Jay Foster <jay@systech.com>
Fixes: fce16d9279 ('axfer: add an implementation of waiter for select(2)')
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Axfer has beed added as a rework of aplay with robust design to
support recent features of Linux sound subsystem.
This commit adds an entry to README.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit supplements value of options for the manual of transfer
subcommand.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Now help message is available to give help option to command line.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The libffado library can listen to isochronous channels to which unit on
IEEE 1394 bus transfers packets as long as the unit allows software to
read the channel from its register.
This commit corrects description about snoop mode.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
At present, axfer losts backward compatibility to aplay in a point of
'chmap' option.
This commit filfills a section to describe lose of backward compatibility
of chmap option.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Two unit tests are available to check internal implementation of axfer.
They perform file I/O for many times and take much time to finish.
This commit adds a section about it.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Fixes Master, Headphones and Speaker stuck at -8 percentage after
building with Clang 7.0.1 and getting warned about implicit declaration
of exp10, which is behind _GNU_SOURCE as a non-standard feature. Thanks
Takashi Iwai for the CFLAGS suggestion on the mailing list. GCC build is
not affected, so not adding a compiler check to the configure script.
uClibc-ng has got exp10 since 1.0.12, so the fallback macro is no longer
needed. However, alsa-utils relies on gettext so might need further
patches to actually work on uClibc systems.
Signed-off-by: makepost <makepost@firemail.cc>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Timer-based scheduling model has some merits against IRQ-based
scheduling model. However, as of Linux kernel v4.21, ALSA PCM interface
between kernel/userspace has a lack of some features.
This commit adds a subsection to describe it.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit fulfills a subsection titled as 'Timer-based scheduling model'.
This scheduling model is introduced in a recent decade. In this model,
applications should take care of its timing to operate sampled data
according to any timer. This is an optional behaviour of runtime of
PCM substream.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit adds a section titled as 'SCHEDULING MODEL' and fulfill a
subsection titled as 'IRQ-based scheduling model'.
This scheduling model is for a typical applications to operate a kind of
data sampled against actual time. In this model, ALSA PCM core maintains
timing of the applications with notification of hardware by
blocking/waking up their processes. This is a default behaviour of
runtime of PCM substream.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
At present, some options for software parameters have actual effects in
cases neither mmap operation nor timer-based scheduling model is used.
For mmap operation, backward compatibility to aplay(1) is lost.
This commit adds descriptions about it.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit attempts to describe purpose of each option with more texts
than aplay(1).
I note that a section for scheduling model will be prepared near future.
This commit just adds a placeholder for the section.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit attempts to categorise existing options to four parts;
basics, software features, libasound plugin options and debug assistant.
These categories will assist users to get purpose of each option.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
I note that libffado backend has no support for suspend/resume because
libffado has enough implementation for these features even if it exports
some symbols for them. For this backend, reception of signals for the
features brings abortion of runtime.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
