Jaroslav Kysela [Tue, 9 Sep 2008 11:07:39 +0000 (13:07 +0200)]
pcm_softvol plugin: remove access type change for refine
The softvol plugin does in-place sample recalculation. The access type
cannot be changed like in linear plugins. Remove access type change
in refine functions.
This bug was detected with PulseAudio on Sony PS3 platform.
Jaroslav Kysela [Mon, 1 Sep 2008 09:38:53 +0000 (11:38 +0200)]
Add snd_pcm_avail() and snd_pcm_avail_delay() functions. Make snd_pcm_hwsync() deprecated.
As proposed in http://mailman.alsa-project.org/pipermail/alsa-devel/2008-June/008558.html
the snd_pcm_avail() and snd_pcm_avail_delay() functions are now available
to get accurate stream position in a straight way. The snd_pcm_avail_delay()
function was added to ensure full sync between avail and delay values. It's
actually implemented using delay() + avail_update() calls but it might be
changed in future.
snd_pcm_delay() is for synchronization purposes, it returns the overall latency
of the stream, not just the latency induced by the hardware playback buffer.
The documentation is a bit misleading about this fact, and some people already
misunderstood it. So let's reword this to make the explanation clearer and
explicit.
This is a result of the discussions of the thread this mail belongs to:
alsa-lib: Make sure SND_PCM_NO_xxx flags don't get lost when nonblocking mode is enabled
The plug PCM copies the 'mode' field from the slave PCM. If blocking mode is
enabled for the plug PCM the mode is subsequently overwritten with the original
requested 'mode'. If non-blocking mode is requested this does not happen.
Because the hw PCM synthesizes the 'mode' from the actual file descriptor flags
no SND_PCM_NO_xxx will ever be set for it. This has the effect that the 'mode'
of the plug PCM will also not include those flags anymore -- unless they are
overwritten as mentioned above. This basically means SND_PCM_NO_xxx is ignored
for plug:hw:4711 style device strings opened in non-blocking mode.
You can easily test this with "aplay --channels 7 --disable-channels -f S16_LE
-r 44100 -D plug:hw:0" on a device that cannot do 7 channels. Normally this
call should fail, however if you add "-N" to the command line this call will
succeed.
This patch simply copies the SND_PCM_NO_xxx flags back into the 'mode' field in
case we don't overwrite it with the original anyway.
Probably closes bug 3571 for good.
From: Lennart Poettering <mznyfn@0pointer.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
fix return value of snd_pcm_rewind()/snd_pcm_forward() to return how much actually has been rewound, instead of what actually could have rewound
Make snd_pcm_plugin_rewind()/_forward() actually return how much has
been rewound/forwarded instead of how much could have been
rewounded/forwarded. This makes the code actually do what the
documentation of snd_pcm_rewind() suggests.
Signed-off-by: Lennart Poettering <lennart@poettering.net> Signed-off-by: Takashi Iwai <tiwai@suse.de>
fix type of internally used sframes variable, to avoid unnecessary casts
This minor patch fixes the type of the sframes variable in
snd_pcm_plugin_forward(). With this fix we need to cast less and the
code is less confusing.
Signed-off-by: Lennart Poettering <lennart@poettering.net> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Add boolean (mute) functionality to softvol plugin
When the resolution is set to 2, a boolean control is created as a
mute switch instead of a volume control.
Also, fixed the possible zero-division error.
Josh Green [Sat, 7 Jun 2008 08:10:49 +0000 (10:10 +0200)]
Fix segfault with dmix of 3-bytes formats
The i386 and x86-64 dmix may cause segfaults when 3-bytes formats are used
due to btsl asm code, which may overcome the buffer end-boundary.
The patch changes btsl to btsw so that it doesn't happen.
Takashi Iwai [Fri, 6 Jun 2008 15:10:41 +0000 (17:10 +0200)]
PCM: allow mmap-access conversion in plug
The plug plugin has a long-standing problem that it can handle only
slaves that support mmap because of format/rate/access conversions
(these corresponding plugins work only with mmap).
This patch adds the support of automatic mmap->rw conversion via
mmap_emul plugin.
Takashi Iwai [Fri, 14 Mar 2008 13:03:54 +0000 (14:03 +0100)]
Use slave PCM as a timing-source for file ifile
When ifile option is used for the file plugin, it ignores the slave PCM
and just feeds the input data.
This patch changes the behavior a bit - it uses the slave PCM as the
timing source (just read and throw data away) so that the input data
can be read in the right sample rate.
Takashi Iwai [Wed, 12 Mar 2008 15:30:26 +0000 (16:30 +0100)]
Add truncate option to PCM file plugin
Addeed a new option "truncate" to indicate the behavior of creating
the output file. When it's true (the default), the file is overwritten
and truncated at creation. When false, the plugin tries to open a
unique file with a number suffix.
The global behavior of "file" and "tee" PCMs is defined via
defaults.pcm.file_truncate option. You can overwrite it in ~/.asoundrc.
Takashi Iwai [Mon, 10 Mar 2008 11:02:26 +0000 (12:02 +0100)]
dmix skipping first set of samples
There was a change in alsa-lib 1.0.16 which looks like it was designed to
make dmix skip samples in the case of underruns, but it causes the first
sample to be skipped since dmix->slave_hw_ptr == dmix->slave_appl_ptr.
The following patch fixes this and fixes a small typo in the comment.
Pawel MOLL [Fri, 7 Mar 2008 16:18:16 +0000 (17:18 +0100)]
Fix for alsa-lib cross-compilation problems with ALSA_CONFIG_DIR and ALSA_PLUGIN_DIR
"./configure" options for selecting ALSA configuration (default
/usr/share/alsa) and plugin (/usr/lib/alsa-lib) directories introduced
by alsa-hg/alsa-lib changeset 2284 cause problems with cross-compilation
and packaging - there is no way to redefine them in runtime, during
installation phase.
This patch adds a level of indirection between constants and their
usage - alsaconfigdir for ALSA_CONFIG_DIR and alsaplugindir for
ALSA_PLUGIN_DIR - which can be redefined during "make install" stage.
Takashi Iwai [Mon, 25 Feb 2008 14:11:46 +0000 (15:11 +0100)]
Fix the state in snd_pcm_ioplug_pause()
The states[] in snd_pcm_ioplug_pause() has wrong values. They should be
swapped. ALSA bug#3796:
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3796
Takashi Iwai [Mon, 25 Feb 2008 13:56:51 +0000 (14:56 +0100)]
Create doxgen.cfg dynamically
The patch from bug#3799
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3799
The "doc" target in doc/Makefile.am assumes the build directory and
the source directory are the same and fails if they differ ... this is
because the doxygen.cfg contains relative paths (such as ../) that
only work when building in the source tree
The attached patch against hg replaces all relative paths with
@top_srcdir@ and changes doxygen.cfg to a generated file so that
configure replaces @top_srcdir@ with the appropriate configure-time
path.
Assuming people like being able to do `make -f Makefile.am doc` on
an unconfigured and having it work, i added a small `test&&sed`
that'll generate an appropriate default doxygen.cfg for them.
Takashi Iwai [Mon, 11 Feb 2008 13:19:32 +0000 (14:19 +0100)]
Fix conflict of obsoleted snd_pcm_hw_* definitions
When only SND_PCM_OLD_HW_PARAMS_API is defined but no
SND_PCM_OLD_SW_PARAMS_API, the declerations of some obsoleted functions
conflict. Although the apps should define both at the same time, it's
not good to break. Fixed the ifdef now.
Takashi Iwai [Fri, 18 Jan 2008 12:42:51 +0000 (13:42 +0100)]
dmix - Enable auto format detection as default
The direct plugins have the automatic format-detection feature but it
wasn't enabled properly in the interface. Now you can pass the format
"unchanged" to make the plugin detect a proper format.
This will change the default format of some drivers, such as, HD-audio.
Clemens Ladisch [Mon, 14 Jan 2008 07:52:16 +0000 (08:52 +0100)]
pcm dmix plugin: fix generic direct remixing
In the case of the sum buffer being uninitialized, the source sample
must be negated not only when writing to the sum but also when writing
to the destination.
Takashi Iwai [Wed, 9 Jan 2008 16:17:14 +0000 (17:17 +0100)]
Fix exported symbols for hooks and functions
The functions dynamically loaded via plugin aren't fully listed
in the exported functions in Versions file. This caused errors at
opening devices with such plugins.
git://git.alsa-project.org / alsa-lib.git / log