Commit Graph

56 Commits

Author SHA1 Message Date
Kővágó, Zoltán ed2a4a7941 audio: proper support for float samples in mixeng
This adds proper support for float samples in mixeng by adding a new
audio format for it.

Limitations: only native endianness is supported.  None of the virtual
sound cards support float samples (it looks like most of them only
support 8 and 16 bit, only hda supports 32 bit), it is only used for the
audio backends (i.e. host side).

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-id: 8a8b0b5698401b78d3c4c8ec90aef83b95babb06.1580672076.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-02-06 14:35:57 +01:00
Volker Rümelin fdc8c5f471 audio: fix bug 1858488
The combined generic buffer management code and buffer run out
code in function audio_generic_put_buffer_out has a problematic
behaviour. A few hundred milliseconds after playback starts the
mixing buffer and the generic buffer are nearly full and the
following pattern can be seen.

On first call of audio_pcm_hw_run_out the buffer run code in
audio_generic_put_buffer_out writes some data to the audio
hardware but the generic buffer will fill faster and is full
when audio_pcm_hw_run_out returns. This is because emulated
audio devices can produce playback data at a higher rate than
the audio backend hardware consumes this data.

On next call of audio_pcm_hw_run_out the buffer run code in
audio_generic_put_buffer_out writes some data to the audio
hardware but no audio data is transferred to the generic buffer
because the buffer is already full.

Then the pattern repeats. For the emulated audio device this
looks like the audio timer period has doubled.

This patch splits the combined generic buffer management code
and buffer run out code and calls the buffer run out code after
buffer management code to break this pattern.

The bug report is for the wav audio backend. But the problem is
not limited to this backend. All audio backends which use the
audio_generic_put_buffer_out function show this problem.

Buglink: https://bugs.launchpad.net/qemu/+bug/1858488
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-Id: <20200123074943.6699-5-vr_qemu@t-online.de>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-01-31 08:48:03 +01:00
Kővágó, Zoltán 2b9cce8c8c audio: replace shift in audio_pcm_info with bytes_per_frame
The bit shifting trick worked because the number of bytes per frame was
always a power-of-two (since QEMU only supports mono, stereo and 8, 16
and 32 bit samples).  But if we want to add support for surround sound,
this no longer holds true.

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id: 1351fd9bcce0ff20d81850c5292722194329de02.1570996490.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-10-18 08:14:05 +02:00
Kővágó, Zoltán cecc1e79bf audio: support more than two channels in volume setting
Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id: 5d3dd2ee3baaa62805e79c3901abb7415ae32461.1570996490.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-10-18 08:14:05 +02:00
Kővágó, Zoltán 571a8c522e audio: split ctl_* functions into enable_* and volume_*
This way we no longer need vararg functions, improving compile time
error detection.  Also now it's possible to check actually what commands
are supported, without needing to manually update ctl_caps.

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id: 2b08b3773569c5be055d0a0fb2f29ff64e79f0f4.1568927990.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-09-23 12:28:47 +02:00
Kővágó, Zoltán 857271a29c audio: common rate control code for timer based outputs
This commit removes the ad-hoc rate-limiting code from noaudio and
wavaudio, and replaces them with a (slightly modified) code from
spiceaudio.  This way multiple write calls (for example when the
circular buffer wraps around) do not cause problems.

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id: fd0fe5b95b13fa26d09ae77a72f99d0ea411de14.1568927990.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-09-23 12:28:47 +02:00
Kővágó, Zoltán dc88e38fa7 audio: unify input and output mixeng buffer management
Usage notes: hw->samples became hw->{mix,conv}_buf->size, except before
initialization (audio_pcm_hw_alloc_resources_*), hw->samples gives the
initial size of the STSampleBuffer.  The next commit tries to fix this
inconsistency.

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id: a78caeb2eeb6348ecb45bb2c81709570ef8ac5b3.1568927990.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-09-23 12:28:47 +02:00
Kővágó, Zoltán 3f5bbfc25a audio: remove remains of the old backend api
Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id: 497decab6d0f0fb9529bea63ec7ce0bd7b553038.1568927990.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-09-23 12:28:47 +02:00
Kővágó, Zoltán ff095e5231 audio: api for mixeng code free backends
This will make it possible to skip mixeng with audio playback and
recording, allowing us to free ourselves from the limitations of the
current mixeng (stereo, int64 samples only).  In this case, HW and SW
voices will be essentially the same, for every SW voice we will create
a HW voice, since we can no longer mix multiple voices together.

Some backends expect us to call a function when we have data ready
write()/read() style, while others provide a buffer and expects us to
directly write/read it, so for optimal performance audio_pcm_ops provide
methods for both cases.  Previously backends asked mixeng for more data
in run_out/run_it, now instead mixeng or the frontends will call the
backends, so that's why two sets of functions required.  audio.c
contains glue code between the two styles, so backends only ever have to
implement one style and frontends are free to call whichever is more
convenient for them.

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id: 15a33c03a62228922d851f7324c52f73cb8d2414.1568927990.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-09-23 12:28:47 +02:00
Kővágó, Zoltán 7520462bc1 audio: use size_t where makes sense
Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id: c5193e687fc6cc0f60cb3e90fe69ddf2027d0df1.1566168923.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-08-21 09:13:37 +02:00
Kővágó, Zoltán 1d793fec6c audio: remove read and write pcm_ops
They just called audio_pcm_sw_read/write anyway, so it makes no sense
to have them too.  (The noaudio's read is the only exception, but it
should work with the generic code too.)

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id: 92ddc98133bc4b687c6e4608b9321e7b64c0e496.1566168923.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-08-21 09:13:37 +02:00
Kővágó, Zoltán 18e2c1771b audio: do not run each backend in audio_run
audio_run is called manually by alsa and oss backends when polling.
In this case only the requesting backend should be run, not all of them.

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 10221fcea2028fa18d95cf531526ffe3b1d9b21a.1566168923.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-08-21 09:13:37 +02:00
Kővágó, Zoltán ecd97e9592 audio: basic support for multi backend audio
Audio functions no longer access glob_audio_state, instead they get an
AudioState as a parameter.  This is required in order to support
multiple backends.

glob_audio_state is also gone, and replaced with a tailq so we can store
more than one states.

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id: 67aef54f9e729a7160fe95c465351115e392164b.1566168923.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-08-21 09:13:37 +02:00
Kővágó, Zoltán 526fb0581e audio: reduce glob_audio_state usage
Remove glob_audio_state from functions, where possible without breaking
the API.  This means that most static functions in audio.c now take an
AudioState pointer instead of implicitly using glob_audio_state.  Also
included a pointer in SWVoice*, HWVoice* structs, so that functions
dealing them can know the audio state without having to pass it around
separately.

This is required in order to support multiple simultaneous audio
backends (added in a later commit).

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: b5e241f24e795267b145bcde7c6a72dd5e6037ea.1566168923.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-08-21 09:13:37 +02:00
Kővágó, Zoltán 05d2f2a64d audio: -audiodev command line option: cleanup
Remove no longer needed code.

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id: 82c176a5222a56e4fde45d2b423ada797caddd5d.1552083282.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-03-11 10:29:27 +01:00
Kővágó, Zoltán 71830221fb audio: -audiodev command line option basic implementation
Audio drivers now get an Audiodev * as config paramters, instead of the
global audio_option structs.  There is some code in audio/audio_legacy.c
that converts the old environment variables to audiodev options (this
way backends do not have to worry about legacy options).  It also
contains a replacement of -audio-help, which prints out the equivalent
-audiodev based config of the currently specified environment variables.

Note that backends are not updated and still rely on environment
variables.

Also note that (due to moving try-poll from global to backend specific
option) currently ALSA and OSS will always try poll mode, regardless of
environment variables or -audiodev options.

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id: e99a7cbdac0d13512743880660b2032024703e4c.1552083282.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-03-11 10:29:27 +01:00
Philippe Mathieu-Daudé fd5283fb4b audio: Remove AudioState from "qemu/typedefs.h"
Files requiring AudioState already include "audio_int.h".

To clean "qemu/typedefs.h", move the declaration to "audio_int.h"
(removing the forward declaration).

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2019-01-22 05:14:33 +01:00
Gerd Hoffmann d3893a39eb audio: add driver registry
Add registry for audio drivers, using the existing audio_driver struct.
Make all drivers register themself.  The old list of audio_driver struct
pointers is now a list of audio driver names, specifying the priority
(aka probe order) in case no driver is explicitly asked for.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20180306074053.22856-2-kraxel@redhat.com
2018-03-12 11:18:26 +01:00
Gerd Hoffmann 1ef1ec2a44 audio: rename CONFIG_* to CONFIG_AUDIO_*
This avoids a name clash for CONFIG_SDL, which is used by both sdl video
support and sdl audio support.  It also more clear that this is a audio
driver configuration.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20180301100547.18962-13-kraxel@redhat.com
2018-03-05 08:44:11 +01:00
Alistair Francis 470bcabd8f audio: Replace AUDIO_FUNC with __func__
Apparently we don't use __MSC_VER as a compiler anymore and we always
require a C99 compiler (which means we always have __func__) so we don't
need a special AUDIO_FUNC macro. We can just replace AUDIO_FUNC with
__func__ instead.

Checkpatch failures were manually fixed.

Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20180203084315.20497-2-armbru@redhat.com>
2018-02-06 18:26:42 +01:00
Markus Armbruster 175de52487 Clean up decorations and whitespace around header guards
Cleaned up with scripts/clean-header-guards.pl.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
2016-07-12 16:20:46 +02:00
Kővágó, Zoltán 5706db1deb audio: expose drv_opaque to init_out and init_in
Currently the opaque pointer returned by audio_driver's init is only
exposed to the driver's fini, but not to audio_pcm_ops. This way if
someone wants to share a variable with the driver and the pcm, he must
use global variables. This patch fixes it by adding a third parameter to
audio_pcm_op's init_out and init_in.

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-06-15 12:42:47 +02:00
Kővágó, Zoltán 3cec7cc22f audio: remove winwave audio driver
DirectSound should be a superior choice on Windows.

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-06-15 10:50:31 +02:00
Kővágó, Zoltán 14382605da audio: remove fmod backend
Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-06-15 10:50:31 +02:00
Kővágó, Zoltán 0bac111167 audio: remove esd backend
ESD is no longer developed and replaced by PulseAudio.

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-06-15 10:50:31 +02:00
Stefan Weil 87e613ea9e audio: Replace static functions in header file by macros, remove GCC_ATTR
Using macros instead of static functions for dolog and for ldebug
simplifies the code and can also reduce the total code size.

GCC_ATTR was only used in audio_int.h, so it is now unused and
the definition can be removed from compiler.h.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-06-21 22:52:50 +04:00
Marc-André Lureau c01b245623 audio: don't apply volume effect if backend has VOICE_VOLUME_CAP
If the audio backend is capable of volume control, don't apply
software volume (mixeng_volume ()), but instead, rely on backend
volume control. This will allow guest to have full range volume
control.

Signed-off-by: Marc-Andr? Lureau <marcandre.lureau@redhat.com>
Signed-off-by: malc <av1474@comtv.ru>
2012-04-17 16:57:57 +04:00
Marc-André Lureau 6c95ab94f9 audio: add VOICE_VOLUME ctl
Add a new PCM control operation to update the stream volume on the
audio backend.  The argument given is a SWVoiceOut/SWVoiceIn.

v4:
- verified other backends didn't fail/assert on this new control
  they randomly return 0 or -1, but we ignore return value.

Signed-off-by: Marc-Andr? Lureau <marcandre.lureau@redhat.com>
Signed-off-by: malc <av1474@comtv.ru>
2012-04-17 16:57:57 +04:00
Michael Walle 00e076795f audio: split sample conversion and volume mixing
Refactor the volume mixing, so it can be reused for capturing devices.
Additionally, it removes superfluous multiplications with the nominal
volume within the hardware voice code path.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: malc <av1474@comtv.ru>
2011-01-12 18:36:22 +03:00
Gerd Hoffmann 3e31375378 spice: add audio
Add support for the spice audio interface.  With this patch applied
audio can be forwarded over the network from/to the spice client.  Both
recording and playback is supported.

The driver is first in the driver list, but the can_be_default flag is
set only in case spice is active.  So if you have the spice protocol
enabled the spice audio driver is the default one, otherwise whatever
comes first after spice in the list.  Overriding the default using
QEMU_AUDIO_DRV works in any case.

[ v2: audio codestyle: add spaces before open parenthesis ]
[ v2: add const to silence array ]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Cc: malc <av1474@comtv.ru>
Signed-off-by: malc <av1474@comtv.ru>
2010-11-09 23:39:30 +03:00
Stefan Weil 9c9e7d51bf Move macros GCC_ATTR and GCC_FMT_ATTR to common header file
By moving the definition of GCC_ATTR and GCC_FMT_ATTR
from audio_int.h to qemu-common.h these macros are
now generally available for further patches which add
the gcc format attribute.

Newer gcc versions support format gnu_printf which is
better suited for use in QEMU than format printf
(QEMU always uses standard format strings (even with mingw32)).

V2: Use correct operator '==' (instead of '=')

Cc: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-09-22 20:15:11 +00:00
malc cb4f03e874 audio: remove last remnants of _t
Signed-off-by: malc <av1474@comtv.ru>
2009-10-15 02:40:17 +04:00
malc d56316388d Windows Waveform Audio driver (no ADC support yet)
Signed-off-by: malc <av1474@comtv.ru>
2009-10-10 01:18:24 +04:00
malc bdff253c8f audio: internal API change
pcm_ops.run_out now takes number of live samples (which will be always
greater than zero) as a second argument, every driver was calling
audio_pcm_hw_get_live_out anyway with exception of fmod which used
audio_pcm_hw_get_live_out2 for no good reason.

Signed-off-by: malc <av1474@comtv.ru>
2009-09-18 14:04:36 +04:00
malc ddabec73e6 audio: introduce audio_pcm_hw_clip_out helper function
Signed-off-by: malc <av1474@comtv.ru>
2009-09-18 14:04:36 +04:00
Blue Swirl 72cf2d4f0e Fix sys-queue.h conflict for good
Problem: Our file sys-queue.h is a copy of the BSD file, but there are
some additions and it's not entirely compatible. Because of that, there have
been conflicts with system headers on BSD systems. Some hacks have been
introduced in the commits 15cc923584,
f40d753718,
96555a96d7 and
3990d09adf but the fixes were fragile.

Solution: Avoid the conflict entirely by renaming the functions and the
file. Revert the previous hacks.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-09-12 07:36:22 +00:00
malc 713a98f8f1 audio: poll mode infrastructure
Signed-off-by: malc <av1474@comtv.ru>
2009-09-12 02:50:58 +04:00
Juan Quintela bee37f32d4 Use proper struct initializers and remove INIT_FIELD() macro
Signed-off-by: Juan Quintela <quintela@redhat.com>
2009-08-11 20:51:23 +04:00
malc 1a7dafce1d Remove any pretense that there can be more than one AudioState 2009-05-14 03:20:43 +04:00
malc 978dd63540 Avoid running audio ctl's when vm is not running
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6627 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-18 20:44:04 +00:00
malc 1ea879e558 Make audio violate POSIX less
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5864 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-03 22:48:44 +00:00
blueswir1 35f4b58c7a Prepare for changing audio_pcm_ops dynamically (partially revert r5422)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5435 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-06 18:08:30 +00:00
blueswir1 8869defe62 Make audio_pcm_opsstatic const
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5422 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-05 10:01:05 +00:00
malc b8e59f18de Pulseaudio driver
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4827 c046a42c-6fe2-441c-8c8c-71466251a162
2008-07-02 21:03:08 +00:00
balrog ca9cc28c62 pthreads-based audio and miscellaneous audio clean-up (malc).
ESD support (malc, Frederick Reeve).


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3917 c046a42c-6fe2-441c-8c8c-71466251a162
2008-01-14 04:24:29 +00:00
ths fe8f096b16 Spelling fix, by Stuart Brady.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3076 c046a42c-6fe2-441c-8c8c-71466251a162
2007-07-12 10:59:21 +00:00
bellard ec36b695b0 audio capture to wab files (malc)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2059 c046a42c-6fe2-441c-8c8c-71466251a162
2006-07-16 18:57:03 +00:00
bellard d929eba5d4 audio endianness API changes (malc)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2042 c046a42c-6fe2-441c-8c8c-71466251a162
2006-07-04 21:47:22 +00:00
bellard 8ead62cfc2 audio fixes + initial audio capture support (malc)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2040 c046a42c-6fe2-441c-8c8c-71466251a162
2006-07-04 16:51:32 +00:00
bellard 571ec3d68d audio merge (malc)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1636 c046a42c-6fe2-441c-8c8c-71466251a162
2005-11-20 16:24:34 +00:00