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32 commits

Author SHA1 Message Date
Wim Taymans
0868ff1ada math: improve denormal check 
Use isnormal() when we can
 2025-01-13 16:10:34 +01:00
Wim Taymans
2c0ce6afc2 audioconvert: SSE optimize delay and convolver 2024-10-15 16:10:25 +02:00
Wim Taymans
ad84c45c0c audioconvert: optimize lr4 handling 
Make an SSE optimized LR4 function and one that handles 2 LR4s in
parallel.
 2024-10-15 12:20:04 +02:00
Wim Taymans
fec3730489 audioconvert: avoid a memcpy when we can 2024-10-15 12:19:17 +02:00
Barnabás Pőcze
934ab3036e treewide: use SPDX tags to specify copyright information 
SPDX tags make the licensing information easy to understand and clear,
and they are machine parseable.

See https://spdx.dev for more information.
 2023-02-16 10:54:48 +00:00
Wim Taymans
497c695d6f channelmix: optimize some more nXm cases 
Loop though coefficients, when all are 0, clear the destination.
When only one coefficient is used, simply copy with volume.
Otherwise run the complete convolution.
 2022-09-29 13:21:23 +02:00
Wim Taymans
637bc6f7c4 channelmix: add optimised NxM channelmix functions 2022-09-28 17:50:59 +02:00
Wim Taymans
8e1f0628f7 channelmix: add 3p1_2 and use this for quad conversions 
Simplify some SSE versions
 2022-06-13 20:35:00 +02:00
Ole Salscheider
5dc4434dc7 channelmix: Implement PSD upmixing for stereo -> quad 
Fixes #2436.
 2022-06-13 14:19:23 +00:00
Wim Taymans
e353999028 channelmix: use average for center and LFE 
Stops the LFE from clipping.
 2022-04-20 16:09:39 +02:00
Wim Taymans
66e4334c92 channelmix: reuse more functions 
Make some copy/vol functions and reuse them.
Reuse the 2->3p1 upmix code, tweak it a little to that the widen
param is always used.
 2022-04-12 11:54:27 +02:00
Wim Taymans
bc5b486cb9 channelmix: add simple upmix method 
Add a property to select the upmix method. PSD is enabled by default
but a new simple upmixing algorithm is available that duplicates
channels and avoids lowpass filter on the FC and disables widening.

Fixes #861
 2022-03-14 15:33:07 +01:00
Wim Taymans
5b3388e4ac audioconvert: add optional hilbert transform to rear channels 
Add an option to do a hilbert transform on the generated rear channels
to do a 90 degree pahse shift on them. This can improve spacialization
of the rear channels.

See #861
 2022-03-01 11:09:43 +01:00
Wim Taymans
5dd0a12875 channelmix: add option for stereo widen 
When generating FC, add an option to subtract some of the generated
FC from the FL and FR channel to move the sound more to the center.

See #861
 2022-03-01 10:28:11 +01:00
Wim Taymans
60b338d4cf channelmix: place L-R in rear channels 
L-R is supposed to be the ambient sound, which should sound better in
the rear channels.
 2022-03-01 10:14:07 +01:00
Wim Taymans
5a307c11e1 audioconvert: add delay to rear channels when upmixing 
See #861
 2022-03-01 09:56:12 +01:00
Wim Taymans
d62d2764e8 channelmix: improve corssover processing 
Apply volume after crossover, optimize when disabled or silent.
 2022-03-01 09:08:17 +01:00
Wim Taymans
2e8e8938bc channelmix: add stereo to 7.1 upmix 2022-02-24 16:09:14 +01:00
Wim Taymans
b1ca470d99 channelmix: don't pass channels around 
We have this info in the channelmix structure.
 2022-02-24 13:09:25 +01:00
Wim Taymans
5724093343 audioconvert: run lr4 on tagged channels in generic case 
Mark the LFE channels and run the lowpass filter on them in
the generic case. Generates LFE correctly in 2.1 upmix case.

See #1095
 2021-04-26 17:34:14 +02:00
Wim Taymans
14e8073d18 audioconvert: add LFE filter 
Use a lowpass filter to generate LFE from the stereo channels.
 2021-03-17 11:28:40 +01:00
Wim Taymans
e51cc5b537 channelmix: Prepare for generating LFE channel 
Add channelmix.lfe-cutoff property, 0 is disabled
Disable upmix by default
 2021-03-17 11:09:19 +01:00
Wim Taymans
17fd38c3a5 channelmix: use front-center matrix values 
Use the front-center matrix values to mix left and right.
 2021-03-14 15:42:53 +01:00
Wim Taymans
00d8d1472d channelmix: fix 7.1 to quad downmix 2021-03-01 19:51:14 +01:00
Wim Taymans
d080cd4819 channelmix: fix 7.1 to stereo and 3.1 downmix 2021-02-25 16:18:40 +01:00
Wim Taymans
9a7cbeea83 channelmix: improve undefined channel layout 
When we have no channel layout, just copy input to output
channel.
Optimize this case in the mixer implementation.
 2020-09-04 13:41:24 +02:00
Wim Taymans
f7d8fef070 channelmix: normalize volumes 
Normalize the volumes.
Don't mix in LFE by default but add an option
Move some booleans to flags
Improve some checks for fastpaths.
 2020-09-03 13:20:36 +02:00
Wim Taymans
4867edb947 channelmix: read mix coefficients correctly 
Fix 5p1 to stereo mixdown by reading the coefficients correctly.
Align 5p1 to quad SSE and C implementation

Fixes #272
 2020-09-02 11:15:23 +02:00
Wim Taymans
87ae7a8011 channelmix: apply channel volumes correctly 2019-08-14 14:56:16 +02:00
Wim Taymans
c6a7b3eedb channelmix: implement per channel volume 
Implement per channel volume on channelmix. Extend control on stream to
take an array of values when possible.

Remove name argument from pw_node_new and pw_device_new. We can pass
this as a property instead.

Improve properties on nodes to more closely match what pulseaudio does.
Don't let the monitor do too much with the udev properties but let the
session manager set the description and icon-names.

Remove some change_mask flags for things that don't change in
introspect. Use the flags to mark changes in -cli and -monitor.
 2019-08-12 15:14:39 +02:00
Wim Taymans
d8e399dee9 audioconvert: pass state to functions 
Pass some state to convert and channelmix functions. This makes it
possible to select per channel optimized convert functions but
also makes it possible to implement noise shaping later.
Pass the channelmix matrix and volume in the state.
Handle specialized 2 channel s16 -> f32 conversion
 2019-03-29 17:39:59 +01:00
Wim Taymans
d260cb19be audioconvert: compile c version separately 
Also compile the c versions in a separate module with their own
flags.
 2019-03-28 21:07:53 +01:00