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98 commits

Author SHA1 Message Date
Wim Taymans
13b8c23767 Don't use SPA_AUDIO_MAX_CHANNELS directly 
Make a MAX_CHANNELS define and use that one in code. This makes it
easier to change the constant later.
 2025-10-21 09:43:06 +02:00
Wim Taymans
e355df3785 channelmix: fix channel_mask bits iteration 
Iterate the number of bits in the channel mask based on the number of
bits in the mask, not the max amount of channel positions.
 2025-04-04 17:06:43 +02:00
Wim Taymans
2c132be626 audioconvert: align some buffers 
so that we can use aligned read and writes in SSE.
 2024-10-23 12:54:23 +02:00
Wim Taymans
2c0ce6afc2 audioconvert: SSE optimize delay and convolver 2024-10-15 16:10:25 +02:00
Wim Taymans
33fb2f04c7 audioconvert: use MAX_TAPS constant 2024-10-15 12:49:16 +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
a57f2f25b6 delay: improve delay performance 
Use a wrap around delay ringbuffer. We can then avoid some modulo
arithmetic and read more efficiently.

Also handle the delay convolver case better by reversing the taps and
reading the taps and delay buffer without extra overhead.
 2024-10-15 12:14:57 +02:00
Wim Taymans
1ae4374ccf Fix compilation with -Werror=float-conversion 
Better make the conversions explicit so that we don't get any surprises.

Fixes #4065
 2024-06-18 12:17:56 +02:00
Wim Taymans
3decaa6457 audioconvert: use spa_strbuf 2023-03-22 15:41:27 +01:00
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
2895961b48 audioconvert: improve channelmix with unknown layouts 
Use a 0 mask to handle unknown layouts. When the source or destination
is an unknown layout, pair, distribute or average. When pairing, keep
track how we paired and use that to construct the matrix later.

This fixes [ UNK UNK ] -> [ FL FR ] mapping by pairing.
 2023-02-14 11:57:04 +01:00
Wim Taymans
b9999b292d channelmix: improve mixing setup 
Handle MONO layout as a real layout, not just like FC. This means it
does not share the FC mixing weights.
Only distribute and combine MONO channels when the target is also
MONO, enable normalization in this case.
Otherwise downmix and upmix the mono channels like any other channel,
which will make it respect the upmix and other settings.
Change some tests with this new way of doing things.

Fixes #3010
 2023-02-06 21:05:23 +01:00
Wim Taymans
9c2b2a64f0 audioconvert: improve debug output 
Print channelmix matrix when there is something to print. Avoids
skipping zero matrix lines in some cases.
 2022-12-16 19:50:45 +01:00
Wim Taymans
8d4fe59764 audioconvert: improve debug 
When we are mixing unnamed channels, place MONO in the debug output.
 2022-12-12 09:38:51 +01:00
Wim Taymans
25e3144887 audioconvert: skip upmix when moving channels 
When we use SIDE for REAR, don't try to upmix REAR channels and vice
versa.
 2022-11-09 09:24:03 +01:00
Wim Taymans
cadb7b4910 audioconvert: set SSE flag on SSE function 
Or else it might be selected even when we don't run on an SSE capable
machine.
 2022-11-08 18:09:02 +01:00
Wim Taymans
c8e2c4fcd6 audioconvert: debug the conversion matrix with info level 2022-11-08 17:39:16 +01:00
Wim Taymans
9cfc0eff48 audioconvert: upmix RC 2022-11-08 17:38:55 +01:00
Wim Taymans
9efb2e3463 audioconvert: optimize upmix functions with SSE 2022-10-13 10:19:04 +02:00
Wim Taymans
d22feab92a spa: add macro to simplify array iterations some more 
uint32_t i;
	for (i = 0; i < SPA_N_ELEMENTS(some_array); i++)
		.. stuff with some_array[i].foo ...

   becomes:

	SPA_FOR_EACH_ELEMENT_VAR(some_array, p)
		.. stuff with p->foo ..
 2022-09-30 16:24:26 +02:00
Wim Taymans
a30b335beb channelmix: leave volume unchanged for unknown channel volumes 
When we get an unknown number of channels, don't do anything, like it
used to be.
 2022-09-29 12:44:42 +02:00
Wim Taymans
25cf4d0a31 channelmix: use volume/mute when no channel volumes 
When setting a volume without channel volumes, use the volume/mute
instead of doing nothing.
 2022-09-29 12:35:52 +02:00
Wim Taymans
b7928799e5 channelmix: fix normalization 
Don't count the sum for unused matrix coefficients. When doing pairing,
we set the mask to ~0 and so we would otherwise count too much.

Apply normalization to the active matrix coefficients, not whatever the
loop variables end up being at the end of the loops.
 2022-09-29 12:29:36 +02:00
Wim Taymans
3b507e062c channelmix: improve debug 2022-09-29 12:26:28 +02:00
Wim Taymans
637bc6f7c4 channelmix: add optimised NxM channelmix functions 2022-09-28 17:50:59 +02:00
Wim Taymans
187006f30e audioconvert: remove some double defines 2022-09-07 16:08:21 +02:00
Wim Taymans
0c47ab76a7 channelmix: Only filter FC/LFE when present 2022-09-05 13:22:40 +02:00
Wim Taymans
3df0fb21a0 channelmix: only produce REAR/SIDE from FC in simple upmix 
Only simple upmixing would replicate the FC channel into REAR/SIDE.
The PSD method would take the diff between FL/FR (which would
be 0 if only FC is available) and not generate output.
 2022-08-11 09:37:43 +02:00
Wim Taymans
da9868594d channelmix: produce STEREO from FC 
Make it possible to produce STEREO from FC.
 2022-08-11 09:35:54 +02:00
Wim Taymans
b03b57c77a channelmix: also filter FC and LFE when no layout 
Always apply filter based on dest layout, even when distributing,
averaging or copying a signal.
 2022-08-11 09:33:34 +02:00
Wim Taymans
51f4f1fb69 audioconvert: expose the selected function names 
And debug them.
 2022-06-28 16:50:14 +02:00
Wim Taymans
da95043002 channelmix: guard against invalid channels 2022-06-23 11:40:22 +02:00
Wim Taymans
7f9ddd0f15 Add audioconvert2 2022-06-16 09:09:27 +02:00
Ole Salscheider
3695611b20 channelmix: Assign slev in mixing matrix when generating side/rear from front 
This way, PSD upmixing sounds much more natural and is in line with the
original publication.
 2022-06-14 10:58:25 +00:00
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
354a04c91d Channel mixer: Remove channelmix_f32_2_4_sse 
It does not have PSD upmixing implemented and does not allow to disable
the simple upmixing algorithm either.

Fixes #2438.
 2022-06-13 14:19:23 +00:00
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
e12e4295cf channelmix: only filter FC and LFE when upmixed 
When we have an original source with LFE and FC, don't try to mix
it but pass it unmodified.

Fixes #2280
 2022-04-12 11:51:01 +02:00
Wim Taymans
54f6f9293e channelmix: upmix disabled also disables FC and LFE generation 
Don't generate FC and LFE when upmix is disabled.

Fixes #2266
 2022-04-04 09:08:54 +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
23db50630d channelmix: add option to filter FC 
Add an option to do a lowpass filter on the FC channel to isolate
the voices better and move the higher frequencies to the stereo
channels.

See #861
 2022-03-01 11:30:12 +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
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
7241bf3c54 channelmix: remove LFE when cutoff is <= 0.0 2022-02-25 11:13:04 +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
b7279a1728 channelmix: dont make FC from synthesized FC 
When we have stereo and need to make FC, don't try to upmix the
stereo into FC again.
Fix unit test now that we create FC channels.
 2022-01-11 17:25:38 +01:00
Wim Taymans
59042251ee channelmix: also keep FC channel 
When the target has FC, make it from FL and FR in all cases.
 2022-01-11 14:47:17 +01:00
Wim Taymans
c9efae4334 channelmix: do LFE upmix when lfe_cutoff is set 
Require only the lfe_cutoff be set when generating LFE.
This way you can only generate LFE without having to enable upmix
for all other channels.
 2022-01-11 12:44:36 +01:00