mirrors/pipewire
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pipewire/pipewire.git synced 2026-04-04 07:15:35 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

channelmix: make up/downmix levels configurable

Browse source 
Add channelmix.center-level, channelmix.surround-level and
channelmix.lfe-level to control how center, surround and LFE is
up/downmixed.

Fixes #5198
This commit is contained in:
Wim Taymans 2026-03-30 17:50:48 +02:00
parent 03f894bab0
commit 18c97222c4
12 changed files with 119 additions and 25 deletions
Download patch file Download diff file Expand all files Collapse all files

15
spa/plugins/audioconvert/channelmix-ops.h
View file

@ -28,6 +28,17 @@
#define CHANNELMIX_OPS_MAX_ALIGN 16
#define CHANNELMIX_DEFAULT_OPTIONS (CHANNELMIX_OPTION_UPMIX | CHANNELMIX_OPTION_MIX_LFE)
#define CHANNELMIX_DEFAULT_UPMIX CHANNELMIX_UPMIX_NONE
#define CHANNELMIX_DEFAULT_LFE_CUTOFF 0.0f
#define CHANNELMIX_DEFAULT_FC_CUTOFF 0.0f
#define CHANNELMIX_DEFAULT_REAR_DELAY 0.0f
#define CHANNELMIX_DEFAULT_CENTER_LEVEL 0.707106781f
#define CHANNELMIX_DEFAULT_SURROUND_LEVEL 0.707106781f
#define CHANNELMIX_DEFAULT_LFE_LEVEL 0.5f
#define CHANNELMIX_DEFAULT_WIDEN 0.0f
#define CHANNELMIX_DEFAULT_HILBERT_TAPS 0
struct channelmix {
uint32_t src_chan;
uint32_t dst_chan;
@ -60,6 +71,9 @@ struct channelmix {
float fc_cutoff; /* in Hz, 0 is disabled */
float rear_delay; /* in ms, 0 is disabled */
float widen; /* stereo widen. 0 is disabled */
float center_level; /* center down/upmix level, sqrt(1/2) */
float lfe_level; /* lfe down/upmix level, 1/2 */
float surround_level; /* surround down/upmix level, sqrt(1/2) */
uint32_t hilbert_taps; /* to phase shift, 0 disabled */
struct lr4 lr4[MAX_CHANNELS];
@ -80,6 +94,7 @@ struct channelmix {
void *data;
};
void channelmix_reset(struct channelmix *mix);
int channelmix_init(struct channelmix *mix);
static const struct channelmix_upmix_info {