mirrors/pipewire
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pipewire/pipewire.git synced 2025-11-22 06:59:59 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

resample: make window configurable

Browse source 
Add kaiser window
This commit is contained in:
Wim Taymans 2025-11-14 18:15:38 +01:00
parent 18ff08243b
commit bfd26c98e3
5 changed files with 422 additions and 66 deletions
Download patch file Download diff file Expand all files Collapse all files

54
spa/plugins/audioconvert/resample.h
View file

@ -10,6 +10,32 @@
#define RESAMPLE_DEFAULT_QUALITY 4
struct resample_config {
#define RESAMPLE_WINDOW_DEFAULT 0
#define RESAMPLE_WINDOW_EXP 1
#define RESAMPLE_WINDOW_BLACKMAN 2
#define RESAMPLE_WINDOW_KAISER 3
uint32_t window;
uint32_t n_taps;
double cutoff;
union {
double params[32];
struct {
double A;
} exp_params;
struct {
double alpha;
} blackman_params;
struct {
double stopband_attenuation;
double transition_bandwidth;
double alpha;
} kaiser_params;
};
};
struct resample {
struct spa_log *log;
#define RESAMPLE_OPTION_PREFILL (1<<0)
@ -23,6 +49,8 @@ struct resample {
double rate;
int quality;
struct resample_config config;
void (*free) (struct resample *r);
void (*update_rate) (struct resample *r, double rate);
uint32_t (*in_len) (struct resample *r, uint32_t out_len);
@ -49,6 +77,32 @@ struct resample {
#define resample_phase(r) (r)->phase(r)
int resample_native_init(struct resample *r);
int resample_native_init_config(struct resample *r, struct resample_config *conf);
int resample_peaks_init(struct resample *r);
static const struct resample_window_info {
uint32_t window;
const char *label;
const char *description;
} resample_window_info[] = {
[RESAMPLE_WINDOW_DEFAULT] = { RESAMPLE_WINDOW_DEFAULT,
"default", "Default window", },
[RESAMPLE_WINDOW_EXP] = { RESAMPLE_WINDOW_EXP,
"exponential", "Exponential window", },
[RESAMPLE_WINDOW_BLACKMAN] = { RESAMPLE_WINDOW_BLACKMAN,
"blackman", "Blackman window", },
[RESAMPLE_WINDOW_KAISER] = { RESAMPLE_WINDOW_KAISER,
"kaiser", "Kaiser window", },
};
static inline uint32_t resample_window_from_label(const char *label)
{
SPA_FOR_EACH_ELEMENT_VAR(resample_window_info, i) {
if (spa_streq(i->label, label))
return i->window;
}
return RESAMPLE_WINDOW_EXP;
}
#endif /* RESAMPLE_H */