mirrors/pulseaudio
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git synced 2025-12-31 11:08:52 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

alsa-mixer: support up to 8 channels per mixer element

Browse source 
We have at least one USB hardware which supports the 8
channels in one mixer element:

  https://github.com/alsa-project/alsa-ucm-conf/pull/25

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2020-05-04 13:04:28 +02:00 • committed by Arun Raghavan
parent 06990e32ff
commit e0ab9fa4a4
2 changed files with 16 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

24
src/modules/alsa/alsa-mixer.c
View file

@ -1794,16 +1794,16 @@ static bool element_probe_volume(pa_alsa_element *e, snd_mixer_elem_t *me) {
alsa_id_str(buf, sizeof(buf), &e->alsa_id); alsa_id_str(buf, sizeof(buf), &e->alsa_id);
pa_log_warn("Volume element %s with no channels?", buf); pa_log_warn("Volume element %s with no channels?", buf);
return false; return false;
} else if (e->n_channels > 2) { } else if (e->n_channels > 8) {
/* FIXME: In some places code like this is used: /* FIXME: In some places code like this is used:
* *
* e->masks[alsa_channel_ids[p]][e->n_channels-1] * e->masks[alsa_channel_ids[p]][e->n_channels-1]
* *
* The definition of e->masks is * The definition of e->masks is
* *
* pa_channel_position_mask_t masks[SND_MIXER_SCHN_LAST + 1][2]; * pa_channel_position_mask_t masks[SND_MIXER_SCHN_LAST + 1][8];
* *
* Since the array size is fixed at 2, we obviously * Since the array size is fixed at 8, we obviously
* don't support elements with more than two * don't support elements with more than two
* channels... */ * channels... */
alsa_id_str(buf, sizeof(buf), &e->alsa_id); alsa_id_str(buf, sizeof(buf), &e->alsa_id);
@ -2463,7 +2463,7 @@ static pa_channel_position_mask_t parse_mask(const char *m) {
static int element_parse_override_map(pa_config_parser_state *state) { static int element_parse_override_map(pa_config_parser_state *state) {
pa_alsa_path *p; pa_alsa_path *p;
pa_alsa_element *e; pa_alsa_element *e;
const char *split_state = NULL; const char *split_state = NULL, *s;
unsigned i = 0; unsigned i = 0;
char *n; char *n;
@ -2489,12 +2489,18 @@ static int element_parse_override_map(pa_config_parser_state *state) {
} }
} }
if (pa_streq(state->lvalue, "override-map.1")) s = strstr(state->lvalue, ".");
e->masks[i++][0] = m; if (s) {
else int idx;
e->masks[i++][1] = m; pa_atoi(s + 1, &idx);
if (idx >= 1 && idx <= 8) {
e->masks[i++][idx-1] = m;
} else {
pa_log("[%s:%u] Override map index '%s' invalid in '%s'", state->filename, state->lineno, state->lvalue, state->section);
}
}
/* Later on we might add override-map.3 and so on here ... */ /* Later on we might add override-map.9 and so on here ... */
pa_xfree(n); pa_xfree(n);
} }

2
src/modules/alsa/alsa-mixer.h
View file

@ -160,7 +160,7 @@ struct pa_alsa_element {
long volume_limit; /* -1 for no configured limit */ long volume_limit; /* -1 for no configured limit */
double min_dB, max_dB; double min_dB, max_dB;
pa_channel_position_mask_t masks[SND_MIXER_SCHN_LAST + 1][2]; pa_channel_position_mask_t masks[SND_MIXER_SCHN_LAST + 1][8];
unsigned n_channels; unsigned n_channels;
pa_channel_position_mask_t merged_mask; pa_channel_position_mask_t merged_mask;