mirrors/pulseaudio
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git synced 2025-11-03 09:01:50 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

fix support for ALSA devices which lack dB information

Browse source
This commit is contained in:
Lennart Poettering 2008-10-01 03:26:45 +02:00
parent c4bdc2fbbb
commit 99acad7782
2 changed files with 105 additions and 39 deletions
Download patch file Download diff file Expand all files Collapse all files

73
src/modules/module-alsa-source.c
View file

@ -700,6 +700,21 @@ static int mixer_callback(snd_mixer_elem_t *elem, unsigned int mask) {
return 0;
}
static pa_volume_t from_alsa_volume(struct userdata *u, long alsa_vol) {
return (pa_volume_t) round(((double) (alsa_vol - u->hw_volume_min) * PA_VOLUME_NORM) /
(double) (u->hw_volume_max - u->hw_volume_min));
}
static long to_alsa_volume(struct userdata *u, pa_volume_t vol) {
long alsa_vol;
alsa_vol = (long) round(((double) vol * (double) (u->hw_volume_max - u->hw_volume_min))
/ PA_VOLUME_NORM) + u->hw_volume_min;
return PA_CLAMP_UNLIKELY(alsa_vol, u->hw_volume_min, u->hw_volume_max);
}
static int source_get_volume_cb(pa_source *s) {
struct userdata *u = s->userdata;
int err;
@ -732,23 +747,31 @@ static int source_get_volume_cb(pa_source *s) {
if ((err = snd_mixer_selem_get_capture_volume(u->mixer_elem, u->mixer_map[i], &alsa_vol)) < 0)
goto fail;
r.values[i] = (pa_volume_t) round(((double) (alsa_vol - u->hw_volume_min) * PA_VOLUME_NORM) / (double) (u->hw_volume_max - u->hw_volume_min));
r.values[i] = from_alsa_volume(u, alsa_vol);
}
}
} else {
long alsa_vol;
pa_assert(u->hw_dB_supported);
if (u->hw_dB_supported) {
if ((err = snd_mixer_selem_get_capture_dB(u->mixer_elem, SND_MIXER_SCHN_MONO, &alsa_vol)) < 0)
goto fail;
if ((err = snd_mixer_selem_get_capture_dB(u->mixer_elem, SND_MIXER_SCHN_MONO, &alsa_vol)) < 0)
goto fail;
#ifdef HAVE_VALGRIND_MEMCHECK_H
VALGRIND_MAKE_MEM_DEFINED(&alsa_vol, sizeof(alsa_vol));
VALGRIND_MAKE_MEM_DEFINED(&alsa_vol, sizeof(alsa_vol));
#endif
pa_cvolume_set(&r, s->sample_spec.channels, pa_sw_volume_from_dB((double) alsa_vol / 100.0));
pa_cvolume_set(&r, s->sample_spec.channels, pa_sw_volume_from_dB((double) alsa_vol / 100.0));
} else {
if ((err = snd_mixer_selem_get_capture_volume(u->mixer_elem, SND_MIXER_SCHN_MONO, &alsa_vol)) < 0)
goto fail;
pa_cvolume_set(&r, s->sample_spec.channels, from_alsa_volume(u, alsa_vol));
}
}
pa_log_debug("Read hardware volume: %s", pa_cvolume_snprint(t, sizeof(t), &r));
@ -784,7 +807,7 @@ static int source_set_volume_cb(pa_source *s) {
pa_assert(u);
pa_assert(u->mixer_elem);
if (u->mixer_seperate_channels) {
if (u->mixer_seperate_channels) {
r.channels = s->sample_spec.channels;
@ -806,10 +829,9 @@ static int source_set_volume_cb(pa_source *s) {
goto fail;
r.values[i] = pa_sw_volume_from_dB((double) alsa_vol / 100.0);
} else {
alsa_vol = (long) round(((double) vol * (double) (u->hw_volume_max - u->hw_volume_min)) / PA_VOLUME_NORM) + u->hw_volume_min;
alsa_vol = PA_CLAMP_UNLIKELY(alsa_vol, u->hw_volume_min, u->hw_volume_max);
} else {
alsa_vol = to_alsa_volume(u, vol);
if ((err = snd_mixer_selem_set_capture_volume(u->mixer_elem, u->mixer_map[i], alsa_vol)) < 0)
goto fail;
@ -817,7 +839,7 @@ static int source_set_volume_cb(pa_source *s) {
if ((err = snd_mixer_selem_get_capture_volume(u->mixer_elem, u->mixer_map[i], &alsa_vol)) < 0)
goto fail;
r.values[i] = (pa_volume_t) round(((double) (alsa_vol - u->hw_volume_min) * PA_VOLUME_NORM) / (double) (u->hw_volume_max - u->hw_volume_min));
r.values[i] = from_alsa_volume(u, alsa_vol);
}
}
@ -825,20 +847,31 @@ static int source_set_volume_cb(pa_source *s) {
pa_volume_t vol;
long alsa_vol;
pa_assert(u->hw_dB_supported);
vol = pa_cvolume_max(&s->volume);
alsa_vol = (long) (pa_sw_volume_to_dB(vol) * 100);
alsa_vol = PA_CLAMP_UNLIKELY(alsa_vol, u->hw_dB_min, u->hw_dB_max);
if (u->hw_dB_supported) {
alsa_vol = (long) (pa_sw_volume_to_dB(vol) * 100);
alsa_vol = PA_CLAMP_UNLIKELY(alsa_vol, u->hw_dB_min, u->hw_dB_max);
if ((err = snd_mixer_selem_set_capture_dB_all(u->mixer_elem, alsa_vol, 1)) < 0)
goto fail;
if ((err = snd_mixer_selem_set_capture_dB_all(u->mixer_elem, alsa_vol, 1)) < 0)
goto fail;
if ((err = snd_mixer_selem_get_capture_dB(u->mixer_elem, SND_MIXER_SCHN_MONO, &alsa_vol)) < 0)
goto fail;
if ((err = snd_mixer_selem_get_capture_dB(u->mixer_elem, SND_MIXER_SCHN_MONO, &alsa_vol)) < 0)
goto fail;
pa_cvolume_set(&r, s->volume.channels, pa_sw_volume_from_dB((double) alsa_vol / 100.0));
pa_cvolume_set(&r, s->volume.channels, pa_sw_volume_from_dB((double) alsa_vol / 100.0));
} else {
alsa_vol = to_alsa_volume(u, vol);
if ((err = snd_mixer_selem_set_capture_volume_all(u->mixer_elem, alsa_vol)) < 0)
goto fail;
if ((err = snd_mixer_selem_get_capture_volume(u->mixer_elem, SND_MIXER_SCHN_MONO, &alsa_vol)) < 0)
goto fail;
pa_cvolume_set(&r, s->sample_spec.channels, from_alsa_volume(u, alsa_vol));
}
}
u->hardware_volume = r;