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define 0dB in PA as maximum amplification

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This commit is contained in:
Lennart Poettering 2008-10-08 04:02:10 +02:00
parent a8dc2aaa82
commit 068afb3478
2 changed files with 12 additions and 8 deletions
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10
src/modules/module-alsa-source.c
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@ -742,7 +742,7 @@ static int source_get_volume_cb(pa_source *s) {
VALGRIND_MAKE_MEM_DEFINED(&alsa_vol, sizeof(alsa_vol));
#endif
r.values[i] = pa_sw_volume_from_dB((double) alsa_vol / 100.0);
r.values[i] = pa_sw_volume_from_dB((double) (alsa_vol - u->hw_dB_max) / 100.0);
} else {
if ((err = snd_mixer_selem_get_capture_volume(u->mixer_elem, u->mixer_map[i], &alsa_vol)) < 0)
@ -764,7 +764,7 @@ static int source_get_volume_cb(pa_source *s) {
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 - u->hw_dB_max) / 100.0));
} else {
@ -821,6 +821,7 @@ static int source_set_volume_cb(pa_source *s) {
if (u->hw_dB_supported) {
alsa_vol = (long) (pa_sw_volume_to_dB(vol) * 100);
alsa_vol += u->hw_dB_max;
alsa_vol = PA_CLAMP_UNLIKELY(alsa_vol, u->hw_dB_min, u->hw_dB_max);
if ((err = snd_mixer_selem_set_capture_dB(u->mixer_elem, u->mixer_map[i], alsa_vol, 1)) < 0)
@ -829,7 +830,7 @@ static int source_set_volume_cb(pa_source *s) {
if ((err = snd_mixer_selem_get_capture_dB(u->mixer_elem, u->mixer_map[i], &alsa_vol)) < 0)
goto fail;
r.values[i] = pa_sw_volume_from_dB((double) alsa_vol / 100.0);
r.values[i] = pa_sw_volume_from_dB((double) (alsa_vol - u->hw_dB_max) / 100.0);
} else {
alsa_vol = to_alsa_volume(u, vol);
@ -852,6 +853,7 @@ static int source_set_volume_cb(pa_source *s) {
if (u->hw_dB_supported) {
alsa_vol = (long) (pa_sw_volume_to_dB(vol) * 100);
alsa_vol += u->hw_dB_max;
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)
@ -860,7 +862,7 @@ static int source_set_volume_cb(pa_source *s) {
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 - u->hw_dB_max) / 100.0));
} else {
alsa_vol = to_alsa_volume(u, vol);