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alsa-sink: take base volume into account when applying hw volume

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Currently if sink base volume differs from 0dB and sync-volume is used,
wrong volume values are written to hw. This patch fixes that.

Signed-off-by: Juho Hämäläinen <ext-juho.hamalainen@nokia.com>
This commit is contained in:
Juho Hämäläinen 2010-11-25 15:15:17 +02:00 • committed by Colin Guthrie
parent 53f2294d16
commit 027786c6de
1 changed files with 8 additions and 2 deletions
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10
src/modules/alsa/alsa-sink.c
View file

@ -1263,12 +1263,18 @@ static void sink_write_volume_cb(pa_sink *s) {
pa_assert(u->mixer_handle);
pa_assert(s->flags & PA_SINK_SYNC_VOLUME);
/* Shift up by the base volume */
pa_sw_cvolume_divide_scalar(&hw_vol, &hw_vol, s->base_volume);
if (pa_alsa_path_set_volume(u->mixer_path, u->mixer_handle, &s->channel_map, &hw_vol, TRUE) < 0)
pa_log_error("Writing HW volume failed");
else {
pa_cvolume tmp_vol;
pa_bool_t accurate_enough;
/* Shift down by the base volume, so that 0dB becomes maximum volume */
pa_sw_cvolume_multiply_scalar(&hw_vol, &hw_vol, s->base_volume);
pa_sw_cvolume_divide(&tmp_vol, &hw_vol, &s->thread_info.current_hw_volume);
accurate_enough =
(pa_cvolume_min(&tmp_vol) >= (PA_VOLUME_NORM - VOLUME_ACCURACY)) &&
@ -1278,10 +1284,10 @@ static void sink_write_volume_cb(pa_sink *s) {
char vol_str_pcnt[PA_CVOLUME_SNPRINT_MAX];
char vol_str_db[PA_SW_CVOLUME_SNPRINT_DB_MAX];
pa_log_debug("Written HW volume did not match with the request %s != %s",
pa_log_debug("Written HW volume did not match with the request: %s (request) != %s",
pa_cvolume_snprint(vol_str_pcnt, sizeof(vol_str_pcnt), &s->thread_info.current_hw_volume),
pa_cvolume_snprint(vol_str_pcnt, sizeof(vol_str_pcnt), &hw_vol));
pa_log_debug(" in dB: %s != %s",
pa_log_debug(" in dB: %s (request) != %s",
pa_sw_cvolume_snprint_dB(vol_str_db, sizeof(vol_str_db), &s->thread_info.current_hw_volume),
pa_sw_cvolume_snprint_dB(vol_str_db, sizeof(vol_str_db), &hw_vol));
}