int main(int argc, char **argv)
{
pa_cvolume volume, *new_volume;
pa_channel_map channel_map;
float balance;
char buf[1024];
int i;
memset(&volume, 0, sizeof(pa_cvolume));
volume.channels = 4;
volume.values[0] = 1500;
volume.values[1] = 1000;
volume.values[2] = 1000;
volume.values[3] = 1000;
//pa_cvolume_set(&volume, 4, 1500);
memset(&channel_map, 0, sizeof(pa_channel_map));
channel_map.channels = 4;
channel_map.map[0] = 1;
channel_map.map[1] = 2;
channel_map.map[2] = 8;
channel_map.map[3] = 9;
printf("PA_CVOLUME_SNPRINT_MAX: %d\n", PA_CVOLUME_SNPRINT_MAX);
printf("PA_DECIBEL_MININFTY:%f\n", PA_DECIBEL_MININFTY);
printf("PA_SW_CVOLUME_SNPRINT_DB_MAX: %d\n", PA_SW_CVOLUME_SNPRINT_DB_MAX);
printf("PA_SW_VOLUME_SNPRINT_DB_MAX: %d\n", PA_SW_VOLUME_SNPRINT_DB_MAX);
printf("PA_VOLUME_INVALID: %u\n", PA_VOLUME_INVALID);
printf("PA_VOLUME_MAX: %d\n", PA_VOLUME_MAX);
printf("PA_VOLUME_MUTED: %d\n", PA_VOLUME_MUTED);
printf("PA_VOLUME_NORM: %d\n", PA_VOLUME_NORM);
printf("PA_VOLUME_SNPRINT_MAX: %d\n", PA_VOLUME_SNPRINT_MAX);
printf("PA_VOLUME_UI_MAX: %d\n", PA_VOLUME_UI_MAX);
printf("mute dB: %f\n", pa_sw_volume_to_dB(PA_VOLUME_MUTED));
printf("normal dB: %f\n", pa_sw_volume_to_dB(PA_VOLUME_NORM));
printf("ui_max dB: %f\n", pa_sw_volume_to_dB(PA_VOLUME_UI_MAX));
printf("get_balance:%f\n", pa_cvolume_get_balance(&volume, &channel_map));
printf("volume = %s\n", pa_cvolume_snprint(buf, sizeof(buf)-1, &volume));
for (i = 0; i < volume.channels; i++) {
printf("\t%d channel volume: %d\n", i, volume.values[i]);
}
printf("map = %s\n", pa_channel_map_snprint(buf, sizeof(buf)-1, &channel_map));
printf("input new balance:");
scanf("%f", &balance);
new_volume = pa_cvolume_set_balance(&volume, &channel_map, balance);
printf("after get_balance:%f\n", pa_cvolume_get_balance(&volume, &channel_map));
printf("after volume = %s\n", pa_cvolume_snprint(buf, sizeof(buf)-1, &volume));
for (i = 0; i < volume.channels; i++) {
printf("\t%d channel volume: %d\n", i, volume.values[i]);
}
printf("after map = %s\n", pa_channel_map_snprint(buf, sizeof(buf)-1, &channel_map));
return 0;
}
static pa_hook_result_t sink_input_fixate_hook_callback(pa_core *core, pa_sink_input_new_data *data, struct userdata *u) {
const char *hpos, *vpos, *role, *id;
double f;
char t[PA_CVOLUME_SNPRINT_MAX];
pa_cvolume v;
pa_assert(data);
if (!(role = pa_proplist_gets(data->proplist, PA_PROP_MEDIA_ROLE)))
return PA_HOOK_OK;
if (!pa_streq(role, "event"))
return PA_HOOK_OK;
if ((id = pa_proplist_gets(data->proplist, PA_PROP_EVENT_ID))) {
/* The test sounds should never be positioned in space, since
* they might be triggered themselves to configure the speakers
* in space, which we don't want to mess up. */
if (pa_startswith(id, "audio-channel-"))
return PA_HOOK_OK;
if (pa_streq(id, "audio-volume-change"))
return PA_HOOK_OK;
if (pa_streq(id, "audio-test-signal"))
return PA_HOOK_OK;
}
if (!(hpos = pa_proplist_gets(data->proplist, PA_PROP_EVENT_MOUSE_HPOS)))
hpos = pa_proplist_gets(data->proplist, PA_PROP_WINDOW_HPOS);
if (!(vpos = pa_proplist_gets(data->proplist, PA_PROP_EVENT_MOUSE_VPOS)))
vpos = pa_proplist_gets(data->proplist, PA_PROP_WINDOW_VPOS);
if (!hpos && !vpos)
return PA_HOOK_OK;
pa_cvolume_reset(&v, data->sink->sample_spec.channels);
if (hpos) {
if (parse_pos(hpos, &f) < 0)
return PA_HOOK_OK;
if (pa_channel_map_can_balance(&data->sink->channel_map)) {
pa_log_debug("Positioning event sound '%s' horizontally at %0.2f.", pa_strnull(pa_proplist_gets(data->proplist, PA_PROP_EVENT_ID)), f);
pa_cvolume_set_balance(&v, &data->sink->channel_map, f*2.0-1.0);
}
}
if (vpos) {
if (parse_pos(vpos, &f) < 0)
return PA_HOOK_OK;
if (pa_channel_map_can_fade(&data->sink->channel_map)) {
pa_log_debug("Positioning event sound '%s' vertically at %0.2f.", pa_strnull(pa_proplist_gets(data->proplist, PA_PROP_EVENT_ID)), f);
pa_cvolume_set_fade(&v, &data->sink->channel_map, f*2.0-1.0);
}
}
pa_log_debug("Final volume factor %s.", pa_cvolume_snprint(t, sizeof(t), &v));
pa_sink_input_new_data_add_volume_factor_sink(data, u->name, &v);
return PA_HOOK_OK;
}
int main(int argc, char *argv[]) {
pa_volume_t v;
pa_cvolume cv;
float b;
pa_channel_map map;
pa_volume_t md = 0;
unsigned mdn = 0;
if (!getenv("MAKE_CHECK"))
pa_log_set_level(PA_LOG_DEBUG);
pa_log("Attenuation of sample 1 against 32767: %g dB", 20.0*log10(1.0/32767.0));
pa_log("Smallest possible attenuation > 0 applied to 32767: %li", lrint(32767.0*pa_sw_volume_to_linear(1)));
for (v = PA_VOLUME_MUTED; v <= PA_VOLUME_NORM*2; v += 256) {
double dB = pa_sw_volume_to_dB(v);
double f = pa_sw_volume_to_linear(v);
pa_log_debug("Volume: %3i; percent: %i%%; decibel %0.2f; linear = %0.2f; volume(decibel): %3i; volume(linear): %3i",
v, (v*100)/PA_VOLUME_NORM, dB, f, pa_sw_volume_from_dB(dB), pa_sw_volume_from_linear(f));
}
for (v = PA_VOLUME_MUTED; v <= PA_VOLUME_NORM*2; v += 256) {
char s[PA_CVOLUME_SNPRINT_MAX], t[PA_SW_CVOLUME_SNPRINT_DB_MAX];
pa_cvolume_set(&cv, 2, v);
pa_log_debug("Volume: %3i [%s] [%s]", v, pa_cvolume_snprint(s, sizeof(s), &cv), pa_sw_cvolume_snprint_dB(t, sizeof(t), &cv));
}
map.channels = cv.channels = 2;
map.map[0] = PA_CHANNEL_POSITION_LEFT;
map.map[1] = PA_CHANNEL_POSITION_RIGHT;
for (cv.values[0] = PA_VOLUME_MUTED; cv.values[0] <= PA_VOLUME_NORM*2; cv.values[0] += 4096)
for (cv.values[1] = PA_VOLUME_MUTED; cv.values[1] <= PA_VOLUME_NORM*2; cv.values[1] += 4096) {
char s[PA_CVOLUME_SNPRINT_MAX];
pa_log_debug("Volume: [%s]; balance: %2.1f", pa_cvolume_snprint(s, sizeof(s), &cv), pa_cvolume_get_balance(&cv, &map));
}
for (cv.values[0] = PA_VOLUME_MUTED+4096; cv.values[0] <= PA_VOLUME_NORM*2; cv.values[0] += 4096)
for (cv.values[1] = PA_VOLUME_MUTED; cv.values[1] <= PA_VOLUME_NORM*2; cv.values[1] += 4096)
for (b = -1.0f; b <= 1.0f; b += 0.2f) {
char s[PA_CVOLUME_SNPRINT_MAX];
pa_cvolume r;
float k;
pa_log_debug("Before: volume: [%s]; balance: %2.1f", pa_cvolume_snprint(s, sizeof(s), &cv), pa_cvolume_get_balance(&cv, &map));
r = cv;
pa_cvolume_set_balance(&r, &map,b);
k = pa_cvolume_get_balance(&r, &map);
pa_log_debug("After: volume: [%s]; balance: %2.1f (intended: %2.1f) %s", pa_cvolume_snprint(s, sizeof(s), &r), k, b, k < b-.05 || k > b+.5 ? "MISMATCH" : "");
}
for (v = PA_VOLUME_MUTED; v <= PA_VOLUME_NORM*2; v += 51) {
double l = pa_sw_volume_to_linear(v);
pa_volume_t k = pa_sw_volume_from_linear(l);
double db = pa_sw_volume_to_dB(v);
pa_volume_t r = pa_sw_volume_from_dB(db);
pa_volume_t w;
pa_assert(k == v);
pa_assert(r == v);
for (w = PA_VOLUME_MUTED; w < PA_VOLUME_NORM*2; w += 37) {
double t = pa_sw_volume_to_linear(w);
double db2 = pa_sw_volume_to_dB(w);
pa_volume_t p, p1, p2;
double q, qq;
p = pa_sw_volume_multiply(v, w);
qq = db + db2;
p2 = pa_sw_volume_from_dB(qq);
q = l*t;
p1 = pa_sw_volume_from_linear(q);
if (p2 > p && p2 - p > md)
md = p2 - p;
if (p2 < p && p - p2 > md)
md = p - p2;
if (p1 > p && p1 - p > md)
md = p1 - p;
if (p1 < p && p - p1 > md)
md = p - p1;
if (p1 != p || p2 != p)
mdn++;
}
}
pa_log("max deviation: %lu n=%lu", (unsigned long) md, (unsigned long) mdn);
pa_assert(md <= 1);
pa_assert(mdn <= 251);
return 0;
}
