static void
sink_subscribe_cb(pa_core *c, pa_subscription_event_type_t t, uint32_t idx,
void *userdata)
{
struct userdata *u = (struct userdata *)userdata;
if (t == PA_SUBSCRIPTION_EVENT_CHANGE)
{
pa_sink *sink = PA_SINK(pa_idxset_get_by_index(c->sinks, idx));
if (sink)
{
if (u->master_sink == sink)
{
const pa_cvolume *vol = pa_sink_get_volume(sink, 0, 0);
int aep_step;
u->linear_q15_master_volume_L = lrint(pa_sw_volume_to_linear(vol->values[0]) * 32767.0);
if (vol->channels == 1)
u->linear_q15_master_volume_R = lrint(pa_sw_volume_to_linear(vol->values[0]) * 32767.0);
else
u->linear_q15_master_volume_R = lrint(pa_sw_volume_to_linear(vol->values[1]) * 32767.0);
aep_step = voice_pa_vol_to_aep_step(u, vol->values[0]);
if (voice_cmt_ul_is_active_iothread(u) ||
(u->voip_source && PA_SOURCE_IS_LINKED(u->voip_source->state) && pa_source_used_by(u->voip_source)))
{
if (aep_step <= 0)
{
voice_update_aep_volume(0);
voice_update_sidetone_gain(0);
}
else
{
voice_update_aep_volume(aep_step - 1);
voice_update_sidetone_gain(aep_step - 1);
}
}
xprot_change_volume(u->xprot, u->linear_q15_master_volume_L, u->linear_q15_master_volume_R);
}
}
}
}
double pa_sw_volume_to_dB(pa_volume_t v) {
pa_return_val_if_fail(PA_VOLUME_IS_VALID(v), PA_DECIBEL_MININFTY);
if (v <= PA_VOLUME_MUTED)
return PA_DECIBEL_MININFTY;
return linear_to_dB(pa_sw_volume_to_linear(v));
}
static void calc_linear_float_volume(float linear[], const pa_cvolume *volume) {
unsigned channel, nchannels, padding;
pa_assert(linear);
pa_assert(volume);
nchannels = volume->channels;
for (channel = 0; channel < nchannels; channel++)
linear[channel] = (float) pa_sw_volume_to_linear(volume->values[channel]);
for (padding = 0; padding < VOLUME_PADDING; padding++, channel++)
linear[channel] = linear[padding];
}
static void calc_linear_integer_volume(int32_t linear[], const pa_cvolume *volume) {
unsigned channel, nchannels, padding;
pa_assert(linear);
pa_assert(volume);
nchannels = volume->channels;
for (channel = 0; channel < nchannels; channel++)
linear[channel] = (int32_t) lrint(pa_sw_volume_to_linear(volume->values[channel]) * 0x10000);
for (padding = 0; padding < VOLUME_PADDING; padding++, channel++)
linear[channel] = linear[padding];
}
int main(PA_GCC_UNUSED int argc, PA_GCC_UNUSED char *argv[]) {
pa_volume_t v;
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);
printf("Volume: %3i; percent: %i%%; decibel %0.2f; linear = %0.2f; volume(decibel): %3i; volume(linear): %3i\n",
v, (v*100)/PA_VOLUME_NORM, dB, f, pa_sw_volume_from_dB(dB), pa_sw_volume_from_linear(f));
}
return 0;
}
/**
* @brief Callback function called when the information on the
* context's sink is retrieved.
* @param ctx Context which operation has succeeded
* @param info Structure containing the sink's information
* @param this_gen pulse_driver_t pointer for the PulseAudio output
* instance.
*
* This function saves the volume field of the passed structure to the
* @c cvolume variable of the output instance and send an update volume
* event to the frontend.
*/
static void __xine_pa_sink_info_callback(pa_context *c, const pa_sink_input_info *info,
int is_last, void *userdata) {
pulse_driver_t *const this = (pulse_driver_t *) userdata;
if (is_last < 0) {
xprintf (this->xine, XINE_VERBOSITY_DEBUG, "audio_pulse_out: Failed to get sink input info: %s\n",
pa_strerror(pa_context_errno(this->context)));
return;
}
if (!info)
return;
this->cvolume = info->volume;
this->swvolume = pa_cvolume_avg(&info->volume);
#if PA_PROTOCOL_VERSION >= 11
/* PulseAudio 0.9.7 and newer */
this->muted = info->mute;
#else
this->muted = pa_cvolume_is_muted (&this->cvolume);
#endif
/* send update volume event to frontend */
xine_event_t event;
xine_audio_level_data_t data;
xine_stream_t *stream;
xine_list_iterator_t ite;
data.right = data.left = (int) (pa_sw_volume_to_linear(this->swvolume)*100);
data.mute = this->muted;
event.type = XINE_EVENT_AUDIO_LEVEL;
event.data = &data;
event.data_length = sizeof(data);
pthread_mutex_lock(&this->xine->streams_lock);
for(ite = xine_list_front(this->xine->streams); ite; ite =
xine_list_next(this->xine->streams, ite)) {
stream = xine_list_get_value(this->xine->streams, ite);
event.stream = stream;
xine_event_send(stream, &event);
}
pthread_mutex_unlock(&this->xine->streams_lock);
}
static void calc_linear_float_stream_volumes(pa_mix_info streams[], unsigned nstreams, const pa_cvolume *volume, const pa_sample_spec *spec) {
unsigned k, channel;
float linear[PA_CHANNELS_MAX + VOLUME_PADDING];
pa_assert(streams);
pa_assert(spec);
pa_assert(volume);
calc_linear_float_volume(linear, volume);
for (k = 0; k < nstreams; k++) {
for (channel = 0; channel < spec->channels; channel++) {
pa_mix_info *m = streams + k;
m->linear[channel].f = (float) (pa_sw_volume_to_linear(m->volume.values[channel]) * linear[channel]);
}
}
}
static void
gst_pulsesrc_source_output_info_cb (pa_context * c,
const pa_source_output_info * i, int eol, void *userdata)
{
GstPulseSrc *psrc;
psrc = GST_PULSESRC_CAST (userdata);
if (!i)
goto done;
/* If the index doesn't match our current stream,
* it implies we just recreated the stream (caps change)
*/
if (i->index == psrc->source_output_idx) {
psrc->volume = pa_sw_volume_to_linear (pa_cvolume_max (&i->volume));
psrc->mute = i->mute;
}
done:
pa_threaded_mainloop_signal (psrc->mainloop, 0);
}
pa_volume_t pa_sw_volume_multiply(pa_volume_t a, pa_volume_t b) {
return pa_sw_volume_from_linear(pa_sw_volume_to_linear(a)* pa_sw_volume_to_linear(b));
}
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;
}