#include <stdio.h>
#include <string.h>
+#include <pulse/i18n.h>
#include <pulsecore/core-util.h>
#include <pulsecore/macro.h>
pa_assert(a);
pa_assert(b);
+ pa_return_val_if_fail(pa_cvolume_valid(a), 0);
+ pa_return_val_if_fail(pa_cvolume_valid(b), 0);
+
if (a->channels != b->channels)
return 0;
return 1;
}
+pa_cvolume* pa_cvolume_init(pa_cvolume *a) {
+ unsigned c;
+
+ pa_assert(a);
+
+ a->channels = 0;
+
+ for (c = 0; c < PA_CHANNELS_MAX; c++)
+ a->values[c] = (pa_volume_t) -1;
+
+ return a;
+}
+
pa_cvolume* pa_cvolume_set(pa_cvolume *a, unsigned channels, pa_volume_t v) {
int i;
pa_assert(channels > 0);
pa_assert(channels <= PA_CHANNELS_MAX);
- a->channels = channels;
+ a->channels = (uint8_t) channels;
for (i = 0; i < a->channels; i++)
a->values[i] = v;
pa_volume_t pa_cvolume_avg(const pa_cvolume *a) {
uint64_t sum = 0;
int i;
+
pa_assert(a);
+ pa_return_val_if_fail(pa_cvolume_valid(a), PA_VOLUME_MUTED);
for (i = 0; i < a->channels; i++)
sum += a->values[i];
return (pa_volume_t) sum;
}
+pa_volume_t pa_cvolume_max(const pa_cvolume *a) {
+ pa_volume_t m = 0;
+ int i;
+
+ pa_assert(a);
+ pa_return_val_if_fail(pa_cvolume_valid(a), PA_VOLUME_MUTED);
+
+ for (i = 0; i < a->channels; i++)
+ if (a->values[i] > m)
+ m = a->values[i];
+
+ return m;
+}
+
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));
+ return pa_sw_volume_from_linear(pa_sw_volume_to_linear(a) * pa_sw_volume_to_linear(b));
+}
+
+pa_volume_t pa_sw_volume_divide(pa_volume_t a, pa_volume_t b) {
+ double v = pa_sw_volume_to_linear(b);
+
+ if (v <= 0)
+ return 0;
+
+ return pa_sw_volume_from_linear(pa_sw_volume_to_linear(a) / v);
}
#define USER_DECIBEL_RANGE 60
if (isinf(dB) < 0 || dB <= -USER_DECIBEL_RANGE)
return PA_VOLUME_MUTED;
- return (pa_volume_t) ((dB/USER_DECIBEL_RANGE+1)*PA_VOLUME_NORM);
+ return (pa_volume_t) lrint((dB/USER_DECIBEL_RANGE+1)*PA_VOLUME_NORM);
}
double pa_sw_volume_to_dB(pa_volume_t v) {
if (v == PA_VOLUME_MUTED)
return 0;
- return pow(10, pa_sw_volume_to_dB(v)/20);
+ return pow(10.0, pa_sw_volume_to_dB(v)/20.0);
}
char *pa_cvolume_snprint(char *s, size_t l, const pa_cvolume *c) {
unsigned channel;
- int first = 1;
+ pa_bool_t first = TRUE;
char *e;
pa_assert(s);
pa_assert(l > 0);
pa_assert(c);
+ pa_init_i18n();
+
+ if (!pa_cvolume_valid(c)) {
+ pa_snprintf(s, l, _("(invalid)"));
+ return s;
+ }
+
*(e = s) = 0;
for (channel = 0; channel < c->channels && l > 1; channel++) {
(c->values[channel]*100)/PA_VOLUME_NORM);
e = strchr(e, 0);
- first = 0;
+ first = FALSE;
+ }
+
+ return s;
+}
+
+char *pa_volume_snprint(char *s, size_t l, pa_volume_t v) {
+ pa_assert(s);
+ pa_assert(l > 0);
+
+ pa_init_i18n();
+
+ if (v == (pa_volume_t) -1) {
+ pa_snprintf(s, l, _("(invalid)"));
+ return s;
+ }
+
+ pa_snprintf(s, l, "%3u%%", (v*100)/PA_VOLUME_NORM);
+ return s;
+}
+
+char *pa_sw_cvolume_snprint_dB(char *s, size_t l, const pa_cvolume *c) {
+ unsigned channel;
+ pa_bool_t first = TRUE;
+ char *e;
+
+ pa_assert(s);
+ pa_assert(l > 0);
+ pa_assert(c);
+
+ pa_init_i18n();
+
+ if (!pa_cvolume_valid(c)) {
+ pa_snprintf(s, l, _("(invalid)"));
+ return s;
+ }
+
+ *(e = s) = 0;
+
+ for (channel = 0; channel < c->channels && l > 1; channel++) {
+ double f = pa_sw_volume_to_dB(c->values[channel]);
+
+ l -= pa_snprintf(e, l, "%s%u: %0.2f dB",
+ first ? "" : " ",
+ channel,
+ isinf(f) < 0 || f <= -USER_DECIBEL_RANGE ? -INFINITY : f);
+
+ e = strchr(e, 0);
+ first = FALSE;
}
return s;
}
-/** Return non-zero if the volume of all channels is equal to the specified value */
+char *pa_sw_volume_snprint_dB(char *s, size_t l, pa_volume_t v) {
+ double f;
+
+ pa_assert(s);
+ pa_assert(l > 0);
+
+ pa_init_i18n();
+
+ if (v == (pa_volume_t) -1) {
+ pa_snprintf(s, l, _("(invalid)"));
+ return s;
+ }
+
+ f = pa_sw_volume_to_dB(v);
+ pa_snprintf(s, l, "%0.2f dB",
+ isinf(f) < 0 || f <= -USER_DECIBEL_RANGE ? -INFINITY : f);
+
+ return s;
+}
+
int pa_cvolume_channels_equal_to(const pa_cvolume *a, pa_volume_t v) {
unsigned c;
pa_assert(a);
+ pa_return_val_if_fail(pa_cvolume_valid(a), 0);
+
for (c = 0; c < a->channels; c++)
if (a->values[c] != v)
return 0;
pa_assert(a);
pa_assert(b);
- for (i = 0; i < a->channels && i < b->channels && i < PA_CHANNELS_MAX; i++) {
+ pa_return_val_if_fail(pa_cvolume_valid(a), NULL);
+ pa_return_val_if_fail(pa_cvolume_valid(b), NULL);
- dest->values[i] = pa_sw_volume_multiply(
- i < a->channels ? a->values[i] : PA_VOLUME_NORM,
- i < b->channels ? b->values[i] : PA_VOLUME_NORM);
- }
+ for (i = 0; i < a->channels && i < b->channels && i < PA_CHANNELS_MAX; i++)
+ dest->values[i] = pa_sw_volume_multiply(a->values[i], b->values[i]);
+
+ dest->channels = (uint8_t) i;
+
+ return dest;
+}
- dest->channels = i;
+pa_cvolume *pa_sw_cvolume_divide(pa_cvolume *dest, const pa_cvolume *a, const pa_cvolume *b) {
+ unsigned i;
+
+ pa_assert(dest);
+ pa_assert(a);
+ pa_assert(b);
+
+ pa_return_val_if_fail(pa_cvolume_valid(a), NULL);
+ pa_return_val_if_fail(pa_cvolume_valid(b), NULL);
+
+ for (i = 0; i < a->channels && i < b->channels && i < PA_CHANNELS_MAX; i++)
+ dest->values[i] = pa_sw_volume_divide(a->values[i], b->values[i]);
+
+ dest->channels = (uint8_t) i;
return dest;
}
int pa_cvolume_valid(const pa_cvolume *v) {
+ unsigned c;
+
pa_assert(v);
if (v->channels <= 0 || v->channels > PA_CHANNELS_MAX)
return 0;
+ for (c = 0; c < v->channels; c++)
+ if (v->values[c] == (pa_volume_t) -1)
+ return 0;
+
return 1;
}
}
static pa_bool_t on_lfe(pa_channel_position_t p) {
+
return
p == PA_CHANNEL_POSITION_LFE;
}
-pa_cvolume *pa_cvolume_remap(pa_cvolume *v, pa_channel_map *from, pa_channel_map *to) {
+static pa_bool_t on_front(pa_channel_position_t p) {
+
+ return
+ p == PA_CHANNEL_POSITION_FRONT_LEFT ||
+ p == PA_CHANNEL_POSITION_FRONT_RIGHT ||
+ p == PA_CHANNEL_POSITION_FRONT_CENTER ||
+ p == PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER ||
+ p == PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER ||
+ p == PA_CHANNEL_POSITION_TOP_FRONT_LEFT ||
+ p == PA_CHANNEL_POSITION_TOP_FRONT_RIGHT ||
+ p == PA_CHANNEL_POSITION_TOP_FRONT_CENTER;
+}
+
+static pa_bool_t on_rear(pa_channel_position_t p) {
+
+ return
+ p == PA_CHANNEL_POSITION_REAR_LEFT ||
+ p == PA_CHANNEL_POSITION_REAR_RIGHT ||
+ p == PA_CHANNEL_POSITION_REAR_CENTER ||
+ p == PA_CHANNEL_POSITION_TOP_REAR_LEFT ||
+ p == PA_CHANNEL_POSITION_TOP_REAR_RIGHT ||
+ p == PA_CHANNEL_POSITION_TOP_REAR_CENTER;
+}
+
+pa_cvolume *pa_cvolume_remap(pa_cvolume *v, const pa_channel_map *from, const pa_channel_map *to) {
int a, b;
pa_cvolume result;
pa_assert(v);
pa_assert(from);
pa_assert(to);
- pa_assert(v->channels == from->channels);
+
+ pa_return_val_if_fail(pa_cvolume_valid(v), NULL);
+ pa_return_val_if_fail(pa_channel_map_valid(from), NULL);
+ pa_return_val_if_fail(pa_channel_map_valid(to), NULL);
+ pa_return_val_if_fail(pa_cvolume_compatible_with_channel_map(v, from), NULL);
if (pa_channel_map_equal(from, to))
return v;
*v = result;
return v;
}
+
+int pa_cvolume_compatible(const pa_cvolume *v, const pa_sample_spec *ss) {
+
+ pa_assert(v);
+ pa_assert(ss);
+
+ pa_return_val_if_fail(pa_cvolume_valid(v), 0);
+ pa_return_val_if_fail(pa_sample_spec_valid(ss), 0);
+
+ return v->channels == ss->channels;
+}
+
+int pa_cvolume_compatible_with_channel_map(const pa_cvolume *v, const pa_channel_map *cm) {
+ pa_assert(v);
+ pa_assert(cm);
+
+ pa_return_val_if_fail(pa_cvolume_valid(v), 0);
+ pa_return_val_if_fail(pa_channel_map_valid(cm), 0);
+
+ return v->channels == cm->channels;
+}
+
+static void get_avg_lr(const pa_channel_map *map, const pa_cvolume *v, pa_volume_t *l, pa_volume_t *r) {
+ int c;
+ pa_volume_t left = 0, right = 0;
+ unsigned n_left = 0, n_right = 0;
+
+ pa_assert(v);
+ pa_assert(map);
+ pa_assert(map->channels == v->channels);
+ pa_assert(l);
+ pa_assert(r);
+
+ for (c = 0; c < map->channels; c++) {
+ if (on_left(map->map[c])) {
+ left += v->values[c];
+ n_left++;
+ } else if (on_right(map->map[c])) {
+ right += v->values[c];
+ n_right++;
+ }
+ }
+
+ if (n_left <= 0)
+ *l = PA_VOLUME_NORM;
+ else
+ *l = left / n_left;
+
+ if (n_right <= 0)
+ *r = PA_VOLUME_NORM;
+ else
+ *r = right / n_right;
+}
+
+float pa_cvolume_get_balance(const pa_cvolume *v, const pa_channel_map *map) {
+ pa_volume_t left, right;
+
+ pa_assert(v);
+ pa_assert(map);
+
+ pa_return_val_if_fail(pa_cvolume_valid(v), 0.0f);
+ pa_return_val_if_fail(pa_channel_map_valid(map), 0.0f);
+ pa_return_val_if_fail(pa_cvolume_compatible_with_channel_map(v, map), 0.0f);
+
+ if (!pa_channel_map_can_balance(map))
+ return 0.0f;
+
+ get_avg_lr(map, v, &left, &right);
+
+ if (left == right)
+ return 0.0f;
+
+ /* 1.0, 0.0 => -1.0
+ 0.0, 1.0 => 1.0
+ 0.0, 0.0 => 0.0
+ 0.5, 0.5 => 0.0
+ 1.0, 0.5 => -0.5
+ 1.0, 0.25 => -0.75
+ 0.75, 0.25 => -0.66
+ 0.5, 0.25 => -0.5 */
+
+ if (left > right)
+ return -1.0f + ((float) right / (float) left);
+ else
+ return 1.0f - ((float) left / (float) right);
+}
+
+pa_cvolume* pa_cvolume_set_balance(pa_cvolume *v, const pa_channel_map *map, float new_balance) {
+ pa_volume_t left, nleft, right, nright, m;
+ unsigned c;
+
+ pa_assert(map);
+ pa_assert(v);
+ pa_assert(new_balance >= -1.0f);
+ pa_assert(new_balance <= 1.0f);
+
+ pa_return_val_if_fail(pa_cvolume_valid(v), NULL);
+ pa_return_val_if_fail(pa_channel_map_valid(map), NULL);
+ pa_return_val_if_fail(pa_cvolume_compatible_with_channel_map(v, map), NULL);
+
+ if (!pa_channel_map_can_balance(map))
+ return v;
+
+ get_avg_lr(map, v, &left, &right);
+
+ m = PA_MAX(left, right);
+
+ if (new_balance <= 0) {
+ nright = (new_balance + 1.0f) * m;
+ nleft = m;
+ } else {
+ nleft = (1.0f - new_balance) * m;
+ nright = m;
+ }
+
+ for (c = 0; c < map->channels; c++) {
+ if (on_left(map->map[c])) {
+ if (left == 0)
+ v->values[c] = nleft;
+ else
+ v->values[c] = (pa_volume_t) (((uint64_t) v->values[c] * (uint64_t) nleft) / (uint64_t) left);
+ } else if (on_right(map->map[c])) {
+ if (right == 0)
+ v->values[c] = nright;
+ else
+ v->values[c] = (pa_volume_t) (((uint64_t) v->values[c] * (uint64_t) nright) / (uint64_t) right);
+ }
+ }
+
+ return v;
+}
+
+pa_cvolume* pa_cvolume_scale(pa_cvolume *v, pa_volume_t max) {
+ unsigned c;
+ pa_volume_t t = 0;
+
+ pa_assert(v);
+
+ pa_return_val_if_fail(pa_cvolume_valid(v), NULL);
+ pa_return_val_if_fail(max != (pa_volume_t) -1, NULL);
+
+ for (c = 0; c < v->channels; c++)
+ if (v->values[c] > t)
+ t = v->values[c];
+
+ if (t <= 0)
+ return pa_cvolume_set(v, v->channels, max);
+
+ for (c = 0; c < v->channels; c++)
+ v->values[c] = (pa_volume_t) (((uint64_t) v->values[c] * (uint64_t) max) / (uint64_t) t);
+
+ return v;
+}
+
+static void get_avg_fr(const pa_channel_map *map, const pa_cvolume *v, pa_volume_t *f, pa_volume_t *r) {
+ int c;
+ pa_volume_t front = 0, rear = 0;
+ unsigned n_front = 0, n_rear = 0;
+
+ pa_assert(v);
+ pa_assert(map);
+ pa_assert(map->channels == v->channels);
+ pa_assert(f);
+ pa_assert(r);
+
+ for (c = 0; c < map->channels; c++) {
+ if (on_front(map->map[c])) {
+ front += v->values[c];
+ n_front++;
+ } else if (on_rear(map->map[c])) {
+ rear += v->values[c];
+ n_rear++;
+ }
+ }
+
+ if (n_front <= 0)
+ *f = PA_VOLUME_NORM;
+ else
+ *f = front / n_front;
+
+ if (n_rear <= 0)
+ *r = PA_VOLUME_NORM;
+ else
+ *r = rear / n_rear;
+}
+
+float pa_cvolume_get_fade(const pa_cvolume *v, const pa_channel_map *map) {
+ pa_volume_t front, rear;
+
+ pa_assert(v);
+ pa_assert(map);
+
+ pa_return_val_if_fail(pa_cvolume_valid(v), 0.0f);
+ pa_return_val_if_fail(pa_channel_map_valid(map), 0.0f);
+ pa_return_val_if_fail(pa_cvolume_compatible_with_channel_map(v, map), 0.0f);
+
+ if (!pa_channel_map_can_fade(map))
+ return 0.0f;
+
+ get_avg_fr(map, v, &front, &rear);
+
+ if (front == rear)
+ return 0.0f;
+
+ if (rear > front)
+ return -1.0f + ((float) front / (float) rear);
+ else
+ return 1.0f - ((float) rear / (float) front);
+}
+
+pa_cvolume* pa_cvolume_set_fade(pa_cvolume *v, const pa_channel_map *map, float new_fade) {
+ pa_volume_t front, nfront, rear, nrear, m;
+ unsigned c;
+
+ pa_assert(map);
+ pa_assert(v);
+ pa_assert(new_fade >= -1.0f);
+ pa_assert(new_fade <= 1.0f);
+
+ pa_return_val_if_fail(pa_cvolume_valid(v), NULL);
+ pa_return_val_if_fail(pa_channel_map_valid(map), NULL);
+ pa_return_val_if_fail(pa_cvolume_compatible_with_channel_map(v, map), NULL);
+
+ if (!pa_channel_map_can_fade(map))
+ return v;
+
+ get_avg_fr(map, v, &front, &rear);
+
+ m = PA_MAX(front, rear);
+
+ if (new_fade <= 0) {
+ nfront = (new_fade + 1.0f) * m;
+ nrear = m;
+ } else {
+ nrear = (1.0f - new_fade) * m;
+ nfront = m;
+ }
+
+ for (c = 0; c < map->channels; c++) {
+ if (on_front(map->map[c])) {
+ if (front == 0)
+ v->values[c] = nfront;
+ else
+ v->values[c] = (pa_volume_t) (((uint64_t) v->values[c] * (uint64_t) nfront) / (uint64_t) front);
+ } else if (on_rear(map->map[c])) {
+ if (rear == 0)
+ v->values[c] = nrear;
+ else
+ v->values[c] = (pa_volume_t) (((uint64_t) v->values[c] * (uint64_t) nrear) / (uint64_t) rear);
+ }
+ }
+
+ return v;
+}