char* pa_channel_map_snprint(char *s, size_t l, const pa_channel_map *map) {
unsigned channel;
pa_bool_t first = TRUE;
char *e;
pa_assert(s);
pa_assert(l > 0);
pa_assert(map);
pa_init_i18n();
if (!pa_channel_map_valid(map)) {
pa_snprintf(s, l, _("(invalid)"));
return s;
}
*(e = s) = 0;
for (channel = 0; channel < map->channels && l > 1; channel++) {
l -= pa_snprintf(e, l, "%s%s",
first ? "" : ",",
pa_channel_position_to_string(map->map[channel]));
e = strchr(e, 0);
first = FALSE;
}
return s;
}
pa_channel_map *
gst_pulse_gst_to_channel_map (pa_channel_map * map,
const GstRingBufferSpec * spec)
{
int i;
GstAudioChannelPosition *pos;
pa_channel_map_init (map);
if (!(pos =
gst_audio_get_channel_positions (gst_caps_get_structure (spec->caps,
0)))) {
return NULL;
}
for (i = 0; i < spec->channels; i++) {
if (pos[i] == GST_AUDIO_CHANNEL_POSITION_NONE) {
/* no valid mappings for these channels */
g_free (pos);
return NULL;
} else if (pos[i] < GST_AUDIO_CHANNEL_POSITION_NUM)
map->map[i] = gst_pos_to_pa[pos[i]];
else
map->map[i] = PA_CHANNEL_POSITION_INVALID;
}
g_free (pos);
map->channels = spec->channels;
if (!pa_channel_map_valid (map)) {
return NULL;
}
return map;
}
int pa_scache_add_item(
pa_core *c,
const char *name,
const pa_sample_spec *ss,
const pa_channel_map *map,
const pa_memchunk *chunk,
pa_proplist *p,
uint32_t *idx) {
pa_scache_entry *e;
char st[PA_SAMPLE_SPEC_SNPRINT_MAX];
pa_channel_map tmap;
pa_assert(c);
pa_assert(name);
pa_assert(!ss || pa_sample_spec_valid(ss));
pa_assert(!map || (pa_channel_map_valid(map) && ss && pa_channel_map_compatible(map, ss)));
if (ss && !map) {
pa_channel_map_init_extend(&tmap, ss->channels, PA_CHANNEL_MAP_DEFAULT);
map = &tmap;
}
if (chunk && chunk->length > PA_SCACHE_ENTRY_SIZE_MAX)
return -1;
if (!(e = scache_add_item(c, name)))
return -1;
pa_sample_spec_init(&e->sample_spec);
pa_channel_map_init(&e->channel_map);
pa_cvolume_init(&e->volume);
e->volume_is_set = FALSE;
if (ss) {
e->sample_spec = *ss;
pa_cvolume_reset(&e->volume, ss->channels);
}
if (map)
e->channel_map = *map;
if (chunk) {
e->memchunk = *chunk;
pa_memblock_ref(e->memchunk.memblock);
}
if (p)
pa_proplist_update(e->proplist, PA_UPDATE_REPLACE, p);
if (idx)
*idx = e->index;
pa_log_debug("Created sample \"%s\" (#%d), %lu bytes with sample spec %s",
name, e->index, (unsigned long) e->memchunk.length,
pa_sample_spec_snprint(st, sizeof(st), &e->sample_spec));
return 0;
}
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;
}
int pa_channel_map_superset(const pa_channel_map *a, const pa_channel_map *b) {
pa_channel_position_mask_t am, bm;
pa_assert(a);
pa_assert(b);
pa_return_val_if_fail(pa_channel_map_valid(a), 0);
if (PA_UNLIKELY(a == b))
return 1;
pa_return_val_if_fail(pa_channel_map_valid(b), 0);
am = pa_channel_map_mask(a);
bm = pa_channel_map_mask(b);
return (bm & am) == bm;
}
int pa_channel_map_compatible(const pa_channel_map *map, const pa_sample_spec *ss) {
pa_assert(map);
pa_assert(ss);
pa_return_val_if_fail(pa_channel_map_valid(map), 0);
pa_return_val_if_fail(pa_sample_spec_valid(ss), 0);
return map->channels == ss->channels;
}
const char *
gvc_channel_map_get_mapping (const GvcChannelMap *map)
{
g_return_val_if_fail (GVC_IS_CHANNEL_MAP (map), NULL);
if (!pa_channel_map_valid(&map->priv->pa_map))
return NULL;
return pa_channel_map_to_pretty_name (&map->priv->pa_map);
}
const pa_cvolume *
gvc_channel_map_get_cvolume (const GvcChannelMap *map)
{
g_return_val_if_fail (GVC_IS_CHANNEL_MAP (map), NULL);
if (!pa_channel_map_valid(&map->priv->pa_map))
return NULL;
return &map->priv->pa_volume;
}
guint
gvc_channel_map_get_num_channels (const GvcChannelMap *map)
{
g_return_val_if_fail (GVC_IS_CHANNEL_MAP (map), 0);
if (!pa_channel_map_valid(&map->priv->pa_map))
return 0;
return map->priv->pa_map.channels;
}
const char* pa_channel_map_to_pretty_name(const pa_channel_map *map) {
pa_bitset_t in_map[PA_BITSET_ELEMENTS(PA_CHANNEL_POSITION_MAX)];
unsigned c;
pa_assert(map);
pa_return_val_if_fail(pa_channel_map_valid(map), NULL);
memset(in_map, 0, sizeof(in_map));
for (c = 0; c < map->channels; c++)
pa_bitset_set(in_map, map->map[c], TRUE);
pa_init_i18n();
if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
PA_CHANNEL_POSITION_MONO, -1))
return _("Mono");
if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, -1))
return _("Stereo");
if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, -1))
return _("Surround 4.0");
if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
PA_CHANNEL_POSITION_LFE, -1))
return _("Surround 4.1");
if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
PA_CHANNEL_POSITION_FRONT_CENTER, -1))
return _("Surround 5.0");
if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE, -1))
return _("Surround 5.1");
if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE,
PA_CHANNEL_POSITION_SIDE_LEFT, PA_CHANNEL_POSITION_SIDE_RIGHT, -1))
return _("Surround 7.1");
return NULL;
}
pa_channel_position_mask_t pa_channel_map_mask(const pa_channel_map *map) {
unsigned c;
pa_channel_position_mask_t r = 0;
pa_return_val_if_fail(pa_channel_map_valid(map), 0);
for (c = 0; c < map->channels; c++)
r |= PA_CHANNEL_POSITION_MASK(map->map[c]);
return r;
}
static void
set_from_pa_map (GvcChannelMap *map,
const pa_channel_map *pa_map)
{
g_assert (pa_channel_map_valid(pa_map));
map->priv->can_balance = pa_channel_map_can_balance (pa_map);
map->priv->can_fade = pa_channel_map_can_fade (pa_map);
map->priv->pa_map = *pa_map;
pa_cvolume_set(&map->priv->pa_volume, pa_map->channels, PA_VOLUME_NORM);
}
int pa_channel_map_has_position(const pa_channel_map *map, pa_channel_position_t p) {
unsigned c;
pa_return_val_if_fail(pa_channel_map_valid(map), 0);
pa_return_val_if_fail(p < PA_CHANNEL_POSITION_MAX, 0);
for (c = 0; c < map->channels; c++)
if (map->map[c] == p)
return 1;
return 0;
}
const char* pa_channel_map_to_name(const pa_channel_map *map) {
pa_bitset_t in_map[PA_BITSET_ELEMENTS(PA_CHANNEL_POSITION_MAX)];
unsigned c;
pa_assert(map);
pa_return_val_if_fail(pa_channel_map_valid(map), NULL);
memset(in_map, 0, sizeof(in_map));
for (c = 0; c < map->channels; c++)
pa_bitset_set(in_map, map->map[c], TRUE);
if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
PA_CHANNEL_POSITION_MONO, -1))
return "mono";
if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, -1))
return "stereo";
if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, -1))
return "surround-40";
if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
PA_CHANNEL_POSITION_LFE, -1))
return "surround-41";
if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
PA_CHANNEL_POSITION_FRONT_CENTER, -1))
return "surround-50";
if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE, -1))
return "surround-51";
if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE,
PA_CHANNEL_POSITION_SIDE_LEFT, PA_CHANNEL_POSITION_SIDE_RIGHT, -1))
return "surround-71";
return NULL;
}
int pa_channel_map_can_fade(const pa_channel_map *map) {
pa_channel_position_mask_t m;
pa_assert(map);
pa_return_val_if_fail(pa_channel_map_valid(map), 0);
m = pa_channel_map_mask(map);
return
(PA_CHANNEL_POSITION_MASK_FRONT & m) &&
(PA_CHANNEL_POSITION_MASK_REAR & m);
}
int pa_channel_map_equal(const pa_channel_map *a, const pa_channel_map *b) {
unsigned c;
pa_assert(a);
pa_assert(b);
pa_return_val_if_fail(pa_channel_map_valid(a), 0);
if (PA_UNLIKELY(a == b))
return 1;
pa_return_val_if_fail(pa_channel_map_valid(b), 0);
if (a->channels != b->channels)
return 0;
for (c = 0; c < a->channels; c++)
if (a->map[c] != b->map[c])
return 0;
return 1;
}
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_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;
result.channels = to->channels;
for (b = 0; b < to->channels; b++) {
pa_volume_t k = 0;
int n = 0;
for (a = 0; a < from->channels; a++)
if (from->map[a] == to->map[b]) {
k += v->values[a];
n ++;
}
if (n <= 0) {
for (a = 0; a < from->channels; a++)
if ((on_left(from->map[a]) && on_left(to->map[b])) ||
(on_right(from->map[a]) && on_right(to->map[b])) ||
(on_center(from->map[a]) && on_center(to->map[b])) ||
(on_lfe(from->map[a]) && on_lfe(to->map[b]))) {
k += v->values[a];
n ++;
}
}
if (n <= 0)
k = pa_cvolume_avg(v);
else
k /= n;
result.values[b] = k;
}
*v = result;
return v;
}
static struct entry* read_entry(struct userdata *u, const char *name) {
pa_datum key, data;
struct entry *e;
pa_assert(u);
pa_assert(name);
key.data = (char*) name;
key.size = strlen(name);
pa_zero(data);
if (!pa_database_get(u->database, &key, &data))
goto fail;
if (data.size != sizeof(struct entry)) {
pa_log_debug("Database contains entry for device %s of wrong size %lu != %lu. Probably due to upgrade, ignoring.", name, (unsigned long) data.size, (unsigned long) sizeof(struct entry));
goto fail;
}
e = (struct entry*) data.data;
if (e->version != ENTRY_VERSION) {
pa_log_debug("Version of database entry for device %s doesn't match our version. Probably due to upgrade, ignoring.", name);
goto fail;
}
if (!memchr(e->port, 0, sizeof(e->port))) {
pa_log_warn("Database contains entry for device %s with missing NUL byte in port name", name);
goto fail;
}
if (e->volume_valid && !pa_channel_map_valid(&e->channel_map)) {
pa_log_warn("Invalid channel map stored in database for device %s", name);
goto fail;
}
if (e->volume_valid && (!pa_cvolume_valid(&e->volume) || !pa_cvolume_compatible_with_channel_map(&e->volume, &e->channel_map))) {
pa_log_warn("Volume and channel map don't match in database entry for device %s", name);
goto fail;
}
return e;
fail:
pa_datum_free(&data);
return NULL;
}
AudioStream::AudioStream(pa_context *c, pa_threaded_mainloop *m, const char *desc, int type, int smplrate, std::string& deviceName)
: audiostream_(0), mainloop_(m)
{
static const pa_channel_map channel_map = {
1,
{ PA_CHANNEL_POSITION_MONO },
};
pa_sample_spec sample_spec = {
PA_SAMPLE_S16LE, // PA_SAMPLE_FLOAT32LE,
smplrate,
1
};
assert(pa_sample_spec_valid(&sample_spec));
assert(pa_channel_map_valid(&channel_map));
audiostream_ = pa_stream_new(c, desc, &sample_spec, &channel_map);
if (!audiostream_) {
ERROR("%s: pa_stream_new() failed : %s" , desc, pa_strerror(pa_context_errno(c)));
throw std::runtime_error("Could not create stream\n");
}
pa_buffer_attr attributes;
attributes.maxlength = pa_usec_to_bytes(160 * PA_USEC_PER_MSEC, &sample_spec);
attributes.tlength = pa_usec_to_bytes(80 * PA_USEC_PER_MSEC, &sample_spec);
attributes.prebuf = 0;
attributes.fragsize = pa_usec_to_bytes(80 * PA_USEC_PER_MSEC, &sample_spec);
attributes.minreq = (uint32_t) -1;
pa_threaded_mainloop_lock(mainloop_);
if (type == PLAYBACK_STREAM || type == RINGTONE_STREAM)
pa_stream_connect_playback(audiostream_, deviceName == "" ? NULL : deviceName.c_str(), &attributes,
(pa_stream_flags_t)(PA_STREAM_ADJUST_LATENCY|PA_STREAM_AUTO_TIMING_UPDATE), NULL, NULL);
else if (type == CAPTURE_STREAM)
pa_stream_connect_record(audiostream_, deviceName == "" ? NULL : deviceName.c_str(), &attributes,
(pa_stream_flags_t)(PA_STREAM_ADJUST_LATENCY|PA_STREAM_AUTO_TIMING_UPDATE));
pa_threaded_mainloop_unlock(mainloop_);
pa_stream_set_state_callback(audiostream_, stream_state_callback, NULL);
}
char *pa_cvolume_snprint_verbose(char *s, size_t l, const pa_cvolume *c, const pa_channel_map *map, int print_dB) {
char *current = s;
bool first = true;
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;
}
pa_assert(!map || (map->channels == c->channels));
pa_assert(!map || pa_channel_map_valid(map));
current[0] = 0;
for (unsigned channel = 0; channel < c->channels && l > 1; channel++) {
char channel_position[32];
size_t bytes_printed;
char buf[PA_VOLUME_SNPRINT_VERBOSE_MAX];
if (map)
pa_snprintf(channel_position, sizeof(channel_position), "%s", pa_channel_position_to_string(map->map[channel]));
else
pa_snprintf(channel_position, sizeof(channel_position), "%u", channel);
bytes_printed = pa_snprintf(current, l, "%s%s: %s",
first ? "" : ", ",
channel_position,
pa_volume_snprint_verbose(buf, sizeof(buf), c->values[channel], print_dB));
l -= bytes_printed;
current += bytes_printed;
first = false;
}
return s;
}
pa_format_info* pa_format_info_from_sample_spec(pa_sample_spec *ss, pa_channel_map *map) {
char cm[PA_CHANNEL_MAP_SNPRINT_MAX];
pa_format_info *f;
pa_assert(ss && pa_sample_spec_valid(ss));
pa_assert(!map || pa_channel_map_valid(map));
f = pa_format_info_new();
f->encoding = PA_ENCODING_PCM;
pa_format_info_set_sample_format(f, ss->format);
pa_format_info_set_rate(f, ss->rate);
pa_format_info_set_channels(f, ss->channels);
if (map) {
pa_channel_map_snprint(cm, sizeof(cm), map);
pa_format_info_set_prop_string(f, PA_PROP_FORMAT_CHANNEL_MAP, cm);
}
return f;
}
APULSE_EXPORT
char *
pa_channel_map_snprint(char *s, size_t l, const pa_channel_map *map)
{
trace_info("F %s s=%p, l=%d, map=%p\n", __func__, s, (int)l, map);
char *ptr = s;
if (!pa_channel_map_valid(map)) {
snprintf(s, l, "(invalid)");
return s;
}
for (int c = 0; c < map->channels && l > 1; c ++) {
int adv = snprintf(ptr, l, "%s%s", (c == 0) ? "" : ",",
pa_channel_position_to_string(map->map[c]));
ptr += adv;
l -= adv;
}
return s;
}
const gdouble *
gvc_channel_map_get_volume (GvcChannelMap *map)
{
g_return_val_if_fail (GVC_IS_CHANNEL_MAP (map), NULL);
if (!pa_channel_map_valid(&map->priv->pa_map))
return NULL;
map->priv->extern_volume[VOLUME] = (gdouble) pa_cvolume_max (&map->priv->pa_volume);
if (gvc_channel_map_can_balance (map))
map->priv->extern_volume[BALANCE] = (gdouble) pa_cvolume_get_balance (&map->priv->pa_volume, &map->priv->pa_map);
else
map->priv->extern_volume[BALANCE] = 0;
if (gvc_channel_map_can_fade (map))
map->priv->extern_volume[FADE] = (gdouble) pa_cvolume_get_fade (&map->priv->pa_volume, &map->priv->pa_map);
else
map->priv->extern_volume[FADE] = 0;
if (gvc_channel_map_has_lfe (map))
map->priv->extern_volume[LFE] = (gdouble) pa_cvolume_get_position (&map->priv->pa_volume, &map->priv->pa_map, PA_CHANNEL_POSITION_LFE);
else
map->priv->extern_volume[LFE] = 0;
return map->priv->extern_volume;
}
pa_channel_map *
gst_pulse_gst_to_channel_map (pa_channel_map * map,
const GstAudioRingBufferSpec * spec)
{
gint i, j;
gint channels;
const GstAudioChannelPosition *pos;
pa_channel_map_init (map);
channels = GST_AUDIO_INFO_CHANNELS (&spec->info);
pos = spec->info.position;
for (j = 0; j < channels; j++) {
for (i = 0; i < G_N_ELEMENTS (gst_pa_pos_table); i++) {
if (pos[j] == gst_pa_pos_table[i].gst_pos) {
map->map[j] = gst_pa_pos_table[i].pa_pos;
break;
}
}
if (i == G_N_ELEMENTS (gst_pa_pos_table))
return NULL;
}
if (j != spec->info.channels) {
return NULL;
}
map->channels = spec->info.channels;
if (!pa_channel_map_valid (map)) {
return NULL;
}
return map;
}
AudioStream::AudioStream(pa_context *c,
pa_threaded_mainloop *m,
const char *desc,
int type,
unsigned samplrate,
const PaDeviceInfos* infos,
bool ec)
: audiostream_(0), mainloop_(m)
{
const pa_channel_map channel_map = infos->channel_map;
pa_sample_spec sample_spec = {
PA_SAMPLE_S16LE, // PA_SAMPLE_FLOAT32LE,
samplrate,
channel_map.channels
};
RING_DBG("%s: trying to create stream with device %s (%dHz, %d channels)", desc, infos->name.c_str(), samplrate, channel_map.channels);
assert(pa_sample_spec_valid(&sample_spec));
assert(pa_channel_map_valid(&channel_map));
std::unique_ptr<pa_proplist, decltype(pa_proplist_free)&> pl (pa_proplist_new(), pa_proplist_free);
pa_proplist_sets(pl.get(), PA_PROP_FILTER_WANT, "echo-cancel");
audiostream_ = pa_stream_new_with_proplist(c, desc, &sample_spec, &channel_map, ec ? pl.get() : nullptr);
if (!audiostream_) {
RING_ERR("%s: pa_stream_new() failed : %s" , desc, pa_strerror(pa_context_errno(c)));
throw std::runtime_error("Could not create stream\n");
}
pa_buffer_attr attributes;
attributes.maxlength = pa_usec_to_bytes(160 * PA_USEC_PER_MSEC, &sample_spec);
attributes.tlength = pa_usec_to_bytes(80 * PA_USEC_PER_MSEC, &sample_spec);
attributes.prebuf = 0;
attributes.fragsize = pa_usec_to_bytes(80 * PA_USEC_PER_MSEC, &sample_spec);
attributes.minreq = (uint32_t) -1;
{
PulseMainLoopLock lock(mainloop_);
const pa_stream_flags_t flags = static_cast<pa_stream_flags_t>(PA_STREAM_ADJUST_LATENCY | PA_STREAM_AUTO_TIMING_UPDATE);
if (type == PLAYBACK_STREAM || type == RINGTONE_STREAM) {
pa_stream_connect_playback(audiostream_,
infos->name.empty() ? NULL : infos->name.c_str(),
&attributes,
flags,
NULL, NULL);
} else if (type == CAPTURE_STREAM) {
pa_stream_connect_record(audiostream_,
infos->name.empty() ? NULL : infos->name.c_str(),
&attributes,
flags);
}
}
pa_stream_set_state_callback(audiostream_, [](pa_stream* s, void* user_data){
static_cast<AudioStream*>(user_data)->stateChanged(s);
}, this);
pa_stream_set_moved_callback(audiostream_, [](pa_stream* s, void* user_data){
static_cast<AudioStream*>(user_data)->moved(s);
}, this);
}
static int Open(vlc_object_t *obj)
{
demux_t *demux = (demux_t *)obj;
demux_sys_t *sys = malloc(sizeof (*sys));
if (unlikely(sys == NULL))
return VLC_ENOMEM;
sys->context = vlc_pa_connect(obj, &sys->mainloop);
if (sys->context == NULL) {
free(sys);
return VLC_EGENERIC;
}
sys->stream = NULL;
sys->es = NULL;
sys->discontinuity = false;
sys->caching = INT64_C(1000) * var_InheritInteger(obj, "live-caching");
demux->p_sys = sys;
/* Stream parameters */
struct pa_sample_spec ss;
ss.format = PA_SAMPLE_S16NE;
ss.rate = 48000;
ss.channels = 2;
assert(pa_sample_spec_valid(&ss));
struct pa_channel_map map;
map.channels = 2;
map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
assert(pa_channel_map_valid(&map));
const pa_stream_flags_t flags = PA_STREAM_INTERPOLATE_TIMING
| PA_STREAM_AUTO_TIMING_UPDATE
| PA_STREAM_ADJUST_LATENCY
| PA_STREAM_FIX_FORMAT
| PA_STREAM_FIX_RATE
/*| PA_STREAM_FIX_CHANNELS*/;
const char *dev = NULL;
if (demux->psz_location != NULL && demux->psz_location[0] != '\0')
dev = demux->psz_location;
struct pa_buffer_attr attr = {
.maxlength = -1,
.fragsize = pa_usec_to_bytes(sys->caching, &ss) / 2,
};
es_format_t fmt;
/* Create record stream */
pa_stream *s;
pa_operation *op;
pa_threaded_mainloop_lock(sys->mainloop);
s = pa_stream_new(sys->context, "audio stream", &ss, &map);
if (s == NULL)
goto error;
sys->stream = s;
pa_stream_set_state_callback(s, stream_state_cb, sys->mainloop);
pa_stream_set_read_callback(s, stream_read_cb, demux);
pa_stream_set_buffer_attr_callback(s, stream_buffer_attr_cb, demux);
pa_stream_set_moved_callback(s, stream_moved_cb, demux);
pa_stream_set_overflow_callback(s, stream_overflow_cb, demux);
pa_stream_set_started_callback(s, stream_started_cb, demux);
pa_stream_set_suspended_callback(s, stream_suspended_cb, demux);
pa_stream_set_underflow_callback(s, stream_underflow_cb, demux);
if (pa_stream_connect_record(s, dev, &attr, flags) < 0
|| stream_wait(s, sys->mainloop)) {
vlc_pa_error(obj, "cannot connect record stream", sys->context);
goto error;
}
/* The ES should be initialized before stream_read_cb(), but how? */
const struct pa_sample_spec *pss = pa_stream_get_sample_spec(s);
if ((unsigned)pss->format >= sizeof (fourccs) / sizeof (fourccs[0])) {
msg_Err(obj, "unknown PulseAudio sample format %u",
(unsigned)pss->format);
goto error;
}
vlc_fourcc_t format = fourccs[pss->format];
if (format == 0) { /* FIXME: should renegotiate something else */
msg_Err(obj, "unsupported PulseAudio sample format %u",
(unsigned)pss->format);
goto error;
}
es_format_Init(&fmt, AUDIO_ES, format);
fmt.audio.i_physical_channels = fmt.audio.i_original_channels =
AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
fmt.audio.i_channels = ss.channels;
fmt.audio.i_rate = pss->rate;
fmt.audio.i_bitspersample = aout_BitsPerSample(format);
fmt.audio.i_blockalign = fmt.audio.i_bitspersample * ss.channels / 8;
fmt.i_bitrate = fmt.audio.i_bitspersample * ss.channels * pss->rate;
sys->framesize = fmt.audio.i_blockalign;
sys->es = es_out_Add (demux->out, &fmt);
/* Update the buffer attributes according to actual format */
attr.fragsize = pa_usec_to_bytes(sys->caching, pss) / 2;
op = pa_stream_set_buffer_attr(s, &attr, stream_success_cb, sys->mainloop);
if (likely(op != NULL)) {
while (pa_operation_get_state(op) == PA_OPERATION_RUNNING)
pa_threaded_mainloop_wait(sys->mainloop);
pa_operation_unref(op);
}
stream_buffer_attr_cb(s, demux);
pa_threaded_mainloop_unlock(sys->mainloop);
demux->pf_demux = NULL;
demux->pf_control = Control;
return VLC_SUCCESS;
error:
pa_threaded_mainloop_unlock(sys->mainloop);
Close(obj);
return VLC_EGENERIC;
}
static void Close (vlc_object_t *obj)
{
demux_t *demux = (demux_t *)obj;
demux_sys_t *sys = demux->p_sys;
pa_stream *s = sys->stream;
if (likely(s != NULL)) {
pa_threaded_mainloop_lock(sys->mainloop);
pa_stream_disconnect(s);
pa_stream_set_state_callback(s, NULL, NULL);
pa_stream_set_read_callback(s, NULL, NULL);
pa_stream_set_buffer_attr_callback(s, NULL, NULL);
pa_stream_set_moved_callback(s, NULL, NULL);
pa_stream_set_overflow_callback(s, NULL, NULL);
pa_stream_set_started_callback(s, NULL, NULL);
pa_stream_set_suspended_callback(s, NULL, NULL);
pa_stream_set_underflow_callback(s, NULL, NULL);
pa_stream_unref(s);
pa_threaded_mainloop_unlock(sys->mainloop);
}
vlc_pa_disconnect(obj, sys->context, sys->mainloop);
free(sys);
}
/* Called from main context */
int pa_source_output_new(
pa_source_output**_o,
pa_core *core,
pa_source_output_new_data *data) {
pa_source_output *o;
pa_resampler *resampler = NULL;
char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
int r;
char *pt;
pa_assert(_o);
pa_assert(core);
pa_assert(data);
pa_assert_ctl_context();
if (data->client)
pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->client->proplist);
if ((r = pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_NEW], data)) < 0)
return r;
pa_return_val_if_fail(!data->driver || pa_utf8_valid(data->driver), -PA_ERR_INVALID);
if (!data->source) {
data->source = pa_namereg_get(core, NULL, PA_NAMEREG_SOURCE);
data->save_source = FALSE;
}
pa_return_val_if_fail(data->source, -PA_ERR_NOENTITY);
pa_return_val_if_fail(PA_SOURCE_IS_LINKED(pa_source_get_state(data->source)), -PA_ERR_BADSTATE);
pa_return_val_if_fail(!data->direct_on_input || data->direct_on_input->sink == data->source->monitor_of, -PA_ERR_INVALID);
if (!data->sample_spec_is_set)
data->sample_spec = data->source->sample_spec;
pa_return_val_if_fail(pa_sample_spec_valid(&data->sample_spec), -PA_ERR_INVALID);
if (!data->channel_map_is_set) {
if (pa_channel_map_compatible(&data->source->channel_map, &data->sample_spec))
data->channel_map = data->source->channel_map;
else
pa_channel_map_init_extend(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT);
}
pa_return_val_if_fail(pa_channel_map_valid(&data->channel_map), -PA_ERR_INVALID);
pa_return_val_if_fail(pa_channel_map_compatible(&data->channel_map, &data->sample_spec), -PA_ERR_INVALID);
if (data->flags & PA_SOURCE_OUTPUT_FIX_FORMAT)
data->sample_spec.format = data->source->sample_spec.format;
if (data->flags & PA_SOURCE_OUTPUT_FIX_RATE)
data->sample_spec.rate = data->source->sample_spec.rate;
if (data->flags & PA_SOURCE_OUTPUT_FIX_CHANNELS) {
data->sample_spec.channels = data->source->sample_spec.channels;
data->channel_map = data->source->channel_map;
}
pa_assert(pa_sample_spec_valid(&data->sample_spec));
pa_assert(pa_channel_map_valid(&data->channel_map));
if (data->resample_method == PA_RESAMPLER_INVALID)
data->resample_method = core->resample_method;
pa_return_val_if_fail(data->resample_method < PA_RESAMPLER_MAX, -PA_ERR_INVALID);
if ((r = pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_FIXATE], data)) < 0)
return r;
if ((data->flags & PA_SOURCE_OUTPUT_NO_CREATE_ON_SUSPEND) &&
pa_source_get_state(data->source) == PA_SOURCE_SUSPENDED) {
pa_log("Failed to create source output: source is suspended.");
return -PA_ERR_BADSTATE;
}
if (pa_idxset_size(data->source->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
pa_log("Failed to create source output: too many outputs per source.");
return -PA_ERR_TOOLARGE;
}
if ((data->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ||
!pa_sample_spec_equal(&data->sample_spec, &data->source->sample_spec) ||
!pa_channel_map_equal(&data->channel_map, &data->source->channel_map)) {
if (!(resampler = pa_resampler_new(
core->mempool,
&data->source->sample_spec, &data->source->channel_map,
&data->sample_spec, &data->channel_map,
data->resample_method,
((data->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
((data->flags & PA_SOURCE_OUTPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
(core->disable_remixing || (data->flags & PA_SOURCE_OUTPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0) |
(core->disable_lfe_remixing ? PA_RESAMPLER_NO_LFE : 0)))) {
pa_log_warn("Unsupported resampling operation.");
return -PA_ERR_NOTSUPPORTED;
}
}
o = pa_msgobject_new(pa_source_output);
o->parent.parent.free = source_output_free;
o->parent.process_msg = pa_source_output_process_msg;
o->core = core;
o->state = PA_SOURCE_OUTPUT_INIT;
o->flags = data->flags;
o->proplist = pa_proplist_copy(data->proplist);
o->driver = pa_xstrdup(pa_path_get_filename(data->driver));
o->module = data->module;
o->source = data->source;
o->destination_source = data->destination_source;
o->client = data->client;
o->actual_resample_method = resampler ? pa_resampler_get_method(resampler) : PA_RESAMPLER_INVALID;
o->requested_resample_method = data->resample_method;
o->sample_spec = data->sample_spec;
o->channel_map = data->channel_map;
o->direct_on_input = data->direct_on_input;
o->save_source = data->save_source;
reset_callbacks(o);
o->userdata = NULL;
o->thread_info.state = o->state;
o->thread_info.attached = FALSE;
o->thread_info.sample_spec = o->sample_spec;
o->thread_info.resampler = resampler;
o->thread_info.requested_source_latency = (pa_usec_t) -1;
o->thread_info.direct_on_input = o->direct_on_input;
o->thread_info.delay_memblockq = pa_memblockq_new(
0,
MEMBLOCKQ_MAXLENGTH,
0,
pa_frame_size(&o->source->sample_spec),
0,
1,
0,
&o->source->silence);
pa_assert_se(pa_idxset_put(core->source_outputs, o, &o->index) == 0);
pa_assert_se(pa_idxset_put(o->source->outputs, pa_source_output_ref(o), NULL) == 0);
if (o->client)
pa_assert_se(pa_idxset_put(o->client->source_outputs, o, NULL) >= 0);
if (o->direct_on_input)
pa_assert_se(pa_idxset_put(o->direct_on_input->direct_outputs, o, NULL) == 0);
pt = pa_proplist_to_string_sep(o->proplist, "\n ");
pa_log_info("Created output %u \"%s\" on %s with sample spec %s and channel map %s\n %s",
o->index,
pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_MEDIA_NAME)),
o->source->name,
pa_sample_spec_snprint(st, sizeof(st), &o->sample_spec),
pa_channel_map_snprint(cm, sizeof(cm), &o->channel_map),
pt);
pa_xfree(pt);
/* Don't forget to call pa_source_output_put! */
*_o = o;
return 0;
}
static void resolver_cb(
AvahiServiceResolver *r,
AvahiIfIndex interface, AvahiProtocol protocol,
AvahiResolverEvent event,
const char *name, const char *type, const char *domain,
const char *host_name, const AvahiAddress *a, uint16_t port,
AvahiStringList *txt,
AvahiLookupResultFlags flags,
void *userdata) {
struct userdata *u = userdata;
struct tunnel *tnl;
pa_assert(u);
tnl = tunnel_new(interface, protocol, name, type, domain);
if (event != AVAHI_RESOLVER_FOUND)
pa_log("Resolving of '%s' failed: %s", name, avahi_strerror(avahi_client_errno(u->client)));
else {
char *device = NULL, *dname, *module_name, *args;
const char *t;
char at[AVAHI_ADDRESS_STR_MAX], cmt[PA_CHANNEL_MAP_SNPRINT_MAX];
pa_sample_spec ss;
pa_channel_map cm;
AvahiStringList *l;
pa_bool_t channel_map_set = FALSE;
pa_module *m;
ss = u->core->default_sample_spec;
cm = u->core->default_channel_map;
for (l = txt; l; l = l->next) {
char *key, *value;
pa_assert_se(avahi_string_list_get_pair(l, &key, &value, NULL) == 0);
if (pa_streq(key, "device")) {
pa_xfree(device);
device = value;
value = NULL;
} else if (pa_streq(key, "rate"))
ss.rate = (uint32_t) atoi(value);
else if (pa_streq(key, "channels"))
ss.channels = (uint8_t) atoi(value);
else if (pa_streq(key, "format"))
ss.format = pa_parse_sample_format(value);
else if (pa_streq(key, "channel_map")) {
pa_channel_map_parse(&cm, value);
channel_map_set = TRUE;
}
avahi_free(key);
avahi_free(value);
}
if (!channel_map_set && cm.channels != ss.channels)
pa_channel_map_init_extend(&cm, ss.channels, PA_CHANNEL_MAP_DEFAULT);
if (!pa_sample_spec_valid(&ss)) {
pa_log("Service '%s' contains an invalid sample specification.", name);
avahi_free(device);
goto finish;
}
if (!pa_channel_map_valid(&cm) || cm.channels != ss.channels) {
pa_log("Service '%s' contains an invalid channel map.", name);
avahi_free(device);
goto finish;
}
if (device)
dname = pa_sprintf_malloc("tunnel.%s.%s", host_name, device);
else
dname = pa_sprintf_malloc("tunnel.%s", host_name);
if (!pa_namereg_is_valid_name(dname)) {
pa_log("Cannot construct valid device name from credentials of service '%s'.", dname);
avahi_free(device);
pa_xfree(dname);
goto finish;
}
t = strstr(type, "sink") ? "sink" : "source";
module_name = pa_sprintf_malloc("module-tunnel-%s", t);
args = pa_sprintf_malloc("server=[%s]:%u "
"%s=%s "
"format=%s "
"channels=%u "
"rate=%u "
"%s_name=%s "
"channel_map=%s",
avahi_address_snprint(at, sizeof(at), a), port,
t, device,
pa_sample_format_to_string(ss.format),
ss.channels,
ss.rate,
t, dname,
pa_channel_map_snprint(cmt, sizeof(cmt), &cm));
pa_log_debug("Loading %s with arguments '%s'", module_name, args);
if ((m = pa_module_load(u->core, module_name, args))) {
tnl->module_index = m->index;
pa_hashmap_put(u->tunnels, tnl, tnl);
tnl = NULL;
}
pa_xfree(module_name);
pa_xfree(dname);
pa_xfree(args);
avahi_free(device);
}
finish:
avahi_service_resolver_free(r);
if (tnl)
tunnel_free(tnl);
}
pa_simple* pa_simple_new(
const char *server,
const char *name,
pa_stream_direction_t dir,
const char *dev,
const char *stream_name,
const pa_sample_spec *ss,
const pa_channel_map *map,
const pa_buffer_attr *attr,
int *rerror) {
pa_simple *p;
int error = PA_ERR_INTERNAL, r;
CHECK_VALIDITY_RETURN_ANY(rerror, !server || *server, PA_ERR_INVALID, NULL);
CHECK_VALIDITY_RETURN_ANY(rerror, dir == PA_STREAM_PLAYBACK || dir == PA_STREAM_RECORD, PA_ERR_INVALID, NULL);
CHECK_VALIDITY_RETURN_ANY(rerror, !dev || *dev, PA_ERR_INVALID, NULL);
CHECK_VALIDITY_RETURN_ANY(rerror, ss && pa_sample_spec_valid(ss), PA_ERR_INVALID, NULL);
CHECK_VALIDITY_RETURN_ANY(rerror, !map || (pa_channel_map_valid(map) && map->channels == ss->channels), PA_ERR_INVALID, NULL)
p = pa_xnew0(pa_simple, 1);
p->direction = dir;
if (!(p->mainloop = pa_threaded_mainloop_new()))
goto fail;
if (!(p->context = pa_context_new(pa_threaded_mainloop_get_api(p->mainloop), name)))
goto fail;
pa_context_set_state_callback(p->context, context_state_cb, p);
if (pa_context_connect(p->context, server, 0, NULL) < 0) {
error = pa_context_errno(p->context);
goto fail;
}
pa_threaded_mainloop_lock(p->mainloop);
if (pa_threaded_mainloop_start(p->mainloop) < 0)
goto unlock_and_fail;
for (;;) {
pa_context_state_t state;
state = pa_context_get_state(p->context);
if (state == PA_CONTEXT_READY)
break;
if (!PA_CONTEXT_IS_GOOD(state)) {
error = pa_context_errno(p->context);
goto unlock_and_fail;
}
/* Wait until the context is ready */
pa_threaded_mainloop_wait(p->mainloop);
}
if (!(p->stream = pa_stream_new(p->context, stream_name, ss, map))) {
error = pa_context_errno(p->context);
goto unlock_and_fail;
}
pa_stream_set_state_callback(p->stream, stream_state_cb, p);
pa_stream_set_read_callback(p->stream, stream_request_cb, p);
pa_stream_set_write_callback(p->stream, stream_request_cb, p);
pa_stream_set_latency_update_callback(p->stream, stream_latency_update_cb, p);
if (dir == PA_STREAM_PLAYBACK)
r = pa_stream_connect_playback(p->stream, dev, attr,
PA_STREAM_INTERPOLATE_TIMING
|PA_STREAM_ADJUST_LATENCY
|PA_STREAM_AUTO_TIMING_UPDATE, NULL, NULL);
else
r = pa_stream_connect_record(p->stream, dev, attr,
PA_STREAM_INTERPOLATE_TIMING
|PA_STREAM_ADJUST_LATENCY
|PA_STREAM_AUTO_TIMING_UPDATE);
if (r < 0) {
error = pa_context_errno(p->context);
goto unlock_and_fail;
}
for (;;) {
pa_stream_state_t state;
state = pa_stream_get_state(p->stream);
if (state == PA_STREAM_READY)
break;
if (!PA_STREAM_IS_GOOD(state)) {
error = pa_context_errno(p->context);
goto unlock_and_fail;
}
/* Wait until the stream is ready */
pa_threaded_mainloop_wait(p->mainloop);
}
pa_threaded_mainloop_unlock(p->mainloop);
return p;
unlock_and_fail:
pa_threaded_mainloop_unlock(p->mainloop);
fail:
if (rerror)
*rerror = error;
pa_simple_free(p);
return NULL;
}
/* Called from main context */
pa_source* pa_source_new(
pa_core *core,
pa_source_new_data *data,
pa_source_flags_t flags) {
pa_source *s;
const char *name;
char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
char *pt;
pa_assert(core);
pa_assert(data);
pa_assert(data->name);
pa_assert_ctl_context();
s = pa_msgobject_new(pa_source);
if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_SOURCE, s, data->namereg_fail))) {
pa_log_debug("Failed to register name %s.", data->name);
pa_xfree(s);
return NULL;
}
pa_source_new_data_set_name(data, name);
if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_NEW], data) < 0) {
pa_xfree(s);
pa_namereg_unregister(core, name);
return NULL;
}
/* FIXME, need to free s here on failure */
pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
pa_return_null_if_fail(data->name && pa_utf8_valid(data->name) && data->name[0]);
pa_return_null_if_fail(data->sample_spec_is_set && pa_sample_spec_valid(&data->sample_spec));
if (!data->channel_map_is_set)
pa_return_null_if_fail(pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT));
pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
if (!data->volume_is_set)
pa_cvolume_reset(&data->volume, data->sample_spec.channels);
pa_return_null_if_fail(pa_cvolume_valid(&data->volume));
pa_return_null_if_fail(pa_cvolume_compatible(&data->volume, &data->sample_spec));
if (!data->muted_is_set)
data->muted = FALSE;
if (data->card)
pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->card->proplist);
pa_device_init_description(data->proplist);
pa_device_init_icon(data->proplist, FALSE);
pa_device_init_intended_roles(data->proplist);
if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_FIXATE], data) < 0) {
pa_xfree(s);
pa_namereg_unregister(core, name);
return NULL;
}
s->parent.parent.free = source_free;
s->parent.process_msg = pa_source_process_msg;
s->core = core;
s->state = PA_SOURCE_INIT;
s->flags = flags;
s->priority = 0;
s->suspend_cause = 0;
s->name = pa_xstrdup(name);
s->proplist = pa_proplist_copy(data->proplist);
s->driver = pa_xstrdup(pa_path_get_filename(data->driver));
s->module = data->module;
s->card = data->card;
s->priority = pa_device_init_priority(s->proplist);
s->sample_spec = data->sample_spec;
s->channel_map = data->channel_map;
s->outputs = pa_idxset_new(NULL, NULL);
s->n_corked = 0;
s->monitor_of = NULL;
s->output_from_master = NULL;
s->volume = data->volume;
pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
s->base_volume = PA_VOLUME_NORM;
s->n_volume_steps = PA_VOLUME_NORM+1;
s->muted = data->muted;
s->refresh_volume = s->refresh_muted = FALSE;
reset_callbacks(s);
s->userdata = NULL;
s->asyncmsgq = NULL;
/* As a minor optimization we just steal the list instead of
* copying it here */
s->ports = data->ports;
data->ports = NULL;
s->active_port = NULL;
s->save_port = FALSE;
if (data->active_port && s->ports)
if ((s->active_port = pa_hashmap_get(s->ports, data->active_port)))
s->save_port = data->save_port;
if (!s->active_port && s->ports) {
void *state;
pa_device_port *p;
PA_HASHMAP_FOREACH(p, s->ports, state)
if (!s->active_port || p->priority > s->active_port->priority)
s->active_port = p;
}