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fix(volume): Proper handling of module events

Browse source 
When processing module events, a new instance for each
mixer is created so that the module event loop will receive
the mixer update events.

Closes jaagr/lemonbuddy#116
Closes jaagr/lemonbuddy#89
This commit is contained in:
Michael Carlberg 2016-10-25 08:53:55 +02:00
parent 4b2c73452c
commit 2776155794
2 changed files with 74 additions and 86 deletions
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24
include/adapters/alsa.hpp
View file

@ -28,14 +28,14 @@ void throw_exception(string&& message, int error_code) {
class alsa_ctl_interface {
public:
explicit alsa_ctl_interface(int numid) {
explicit alsa_ctl_interface(int numid) : m_numid(numid) {
int err = 0;
snd_ctl_elem_info_alloca(&m_info);
snd_ctl_elem_value_alloca(&m_value);
snd_ctl_elem_id_alloca(&m_id);
snd_ctl_elem_id_set_numid(m_id, numid);
snd_ctl_elem_id_set_numid(m_id, m_numid);
snd_ctl_elem_info_set_id(m_info, m_id);
if ((err = snd_ctl_open(&m_ctl, ALSA_SOUNDCARD, SND_CTL_NONBLOCK | SND_CTL_READONLY)) < 0)
@ -58,8 +58,6 @@ class alsa_ctl_interface {
if ((err = snd_ctl_subscribe_events(m_ctl, 1)) < 0)
throw alsa_ctl_interface_error(
"Could not subscribe to events: " + to_string(snd_ctl_elem_id_get_numid(m_id)));
// log_trace("Successfully initialized control interface with ID: "+ Intstring(numid));
}
~alsa_ctl_interface() {
@ -68,6 +66,10 @@ class alsa_ctl_interface {
snd_hctl_close(m_hctl);
}
int get_numid() {
return m_numid;
}
bool wait(int timeout = -1) {
assert(m_ctl);
@ -103,9 +105,13 @@ class alsa_ctl_interface {
return snd_ctl_elem_value_get_boolean(m_value, 0);
}
void process_events() {}
void process_events() {
wait(0);
}
private:
int m_numid = 0;
threading_util::spin_lock m_lock;
snd_hctl_t* m_hctl = nullptr;
@ -122,7 +128,7 @@ class alsa_ctl_interface {
class alsa_mixer {
public:
explicit alsa_mixer(string mixer_control_name) {
explicit alsa_mixer(string mixer_control_name) : m_name(mixer_control_name) {
snd_mixer_selem_id_t* mixer_id;
snd_mixer_selem_id_alloca(&mixer_id);
@ -154,6 +160,10 @@ class alsa_mixer {
snd_mixer_close(m_hardwaremixer);
}
string get_name() {
return m_name;
}
bool wait(int timeout = -1) {
assert(m_hardwaremixer);
@ -239,6 +249,8 @@ class alsa_mixer {
}
private:
string m_name;
threading_util::spin_lock m_lock;
snd_mixer_t* m_hardwaremixer = nullptr;

136
include/modules/volume.hpp
View file

@ -24,58 +24,40 @@ namespace modules {
void setup() {
// Load configuration values {{{
auto master_mixer = m_conf.get<string>(name(), "master-mixer", "Master");
auto speaker_mixer = m_conf.get<string>(name(), "speaker-mixer", "");
auto headphone_mixer = m_conf.get<string>(name(), "headphone-mixer", "");
string master_mixer_name{"Master"};
string speaker_mixer_name;
string headphone_mixer_name;
GET_CONFIG_VALUE(name(), m_headphoneid, "headphone-id");
GET_CONFIG_VALUE(name(), master_mixer_name, "master-mixer");
GET_CONFIG_VALUE(name(), speaker_mixer_name, "speaker-mixer");
GET_CONFIG_VALUE(name(), headphone_mixer_name, "headphone-mixer");
if (!headphone_mixer.empty() && m_headphoneid == -1)
throw module_error("Missing required property value for \"headphone-id\"...");
else if (headphone_mixer.empty() && m_headphoneid != -1)
throw module_error("Missing required property value for \"headphone-mixer\"...");
if (!headphone_mixer_name.empty())
REQ_CONFIG_VALUE(name(), m_headphoneid, "headphone-id");
if (string_util::lower(speaker_mixer) == "master")
throw module_error(
"The \"Master\" mixer is already processed internally. Specify another "
"mixer or comment out the \"speaker-mixer\" parameter...");
if (string_util::lower(headphone_mixer) == "master")
throw module_error(
"The \"Master\" mixer is already processed internally. Specify another "
"mixer or comment out the \"headphone-mixer\" parameter...");
if (string_util::compare(speaker_mixer_name, "master"))
throw module_error("Master mixer is already defined");
if (string_util::compare(headphone_mixer_name, "master"))
throw module_error("Master mixer is already defined");
// }}}
// Setup mixers {{{
auto create_mixer = [this](string mixer_name) {
try {
return mixer_t{new mixer_t::element_type{mixer_name}};
} catch (const alsa_mixer_error& e) {
m_log.err("%s: Failed to open '%s' mixer => %s", name(), mixer_name, e.what());
return mixer_t{};
}
};
m_mixers[mixer::MASTER] = create_mixer(master_mixer);
if (!speaker_mixer.empty())
m_mixers[mixer::SPEAKER] = create_mixer(speaker_mixer);
if (!headphone_mixer.empty())
m_mixers[mixer::HEADPHONE] = create_mixer(headphone_mixer);
if (m_mixers.empty()) {
m_log.err("%s: No configured mixers, stopping module...", name());
stop();
return;
}
if (m_mixers[mixer::HEADPHONE] && m_headphoneid > -1) {
try {
m_controls[control::HEADPHONE] = control_t{new control_t::element_type{m_headphoneid}};
} catch (const alsa_ctl_interface_error& e) {
m_log.err("%s: Failed to open headphone control interface => %s", name(), e.what());
m_controls[control::HEADPHONE].reset();
}
try {
if (!master_mixer_name.empty())
m_mixers[mixer::MASTER].reset(new mixer_t::element_type{master_mixer_name});
if (!speaker_mixer_name.empty())
m_mixers[mixer::SPEAKER].reset(new mixer_t::element_type{speaker_mixer_name});
if (!headphone_mixer_name.empty())
m_mixers[mixer::HEADPHONE].reset(new mixer_t::element_type{headphone_mixer_name});
if (m_mixers[mixer::HEADPHONE])
m_controls[control::HEADPHONE].reset(new control_t::element_type{m_headphoneid});
if (m_mixers.empty())
throw module_error("No configured mixers");
} catch (const alsa_mixer_error& err) {
throw module_error(err.what());
} catch (const alsa_ctl_interface_error& err) {
throw module_error(err.what());
}
// }}}
@ -86,19 +68,16 @@ namespace modules {
m_formatter->add(
FORMAT_MUTED, TAG_LABEL_MUTED, {TAG_RAMP_VOLUME, TAG_LABEL_MUTED, TAG_BAR_VOLUME});
if (m_formatter->has(TAG_BAR_VOLUME)) {
if (m_formatter->has(TAG_BAR_VOLUME))
m_bar_volume = load_progressbar(m_bar, m_conf, name(), TAG_BAR_VOLUME);
}
if (m_formatter->has(TAG_LABEL_VOLUME, FORMAT_VOLUME))
m_label_volume = load_optional_label(m_conf, name(), TAG_LABEL_VOLUME, "%percentage%");
if (m_formatter->has(TAG_LABEL_MUTED, FORMAT_MUTED))
m_label_muted = load_optional_label(m_conf, name(), TAG_LABEL_MUTED, "%percentage%");
if (m_formatter->has(TAG_RAMP_VOLUME)) {
m_ramp_volume = load_ramp(m_conf, name(), TAG_RAMP_VOLUME);
m_ramp_headphones = load_ramp(m_conf, name(), TAG_RAMP_HEADPHONES, false);
}
if (m_formatter->has(TAG_LABEL_VOLUME, FORMAT_VOLUME)) {
m_label_volume = load_optional_label(m_conf, name(), TAG_LABEL_VOLUME, "%percentage%");
}
if (m_formatter->has(TAG_LABEL_MUTED, FORMAT_MUTED)) {
m_label_muted = load_optional_label(m_conf, name(), TAG_LABEL_MUTED, "%percentage%");
}
// }}}
}
@ -111,23 +90,20 @@ namespace modules {
// Poll for mixer and control events {{{
try {
bool has_event = false;
if (m_mixers[mixer::MASTER])
has_event |= m_mixers[mixer::MASTER]->wait(25);
if (m_mixers[mixer::SPEAKER])
has_event |= m_mixers[mixer::SPEAKER]->wait(25);
if (m_mixers[mixer::HEADPHONE])
has_event |= m_mixers[mixer::HEADPHONE]->wait(25);
if (m_controls[control::HEADPHONE])
has_event |= m_controls[control::HEADPHONE]->wait(25);
return has_event;
if (m_mixers[mixer::MASTER] && m_mixers[mixer::MASTER]->wait(25))
return true;
if (m_mixers[mixer::SPEAKER] && m_mixers[mixer::SPEAKER]->wait(25))
return true;
if (m_mixers[mixer::HEADPHONE] && m_mixers[mixer::HEADPHONE]->wait(25))
return true;
if (m_controls[control::HEADPHONE] && m_controls[control::HEADPHONE]->wait(25))
return true;
} catch (const alsa_exception& e) {
m_log.err("%s: %s", name(), e.what());
return false;
}
return false;
// }}}
}
@ -141,7 +117,7 @@ namespace modules {
if (m_mixers[mixer::HEADPHONE])
m_mixers[mixer::HEADPHONE]->process_events();
if (m_controls[control::HEADPHONE])
m_controls[control::HEADPHONE]->wait(0);
m_controls[control::HEADPHONE]->process_events();
// }}}
// Get volume, mute and headphone state {{{
@ -151,16 +127,16 @@ namespace modules {
m_headphones = false;
if (m_mixers[mixer::MASTER]) {
m_volume *= m_mixers[mixer::MASTER]->get_volume() / 100.0f;
m_volume = m_volume * m_mixers[mixer::MASTER]->get_volume() / 100.0f;
m_muted = m_muted || m_mixers[mixer::MASTER]->is_muted();
}
if (m_controls[control::HEADPHONE] && m_controls[control::HEADPHONE]->test_device_plugged()) {
m_headphones = true;
m_volume *= m_mixers[mixer::HEADPHONE]->get_volume() / 100.0f;
m_volume = m_volume * m_mixers[mixer::HEADPHONE]->get_volume() / 100.0f;
m_muted = m_muted || m_mixers[mixer::HEADPHONE]->is_muted();
} else if (m_mixers[mixer::SPEAKER]) {
m_volume *= m_mixers[mixer::SPEAKER]->get_volume() / 100.0f;
m_volume = m_volume * m_mixers[mixer::SPEAKER]->get_volume() / 100.0f;
m_muted = m_muted || m_mixers[mixer::SPEAKER]->is_muted();
}
@ -171,6 +147,7 @@ namespace modules {
m_label_volume->reset_tokens();
m_label_volume->replace_token("%percentage%", to_string(m_volume) + "%");
}
if (m_label_muted) {
m_label_muted->reset_tokens();
m_label_muted->replace_token("%percentage%", to_string(m_volume) + "%");
@ -220,12 +197,14 @@ namespace modules {
if (!m_mixers[mixer::MASTER])
return false;
vector<mixer_t> mixers{m_mixers[mixer::MASTER]};
vector<mixer_t> mixers;
if (m_mixers[mixer::MASTER])
mixers.emplace_back(new mixer_t::element_type(m_mixers[mixer::MASTER]->get_name()));
if (m_mixers[mixer::HEADPHONE] && m_headphones)
mixers.emplace_back(m_mixers[mixer::HEADPHONE]);
else if (m_mixers[mixer::SPEAKER])
mixers.emplace_back(m_mixers[mixer::SPEAKER]);
mixers.emplace_back(new mixer_t::element_type(m_mixers[mixer::HEADPHONE]->get_name()));
if (m_mixers[mixer::SPEAKER] && !m_headphones)
mixers.emplace_back(new mixer_t::element_type(m_mixers[mixer::SPEAKER]->get_name()));
try {
if (cmd.compare(0, strlen(EVENT_TOGGLE_MUTE), EVENT_TOGGLE_MUTE) == 0) {
@ -247,10 +226,6 @@ namespace modules {
m_log.err("%s: Failed to handle command (%s)", name(), err.what());
}
// Update the mute flag since we won't poll the new state when
// sending the broadcast related to this event
m_muted = !m_muted;
return true;
}
@ -282,11 +257,12 @@ namespace modules {
map<mixer, mixer_t> m_mixers;
map<control, control_t> m_controls;
int m_headphoneid = -1;
int m_volume = 0;
int m_headphoneid = 0;
stateflag m_muted{false};
stateflag m_headphones{false};
std::atomic<int> m_volume{0};
};
}