add is-available verb

4 files changed, 40 insertions, 3 deletions

diff --git a/ponymix.1 b/ponymix.1
index e93a405..c78d482 100644
--- a/ponymix.1
+++ b/ponymix.1
@@ -76,6 +76,10 @@ Mute, unmute, or toggle the mute status of a device.
 .IP "\fBis-muted\fR"
 Check if a device is muted. ponymix will exit zero if muted, and non-zero
 otherwise.
+.IP "\fis-available\fR"
+Check if a device is available. This usually applies to headphone jacks, but not
+all devices will support this check. ponymix will exit zero if the port is
+definitively available, and non-zero if unavailable or unknown.
 .SS Application Commands
 These commands are specific to devices which refer to streams of applications.
 For these commands, \fIsink\fR and \fIsource\fR are synonymous with \fIsink-input\fR
diff --git a/ponymix.cc b/ponymix.cc
index 05fbf89..15e09f3 100644
--- a/ponymix.cc
+++ b/ponymix.cc
@@ -169,6 +169,7 @@ static void Print(const Card& card) {
          card.Name().c_str(),
          card.Driver().c_str(),
          card.ActiveProfile().name.c_str());
+
 }
 
 static void Print(const Profile& profile, bool active) {
@@ -395,6 +396,11 @@ static int Kill(PulseClient& ponymix, int, char*[]) {
   return !ponymix.Kill(*device);
 }
 
+static int IsAvailable(PulseClient& ponymix, int, char*[]) {
+  auto device = string_to_device_or_die(ponymix, opt_device, opt_devtype);
+  return ponymix.Availability(*device) == Device::AVAILABLE_YES;
+}
+
 static bool endswith(const string& subject, const string& predicate) {
   if (subject.size() < predicate.size()) {
     return false;
@@ -430,7 +436,8 @@ static const std::pair<const string, const Command>& string_to_command(
     { "get-profile",         { GetProfile,          { 0, 0 } } },
     { "set-profile",         { SetProfile,          { 1, 1 } } },
     { "move",                { Move,                { 1, 1 } } },
-    { "kill",                { Kill,                { 0, 0 } } }
+    { "kill",                { Kill,                { 0, 0 } } },
+    { "is-available",        { IsAvailable,         { 0, 0 } } },
   };
 
   const auto match = actionmap.lower_bound(str);
@@ -488,7 +495,7 @@ static void usage() {
         "     --max-volume VALUE  use VALUE as max volume\n"
         "     --short             output brief (parseable) lists\n"
         "     --source            alias to -t source\n"
-        "     --input             alais to -t source\n"
+        "     --input             alias to -t source\n"
         "     --sink              alias to -t sink\n"
         "     --output            alias to -t sink\n"
         "     --sink-input        alias to -t sink-input\n"
@@ -510,7 +517,8 @@ static void usage() {
         "  mute                   mute device\n"
         "  unmute                 unmute device\n"
         "  toggle                 toggle mute\n"
-        "  is-muted               check if muted\n", stdout);
+        "  is-muted               check if muted\n"
+        "  is-available           check if available\n", stdout);
   fputs("\nApplication Commands:\n"
         "  move DEVICE            move target device to DEVICE\n"
         "  kill DEVICE            kill target DEVICE\n", stdout);
diff --git a/pulse.cc b/pulse.cc
index 3f98b19..1704bb8 100644
--- a/pulse.cc
+++ b/pulse.cc
@@ -596,6 +596,20 @@ Device::Device(const pa_sink_info* info) :
   ops_.Kill = nullptr;
   ops_.Move = nullptr;
   ops_.SetDefault = pa_context_set_default_sink;
+
+  if (info->active_port) {
+    switch (info->active_port->available) {
+      case PA_PORT_AVAILABLE_YES:
+        available_ = Device::AVAILABLE_YES;
+        break;
+      case PA_PORT_AVAILABLE_NO:
+        available_ = Device::AVAILABLE_NO;
+        break;
+      case PA_PORT_AVAILABLE_UNKNOWN:
+        available_ = Device::AVAILABLE_UNKNOWN;
+        break;
+    }
+  }
 }
 
 Device::Device(const pa_source_info* info) :
diff --git a/pulse.h b/pulse.h
index 2d980f0..7c17baf 100644
--- a/pulse.h
+++ b/pulse.h
@@ -48,6 +48,12 @@ struct Operations {
 
 class Device {
  public:
+  typedef enum {
+    AVAILABLE_UNKNOWN = 0,
+    AVAILABLE_NO,
+    AVAILABLE_YES,
+  } Availability;
+
   Device(const pa_source_info* info);
   Device(const pa_sink_info* info);
   Device(const pa_sink_input_info* info);
@@ -77,6 +83,7 @@ class Device {
   int balance_;
   uint32_t card_idx_;
   Operations ops_;
+  Device::Availability available_ = Device::AVAILABLE_UNKNOWN;
 };
 
 class Card {
@@ -198,6 +205,10 @@ class PulseClient {
   bool IsMuted(const Device& device) const { return device.mute_; };
   bool SetMute(Device& device, bool mute);
 
+  Device::Availability Availability(const Device& device) const {
+    return device.available_;
+  }
+
   // Set the profile for a card by name.
   bool SetProfile(Card& card, const string& profile);