audio::Speaker.getDuration()

src/audio/AL/ALAudio.cpp

@@ -25,7 +25,10 @@ Speaker* ALSound::newInstance(int priority, int channel) const {
         return nullptr;
     }
     AL_CHECK(alSourcei(source, AL_BUFFER, buffer));
-    return new ALSpeaker(al, source, priority, channel);
+
+    auto speaker = new ALSpeaker(al, source, priority, channel);
+    speaker->duration = duration;
+    return speaker;
 }
 
 ALStream::ALStream(ALAudio* al, std::shared_ptr<PCMStream> source, bool keepSource)
@@ -77,6 +80,11 @@ void ALStream::bindSpeaker(speakerid_t speaker) {
         sp->stop();
     }
     this->speaker = speaker;
+    sp = audio::get_speaker(speaker);
+    if (sp) {
+        auto alspeaker = dynamic_cast<ALSpeaker*>(sp);
+        alspeaker->duration = source->getTotalDuration();
+    }
 }
 
 speakerid_t ALStream::getSpeaker() const {
@@ -207,6 +215,10 @@ duration_t ALSpeaker::getTime() const {
     return static_cast<duration_t>(AL::getSourcef(source, AL_SEC_OFFSET));
 }
 
+duration_t ALSpeaker::getDuration() const {
+    return duration;
+}
+
 void ALSpeaker::setTime(duration_t time) {
     AL_CHECK(alSourcef(source, AL_SEC_OFFSET, static_cast<float>(time)));
 }

src/audio/AL/ALAudio.h

@@ -79,6 +79,7 @@ namespace audio {
         bool stopped = true;
         bool paused = false;
         uint source;
+        duration_t duration = 0.0f;
 
         ALSpeaker(ALAudio* al, uint source, int priority, int channel);
         ~ALSpeaker();
@@ -102,6 +103,7 @@ namespace audio {
         void stop() override;
 
         duration_t getTime() const override;
+        duration_t getDuration() const override;
         void setTime(duration_t time) override;
 
         void setPosition(glm::vec3 pos) override;

src/audio/audio.h

@@ -269,6 +269,9 @@ namespace audio {
         /// @return time position in seconds
         virtual duration_t getTime() const = 0;
 
+        /// @brief Get playing audio total duration
+        virtual duration_t getDuration() const = 0;
+
         /// @brief Set playing audio time position
         /// @param time time position in seconds
         virtual void setTime(duration_t time) = 0;

src/logic/scripting/lua/libaudio.cpp

@@ -355,6 +355,18 @@ static int l_audio_get_time(lua_State* L) {
     return 1;
 }
 
+/// @brief audio.get_duration(speakerid: integer) -> number
+static int l_audio_get_duration(lua_State* L) {
+    lua::luaint id = lua_tonumber(L, 1);
+    auto speaker = audio::get_speaker(id);
+    if (speaker != nullptr) {
+        lua_pushnumber(L, speaker->getDuration());
+        return 1;
+    }
+    lua_pushnumber(L, 0.0);
+    return 1;
+}
+
 /// @brief audio.get_position(speakerid: integer) -> number, number, number
 static int l_audio_get_position(lua_State* L) {
     lua::luaint id = lua_tonumber(L, 1);
@@ -399,6 +411,7 @@ const luaL_Reg audiolib [] = {
     {"get_volume", lua_wrap_errors<l_audio_get_volume>},
     {"get_pitch", lua_wrap_errors<l_audio_get_pitch>},
     {"get_time", lua_wrap_errors<l_audio_get_time>},
+    {"get_duration", lua_wrap_errors<l_audio_get_duration>},
     {"get_position", lua_wrap_errors<l_audio_get_position>},
     {"get_velocity", lua_wrap_errors<l_audio_get_velocity>},
     {NULL, NULL}