feat(linux): setBalance - doesn't work

novikov-studio · Aug 13, 2022 · cc75572 · cc75572
1 parent 3d03e9c
commit cc75572
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Showing 3 changed files with 26 additions and 1 deletion.
diff --git a/packages/audioplayers_linux/linux/audio_player.cc b/packages/audioplayers_linux/linux/audio_player.cc
@@ -13,6 +13,10 @@ AudioPlayer::AudioPlayer(std::string playerId, FlMethodChannel *channel)
         return;
     }
 
+    // Add audiopanorama plugin
+    panorama = gst_element_factory_make("audiopanorama", "audiopanorama");
+    gst_bin_add(GST_BIN(playbin), panorama);
+
     // Setup source options
     g_signal_connect(playbin, "source-setup",
                      G_CALLBACK(AudioPlayer::SourceSetup), &source);
@@ -190,6 +194,16 @@ void AudioPlayer::OnPlaybackEnded() {
     }
 }
 
+void AudioPlayer::SetBalance(float balance) {
+    if (balance > 1.0f) {
+        balance = 1.0f;
+    } else if (balance < 0.0f) {
+        balance = 0.0f;
+    }
+    g_object_set(G_OBJECT(panorama), "method", 1, NULL);
+    g_object_set(G_OBJECT(panorama), "panorama", balance, NULL);
+}
+
 void AudioPlayer::SetLooping(bool isLooping) {
     _isLooping = isLooping;
 }
@@ -331,6 +345,7 @@ void AudioPlayer::Dispose() {
     }
     gst_object_unref(bus);
     gst_object_unref(source);
+    gst_object_unref(panorama);
 
     gst_element_set_state(playbin, GST_STATE_NULL);
     gst_object_unref(playbin);

diff --git a/packages/audioplayers_linux/linux/audio_player.h b/packages/audioplayers_linux/linux/audio_player.h
@@ -37,6 +37,8 @@ class AudioPlayer {
 
     void Dispose();
 
+    void SetBalance(float balance);
+
     void SetLooping(bool isLooping);
 
     void SetVolume(double volume);
@@ -53,6 +55,7 @@ class AudioPlayer {
     // Gst members
     GstElement *playbin;
     GstElement *source;
+    GstElement *panorama;
     GstBus *bus;
 
     bool _isInitialized = false;

diff --git a/packages/audioplayers_linux/linux/audioplayers_linux_plugin.cc b/packages/audioplayers_linux/linux/audioplayers_linux_plugin.cc
@@ -181,7 +181,14 @@ static void audioplayers_linux_plugin_handle_method_call(
         // TODO check support for low latency mode:
         // https://gstreamer.freedesktop.org/documentation/additional/design/latency.html?gi-language=c
         result = 1;
-    } else {
+    } else if (strcmp(method, "setBalance") == 0) {
+        auto flBalance = fl_value_lookup_string(args, "balance");
+        double balance =
+            flBalance == nullptr ? 0.0f : fl_value_get_float(flBalance);
+        player->SetBalance(balance);
+        result = 1;
+    }
+     else {
         response = FL_METHOD_RESPONSE(fl_method_not_implemented_response_new());
         fl_method_call_respond(method_call, response, nullptr);
         return;