use f32 float audio format

Author: hack-s

src/caps.c

@@ -20,7 +20,7 @@ const gchar *get_audio_sink_cap(unsigned int type) {
     format =
         GST_AUDIO_CAPS_MAKE("audio/x-raw, "
                             "format = (string) " GST_AUDIO_NE(
-                                S16) ", "
+                                F32) ", "
                                      "layout = (string) interleaved, "
                                      "channels = (int) { 2 }, "
                                      "rate = (int) { 44100 }, "

src/plugin.c

@@ -256,7 +256,7 @@ static gboolean gst_projectm_setup(GstGLBaseAudioVisualizer *glav) {
 
   // Calculate required samples per frame
   bscope->req_spf =
-      (bscope->ainfo.channels * bscope->ainfo.rate * 2) / bscope->vinfo.fps_n;
+      (bscope->ainfo.channels * bscope->ainfo.rate * 4) / bscope->vinfo.fps_n;
 
   // get GStreamer video format and map it to the corresponding OpenGL pixel
   // format
@@ -336,8 +336,8 @@ static gboolean gst_projectm_render(GstGLBaseAudioVisualizer *glav,
   //                  audioMap.size / 8, audio->offset, audio->offset_end,
   //                  bscope->ainfo.rate, bscope->vinfo.fps_n, bscope->req_spf);
 
-  projectm_pcm_add_int16(plugin->priv->handle, (gint16 *)audioMap.data,
-                         audioMap.size / 4, PROJECTM_STEREO);
+  projectm_pcm_add_float(plugin->priv->handle, (gfloat *)audioMap.data,
+                         audioMap.size / 8, PROJECTM_STEREO);
 
   // GST_DEBUG_OBJECT(plugin, "Audio Data: %d %d %d %d", ((gint16
   // *)audioMap.data)[100], ((gint16 *)audioMap.data)[101], ((gint16