playback-history-qt: Add new plugin

This plugin tracks and provides access to playback history.
History entries are stored in memory (not persistent) based on the
played song or album which can be configured in the plugin settings.

See also: PR #138

configure.ac

@@ -89,7 +89,7 @@ if test "x$USE_GTK" = "xyes" ; then
 fi
 
 if test "x$USE_QT" = "xyes" ; then
-    GENERAL_PLUGINS="$GENERAL_PLUGINS albumart-qt lyrics-qt playlist-manager-qt search-tool-qt song-info-qt statusicon-qt"
+    GENERAL_PLUGINS="$GENERAL_PLUGINS albumart-qt lyrics-qt playback-history-qt playlist-manager-qt search-tool-qt song-info-qt statusicon-qt"
     GENERAL_PLUGINS="$GENERAL_PLUGINS qtui skins-qt"
     VISUALIZATION_PLUGINS="$VISUALIZATION_PLUGINS blur_scope-qt qt-spectrum vumeter-qt"
 fi
@@ -888,6 +888,7 @@ if test "x$USE_QT" = "xyes" ; then
     echo "  Album Art:                              yes"
     echo "  Blur Scope:                             yes"
     echo "  OpenGL Spectrum Analyzer:               $have_qtglspectrum"
+    echo "  Playback History:                       yes"
     echo "  Playlist Manager:                       yes"
     echo "  Search Tool:                            yes"
     echo "  Song Info:                              yes"

meson.build

@@ -309,6 +309,7 @@ if meson.version().version_compare('>= 0.53')
       'Album Art': true,
       'Blur Scope': true,
       'OpenGL Spectrum Analyzer': get_variable('have_qtglspectrum', false),
+      'Playback History': true,
       'Playlist Manager': true,
       'Search Tool': true,
       'Song Info': true,

src/meson.build

@@ -97,6 +97,7 @@ if conf.has('USE_QT')
   subdir('albumart-qt')
   subdir('blur_scope-qt')
   subdir('lyrics-qt')
+  subdir('playback-history-qt')
   subdir('playlist-manager-qt')
   subdir('qt-spectrum')
   subdir('qtui')

src/playback-history-qt/Makefile

@@ -0,0 +1,13 @@
+PLUGIN = playback-history-qt${PLUGIN_SUFFIX}
+
+SRCS = playback-history.cc
+
+include ../../buildsys.mk
+include ../../extra.mk
+
+plugindir := ${plugindir}/${GENERAL_PLUGIN_DIR}
+
+LD = ${CXX}
+CPPFLAGS += -I../.. ${QT_CFLAGS}
+CFLAGS += ${PLUGIN_CFLAGS}
+LIBS += ${QT_LIBS} -laudqt

src/playback-history-qt/meson.build

@@ -0,0 +1,7 @@
+shared_module('playback-history-qt',
+  'playback-history.cc',
+  dependencies: [audacious_dep, qt_dep, audqt_dep],
+  name_prefix: '',
+  install: true,
+  install_dir: general_plugin_dir
+)