[vlc-devel] [PATCH 2/4] lib/audio: provide API to set and get audio filters

[Pierre Lamot]

---
 include/vlc/libvlc_media_player.h | 19 +++++++++++++++++++
 lib/audio.c                       | 15 +++++++++++++++
 lib/libvlc.sym                    |  2 ++
 3 files changed, 36 insertions(+)

diff --git a/include/vlc/libvlc_media_player.h b/include/vlc/libvlc_media_player.h
index a9c62d3e6d..579a6941ad 100644
--- a/include/vlc/libvlc_media_player.h
+++ b/include/vlc/libvlc_media_player.h
@@ -1937,6 +1937,25 @@ LIBVLC_API int64_t libvlc_audio_get_delay( libvlc_media_player_t *p_mi );
  */
 LIBVLC_API int libvlc_audio_set_delay( libvlc_media_player_t *p_mi, int64_t i_delay );
 
+/**
+ * Set the active video filter as string.
+ *
+ * \param p_mi libvlc media player instance
+ * \param value colon separated list of plugin names
+ * \version LibVLC 3.0.0 and later.
+ */
+LIBVLC_API void libvlc_audio_set_filters( libvlc_media_player_t *p_mi,
+                                          const char *value );
+
+/**
+ * Get the active video filter as string.
+ *
+ * \param p_mi libvlc media player instance
+ * \return colon separated list of plugin names
+ * \version LibVLC 3.0.0 and later.
+ */
+LIBVLC_API const char *libvlc_audio_get_filters( libvlc_media_player_t *p_mi );
+
 /**
  * Get the number of equalizer presets.
  *
diff --git a/lib/audio.c b/lib/audio.c
index 3aed6f5ff3..d83d9cdf36 100644
--- a/lib/audio.c
+++ b/lib/audio.c
@@ -506,6 +506,21 @@ int libvlc_audio_set_delay( libvlc_media_player_t *p_mi, int64_t i_delay )
     return ret;
 }
 
+void libvlc_audio_set_filters( libvlc_media_player_t *p_mi, const char *value )
+{
+    audio_output_t *p_aout = GetAOut( p_mi );
+    var_SetString( p_aout, "audio-filter", value );
+    vlc_object_release( p_aout );
+}
+
+const char *libvlc_audio_get_filters( libvlc_media_player_t *p_mi )
+{
+    audio_output_t *p_aout = GetAOut(p_mi);
+    char *psz_audio = var_GetNonEmptyString( p_aout, "audio-filter" );
+    vlc_object_release( p_aout );
+    return psz_audio;
+}
+
 /*****************************************************************************
  * libvlc_audio_equalizer_get_preset_count : Get the number of equalizer presets
  *****************************************************************************/
diff --git a/lib/libvlc.sym b/lib/libvlc.sym
index b768cc919d..cd5f433365 100644
--- a/lib/libvlc.sym
+++ b/lib/libvlc.sym
@@ -29,6 +29,7 @@ libvlc_audio_output_set
 libvlc_audio_output_set_device_type
 libvlc_audio_get_channel
 libvlc_audio_get_delay
+libvlc_audio_get_filters
 libvlc_audio_get_mute
 libvlc_audio_get_track
 libvlc_audio_get_track_count
@@ -36,6 +37,7 @@ libvlc_audio_get_track_description
 libvlc_audio_get_volume
 libvlc_audio_set_channel
 libvlc_audio_set_delay
+libvlc_audio_set_filters
 libvlc_audio_set_mute
 libvlc_audio_set_track
 libvlc_audio_set_volume
-- 
2.14.1