libvlc: add a function get the statistics about the current media (also add a...

libvlc: add a function get the statistics about the current media (also add a structure to expose this values).
All statistics are not exported, only the most used are exported.

include/vlc/libvlc_media.h

@@ -99,6 +99,44 @@ typedef enum libvlc_media_option_t
     libvlc_media_option_unique = 0x100
 } libvlc_media_option_t;
 
+
+/** defgroup libvlc_media_stats_t libvlc_media_stats_t
+ * \ingroup libvlc_media
+ * LibVLC Media statistics
+ * @{
+ */
+typedef struct libvlc_media_stats_t
+{
+    /* Input */
+    int         i_read_bytes;
+    float       f_input_bitrate;
+
+    /* Demux */
+    int         i_demux_read_bytes;
+    float       f_demux_bitrate;
+    int         i_demux_corrupted;
+    int         i_demux_discontinuity;
+
+    /* Decoders */
+    int         i_decoded_video;
+    int         i_decoded_audio;
+
+    /* Video Output */
+    int         i_displayed_pictures;
+    int         i_lost_pictures;
+
+    /* Audio output */
+    int         i_played_abuffers;
+    int         i_lost_abuffers;
+
+    /* Stream output */
+    int         i_sent_packets;
+    int         i_sent_bytes;
+    float       f_send_bitrate;
+} libvlc_media_stats_t;
+/** @}*/
+
+
 /**
  * Create a media with the given MRL.
  *
@@ -224,6 +262,16 @@ VLC_PUBLIC_API libvlc_state_t libvlc_media_get_state(
                                    libvlc_media_t *p_meta_desc );
 
 
+/**
+ * get the current statistics about the media
+ * @param p_md: media descriptor object
+ * @param p_stats: structure that contain the statistics about the media
+ *                 (this structure must be allocated by the caller)
+ * @return true if the statistics are available, false otherwise
+ */
+VLC_PUBLIC_API int libvlc_media_get_stats( libvlc_media_t *p_md,
+                                           libvlc_media_stats_t *p_stats );
+
 /**
  * Get subitems of media descriptor object. This will increment
  * the reference count of supplied media descriptor object. Use

src/control/media.c

@@ -513,6 +513,41 @@ libvlc_media_subitems( libvlc_media_t * p_md )
     return p_md->p_subitems;
 }
 
+/**************************************************************************
+ * Setter for state information (LibVLC Internal)
+ **************************************************************************/
+int libvlc_media_get_stats( libvlc_media_t *p_md,
+                            libvlc_media_stats_t *p_stats )
+{
+    if( !p_md->p_input_item )
+        return false;
+
+    input_stats_t *p_itm_stats = p_md->p_input_item->p_stats;
+    vlc_mutex_lock( &p_itm_stats->lock );
+    p_stats->i_read_bytes = p_itm_stats->i_read_bytes;
+    p_stats->f_input_bitrate = p_itm_stats->f_input_bitrate;
+
+    p_stats->i_demux_read_bytes = p_itm_stats->i_demux_read_bytes;
+    p_stats->f_demux_bitrate = p_itm_stats->f_demux_bitrate;
+    p_stats->i_demux_corrupted = p_itm_stats->i_demux_corrupted;
+    p_stats->i_demux_discontinuity = p_itm_stats->i_demux_discontinuity;
+
+    p_stats->i_decoded_video = p_itm_stats->i_decoded_video;
+    p_stats->i_decoded_audio = p_itm_stats->i_decoded_audio;
+
+    p_stats->i_displayed_pictures = p_itm_stats->i_displayed_pictures;
+    p_stats->i_lost_pictures = p_itm_stats->i_lost_pictures;
+
+    p_stats->i_played_abuffers = p_itm_stats->i_played_abuffers;
+    p_stats->i_lost_abuffers = p_itm_stats->i_lost_abuffers;
+
+    p_stats->i_sent_packets = p_itm_stats->i_sent_packets;
+    p_stats->i_sent_bytes = p_itm_stats->i_sent_bytes;
+    p_stats->f_send_bitrate = p_itm_stats->f_send_bitrate;
+    vlc_mutex_unlock( &p_itm_stats->lock );
+    return true;
+}
+
 /**************************************************************************
  * event_manager
  **************************************************************************/

src/libvlc.sym

@@ -64,6 +64,7 @@ libvlc_media_get_duration
 libvlc_media_get_meta
 libvlc_media_get_mrl
 libvlc_media_get_state
+libvlc_media_get_stats
 libvlc_media_get_user_data
 libvlc_media_is_preparsed
 libvlc_media_library_load