[vlc-devel] [PATCH 15/15] lib: media: Expose attached pictures

[Hugo Beauzée-Luyssen]

---
 include/vlc/libvlc_media.h | 14 ++++++++++++++
 lib/libvlc.sym             |  1 +
 lib/media.c                | 38 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 53 insertions(+)

diff --git a/include/vlc/libvlc_media.h b/include/vlc/libvlc_media.h
index 904e265561..5d83fd4c32 100644
--- a/include/vlc/libvlc_media.h
+++ b/include/vlc/libvlc_media.h
@@ -807,6 +807,20 @@ libvlc_media_thumbnail_request_cancel( libvlc_media_thumbnail_request_t *p_req )
 LIBVLC_API void
 libvlc_media_thumbnail_request_destroy( libvlc_media_thumbnail_request_t *p_req );
 
+/**
+ * Get this media's attached pictures
+ * @param md media descriptor object
+ * @param thumbnails address to store an array of libvlc_picture_t into [OUT]
+ * @return The number of attached pictures in the array.
+ *
+ * If this function returns 0, *thumbnails will contain NULL
+ * The caller must call libvlc_picture_release on each pictures in the returned
+ * array, and must free() the array itself
+ */
+LIBVLC_API size_t
+libvlc_media_get_attached_pictures( libvlc_media_t *md,
+                                    libvlc_picture_t*** thumbnails );
+
 /**
  * Add a slave to the current media.
  *
diff --git a/lib/libvlc.sym b/lib/libvlc.sym
index ebdd2db629..5c93e8f70d 100644
--- a/lib/libvlc.sym
+++ b/lib/libvlc.sym
@@ -71,6 +71,7 @@ libvlc_media_discoverer_start
 libvlc_media_discoverer_stop
 libvlc_media_duplicate
 libvlc_media_event_manager
+libvlc_media_get_attached_pictures
 libvlc_media_get_codec_description
 libvlc_media_get_duration
 libvlc_media_get_meta
diff --git a/lib/media.c b/lib/media.c
index 7ab98de7c1..540b7c1642 100644
--- a/lib/media.c
+++ b/lib/media.c
@@ -1301,3 +1301,41 @@ void libvlc_media_slaves_release( libvlc_media_slave_t **pp_slaves,
     }
     free( pp_slaves );
 }
+
+size_t
+libvlc_media_get_attached_pictures( libvlc_media_t *md,
+                                    libvlc_picture_t*** pictures_out )
+{
+    assert( md && pictures_out );
+    input_item_attachment_t **attachments;
+    int res = input_item_GetAttachments( md->p_input_item, &attachments );
+    if( res <= 0 )
+    {
+        *pictures_out = NULL;
+        return 0;
+    }
+    libvlc_picture_t** pictures = *pictures_out =
+            malloc( res * sizeof( *pictures ) );
+    if( !pictures )
+    {
+        for ( int i = 0; i < res; ++i )
+            vlc_input_attachment_Release( attachments[i] );
+        free( attachments );
+        return 0;
+    }
+
+    size_t nb_pictures = 0;
+    for( int i = 0; i < res; ++i )
+    {
+        input_item_attachment_t* a = attachments[i];
+        libvlc_picture_t *pic = libvlc_picture_from_attachment( a );
+        vlc_input_attachment_Release( a );
+        if( !pic )
+            continue;
+        pictures[nb_pictures] = pic;
+        nb_pictures++;
+    }
+    free( attachments );
+
+    return nb_pictures;
+}
-- 
2.28.0