bufferlist: add gst_buffer_list_calculate_size()

Returns size in bytes.

diff --git a/docs/gst/gstreamer-sections.txt b/docs/gst/gstreamer-sections.txt
index e9b6345..2374781 100644 (file)
--- a/docs/gst/gstreamer-sections.txt
+++ b/docs/gst/gstreamer-sections.txt
@@ -395,6 +395,8 @@ gst_buffer_list_foreach
 gst_buffer_list_get
 gst_buffer_list_get_writable
 
+gst_buffer_list_calculate_size
+
 <SUBSECTION Standard>
 GST_BUFFER_LIST
 GST_IS_BUFFER_LIST

diff --git a/gst/gstbufferlist.c b/gst/gstbufferlist.c
index 1e97c79..9ca4d87 100644 (file)
--- a/gst/gstbufferlist.c
+++ b/gst/gstbufferlist.c
@@ -436,3 +436,32 @@ gst_buffer_list_copy_deep (const GstBufferList * list)
 
   return result;
 }
+
+/**
+ * gst_buffer_list_calculate_size:
+ * @list: a #GstBufferList
+ *
+ * Calculates the size of the data contained in buffer list by adding the
+ * size of all buffers.
+ *
+ * Returns: the size of the data contained in buffer list in bytes.
+ *
+ * Since: 1.14
+ */
+gsize
+gst_buffer_list_calculate_size (GstBufferList * list)
+{
+  GstBuffer **buffers;
+  gsize size = 0;
+  guint i, n;
+
+  g_return_val_if_fail (GST_IS_BUFFER_LIST (list), 0);
+
+  n = list->n_buffers;
+  buffers = list->buffers;
+
+  for (i = 0; i < n; ++i)
+    size += gst_buffer_get_size (buffers[i]);
+
+  return size;
+}

diff --git a/gst/gstbufferlist.h b/gst/gstbufferlist.h
index 72eb43e..bb17b45 100644 (file)
--- a/gst/gstbufferlist.h
+++ b/gst/gstbufferlist.h
@@ -164,6 +164,9 @@ gboolean                 gst_buffer_list_foreach               (GstBufferList *l
 GST_EXPORT
 GstBufferList *          gst_buffer_list_copy_deep             (const GstBufferList * list);
 
+GST_EXPORT
+gsize                    gst_buffer_list_calculate_size        (GstBufferList * list);
+
 #define gst_buffer_list_add(l,b) gst_buffer_list_insert((l),-1,(b));
 
 #ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC

diff --git a/tests/check/gst/gstbufferlist.c b/tests/check/gst/gstbufferlist.c
index e5c9f56..a04ebe5 100644 (file)
--- a/tests/check/gst/gstbufferlist.c
+++ b/tests/check/gst/gstbufferlist.c
@@ -460,6 +460,17 @@ GST_START_TEST (test_get_writable)
 
 GST_END_TEST;
 
+GST_START_TEST (test_calc_size)
+{
+  gst_buffer_list_add (list, gst_buffer_new_wrapped (g_strdup ("Hello"), 5));
+  gst_buffer_list_add (list, gst_buffer_new_wrapped (g_strdup (", "), 2));
+  gst_buffer_list_add (list, gst_buffer_new_wrapped (g_strdup ("world!"), 6));
+
+  fail_unless_equals_int (5 + 2 + 6, gst_buffer_list_calculate_size (list));
+}
+
+GST_END_TEST;
+
 static Suite *
 gst_buffer_list_suite (void)
 {
@@ -476,6 +487,7 @@ gst_buffer_list_suite (void)
   tcase_add_test (tc_chain, test_foreach);
   tcase_add_test (tc_chain, test_expand_and_remove);
   tcase_add_test (tc_chain, test_get_writable);
+  tcase_add_test (tc_chain, test_calc_size);
 
   return s;
 }

diff --git a/win32/common/libgstreamer.def b/win32/common/libgstreamer.def
index caea348..d9007e9 100644 (file)
--- a/win32/common/libgstreamer.def
+++ b/win32/common/libgstreamer.def
@@ -146,6 +146,7 @@ EXPORTS
        gst_buffer_is_memory_range_writable
        gst_buffer_iterate_meta
        gst_buffer_iterate_meta_filtered
+       gst_buffer_list_calculate_size
        gst_buffer_list_copy_deep
        gst_buffer_list_foreach
        gst_buffer_list_get