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GstBuffer: Inline fast-path for merged memory

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This commit is contained in:
Edward Hervey 2018-11-21 16:13:48 +01:00 committed by Edward Hervey
parent 6c2dfe5ebe
commit e3d2eb1f16
1 changed files with 57 additions and 50 deletions
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33
gst/gstbuffer.c
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@ -234,23 +234,14 @@ _is_span (GstMemory ** mem, gsize len, gsize * poffset, GstMemory ** parent)
}
static GstMemory *
_get_merged_memory (GstBuffer * buffer, guint idx, guint length)
_actual_merged_memory (GstBuffer * buffer, guint idx, guint length)
{
GstMemory **mem, *result = NULL;
GST_CAT_LOG (GST_CAT_BUFFER, "buffer %p, idx %u, length %u", buffer, idx,
length);
mem = GST_BUFFER_MEM_ARRAY (buffer);
if (G_UNLIKELY (length == 0)) {
result = NULL;
} else if (G_LIKELY (length == 1)) {
result = gst_memory_ref (mem[idx]);
} else {
GstMemory *parent = NULL;
gsize size, poffset = 0;
mem = GST_BUFFER_MEM_ARRAY (buffer);
size = gst_buffer_get_sizes_range (buffer, idx, length, NULL, NULL);
if (G_UNLIKELY (_is_span (mem + idx, length, &poffset, &parent))) {
@ -296,10 +287,26 @@ _get_merged_memory (GstBuffer * buffer, guint idx, guint length)
}
gst_memory_unmap (result, &dinfo);
}
}
return result;
}
static inline GstMemory *
_get_merged_memory (GstBuffer * buffer, guint idx, guint length)
{
GST_CAT_LOG (GST_CAT_BUFFER, "buffer %p, idx %u, length %u", buffer, idx,
length);
if (G_UNLIKELY (length == 0))
return NULL;
if (G_LIKELY (length == 1))
return gst_memory_ref (GST_BUFFER_MEM_PTR (buffer, idx));
return _actual_merged_memory (buffer, idx, length);
}
static void
_replace_memory (GstBuffer * buffer, guint len, guint idx, guint length,
GstMemory * mem)