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GstBuffer: size-related optimization

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Avoid calling generic function when it's possible to directly
return/get sizes
This commit is contained in:
Edward Hervey 2018-11-21 16:14:58 +01:00 committed by Edward Hervey
parent e3d2eb1f16
commit 3b71c4a4e7
1 changed files with 26 additions and 9 deletions
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35
gst/gstbuffer.c
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@ -603,7 +603,7 @@ gst_buffer_copy_into (GstBuffer * dest, GstBuffer * src,
for (i = 0; i < len && left > 0; i++) {
GstMemory *mem = GST_BUFFER_MEM_PTR (src, i);
bsize = gst_memory_get_sizes (mem, NULL, NULL);
bsize = mem->size;
if (bsize <= skip) {
/* don't copy buffer */
@ -1165,11 +1165,8 @@ _get_mapped (GstBuffer * buffer, guint idx, GstMapInfo * info,
GstMemory *
gst_buffer_peek_memory (GstBuffer * buffer, guint idx)
{
guint len;
g_return_val_if_fail (GST_IS_BUFFER (buffer), NULL);
len = GST_BUFFER_MEM_LEN (buffer);
g_return_val_if_fail (idx < len, NULL);
g_return_val_if_fail (idx < GST_BUFFER_MEM_LEN (buffer), NULL);
return GST_BUFFER_MEM_PTR (buffer, idx);
}
@ -1322,7 +1319,8 @@ gst_buffer_remove_memory (GstBuffer * buffer, guint idx)
void
gst_buffer_remove_all_memory (GstBuffer * buffer)
{
gst_buffer_remove_memory_range (buffer, 0, -1);
if (GST_BUFFER_MEM_LEN (buffer))
gst_buffer_remove_memory_range (buffer, 0, -1);
}
/**
@ -1397,7 +1395,7 @@ gst_buffer_find_memory (GstBuffer * buffer, gsize offset, gsize size,
gsize s;
mem = GST_BUFFER_MEM_PTR (buffer, i);
s = gst_memory_get_sizes (mem, NULL, NULL);
s = mem->size;
if (s <= offset) {
/* block before offset, or empty block, skip */
@ -1523,7 +1521,16 @@ gst_buffer_get_sizes (GstBuffer * buffer, gsize * offset, gsize * maxsize)
gsize
gst_buffer_get_size (GstBuffer * buffer)
{
return gst_buffer_get_sizes_range (buffer, 0, -1, NULL, NULL);
guint i;
gsize size, len;
g_return_val_if_fail (GST_IS_BUFFER (buffer), 0);
/* FAST PATH */
len = GST_BUFFER_MEM_LEN (buffer);
for (i = 0, size = 0; i < len; i++)
size += GST_BUFFER_MEM_PTR (buffer, i)->size;
return size;
}
/**
@ -1565,6 +1572,16 @@ gst_buffer_get_sizes_range (GstBuffer * buffer, guint idx, gint length,
/* common case */
mem = GST_BUFFER_MEM_PTR (buffer, idx);
size = gst_memory_get_sizes (mem, offset, maxsize);
} else if (offset == NULL && maxsize == NULL) {
/* FAST PATH ! */
guint i, end;
size = 0;
end = idx + length;
for (i = idx; i < end; i++) {
mem = GST_BUFFER_MEM_PTR (buffer, i);
size += mem->size;
}
} else {
guint i, end;
gsize extra, offs;
@ -1682,7 +1699,7 @@ gst_buffer_resize_range (GstBuffer * buffer, guint idx, gint length,
gsize left, noffs;
mem = GST_BUFFER_MEM_PTR (buffer, i);
bsize = gst_memory_get_sizes (mem, NULL, NULL);
bsize = mem->size;
noffs = 0;
/* last buffer always gets resized to the remaining size */