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pngenc: validate input buffer size

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Just for safety; of course such mismatch represents a bug in another element.
This commit is contained in:
René Stadler 2011-10-16 19:44:27 +02:00 committed by René Stadler
parent 9eb55c3d8f
commit 7e390c4635
1 changed files with 8 additions and 0 deletions
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8
ext/libpng/gstpngenc.c
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@ -271,6 +271,14 @@ gst_pngenc_chain (GstPad * pad, GstBuffer * buf)
GST_DEBUG_OBJECT (pngenc, "BEGINNING");
if (G_UNLIKELY (GST_BUFFER_SIZE (buf) < pngenc->height * pngenc->stride)) {
gst_buffer_unref (buf);
GST_ELEMENT_ERROR (pngenc, STREAM, FORMAT, (NULL),
("Provided input buffer is too small, caps problem?"));
ret = GST_FLOW_ERROR;
goto done;
}
/* initialize png struct stuff */
pngenc->png_struct_ptr = png_create_write_struct (PNG_LIBPNG_VER_STRING,
(png_voidp) NULL, user_error_fn, user_warning_fn);