On 06/02/2011 03:31 PM, Ronald S. Bultje wrote:
Hi,
On Thu, Jun 2, 2011 at 3:29 PM, John Stebbins<[email protected]> wrote:
Fair enough. There appear to be some cases remaining where av_malloc is
called with a size of 0. I'll set a break point and find out where the
request is coming from.
Thanks, if you can just show me a backtrace (I just run commands and
set a if (size == 0) abort() in av_malloc), I'll gladly accept the
fix.
The first occurrence of the problem that I find is in vc1_decode_init. avctx->mb_stride gets set (from avctx->width)
when ff_msmpeg4_decode_init is called. But at the point ff_msmpeg4_decode_init is called avctx->width hasn't been set
yet (i.e. it is 0). width gets set in vc1_decode_sequence_header which is called after ff_msmpeg4_decode_init. Since
width is 0, mb_stride is 0 and av_malloc gets called with 0.
I don't know exactly how to untangle this because I don't know the dependencies between these initialization functions.
Can anyone make any suggestions?
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