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avdevice/dshow: check ff_dshow_pin_ConnectionMediaType() for failure

Maybe Fixes: CID1598557 Explicit null dereferenced

Sponsored-by: Sovereign Tech Fund
Reviewed-by: Roger Pack <rogerdpack@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 2c2e727088)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2024-05-27 01:52:27 +02:00
parent 2a0253d066
commit 672314f46f
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@ -1545,7 +1545,10 @@ dshow_add_device(AVFormatContext *avctx,
ctx->capture_filter[devtype]->stream_index = st->index;
ff_dshow_pin_ConnectionMediaType(ctx->capture_pin[devtype], &type);
if (ff_dshow_pin_ConnectionMediaType(ctx->capture_pin[devtype], &type) != S_OK) {
ret = AVERROR(EIO);
goto error;
}
fmt_info = dshow_get_format_info(&type);
if (!fmt_info) {
ret = AVERROR(EIO);