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avdevice/dshow: check ff_dshow_pin_ConnectionMediaType() for failure

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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 365c58cfab
commit 04abb63b7c
1 changed files with 4 additions and 1 deletions
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5
libavdevice/dshow.c
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@@ -1546,7 +1546,10 @@ 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);