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| author | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-11-08 13:36:01 +0000 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-11-09 09:12:09 +0000 |
| commit | 731a651f202374ec20e963d76577528ab01df124 (patch) | |
| tree | 37902f04201426bbbf31be6b79a254735b4a1765 | |
| parent | 6ead632c5d4de09e480e086f730b552b7ad81a1b (diff) | |
| download | v4l-utils-731a651f202374ec20e963d76577528ab01df124.tar.gz | |
v4l2grab: avoid the risc of having sizeimage == 0
In the eventual case where sizeimage is zero, userptr will fail.
So, add a default.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
| -rw-r--r-- | contrib/test/v4l2grab.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/contrib/test/v4l2grab.c b/contrib/test/v4l2grab.c index de5fd8c0..eb8ba6c5 100644 --- a/contrib/test/v4l2grab.c +++ b/contrib/test/v4l2grab.c @@ -674,6 +674,10 @@ static int userptr_capture(int fd, int n_frames, unsigned char *out_buf, char *o exit(EXIT_FAILURE); } + /* Some compressed formats could return zero */ + if (!fmt->fmt.pix.sizeimage) + fmt->fmt.pix.sizeimage = fmt->fmt.pix.width * fmt->fmt.pix.height * 3; + for (n_buffers = 0; n_buffers < req.count; ++n_buffers) { buffers[n_buffers].length = fmt->fmt.pix.sizeimage; buffers[n_buffers].start = calloc(1, fmt->fmt.pix.sizeimage); |