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Subject: v4l2-compliance: add timeout when waiting for event Author: Hans Verkuil <hverkuil-ci...@xs4all.nl> Date: Fri Jun 14 12:50:02 2019 +0200 The test for the stateful decoder that checks for a SOURCE_CHANGE event when you start streaming needs to wait for up to one second before calling dqevent. Otherwise the HW may not have had the chance yet to raise this event. So use select() to wait for an exception with a 1s timeout. Reported-by: Stanimir Varbanov <stanimir.varba...@linaro.org> Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl> utils/v4l2-compliance/v4l2-test-buffers.cpp | 7 +++++++ 1 file changed, 7 insertions(+) --- http://git.linuxtv.org/cgit.cgi/v4l-utils.git/commit/?id=f0a5b17d94e113527786621baaf19df91abd3567 diff --git a/utils/v4l2-compliance/v4l2-test-buffers.cpp b/utils/v4l2-compliance/v4l2-test-buffers.cpp index f078a4a474bf..bc5d219e4757 100644 --- a/utils/v4l2-compliance/v4l2-test-buffers.cpp +++ b/utils/v4l2-compliance/v4l2-test-buffers.cpp @@ -1318,9 +1318,16 @@ int testMmap(struct node *node, unsigned frame_count, enum poll_mode pollmode) if (node->is_m2m) { if (node->codec_mask & STATEFUL_DECODER) { int fd_flags = fcntl(node->g_fd(), F_GETFL); + struct timeval tv = { 1, 0 }; + fd_set efds; v4l2_event ev; fcntl(node->g_fd(), F_SETFL, fd_flags | O_NONBLOCK); + FD_ZERO(&efds); + FD_SET(node->g_fd(), &efds); + ret = select(node->g_fd() + 1, NULL, NULL, &efds, &tv); + fail_on_test(ret < 0); + fail_on_test(ret == 0); fail_on_test(node->dqevent(ev)); fcntl(node->g_fd(), F_SETFL, fd_flags); fail_on_test(ev.type != V4L2_EVENT_SOURCE_CHANGE); _______________________________________________ linuxtv-commits mailing list linuxtv-commits@linuxtv.org https://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
