From: Andriy Gelman <[email protected]>
V4L2 api can indicate that flushing of the capture buffers is completed
by setting the V4L2_BUF_FLAG_LAST flag.
Use guards because the flag was only defined in Linux v4.2.
Reference:
linux/Documentation/media/uapi/v4l/dev-decoder.rst
"The client must continue to handle both queues independently,
similarly to normal decode operation. This includes:
...
- queuing and dequeuing CAPTURE buffers, until a buffer marked with
the V4L2_BUF_FLAG_LAST flag is dequeued"
Signed-off-by: Andriy Gelman <[email protected]>
---
libavcodec/v4l2_context.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libavcodec/v4l2_context.c b/libavcodec/v4l2_context.c
index f0ecc18ebd..da802405e4 100644
--- a/libavcodec/v4l2_context.c
+++ b/libavcodec/v4l2_context.c
@@ -400,6 +400,10 @@ dequeue:
ctx->done = 1;
return NULL;
}
+#ifdef V4L2_BUF_FLAG_LAST
+ if (buf.flags & V4L2_BUF_FLAG_LAST)
+ ctx->done = 1;
+#endif
}
avbuf = &ctx->buffers[buf.index];
--
2.25.1
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