The patch number 14774 was added via Douglas Schilling Landgraf
<[email protected]>
to http://linuxtv.org/hg/v4l-dvb master development tree.
Kernel patches in this development tree may be modified to be backward
compatible with older kernels. Compatibility modifications will be
removed before inclusion into the mainstream Kernel
If anyone has any objections, please let us know by sending a message to:
Linux Media Mailing List <[email protected]>
------
From: Pawel Osciak <[email protected]>
Add a new ERROR flag for DQBUF after recoverable streaming errors
This flag is intended to indicate streaming errors, which might have
resulted in corrupted video data in the buffer, but the buffer can still
be reused and streaming may continue.
Setting this flag and returning 0 is different from returning EIO. The
latter should now indicate more serious (unrecoverable) errors.
This patch also solves a problem with the ioctl handling code in
vl42-ioctl.c, which does not copy buffer identification data back to the
userspace when EIO is returned, so there is no way for applications
to discover on which buffer the operation failed in such cases.
Priority: normal
Signed-off-by: Pawel Osciak <[email protected]>
Signed-off-by: Kyungmin Park <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Douglas Schilling Landgraf <[email protected]>
---
linux/include/linux/videodev2.h | 2 ++
1 file changed, 2 insertions(+)
diff -r 15d03a105b95 -r 6ee39e9cad68 linux/include/linux/videodev2.h
--- a/linux/include/linux/videodev2.h Wed May 12 00:27:12 2010 -0300
+++ b/linux/include/linux/videodev2.h Wed May 12 00:28:09 2010 -0300
@@ -542,6 +542,8 @@
#define V4L2_BUF_FLAG_KEYFRAME 0x0008 /* Image is a keyframe (I-frame) */
#define V4L2_BUF_FLAG_PFRAME 0x0010 /* Image is a P-frame */
#define V4L2_BUF_FLAG_BFRAME 0x0020 /* Image is a B-frame */
+/* Buffer is ready, but the data contained within is corrupted. */
+#define V4L2_BUF_FLAG_ERROR 0x0040
#define V4L2_BUF_FLAG_TIMECODE 0x0100 /* timecode field is valid */
#define V4L2_BUF_FLAG_INPUT 0x0200 /* input field is valid */
---
Patch is available at:
http://linuxtv.org/hg/v4l-dvb/rev/6ee39e9cad684221dcd3e35547b8c7e7fbeecae1
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