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authorHans Verkuil <hverkuil-cisco@xs4all.nl>2018-11-13 03:52:18 -0500
committerMauro Carvalho Chehab <mchehab+samsung@kernel.org>2019-01-07 13:15:36 -0500
commite2d8ffe2e76028457759988ba6216fd13eeea01b (patch)
treef82891b23fd68cbde4670c099674bbc7b001fd35 /include/media
parent5f5b4fa522e630cfa154c59ae7649b5568913f96 (diff)
downloadlinux-e2d8ffe2e76028457759988ba6216fd13eeea01b.tar.bz2
media: v4l2-mem2mem: add v4l2_m2m_buf_copy_data helper function
Memory-to-memory devices should copy various parts of struct v4l2_buffer from the output buffer to the capture buffer. Add a helper function that does that to simplify the driver code. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com> Reviewed-by: Alexandre Courbot <acourbot@chromium.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'include/media')
-rw-r--r--include/media/v4l2-mem2mem.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/include/media/v4l2-mem2mem.h b/include/media/v4l2-mem2mem.h
index 5467264771ec..43e447dcf69d 100644
--- a/include/media/v4l2-mem2mem.h
+++ b/include/media/v4l2-mem2mem.h
@@ -622,6 +622,26 @@ v4l2_m2m_dst_buf_remove_by_idx(struct v4l2_m2m_ctx *m2m_ctx, unsigned int idx)
return v4l2_m2m_buf_remove_by_idx(&m2m_ctx->cap_q_ctx, idx);
}
+/**
+ * v4l2_m2m_buf_copy_data() - copy buffer data from the output buffer to the
+ * capture buffer
+ *
+ * @out_vb: the output buffer that is the source of the data.
+ * @cap_vb: the capture buffer that will receive the data.
+ * @copy_frame_flags: copy the KEY/B/PFRAME flags as well.
+ *
+ * This helper function copies the timestamp, timecode (if the TIMECODE
+ * buffer flag was set), field and the TIMECODE, KEYFRAME, BFRAME, PFRAME
+ * and TSTAMP_SRC_MASK flags from @out_vb to @cap_vb.
+ *
+ * If @copy_frame_flags is false, then the KEYFRAME, BFRAME and PFRAME
+ * flags are not copied. This is typically needed for encoders that
+ * set this bits explicitly.
+ */
+void v4l2_m2m_buf_copy_data(const struct vb2_v4l2_buffer *out_vb,
+ struct vb2_v4l2_buffer *cap_vb,
+ bool copy_frame_flags);
+
/* v4l2 request helper */
void v4l2_m2m_request_queue(struct media_request *req);