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authorHans Verkuil <hverkuil-cisco@xs4all.nl>2019-10-11 12:32:44 +0300
committerMauro Carvalho Chehab <mchehab+samsung@kernel.org>2019-10-21 13:42:01 +0300
commitf07602ac388723233e9e3c5a05b54baf34e0a3e9 (patch)
tree10013d1eb5e989459c56b8f31911cf1690d4fcd6 /include/media
parentbef41d93aac64b54c3008ca6170bec54f85784f5 (diff)
downloadlinux-f07602ac388723233e9e3c5a05b54baf34e0a3e9.tar.xz
media: v4l2-mem2mem: add new_frame detection
Drivers that support VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF typically want to know if a new frame is started (i.e. the first slice is about to be processed). Add a new_frame bool to v4l2_m2m_ctx and set it accordingly. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'include/media')
-rw-r--r--include/media/v4l2-mem2mem.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/media/v4l2-mem2mem.h b/include/media/v4l2-mem2mem.h
index 3d9e48ed8817..1d85e24791e4 100644
--- a/include/media/v4l2-mem2mem.h
+++ b/include/media/v4l2-mem2mem.h
@@ -75,6 +75,11 @@ struct v4l2_m2m_queue_ctx {
* struct v4l2_m2m_ctx - Memory to memory context structure
*
* @q_lock: struct &mutex lock
+ * @new_frame: valid in the device_run callback: if true, then this
+ * starts a new frame; if false, then this is a new slice
+ * for an existing frame. This is always true unless
+ * V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF is set, which
+ * indicates slicing support.
* @m2m_dev: opaque pointer to the internal data to handle M2M context
* @cap_q_ctx: Capture (output to memory) queue context
* @out_q_ctx: Output (input from memory) queue context
@@ -91,6 +96,8 @@ struct v4l2_m2m_ctx {
/* optional cap/out vb2 queues lock */
struct mutex *q_lock;
+ bool new_frame;
+
/* internal use only */
struct v4l2_m2m_dev *m2m_dev;