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Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0496-media-v4l2-mem2mem-add-new_frame-detection.patch')
-rw-r--r--target/linux/bcm27xx/patches-5.4/950-0496-media-v4l2-mem2mem-add-new_frame-detection.patch69
1 files changed, 69 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0496-media-v4l2-mem2mem-add-new_frame-detection.patch b/target/linux/bcm27xx/patches-5.4/950-0496-media-v4l2-mem2mem-add-new_frame-detection.patch
new file mode 100644
index 0000000000..3c777922f1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0496-media-v4l2-mem2mem-add-new_frame-detection.patch
@@ -0,0 +1,69 @@
+From 1d55acac432983ad8301f5430c42ac549b4b4c6f Mon Sep 17 00:00:00 2001
+From: Hans Verkuil <hverkuil-cisco@xs4all.nl>
+Date: Fri, 11 Oct 2019 06:32:44 -0300
+Subject: [PATCH] media: v4l2-mem2mem: add new_frame detection
+
+Commit f07602ac388723233e9e3c5a05b54baf34e0a3e9 upstream.
+
+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>
+---
+ drivers/media/v4l2-core/v4l2-mem2mem.c | 11 +++++++++--
+ include/media/v4l2-mem2mem.h | 7 +++++++
+ 2 files changed, 16 insertions(+), 2 deletions(-)
+
+--- a/drivers/media/v4l2-core/v4l2-mem2mem.c
++++ b/drivers/media/v4l2-core/v4l2-mem2mem.c
+@@ -319,8 +319,10 @@ static void __v4l2_m2m_try_queue(struct
+ goto job_unlock;
+ }
+
+- if (src && dst &&
+- dst->is_held && dst->vb2_buf.copied_timestamp &&
++ m2m_ctx->new_frame = true;
++
++ if (src && dst && dst->is_held &&
++ dst->vb2_buf.copied_timestamp &&
+ dst->vb2_buf.timestamp != src->vb2_buf.timestamp) {
+ dst->is_held = false;
+ v4l2_m2m_dst_buf_remove(m2m_ctx);
+@@ -333,6 +335,11 @@ static void __v4l2_m2m_try_queue(struct
+ }
+ }
+
++ if (src && dst && (m2m_ctx->cap_q_ctx.q.subsystem_flags &
++ VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF))
++ m2m_ctx->new_frame = !dst->vb2_buf.copied_timestamp ||
++ dst->vb2_buf.timestamp != src->vb2_buf.timestamp;
++
+ if (m2m_dev->m2m_ops->job_ready
+ && (!m2m_dev->m2m_ops->job_ready(m2m_ctx->priv))) {
+ dprintk("Driver not ready\n");
+--- 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;
+