You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
85 lines
3.2 KiB
Diff
85 lines
3.2 KiB
Diff
From 3905de52a7c815b6e2cf1915697ac5baaab34b85 Mon Sep 17 00:00:00 2001
|
|
From: Dave Stevenson <dave.stevenson@raspberrypi.org>
|
|
Date: Thu, 5 Jul 2018 16:17:03 +0100
|
|
Subject: [PATCH 406/454] staging: bcm2835-camera: Handle empty EOS buffers
|
|
whilst streaming
|
|
|
|
The change to mapping V4L2 to MMAL buffers 1:1 didn't handle
|
|
the condition we get with raw pixel buffers (eg YUV and RGB)
|
|
direct from the camera's stills port. That sends the pixel buffer
|
|
and then an empty buffer with the EOS flag set. The EOS buffer
|
|
wasn't handled and returned an error up the stack.
|
|
|
|
Handle the condition correctly by returning it to the component
|
|
if streaming, or returning with an error if stopping streaming.
|
|
|
|
Fixes: 9384167 "staging: bcm2835-camera: Remove V4L2/MMAL buffer remapping"
|
|
|
|
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
|
|
---
|
|
.../bcm2835-camera/bcm2835-camera.c | 21 +++++++++++--------
|
|
.../vc04_services/bcm2835-camera/mmal-vchiq.c | 5 +++--
|
|
2 files changed, 15 insertions(+), 11 deletions(-)
|
|
|
|
--- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
|
|
+++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
|
|
@@ -346,16 +346,13 @@ static void buffer_cb(struct vchiq_mmal_
|
|
|
|
if (length == 0) {
|
|
/* stream ended */
|
|
- if (buf) {
|
|
- /* this should only ever happen if the port is
|
|
- * disabled and there are buffers still queued
|
|
+ if (dev->capture.frame_count) {
|
|
+ /* empty buffer whilst capturing - expected to be an
|
|
+ * EOS, so grab another frame
|
|
*/
|
|
- vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
|
|
- pr_debug("Empty buffer");
|
|
- } else if (dev->capture.frame_count) {
|
|
- /* grab another frame */
|
|
if (is_capturing(dev)) {
|
|
- pr_debug("Grab another frame");
|
|
+ v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
|
|
+ "Grab another frame");
|
|
vchiq_mmal_port_parameter_set(
|
|
instance,
|
|
dev->capture.camera_port,
|
|
@@ -363,8 +360,14 @@ static void buffer_cb(struct vchiq_mmal_
|
|
&dev->capture.frame_count,
|
|
sizeof(dev->capture.frame_count));
|
|
}
|
|
+ if (vchiq_mmal_submit_buffer(instance, port, buf))
|
|
+ v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
|
|
+ "Failed to return EOS buffer");
|
|
} else {
|
|
- /* signal frame completion */
|
|
+ /* stopping streaming.
|
|
+ * return buffer, and signal frame completion
|
|
+ */
|
|
+ vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
|
|
complete(&dev->capture.frame_cmplt);
|
|
}
|
|
return;
|
|
--- a/drivers/staging/vc04_services/bcm2835-camera/mmal-vchiq.c
|
|
+++ b/drivers/staging/vc04_services/bcm2835-camera/mmal-vchiq.c
|
|
@@ -404,8 +404,6 @@ static int bulk_receive(struct vchiq_mma
|
|
|
|
/* store length */
|
|
msg_context->u.bulk.buffer_used = rd_len;
|
|
- msg_context->u.bulk.mmal_flags =
|
|
- msg->u.buffer_from_host.buffer_header.flags;
|
|
msg_context->u.bulk.dts = msg->u.buffer_from_host.buffer_header.dts;
|
|
msg_context->u.bulk.pts = msg->u.buffer_from_host.buffer_header.pts;
|
|
|
|
@@ -533,6 +531,9 @@ static void buffer_to_host_cb(struct vch
|
|
return;
|
|
}
|
|
|
|
+ msg_context->u.bulk.mmal_flags =
|
|
+ msg->u.buffer_from_host.buffer_header.flags;
|
|
+
|
|
if (msg->h.status != MMAL_MSG_STATUS_SUCCESS) {
|
|
/* message reception had an error */
|
|
pr_warn("error %d in reply\n", msg->h.status);
|