diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0197-staging-bcm2835-codec-Convert-V4L2-nsec-timestamps-t.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0197-staging-bcm2835-codec-Convert-V4L2-nsec-timestamps-t.patch | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0197-staging-bcm2835-codec-Convert-V4L2-nsec-timestamps-t.patch b/target/linux/bcm27xx/patches-5.4/950-0197-staging-bcm2835-codec-Convert-V4L2-nsec-timestamps-t.patch new file mode 100644 index 0000000000..481ca484d5 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0197-staging-bcm2835-codec-Convert-V4L2-nsec-timestamps-t.patch @@ -0,0 +1,46 @@ +From 19a2ab86f47213575ebcde216505623bc65e3918 Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.org> +Date: Fri, 10 May 2019 14:11:58 +0100 +Subject: [PATCH] staging: bcm2835-codec: Convert V4L2 nsec timestamps + to MMAL usec + +V4L2 uses nsecs, whilst MMAL uses usecs, but the code wasn't converting +between them. This upsets video encode rate control. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> +--- + .../vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c | 9 +++++++-- + 1 file changed, 7 insertions(+), 2 deletions(-) + +--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c ++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c +@@ -823,7 +823,8 @@ static void op_buffer_cb(struct vchiq_mm + vb2->flags |= V4L2_BUF_FLAG_LAST; + } + +- vb2->vb2_buf.timestamp = mmal_buf->pts; ++ /* vb2 timestamps in nsecs, mmal in usecs */ ++ vb2->vb2_buf.timestamp = mmal_buf->pts * 1000; + + vb2_set_plane_payload(&vb2->vb2_buf, 0, mmal_buf->length); + if (mmal_buf->mmal_flags & MMAL_BUFFER_HEADER_FLAG_KEYFRAME) +@@ -847,6 +848,7 @@ static void op_buffer_cb(struct vchiq_mm + static void vb2_to_mmal_buffer(struct m2m_mmal_buffer *buf, + struct vb2_v4l2_buffer *vb2) + { ++ u64 pts; + buf->mmal.mmal_flags = 0; + if (vb2->flags & V4L2_BUF_FLAG_KEYFRAME) + buf->mmal.mmal_flags |= MMAL_BUFFER_HEADER_FLAG_KEYFRAME; +@@ -869,7 +871,10 @@ static void vb2_to_mmal_buffer(struct m2 + if (!buf->mmal.length || vb2->flags & V4L2_BUF_FLAG_LAST) + buf->mmal.mmal_flags |= MMAL_BUFFER_HEADER_FLAG_EOS; + +- buf->mmal.pts = vb2->vb2_buf.timestamp; ++ /* vb2 timestamps in nsecs, mmal in usecs */ ++ pts = vb2->vb2_buf.timestamp; ++ do_div(pts, 1000); ++ buf->mmal.pts = pts; + buf->mmal.dts = MMAL_TIME_UNKNOWN; + } + |