From: Dave Stevenson <dave.steven...@raspberrypi.org> H264 header come from VC with 0 timestamps, which means they get a strange timestamp when processed with VC/kernel start times, particularly if used with the inline header option. Remember the last frame timestamp and use that if set, or otherwise use the kernel start time.
Link: https://github.com/raspberrypi/linux/issues/1836 Signed-off-by: Dave Stevenson <dave.steven...@raspberrypi.org> --- .../staging/vc04_services/bcm2835-camera/bcm2835-camera.c | 14 ++++++++++++-- .../staging/vc04_services/bcm2835-camera/bcm2835-camera.h | 2 ++ 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c index dce6e6d..0c04815 100644 --- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c +++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c @@ -359,7 +359,9 @@ static void buffer_cb(struct vchiq_mmal_instance *instance, } } else { if (dev->capture.frame_count) { - if (dev->capture.vc_start_timestamp != -1 && pts) { + if (dev->capture.vc_start_timestamp != -1) { + buf->vb.vb2_buf.timestamp = ktime_get_ns(); + } else if (pts) { ktime_t timestamp; s64 runtime_us = pts - dev->capture.vc_start_timestamp; @@ -372,8 +374,15 @@ static void buffer_cb(struct vchiq_mmal_instance *instance, ktime_to_ns(timestamp)); buf->vb.vb2_buf.timestamp = ktime_to_ns(timestamp); } else { - buf->vb.vb2_buf.timestamp = ktime_get_ns(); + if (dev->capture.last_timestamp) { + buf->vb.vb2_buf.timestamp = + dev->capture.last_timestamp; + } else { + buf->vb.vb2_buf.timestamp = + ktime_to_ns(dev->capture.kernel_start_ts); + } } + dev->capture.last_timestamp = buf->vb.vb2_buf.timestamp; vb2_set_plane_payload(&buf->vb.vb2_buf, 0, length); vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE); @@ -541,6 +550,7 @@ static int start_streaming(struct vb2_queue *vq, unsigned int count) dev->capture.vc_start_timestamp, parameter_size); dev->capture.kernel_start_ts = ktime_get(); + dev->capture.last_timestamp = 0; /* enable the camera port */ dev->capture.port->cb_ctx = dev; diff --git a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.h b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.h index 2b5679e..09273b0 100644 --- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.h +++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.h @@ -90,6 +90,8 @@ struct bm2835_mmal_dev { s64 vc_start_timestamp; /* Kernel start timestamp for streaming */ ktime_t kernel_start_ts; + /* Timestamp of last frame */ + u64 last_timestamp; struct vchiq_mmal_port *port; /* port being used for capture */ /* camera port being used for capture */ -- 2.7.4 _______________________________________________ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
