V4L/DVB (8176): pvrusb2: Update video_gop_size
When switching video standard, ensure that video GOP size remains
appropriately configured.
Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
index de0f41b..a5217a2 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
@@ -2456,18 +2456,35 @@
/* Handle some required side effects when the video standard is
changed.... */
if (hdw->std_dirty) {
- /* Rewrite the vertical resolution to be appropriate to the
- video standard that has been selected. */
int nvres;
+ int gop_size;
if (hdw->std_mask_cur & V4L2_STD_525_60) {
nvres = 480;
+ gop_size = 15;
} else {
nvres = 576;
+ gop_size = 12;
}
+ /* Rewrite the vertical resolution to be appropriate to the
+ video standard that has been selected. */
if (nvres != hdw->res_ver_val) {
hdw->res_ver_val = nvres;
hdw->res_ver_dirty = !0;
}
+ /* Rewrite the GOP size to be appropriate to the video
+ standard that has been selected. */
+ if (gop_size != hdw->enc_ctl_state.video_gop_size) {
+ struct v4l2_ext_controls cs;
+ struct v4l2_ext_control c1;
+ memset(&cs, 0, sizeof(cs));
+ memset(&c1, 0, sizeof(c1));
+ cs.controls = &c1;
+ cs.count = 1;
+ c1.id = V4L2_CID_MPEG_VIDEO_GOP_SIZE;
+ c1.value = gop_size;
+ cx2341x_ext_ctrls(&hdw->enc_ctl_state, 0, &cs,
+ VIDIOC_S_EXT_CTRLS);
+ }
}
if (hdw->input_dirty && hdw->state_pathway_ok &&
