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media: allegro: handle dependency of bitrate and bitrate_peak 

The peak bitrate must not be smaller than the configured bitrate. Update
the other control whenever one of the controls changes to reflect this
dependency.

Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Michael Tretter 2020-03-16 16:26:34 +01:00 committed by Mauro Carvalho Chehab
parent d71f12225d
commit c59de02d10
1 changed files with 41 additions and 8 deletions
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49
drivers/staging/media/allegro-dvt/allegro-core.c
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@ -211,9 +211,11 @@ struct allegro_channel {
struct v4l2_ctrl *mpeg_video_h264_p_frame_qp;
struct v4l2_ctrl *mpeg_video_h264_b_frame_qp;
struct v4l2_ctrl *mpeg_video_frame_rc_enable;
struct v4l2_ctrl *mpeg_video_bitrate_mode;
struct v4l2_ctrl *mpeg_video_bitrate;
struct v4l2_ctrl *mpeg_video_bitrate_peak;
struct { /* video bitrate mode control cluster */
struct v4l2_ctrl *mpeg_video_bitrate_mode;
struct v4l2_ctrl *mpeg_video_bitrate;
struct v4l2_ctrl *mpeg_video_bitrate_peak;
};
struct v4l2_ctrl *mpeg_video_cpb_size;
struct v4l2_ctrl *mpeg_video_gop_size;
@ -2404,6 +2406,34 @@ static int allegro_clamp_qp(struct allegro_channel *channel,
return allegro_clamp_qp(channel, next_ctrl);
}
static int allegro_clamp_bitrate(struct allegro_channel *channel,
struct v4l2_ctrl *ctrl)
{
struct v4l2_ctrl *ctrl_bitrate = channel->mpeg_video_bitrate;
struct v4l2_ctrl *ctrl_bitrate_peak = channel->mpeg_video_bitrate_peak;
if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR &&
ctrl_bitrate_peak->val < ctrl_bitrate->val)
ctrl_bitrate_peak->val = ctrl_bitrate->val;
return 0;
}
static int allegro_try_ctrl(struct v4l2_ctrl *ctrl)
{
struct allegro_channel *channel = container_of(ctrl->handler,
struct allegro_channel,
ctrl_handler);
switch (ctrl->id) {
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
allegro_clamp_bitrate(channel, ctrl);
break;
}
return 0;
}
static int allegro_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct allegro_channel *channel = container_of(ctrl->handler,
@ -2421,11 +2451,11 @@ static int allegro_s_ctrl(struct v4l2_ctrl *ctrl)
case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE:
channel->frame_rc_enable = ctrl->val;
break;
case V4L2_CID_MPEG_VIDEO_BITRATE:
channel->bitrate = ctrl->val;
break;
case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
channel->bitrate_peak = ctrl->val;
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
channel->bitrate = channel->mpeg_video_bitrate->val;
channel->bitrate_peak = channel->mpeg_video_bitrate_peak->val;
v4l2_ctrl_activate(channel->mpeg_video_bitrate_peak,
ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR);
break;
case V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE:
channel->cpb_size = ctrl->val;
@ -2444,6 +2474,7 @@ static int allegro_s_ctrl(struct v4l2_ctrl *ctrl)
}
static const struct v4l2_ctrl_ops allegro_ctrl_ops = {
.try_ctrl = allegro_try_ctrl,
.s_ctrl = allegro_s_ctrl,
};
@ -2549,6 +2580,8 @@ static int allegro_open(struct file *file)
channel->fh.ctrl_handler = handler;
v4l2_ctrl_cluster(3, &channel->mpeg_video_bitrate_mode);
channel->mcu_channel_id = -1;
channel->user_id = -1;