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950-0466-staging-bcm2835-codec-Add-support-for-setting-S_PARM.patch
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950-0466-staging-bcm2835-codec-Add-support-for-setting-S_PARM.patch
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From 67c1f9dd0253a1175f77e801b19bd9d923225f9c Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.org>
Date: Fri, 10 May 2019 14:13:11 +0100
Subject: [PATCH] staging: bcm2835-codec: Add support for setting
S_PARM and G_PARM
Video encode can use the frame rate for rate control calculations,
therefore plumb it through from V4L2's [S|G]_PARM ioctl.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
---
.../bcm2835-codec/bcm2835-v4l2-codec.c | 52 +++++++++++++++++--
1 file changed, 48 insertions(+), 4 deletions(-)
--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
@@ -447,6 +447,8 @@ struct bcm2835_codec_ctx {
/* Source and destination queue data */
struct bcm2835_codec_q_data q_data[2];
s32 bitrate;
+ unsigned int framerate_num;
+ unsigned int framerate_denom;
bool aborting;
int num_ip_buffers;
@@ -610,8 +612,8 @@ static void setup_mmal_port_format(struc
port->es.video.height = q_data->height;
port->es.video.crop.width = q_data->crop_width;
port->es.video.crop.height = q_data->crop_height;
- port->es.video.frame_rate.num = 0;
- port->es.video.frame_rate.den = 1;
+ port->es.video.frame_rate.num = ctx->framerate_num;
+ port->es.video.frame_rate.den = ctx->framerate_denom;
} else {
/* Compressed format - leave resolution as 0 for decode */
if (ctx->dev->role == DECODE) {
@@ -625,9 +627,9 @@ static void setup_mmal_port_format(struc
port->es.video.crop.width = q_data->crop_width;
port->es.video.crop.height = q_data->crop_height;
port->format.bitrate = ctx->bitrate;
+ port->es.video.frame_rate.num = ctx->framerate_num;
+ port->es.video.frame_rate.den = ctx->framerate_denom;
}
- port->es.video.frame_rate.num = 0;
- port->es.video.frame_rate.den = 1;
}
port->es.video.crop.x = 0;
port->es.video.crop.y = 0;
@@ -1361,6 +1363,41 @@ static int vidioc_s_selection(struct fil
return 0;
}
+static int vidioc_s_parm(struct file *file, void *priv,
+ struct v4l2_streamparm *parm)
+{
+ struct bcm2835_codec_ctx *ctx = file2ctx(file);
+
+ if (parm->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
+ return -EINVAL;
+
+ ctx->framerate_num =
+ parm->parm.output.timeperframe.denominator;
+ ctx->framerate_denom =
+ parm->parm.output.timeperframe.numerator;
+
+ parm->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
+
+ return 0;
+}
+
+static int vidioc_g_parm(struct file *file, void *priv,
+ struct v4l2_streamparm *parm)
+{
+ struct bcm2835_codec_ctx *ctx = file2ctx(file);
+
+ if (parm->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
+ return -EINVAL;
+
+ parm->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
+ parm->parm.output.timeperframe.denominator =
+ ctx->framerate_num;
+ parm->parm.output.timeperframe.numerator =
+ ctx->framerate_denom;
+
+ return 0;
+}
+
static int vidioc_subscribe_evt(struct v4l2_fh *fh,
const struct v4l2_event_subscription *sub)
{
@@ -1725,6 +1762,9 @@ static const struct v4l2_ioctl_ops bcm28
.vidioc_g_selection = vidioc_g_selection,
.vidioc_s_selection = vidioc_s_selection,
+ .vidioc_g_parm = vidioc_g_parm,
+ .vidioc_s_parm = vidioc_s_parm,
+
.vidioc_subscribe_event = vidioc_subscribe_evt,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
@@ -2546,6 +2586,8 @@ static int bcm2835_codec_create(struct p
case DECODE:
v4l2_disable_ioctl(vfd, VIDIOC_ENCODER_CMD);
v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD);
+ v4l2_disable_ioctl(vfd, VIDIOC_S_PARM);
+ v4l2_disable_ioctl(vfd, VIDIOC_G_PARM);
video_nr = decode_video_nr;
break;
case ENCODE:
@@ -2558,6 +2600,8 @@ static int bcm2835_codec_create(struct p
v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD);
v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD);
v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD);
+ v4l2_disable_ioctl(vfd, VIDIOC_S_PARM);
+ v4l2_disable_ioctl(vfd, VIDIOC_G_PARM);
video_nr = isp_video_nr;
break;
default: