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CHROMIUM: [media] rk3288-vpu: Add helper for encode plane sizes calculation

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Currently plane sizes calculation on encoder side is happening only in
vidioc_s_fmt() function, howerver as a prerequisite for further patch
adding further code which needs this operation, this patch adds a common
helper function, which performs this operation.

BUG=chrome-os-partner:41585
TEST=AppRTC loopback

Signed-off-by: Tomasz Figa <tfiga@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/289047
Reviewed-by: Pawel Osciak <posciak@chromium.org>

Change-Id: I6e5769667ae40b3fb5758ce9471b4ddd6866183f
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Yakir Yang <ykk@rock-chips.com>
This commit is contained in:
Tomasz Figa
2015-07-27 16:07:30 +09:00
committed by Huang, Tao
parent f7a1d19bf0
commit c097c475f4
1 changed files with 21 additions and 14 deletions
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35
drivers/media/platform/rk3288-vpu/rk3288_vpu_enc.c
View File

@@ -536,6 +536,25 @@ static int vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f)
return 0;
}
static void calculate_plane_sizes(struct rk3288_vpu_fmt *fmt,
unsigned int w, unsigned int h,
struct v4l2_pix_format_mplane *pix_fmt_mp)
{
int i;
for (i = 0; i < fmt->num_planes; ++i) {
pix_fmt_mp->plane_fmt[i].bytesperline = w * fmt->depth[i] / 8;
pix_fmt_mp->plane_fmt[i].sizeimage = h *
pix_fmt_mp->plane_fmt[i].bytesperline;
/*
* All of multiplanar formats we support have chroma
* planes subsampled by 2 vertically.
*/
if (i != 0)
pix_fmt_mp->plane_fmt[i].sizeimage /= 2;
}
}
static int vidioc_s_fmt(struct file *file, void *priv, struct v4l2_format *f)
{
struct v4l2_pix_format_mplane *pix_fmt_mp = &f->fmt.pix_mp;
@@ -543,7 +562,6 @@ static int vidioc_s_fmt(struct file *file, void *priv, struct v4l2_format *f)
unsigned int mb_width, mb_height;
struct rk3288_vpu_fmt *fmt;
int ret = 0;
int i;
vpu_debug_enter();
@@ -599,19 +617,8 @@ static int vidioc_s_fmt(struct file *file, void *priv, struct v4l2_format *f)
pix_fmt_mp->width, pix_fmt_mp->height,
mb_width, mb_height);
for (i = 0; i < fmt->num_planes; ++i) {
pix_fmt_mp->plane_fmt[i].bytesperline =
mb_width * MB_DIM * fmt->depth[i] / 8;
pix_fmt_mp->plane_fmt[i].sizeimage =
pix_fmt_mp->plane_fmt[i].bytesperline
* mb_height * MB_DIM;
/*
* All of multiplanar formats we support have chroma
* planes subsampled by 2.
*/
if (i != 0)
pix_fmt_mp->plane_fmt[i].sizeimage /= 2;
}
calculate_plane_sizes(fmt, mb_width * MB_DIM,
mb_height * MB_DIM, pix_fmt_mp);
/* Reset crop rectangle. */
ctx->src_crop.width = pix_fmt_mp->width;