Hey Yunfei,
On 03.04.2024 17:30, Yunfei Dong wrote:
The sizeimage of each plane are calculated the same way for 8bit and
s/The sizeimage of each plane are/The sizeimage for each plane is/
10bit bitstream. Need to enlarge the sizeimage with simeimage*5/4 for
10bit bitstream when try and set fmt.
s/bitstream/bistreams/
s/Need to enlarge the sizeimage with simeimage*5/4 for 10bit bitstream when try and set fmt./
Scale up the sizeimage by 25% for 10-bit bitstreams in try_fmt./
Fixes: 9d86be9bda6c ("media: mediatek: vcodec: Add driver to support 10bit")
Signed-off-by: Yunfei Dong <yunfei.dong@xxxxxxxxxxxx>
---
.../mediatek/vcodec/decoder/mtk_vcodec_dec.c | 47 ++++++++++++++-----
1 file changed, 34 insertions(+), 13 deletions(-)
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
index 9107707de6c4..45209894f1fe 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
@@ -259,6 +259,7 @@ static int vidioc_try_fmt(struct mtk_vcodec_dec_ctx *ctx, struct v4l2_format *f,
pix_fmt_mp->num_planes = 1;
pix_fmt_mp->plane_fmt[0].bytesperline = 0;
} else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
+ unsigned int dram_y, dram_c, dram_y_10bit, dram_c_10bit;
int tmp_w, tmp_h;
/*
@@ -280,22 +281,42 @@ static int vidioc_try_fmt(struct mtk_vcodec_dec_ctx *ctx, struct v4l2_format *f,
(pix_fmt_mp->height + 64) <= frmsize->max_height)
pix_fmt_mp->height += 64;
- mtk_v4l2_vdec_dbg(0, ctx,
- "before resize wxh=%dx%d, after resize wxh=%dx%d, sizeimage=%d",
- tmp_w, tmp_h, pix_fmt_mp->width, pix_fmt_mp->height,
- pix_fmt_mp->width * pix_fmt_mp->height);
+ dram_y = pix_fmt_mp->width * pix_fmt_mp->height;
+ dram_c = dram_y / 2;
+
+ dram_y_10bit = dram_y * 5 / 4;
+ dram_c_10bit = dram_y_10bit / 2;
I'd skip the two 10 bit variables (dram_y_10bit & dram_c_10bit) and
instead do it like this:
```
dram_stride = pix_fmt_mp->width;
if (ctx->is_10bit_bitstream)
dram_stride = dram_stride * 5 / 4;
dram_y = dram_stride * pix_fmt_mp->height;
dram_c = dram_y / 2;
if (pix_fmt_mp->num_planes == 1) {
pix_fmt_mp->plane_fmt[0].bytesperline = dram_stride;
pix_fmt_mp->plane_fmt[0].sizeimage = dram_y + dram_c;
} else {
pix_fmt_mp->plane_fmt[0].bytesperline = dram_stride;
pix_fmt_mp->plane_fmt[1].bytesperline = dram_stride;
pix_fmt_mp->plane_fmt[0].sizeimage = dram_y;
pix_fmt_mp->plane_fmt[1].sizeimage = dram_c;
...
}
```
Also, why do you call all the variables dram?
Please this isn't tested, but shows the general direction to repeat a
lot less code.
Greetings,
Sebastian
pix_fmt_mp->num_planes = fmt->num_planes;
- pix_fmt_mp->plane_fmt[0].sizeimage =
- pix_fmt_mp->width * pix_fmt_mp->height;
- pix_fmt_mp->plane_fmt[0].bytesperline = pix_fmt_mp->width;
-
- if (pix_fmt_mp->num_planes == 2) {
- pix_fmt_mp->plane_fmt[1].sizeimage =
- (pix_fmt_mp->width * pix_fmt_mp->height) / 2;
- pix_fmt_mp->plane_fmt[1].bytesperline =
- pix_fmt_mp->width;
+ if (pix_fmt_mp->num_planes == 1) {
+ if (ctx->is_10bit_bitstream) {
+ pix_fmt_mp->plane_fmt[0].bytesperline = pix_fmt_mp->width * 5 / 4;
+ pix_fmt_mp->plane_fmt[0].sizeimage = dram_y_10bit + dram_c_10bit;
+ } else {
+ pix_fmt_mp->plane_fmt[0].bytesperline = pix_fmt_mp->width;
+ pix_fmt_mp->plane_fmt[0].sizeimage = dram_y + dram_c;
+ }
+ } else {
+ if (ctx->is_10bit_bitstream) {
+ pix_fmt_mp->plane_fmt[0].bytesperline = pix_fmt_mp->width * 5 / 4;
+ pix_fmt_mp->plane_fmt[1].bytesperline = pix_fmt_mp->width * 5 / 4;
+
+ pix_fmt_mp->plane_fmt[0].sizeimage = dram_y_10bit;
+ pix_fmt_mp->plane_fmt[1].sizeimage = dram_c_10bit;
+ } else {
+ pix_fmt_mp->plane_fmt[0].bytesperline = pix_fmt_mp->width;
+ pix_fmt_mp->plane_fmt[1].bytesperline = pix_fmt_mp->width;
+
+ pix_fmt_mp->plane_fmt[0].sizeimage = dram_y;
+ pix_fmt_mp->plane_fmt[1].sizeimage = dram_c;
+ }
}
+
+ mtk_v4l2_vdec_dbg(0, ctx,
+ "before resize:%dx%d, after resize:%dx%d, sizeimage=0x%x_0x%x",
+ tmp_w, tmp_h, pix_fmt_mp->width, pix_fmt_mp->height,
+ pix_fmt_mp->plane_fmt[0].sizeimage,
+ pix_fmt_mp->plane_fmt[1].sizeimage);
}
pix_fmt_mp->flags = 0;
--
2.25.1
