lkml.org 
[lkml]   [2021]   [Jul]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v6 03/14] media: mtk-vcodec: vdec: clamp OUTPUT resolution to hardware limits
Date
Calling S_FMT or TRY_FMT on the OUTPUT queue should adjust the
resolution to the limits supported by the hardware. Until now this was
only done on the CAPTURE queue, which could make clients believe that
unsupported resolutions can be used when they set the coded size on the
OUTPUT queue.

In the case of the stateless decoder, the problem was even bigger since
subsequently calling G_FMT on the CAPTURE queue would result in the
unclamped resolution being returned, further inducing the client into
error.

Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
---
drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
index 1a633b485a69..16e057f73789 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
@@ -649,19 +649,17 @@ static int vidioc_try_fmt(struct v4l2_format *f,

pix_fmt_mp->field = V4L2_FIELD_NONE;

+ pix_fmt_mp->width =
+ clamp(pix_fmt_mp->width, MTK_VDEC_MIN_W, MTK_VDEC_MAX_W);
+ pix_fmt_mp->height =
+ clamp(pix_fmt_mp->height, MTK_VDEC_MIN_H, MTK_VDEC_MAX_H);
+
if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
pix_fmt_mp->num_planes = 1;
pix_fmt_mp->plane_fmt[0].bytesperline = 0;
} else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
int tmp_w, tmp_h;

- pix_fmt_mp->height = clamp(pix_fmt_mp->height,
- MTK_VDEC_MIN_H,
- MTK_VDEC_MAX_H);
- pix_fmt_mp->width = clamp(pix_fmt_mp->width,
- MTK_VDEC_MIN_W,
- MTK_VDEC_MAX_W);
-
/*
* Find next closer width align 64, heign align 64, size align
* 64 rectangle
--
2.32.0.93.g670b81a890-goog
\
 
 \ /
  Last update: 2021-07-05 07:34    [W:0.092 / U:0.716 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site