linux-kernel - [PATCH v4 1/5] media: meson: vdec: align stride on 32 bytes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200206084152.7070-2-narmstrong@baylibre.com>
Date:   Thu,  6 Feb 2020 09:41:48 +0100
From:   Neil Armstrong <narmstrong@...libre.com>
To:     mchehab@...nel.org, hans.verkuil@...co.com
Cc:     Neil Armstrong <narmstrong@...libre.com>,
        linux-media@...r.kernel.org, linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v4 1/5] media: meson: vdec: align stride on 32 bytes

The HEVC/VP9 aligns the plane stride on 32, so align the planes stride
for all codecs to 32 to satisfy HEVC/VP9 decoding using the "HEVC" HW.

This fixes VP9 decoding of streams with following (not limited) widths:
- 264
 -288
- 350
- 352
- 472
- 480
- 528
- 600
- 720
- 800
- 848
- 1440

Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
---
 drivers/staging/media/meson/vdec/vdec.c         | 10 +++++-----
 drivers/staging/media/meson/vdec/vdec_helpers.c |  4 ++--
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/staging/media/meson/vdec/vdec.c b/drivers/staging/media/meson/vdec/vdec.c
index 92f0258868b1..bfca4c82aa56 100644
--- a/drivers/staging/media/meson/vdec/vdec.c
+++ b/drivers/staging/media/meson/vdec/vdec.c
@@ -528,20 +528,20 @@ vdec_try_fmt_common(struct amvdec_session *sess, u32 size,
 		memset(pfmt[1].reserved, 0, sizeof(pfmt[1].reserved));
 		if (pixmp->pixelformat == V4L2_PIX_FMT_NV12M) {
 			pfmt[0].sizeimage = output_size;
-			pfmt[0].bytesperline = ALIGN(pixmp->width, 64);
+			pfmt[0].bytesperline = ALIGN(pixmp->width, 32);
 
 			pfmt[1].sizeimage = output_size / 2;
-			pfmt[1].bytesperline = ALIGN(pixmp->width, 64);
+			pfmt[1].bytesperline = ALIGN(pixmp->width, 32);
 			pixmp->num_planes = 2;
 		} else if (pixmp->pixelformat == V4L2_PIX_FMT_YUV420M) {
 			pfmt[0].sizeimage = output_size;
-			pfmt[0].bytesperline = ALIGN(pixmp->width, 64);
+			pfmt[0].bytesperline = ALIGN(pixmp->width, 32);
 
 			pfmt[1].sizeimage = output_size / 4;
-			pfmt[1].bytesperline = ALIGN(pixmp->width, 64) / 2;
+			pfmt[1].bytesperline = ALIGN(pixmp->width, 32) / 2;
 
 			pfmt[2].sizeimage = output_size / 2;
-			pfmt[2].bytesperline = ALIGN(pixmp->width, 64) / 2;
+			pfmt[2].bytesperline = ALIGN(pixmp->width, 32) / 2;
 			pixmp->num_planes = 3;
 		}
 	}
diff --git a/drivers/staging/media/meson/vdec/vdec_helpers.c b/drivers/staging/media/meson/vdec/vdec_helpers.c
index a4970ec1bf2e..3f7929c54dc6 100644
--- a/drivers/staging/media/meson/vdec/vdec_helpers.c
+++ b/drivers/staging/media/meson/vdec/vdec_helpers.c
@@ -154,8 +154,8 @@ int amvdec_set_canvases(struct amvdec_session *sess,
 {
 	struct v4l2_m2m_buffer *buf;
 	u32 pixfmt = sess->pixfmt_cap;
-	u32 width = ALIGN(sess->width, 64);
-	u32 height = ALIGN(sess->height, 64);
+	u32 width = ALIGN(sess->width, 32);
+	u32 height = ALIGN(sess->height, 32);
 	u32 reg_cur = reg_base[0];
 	u32 reg_num_cur = 0;
 	u32 reg_base_cur = 0;
-- 
2.22.0