From: Thierry Escande <thierry.escande@collabora.com>
To: Andrzej Pietrasiewicz <andrzej.p@samsung.com>,
Jacek Anaszewski <jacek.anaszewski@gmail.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v3 6/8] [media] s5p-jpeg: Decode 4:1:1 chroma subsampling format
Date: Tue, 27 Jun 2017 18:08:52 +0200 [thread overview]
Message-ID: <1498579734-1594-7-git-send-email-thierry.escande@collabora.com> (raw)
In-Reply-To: <1498579734-1594-1-git-send-email-thierry.escande@collabora.com>
From: Tony K Nadackal <tony.kn@samsung.com>
This patch adds support for decoding 4:1:1 chroma subsampling in the
jpeg header parsing function.
Signed-off-by: Tony K Nadackal <tony.kn@samsung.com>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
---
drivers/media/platform/s5p-jpeg/jpeg-core.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c
index 0783809..cca0fb8 100644
--- a/drivers/media/platform/s5p-jpeg/jpeg-core.c
+++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c
@@ -1099,6 +1099,8 @@ static void skip(struct s5p_jpeg_buffer *buf, long len)
static bool s5p_jpeg_subsampling_decode(struct s5p_jpeg_ctx *ctx,
unsigned int subsampling)
{
+ unsigned int version;
+
switch (subsampling) {
case 0x11:
ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444;
@@ -1112,6 +1114,19 @@ static bool s5p_jpeg_subsampling_decode(struct s5p_jpeg_ctx *ctx,
case 0x33:
ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY;
break;
+ case 0x41:
+ /*
+ * 4:1:1 subsampling only supported by 3250, 5420, and 5433
+ * variants
+ */
+ version = ctx->jpeg->variant->version;
+ if (version != SJPEG_EXYNOS3250 &&
+ version != SJPEG_EXYNOS5420 &&
+ version != SJPEG_EXYNOS5433)
+ return false;
+
+ ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_411;
+ break;
default:
return false;
}
--
2.7.4
next prev parent reply other threads:[~2017-06-27 16:09 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20170627160906epcas4p369a67fdb1b8f6898a1f1b4ddb7927995@epcas4p3.samsung.com>
2017-06-27 16:08 ` [PATCH v3 0/8] [media] s5p-jpeg: Various fixes and improvements Thierry Escande
2017-06-27 16:08 ` [PATCH v3 1/8] [media] s5p-jpeg: Call jpeg_bound_align_image after qbuf Thierry Escande
2017-06-29 12:03 ` Andrzej Pietrasiewicz
2017-06-27 16:08 ` [PATCH v3 2/8] [media] s5p-jpeg: Correct WARN_ON statement for checking subsampling Thierry Escande
2017-06-29 12:03 ` Andrzej Pietrasiewicz
2017-06-27 16:08 ` [PATCH v3 3/8] [media] s5p-jpeg: Handle parsing error in s5p_jpeg_parse_hdr() Thierry Escande
2017-06-29 12:04 ` Andrzej Pietrasiewicz
2017-06-27 16:08 ` [PATCH v3 4/8] [media] s5p-jpeg: Don't use temporary structure in s5p_jpeg_buf_queue Thierry Escande
2017-06-29 12:04 ` Andrzej Pietrasiewicz
2017-06-29 20:12 ` Jacek Anaszewski
2017-06-27 16:08 ` [PATCH v3 5/8] [media] s5p-jpeg: Split s5p_jpeg_parse_hdr() Thierry Escande
2017-06-29 12:04 ` Andrzej Pietrasiewicz
2017-06-27 16:08 ` Thierry Escande [this message]
2017-06-29 12:04 ` [PATCH v3 6/8] [media] s5p-jpeg: Decode 4:1:1 chroma subsampling format Andrzej Pietrasiewicz
2017-06-27 16:08 ` [PATCH v3 7/8] [media] s5p-jpeg: Add support for resolution change event Thierry Escande
2017-06-29 12:04 ` Andrzej Pietrasiewicz
2017-06-27 16:08 ` [PATCH v3 8/8] [media] s5p-jpeg: Add stream error handling for Exynos5420 Thierry Escande
2017-06-29 12:05 ` Andrzej Pietrasiewicz
2017-06-29 12:02 ` [PATCH v3 0/8] [media] s5p-jpeg: Various fixes and improvements Andrzej Pietrasiewicz
2017-06-29 20:13 ` Jacek Anaszewski
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