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| author | Tony K Nadackal <tony.kn@samsung.com> | 2017-06-30 16:15:45 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-07-26 14:31:51 +0200 |
| commit | accf9b2c1f8326d916576f4eef4ceaad3bab9bf4 (patch) | |
| tree | fad171401e2d9e0673ec5741954fb54d22e30f2e /drivers/media/platform/s5p-jpeg | |
| parent | media: s5p-jpeg: Split s5p_jpeg_parse_hdr() (diff) | |
| download | linux-accf9b2c1f8326d916576f4eef4ceaad3bab9bf4.tar.xz linux-accf9b2c1f8326d916576f4eef4ceaad3bab9bf4.zip | |
media: s5p-jpeg: Decode 4:1:1 chroma subsampling format
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>
Acked-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/platform/s5p-jpeg')
| -rw-r--r-- | drivers/media/platform/s5p-jpeg/jpeg-core.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c index 21ba3b4f397c..46d92037bf20 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; } |