diff options
| author | Thierry Escande <thierry.escande@collabora.com> | 2017-06-30 10:15:44 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-07-26 08:31:10 -0400 |
| commit | c8d36a80352efd00088ec0e693636c5ac8ca94e8 (patch) | |
| tree | d5481d4525711947a9d8973d7d93c4904d80e2da /drivers/media/platform/s5p-jpeg/jpeg-core.c | |
| parent | 14a2de14dc0619bf926c56cd12e29e0245d12abc (diff) | |
| download | linux-c8d36a80352efd00088ec0e693636c5ac8ca94e8.tar.bz2 | |
media: s5p-jpeg: Split s5p_jpeg_parse_hdr()
This patch moves the subsampling value decoding read from the JPEG
header into its own function. This new function is called
s5p_jpeg_subsampling_decode() and returns true if it successfully
decodes the subsampling value, false otherwise.
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/jpeg-core.c')
| -rw-r--r-- | drivers/media/platform/s5p-jpeg/jpeg-core.c | 42 |
1 files changed, 24 insertions, 18 deletions
diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c index e9ff9773ad32..21ba3b4f397c 100644 --- a/drivers/media/platform/s5p-jpeg/jpeg-core.c +++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c @@ -1096,6 +1096,29 @@ static void skip(struct s5p_jpeg_buffer *buf, long len) get_byte(buf); } +static bool s5p_jpeg_subsampling_decode(struct s5p_jpeg_ctx *ctx, + unsigned int subsampling) +{ + switch (subsampling) { + case 0x11: + ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444; + break; + case 0x21: + ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_422; + break; + case 0x22: + ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_420; + break; + case 0x33: + ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY; + break; + default: + return false; + } + + return true; +} + static bool s5p_jpeg_parse_hdr(struct s5p_jpeg_q_data *result, unsigned long buffer, unsigned long size, struct s5p_jpeg_ctx *ctx) @@ -1207,26 +1230,9 @@ static bool s5p_jpeg_parse_hdr(struct s5p_jpeg_q_data *result, } } - if (notfound || !sos) + if (notfound || !sos || !s5p_jpeg_subsampling_decode(ctx, subsampling)) return false; - switch (subsampling) { - case 0x11: - ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444; - break; - case 0x21: - ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_422; - break; - case 0x22: - ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_420; - break; - case 0x33: - ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY; - break; - default: - return false; - } - result->w = width; result->h = height; result->sos = sos; |