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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2012-03-21 15:03:25 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-05-15 23:10:20 +0400 |
| commit | 8929c96378a162263c8e3e547975e283dfd17e7f (patch) | |
| tree | e5fad4df40a1e6848b370e34e9d072058c44ccde /drivers/media/video/soc_mediabus.c | |
| parent | 4e0e620ce713893b2883522a16a71b5589e8e3db (diff) | |
| download | linux-8929c96378a162263c8e3e547975e283dfd17e7f.tar.xz | |
[media] soc-camera: Add soc_mbus_image_size
The function returns the minimum size of an image for a given number of
bytes per line (as per the V4L2 specification), width and format.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/soc_mediabus.c')
| -rw-r--r-- | drivers/media/video/soc_mediabus.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/media/video/soc_mediabus.c b/drivers/media/video/soc_mediabus.c index a7073142f9f1..89dce097a827 100644 --- a/drivers/media/video/soc_mediabus.c +++ b/drivers/media/video/soc_mediabus.c @@ -397,6 +397,24 @@ s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf) } EXPORT_SYMBOL(soc_mbus_bytes_per_line); +s32 soc_mbus_image_size(const struct soc_mbus_pixelfmt *mf, + u32 bytes_per_line, u32 height) +{ + if (mf->layout == SOC_MBUS_LAYOUT_PACKED) + return bytes_per_line * height; + + switch (mf->packing) { + case SOC_MBUS_PACKING_2X8_PADHI: + case SOC_MBUS_PACKING_2X8_PADLO: + return bytes_per_line * height * 2; + case SOC_MBUS_PACKING_1_5X8: + return bytes_per_line * height * 3 / 2; + default: + return -EINVAL; + } +} +EXPORT_SYMBOL(soc_mbus_image_size); + const struct soc_mbus_pixelfmt *soc_mbus_find_fmtdesc( enum v4l2_mbus_pixelcode code, const struct soc_mbus_lookup *lookup, |