diff options
| author | Alberto Panizzo <maramaopercheseimorto@gmail.com> | 2011-01-12 08:16:19 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-03-21 20:32:13 -0300 |
| commit | 48a3c77338d725d4976fa792d822eb940ce5c296 (patch) | |
| tree | 908ff25858dbed62cb546139463507d471b5e609 | |
| parent | 7fdbd85bce033e2d0f74e5d326ab43906653cb81 (diff) | |
[media] V4L: soc_mediabus: add a method to obtain the number of samples per pixel
Add a function to calculate the number of samples on the media-bus,
required to retrieve one pixel of a certain format.
Signed-off-by: Alberto Panizzo <maramaopercheseimorto@gmail.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/video/soc_mediabus.c | 14 | ||||
| -rw-r--r-- | include/media/soc_mediabus.h | 1 |
2 files changed, 15 insertions, 0 deletions
diff --git a/drivers/media/video/soc_mediabus.c b/drivers/media/video/soc_mediabus.c index 91391214c68..73b4138709e 100644 --- a/drivers/media/video/soc_mediabus.c +++ b/drivers/media/video/soc_mediabus.c @@ -132,6 +132,20 @@ static const struct soc_mbus_pixelfmt mbus_fmt[] = { }, }; +int soc_mbus_samples_per_pixel(const struct soc_mbus_pixelfmt *mf) +{ + switch (mf->packing) { + case SOC_MBUS_PACKING_NONE: + case SOC_MBUS_PACKING_EXTEND16: + return 1; + case SOC_MBUS_PACKING_2X8_PADHI: + case SOC_MBUS_PACKING_2X8_PADLO: + return 2; + } + return -EINVAL; +} +EXPORT_SYMBOL(soc_mbus_samples_per_pixel); + s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf) { switch (mf->packing) { diff --git a/include/media/soc_mediabus.h b/include/media/soc_mediabus.h index 037cd7be001..f5522b3f175 100644 --- a/include/media/soc_mediabus.h +++ b/include/media/soc_mediabus.h @@ -61,5 +61,6 @@ struct soc_mbus_pixelfmt { const struct soc_mbus_pixelfmt *soc_mbus_get_fmtdesc( enum v4l2_mbus_pixelcode code); s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf); +int soc_mbus_samples_per_pixel(const struct soc_mbus_pixelfmt *mf); #endif |