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| author | Muralidharan Karicheri <m-karicheri2@ti.com> | 2009-12-10 04:39:47 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-12-16 00:18:47 -0200 |
| commit | 2e535ed5a16b8cc23301f3d26cfd49f3091aadcc (patch) | |
| tree | 5542313815668b4d8a42059abff6912244327d82 /drivers/media | |
| parent | 579e7d60ba0035228aadad69eb2ffeb138c51311 (diff) | |
| download | linux-2e535ed5a16b8cc23301f3d26cfd49f3091aadcc.tar.gz linux-2e535ed5a16b8cc23301f3d26cfd49f3091aadcc.tar.bz2 linux-2e535ed5a16b8cc23301f3d26cfd49f3091aadcc.zip | |
V4L/DVB (13618): v4l2: Adding helper function to get dv preset description
This patch adds a helper function to get description of a digital
video preset added by the video timing API. This will be useful for drivers
implementing the above API.
Signed-off-by: Muralidharan Karicheri <m-karicheri2@ti.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/video/v4l2-common.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c index e8e5affbabce..36b5cb86fb57 100644 --- a/drivers/media/video/v4l2-common.c +++ b/drivers/media/video/v4l2-common.c @@ -1024,3 +1024,50 @@ void v4l_bound_align_image(u32 *w, unsigned int wmin, unsigned int wmax, } } EXPORT_SYMBOL_GPL(v4l_bound_align_image); + +/** + * v4l_fill_dv_preset_info - fill description of a digital video preset + * @preset - preset value + * @info - pointer to struct v4l2_dv_enum_preset + * + * drivers can use this helper function to fill description of dv preset + * in info. + */ +int v4l_fill_dv_preset_info(u32 preset, struct v4l2_dv_enum_preset *info) +{ + static const struct v4l2_dv_preset_info { + u16 width; + u16 height; + const char *name; + } dv_presets[] = { + { 0, 0, "Invalid" }, /* V4L2_DV_INVALID */ + { 720, 480, "480p@59.94" }, /* V4L2_DV_480P59_94 */ + { 720, 576, "576p@50" }, /* V4L2_DV_576P50 */ + { 1280, 720, "720p@24" }, /* V4L2_DV_720P24 */ + { 1280, 720, "720p@25" }, /* V4L2_DV_720P25 */ + { 1280, 720, "720p@30" }, /* V4L2_DV_720P30 */ + { 1280, 720, "720p@50" }, /* V4L2_DV_720P50 */ + { 1280, 720, "720p@59.94" }, /* V4L2_DV_720P59_94 */ + { 1280, 720, "720p@60" }, /* V4L2_DV_720P60 */ + { 1920, 1080, "1080i@29.97" }, /* V4L2_DV_1080I29_97 */ + { 1920, 1080, "1080i@30" }, /* V4L2_DV_1080I30 */ + { 1920, 1080, "1080i@25" }, /* V4L2_DV_1080I25 */ + { 1920, 1080, "1080i@50" }, /* V4L2_DV_1080I50 */ + { 1920, 1080, "1080i@60" }, /* V4L2_DV_1080I60 */ + { 1920, 1080, "1080p@24" }, /* V4L2_DV_1080P24 */ + { 1920, 1080, "1080p@25" }, /* V4L2_DV_1080P25 */ + { 1920, 1080, "1080p@30" }, /* V4L2_DV_1080P30 */ + { 1920, 1080, "1080p@50" }, /* V4L2_DV_1080P50 */ + { 1920, 1080, "1080p@60" }, /* V4L2_DV_1080P60 */ + }; + + if (info == NULL || preset >= ARRAY_SIZE(dv_presets)) + return -EINVAL; + + info->preset = preset; + info->width = dv_presets[preset].width; + info->height = dv_presets[preset].height; + strlcpy(info->name, dv_presets[preset].name, sizeof(info->name)); + return 0; +} +EXPORT_SYMBOL_GPL(v4l_fill_dv_preset_info); |