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authorMuralidharan Karicheri2009-12-10 04:39:47 -0300
committerMauro Carvalho Chehab2009-12-16 00:18:47 -0200
commit2e535ed5a16b8cc23301f3d26cfd49f3091aadcc (patch)
tree5542313815668b4d8a42059abff6912244327d82 /drivers/media
parent579e7d60ba0035228aadad69eb2ffeb138c51311 (diff)
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.c47
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);