From: Muralidharan Karicheri <m-karicheri2@xxxxxx>
Updated based on review comments
This patch adds a helper function to get description of a digital
video preset added by the video timing API. This will be usefull for drivers
implementing the above API.
Signed-off-by: Muralidharan Karicheri <m-karicheri2@xxxxxx>
NOTE: depends on the patch that adds video timing API.
---
Applies to V4L-DVB linux-next branch
drivers/media/video/v4l2-common.c | 43 +++++++++++++++++++++++++++++++++++++
include/media/v4l2-common.h | 7 ++++++
2 files changed, 50 insertions(+), 0 deletions(-)
diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c
index f5a93ae..8b13d8e 100644
--- a/drivers/media/video/v4l2-common.c
+++ b/drivers/media/video/v4l2-common.c
@@ -1015,3 +1015,46 @@ 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 dv_presets[] = {
+ {0, 0, "Invalid"},/* V4L2_DV_INVALID */
+ {720, 480, "480p@xxxxx"},/* 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@xxxxx"},/* V4L2_DV_720P59_94 */
+ {1280, 720, "720p@60"},/* V4L2_DV_720P60 */
+ {1920, 1080, "1080i@xxxxx"},/* 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;
+ strcpy(info->name, dv_presets[preset].name);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(v4l_fill_dv_preset_info);
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h
index 1c25b10..6ec9986 100644
--- a/include/media/v4l2-common.h
+++ b/include/media/v4l2-common.h
@@ -213,4 +213,11 @@ void v4l_bound_align_image(unsigned int *w, unsigned int wmin,
unsigned int hmax, unsigned int halign,
unsigned int salign);
+struct v4l2_dv_preset_info {
+ u16 width;
+ u16 height;
+ const char *name;
+};
+
+int v4l_fill_dv_preset_info(u32 preset, struct v4l2_dv_enum_preset *info);
#endif /* V4L2_COMMON_H_ */
--
1.6.0.4
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