[-,v1] V4L - Adding helper function to get dv preset description

Commit Message

Murali Karicheri Nov. 20, 2009, 10:51 p.m. UTC

None

Patch

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@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;
+	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_ */