Commit 2e535ed5 authored by Muralidharan Karicheri's avatar Muralidharan Karicheri Committed by Mauro Carvalho Chehab
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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: default avatarMuralidharan Karicheri <m-karicheri2@ti.com>
Signed-off-by: default avatarHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 579e7d60

drivers/media/video/v4l2-common.c

+47 −0
Original line number Diff line number Diff line
@@ -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);

include/media/v4l2-common.h

+1 −1
Original line number Diff line number Diff line
@@ -212,5 +212,5 @@ void v4l_bound_align_image(unsigned int *w, unsigned int wmin, 
			   unsigned int *h, unsigned int hmin,

			   unsigned int hmax, unsigned int halign,

			   unsigned int salign);



int v4l_fill_dv_preset_info(u32 preset, struct v4l2_dv_enum_preset *info);

#endif /* V4L2_COMMON_H_ */