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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: Muralidharan Karicheri <m-karicheri2@ti.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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2 changed files with 48 additions and 1 deletions
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@ -1024,3 +1024,50 @@ void v4l_bound_align_image(u32 *w, unsigned int wmin, unsigned int wmax,
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}
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}
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EXPORT_SYMBOL_GPL(v4l_bound_align_image);
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/**
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* v4l_fill_dv_preset_info - fill description of a digital video preset
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* @preset - preset value
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* @info - pointer to struct v4l2_dv_enum_preset
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*
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* drivers can use this helper function to fill description of dv preset
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* in info.
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*/
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int v4l_fill_dv_preset_info(u32 preset, struct v4l2_dv_enum_preset *info)
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{
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static const struct v4l2_dv_preset_info {
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u16 width;
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u16 height;
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const char *name;
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} dv_presets[] = {
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{ 0, 0, "Invalid" }, /* V4L2_DV_INVALID */
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{ 720, 480, "480p@59.94" }, /* V4L2_DV_480P59_94 */
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{ 720, 576, "576p@50" }, /* V4L2_DV_576P50 */
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{ 1280, 720, "720p@24" }, /* V4L2_DV_720P24 */
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{ 1280, 720, "720p@25" }, /* V4L2_DV_720P25 */
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{ 1280, 720, "720p@30" }, /* V4L2_DV_720P30 */
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{ 1280, 720, "720p@50" }, /* V4L2_DV_720P50 */
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{ 1280, 720, "720p@59.94" }, /* V4L2_DV_720P59_94 */
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{ 1280, 720, "720p@60" }, /* V4L2_DV_720P60 */
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{ 1920, 1080, "1080i@29.97" }, /* V4L2_DV_1080I29_97 */
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{ 1920, 1080, "1080i@30" }, /* V4L2_DV_1080I30 */
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{ 1920, 1080, "1080i@25" }, /* V4L2_DV_1080I25 */
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{ 1920, 1080, "1080i@50" }, /* V4L2_DV_1080I50 */
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{ 1920, 1080, "1080i@60" }, /* V4L2_DV_1080I60 */
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{ 1920, 1080, "1080p@24" }, /* V4L2_DV_1080P24 */
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{ 1920, 1080, "1080p@25" }, /* V4L2_DV_1080P25 */
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{ 1920, 1080, "1080p@30" }, /* V4L2_DV_1080P30 */
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{ 1920, 1080, "1080p@50" }, /* V4L2_DV_1080P50 */
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{ 1920, 1080, "1080p@60" }, /* V4L2_DV_1080P60 */
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};
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if (info == NULL || preset >= ARRAY_SIZE(dv_presets))
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return -EINVAL;
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info->preset = preset;
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info->width = dv_presets[preset].width;
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info->height = dv_presets[preset].height;
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strlcpy(info->name, dv_presets[preset].name, sizeof(info->name));
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return 0;
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}
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EXPORT_SYMBOL_GPL(v4l_fill_dv_preset_info);
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@ -212,5 +212,5 @@ void v4l_bound_align_image(unsigned int *w, unsigned int wmin,
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unsigned int *h, unsigned int hmin,
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unsigned int hmax, unsigned int halign,
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unsigned int salign);
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int v4l_fill_dv_preset_info(u32 preset, struct v4l2_dv_enum_preset *info);
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#endif /* V4L2_COMMON_H_ */
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