diff options
Diffstat (limited to 'include/media/v4l2-common.h')
| -rw-r--r-- | include/media/v4l2-common.h | 47 |
1 files changed, 38 insertions, 9 deletions
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h index 82715645617b..0a41bbecf3d3 100644 --- a/include/media/v4l2-common.h +++ b/include/media/v4l2-common.h @@ -362,15 +362,6 @@ __v4l2_find_nearest_size(const void *array, size_t array_size, size_t height_offset, s32 width, s32 height); /** - * v4l2_get_timestamp - helper routine to get a timestamp to be used when - * filling streaming metadata. Internally, it uses ktime_get_ts(), - * which is the recommended way to get it. - * - * @tv: pointer to &struct timeval to be filled. - */ -void v4l2_get_timestamp(struct timeval *tv); - -/** * v4l2_g_parm_cap - helper routine for vidioc_g_parm to fill this in by * calling the g_frame_interval op of the given subdev. It only works * for V4L2_BUF_TYPE_VIDEO_CAPTURE(_MPLANE), hence the _cap in the @@ -396,4 +387,42 @@ int v4l2_g_parm_cap(struct video_device *vdev, int v4l2_s_parm_cap(struct video_device *vdev, struct v4l2_subdev *sd, struct v4l2_streamparm *a); +/* Compare two v4l2_fract structs */ +#define V4L2_FRACT_COMPARE(a, OP, b) \ + ((u64)(a).numerator * (b).denominator OP \ + (u64)(b).numerator * (a).denominator) + +/* ------------------------------------------------------------------------- */ + +/* Pixel format and FourCC helpers */ + +/** + * struct v4l2_format_info - information about a V4L2 format + * @format: 4CC format identifier (V4L2_PIX_FMT_*) + * @mem_planes: Number of memory planes, which includes the alpha plane (1 to 4). + * @comp_planes: Number of component planes, which includes the alpha plane (1 to 4). + * @bpp: Array of per-plane bytes per pixel + * @hdiv: Horizontal chroma subsampling factor + * @vdiv: Vertical chroma subsampling factor + * @block_w: Per-plane macroblock pixel width (optional) + * @block_h: Per-plane macroblock pixel height (optional) + */ +struct v4l2_format_info { + u32 format; + u8 mem_planes; + u8 comp_planes; + u8 bpp[4]; + u8 hdiv; + u8 vdiv; + u8 block_w[4]; + u8 block_h[4]; +}; + +const struct v4l2_format_info *v4l2_format_info(u32 format); + +int v4l2_fill_pixfmt(struct v4l2_pix_format *pixfmt, int pixelformat, + int width, int height); +int v4l2_fill_pixfmt_mp(struct v4l2_pix_format_mplane *pixfmt, int pixelformat, + int width, int height); + #endif /* V4L2_COMMON_H_ */ |