korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-15 06:55:13 +08:00
Code Issues Packages Projects Releases Wiki Activity
c3224f4147
linux/drivers/media/v4l2-core/v4l2-common.c
Jacopo Mondi b74c77d3d6 media: v4l2-common: Add Y210 and Y216 format info 
According to the formats description in videodev2.h Y210, Y212 and Y216
are YCbCr packed formats. For each Y2xx format, xx bits of valid data
occupy the MSBs of the 16 bit components, and 16-xx bits of zero padding
occupy the LSBs.

The Y210 and Y216 formats are missing an entry in the v4l2_format_info[]
table. Add it.

Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
2024-04-08 13:48:19 +02:00

637 lines
28 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Video for Linux Two
*
* A generic video device interface for the LINUX operating system
* using a set of device structures/vectors for low level operations.
*
* This file replaces the videodev.c file that comes with the
* regular kernel distribution.
*
* Author: Bill Dirks <bill@thedirks.org>
* based on code by Alan Cox, <alan@cymru.net>
*/
/*
* Video capture interface for Linux
*
* A generic video device interface for the LINUX operating system
* using a set of device structures/vectors for low level operations.
*
* Author: Alan Cox, <alan@lxorguk.ukuu.org.uk>
*
* Fixes:
*/
/*
* Video4linux 1/2 integration by Justin Schoeman
* <justin@suntiger.ee.up.ac.za>
* 2.4 PROCFS support ported from 2.4 kernels by
* Iñaki García Etxebarria <garetxe@euskalnet.net>
* Makefile fix by "W. Michael Petullo" <mike@flyn.org>
* 2.4 devfs support ported from 2.4 kernels by
* Dan Merillat <dan@merillat.org>
* Added Gerd Knorrs v4l1 enhancements (Justin Schoeman)
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/uaccess.h>
#include <asm/io.h>
#include <asm/div64.h>
#include <media/v4l2-common.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <linux/videodev2.h>
/*
*
* V 4 L 2 D R I V E R H E L P E R A P I
*
*/
/*
* Video Standard Operations (contributed by Michael Schimek)
*/
/* Helper functions for control handling */
/* Fill in a struct v4l2_queryctrl */
int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 _min, s32 _max, s32 _step, s32 _def)
{
const char *name;
s64 min = _min;
s64 max = _max;
u64 step = _step;
s64 def = _def;
v4l2_ctrl_fill(qctrl->id, &name, &qctrl->type,
&min, &max, &step, &def, &qctrl->flags);
if (name == NULL)
return -EINVAL;
qctrl->minimum = min;
qctrl->maximum = max;
qctrl->step = step;
qctrl->default_value = def;
qctrl->reserved[0] = qctrl->reserved[1] = 0;
strscpy(qctrl->name, name, sizeof(qctrl->name));
return 0;
}
EXPORT_SYMBOL(v4l2_ctrl_query_fill);
/* Clamp x to be between min and max, aligned to a multiple of 2^align. min
* and max don't have to be aligned, but there must be at least one valid
* value. E.g., min=17,max=31,align=4 is not allowed as there are no multiples
* of 16 between 17 and 31. */
static unsigned int clamp_align(unsigned int x, unsigned int min,
unsigned int max, unsigned int align)
{
/* Bits that must be zero to be aligned */
unsigned int mask = ~((1 << align) - 1);
/* Clamp to aligned min and max */
x = clamp(x, (min + ~mask) & mask, max & mask);
/* Round to nearest aligned value */
if (align)
x = (x + (1 << (align - 1))) & mask;
return x;
}
static unsigned int clamp_roundup(unsigned int x, unsigned int min,
unsigned int max, unsigned int alignment)
{
x = clamp(x, min, max);
if (alignment)
x = round_up(x, alignment);
return x;
}
void v4l_bound_align_image(u32 *w, unsigned int wmin, unsigned int wmax,
unsigned int walign,
u32 *h, unsigned int hmin, unsigned int hmax,
unsigned int halign, unsigned int salign)
{
*w = clamp_align(*w, wmin, wmax, walign);
*h = clamp_align(*h, hmin, hmax, halign);
/* Usually we don't need to align the size and are done now. */
if (!salign)
return;
/* How much alignment do we have? */
walign = __ffs(*w);
halign = __ffs(*h);
/* Enough to satisfy the image alignment? */
if (walign + halign < salign) {
/* Max walign where there is still a valid width */
unsigned int wmaxa = __fls(wmax ^ (wmin - 1));
/* Max halign where there is still a valid height */
unsigned int hmaxa = __fls(hmax ^ (hmin - 1));
/* up the smaller alignment until we have enough */
do {
if (halign >= hmaxa ||
(walign <= halign && walign < wmaxa)) {
*w = clamp_align(*w, wmin, wmax, walign + 1);
walign = __ffs(*w);
} else {
*h = clamp_align(*h, hmin, hmax, halign + 1);
halign = __ffs(*h);
}
} while (halign + walign < salign);
}
}
EXPORT_SYMBOL_GPL(v4l_bound_align_image);
const void *
__v4l2_find_nearest_size(const void *array, size_t array_size,
size_t entry_size, size_t width_offset,
size_t height_offset, s32 width, s32 height)
{
u32 error, min_error = U32_MAX;
const void *best = NULL;
unsigned int i;
if (!array)
return NULL;
for (i = 0; i < array_size; i++, array += entry_size) {
const u32 *entry_width = array + width_offset;
const u32 *entry_height = array + height_offset;
error = abs(*entry_width - width) + abs(*entry_height - height);
if (error > min_error)
continue;
min_error = error;
best = array;
if (!error)
break;
}
return best;
}
EXPORT_SYMBOL_GPL(__v4l2_find_nearest_size);
int v4l2_g_parm_cap(struct video_device *vdev,
struct v4l2_subdev *sd, struct v4l2_streamparm *a)
{
struct v4l2_subdev_frame_interval ival = { 0 };
int ret;
if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
return -EINVAL;
if (vdev->device_caps & V4L2_CAP_READWRITE)
a->parm.capture.readbuffers = 2;
if (v4l2_subdev_has_op(sd, pad, get_frame_interval))
a->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
ret = v4l2_subdev_call_state_active(sd, pad, get_frame_interval, &ival);
if (!ret)
a->parm.capture.timeperframe = ival.interval;
return ret;
}
EXPORT_SYMBOL_GPL(v4l2_g_parm_cap);
int v4l2_s_parm_cap(struct video_device *vdev,
struct v4l2_subdev *sd, struct v4l2_streamparm *a)
{
struct v4l2_subdev_frame_interval ival = {
.interval = a->parm.capture.timeperframe
};
int ret;
if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
return -EINVAL;
memset(&a->parm, 0, sizeof(a->parm));
if (vdev->device_caps & V4L2_CAP_READWRITE)
a->parm.capture.readbuffers = 2;
else
a->parm.capture.readbuffers = 0;
if (v4l2_subdev_has_op(sd, pad, get_frame_interval))
a->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
ret = v4l2_subdev_call_state_active(sd, pad, set_frame_interval, &ival);
if (!ret)
a->parm.capture.timeperframe = ival.interval;
return ret;
}
EXPORT_SYMBOL_GPL(v4l2_s_parm_cap);
const struct v4l2_format_info *v4l2_format_info(u32 format)
{
static const struct v4l2_format_info formats[] = {
/* RGB formats */
{ .format = V4L2_PIX_FMT_BGR24, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 3, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_RGB24, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 3, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_HSV24, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 3, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_BGR32, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_XBGR32, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_BGRX32, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_RGB32, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_XRGB32, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_RGBX32, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_HSV32, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_ARGB32, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_RGBA32, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_ABGR32, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_BGRA32, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_RGB565, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_RGB555, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_BGR666, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_BGR48_12, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 6, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_ABGR64_12, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 8, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_RGBA1010102, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_RGBX1010102, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_ARGB2101010, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
/* YUV packed formats */
{ .format = V4L2_PIX_FMT_YUYV, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_YVYU, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_UYVY, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_VYUY, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_Y210, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_Y212, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_Y216, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_YUV48_12, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 6, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_MT2110T, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 2, .comp_planes = 2, .bpp = { 5, 10, 0, 0 }, .bpp_div = { 4, 4, 1, 1 }, .hdiv = 2, .vdiv = 2,
.block_w = { 16, 8, 0, 0 }, .block_h = { 32, 16, 0, 0 }},
{ .format = V4L2_PIX_FMT_MT2110R, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 2, .comp_planes = 2, .bpp = { 5, 10, 0, 0 }, .bpp_div = { 4, 4, 1, 1 }, .hdiv = 2, .vdiv = 2,
.block_w = { 16, 8, 0, 0 }, .block_h = { 32, 16, 0, 0 }},
/* YUV planar formats */
{ .format = V4L2_PIX_FMT_NV12, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 2 },
{ .format = V4L2_PIX_FMT_NV21, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 2 },
{ .format = V4L2_PIX_FMT_NV16, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_NV61, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_NV24, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_NV42, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_P010, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 2, 2, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_P012, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 2, 4, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 2 },
{ .format = V4L2_PIX_FMT_YUV410, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 4, .vdiv = 4 },
{ .format = V4L2_PIX_FMT_YVU410, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 4, .vdiv = 4 },
{ .format = V4L2_PIX_FMT_YUV411P, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 4, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_YUV420, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 2 },
{ .format = V4L2_PIX_FMT_YVU420, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 2 },
{ .format = V4L2_PIX_FMT_YUV422P, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_GREY, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 1, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
/* Tiled YUV formats */
{ .format = V4L2_PIX_FMT_NV12_4L4, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 2 },
{ .format = V4L2_PIX_FMT_NV15_4L4, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 5, 10, 0, 0 }, .bpp_div = { 4, 4, 1, 1 }, .hdiv = 2, .vdiv = 2,
.block_w = { 4, 2, 0, 0 }, .block_h = { 1, 1, 0, 0 }},
{ .format = V4L2_PIX_FMT_P010_4L4, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 2, 4, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 2 },
/* YUV planar formats, non contiguous variant */
{ .format = V4L2_PIX_FMT_YUV420M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 3, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 2 },
{ .format = V4L2_PIX_FMT_YVU420M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 3, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 2 },
{ .format = V4L2_PIX_FMT_YUV422M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 3, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_YVU422M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 3, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_YUV444M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 3, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_YVU444M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 3, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_NV12M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 2, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 2 },
{ .format = V4L2_PIX_FMT_NV21M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 2, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 2 },
{ .format = V4L2_PIX_FMT_NV16M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 2, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_NV61M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 2, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_P012M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 2, .comp_planes = 2, .bpp = { 2, 4, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 2 },
/* Bayer RGB formats */
{ .format = V4L2_PIX_FMT_SBGGR8, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 1, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SGBRG8, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 1, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SGRBG8, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 1, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SRGGB8, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 1, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SBGGR10, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SGBRG10, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SGRBG10, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SRGGB10, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SBGGR10ALAW8, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 1, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SGBRG10ALAW8, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 1, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SGRBG10ALAW8, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 1, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SRGGB10ALAW8, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 1, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SBGGR10DPCM8, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 1, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SGBRG10DPCM8, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 1, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SGRBG10DPCM8, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 1, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SRGGB10DPCM8, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 1, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SBGGR12, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SGBRG12, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SGRBG12, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SRGGB12, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
};
unsigned int i;
for (i = 0; i < ARRAY_SIZE(formats); ++i)
if (formats[i].format == format)
return &formats[i];
return NULL;
}
EXPORT_SYMBOL(v4l2_format_info);
static inline unsigned int v4l2_format_block_width(const struct v4l2_format_info *info, int plane)
{
if (!info->block_w[plane])
return 1;
return info->block_w[plane];
}
static inline unsigned int v4l2_format_block_height(const struct v4l2_format_info *info, int plane)
{
if (!info->block_h[plane])
return 1;
return info->block_h[plane];
}
void v4l2_apply_frmsize_constraints(u32 *width, u32 *height,
const struct v4l2_frmsize_stepwise *frmsize)
{
if (!frmsize)
return;
/*
* Clamp width/height to meet min/max constraints and round it up to
* macroblock alignment.
*/
*width = clamp_roundup(*width, frmsize->min_width, frmsize->max_width,
frmsize->step_width);
*height = clamp_roundup(*height, frmsize->min_height, frmsize->max_height,
frmsize->step_height);
}
EXPORT_SYMBOL_GPL(v4l2_apply_frmsize_constraints);
int v4l2_fill_pixfmt_mp(struct v4l2_pix_format_mplane *pixfmt,
u32 pixelformat, u32 width, u32 height)
{
const struct v4l2_format_info *info;
struct v4l2_plane_pix_format *plane;
int i;
info = v4l2_format_info(pixelformat);
if (!info)
return -EINVAL;
pixfmt->width = width;
pixfmt->height = height;
pixfmt->pixelformat = pixelformat;
pixfmt->num_planes = info->mem_planes;
if (info->mem_planes == 1) {
plane = &pixfmt->plane_fmt[0];
plane->bytesperline = ALIGN(width, v4l2_format_block_width(info, 0)) * info->bpp[0] / info->bpp_div[0];
plane->sizeimage = 0;
for (i = 0; i < info->comp_planes; i++) {
unsigned int hdiv = (i == 0) ? 1 : info->hdiv;
unsigned int vdiv = (i == 0) ? 1 : info->vdiv;
unsigned int aligned_width;
unsigned int aligned_height;
aligned_width = ALIGN(width, v4l2_format_block_width(info, i));
aligned_height = ALIGN(height, v4l2_format_block_height(info, i));
plane->sizeimage += info->bpp[i] *
DIV_ROUND_UP(aligned_width, hdiv) *
DIV_ROUND_UP(aligned_height, vdiv) / info->bpp_div[i];
}
} else {
for (i = 0; i < info->comp_planes; i++) {
unsigned int hdiv = (i == 0) ? 1 : info->hdiv;
unsigned int vdiv = (i == 0) ? 1 : info->vdiv;
unsigned int aligned_width;
unsigned int aligned_height;
aligned_width = ALIGN(width, v4l2_format_block_width(info, i));
aligned_height = ALIGN(height, v4l2_format_block_height(info, i));
plane = &pixfmt->plane_fmt[i];
plane->bytesperline =
info->bpp[i] * DIV_ROUND_UP(aligned_width, hdiv) / info->bpp_div[i];
plane->sizeimage =
plane->bytesperline * DIV_ROUND_UP(aligned_height, vdiv);
}
}
return 0;
}
EXPORT_SYMBOL_GPL(v4l2_fill_pixfmt_mp);
int v4l2_fill_pixfmt(struct v4l2_pix_format *pixfmt, u32 pixelformat,
u32 width, u32 height)
{
const struct v4l2_format_info *info;
int i;
info = v4l2_format_info(pixelformat);
if (!info)
return -EINVAL;
/* Single planar API cannot be used for multi plane formats. */
if (info->mem_planes > 1)
return -EINVAL;
pixfmt->width = width;
pixfmt->height = height;
pixfmt->pixelformat = pixelformat;
pixfmt->bytesperline = ALIGN(width, v4l2_format_block_width(info, 0)) * info->bpp[0] / info->bpp_div[0];
pixfmt->sizeimage = 0;
for (i = 0; i < info->comp_planes; i++) {
unsigned int hdiv = (i == 0) ? 1 : info->hdiv;
unsigned int vdiv = (i == 0) ? 1 : info->vdiv;
unsigned int aligned_width;
unsigned int aligned_height;
aligned_width = ALIGN(width, v4l2_format_block_width(info, i));
aligned_height = ALIGN(height, v4l2_format_block_height(info, i));
pixfmt->sizeimage += info->bpp[i] *
DIV_ROUND_UP(aligned_width, hdiv) *
DIV_ROUND_UP(aligned_height, vdiv) / info->bpp_div[i];
}
return 0;
}
EXPORT_SYMBOL_GPL(v4l2_fill_pixfmt);
s64 v4l2_get_link_freq(struct v4l2_ctrl_handler *handler, unsigned int mul,
unsigned int div)
{
struct v4l2_ctrl *ctrl;
s64 freq;
ctrl = v4l2_ctrl_find(handler, V4L2_CID_LINK_FREQ);
if (ctrl) {
struct v4l2_querymenu qm = { .id = V4L2_CID_LINK_FREQ };
int ret;
qm.index = v4l2_ctrl_g_ctrl(ctrl);
ret = v4l2_querymenu(handler, &qm);
if (ret)
return -ENOENT;
freq = qm.value;
} else {
if (!mul || !div)
return -ENOENT;
ctrl = v4l2_ctrl_find(handler, V4L2_CID_PIXEL_RATE);
if (!ctrl)
return -ENOENT;
freq = div_u64(v4l2_ctrl_g_ctrl_int64(ctrl) * mul, div);
pr_warn("%s: Link frequency estimated using pixel rate: result might be inaccurate\n",
__func__);
pr_warn("%s: Consider implementing support for V4L2_CID_LINK_FREQ in the transmitter driver\n",
__func__);
}
return freq > 0 ? freq : -EINVAL;
}
EXPORT_SYMBOL_GPL(v4l2_get_link_freq);
/*
* Simplify a fraction using a simple continued fraction decomposition. The
* idea here is to convert fractions such as 333333/10000000 to 1/30 using
* 32 bit arithmetic only. The algorithm is not perfect and relies upon two
* arbitrary parameters to remove non-significative terms from the simple
* continued fraction decomposition. Using 8 and 333 for n_terms and threshold
* respectively seems to give nice results.
*/
void v4l2_simplify_fraction(u32 *numerator, u32 *denominator,
unsigned int n_terms, unsigned int threshold)
{
u32 *an;
u32 x, y, r;
unsigned int i, n;
an = kmalloc_array(n_terms, sizeof(*an), GFP_KERNEL);
if (an == NULL)
return;
/*
* Convert the fraction to a simple continued fraction. See
* https://en.wikipedia.org/wiki/Continued_fraction
* Stop if the current term is bigger than or equal to the given
* threshold.
*/
x = *numerator;
y = *denominator;
for (n = 0; n < n_terms && y != 0; ++n) {
an[n] = x / y;
if (an[n] >= threshold) {
if (n < 2)
n++;
break;
}
r = x - an[n] * y;
x = y;
y = r;
}
/* Expand the simple continued fraction back to an integer fraction. */
x = 0;
y = 1;
for (i = n; i > 0; --i) {
r = y;
y = an[i-1] * y + x;
x = r;
}
*numerator = y;
*denominator = x;
kfree(an);
}
EXPORT_SYMBOL_GPL(v4l2_simplify_fraction);
/*
* Convert a fraction to a frame interval in 100ns multiples. The idea here is
* to compute numerator / denominator * 10000000 using 32 bit fixed point
* arithmetic only.
*/
u32 v4l2_fraction_to_interval(u32 numerator, u32 denominator)
{
u32 multiplier;
/* Saturate the result if the operation would overflow. */
if (denominator == 0 ||
numerator/denominator >= ((u32)-1)/10000000)
return (u32)-1;
/*
* Divide both the denominator and the multiplier by two until
* numerator * multiplier doesn't overflow. If anyone knows a better
* algorithm please let me know.
*/
multiplier = 10000000;
while (numerator > ((u32)-1)/multiplier) {
multiplier /= 2;
denominator /= 2;
}
return denominator ? numerator * multiplier / denominator : 0;
}
EXPORT_SYMBOL_GPL(v4l2_fraction_to_interval);
int v4l2_link_freq_to_bitmap(struct device *dev, const u64 *fw_link_freqs,
unsigned int num_of_fw_link_freqs,
const s64 *driver_link_freqs,
unsigned int num_of_driver_link_freqs,
unsigned long *bitmap)
{
unsigned int i;
*bitmap = 0;
if (!num_of_fw_link_freqs) {
dev_err(dev, "no link frequencies in firmware\n");
return -ENODATA;
}
for (i = 0; i < num_of_fw_link_freqs; i++) {
unsigned int j;
for (j = 0; j < num_of_driver_link_freqs; j++) {
if (fw_link_freqs[i] != driver_link_freqs[j])
continue;
dev_dbg(dev, "enabling link frequency %lld Hz\n",
driver_link_freqs[j]);
*bitmap |= BIT(j);
break;
}
}
if (!*bitmap) {
dev_err(dev, "no matching link frequencies found\n");
dev_dbg(dev, "specified in firmware:\n");
for (i = 0; i < num_of_fw_link_freqs; i++)
dev_dbg(dev, "\t%llu Hz\n", fw_link_freqs[i]);
dev_dbg(dev, "driver supported:\n");
for (i = 0; i < num_of_driver_link_freqs; i++)
dev_dbg(dev, "\t%lld Hz\n", driver_link_freqs[i]);
return -ENOENT;
}
return 0;
}
EXPORT_SYMBOL_GPL(v4l2_link_freq_to_bitmap);
Reference in New Issue View Git Blame Copy Permalink