[media] vimc: deb: Add debayer filter
Implement the debayer filter and integrate it with the core Signed-off-by: Helen Koike <helen.koike@collabora.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Helen Fornazier
Mauro Carvalho Chehab
Родитель
4a29b70907
Коммит
88f42bf0b5
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@ -1,6 +1,8 @@
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vimc-objs := vimc-core.o
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vimc_capture-objs := vimc-capture.o
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vimc_common-objs := vimc-common.o
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vimc_debayer-objs := vimc-debayer.o
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vimc_sensor-objs := vimc-sensor.o
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obj-$(CONFIG_VIDEO_VIMC) += vimc.o vimc_capture.o vimc_common.o vimc_sensor.o
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obj-$(CONFIG_VIDEO_VIMC) += vimc.o vimc_capture.o vimc_common.o vimc-debayer.o \
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vimc_sensor.o
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@ -27,6 +27,8 @@
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#define VIMC_FRAME_MIN_WIDTH 16
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#define VIMC_FRAME_MIN_HEIGHT 16
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#define VIMC_FRAME_INDEX(lin, col, width, bpp) ((lin * width + col) * bpp)
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/**
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* struct vimc_colorimetry_clamp - Adjust colorimetry parameters
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*
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@ -0,0 +1,601 @@
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/*
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* vimc-debayer.c Virtual Media Controller Driver
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*
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* Copyright (C) 2015-2017 Helen Koike <helen.fornazier@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/component.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/vmalloc.h>
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#include <linux/v4l2-mediabus.h>
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#include <media/v4l2-subdev.h>
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#include "vimc-common.h"
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#define VIMC_DEB_DRV_NAME "vimc-debayer"
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static unsigned int deb_mean_win_size = 3;
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module_param(deb_mean_win_size, uint, 0000);
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MODULE_PARM_DESC(deb_mean_win_size, " the window size to calculate the mean.\n"
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"NOTE: the window size need to be an odd number, as the main pixel "
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"stays in the center of the window, otherwise the next odd number "
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"is considered");
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#define IS_SINK(pad) (!pad)
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#define IS_SRC(pad) (pad)
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enum vimc_deb_rgb_colors {
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VIMC_DEB_RED = 0,
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VIMC_DEB_GREEN = 1,
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VIMC_DEB_BLUE = 2,
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};
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struct vimc_deb_pix_map {
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u32 code;
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enum vimc_deb_rgb_colors order[2][2];
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};
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struct vimc_deb_device {
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struct vimc_ent_device ved;
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struct v4l2_subdev sd;
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struct device *dev;
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/* The active format */
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struct v4l2_mbus_framefmt sink_fmt;
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u32 src_code;
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void (*set_rgb_src)(struct vimc_deb_device *vdeb, unsigned int lin,
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unsigned int col, unsigned int rgb[3]);
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/* Values calculated when the stream starts */
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u8 *src_frame;
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const struct vimc_deb_pix_map *sink_pix_map;
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unsigned int sink_bpp;
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};
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static const struct v4l2_mbus_framefmt sink_fmt_default = {
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.width = 640,
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.height = 480,
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.code = MEDIA_BUS_FMT_RGB888_1X24,
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.field = V4L2_FIELD_NONE,
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.colorspace = V4L2_COLORSPACE_DEFAULT,
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};
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static const struct vimc_deb_pix_map vimc_deb_pix_map_list[] = {
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{
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.code = MEDIA_BUS_FMT_SBGGR8_1X8,
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.order = { { VIMC_DEB_BLUE, VIMC_DEB_GREEN },
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{ VIMC_DEB_GREEN, VIMC_DEB_RED } }
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},
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{
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.code = MEDIA_BUS_FMT_SGBRG8_1X8,
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.order = { { VIMC_DEB_GREEN, VIMC_DEB_BLUE },
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{ VIMC_DEB_RED, VIMC_DEB_GREEN } }
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},
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{
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.code = MEDIA_BUS_FMT_SGRBG8_1X8,
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.order = { { VIMC_DEB_GREEN, VIMC_DEB_RED },
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{ VIMC_DEB_BLUE, VIMC_DEB_GREEN } }
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},
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{
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.code = MEDIA_BUS_FMT_SRGGB8_1X8,
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.order = { { VIMC_DEB_RED, VIMC_DEB_GREEN },
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{ VIMC_DEB_GREEN, VIMC_DEB_BLUE } }
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},
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{
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.code = MEDIA_BUS_FMT_SBGGR10_1X10,
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.order = { { VIMC_DEB_BLUE, VIMC_DEB_GREEN },
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{ VIMC_DEB_GREEN, VIMC_DEB_RED } }
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},
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{
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.code = MEDIA_BUS_FMT_SGBRG10_1X10,
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.order = { { VIMC_DEB_GREEN, VIMC_DEB_BLUE },
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{ VIMC_DEB_RED, VIMC_DEB_GREEN } }
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},
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{
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.code = MEDIA_BUS_FMT_SGRBG10_1X10,
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.order = { { VIMC_DEB_GREEN, VIMC_DEB_RED },
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{ VIMC_DEB_BLUE, VIMC_DEB_GREEN } }
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},
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{
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.code = MEDIA_BUS_FMT_SRGGB10_1X10,
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.order = { { VIMC_DEB_RED, VIMC_DEB_GREEN },
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{ VIMC_DEB_GREEN, VIMC_DEB_BLUE } }
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},
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{
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.code = MEDIA_BUS_FMT_SBGGR12_1X12,
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.order = { { VIMC_DEB_BLUE, VIMC_DEB_GREEN },
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{ VIMC_DEB_GREEN, VIMC_DEB_RED } }
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},
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{
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.code = MEDIA_BUS_FMT_SGBRG12_1X12,
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.order = { { VIMC_DEB_GREEN, VIMC_DEB_BLUE },
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{ VIMC_DEB_RED, VIMC_DEB_GREEN } }
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},
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{
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.code = MEDIA_BUS_FMT_SGRBG12_1X12,
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.order = { { VIMC_DEB_GREEN, VIMC_DEB_RED },
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{ VIMC_DEB_BLUE, VIMC_DEB_GREEN } }
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},
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{
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.code = MEDIA_BUS_FMT_SRGGB12_1X12,
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.order = { { VIMC_DEB_RED, VIMC_DEB_GREEN },
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{ VIMC_DEB_GREEN, VIMC_DEB_BLUE } }
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},
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};
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static const struct vimc_deb_pix_map *vimc_deb_pix_map_by_code(u32 code)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(vimc_deb_pix_map_list); i++)
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if (vimc_deb_pix_map_list[i].code == code)
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return &vimc_deb_pix_map_list[i];
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return NULL;
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}
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static int vimc_deb_init_cfg(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg)
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{
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struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
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struct v4l2_mbus_framefmt *mf;
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unsigned int i;
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mf = v4l2_subdev_get_try_format(sd, cfg, 0);
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*mf = sink_fmt_default;
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for (i = 1; i < sd->entity.num_pads; i++) {
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mf = v4l2_subdev_get_try_format(sd, cfg, i);
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*mf = sink_fmt_default;
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mf->code = vdeb->src_code;
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}
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return 0;
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}
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static int vimc_deb_enum_mbus_code(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_mbus_code_enum *code)
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{
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/* We only support one format for source pads */
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if (IS_SRC(code->pad)) {
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struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
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if (code->index)
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return -EINVAL;
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code->code = vdeb->src_code;
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} else {
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if (code->index >= ARRAY_SIZE(vimc_deb_pix_map_list))
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return -EINVAL;
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code->code = vimc_deb_pix_map_list[code->index].code;
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}
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return 0;
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}
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static int vimc_deb_enum_frame_size(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_frame_size_enum *fse)
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{
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struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
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if (fse->index)
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return -EINVAL;
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if (IS_SINK(fse->pad)) {
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const struct vimc_deb_pix_map *vpix =
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vimc_deb_pix_map_by_code(fse->code);
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if (!vpix)
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return -EINVAL;
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} else if (fse->code != vdeb->src_code) {
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return -EINVAL;
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}
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fse->min_width = VIMC_FRAME_MIN_WIDTH;
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fse->max_width = VIMC_FRAME_MAX_WIDTH;
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fse->min_height = VIMC_FRAME_MIN_HEIGHT;
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fse->max_height = VIMC_FRAME_MAX_HEIGHT;
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return 0;
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}
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static int vimc_deb_get_fmt(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_format *fmt)
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{
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struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
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/* Get the current sink format */
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fmt->format = fmt->which == V4L2_SUBDEV_FORMAT_TRY ?
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*v4l2_subdev_get_try_format(sd, cfg, 0) :
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vdeb->sink_fmt;
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/* Set the right code for the source pad */
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if (IS_SRC(fmt->pad))
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fmt->format.code = vdeb->src_code;
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return 0;
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}
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static void vimc_deb_adjust_sink_fmt(struct v4l2_mbus_framefmt *fmt)
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{
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const struct vimc_deb_pix_map *vpix;
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/* Don't accept a code that is not on the debayer table */
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vpix = vimc_deb_pix_map_by_code(fmt->code);
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if (!vpix)
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fmt->code = sink_fmt_default.code;
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fmt->width = clamp_t(u32, fmt->width, VIMC_FRAME_MIN_WIDTH,
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VIMC_FRAME_MAX_WIDTH) & ~1;
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fmt->height = clamp_t(u32, fmt->height, VIMC_FRAME_MIN_HEIGHT,
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VIMC_FRAME_MAX_HEIGHT) & ~1;
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if (fmt->field == V4L2_FIELD_ANY)
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fmt->field = sink_fmt_default.field;
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vimc_colorimetry_clamp(fmt);
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}
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static int vimc_deb_set_fmt(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_format *fmt)
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{
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struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
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struct v4l2_mbus_framefmt *sink_fmt;
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if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
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/* Do not change the format while stream is on */
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if (vdeb->src_frame)
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return -EBUSY;
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sink_fmt = &vdeb->sink_fmt;
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} else {
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sink_fmt = v4l2_subdev_get_try_format(sd, cfg, 0);
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}
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/*
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* Do not change the format of the source pad,
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* it is propagated from the sink
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*/
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if (IS_SRC(fmt->pad)) {
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fmt->format = *sink_fmt;
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/* TODO: Add support for other formats */
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fmt->format.code = vdeb->src_code;
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} else {
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/* Set the new format in the sink pad */
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vimc_deb_adjust_sink_fmt(&fmt->format);
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dev_dbg(vdeb->dev, "%s: sink format update: "
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"old:%dx%d (0x%x, %d, %d, %d, %d) "
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"new:%dx%d (0x%x, %d, %d, %d, %d)\n", vdeb->sd.name,
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/* old */
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sink_fmt->width, sink_fmt->height, sink_fmt->code,
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sink_fmt->colorspace, sink_fmt->quantization,
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sink_fmt->xfer_func, sink_fmt->ycbcr_enc,
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/* new */
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fmt->format.width, fmt->format.height, fmt->format.code,
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fmt->format.colorspace, fmt->format.quantization,
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fmt->format.xfer_func, fmt->format.ycbcr_enc);
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*sink_fmt = fmt->format;
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}
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return 0;
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}
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static const struct v4l2_subdev_pad_ops vimc_deb_pad_ops = {
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.init_cfg = vimc_deb_init_cfg,
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.enum_mbus_code = vimc_deb_enum_mbus_code,
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.enum_frame_size = vimc_deb_enum_frame_size,
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.get_fmt = vimc_deb_get_fmt,
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.set_fmt = vimc_deb_set_fmt,
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};
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static void vimc_deb_set_rgb_mbus_fmt_rgb888_1x24(struct vimc_deb_device *vdeb,
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unsigned int lin,
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unsigned int col,
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unsigned int rgb[3])
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{
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unsigned int i, index;
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index = VIMC_FRAME_INDEX(lin, col, vdeb->sink_fmt.width, 3);
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for (i = 0; i < 3; i++)
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vdeb->src_frame[index + i] = rgb[i];
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}
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static int vimc_deb_s_stream(struct v4l2_subdev *sd, int enable)
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{
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struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
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int ret;
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if (enable) {
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const struct vimc_pix_map *vpix;
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unsigned int frame_size;
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if (vdeb->src_frame)
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return 0;
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/* Calculate the frame size of the source pad */
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vpix = vimc_pix_map_by_code(vdeb->src_code);
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frame_size = vdeb->sink_fmt.width * vdeb->sink_fmt.height *
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vpix->bpp;
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/* Save the bytes per pixel of the sink */
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vpix = vimc_pix_map_by_code(vdeb->sink_fmt.code);
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vdeb->sink_bpp = vpix->bpp;
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/* Get the corresponding pixel map from the table */
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vdeb->sink_pix_map =
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vimc_deb_pix_map_by_code(vdeb->sink_fmt.code);
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/*
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* Allocate the frame buffer. Use vmalloc to be able to
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* allocate a large amount of memory
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*/
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vdeb->src_frame = vmalloc(frame_size);
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if (!vdeb->src_frame)
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return -ENOMEM;
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/* Turn the stream on in the subdevices directly connected */
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ret = vimc_pipeline_s_stream(&vdeb->sd.entity, 1);
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if (ret) {
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vfree(vdeb->src_frame);
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vdeb->src_frame = NULL;
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return ret;
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}
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} else {
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if (!vdeb->src_frame)
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return 0;
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/* Disable streaming from the pipe */
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ret = vimc_pipeline_s_stream(&vdeb->sd.entity, 0);
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if (ret)
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return ret;
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vfree(vdeb->src_frame);
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vdeb->src_frame = NULL;
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}
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return 0;
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||||
}
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static struct v4l2_subdev_video_ops vimc_deb_video_ops = {
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.s_stream = vimc_deb_s_stream,
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};
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static const struct v4l2_subdev_ops vimc_deb_ops = {
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.pad = &vimc_deb_pad_ops,
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.video = &vimc_deb_video_ops,
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};
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static unsigned int vimc_deb_get_val(const u8 *bytes,
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const unsigned int n_bytes)
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{
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unsigned int i;
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unsigned int acc = 0;
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||||
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||||
for (i = 0; i < n_bytes; i++)
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acc = acc + (bytes[i] << (8 * i));
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||||
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return acc;
|
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}
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static void vimc_deb_calc_rgb_sink(struct vimc_deb_device *vdeb,
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const u8 *frame,
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const unsigned int lin,
|
||||
const unsigned int col,
|
||||
unsigned int rgb[3])
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||||
{
|
||||
unsigned int i, seek, wlin, wcol;
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||||
unsigned int n_rgb[3] = {0, 0, 0};
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||||
|
||||
for (i = 0; i < 3; i++)
|
||||
rgb[i] = 0;
|
||||
|
||||
/*
|
||||
* Calculate how many we need to subtract to get to the pixel in
|
||||
* the top left corner of the mean window (considering the current
|
||||
* pixel as the center)
|
||||
*/
|
||||
seek = deb_mean_win_size / 2;
|
||||
|
||||
/* Sum the values of the colors in the mean window */
|
||||
|
||||
dev_dbg(vdeb->dev,
|
||||
"deb: %s: --- Calc pixel %dx%d, window mean %d, seek %d ---\n",
|
||||
vdeb->sd.name, lin, col, vdeb->sink_fmt.height, seek);
|
||||
|
||||
/*
|
||||
* Iterate through all the lines in the mean window, start
|
||||
* with zero if the pixel is outside the frame and don't pass
|
||||
* the height when the pixel is in the bottom border of the
|
||||
* frame
|
||||
*/
|
||||
for (wlin = seek > lin ? 0 : lin - seek;
|
||||
wlin < lin + seek + 1 && wlin < vdeb->sink_fmt.height;
|
||||
wlin++) {
|
||||
|
||||
/*
|
||||
* Iterate through all the columns in the mean window, start
|
||||
* with zero if the pixel is outside the frame and don't pass
|
||||
* the width when the pixel is in the right border of the
|
||||
* frame
|
||||
*/
|
||||
for (wcol = seek > col ? 0 : col - seek;
|
||||
wcol < col + seek + 1 && wcol < vdeb->sink_fmt.width;
|
||||
wcol++) {
|
||||
enum vimc_deb_rgb_colors color;
|
||||
unsigned int index;
|
||||
|
||||
/* Check which color this pixel is */
|
||||
color = vdeb->sink_pix_map->order[wlin % 2][wcol % 2];
|
||||
|
||||
index = VIMC_FRAME_INDEX(wlin, wcol,
|
||||
vdeb->sink_fmt.width,
|
||||
vdeb->sink_bpp);
|
||||
|
||||
dev_dbg(vdeb->dev,
|
||||
"deb: %s: RGB CALC: frame index %d, win pos %dx%d, color %d\n",
|
||||
vdeb->sd.name, index, wlin, wcol, color);
|
||||
|
||||
/* Get its value */
|
||||
rgb[color] = rgb[color] +
|
||||
vimc_deb_get_val(&frame[index], vdeb->sink_bpp);
|
||||
|
||||
/* Save how many values we already added */
|
||||
n_rgb[color]++;
|
||||
|
||||
dev_dbg(vdeb->dev, "deb: %s: RGB CALC: val %d, n %d\n",
|
||||
vdeb->sd.name, rgb[color], n_rgb[color]);
|
||||
}
|
||||
}
|
||||
|
||||
/* Calculate the mean */
|
||||
for (i = 0; i < 3; i++) {
|
||||
dev_dbg(vdeb->dev,
|
||||
"deb: %s: PRE CALC: %dx%d Color %d, val %d, n %d\n",
|
||||
vdeb->sd.name, lin, col, i, rgb[i], n_rgb[i]);
|
||||
|
||||
if (n_rgb[i])
|
||||
rgb[i] = rgb[i] / n_rgb[i];
|
||||
|
||||
dev_dbg(vdeb->dev,
|
||||
"deb: %s: FINAL CALC: %dx%d Color %d, val %d\n",
|
||||
vdeb->sd.name, lin, col, i, rgb[i]);
|
||||
}
|
||||
}
|
||||
|
||||
static void vimc_deb_process_frame(struct vimc_ent_device *ved,
|
||||
struct media_pad *sink,
|
||||
const void *sink_frame)
|
||||
{
|
||||
struct vimc_deb_device *vdeb = container_of(ved, struct vimc_deb_device,
|
||||
ved);
|
||||
unsigned int rgb[3];
|
||||
unsigned int i, j;
|
||||
|
||||
/* If the stream in this node is not active, just return */
|
||||
if (!vdeb->src_frame)
|
||||
return;
|
||||
|
||||
for (i = 0; i < vdeb->sink_fmt.height; i++)
|
||||
for (j = 0; j < vdeb->sink_fmt.width; j++) {
|
||||
vimc_deb_calc_rgb_sink(vdeb, sink_frame, i, j, rgb);
|
||||
vdeb->set_rgb_src(vdeb, i, j, rgb);
|
||||
}
|
||||
|
||||
/* Propagate the frame through all source pads */
|
||||
for (i = 1; i < vdeb->sd.entity.num_pads; i++) {
|
||||
struct media_pad *pad = &vdeb->sd.entity.pads[i];
|
||||
|
||||
vimc_propagate_frame(pad, vdeb->src_frame);
|
||||
}
|
||||
}
|
||||
|
||||
static void vimc_deb_comp_unbind(struct device *comp, struct device *master,
|
||||
void *master_data)
|
||||
{
|
||||
struct vimc_ent_device *ved = dev_get_drvdata(comp);
|
||||
struct vimc_deb_device *vdeb = container_of(ved, struct vimc_deb_device,
|
||||
ved);
|
||||
|
||||
vimc_ent_sd_unregister(ved, &vdeb->sd);
|
||||
kfree(vdeb);
|
||||
}
|
||||
|
||||
static int vimc_deb_comp_bind(struct device *comp, struct device *master,
|
||||
void *master_data)
|
||||
{
|
||||
struct v4l2_device *v4l2_dev = master_data;
|
||||
struct vimc_platform_data *pdata = comp->platform_data;
|
||||
struct vimc_deb_device *vdeb;
|
||||
int ret;
|
||||
|
||||
/* Allocate the vdeb struct */
|
||||
vdeb = kzalloc(sizeof(*vdeb), GFP_KERNEL);
|
||||
if (!vdeb)
|
||||
return -ENOMEM;
|
||||
|
||||
/* Initialize ved and sd */
|
||||
ret = vimc_ent_sd_register(&vdeb->ved, &vdeb->sd, v4l2_dev,
|
||||
pdata->entity_name,
|
||||
MEDIA_ENT_F_ATV_DECODER, 2,
|
||||
(const unsigned long[2]) {MEDIA_PAD_FL_SINK,
|
||||
MEDIA_PAD_FL_SOURCE},
|
||||
&vimc_deb_ops);
|
||||
if (ret) {
|
||||
kfree(vdeb);
|
||||
return ret;
|
||||
}
|
||||
|
||||
vdeb->ved.process_frame = vimc_deb_process_frame;
|
||||
dev_set_drvdata(comp, &vdeb->ved);
|
||||
vdeb->dev = comp;
|
||||
|
||||
/* Initialize the frame format */
|
||||
vdeb->sink_fmt = sink_fmt_default;
|
||||
/*
|
||||
* TODO: Add support for more output formats, we only support
|
||||
* RGB888 for now
|
||||
* NOTE: the src format is always the same as the sink, except
|
||||
* for the code
|
||||
*/
|
||||
vdeb->src_code = MEDIA_BUS_FMT_RGB888_1X24;
|
||||
vdeb->set_rgb_src = vimc_deb_set_rgb_mbus_fmt_rgb888_1x24;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct component_ops vimc_deb_comp_ops = {
|
||||
.bind = vimc_deb_comp_bind,
|
||||
.unbind = vimc_deb_comp_unbind,
|
||||
};
|
||||
|
||||
static int vimc_deb_probe(struct platform_device *pdev)
|
||||
{
|
||||
return component_add(&pdev->dev, &vimc_deb_comp_ops);
|
||||
}
|
||||
|
||||
static int vimc_deb_remove(struct platform_device *pdev)
|
||||
{
|
||||
component_del(&pdev->dev, &vimc_deb_comp_ops);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver vimc_deb_pdrv = {
|
||||
.probe = vimc_deb_probe,
|
||||
.remove = vimc_deb_remove,
|
||||
.driver = {
|
||||
.name = VIMC_DEB_DRV_NAME,
|
||||
},
|
||||
};
|
||||
|
||||
static const struct platform_device_id vimc_deb_driver_ids[] = {
|
||||
{
|
||||
.name = VIMC_DEB_DRV_NAME,
|
||||
},
|
||||
{ }
|
||||
};
|
||||
|
||||
module_platform_driver(vimc_deb_pdrv);
|
||||
|
||||
MODULE_DEVICE_TABLE(platform, vimc_deb_driver_ids);
|
||||
|
||||
MODULE_DESCRIPTION("Virtual Media Controller Driver (VIMC) Debayer");
|
||||
MODULE_AUTHOR("Helen Mae Koike Fornazier <helen.fornazier@gmail.com>");
|
||||
MODULE_LICENSE("GPL");
|
||||
Загрузка…
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