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[media] vimc: sen: Support several image formats

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Allow user space to change the image format as the frame size, the
media bus pixel format, colorspace, quantization, field YCbCr encoding
and the transfer function

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 2017-06-19 14:00:16 -03:00 committed by Mauro Carvalho Chehab
parent 441c0db6e5
commit 88ad71aab1
3 changed files with 121 additions and 29 deletions
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8
drivers/media/platform/vimc/vimc-common.c
View File

@ -144,6 +144,14 @@ static const struct vimc_pix_map vimc_pix_map_list[] = {
},
};
const struct vimc_pix_map *vimc_pix_map_by_index(unsigned int i)
{
if (i >= ARRAY_SIZE(vimc_pix_map_list))
return NULL;
return &vimc_pix_map_list[i];
}
const struct vimc_pix_map *vimc_pix_map_by_code(u32 code)
{
unsigned int i;

12
drivers/media/platform/vimc/vimc-common.h
View File

@ -22,6 +22,11 @@
#include <media/media-device.h>
#include <media/v4l2-device.h>
#define VIMC_FRAME_MAX_WIDTH 4096
#define VIMC_FRAME_MAX_HEIGHT 2160
#define VIMC_FRAME_MIN_WIDTH 16
#define VIMC_FRAME_MIN_HEIGHT 16
/**
* struct vimc_colorimetry_clamp - Adjust colorimetry parameters
*
@ -138,6 +143,13 @@ static inline void vimc_pads_cleanup(struct media_pad *pads)
*/
int vimc_pipeline_s_stream(struct media_entity *ent, int enable);
/**
* vimc_pix_map_by_index - get vimc_pix_map struct by its index
*
* @i: index of the vimc_pix_map struct in vimc_pix_map_list
*/
const struct vimc_pix_map *vimc_pix_map_by_index(unsigned int i);
/**
* vimc_pix_map_by_code - get vimc_pix_map struct by media bus code
*

130
drivers/media/platform/vimc/vimc-sensor.c
View File

@ -24,8 +24,6 @@
#include "vimc-sensor.h"
#define VIMC_SEN_FRAME_MAX_WIDTH 4096
struct vimc_sen_device {
struct vimc_ent_device ved;
struct v4l2_subdev sd;
@ -36,18 +34,39 @@ struct vimc_sen_device {
struct v4l2_mbus_framefmt mbus_format;
};
static const struct v4l2_mbus_framefmt fmt_default = {
.width = 640,
.height = 480,
.code = MEDIA_BUS_FMT_RGB888_1X24,
.field = V4L2_FIELD_NONE,
.colorspace = V4L2_COLORSPACE_DEFAULT,
};
static int vimc_sen_init_cfg(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg)
{
unsigned int i;
for (i = 0; i < sd->entity.num_pads; i++) {
struct v4l2_mbus_framefmt *mf;
mf = v4l2_subdev_get_try_format(sd, cfg, i);
*mf = fmt_default;
}
return 0;
}
static int vimc_sen_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
{
struct vimc_sen_device *vsen =
container_of(sd, struct vimc_sen_device, sd);
const struct vimc_pix_map *vpix = vimc_pix_map_by_index(code->index);
/* TODO: Add support for other codes */
if (code->index)
if (!vpix)
return -EINVAL;
code->code = vsen->mbus_format.code;
code->code = vpix->code;
return 0;
}
@ -56,33 +75,34 @@ static int vimc_sen_enum_frame_size(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_frame_size_enum *fse)
{
struct vimc_sen_device *vsen =
container_of(sd, struct vimc_sen_device, sd);
const struct vimc_pix_map *vpix;
/* TODO: Add support to other formats */
if (fse->index)
return -EINVAL;
/* TODO: Add support for other codes */
if (fse->code != vsen->mbus_format.code)
/* Only accept code in the pix map table */
vpix = vimc_pix_map_by_code(fse->code);
if (!vpix)
return -EINVAL;
fse->min_width = vsen->mbus_format.width;
fse->max_width = vsen->mbus_format.width;
fse->min_height = vsen->mbus_format.height;
fse->max_height = vsen->mbus_format.height;
fse->min_width = VIMC_FRAME_MIN_WIDTH;
fse->max_width = VIMC_FRAME_MAX_WIDTH;
fse->min_height = VIMC_FRAME_MIN_HEIGHT;
fse->max_height = VIMC_FRAME_MAX_HEIGHT;
return 0;
}
static int vimc_sen_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *format)
struct v4l2_subdev_format *fmt)
{
struct vimc_sen_device *vsen =
container_of(sd, struct vimc_sen_device, sd);
format->format = vsen->mbus_format;
fmt->format = fmt->which == V4L2_SUBDEV_FORMAT_TRY ?
*v4l2_subdev_get_try_format(sd, cfg, fmt->pad) :
vsen->mbus_format;
return 0;
}
@ -105,12 +125,70 @@ static void vimc_sen_tpg_s_format(struct vimc_sen_device *vsen)
tpg_s_xfer_func(&vsen->tpg, vsen->mbus_format.xfer_func);
}
static void vimc_sen_adjust_fmt(struct v4l2_mbus_framefmt *fmt)
{
const struct vimc_pix_map *vpix;
/* Only accept code in the pix map table */
vpix = vimc_pix_map_by_code(fmt->code);
if (!vpix)
fmt->code = fmt_default.code;
fmt->width = clamp_t(u32, fmt->width, VIMC_FRAME_MIN_WIDTH,
VIMC_FRAME_MAX_WIDTH) & ~1;
fmt->height = clamp_t(u32, fmt->height, VIMC_FRAME_MIN_HEIGHT,
VIMC_FRAME_MAX_HEIGHT) & ~1;
/* TODO: add support for V4L2_FIELD_ALTERNATE */
if (fmt->field == V4L2_FIELD_ANY || fmt->field == V4L2_FIELD_ALTERNATE)
fmt->field = fmt_default.field;
vimc_colorimetry_clamp(fmt);
}
static int vimc_sen_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct vimc_sen_device *vsen = v4l2_get_subdevdata(sd);
struct v4l2_mbus_framefmt *mf;
if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
/* Do not change the format while stream is on */
if (vsen->frame)
return -EBUSY;
mf = &vsen->mbus_format;
} else {
mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
}
/* Set the new format */
vimc_sen_adjust_fmt(&fmt->format);
dev_dbg(vsen->sd.v4l2_dev->mdev->dev, "%s: format update: "
"old:%dx%d (0x%x, %d, %d, %d, %d) "
"new:%dx%d (0x%x, %d, %d, %d, %d)\n", vsen->sd.name,
/* old */
mf->width, mf->height, mf->code,
mf->colorspace, mf->quantization,
mf->xfer_func, mf->ycbcr_enc,
/* new */
fmt->format.width, fmt->format.height, fmt->format.code,
fmt->format.colorspace, fmt->format.quantization,
fmt->format.xfer_func, fmt->format.ycbcr_enc);
*mf = fmt->format;
return 0;
}
static const struct v4l2_subdev_pad_ops vimc_sen_pad_ops = {
.init_cfg = vimc_sen_init_cfg,
.enum_mbus_code = vimc_sen_enum_mbus_code,
.enum_frame_size = vimc_sen_enum_frame_size,
.get_fmt = vimc_sen_get_fmt,
/* TODO: Add support to other formats */
.set_fmt = vimc_sen_get_fmt,
.set_fmt = vimc_sen_set_fmt,
};
static int vimc_sen_tpg_thread(void *data)
@ -247,19 +325,13 @@ struct vimc_ent_device *vimc_sen_create(struct v4l2_device *v4l2_dev,
if (ret)
goto err_free_vsen;
/* Set the active frame format (this is hardcoded for now) */
vsen->mbus_format.width = 640;
vsen->mbus_format.height = 480;
vsen->mbus_format.code = MEDIA_BUS_FMT_RGB888_1X24;
vsen->mbus_format.field = V4L2_FIELD_NONE;
vsen->mbus_format.colorspace = V4L2_COLORSPACE_SRGB;
vsen->mbus_format.quantization = V4L2_QUANTIZATION_FULL_RANGE;
vsen->mbus_format.xfer_func = V4L2_XFER_FUNC_SRGB;
/* Initialize the frame format */
vsen->mbus_format = fmt_default;
/* Initialize the test pattern generator */
tpg_init(&vsen->tpg, vsen->mbus_format.width,
vsen->mbus_format.height);
ret = tpg_alloc(&vsen->tpg, VIMC_SEN_FRAME_MAX_WIDTH);
ret = tpg_alloc(&vsen->tpg, VIMC_FRAME_MAX_WIDTH);
if (ret)
goto err_unregister_ent_sd;