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media: vimc: Enable set resolution at the scaler src pad
Modify the scaler subdevice to accept setting the resolution of the source pad (previously the source resolution would always be 3 times the sink for both dimensions). Now any resolution can be set at src (even smaller ones) and the sink video will be scaled to match it. Test example: With the vimc module up (using the default vimc topology) media-ctl -d platform:vimc -V '"Sensor A":0[fmt:SBGGR8_1X8/640x480]' media-ctl -d platform:vimc -V '"Debayer A":0[fmt:SBGGR8_1X8/640x480]' media-ctl -d platform:vimc -V '"Scaler":0[fmt:RGB888_1X24/640x480]' media-ctl -d platform:vimc -V '"Scaler":0[crop:(100,50)/400x150]' media-ctl -d platform:vimc -V '"Scaler":1[fmt:RGB888_1X24/300x700]' v4l2-ctl -z platform:vimc -d "RGB/YUV Capture" -v width=300,height=700 v4l2-ctl -z platform:vimc -d "Raw Capture 0" -v pixelformat=BA81 v4l2-ctl --stream-mmap --stream-count=10 -z platform:vimc -d "RGB/YUV Capture" \ --stream-to=test.raw The result will be a cropped stream that can be checked with the command ffplay -loglevel warning -v info -f rawvideo -pixel_format rgb24 \ -video_size "300x700" test.raw Co-developed-by: Gabriela Bittencourt <gabrielabittencourt00@gmail.com> Signed-off-by: Gabriela Bittencourt <gabrielabittencourt00@gmail.com> Co-developed-by: Gabriel Francisco Mandaji <gfmandaji@gmail.com> Signed-off-by: Gabriel Francisco Mandaji <gfmandaji@gmail.com> Signed-off-by: Pedro Terra <pedro@terraco.de> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
parent
a5991c4e94
commit
9b4a9b31b9
@ -61,9 +61,10 @@ vimc-debayer:
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* 1 Pad source
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vimc-scaler:
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Scale up the image by a factor of 3. E.g.: a 640x480 image becomes a
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1920x1440 image. (this value can be configured, see at
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`Module options`_).
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Re-size the image to meet the source pad resolution. E.g.: if the sync
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pad is configured to 360x480 and the source to 1280x720, the image will
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be stretched to fit the source resolution. Works for any resolution
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within the vimc limitations (even shrinking the image if necessary).
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Exposes:
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* 1 Pad sink
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@ -75,16 +76,3 @@ vimc-capture:
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* 1 Pad sink
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* 1 Pad source
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Module options
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--------------
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Vimc has a module parameter to configure the driver.
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* ``sca_mult=<unsigned int>``
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Image size multiplier factor to be used to multiply both width and
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height, so the image size will be ``sca_mult^2`` bigger than the
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original one. Currently, only supports scaling up (the default value
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is 3).
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@ -6,6 +6,7 @@
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*/
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#include <linux/moduleparam.h>
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#include <linux/string.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-rect.h>
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@ -13,11 +14,11 @@
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#include "vimc-common.h"
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static unsigned int sca_mult = 3;
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module_param(sca_mult, uint, 0000);
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MODULE_PARM_DESC(sca_mult, " the image size multiplier");
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#define MAX_ZOOM 8
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/* Pad identifier */
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enum vic_sca_pad {
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VIMC_SCA_SINK = 0,
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VIMC_SCA_SRC = 1,
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};
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#define VIMC_SCA_FMT_WIDTH_DEFAULT 640
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#define VIMC_SCA_FMT_HEIGHT_DEFAULT 480
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@ -25,19 +26,16 @@ MODULE_PARM_DESC(sca_mult, " the image size multiplier");
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struct vimc_sca_device {
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struct vimc_ent_device ved;
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struct v4l2_subdev sd;
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/* NOTE: the source fmt is the same as the sink
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* with the width and hight multiplied by mult
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*/
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struct v4l2_mbus_framefmt sink_fmt;
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struct v4l2_rect crop_rect;
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/* Frame format for both sink and src pad */
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struct v4l2_mbus_framefmt fmt[2];
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/* Values calculated when the stream starts */
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u8 *src_frame;
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unsigned int src_line_size;
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unsigned int bpp;
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struct media_pad pads[2];
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};
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static const struct v4l2_mbus_framefmt sink_fmt_default = {
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static const struct v4l2_mbus_framefmt fmt_default = {
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.width = VIMC_SCA_FMT_WIDTH_DEFAULT,
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.height = VIMC_SCA_FMT_HEIGHT_DEFAULT,
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.code = MEDIA_BUS_FMT_RGB888_1X24,
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@ -72,17 +70,6 @@ vimc_sca_get_crop_bound_sink(const struct v4l2_mbus_framefmt *sink_fmt)
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return r;
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}
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static void vimc_sca_adjust_sink_crop(struct v4l2_rect *r,
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const struct v4l2_mbus_framefmt *sink_fmt)
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{
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const struct v4l2_rect sink_rect =
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vimc_sca_get_crop_bound_sink(sink_fmt);
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/* Disallow rectangles smaller than the minimal one. */
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v4l2_rect_set_min_size(r, &crop_rect_min);
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v4l2_rect_map_inside(r, &sink_rect);
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}
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static int vimc_sca_init_cfg(struct v4l2_subdev *sd,
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struct v4l2_subdev_state *sd_state)
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{
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@ -90,19 +77,14 @@ static int vimc_sca_init_cfg(struct v4l2_subdev *sd,
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struct v4l2_rect *r;
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unsigned int i;
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mf = v4l2_subdev_get_try_format(sd, sd_state, 0);
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*mf = sink_fmt_default;
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r = v4l2_subdev_get_try_crop(sd, sd_state, 0);
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*r = crop_rect_default;
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for (i = 1; i < sd->entity.num_pads; i++) {
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for (i = 0; i < sd->entity.num_pads; i++) {
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mf = v4l2_subdev_get_try_format(sd, sd_state, i);
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*mf = sink_fmt_default;
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mf->width = mf->width * sca_mult;
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mf->height = mf->height * sca_mult;
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*mf = fmt_default;
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}
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r = v4l2_subdev_get_try_crop(sd, sd_state, VIMC_SCA_SINK);
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*r = crop_rect_default;
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return 0;
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}
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@ -144,112 +126,108 @@ static int vimc_sca_enum_frame_size(struct v4l2_subdev *sd,
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fse->min_width = VIMC_FRAME_MIN_WIDTH;
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fse->min_height = VIMC_FRAME_MIN_HEIGHT;
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if (VIMC_IS_SINK(fse->pad)) {
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fse->max_width = VIMC_FRAME_MAX_WIDTH;
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fse->max_height = VIMC_FRAME_MAX_HEIGHT;
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} else {
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fse->max_width = VIMC_FRAME_MAX_WIDTH * MAX_ZOOM;
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fse->max_height = VIMC_FRAME_MAX_HEIGHT * MAX_ZOOM;
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}
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fse->max_width = VIMC_FRAME_MAX_WIDTH;
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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 struct v4l2_mbus_framefmt *
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vimc_sca_pad_format(struct vimc_sca_device *vsca,
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struct v4l2_subdev_state *sd_state, u32 pad,
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enum v4l2_subdev_format_whence which)
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{
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if (which == V4L2_SUBDEV_FORMAT_TRY)
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return v4l2_subdev_get_try_format(&vsca->sd, sd_state, pad);
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else
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return &vsca->fmt[pad];
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}
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static struct v4l2_rect *
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vimc_sca_pad_crop(struct vimc_sca_device *vsca,
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struct v4l2_subdev_state *sd_state,
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enum v4l2_subdev_format_whence which)
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{
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if (which == V4L2_SUBDEV_FORMAT_TRY)
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return v4l2_subdev_get_try_crop(&vsca->sd, sd_state,
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VIMC_SCA_SINK);
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else
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return &vsca->crop_rect;
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}
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static int vimc_sca_get_fmt(struct v4l2_subdev *sd,
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struct v4l2_subdev_state *sd_state,
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struct v4l2_subdev_format *format)
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{
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struct vimc_sca_device *vsca = v4l2_get_subdevdata(sd);
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struct v4l2_rect *crop_rect;
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/* Get the current sink format */
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if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
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format->format = *v4l2_subdev_get_try_format(sd, sd_state, 0);
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crop_rect = v4l2_subdev_get_try_crop(sd, sd_state, 0);
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} else {
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format->format = vsca->sink_fmt;
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crop_rect = &vsca->crop_rect;
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}
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/* Scale the frame size for the source pad */
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if (VIMC_IS_SRC(format->pad)) {
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format->format.width = crop_rect->width * sca_mult;
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format->format.height = crop_rect->height * sca_mult;
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}
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format->format = *vimc_sca_pad_format(vsca, sd_state, format->pad,
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format->which);
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return 0;
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}
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static void vimc_sca_adjust_sink_fmt(struct v4l2_mbus_framefmt *fmt)
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{
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const struct vimc_pix_map *vpix;
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/* Only accept code in the pix map table in non bayer format */
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vpix = vimc_pix_map_by_code(fmt->code);
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if (!vpix || vpix->bayer)
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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_sca_set_fmt(struct v4l2_subdev *sd,
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struct v4l2_subdev_state *sd_state,
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struct v4l2_subdev_format *fmt)
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struct v4l2_subdev_format *format)
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{
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struct vimc_sca_device *vsca = v4l2_get_subdevdata(sd);
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struct v4l2_mbus_framefmt *sink_fmt;
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struct v4l2_rect *crop_rect;
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struct v4l2_mbus_framefmt *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 (vsca->src_frame)
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return -EBUSY;
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/* Do not change the active format while stream is on */
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if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE && vsca->src_frame)
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return -EBUSY;
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sink_fmt = &vsca->sink_fmt;
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crop_rect = &vsca->crop_rect;
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} else {
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sink_fmt = v4l2_subdev_get_try_format(sd, sd_state, 0);
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crop_rect = v4l2_subdev_get_try_crop(sd, sd_state, 0);
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}
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fmt = vimc_sca_pad_format(vsca, sd_state, format->pad, format->which);
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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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* The media bus code and colorspace can only be changed on the sink
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* pad, the source pad only follows.
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*/
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if (VIMC_IS_SRC(fmt->pad)) {
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fmt->format = *sink_fmt;
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fmt->format.width = crop_rect->width * sca_mult;
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fmt->format.height = crop_rect->height * sca_mult;
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} else {
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/* Set the new format in the sink pad */
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vimc_sca_adjust_sink_fmt(&fmt->format);
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if (format->pad == VIMC_SCA_SINK) {
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const struct vimc_pix_map *vpix;
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dev_dbg(vsca->ved.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", vsca->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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/* Only accept code in the pix map table in non bayer format. */
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vpix = vimc_pix_map_by_code(format->format.code);
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if (vpix && !vpix->bayer)
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fmt->code = format->format.code;
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else
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fmt->code = fmt_default.code;
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*sink_fmt = fmt->format;
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/* Do the crop, but respect the current bounds */
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vimc_sca_adjust_sink_crop(crop_rect, sink_fmt);
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/* Clamp the colorspace to valid values. */
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fmt->colorspace = format->format.colorspace;
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fmt->ycbcr_enc = format->format.ycbcr_enc;
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fmt->quantization = format->format.quantization;
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fmt->xfer_func = format->format.xfer_func;
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vimc_colorimetry_clamp(fmt);
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}
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/* Clamp and align the width and height */
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fmt->width = clamp_t(u32, format->format.width, VIMC_FRAME_MIN_WIDTH,
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VIMC_FRAME_MAX_WIDTH) & ~1;
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fmt->height = clamp_t(u32, format->format.height, VIMC_FRAME_MIN_HEIGHT,
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VIMC_FRAME_MAX_HEIGHT) & ~1;
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/*
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* Propagate the sink pad format to the crop rectangle and the source
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* pad.
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*/
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if (format->pad == VIMC_SCA_SINK) {
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struct v4l2_mbus_framefmt *src_fmt;
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struct v4l2_rect *crop;
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crop = vimc_sca_pad_crop(vsca, sd_state, format->which);
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crop->width = fmt->width;
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crop->height = fmt->height;
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crop->top = 0;
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crop->left = 0;
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src_fmt = vimc_sca_pad_format(vsca, sd_state, VIMC_SCA_SRC,
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format->which);
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*src_fmt = *fmt;
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}
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format->format = *fmt;
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return 0;
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}
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@ -259,24 +237,17 @@ static int vimc_sca_get_selection(struct v4l2_subdev *sd,
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{
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struct vimc_sca_device *vsca = v4l2_get_subdevdata(sd);
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struct v4l2_mbus_framefmt *sink_fmt;
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struct v4l2_rect *crop_rect;
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if (VIMC_IS_SRC(sel->pad))
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return -EINVAL;
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if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
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sink_fmt = &vsca->sink_fmt;
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crop_rect = &vsca->crop_rect;
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} else {
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sink_fmt = v4l2_subdev_get_try_format(sd, sd_state, 0);
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crop_rect = v4l2_subdev_get_try_crop(sd, sd_state, 0);
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}
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switch (sel->target) {
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case V4L2_SEL_TGT_CROP:
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sel->r = *crop_rect;
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sel->r = *vimc_sca_pad_crop(vsca, sd_state, sel->which);
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break;
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case V4L2_SEL_TGT_CROP_BOUNDS:
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sink_fmt = vimc_sca_pad_format(vsca, sd_state, VIMC_SCA_SINK,
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sel->which);
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sel->r = vimc_sca_get_crop_bound_sink(sink_fmt);
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break;
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default:
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@ -286,6 +257,17 @@ static int vimc_sca_get_selection(struct v4l2_subdev *sd,
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return 0;
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}
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static void vimc_sca_adjust_sink_crop(struct v4l2_rect *r,
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const struct v4l2_mbus_framefmt *sink_fmt)
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{
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const struct v4l2_rect sink_rect =
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vimc_sca_get_crop_bound_sink(sink_fmt);
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/* Disallow rectangles smaller than the minimal one. */
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v4l2_rect_set_min_size(r, &crop_rect_min);
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v4l2_rect_map_inside(r, &sink_rect);
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}
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static int vimc_sca_set_selection(struct v4l2_subdev *sd,
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struct v4l2_subdev_state *sd_state,
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struct v4l2_subdev_selection *sel)
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@ -294,30 +276,18 @@ static int vimc_sca_set_selection(struct v4l2_subdev *sd,
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struct v4l2_mbus_framefmt *sink_fmt;
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struct v4l2_rect *crop_rect;
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if (VIMC_IS_SRC(sel->pad))
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/* Only support setting the crop of the sink pad */
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if (VIMC_IS_SRC(sel->pad) || sel->target != V4L2_SEL_TGT_CROP)
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return -EINVAL;
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if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
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/* Do not change the format while stream is on */
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if (vsca->src_frame)
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return -EBUSY;
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if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE && vsca->src_frame)
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return -EBUSY;
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crop_rect = &vsca->crop_rect;
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sink_fmt = &vsca->sink_fmt;
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} else {
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crop_rect = v4l2_subdev_get_try_crop(sd, sd_state, 0);
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sink_fmt = v4l2_subdev_get_try_format(sd, sd_state, 0);
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}
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||||
|
||||
switch (sel->target) {
|
||||
case V4L2_SEL_TGT_CROP:
|
||||
/* Do the crop, but respect the current bounds */
|
||||
vimc_sca_adjust_sink_crop(&sel->r, sink_fmt);
|
||||
*crop_rect = sel->r;
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
crop_rect = vimc_sca_pad_crop(vsca, sd_state, sel->which);
|
||||
sink_fmt = vimc_sca_pad_format(vsca, sd_state, VIMC_SCA_SINK,
|
||||
sel->which);
|
||||
vimc_sca_adjust_sink_crop(&sel->r, sink_fmt);
|
||||
*crop_rect = sel->r;
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -344,16 +314,12 @@ static int vimc_sca_s_stream(struct v4l2_subdev *sd, int enable)
|
||||
return 0;
|
||||
|
||||
/* Save the bytes per pixel of the sink */
|
||||
vpix = vimc_pix_map_by_code(vsca->sink_fmt.code);
|
||||
vpix = vimc_pix_map_by_code(vsca->fmt[VIMC_SCA_SINK].code);
|
||||
vsca->bpp = vpix->bpp;
|
||||
|
||||
/* Calculate the width in bytes of the src frame */
|
||||
vsca->src_line_size = vsca->crop_rect.width *
|
||||
sca_mult * vsca->bpp;
|
||||
|
||||
/* Calculate the frame size of the source pad */
|
||||
frame_size = vsca->src_line_size * vsca->crop_rect.height *
|
||||
sca_mult;
|
||||
frame_size = vsca->fmt[VIMC_SCA_SRC].width
|
||||
* vsca->fmt[VIMC_SCA_SRC].height * vsca->bpp;
|
||||
|
||||
/* Allocate the frame buffer. Use vmalloc to be able to
|
||||
* allocate a large amount of memory
|
||||
@ -382,77 +348,32 @@ static const struct v4l2_subdev_ops vimc_sca_ops = {
|
||||
.video = &vimc_sca_video_ops,
|
||||
};
|
||||
|
||||
static void vimc_sca_fill_pix(u8 *const ptr,
|
||||
const u8 *const pixel,
|
||||
const unsigned int bpp)
|
||||
{
|
||||
unsigned int i;
|
||||
|
||||
/* copy the pixel to the pointer */
|
||||
for (i = 0; i < bpp; i++)
|
||||
ptr[i] = pixel[i];
|
||||
}
|
||||
|
||||
static void vimc_sca_scale_pix(const struct vimc_sca_device *const vsca,
|
||||
unsigned int lin, unsigned int col,
|
||||
const u8 *const sink_frame)
|
||||
{
|
||||
const struct v4l2_rect crop_rect = vsca->crop_rect;
|
||||
unsigned int i, j, index;
|
||||
const u8 *pixel;
|
||||
|
||||
/* Point to the pixel value in position (lin, col) in the sink frame */
|
||||
index = VIMC_FRAME_INDEX(lin, col,
|
||||
vsca->sink_fmt.width,
|
||||
vsca->bpp);
|
||||
pixel = &sink_frame[index];
|
||||
|
||||
dev_dbg(vsca->ved.dev,
|
||||
"sca: %s: --- scale_pix sink pos %dx%d, index %d ---\n",
|
||||
vsca->sd.name, lin, col, index);
|
||||
|
||||
/* point to the place we are going to put the first pixel
|
||||
* in the scaled src frame
|
||||
*/
|
||||
lin -= crop_rect.top;
|
||||
col -= crop_rect.left;
|
||||
index = VIMC_FRAME_INDEX(lin * sca_mult, col * sca_mult,
|
||||
crop_rect.width * sca_mult, vsca->bpp);
|
||||
|
||||
dev_dbg(vsca->ved.dev, "sca: %s: scale_pix src pos %dx%d, index %d\n",
|
||||
vsca->sd.name, lin * sca_mult, col * sca_mult, index);
|
||||
|
||||
/* Repeat this pixel mult times */
|
||||
for (i = 0; i < sca_mult; i++) {
|
||||
/* Iterate through each beginning of a
|
||||
* pixel repetition in a line
|
||||
*/
|
||||
for (j = 0; j < sca_mult * vsca->bpp; j += vsca->bpp) {
|
||||
dev_dbg(vsca->ved.dev,
|
||||
"sca: %s: sca: scale_pix src pos %d\n",
|
||||
vsca->sd.name, index + j);
|
||||
|
||||
/* copy the pixel to the position index + j */
|
||||
vimc_sca_fill_pix(&vsca->src_frame[index + j],
|
||||
pixel, vsca->bpp);
|
||||
}
|
||||
|
||||
/* move the index to the next line */
|
||||
index += vsca->src_line_size;
|
||||
}
|
||||
}
|
||||
|
||||
static void vimc_sca_fill_src_frame(const struct vimc_sca_device *const vsca,
|
||||
const u8 *const sink_frame)
|
||||
{
|
||||
const struct v4l2_rect r = vsca->crop_rect;
|
||||
unsigned int i, j;
|
||||
const struct v4l2_mbus_framefmt *src_fmt = &vsca->fmt[VIMC_SCA_SRC];
|
||||
const struct v4l2_rect *r = &vsca->crop_rect;
|
||||
unsigned int snk_width = vsca->fmt[VIMC_SCA_SINK].width;
|
||||
unsigned int src_x, src_y;
|
||||
u8 *walker = vsca->src_frame;
|
||||
|
||||
/* Scale each pixel from the original sink frame */
|
||||
/* TODO: implement scale down, only scale up is supported for now */
|
||||
for (i = r.top; i < r.top + r.height; i++)
|
||||
for (j = r.left; j < r.left + r.width; j++)
|
||||
vimc_sca_scale_pix(vsca, i, j, sink_frame);
|
||||
/* Set each pixel at the src_frame to its sink_frame equivalent */
|
||||
for (src_y = 0; src_y < src_fmt->height; src_y++) {
|
||||
unsigned int snk_y, y_offset;
|
||||
|
||||
snk_y = (src_y * r->height) / src_fmt->height + r->top;
|
||||
y_offset = snk_y * snk_width * vsca->bpp;
|
||||
|
||||
for (src_x = 0; src_x < src_fmt->width; src_x++) {
|
||||
unsigned int snk_x, x_offset, index;
|
||||
|
||||
snk_x = (src_x * r->width) / src_fmt->width + r->left;
|
||||
x_offset = snk_x * vsca->bpp;
|
||||
index = y_offset + x_offset;
|
||||
memcpy(walker, &sink_frame[index], vsca->bpp);
|
||||
walker += vsca->bpp;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void *vimc_sca_process_frame(struct vimc_ent_device *ved,
|
||||
@ -492,8 +413,8 @@ static struct vimc_ent_device *vimc_sca_add(struct vimc_device *vimc,
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
/* Initialize ved and sd */
|
||||
vsca->pads[0].flags = MEDIA_PAD_FL_SINK;
|
||||
vsca->pads[1].flags = MEDIA_PAD_FL_SOURCE;
|
||||
vsca->pads[VIMC_SCA_SINK].flags = MEDIA_PAD_FL_SINK;
|
||||
vsca->pads[VIMC_SCA_SRC].flags = MEDIA_PAD_FL_SOURCE;
|
||||
|
||||
ret = vimc_ent_sd_register(&vsca->ved, &vsca->sd, v4l2_dev,
|
||||
vcfg_name,
|
||||
@ -508,7 +429,8 @@ static struct vimc_ent_device *vimc_sca_add(struct vimc_device *vimc,
|
||||
vsca->ved.dev = vimc->mdev.dev;
|
||||
|
||||
/* Initialize the frame format */
|
||||
vsca->sink_fmt = sink_fmt_default;
|
||||
vsca->fmt[VIMC_SCA_SINK] = fmt_default;
|
||||
vsca->fmt[VIMC_SCA_SRC] = fmt_default;
|
||||
|
||||
/* Initialize the crop selection */
|
||||
vsca->crop_rect = crop_rect_default;
|
||||
|
Loading…
Reference in New Issue
Block a user