Hi Ricardo,
Thanks for the patch.
On Thu, Nov 7, 2013 at 12:12 AM, Ricardo Ribalda Delgado
<ricardo.ribalda@xxxxxxxxx> wrote:
> As discussed on the media summit 2013, there is no reason for the width
> and height to be signed.
>
> Therefore this patch is an attempt to convert those fields from __s32 to
> __u32.
>
> Acked-by: Sakari Ailus <sakari.ailus@xxxxxx> (documentation and smiapp)
> Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@xxxxxxxxx>
Acked-by: Lad, Prabhakar <prabhakar.csengg@xxxxxxxxx>
Regards,
--Prabhakar Lad
> ---
> v5: Comments by Sakari Ailus
> -Fix typos in summary
>
> v4: Wrong patch format
>
> v3: Comments by Sakari Ailus
> -Update also doc
>
> v2: Comments by Sakari Ailus and Laurent Pinchart
>
> -Fix alignment on all drivers
> -Replace min with min_t where possible and remove unneeded checks
>
> Documentation/DocBook/media/v4l/compat.xml | 12 ++++++++
> Documentation/DocBook/media/v4l/dev-overlay.xml | 8 ++---
> Documentation/DocBook/media/v4l/vidioc-cropcap.xml | 8 ++---
> drivers/media/i2c/mt9m032.c | 16 +++++-----
> drivers/media/i2c/mt9p031.c | 28 ++++++++++--------
> drivers/media/i2c/mt9t001.c | 26 ++++++++++-------
> drivers/media/i2c/mt9v032.c | 34 ++++++++++++----------
> drivers/media/i2c/smiapp/smiapp-core.c | 8 ++---
> drivers/media/i2c/soc_camera/mt9m111.c | 4 +--
> drivers/media/i2c/tvp5150.c | 14 ++++-----
> drivers/media/pci/bt8xx/bttv-driver.c | 6 ++--
> drivers/media/pci/saa7134/saa7134-video.c | 4 ---
> drivers/media/platform/soc_camera/soc_scale_crop.c | 4 +--
> include/uapi/linux/videodev2.h | 4 +--
> 14 files changed, 97 insertions(+), 79 deletions(-)
>
> diff --git a/Documentation/DocBook/media/v4l/compat.xml b/Documentation/DocBook/media/v4l/compat.xml
> index 0c7195e..5dbe68b 100644
> --- a/Documentation/DocBook/media/v4l/compat.xml
> +++ b/Documentation/DocBook/media/v4l/compat.xml
> @@ -2523,6 +2523,18 @@ that used it. It was originally scheduled for removal in 2.6.35.
> </orderedlist>
> </section>
>
> + <section>
> + <title>V4L2 in Linux 3.12</title>
> + <orderedlist>
> + <listitem>
> + <para> In struct <structname>v4l2_rect</structname>, the type
> +of <structfield>width</structfield> and <structfield>height</structfield>
> +fields changed from _s32 to _u32.
> + </para>
> + </listitem>
> + </orderedlist>
> + </section>
> +
> <section id="other">
> <title>Relation of V4L2 to other Linux multimedia APIs</title>
>
> diff --git a/Documentation/DocBook/media/v4l/dev-overlay.xml b/Documentation/DocBook/media/v4l/dev-overlay.xml
> index 40d1d76..a44ac66 100644
> --- a/Documentation/DocBook/media/v4l/dev-overlay.xml
> +++ b/Documentation/DocBook/media/v4l/dev-overlay.xml
> @@ -346,16 +346,14 @@ rectangle, in pixels.</entry>
> rectangle, in pixels. Offsets increase to the right and down.</entry>
> </row>
> <row>
> - <entry>__s32</entry>
> + <entry>__u32</entry>
> <entry><structfield>width</structfield></entry>
> <entry>Width of the rectangle, in pixels.</entry>
> </row>
> <row>
> - <entry>__s32</entry>
> + <entry>__u32</entry>
> <entry><structfield>height</structfield></entry>
> - <entry>Height of the rectangle, in pixels. Width and
> -height cannot be negative, the fields are signed for hysterical
> -reasons. <!-- video4linux-list@xxxxxxxxxx on 22 Oct 2002 subject
> + <entry>Height of the rectangle, in pixels.<!-- video4linux-list@xxxxxxxxxx on 22 Oct 2002 subject
> "Re:[V4L][patches!] Re:v4l2/kernel-2.5" --></entry>
> </row>
> </tbody>
> diff --git a/Documentation/DocBook/media/v4l/vidioc-cropcap.xml b/Documentation/DocBook/media/v4l/vidioc-cropcap.xml
> index bf7cc97..26b8f8f 100644
> --- a/Documentation/DocBook/media/v4l/vidioc-cropcap.xml
> +++ b/Documentation/DocBook/media/v4l/vidioc-cropcap.xml
> @@ -133,16 +133,14 @@ rectangle, in pixels.</entry>
> rectangle, in pixels.</entry>
> </row>
> <row>
> - <entry>__s32</entry>
> + <entry>__u32</entry>
> <entry><structfield>width</structfield></entry>
> <entry>Width of the rectangle, in pixels.</entry>
> </row>
> <row>
> - <entry>__s32</entry>
> + <entry>__u32</entry>
> <entry><structfield>height</structfield></entry>
> - <entry>Height of the rectangle, in pixels. Width
> -and height cannot be negative, the fields are signed for
> -hysterical reasons. <!-- video4linux-list@xxxxxxxxxx
> + <entry>Height of the rectangle, in pixels.<!-- video4linux-list@xxxxxxxxxx
> on 22 Oct 2002 subject "Re:[V4L][patches!] Re:v4l2/kernel-2.5" -->
> </entry>
> </row>
> diff --git a/drivers/media/i2c/mt9m032.c b/drivers/media/i2c/mt9m032.c
> index 846b15f..85ec3ba 100644
> --- a/drivers/media/i2c/mt9m032.c
> +++ b/drivers/media/i2c/mt9m032.c
> @@ -459,13 +459,15 @@ static int mt9m032_set_pad_crop(struct v4l2_subdev *subdev,
> MT9M032_COLUMN_START_MAX);
> rect.top = clamp(ALIGN(crop->rect.top, 2), MT9M032_ROW_START_MIN,
> MT9M032_ROW_START_MAX);
> - rect.width = clamp(ALIGN(crop->rect.width, 2), MT9M032_COLUMN_SIZE_MIN,
> - MT9M032_COLUMN_SIZE_MAX);
> - rect.height = clamp(ALIGN(crop->rect.height, 2), MT9M032_ROW_SIZE_MIN,
> - MT9M032_ROW_SIZE_MAX);
> -
> - rect.width = min(rect.width, MT9M032_PIXEL_ARRAY_WIDTH - rect.left);
> - rect.height = min(rect.height, MT9M032_PIXEL_ARRAY_HEIGHT - rect.top);
> + rect.width = clamp_t(unsigned int, ALIGN(crop->rect.width, 2),
> + MT9M032_COLUMN_SIZE_MIN, MT9M032_COLUMN_SIZE_MAX);
> + rect.height = clamp_t(unsigned int, ALIGN(crop->rect.height, 2),
> + MT9M032_ROW_SIZE_MIN, MT9M032_ROW_SIZE_MAX);
> +
> + rect.width = min_t(unsigned int, rect.width,
> + MT9M032_PIXEL_ARRAY_WIDTH - rect.left);
> + rect.height = min_t(unsigned int, rect.height,
> + MT9M032_PIXEL_ARRAY_HEIGHT - rect.top);
>
> __crop = __mt9m032_get_pad_crop(sensor, fh, crop->which);
>
> diff --git a/drivers/media/i2c/mt9p031.c b/drivers/media/i2c/mt9p031.c
> index 4734836..722f78a 100644
> --- a/drivers/media/i2c/mt9p031.c
> +++ b/drivers/media/i2c/mt9p031.c
> @@ -518,11 +518,13 @@ static int mt9p031_set_format(struct v4l2_subdev *subdev,
>
> /* Clamp the width and height to avoid dividing by zero. */
> width = clamp_t(unsigned int, ALIGN(format->format.width, 2),
> - max(__crop->width / 7, MT9P031_WINDOW_WIDTH_MIN),
> + max_t(unsigned int, __crop->width / 7,
> + MT9P031_WINDOW_WIDTH_MIN),
> __crop->width);
> height = clamp_t(unsigned int, ALIGN(format->format.height, 2),
> - max(__crop->height / 8, MT9P031_WINDOW_HEIGHT_MIN),
> - __crop->height);
> + max_t(unsigned int, __crop->height / 8,
> + MT9P031_WINDOW_HEIGHT_MIN),
> + __crop->height);
>
> hratio = DIV_ROUND_CLOSEST(__crop->width, width);
> vratio = DIV_ROUND_CLOSEST(__crop->height, height);
> @@ -564,15 +566,17 @@ static int mt9p031_set_crop(struct v4l2_subdev *subdev,
> MT9P031_COLUMN_START_MAX);
> rect.top = clamp(ALIGN(crop->rect.top, 2), MT9P031_ROW_START_MIN,
> MT9P031_ROW_START_MAX);
> - rect.width = clamp(ALIGN(crop->rect.width, 2),
> - MT9P031_WINDOW_WIDTH_MIN,
> - MT9P031_WINDOW_WIDTH_MAX);
> - rect.height = clamp(ALIGN(crop->rect.height, 2),
> - MT9P031_WINDOW_HEIGHT_MIN,
> - MT9P031_WINDOW_HEIGHT_MAX);
> -
> - rect.width = min(rect.width, MT9P031_PIXEL_ARRAY_WIDTH - rect.left);
> - rect.height = min(rect.height, MT9P031_PIXEL_ARRAY_HEIGHT - rect.top);
> + rect.width = clamp_t(unsigned int, ALIGN(crop->rect.width, 2),
> + MT9P031_WINDOW_WIDTH_MIN,
> + MT9P031_WINDOW_WIDTH_MAX);
> + rect.height = clamp_t(unsigned int, ALIGN(crop->rect.height, 2),
> + MT9P031_WINDOW_HEIGHT_MIN,
> + MT9P031_WINDOW_HEIGHT_MAX);
> +
> + rect.width = min_t(unsigned int, rect.width,
> + MT9P031_PIXEL_ARRAY_WIDTH - rect.left);
> + rect.height = min_t(unsigned int, rect.height,
> + MT9P031_PIXEL_ARRAY_HEIGHT - rect.top);
>
> __crop = __mt9p031_get_pad_crop(mt9p031, fh, crop->pad, crop->which);
>
> diff --git a/drivers/media/i2c/mt9t001.c b/drivers/media/i2c/mt9t001.c
> index 7964634..d41c70e 100644
> --- a/drivers/media/i2c/mt9t001.c
> +++ b/drivers/media/i2c/mt9t001.c
> @@ -291,10 +291,12 @@ static int mt9t001_set_format(struct v4l2_subdev *subdev,
>
> /* Clamp the width and height to avoid dividing by zero. */
> width = clamp_t(unsigned int, ALIGN(format->format.width, 2),
> - max(__crop->width / 8, MT9T001_WINDOW_HEIGHT_MIN + 1),
> + max_t(unsigned int, __crop->width / 8,
> + MT9T001_WINDOW_HEIGHT_MIN + 1),
> __crop->width);
> height = clamp_t(unsigned int, ALIGN(format->format.height, 2),
> - max(__crop->height / 8, MT9T001_WINDOW_HEIGHT_MIN + 1),
> + max_t(unsigned int, __crop->height / 8,
> + MT9T001_WINDOW_HEIGHT_MIN + 1),
> __crop->height);
>
> hratio = DIV_ROUND_CLOSEST(__crop->width, width);
> @@ -339,15 +341,17 @@ static int mt9t001_set_crop(struct v4l2_subdev *subdev,
> rect.top = clamp(ALIGN(crop->rect.top, 2),
> MT9T001_ROW_START_MIN,
> MT9T001_ROW_START_MAX);
> - rect.width = clamp(ALIGN(crop->rect.width, 2),
> - MT9T001_WINDOW_WIDTH_MIN + 1,
> - MT9T001_WINDOW_WIDTH_MAX + 1);
> - rect.height = clamp(ALIGN(crop->rect.height, 2),
> - MT9T001_WINDOW_HEIGHT_MIN + 1,
> - MT9T001_WINDOW_HEIGHT_MAX + 1);
> -
> - rect.width = min(rect.width, MT9T001_PIXEL_ARRAY_WIDTH - rect.left);
> - rect.height = min(rect.height, MT9T001_PIXEL_ARRAY_HEIGHT - rect.top);
> + rect.width = clamp_t(unsigned int, ALIGN(crop->rect.width, 2),
> + MT9T001_WINDOW_WIDTH_MIN + 1,
> + MT9T001_WINDOW_WIDTH_MAX + 1);
> + rect.height = clamp_t(unsigned int, ALIGN(crop->rect.height, 2),
> + MT9T001_WINDOW_HEIGHT_MIN + 1,
> + MT9T001_WINDOW_HEIGHT_MAX + 1);
> +
> + rect.width = min_t(unsigned int, rect.width,
> + MT9T001_PIXEL_ARRAY_WIDTH - rect.left);
> + rect.height = min_t(unsigned int, rect.height,
> + MT9T001_PIXEL_ARRAY_HEIGHT - rect.top);
>
> __crop = __mt9t001_get_pad_crop(mt9t001, fh, crop->pad, crop->which);
>
> diff --git a/drivers/media/i2c/mt9v032.c b/drivers/media/i2c/mt9v032.c
> index 2c50eff..ba8da9b 100644
> --- a/drivers/media/i2c/mt9v032.c
> +++ b/drivers/media/i2c/mt9v032.c
> @@ -420,12 +420,14 @@ static int mt9v032_set_format(struct v4l2_subdev *subdev,
> format->which);
>
> /* Clamp the width and height to avoid dividing by zero. */
> - width = clamp_t(unsigned int, ALIGN(format->format.width, 2),
> - max(__crop->width / 8, MT9V032_WINDOW_WIDTH_MIN),
> - __crop->width);
> - height = clamp_t(unsigned int, ALIGN(format->format.height, 2),
> - max(__crop->height / 8, MT9V032_WINDOW_HEIGHT_MIN),
> - __crop->height);
> + width = clamp(ALIGN(format->format.width, 2),
> + max_t(unsigned int, __crop->width / 8,
> + MT9V032_WINDOW_WIDTH_MIN),
> + __crop->width);
> + height = clamp(ALIGN(format->format.height, 2),
> + max_t(unsigned int, __crop->height / 8,
> + MT9V032_WINDOW_HEIGHT_MIN),
> + __crop->height);
>
> hratio = DIV_ROUND_CLOSEST(__crop->width, width);
> vratio = DIV_ROUND_CLOSEST(__crop->height, height);
> @@ -471,15 +473,17 @@ static int mt9v032_set_crop(struct v4l2_subdev *subdev,
> rect.top = clamp(ALIGN(crop->rect.top + 1, 2) - 1,
> MT9V032_ROW_START_MIN,
> MT9V032_ROW_START_MAX);
> - rect.width = clamp(ALIGN(crop->rect.width, 2),
> - MT9V032_WINDOW_WIDTH_MIN,
> - MT9V032_WINDOW_WIDTH_MAX);
> - rect.height = clamp(ALIGN(crop->rect.height, 2),
> - MT9V032_WINDOW_HEIGHT_MIN,
> - MT9V032_WINDOW_HEIGHT_MAX);
> -
> - rect.width = min(rect.width, MT9V032_PIXEL_ARRAY_WIDTH - rect.left);
> - rect.height = min(rect.height, MT9V032_PIXEL_ARRAY_HEIGHT - rect.top);
> + rect.width = clamp_t(unsigned int, ALIGN(crop->rect.width, 2),
> + MT9V032_WINDOW_WIDTH_MIN,
> + MT9V032_WINDOW_WIDTH_MAX);
> + rect.height = clamp_t(unsigned int, ALIGN(crop->rect.height, 2),
> + MT9V032_WINDOW_HEIGHT_MIN,
> + MT9V032_WINDOW_HEIGHT_MAX);
> +
> + rect.width = min_t(unsigned int,
> + rect.width, MT9V032_PIXEL_ARRAY_WIDTH - rect.left);
> + rect.height = min_t(unsigned int,
> + rect.height, MT9V032_PIXEL_ARRAY_HEIGHT - rect.top);
>
> __crop = __mt9v032_get_pad_crop(mt9v032, fh, crop->pad, crop->which);
>
> diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c
> index ae66d91..3fadb9e 100644
> --- a/drivers/media/i2c/smiapp/smiapp-core.c
> +++ b/drivers/media/i2c/smiapp/smiapp-core.c
> @@ -2028,8 +2028,8 @@ static int smiapp_set_crop(struct v4l2_subdev *subdev,
> sel->r.width = min(sel->r.width, src_size->width);
> sel->r.height = min(sel->r.height, src_size->height);
>
> - sel->r.left = min(sel->r.left, src_size->width - sel->r.width);
> - sel->r.top = min(sel->r.top, src_size->height - sel->r.height);
> + sel->r.left = min_t(int, sel->r.left, src_size->width - sel->r.width);
> + sel->r.top = min_t(int, sel->r.top, src_size->height - sel->r.height);
>
> *crops[sel->pad] = sel->r;
>
> @@ -2121,8 +2121,8 @@ static int smiapp_set_selection(struct v4l2_subdev *subdev,
>
> sel->r.left = max(0, sel->r.left & ~1);
> sel->r.top = max(0, sel->r.top & ~1);
> - sel->r.width = max(0, SMIAPP_ALIGN_DIM(sel->r.width, sel->flags));
> - sel->r.height = max(0, SMIAPP_ALIGN_DIM(sel->r.height, sel->flags));
> + sel->r.width = SMIAPP_ALIGN_DIM(sel->r.width, sel->flags);
> + sel->r.height = SMIAPP_ALIGN_DIM(sel->r.height, sel->flags);
>
> sel->r.width = max_t(unsigned int,
> sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE],
> diff --git a/drivers/media/i2c/soc_camera/mt9m111.c b/drivers/media/i2c/soc_camera/mt9m111.c
> index 6f40566..ccf5940 100644
> --- a/drivers/media/i2c/soc_camera/mt9m111.c
> +++ b/drivers/media/i2c/soc_camera/mt9m111.c
> @@ -208,8 +208,8 @@ struct mt9m111 {
> struct mt9m111_context *ctx;
> struct v4l2_rect rect; /* cropping rectangle */
> struct v4l2_clk *clk;
> - int width; /* output */
> - int height; /* sizes */
> + unsigned int width; /* output */
> + unsigned int height; /* sizes */
> struct mutex power_lock; /* lock to protect power_count */
> int power_count;
> const struct mt9m111_datafmt *fmt;
> diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c
> index 89c0b13..7b8962e 100644
> --- a/drivers/media/i2c/tvp5150.c
> +++ b/drivers/media/i2c/tvp5150.c
> @@ -867,7 +867,7 @@ static int tvp5150_s_crop(struct v4l2_subdev *sd, const struct v4l2_crop *a)
> struct v4l2_rect rect = a->c;
> struct tvp5150 *decoder = to_tvp5150(sd);
> v4l2_std_id std;
> - int hmax;
> + unsigned int hmax;
>
> v4l2_dbg(1, debug, sd, "%s left=%d, top=%d, width=%d, height=%d\n",
> __func__, rect.left, rect.top, rect.width, rect.height);
> @@ -877,9 +877,9 @@ static int tvp5150_s_crop(struct v4l2_subdev *sd, const struct v4l2_crop *a)
>
> /* tvp5150 has some special limits */
> rect.left = clamp(rect.left, 0, TVP5150_MAX_CROP_LEFT);
> - rect.width = clamp(rect.width,
> - TVP5150_H_MAX - TVP5150_MAX_CROP_LEFT - rect.left,
> - TVP5150_H_MAX - rect.left);
> + rect.width = clamp_t(unsigned int, rect.width,
> + TVP5150_H_MAX - TVP5150_MAX_CROP_LEFT - rect.left,
> + TVP5150_H_MAX - rect.left);
> rect.top = clamp(rect.top, 0, TVP5150_MAX_CROP_TOP);
>
> /* Calculate height based on current standard */
> @@ -893,9 +893,9 @@ static int tvp5150_s_crop(struct v4l2_subdev *sd, const struct v4l2_crop *a)
> else
> hmax = TVP5150_V_MAX_OTHERS;
>
> - rect.height = clamp(rect.height,
> - hmax - TVP5150_MAX_CROP_TOP - rect.top,
> - hmax - rect.top);
> + rect.height = clamp_t(unsigned int, rect.height,
> + hmax - TVP5150_MAX_CROP_TOP - rect.top,
> + hmax - rect.top);
>
> tvp5150_write(sd, TVP5150_VERT_BLANKING_START, rect.top);
> tvp5150_write(sd, TVP5150_VERT_BLANKING_STOP,
> diff --git a/drivers/media/pci/bt8xx/bttv-driver.c b/drivers/media/pci/bt8xx/bttv-driver.c
> index c6532de..41ec4fa 100644
> --- a/drivers/media/pci/bt8xx/bttv-driver.c
> +++ b/drivers/media/pci/bt8xx/bttv-driver.c
> @@ -1126,9 +1126,9 @@ bttv_crop_calc_limits(struct bttv_crop *c)
> c->min_scaled_height = 32;
> } else {
> c->min_scaled_width =
> - (max(48, c->rect.width >> 4) + 3) & ~3;
> + (max_t(unsigned int, 48, c->rect.width >> 4) + 3) & ~3;
> c->min_scaled_height =
> - max(32, c->rect.height >> 4);
> + max_t(unsigned int, 32, c->rect.height >> 4);
> }
>
> c->max_scaled_width = c->rect.width & ~3;
> @@ -2024,7 +2024,7 @@ limit_scaled_size_lock (struct bttv_fh * fh,
> /* We cannot scale up. When the scaled image is larger
> than crop.rect we adjust the crop.rect as required
> by the V4L2 spec, hence cropcap.bounds are our limit. */
> - max_width = min(b->width, (__s32) MAX_HACTIVE);
> + max_width = min_t(unsigned int, b->width, MAX_HACTIVE);
> max_height = b->height;
>
> /* We cannot capture the same line as video and VBI data.
> diff --git a/drivers/media/pci/saa7134/saa7134-video.c b/drivers/media/pci/saa7134/saa7134-video.c
> index fb60da8..bdbd805 100644
> --- a/drivers/media/pci/saa7134/saa7134-video.c
> +++ b/drivers/media/pci/saa7134/saa7134-video.c
> @@ -1979,10 +1979,6 @@ static int saa7134_s_crop(struct file *file, void *f, const struct v4l2_crop *cr
> if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
> crop->type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
> return -EINVAL;
> - if (crop->c.height < 0)
> - return -EINVAL;
> - if (crop->c.width < 0)
> - return -EINVAL;
>
> if (res_locked(fh->dev, RESOURCE_OVERLAY))
> return -EBUSY;
> diff --git a/drivers/media/platform/soc_camera/soc_scale_crop.c b/drivers/media/platform/soc_camera/soc_scale_crop.c
> index cbd3a34..8e74fb7 100644
> --- a/drivers/media/platform/soc_camera/soc_scale_crop.c
> +++ b/drivers/media/platform/soc_camera/soc_scale_crop.c
> @@ -141,8 +141,8 @@ int soc_camera_client_s_crop(struct v4l2_subdev *sd,
> * Popular special case - some cameras can only handle fixed sizes like
> * QVGA, VGA,... Take care to avoid infinite loop.
> */
> - width = max(cam_rect->width, 2);
> - height = max(cam_rect->height, 2);
> + width = max_t(unsigned int, cam_rect->width, 2);
> + height = max_t(unsigned int, cam_rect->height, 2);
>
> /*
> * Loop as long as sensor is not covering the requested rectangle and
> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> index 437f1b0..6ae7bbe 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -207,8 +207,8 @@ enum v4l2_priority {
> struct v4l2_rect {
> __s32 left;
> __s32 top;
> - __s32 width;
> - __s32 height;
> + __u32 width;
> + __u32 height;
> };
>
> struct v4l2_fract {
> --
> 1.8.4.rc3
>
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