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[media] omap3isp: resizer: Center the crop rectangle

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When the crop rectangle needs to be modified to match hardware
requirements, center the resulting rectangle on the requested rectangle
instead of removing pixels from the right and bottom sides only.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Laurent Pinchart 2011-02-18 09:41:49 -03:00 committed by Mauro Carvalho Chehab
parent 21d2b9587f
commit 8eca7a004e
1 changed files with 12 additions and 4 deletions
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16
drivers/media/video/omap3isp/ispresizer.c
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@ -775,6 +775,8 @@ static void resizer_calc_ratios(struct isp_res_device *res,
unsigned int max_width;
unsigned int max_height;
unsigned int width_alignment;
unsigned int width;
unsigned int height;
/*
* Clamp the output height based on the hardware capabilities and
@ -794,11 +796,11 @@ static void resizer_calc_ratios(struct isp_res_device *res,
if (ratio->vert <= MID_RESIZE_VALUE) {
upscaled_height = (output->height - 1) * ratio->vert
+ 32 * spv + 16;
input->height = (upscaled_height >> 8) + 4;
height = (upscaled_height >> 8) + 4;
} else {
upscaled_height = (output->height - 1) * ratio->vert
+ 64 * spv + 32;
input->height = (upscaled_height >> 8) + 7;
height = (upscaled_height >> 8) + 7;
}
/*
@ -862,12 +864,18 @@ static void resizer_calc_ratios(struct isp_res_device *res,
if (ratio->horz <= MID_RESIZE_VALUE) {
upscaled_width = (output->width - 1) * ratio->horz
+ 32 * sph + 16;
input->width = (upscaled_width >> 8) + 7;
width = (upscaled_width >> 8) + 7;
} else {
upscaled_width = (output->width - 1) * ratio->horz
+ 64 * sph + 32;
input->width = (upscaled_width >> 8) + 7;
width = (upscaled_width >> 8) + 7;
}
/* Center the new crop rectangle. */
input->left += (input->width - width) / 2;
input->top += (input->height - height) / 2;
input->width = width;
input->height = height;
}
/*