C++ (Cpp) gsc_capture_get_frame示例

示例#1

文件： gsc-capture.c 项目： hedongjie/m35x

static int gsc_capture_subdev_set_crop(struct v4l2_subdev *sd,
				       struct v4l2_subdev_fh *fh,
				       struct v4l2_subdev_crop *crop)
{
	struct gsc_dev *gsc = v4l2_get_subdevdata(sd);
	struct gsc_ctx *ctx = gsc->cap.ctx;
	struct gsc_frame *frame = gsc_capture_get_frame(ctx, crop->pad);

	gsc_cap_try_crop(gsc, &crop->rect, crop->pad);

	if (crop->which == V4L2_SUBDEV_FORMAT_ACTIVE)
		frame->crop = crop->rect;

	return 0;
}

示例#2

文件： gsc-capture.c 项目： BigBot96/android_kernel_samsung_gts2wifi

static void gsc_cap_try_crop(struct gsc_dev *gsc, struct v4l2_rect *crop, u32 pad)
{
	struct gsc_variant *variant = gsc->variant;
	struct gsc_ctx *ctx = gsc->cap.ctx;
	struct gsc_frame *frame = gsc_capture_get_frame(ctx, pad);

	u32 crop_min_w = variant->pix_min->target_w;
	u32 crop_min_h = variant->pix_min->target_h;
	u32 crop_max_w = frame->f_width;
	u32 crop_max_h = frame->f_height;

	crop->left = clamp_t(u32, crop->left, 0, crop_max_w - crop_min_w);
	crop->top = clamp_t(u32, crop->top, 0, crop_max_h - crop_min_h);
	crop->width = clamp_t(u32, crop->width, crop_min_w, crop_max_w);
	crop->height = clamp_t(u32, crop->height, crop_min_h, crop_max_h);
}

示例#3

文件： gsc-capture.c 项目： hedongjie/m35x

static int __gsc_cap_get_crop(struct gsc_dev *gsc, struct v4l2_subdev_fh *fh,
			      unsigned int pad, enum v4l2_subdev_format_whence which,
				struct v4l2_rect *crop)
{
	struct gsc_ctx *ctx = gsc->cap.ctx;
	struct gsc_frame *frame = gsc_capture_get_frame(ctx, pad);

	if (which == V4L2_SUBDEV_FORMAT_TRY) {
		crop = v4l2_subdev_get_try_crop(fh, pad);
	} else {
		crop->left = frame->crop.left;
		crop->top = frame->crop.top;
		crop->width = frame->crop.width;
		crop->height = frame->crop.height;
	}

	return 0;
}

示例#4

文件： gsc-capture.c 项目： BigBot96/android_kernel_samsung_gts2wifi

static int gsc_capture_subdev_set_crop(struct v4l2_subdev *sd,
				       struct v4l2_subdev_fh *fh,
				       struct v4l2_subdev_crop *crop)
{
	struct gsc_dev *gsc = v4l2_get_subdevdata(sd);
	struct gsc_ctx *ctx = gsc->cap.ctx;
	struct gsc_frame *frame = gsc_capture_get_frame(ctx, crop->pad);

	if ((crop->pad == GSC_PAD_SINK) && (crop->rect.width % 8)) {
		gsc_err("%d is not aligned 8", crop->rect.width);
		return -EINVAL;
	}
	gsc_cap_try_crop(gsc, &crop->rect, crop->pad);

	if (crop->which == V4L2_SUBDEV_FORMAT_ACTIVE)
		frame->crop = crop->rect;

	return 0;
}

示例#5

文件： gsc-capture.c 项目： hedongjie/m35x

static int gsc_capture_subdev_set_fmt(struct v4l2_subdev *sd,
				      struct v4l2_subdev_fh *fh,
				      struct v4l2_subdev_format *fmt)
{
	struct gsc_dev *gsc = v4l2_get_subdevdata(sd);
	struct v4l2_mbus_framefmt *mf;
	struct gsc_ctx *ctx = gsc->cap.ctx;
	struct gsc_frame *frame;

	mf = __gsc_cap_get_format(gsc, fh, fmt->pad, fmt->which);
	if (mf == NULL)
		return -EINVAL;

	gsc_cap_try_format(gsc, fh, fmt->pad, &fmt->format, fmt->which);
	*mf = fmt->format;

	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
		return 0;

	frame = gsc_capture_get_frame(ctx, fmt->pad);

	if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
		frame->crop.left = 0;
		frame->crop.top = 0;
		frame->f_width = mf->width;
		frame->f_height = mf->height;
		frame->crop.width = mf->width;
		frame->crop.height = mf->height;
	}
	gsc_dbg("offs_h : %d, offs_v : %d, f_width : %d, f_height :%d,\
				width : %d, height : %d", frame->crop.left,\
				frame->crop.top, frame->f_width,
				frame->f_height,\
				frame->crop.width, frame->crop.height);

	return 0;
}