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Commit 80072871 authored by Tomasz Moń's avatar Tomasz Moń Committed by Mauro Carvalho Chehab
Browse files

[media] v4l: mem2mem_testdev: Add horizontal and vertical flip 



Add horizontal and vertical flip to the mem2mem_testdev driver.
Flip modes can be enabled either separately or simultaneously.

Signed-off-by: default avatarTomasz Moń <desowin@gmail.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent e9da6b3c

drivers/media/video/mem2mem_testdev.c

+124 −11
Original line number Diff line number Diff line
@@ -60,6 +60,10 @@ MODULE_VERSION("0.1.1"); 
#define MEM2MEM_COLOR_STEP	(0xff >> 4)

#define MEM2MEM_NUM_TILES	8



/* Flags that indicate processing mode */

#define MEM2MEM_HFLIP	(1 << 0)

#define MEM2MEM_VFLIP	(1 << 1)



#define dprintk(dev, fmt, arg...) \

	v4l2_dbg(1, 1, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg)
@@ -115,6 +119,24 @@ enum { 


static struct v4l2_queryctrl m2mtest_ctrls[] = {

	{

		.id		= V4L2_CID_HFLIP,

		.type		= V4L2_CTRL_TYPE_BOOLEAN,

		.name		= "Mirror",

		.minimum	= 0,

		.maximum	= 1,

		.step		= 1,

		.default_value	= 0,

		.flags		= 0,

	}, {

		.id		= V4L2_CID_VFLIP,

		.type		= V4L2_CTRL_TYPE_BOOLEAN,

		.name		= "Vertical Mirror",

		.minimum	= 0,

		.maximum	= 1,

		.step		= 1,

		.default_value	= 0,

		.flags		= 0,

	}, {

		.id		= V4L2_CID_TRANS_TIME_MSEC,

		.type		= V4L2_CTRL_TYPE_INTEGER,

		.name		= "Transaction time (msec)",
@@ -181,6 +203,9 @@ struct m2mtest_ctx { 
	/* Abort requested by m2m */

	int			aborting;



	/* Processing mode */

	int			mode;



	struct v4l2_m2m_ctx	*m2m_ctx;



	/* Source and destination queue data */
@@ -249,20 +274,85 @@ static int device_process(struct m2mtest_ctx *ctx, 
	bytes_left = bytesperline - tile_w * MEM2MEM_NUM_TILES;

	w = 0;



	switch (ctx->mode) {

	case MEM2MEM_HFLIP | MEM2MEM_VFLIP:

		p_out += bytesperline * height - bytes_left;

		for (y = 0; y < height; ++y) {

			for (t = 0; t < MEM2MEM_NUM_TILES; ++t) {

				if (w & 0x1) {

					for (x = 0; x < tile_w; ++x)

						*--p_out = *p_in++ +

							MEM2MEM_COLOR_STEP;

				} else {

					for (x = 0; x < tile_w; ++x)

						*--p_out = *p_in++ -

							MEM2MEM_COLOR_STEP;

				}

				++w;

			}

			p_in += bytes_left;

			p_out -= bytes_left;

		}

		break;



	case MEM2MEM_HFLIP:

		for (y = 0; y < height; ++y) {

			p_out += MEM2MEM_NUM_TILES * tile_w;

			for (t = 0; t < MEM2MEM_NUM_TILES; ++t) {

				if (w & 0x01) {

					for (x = 0; x < tile_w; ++x)

						*--p_out = *p_in++ +

							MEM2MEM_COLOR_STEP;

				} else {

					for (x = 0; x < tile_w; ++x)

						*--p_out = *p_in++ -

							MEM2MEM_COLOR_STEP;

				}

				++w;

			}

			p_in += bytes_left;

			p_out += bytesperline;

		}

		break;



	case MEM2MEM_VFLIP:

		p_out += bytesperline * (height - 1);

		for (y = 0; y < height; ++y) {

			for (t = 0; t < MEM2MEM_NUM_TILES; ++t) {

				if (w & 0x1) {

					for (x = 0; x < tile_w; ++x)

						*p_out++ = *p_in++ +

							MEM2MEM_COLOR_STEP;

				} else {

					for (x = 0; x < tile_w; ++x)

						*p_out++ = *p_in++ -

							MEM2MEM_COLOR_STEP;

				}

				++w;

			}

			p_in += bytes_left;

			p_out += bytes_left - 2 * bytesperline;

		}

		break;



	default:

		for (y = 0; y < height; ++y) {

			for (t = 0; t < MEM2MEM_NUM_TILES; ++t) {

				if (w & 0x1) {

					for (x = 0; x < tile_w; ++x)

					*p_out++ = *p_in++ + MEM2MEM_COLOR_STEP;

						*p_out++ = *p_in++ +

							MEM2MEM_COLOR_STEP;

				} else {

					for (x = 0; x < tile_w; ++x)

					*p_out++ = *p_in++ - MEM2MEM_COLOR_STEP;

						*p_out++ = *p_in++ -

							MEM2MEM_COLOR_STEP;

				}

				++w;

			}

			p_in += bytes_left;

			p_out += bytes_left;

		}

	}



	return 0;

}
@@ -648,6 +738,14 @@ static int vidioc_g_ctrl(struct file *file, void *priv, 
	struct m2mtest_ctx *ctx = priv;



	switch (ctrl->id) {

	case V4L2_CID_HFLIP:

		ctrl->value = (ctx->mode & MEM2MEM_HFLIP) ? 1 : 0;

		break;



	case V4L2_CID_VFLIP:

		ctrl->value = (ctx->mode & MEM2MEM_VFLIP) ? 1 : 0;

		break;



	case V4L2_CID_TRANS_TIME_MSEC:

		ctrl->value = ctx->transtime;

		break;
@@ -691,6 +789,20 @@ static int vidioc_s_ctrl(struct file *file, void *priv, 
		return ret;



	switch (ctrl->id) {

	case V4L2_CID_HFLIP:

		if (ctrl->value)

			ctx->mode |= MEM2MEM_HFLIP;

		else

			ctx->mode &= ~MEM2MEM_HFLIP;

		break;



	case V4L2_CID_VFLIP:

		if (ctrl->value)

			ctx->mode |= MEM2MEM_VFLIP;

		else

			ctx->mode &= ~MEM2MEM_VFLIP;

		break;



	case V4L2_CID_TRANS_TIME_MSEC:

		ctx->transtime = ctrl->value;

		break;
@@ -861,6 +973,7 @@ static int m2mtest_open(struct file *file) 
	ctx->translen = MEM2MEM_DEF_TRANSLEN;

	ctx->transtime = MEM2MEM_DEF_TRANSTIME;

	ctx->num_processed = 0;

	ctx->mode = 0;



	ctx->q_data[V4L2_M2M_SRC].fmt = &formats[0];

	ctx->q_data[V4L2_M2M_DST].fmt = &formats[0];