include/media/v4l2-tpg.h - arm/linux - Git at Google

 /*
  * v4l2-tpg.h - Test Pattern Generator
  *
  * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
  *
  * This program is free software; you may redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; version 2 of the License.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */

 #ifndef _V4L2_TPG_H_
 #define _V4L2_TPG_H_

 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/random.h>
 #include <linux/slab.h>
 #include <linux/vmalloc.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-tpg-colors.h>

 enum tpg_pattern {
 	TPG_PAT_75_COLORBAR,
 	TPG_PAT_100_COLORBAR,
 	TPG_PAT_CSC_COLORBAR,
 	TPG_PAT_100_HCOLORBAR,
 	TPG_PAT_100_COLORSQUARES,
 	TPG_PAT_BLACK,
 	TPG_PAT_WHITE,
 	TPG_PAT_RED,
 	TPG_PAT_GREEN,
 	TPG_PAT_BLUE,
 	TPG_PAT_CHECKERS_16X16,
 	TPG_PAT_CHECKERS_2X2,
 	TPG_PAT_CHECKERS_1X1,
 	TPG_PAT_COLOR_CHECKERS_2X2,
 	TPG_PAT_COLOR_CHECKERS_1X1,
 	TPG_PAT_ALTERNATING_HLINES,
 	TPG_PAT_ALTERNATING_VLINES,
 	TPG_PAT_CROSS_1_PIXEL,
 	TPG_PAT_CROSS_2_PIXELS,
 	TPG_PAT_CROSS_10_PIXELS,
 	TPG_PAT_GRAY_RAMP,

 	/* Must be the last pattern */
 	TPG_PAT_NOISE,
 };

 extern const char * const tpg_pattern_strings[];

 enum tpg_quality {
 	TPG_QUAL_COLOR,
 	TPG_QUAL_GRAY,
 	TPG_QUAL_NOISE
 };

 enum tpg_video_aspect {
 	TPG_VIDEO_ASPECT_IMAGE,
 	TPG_VIDEO_ASPECT_4X3,
 	TPG_VIDEO_ASPECT_14X9_CENTRE,
 	TPG_VIDEO_ASPECT_16X9_CENTRE,
 	TPG_VIDEO_ASPECT_16X9_ANAMORPHIC,
 };

 enum tpg_pixel_aspect {
 	TPG_PIXEL_ASPECT_SQUARE,
 	TPG_PIXEL_ASPECT_NTSC,
 	TPG_PIXEL_ASPECT_PAL,
 };

 enum tpg_move_mode {
 	TPG_MOVE_NEG_FAST,
 	TPG_MOVE_NEG,
 	TPG_MOVE_NEG_SLOW,
 	TPG_MOVE_NONE,
 	TPG_MOVE_POS_SLOW,
 	TPG_MOVE_POS,
 	TPG_MOVE_POS_FAST,
 };

 enum tgp_color_enc {
 	TGP_COLOR_ENC_RGB,
 	TGP_COLOR_ENC_YCBCR,
 	TGP_COLOR_ENC_HSV,
 	TGP_COLOR_ENC_LUMA,
 };

 extern const char * const tpg_aspect_strings[];

 #define TPG_MAX_PLANES 3
 #define TPG_MAX_PAT_LINES 8

 struct tpg_data {
 	/* Source frame size */
 	unsigned			src_width, src_height;
 	/* Buffer height */
 	unsigned			buf_height;
 	/* Scaled output frame size */
 	unsigned			scaled_width;
 	u32				field;
 	bool				field_alternate;
 	/* crop coordinates are frame-based */
 	struct v4l2_rect		crop;
 	/* compose coordinates are format-based */
 	struct v4l2_rect		compose;
 	/* border and square coordinates are frame-based */
 	struct v4l2_rect		border;
 	struct v4l2_rect		square;

 	/* Color-related fields */
 	enum tpg_quality		qual;
 	unsigned			qual_offset;
 	u8				alpha_component;
 	bool				alpha_red_only;
 	u8				brightness;
 	u8				contrast;
 	u8				saturation;
 	s16				hue;
 	u32				fourcc;
 	enum tgp_color_enc		color_enc;
 	u32				colorspace;
 	u32				xfer_func;
 	u32				ycbcr_enc;
 	u32				hsv_enc;
 	/*
 	 * Stores the actual transfer function, i.e. will never be
 	 * V4L2_XFER_FUNC_DEFAULT.
 	 */
 	u32				real_xfer_func;
 	/*
 	 * Stores the actual Y'CbCr encoding, i.e. will never be
 	 * V4L2_YCBCR_ENC_DEFAULT.
 	 */
 	u32				real_hsv_enc;
 	u32				real_ycbcr_enc;
 	u32				quantization;
 	/*
 	 * Stores the actual quantization, i.e. will never be
 	 * V4L2_QUANTIZATION_DEFAULT.
 	 */
 	u32				real_quantization;
 	enum tpg_video_aspect		vid_aspect;
 	enum tpg_pixel_aspect		pix_aspect;
 	unsigned			rgb_range;
 	unsigned			real_rgb_range;
 	unsigned			buffers;
 	unsigned			planes;
 	bool				interleaved;
 	u8				vdownsampling[TPG_MAX_PLANES];
 	u8				hdownsampling[TPG_MAX_PLANES];
 	/*
 	 * horizontal positions must be ANDed with this value to enforce
 	 * correct boundaries for packed YUYV values.
 	 */
 	unsigned			hmask[TPG_MAX_PLANES];
 	/* Used to store the colors in native format, either RGB or YUV */
 	u8				colors[TPG_COLOR_MAX][3];
 	u8				textfg[TPG_MAX_PLANES][8], textbg[TPG_MAX_PLANES][8];
 	/* size in bytes for two pixels in each plane */
 	unsigned			twopixelsize[TPG_MAX_PLANES];
 	unsigned			bytesperline[TPG_MAX_PLANES];

 	/* Configuration */
 	enum tpg_pattern		pattern;
 	bool				hflip;
 	bool				vflip;
 	unsigned			perc_fill;
 	bool				perc_fill_blank;
 	bool				show_border;
 	bool				show_square;
 	bool				insert_sav;
 	bool				insert_eav;

 	/* Test pattern movement */
 	enum tpg_move_mode		mv_hor_mode;
 	int				mv_hor_count;
 	int				mv_hor_step;
 	enum tpg_move_mode		mv_vert_mode;
 	int				mv_vert_count;
 	int				mv_vert_step;

 	bool				recalc_colors;
 	bool				recalc_lines;
 	bool				recalc_square_border;

 	/* Used to store TPG_MAX_PAT_LINES lines, each with up to two planes */
 	unsigned			max_line_width;
 	u8				*lines[TPG_MAX_PAT_LINES][TPG_MAX_PLANES];
 	u8				*downsampled_lines[TPG_MAX_PAT_LINES][TPG_MAX_PLANES];
 	u8				*random_line[TPG_MAX_PLANES];
 	u8				*contrast_line[TPG_MAX_PLANES];
 	u8				*black_line[TPG_MAX_PLANES];
 };

 void tpg_init(struct tpg_data *tpg, unsigned w, unsigned h);
 int tpg_alloc(struct tpg_data *tpg, unsigned max_w);
 void tpg_free(struct tpg_data *tpg);
 void tpg_reset_source(struct tpg_data *tpg, unsigned width, unsigned height,
 		       u32 field);
 void tpg_log_status(struct tpg_data *tpg);

 void tpg_set_font(const u8 *f);
 void tpg_gen_text(const struct tpg_data *tpg,
 		u8 *basep[TPG_MAX_PLANES][2], int y, int x, char *text);
 void tpg_calc_text_basep(struct tpg_data *tpg,
 		u8 *basep[TPG_MAX_PLANES][2], unsigned p, u8 *vbuf);
 unsigned tpg_g_interleaved_plane(const struct tpg_data *tpg, unsigned buf_line);
 void tpg_fill_plane_buffer(struct tpg_data *tpg, v4l2_std_id std,
 			   unsigned p, u8 *vbuf);
 void tpg_fillbuffer(struct tpg_data *tpg, v4l2_std_id std,
 		    unsigned p, u8 *vbuf);
 bool tpg_s_fourcc(struct tpg_data *tpg, u32 fourcc);
 void tpg_s_crop_compose(struct tpg_data *tpg, const struct v4l2_rect *crop,
 		const struct v4l2_rect *compose);

 static inline void tpg_s_pattern(struct tpg_data *tpg, enum tpg_pattern pattern)
 {
 	if (tpg->pattern == pattern)
 		return;
 	tpg->pattern = pattern;
 	tpg->recalc_colors = true;
 }

 static inline void tpg_s_quality(struct tpg_data *tpg,
 				    enum tpg_quality qual, unsigned qual_offset)
 {
 	if (tpg->qual == qual && tpg->qual_offset == qual_offset)
 		return;
 	tpg->qual = qual;
 	tpg->qual_offset = qual_offset;
 	tpg->recalc_colors = true;
 }

 static inline enum tpg_quality tpg_g_quality(const struct tpg_data *tpg)
 {
 	return tpg->qual;
 }

 static inline void tpg_s_alpha_component(struct tpg_data *tpg,
 					    u8 alpha_component)
 {
 	if (tpg->alpha_component == alpha_component)
 		return;
 	tpg->alpha_component = alpha_component;
 	tpg->recalc_colors = true;
 }

 static inline void tpg_s_alpha_mode(struct tpg_data *tpg,
 					    bool red_only)
 {
 	if (tpg->alpha_red_only == red_only)
 		return;
 	tpg->alpha_red_only = red_only;
 	tpg->recalc_colors = true;
 }

 static inline void tpg_s_brightness(struct tpg_data *tpg,
 					u8 brightness)
 {
 	if (tpg->brightness == brightness)
 		return;
 	tpg->brightness = brightness;
 	tpg->recalc_colors = true;
 }

 static inline void tpg_s_contrast(struct tpg_data *tpg,
 					u8 contrast)
 {
 	if (tpg->contrast == contrast)
 		return;
 	tpg->contrast = contrast;
 	tpg->recalc_colors = true;
 }

 static inline void tpg_s_saturation(struct tpg_data *tpg,
 					u8 saturation)
 {
 	if (tpg->saturation == saturation)
 		return;
 	tpg->saturation = saturation;
 	tpg->recalc_colors = true;
 }

 static inline void tpg_s_hue(struct tpg_data *tpg,
 					s16 hue)
 {
 	if (tpg->hue == hue)
 		return;
 	tpg->hue = hue;
 	tpg->recalc_colors = true;
 }

 static inline void tpg_s_rgb_range(struct tpg_data *tpg,
 					unsigned rgb_range)
 {
 	if (tpg->rgb_range == rgb_range)
 		return;
 	tpg->rgb_range = rgb_range;
 	tpg->recalc_colors = true;
 }

 static inline void tpg_s_real_rgb_range(struct tpg_data *tpg,
 					unsigned rgb_range)
 {
 	if (tpg->real_rgb_range == rgb_range)
 		return;
 	tpg->real_rgb_range = rgb_range;
 	tpg->recalc_colors = true;
 }

 static inline void tpg_s_colorspace(struct tpg_data *tpg, u32 colorspace)
 {
 	if (tpg->colorspace == colorspace)
 		return;
 	tpg->colorspace = colorspace;
 	tpg->recalc_colors = true;
 }

 static inline u32 tpg_g_colorspace(const struct tpg_data *tpg)
 {
 	return tpg->colorspace;
 }

 static inline void tpg_s_ycbcr_enc(struct tpg_data *tpg, u32 ycbcr_enc)
 {
 	if (tpg->ycbcr_enc == ycbcr_enc)
 		return;
 	tpg->ycbcr_enc = ycbcr_enc;
 	tpg->recalc_colors = true;
 }

 static inline u32 tpg_g_ycbcr_enc(const struct tpg_data *tpg)
 {
 	return tpg->ycbcr_enc;
 }

 static inline void tpg_s_hsv_enc(struct tpg_data *tpg, u32 hsv_enc)
 {
 	if (tpg->hsv_enc == hsv_enc)
 		return;
 	tpg->hsv_enc = hsv_enc;
 	tpg->recalc_colors = true;
 }

 static inline u32 tpg_g_hsv_enc(const struct tpg_data *tpg)
 {
 	return tpg->hsv_enc;
 }

 static inline void tpg_s_xfer_func(struct tpg_data *tpg, u32 xfer_func)
 {
 	if (tpg->xfer_func == xfer_func)
 		return;
 	tpg->xfer_func = xfer_func;
 	tpg->recalc_colors = true;
 }

 static inline u32 tpg_g_xfer_func(const struct tpg_data *tpg)
 {
 	return tpg->xfer_func;
 }

 static inline void tpg_s_quantization(struct tpg_data *tpg, u32 quantization)
 {
 	if (tpg->quantization == quantization)
 		return;
 	tpg->quantization = quantization;
 	tpg->recalc_colors = true;
 }

 static inline u32 tpg_g_quantization(const struct tpg_data *tpg)
 {
 	return tpg->quantization;
 }

 static inline unsigned tpg_g_buffers(const struct tpg_data *tpg)
 {
 	return tpg->buffers;
 }

 static inline unsigned tpg_g_planes(const struct tpg_data *tpg)
 {
 	return tpg->interleaved ? 1 : tpg->planes;
 }

 static inline bool tpg_g_interleaved(const struct tpg_data *tpg)
 {
 	return tpg->interleaved;
 }

 static inline unsigned tpg_g_twopixelsize(const struct tpg_data *tpg, unsigned plane)
 {
 	return tpg->twopixelsize[plane];
 }

 static inline unsigned tpg_hdiv(const struct tpg_data *tpg,
 				  unsigned plane, unsigned x)
 {
 	return ((x / tpg->hdownsampling[plane]) & tpg->hmask[plane]) *
 		tpg->twopixelsize[plane] / 2;
 }

 static inline unsigned tpg_hscale(const struct tpg_data *tpg, unsigned x)
 {
 	return (x * tpg->scaled_width) / tpg->src_width;
 }

 static inline unsigned tpg_hscale_div(const struct tpg_data *tpg,
 				      unsigned plane, unsigned x)
 {
 	return tpg_hdiv(tpg, plane, tpg_hscale(tpg, x));
 }

 static inline unsigned tpg_g_bytesperline(const struct tpg_data *tpg, unsigned plane)
 {
 	return tpg->bytesperline[plane];
 }

 static inline void tpg_s_bytesperline(struct tpg_data *tpg, unsigned plane, unsigned bpl)
 {
 	unsigned p;

 	if (tpg->buffers > 1) {
 		tpg->bytesperline[plane] = bpl;
 		return;
 	}

 	for (p = 0; p < tpg_g_planes(tpg); p++) {
 		unsigned plane_w = bpl * tpg->twopixelsize[p] / tpg->twopixelsize[0];

 		tpg->bytesperline[p] = plane_w / tpg->hdownsampling[p];
 	}
 	if (tpg_g_interleaved(tpg))
 		tpg->bytesperline[1] = tpg->bytesperline[0];
 }


 static inline unsigned tpg_g_line_width(const struct tpg_data *tpg, unsigned plane)
 {
 	unsigned w = 0;
 	unsigned p;

 	if (tpg->buffers > 1)
 		return tpg_g_bytesperline(tpg, plane);
 	for (p = 0; p < tpg_g_planes(tpg); p++) {
 		unsigned plane_w = tpg_g_bytesperline(tpg, p);

 		w += plane_w / tpg->vdownsampling[p];
 	}
 	return w;
 }

 static inline unsigned tpg_calc_line_width(const struct tpg_data *tpg,
 					   unsigned plane, unsigned bpl)
 {
 	unsigned w = 0;
 	unsigned p;

 	if (tpg->buffers > 1)
 		return bpl;
 	for (p = 0; p < tpg_g_planes(tpg); p++) {
 		unsigned plane_w = bpl * tpg->twopixelsize[p] / tpg->twopixelsize[0];

 		plane_w /= tpg->hdownsampling[p];
 		w += plane_w / tpg->vdownsampling[p];
 	}
 	return w;
 }

 static inline unsigned tpg_calc_plane_size(const struct tpg_data *tpg, unsigned plane)
 {
 	if (plane >= tpg_g_planes(tpg))
 		return 0;

 	return tpg_g_bytesperline(tpg, plane) * tpg->buf_height /
 	       tpg->vdownsampling[plane];
 }

 static inline void tpg_s_buf_height(struct tpg_data *tpg, unsigned h)
 {
 	tpg->buf_height = h;
 }

 static inline void tpg_s_field(struct tpg_data *tpg, unsigned field, bool alternate)
 {
 	tpg->field = field;
 	tpg->field_alternate = alternate;
 }

 static inline void tpg_s_perc_fill(struct tpg_data *tpg,
 				      unsigned perc_fill)
 {
 	tpg->perc_fill = perc_fill;
 }

 static inline unsigned tpg_g_perc_fill(const struct tpg_data *tpg)
 {
 	return tpg->perc_fill;
 }

 static inline void tpg_s_perc_fill_blank(struct tpg_data *tpg,
 					 bool perc_fill_blank)
 {
 	tpg->perc_fill_blank = perc_fill_blank;
 }

 static inline void tpg_s_video_aspect(struct tpg_data *tpg,
 					enum tpg_video_aspect vid_aspect)
 {
 	if (tpg->vid_aspect == vid_aspect)
 		return;
 	tpg->vid_aspect = vid_aspect;
 	tpg->recalc_square_border = true;
 }

 static inline enum tpg_video_aspect tpg_g_video_aspect(const struct tpg_data *tpg)
 {
 	return tpg->vid_aspect;
 }

 static inline void tpg_s_pixel_aspect(struct tpg_data *tpg,
 					enum tpg_pixel_aspect pix_aspect)
 {
 	if (tpg->pix_aspect == pix_aspect)
 		return;
 	tpg->pix_aspect = pix_aspect;
 	tpg->recalc_square_border = true;
 }

 static inline void tpg_s_show_border(struct tpg_data *tpg,
 					bool show_border)
 {
 	tpg->show_border = show_border;
 }

 static inline void tpg_s_show_square(struct tpg_data *tpg,
 					bool show_square)
 {
 	tpg->show_square = show_square;
 }

 static inline void tpg_s_insert_sav(struct tpg_data *tpg, bool insert_sav)
 {
 	tpg->insert_sav = insert_sav;
 }

 static inline void tpg_s_insert_eav(struct tpg_data *tpg, bool insert_eav)
 {
 	tpg->insert_eav = insert_eav;
 }

 void tpg_update_mv_step(struct tpg_data *tpg);

 static inline void tpg_s_mv_hor_mode(struct tpg_data *tpg,
 				enum tpg_move_mode mv_hor_mode)
 {
 	tpg->mv_hor_mode = mv_hor_mode;
 	tpg_update_mv_step(tpg);
 }

 static inline void tpg_s_mv_vert_mode(struct tpg_data *tpg,
 				enum tpg_move_mode mv_vert_mode)
 {
 	tpg->mv_vert_mode = mv_vert_mode;
 	tpg_update_mv_step(tpg);
 }

 static inline void tpg_init_mv_count(struct tpg_data *tpg)
 {
 	tpg->mv_hor_count = tpg->mv_vert_count = 0;
 }

 static inline void tpg_update_mv_count(struct tpg_data *tpg, bool frame_is_field)
 {
 	tpg->mv_hor_count += tpg->mv_hor_step * (frame_is_field ? 1 : 2);
 	tpg->mv_vert_count += tpg->mv_vert_step * (frame_is_field ? 1 : 2);
 }

 static inline void tpg_s_hflip(struct tpg_data *tpg, bool hflip)
 {
 	if (tpg->hflip == hflip)
 		return;
 	tpg->hflip = hflip;
 	tpg_update_mv_step(tpg);
 	tpg->recalc_lines = true;
 }

 static inline bool tpg_g_hflip(const struct tpg_data *tpg)
 {
 	return tpg->hflip;
 }

 static inline void tpg_s_vflip(struct tpg_data *tpg, bool vflip)
 {
 	tpg->vflip = vflip;
 }

 static inline bool tpg_g_vflip(const struct tpg_data *tpg)
 {
 	return tpg->vflip;
 }

 static inline bool tpg_pattern_is_static(const struct tpg_data *tpg)
 {
 	return tpg->pattern != TPG_PAT_NOISE &&
 	       tpg->mv_hor_mode == TPG_MOVE_NONE &&
 	       tpg->mv_vert_mode == TPG_MOVE_NONE;
 }

 #endif
	/*
	* v4l2-tpg.h - Test Pattern Generator
	*
	* Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
	*
	* This program is free software; you may redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; version 2 of the License.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	* SOFTWARE.
	*/

	#ifndef _V4L2_TPG_H_
	#define _V4L2_TPG_H_

	#include <linux/types.h>
	#include <linux/errno.h>
	#include <linux/random.h>
	#include <linux/slab.h>
	#include <linux/vmalloc.h>
	#include <linux/videodev2.h>
	#include <media/v4l2-tpg-colors.h>

	enum tpg_pattern {
	TPG_PAT_75_COLORBAR,
	TPG_PAT_100_COLORBAR,
	TPG_PAT_CSC_COLORBAR,
	TPG_PAT_100_HCOLORBAR,
	TPG_PAT_100_COLORSQUARES,
	TPG_PAT_BLACK,
	TPG_PAT_WHITE,
	TPG_PAT_RED,
	TPG_PAT_GREEN,
	TPG_PAT_BLUE,
	TPG_PAT_CHECKERS_16X16,
	TPG_PAT_CHECKERS_2X2,
	TPG_PAT_CHECKERS_1X1,
	TPG_PAT_COLOR_CHECKERS_2X2,
	TPG_PAT_COLOR_CHECKERS_1X1,
	TPG_PAT_ALTERNATING_HLINES,
	TPG_PAT_ALTERNATING_VLINES,
	TPG_PAT_CROSS_1_PIXEL,
	TPG_PAT_CROSS_2_PIXELS,
	TPG_PAT_CROSS_10_PIXELS,
	TPG_PAT_GRAY_RAMP,

	/* Must be the last pattern */
	TPG_PAT_NOISE,
	};

	extern const char * const tpg_pattern_strings[];

	enum tpg_quality {
	TPG_QUAL_COLOR,
	TPG_QUAL_GRAY,
	TPG_QUAL_NOISE
	};

	enum tpg_video_aspect {
	TPG_VIDEO_ASPECT_IMAGE,
	TPG_VIDEO_ASPECT_4X3,
	TPG_VIDEO_ASPECT_14X9_CENTRE,
	TPG_VIDEO_ASPECT_16X9_CENTRE,
	TPG_VIDEO_ASPECT_16X9_ANAMORPHIC,
	};

	enum tpg_pixel_aspect {
	TPG_PIXEL_ASPECT_SQUARE,
	TPG_PIXEL_ASPECT_NTSC,
	TPG_PIXEL_ASPECT_PAL,
	};

	enum tpg_move_mode {
	TPG_MOVE_NEG_FAST,
	TPG_MOVE_NEG,
	TPG_MOVE_NEG_SLOW,
	TPG_MOVE_NONE,
	TPG_MOVE_POS_SLOW,
	TPG_MOVE_POS,
	TPG_MOVE_POS_FAST,
	};

	enum tgp_color_enc {
	TGP_COLOR_ENC_RGB,
	TGP_COLOR_ENC_YCBCR,
	TGP_COLOR_ENC_HSV,
	TGP_COLOR_ENC_LUMA,
	};

	extern const char * const tpg_aspect_strings[];

	#define TPG_MAX_PLANES 3
	#define TPG_MAX_PAT_LINES 8

	struct tpg_data {
	/* Source frame size */
	unsigned src_width, src_height;
	/* Buffer height */
	unsigned buf_height;
	/* Scaled output frame size */
	unsigned scaled_width;
	u32 field;
	bool field_alternate;
	/* crop coordinates are frame-based */
	struct v4l2_rect crop;
	/* compose coordinates are format-based */
	struct v4l2_rect compose;
	/* border and square coordinates are frame-based */
	struct v4l2_rect border;
	struct v4l2_rect square;

	/* Color-related fields */
	enum tpg_quality qual;
	unsigned qual_offset;
	u8 alpha_component;
	bool alpha_red_only;
	u8 brightness;
	u8 contrast;
	u8 saturation;
	s16 hue;
	u32 fourcc;
	enum tgp_color_enc color_enc;
	u32 colorspace;
	u32 xfer_func;
	u32 ycbcr_enc;
	u32 hsv_enc;
	/*
	* Stores the actual transfer function, i.e. will never be
	* V4L2_XFER_FUNC_DEFAULT.
	*/
	u32 real_xfer_func;
	/*
	* Stores the actual Y'CbCr encoding, i.e. will never be
	* V4L2_YCBCR_ENC_DEFAULT.
	*/
	u32 real_hsv_enc;
	u32 real_ycbcr_enc;
	u32 quantization;
	/*
	* Stores the actual quantization, i.e. will never be
	* V4L2_QUANTIZATION_DEFAULT.
	*/
	u32 real_quantization;
	enum tpg_video_aspect vid_aspect;
	enum tpg_pixel_aspect pix_aspect;
	unsigned rgb_range;
	unsigned real_rgb_range;
	unsigned buffers;
	unsigned planes;
	bool interleaved;
	u8 vdownsampling[TPG_MAX_PLANES];
	u8 hdownsampling[TPG_MAX_PLANES];
	/*
	* horizontal positions must be ANDed with this value to enforce
	* correct boundaries for packed YUYV values.
	*/
	unsigned hmask[TPG_MAX_PLANES];
	/* Used to store the colors in native format, either RGB or YUV */
	u8 colors[TPG_COLOR_MAX][3];
	u8 textfg[TPG_MAX_PLANES][8], textbg[TPG_MAX_PLANES][8];
	/* size in bytes for two pixels in each plane */
	unsigned twopixelsize[TPG_MAX_PLANES];
	unsigned bytesperline[TPG_MAX_PLANES];

	/* Configuration */
	enum tpg_pattern pattern;
	bool hflip;
	bool vflip;
	unsigned perc_fill;
	bool perc_fill_blank;
	bool show_border;
	bool show_square;
	bool insert_sav;
	bool insert_eav;

	/* Test pattern movement */
	enum tpg_move_mode mv_hor_mode;
	int mv_hor_count;
	int mv_hor_step;
	enum tpg_move_mode mv_vert_mode;
	int mv_vert_count;
	int mv_vert_step;

	bool recalc_colors;
	bool recalc_lines;
	bool recalc_square_border;

	/* Used to store TPG_MAX_PAT_LINES lines, each with up to two planes */
	unsigned max_line_width;
	u8 *lines[TPG_MAX_PAT_LINES][TPG_MAX_PLANES];
	u8 *downsampled_lines[TPG_MAX_PAT_LINES][TPG_MAX_PLANES];
	u8 *random_line[TPG_MAX_PLANES];
	u8 *contrast_line[TPG_MAX_PLANES];
	u8 *black_line[TPG_MAX_PLANES];
	};

	void tpg_init(struct tpg_data *tpg, unsigned w, unsigned h);
	int tpg_alloc(struct tpg_data *tpg, unsigned max_w);
	void tpg_free(struct tpg_data *tpg);
	void tpg_reset_source(struct tpg_data *tpg, unsigned width, unsigned height,
	u32 field);
	void tpg_log_status(struct tpg_data *tpg);

	void tpg_set_font(const u8 *f);
	void tpg_gen_text(const struct tpg_data *tpg,
	u8 basep[TPG_MAX_PLANES][2], int y, int x, char text);
	void tpg_calc_text_basep(struct tpg_data *tpg,
	u8 basep[TPG_MAX_PLANES][2], unsigned p, u8 vbuf);
	unsigned tpg_g_interleaved_plane(const struct tpg_data *tpg, unsigned buf_line);
	void tpg_fill_plane_buffer(struct tpg_data *tpg, v4l2_std_id std,
	unsigned p, u8 *vbuf);
	void tpg_fillbuffer(struct tpg_data *tpg, v4l2_std_id std,
	unsigned p, u8 *vbuf);
	bool tpg_s_fourcc(struct tpg_data *tpg, u32 fourcc);
	void tpg_s_crop_compose(struct tpg_data tpg, const struct v4l2_rect crop,
	const struct v4l2_rect *compose);

	static inline void tpg_s_pattern(struct tpg_data *tpg, enum tpg_pattern pattern)
	{
	if (tpg->pattern == pattern)
	return;
	tpg->pattern = pattern;
	tpg->recalc_colors = true;
	}

	static inline void tpg_s_quality(struct tpg_data *tpg,
	enum tpg_quality qual, unsigned qual_offset)
	{
	if (tpg->qual == qual && tpg->qual_offset == qual_offset)
	return;
	tpg->qual = qual;
	tpg->qual_offset = qual_offset;
	tpg->recalc_colors = true;
	}

	static inline enum tpg_quality tpg_g_quality(const struct tpg_data *tpg)
	{
	return tpg->qual;
	}

	static inline void tpg_s_alpha_component(struct tpg_data *tpg,
	u8 alpha_component)
	{
	if (tpg->alpha_component == alpha_component)
	return;
	tpg->alpha_component = alpha_component;
	tpg->recalc_colors = true;
	}

	static inline void tpg_s_alpha_mode(struct tpg_data *tpg,
	bool red_only)
	{
	if (tpg->alpha_red_only == red_only)
	return;
	tpg->alpha_red_only = red_only;
	tpg->recalc_colors = true;
	}

	static inline void tpg_s_brightness(struct tpg_data *tpg,
	u8 brightness)
	{
	if (tpg->brightness == brightness)
	return;
	tpg->brightness = brightness;
	tpg->recalc_colors = true;
	}

	static inline void tpg_s_contrast(struct tpg_data *tpg,
	u8 contrast)
	{
	if (tpg->contrast == contrast)
	return;
	tpg->contrast = contrast;
	tpg->recalc_colors = true;
	}

	static inline void tpg_s_saturation(struct tpg_data *tpg,
	u8 saturation)
	{
	if (tpg->saturation == saturation)
	return;
	tpg->saturation = saturation;
	tpg->recalc_colors = true;
	}

	static inline void tpg_s_hue(struct tpg_data *tpg,
	s16 hue)
	{
	if (tpg->hue == hue)
	return;
	tpg->hue = hue;
	tpg->recalc_colors = true;
	}

	static inline void tpg_s_rgb_range(struct tpg_data *tpg,
	unsigned rgb_range)
	{
	if (tpg->rgb_range == rgb_range)
	return;
	tpg->rgb_range = rgb_range;
	tpg->recalc_colors = true;
	}

	static inline void tpg_s_real_rgb_range(struct tpg_data *tpg,
	unsigned rgb_range)
	{
	if (tpg->real_rgb_range == rgb_range)
	return;
	tpg->real_rgb_range = rgb_range;
	tpg->recalc_colors = true;
	}

	static inline void tpg_s_colorspace(struct tpg_data *tpg, u32 colorspace)
	{
	if (tpg->colorspace == colorspace)
	return;
	tpg->colorspace = colorspace;
	tpg->recalc_colors = true;
	}

	static inline u32 tpg_g_colorspace(const struct tpg_data *tpg)
	{
	return tpg->colorspace;
	}

	static inline void tpg_s_ycbcr_enc(struct tpg_data *tpg, u32 ycbcr_enc)
	{
	if (tpg->ycbcr_enc == ycbcr_enc)
	return;
	tpg->ycbcr_enc = ycbcr_enc;
	tpg->recalc_colors = true;
	}

	static inline u32 tpg_g_ycbcr_enc(const struct tpg_data *tpg)
	{
	return tpg->ycbcr_enc;
	}

	static inline void tpg_s_hsv_enc(struct tpg_data *tpg, u32 hsv_enc)
	{
	if (tpg->hsv_enc == hsv_enc)
	return;
	tpg->hsv_enc = hsv_enc;
	tpg->recalc_colors = true;
	}

	static inline u32 tpg_g_hsv_enc(const struct tpg_data *tpg)
	{
	return tpg->hsv_enc;
	}

	static inline void tpg_s_xfer_func(struct tpg_data *tpg, u32 xfer_func)
	{
	if (tpg->xfer_func == xfer_func)
	return;
	tpg->xfer_func = xfer_func;
	tpg->recalc_colors = true;
	}

	static inline u32 tpg_g_xfer_func(const struct tpg_data *tpg)
	{
	return tpg->xfer_func;
	}

	static inline void tpg_s_quantization(struct tpg_data *tpg, u32 quantization)
	{
	if (tpg->quantization == quantization)
	return;
	tpg->quantization = quantization;
	tpg->recalc_colors = true;
	}

	static inline u32 tpg_g_quantization(const struct tpg_data *tpg)
	{
	return tpg->quantization;
	}

	static inline unsigned tpg_g_buffers(const struct tpg_data *tpg)
	{
	return tpg->buffers;
	}

	static inline unsigned tpg_g_planes(const struct tpg_data *tpg)
	{
	return tpg->interleaved ? 1 : tpg->planes;
	}

	static inline bool tpg_g_interleaved(const struct tpg_data *tpg)
	{
	return tpg->interleaved;
	}

	static inline unsigned tpg_g_twopixelsize(const struct tpg_data *tpg, unsigned plane)
	{
	return tpg->twopixelsize[plane];
	}

	static inline unsigned tpg_hdiv(const struct tpg_data *tpg,
	unsigned plane, unsigned x)
	{
	return ((x / tpg->hdownsampling[plane]) & tpg->hmask[plane]) *
	tpg->twopixelsize[plane] / 2;
	}

	static inline unsigned tpg_hscale(const struct tpg_data *tpg, unsigned x)
	{
	return (x * tpg->scaled_width) / tpg->src_width;
	}

	static inline unsigned tpg_hscale_div(const struct tpg_data *tpg,
	unsigned plane, unsigned x)
	{
	return tpg_hdiv(tpg, plane, tpg_hscale(tpg, x));
	}

	static inline unsigned tpg_g_bytesperline(const struct tpg_data *tpg, unsigned plane)
	{
	return tpg->bytesperline[plane];
	}

	static inline void tpg_s_bytesperline(struct tpg_data *tpg, unsigned plane, unsigned bpl)
	{
	unsigned p;

	if (tpg->buffers > 1) {
	tpg->bytesperline[plane] = bpl;
	return;
	}

	for (p = 0; p < tpg_g_planes(tpg); p++) {
	unsigned plane_w = bpl * tpg->twopixelsize[p] / tpg->twopixelsize[0];

	tpg->bytesperline[p] = plane_w / tpg->hdownsampling[p];
	}
	if (tpg_g_interleaved(tpg))
	tpg->bytesperline[1] = tpg->bytesperline[0];
	}


	static inline unsigned tpg_g_line_width(const struct tpg_data *tpg, unsigned plane)
	{
	unsigned w = 0;
	unsigned p;

	if (tpg->buffers > 1)
	return tpg_g_bytesperline(tpg, plane);
	for (p = 0; p < tpg_g_planes(tpg); p++) {
	unsigned plane_w = tpg_g_bytesperline(tpg, p);

	w += plane_w / tpg->vdownsampling[p];
	}
	return w;
	}

	static inline unsigned tpg_calc_line_width(const struct tpg_data *tpg,
	unsigned plane, unsigned bpl)
	{
	unsigned w = 0;
	unsigned p;

	if (tpg->buffers > 1)
	return bpl;
	for (p = 0; p < tpg_g_planes(tpg); p++) {
	unsigned plane_w = bpl * tpg->twopixelsize[p] / tpg->twopixelsize[0];

	plane_w /= tpg->hdownsampling[p];
	w += plane_w / tpg->vdownsampling[p];
	}
	return w;
	}

	static inline unsigned tpg_calc_plane_size(const struct tpg_data *tpg, unsigned plane)
	{
	if (plane >= tpg_g_planes(tpg))
	return 0;

	return tpg_g_bytesperline(tpg, plane) * tpg->buf_height /
	tpg->vdownsampling[plane];
	}

	static inline void tpg_s_buf_height(struct tpg_data *tpg, unsigned h)
	{
	tpg->buf_height = h;
	}

	static inline void tpg_s_field(struct tpg_data *tpg, unsigned field, bool alternate)
	{
	tpg->field = field;
	tpg->field_alternate = alternate;
	}

	static inline void tpg_s_perc_fill(struct tpg_data *tpg,
	unsigned perc_fill)
	{
	tpg->perc_fill = perc_fill;
	}

	static inline unsigned tpg_g_perc_fill(const struct tpg_data *tpg)
	{
	return tpg->perc_fill;
	}

	static inline void tpg_s_perc_fill_blank(struct tpg_data *tpg,
	bool perc_fill_blank)
	{
	tpg->perc_fill_blank = perc_fill_blank;
	}

	static inline void tpg_s_video_aspect(struct tpg_data *tpg,
	enum tpg_video_aspect vid_aspect)
	{
	if (tpg->vid_aspect == vid_aspect)
	return;
	tpg->vid_aspect = vid_aspect;
	tpg->recalc_square_border = true;
	}

	static inline enum tpg_video_aspect tpg_g_video_aspect(const struct tpg_data *tpg)
	{
	return tpg->vid_aspect;
	}

	static inline void tpg_s_pixel_aspect(struct tpg_data *tpg,
	enum tpg_pixel_aspect pix_aspect)
	{
	if (tpg->pix_aspect == pix_aspect)
	return;
	tpg->pix_aspect = pix_aspect;
	tpg->recalc_square_border = true;
	}

	static inline void tpg_s_show_border(struct tpg_data *tpg,
	bool show_border)
	{
	tpg->show_border = show_border;
	}

	static inline void tpg_s_show_square(struct tpg_data *tpg,
	bool show_square)
	{
	tpg->show_square = show_square;
	}

	static inline void tpg_s_insert_sav(struct tpg_data *tpg, bool insert_sav)
	{
	tpg->insert_sav = insert_sav;
	}

	static inline void tpg_s_insert_eav(struct tpg_data *tpg, bool insert_eav)
	{
	tpg->insert_eav = insert_eav;
	}

	void tpg_update_mv_step(struct tpg_data *tpg);

	static inline void tpg_s_mv_hor_mode(struct tpg_data *tpg,
	enum tpg_move_mode mv_hor_mode)
	{
	tpg->mv_hor_mode = mv_hor_mode;
	tpg_update_mv_step(tpg);
	}

	static inline void tpg_s_mv_vert_mode(struct tpg_data *tpg,
	enum tpg_move_mode mv_vert_mode)
	{
	tpg->mv_vert_mode = mv_vert_mode;
	tpg_update_mv_step(tpg);
	}

	static inline void tpg_init_mv_count(struct tpg_data *tpg)
	{
	tpg->mv_hor_count = tpg->mv_vert_count = 0;
	}

	static inline void tpg_update_mv_count(struct tpg_data *tpg, bool frame_is_field)
	{
	tpg->mv_hor_count += tpg->mv_hor_step * (frame_is_field ? 1 : 2);
	tpg->mv_vert_count += tpg->mv_vert_step * (frame_is_field ? 1 : 2);
	}

	static inline void tpg_s_hflip(struct tpg_data *tpg, bool hflip)
	{
	if (tpg->hflip == hflip)
	return;
	tpg->hflip = hflip;
	tpg_update_mv_step(tpg);
	tpg->recalc_lines = true;
	}

	static inline bool tpg_g_hflip(const struct tpg_data *tpg)
	{
	return tpg->hflip;
	}

	static inline void tpg_s_vflip(struct tpg_data *tpg, bool vflip)
	{
	tpg->vflip = vflip;
	}

	static inline bool tpg_g_vflip(const struct tpg_data *tpg)
	{
	return tpg->vflip;
	}

	static inline bool tpg_pattern_is_static(const struct tpg_data *tpg)
	{
	return tpg->pattern != TPG_PAT_NOISE &&
	tpg->mv_hor_mode == TPG_MOVE_NONE &&
	tpg->mv_vert_mode == TPG_MOVE_NONE;
	}

	#endif