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gstreamer/gst/videotestsrc/videotestsrc.c
Francisco Javier Velázquez-García 740ea66e73 videotestsrc.c: Correct left shift operator 
Use the left shift operator '<<' instead of the mistakenly typed less
than operator '<'.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/1047>
2021-02-23 14:53:43 +01:00

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/* non-GST-specific stuff */
#include "gstvideotestsrc.h"
#include "videotestsrc.h"
#include "gstvideotestsrcorc.h"
#include <gst/math-compat.h>
#include <string.h>
#include <stdlib.h>
#define TO_16(x) (((x)<<8) | (x))
static unsigned char
random_char (guint * state)
{
*state *= 1103515245;
*state += 12345;
return (*state >> 16) & 0xff;
}
enum
{
COLOR_WHITE = 0,
COLOR_YELLOW,
COLOR_CYAN,
COLOR_GREEN,
COLOR_MAGENTA,
COLOR_RED,
COLOR_BLUE,
COLOR_BLACK,
COLOR_NEG_I,
COLOR_POS_Q,
COLOR_SUPER_BLACK,
COLOR_DARK_GREY
};
static const struct vts_color_struct vts_colors_bt709_ycbcr_100[] = {
{235, 128, 128, 255, 255, 255, 255, (235 << 8)},
{219, 16, 138, 255, 255, 255, 0, (219 << 8)},
{188, 154, 16, 255, 0, 255, 255, (188 << 8)},
{173, 42, 26, 255, 0, 255, 0, (173 << 8)},
{78, 214, 230, 255, 255, 0, 255, (78 << 8)},
{63, 102, 240, 255, 255, 0, 0, (64 << 8)},
{32, 240, 118, 255, 0, 0, 255, (32 << 8)},
{16, 128, 128, 255, 0, 0, 0, (16 << 8)},
{16, 198, 21, 255, 0, 0, 128, (16 << 8)}, /* -I ? */
{16, 235, 198, 255, 0, 128, 255, (16 << 8)}, /* +Q ? */
{0, 128, 128, 255, 0, 0, 0, 0},
{32, 128, 128, 255, 19, 19, 19, (32 << 8)},
};
static const struct vts_color_struct vts_colors_bt709_ycbcr_75[] = {
{180, 128, 128, 255, 191, 191, 191, (180 << 8)},
{168, 44, 136, 255, 191, 191, 0, (168 << 8)},
{145, 147, 44, 255, 0, 191, 191, (145 << 8)},
{133, 63, 52, 255, 0, 191, 0, (133 << 8)},
{63, 193, 204, 255, 191, 0, 191, (63 << 8)},
{51, 109, 212, 255, 191, 0, 0, (51 << 8)},
{28, 212, 120, 255, 0, 0, 191, (28 << 8)},
{16, 128, 128, 255, 0, 0, 0, (16 << 8)},
{16, 198, 21, 255, 0, 0, 128, (16 << 8)}, /* -I ? */
{16, 235, 198, 255, 0, 128, 255, (16 << 8)}, /* +Q ? */
{0, 128, 128, 255, 0, 0, 0, 0},
{32, 128, 128, 255, 19, 19, 19, (32 << 8)},
};
static const struct vts_color_struct vts_colors_bt601_ycbcr_100[] = {
{235, 128, 128, 255, 255, 255, 255, (235 << 8)},
{210, 16, 146, 255, 255, 255, 0, (219 << 8)},
{170, 166, 16, 255, 0, 255, 255, (188 << 8)},
{145, 54, 34, 255, 0, 255, 0, (173 << 8)},
{106, 202, 222, 255, 255, 0, 255, (78 << 8)},
{81, 90, 240, 255, 255, 0, 0, (64 << 8)},
{41, 240, 110, 255, 0, 0, 255, (32 << 8)},
{16, 128, 128, 255, 0, 0, 0, (16 << 8)},
{16, 198, 21, 255, 0, 0, 128, (16 << 8)}, /* -I ? */
{16, 235, 198, 255, 0, 128, 255, (16 << 8)}, /* +Q ? */
{-0, 128, 128, 255, 0, 0, 0, 0},
{32, 128, 128, 255, 19, 19, 19, (32 << 8)},
};
static const struct vts_color_struct vts_colors_bt601_ycbcr_75[] = {
{180, 128, 128, 255, 191, 191, 191, (180 << 8)},
{162, 44, 142, 255, 191, 191, 0, (168 << 8)},
{131, 156, 44, 255, 0, 191, 191, (145 << 8)},
{112, 72, 58, 255, 0, 191, 0, (133 << 8)},
{84, 184, 198, 255, 191, 0, 191, (63 << 8)},
{65, 100, 212, 255, 191, 0, 0, (51 << 8)},
{35, 212, 114, 255, 0, 0, 191, (28 << 8)},
{16, 128, 128, 255, 0, 0, 0, (16 << 8)},
{16, 198, 21, 255, 0, 0, 128, (16 << 8)}, /* -I ? */
{16, 235, 198, 255, 0, 128, 255, (16 << 8)}, /* +Q ? */
{-0, 128, 128, 255, 0, 0, 0, 0},
{32, 128, 128, 255, 19, 19, 19, (32 << 8)},
};
static void paint_tmpline_ARGB (paintinfo * p, int x, int w);
static void paint_tmpline_AYUV (paintinfo * p, int x, int w);
static void convert_hline_generic (paintinfo * p, GstVideoFrame * frame, int y);
static void convert_hline_bayer (paintinfo * p, GstVideoFrame * frame, int y);
#define SCALEBITS 10
#define ONE_HALF (1 << (SCALEBITS - 1))
#define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
#define RGB_TO_Y(r, g, b) \
((FIX(0.29900) * (r) + FIX(0.58700) * (g) + \
FIX(0.11400) * (b) + ONE_HALF) >> SCALEBITS)
#define RGB_TO_U(r1, g1, b1, shift)\
(((- FIX(0.16874) * r1 - FIX(0.33126) * g1 + \
FIX(0.50000) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
#define RGB_TO_V(r1, g1, b1, shift)\
(((FIX(0.50000) * r1 - FIX(0.41869) * g1 - \
FIX(0.08131) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
#define RGB_TO_Y_CCIR(r, g, b) \
((FIX(0.29900*219.0/255.0) * (r) + FIX(0.58700*219.0/255.0) * (g) + \
FIX(0.11400*219.0/255.0) * (b) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
#define RGB_TO_U_CCIR(r1, g1, b1, shift)\
(((- FIX(0.16874*224.0/255.0) * r1 - FIX(0.33126*224.0/255.0) * g1 + \
FIX(0.50000*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
#define RGB_TO_V_CCIR(r1, g1, b1, shift)\
(((FIX(0.50000*224.0/255.0) * r1 - FIX(0.41869*224.0/255.0) * g1 - \
FIX(0.08131*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
#define RGB_TO_Y_CCIR_709(r, g, b) \
((FIX(0.212600*219.0/255.0) * (r) + FIX(0.715200*219.0/255.0) * (g) + \
FIX(0.072200*219.0/255.0) * (b) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
#define RGB_TO_U_CCIR_709(r1, g1, b1, shift)\
(((- FIX(0.114572*224.0/255.0) * r1 - FIX(0.385427*224.0/255.0) * g1 + \
FIX(0.50000*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
#define RGB_TO_V_CCIR_709(r1, g1, b1, shift)\
(((FIX(0.50000*224.0/255.0) * r1 - FIX(0.454153*224.0/255.0) * g1 - \
FIX(0.045847*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
static void
videotestsrc_setup_paintinfo (GstVideoTestSrc * v, paintinfo * p, int w, int h)
{
gint a, r, g, b;
gint width;
GstVideoInfo *info = &v->info;
width = GST_VIDEO_INFO_WIDTH (info);
if (info->colorimetry.matrix == GST_VIDEO_COLOR_MATRIX_BT601) {
p->colors = vts_colors_bt601_ycbcr_100;
} else {
p->colors = vts_colors_bt709_ycbcr_100;
}
if (v->bayer) {
p->paint_tmpline = paint_tmpline_ARGB;
p->convert_tmpline = convert_hline_bayer;
} else {
p->convert_tmpline = convert_hline_generic;
if (GST_VIDEO_INFO_IS_RGB (info)) {
p->paint_tmpline = paint_tmpline_ARGB;
} else {
p->paint_tmpline = paint_tmpline_AYUV;
}
}
p->tmpline = v->tmpline;
p->tmpline2 = v->tmpline2;
p->tmpline_u8 = v->tmpline_u8;
p->tmpline_u16 = v->tmpline_u16;
p->n_lines = v->n_lines;
p->offset = v->offset;
p->lines = v->lines;
p->x_offset = (v->horizontal_speed * v->n_frames) % width;
if (p->x_offset < 0)
p->x_offset += width;
p->x_invert = v->x_invert;
p->y_invert = v->y_invert;
a = (v->foreground_color >> 24) & 0xff;
r = (v->foreground_color >> 16) & 0xff;
g = (v->foreground_color >> 8) & 0xff;
b = (v->foreground_color >> 0) & 0xff;
p->foreground_color.A = a;
p->foreground_color.R = r;
p->foreground_color.G = g;
p->foreground_color.B = b;
if (info->colorimetry.matrix == GST_VIDEO_COLOR_MATRIX_BT601) {
p->foreground_color.Y = RGB_TO_Y_CCIR (r, g, b);
p->foreground_color.U = RGB_TO_U_CCIR (r, g, b, 0);
p->foreground_color.V = RGB_TO_V_CCIR (r, g, b, 0);
} else {
p->foreground_color.Y = RGB_TO_Y_CCIR_709 (r, g, b);
p->foreground_color.U = RGB_TO_U_CCIR_709 (r, g, b, 0);
p->foreground_color.V = RGB_TO_V_CCIR_709 (r, g, b, 0);
}
p->foreground_color.gray = RGB_TO_Y (r, g, b);
a = (v->background_color >> 24) & 0xff;
r = (v->background_color >> 16) & 0xff;
g = (v->background_color >> 8) & 0xff;
b = (v->background_color >> 0) & 0xff;
p->background_color.A = a;
p->background_color.R = r;
p->background_color.G = g;
p->background_color.B = b;
if (info->colorimetry.matrix == GST_VIDEO_COLOR_MATRIX_BT601) {
p->background_color.Y = RGB_TO_Y_CCIR (r, g, b);
p->background_color.U = RGB_TO_U_CCIR (r, g, b, 0);
p->background_color.V = RGB_TO_V_CCIR (r, g, b, 0);
} else {
p->background_color.Y = RGB_TO_Y_CCIR_709 (r, g, b);
p->background_color.U = RGB_TO_U_CCIR_709 (r, g, b, 0);
p->background_color.V = RGB_TO_V_CCIR_709 (r, g, b, 0);
}
p->background_color.gray = RGB_TO_Y (r, g, b);
p->subsample = v->subsample;
}
static void
videotestsrc_convert_tmpline (paintinfo * p, GstVideoFrame * frame, int j)
{
int x = p->x_offset;
int i;
int width = frame->info.width;
int height = frame->info.height;
int n_lines = p->n_lines;
int offset = p->offset;
if (x != 0) {
memcpy (p->tmpline2, p->tmpline, width * 4);
memcpy (p->tmpline, p->tmpline2 + x * 4, (width - x) * 4);
memcpy (p->tmpline + (width - x) * 4, p->tmpline2, x * 4);
}
for (i = width; i < width + 5; i++) {
p->tmpline[4 * i + 0] = p->tmpline[4 * (width - 1) + 0];
p->tmpline[4 * i + 1] = p->tmpline[4 * (width - 1) + 1];
p->tmpline[4 * i + 2] = p->tmpline[4 * (width - 1) + 2];
p->tmpline[4 * i + 3] = p->tmpline[4 * (width - 1) + 3];
}
p->convert_tmpline (p, frame, j);
if (j == height - 1) {
while (j % n_lines - offset != n_lines - 1) {
j++;
p->convert_tmpline (p, frame, j);
}
}
}
#define BLEND1(a,b,x) ((a)*(x) + (b)*(255-(x)))
#define DIV255(x) (((x) + (((x)+128)>>8) + 128)>>8)
#define BLEND(a,b,x) DIV255(BLEND1(a,b,x))
#ifdef unused
static void
videotestsrc_blend_color (struct vts_color_struct *dest,
struct vts_color_struct *a, struct vts_color_struct *b, int x)
{
dest->Y = BLEND (a->Y, b->Y, x);
dest->U = BLEND (a->U, b->U, x);
dest->V = BLEND (a->V, b->V, x);
dest->R = BLEND (a->R, b->R, x);
dest->G = BLEND (a->G, b->G, x);
dest->B = BLEND (a->B, b->B, x);
dest->gray = BLEND (a->gray, b->gray, x);
}
#endif
static void
videotestsrc_blend_line (GstVideoTestSrc * v, guint8 * dest, guint8 * src,
struct vts_color_struct *a, struct vts_color_struct *b, int n)
{
int i;
if (v->bayer || GST_VIDEO_INFO_IS_RGB (&v->info)) {
for (i = 0; i < n; i++) {
dest[i * 4 + 0] = BLEND (a->A, b->A, src[i]);
dest[i * 4 + 1] = BLEND (a->R, b->R, src[i]);
dest[i * 4 + 2] = BLEND (a->G, b->G, src[i]);
dest[i * 4 + 3] = BLEND (a->B, b->B, src[i]);
}
} else {
for (i = 0; i < n; i++) {
dest[i * 4 + 0] = BLEND (a->A, b->A, src[i]);
dest[i * 4 + 1] = BLEND (a->Y, b->Y, src[i]);
dest[i * 4 + 2] = BLEND (a->U, b->U, src[i]);
dest[i * 4 + 3] = BLEND (a->V, b->V, src[i]);
}
}
#undef BLEND
}
void
gst_video_test_src_smpte (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int i;
int y1, y2;
int j;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
int w = frame->info.width, h = frame->info.height;
videotestsrc_setup_paintinfo (v, p, w, h);
y1 = 2 * h / 3;
y2 = 3 * h / 4;
/* color bars */
for (j = 0; j < y1; j++) {
for (i = 0; i < 7; i++) {
int x1 = i * w / 7;
int x2 = (i + 1) * w / 7;
p->color = p->colors + i;
p->paint_tmpline (p, x1, (x2 - x1));
}
videotestsrc_convert_tmpline (p, frame, j);
}
/* inverse blue bars */
for (j = y1; j < y2; j++) {
for (i = 0; i < 7; i++) {
int x1 = i * w / 7;
int x2 = (i + 1) * w / 7;
int k;
if (i & 1) {
k = 7;
} else {
k = 6 - i;
}
p->color = p->colors + k;
p->paint_tmpline (p, x1, (x2 - x1));
}
videotestsrc_convert_tmpline (p, frame, j);
}
for (j = y2; j < h; j++) {
/* -I, white, Q regions */
for (i = 0; i < 3; i++) {
int x1 = i * w / 6;
int x2 = (i + 1) * w / 6;
int k;
if (i == 0) {
k = 8;
} else if (i == 1) {
k = 0;
} else
k = 9;
p->color = p->colors + k;
p->paint_tmpline (p, x1, (x2 - x1));
}
/* superblack, black, dark grey */
for (i = 0; i < 3; i++) {
int x1 = w / 2 + i * w / 12;
int x2 = w / 2 + (i + 1) * w / 12;
int k;
if (i == 0) {
k = COLOR_SUPER_BLACK;
} else if (i == 1) {
k = COLOR_BLACK;
} else
k = COLOR_DARK_GREY;
p->color = p->colors + k;
p->paint_tmpline (p, x1, (x2 - x1));
}
{
int x1 = w * 3 / 4;
struct vts_color_struct color;
color = p->colors[COLOR_BLACK];
p->color = &color;
for (i = x1; i < w; i++) {
int y = random_char (&v->random_state);
p->tmpline_u8[i] = y;
}
videotestsrc_blend_line (v, p->tmpline + x1 * 4, p->tmpline_u8 + x1,
&p->foreground_color, &p->background_color, w - x1);
}
videotestsrc_convert_tmpline (p, frame, j);
}
}
void
gst_video_test_src_smpte75 (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int i;
int j;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
int w = frame->info.width, h = frame->info.height;
videotestsrc_setup_paintinfo (v, p, w, h);
if (v->info.colorimetry.matrix == GST_VIDEO_COLOR_MATRIX_BT601) {
p->colors = vts_colors_bt601_ycbcr_75;
} else {
p->colors = vts_colors_bt709_ycbcr_75;
}
/* color bars */
for (j = 0; j < h; j++) {
for (i = 0; i < 7; i++) {
int x1 = i * w / 7;
int x2 = (i + 1) * w / 7;
p->color = p->colors + i;
p->paint_tmpline (p, x1, (x2 - x1));
}
videotestsrc_convert_tmpline (p, frame, j);
}
}
void
gst_video_test_src_smpte100 (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int i;
int j;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
int w = frame->info.width, h = frame->info.height;
videotestsrc_setup_paintinfo (v, p, w, h);
/* color bars */
for (j = 0; j < h; j++) {
for (i = 0; i < 7; i++) {
int x1 = i * w / 7;
int x2 = (i + 1) * w / 7;
p->color = p->colors + i;
p->paint_tmpline (p, x1, (x2 - x1));
}
videotestsrc_convert_tmpline (p, frame, j);
}
}
void
gst_video_test_src_bar (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int j;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
int w = frame->info.width, h = frame->info.height;
videotestsrc_setup_paintinfo (v, p, w, h);
for (j = 0; j < h; j++) {
/* use fixed size for now */
int x2 = w / 7;
p->color = &p->foreground_color;
p->paint_tmpline (p, 0, x2);
p->color = &p->background_color;
p->paint_tmpline (p, x2, (w - x2));
videotestsrc_convert_tmpline (p, frame, j);
}
}
void
gst_video_test_src_snow (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int i;
int j;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
struct vts_color_struct color;
int w = frame->info.width, h = frame->info.height;
videotestsrc_setup_paintinfo (v, p, w, h);
color = p->colors[COLOR_BLACK];
p->color = &color;
for (j = 0; j < h; j++) {
for (i = 0; i < w; i++) {
int y = random_char (&v->random_state);
p->tmpline_u8[i] = y;
}
videotestsrc_blend_line (v, p->tmpline, p->tmpline_u8,
&p->foreground_color, &p->background_color, w);
videotestsrc_convert_tmpline (p, frame, j);
}
}
static void
gst_video_test_src_unicolor (GstVideoTestSrc * v, GstVideoFrame * frame,
int color_index)
{
int i;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
int w = frame->info.width, h = frame->info.height;
videotestsrc_setup_paintinfo (v, p, w, h);
p->color = p->colors + color_index;
if (color_index == COLOR_BLACK) {
p->color = &p->background_color;
}
if (color_index == COLOR_WHITE) {
p->color = &p->foreground_color;
}
for (i = 0; i < h; i++) {
p->paint_tmpline (p, 0, w);
videotestsrc_convert_tmpline (p, frame, i);
}
}
void
gst_video_test_src_black (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
gst_video_test_src_unicolor (v, frame, COLOR_BLACK);
}
void
gst_video_test_src_white (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
gst_video_test_src_unicolor (v, frame, COLOR_WHITE);
}
void
gst_video_test_src_red (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
gst_video_test_src_unicolor (v, frame, COLOR_RED);
}
void
gst_video_test_src_green (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
gst_video_test_src_unicolor (v, frame, COLOR_GREEN);
}
void
gst_video_test_src_blue (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
gst_video_test_src_unicolor (v, frame, COLOR_BLUE);
}
void
gst_video_test_src_blink (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int i;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
int w = frame->info.width, h = frame->info.height;
videotestsrc_setup_paintinfo (v, p, w, h);
if (v->n_frames & 1) {
p->color = &p->foreground_color;
} else {
p->color = &p->background_color;
}
for (i = 0; i < h; i++) {
p->paint_tmpline (p, 0, w);
videotestsrc_convert_tmpline (p, frame, i);
}
}
void
gst_video_test_src_solid (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int i;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
int w = frame->info.width, h = frame->info.height;
videotestsrc_setup_paintinfo (v, p, w, h);
p->color = &p->foreground_color;
for (i = 0; i < h; i++) {
p->paint_tmpline (p, 0, w);
videotestsrc_convert_tmpline (p, frame, i);
}
}
void
gst_video_test_src_checkers1 (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int x, y;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
int w = frame->info.width, h = frame->info.height;
videotestsrc_setup_paintinfo (v, p, w, h);
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
if ((x ^ y) & 1) {
p->color = p->colors + COLOR_GREEN;
} else {
p->color = p->colors + COLOR_RED;
}
p->paint_tmpline (p, x, 1);
}
videotestsrc_convert_tmpline (p, frame, y);
}
}
void
gst_video_test_src_checkers2 (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int x, y;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
int w = frame->info.width, h = frame->info.height;
videotestsrc_setup_paintinfo (v, p, w, h);
for (y = 0; y < h; y++) {
for (x = 0; x < w; x += 2) {
guint len = MIN (2, w - x);
if ((x ^ y) & 2) {
p->color = p->colors + COLOR_GREEN;
} else {
p->color = p->colors + COLOR_RED;
}
p->paint_tmpline (p, x, len);
}
videotestsrc_convert_tmpline (p, frame, y);
}
}
void
gst_video_test_src_checkers4 (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int x, y;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
int w = frame->info.width, h = frame->info.height;
videotestsrc_setup_paintinfo (v, p, w, h);
for (y = 0; y < h; y++) {
for (x = 0; x < w; x += 4) {
guint len = MIN (4, w - x);
if ((x ^ y) & 4) {
p->color = p->colors + COLOR_GREEN;
} else {
p->color = p->colors + COLOR_RED;
}
p->paint_tmpline (p, x, len);
}
videotestsrc_convert_tmpline (p, frame, y);
}
}
void
gst_video_test_src_checkers8 (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int x, y;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
int w = frame->info.width, h = frame->info.height;
videotestsrc_setup_paintinfo (v, p, w, h);
for (y = 0; y < h; y++) {
for (x = 0; x < w; x += 8) {
guint len = MIN (8, w - x);
if ((x ^ y) & 8) {
p->color = p->colors + COLOR_GREEN;
} else {
p->color = p->colors + COLOR_RED;
}
p->paint_tmpline (p, x, len);
}
videotestsrc_convert_tmpline (p, frame, y);
}
}
static const guint8 sine_table[256] = {
128, 131, 134, 137, 140, 143, 146, 149,
152, 156, 159, 162, 165, 168, 171, 174,
176, 179, 182, 185, 188, 191, 193, 196,
199, 201, 204, 206, 209, 211, 213, 216,
218, 220, 222, 224, 226, 228, 230, 232,
234, 236, 237, 239, 240, 242, 243, 245,
246, 247, 248, 249, 250, 251, 252, 252,
253, 254, 254, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 254, 254,
253, 252, 252, 251, 250, 249, 248, 247,
246, 245, 243, 242, 240, 239, 237, 236,
234, 232, 230, 228, 226, 224, 222, 220,
218, 216, 213, 211, 209, 206, 204, 201,
199, 196, 193, 191, 188, 185, 182, 179,
176, 174, 171, 168, 165, 162, 159, 156,
152, 149, 146, 143, 140, 137, 134, 131,
128, 124, 121, 118, 115, 112, 109, 106,
103, 99, 96, 93, 90, 87, 84, 81,
79, 76, 73, 70, 67, 64, 62, 59,
56, 54, 51, 49, 46, 44, 42, 39,
37, 35, 33, 31, 29, 27, 25, 23,
21, 19, 18, 16, 15, 13, 12, 10,
9, 8, 7, 6, 5, 4, 3, 3,
2, 1, 1, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 1, 1,
2, 3, 3, 4, 5, 6, 7, 8,
9, 10, 12, 13, 15, 16, 18, 19,
21, 23, 25, 27, 29, 31, 33, 35,
37, 39, 42, 44, 46, 49, 51, 54,
56, 59, 62, 64, 67, 70, 73, 76,
79, 81, 84, 87, 90, 93, 96, 99,
103, 106, 109, 112, 115, 118, 121, 124
};
void
gst_video_test_src_zoneplate (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int i;
int j;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
struct vts_color_struct color;
int t = v->n_frames;
int w = frame->info.width, h = frame->info.height;
int xreset = -(w / 2) - v->xoffset; /* starting values for x^2 and y^2, centering the ellipse */
int yreset = -(h / 2) - v->yoffset;
int x, y;
int accum_kx;
int accum_kxt;
int accum_ky;
int accum_kyt;
int accum_kxy;
int kt;
int kt2;
int ky2;
int delta_kxt = v->kxt * t;
int delta_kxy;
int scale_kxy = 0xffff / (w / 2);
int scale_kx2 = 0xffff / w;
videotestsrc_setup_paintinfo (v, p, w, h);
color = p->colors[COLOR_BLACK];
p->color = &color;
/* Zoneplate equation:
*
* phase = k0 + kx*x + ky*y + kt*t
* + kxt*x*t + kyt*y*t + kxy*x*y
* + kx2*x*x + ky2*y*y + Kt2*t*t
*/
#if 0
for (j = 0, y = yreset; j < h; j++, y++) {
for (i = 0, x = xreset; i < w; i++, x++) {
/* zero order */
int phase = v->k0;
/* first order */
phase = phase + (v->kx * i) + (v->ky * j) + (v->kt * t);
/* cross term */
/* phase = phase + (v->kxt * i * t) + (v->kyt * j * t); */
/* phase = phase + (v->kxy * x * y) / (w/2); */
/*second order */
/*normalise x/y terms to rate of change of phase at the picture edge */
phase =
phase + ((v->kx2 * x * x) / w) + ((v->ky2 * y * y) / h) +
((v->kt2 * t * t) >> 1);
color.Y = sine_table[phase & 0xff];
color.R = color.Y;
color.G = color.Y;
color.B = color.Y;
p->paint_tmpline (p, i, 1);
}
}
#endif
/* optimised version, with original code shown in comments */
accum_ky = 0;
accum_kyt = 0;
kt = v->kt * t;
kt2 = v->kt2 * t * t;
for (j = 0, y = yreset; j < h; j++, y++) {
accum_kx = 0;
accum_kxt = 0;
accum_ky += v->ky;
accum_kyt += v->kyt * t;
delta_kxy = v->kxy * y * scale_kxy;
accum_kxy = delta_kxy * xreset;
ky2 = (v->ky2 * y * y) / h;
for (i = 0, x = xreset; i < w; i++, x++) {
/* zero order */
int phase = v->k0;
/* first order */
accum_kx += v->kx;
/* phase = phase + (v->kx * i) + (v->ky * j) + (v->kt * t); */
phase = phase + accum_kx + accum_ky + kt;
/* cross term */
accum_kxt += delta_kxt;
accum_kxy += delta_kxy;
/* phase = phase + (v->kxt * i * t) + (v->kyt * j * t); */
phase = phase + accum_kxt + accum_kyt;
/* phase = phase + (v->kxy * x * y) / (w/2); */
/* phase = phase + accum_kxy / (w/2); */
phase = phase + (accum_kxy >> 16);
/*second order */
/*normalise x/y terms to rate of change of phase at the picture edge */
/*phase = phase + ((v->kx2 * x * x)/w) + ((v->ky2 * y * y)/h) + ((v->kt2 * t * t)>>1); */
phase = phase + ((v->kx2 * x * x * scale_kx2) >> 16) + ky2 + (kt2 >> 1);
p->tmpline_u8[i] = sine_table[phase & 0xff];
}
videotestsrc_blend_line (v, p->tmpline, p->tmpline_u8,
&p->foreground_color, &p->background_color, w);
videotestsrc_convert_tmpline (p, frame, j);
}
}
void
gst_video_test_src_chromazoneplate (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int i;
int j;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
struct vts_color_struct color;
int t = v->n_frames;
int w = frame->info.width, h = frame->info.height;
int xreset = -(w / 2) - v->xoffset; /* starting values for x^2 and y^2, centering the ellipse */
int yreset = -(h / 2) - v->yoffset;
int x, y;
int accum_kx;
int accum_kxt;
int accum_ky;
int accum_kyt;
int accum_kxy;
int kt;
int kt2;
int ky2;
int delta_kxt = v->kxt * t;
int delta_kxy;
int scale_kxy = 0xffff / (w / 2);
int scale_kx2 = 0xffff / w;
videotestsrc_setup_paintinfo (v, p, w, h);
color = p->colors[COLOR_BLACK];
p->color = &color;
/* Zoneplate equation:
*
* phase = k0 + kx*x + ky*y + kt*t
* + kxt*x*t + kyt*y*t + kxy*x*y
* + kx2*x*x + ky2*y*y + Kt2*t*t
*/
/* optimised version, with original code shown in comments */
accum_ky = 0;
accum_kyt = 0;
kt = v->kt * t;
kt2 = v->kt2 * t * t;
for (j = 0, y = yreset; j < h; j++, y++) {
accum_kx = 0;
accum_kxt = 0;
accum_ky += v->ky;
accum_kyt += v->kyt * t;
delta_kxy = v->kxy * y * scale_kxy;
accum_kxy = delta_kxy * xreset;
ky2 = (v->ky2 * y * y) / h;
for (i = 0, x = xreset; i < w; i++, x++) {
/* zero order */
int phase = v->k0;
/* first order */
accum_kx += v->kx;
/* phase = phase + (v->kx * i) + (v->ky * j) + (v->kt * t); */
phase = phase + accum_kx + accum_ky + kt;
/* cross term */
accum_kxt += delta_kxt;
accum_kxy += delta_kxy;
/* phase = phase + (v->kxt * i * t) + (v->kyt * j * t); */
phase = phase + accum_kxt + accum_kyt;
/* phase = phase + (v->kxy * x * y) / (w/2); */
/* phase = phase + accum_kxy / (w/2); */
phase = phase + (accum_kxy >> 16);
/*second order */
/*normalise x/y terms to rate of change of phase at the picture edge */
/*phase = phase + ((v->kx2 * x * x)/w) + ((v->ky2 * y * y)/h) + ((v->kt2 * t * t)>>1); */
phase = phase + ((v->kx2 * x * x * scale_kx2) >> 16) + ky2 + (kt2 >> 1);
color.Y = 128;
color.U = sine_table[phase & 0xff];
color.V = sine_table[phase & 0xff];
color.R = 128;
color.G = 128;
color.B = color.V;
color.gray = color.Y << 8;
p->paint_tmpline (p, i, 1);
}
videotestsrc_convert_tmpline (p, frame, j);
}
}
#undef SCALE_AMPLITUDE
void
gst_video_test_src_circular (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int i;
int j;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
double freq[8];
int w = frame->info.width, h = frame->info.height;
int d;
videotestsrc_setup_paintinfo (v, p, w, h);
for (i = 1; i < 8; i++) {
freq[i] = 200 * pow (2.0, -(i - 1) / 4.0);
}
for (j = 0; j < h; j++) {
for (i = 0; i < w; i++) {
double dist;
int seg;
dist =
sqrt ((2 * i - w) * (2 * i - w) + (2 * j - h) * (2 * j -
h)) / (2 * w);
seg = floor (dist * 16);
if (seg == 0 || seg >= 8) {
p->tmpline_u8[i] = 0;
} else {
d = floor (256 * dist * freq[seg] + 0.5);
p->tmpline_u8[i] = sine_table[d & 0xff];
}
}
videotestsrc_blend_line (v, p->tmpline, p->tmpline_u8,
&p->foreground_color, &p->background_color, w);
videotestsrc_convert_tmpline (p, frame, j);
}
}
void
gst_video_test_src_gamut (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int x, y;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
struct vts_color_struct yuv_primary;
struct vts_color_struct yuv_secondary;
int w = frame->info.width, h = frame->info.height;
videotestsrc_setup_paintinfo (v, p, w, h);
for (y = 0; y < h; y++) {
int region = (y * 4) / h;
switch (region) {
case 0: /* black */
yuv_primary = p->colors[COLOR_BLACK];
yuv_secondary = p->colors[COLOR_BLACK];
yuv_secondary.Y = 0;
break;
case 1:
yuv_primary = p->colors[COLOR_WHITE];
yuv_secondary = p->colors[COLOR_WHITE];
yuv_secondary.Y = 255;
break;
case 2:
yuv_primary = p->colors[COLOR_RED];
yuv_secondary = p->colors[COLOR_RED];
yuv_secondary.V = 255;
break;
case 3:
yuv_primary = p->colors[COLOR_BLUE];
yuv_secondary = p->colors[COLOR_BLUE];
yuv_secondary.U = 255;
break;
}
for (x = 0; x < w; x += 8) {
int len = MIN (8, w - x);
if ((x ^ y) & (1 << 4)) {
p->color = &yuv_primary;
} else {
p->color = &yuv_secondary;
}
p->paint_tmpline (p, x, len);
}
videotestsrc_convert_tmpline (p, frame, y);
}
}
void
gst_video_test_src_ball (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int i;
int radius = 20;
int w = frame->info.width, h = frame->info.height;
gint64 wall_time;
gdouble rad = 0;
double x, y;
int flipit = 0;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
struct vts_color_struct
*foreground_color = &p->foreground_color,
*background_color = &p->background_color;
switch (v->animation_mode) {
case GST_VIDEO_TEST_SRC_FRAMES:
rad = (gdouble) (v->n_frames) / 200;
flipit = (v->n_frames / 50) % 2;
break;
case GST_VIDEO_TEST_SRC_WALL_TIME:
wall_time = g_get_real_time ();
rad = (gdouble) wall_time / 1000000.0;
flipit = (wall_time / 1000000) % 2;
break;
case GST_VIDEO_TEST_SRC_RUNNING_TIME:
rad = (gdouble) (pts) / GST_SECOND;
flipit = (pts / GST_SECOND) % 2;
break;
}
if (v->motion_type == GST_VIDEO_TEST_SRC_HSWEEP) {
/* Periodic reset for half sweep */
rad /= 2;
rad -= floor (2 * rad) / 2;
}
/* Scale for the animation calcs */
rad = 2 * G_PI * rad;
if (v->motion_type == GST_VIDEO_TEST_SRC_WAVY) {
x = radius + (0.5 + 0.5 * sin (rad)) * (w - 2 * radius);
y = radius + (0.5 + 0.5 * sin (rad * sqrt (2))) * (h - 2 * radius);
} else {
/* sweep and hsweep */
/* x,y is center of circle,
* radius is radius
* rad = angle .. of sweep.
*/
radius = MIN (h, w) / 4 - 0;
/* 0 is the margin between edge of screen and top of ball */
x = w / 2 + sin (rad) * radius;
y = h / 2 - cos (rad) * radius;
}
if (v->flip && flipit) {
foreground_color = &p->background_color;
background_color = &p->foreground_color;
}
/* draw ball on frame */
videotestsrc_setup_paintinfo (v, p, w, h);
for (i = 0; i < h; i++) {
if (i < y - radius || i > y + radius) {
memset (p->tmpline_u8, 0, w);
} else {
double o = MAX (0, (radius * radius - (i - y) * (i - y)));
int r = rint (sqrt (o));
int x1, x2;
int j;
x1 = 0;
x2 = MAX (0, x - r);
for (j = x1; j < x2; j++) {
p->tmpline_u8[j] = 0;
}
x1 = MAX (0, x - r);
x2 = MIN (w, x + r + 1);
for (j = x1; j < x2; j++) {
double rr = radius - sqrt ((j - x) * (j - x) + (i - y) * (i - y));
rr *= 0.5;
p->tmpline_u8[j] = CLAMP ((int) floor (256 * rr), 0, 255);
}
x1 = MIN (w, x + r + 1);
x2 = w;
for (j = x1; j < x2; j++) {
p->tmpline_u8[j] = 0;
}
}
if ((v->motion_type == GST_VIDEO_TEST_SRC_SWEEP) ||
(v->motion_type == GST_VIDEO_TEST_SRC_HSWEEP)) {
/* dot in the middle (to draw a line down the center) */
p->tmpline_u8[w / 2] = 255;
p->tmpline_u8[(int) x] = 255;
}
videotestsrc_blend_line (v, p->tmpline, p->tmpline_u8,
foreground_color, background_color, w);
videotestsrc_convert_tmpline (p, frame, i);
}
if ((v->motion_type == GST_VIDEO_TEST_SRC_SWEEP) ||
(v->motion_type == GST_VIDEO_TEST_SRC_HSWEEP)) {
/* draw a line across the middle of frame and ball. */
for (i = 0; i < w; i++) {
p->tmpline_u8[i] = 255;
}
videotestsrc_blend_line (v, p->tmpline, p->tmpline_u8,
foreground_color, background_color, w);
videotestsrc_convert_tmpline (p, frame, h / 2);
videotestsrc_convert_tmpline (p, frame, y);
}
}
static void
paint_tmpline_ARGB (paintinfo * p, int x, int w)
{
int offset;
guint32 value;
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
value = (p->color->A << 0) | (p->color->R << 8) |
(p->color->G << 16) | ((guint32) p->color->B << 24);
#else
value = ((guint32) p->color->A << 24) | (p->color->R << 16) |
(p->color->G << 8) | (p->color->B << 0);
#endif
offset = (x * 4);
video_test_src_orc_splat_u32 (p->tmpline + offset, value, w);
}
static void
paint_tmpline_AYUV (paintinfo * p, int x, int w)
{
int offset;
guint32 value;
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
value = (p->color->A << 0) | (p->color->Y << 8) |
(p->color->U << 16) | ((guint32) p->color->V << 24);
#else
value = ((guint32) p->color->A << 24) | (p->color->Y << 16) |
(p->color->U << 8) | (p->color->V << 0);
#endif
offset = (x * 4);
video_test_src_orc_splat_u32 (p->tmpline + offset, value, w);
}
static void
convert_hline_generic (paintinfo * p, GstVideoFrame * frame, int y)
{
const GstVideoFormatInfo *finfo, *uinfo;
gint line, offset, i, width, height, bits;
guint n_lines;
gpointer dest;
finfo = frame->info.finfo;
uinfo = gst_video_format_get_info (finfo->unpack_format);
width = GST_VIDEO_FRAME_WIDTH (frame);
height = GST_VIDEO_FRAME_HEIGHT (frame);
bits = GST_VIDEO_FORMAT_INFO_DEPTH (uinfo, 0);
n_lines = p->n_lines;
offset = p->offset;
line = y % n_lines;
dest = p->lines[line];
if (bits == 16) {
/* 16 bits */
for (i = 0; i < width; i++) {
p->tmpline_u16[i * 4 + 0] = TO_16 (p->tmpline[i * 4 + 0]);
p->tmpline_u16[i * 4 + 1] = TO_16 (p->tmpline[i * 4 + 1]);
p->tmpline_u16[i * 4 + 2] = TO_16 (p->tmpline[i * 4 + 2]);
p->tmpline_u16[i * 4 + 3] = TO_16 (p->tmpline[i * 4 + 3]);
}
memcpy (dest, p->tmpline_u16, width * 8);
} else {
memcpy (dest, p->tmpline, width * 4);
}
if (line - offset == n_lines - 1) {
gpointer lines[8];
guint idx;
y -= n_lines - 1;
for (i = 0; i < n_lines; i++) {
idx = CLAMP (y + i + offset, 0, height - 1);
lines[i] = p->lines[idx % n_lines];
}
if (p->subsample)
gst_video_chroma_resample (p->subsample, lines, width);
for (i = 0; i < n_lines; i++) {
idx = y + i + offset;
if (idx > height - 1)
break;
finfo->pack_func (finfo, GST_VIDEO_PACK_FLAG_NONE,
lines[i], 0, frame->data, frame->info.stride,
frame->info.chroma_site, idx, width);
}
}
}
static void
convert_hline_bayer (paintinfo * p, GstVideoFrame * frame, int y)
{
int i;
guint8 *data = GST_VIDEO_FRAME_PLANE_DATA (frame, 0);
guint8 *R = data + y * GST_VIDEO_FRAME_PLANE_STRIDE (frame, 0);
guint8 *argb = p->tmpline;
gint width = GST_VIDEO_FRAME_WIDTH (frame);
int x_inv = p->x_invert;
int y_inv = p->y_invert;
if ((y ^ y_inv) & 1) {
for (i = 0; i < width; i++) {
if ((i ^ x_inv) & 1) {
R[i] = argb[4 * i + 1];
} else {
R[i] = argb[4 * i + 2];
}
}
} else {
for (i = 0; i < width; i++) {
if ((i ^ x_inv) & 1) {
R[i] = argb[4 * i + 2];
} else {
R[i] = argb[4 * i + 3];
}
}
}
}
void
gst_video_test_src_pinwheel (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int i;
int j;
int k;
int t = v->n_frames;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
struct vts_color_struct color;
int w = frame->info.width, h = frame->info.height;
double c[20];
double s[20];
videotestsrc_setup_paintinfo (v, p, w, h);
color = p->colors[COLOR_BLACK];
p->color = &color;
for (k = 0; k < 19; k++) {
double theta = M_PI / 19 * k + 0.001 * v->kt * t;
c[k] = cos (theta);
s[k] = sin (theta);
}
for (j = 0; j < h; j++) {
for (i = 0; i < w; i++) {
double v;
v = 0;
for (k = 0; k < 19; k++) {
double x, y;
x = c[k] * (i - 0.5 * w) + s[k] * (j - 0.5 * h);
x *= 1.0;
y = CLAMP (x, -1, 1);
if (k & 1)
y = -y;
v += y;
}
p->tmpline_u8[i] = CLAMP (rint (v * 128 + 128), 0, 255);
}
videotestsrc_blend_line (v, p->tmpline, p->tmpline_u8,
&p->foreground_color, &p->background_color, w);
videotestsrc_convert_tmpline (p, frame, j);
}
}
void
gst_video_test_src_spokes (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int i;
int j;
int k;
int t = v->n_frames;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
struct vts_color_struct color;
int w = frame->info.width, h = frame->info.height;
double c[20];
double s[20];
videotestsrc_setup_paintinfo (v, p, w, h);
color = p->colors[COLOR_BLACK];
p->color = &color;
for (k = 0; k < 19; k++) {
double theta = M_PI / 19 * k + 0.001 * v->kt * t;
c[k] = cos (theta);
s[k] = sin (theta);
}
for (j = 0; j < h; j++) {
for (i = 0; i < w; i++) {
double v;
v = 0;
for (k = 0; k < 19; k++) {
double x, y;
double sharpness = 1.0;
double linewidth = 2.0;
x = c[k] * (i - 0.5 * w) + s[k] * (j - 0.5 * h);
x = linewidth * 0.5 - fabs (x);
x *= sharpness;
y = CLAMP (x + 0.5, 0.0, 1.0);
v += y;
}
p->tmpline_u8[i] = CLAMP (rint (v * 255), 0, 255);
}
videotestsrc_blend_line (v, p->tmpline, p->tmpline_u8,
&p->foreground_color, &p->background_color, w);
videotestsrc_convert_tmpline (p, frame, j);
}
}
void
gst_video_test_src_gradient (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int i;
int j;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
struct vts_color_struct color;
int w = frame->info.width, h = frame->info.height;
videotestsrc_setup_paintinfo (v, p, w, h);
color = p->colors[COLOR_BLACK];
p->color = &color;
for (j = 0; j < h; j++) {
int y = j * 255.0 / h;
for (i = 0; i < w; i++) {
p->tmpline_u8[i] = y;
}
videotestsrc_blend_line (v, p->tmpline, p->tmpline_u8,
&p->foreground_color, &p->background_color, w);
videotestsrc_convert_tmpline (p, frame, j);
}
}
void
gst_video_test_src_colors (GstVideoTestSrc * v, GstClockTime pts,
GstVideoFrame * frame)
{
int i;
int j;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
struct vts_color_struct color;
int w = frame->info.width, h = frame->info.height;
videotestsrc_setup_paintinfo (v, p, w, h);
color = p->colors[COLOR_BLACK];
p->color = &color;
for (j = 0; j < h; j++) {
for (i = 0; i < w; i++) {
p->tmpline[i * 4 + 0] = 0xff;
p->tmpline[i * 4 + 1] = ((i * 4096) / w) % 256;
p->tmpline[i * 4 + 2] = (((j * 16) / h) << 4) | ((i * 16) / w);
p->tmpline[i * 4 + 3] = ((j * 4096) / h) % 256;
}
videotestsrc_convert_tmpline (p, frame, j);
}
}
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