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https://gitlab.freedesktop.org/pipewire/pipewire.git
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4b83d6cfc8
Remove the threads from the element and use timerfd to schedule timeouts Propagate live flag between node links
143 lines
3.3 KiB
C
143 lines
3.3 KiB
C
/* Spa Video Test Source
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* Copyright (C) 2016 Axis Communications AB
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#define PIXEL_SIZE 3
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#define GET_IMAGE_WIDTH(this) this->current_format.info.raw.size.width
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#define GET_IMAGE_HEIGHT(this) this->current_format.info.raw.size.height
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enum
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{
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GRAY = 0,
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YELLOW,
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CYAN,
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GREEN,
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MAGENTA,
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RED,
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BLUE,
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BLACK,
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NEG_I,
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WHITE,
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POS_Q,
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DARK_BLACK,
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LIGHT_BLACK,
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N_COLORS
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};
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struct pixel
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{
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char R;
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char G;
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char B;
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};
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static struct pixel colors[N_COLORS] =
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{
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{191, 191, 191}, /* GRAY */
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{191, 191, 0}, /* YELLOW */
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{0, 191, 191}, /* CYAN */
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{0, 191, 0}, /* GREEN */
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{191, 0, 191}, /* MAGENTA */
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{191, 0, 0}, /* RED */
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{0, 0, 191}, /* BLUE */
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{19, 19, 19}, /* BLACK */
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{0, 33, 76}, /* NEGATIVE I */
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{255, 255, 255}, /* WHITE */
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{49, 0, 107}, /* POSITIVE Q */
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{9, 9, 9}, /* DARK BLACK */
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{29, 29, 29}, /* LIGHT BLACK */
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};
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static void
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draw_line (char *data, struct pixel *c, int w)
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{
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int i;
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for (i = 0; i < w; i++) {
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data[i * PIXEL_SIZE + 0] = c->R;
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data[i * PIXEL_SIZE + 1] = c->G;
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data[i * PIXEL_SIZE + 2] = c->B;
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}
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}
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#define DRAW_LINE(data,line,offset,color,width) \
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draw_line (data + (line * w + offset) * PIXEL_SIZE, colors + color, width);
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static void
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draw_smpte_snow (SpaVideoTestSrc *this, char *data)
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{
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int h, w;
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int y1, y2;
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int i, j;
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w = GET_IMAGE_WIDTH (this);
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h = GET_IMAGE_HEIGHT (this);
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y1 = 2 * h / 3;
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y2 = 3 * h / 4;
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for (i = 0; i < y1; i++) {
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for (j = 0; j < 7; j++) {
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int x1 = j * w / 7;
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int x2 = (j + 1) * w / 7;
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DRAW_LINE (data, i, x1, j, x2 - x1);
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}
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}
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for (i = y1; i < y2; i++) {
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for (j = 0; j < 7; j++) {
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int x1 = j * w / 7;
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int x2 = (j + 1) * w / 7;
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int c = (j & 1) ? BLACK : BLUE - j;
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DRAW_LINE (data, i, x1, c, x2 - x1);
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}
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}
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for (i = y2; i < h; i++) {
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int x = 0;
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/* negative I */
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DRAW_LINE (data, i, x, NEG_I, w / 6);
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x += w / 6;
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/* white */
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DRAW_LINE (data, i, x, WHITE, w / 6);
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x += w / 6;
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/* positive Q */
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DRAW_LINE (data, i, x, POS_Q, w / 6);
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x += w / 6;
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/* pluge */
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DRAW_LINE (data, i, x, DARK_BLACK, w / 12);
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x += w / 12;
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DRAW_LINE (data, i, x, BLACK, w / 12);
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x += w / 12;
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DRAW_LINE (data, i, x, LIGHT_BLACK, w / 12);
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x += w / 12;
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/* war of the ants (a.k.a. snow) */
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for (j = x; j < w; j++) {
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unsigned char r = rand ();
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data[(i * w + j) * PIXEL_SIZE + 0] = r;
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data[(i * w + j) * PIXEL_SIZE + 1] = r;
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data[(i * w + j) * PIXEL_SIZE + 2] = r;
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}
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}
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}
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