2010-06-18 19:29:49 +00:00
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/******************************************************************************
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* *
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* easycap_testcard.c *
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* *
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******************************************************************************/
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/*
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*
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* Copyright (C) 2010 R.M. Thomas <rmthomas@sciolus.org>
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*
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* The software 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/*****************************************************************************/
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#include "easycap.h"
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/*****************************************************************************/
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2010-11-07 20:03:50 +00:00
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#define TESTCARD_BYTESPERLINE (2 * 720)
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2010-06-18 19:29:49 +00:00
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void
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2010-11-07 20:03:50 +00:00
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easycap_testcard(struct easycap *peasycap, int field)
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2010-06-18 19:29:49 +00:00
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{
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2011-02-28 17:27:09 +00:00
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int total;
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int y, u, v, r, g, b;
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unsigned char uyvy[4];
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int i1, line, k, m, n, more, much, barwidth, barheight;
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unsigned char bfbar[TESTCARD_BYTESPERLINE / 8], *p1, *p2;
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struct data_buffer *pfield_buffer;
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2010-06-18 19:29:49 +00:00
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2011-02-28 17:27:09 +00:00
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if (NULL == peasycap) {
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SAY("ERROR: peasycap is NULL\n");
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return;
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}
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JOM(8, "%i=field\n", field);
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switch (peasycap->width) {
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case 720:
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case 360: {
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barwidth = (2 * 720) / 8;
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break;
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}
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case 704:
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case 352: {
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barwidth = (2 * 704) / 8;
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break;
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}
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case 640:
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case 320: {
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barwidth = (2 * 640) / 8;
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break;
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}
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default: {
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SAM("ERROR: cannot set barwidth\n");
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return;
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}
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}
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if (TESTCARD_BYTESPERLINE < barwidth) {
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SAM("ERROR: barwidth is too large\n");
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return;
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}
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switch (peasycap->height) {
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case 576:
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case 288: {
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barheight = 576;
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break;
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}
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case 480:
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case 240: {
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barheight = 480;
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break;
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}
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default: {
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SAM("ERROR: cannot set barheight\n");
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return;
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}
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}
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total = 0;
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k = field;
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m = 0;
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n = 0;
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2010-06-18 19:29:49 +00:00
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2011-02-28 17:27:09 +00:00
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for (line = 0; line < (barheight / 2); line++) {
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for (i1 = 0; i1 < 8; i1++) {
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r = (i1 * 256)/8;
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g = (i1 * 256)/8;
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b = (i1 * 256)/8;
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2010-06-18 19:29:49 +00:00
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2011-02-28 17:27:09 +00:00
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y = 299*r/1000 + 587*g/1000 + 114*b/1000 ;
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u = -147*r/1000 - 289*g/1000 + 436*b/1000 ;
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u = u + 128;
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v = 615*r/1000 - 515*g/1000 - 100*b/1000 ;
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v = v + 128;
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2010-06-18 19:29:49 +00:00
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2011-02-28 17:27:09 +00:00
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uyvy[0] = 0xFF & u ;
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uyvy[1] = 0xFF & y ;
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uyvy[2] = 0xFF & v ;
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uyvy[3] = 0xFF & y ;
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2010-06-18 19:29:49 +00:00
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2011-02-28 17:27:09 +00:00
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p1 = &bfbar[0];
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while (p1 < &bfbar[barwidth]) {
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*p1++ = uyvy[0] ;
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*p1++ = uyvy[1] ;
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*p1++ = uyvy[2] ;
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*p1++ = uyvy[3] ;
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total += 4;
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2010-06-18 19:29:49 +00:00
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}
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2011-02-28 17:27:09 +00:00
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p1 = &bfbar[0];
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more = barwidth;
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2010-06-18 19:29:49 +00:00
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2011-02-28 17:27:09 +00:00
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while (more) {
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if ((FIELD_BUFFER_SIZE/PAGE_SIZE) <= m) {
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SAM("ERROR: bad m reached\n");
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return;
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}
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if (PAGE_SIZE < n) {
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SAM("ERROR: bad n reached\n");
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return;
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}
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2010-06-18 19:29:49 +00:00
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2011-02-28 17:27:09 +00:00
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if (0 > more) {
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SAM("ERROR: internal fault\n");
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return;
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}
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2010-06-18 19:29:49 +00:00
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2011-02-28 17:27:09 +00:00
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much = PAGE_SIZE - n;
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if (much > more)
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much = more;
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pfield_buffer = &peasycap->field_buffer[k][m];
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p2 = pfield_buffer->pgo + n;
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memcpy(p2, p1, much);
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2010-06-18 19:29:49 +00:00
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2011-02-28 17:27:09 +00:00
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p1 += much;
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n += much;
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more -= much;
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if (PAGE_SIZE == n) {
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m++;
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n = 0;
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}
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2010-06-18 19:29:49 +00:00
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}
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}
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}
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2011-02-28 17:27:09 +00:00
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return;
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2010-06-18 19:29:49 +00:00
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}
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