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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* yuv_draw.cc
*
* Thu Sep 22 12:35:28 CEST 2005
* Copyright 2005 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of MIaV.
*
* MIaV is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MIaV 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MIaV; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "config.h"
#include "yuv_draw.h"
// for miav_app
#include "miav.h"
//#include "font.h"
#include <string.h>
#define TEXT_MARGIN 10
YUVDraw::YUVDraw()
{
overlay = NULL;
// One line of text!
top_pixmap = new QPixmap(720 - TEXT_MARGIN, 20);
bottom_pixmap = new QPixmap(720 - TEXT_MARGIN, 20);
for(int x = 0; x < 720 - TEXT_MARGIN; x++) {
for(int y = 0; y < 20; y++) {
top_grey[x][y] = 255;
}
}
for(int x = 0; x < 720 - TEXT_MARGIN; x++) {
for(int y = 0; y < 20; y++) {
bottom_grey[x][y] = 255;
}
}
}
YUVDraw::~YUVDraw()
{
delete top_pixmap;
delete bottom_pixmap;
}
void YUVDraw::setOverlay(SDL_Overlay* o)
{
overlay = o;
}
void YUVDraw::addPixel(int x, int y, int val)
{
if(overlay->w < x) return; // Out of range
if(overlay->h < y) return; // Out of range
Uint8 **pixels = overlay->pixels;
Uint16 *pitches = overlay->pitches;
Uint8* pixel = &pixels[0][(2 * x) + (y * pitches[0])];
if(val > 0) *pixel = (255<*pixel+val?255:*pixel+val);
else *pixel = (0>*pixel+val?0:*pixel+val);
}
void YUVDraw::setTopText(char* text)
{
miav_app->lock();
top_pixmap->fill();
QPainter painter;
painter.begin(top_pixmap);
painter.setFont( QFont( "Arial", 12, QFont::Bold ) );
painter.setPen( Qt::black );
painter.drawText(0, 15, text);
painter.end();
QImage image = top_pixmap->convertToImage();
for(int x = 0; x < 720 - TEXT_MARGIN; x++) {
for(int y = 0; y < 20; y++) {
top_grey[x][y] = qGray(image.pixel(x, y));
}
}
miav_app->unlock();
}
void YUVDraw::setBottomText(char* text)
{
miav_app->lock();
bottom_pixmap->fill();
QPainter painter;
painter.begin(bottom_pixmap);
painter.setFont( QFont( "Arial", 12, QFont::Bold ) );
painter.setPen( Qt::black );
painter.drawText(0, 15, text);
painter.end();
QImage image = bottom_pixmap->convertToImage();
for(int x = 0; x < 720 - TEXT_MARGIN; x++) {
for(int y = 0; y < 20; y++) {
bottom_grey[x][y] = qGray(image.pixel(x, y));
}
}
miav_app->unlock();
}
void YUVDraw::draw()
{
for(int x = 0; x < 720 - TEXT_MARGIN; x++) {
for(int y = 0; y < 20; y++) {
if(top_grey[x][y] != 255) addPixel(x + TEXT_MARGIN, y + TEXT_MARGIN, 255 - top_grey[x][y]);
}
}
for(int x = 0; x < 720 - TEXT_MARGIN; x++) {
for(int y = 0; y < 20; y++) {
if(bottom_grey[x][y] != 255) addPixel(x + TEXT_MARGIN, (556 - TEXT_MARGIN)+ y, 255 - bottom_grey[x][y]);
}
}
}
/*
void YUVDraw::setText(int xoffset, int yoffset, char* text, int val)
{
for(unsigned int i = 0; i < strlen(text); i++) {
for(int x = 0; x < FONT_WIDTH; x++) {
for(int y = 0; y < FONT_HEIGHT; y++) {
unsigned char col = palette[letter[(int)text[i]][y][x]];
if(col) col += val;
addPixel(i * FONT_WIDTH + x + xoffset, y + yoffset, col);
}
}
}
}
*/
/*
typedef struct{
Uint32 format;
int w, h;
int planes;
Uint16 *pitches;
Uint8 **pixels;
Uint32 hw_overlay:1;
} SDL_Overlay;
*/
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