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Diffstat (limited to 'src/yuv_draw.cc')
| -rw-r--r-- | src/yuv_draw.cc | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/src/yuv_draw.cc b/src/yuv_draw.cc new file mode 100644 index 0000000..30427b3 --- /dev/null +++ b/src/yuv_draw.cc @@ -0,0 +1,198 @@ +/* -*- 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; +*/ |