1
0
mirror of https://github.com/qTox/qTox.git synced 2024-03-22 14:00:36 +08:00
qTox/widget/netcamview.cpp
2014-08-29 14:33:19 +02:00

112 lines
2.8 KiB
C++

/*
Copyright (C) 2014 by Project Tox <https://tox.im>
This file is part of qTox, a Qt-based graphical interface for Tox.
This program is libre 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 3 of the License, or
(at your option) any later version.
This program 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 COPYING file for more details.
*/
#include "netcamview.h"
#include "core.h"
#include "widget.h"
#include <QApplication>
#include <QtConcurrent/QtConcurrent>
static inline void fromYCbCrToRGB(
uint8_t Y, uint8_t Cb, uint8_t Cr,
uint8_t& R, uint8_t& G, uint8_t& B)
{
int r = Y + ((1436 * (Cr - 128)) >> 10),
g = Y - ((354 * (Cb - 128) + 732 * (Cr - 128)) >> 10),
b = Y + ((1814 * (Cb - 128)) >> 10);
if(r < 0) {
r = 0;
} else if(r > 255) {
r = 255;
}
if(g < 0) {
g = 0;
} else if(g > 255) {
g = 255;
}
if(b < 0) {
b = 0;
} else if(b > 255) {
b = 255;
}
R = static_cast<uint8_t>(r);
G = static_cast<uint8_t>(g);
B = static_cast<uint8_t>(b);
}
NetCamView::NetCamView(QWidget* parent)
: QWidget(parent), displayLabel{new QLabel},
mainLayout{new QHBoxLayout()}
{
setLayout(mainLayout);
setWindowTitle("Tox video");
setMinimumSize(320,240);
displayLabel->setScaledContents(true);
mainLayout->addWidget(displayLabel);
}
void NetCamView::updateDisplay(vpx_image* frame)
{
if (!frame->w || !frame->h)
return;
Core* core = Widget::getInstance()->getCore();
core->increaseVideoBusyness();
QImage img = convert(*frame);
vpx_img_free(frame);
displayLabel->setPixmap(QPixmap::fromImage(img));
core->decreaseVideoBusyness();
}
QImage NetCamView::convert(vpx_image& frame)
{
int w = frame.d_w, h = frame.d_h;
int bpl = frame.stride[VPX_PLANE_Y], cxbpl = frame.stride[VPX_PLANE_V];
QImage img(w, h, QImage::Format_RGB32);
uint8_t* yData = frame.planes[VPX_PLANE_Y];
uint8_t* uData = frame.planes[VPX_PLANE_V];
uint8_t* vData = frame.planes[VPX_PLANE_U];
for (int i = 0; i< h; i++)
{
uint32_t* scanline = (uint32_t*)img.scanLine(i);
for (int j=0; j < w; j++)
{
uint8_t Y = yData[i*bpl + j];
uint8_t U = uData[i/2*cxbpl + j/2];
uint8_t V = vData[i/2*cxbpl + j/2];
uint8_t R, G, B;
fromYCbCrToRGB(Y, U, V, R, G, B);
scanline[j] = (0xFF<<24) + (R<<16) + (G<<8) + B;
}
}
return img;
}