diff options
Diffstat (limited to 'kopete/libkopete/avdevice/qvideostream.cpp')
-rw-r--r-- | kopete/libkopete/avdevice/qvideostream.cpp | 731 |
1 files changed, 731 insertions, 0 deletions
diff --git a/kopete/libkopete/avdevice/qvideostream.cpp b/kopete/libkopete/avdevice/qvideostream.cpp new file mode 100644 index 00000000..cd7aafc2 --- /dev/null +++ b/kopete/libkopete/avdevice/qvideostream.cpp @@ -0,0 +1,731 @@ +/* + * + * Copyright (C) 2002 George Staikos <[email protected]> + * 2004 Dirk Ziegelmeier <[email protected]> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this library; see the file COPYING.LIB. If not, write to + * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#include "qvideostream.h" +#include <qevent.h> +#include <qimage.h> +#include <qtimer.h> + +#include <kdebug.h> +#include "kxv.h" + +#include <sys/types.h> +#include <X11/Xutil.h> + +#ifdef HAVE_XSHM +extern "C" { +#include <sys/shm.h> +#include <X11/X.h> +#include <X11/Xlib.h> +#include <X11/extensions/XShm.h> +} +#endif + +#ifdef HAVE_GL +class QVideoStreamGLWidget : public QGLWidget +{ +public: + QVideoStreamGLWidget(QWidget* parent = 0, const char* name = 0); + virtual ~QVideoStreamGLWidget(); + + void setInputSize(const QSize& sz); + void display(const unsigned char *const img, int x, int y, int sw, int sh); + +private: + virtual void resizeGL(int w, int h); + void initializeGL(); + + virtual bool eventFilter( QObject *o, QEvent *e ); + void calc(QPoint& p, QPoint& v); + + + QSize _inputSize; + GLuint _tex; + int _tw, _th; + QWidget* _w; + int _maxGL; + QSize _sz; + bool _glfun; + QPoint _ul, _ur, _ll, _lr; + QPoint _vul, _vur, _vll, _vlr; + QTimer* _glfunTimer; +}; +#endif + +class QVideoStreamPrivate +{ +public: + QVideoStreamPrivate(); + ~QVideoStreamPrivate(); + KXv *xvHandle; + KXvDevice *xvdev; + XImage *xim; + GC gc; +#ifdef HAVE_GL + QVideoStreamGLWidget* glwidget; +#endif +#ifdef HAVE_XSHM + XShmSegmentInfo shmh; +#endif +}; + +QVideoStreamPrivate::QVideoStreamPrivate() +{ + xvHandle = 0; + xim = 0; +} + +QVideoStreamPrivate::~QVideoStreamPrivate() +{ + delete xvHandle; +} + +QVideoStream::QVideoStream(QWidget *widget, const char* name) + : QObject(widget, name), + d(new QVideoStreamPrivate), + _w(widget), + _methods(METHOD_NONE), + _method(METHOD_NONE), + _format(FORMAT_NONE), + _init(false) +{ + int dummy; + unsigned int dummy2; + findDisplayProperties(_xFormat, dummy, dummy2, dummy); + + _methods = (VideoMethod)(_methods | METHOD_X11); + +#ifdef HAVE_XSHM + if (XShmQueryExtension(_w->x11Display())) { + _methods = (VideoMethod)(_methods | METHOD_XSHM); + } +#endif + + if (KXv::haveXv()) { + _methods = (VideoMethod)(_methods | METHOD_XV); +#ifdef HAVE_XSHM + _methods = (VideoMethod)(_methods | METHOD_XVSHM); +#endif + } + +#ifdef HAVE_GL + if (QGLFormat::hasOpenGL()) { + _methods = (VideoMethod)(_methods | METHOD_GL); + } +#endif + + d->gc = XCreateGC(_w->x11Display(), _w->winId(), 0, NULL); +} + +QVideoStream::~QVideoStream() +{ + deInit(); + XFreeGC(_w->x11Display(), d->gc); + delete d; +} + +void QVideoStream::deInit() +{ + if (!_init) + return; + + _init = false; + _format = FORMAT_NONE; + + Q_ASSERT(_methods & _method); + if (!(_methods & _method)) + return; + + switch (_method) { + case METHOD_XSHM: +#ifdef HAVE_XSHM + XShmDetach(_w->x11Display(), &(d->shmh)); + XDestroyImage(d->xim); + d->xim = 0; + shmdt(d->shmh.shmaddr); +#endif + break; + case METHOD_X11: + delete[] d->xim->data; + d->xim->data = 0; + XDestroyImage(d->xim); + d->xim = 0; + break; + case METHOD_XVSHM: + case METHOD_XV: + delete d->xvHandle; + d->xvHandle = 0; + break; + case METHOD_GL: +#ifdef HAVE_GL + delete d->glwidget; +#endif + break; + default: + Q_ASSERT(0); + return; + } +} + +void QVideoStream::init() +{ + Q_ASSERT(_methods & _method); + if (!(_methods & _method)) + return; + + switch (_method) { + case METHOD_XSHM: + { +#ifdef HAVE_XSHM + if ( !_inputSize.isValid() ) { + kdWarning() << "QVideoStream::init() (XSHM): Unable to initialize due to invalid input size." << endl; + return; + } + + memset(&(d->shmh), 0, sizeof(XShmSegmentInfo)); + d->xim = XShmCreateImage(_w->x11Display(), + (Visual*)_w->x11Visual(), + _w->x11Depth(), + ZPixmap, 0, &(d->shmh), + _inputSize.width(), + _inputSize.height()); + d->shmh.shmid = shmget(IPC_PRIVATE, + d->xim->bytes_per_line*d->xim->height, + IPC_CREAT|0600); + d->shmh.shmaddr = (char *)shmat(d->shmh.shmid, 0, 0); + d->xim->data = (char*)d->shmh.shmaddr; + d->shmh.readOnly = False; + Status s = XShmAttach(_w->x11Display(), &(d->shmh)); + if (s) { + XSync(_w->x11Display(), False); + shmctl(d->shmh.shmid, IPC_RMID, 0); + _format = _xFormat; + _init = true; + } else { + kdWarning() << "XShmAttach failed!" << endl; + XDestroyImage(d->xim); + d->xim = 0; + shmdt(d->shmh.shmaddr); + } +#endif + } + break; + case METHOD_X11: + if ( !_inputSize.isValid() ) { + kdWarning() << "QVideoStream::init() (X11): Unable to initialize due to invalid input size." << endl; + return; + } + + d->xim = XCreateImage(_w->x11Display(), + (Visual*)_w->x11Visual(), + _w->x11Depth(), + ZPixmap, 0, 0, + _inputSize.width(), + _inputSize.height(), + 32, 0); + + d->xim->data = new char[d->xim->bytes_per_line*_inputSize.height()]; + _format = _xFormat; + _init = true; + break; + case METHOD_XVSHM: + case METHOD_XV: + { + if (d->xvHandle) + delete d->xvHandle; + + d->xvHandle = KXv::connect(_w->winId()); + KXvDeviceList& xvdl(d->xvHandle->devices()); + KXvDevice *xvdev = NULL; + + for (xvdev = xvdl.first(); xvdev; xvdev = xvdl.next()) { + if (xvdev->isImageBackend() && + xvdev->supportsWidget(_w)) { + d->xvdev = xvdev; + d->xvdev->useShm(_method == METHOD_XVSHM); + _format = FORMAT_YUYV; + _init = true; + break; + } + } + + if (!_init) { + delete d->xvHandle; + d->xvHandle = 0; + } + } + break; + case METHOD_GL: +#ifdef HAVE_GL + d->glwidget = new QVideoStreamGLWidget(_w, "QVideoStreamGLWidget"); + d->glwidget->resize(_w->width(), _w->height()); + d->glwidget->show(); + _format = FORMAT_BGR24; + _init = true; +#endif + break; + default: + Q_ASSERT(0); + return; + } +} + +bool QVideoStream::haveMethod(VideoMethod method) const +{ + return _methods & method; +} + +QVideo::VideoMethod QVideoStream::method() const +{ + return _method; +} + +QVideo::VideoMethod QVideoStream::setMethod(VideoMethod method) +{ + if (_methods & method) { + deInit(); + _method = method; + init(); + } + + return _method; +} + +QSize QVideoStream::maxSize() const +{ + return _size; +} + +int QVideoStream::maxWidth() const +{ + return _size.width(); +} + +int QVideoStream::maxHeight() const +{ + return _size.height(); +} + +QSize QVideoStream::size() const +{ + return _size; +} + +int QVideoStream::width() const +{ + return _size.width(); +} + +int QVideoStream::height() const +{ + return _size.height(); +} + +QSize QVideoStream::setSize(const QSize& sz) +{ + _size = sz; + return _size; +} + +int QVideoStream::setWidth(int width) +{ + if (width < 0) + width = 0; + if (width > maxWidth()) + width = maxWidth(); + _size.setWidth(width); + return _size.width(); +} + +int QVideoStream::setHeight(int height) +{ + if (height < 0) + height = 0; + if (height > maxHeight()) + height = maxHeight(); + _size.setHeight(height); + return _size.height(); +} + +QSize QVideoStream::inputSize() const +{ + return _inputSize; +} + +int QVideoStream::inputWidth() const +{ + return _inputSize.width(); +} + +int QVideoStream::inputHeight() const +{ + return _inputSize.height(); +} + +QSize QVideoStream::setInputSize(const QSize& sz) +{ + if (sz == _inputSize) + return _inputSize; + _inputSize = sz; + if (_method & (METHOD_XSHM | METHOD_X11)) { + deInit(); + init(); + } +#ifdef HAVE_GL + if (_method & METHOD_GL) { + d->glwidget->setInputSize(_inputSize); + } +#endif + return _inputSize; +} + +int QVideoStream::setInputWidth(int width) +{ + if (width == _inputSize.width()) + return _inputSize.width(); + _inputSize.setWidth(width); + if (_method & (METHOD_XSHM | METHOD_X11)) { + deInit(); + init(); + } +#ifdef HAVE_GL + if (_method & METHOD_GL) { + d->glwidget->setInputSize(_inputSize); + } +#endif + return _inputSize.width(); +} + +int QVideoStream::setInputHeight(int height) +{ + if (height == _inputSize.height()) + return _inputSize.height(); + _inputSize.setHeight(height); + if (_method & (METHOD_XSHM | METHOD_X11)) { + deInit(); + init(); + } +#ifdef HAVE_GL + if (_method & METHOD_GL) { + d->glwidget->setInputSize(_inputSize); + } +#endif + return _inputSize.height(); +} + +bool QVideoStream::supportsFormat(VideoMethod method, ImageFormat format) +{ + return (bool)(formatsForMethod(method) & format); +} + +QVideo::ImageFormat QVideoStream::formatsForMethod(VideoMethod method) +{ + switch(method) { + case METHOD_XSHM: + case METHOD_X11: + return _xFormat; + case METHOD_XV: + case METHOD_XVSHM: + return FORMAT_YUYV; + case METHOD_GL: + return FORMAT_BGR24; + default: + return FORMAT_NONE; + } +} + +QVideo::ImageFormat QVideoStream::format() const +{ + return _format; +} + +bool QVideoStream::setFormat(ImageFormat format) +{ + if(supportsFormat(_method, format)) { + _format = format; + return true; + } else { + return false; + } +} + +int QVideoStream::displayFrame(const unsigned char *const img) +{ + return displayFrame(img, 0, 0, _inputSize.width(), _inputSize.height()); +} + +int QVideoStream::displayFrame(const unsigned char *const img, int x, int y, int sw, int sh) +{ + Q_ASSERT(_init); + if (!_init) + return -1; + + Q_ASSERT(_methods & _method); + if (!(_methods & _method)) + return -1; + + switch (_method) { + case METHOD_XV: + case METHOD_XVSHM: + return d->xvdev->displayImage(_w, img, + _inputSize.width(), _inputSize.height(), x, y, sw, sh, + _size.width(), _size.height()); + break; + case METHOD_XSHM: +#ifdef HAVE_XSHM + memcpy(d->xim->data,img,d->xim->bytes_per_line*d->xim->height); + XShmPutImage(_w->x11Display(), _w->winId(), d->gc, d->xim, + x, y, + 0, 0, + sw, sh, + 0); + XSync(_w->x11Display(), False); + break; +#else + return -1; +#endif + case METHOD_X11: + memcpy(d->xim->data, img, d->xim->bytes_per_line*d->xim->height); + XPutImage(_w->x11Display(), _w->winId(), d->gc, d->xim, + x, y, + 0, 0, + sw, sh); + XSync(_w->x11Display(), False); + break; + case METHOD_GL: +#ifdef HAVE_GL + d->glwidget->display(img, x, y, sw, sh); +#endif + break; + default: + Q_ASSERT(0); + return -1; + } + + return 0; +} + +QVideoStream& QVideoStream::operator<<(const unsigned char *const img) +{ + displayFrame(img); + return *this; +} + +// --------------------------------------------------------------------------------------- +#ifdef HAVE_GL + +QVideoStreamGLWidget::QVideoStreamGLWidget(QWidget* parent, const char* name) + : QGLWidget(QGLFormat(QGL::DoubleBuffer | QGL::Rgba | QGL::DirectRendering), parent, name), + _tex(0), + _w(parent), + _glfun(false) +{ + kdDebug() << "QVideoStreamGLWidget::QVideoStreamGLWidget()" << endl; + + connect(_w, SIGNAL(resized(int, int)), + this, SLOT(resize(int, int))); + + topLevelWidget()->installEventFilter(this); + _glfunTimer = new QTimer(); +} + +QVideoStreamGLWidget::~QVideoStreamGLWidget() +{ + kdDebug() << "QVideoStreamGLWidget::~QVideoStreamGLWidget()" << endl; + delete _glfunTimer; + + makeCurrent(); + if(_tex != 0) { + glDeleteTextures(1, &_tex); + } +} + +bool QVideoStreamGLWidget::eventFilter(QObject*, QEvent* e) +{ + // For some reason, KeyPress does not work (yields 2), QEvent::KeyPress is unknown... What the f...???? + // I am too lazy to scan the header files for the reason. + if(e->type() == 6) { + QKeyEvent* ke = static_cast<QKeyEvent*>(e); + if(ke->key() == Qt::Key_Pause) { + _glfunTimer->start(500, true); + } else if (_glfunTimer->isActive() && (ke->key() == Qt::Key_Escape)) { + _glfun = !_glfun; + } + } + return false; +} + +void QVideoStreamGLWidget::initializeGL() +{ + kdDebug() << "QVideoStreamGLWidget::initializeGL()" << endl; + setAutoBufferSwap(false); + + QGLFormat f = format(); + glGetIntegerv(GL_MAX_TEXTURE_SIZE, &_maxGL); + kdDebug() << "OpenGL capabilities (* = required):" << endl; + kdDebug() << " Valid context*: " << isValid() << endl; + kdDebug() << " DoubleBuffer*: " << f.doubleBuffer() << endl; + kdDebug() << " Depth: " << f.depth() << endl; + kdDebug() << " RGBA*: " << f.rgba() << endl; + kdDebug() << " Alpha: " << f.alpha() << endl; + kdDebug() << " Accum: " << f.accum() << endl; + kdDebug() << " Stencil: " << f.stencil() << endl; + kdDebug() << " Stereo: " << f.stereo() << endl; + kdDebug() << " DirectRendering*: " << f.directRendering() << endl; + kdDebug() << " Overlay: " << f.hasOverlay() << endl; + kdDebug() << " Plane: " << f.plane() << endl; + kdDebug() << " MAX_TEXTURE_SIZE: " << _maxGL << endl; + + qglClearColor(Qt::black); + glShadeModel(GL_FLAT); + glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + + _vul = QPoint( 4, 10); + _vur = QPoint(-8, 4); + _vll = QPoint(10, -4); + _vlr = QPoint(-8, -10); +} + +void QVideoStreamGLWidget::resizeGL(int w, int h) +{ + _sz = QSize(w, h); + + glViewport(0, 0, w, h); + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glOrtho(0.0, w, 0.0, h, -1, 1); + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + + _ul = QPoint(0, 0); + _ur = QPoint(w, 0); + _ll = QPoint(0, h); + _lr = QPoint(w, h); +} + +void QVideoStreamGLWidget::setInputSize(const QSize& sz) +{ + makeCurrent(); + + _inputSize = sz; + int iw = _inputSize.width(); + int ih = _inputSize.height(); + + if ( (iw > _maxGL) || (ih > _maxGL) ) { + kdWarning() << "QVideoStreamGLWidget::setInputSize(): Texture too large! maxGL: " << _maxGL << endl; + return; + } + + // textures have power-of-two x,y dimensions + int i; + for (i = 0; iw >= (1 << i); i++) + ; + _tw = (1 << i); + for (i = 0; ih >= (1 << i); i++) + ; + _th = (1 << i); + + // Generate texture + if(_tex != 0) { + glDeleteTextures(1, &_tex); + } + glGenTextures(1, &_tex); + glBindTexture(GL_TEXTURE_2D, _tex); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + + // Blank texture + char* dummy = new char[_tw*_th*4]; + memset(dummy, 128, _tw*_th*4); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, _tw, _th, 0, + GL_RGB, GL_UNSIGNED_BYTE, dummy); + delete[] dummy; +} + +void QVideoStreamGLWidget::display(const unsigned char *const img, int x, int y, int sw, int sh) +{ + makeCurrent(); + + // FIXME: Endianess - also support GL_RGB + glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, _inputSize.width(), _inputSize.height(), + GL_BGR, GL_UNSIGNED_BYTE, img); + + // upper right coords + float ur_x = (float)(x + sw) / _tw; + float ur_y = (float)(y + sh) / _th; + + // lower left coords + float ll_x = (float)(x) / _tw; + float ll_y = (float)(y) / _th; + + glEnable(GL_TEXTURE_2D); + glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL); + glBindTexture(GL_TEXTURE_2D, _tex); + if (!_glfun) { + glBegin(GL_QUADS); + glTexCoord2f(ll_x, ur_y); glVertex2i(0, 0 ); + glTexCoord2f(ll_x, ll_y); glVertex2i(0, _sz.height()); + glTexCoord2f(ur_x, ll_y); glVertex2i(_sz.width(), _sz.height()); + glTexCoord2f(ur_x, ur_y); glVertex2i(_sz.width(), 0 ); + glEnd(); + } else { + calc(_ul, _vul); + calc(_ur, _vur); + calc(_ll, _vll); + calc(_lr, _vlr); + + glClear(GL_COLOR_BUFFER_BIT); + + glBegin(GL_QUADS); + glTexCoord2f(0, y); glVertex2i(_ul.x(), _ul.y()); + glTexCoord2f(0, 0); glVertex2i(_ll.x(), _ll.y()); + glTexCoord2f(x, 0); glVertex2i(_lr.x(), _lr.y()); + glTexCoord2f(x, y); glVertex2i(_ur.x(), _ur.y()); + glEnd(); + } + swapBuffers(); + glDisable(GL_TEXTURE_2D); +} + +void QVideoStreamGLWidget::calc(QPoint& p, QPoint& v) +{ + p += v; + + if(p.x() < 0) { + p.setX(-p.x()); + v.setX(-v.x()); + } + if(p.y() < 0) { + p.setY(-p.y()); + v.setY(-v.y()); + } + if(p.x() > _sz.width()) { + p.setX(_sz.width() - (p.x() - _sz.width())); + v.setX(-v.x()); + } + if(p.y() > _sz.height()) { + p.setY(_sz.height() - (p.y() - _sz.height())); + v.setY(-v.y()); + } +} +#endif + +#include "qvideostream.moc" |