From 844325085130e79ec503a0ab5b8eeafa25a7bdb1 Mon Sep 17 00:00:00 2001 From: sandman Date: Tue, 24 Sep 2002 18:55:16 +0000 Subject: Documentation for the video magic (for Holger ;) Small interface changes (better method names) --- (limited to 'noncore/multimedia/opieplayer2/xinevideowidget.cpp') diff --git a/noncore/multimedia/opieplayer2/xinevideowidget.cpp b/noncore/multimedia/opieplayer2/xinevideowidget.cpp index d06d62a..9b26d41 100644 --- a/noncore/multimedia/opieplayer2/xinevideowidget.cpp +++ b/noncore/multimedia/opieplayer2/xinevideowidget.cpp @@ -1,9 +1,8 @@ /*                 This file is part of the Opie Project - -              Copyright (c) 2002 Max Reiss - Copyright (c) 2002 LJP <> + + Copyright (c) 2002 Robert Griebl Copyright (c) 2002 Holger Freyther =. .=l. @@ -29,7 +28,7 @@ If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - + */ #include @@ -45,229 +44,220 @@ #include "xinevideowidget.h" +// 0 deg rot: copy a line from src to dst (use libc memcpy) + +// 180 deg rot: copy a line from src to dst reversed static inline void memcpy_rev ( void *dst, void *src, size_t len ) { - ((char *) src ) += len; + ((char *) src) += len; - len >>= 1; - while ( len-- ) - *((short int *) dst )++ = *--((short int *) src ); + len >>= 1; + while ( len-- ) + *((short int *) dst) ++ = *--((short int *) src); } -static inline void memcpy_step ( void *dst, void *src, size_t len, size_t step ) +// 90 deg rot: copy a column from src to dst + +static inline void memcpy_step ( void *dst, void *src, size_t len, size_t linestep ) { - len >>= 1; - while ( len-- ) { - *((short int *) dst )++ = *((short int *) src ); - ((char *) src ) += step; - } + len >>= 1; + while ( len-- ) { + *((short int *) dst) ++ = *((short int *) src); + ((char * ) src) += linestep; + } } -static inline void memcpy_step_rev ( void *dst, void *src, size_t len, size_t step ) +// 270 deg rot: copy a column from src to dst reversed + +static inline void memcpy_step_rev ( void *dst, void *src, size_t len, size_t linestep ) { - len >>= 1; + len >>= 1; - ((char *) src ) += ( len * step ); + ((char *) src) += ( len * linestep ); - while ( len-- ) { - ((char *) src ) -= step; - *((short int *) dst )++ = *((short int *) src ); - } + while ( len-- ) { + ((char *) src) -= linestep; + *((short int *) dst) ++ = *((short int *) src); + } } XineVideoWidget::XineVideoWidget ( QWidget* parent, const char* name ) - : QWidget ( parent, name, WRepaintNoErase | WResizeNoErase ) + : QWidget ( parent, name, WRepaintNoErase | WResizeNoErase ) { - setBackgroundMode ( NoBackground ); + setBackgroundMode ( NoBackground ); - m_image = 0; - m_buff = 0; - m_bytes_per_line_fb = qt_screen-> linestep ( ); - m_bytes_per_pixel = ( qt_screen->depth() + 7 ) / 8; - m_rotation = 0; + m_logo = 0; + m_buff = 0; + m_bytes_per_line_fb = qt_screen-> linestep ( ); + m_bytes_per_pixel = ( qt_screen-> depth ( ) + 7 ) / 8; + m_rotation = 0; } XineVideoWidget::~XineVideoWidget ( ) { - delete m_image; + delete m_logo; } void XineVideoWidget::clear ( ) { - m_buff = 0; - repaint ( false ); + m_buff = 0; + repaint ( false ); } void XineVideoWidget::paintEvent ( QPaintEvent * ) { - //qWarning( "painting <<<" ); - if ( m_buff == 0 ) { - QPainter p ( this ); - p. fillRect ( rect ( ), black ); - if ( m_image ) - p. drawImage ( 0, 0, *m_image ); - //qWarning ( "logo\n" ); - } - else { -// qWarning ( "paintevent\n" ); - - QArray qt_bug_workaround_clip_rects; - - { - QDirectPainter dp ( this ); - - int rot = dp. transformOrientation ( ) + m_rotation; - - uchar *fb = dp. frameBuffer ( ); - uchar *frame = m_buff; // rot == 0 ? m_buff : m_buff + ( m_thisframe. height ( ) - 1 ) * m_bytes_per_line_frame; - - QRect framerect = qt_screen-> mapToDevice ( QRect ( mapToGlobal ( m_thisframe. topLeft ( )), m_thisframe. size ( )), QSize ( qt_screen-> width ( ), qt_screen-> height ( ))); - - qt_bug_workaround_clip_rects. resize ( dp. numRects ( )); - - for ( int i = dp. numRects ( ) - 1; i >= 0; i-- ) { - const QRect &clip = dp. rect ( i ); - - qt_bug_workaround_clip_rects [i] = qt_screen-> mapFromDevice ( clip, QSize ( qt_screen-> width ( ), qt_screen-> height ( ))); - - uchar *dst = fb + ( clip. x ( ) * m_bytes_per_pixel ) + ( clip. y ( ) * m_bytes_per_line_fb ); - uchar *src = frame; - - switch ( rot ) { - case 0: src += ( (( clip. x ( ) - framerect. x ( )) * m_bytes_per_pixel ) + (( clip. y ( ) - framerect. y ( )) * m_bytes_per_line_frame ) ); break; - case 1: src += ( (( clip. y ( ) - framerect. y ( )) * m_bytes_per_pixel ) + (( clip. x ( ) - framerect. x ( )) * m_bytes_per_line_frame ) + (( framerect. height ( ) - 1 ) * m_bytes_per_pixel ) ); break; - case 2: src += ( (( clip. x ( ) - framerect. x ( )) * m_bytes_per_pixel ) + (( clip. y ( ) - framerect. y ( )) * m_bytes_per_line_frame ) + (( framerect. height ( ) - 1 ) * m_bytes_per_line_frame ) ); break; - case 3: src += ( (( clip. y ( ) - framerect. y ( )) * m_bytes_per_pixel ) + (( clip. x ( ) - framerect. x ( )) * m_bytes_per_line_frame ) ); break; - default: break; - } - - uint leftfill = 0; - uint framefill = 0; - uint rightfill = 0; - uint clipwidth = clip. width ( ) * m_bytes_per_pixel; - - if ( clip. left ( ) < framerect. left ( )) - leftfill = (( framerect. left ( ) - clip. left ( )) * m_bytes_per_pixel ) framerect. right ( )) - rightfill = (( clip. right ( ) - framerect. right ( )) * m_bytes_per_pixel ) framerect. bottom ( ))) { - memset ( dst, 0, clipwidth ); - } - else { - if ( leftfill ) - memset ( dst, 0, leftfill ); - - if ( framefill ) { - switch ( rot ) { - case 0: memcpy ( dst + leftfill, src, framefill ); break; - case 1: memcpy_step ( dst + leftfill, src, framefill, m_bytes_per_line_frame ); break; - case 2: memcpy_rev ( dst + leftfill, src, framefill ); break; - case 3: memcpy_step_rev ( dst + leftfill, src, framefill, m_bytes_per_line_frame ); break; - default: break; - } - } - if ( rightfill ) - memset ( dst + leftfill + framefill, 0, rightfill ); - } - - dst += m_bytes_per_line_fb; - - switch ( rot ) { - case 0: src += m_bytes_per_line_frame; break; - case 1: src -= m_bytes_per_pixel; break; - case 2: src -= m_bytes_per_line_frame; break; - case 3: src += m_bytes_per_pixel; break; - default: break; - } - } - } - } - //qWarning ( " ||| painting |||" ); - { - // QVFB hack by MArtin Jones - QPainter p ( this ); - - for ( int i = qt_bug_workaround_clip_rects. size ( ) - 1; i >= 0; i-- ) { - p. fillRect ( QRect ( mapFromGlobal ( qt_bug_workaround_clip_rects [i]. topLeft ( )), qt_bug_workaround_clip_rects [i]. size ( )), QBrush ( NoBrush ) ); - } - } - } - //qWarning( "painting >>>" ); -} - - -void XineVideoWidget::setImage ( QImage* image ) -{ - delete m_image; - m_image = image; -} - -void XineVideoWidget::setImage ( uchar* img, int w, int h, int bpl ) -{ - bool rot90 = (( -m_rotation ) & 1 ); - - if ( rot90 ) { - int d = w; - w = h; - h = d; - } - - m_lastframe = m_thisframe; - m_thisframe. setRect (( width ( ) - w ) / 2, ( height ( ) - h ) / 2, w , h ); - -// qDebug ( "Frame: %d,%d - %dx%d", ( width ( ) - w ) / 2, ( height ( ) - h ) / 2, w , h ); - - m_buff = img; - m_bytes_per_line_frame = bpl; - - repaint ((( m_thisframe & m_lastframe ) != m_lastframe ) ? m_lastframe : m_thisframe, false ); -} - -void XineVideoWidget::resizeEvent ( QResizeEvent * ) -{ - QSize s = size ( ); - bool fs = ( s == qApp-> desktop ( )-> size ( )); - - m_rotation = fs ? -qt_screen-> transformOrientation ( ) : 0; - - if ( fs && qt_screen-> isTransformed ( )) { - s = qt_screen-> mapToDevice ( s ); - } - -// qDebug ( "\n\nResize: %dx%d, Rot: %d", s.width(),s.height(),m_rotation ); - - emit videoResized ( s ); -} - - -void XineVideoWidget::mousePressEvent ( QMouseEvent * /*me*/ ) -{ - QWidget *p = parentWidget ( ); + if ( m_buff == 0 ) { + QPainter p ( this ); + p. fillRect ( rect ( ), black ); + if ( m_logo ) + p. drawImage ( 0, 0, *m_logo ); + } + else { + // Qt needs to be notified which areas were really updated .. strange + QArray qt_bug_workaround_clip_rects; + + { + QDirectPainter dp ( this ); + + int rot = dp. transformOrientation ( ) + m_rotation; // device rotation + custom rotation + + uchar *fb = dp. frameBuffer ( ); + uchar *frame = m_buff; + + // where is the video frame in fb coordinates + QRect framerect = qt_screen-> mapToDevice ( QRect ( mapToGlobal ( m_thisframe. topLeft ( )), m_thisframe. size ( )), QSize ( qt_screen-> width ( ), qt_screen-> height ( ))); + + qt_bug_workaround_clip_rects. resize ( dp. numRects ( )); + + for ( int i = dp. numRects ( ) - 1; i >= 0; i-- ) { + const QRect &clip = dp. rect ( i ); + + qt_bug_workaround_clip_rects [ i ] = qt_screen-> mapFromDevice ( clip, QSize ( qt_screen-> width ( ), qt_screen-> height ( ))); + + uchar *dst = fb + ( clip. x ( ) * m_bytes_per_pixel ) + ( clip. y ( ) * m_bytes_per_line_fb ); // clip x/y in the fb + uchar *src = frame; + + // Adjust the start the source data based on the rotation (xine frame) + switch ( rot ) { + case 0: src += ((( clip. x ( ) - framerect. x ( )) * m_bytes_per_pixel ) + (( clip. y ( ) - framerect. y ( )) * m_bytes_per_line_frame )); break; + case 1: src += ((( clip. y ( ) - framerect. y ( )) * m_bytes_per_pixel ) + (( clip. x ( ) - framerect. x ( )) * m_bytes_per_line_frame ) + (( framerect. height ( ) - 1 ) * m_bytes_per_pixel )); break; + case 2: src += ((( clip. x ( ) - framerect. x ( )) * m_bytes_per_pixel ) + (( clip. y ( ) - framerect. y ( )) * m_bytes_per_line_frame ) + (( framerect. height ( ) - 1 ) * m_bytes_per_line_frame )); break; + case 3: src += ((( clip. y ( ) - framerect. y ( )) * m_bytes_per_pixel ) + (( clip. x ( ) - framerect. x ( )) * m_bytes_per_line_frame )); break; + default: break; + } + + // all of the following widths/heights are fb relative (0deg rotation) + + uint leftfill = 0; // black border on the "left" side of the video frame + uint framefill = 0; // "width" of the video frame + uint rightfill = 0; // black border on the "right" side of the video frame + uint clipwidth = clip. width ( ) * m_bytes_per_pixel; // "width" of the current clip rect + + if ( clip. left ( ) < framerect. left ( )) + leftfill = (( framerect. left ( ) - clip. left ( )) * m_bytes_per_pixel ) < ? clipwidth; + if ( clip. right ( ) > framerect. right ( )) + rightfill = (( clip. right ( ) - framerect. right ( )) * m_bytes_per_pixel ) < ? clipwidth; + + framefill = clipwidth - ( leftfill + rightfill ); + + for ( int y = clip. top ( ); y <= clip. bottom ( ); y++ ) { + if (( y < framerect. top ( )) || ( y > framerect. bottom ( ))) { + // "above" or "below" the video -> black + memset ( dst, 0, clipwidth ); + } + else { + if ( leftfill ) + memset ( dst, 0, leftfill ); // "left" border -> black + + if ( framefill ) { // blit in the video frame + // see above for an explanation of the different memcpys + + switch ( rot ) { + case 0: memcpy ( dst + leftfill, src, framefill ); break; + case 1: memcpy_step ( dst + leftfill, src, framefill, m_bytes_per_line_frame ); break; + case 2: memcpy_rev ( dst + leftfill, src, framefill ); break; + case 3: memcpy_step_rev ( dst + leftfill, src, framefill, m_bytes_per_line_frame ); break; + default: break; + } + if ( rightfill ) + memset ( dst + leftfill + framefill, 0, rightfill ); // "right" border -> black + } + + dst += m_bytes_per_line_fb; // advance one line in the framebuffer + + // advance one "line" in the xine frame data + switch ( rot ) { + case 0: src += m_bytes_per_line_frame; break; + case 1: src -= m_bytes_per_pixel; break; + case 2: src -= m_bytes_per_line_frame; break; + case 3: src += m_bytes_per_pixel; break; + default: break; + } + } + } + + { + // QVFB hack by Martin Jones + // We need to "touch" all affected clip rects with a normal QPainter in addition to the QDirectPainter + + QPainter p ( this ); + + for ( int i = qt_bug_workaround_clip_rects. size ( ) - 1; i >= 0; i-- ) { + p. fillRect ( QRect ( mapFromGlobal ( qt_bug_workaround_clip_rects [ i ]. topLeft ( )), qt_bug_workaround_clip_rects [ i ]. size ( )), QBrush ( NoBrush )); + } + } + } + } + + QImage *XineVideoWidget::logo ( ) const { + return m_logo; + } - if ( p ) { - // QMouseEvent pme ( QEvent::MouseButtonPress, mapToParent ( me-> pos ( )), me-> globalPos ( ), me-> button ( ), me-> state ( )); + void XineVideoWidget::setLogo ( QImage * image ) { + delete m_logo; + m_logo = image; + } - // QApplication::sendEvent ( p, &pme ); - // emit clicked(); - } -} - -void XineVideoWidget::mouseReleaseEvent ( QMouseEvent * /*me*/ ) -{ - QWidget *p = parentWidget ( ); + void XineVideoWidget::setVideoFrame ( uchar * img, int w, int h, int bpl ) { + bool rot90 = (( -m_rotation ) & 1 ); - if ( p ) { - // QMouseEvent pme ( QEvent::MouseButtonRelease, mapToParent ( me-> pos ( )), me-> globalPos ( ), me-> button ( ), me-> state ( )); + if ( rot90 ) { // if the rotation is 90 or 270 we have to swap width / height + int d = w; + w = h; + h = d; + } - // QApplication::sendEvent ( p, &pme ); - emit clicked(); - } -} + m_lastframe = m_thisframe; + m_thisframe. setRect (( width ( ) - w ) / 2, ( height ( ) - h ) / 2, w , h ); + + m_buff = img; + m_bytes_per_line_frame = bpl; + + // only repaint the area that *really* needs to be repainted + + repaint (( + } + + void XineVideoWidget::resizeEvent ( QResizeEvent * ) { + QSize s = size ( ); + bool fs = ( s == qApp-> desktop ( ) -> size ( )); + + // if we are in fullscreen mode, do not rotate the video + // (!! the paint routine uses m_rotation + qt_screen-> transformOrientation() !!) + + m_rotation = fs ? -qt_screen-> transformOrientation ( ) : 0; + + if ( fs && qt_screen-> isTransformed ( )) + s = qt_screen-> mapToDevice ( s ); + + emit videoResized ( s ); + } + + + void XineVideoWidget::mouseReleaseEvent ( QMouseEvent * ) { + emit clicked ( ); + } -- cgit v0.9.0.2