You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
423 lines
9.9 KiB
423 lines
9.9 KiB
/**********************************************************************
|
|
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
|
|
**
|
|
** This file is part of Qt/Embedded virtual framebuffer.
|
|
**
|
|
** This file may be used under the terms of the GNU General
|
|
** Public License versions 2.0 or 3.0 as published by the Free
|
|
** Software Foundation and appearing in the files LICENSE.GPL2
|
|
** and LICENSE.GPL3 included in the packaging of this file.
|
|
** Alternatively you may (at your option) use any later version
|
|
** of the GNU General Public License if such license has been
|
|
** publicly approved by Trolltech ASA (or its successors, if any)
|
|
** and the KDE Free Qt Foundation.
|
|
**
|
|
** Please review the following information to ensure GNU General
|
|
** Public Licensing requirements will be met:
|
|
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
|
|
** If you are unsure which license is appropriate for your use, please
|
|
** review the following information:
|
|
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
|
|
** or contact the sales department at sales@trolltech.com.
|
|
**
|
|
** Licensees holding valid Qt Commercial licenses may use this file in
|
|
** accordance with the Qt Commercial License Agreement provided with
|
|
** the Software.
|
|
**
|
|
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
|
|
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
|
|
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
|
|
** herein.
|
|
**
|
|
**********************************************************************/
|
|
|
|
#include "qanimationwriter.h"
|
|
|
|
#define QT_CLEAN_NAMESPACE
|
|
#include <qfile.h>
|
|
|
|
#include <png.h>
|
|
#include <netinet/in.h> // for htonl
|
|
|
|
class QAnimationWriterData {
|
|
public:
|
|
QAnimationWriterData(QIODevice* d) : dev(d)
|
|
{
|
|
framerate = 1000;
|
|
}
|
|
void setFrameRate(int d) { framerate = d; }
|
|
virtual ~QAnimationWriterData() { }
|
|
virtual void setImage(const QImage& src)=0;
|
|
virtual bool canCompose() const { return FALSE; }
|
|
virtual void composeImage(const QImage&, const QPoint& ) { }
|
|
|
|
protected:
|
|
int framerate;
|
|
QIODevice* dev;
|
|
};
|
|
|
|
|
|
class QAnimationWriterMNG : public QAnimationWriterData {
|
|
bool first;
|
|
png_structp png_ptr;
|
|
png_infop info_ptr;
|
|
public:
|
|
QAnimationWriterMNG(QIODevice* d) : QAnimationWriterData(d)
|
|
{
|
|
first = TRUE;
|
|
begin_png();
|
|
}
|
|
|
|
~QAnimationWriterMNG()
|
|
{
|
|
if ( first ) {
|
|
// Eh? Not images.
|
|
QImage dummy(1,1,32);
|
|
setImage(dummy);
|
|
}
|
|
writeMEND();
|
|
end_png();
|
|
}
|
|
|
|
void begin_png()
|
|
{
|
|
png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING,0,0,0);
|
|
info_ptr = png_create_info_struct(png_ptr);
|
|
png_set_compression_level(png_ptr,9);
|
|
png_set_write_fn(png_ptr, (void*)this, write, 0);
|
|
}
|
|
|
|
void end_png()
|
|
{
|
|
png_destroy_write_struct(&png_ptr, &info_ptr);
|
|
}
|
|
|
|
|
|
static void write( png_structp png_ptr, png_bytep data, png_size_t length)
|
|
{
|
|
QAnimationWriterMNG* that = (QAnimationWriterMNG*)png_get_io_ptr(png_ptr);
|
|
/*uint nw =*/ that->dev->writeBlock((const char*)data,length);
|
|
}
|
|
|
|
void writePNG(const QImage& image)
|
|
{
|
|
#if PNG_LIBPNG_VER_MAJOR>1 || ( PNG_LIBPNG_VER_MAJOR==1 && PNG_LIBPNG_VER_MINOR>=5 )
|
|
#warning XXXtnn not too sure about this
|
|
/*
|
|
according to png.h, channels is only used on read, not writes, so we
|
|
should be able to comment this out.
|
|
*/
|
|
#else /* LIBPNG 1.5 */
|
|
info_ptr->channels = 4;
|
|
#endif
|
|
png_set_sig_bytes(png_ptr, 8); // Pretend we already wrote the sig
|
|
png_set_IHDR(png_ptr, info_ptr, image.width(), image.height(),
|
|
8, image.hasAlphaBuffer()
|
|
? PNG_COLOR_TYPE_RGB_ALPHA : PNG_COLOR_TYPE_RGB,
|
|
0, 0, 0);
|
|
png_write_info(png_ptr, info_ptr);
|
|
if ( !image.hasAlphaBuffer() )
|
|
png_set_filler(png_ptr, 0,
|
|
QImage::systemByteOrder() == QImage::BigEndian ?
|
|
PNG_FILLER_BEFORE : PNG_FILLER_AFTER);
|
|
//if ( QImage::systemByteOrder() == QImage::BigEndian ) {
|
|
//png_set_swap_alpha(png_ptr);
|
|
//}
|
|
if ( QImage::systemByteOrder() == QImage::LittleEndian ) {
|
|
png_set_bgr(png_ptr);
|
|
}
|
|
|
|
png_bytep* row_pointers;
|
|
uint height = image.height();
|
|
uchar** jt = image.jumpTable();
|
|
row_pointers=new png_bytep[height];
|
|
uint y;
|
|
for (y=0; y<height; y++) {
|
|
row_pointers[y]=jt[y];
|
|
}
|
|
png_write_image(png_ptr, row_pointers);
|
|
delete [] row_pointers;
|
|
png_write_end(png_ptr, info_ptr);
|
|
end_png();
|
|
begin_png();
|
|
}
|
|
|
|
void writeMHDR( const QSize& size, int framerate )
|
|
{
|
|
dev->writeBlock("\212MNG\r\n\032\n", 8);
|
|
|
|
struct {
|
|
int width;
|
|
int height;
|
|
int framerate;
|
|
int a,b,c;
|
|
int profile;
|
|
} chunk;
|
|
chunk.width = htonl(size.width());
|
|
chunk.height = htonl(size.height());
|
|
chunk.framerate = htonl(framerate);
|
|
chunk.a=0;
|
|
chunk.b=0;
|
|
chunk.c=0;
|
|
chunk.profile= htonl(0x00000003);
|
|
|
|
png_write_chunk(png_ptr, (png_byte*)"MHDR", (png_byte*)&chunk, sizeof(chunk));
|
|
}
|
|
|
|
void writeMEND()
|
|
{
|
|
png_write_chunk(png_ptr, (png_byte*)"MEND", 0, 0);
|
|
}
|
|
|
|
void writeDEFI( const QPoint& offset, const QSize& size )
|
|
{
|
|
struct {
|
|
ushort o;
|
|
uchar s;
|
|
uchar concrete;
|
|
int x,y;
|
|
int lc,rc,tc,bc;
|
|
} chunk;
|
|
chunk.o=0;
|
|
chunk.s=0;
|
|
chunk.concrete=1;
|
|
chunk.x=htonl(offset.x());
|
|
chunk.y=htonl(offset.y());
|
|
chunk.lc=0;
|
|
chunk.rc=0;
|
|
chunk.tc=htonl(INT_MAX);
|
|
chunk.bc=htonl(INT_MAX);
|
|
|
|
png_write_chunk(png_ptr, (png_byte*)"DEFI", (png_byte*)&chunk, sizeof(chunk));
|
|
}
|
|
|
|
void writeFRAM( const QSize& size )
|
|
{
|
|
struct {
|
|
uchar mode;
|
|
uchar n;
|
|
uchar nu;
|
|
uchar d;
|
|
uchar t;
|
|
uchar clip;
|
|
uchar s;
|
|
uchar deltatype;
|
|
uint left;
|
|
uint right;
|
|
uint top;
|
|
uint bottom;
|
|
} chunk;
|
|
chunk.mode=1;
|
|
chunk.n='a';
|
|
chunk.nu=0;
|
|
chunk.d=0;
|
|
chunk.clip=1;
|
|
chunk.t=0;
|
|
chunk.s=0;
|
|
chunk.deltatype=0;
|
|
chunk.left=0;
|
|
chunk.right=htonl(size.width());
|
|
chunk.top=0;
|
|
chunk.bottom=htonl(size.height());
|
|
|
|
png_write_chunk(png_ptr, (png_byte*)"FRAM", (png_byte*)&chunk, sizeof(chunk));
|
|
}
|
|
|
|
void writeMOVE( const QPoint& offset )
|
|
{
|
|
struct {
|
|
uchar filler[3];
|
|
uchar z[5];
|
|
int x,y;
|
|
} chunk;
|
|
memset(chunk.z,0,5);
|
|
chunk.x=htonl(offset.x());
|
|
chunk.y=htonl(offset.y());
|
|
|
|
png_write_chunk(png_ptr, (png_byte*)"MOVE", ((png_byte*)&chunk)+3, sizeof(chunk)-3);
|
|
}
|
|
|
|
void setImage(const QImage& src)
|
|
{
|
|
if ( first ) {
|
|
first = FALSE;
|
|
writeMHDR(src.size(),framerate);
|
|
}
|
|
composeImage(src,QPoint(0,0));
|
|
}
|
|
|
|
bool canCompose() const { return TRUE; }
|
|
|
|
void composeImage(const QImage& src, const QPoint& offset)
|
|
{
|
|
writeMOVE(offset);
|
|
//writeFRAM(src.size());
|
|
writePNG(src);
|
|
}
|
|
};
|
|
|
|
QAnimationWriter::QAnimationWriter( const QString& filename, const char* format )
|
|
{
|
|
if ( QCString(format) != "MNG" ) {
|
|
qWarning("Format \"%s\" not supported, only MNG", format);
|
|
dev = 0;
|
|
d = 0;
|
|
} else {
|
|
QFile *f = new QFile(filename);
|
|
f->open(IO_WriteOnly);
|
|
dev = f;
|
|
d = new QAnimationWriterMNG(dev);
|
|
}
|
|
}
|
|
|
|
bool QAnimationWriter::okay() const
|
|
{
|
|
return dev && dev->status() == IO_Ok;
|
|
}
|
|
|
|
QAnimationWriter::~QAnimationWriter()
|
|
{
|
|
delete d;
|
|
delete dev;
|
|
}
|
|
|
|
void QAnimationWriter::setFrameRate(int r)
|
|
{
|
|
if (d) d->setFrameRate(r);
|
|
}
|
|
|
|
void QAnimationWriter::appendFrame(const QImage& frm, const QPoint& offset)
|
|
{
|
|
QImage frame = frm.convertDepth(32);
|
|
const int alignx = 1;
|
|
if ( dev ) {
|
|
if ( prev.isNull() || !d->canCompose() ) {
|
|
d->setImage(frame);
|
|
} else {
|
|
bool done;
|
|
int minx, maxx, miny, maxy;
|
|
int w = frame.width();
|
|
int h = frame.height();
|
|
|
|
QRgb** jt = (QRgb**)frame.jumpTable();
|
|
QRgb** pjt = (QRgb**)prev.jumpTable() + offset.y();
|
|
|
|
// Find left edge of change
|
|
done = FALSE;
|
|
for (minx = 0; minx < w && !done; minx++) {
|
|
for (int ty = 0; ty < h; ty++) {
|
|
if ( jt[ty][minx] != pjt[ty][minx+offset.x()] ) {
|
|
done = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
minx--;
|
|
|
|
// Find right edge of change
|
|
done = FALSE;
|
|
for (maxx = w-1; maxx >= 0 && !done; maxx--) {
|
|
for (int ty = 0; ty < h; ty++) {
|
|
if ( jt[ty][maxx] != pjt[ty][maxx+offset.x()] ) {
|
|
done = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
maxx++;
|
|
|
|
// Find top edge of change
|
|
done = FALSE;
|
|
for (miny = 0; miny < h && !done; miny++) {
|
|
for (int tx = 0; tx < w; tx++) {
|
|
if ( jt[miny][tx] != pjt[miny][tx+offset.x()] ) {
|
|
done = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
miny--;
|
|
|
|
// Find right edge of change
|
|
done = FALSE;
|
|
for (maxy = h-1; maxy >= 0 && !done; maxy--) {
|
|
for (int tx = 0; tx < w; tx++) {
|
|
if ( jt[maxy][tx] != pjt[maxy][tx+offset.x()] ) {
|
|
done = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
maxy++;
|
|
|
|
if ( minx > maxx ) minx=maxx=0;
|
|
if ( miny > maxy ) miny=maxy=0;
|
|
|
|
if ( alignx > 1 ) {
|
|
minx -= minx % alignx;
|
|
maxx = maxx - maxx % alignx + alignx - 1;
|
|
}
|
|
|
|
int dw = maxx-minx+1;
|
|
int dh = maxy-miny+1;
|
|
|
|
QImage diff(dw, dh, 32);
|
|
|
|
diff.setAlphaBuffer(TRUE);
|
|
int x, y;
|
|
for (y = 0; y < dh; y++) {
|
|
QRgb* li = (QRgb*)frame.scanLine(y+miny)+minx;
|
|
QRgb* lp = (QRgb*)prev.scanLine(y+miny+offset.y())+minx+offset.x();
|
|
QRgb* ld = (QRgb*)diff.scanLine(y);
|
|
if ( alignx ) {
|
|
for (x = 0; x < dw; x+=alignx) {
|
|
int i;
|
|
for (i=0; i<alignx; i++) {
|
|
if ( li[x+i] != lp[x+i] )
|
|
break;
|
|
}
|
|
if ( i == alignx ) {
|
|
// All the same
|
|
for (i=0; i<alignx; i++) {
|
|
ld[x+i] = qRgba(0,0,0,0);
|
|
}
|
|
} else {
|
|
// Some different
|
|
for (i=0; i<alignx; i++) {
|
|
ld[x+i] = 0xff000000 | li[x+i];
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
for (x = 0; x < dw; x++) {
|
|
if ( li[x] != lp[x] )
|
|
ld[x] = 0xff000000 | li[x];
|
|
else
|
|
ld[x] = qRgba(0,0,0,0);
|
|
}
|
|
}
|
|
}
|
|
qDebug("%d,%d %d,%d",minx,miny,offset.x(),offset.y());
|
|
d->composeImage(diff,QPoint(minx,miny)+offset);
|
|
}
|
|
if ( prev.isNull() || ( prev.size() == frame.size() && offset == QPoint(0,0) ) ) {
|
|
prev = frame;
|
|
} else {
|
|
bitBlt(&prev,offset.x(),offset.y(),&frame,0,0,frame.width(),frame.height());
|
|
}
|
|
}
|
|
}
|
|
|
|
void QAnimationWriter::appendFrame(const QImage& frm)
|
|
{
|
|
appendFrame(frm,QPoint(0,0));
|
|
}
|
|
|
|
void QAnimationWriter::appendBlankFrame()
|
|
{
|
|
QImage i(1,1,32);
|
|
i.setAlphaBuffer(TRUE);
|
|
i.fill(0);
|
|
d->composeImage(i,QPoint(0,0));
|
|
}
|