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-rw-r--r--tools/tqvfb/qanimationwriter.cpp421
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diff --git a/tools/tqvfb/qanimationwriter.cpp b/tools/tqvfb/qanimationwriter.cpp
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-/**********************************************************************
-** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
-**
-** This file is part of TQt/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 TQt 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 TQt Commercial licenses may use this file in
-** accordance with the TQt 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"
-
-#include <ntqfile.h>
-
-#include <png.h>
-#include <netinet/in.h> // for htonl
-
-class TQAnimationWriterData {
-public:
- TQAnimationWriterData(TQIODevice* d) : dev(d)
- {
- framerate = 1000;
- }
- void setFrameRate(int d) { framerate = d; }
- virtual ~TQAnimationWriterData() { }
- virtual void setImage(const TQImage& src)=0;
- virtual bool canCompose() const { return FALSE; }
- virtual void composeImage(const TQImage&, const TQPoint& ) { }
-
-protected:
- int framerate;
- TQIODevice* dev;
-};
-
-
-class TQAnimationWriterMNG : public TQAnimationWriterData {
- bool first;
- png_structp png_ptr;
- png_infop info_ptr;
-public:
- TQAnimationWriterMNG(TQIODevice* d) : TQAnimationWriterData(d)
- {
- first = TRUE;
- begin_png();
- }
-
- ~TQAnimationWriterMNG()
- {
- if ( first ) {
- // Eh? Not images.
- TQImage 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)
- {
- TQAnimationWriterMNG* that = (TQAnimationWriterMNG*)png_get_io_ptr(png_ptr);
- /*uint nw =*/ that->dev->writeBlock((const char*)data,length);
- }
-
- void writePNG(const TQImage& 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,
- TQImage::systemByteOrder() == TQImage::BigEndian ?
- PNG_FILLER_BEFORE : PNG_FILLER_AFTER);
- //if ( TQImage::systemByteOrder() == TQImage::BigEndian ) {
- //png_set_swap_alpha(png_ptr);
- //}
- if ( TQImage::systemByteOrder() == TQImage::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 TQSize& 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 TQPoint& offset, const TQSize& 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 TQSize& 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 TQPoint& 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 TQImage& src)
- {
- if ( first ) {
- first = FALSE;
- writeMHDR(src.size(),framerate);
- }
- composeImage(src,TQPoint(0,0));
- }
-
- bool canCompose() const { return TRUE; }
-
- void composeImage(const TQImage& src, const TQPoint& offset)
- {
- writeMOVE(offset);
- //writeFRAM(src.size());
- writePNG(src);
- }
-};
-
-TQAnimationWriter::TQAnimationWriter( const TQString& filename, const char* format )
-{
- if ( TQCString(format) != "MNG" ) {
- tqWarning("Format \"%s\" not supported, only MNG", format);
- dev = 0;
- d = 0;
- } else {
- TQFile *f = new TQFile(filename);
- f->open(IO_WriteOnly);
- dev = f;
- d = new TQAnimationWriterMNG(dev);
- }
-}
-
-bool TQAnimationWriter::okay() const
-{
- return dev && dev->status() == IO_Ok;
-}
-
-TQAnimationWriter::~TQAnimationWriter()
-{
- delete d;
- delete dev;
-}
-
-void TQAnimationWriter::setFrameRate(int r)
-{
- if (d) d->setFrameRate(r);
-}
-
-void TQAnimationWriter::appendFrame(const TQImage& frm, const TQPoint& offset)
-{
- TQImage 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();
-
- TQRgb** jt = (TQRgb**)frame.jumpTable();
- TQRgb** pjt = (TQRgb**)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;
-
- TQImage diff(dw, dh, 32);
-
- diff.setAlphaBuffer(TRUE);
- int x, y;
- for (y = 0; y < dh; y++) {
- TQRgb* li = (TQRgb*)frame.scanLine(y+miny)+minx;
- TQRgb* lp = (TQRgb*)prev.scanLine(y+miny+offset.y())+minx+offset.x();
- TQRgb* ld = (TQRgb*)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] = tqRgba(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] = tqRgba(0,0,0,0);
- }
- }
- }
-tqDebug("%d,%d %d,%d",minx,miny,offset.x(),offset.y());
- d->composeImage(diff,TQPoint(minx,miny)+offset);
- }
- if ( prev.isNull() || ( prev.size() == frame.size() && offset == TQPoint(0,0) ) ) {
- prev = frame;
- } else {
- bitBlt(&prev,offset.x(),offset.y(),&frame,0,0,frame.width(),frame.height());
- }
- }
-}
-
-void TQAnimationWriter::appendFrame(const TQImage& frm)
-{
- appendFrame(frm,TQPoint(0,0));
-}
-
-void TQAnimationWriter::appendBlankFrame()
-{
- TQImage i(1,1,32);
- i.setAlphaBuffer(TRUE);
- i.fill(0);
- d->composeImage(i,TQPoint(0,0));
-}
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