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Diffstat (limited to 'tqtinterface/qt4/src/kernel/tqmngio.cpp')
| -rw-r--r-- | tqtinterface/qt4/src/kernel/tqmngio.cpp | 464 |
1 files changed, 0 insertions, 464 deletions
diff --git a/tqtinterface/qt4/src/kernel/tqmngio.cpp b/tqtinterface/qt4/src/kernel/tqmngio.cpp deleted file mode 100644 index 250fda1..0000000 --- a/tqtinterface/qt4/src/kernel/tqmngio.cpp +++ /dev/null @@ -1,464 +0,0 @@ -/**************************************************************************** -** -** Implementation of MNG TQImage IOHandler -** -** Created : 970521 -** -** Copyright (C) 1997-2008 Trolltech ASA. All rights reserved. -** -** This file is part of the kernel module of the TQt GUI Toolkit. -** -** 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. -** -** This file may be used under the terms of the Q Public License as -** defined by Trolltech ASA and appearing in the file LICENSE.TQPL -** included in the packaging of this file. 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. -** -**********************************************************************/ - -#ifndef TQT_CLEAN_NAMESPACE -#define TQT_CLEAN_NAMESPACE -#endif - -#include "tqdatetime.h" - -#ifndef TQT_NO_IMAGEIO_MNG - -#include "tqimage.h" -#include "tqasyncimageio.h" -#include "tqiodevice.h" -#include "tqmngio.h" - -// Define XMD_H prohibits the included headers of libmng.h to typedef INT32. -// This is needed for Borland with STL support, since in that case, INT32 is -// already defined by some Borland header. -#define XMD_H -#if defined(TQ_OS_UNIXWARE) -# define HAVE_BOOLEAN // libjpeg under Unixware seems to need this -#endif -#include <libmng.h> -#include <stdlib.h> - - -#ifndef TQT_NO_ASYNC_IMAGE_IO - -class TQMNGFormat : public TQImageFormat { -public: - TQMNGFormat(); - virtual ~TQMNGFormat(); - - int decode(TQImage& img, TQImageConsumer* consumer, - const uchar* buffer, int length); - - bool openstream() - { - // ### We should figure out how many loops an MNG has, but for now always assume infinite. - if (consumer) - consumer->setLooping(0); - return TRUE; - } - bool closestream( ) - { - if (consumer) - consumer->end(); - return TRUE; - } - bool readdata( mng_ptr pBuf, mng_uint32 iBuflen, mng_uint32p pRead ) - { - uint m = ndata + nbuffer - ubuffer; - if ( iBuflen > m ) { - iBuflen = m; - } - *pRead = iBuflen; - uint n = nbuffer-ubuffer; - if ( iBuflen < n ) { - // enough in buffer - memcpy(pBuf, buffer+ubuffer, iBuflen); - ubuffer += iBuflen; - return TRUE; - } - if ( n ) { - // consume buffer - memcpy(pBuf, buffer+ubuffer, n ); - pBuf = (mng_ptr)((char*)pBuf + n); - iBuflen -= n; - ubuffer = nbuffer; - } - if ( iBuflen ) { - // fill from incoming data - memcpy(pBuf, data, iBuflen); - data += iBuflen; - ndata -= iBuflen; - } - return TRUE; - } - bool errorproc( mng_int32 iErrorcode, - mng_int8 /*iSeverity*/, - mng_chunkid iChunkname, - mng_uint32 /*iChunkseq*/, - mng_int32 iExtra1, - mng_int32 iExtra2, - mng_pchar zErrortext ) - { - qWarning("MNG error %d: %s; chunk %c%c%c%c; subcode %d:%d", - iErrorcode, zErrortext ? zErrortext : "", - (iChunkname>>24)&0xff, - (iChunkname>>16)&0xff, - (iChunkname>>8)&0xff, - (iChunkname>>0)&0xff, - iExtra1,iExtra2); - return TRUE; - } - bool processheader( mng_uint32 iWidth, mng_uint32 iHeight ) - { - image->create(iWidth,iHeight,32); - image->setAlphaBuffer(TRUE); - memset(image->bits(),0,iWidth*iHeight*4); - consumer->setSize(iWidth,iHeight); - mng_set_canvasstyle(handle, - TQImage::systemByteOrder() == TQImage::LittleEndian - ? MNG_CANVAS_BGRA8 : MNG_CANVAS_ARGB8 ); - return TRUE; - } - mng_ptr getcanvasline( mng_uint32 iLinenr ) - { - return image->scanLine(iLinenr); - } - mng_bool refresh( mng_uint32 x, mng_uint32 y, mng_uint32 w, mng_uint32 h ) - { - TQRect r(x,y,w,h); - consumer->changed(r); - consumer->setFramePeriod(0); - consumer->frameDone(); - return TRUE; - } - mng_uint32 gettickcount( ) - { - return timer.elapsed() - losttime; - } - bool settimer( mng_uint32 iMsecs ) - { - consumer->setFramePeriod(iMsecs); - consumer->frameDone(); - state = Time; - losingtimer.start(); - losttime -= iMsecs; - return TRUE; - } - -private: - // Animation-level information - enum { MovieStart, Time, Data, Data2 } state; - - // Image-level information - mng_handle handle; - - // For storing unused data - uchar *buffer; - uint maxbuffer; - uint nbuffer; - - // Timing - TQTime timer; - TQTime losingtimer; - int losttime; - - void enlargeBuffer(uint n) - { - if ( n > maxbuffer ) { - maxbuffer = n; - buffer = (uchar*)realloc(buffer,n); - } - } - - // Temporary locals during single data-chunk processing - const uchar* data; - uint ndata; - uint ubuffer; - TQImageConsumer* consumer; - TQImage* image; -}; - -class TQMNGFormatType : public TQImageFormatType -{ - TQImageFormat* decoderFor(const uchar* buffer, int length); - const char* formatName() const; -}; - - -/* - \class TQMNGFormat tqmngio.h - \brief Incremental image decoder for MNG image format. - - \ingroup images - \ingroup graphics - - This subclass of TQImageFormat decodes MNG format images, - including animated MNGs. - - Animated MNG images are standard MNG images. The MNG standard - defines two extension chunks that are useful for animations: - - <dl> - <dt>gIFg - GIF-like Graphic Control Extension - <dd>Includes frame disposal, user input flag (we ignore this), - and inter-frame delay. - <dt>gIFx - GIF-like Application Extension - <dd>Multi-purpose, but we just use the Netscape extension - which specifies looping. - </dl> - - The subimages usually contain a offset chunk (oFFs) but need not. - - The first image defines the "screen" size. Any subsequent image that - doesn't fit is clipped. - -TODO: decide on this point. gIFg gives disposal types, so it can be done. - All images paste (\e not composite, just place all-channel copying) - over the previous image to produce a subsequent frame. -*/ - -/* - \class TQMNGFormatType tqasyncimageio.h - \brief Incremental image decoder for MNG image format. - - \ingroup images - \ingroup graphics - \ingroup io - - This subclass of TQImageFormatType recognizes MNG - format images, creating a TQMNGFormat when required. An instance - of this class is created automatically before any other factories, - so you should have no need for such objects. -*/ - -TQImageFormat* TQMNGFormatType::decoderFor( const uchar* buffer, int length ) -{ - if (length < 8) return 0; - - if (buffer[0]==138 // MNG signature - && buffer[1]=='M' - && buffer[2]=='N' - && buffer[3]=='G' - && buffer[4]==13 - && buffer[5]==10 - && buffer[6]==26 - && buffer[7]==10 - || buffer[0]==139 // JNG signature - && buffer[1]=='J' - && buffer[2]=='N' - && buffer[3]=='G' - && buffer[4]==13 - && buffer[5]==10 - && buffer[6]==26 - && buffer[7]==10 -#ifdef TQT_NO_IMAGEIO_PNG // if we don't have native PNG support use libmng - || buffer[0]==137 // PNG signature - && buffer[1]=='P' - && buffer[2]=='N' - && buffer[3]=='G' - && buffer[4]==13 - && buffer[5]==10 - && buffer[6]==26 - && buffer[7]==10 -#endif - ) - return new TQMNGFormat; - return 0; -} - -const char* TQMNGFormatType::formatName() const -{ - return "MNG"; -} - - -/*! - Constructs a TQMNGFormat. -*/ -TQMNGFormat::TQMNGFormat() -{ - state = MovieStart; - handle = 0; - nbuffer = 0; - maxbuffer = 0; - buffer = 0; - losttime = 0; -} - -/* - Destroys a TQMNGFormat. -*/ -TQMNGFormat::~TQMNGFormat() -{ - // We're setting the consumer to 0 since it may have been - // deleted by read_async_image in qimage.cpp - consumer = 0; - if (handle) mng_cleanup(&handle); -} - - -// C-callback to C++-member-function conversion -// -static mng_bool openstream( mng_handle handle ) -{ - return ((TQMNGFormat*)mng_get_userdata(handle))->openstream(); -} -static mng_bool closestream( mng_handle handle ) -{ - return ((TQMNGFormat*)mng_get_userdata(handle))->closestream(); -} -static mng_bool readdata( mng_handle handle, mng_ptr pBuf, mng_uint32 iBuflen, mng_uint32p pRead ) -{ - return ((TQMNGFormat*)mng_get_userdata(handle))->readdata(pBuf,iBuflen,pRead); -} -static mng_bool errorproc( mng_handle handle, - mng_int32 iErrorcode, - mng_int8 iSeverity, - mng_chunkid iChunkname, - mng_uint32 iChunkseq, - mng_int32 iExtra1, - mng_int32 iExtra2, - mng_pchar zErrortext ) -{ - return ((TQMNGFormat*)mng_get_userdata(handle))->errorproc(iErrorcode, - iSeverity,iChunkname,iChunkseq,iExtra1,iExtra2,zErrortext); -} -static mng_bool processheader( mng_handle handle, - mng_uint32 iWidth, mng_uint32 iHeight ) -{ - return ((TQMNGFormat*)mng_get_userdata(handle))->processheader(iWidth,iHeight); -} -static mng_ptr getcanvasline( mng_handle handle, mng_uint32 iLinenr ) -{ - return ((TQMNGFormat*)mng_get_userdata(handle))->getcanvasline(iLinenr); -} -static mng_bool refresh( mng_handle handle, - mng_uint32 iTop, - mng_uint32 iLeft, - mng_uint32 iBottom, - mng_uint32 iRight ) -{ - return ((TQMNGFormat*)mng_get_userdata(handle))->refresh(iTop,iLeft,iBottom,iRight); -} -static mng_uint32 gettickcount( mng_handle handle ) -{ - return ((TQMNGFormat*)mng_get_userdata(handle))->gettickcount(); -} -static mng_bool settimer( mng_handle handle, mng_uint32 iMsecs ) -{ - return ((TQMNGFormat*)mng_get_userdata(handle))->settimer(iMsecs); -} - -static mng_ptr memalloc( mng_size_t iLen ) -{ - return calloc(1,iLen); -} -static void memfree( mng_ptr iPtr, mng_size_t /*iLen*/ ) -{ - free(iPtr); -} - -/*! - This function decodes some data into image changes. - - Returns the number of bytes consumed. -*/ -int TQMNGFormat::decode( TQImage& img, TQImageConsumer* cons, - const uchar* buf, int length ) -{ - consumer = cons; - image = &img; - - data = buf; - ndata = length; - ubuffer = 0; - - if ( state == MovieStart ) { - handle = mng_initialize( (mng_ptr)this, ::memalloc, ::memfree, 0 ); - mng_set_suspensionmode( handle, MNG_TRUE ); - mng_setcb_openstream( handle, ::openstream ); - mng_setcb_closestream( handle, ::closestream ); - mng_setcb_readdata( handle, ::readdata ); - mng_setcb_errorproc( handle, ::errorproc ); - mng_setcb_processheader( handle, ::processheader ); - mng_setcb_getcanvasline( handle, ::getcanvasline ); - mng_setcb_refresh( handle, ::refresh ); - mng_setcb_gettickcount( handle, ::gettickcount ); - mng_setcb_settimer( handle, ::settimer ); - state = Data; - mng_readdisplay(handle); - losingtimer.start(); - } - - losttime += losingtimer.elapsed(); - if ( ndata || !length ) - mng_display_resume(handle); - losingtimer.start(); - - image = 0; - - nbuffer -= ubuffer; - if ( nbuffer ) { - // Move back unused tail - memcpy(buffer,buffer+ubuffer,nbuffer); - } - if ( ndata ) { - // Not all used. - enlargeBuffer(nbuffer+ndata); - memcpy(buffer+nbuffer,data,ndata); - nbuffer += ndata; - } - - return length; -} - -static TQMNGFormatType* globalMngFormatTypeObject = 0; - -#endif // TQT_NO_ASYNC_IMAGE_IO - -#ifndef TQT_NO_ASYNC_IMAGE_IO -void qCleanupMngIO() -{ - if ( globalMngFormatTypeObject ) { - delete globalMngFormatTypeObject; - globalMngFormatTypeObject = 0; - } -} -#endif - -void qInitMngIO() -{ - static bool done = FALSE; - if ( !done ) { - done = TRUE; -#ifndef TQT_NO_ASYNC_IMAGE_IO - globalMngFormatTypeObject = new TQMNGFormatType; - qAddPostRoutine( qCleanupMngIO ); -#endif - } -} - -#endif // TQT_NO_IMAGEIO_MNG |