149 lines
3.9 KiB
C++
149 lines
3.9 KiB
C++
/*
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* (c) Copyright Ascensio System SIA 2010-2023
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*
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* This program is a free software product. You can redistribute it and/or
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* modify it under the terms of the GNU Affero General Public License (AGPL)
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* version 3 as published by the Free Software Foundation. In accordance with
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* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
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* that Ascensio System SIA expressly excludes the warranty of non-infringement
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* of any third-party rights.
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*
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* This program is distributed WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
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* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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*
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* You can contact Ascensio System SIA at 20A-6 Ernesta Birznieka-Upish
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* street, Riga, Latvia, EU, LV-1050.
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*
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* The interactive user interfaces in modified source and object code versions
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* of the Program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU AGPL version 3.
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*
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* Pursuant to Section 7(b) of the License you must retain the original Product
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* logo when distributing the program. Pursuant to Section 7(e) we decline to
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* grant you any rights under trademark law for use of our trademarks.
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*
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* All the Product's GUI elements, including illustrations and icon sets, as
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* well as technical writing content are licensed under the terms of the
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* Creative Commons Attribution-ShareAlike 4.0 International. See the License
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* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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*
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*/
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#include "./JPXStream2.h"
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#include "./MemoryUtils.h"
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#include "../../DesktopEditor/raster/BgraFrame.h"
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#ifdef USE_GRAPHICS_JPEG2000
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#include "../../DesktopEditor/raster/Jp2/J2kFile.h"
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#else
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#include "../../DesktopEditor/raster/Jp2/openjpeg/opj_bgraframe.h"
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#endif
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using namespace PdfReader;
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JPXStream2::JPXStream2(Stream *pStream) :
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FilterStream(pStream)
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{
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m_lCurPos = 0;
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m_lBufferSize = 0;
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m_pSourceBuffer = NULL;
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}
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JPXStream2::~JPXStream2()
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{
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close();
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delete str;
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}
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void JPXStream2::reset()
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{
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str->reset();
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// Инизиализация
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m_lCurPos = 0;
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m_lBufferSize = 0;
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unsigned int nAllocSize = 4096;
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unsigned int nStreamSize = 0;
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unsigned char* pBuffer = (unsigned char*)MemUtilsMalloc(nAllocSize);
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int nCurrentChar;
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while (true)
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{
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nCurrentChar = str->getChar();
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if (EOF == nCurrentChar)
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break;
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if (nStreamSize == nAllocSize)
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{
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nAllocSize *= 2;
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pBuffer = (unsigned char*)MemUtilsRealloc(pBuffer, nAllocSize, nStreamSize);
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}
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pBuffer[nStreamSize++] = nCurrentChar;
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}
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BYTE* pBufferPointer;
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int nHeight = 0;
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int nWidth = 0;
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int nComponentsCount = 0;
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if (!openjpeg::GetData(pBuffer, nStreamSize, pBufferPointer, nComponentsCount, nWidth, nHeight, true))
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{
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MemUtilsFree(pBuffer);
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return;
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}
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MemUtilsFree(pBuffer);
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m_pSourceBuffer = pBufferPointer;
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m_lBufferSize = nComponentsCount * nWidth * nHeight;
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}
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Stream* JPXStream2::copy()
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{
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return new JPXStream2(str->copy());
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}
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void JPXStream2::close()
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{
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if (m_pSourceBuffer)
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openjpeg::DestroyData(m_pSourceBuffer);
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}
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int JPXStream2::getChar()
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{
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int nChar = 0;
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if (m_lCurPos < m_lBufferSize)
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nChar = m_pSourceBuffer[m_lCurPos++];
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else
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return EOF;
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return nChar;
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}
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int JPXStream2::lookChar()
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{
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if (m_lBufferSize > 0 && m_lCurPos < m_lBufferSize)
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return m_pSourceBuffer[m_lCurPos];
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return EOF;
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}
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GString* JPXStream2::getPSFilter(int psLevel, const char *indent, GBool okToReadStream)
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{
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return NULL;
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}
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GBool JPXStream2::isBinary(GBool bLast)
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{
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return str->isBinary(gTrue);
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}
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void JPXStream2::reduceResolution(int reductionA) {}
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StreamKind JPXStream2::getKind() { return strJPX; }
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void JPXStream2::getImageParams(int *pBitsPerComponent, StreamColorSpaceMode *peModeCS)
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{
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*pBitsPerComponent = 8;
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*peModeCS = streamCSDeviceRGB;
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}
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