/indra/llimage/llimagejpeg.h
https://bitbucket.org/lindenlab/viewer-beta/ · C++ Header · 86 lines · 44 code · 16 blank · 26 comment · 0 complexity · 3339227099f727c2947bf47e3b0a23d0 MD5 · raw file
- /**
- * @file llimagejpeg.h
- * @brief This class compresses and decompresses JPEG files
- *
- * $LicenseInfo:firstyear=2002&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
- * $/LicenseInfo$
- */
- #ifndef LL_LLIMAGEJPEG_H
- #define LL_LLIMAGEJPEG_H
- #include <csetjmp>
- #include "llimage.h"
- extern "C" {
- #ifdef LL_STANDALONE
- # include <jpeglib.h>
- # include <jerror.h>
- #else
- # include "jpeglib/jpeglib.h"
- # include "jpeglib/jerror.h"
- #endif
- }
- class LLImageJPEG : public LLImageFormatted
- {
- protected:
- virtual ~LLImageJPEG();
-
- public:
- LLImageJPEG(S32 quality = 75);
- /*virtual*/ std::string getExtension() { return std::string("jpg"); }
- /*virtual*/ BOOL updateData();
- /*virtual*/ BOOL decode(LLImageRaw* raw_image, F32 decode_time);
- /*virtual*/ BOOL encode(const LLImageRaw* raw_image, F32 encode_time);
- void setEncodeQuality( S32 q ) { mEncodeQuality = q; } // on a scale from 1 to 100
- S32 getEncodeQuality() { return mEncodeQuality; }
- // Callbacks registered with jpeglib
- static void encodeInitDestination ( j_compress_ptr cinfo );
- static boolean encodeEmptyOutputBuffer(j_compress_ptr cinfo);
- static void encodeTermDestination(j_compress_ptr cinfo);
- static void decodeInitSource(j_decompress_ptr cinfo);
- static boolean decodeFillInputBuffer(j_decompress_ptr cinfo);
- static void decodeSkipInputData(j_decompress_ptr cinfo, long num_bytes);
- static void decodeTermSource(j_decompress_ptr cinfo);
- static void errorExit(j_common_ptr cinfo);
- static void errorEmitMessage(j_common_ptr cinfo, int msg_level);
- static void errorOutputMessage(j_common_ptr cinfo);
- static BOOL decompress(LLImageJPEG* imagep);
- protected:
- U8* mOutputBuffer; // temp buffer used during encoding
- S32 mOutputBufferSize; // bytes in mOuputBuffer
- S32 mEncodeQuality; // on a scale from 1 to 100
- private:
- static jmp_buf sSetjmpBuffer; // To allow the library to abort.
- };
- #endif // LL_LLIMAGEJPEG_H