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60 lines
2.2 KiB
60 lines
2.2 KiB
/* |
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* MJPEG encoder and decoder |
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* Copyright (c) 2000, 2001 Fabrice Bellard |
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* Copyright (c) 2003 Alex Beregszaszi |
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* Copyright (c) 2003-2004 Michael Niedermayer |
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* |
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* Support for external huffman table, various fixes (AVID workaround), |
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* aspecting, new decode_frame mechanism and apple mjpeg-b support |
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* by Alex Beregszaszi |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/** |
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* @file |
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* MJPEG encoder and decoder. |
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*/ |
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#include "jpegtabs.h" |
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#if 0 |
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/* These are the sample quantization tables given in JPEG spec section K.1. |
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* The spec says that the values given produce "good" quality, and |
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* when divided by 2, "very good" quality. |
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*/ |
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static const unsigned char std_luminance_quant_tbl[64] = { |
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16, 11, 10, 16, 24, 40, 51, 61, |
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12, 12, 14, 19, 26, 58, 60, 55, |
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14, 13, 16, 24, 40, 57, 69, 56, |
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14, 17, 22, 29, 51, 87, 80, 62, |
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18, 22, 37, 56, 68, 109, 103, 77, |
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24, 35, 55, 64, 81, 104, 113, 92, |
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49, 64, 78, 87, 103, 121, 120, 101, |
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72, 92, 95, 98, 112, 100, 103, 99 |
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}; |
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static const unsigned char std_chrominance_quant_tbl[64] = { |
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17, 18, 24, 47, 99, 99, 99, 99, |
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18, 21, 26, 66, 99, 99, 99, 99, |
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24, 26, 56, 99, 99, 99, 99, 99, |
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47, 66, 99, 99, 99, 99, 99, 99, |
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99, 99, 99, 99, 99, 99, 99, 99, |
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99, 99, 99, 99, 99, 99, 99, 99, |
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99, 99, 99, 99, 99, 99, 99, 99, |
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99, 99, 99, 99, 99, 99, 99, 99 |
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}; |
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#endif
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