1 /* 2 * Copyright (C) 2016 Open Broadcast Systems Ltd. 3 * Author (C) 2016 Rostislav Pehlivanov <atomnuker@gmail.com> 4 * 5 * This file is part of FFmpeg. 6 * 7 * FFmpeg is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * FFmpeg is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with FFmpeg; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22 #ifndef AVCODEC_DIRACTAB_H 23 #define AVCODEC_DIRACTAB_H 24 25 #include <stdint.h> 26 27 /* Tables here are shared between the Dirac/VC-2 decoder and the VC-2 encoder */ 28 29 /* Default quantization tables for each wavelet transform */ 30 extern const uint8_t ff_dirac_default_qmat[7][4][4]; 31 32 /* Scaling factors needed for quantization/dequantization */ 33 extern const int32_t ff_dirac_qscale_tab[116]; 34 35 /* Scaling offsets needed for quantization/dequantization, for intra frames */ 36 extern const int32_t ff_dirac_qoffset_intra_tab[120]; 37 38 /* Scaling offsets needed for quantization/dequantization, for inter frames */ 39 extern const int ff_dirac_qoffset_inter_tab[122]; 40 41 #define DIRAC_MAX_QUANT_INDEX (FF_ARRAY_ELEMS(ff_dirac_qscale_tab)) 42 43 #endif /* AVCODEC_DIRACTAB_H */ 44