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65 lines
1.5 KiB
65 lines
1.5 KiB
/* |
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* Canopus HQX decoder |
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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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#ifndef AVCODEC_HQX_H |
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#define AVCODEC_HQX_H |
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#include <stdint.h> |
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#include "libavutil/mem.h" |
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#include "get_bits.h" |
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enum HQXACMode { |
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HQX_AC_Q0 = 0, |
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HQX_AC_Q8, |
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HQX_AC_Q16, |
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HQX_AC_Q32, |
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HQX_AC_Q64, |
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HQX_AC_Q128, |
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NUM_HQX_AC |
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}; |
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typedef struct HQXLUT { |
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int16_t lev; |
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uint8_t run; |
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int8_t bits; |
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} HQXLUT; |
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typedef struct HQXAC { |
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int lut_bits, extra_bits; |
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const HQXLUT *lut; |
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} HQXAC; |
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typedef struct HQXContext { |
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int format, dcb, width, height; |
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int interlaced; |
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DECLARE_ALIGNED(16, int16_t, block)[16][64]; |
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VLC cbp_vlc; |
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VLC dc_vlc[3]; |
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} HQXContext; |
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#define HQX_DC_VLC_BITS 9 |
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extern const HQXAC ff_hqx_ac[NUM_HQX_AC]; |
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int ff_hqx_init_vlcs(HQXContext *ctx); |
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#endif /* AVCODEC_HQX_H */
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