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65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
/*
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* SVQ1 decoder
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* ported to MPlayer by Arpi <arpi@thot.banki.hu>
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* ported to libavcodec by Nick Kurshev <nickols_k@mail.ru>
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*
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* Copyright (C) 2002 the xine project
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* Copyright (C) 2002 the ffmpeg project
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*
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* SVQ1 Encoder (c) 2004 Mike Melanson <melanson@pcisys.net>
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*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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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* Sorenson Vector Quantizer #1 (SVQ1) video codec.
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* For more information of the SVQ1 algorithm, visit:
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* http://www.pcisys.net/~melanson/codecs/
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*/
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#ifndef AVCODEC_SVQ1_H
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#define AVCODEC_SVQ1_H
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#include <stdint.h>
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#define SVQ1_BLOCK_SKIP 0
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#define SVQ1_BLOCK_INTER 1
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#define SVQ1_BLOCK_INTER_4V 2
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#define SVQ1_BLOCK_INTRA 3
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struct svq1_frame_size {
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uint16_t width;
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uint16_t height;
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};
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uint16_t ff_svq1_packet_checksum (const uint8_t *data, const int length,
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int value);
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extern const int8_t* const ff_svq1_inter_codebooks[6];
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extern const int8_t* const ff_svq1_intra_codebooks[6];
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extern const uint8_t ff_svq1_block_type_vlc[4][2];
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extern const uint8_t ff_svq1_intra_multistage_vlc[6][8][2];
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extern const uint8_t ff_svq1_inter_multistage_vlc[6][8][2];
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extern const uint16_t ff_svq1_intra_mean_vlc[256][2];
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extern const uint16_t ff_svq1_inter_mean_vlc[512][2];
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extern const struct svq1_frame_size ff_svq1_frame_size_table[7];
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#endif /* AVCODEC_SVQ1_H */
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