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https://gitee.com/openharmony/third_party_ffmpeg
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64 lines
2.3 KiB
C
64 lines
2.3 KiB
C
/*
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* MJPEG encoder
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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 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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* MJPEG encoder.
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*/
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#ifndef AVCODEC_MJPEGENC_H
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#define AVCODEC_MJPEGENC_H
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#include <stdint.h>
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#include "mpegvideo.h"
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typedef struct MJpegContext {
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uint8_t huff_size_dc_luminance[12]; //FIXME use array [3] instead of lumi / chrom, for easier addressing
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uint16_t huff_code_dc_luminance[12];
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uint8_t huff_size_dc_chrominance[12];
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uint16_t huff_code_dc_chrominance[12];
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uint8_t huff_size_ac_luminance[256];
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uint16_t huff_code_ac_luminance[256];
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uint8_t huff_size_ac_chrominance[256];
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uint16_t huff_code_ac_chrominance[256];
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} MJpegContext;
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int ff_mjpeg_encode_init(MpegEncContext *s);
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void ff_mjpeg_encode_close(MpegEncContext *s);
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void ff_mjpeg_encode_picture_header(AVCodecContext *avctx, PutBitContext *pb,
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ScanTable *intra_scantable,
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uint16_t intra_matrix[64]);
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void ff_mjpeg_encode_picture_trailer(PutBitContext *pb, int header_bits);
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void ff_mjpeg_encode_stuffing(PutBitContext *pbc);
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void ff_mjpeg_encode_dc(PutBitContext *pb, int val,
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uint8_t *huff_size, uint16_t *huff_code);
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void ff_mjpeg_encode_mb(MpegEncContext *s, int16_t block[6][64]);
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#endif /* AVCODEC_MJPEGENC_H */
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