2022-01-24 20:54:45 +00:00
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/*
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* H.263 decoder internal header
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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_H263DEC_H
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#define AVCODEC_H263DEC_H
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#include "mpegvideo.h"
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#include "vlc.h"
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// The defines below define the number of bits that are read at once for
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// reading vlc values. Changing these may improve speed and data cache needs
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// be aware though that decreasing them may need the number of stages that is
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// passed to get_vlc* to be increased.
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#define H263_MV_VLC_BITS 9
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#define INTRA_MCBPC_VLC_BITS 6
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#define INTER_MCBPC_VLC_BITS 7
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#define CBPY_VLC_BITS 6
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#define TEX_VLC_BITS 9
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extern VLC ff_h263_intra_MCBPC_vlc;
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extern VLC ff_h263_inter_MCBPC_vlc;
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extern VLC ff_h263_cbpy_vlc;
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extern VLC ff_h263_mv_vlc;
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extern const enum AVPixelFormat ff_h263_hwaccel_pixfmt_list_420[];
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int ff_h263_decode_motion(MpegEncContext * s, int pred, int f_code);
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int ff_h263_decode_init(AVCodecContext *avctx);
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2022-03-30 19:33:24 +00:00
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int ff_h263_decode_frame(AVCodecContext *avctx, AVFrame *frame,
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int *got_frame, AVPacket *avpkt);
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2022-01-24 20:54:45 +00:00
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int ff_h263_decode_end(AVCodecContext *avctx);
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void ff_h263_decode_init_vlc(void);
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int ff_h263_decode_picture_header(MpegEncContext *s);
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int ff_h263_decode_gob_header(MpegEncContext *s);
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int ff_h263_decode_mba(MpegEncContext *s);
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/**
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* Print picture info if FF_DEBUG_PICT_INFO is set.
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*/
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void ff_h263_show_pict_info(MpegEncContext *s);
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int ff_intel_h263_decode_picture_header(MpegEncContext *s);
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int ff_h263_decode_mb(MpegEncContext *s,
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int16_t block[6][64]);
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int ff_h263_resync(MpegEncContext *s);
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#endif
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