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libavcodec
h261.h
Go to the documentation of this file.
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/*
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* H261 decoder
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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* Copyright (c) 2004 Maarten Daniels
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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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/**
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* @file
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* h261codec.
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*/
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#ifndef AVCODEC_H261_H
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#define AVCODEC_H261_H
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#include "
mpegvideo.h
"
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#include "
rl.h
"
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/**
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* H261Context
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*/
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typedef
struct
H261Context
{
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MpegEncContext
s
;
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int
current_mba
;
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int
mba_diff
;
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int
mtype
;
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int
current_mv_x
;
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int
current_mv_y
;
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int
gob_number
;
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int
gob_start_code_skipped
;
// 1 if gob start code is already read before gob header is read
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}
H261Context
;
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#define MB_TYPE_H261_FIL 0x800000
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extern
uint8_t
ff_h261_rl_table_store
[2][2 *
MAX_RUN
+
MAX_LEVEL
+ 3];
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extern
const
uint8_t
ff_h261_mba_code
[35];
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extern
const
uint8_t
ff_h261_mba_bits
[35];
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extern
const
uint8_t
ff_h261_mtype_code
[10];
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extern
const
uint8_t
ff_h261_mtype_bits
[10];
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extern
const
int
ff_h261_mtype_map
[10];
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extern
const
uint8_t
ff_h261_mv_tab
[17][2];
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extern
const
uint8_t
ff_h261_cbp_tab
[63][2];
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extern
RLTable
ff_h261_rl_tcoeff
;
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void
ff_h261_loop_filter
(
MpegEncContext
*
s
);
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void
ff_h261_common_init
(
void
);
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int
ff_h261_get_picture_format
(
int
width
,
int
height
);
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void
ff_h261_reorder_mb_index
(
MpegEncContext
*
s
);
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void
ff_h261_encode_mb
(
MpegEncContext
*
s
, int16_t
block
[6][64],
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int
motion_x,
int
motion_y);
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void
ff_h261_encode_picture_header
(
MpegEncContext
*
s
,
int
picture_number);
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void
ff_h261_encode_init
(
MpegEncContext
*
s
);
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#endif
/* AVCODEC_H261_H */
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