mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
36b5f71b1f
For all VLCs here, the number of bits of the VLC is write-only, because it is hardcoded at the call site. Therefore one can replace these VLC structures with the only thing that is actually used: The pointer to the VLCElem table. And in some cases one can even avoid this. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
42 lines
1.5 KiB
C
42 lines
1.5 KiB
C
/*
|
|
* MSMPEG4 decoder header
|
|
* copyright (c) 2007 Aurelien Jacobs <aurel@gnuage.org>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVCODEC_MSMPEG4DEC_H
|
|
#define AVCODEC_MSMPEG4DEC_H
|
|
|
|
#include "avcodec.h"
|
|
#include "mpegvideo.h"
|
|
|
|
#define INTER_INTRA_VLC_BITS 3
|
|
#define MB_NON_INTRA_VLC_BITS 9
|
|
|
|
extern const VLCElem *ff_mb_non_intra_vlc[4];
|
|
extern VLCElem ff_inter_intra_vlc[8];
|
|
|
|
int ff_msmpeg4_decode_init(AVCodecContext *avctx);
|
|
int ff_msmpeg4_decode_picture_header(MpegEncContext *s);
|
|
int ff_msmpeg4_decode_ext_header(MpegEncContext *s, int buf_size);
|
|
void ff_msmpeg4_decode_motion(MpegEncContext * s, int *mx_ptr, int *my_ptr);
|
|
int ff_msmpeg4_decode_block(MpegEncContext * s, int16_t * block,
|
|
int n, int coded, const uint8_t *scan_table);
|
|
|
|
#endif
|