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FFmpeg/libavcodec/wmv2.h
Andreas Rheinhardt cee40a945a avcodec/mpegvideo_motion: Constify ff_mpv_motion
Also constify the corresponding code in mpegvideo.c that handles
lowres.
(Unfortunately, not everything that is const could be constified:
ref_picture could be made const uint8_t* const* if C allowed the
safe automatic conversion from uint8_t**; and pix_op, qpix_op
could be made to point to const function pointers, but C's handling
of const in pointers to arrays is broken.)

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-08-05 03:04:05 +02:00

58 lines
1.6 KiB
C

/*
* Copyright (c) 2002 The FFmpeg Project
*
* 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_WMV2_H
#define AVCODEC_WMV2_H
#include "mpegvideo.h"
#include "wmv2dsp.h"
#define SKIP_TYPE_NONE 0
#define SKIP_TYPE_MPEG 1
#define SKIP_TYPE_ROW 2
#define SKIP_TYPE_COL 3
typedef struct WMV2Context {
WMV2DSPContext wdsp;
int hshift;
} WMV2Context;
void ff_wmv2_common_init(MpegEncContext *s);
void ff_mspel_motion(MpegEncContext *s,
uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
uint8_t *const *ref_picture, op_pixels_func (*pix_op)[4],
int motion_x, int motion_y, int h);
static av_always_inline int wmv2_get_cbp_table_index(MpegEncContext *s, int cbp_index)
{
static const uint8_t map[3][3] = {
{ 0, 2, 1 },
{ 1, 0, 2 },
{ 2, 1, 0 },
};
return map[(s->qscale > 10) + (s->qscale > 20)][cbp_index];
}
#endif /* AVCODEC_WMV2_H */