mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-18 03:19:31 +02:00
cee40a945a
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>
58 lines
1.6 KiB
C
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 */
|