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