86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
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/*
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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 "avcodec.h"
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#include "intrax8.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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MpegEncContext s;
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IntraX8Context x8;
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WMV2DSPContext wdsp;
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int j_type_bit;
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int j_type;
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int abt_flag;
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int abt_type;
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int abt_type_table[6];
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int per_mb_abt;
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int per_block_abt;
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int mspel_bit;
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int cbp_table_index;
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int top_left_mv_flag;
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int per_mb_rl_bit;
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int skip_type;
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int hshift;
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ScanTable abt_scantable[2];
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DECLARE_ALIGNED(32, int16_t, abt_block2)[6][64];
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} Wmv2Context;
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void ff_wmv2_common_init(Wmv2Context *w);
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int ff_wmv2_decode_mb(MpegEncContext *s, int16_t block[6][64]);
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int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
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void ff_wmv2_encode_mb(MpegEncContext * s, int16_t block[6][64],
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int motion_x, int motion_y);
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int ff_wmv2_decode_picture_header(MpegEncContext * s);
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int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
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void ff_wmv2_add_mb(MpegEncContext *s, int16_t block[6][64],
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uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
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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 **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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