aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* 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 "avcodec.h"
#include "intrax8.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 {
MpegEncContext s;
IntraX8Context x8;
WMV2DSPContext wdsp;
int j_type_bit;
int j_type;
int abt_flag;
int abt_type;
int abt_type_table[6];
int per_mb_abt;
int per_block_abt;
int mspel_bit;
int cbp_table_index;
int top_left_mv_flag;
int per_mb_rl_bit;
int skip_type;
int hshift;
ScanTable abt_scantable[2];
DECLARE_ALIGNED(32, int16_t, abt_block2)[6][64];
} Wmv2Context;
void ff_wmv2_common_init(Wmv2Context *w);
int ff_wmv2_decode_mb(MpegEncContext *s, int16_t block[6][64]);
int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
void ff_wmv2_encode_mb(MpegEncContext * s, int16_t block[6][64],
int motion_x, int motion_y);
int ff_wmv2_decode_picture_header(MpegEncContext * s);
int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
void ff_wmv2_add_mb(MpegEncContext *s, int16_t block[6][64],
uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
void ff_mspel_motion(MpegEncContext *s,
uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
uint8_t **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 */
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