FFmpeg
wmv2.h
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1 /*
2  * Copyright (c) 2002 The FFmpeg Project
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifndef AVCODEC_WMV2_H
22 #define AVCODEC_WMV2_H
23 
24 #include "avcodec.h"
25 #include "intrax8.h"
26 #include "mpegvideo.h"
27 #include "wmv2dsp.h"
28 
29 #define SKIP_TYPE_NONE 0
30 #define SKIP_TYPE_MPEG 1
31 #define SKIP_TYPE_ROW 2
32 #define SKIP_TYPE_COL 3
33 
34 
35 typedef struct Wmv2Context {
40  int j_type;
41  int abt_flag;
42  int abt_type;
46  int mspel_bit;
50  int skip_type;
51  int hshift;
52 
54  DECLARE_ALIGNED(32, int16_t, abt_block2)[6][64];
55 } Wmv2Context;
56 
58 
59 int ff_wmv2_decode_mb(MpegEncContext *s, int16_t block[6][64]);
60 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
61 void ff_wmv2_encode_mb(MpegEncContext * s, int16_t block[6][64],
62  int motion_x, int motion_y);
65 void ff_wmv2_add_mb(MpegEncContext *s, int16_t block[6][64],
66  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
67 
69  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
70  uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
71  int motion_x, int motion_y, int h);
72 
73 
75 {
76  static const uint8_t map[3][3] = {
77  { 0, 2, 1 },
78  { 1, 0, 2 },
79  { 2, 1, 0 },
80  };
81 
82  return map[(s->qscale > 10) + (s->qscale > 20)][cbp_index];
83 }
84 
85 #endif /* AVCODEC_WMV2_H */
int j_type_bit
Definition: wmv2.h:39
static av_always_inline int wmv2_get_cbp_table_index(MpegEncContext *s, int cbp_index)
Definition: wmv2.h:74
int16_t abt_block2[6][64]
Definition: wmv2.h:54
int per_mb_abt
Definition: wmv2.h:44
Scantable.
Definition: idctdsp.h:31
int abt_type_table[6]
Definition: wmv2.h:43
mpegvideo header.
int per_mb_rl_bit
Definition: wmv2.h:49
int qscale
QP.
Definition: mpegvideo.h:204
The exact code depends on how similar the blocks are and how related they are to the block
uint8_t
void ff_wmv2_common_init(Wmv2Context *w)
Definition: wmv2.c:31
#define DECLARE_ALIGNED(n, t, v)
Declare a variable that is aligned in memory.
Definition: mem.h:112
int ff_wmv2_encode_picture_header(MpegEncContext *s, int picture_number)
Definition: wmv2enc.c:74
MpegEncContext s
Definition: wmv2.h:36
void ff_wmv2_add_mb(MpegEncContext *s, int16_t block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr)
Definition: wmv2.c:83
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)
Definition: wmv2.c:100
void ff_wmv2_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
Definition: wmv2enc.c:147
uint8_t w
Definition: llviddspenc.c:38
ScanTable abt_scantable[2]
Definition: wmv2.h:53
int abt_type
Definition: wmv2.h:42
int ff_wmv2_decode_secondary_picture_header(MpegEncContext *s)
Definition: wmv2dec.c:171
int abt_flag
Definition: wmv2.h:41
Libavcodec external API header.
int cbp_table_index
Definition: wmv2.h:47
void(* op_pixels_func)(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h)
Definition: hpeldsp.h:38
int skip_type
Definition: wmv2.h:50
const VDPAUPixFmtMap * map
MpegEncContext.
Definition: mpegvideo.h:81
WMV2DSPContext wdsp
Definition: wmv2.h:38
int ff_wmv2_decode_picture_header(MpegEncContext *s)
Definition: wmv2dec.c:136
int per_block_abt
Definition: wmv2.h:45
int hshift
Definition: wmv2.h:51
IntraX8Context x8
Definition: wmv2.h:37
int mspel_bit
Definition: wmv2.h:46
#define av_always_inline
Definition: attributes.h:39
int ff_wmv2_decode_mb(MpegEncContext *s, int16_t block[6][64])
Definition: wmv2dec.c:384
int top_left_mv_flag
Definition: wmv2.h:48
int j_type
Definition: wmv2.h:40