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 "libavutil/mem_internal.h"
25 
26 #include "avcodec.h"
27 #include "intrax8.h"
28 #include "mpegvideo.h"
29 #include "wmv2dsp.h"
30 
31 #define SKIP_TYPE_NONE 0
32 #define SKIP_TYPE_MPEG 1
33 #define SKIP_TYPE_ROW 2
34 #define SKIP_TYPE_COL 3
35 
36 
37 typedef struct Wmv2Context {
42  int j_type;
43  int abt_flag;
44  int abt_type;
48  int mspel_bit;
52  int skip_type;
53  int hshift;
54 
56  DECLARE_ALIGNED(32, int16_t, abt_block2)[6][64];
57 } Wmv2Context;
58 
60 
61 int ff_wmv2_decode_mb(MpegEncContext *s, int16_t block[6][64]);
62 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
63 void ff_wmv2_encode_mb(MpegEncContext * s, int16_t block[6][64],
64  int motion_x, int motion_y);
67 void ff_wmv2_add_mb(MpegEncContext *s, int16_t block[6][64],
68  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
69 
71  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
72  uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
73  int motion_x, int motion_y, int h);
74 
75 
77 {
78  static const uint8_t map[3][3] = {
79  { 0, 2, 1 },
80  { 1, 0, 2 },
81  { 2, 1, 0 },
82  };
83 
84  return map[(s->qscale > 10) + (s->qscale > 20)][cbp_index];
85 }
86 
87 #endif /* AVCODEC_WMV2_H */
int j_type_bit
Definition: wmv2.h:41
static av_always_inline int wmv2_get_cbp_table_index(MpegEncContext *s, int cbp_index)
Definition: wmv2.h:76
int16_t abt_block2[6][64]
Definition: wmv2.h:56
int per_mb_abt
Definition: wmv2.h:46
Scantable.
Definition: idctdsp.h:31
int abt_type_table[6]
Definition: wmv2.h:45
mpegvideo header.
int per_mb_rl_bit
Definition: wmv2.h:51
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:117
int ff_wmv2_encode_picture_header(MpegEncContext *s, int picture_number)
Definition: wmv2enc.c:74
MpegEncContext s
Definition: wmv2.h:38
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:39
ScanTable abt_scantable[2]
Definition: wmv2.h:55
int abt_type
Definition: wmv2.h:44
int ff_wmv2_decode_secondary_picture_header(MpegEncContext *s)
Definition: wmv2dec.c:171
int abt_flag
Definition: wmv2.h:43
Libavcodec external API header.
int cbp_table_index
Definition: wmv2.h:49
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:52
const VDPAUPixFmtMap * map
MpegEncContext.
Definition: mpegvideo.h:81
WMV2DSPContext wdsp
Definition: wmv2.h:40
int ff_wmv2_decode_picture_header(MpegEncContext *s)
Definition: wmv2dec.c:136
int per_block_abt
Definition: wmv2.h:47
int hshift
Definition: wmv2.h:53
IntraX8Context x8
Definition: wmv2.h:39
int mspel_bit
Definition: wmv2.h:48
#define av_always_inline
Definition: attributes.h:45
int ff_wmv2_decode_mb(MpegEncContext *s, int16_t block[6][64])
Definition: wmv2dec.c:378
int top_left_mv_flag
Definition: wmv2.h:50
int j_type
Definition: wmv2.h:42