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rv34.h
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1 /*
2  * RV30/40 decoder common data declarations
3  * Copyright (c) 2007 Mike Melanson, Konstantin Shishkov
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * RV30 and RV40 decoder common data declarations
25  */
26 
27 #ifndef AVCODEC_RV34_H
28 #define AVCODEC_RV34_H
29 
30 #include "avcodec.h"
31 #include "mpegvideo.h"
32 
33 #include "h264pred.h"
34 #include "rv34dsp.h"
35 
36 #define MB_TYPE_SEPARATE_DC 0x01000000
37 #define IS_SEPARATE_DC(a) ((a) & MB_TYPE_SEPARATE_DC)
38 
39 /**
40  * RV30 and RV40 Macroblock types
41  */
43  RV34_MB_TYPE_INTRA, ///< Intra macroblock
44  RV34_MB_TYPE_INTRA16x16, ///< Intra macroblock with DCs in a separate 4x4 block
45  RV34_MB_P_16x16, ///< P-frame macroblock, one motion frame
46  RV34_MB_P_8x8, ///< P-frame macroblock, 8x8 motion compensation partitions
47  RV34_MB_B_FORWARD, ///< B-frame macroblock, forward prediction
48  RV34_MB_B_BACKWARD, ///< B-frame macroblock, backward prediction
49  RV34_MB_SKIP, ///< Skipped block
50  RV34_MB_B_DIRECT, ///< Bidirectionally predicted B-frame macroblock, no motion vectors
51  RV34_MB_P_16x8, ///< P-frame macroblock, 16x8 motion compensation partitions
52  RV34_MB_P_8x16, ///< P-frame macroblock, 8x16 motion compensation partitions
53  RV34_MB_B_BIDIR, ///< Bidirectionally predicted B-frame macroblock, two motion vectors
54  RV34_MB_P_MIX16x16, ///< P-frame macroblock with DCs in a separate 4x4 block, one motion vector
56 };
57 
58 /**
59  * VLC tables used by the decoder
60  *
61  * Intra frame VLC sets do not contain some of those tables.
62  */
63 typedef struct RV34VLC{
64  VLC cbppattern[2]; ///< VLCs used for pattern of coded block patterns decoding
65  VLC cbp[2][4]; ///< VLCs used for coded block patterns decoding
66  VLC first_pattern[4]; ///< VLCs used for decoding coefficients in the first subblock
67  VLC second_pattern[2]; ///< VLCs used for decoding coefficients in the subblocks 2 and 3
68  VLC third_pattern[2]; ///< VLCs used for decoding coefficients in the last subblock
69  VLC coefficient; ///< VLCs used for decoding big coefficients
70 }RV34VLC;
71 
72 /** essential slice information */
73 typedef struct SliceInfo{
74  int type; ///< slice type (intra, inter)
75  int quant; ///< quantizer used for this slice
76  int vlc_set; ///< VLCs used for this slice
77  int start, end; ///< start and end macroblocks of the slice
78  int width; ///< coded width
79  int height; ///< coded height
80  int pts; ///< frame timestamp
81 }SliceInfo;
82 
83 /** decoder context */
84 typedef struct RV34DecContext{
87  int8_t *intra_types_hist;///< old block types, used for prediction
88  int8_t *intra_types; ///< block types
89  int intra_types_stride;///< block types array stride
90  const uint8_t *luma_dc_quant_i;///< luma subblock DC quantizer for intraframes
91  const uint8_t *luma_dc_quant_p;///< luma subblock DC quantizer for interframes
92 
93  RV34VLC *cur_vlcs; ///< VLC set used for current frame decoding
94  H264PredContext h; ///< functions for 4x4 and 16x16 intra block prediction
95  SliceInfo si; ///< current slice information
96 
97  int *mb_type; ///< internal macroblock types
98  int block_type; ///< current block type
99  int luma_vlc; ///< which VLC set will be used for decoding of luma blocks
100  int chroma_vlc; ///< which VLC set will be used for decoding of chroma blocks
101  int is16; ///< current block has additional 16x16 specific features or not
102  int dmv[4][2]; ///< differential motion vectors for the current macroblock
103 
104  int rv30; ///< indicates which RV variant is currently decoded
105  int max_rpr;
106 
109  int weight1, weight2; ///< B-frame distance fractions (0.14) used in motion compensation
111 
113 
114  uint16_t *cbp_luma; ///< CBP values for luma subblocks
115  uint8_t *cbp_chroma; ///< CBP values for chroma subblocks
116  uint16_t *deblock_coefs; ///< deblock coefficients for each macroblock
117 
118  /** 8x8 block available flags (for MV prediction) */
119  DECLARE_ALIGNED(8, uint32_t, avail_cache)[3*4];
120 
121  /** temporary blocks for RV4 weighted MC */
125 
127  int (*decode_mb_info)(struct RV34DecContext *r);
128  int (*decode_intra_types)(struct RV34DecContext *r, GetBitContext *gb, int8_t *dst);
129  void (*loop_filter)(struct RV34DecContext *r, int row);
131 
132 /**
133  * common decoding functions
134  */
135 int ff_rv34_get_start_offset(GetBitContext *gb, int blocks);
137 int ff_rv34_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt);
141 
142 #endif /* AVCODEC_RV34_H */
P-frame macroblock with DCs in a separate 4x4 block, one motion vector.
Definition: rv34.h:54
int orig_width
Definition: rv34.h:112
int vlc_set
VLCs used for this slice.
Definition: rv34.h:76
VLC second_pattern[2]
VLCs used for decoding coefficients in the subblocks 2 and 3.
Definition: rv34.h:67
int last_pts
Definition: rv34.h:107
P-frame macroblock, 16x8 motion compensation partitions.
Definition: rv34.h:51
uint8_t * tmp_b_block_y[2]
temporary blocks for RV4 weighted MC
Definition: rv34.h:122
int(* decode_intra_types)(struct RV34DecContext *r, GetBitContext *gb, int8_t *dst)
Definition: rv34.h:128
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
void(* loop_filter)(struct RV34DecContext *r, int row)
Definition: rv34.h:129
uint32_t avail_cache[3 *4]
8x8 block available flags (for MV prediction)
Definition: rv34.h:119
B-frame macroblock, forward prediction.
Definition: rv34.h:47
int dmv[4][2]
differential motion vectors for the current macroblock
Definition: rv34.h:102
Bidirectionally predicted B-frame macroblock, two motion vectors.
Definition: rv34.h:53
MpegEncContext s
Definition: rv34.h:85
int height
coded height
Definition: rv34.h:79
Bidirectionally predicted B-frame macroblock, no motion vectors.
Definition: rv34.h:50
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:53
int ff_rv34_decode_init(AVCodecContext *avctx)
Initialize decoder.
Definition: rv34.c:1486
RV40BlockTypes
RV30 and RV40 Macroblock types.
Definition: rv34.h:42
mpegvideo header.
VLC cbppattern[2]
VLCs used for pattern of coded block patterns decoding.
Definition: rv34.h:64
int weight2
B-frame distance fractions (0.14) used in motion compensation.
Definition: rv34.h:109
int start
Definition: rv34.h:77
const uint8_t * luma_dc_quant_p
luma subblock DC quantizer for interframes
Definition: rv34.h:91
int ff_rv34_decode_init_thread_copy(AVCodecContext *avctx)
Definition: rv34.c:1528
uint8_t * tmp_b_block_base
Definition: rv34.h:124
int ff_rv34_decode_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: rv34.c:1556
uint8_t
int scaled_weight
Definition: rv34.h:108
uint16_t * cbp_luma
CBP values for luma subblocks.
Definition: rv34.h:114
int width
coded width
Definition: rv34.h:78
uint16_t * deblock_coefs
deblock coefficients for each macroblock
Definition: rv34.h:116
Context for storing H.264 prediction functions.
Definition: h264pred.h:92
int max_rpr
Definition: rv34.h:105
Skipped block.
Definition: rv34.h:49
P-frame macroblock, 8x16 motion compensation partitions.
Definition: rv34.h:52
int ff_rv34_decode_end(AVCodecContext *avctx)
Definition: rv34.c:1844
int quant
quantizer used for this slice
Definition: rv34.h:75
int(* parse_slice_header)(struct RV34DecContext *r, GetBitContext *gb, SliceInfo *si)
Definition: rv34.h:126
RV30/40 decoder motion compensation functions.
const char * r
Definition: vf_curves.c:111
int luma_vlc
which VLC set will be used for decoding of luma blocks
Definition: rv34.h:99
int ff_rv34_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: rv34.c:1634
VLC tables used by the decoder.
Definition: rv34.h:63
Definition: vlc.h:26
int end
start and end macroblocks of the slice
Definition: rv34.h:77
Intra macroblock with DCs in a separate 4x4 block.
Definition: rv34.h:44
int * mb_type
internal macroblock types
Definition: rv34.h:97
int orig_height
Definition: rv34.h:112
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
H264PredContext h
functions for 4x4 and 16x16 intra block prediction
Definition: rv34.h:94
VLC coefficient
VLCs used for decoding big coefficients.
Definition: rv34.h:69
VLC first_pattern[4]
VLCs used for decoding coefficients in the first subblock.
Definition: rv34.h:66
int mv_weight1
Definition: rv34.h:110
#define src
Definition: vp9dsp.c:530
essential slice information
Definition: rv34.h:73
Libavcodec external API header.
main external API structure.
Definition: avcodec.h:1657
RV34VLC * cur_vlcs
VLC set used for current frame decoding.
Definition: rv34.h:93
SliceInfo si
current slice information
Definition: rv34.h:95
P-frame macroblock, 8x8 motion compensation partitions.
Definition: rv34.h:46
VLC cbp[2][4]
VLCs used for coded block patterns decoding.
Definition: rv34.h:65
int intra_types_stride
block types array stride
Definition: rv34.h:89
int is16
current block has additional 16x16 specific features or not
Definition: rv34.h:101
H.264 / AVC / MPEG-4 prediction functions.
int8_t * intra_types
block types
Definition: rv34.h:88
P-frame macroblock, one motion frame.
Definition: rv34.h:45
int ff_rv34_get_start_offset(GetBitContext *gb, int blocks)
common decoding functions
Definition: rv34.c:330
int cur_pts
Definition: rv34.h:107
MpegEncContext.
Definition: mpegvideo.h:78
int weight1
Definition: rv34.h:109
int(* decode_mb_info)(struct RV34DecContext *r)
Definition: rv34.h:127
uint8_t * tmp_b_block_uv[4]
Definition: rv34.h:123
int mv_weight2
Definition: rv34.h:110
B-frame macroblock, backward prediction.
Definition: rv34.h:48
VLC third_pattern[2]
VLCs used for decoding coefficients in the last subblock.
Definition: rv34.h:68
decoder context
Definition: rv34.h:84
int block_type
current block type
Definition: rv34.h:98
int next_pts
Definition: rv34.h:107
const uint8_t * luma_dc_quant_i
luma subblock DC quantizer for intraframes
Definition: rv34.h:90
int8_t * intra_types_hist
old block types, used for prediction
Definition: rv34.h:87
int type
slice type (intra, inter)
Definition: rv34.h:74
int rv30
indicates which RV variant is currently decoded
Definition: rv34.h:104
This structure stores compressed data.
Definition: avcodec.h:1565
Intra macroblock.
Definition: rv34.h:43
int chroma_vlc
which VLC set will be used for decoding of chroma blocks
Definition: rv34.h:100
RV34DSPContext rdsp
Definition: rv34.h:86
int pts
frame timestamp
Definition: rv34.h:80
uint8_t * cbp_chroma
CBP values for chroma subblocks.
Definition: rv34.h:115