Libav
vc1.h
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1 /*
2  * VC-1 and WMV3 decoder
3  * Copyright (c) 2006-2007 Konstantin Shishkov
4  * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
5  *
6  * This file is part of Libav.
7  *
8  * Libav is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * Libav is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with Libav; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 #ifndef AVCODEC_VC1_H
24 #define AVCODEC_VC1_H
25 
26 #include "avcodec.h"
27 #include "h264chroma.h"
28 #include "mpegvideo.h"
29 #include "intrax8.h"
30 #include "vc1_common.h"
31 #include "vc1dsp.h"
32 
33 #define AC_VLC_BITS 9
34 
37 enum QuantMode {
42 };
44 
47 enum DQProfile {
52 };
54 
63 };
65 
73 };
75 
78 enum MVModes {
84 };
86 
96 };
98 
101 enum BMVTypes {
106 };
108 
115  TT_8X4, // both halves
118  TT_4X8, // both halves
120 };
122 
123 enum CodingSet {
132 };
133 
136 enum COTypes {
140 };
142 
152 };
153 
158 typedef struct VC1Context{
163 
164  int bits;
165 
169  int res_y411;
170  int res_x8;
171  int multires;
174  int rangered;
175  int res_rtm_flag;
177  int reserved;
178 
179 
182  int level;
185  int broadcast;
186  int interlace;
195  int psf;
197 
198 
203  int profile;
206  int fastuvmc;
208  int dquant;
210  int overlap;
213 
214 
219  int k_x;
220  int k_y;
223  uint8_t zz_8x8[4][64];
225  const uint8_t* zz_8x4;
226  const uint8_t* zz_4x8;
227 
234 
240 
241  int ttfrm;
243  int *ttblk_base, *ttblk;
244  int codingset;
246  int pqindex;
249 
250 
256  int16_t bfraction;
260 
269  int tt_index;
277  uint8_t last_luty[2][256], last_lutuv[2][256];
278  uint8_t aux_luty[2][256], aux_lutuv[2][256];
279  uint8_t next_luty[2][256], next_lutuv[2][256];
280  uint8_t (*curr_luty)[256] ,(*curr_lutuv)[256];
282  int rnd;
283 
289 
296  uint16_t topleftx;
297  uint16_t toplefty;
298  uint16_t bottomrightx;
299  uint16_t bottomrighty;
310  uint16_t *hrd_rate, *hrd_buffer;
317 
321  int intcomp;
332  int8_t zzi_8x8[64];
337  int fptype;
339  int refdist;
340  int numref;
341  // 0 corresponds to 1 and 1 corresponds to 2 references
342  int reffield;
343  // field to use among the two fields from previous frame
345  // 0: both fields, 1: bottom field, 2: top field
347  int ref_field_type[2];
349  int qs_last;
350  int bmvtype;
351  int frfd, brfd;
354 
361  uint8_t* sr_rows[2][2];
362 
363 
365  int bi_type;
366  int x8_type;
367 
368  int16_t (*block)[6][64];
370  uint32_t *cbp_base, *cbp;
372  int16_t (*luma_mv_base)[2], (*luma_mv)[2];
376 
377  int end_mb_x;
378 
381 } VC1Context;
382 
391 
393 
397 
402 
407 
408 void ff_vc1_mc_1mv(VC1Context *v, int dir);
409 void ff_vc1_mc_4mv_luma(VC1Context *v, int n, int dir, int avg);
410 void ff_vc1_mc_4mv_chroma(VC1Context *v, int dir);
411 void ff_vc1_mc_4mv_chroma4(VC1Context *v, int dir, int dir2, int avg);
412 
414 
415 #endif /* AVCODEC_VC1_H */
int color_prim
8 bits, chroma coordinates of the color primaries
Definition: vc1.h:191
in the bitstream is reported as 00b
Definition: vc1.h:149
int topleft_blk_idx
Definition: vc1.h:369
VC-1 and WMV3 decoder.
uint8_t bfraction_lut_index
Index for BFRACTION value (see Table 40, reproduced into ff_vc1_bfraction_lut[])
Definition: vc1.h:373
int p_frame_skipped
Definition: vc1.h:364
The VC1 Context.
Definition: vc1.h:158
This structure describes decoded (raw) audio or video data.
Definition: frame.h:140
uint8_t lumscale2
for interlaced field P picture
Definition: vc1.h:322
int k_x
Number of bits for MVs (depends on MV range)
Definition: vc1.h:219
int reffield
if numref = 0 (1 reference) then reffield decides which
Definition: vc1.h:342
uint8_t * mv_f_base
Definition: vc1.h:334
int mv_type_is_raw
mv type mb plane is not coded
Definition: vc1.h:273
Explicitly specified at frame level.
Definition: vc1.h:39
uint8_t dmvrange
Frame decoding info for interlaced picture.
Definition: vc1.h:319
int tt_index
Index for Transform Type tables (to decode TTMB)
Definition: vc1.h:269
int extended_mv
Ext MV in P/B (not in Simple)
Definition: vc1.h:207
CodingSet
Definition: vc1.h:123
int broadcast
TFF/RFF present.
Definition: vc1.h:185
int next_use_ic
Definition: vc1.h:281
int transfer_char
8 bits, Opto-electronic transfer characteristics
Definition: vc1.h:192
uint8_t rangeredfrm
Frame decoding info for S/M profiles only.
Definition: vc1.h:286
uint16_t bottomrighty
Definition: vc1.h:299
int frfd
Definition: vc1.h:351
uint8_t zz_8x8[4][64]
Zigzag table for TT_8x8, permuted for IDCT.
Definition: vc1.h:223
mpegvideo header.
int top_blk_idx
Definition: vc1.h:369
IntraX8Context x8
Definition: vc1.h:160
int intcompfield
which of the two fields to be intensity compensated
Definition: vc1.h:344
VLC * imv_vlc
Definition: vc1.h:325
uint8_t dqprofile
Definition: vc1.h:230
uint8_t * mb_type_base
Definition: vc1.h:248
uint8_t * mv_f[2]
0: MV obtained from same field, 1: opposite field
Definition: vc1.h:334
int sprite_height
Definition: vc1.h:360
MVModes
MV modes for P-frames.
Definition: vc1.h:78
int last_use_ic
Definition: vc1.h:281
int fastuvmc
Rounding of qpel vector to hpel ? (not in Simple)
Definition: vc1.h:206
int end_mb_x
Horizontal macroblock limit (used only by mss2)
Definition: vc1.h:377
int frmrtq_postproc
3 bits
Definition: vc1.h:204
uint8_t rff
Definition: vc1.h:295
uint8_t numpanscanwin
Definition: vc1.h:293
int hrd_param_flag
Presence of Hypothetical Reference Decoder parameters.
Definition: vc1.h:194
uint8_t lumshift2
Definition: vc1.h:323
int bits
Definition: vc1.h:164
int range_x
Definition: vc1.h:221
uint8_t dqsbedge
Definition: vc1.h:231
int refdist
distance of the current picture from reference
Definition: vc1.h:339
uint8_t * acpred_plane
AC prediction flags bitplane.
Definition: vc1.h:305
int res_transtab
reserved, always 0
Definition: vc1.h:173
int bi_type
Definition: vc1.h:365
int matrix_coef
8 bits, Color primaries->YCbCr transform matrix
Definition: vc1.h:193
uint8_t
int first_pic_header_flag
Definition: vc1.h:352
uint16_t * hrd_rate
Definition: vc1.h:310
TransformTypes
Definition: vc1.h:111
int panscanflag
NUMPANSCANWIN, TOPLEFT{X,Y}, BOTRIGHT{X,Y} present.
Definition: vc1.h:188
int left_blk_idx
Definition: vc1.h:369
int interlace
Progressive/interlaced (RPTFTM syntax element)
Definition: vc1.h:186
int y_ac_table_index
Luma index from AC2FRM element.
Definition: vc1.h:239
int second_field
Definition: vc1.h:338
int n_allocated_blks
Definition: vc1.h:369
int c_ac_table_index
AC coding set indexes.
Definition: vc1.h:238
int ttfrm
Transform type info present at frame level.
Definition: vc1.h:241
int codingset2
index of current table set from 11.8 to use for chroma block decoding
Definition: vc1.h:245
uint8_t aux_luty[2][256]
Definition: vc1.h:278
DQSingleEdge
Definition: vc1.h:58
int16_t bfraction
Relative position % anchors=> how to scale MVs.
Definition: vc1.h:256
uint16_t toplefty
Definition: vc1.h:297
int profile
Sequence header data for all Profiles TODO: choose between ints, uint8_ts and monobit flags...
Definition: vc1.h:203
int refdist_flag
REFDIST syntax element present in II, IP, PI or PP field picture headers.
Definition: vc1.h:189
uint8_t * forward_mb_plane
bitplane for "forward" MBs
Definition: vc1.h:272
uint8_t last_luty[2][256]
Definition: vc1.h:277
FrameCodingMode
FCM Frame Coding Mode.
Definition: vc1.h:148
int fieldtx_is_raw
Definition: vc1.h:331
Non-uniform quant used for all frames.
Definition: vc1.h:40
int ff_vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
Definition: vc1.c:522
uint8_t * over_flags_plane
Overflags bitplane.
Definition: vc1.h:307
uint8_t dqbilevel
Definition: vc1.h:232
uint8_t fourmvbp
Definition: vc1.h:329
int ff_vc1_decode_end(AVCodecContext *avctx)
Close a VC1/WMV3 decoder.
Definition: vc1dec.c:553
int range_y
MV range.
Definition: vc1.h:221
uint8_t last_lutuv[2][256]
lookup tables used for intensity compensation
Definition: vc1.h:277
int psf
Progressive Segmented Frame.
Definition: vc1.h:196
uint8_t ttmbf
Transform type flag.
Definition: vc1.h:242
Definition: vc1.h:119
int k_y
Number of bits for MVs (depends on MV range)
Definition: vc1.h:220
Implicitly specified at frame level.
Definition: vc1.h:38
uint8_t twomvbp
Definition: vc1.h:328
int dmb_is_raw
direct mb plane is raw
Definition: vc1.h:274
int16_t(* block)[6][64]
Definition: vc1.h:368
int res_y411
reserved, old interlaced mode
Definition: vc1.h:169
int overlap
overlapped transforms in use
Definition: vc1.h:210
in the bitstream is reported as 11b
Definition: vc1.h:151
int res_x8
reserved
Definition: vc1.h:170
void ff_vc1_smooth_overlap_filter_iblk(VC1Context *v)
uint8_t * hrd_fullness
Definition: vc1.h:311
int qs_last
if qpel has been used in the previous (tr.) picture
Definition: vc1.h:349
void ff_vc1_mc_4mv_chroma4(VC1Context *v, int dir, int dir2, int avg)
Do motion compensation for 4-MV interlaced frame chroma macroblock (both U and V) ...
Definition: vc1_mc.c:674
uint8_t * mv_f_next_base
Definition: vc1.h:335
VLC * mbmode_vlc
Definition: vc1.h:324
int ff_vc1_init_common(VC1Context *v)
Init VC-1 specific tables and VC1Context members.
Definition: vc1.c:1564
void ff_vc1_decode_blocks(VC1Context *v)
Definition: vc1_block.c:3020
int resync_marker
could this stream contain resync markers
Definition: vc1.h:380
void ff_vc1_mc_4mv_chroma(VC1Context *v, int dir)
Do motion compensation for 4-MV macroblock - both chroma blocks.
Definition: vc1_mc.c:502
uint8_t broken_link
Broken link flag (BROKEN_LINK syntax element)
Definition: vc1.h:374
const uint8_t * zz_8x4
Zigzag scan table for TT_8x4 coding mode.
Definition: vc1.h:225
int postprocflag
Per-frame processing suggestion flag present.
Definition: vc1.h:184
int res_rtm_flag
reserved, set to 1
Definition: vc1.h:176
Definition: vlc.h:26
int a_avail
Definition: vc1.h:247
uint8_t * blk_mv_type
0: frame MV, 1: field MV (interlaced frame)
Definition: vc1.h:333
int cur_field_type
0: top, 1: bottom
Definition: vc1.h:346
VLC * twomvbp_vlc
Definition: vc1.h:326
const uint8_t * zz_4x8
Zigzag scan table for TT_4x8 coding mode.
Definition: vc1.h:226
uint8_t buffer_size_exponent
Definition: vc1.h:304
int x8_type
Definition: vc1.h:366
uint8_t * blk_mv_type_base
Definition: vc1.h:333
int tfcntrflag
TFCNTR present.
Definition: vc1.h:187
int field_mode
1 for interlaced field pictures
Definition: vc1.h:336
COTypes
Definition: vc1.h:136
int8_t zzi_8x8[64]
Definition: vc1.h:332
uint8_t mv_mode
Frame decoding info for all profiles.
Definition: vc1.h:217
int fourmvswitch
Definition: vc1.h:320
int mb_off
Definition: vc1.h:348
void ff_vc1_loop_filter_iblk_delayed(VC1Context *v, int pq)
MBModesIntfr
MBMODE for interlaced frame P-picture.
Definition: vc1.h:89
int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:835
uint8_t lumscale
Luma compensation parameters.
Definition: vc1.h:253
uint8_t range_mapuv_flag
Definition: vc1.h:313
uint8_t closed_entry
Closed entry point flag (CLOSED_ENTRY syntax element)
Definition: vc1.h:375
DQProfile
Where quant can be changed.
Definition: vc1.h:47
int intcomp
Definition: vc1.h:321
uint32_t * cbp
Definition: vc1.h:370
int left_blk_sh
Definition: vc1.h:224
int16_t(* luma_mv_base)[2]
Definition: vc1.h:372
uint8_t * fieldtx_plane
Definition: vc1.h:330
int * ttblk_base
Definition: vc1.h:243
VLC * cbpcy_vlc
CBPCY VLC table.
Definition: vc1.h:268
uint8_t * sr_rows[2][2]
Sprite resizer line cache.
Definition: vc1.h:361
uint8_t aux_lutuv[2][256]
lookup tables used for intensity compensation
Definition: vc1.h:278
void ff_vc1_loop_filter_iblk(VC1Context *v, int pq)
int rangered
RANGEREDFRM (range reduction) syntax element present at frame level.
Definition: vc1.h:174
int finterpflag
INTERPFRM present.
Definition: vc1.h:212
int chromaformat
2 bits, 2=4:2:0, only defined
Definition: vc1.h:183
int res_sprite
Simple/Main Profile sequence header.
Definition: vc1.h:168
int top_blk_sh
Either 3 or 0, positions of l/t in blk[].
Definition: vc1.h:224
Libavcodec external API header.
void ff_vc1_mc_1mv(VC1Context *v, int dir)
Do motion compensation over 1 macroblock Mostly adapted hpel_motion and qpel_motion from mpegvideo...
Definition: vc1_mc.c:38
int c_avail
Definition: vc1.h:247
int multires
frame-level RESPIC syntax element present
Definition: vc1.h:171
uint32_t * cbp_base
Definition: vc1.h:370
main external API structure.
Definition: avcodec.h:1409
uint8_t * is_intra
Definition: vc1.h:371
uint8_t range_mapy
Definition: vc1.h:314
int curr_use_ic
Definition: vc1.h:281
int extended_dmv
Additional extended dmv range at P/B-frame-level.
Definition: vc1.h:190
int sprite_width
Definition: vc1.h:360
int fmb_is_raw
forward mb plane is raw
Definition: vc1.h:275
QuantMode
Sequence quantizer mode.
Definition: vc1.h:37
uint8_t * is_intra_base
Definition: vc1.h:371
int fptype
Definition: vc1.h:337
Definition: vc1.h:115
int buffer_fullness
HRD info.
Definition: vc1.h:259
int reserved
reserved
Definition: vc1.h:177
int aux_use_ic
Definition: vc1.h:281
uint8_t respic
Frame-level flag for resized images.
Definition: vc1.h:258
int skip_is_raw
skip mb plane is not coded
Definition: vc1.h:276
uint16_t bottomrightx
Definition: vc1.h:298
int quantizer_mode
2 bits, quantizer mode used for sequence, see QUANT_*
Definition: vc1.h:211
uint8_t next_lutuv[2][256]
lookup tables used for intensity compensation
Definition: vc1.h:279
int ref_field_type[2]
forward and backward reference field type (top or bottom)
Definition: vc1.h:347
uint8_t * direct_mb_plane
bitplane for "direct" MBs
Definition: vc1.h:271
uint8_t mvrange
Ranges:0 -> [-64n 63.f] x [-32, 31.f]1 -> [-128, 127.f] x [-64, 63.f]2 -> [-512, 511.f] x [-128, 127.f]3 -> [-1024, 1023.f] x [-256, 255.f].
Definition: vc1.h:266
uint8_t * mv_type_mb_plane
bitplane for mv_type == (4MV)
Definition: vc1.h:270
int vstransform
variable-size [48]x[48] transform type + info
Definition: vc1.h:209
void ff_vc1_apply_p_loop_filter(VC1Context *v)
int numref
number of past field pictures used as reference
Definition: vc1.h:340
int blocks_off
Definition: vc1.h:348
DQDoubleEdge
Which pair of edges is quantized with ALTPQUANT.
Definition: vc1.h:68
uint8_t range_mapuv
Definition: vc1.h:315
uint8_t tff
Definition: vc1.h:295
MpegEncContext s
Definition: vc1.h:159
in the bitstream is reported as 10b
Definition: vc1.h:150
MpegEncContext.
Definition: mpegvideo.h:76
void ff_vc1_init_transposed_scantables(VC1Context *v)
Definition: vc1dec.c:395
int cur_blk_idx
Definition: vc1.h:369
uint8_t pq
Definition: vc1.h:222
void ff_vc1_mc_4mv_luma(VC1Context *v, int n, int dir, int avg)
Do motion compensation for 4-MV macroblock - luminance block.
Definition: vc1_mc.c:258
int ff_vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
Decode Simple/Main Profiles sequence header.
Definition: vc1.c:290
int pqindex
raw pqindex used in coding set selection
Definition: vc1.h:246
int hrd_num_leaky_buckets
Definition: vc1.h:302
int output_width
Definition: vc1.h:360
enum FrameCodingMode fcm
Frame decoding info for Advanced profile.
Definition: vc1.h:292
Uniform quant used for all frames.
Definition: vc1.h:41
uint8_t dquantfrm
pquant parameters
Definition: vc1.h:229
uint8_t lumshift
Definition: vc1.h:254
uint8_t next_luty[2][256]
Definition: vc1.h:279
BMVTypes
Definition: vc1.h:101
int res_fasttx
reserved, always 1
Definition: vc1.h:172
int pic_header_flag
Definition: vc1.h:353
int * ttblk
Transform type at the block level.
Definition: vc1.h:243
uint8_t bit_rate_exponent
Definition: vc1.h:303
uint8_t postproc
Definition: vc1.h:301
uint8_t condover
Definition: vc1.h:309
uint8_t uvsamp
Definition: vc1.h:300
uint8_t pquantizer
Uniform (over sequence) quantizer in use.
Definition: vc1.h:267
int rnd
rounding control
Definition: vc1.h:282
Definition: vc1.h:118
AVFrame * sprite_output_frame
Definition: vc1.h:359
int acpred_is_raw
Definition: vc1.h:306
void ff_vc1_interp_mc(VC1Context *v)
Motion compensation for direct or interpolated blocks in B-frames.
Definition: vc1_mc.c:783
uint8_t rptfrm
Definition: vc1.h:295
uint8_t(* curr_luty)[256]
Definition: vc1.h:280
int bmvtype
Definition: vc1.h:350
int bitrtq_postproc
5 bits, quantized framerate-based postprocessing strength
Definition: vc1.h:205
int parse_only
Context is used within parser.
Definition: vc1.h:379
H264ChromaContext h264chroma
Definition: vc1.h:161
int overflg_is_raw
Definition: vc1.h:308
uint8_t interpfrm
Definition: vc1.h:287
Definition: vc1.h:112
int ff_vc1_decode_init_alloc_tables(VC1Context *v)
Definition: vc1dec.c:314
int level
Advanced Profile.
Definition: vc1.h:182
uint8_t range_mapy_flag
Definition: vc1.h:312
uint8_t tfcntr
Definition: vc1.h:294
int brfd
reference frame distance (forward or backward)
Definition: vc1.h:351
int dquant
How qscale varies with MBs, 2 bits (not in Simple)
Definition: vc1.h:208
uint8_t mv_mode2
Secondary MV coding mode (B-frames)
Definition: vc1.h:218
int new_sprite
Frame decoding info for sprite modes.
Definition: vc1.h:357
uint8_t * mv_f_next[2]
Definition: vc1.h:335
int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:620
int two_sprites
Definition: vc1.h:358
int codingset
index of current table set from 11.8 to use for luma block decoding
Definition: vc1.h:244
uint8_t * mb_type[3]
Definition: vc1.h:248
uint16_t * hrd_buffer
Definition: vc1.h:310
VLC * fourmvbp_vlc
Definition: vc1.h:327
uint8_t halfpq
Uniform quant over image and qp+.5.
Definition: vc1.h:257
VC1DSPContext vc1dsp
Definition: vc1.h:162
int output_height
Definition: vc1.h:360
uint16_t topleftx
Definition: vc1.h:296
uint8_t altpq
Current/alternate frame quantizer scale.
Definition: vc1.h:222