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Diffstat (limited to 'contrib/ffmpeg/libavcodec/vc1.h')
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1 files changed, 312 insertions, 0 deletions
diff --git a/contrib/ffmpeg/libavcodec/vc1.h b/contrib/ffmpeg/libavcodec/vc1.h new file mode 100644 index 000000000..12f38160b --- /dev/null +++ b/contrib/ffmpeg/libavcodec/vc1.h @@ -0,0 +1,312 @@ +/* + * VC-1 and WMV3 decoder + * Copyright (c) 2006-2007 Konstantin Shishkov + * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer + * + * 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 FFMPEG_VC1_H +#define FFMPEG_VC1_H + +#include "avcodec.h" +#include "mpegvideo.h" +#include "intrax8.h" + +/** Markers used in VC-1 AP frame data */ +//@{ +enum VC1Code{ + VC1_CODE_RES0 = 0x00000100, + VC1_CODE_ENDOFSEQ = 0x0000010A, + VC1_CODE_SLICE, + VC1_CODE_FIELD, + VC1_CODE_FRAME, + VC1_CODE_ENTRYPOINT, + VC1_CODE_SEQHDR, +}; +//@} + +#define IS_MARKER(x) (((x) & ~0xFF) == VC1_CODE_RES0) + +/** Available Profiles */ +//@{ +enum Profile { + PROFILE_SIMPLE, + PROFILE_MAIN, + PROFILE_COMPLEX, ///< TODO: WMV9 specific + PROFILE_ADVANCED +}; +//@} + +/** Sequence quantizer mode */ +//@{ +enum QuantMode { + QUANT_FRAME_IMPLICIT, ///< Implicitly specified at frame level + QUANT_FRAME_EXPLICIT, ///< Explicitly specified at frame level + QUANT_NON_UNIFORM, ///< Non-uniform quant used for all frames + QUANT_UNIFORM ///< Uniform quant used for all frames +}; +//@} + +/** Where quant can be changed */ +//@{ +enum DQProfile { + DQPROFILE_FOUR_EDGES, + DQPROFILE_DOUBLE_EDGES, + DQPROFILE_SINGLE_EDGE, + DQPROFILE_ALL_MBS +}; +//@} + +/** @name Where quant can be changed + */ +//@{ +enum DQSingleEdge { + DQSINGLE_BEDGE_LEFT, + DQSINGLE_BEDGE_TOP, + DQSINGLE_BEDGE_RIGHT, + DQSINGLE_BEDGE_BOTTOM +}; +//@} + +/** Which pair of edges is quantized with ALTPQUANT */ +//@{ +enum DQDoubleEdge { + DQDOUBLE_BEDGE_TOPLEFT, + DQDOUBLE_BEDGE_TOPRIGHT, + DQDOUBLE_BEDGE_BOTTOMRIGHT, + DQDOUBLE_BEDGE_BOTTOMLEFT +}; +//@} + +/** MV modes for P frames */ +//@{ +enum MVModes { + MV_PMODE_1MV_HPEL_BILIN, + MV_PMODE_1MV, + MV_PMODE_1MV_HPEL, + MV_PMODE_MIXED_MV, + MV_PMODE_INTENSITY_COMP +}; +//@} + +/** @name MV types for B frames */ +//@{ +enum BMVTypes { + BMV_TYPE_BACKWARD, + BMV_TYPE_FORWARD, + BMV_TYPE_INTERPOLATED +}; +//@} + +/** @name Block types for P/B frames */ +//@{ +enum TransformTypes { + TT_8X8, + TT_8X4_BOTTOM, + TT_8X4_TOP, + TT_8X4, //Both halves + TT_4X8_RIGHT, + TT_4X8_LEFT, + TT_4X8, //Both halves + TT_4X4 +}; +//@} + +/** One more frame type */ +#define BI_TYPE 7 + +enum CodingSet { + CS_HIGH_MOT_INTRA = 0, + CS_HIGH_MOT_INTER, + CS_LOW_MOT_INTRA, + CS_LOW_MOT_INTER, + CS_MID_RATE_INTRA, + CS_MID_RATE_INTER, + CS_HIGH_RATE_INTRA, + CS_HIGH_RATE_INTER +}; + +/** @name Overlap conditions for Advanced Profile */ +//@{ +enum COTypes { + CONDOVER_NONE = 0, + CONDOVER_ALL, + CONDOVER_SELECT +}; +//@} + + +/** The VC1 Context + * @todo Change size wherever another size is more efficient + * Many members are only used for Advanced Profile + */ +typedef struct VC1Context{ + MpegEncContext s; + IntraX8Context x8; + + int bits; + + /** Simple/Main Profile sequence header */ + //@{ + int res_sm; ///< reserved, 2b + int res_x8; ///< reserved + int multires; ///< frame-level RESPIC syntax element present + int res_fasttx; ///< reserved, always 1 + int res_transtab; ///< reserved, always 0 + int rangered; ///< RANGEREDFRM (range reduction) syntax element present + ///< at frame level + int res_rtm_flag; ///< reserved, set to 1 + int reserved; ///< reserved + //@} + + /** Advanced Profile */ + //@{ + int level; ///< 3bits, for Advanced/Simple Profile, provided by TS layer + int chromaformat; ///< 2bits, 2=4:2:0, only defined + int postprocflag; ///< Per-frame processing suggestion flag present + int broadcast; ///< TFF/RFF present + int interlace; ///< Progressive/interlaced (RPTFTM syntax element) + int tfcntrflag; ///< TFCNTR present + int panscanflag; ///< NUMPANSCANWIN, TOPLEFT{X,Y}, BOTRIGHT{X,Y} present + int extended_dmv; ///< Additional extended dmv range at P/B frame-level + int color_prim; ///< 8bits, chroma coordinates of the color primaries + int transfer_char; ///< 8bits, Opto-electronic transfer characteristics + int matrix_coef; ///< 8bits, Color primaries->YCbCr transform matrix + int hrd_param_flag; ///< Presence of Hypothetical Reference + ///< Decoder parameters + int psf; ///< Progressive Segmented Frame + //@} + + /** Sequence header data for all Profiles + * TODO: choose between ints, uint8_ts and monobit flags + */ + //@{ + int profile; ///< 2bits, Profile + int frmrtq_postproc; ///< 3bits, + int bitrtq_postproc; ///< 5bits, quantized framerate-based postprocessing strength + int fastuvmc; ///< Rounding of qpel vector to hpel ? (not in Simple) + int extended_mv; ///< Ext MV in P/B (not in Simple) + int dquant; ///< How qscale varies with MBs, 2bits (not in Simple) + int vstransform; ///< variable-size [48]x[48] transform type + info + int overlap; ///< overlapped transforms in use + int quantizer_mode; ///< 2bits, quantizer mode used for sequence, see QUANT_* + int finterpflag; ///< INTERPFRM present + //@} + + /** Frame decoding info for all profiles */ + //@{ + uint8_t mv_mode; ///< MV coding monde + uint8_t mv_mode2; ///< Secondary MV coding mode (B frames) + int k_x; ///< Number of bits for MVs (depends on MV range) + int k_y; ///< Number of bits for MVs (depends on MV range) + int range_x, range_y; ///< MV range + uint8_t pq, altpq; ///< Current/alternate frame quantizer scale + const uint8_t* zz_8x4;///< Zigzag scan table for TT_8x4 coding mode + const uint8_t* zz_4x8;///< Zigzag scan table for TT_4x8 coding mode + /** pquant parameters */ + //@{ + uint8_t dquantfrm; + uint8_t dqprofile; + uint8_t dqsbedge; + uint8_t dqbilevel; + //@} + /** AC coding set indexes + * @see 8.1.1.10, p(1)10 + */ + //@{ + int c_ac_table_index; ///< Chroma index from ACFRM element + int y_ac_table_index; ///< Luma index from AC2FRM element + //@} + int ttfrm; ///< Transform type info present at frame level + uint8_t ttmbf; ///< Transform type flag + uint8_t ttblk4x4; ///< Value of ttblk which indicates a 4x4 transform + int codingset; ///< index of current table set from 11.8 to use for luma block decoding + int codingset2; ///< index of current table set from 11.8 to use for chroma block decoding + int pqindex; ///< raw pqindex used in coding set selection + int a_avail, c_avail; + uint8_t *mb_type_base, *mb_type[3]; + + + /** Luma compensation parameters */ + //@{ + uint8_t lumscale; + uint8_t lumshift; + //@} + int16_t bfraction; ///< Relative position % anchors=> how to scale MVs + uint8_t halfpq; ///< Uniform quant over image and qp+.5 + uint8_t respic; ///< Frame-level flag for resized images + int buffer_fullness; ///< HRD info + /** 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] + */ + uint8_t mvrange; + uint8_t pquantizer; ///< Uniform (over sequence) quantizer in use + VLC *cbpcy_vlc; ///< CBPCY VLC table + int tt_index; ///< Index for Transform Type tables + uint8_t* mv_type_mb_plane; ///< bitplane for mv_type == (4MV) + uint8_t* direct_mb_plane; ///< bitplane for "direct" MBs + int mv_type_is_raw; ///< mv type mb plane is not coded + int dmb_is_raw; ///< direct mb plane is raw + int skip_is_raw; ///< skip mb plane is not coded + uint8_t luty[256], lutuv[256]; // lookup tables used for intensity compensation + int use_ic; ///< use intensity compensation in B-frames + int rnd; ///< rounding control + + /** Frame decoding info for S/M profiles only */ + //@{ + uint8_t rangeredfrm; ///< out_sample = CLIP((in_sample-128)*2+128) + uint8_t interpfrm; + //@} + + /** Frame decoding info for Advanced profile */ + //@{ + uint8_t fcm; ///< 0->Progressive, 2->Frame-Interlace, 3->Field-Interlace + uint8_t numpanscanwin; + uint8_t tfcntr; + uint8_t rptfrm, tff, rff; + uint16_t topleftx; + uint16_t toplefty; + uint16_t bottomrightx; + uint16_t bottomrighty; + uint8_t uvsamp; + uint8_t postproc; + int hrd_num_leaky_buckets; + uint8_t bit_rate_exponent; + uint8_t buffer_size_exponent; + uint8_t* acpred_plane; ///< AC prediction flags bitplane + int acpred_is_raw; + uint8_t* over_flags_plane; ///< Overflags bitplane + int overflg_is_raw; + uint8_t condover; + uint16_t *hrd_rate, *hrd_buffer; + uint8_t *hrd_fullness; + uint8_t range_mapy_flag; + uint8_t range_mapuv_flag; + uint8_t range_mapy; + uint8_t range_mapuv; + //@} + + int p_frame_skipped; + int bi_type; + int x8_type; +} VC1Context; + +#endif /* FFMPEG_VC1_H */ |