| /* |
| * 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 AVCODEC_VC1_H |
| #define AVCODEC_VC1_H |
| |
| #include "avcodec.h" |
| #include "h264chroma.h" |
| #include "mpegvideo.h" |
| #include "intrax8.h" |
| #include "vc1_common.h" |
| #include "vc1dsp.h" |
| |
| #define AC_VLC_BITS 9 |
| |
| /** 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 |
| }; |
| //@} |
| |
| /** MBMODE for interlaced frame P-picture */ |
| //@{ |
| enum MBModesIntfr { |
| MV_PMODE_INTFR_1MV, |
| MV_PMODE_INTFR_2MV_FIELD, |
| MV_PMODE_INTFR_2MV, |
| MV_PMODE_INTFR_4MV_FIELD, |
| MV_PMODE_INTFR_4MV, |
| MV_PMODE_INTFR_INTRA, |
| }; |
| //@} |
| |
| /** @name MV types for B frames */ |
| //@{ |
| enum BMVTypes { |
| BMV_TYPE_BACKWARD, |
| BMV_TYPE_FORWARD, |
| BMV_TYPE_INTERPOLATED, |
| BMV_TYPE_DIRECT |
| }; |
| //@} |
| |
| /** @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 |
| }; |
| //@} |
| |
| 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 |
| }; |
| //@} |
| |
| /** |
| * FCM Frame Coding Mode |
| * @note some content might be marked interlaced |
| * but have fcm set to 0 as well (e.g. HD-DVD) |
| */ |
| enum FrameCodingMode { |
| PROGRESSIVE = 0, ///< in the bitstream is reported as 00b |
| ILACE_FRAME, ///< in the bitstream is reported as 10b |
| ILACE_FIELD ///< in the bitstream is reported as 11b |
| }; |
| |
| /** |
| * Imode types |
| * @{ |
| */ |
| enum Imode { |
| IMODE_RAW, |
| IMODE_NORM2, |
| IMODE_DIFF2, |
| IMODE_NORM6, |
| IMODE_DIFF6, |
| IMODE_ROWSKIP, |
| IMODE_COLSKIP |
| }; |
| /** @} */ //imode defines |
| |
| /** 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; |
| H264ChromaContext h264chroma; |
| VC1DSPContext vc1dsp; |
| |
| int bits; |
| |
| /** Simple/Main Profile sequence header */ |
| //@{ |
| int res_sprite; ///< reserved, sprite mode |
| int res_y411; ///< reserved, old interlaced mode |
| 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 refdist_flag; ///< REFDIST syntax element present in II, IP, PI or PP field picture headers |
| 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 max_coded_width, max_coded_height; |
| 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 |
| uint8_t zz_8x8[4][64]; ///< Zigzag table for TT_8x8, permuted for IDCT |
| int left_blk_sh, top_blk_sh; ///< Either 3 or 0, positions of l/t in blk[] |
| 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 |
| int *ttblk_base, *ttblk; ///< Transform type at the block level |
| 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; ///< Extended MV range flag |
| uint8_t pquantizer; ///< Uniform (over sequence) quantizer in use |
| VLC *cbpcy_vlc; ///< CBPCY VLC table |
| int tt_index; ///< Index for Transform Type tables (to decode TTMB) |
| uint8_t* mv_type_mb_plane; ///< bitplane for mv_type == (4MV) |
| uint8_t* direct_mb_plane; ///< bitplane for "direct" MBs |
| uint8_t* forward_mb_plane; ///< bitplane for "forward" MBs |
| int mv_type_is_raw; ///< mv type mb plane is not coded |
| int dmb_is_raw; ///< direct mb plane is raw |
| int fmb_is_raw; ///< forward mb plane is raw |
| int skip_is_raw; ///< skip mb plane is not coded |
| uint8_t last_luty[2][256], last_lutuv[2][256]; ///< lookup tables used for intensity compensation |
| uint8_t aux_luty[2][256], aux_lutuv[2][256]; ///< lookup tables used for intensity compensation |
| uint8_t next_luty[2][256], next_lutuv[2][256]; ///< lookup tables used for intensity compensation |
| uint8_t (*curr_luty)[256] ,(*curr_lutuv)[256]; |
| int last_use_ic, *curr_use_ic, next_use_ic, aux_use_ic; |
| 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 */ |
| //@{ |
| enum FrameCodingMode fcm; |
| 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; |
| //@} |
| |
| /** Frame decoding info for interlaced picture */ |
| uint8_t dmvrange; ///< Extended differential MV range flag |
| int fourmvswitch; |
| int intcomp; |
| uint8_t lumscale2; ///< for interlaced field P picture |
| uint8_t lumshift2; |
| VLC* mbmode_vlc; |
| VLC* imv_vlc; |
| VLC* twomvbp_vlc; |
| VLC* fourmvbp_vlc; |
| uint8_t twomvbp; |
| uint8_t fourmvbp; |
| uint8_t* fieldtx_plane; |
| int fieldtx_is_raw; |
| uint8_t zzi_8x8[64]; |
| uint8_t *blk_mv_type_base, *blk_mv_type; ///< 0: frame MV, 1: field MV (interlaced frame) |
| uint8_t *mv_f_base, *mv_f[2]; ///< 0: MV obtained from same field, 1: opposite field |
| uint8_t *mv_f_next_base, *mv_f_next[2]; |
| int field_mode; ///< 1 for interlaced field pictures |
| int fptype; |
| int second_field; |
| int refdist; ///< distance of the current picture from reference |
| int numref; ///< number of past field pictures used as reference |
| // 0 corresponds to 1 and 1 corresponds to 2 references |
| int reffield; ///< if numref = 0 (1 reference) then reffield decides which |
| // field to use among the two fields from previous frame |
| int intcompfield; ///< which of the two fields to be intensity compensated |
| // 0: both fields, 1: bottom field, 2: top field |
| int cur_field_type; ///< 0: top, 1: bottom |
| int ref_field_type[2]; ///< forward and backward reference field type (top or bottom) |
| int blocks_off, mb_off; |
| int qs_last; ///< if qpel has been used in the previous (tr.) picture |
| int bmvtype; |
| int frfd, brfd; ///< reference frame distance (forward or backward) |
| int first_pic_header_flag; |
| int pic_header_flag; |
| |
| /** Frame decoding info for sprite modes */ |
| //@{ |
| int new_sprite; |
| int two_sprites; |
| AVFrame *sprite_output_frame; |
| int output_width, output_height, sprite_width, sprite_height; |
| uint8_t* sr_rows[2][2]; ///< Sprite resizer line cache |
| //@} |
| |
| int p_frame_skipped; |
| int bi_type; |
| int x8_type; |
| |
| int16_t (*block)[6][64]; |
| int n_allocated_blks, cur_blk_idx, left_blk_idx, topleft_blk_idx, top_blk_idx; |
| uint32_t *cbp_base, *cbp; |
| uint8_t *is_intra_base, *is_intra; |
| int16_t (*luma_mv_base)[2], (*luma_mv)[2]; |
| uint8_t bfraction_lut_index; ///< Index for BFRACTION value (see Table 40, reproduced into ff_vc1_bfraction_lut[]) |
| uint8_t broken_link; ///< Broken link flag (BROKEN_LINK syntax element) |
| uint8_t closed_entry; ///< Closed entry point flag (CLOSED_ENTRY syntax element) |
| |
| int end_mb_x; ///< Horizontal macroblock limit (used only by mss2) |
| |
| int parse_only; ///< Context is used within parser |
| int resync_marker; ///< could this stream contain resync markers |
| } VC1Context; |
| |
| /** |
| * Decode Simple/Main Profiles sequence header |
| * @see Figure 7-8, p16-17 |
| * @param avctx Codec context |
| * @param gb GetBit context initialized from Codec context extra_data |
| * @return Status |
| */ |
| int ff_vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb); |
| |
| int ff_vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb); |
| |
| int ff_vc1_parse_frame_header (VC1Context *v, GetBitContext *gb); |
| int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext *gb); |
| int ff_vc1_init_common(VC1Context *v); |
| |
| int ff_vc1_decode_init_alloc_tables(VC1Context *v); |
| void ff_vc1_init_transposed_scantables(VC1Context *v); |
| int ff_vc1_decode_end(AVCodecContext *avctx); |
| void ff_vc1_decode_blocks(VC1Context *v); |
| |
| void ff_vc1_loop_filter_iblk(VC1Context *v, int pq); |
| void ff_vc1_loop_filter_iblk_delayed(VC1Context *v, int pq); |
| void ff_vc1_smooth_overlap_filter_iblk(VC1Context *v); |
| void ff_vc1_apply_p_loop_filter(VC1Context *v); |
| |
| void ff_vc1_mc_1mv(VC1Context *v, int dir); |
| void ff_vc1_mc_4mv_luma(VC1Context *v, int n, int dir, int avg); |
| void ff_vc1_mc_4mv_chroma(VC1Context *v, int dir); |
| void ff_vc1_mc_4mv_chroma4(VC1Context *v, int dir, int dir2, int avg); |
| |
| void ff_vc1_interp_mc(VC1Context *v); |
| |
| #endif /* AVCODEC_VC1_H */ |
