/* * VP9 compatible video decoder * * Copyright (C) 2013 Ronald S. Bultje * Copyright (C) 2013 Clément Bœsch * * This file is part of Libav. * * Libav 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. * * Libav 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 Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef AVCODEC_VP9_H #define AVCODEC_VP9_H #include #include #include "libavutil/buffer.h" #include "libavutil/internal.h" #include "avcodec.h" #include "thread.h" #include "vp56.h" enum TxfmMode { TX_4X4, TX_8X8, TX_16X16, TX_32X32, N_TXFM_SIZES, TX_SWITCHABLE = N_TXFM_SIZES, N_TXFM_MODES }; enum TxfmType { DCT_DCT, DCT_ADST, ADST_DCT, ADST_ADST, N_TXFM_TYPES }; enum IntraPredMode { VERT_PRED, HOR_PRED, DC_PRED, DIAG_DOWN_LEFT_PRED, DIAG_DOWN_RIGHT_PRED, VERT_RIGHT_PRED, HOR_DOWN_PRED, VERT_LEFT_PRED, HOR_UP_PRED, TM_VP8_PRED, LEFT_DC_PRED, TOP_DC_PRED, DC_128_PRED, DC_127_PRED, DC_129_PRED, N_INTRA_PRED_MODES }; enum FilterMode { FILTER_8TAP_SMOOTH, FILTER_8TAP_REGULAR, FILTER_8TAP_SHARP, FILTER_BILINEAR, FILTER_SWITCHABLE, }; enum BlockPartition { PARTITION_NONE, // [ ] <-. PARTITION_H, // [-] | PARTITION_V, // [|] | PARTITION_SPLIT, // [+] --' }; enum InterPredMode { NEARESTMV = 10, NEARMV = 11, ZEROMV = 12, NEWMV = 13, }; enum MVJoint { MV_JOINT_ZERO, MV_JOINT_H, MV_JOINT_V, MV_JOINT_HV, }; typedef struct ProbContext { uint8_t y_mode[4][9]; uint8_t uv_mode[10][9]; uint8_t filter[4][2]; uint8_t mv_mode[7][3]; uint8_t intra[4]; uint8_t comp[5]; uint8_t single_ref[5][2]; uint8_t comp_ref[5]; uint8_t tx32p[2][3]; uint8_t tx16p[2][2]; uint8_t tx8p[2]; uint8_t skip[3]; uint8_t mv_joint[3]; struct { uint8_t sign; uint8_t classes[10]; uint8_t class0; uint8_t bits[10]; uint8_t class0_fp[2][3]; uint8_t fp[3]; uint8_t class0_hp; uint8_t hp; } mv_comp[2]; uint8_t partition[4][4][3]; } ProbContext; typedef void (*vp9_mc_func)(uint8_t *dst, ptrdiff_t dst_stride, const uint8_t *ref, ptrdiff_t ref_stride, int h, int mx, int my); typedef struct VP9DSPContext { /* * dimension 1: 0=4x4, 1=8x8, 2=16x16, 3=32x32 * dimension 2: intra prediction modes * * dst/left/top is aligned by transform-size (i.e. 4, 8, 16 or 32 pixels) * stride is aligned by 16 pixels * top[-1] is top/left; top[4,7] is top-right for 4x4 */ // FIXME(rbultje) maybe replace left/top pointers with HAVE_TOP/ // HAVE_LEFT/HAVE_TOPRIGHT flags instead, and then handle it in-place? // also needs to fit in with what H.264/VP8/etc do void (*intra_pred[N_TXFM_SIZES][N_INTRA_PRED_MODES])(uint8_t *dst, ptrdiff_t stride, const uint8_t *left, const uint8_t *top); /* * dimension 1: 0=4x4, 1=8x8, 2=16x16, 3=32x32, 4=lossless (3-4=dct only) * dimension 2: 0=dct/dct, 1=dct/adst, 2=adst/dct, 3=adst/adst * * dst is aligned by transform-size (i.e. 4, 8, 16 or 32 pixels) * stride is aligned by 16 pixels * block is 16-byte aligned * eob indicates the position (+1) of the last non-zero coefficient, * in scan-order. This can be used to write faster versions, e.g. a * dc-only 4x4/8x8/16x16/32x32, or a 4x4-only (eob<10) 8x8/16x16/32x32, * etc. */ // FIXME also write idct_add_block() versions for whole (inter) pred // blocks, so we can do 2 4x4s at once void (*itxfm_add[N_TXFM_SIZES + 1][N_TXFM_TYPES])(uint8_t *dst, ptrdiff_t stride, int16_t *block, int eob); /* * dimension 1: width of filter (0=4, 1=8, 2=16) * dimension 2: 0=col-edge filter (h), 1=row-edge filter (v) * * dst/stride are aligned by 8 */ void (*loop_filter_8[3][2])(uint8_t *dst, ptrdiff_t stride, int mb_lim, int lim, int hev_thr); /* * dimension 1: 0=col-edge filter (h), 1=row-edge filter (v) * * The width of filter is assumed to be 16; dst/stride are aligned by 16 */ void (*loop_filter_16[2])(uint8_t *dst, ptrdiff_t stride, int mb_lim, int lim, int hev_thr); /* * dimension 1/2: width of filter (0=4, 1=8) for each filter half * dimension 3: 0=col-edge filter (h), 1=row-edge filter (v) * * dst/stride are aligned by operation size * this basically calls loop_filter[d1][d3][0](), followed by * loop_filter[d2][d3][0]() on the next 8 pixels * mb_lim/lim/hev_thr contain two values in the lowest two bytes of the * integer. */ // FIXME perhaps a mix4 that operates on 32px (for AVX2) void (*loop_filter_mix2[2][2][2])(uint8_t *dst, ptrdiff_t stride, int mb_lim, int lim, int hev_thr); /* * dimension 1: hsize (0: 64, 1: 32, 2: 16, 3: 8, 4: 4) * dimension 2: filter type (0: smooth, 1: regular, 2: sharp, 3: bilin) * dimension 3: averaging type (0: put, 1: avg) * dimension 4: x subpel interpolation (0: none, 1: 8tap/bilin) * dimension 5: y subpel interpolation (1: none, 1: 8tap/bilin) * * dst/stride are aligned by hsize */ vp9_mc_func mc[5][4][2][2][2]; } VP9DSPContext; enum CompPredMode { PRED_SINGLEREF, PRED_COMPREF, PRED_SWITCHABLE, }; typedef struct VP9MVRefPair { VP56mv mv[2]; int8_t ref[2]; } VP9MVRefPair; typedef struct VP9Filter { uint8_t level[8 * 8]; uint8_t /* bit=col */ mask[2 /* 0=y, 1=uv */][2 /* 0=col, 1=row */] [8 /* rows */][4 /* 0=16, 1=8, 2=4, 3=inner4 */]; } VP9Filter; typedef struct VP9Frame { ThreadFrame tf; uint8_t *segmentation_map; VP9MVRefPair *mv; AVBufferRef *segmentation_map_buf; AVBufferRef *mv_buf; } VP9Frame; enum BlockLevel { BL_64X64, BL_32X32, BL_16X16, BL_8X8, }; enum BlockSize { BS_64x64, BS_64x32, BS_32x64, BS_32x32, BS_32x16, BS_16x32, BS_16x16, BS_16x8, BS_8x16, BS_8x8, BS_8x4, BS_4x8, BS_4x4, N_BS_SIZES, }; typedef struct VP9Block { uint8_t seg_id, intra, comp, ref[2], mode[4], uvmode, skip; enum FilterMode filter; VP56mv mv[4 /* b_idx */][2 /* ref */]; enum BlockSize bs; enum TxfmMode tx, uvtx; int row, row7, col, col7; uint8_t *dst[3]; ptrdiff_t y_stride, uv_stride; enum BlockLevel bl; enum BlockPartition bp; } VP9Block; typedef struct VP9Context { VP9DSPContext dsp; VideoDSPContext vdsp; GetBitContext gb; VP56RangeCoder c; VP56RangeCoder *c_b; unsigned c_b_size; VP9Block *b; VP9Block *b_base; int alloc_width; int alloc_height; int pass; int uses_2pass; int last_uses_2pass; int setup_finished; // bitstream header uint8_t profile; uint8_t keyframe, last_keyframe; uint8_t invisible; uint8_t use_last_frame_mvs; uint8_t errorres; uint8_t colorspace; uint8_t sub_x; uint8_t sub_y; uint8_t fullrange; uint8_t intraonly; uint8_t resetctx; uint8_t refreshrefmask; uint8_t highprecisionmvs; enum FilterMode filtermode; uint8_t allowcompinter; uint8_t fixcompref; uint8_t refreshctx; uint8_t parallelmode; uint8_t framectxid; uint8_t refidx[3]; uint8_t signbias[3]; uint8_t varcompref[2]; ThreadFrame refs[8]; #define CUR_FRAME 0 #define LAST_FRAME 1 VP9Frame frames[2]; struct { uint8_t level; int8_t sharpness; uint8_t lim_lut[64]; uint8_t mblim_lut[64]; } filter; struct { uint8_t enabled; int8_t mode[2]; int8_t ref[4]; } lf_delta; uint8_t yac_qi; int8_t ydc_qdelta, uvdc_qdelta, uvac_qdelta; uint8_t lossless; struct { uint8_t enabled; uint8_t temporal; uint8_t absolute_vals; uint8_t update_map; #define MAX_SEGMENT 8 struct { uint8_t q_enabled; uint8_t lf_enabled; uint8_t ref_enabled; uint8_t skip_enabled; uint8_t ref_val; int16_t q_val; int8_t lf_val; int16_t qmul[2][2]; uint8_t lflvl[4][2]; } feat[MAX_SEGMENT]; } segmentation; struct { unsigned log2_tile_cols, log2_tile_rows; unsigned tile_cols, tile_rows; unsigned tile_row_start, tile_row_end, tile_col_start, tile_col_end; } tiling; unsigned sb_cols, sb_rows, rows, cols; struct { ProbContext p; uint8_t coef[4][2][2][6][6][3]; } prob_ctx[4]; struct { ProbContext p; uint8_t coef[4][2][2][6][6][11]; uint8_t seg[7]; uint8_t segpred[3]; } prob; struct { unsigned y_mode[4][10]; unsigned uv_mode[10][10]; unsigned filter[4][3]; unsigned mv_mode[7][4]; unsigned intra[4][2]; unsigned comp[5][2]; unsigned single_ref[5][2][2]; unsigned comp_ref[5][2]; unsigned tx32p[2][4]; unsigned tx16p[2][3]; unsigned tx8p[2][2]; unsigned skip[3][2]; unsigned mv_joint[4]; struct { unsigned sign[2]; unsigned classes[11]; unsigned class0[2]; unsigned bits[10][2]; unsigned class0_fp[2][4]; unsigned fp[4]; unsigned class0_hp[2]; unsigned hp[2]; } mv_comp[2]; unsigned partition[4][4][4]; unsigned coef[4][2][2][6][6][3]; unsigned eob[4][2][2][6][6][2]; } counts; enum TxfmMode txfmmode; enum CompPredMode comppredmode; // contextual (left/above) cache uint8_t left_partition_ctx[8], *above_partition_ctx; uint8_t left_mode_ctx[16], *above_mode_ctx; // FIXME maybe merge some of the below in a flags field? uint8_t left_y_nnz_ctx[16], *above_y_nnz_ctx; uint8_t left_uv_nnz_ctx[2][8], *above_uv_nnz_ctx[2]; uint8_t left_skip_ctx[8], *above_skip_ctx; // 1bit uint8_t left_txfm_ctx[8], *above_txfm_ctx; // 2bit uint8_t left_segpred_ctx[8], *above_segpred_ctx; // 1bit uint8_t left_intra_ctx[8], *above_intra_ctx; // 1bit uint8_t left_comp_ctx[8], *above_comp_ctx; // 1bit uint8_t left_ref_ctx[8], *above_ref_ctx; // 2bit uint8_t left_filter_ctx[8], *above_filter_ctx; VP56mv left_mv_ctx[16][2], (*above_mv_ctx)[2]; // whole-frame cache uint8_t *intra_pred_data[3]; VP9Filter *lflvl; DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[71 * 80]; // block reconstruction intermediates int16_t *block_base, *block, *uvblock_base[2], *uvblock[2]; uint8_t *eob_base, *uveob_base[2], *eob, *uveob[2]; struct { int x, y; } min_mv, max_mv; DECLARE_ALIGNED(32, uint8_t, tmp_y)[64 * 64]; DECLARE_ALIGNED(32, uint8_t, tmp_uv)[2][32 * 32]; } VP9Context; void ff_vp9dsp_init(VP9DSPContext *dsp); void ff_vp9dsp_init_x86(VP9DSPContext *dsp); void ff_vp9_fill_mv(VP9Context *s, VP56mv *mv, int mode, int sb); void ff_vp9_adapt_probs(VP9Context *s); int ff_vp9_decode_block(AVCodecContext *avctx, int row, int col, VP9Filter *lflvl, ptrdiff_t yoff, ptrdiff_t uvoff, enum BlockLevel bl, enum BlockPartition bp); #endif /* AVCODEC_VP9_H */