diff options
author | Ronald S. Bultje <rsbultje@gmail.com> | 2013-10-01 07:03:30 +0400 |
---|---|---|
committer | Luca Barbato <lu_zero@gentoo.org> | 2013-11-15 13:16:28 +0400 |
commit | 72ca830f511fcdc01253689615faed25da7c57bf (patch) | |
tree | abed6bfb85862fbfa306f686d93c822a82722004 /libavcodec/vp9.h | |
parent | 458446acfa1441d283dacf9e6e545beb083b8bb0 (diff) |
lavc: VP9 decoder
Originally written by Ronald S. Bultje <rsbultje@gmail.com> and
Clément Bœsch <u@pkh.me>
Further contributions by:
Anton Khirnov <anton@khirnov.net>
Diego Biurrun <diego@biurrun.de>
Luca Barbato <lu_zero@gentoo.org>
Martin Storsjö <martin@martin.st>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Diffstat (limited to 'libavcodec/vp9.h')
-rw-r--r-- | libavcodec/vp9.h | 419 |
1 files changed, 419 insertions, 0 deletions
diff --git a/libavcodec/vp9.h b/libavcodec/vp9.h new file mode 100644 index 0000000000..0a6c6eed42 --- /dev/null +++ b/libavcodec/vp9.h @@ -0,0 +1,419 @@ +/* + * VP9 compatible video decoder + * + * Copyright (C) 2013 Ronald S. Bultje <rsbultje gmail com> + * Copyright (C) 2013 Clément Bœsch <u pkh me> + * + * 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 <stddef.h> +#include <stdint.h> + +#include "libavutil/internal.h" + +#include "avcodec.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, const uint8_t *ref, + ptrdiff_t dst_stride, + 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 h264/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; + +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; +} VP9Block; + +typedef struct VP9Context { + VP9DSPContext dsp; + VideoDSPContext vdsp; + GetBitContext gb; + VP56RangeCoder c; + VP56RangeCoder *c_b; + unsigned c_b_size; + VP9Block b; + + // 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 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]; + AVFrame *refs[8]; + AVFrame *cur_frame; + + 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; + 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[8]; + } 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]; + uint8_t *segmentation_map; + VP9MVRefPair *mv[2]; + VP9Filter *lflvl; + DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[71 * 80]; + + // block reconstruction intermediates + DECLARE_ALIGNED(32, int16_t, block)[4096]; + DECLARE_ALIGNED(32, int16_t, uvblock)[2][1024]; + uint8_t eob[256]; + uint8_t uveob[2][64]; + VP56mv 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 */ |