| /* |
| * Chinese AVS video (AVS1-P2, JiZhun profile) decoder. |
| * Copyright (c) 2006 Stefan Gehrer <stefan.gehrer@gmx.de> |
| * |
| * 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_CAVS_H |
| #define AVCODEC_CAVS_H |
| |
| #include "libavutil/mem_internal.h" |
| |
| #include "cavsdsp.h" |
| #include "blockdsp.h" |
| #include "h264chroma.h" |
| #include "idctdsp.h" |
| #include "get_bits.h" |
| #include "videodsp.h" |
| |
| #define SLICE_MAX_START_CODE 0x000001af |
| #define EXT_START_CODE 0x000001b5 |
| #define USER_START_CODE 0x000001b2 |
| #define CAVS_START_CODE 0x000001b0 |
| #define PIC_I_START_CODE 0x000001b3 |
| #define PIC_PB_START_CODE 0x000001b6 |
| |
| #define A_AVAIL 1 |
| #define B_AVAIL 2 |
| #define C_AVAIL 4 |
| #define D_AVAIL 8 |
| #define NOT_AVAIL -1 |
| #define REF_INTRA -2 |
| #define REF_DIR -3 |
| |
| #define ESCAPE_CODE 59 |
| |
| #define FWD0 0x01 |
| #define FWD1 0x02 |
| #define BWD0 0x04 |
| #define BWD1 0x08 |
| #define SYM0 0x10 |
| #define SYM1 0x20 |
| #define SPLITH 0x40 |
| #define SPLITV 0x80 |
| |
| #define MV_BWD_OFFS 12 |
| #define MV_STRIDE 4 |
| |
| enum cavs_mb { |
| I_8X8 = 0, |
| P_SKIP, |
| P_16X16, |
| P_16X8, |
| P_8X16, |
| P_8X8, |
| B_SKIP, |
| B_DIRECT, |
| B_FWD_16X16, |
| B_BWD_16X16, |
| B_SYM_16X16, |
| B_8X8 = 29 |
| }; |
| |
| enum cavs_sub_mb { |
| B_SUB_DIRECT, |
| B_SUB_FWD, |
| B_SUB_BWD, |
| B_SUB_SYM |
| }; |
| |
| enum cavs_intra_luma { |
| INTRA_L_VERT, |
| INTRA_L_HORIZ, |
| INTRA_L_LP, |
| INTRA_L_DOWN_LEFT, |
| INTRA_L_DOWN_RIGHT, |
| INTRA_L_LP_LEFT, |
| INTRA_L_LP_TOP, |
| INTRA_L_DC_128 |
| }; |
| |
| enum cavs_intra_chroma { |
| INTRA_C_LP, |
| INTRA_C_HORIZ, |
| INTRA_C_VERT, |
| INTRA_C_PLANE, |
| INTRA_C_LP_LEFT, |
| INTRA_C_LP_TOP, |
| INTRA_C_DC_128, |
| }; |
| |
| enum cavs_mv_pred { |
| MV_PRED_MEDIAN, |
| MV_PRED_LEFT, |
| MV_PRED_TOP, |
| MV_PRED_TOPRIGHT, |
| MV_PRED_PSKIP, |
| MV_PRED_BSKIP |
| }; |
| |
| enum cavs_block { |
| BLK_16X16, |
| BLK_16X8, |
| BLK_8X16, |
| BLK_8X8 |
| }; |
| |
| enum cavs_mv_loc { |
| MV_FWD_D3 = 0, |
| MV_FWD_B2, |
| MV_FWD_B3, |
| MV_FWD_C2, |
| MV_FWD_A1, |
| MV_FWD_X0, |
| MV_FWD_X1, |
| MV_FWD_A3 = 8, |
| MV_FWD_X2, |
| MV_FWD_X3, |
| MV_BWD_D3 = MV_BWD_OFFS, |
| MV_BWD_B2, |
| MV_BWD_B3, |
| MV_BWD_C2, |
| MV_BWD_A1, |
| MV_BWD_X0, |
| MV_BWD_X1, |
| MV_BWD_A3 = MV_BWD_OFFS+8, |
| MV_BWD_X2, |
| MV_BWD_X3 |
| }; |
| |
| DECLARE_ALIGNED(8, typedef, struct) { |
| int16_t x; |
| int16_t y; |
| int16_t dist; |
| int16_t ref; |
| } cavs_vector; |
| |
| struct dec_2dvlc { |
| int8_t rltab[59][3]; |
| int8_t level_add[27]; |
| int8_t golomb_order; |
| int inc_limit; |
| int8_t max_run; |
| }; |
| |
| typedef struct AVSFrame { |
| AVFrame *f; |
| int poc; |
| } AVSFrame; |
| |
| typedef struct AVSContext { |
| AVCodecContext *avctx; |
| BlockDSPContext bdsp; |
| H264ChromaContext h264chroma; |
| IDCTDSPContext idsp; |
| VideoDSPContext vdsp; |
| CAVSDSPContext cdsp; |
| GetBitContext gb; |
| AVSFrame cur; ///< currently decoded frame |
| AVSFrame DPB[2]; ///< reference frames |
| int dist[2]; ///< temporal distances from current frame to ref frames |
| int low_delay; |
| int profile, level; |
| int aspect_ratio; |
| int mb_width, mb_height; |
| int width, height; |
| int stream_revision; ///<0 for samples from 2006, 1 for rm52j encoder |
| int progressive; |
| int pic_structure; |
| int skip_mode_flag; ///< select between skip_count or one skip_flag per MB |
| int loop_filter_disable; |
| int alpha_offset, beta_offset; |
| int ref_flag; |
| int mbx, mby, mbidx; ///< macroblock coordinates |
| int flags; ///< availability flags of neighbouring macroblocks |
| int stc; ///< last start code |
| uint8_t *cy, *cu, *cv; ///< current MB sample pointers |
| int left_qp; |
| uint8_t *top_qp; |
| |
| /** mv motion vector cache |
| 0: D3 B2 B3 C2 |
| 4: A1 X0 X1 - |
| 8: A3 X2 X3 - |
| |
| X are the vectors in the current macroblock (5,6,9,10) |
| A is the macroblock to the left (4,8) |
| B is the macroblock to the top (1,2) |
| C is the macroblock to the top-right (3) |
| D is the macroblock to the top-left (0) |
| |
| the same is repeated for backward motion vectors */ |
| cavs_vector mv[2*4*3]; |
| cavs_vector *top_mv[2]; |
| cavs_vector *col_mv; |
| |
| /** luma pred mode cache |
| 0: -- B2 B3 |
| 3: A1 X0 X1 |
| 6: A3 X2 X3 */ |
| int pred_mode_Y[3*3]; |
| int *top_pred_Y; |
| ptrdiff_t l_stride, c_stride; |
| int luma_scan[4]; |
| int qp; |
| int qp_fixed; |
| int pic_qp_fixed; |
| int cbp; |
| ScanTable scantable; |
| |
| /** intra prediction is done with un-deblocked samples |
| they are saved here before deblocking the MB */ |
| uint8_t *top_border_y, *top_border_u, *top_border_v; |
| uint8_t left_border_y[26], left_border_u[10], left_border_v[10]; |
| uint8_t intern_border_y[26]; |
| uint8_t topleft_border_y, topleft_border_u, topleft_border_v; |
| |
| void (*intra_pred_l[8])(uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride); |
| void (*intra_pred_c[7])(uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride); |
| uint8_t *col_type_base; |
| |
| /* scaling factors for MV prediction */ |
| int sym_factor; ///< for scaling in symmetrical B block |
| int direct_den[2]; ///< for scaling in direct B block |
| int scale_den[2]; ///< for scaling neighbouring MVs |
| |
| uint8_t *edge_emu_buffer; |
| |
| int got_keyframe; |
| int16_t *block; |
| } AVSContext; |
| |
| extern const uint8_t ff_cavs_chroma_qp[64]; |
| extern const uint8_t ff_cavs_partition_flags[30]; |
| extern const cavs_vector ff_cavs_intra_mv; |
| extern const cavs_vector ff_cavs_dir_mv; |
| |
| static inline void set_mvs(cavs_vector *mv, enum cavs_block size) { |
| switch(size) { |
| case BLK_16X16: |
| mv[MV_STRIDE ] = mv[0]; |
| mv[MV_STRIDE+1] = mv[0]; |
| case BLK_16X8: |
| mv[1] = mv[0]; |
| break; |
| case BLK_8X16: |
| mv[MV_STRIDE] = mv[0]; |
| break; |
| } |
| } |
| |
| void ff_cavs_filter(AVSContext *h, enum cavs_mb mb_type); |
| void ff_cavs_load_intra_pred_luma(AVSContext *h, uint8_t *top, uint8_t **left, |
| int block); |
| void ff_cavs_load_intra_pred_chroma(AVSContext *h); |
| void ff_cavs_modify_mb_i(AVSContext *h, int *pred_mode_uv); |
| void ff_cavs_inter(AVSContext *h, enum cavs_mb mb_type); |
| void ff_cavs_mv(AVSContext *h, enum cavs_mv_loc nP, enum cavs_mv_loc nC, |
| enum cavs_mv_pred mode, enum cavs_block size, int ref); |
| void ff_cavs_init_mb(AVSContext *h); |
| int ff_cavs_next_mb(AVSContext *h); |
| int ff_cavs_init_pic(AVSContext *h); |
| int ff_cavs_init_top_lines(AVSContext *h); |
| int ff_cavs_init(AVCodecContext *avctx); |
| int ff_cavs_end (AVCodecContext *avctx); |
| |
| #endif /* AVCODEC_CAVS_H */ |
