yading@10: /* yading@10: * Chinese AVS video (AVS1-P2, JiZhun profile) decoder. yading@10: * Copyright (c) 2006 Stefan Gehrer yading@10: * yading@10: * This file is part of FFmpeg. yading@10: * yading@10: * FFmpeg is free software; you can redistribute it and/or yading@10: * modify it under the terms of the GNU Lesser General Public yading@10: * License as published by the Free Software Foundation; either yading@10: * version 2.1 of the License, or (at your option) any later version. yading@10: * yading@10: * FFmpeg is distributed in the hope that it will be useful, yading@10: * but WITHOUT ANY WARRANTY; without even the implied warranty of yading@10: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU yading@10: * Lesser General Public License for more details. yading@10: * yading@10: * You should have received a copy of the GNU Lesser General Public yading@10: * License along with FFmpeg; if not, write to the Free Software yading@10: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA yading@10: */ yading@10: yading@10: #ifndef AVCODEC_CAVS_H yading@10: #define AVCODEC_CAVS_H yading@10: yading@10: #include "cavsdsp.h" yading@10: #include "dsputil.h" yading@10: #include "h264chroma.h" yading@10: #include "get_bits.h" yading@10: #include "videodsp.h" yading@10: yading@10: #define SLICE_MAX_START_CODE 0x000001af yading@10: #define EXT_START_CODE 0x000001b5 yading@10: #define USER_START_CODE 0x000001b2 yading@10: #define CAVS_START_CODE 0x000001b0 yading@10: #define PIC_I_START_CODE 0x000001b3 yading@10: #define PIC_PB_START_CODE 0x000001b6 yading@10: yading@10: #define A_AVAIL 1 yading@10: #define B_AVAIL 2 yading@10: #define C_AVAIL 4 yading@10: #define D_AVAIL 8 yading@10: #define NOT_AVAIL -1 yading@10: #define REF_INTRA -2 yading@10: #define REF_DIR -3 yading@10: yading@10: #define ESCAPE_CODE 59 yading@10: yading@10: #define FWD0 0x01 yading@10: #define FWD1 0x02 yading@10: #define BWD0 0x04 yading@10: #define BWD1 0x08 yading@10: #define SYM0 0x10 yading@10: #define SYM1 0x20 yading@10: #define SPLITH 0x40 yading@10: #define SPLITV 0x80 yading@10: yading@10: #define MV_BWD_OFFS 12 yading@10: #define MV_STRIDE 4 yading@10: yading@10: enum cavs_mb { yading@10: I_8X8 = 0, yading@10: P_SKIP, yading@10: P_16X16, yading@10: P_16X8, yading@10: P_8X16, yading@10: P_8X8, yading@10: B_SKIP, yading@10: B_DIRECT, yading@10: B_FWD_16X16, yading@10: B_BWD_16X16, yading@10: B_SYM_16X16, yading@10: B_8X8 = 29 yading@10: }; yading@10: yading@10: enum cavs_sub_mb { yading@10: B_SUB_DIRECT, yading@10: B_SUB_FWD, yading@10: B_SUB_BWD, yading@10: B_SUB_SYM yading@10: }; yading@10: yading@10: enum cavs_intra_luma { yading@10: INTRA_L_VERT, yading@10: INTRA_L_HORIZ, yading@10: INTRA_L_LP, yading@10: INTRA_L_DOWN_LEFT, yading@10: INTRA_L_DOWN_RIGHT, yading@10: INTRA_L_LP_LEFT, yading@10: INTRA_L_LP_TOP, yading@10: INTRA_L_DC_128 yading@10: }; yading@10: yading@10: enum cavs_intra_chroma { yading@10: INTRA_C_LP, yading@10: INTRA_C_HORIZ, yading@10: INTRA_C_VERT, yading@10: INTRA_C_PLANE, yading@10: INTRA_C_LP_LEFT, yading@10: INTRA_C_LP_TOP, yading@10: INTRA_C_DC_128, yading@10: }; yading@10: yading@10: enum cavs_mv_pred { yading@10: MV_PRED_MEDIAN, yading@10: MV_PRED_LEFT, yading@10: MV_PRED_TOP, yading@10: MV_PRED_TOPRIGHT, yading@10: MV_PRED_PSKIP, yading@10: MV_PRED_BSKIP yading@10: }; yading@10: yading@10: enum cavs_block { yading@10: BLK_16X16, yading@10: BLK_16X8, yading@10: BLK_8X16, yading@10: BLK_8X8 yading@10: }; yading@10: yading@10: enum cavs_mv_loc { yading@10: MV_FWD_D3 = 0, yading@10: MV_FWD_B2, yading@10: MV_FWD_B3, yading@10: MV_FWD_C2, yading@10: MV_FWD_A1, yading@10: MV_FWD_X0, yading@10: MV_FWD_X1, yading@10: MV_FWD_A3 = 8, yading@10: MV_FWD_X2, yading@10: MV_FWD_X3, yading@10: MV_BWD_D3 = MV_BWD_OFFS, yading@10: MV_BWD_B2, yading@10: MV_BWD_B3, yading@10: MV_BWD_C2, yading@10: MV_BWD_A1, yading@10: MV_BWD_X0, yading@10: MV_BWD_X1, yading@10: MV_BWD_A3 = MV_BWD_OFFS+8, yading@10: MV_BWD_X2, yading@10: MV_BWD_X3 yading@10: }; yading@10: yading@10: DECLARE_ALIGNED(8, typedef, struct) { yading@10: int16_t x; yading@10: int16_t y; yading@10: int16_t dist; yading@10: int16_t ref; yading@10: } cavs_vector; yading@10: yading@10: struct dec_2dvlc { yading@10: int8_t rltab[59][3]; yading@10: int8_t level_add[27]; yading@10: int8_t golomb_order; yading@10: int inc_limit; yading@10: int8_t max_run; yading@10: }; yading@10: yading@10: typedef struct AVSFrame { yading@10: AVFrame *f; yading@10: int poc; yading@10: } AVSFrame; yading@10: yading@10: typedef struct AVSContext { yading@10: AVCodecContext *avctx; yading@10: DSPContext dsp; yading@10: H264ChromaContext h264chroma; yading@10: VideoDSPContext vdsp; yading@10: CAVSDSPContext cdsp; yading@10: GetBitContext gb; yading@10: AVSFrame cur; ///< currently decoded frame yading@10: AVSFrame DPB[2]; ///< reference frames yading@10: int dist[2]; ///< temporal distances from current frame to ref frames yading@10: int low_delay; yading@10: int profile, level; yading@10: int aspect_ratio; yading@10: int mb_width, mb_height; yading@10: int width, height; yading@10: int stream_revision; ///<0 for samples from 2006, 1 for rm52j encoder yading@10: int progressive; yading@10: int pic_structure; yading@10: int skip_mode_flag; ///< select between skip_count or one skip_flag per MB yading@10: int loop_filter_disable; yading@10: int alpha_offset, beta_offset; yading@10: int ref_flag; yading@10: int mbx, mby, mbidx; ///< macroblock coordinates yading@10: int flags; ///< availability flags of neighbouring macroblocks yading@10: int stc; ///< last start code yading@10: uint8_t *cy, *cu, *cv; ///< current MB sample pointers yading@10: int left_qp; yading@10: uint8_t *top_qp; yading@10: yading@10: /** mv motion vector cache yading@10: 0: D3 B2 B3 C2 yading@10: 4: A1 X0 X1 - yading@10: 8: A3 X2 X3 - yading@10: yading@10: X are the vectors in the current macroblock (5,6,9,10) yading@10: A is the macroblock to the left (4,8) yading@10: B is the macroblock to the top (1,2) yading@10: C is the macroblock to the top-right (3) yading@10: D is the macroblock to the top-left (0) yading@10: yading@10: the same is repeated for backward motion vectors */ yading@10: cavs_vector mv[2*4*3]; yading@10: cavs_vector *top_mv[2]; yading@10: cavs_vector *col_mv; yading@10: yading@10: /** luma pred mode cache yading@10: 0: -- B2 B3 yading@10: 3: A1 X0 X1 yading@10: 6: A3 X2 X3 */ yading@10: int pred_mode_Y[3*3]; yading@10: int *top_pred_Y; yading@10: int l_stride, c_stride; yading@10: int luma_scan[4]; yading@10: int qp; yading@10: int qp_fixed; yading@10: int cbp; yading@10: ScanTable scantable; yading@10: yading@10: /** intra prediction is done with un-deblocked samples yading@10: they are saved here before deblocking the MB */ yading@10: uint8_t *top_border_y, *top_border_u, *top_border_v; yading@10: uint8_t left_border_y[26], left_border_u[10], left_border_v[10]; yading@10: uint8_t intern_border_y[26]; yading@10: uint8_t topleft_border_y, topleft_border_u, topleft_border_v; yading@10: yading@10: void (*intra_pred_l[8])(uint8_t *d,uint8_t *top,uint8_t *left,int stride); yading@10: void (*intra_pred_c[7])(uint8_t *d,uint8_t *top,uint8_t *left,int stride); yading@10: uint8_t *col_type_base; yading@10: yading@10: /* scaling factors for MV prediction */ yading@10: int sym_factor; ///< for scaling in symmetrical B block yading@10: int direct_den[2]; ///< for scaling in direct B block yading@10: int scale_den[2]; ///< for scaling neighbouring MVs yading@10: yading@10: uint8_t *edge_emu_buffer; yading@10: yading@10: int got_keyframe; yading@10: int16_t *block; yading@10: } AVSContext; yading@10: yading@10: extern const uint8_t ff_cavs_partition_flags[30]; yading@10: extern const cavs_vector ff_cavs_intra_mv; yading@10: extern const cavs_vector ff_cavs_dir_mv; yading@10: yading@10: static inline void set_mvs(cavs_vector *mv, enum cavs_block size) { yading@10: switch(size) { yading@10: case BLK_16X16: yading@10: mv[MV_STRIDE ] = mv[0]; yading@10: mv[MV_STRIDE+1] = mv[0]; yading@10: case BLK_16X8: yading@10: mv[1] = mv[0]; yading@10: break; yading@10: case BLK_8X16: yading@10: mv[MV_STRIDE] = mv[0]; yading@10: break; yading@10: } yading@10: } yading@10: yading@10: void ff_cavs_filter(AVSContext *h, enum cavs_mb mb_type); yading@10: void ff_cavs_load_intra_pred_luma(AVSContext *h, uint8_t *top, uint8_t **left, yading@10: int block); yading@10: void ff_cavs_load_intra_pred_chroma(AVSContext *h); yading@10: void ff_cavs_modify_mb_i(AVSContext *h, int *pred_mode_uv); yading@10: void ff_cavs_inter(AVSContext *h, enum cavs_mb mb_type); yading@10: void ff_cavs_mv(AVSContext *h, enum cavs_mv_loc nP, enum cavs_mv_loc nC, yading@10: enum cavs_mv_pred mode, enum cavs_block size, int ref); yading@10: void ff_cavs_init_mb(AVSContext *h); yading@10: int ff_cavs_next_mb(AVSContext *h); yading@10: int ff_cavs_init_pic(AVSContext *h); yading@10: void ff_cavs_init_top_lines(AVSContext *h); yading@10: int ff_cavs_init(AVCodecContext *avctx); yading@10: int ff_cavs_end (AVCodecContext *avctx); yading@10: yading@10: #endif /* AVCODEC_CAVS_H */