155 lines
3.3 KiB
C
155 lines
3.3 KiB
C
/*
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* Chinese AVS video (AVS1-P2, JiZhun profile) decoder.
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* Copyright (c) 2006 Stefan Gehrer <stefan.gehrer@gmx.de>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef CAVS_H
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#define CAVS_H
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#include "dsputil.h"
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#define SLICE_MIN_START_CODE 0x00000101
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#define SLICE_MAX_START_CODE 0x000001af
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#define EXT_START_CODE 0x000001b5
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#define USER_START_CODE 0x000001b2
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#define CAVS_START_CODE 0x000001b0
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#define PIC_I_START_CODE 0x000001b3
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#define PIC_PB_START_CODE 0x000001b6
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#define A_AVAIL 1
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#define B_AVAIL 2
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#define C_AVAIL 4
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#define D_AVAIL 8
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#define NOT_AVAIL -1
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#define REF_INTRA -2
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#define REF_DIR -3
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#define ESCAPE_CODE 59
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#define FWD0 0x01
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#define FWD1 0x02
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#define BWD0 0x04
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#define BWD1 0x08
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#define SYM0 0x10
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#define SYM1 0x20
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#define SPLITH 0x40
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#define SPLITV 0x80
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#define MV_BWD_OFFS 12
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#define MV_STRIDE 4
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enum mb_t {
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I_8X8 = 0,
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P_SKIP,
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P_16X16,
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P_16X8,
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P_8X16,
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P_8X8,
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B_SKIP,
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B_DIRECT,
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B_FWD_16X16,
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B_BWD_16X16,
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B_SYM_16X16,
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B_8X8 = 29
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};
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enum sub_mb_t {
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B_SUB_DIRECT,
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B_SUB_FWD,
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B_SUB_BWD,
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B_SUB_SYM
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};
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enum intra_luma_t {
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INTRA_L_VERT,
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INTRA_L_HORIZ,
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INTRA_L_LP,
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INTRA_L_DOWN_LEFT,
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INTRA_L_DOWN_RIGHT,
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INTRA_L_LP_LEFT,
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INTRA_L_LP_TOP,
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INTRA_L_DC_128
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};
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enum intra_chroma_t {
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INTRA_C_LP,
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INTRA_C_HORIZ,
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INTRA_C_VERT,
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INTRA_C_PLANE,
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INTRA_C_LP_LEFT,
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INTRA_C_LP_TOP,
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INTRA_C_DC_128,
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};
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enum mv_pred_t {
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MV_PRED_MEDIAN,
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MV_PRED_LEFT,
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MV_PRED_TOP,
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MV_PRED_TOPRIGHT,
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MV_PRED_PSKIP,
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MV_PRED_BSKIP
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};
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enum block_t {
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BLK_16X16,
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BLK_16X8,
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BLK_8X16,
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BLK_8X8
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};
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enum mv_loc_t {
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MV_FWD_D3 = 0,
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MV_FWD_B2,
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MV_FWD_B3,
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MV_FWD_C2,
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MV_FWD_A1,
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MV_FWD_X0,
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MV_FWD_X1,
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MV_FWD_A3 = 8,
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MV_FWD_X2,
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MV_FWD_X3,
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MV_BWD_D3 = MV_BWD_OFFS,
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MV_BWD_B2,
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MV_BWD_B3,
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MV_BWD_C2,
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MV_BWD_A1,
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MV_BWD_X0,
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MV_BWD_X1,
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MV_BWD_A3 = MV_BWD_OFFS+8,
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MV_BWD_X2,
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MV_BWD_X3
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};
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DECLARE_ALIGNED_8(typedef, struct) {
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int16_t x;
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int16_t y;
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int16_t dist;
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int16_t ref;
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} vector_t;
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typedef struct residual_vlc_t {
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int8_t rltab[59][3];
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int8_t level_add[27];
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int8_t golomb_order;
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int inc_limit;
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int8_t max_run;
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} residual_vlc_t;
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#endif /* CAVS_H */
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