blob: 31593b8c38d5ff935d5a677c5e03cbb7ef7917f2
| 1 | /* |
| 2 | * Copyright (c) 2002 The FFmpeg Project |
| 3 | * |
| 4 | * This file is part of FFmpeg. |
| 5 | * |
| 6 | * FFmpeg is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * FFmpeg is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with FFmpeg; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | */ |
| 20 | |
| 21 | #ifndef AVCODEC_WMV2_H |
| 22 | #define AVCODEC_WMV2_H |
| 23 | |
| 24 | #include "avcodec.h" |
| 25 | #include "intrax8.h" |
| 26 | #include "mpegvideo.h" |
| 27 | #include "wmv2dsp.h" |
| 28 | |
| 29 | #define SKIP_TYPE_NONE 0 |
| 30 | #define SKIP_TYPE_MPEG 1 |
| 31 | #define SKIP_TYPE_ROW 2 |
| 32 | #define SKIP_TYPE_COL 3 |
| 33 | |
| 34 | |
| 35 | typedef struct Wmv2Context { |
| 36 | MpegEncContext s; |
| 37 | IntraX8Context x8; |
| 38 | WMV2DSPContext wdsp; |
| 39 | int j_type_bit; |
| 40 | int j_type; |
| 41 | int abt_flag; |
| 42 | int abt_type; |
| 43 | int abt_type_table[6]; |
| 44 | int per_mb_abt; |
| 45 | int per_block_abt; |
| 46 | int mspel_bit; |
| 47 | int cbp_table_index; |
| 48 | int top_left_mv_flag; |
| 49 | int per_mb_rl_bit; |
| 50 | int skip_type; |
| 51 | int hshift; |
| 52 | |
| 53 | ScanTable abt_scantable[2]; |
| 54 | DECLARE_ALIGNED(16, int16_t, abt_block2)[6][64]; |
| 55 | } Wmv2Context; |
| 56 | |
| 57 | void ff_wmv2_common_init(Wmv2Context *w); |
| 58 | |
| 59 | int ff_wmv2_decode_mb(MpegEncContext *s, int16_t block[6][64]); |
| 60 | int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number); |
| 61 | void ff_wmv2_encode_mb(MpegEncContext * s, int16_t block[6][64], |
| 62 | int motion_x, int motion_y); |
| 63 | int ff_wmv2_decode_picture_header(MpegEncContext * s); |
| 64 | int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s); |
| 65 | void ff_wmv2_add_mb(MpegEncContext *s, int16_t block[6][64], |
| 66 | uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr); |
| 67 | |
| 68 | void ff_mspel_motion(MpegEncContext *s, |
| 69 | uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, |
| 70 | uint8_t **ref_picture, op_pixels_func (*pix_op)[4], |
| 71 | int motion_x, int motion_y, int h); |
| 72 | |
| 73 | |
| 74 | static av_always_inline int wmv2_get_cbp_table_index(MpegEncContext *s, int cbp_index) |
| 75 | { |
| 76 | static const uint8_t map[3][3] = { |
| 77 | { 0, 2, 1 }, |
| 78 | { 1, 0, 2 }, |
| 79 | { 2, 1, 0 }, |
| 80 | }; |
| 81 | |
| 82 | return map[(s->qscale > 10) + (s->qscale > 20)][cbp_index]; |
| 83 | } |
| 84 | |
| 85 | #endif /* AVCODEC_WMV2_H */ |
| 86 |