blob: 7fbbfbe0ed9cfc1168b8116e9d130787a86b6230
| 1 | /* |
| 2 | * Copyright (C) 2016 Open Broadcast Systems Ltd. |
| 3 | * Author 2016 Rostislav Pehlivanov <atomnuker@gmail.com> |
| 4 | * |
| 5 | * This file is part of FFmpeg. |
| 6 | * |
| 7 | * FFmpeg is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public |
| 9 | * License as published by the Free Software Foundation; either |
| 10 | * version 2.1 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * FFmpeg is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public |
| 18 | * License along with FFmpeg; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 20 | */ |
| 21 | |
| 22 | #ifndef AVCODEC_VC2ENC_DWT_H |
| 23 | #define AVCODEC_VC2ENC_DWT_H |
| 24 | |
| 25 | #include <stddef.h> |
| 26 | #include <stdint.h> |
| 27 | |
| 28 | typedef int32_t dwtcoef; |
| 29 | |
| 30 | enum VC2TransformType { |
| 31 | VC2_TRANSFORM_9_7 = 0, /* Deslauriers-Dubuc (9,7) */ |
| 32 | VC2_TRANSFORM_5_3 = 1, /* LeGall (5,3) */ |
| 33 | VC2_TRANSFORM_13_7 = 2, /* Deslauriers-Dubuc (13,7) */ |
| 34 | VC2_TRANSFORM_HAAR = 3, /* Haar without shift */ |
| 35 | VC2_TRANSFORM_HAAR_S = 4, /* Haar with 1 shift/lvl */ |
| 36 | VC2_TRANSFORM_FIDEL = 5, /* Fidelity filter */ |
| 37 | VC2_TRANSFORM_9_7_I = 6, /* Daubechies (9,7) */ |
| 38 | |
| 39 | VC2_TRANSFORMS_NB |
| 40 | }; |
| 41 | |
| 42 | typedef struct VC2TransformContext { |
| 43 | dwtcoef *buffer; |
| 44 | void (*vc2_subband_dwt[VC2_TRANSFORMS_NB])(struct VC2TransformContext *t, |
| 45 | dwtcoef *data, ptrdiff_t stride, |
| 46 | int width, int height); |
| 47 | } VC2TransformContext; |
| 48 | |
| 49 | int ff_vc2enc_init_transforms(VC2TransformContext *t, int p_width, int p_height); |
| 50 | void ff_vc2enc_free_transforms(VC2TransformContext *t); |
| 51 | |
| 52 | #endif /* AVCODEC_VC2ENC_DWT_H */ |
| 53 |