| /* |
| * Copyright (C) 2016 Open Broadcast Systems Ltd. |
| * Author 2016 Rostislav Pehlivanov <atomnuker@gmail.com> |
| * |
| * 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_VC2ENC_DWT_H |
| #define AVCODEC_VC2ENC_DWT_H |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| typedef int32_t dwtcoef; |
| |
| enum VC2TransformType { |
| VC2_TRANSFORM_9_7 = 0, /* Deslauriers-Dubuc (9,7) */ |
| VC2_TRANSFORM_5_3 = 1, /* LeGall (5,3) */ |
| VC2_TRANSFORM_13_7 = 2, /* Deslauriers-Dubuc (13,7) */ |
| VC2_TRANSFORM_HAAR = 3, /* Haar without shift */ |
| VC2_TRANSFORM_HAAR_S = 4, /* Haar with 1 shift/lvl */ |
| VC2_TRANSFORM_FIDEL = 5, /* Fidelity filter */ |
| VC2_TRANSFORM_9_7_I = 6, /* Daubechies (9,7) */ |
| |
| VC2_TRANSFORMS_NB |
| }; |
| |
| typedef struct VC2TransformContext { |
| dwtcoef *buffer; |
| int padding; |
| void (*vc2_subband_dwt[VC2_TRANSFORMS_NB])(struct VC2TransformContext *t, |
| dwtcoef *data, ptrdiff_t stride, |
| int width, int height); |
| } VC2TransformContext; |
| |
| int ff_vc2enc_init_transforms(VC2TransformContext *t, int p_stride, int p_height, |
| int slice_w, int slice_h); |
| void ff_vc2enc_free_transforms(VC2TransformContext *t); |
| |
| #endif /* AVCODEC_VC2ENC_DWT_H */ |
