2 * Copyright (C) 2016 Open Broadcast Systems Ltd.
3 * Author 2016 Rostislav Pehlivanov <atomnuker@gmail.com>
5 * This file is part of FFmpeg.
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.
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.
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
22 #ifndef AVCODEC_VC2ENC_DWT_H
23 #define AVCODEC_VC2ENC_DWT_H
28 typedef int32_t dwtcoef;
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) */
42 typedef struct VC2TransformContext {
44 void (*vc2_subband_dwt[VC2_TRANSFORMS_NB])(struct VC2TransformContext *t,
45 dwtcoef *data, ptrdiff_t stride,
46 int width, int height);
47 } VC2TransformContext;
49 int ff_vc2enc_init_transforms(VC2TransformContext *t, int p_width, int p_height);
50 void ff_vc2enc_free_transforms(VC2TransformContext *t);
52 #endif /* AVCODEC_VC2ENC_DWT_H */