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/*
* 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 int16_t dwtcoef;
typedef int32_t qcoef; /* Quantization needs more precision */
/* Only Deslauriers-Dubuc (9,7) and LeGall (5,3) supported! */
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 */
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