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/*
* Copyright (c) 2016 Ronald S. Bultje <rsbultje@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 AVFILTER_COLORSPACEDSP_H
#define AVFILTER_COLORSPACEDSP_H
#include <stddef.h>
#include <stdint.h>
typedef void (*yuv2rgb_fn)(int16_t *rgb[3], ptrdiff_t rgb_stride,
uint8_t *yuv[3], const ptrdiff_t yuv_stride[3],
int w, int h, const int16_t yuv2rgb_coeffs[3][3][8],
const int16_t yuv_offset[8]);
typedef void (*rgb2yuv_fn)(uint8_t *yuv[3], const ptrdiff_t yuv_stride[3],
int16_t *rgb[3], ptrdiff_t rgb_stride,
int w, int h, const int16_t rgb2yuv_coeffs[3][3][8],
const int16_t yuv_offset[8]);
typedef void (*rgb2yuv_fsb_fn)(uint8_t *yuv[3], const ptrdiff_t yuv_stride[3],
int16_t *rgb[3], ptrdiff_t rgb_stride,
int w, int h, const int16_t rgb2yuv_coeffs[3][3][8],
const int16_t yuv_offset[8],
int *rnd[3][2]);
typedef void (*yuv2yuv_fn)(uint8_t *yuv_out[3], const ptrdiff_t yuv_out_stride[3],
uint8_t *yuv_in[3], const ptrdiff_t yuv_in_stride[3],
int w, int h, const int16_t yuv2yuv_coeffs[3][3][8],
const int16_t yuv_offset[2][8]);
enum BitDepthIndex {
BPP_8,
BPP_10,
BPP_12,
NB_BPP,
};
enum ChromaSubsamplingIndex {
SS_444,
SS_422,
SS_420,
NB_SS,
};
typedef struct ColorSpaceDSPContext {
/* Convert input YUV pixel buffer from a user into an internal, 15bpp array
* of intermediate RGB data. */
yuv2rgb_fn yuv2rgb[NB_BPP][NB_SS];
/* Convert intermediate RGB data (15bpp, internal format) into YUV data and
* store into user-provided output buffer */
rgb2yuv_fn rgb2yuv[NB_BPP][NB_SS];
/* Same as rgb2yuv(), but use floyd-steinberg dithering */
rgb2yuv_fsb_fn rgb2yuv_fsb[NB_BPP][NB_SS];
/* Direct yuv-to-yuv conversion (input and output are both user-provided
* buffers) */
yuv2yuv_fn yuv2yuv[NB_BPP /* in */][NB_BPP /* out */][NB_SS];
/* In-place 3x3 matrix multiplication. Input and output are both 15bpp
* (our internal data format) */
void (*multiply3x3)(int16_t *data[3], ptrdiff_t stride,
int w, int h, const int16_t m[3][3][8]);
} ColorSpaceDSPContext;
void ff_colorspacedsp_init(ColorSpaceDSPContext *dsp);
/* internal */
void ff_colorspacedsp_x86_init(ColorSpaceDSPContext *dsp);
#endif /* AVFILTER_COLORSPACEDSP_H */
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