2 * Copyright (c) 2016 Ronald S. Bultje <rsbultje@gmail.com>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #ifndef AVFILTER_COLORSPACEDSP_H
22 #define AVFILTER_COLORSPACEDSP_H
27 typedef void (*yuv2rgb_fn)(int16_t *rgb[3], ptrdiff_t rgb_stride,
28 uint8_t *yuv[3], const ptrdiff_t yuv_stride[3],
29 int w, int h, const int16_t yuv2rgb_coeffs[3][3][8],
30 const int16_t yuv_offset[8]);
31 typedef void (*rgb2yuv_fn)(uint8_t *yuv[3], const ptrdiff_t yuv_stride[3],
32 int16_t *rgb[3], ptrdiff_t rgb_stride,
33 int w, int h, const int16_t rgb2yuv_coeffs[3][3][8],
34 const int16_t yuv_offset[8]);
35 typedef void (*rgb2yuv_fsb_fn)(uint8_t *yuv[3], const ptrdiff_t yuv_stride[3],
36 int16_t *rgb[3], ptrdiff_t rgb_stride,
37 int w, int h, const int16_t rgb2yuv_coeffs[3][3][8],
38 const int16_t yuv_offset[8],
40 typedef void (*yuv2yuv_fn)(uint8_t *yuv_out[3], const ptrdiff_t yuv_out_stride[3],
41 uint8_t *yuv_in[3], const ptrdiff_t yuv_in_stride[3],
42 int w, int h, const int16_t yuv2yuv_coeffs[3][3][8],
43 const int16_t yuv_offset[2][8]);
52 enum ChromaSubsamplingIndex {
59 typedef struct ColorSpaceDSPContext {
60 /* Convert input YUV pixel buffer from a user into an internal, 15bpp array
61 * of intermediate RGB data. */
62 yuv2rgb_fn yuv2rgb[NB_BPP][NB_SS];
63 /* Convert intermediate RGB data (15bpp, internal format) into YUV data and
64 * store into user-provided output buffer */
65 rgb2yuv_fn rgb2yuv[NB_BPP][NB_SS];
66 /* Same as rgb2yuv(), but use floyd-steinberg dithering */
67 rgb2yuv_fsb_fn rgb2yuv_fsb[NB_BPP][NB_SS];
68 /* Direct yuv-to-yuv conversion (input and output are both user-provided
70 yuv2yuv_fn yuv2yuv[NB_BPP /* in */][NB_BPP /* out */][NB_SS];
72 /* In-place 3x3 matrix multiplication. Input and output are both 15bpp
73 * (our internal data format) */
74 void (*multiply3x3)(int16_t *data[3], ptrdiff_t stride,
75 int w, int h, const int16_t m[3][3][8]);
76 } ColorSpaceDSPContext;
78 void ff_colorspacedsp_init(ColorSpaceDSPContext *dsp);
81 void ff_colorspacedsp_x86_init(ColorSpaceDSPContext *dsp);
83 #endif /* AVFILTER_COLORSPACEDSP_H */