1 /* 2 * Copyright (c) 2016 Ronald S. Bultje <rsbultje@gmail.com> 3 * 4 * This file is part of FFmpeg. 5 * 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. 10 * 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. 15 * 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 19 */ 20 21 #ifndef AVFILTER_COLORSPACEDSP_H 22 #define AVFILTER_COLORSPACEDSP_H 23 24 #include <stddef.h> 25 #include <stdint.h> 26 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], 39 int *rnd[3][2]); 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]); 44 45 enum BitDepthIndex { 46 BPP_8, 47 BPP_10, 48 BPP_12, 49 NB_BPP, 50 }; 51 52 enum ChromaSubsamplingIndex { 53 SS_444, 54 SS_422, 55 SS_420, 56 NB_SS, 57 }; 58 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 69 * buffers) */ 70 yuv2yuv_fn yuv2yuv[NB_BPP /* in */][NB_BPP /* out */][NB_SS]; 71 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; 77 78 void ff_colorspacedsp_init(ColorSpaceDSPContext *dsp); 79 80 /* internal */ 81 void ff_colorspacedsp_x86_init(ColorSpaceDSPContext *dsp); 82 83 #endif /* AVFILTER_COLORSPACEDSP_H */ 84