bitdepth.h (3331B)
1 /* 2 * Copyright © 2018, VideoLAN and dav1d authors 3 * Copyright © 2018, Two Orioles, LLC 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright notice, this 10 * list of conditions and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright notice, 13 * this list of conditions and the following disclaimer in the documentation 14 * and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef DAV1D_COMMON_BITDEPTH_H 29 #define DAV1D_COMMON_BITDEPTH_H 30 31 #include <stdint.h> 32 #include <string.h> 33 34 #include "common/attributes.h" 35 36 #if !defined(BITDEPTH) 37 typedef uint8_t pixel; /* can't be void due to pointer-to-array usage */ 38 typedef void coef; 39 #define HIGHBD_DECL_SUFFIX /* nothing */ 40 #define HIGHBD_CALL_SUFFIX /* nothing */ 41 #define HIGHBD_TAIL_SUFFIX /* nothing */ 42 #elif BITDEPTH == 8 43 typedef uint8_t pixel; 44 typedef int16_t coef; 45 #define PIXEL_TYPE uint8_t 46 #define COEF_TYPE int16_t 47 #define pixel_copy memcpy 48 #define pixel_set memset 49 #define iclip_pixel iclip_u8 50 #define PIX_HEX_FMT "%02x" 51 #define bitfn(x) x##_8bpc 52 #define BF(x, suffix) x##_8bpc_##suffix 53 #define PXSTRIDE(x) (x) 54 #define highbd_only(x) 55 #define HIGHBD_DECL_SUFFIX /* nothing */ 56 #define HIGHBD_CALL_SUFFIX /* nothing */ 57 #define HIGHBD_TAIL_SUFFIX /* nothing */ 58 #define bitdepth_from_max(x) 8 59 #define BITDEPTH_MAX 0xff 60 #elif BITDEPTH == 16 61 typedef uint16_t pixel; 62 typedef int32_t coef; 63 #define PIXEL_TYPE uint16_t 64 #define COEF_TYPE int32_t 65 #define pixel_copy(a, b, c) memcpy(a, b, (c) << 1) 66 static inline void pixel_set(pixel *const dst, const int val, const int num) { 67 for (int n = 0; n < num; n++) 68 dst[n] = val; 69 } 70 #define PIX_HEX_FMT "%03x" 71 #define iclip_pixel(x) iclip(x, 0, bitdepth_max) 72 #define HIGHBD_DECL_SUFFIX , const int bitdepth_max 73 #define HIGHBD_CALL_SUFFIX , f->bitdepth_max 74 #define HIGHBD_TAIL_SUFFIX , bitdepth_max 75 #define bitdepth_from_max(bitdepth_max) (32 - clz(bitdepth_max)) 76 #define BITDEPTH_MAX bitdepth_max 77 #define bitfn(x) x##_16bpc 78 #define BF(x, suffix) x##_16bpc_##suffix 79 static inline ptrdiff_t PXSTRIDE(const ptrdiff_t x) { 80 assert(!(x & 1)); 81 return x >> 1; 82 } 83 #define highbd_only(x) x 84 #else 85 #error invalid value for bitdepth 86 #endif 87 #define bytefn(x) bitfn(x) 88 89 #define bitfn_decls(name, ...) \ 90 name##_8bpc(__VA_ARGS__); \ 91 name##_16bpc(__VA_ARGS__) 92 93 #endif /* DAV1D_COMMON_BITDEPTH_H */