| 1 | /* Copyright (C) 2010-2020 The RetroArch team |
| 2 | * |
| 3 | * --------------------------------------------------------------------------------------- |
| 4 | * The following license statement only applies to this file (scaler.h). |
| 5 | * --------------------------------------------------------------------------------------- |
| 6 | * |
| 7 | * Permission is hereby granted, free of charge, |
| 8 | * to any person obtaining a copy of this software and associated documentation files (the "Software"), |
| 9 | * to deal in the Software without restriction, including without limitation the rights to |
| 10 | * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, |
| 11 | * and to permit persons to whom the Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, |
| 16 | * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 18 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| 19 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 21 | */ |
| 22 | |
| 23 | #ifndef __LIBRETRO_SDK_SCALER_H__ |
| 24 | #define __LIBRETRO_SDK_SCALER_H__ |
| 25 | |
| 26 | #include <stdint.h> |
| 27 | #include <stddef.h> |
| 28 | #include <boolean.h> |
| 29 | #include <clamping.h> |
| 30 | |
| 31 | #include <retro_common_api.h> |
| 32 | |
| 33 | RETRO_BEGIN_DECLS |
| 34 | |
| 35 | enum scaler_pix_fmt |
| 36 | { |
| 37 | SCALER_FMT_ARGB8888 = 0, |
| 38 | SCALER_FMT_ABGR8888, |
| 39 | SCALER_FMT_0RGB1555, |
| 40 | SCALER_FMT_RGB565, |
| 41 | SCALER_FMT_BGR24, |
| 42 | SCALER_FMT_YUYV, |
| 43 | SCALER_FMT_RGBA4444 |
| 44 | }; |
| 45 | |
| 46 | enum scaler_type |
| 47 | { |
| 48 | SCALER_TYPE_UNKNOWN = 0, |
| 49 | SCALER_TYPE_POINT, |
| 50 | SCALER_TYPE_BILINEAR, |
| 51 | SCALER_TYPE_SINC |
| 52 | }; |
| 53 | |
| 54 | struct scaler_filter |
| 55 | { |
| 56 | int16_t *filter; |
| 57 | int *filter_pos; |
| 58 | int filter_len; |
| 59 | int filter_stride; |
| 60 | }; |
| 61 | |
| 62 | struct scaler_ctx |
| 63 | { |
| 64 | void (*scaler_horiz)(const struct scaler_ctx*, |
| 65 | const void*, int); |
| 66 | void (*scaler_vert)(const struct scaler_ctx*, |
| 67 | void*, int); |
| 68 | void (*scaler_special)(const struct scaler_ctx*, |
| 69 | void*, const void*, int, int, int, int, int, int); |
| 70 | |
| 71 | void (*in_pixconv)(void*, const void*, int, int, int, int); |
| 72 | void (*out_pixconv)(void*, const void*, int, int, int, int); |
| 73 | void (*direct_pixconv)(void*, const void*, int, int, int, int); |
| 74 | struct scaler_filter horiz, vert; /* ptr alignment */ |
| 75 | |
| 76 | struct |
| 77 | { |
| 78 | uint32_t *frame; |
| 79 | int stride; |
| 80 | } input; |
| 81 | |
| 82 | struct |
| 83 | { |
| 84 | uint64_t *frame; |
| 85 | int width; |
| 86 | int height; |
| 87 | int stride; |
| 88 | } scaled; |
| 89 | |
| 90 | struct |
| 91 | { |
| 92 | uint32_t *frame; |
| 93 | int stride; |
| 94 | } output; |
| 95 | |
| 96 | int in_width; |
| 97 | int in_height; |
| 98 | int in_stride; |
| 99 | |
| 100 | int out_width; |
| 101 | int out_height; |
| 102 | int out_stride; |
| 103 | |
| 104 | enum scaler_pix_fmt in_fmt; |
| 105 | enum scaler_pix_fmt out_fmt; |
| 106 | enum scaler_type scaler_type; |
| 107 | |
| 108 | bool unscaled; |
| 109 | }; |
| 110 | |
| 111 | bool scaler_ctx_gen_filter(struct scaler_ctx *ctx); |
| 112 | |
| 113 | void scaler_ctx_gen_reset(struct scaler_ctx *ctx); |
| 114 | |
| 115 | /** |
| 116 | * scaler_ctx_scale: |
| 117 | * @ctx : pointer to scaler context object. |
| 118 | * @output : pointer to output image. |
| 119 | * @input : pointer to input image. |
| 120 | * |
| 121 | * Scales an input image to an output image. |
| 122 | **/ |
| 123 | void scaler_ctx_scale(struct scaler_ctx *ctx, |
| 124 | void *output, const void *input); |
| 125 | |
| 126 | RETRO_END_DECLS |
| 127 | |
| 128 | #endif |