| 1 | /* Copyright (C) 2010-2020 The RetroArch team |
| 2 | * |
| 3 | * --------------------------------------------------------------------------------------- |
| 4 | * The following license statement only applies to this file (scaler.c). |
| 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 | #include <stdio.h> |
| 24 | #include <stdlib.h> |
| 25 | #include <string.h> |
| 26 | #include <math.h> |
| 27 | |
| 28 | #include <gfx/scaler/scaler.h> |
| 29 | #include <gfx/scaler/scaler_int.h> |
| 30 | #include <gfx/scaler/filter.h> |
| 31 | #include <gfx/scaler/pixconv.h> |
| 32 | |
| 33 | static bool allocate_frames(struct scaler_ctx *ctx) |
| 34 | { |
| 35 | uint64_t *scaled_frame = NULL; |
| 36 | ctx->scaled.stride = ((ctx->out_width + 7) & ~7) * sizeof(uint64_t); |
| 37 | ctx->scaled.width = ctx->out_width; |
| 38 | ctx->scaled.height = ctx->in_height; |
| 39 | scaled_frame = (uint64_t*)calloc(sizeof(uint64_t), |
| 40 | (ctx->scaled.stride * ctx->scaled.height) >> 3); |
| 41 | |
| 42 | if (!scaled_frame) |
| 43 | return false; |
| 44 | |
| 45 | ctx->scaled.frame = scaled_frame; |
| 46 | |
| 47 | if (ctx->in_fmt != SCALER_FMT_ARGB8888) |
| 48 | { |
| 49 | uint32_t *input_frame = NULL; |
| 50 | ctx->input.stride = ((ctx->in_width + 7) & ~7) * sizeof(uint32_t); |
| 51 | input_frame = (uint32_t*)calloc(sizeof(uint32_t), |
| 52 | (ctx->input.stride * ctx->in_height) >> 2); |
| 53 | |
| 54 | if (!input_frame) |
| 55 | return false; |
| 56 | |
| 57 | ctx->input.frame = input_frame; |
| 58 | } |
| 59 | |
| 60 | if (ctx->out_fmt != SCALER_FMT_ARGB8888) |
| 61 | { |
| 62 | uint32_t *output_frame = NULL; |
| 63 | ctx->output.stride = ((ctx->out_width + 7) & ~7) * sizeof(uint32_t); |
| 64 | |
| 65 | output_frame = (uint32_t*)calloc(sizeof(uint32_t), |
| 66 | (ctx->output.stride * ctx->out_height) >> 2); |
| 67 | |
| 68 | if (!output_frame) |
| 69 | return false; |
| 70 | |
| 71 | ctx->output.frame = output_frame; |
| 72 | } |
| 73 | |
| 74 | return true; |
| 75 | } |
| 76 | |
| 77 | bool scaler_ctx_gen_filter(struct scaler_ctx *ctx) |
| 78 | { |
| 79 | scaler_ctx_gen_reset(ctx); |
| 80 | |
| 81 | ctx->scaler_special = NULL; |
| 82 | ctx->unscaled = false; |
| 83 | |
| 84 | if (!allocate_frames(ctx)) |
| 85 | return false; |
| 86 | |
| 87 | if ( ctx->in_width == ctx->out_width |
| 88 | && ctx->in_height == ctx->out_height) |
| 89 | { |
| 90 | ctx->unscaled = true; /* Only pixel format conversion ... */ |
| 91 | |
| 92 | if (ctx->in_fmt == ctx->out_fmt) |
| 93 | ctx->direct_pixconv = conv_copy; |
| 94 | else |
| 95 | { |
| 96 | /* Bind a pixel converter callback function to the |
| 97 | * 'direct_pixconv' function pointer of the scaler context object. */ |
| 98 | switch (ctx->in_fmt) |
| 99 | { |
| 100 | case SCALER_FMT_0RGB1555: |
| 101 | switch (ctx->out_fmt) |
| 102 | { |
| 103 | case SCALER_FMT_ARGB8888: |
| 104 | ctx->direct_pixconv = conv_0rgb1555_argb8888; |
| 105 | break; |
| 106 | case SCALER_FMT_RGB565: |
| 107 | ctx->direct_pixconv = conv_0rgb1555_rgb565; |
| 108 | break; |
| 109 | case SCALER_FMT_BGR24: |
| 110 | ctx->direct_pixconv = conv_0rgb1555_bgr24; |
| 111 | break; |
| 112 | default: |
| 113 | break; |
| 114 | } |
| 115 | break; |
| 116 | case SCALER_FMT_RGB565: |
| 117 | switch (ctx->out_fmt) |
| 118 | { |
| 119 | case SCALER_FMT_ARGB8888: |
| 120 | ctx->direct_pixconv = conv_rgb565_argb8888; |
| 121 | break; |
| 122 | case SCALER_FMT_ABGR8888: |
| 123 | ctx->direct_pixconv = conv_rgb565_abgr8888; |
| 124 | break; |
| 125 | case SCALER_FMT_BGR24: |
| 126 | ctx->direct_pixconv = conv_rgb565_bgr24; |
| 127 | break; |
| 128 | case SCALER_FMT_0RGB1555: |
| 129 | ctx->direct_pixconv = conv_rgb565_0rgb1555; |
| 130 | break; |
| 131 | default: |
| 132 | break; |
| 133 | } |
| 134 | break; |
| 135 | case SCALER_FMT_BGR24: |
| 136 | switch (ctx->out_fmt) |
| 137 | { |
| 138 | case SCALER_FMT_ARGB8888: |
| 139 | ctx->direct_pixconv = conv_bgr24_argb8888; |
| 140 | break; |
| 141 | case SCALER_FMT_RGB565: |
| 142 | ctx->direct_pixconv = conv_bgr24_rgb565; |
| 143 | default: |
| 144 | break; |
| 145 | } |
| 146 | break; |
| 147 | case SCALER_FMT_ARGB8888: |
| 148 | switch (ctx->out_fmt) |
| 149 | { |
| 150 | case SCALER_FMT_0RGB1555: |
| 151 | ctx->direct_pixconv = conv_argb8888_0rgb1555; |
| 152 | break; |
| 153 | case SCALER_FMT_BGR24: |
| 154 | ctx->direct_pixconv = conv_argb8888_bgr24; |
| 155 | break; |
| 156 | case SCALER_FMT_ABGR8888: |
| 157 | ctx->direct_pixconv = conv_argb8888_abgr8888; |
| 158 | break; |
| 159 | case SCALER_FMT_RGBA4444: |
| 160 | ctx->direct_pixconv = conv_argb8888_rgba4444; |
| 161 | break; |
| 162 | default: |
| 163 | break; |
| 164 | } |
| 165 | break; |
| 166 | case SCALER_FMT_YUYV: |
| 167 | switch (ctx->out_fmt) |
| 168 | { |
| 169 | case SCALER_FMT_ARGB8888: |
| 170 | ctx->direct_pixconv = conv_yuyv_argb8888; |
| 171 | break; |
| 172 | default: |
| 173 | break; |
| 174 | } |
| 175 | break; |
| 176 | case SCALER_FMT_RGBA4444: |
| 177 | switch (ctx->out_fmt) |
| 178 | { |
| 179 | case SCALER_FMT_ARGB8888: |
| 180 | ctx->direct_pixconv = conv_rgba4444_argb8888; |
| 181 | break; |
| 182 | case SCALER_FMT_RGB565: |
| 183 | ctx->direct_pixconv = conv_rgba4444_rgb565; |
| 184 | break; |
| 185 | default: |
| 186 | break; |
| 187 | } |
| 188 | break; |
| 189 | case SCALER_FMT_ABGR8888: |
| 190 | switch (ctx->out_fmt) |
| 191 | { |
| 192 | case SCALER_FMT_BGR24: |
| 193 | ctx->direct_pixconv = conv_abgr8888_bgr24; |
| 194 | break; |
| 195 | default: |
| 196 | break; |
| 197 | } |
| 198 | break; |
| 199 | } |
| 200 | |
| 201 | if (!ctx->direct_pixconv) |
| 202 | return false; |
| 203 | } |
| 204 | } |
| 205 | else |
| 206 | { |
| 207 | ctx->scaler_horiz = scaler_argb8888_horiz; |
| 208 | ctx->scaler_vert = scaler_argb8888_vert; |
| 209 | |
| 210 | switch (ctx->in_fmt) |
| 211 | { |
| 212 | case SCALER_FMT_ARGB8888: |
| 213 | /* No need to convert :D */ |
| 214 | break; |
| 215 | |
| 216 | case SCALER_FMT_0RGB1555: |
| 217 | ctx->in_pixconv = conv_0rgb1555_argb8888; |
| 218 | break; |
| 219 | |
| 220 | case SCALER_FMT_RGB565: |
| 221 | ctx->in_pixconv = conv_rgb565_argb8888; |
| 222 | break; |
| 223 | |
| 224 | case SCALER_FMT_BGR24: |
| 225 | ctx->in_pixconv = conv_bgr24_argb8888; |
| 226 | break; |
| 227 | |
| 228 | case SCALER_FMT_RGBA4444: |
| 229 | ctx->in_pixconv = conv_rgba4444_argb8888; |
| 230 | break; |
| 231 | |
| 232 | default: |
| 233 | return false; |
| 234 | } |
| 235 | |
| 236 | switch (ctx->out_fmt) |
| 237 | { |
| 238 | case SCALER_FMT_ARGB8888: |
| 239 | /* No need to convert :D */ |
| 240 | break; |
| 241 | |
| 242 | case SCALER_FMT_RGBA4444: |
| 243 | ctx->out_pixconv = conv_argb8888_rgba4444; |
| 244 | break; |
| 245 | |
| 246 | case SCALER_FMT_0RGB1555: |
| 247 | ctx->out_pixconv = conv_argb8888_0rgb1555; |
| 248 | break; |
| 249 | |
| 250 | case SCALER_FMT_BGR24: |
| 251 | ctx->out_pixconv = conv_argb8888_bgr24; |
| 252 | break; |
| 253 | |
| 254 | case SCALER_FMT_ABGR8888: |
| 255 | ctx->out_pixconv = conv_argb8888_abgr8888; |
| 256 | break; |
| 257 | |
| 258 | default: |
| 259 | return false; |
| 260 | } |
| 261 | |
| 262 | if (!scaler_gen_filter(ctx)) |
| 263 | return false; |
| 264 | } |
| 265 | |
| 266 | return true; |
| 267 | } |
| 268 | |
| 269 | void scaler_ctx_gen_reset(struct scaler_ctx *ctx) |
| 270 | { |
| 271 | if (ctx->horiz.filter) |
| 272 | free(ctx->horiz.filter); |
| 273 | if (ctx->horiz.filter_pos) |
| 274 | free(ctx->horiz.filter_pos); |
| 275 | if (ctx->vert.filter) |
| 276 | free(ctx->vert.filter); |
| 277 | if (ctx->vert.filter_pos) |
| 278 | free(ctx->vert.filter_pos); |
| 279 | if (ctx->scaled.frame) |
| 280 | free(ctx->scaled.frame); |
| 281 | if (ctx->input.frame) |
| 282 | free(ctx->input.frame); |
| 283 | if (ctx->output.frame) |
| 284 | free(ctx->output.frame); |
| 285 | |
| 286 | ctx->horiz.filter = NULL; |
| 287 | ctx->horiz.filter_len = 0; |
| 288 | ctx->horiz.filter_stride = 0; |
| 289 | ctx->horiz.filter_pos = NULL; |
| 290 | |
| 291 | ctx->vert.filter = NULL; |
| 292 | ctx->vert.filter_len = 0; |
| 293 | ctx->vert.filter_stride = 0; |
| 294 | ctx->vert.filter_pos = NULL; |
| 295 | |
| 296 | ctx->scaled.frame = NULL; |
| 297 | ctx->scaled.width = 0; |
| 298 | ctx->scaled.height = 0; |
| 299 | ctx->scaled.stride = 0; |
| 300 | |
| 301 | ctx->input.frame = NULL; |
| 302 | ctx->input.stride = 0; |
| 303 | |
| 304 | ctx->output.frame = NULL; |
| 305 | ctx->output.stride = 0; |
| 306 | } |
| 307 | |
| 308 | /** |
| 309 | * scaler_ctx_scale: |
| 310 | * @ctx : pointer to scaler context object. |
| 311 | * @output : pointer to output image. |
| 312 | * @input : pointer to input image. |
| 313 | * |
| 314 | * Scales an input image to an output image. |
| 315 | **/ |
| 316 | void scaler_ctx_scale(struct scaler_ctx *ctx, |
| 317 | void *output, const void *input) |
| 318 | { |
| 319 | const void *input_frame = input; |
| 320 | void *output_frame = output; |
| 321 | int input_stride = ctx->in_stride; |
| 322 | int output_stride = ctx->out_stride; |
| 323 | |
| 324 | if (ctx->in_fmt != SCALER_FMT_ARGB8888) |
| 325 | { |
| 326 | ctx->in_pixconv(ctx->input.frame, input, |
| 327 | ctx->in_width, ctx->in_height, |
| 328 | ctx->input.stride, ctx->in_stride); |
| 329 | |
| 330 | input_frame = ctx->input.frame; |
| 331 | input_stride = ctx->input.stride; |
| 332 | } |
| 333 | |
| 334 | if (ctx->out_fmt != SCALER_FMT_ARGB8888) |
| 335 | { |
| 336 | output_frame = ctx->output.frame; |
| 337 | output_stride = ctx->output.stride; |
| 338 | } |
| 339 | |
| 340 | /* Take some special, and (hopefully) more optimized path. */ |
| 341 | if (ctx->scaler_special) |
| 342 | ctx->scaler_special(ctx, output_frame, input_frame, |
| 343 | ctx->out_width, ctx->out_height, |
| 344 | ctx->in_width, ctx->in_height, |
| 345 | output_stride, input_stride); |
| 346 | else |
| 347 | { |
| 348 | /* Take generic filter path. */ |
| 349 | if (ctx->scaler_horiz) |
| 350 | ctx->scaler_horiz(ctx, input_frame, input_stride); |
| 351 | if (ctx->scaler_vert) |
| 352 | ctx->scaler_vert (ctx, output, output_stride); |
| 353 | } |
| 354 | |
| 355 | if (ctx->out_fmt != SCALER_FMT_ARGB8888) |
| 356 | ctx->out_pixconv(output, ctx->output.frame, |
| 357 | ctx->out_width, ctx->out_height, |
| 358 | ctx->out_stride, ctx->output.stride); |
| 359 | } |