/* * This file is part of the Trezor project, https://trezor.io/ * * Copyright (c) SatoshiLabs * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include "buffers.h" #include "common.h" #include "fonts/fonts.h" #include "memzero.h" const int32_t text_buffer_height = FONT_MAX_HEIGHT; const int32_t buffer_width = DISPLAY_RESX; #define CONCAT_(a, b) a##b #define CONCAT(a, b) CONCAT_(a, b) #define CONCAT3_(a, b, c) a##b##c #define CONCAT3(a, b, c) CONCAT3_(a, b, c) #define STRUCT(name) CONCAT3(buffers_, name, _t) #define TYPE(name) CONCAT3(buffer_, name, _t) #define FUNCTION(name) CONCAT(buffers_get_, name) #define FUNCTION_FREE(name) CONCAT(buffers_free_, name) #define VARNAME(name) CONCAT(buffers_, name) #define BUFFER(section, name, count) \ typedef struct { \ TYPE(name) buffers[count]; \ uint8_t allocated[count]; \ } STRUCT(name); \ section STRUCT(name) VARNAME(name); \ \ TYPE(name) * FUNCTION(name)(bool clear) { \ int idx = -1; \ for (int i = 0; i < (count); i++) { \ if (VARNAME(name).allocated[i] == 0) { \ idx = i; \ break; \ } \ } \ if (idx < 0) { \ return NULL; \ } \ if (clear) { \ memzero(&VARNAME(name).buffers[idx], \ sizeof(VARNAME(name).buffers[idx])); \ } \ VARNAME(name).allocated[idx] = 1; \ return &VARNAME(name).buffers[idx]; \ } \ void FUNCTION_FREE(name)(TYPE(name) * buffer) { \ if (buffer == NULL) { \ return; \ } \ for (uint16_t i = 0; i < (count); i++) { \ if (buffer == &VARNAME(name).buffers[i]) { \ VARNAME(name).allocated[i] = 0; \ return; \ } \ } \ } BUFFER(BUFFER_SECTION, line_16bpp, 3); BUFFER(BUFFER_SECTION, line_4bpp, 3); BUFFER(BUFFER_SECTION, text, 1); BUFFER(NODMA_BUFFER_SECTION, jpeg, 1); BUFFER(NODMA_BUFFER_SECTION, jpeg_work, 1); BUFFER(NODMA_BUFFER_SECTION, blurring, 1); BUFFER(NODMA_BUFFER_SECTION, blurring_totals, 1);