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121 lines
4.2 KiB
121 lines
4.2 KiB
/*
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* This file is part of the Trezor project, https://trezor.io/
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*
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* Copyright (c) SatoshiLabs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GL_BITBLT_H
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#define GL_BITBLT_H
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#include <stdbool.h>
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#include <stdint.h>
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#include "gl_color.h"
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// These module provides low-level bit block transfer (bitblt)
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// operations on different bitmap/framebuffer types.
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//
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// `fill` - fills a rectangle with a solid color (with an optional
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// alpha, allowing color blending).
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//
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// `copy` - copies a bitmap or part of it to the destination bitmap.
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//
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// `blend` - blends a bitmap with a 1- or 4-bit alpha channel to the
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// destination using background and foreground colors.
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//
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// These operations might be accelerated using DMA2D (ChromART accelerator)
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// on the STM32 platform.
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// Represents a set of parameters for a bit block transfer operation.
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typedef struct {
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// Pointer to the destination bitmap's first row
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void* dst_row;
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// Number of bytes per line in the destination bitmap
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uint16_t dst_stride;
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// X-coordinate of the top-left corner inside the destination
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uint16_t dst_x;
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// Y-coordinate of the top-left corner inside the destination
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uint16_t dst_y;
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// Height of the filled/copied/blended area
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uint16_t height;
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// Width of the filled/copied/blended area
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uint16_t width;
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// Pointer to the source bitmap's first row
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// (unused for fill operations)
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void* src_row;
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// Number of bytes per line in the source bitmap
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// (unused for fill operations)
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uint16_t src_stride;
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// X-coordinate of the origin in the source bitmap
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// (unused for fill operations)
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uint16_t src_x;
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// Y-coordinate of the origin in the source bitmap
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// (unused for fill operations)
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uint16_t src_y;
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// Foreground color used when copying/blending/filling
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gl_color_t src_fg;
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// Background color used when copying mono bitmaps
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gl_color_t src_bg;
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// Alpha value for fill operation (255 => normal fill, 0 => noop)
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uint8_t src_alpha;
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} gl_bitblt_t;
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// Functions for RGB565 bitmap/framebuffer
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// Fills a rectangle with a solid color
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void gl_rgb565_fill(const gl_bitblt_t* bb);
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// Copies a mono bitmap (with 1-bit alpha channel)
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void gl_rgb565_copy_mono1p(const gl_bitblt_t* bb);
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// Copies a mono bitmap (with 4-bit alpha channel)
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void gl_rgb565_copy_mono4(const gl_bitblt_t* bb);
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// Copies an RGB565 bitmap
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void gl_rgb565_copy_rgb565(const gl_bitblt_t* bb);
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// Blends a mono bitmap (with 4-bit alpha channel)
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// with the destination bitmap
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void gl_rgb565_blend_mono4(const gl_bitblt_t* bb);
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// Functions for RGBA8888 bitmap/framebuffer
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void gl_rgba8888_fill(const gl_bitblt_t* bb);
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// Copies a mono bitmap (with 1-bit alpha channel)
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void gl_rgba8888_copy_mono1p(const gl_bitblt_t* bb);
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// Copies a mono bitmap (with 4-bit alpha channel)
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void gl_rgba8888_copy_mono4(const gl_bitblt_t* bb);
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// Copies an RGB565 bitmap
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void gl_rgba8888_copy_rgb565(const gl_bitblt_t* bb);
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// Copies an RGBA8888 bitmap
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void gl_rgba8888_copy_rgba8888(const gl_bitblt_t* bb);
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// Blends a mono bitmap (with 4-bit alpha channel)
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// with the destination bitmap
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void gl_rgba8888_blend_mono4(const gl_bitblt_t* bb);
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// Functions for Mono8 bitmap/framebuffer
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void gl_mono8_fill(const gl_bitblt_t* bb);
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// Copies a mono bitmap (with 1-bit alpha channel)
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void gl_mono8_copy_mono1p(const gl_bitblt_t* bb);
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// Copies a mono bitmap (with 4-bit alpha channel)
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void gl_mono8_copy_mono4(const gl_bitblt_t* bb);
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// Blends a mono bitmap (with 1-bit alpha channel)
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// with the destination bitmap
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void gl_mono8_blend_mono1p(const gl_bitblt_t* bb);
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// Blends a mono bitmap (with 4-bit alpha channel)
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// with the destination bitmap
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void gl_mono8_blend_mono4(const gl_bitblt_t* bb);
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#endif // GL_BITBLT_H
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