1 /** 2 * @file lv_draw_sw_utils.h 3 * 4 */ 5 6 #ifndef LV_DRAW_SW_UTILS_H 7 #define LV_DRAW_SW_UTILS_H 8 9 #ifdef __cplusplus 10 extern "C" { 11 #endif 12 13 /********************* 14 * INCLUDES 15 *********************/ 16 #include "../../lv_conf_internal.h" 17 #if LV_USE_DRAW_SW 18 19 #include "../../misc/lv_area.h" 20 #include "../../misc/lv_color.h" 21 #include "../../display/lv_display.h" 22 23 24 /********************* 25 * DEFINES 26 *********************/ 27 28 /********************** 29 * GLOBAL PROTOTYPES 30 **********************/ 31 32 /** 33 * Converts an I1 buffer to ARGB8888 format. 34 * @param buf_i1 pointer to buffer with I1 formatted render 35 * @param buf_argb8888 pointer to buffer for ARGB8888 render 36 * @param width width in pixels of the area. 37 * must be a multiple of 8. 38 * @param height height in pixels of the area 39 * @param buf_i1_stride stride of i1 buffer in bytes 40 * @param buf_argb8888_stride stride of argb8888 buffer in bytes 41 * @param index0_color color of the 0 bits of i1 buf 42 * @param index1_color color of the 1 bits of i1 buf 43 */ 44 void lv_draw_sw_i1_to_argb8888(const void * buf_i1, void * buf_argb8888, uint32_t width, uint32_t height, 45 uint32_t buf_i1_stride, uint32_t buf_argb8888_stride, uint32_t index0_color, uint32_t index1_color); 46 47 /** 48 * Swap the upper and lower byte of an RGB565 buffer. 49 * Might be required if a 8bit parallel port or an SPI port send the bytes in the wrong order. 50 * The bytes will be swapped in place. 51 * @param buf pointer to buffer 52 * @param buf_size_px number of pixels in the buffer 53 */ 54 void lv_draw_sw_rgb565_swap(void * buf, uint32_t buf_size_px); 55 56 /** 57 * Invert a draw buffer in the I1 color format. 58 * Conventionally, a bit is set to 1 during blending if the luminance is greater than 127. 59 * Depending on the display controller used, you might want to have different behavior. 60 * The inversion will be performed in place. 61 * @param buf pointer to the buffer to be inverted 62 * @param buf_size size of the buffer in bytes 63 */ 64 void lv_draw_sw_i1_invert(void * buf, uint32_t buf_size); 65 66 67 /** 68 * Convert a draw buffer in I1 color format from htiled (row-wise) 69 * to vtiled (column-wise) buffer layout. The conversion assumes that the buffer width 70 * and height is rounded to a multiple of 8. 71 * @param buf pointer to the buffer to be converted 72 * @param buf_size size of the buffer in bytes 73 * @param width width of the buffer 74 * @param height height of the buffer 75 * @param out_buf pointer to the output buffer 76 * @param out_buf_size size of the output buffer in bytes 77 * @param bit_order_lsb bit order of the resulting vtiled buffer 78 */ 79 void lv_draw_sw_i1_convert_to_vtiled(const void * buf, uint32_t buf_size, uint32_t width, uint32_t height, 80 void * out_buf, 81 uint32_t out_buf_size, bool bit_order_lsb); 82 83 /** 84 * Rotate a buffer into another buffer 85 * @param src the source buffer 86 * @param dest the destination buffer 87 * @param src_width source width in pixels 88 * @param src_height source height in pixels 89 * @param src_stride source stride in bytes (number of bytes in a row) 90 * @param dest_stride destination stride in bytes (number of bytes in a row) 91 * @param rotation LV_DISPLAY_ROTATION_0/90/180/270 92 * @param color_format LV_COLOR_FORMAT_RGB565/RGB888/XRGB8888/ARGB8888 93 */ 94 void lv_draw_sw_rotate(const void * src, void * dest, int32_t src_width, int32_t src_height, int32_t src_stride, 95 int32_t dest_stride, lv_display_rotation_t rotation, lv_color_format_t color_format); 96 97 /*********************** 98 * GLOBAL VARIABLES 99 ***********************/ 100 101 /********************** 102 * MACROS 103 **********************/ 104 105 #endif /*LV_USE_DRAW_SW*/ 106 107 #ifdef __cplusplus 108 } /*extern "C"*/ 109 #endif 110 111 #endif /*LV_DRAW_SW_UTILS_H*/ 112
