blueswir1 | ffd3925 | 2008-11-05 20:24:35 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Pixel drawing function templates for QEMU SM501 Device |
| 3 | * |
| 4 | * Copyright (c) 2008 Shin-ichiro KAWASAKI |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | #if DEPTH == 8 |
| 26 | #define BPP 1 |
| 27 | #define PIXEL_TYPE uint8_t |
| 28 | #elif DEPTH == 15 || DEPTH == 16 |
| 29 | #define BPP 2 |
| 30 | #define PIXEL_TYPE uint16_t |
| 31 | #elif DEPTH == 32 |
| 32 | #define BPP 4 |
| 33 | #define PIXEL_TYPE uint32_t |
| 34 | #else |
| 35 | #error unsupport depth |
| 36 | #endif |
| 37 | |
| 38 | #ifdef BGR_FORMAT |
| 39 | #define PIXEL_NAME glue(DEPTH, bgr) |
| 40 | #else |
| 41 | #define PIXEL_NAME DEPTH |
| 42 | #endif /* BGR_FORMAT */ |
| 43 | |
| 44 | |
| 45 | static void glue(draw_line8_, PIXEL_NAME)( |
| 46 | uint8_t *d, const uint8_t *s, int width, const uint32_t *pal) |
| 47 | { |
| 48 | uint8_t v, r, g, b; |
| 49 | do { |
| 50 | v = ldub_raw(s); |
| 51 | r = (pal[v] >> 16) & 0xff; |
| 52 | g = (pal[v] >> 8) & 0xff; |
| 53 | b = (pal[v] >> 0) & 0xff; |
| 54 | ((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b); |
| 55 | s ++; |
| 56 | d += BPP; |
| 57 | } while (-- width != 0); |
| 58 | } |
| 59 | |
| 60 | static void glue(draw_line16_, PIXEL_NAME)( |
| 61 | uint8_t *d, const uint8_t *s, int width, const uint32_t *pal) |
| 62 | { |
| 63 | uint16_t rgb565; |
| 64 | uint8_t r, g, b; |
| 65 | |
| 66 | do { |
| 67 | rgb565 = lduw_raw(s); |
| 68 | r = ((rgb565 >> 11) & 0x1f) << 3; |
| 69 | g = ((rgb565 >> 5) & 0x3f) << 2; |
| 70 | b = ((rgb565 >> 0) & 0x1f) << 3; |
| 71 | ((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b); |
| 72 | s += 2; |
| 73 | d += BPP; |
| 74 | } while (-- width != 0); |
| 75 | } |
| 76 | |
| 77 | static void glue(draw_line32_, PIXEL_NAME)( |
| 78 | uint8_t *d, const uint8_t *s, int width, const uint32_t *pal) |
| 79 | { |
| 80 | uint8_t r, g, b; |
| 81 | |
| 82 | do { |
| 83 | ldub_raw(s); |
| 84 | #if defined(TARGET_WORDS_BIGENDIAN) |
| 85 | r = s[1]; |
| 86 | g = s[2]; |
| 87 | b = s[3]; |
| 88 | #else |
| 89 | b = s[0]; |
| 90 | g = s[1]; |
| 91 | r = s[2]; |
| 92 | #endif |
| 93 | ((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b); |
| 94 | s += 4; |
| 95 | d += BPP; |
| 96 | } while (-- width != 0); |
| 97 | } |
| 98 | |
Shin-ichiro KAWASAKI | 0a4e7cd | 2010-01-01 15:59:39 +0900 | [diff] [blame] | 99 | /** |
| 100 | * Draw hardware cursor image on the given line. |
| 101 | */ |
| 102 | static void glue(draw_hwc_line_, PIXEL_NAME)(SM501State * s, int crt, |
| 103 | uint8_t * palette, int c_y, uint8_t *d, int width) |
| 104 | { |
| 105 | int x, i; |
| 106 | uint8_t bitset = 0; |
| 107 | |
| 108 | /* get hardware cursor pattern */ |
| 109 | uint32_t cursor_addr = get_hwc_address(s, crt); |
| 110 | assert(0 <= c_y && c_y < SM501_HWC_HEIGHT); |
| 111 | cursor_addr += 64 * c_y / 4; /* 4 pixels per byte */ |
| 112 | cursor_addr += s->base; |
| 113 | |
| 114 | /* get cursor position */ |
| 115 | x = get_hwc_x(s, crt); |
| 116 | d += x * BPP; |
| 117 | |
| 118 | for (i = 0; i < SM501_HWC_WIDTH && x + i < width; i++) { |
| 119 | uint8_t v; |
| 120 | |
| 121 | /* get pixel value */ |
| 122 | if (i % 4 == 0) { |
Stefan Weil | 54f7b4a | 2011-04-10 18:23:39 +0200 | [diff] [blame] | 123 | bitset = ldub_phys(cursor_addr); |
Shin-ichiro KAWASAKI | 0a4e7cd | 2010-01-01 15:59:39 +0900 | [diff] [blame] | 124 | cursor_addr++; |
| 125 | } |
| 126 | v = bitset & 3; |
| 127 | bitset >>= 2; |
| 128 | |
| 129 | /* write pixel */ |
| 130 | if (v) { |
| 131 | v--; |
| 132 | uint8_t r = palette[v * 3 + 0]; |
| 133 | uint8_t g = palette[v * 3 + 1]; |
| 134 | uint8_t b = palette[v * 3 + 2]; |
| 135 | ((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b); |
| 136 | } |
| 137 | d += BPP; |
| 138 | } |
| 139 | } |
| 140 | |
blueswir1 | ffd3925 | 2008-11-05 20:24:35 +0000 | [diff] [blame] | 141 | #undef DEPTH |
| 142 | #undef BPP |
| 143 | #undef PIXEL_TYPE |
| 144 | #undef PIXEL_NAME |
| 145 | #undef BGR_FORMAT |