summaryrefslogtreecommitdiff
path: root/kms++util/src/drawing.cpp
blob: f8cc03fb56413a17469f25134f2503cb10e77a3c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229

#include <kms++/kms++.h>
#include <kms++util/kms++util.h>

using namespace std;

namespace kms
{
void draw_rgb_pixel(IMappedFramebuffer& buf, unsigned x, unsigned y, RGB color)
{
	switch (buf.format()) {
	case PixelFormat::XRGB8888:
	case PixelFormat::ARGB8888:
	{
		uint32_t *p = (uint32_t*)(buf.map(0) + buf.stride(0) * y + x * 4);
		*p = color.argb8888();
		break;
	}
	case PixelFormat::XBGR8888:
	case PixelFormat::ABGR8888:
	{
		uint32_t *p = (uint32_t*)(buf.map(0) + buf.stride(0) * y + x * 4);
		*p = color.abgr8888();
		break;
	}
	case PixelFormat::RGB888:
	{
		uint8_t *p = buf.map(0) + buf.stride(0) * y + x * 3;
		p[0] = color.b;
		p[1] = color.g;
		p[2] = color.r;
		break;
	}
	case PixelFormat::BGR888:
	{
		uint8_t *p = buf.map(0) + buf.stride(0) * y + x * 3;
		p[0] = color.r;
		p[1] = color.g;
		p[2] = color.b;
		break;
	}
	case PixelFormat::RGB565:
	{
		uint16_t *p = (uint16_t*)(buf.map(0) + buf.stride(0) * y + x * 2);
		*p = color.rgb565();
		break;
	}
	case PixelFormat::BGR565:
	{
		uint16_t *p = (uint16_t*)(buf.map(0) + buf.stride(0) * y + x * 2);
		*p = color.bgr565();
		break;
	}
	default:
		throw std::invalid_argument("invalid pixelformat");
	}
}

void draw_yuv422_macropixel(IMappedFramebuffer& buf, unsigned x, unsigned y, YUV yuv1, YUV yuv2)
{
	ASSERT((x & 1) == 0);

	uint8_t *p = (uint8_t*)(buf.map(0) + buf.stride(0) * y + x * 2);

	uint8_t y0 = yuv1.y;
	uint8_t y1 = yuv2.y;
	uint8_t u = (yuv1.u + yuv2.u) / 2;
	uint8_t v = (yuv1.v + yuv2.v) / 2;

	switch (buf.format()) {
	case PixelFormat::UYVY:
		p[0] = u;
		p[1] = y0;
		p[2] = v;
		p[3] = y1;
		break;

	case PixelFormat::YUYV:
		p[0] = y0;
		p[1] = u;
		p[2] = y1;
		p[3] = v;
		break;

	case PixelFormat::YVYU:
		p[0] = y0;
		p[1] = v;
		p[2] = y1;
		p[3] = u;
		break;

	case PixelFormat::VYUY:
		p[0] = v;
		p[1] = y0;
		p[2] = u;
		p[3] = y1;
		break;

	default:
		throw std::invalid_argument("invalid pixelformat");
	}
}

void draw_yuv420_macropixel(IMappedFramebuffer& buf, unsigned x, unsigned y,
			    YUV yuv1, YUV yuv2, YUV yuv3, YUV yuv4)
{
	ASSERT((x & 1) == 0);
	ASSERT((y & 1) == 0);

	uint8_t *py1 = (uint8_t*)(buf.map(0) + buf.stride(0) * (y + 0) + x);
	uint8_t *py2 = (uint8_t*)(buf.map(0) + buf.stride(0) * (y + 1) + x);

	uint8_t *puv = (uint8_t*)(buf.map(1) + buf.stride(1) * (y / 2) + x);

	uint8_t y0 = yuv1.y;
	uint8_t y1 = yuv2.y;
	uint8_t y2 = yuv3.y;
	uint8_t y3 = yuv4.y;
	uint8_t u = (yuv1.u + yuv2.u + yuv3.u + yuv4.u) / 4;
	uint8_t v = (yuv1.v + yuv2.v + yuv3.v + yuv4.v) / 4;

	switch (buf.format()) {
	case PixelFormat::NV12:
		py1[0] = y0;
		py1[1] = y1;
		py2[0] = y2;
		py2[1] = y3;
		puv[0] = u;
		puv[1] = v;
		break;

	case PixelFormat::NV21:
		py1[0] = y0;
		py1[1] = y1;
		py2[0] = y2;
		py2[1] = y3;
		puv[0] = v;
		puv[1] = u;
		break;

	default:
		throw std::invalid_argument("invalid pixelformat");
	}
}

void draw_rect(IMappedFramebuffer &fb, uint32_t x, uint32_t y, uint32_t w, uint32_t h, RGB color)
{
	for (unsigned i = x; i < x + w; ++i) {
		for (unsigned j = y; j < y + h; ++j) {
			draw_rgb_pixel(fb, i, j, color);
		}
	}
}

static bool get_char_pixel(char c, uint32_t x, uint32_t y)
{
#include "font_8x8.h"

	uint8_t bits = fontdata_8x8[8 * c + y];
	bool bit = (bits >> (7 - x)) & 1;

	return bit;
}

static void draw_char(IMappedFramebuffer& buf, uint32_t xpos, uint32_t ypos, char c, RGB color)
{
	unsigned x, y;
	YUV yuvcolor = color.yuv();

	switch (buf.format()) {
	case PixelFormat::XRGB8888:
	case PixelFormat::XBGR8888:
	case PixelFormat::ARGB8888:
	case PixelFormat::ABGR8888:
	case PixelFormat::RGB888:
	case PixelFormat::BGR888:
	case PixelFormat::RGB565:
	case PixelFormat::BGR565:
		for (y = 0; y < 8; y++) {
			for (x = 0; x < 8; x++) {
				bool b = get_char_pixel(c, x, y);

				draw_rgb_pixel(buf, xpos + x, ypos + y, b ? color : RGB());
			}
		}
		break;

	case PixelFormat::UYVY:
	case PixelFormat::YUYV:
	case PixelFormat::YVYU:
	case PixelFormat::VYUY:
		for (y = 0; y < 8; y++) {
			for (x = 0; x < 8; x += 2) {
				bool b0 = get_char_pixel(c, x, y);
				bool b1 = get_char_pixel(c, x + 1, y);

				draw_yuv422_macropixel(buf, xpos + x, ypos + y,
						       b0 ? yuvcolor : YUV(), b1 ? yuvcolor : YUV());
			}
		}
		break;

	case PixelFormat::NV12:
	case PixelFormat::NV21:
		for (y = 0; y < 8; y += 2) {
			for (x = 0; x < 8; x += 2) {
				bool b00 = get_char_pixel(c, x, y);
				bool b10 = get_char_pixel(c, x + 1, y);
				bool b01 = get_char_pixel(c, x, y + 1);
				bool b11 = get_char_pixel(c, x + 1, y + 1);

				draw_yuv420_macropixel(buf, xpos + x, ypos + y,
						       b00 ? yuvcolor : YUV(), b10 ? yuvcolor : YUV(),
						       b01 ? yuvcolor : YUV(), b11 ? yuvcolor : YUV());
			}
		}
		break;
	default:
		throw std::invalid_argument("unknown pixelformat");
	}
}

void draw_text(IMappedFramebuffer& buf, uint32_t x, uint32_t y, const string& str, RGB color)
{
	for(unsigned i = 0; i < str.size(); i++)
		draw_char(buf, (x + 8 * i), y, str[i], color);
}

}