Merge remote-tracking branch 'remotes/dgilbert/tags/pull-migration-20200925a' into...
[qemu.git] / ui / qemu-pixman.c
1 /*
2 * This work is licensed under the terms of the GNU GPL, version 2 or later.
3 * See the COPYING file in the top-level directory.
4 */
5
6 #include "qemu/osdep.h"
7 #include "ui/console.h"
8 #include "standard-headers/drm/drm_fourcc.h"
9
10 PixelFormat qemu_pixelformat_from_pixman(pixman_format_code_t format)
11 {
12 PixelFormat pf;
13 uint8_t bpp;
14
15 bpp = pf.bits_per_pixel = PIXMAN_FORMAT_BPP(format);
16 pf.bytes_per_pixel = PIXMAN_FORMAT_BPP(format) / 8;
17 pf.depth = PIXMAN_FORMAT_DEPTH(format);
18
19 pf.abits = PIXMAN_FORMAT_A(format);
20 pf.rbits = PIXMAN_FORMAT_R(format);
21 pf.gbits = PIXMAN_FORMAT_G(format);
22 pf.bbits = PIXMAN_FORMAT_B(format);
23
24 switch (PIXMAN_FORMAT_TYPE(format)) {
25 case PIXMAN_TYPE_ARGB:
26 pf.ashift = pf.bbits + pf.gbits + pf.rbits;
27 pf.rshift = pf.bbits + pf.gbits;
28 pf.gshift = pf.bbits;
29 pf.bshift = 0;
30 break;
31 case PIXMAN_TYPE_ABGR:
32 pf.ashift = pf.rbits + pf.gbits + pf.bbits;
33 pf.bshift = pf.rbits + pf.gbits;
34 pf.gshift = pf.rbits;
35 pf.rshift = 0;
36 break;
37 case PIXMAN_TYPE_BGRA:
38 pf.bshift = bpp - pf.bbits;
39 pf.gshift = bpp - (pf.bbits + pf.gbits);
40 pf.rshift = bpp - (pf.bbits + pf.gbits + pf.rbits);
41 pf.ashift = 0;
42 break;
43 case PIXMAN_TYPE_RGBA:
44 pf.rshift = bpp - pf.rbits;
45 pf.gshift = bpp - (pf.rbits + pf.gbits);
46 pf.bshift = bpp - (pf.rbits + pf.gbits + pf.bbits);
47 pf.ashift = 0;
48 break;
49 default:
50 g_assert_not_reached();
51 break;
52 }
53
54 pf.amax = (1 << pf.abits) - 1;
55 pf.rmax = (1 << pf.rbits) - 1;
56 pf.gmax = (1 << pf.gbits) - 1;
57 pf.bmax = (1 << pf.bbits) - 1;
58 pf.amask = pf.amax << pf.ashift;
59 pf.rmask = pf.rmax << pf.rshift;
60 pf.gmask = pf.gmax << pf.gshift;
61 pf.bmask = pf.bmax << pf.bshift;
62
63 return pf;
64 }
65
66 pixman_format_code_t qemu_default_pixman_format(int bpp, bool native_endian)
67 {
68 if (native_endian) {
69 switch (bpp) {
70 case 15:
71 return PIXMAN_x1r5g5b5;
72 case 16:
73 return PIXMAN_r5g6b5;
74 case 24:
75 return PIXMAN_r8g8b8;
76 case 32:
77 return PIXMAN_x8r8g8b8;
78 }
79 } else {
80 switch (bpp) {
81 case 24:
82 return PIXMAN_b8g8r8;
83 case 32:
84 return PIXMAN_b8g8r8x8;
85 break;
86 }
87 }
88 return 0;
89 }
90
91 /* Note: drm is little endian, pixman is native endian */
92 pixman_format_code_t qemu_drm_format_to_pixman(uint32_t drm_format)
93 {
94 static const struct {
95 uint32_t drm_format;
96 pixman_format_code_t pixman;
97 } map[] = {
98 { DRM_FORMAT_RGB888, PIXMAN_LE_r8g8b8 },
99 { DRM_FORMAT_ARGB8888, PIXMAN_LE_a8r8g8b8 },
100 { DRM_FORMAT_XRGB8888, PIXMAN_LE_x8r8g8b8 }
101 };
102 int i;
103
104 for (i = 0; i < ARRAY_SIZE(map); i++) {
105 if (drm_format == map[i].drm_format) {
106 return map[i].pixman;
107 }
108 }
109 return 0;
110 }
111
112 int qemu_pixman_get_type(int rshift, int gshift, int bshift)
113 {
114 int type = PIXMAN_TYPE_OTHER;
115
116 if (rshift > gshift && gshift > bshift) {
117 if (bshift == 0) {
118 type = PIXMAN_TYPE_ARGB;
119 } else {
120 type = PIXMAN_TYPE_RGBA;
121 }
122 } else if (rshift < gshift && gshift < bshift) {
123 if (rshift == 0) {
124 type = PIXMAN_TYPE_ABGR;
125 } else {
126 type = PIXMAN_TYPE_BGRA;
127 }
128 }
129 return type;
130 }
131
132 pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf)
133 {
134 pixman_format_code_t format;
135 int type;
136
137 type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift);
138 format = PIXMAN_FORMAT(pf->bits_per_pixel, type,
139 pf->abits, pf->rbits, pf->gbits, pf->bbits);
140 if (!pixman_format_supported_source(format)) {
141 return 0;
142 }
143 return format;
144 }
145
146 /*
147 * Return true for known-good pixman conversions.
148 *
149 * UIs using pixman for format conversion can hook this into
150 * DisplayChangeListenerOps->dpy_gfx_check_format
151 */
152 bool qemu_pixman_check_format(DisplayChangeListener *dcl,
153 pixman_format_code_t format)
154 {
155 switch (format) {
156 /* 32 bpp */
157 case PIXMAN_x8r8g8b8:
158 case PIXMAN_a8r8g8b8:
159 case PIXMAN_b8g8r8x8:
160 case PIXMAN_b8g8r8a8:
161 /* 24 bpp */
162 case PIXMAN_r8g8b8:
163 case PIXMAN_b8g8r8:
164 /* 16 bpp */
165 case PIXMAN_x1r5g5b5:
166 case PIXMAN_r5g6b5:
167 return true;
168 default:
169 return false;
170 }
171 }
172
173 pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
174 int width)
175 {
176 pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0);
177 assert(image != NULL);
178 return image;
179 }
180
181 /* fill linebuf from framebuffer */
182 void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb,
183 int width, int x, int y)
184 {
185 pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf,
186 x, y, 0, 0, 0, 0, width, 1);
187 }
188
189 /* copy linebuf to framebuffer */
190 void qemu_pixman_linebuf_copy(pixman_image_t *fb, int width, int x, int y,
191 pixman_image_t *linebuf)
192 {
193 pixman_image_composite(PIXMAN_OP_SRC, linebuf, NULL, fb,
194 0, 0, 0, 0, x, y, width, 1);
195 }
196
197 pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
198 pixman_image_t *image)
199 {
200 return pixman_image_create_bits(format,
201 pixman_image_get_width(image),
202 pixman_image_get_height(image),
203 NULL,
204 pixman_image_get_stride(image));
205 }
206
207 void qemu_pixman_image_unref(pixman_image_t *image)
208 {
209 if (image == NULL) {
210 return;
211 }
212 pixman_image_unref(image);
213 }
214
215 pixman_color_t qemu_pixman_color(PixelFormat *pf, uint32_t color)
216 {
217 pixman_color_t c;
218
219 c.red = ((color & pf->rmask) >> pf->rshift) << (16 - pf->rbits);
220 c.green = ((color & pf->gmask) >> pf->gshift) << (16 - pf->gbits);
221 c.blue = ((color & pf->bmask) >> pf->bshift) << (16 - pf->bbits);
222 c.alpha = ((color & pf->amask) >> pf->ashift) << (16 - pf->abits);
223 return c;
224 }
225
226 pixman_image_t *qemu_pixman_glyph_from_vgafont(int height, const uint8_t *font,
227 unsigned int ch)
228 {
229 pixman_image_t *glyph;
230 uint8_t *data;
231 bool bit;
232 int x, y;
233
234 glyph = pixman_image_create_bits(PIXMAN_a8, 8, height,
235 NULL, 0);
236 data = (uint8_t *)pixman_image_get_data(glyph);
237
238 font += height * ch;
239 for (y = 0; y < height; y++, font++) {
240 for (x = 0; x < 8; x++, data++) {
241 bit = (*font) & (1 << (7-x));
242 *data = bit ? 0xff : 0x00;
243 }
244 }
245 return glyph;
246 }
247
248 void qemu_pixman_glyph_render(pixman_image_t *glyph,
249 pixman_image_t *surface,
250 pixman_color_t *fgcol,
251 pixman_color_t *bgcol,
252 int x, int y, int cw, int ch)
253 {
254 pixman_image_t *ifg = pixman_image_create_solid_fill(fgcol);
255 pixman_image_t *ibg = pixman_image_create_solid_fill(bgcol);
256
257 pixman_image_composite(PIXMAN_OP_SRC, ibg, NULL, surface,
258 0, 0, 0, 0,
259 cw * x, ch * y,
260 cw, ch);
261 pixman_image_composite(PIXMAN_OP_OVER, ifg, glyph, surface,
262 0, 0, 0, 0,
263 cw * x, ch * y,
264 cw, ch);
265 pixman_image_unref(ifg);
266 pixman_image_unref(ibg);
267 }