Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-6.2-pull-request...
[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 static const struct {
93 uint32_t drm_format;
94 pixman_format_code_t pixman_format;
95 } drm_format_pixman_map[] = {
96 { DRM_FORMAT_RGB888, PIXMAN_LE_r8g8b8 },
97 { DRM_FORMAT_ARGB8888, PIXMAN_LE_a8r8g8b8 },
98 { DRM_FORMAT_XRGB8888, PIXMAN_LE_x8r8g8b8 }
99 };
100
101 pixman_format_code_t qemu_drm_format_to_pixman(uint32_t drm_format)
102 {
103 int i;
104
105 for (i = 0; i < ARRAY_SIZE(drm_format_pixman_map); i++) {
106 if (drm_format == drm_format_pixman_map[i].drm_format) {
107 return drm_format_pixman_map[i].pixman_format;
108 }
109 }
110 return 0;
111 }
112
113 uint32_t qemu_pixman_to_drm_format(pixman_format_code_t pixman_format)
114 {
115 int i;
116
117 for (i = 0; i < ARRAY_SIZE(drm_format_pixman_map); i++) {
118 if (pixman_format == drm_format_pixman_map[i].pixman_format) {
119 return drm_format_pixman_map[i].drm_format;
120 }
121 }
122 return 0;
123 }
124
125 int qemu_pixman_get_type(int rshift, int gshift, int bshift)
126 {
127 int type = PIXMAN_TYPE_OTHER;
128
129 if (rshift > gshift && gshift > bshift) {
130 if (bshift == 0) {
131 type = PIXMAN_TYPE_ARGB;
132 } else {
133 type = PIXMAN_TYPE_RGBA;
134 }
135 } else if (rshift < gshift && gshift < bshift) {
136 if (rshift == 0) {
137 type = PIXMAN_TYPE_ABGR;
138 } else {
139 type = PIXMAN_TYPE_BGRA;
140 }
141 }
142 return type;
143 }
144
145 pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf)
146 {
147 pixman_format_code_t format;
148 int type;
149
150 type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift);
151 format = PIXMAN_FORMAT(pf->bits_per_pixel, type,
152 pf->abits, pf->rbits, pf->gbits, pf->bbits);
153 if (!pixman_format_supported_source(format)) {
154 return 0;
155 }
156 return format;
157 }
158
159 /*
160 * Return true for known-good pixman conversions.
161 *
162 * UIs using pixman for format conversion can hook this into
163 * DisplayChangeListenerOps->dpy_gfx_check_format
164 */
165 bool qemu_pixman_check_format(DisplayChangeListener *dcl,
166 pixman_format_code_t format)
167 {
168 switch (format) {
169 /* 32 bpp */
170 case PIXMAN_x8r8g8b8:
171 case PIXMAN_a8r8g8b8:
172 case PIXMAN_b8g8r8x8:
173 case PIXMAN_b8g8r8a8:
174 /* 24 bpp */
175 case PIXMAN_r8g8b8:
176 case PIXMAN_b8g8r8:
177 /* 16 bpp */
178 case PIXMAN_x1r5g5b5:
179 case PIXMAN_r5g6b5:
180 return true;
181 default:
182 return false;
183 }
184 }
185
186 pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
187 int width)
188 {
189 pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0);
190 assert(image != NULL);
191 return image;
192 }
193
194 /* fill linebuf from framebuffer */
195 void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb,
196 int width, int x, int y)
197 {
198 pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf,
199 x, y, 0, 0, 0, 0, width, 1);
200 }
201
202 /* copy linebuf to framebuffer */
203 void qemu_pixman_linebuf_copy(pixman_image_t *fb, int width, int x, int y,
204 pixman_image_t *linebuf)
205 {
206 pixman_image_composite(PIXMAN_OP_SRC, linebuf, NULL, fb,
207 0, 0, 0, 0, x, y, width, 1);
208 }
209
210 pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
211 pixman_image_t *image)
212 {
213 return pixman_image_create_bits(format,
214 pixman_image_get_width(image),
215 pixman_image_get_height(image),
216 NULL,
217 pixman_image_get_stride(image));
218 }
219
220 void qemu_pixman_image_unref(pixman_image_t *image)
221 {
222 if (image == NULL) {
223 return;
224 }
225 pixman_image_unref(image);
226 }
227
228 pixman_color_t qemu_pixman_color(PixelFormat *pf, uint32_t color)
229 {
230 pixman_color_t c;
231
232 c.red = ((color & pf->rmask) >> pf->rshift) << (16 - pf->rbits);
233 c.green = ((color & pf->gmask) >> pf->gshift) << (16 - pf->gbits);
234 c.blue = ((color & pf->bmask) >> pf->bshift) << (16 - pf->bbits);
235 c.alpha = ((color & pf->amask) >> pf->ashift) << (16 - pf->abits);
236 return c;
237 }
238
239 pixman_image_t *qemu_pixman_glyph_from_vgafont(int height, const uint8_t *font,
240 unsigned int ch)
241 {
242 pixman_image_t *glyph;
243 uint8_t *data;
244 bool bit;
245 int x, y;
246
247 glyph = pixman_image_create_bits(PIXMAN_a8, 8, height,
248 NULL, 0);
249 data = (uint8_t *)pixman_image_get_data(glyph);
250
251 font += height * ch;
252 for (y = 0; y < height; y++, font++) {
253 for (x = 0; x < 8; x++, data++) {
254 bit = (*font) & (1 << (7-x));
255 *data = bit ? 0xff : 0x00;
256 }
257 }
258 return glyph;
259 }
260
261 void qemu_pixman_glyph_render(pixman_image_t *glyph,
262 pixman_image_t *surface,
263 pixman_color_t *fgcol,
264 pixman_color_t *bgcol,
265 int x, int y, int cw, int ch)
266 {
267 pixman_image_t *ifg = pixman_image_create_solid_fill(fgcol);
268 pixman_image_t *ibg = pixman_image_create_solid_fill(bgcol);
269
270 pixman_image_composite(PIXMAN_OP_SRC, ibg, NULL, surface,
271 0, 0, 0, 0,
272 cw * x, ch * y,
273 cw, ch);
274 pixman_image_composite(PIXMAN_OP_OVER, ifg, glyph, surface,
275 0, 0, 0, 0,
276 cw * x, ch * y,
277 cw, ch);
278 pixman_image_unref(ifg);
279 pixman_image_unref(ibg);
280 }